China rack and pinion elevator for construction/Steel Gear Rack And Pinion gear and rack

Shape: Rack Gear
Model Number: DJ20140326017
Material: Steel
Processing: Hobbing
Standard or Nonstandard: Standard
DIMENSION: 3.2*1.5*2.5M
Rated Loading Capacity(kg):: 2*2000KG
Hoisting Speed: 0-96M/MIN
Packaging Details: wooden case ,box, plastic bag
Port: XIHU (WEST LAKE) DIS.G

rack and pinion elevator for construction/ Steel Gear Rack And Pinion

i. Brief Introduction of DJ Series Construction Hoists / Elevators

The DJ series of construction elevators are widely used at the sites of industrial and civil construction, bridge construction, underground construction, large chimney construction, ship industry and so on.

1.The DJ series construction lifts has rack and pinion, by which passengers and materials are lifted;

2.This product is dismantled easily and works safely;

3. Overload protection limiter and mechanical chain device are reliable and complete, the safety device restricts the excessive downward movement of the cage and prevents cage falling accidents.

4.The transmission system adopted two/three drive motors and two/three sets of reduction gears;

5. It has simple electrical control system, convenient to be maintained and low failure rate;

6. Galvanized mast sections are available for customers.

7. Transducer is available for all kinds of DJ series construction hoists, including the speed of 0-34m/min, 0-63m/min, 0-96m/min. Transducer makes the construction elevator safer, steadier and more comfortable, and the start electricity is smaller than the working electricity;

8. Floor calling system is available for customers with extra payment;

Features of DJ building hoist:

Product Parameters of DJ20 Series
Payload capacity kg 2000/2000
Erection load capacity kg 1000/1000
Lifting device capacity kg 300
Maximum lifting height m 450
Speed m/min 0~34/63/96
Motor power kw 2*2*11/2*3*11/2*3*18.5/2*3*22
Transducer power kw 2*30/55/75
Cage dimension (length*width*height) m 3.2*1.5*2.5
Mast section type (length*width*height) mm 650*650*1508
Enclosure weight kg 1480
Cage weight kg 1500
Mast section weight kg 150 (δ=4.5mm)
170 (δ=6.3mm)
190 (δ=8.0mm)

1) Suitable for various automotive, electronic, telecommunications, mechanical products, medical devices, etc
2) Adopts advanced CNC machines, highly efficient Rigang injection molding machines, German injection molding machines, Japanese and South Korean high-precision CNC lathes, automatic lathes, automatic milling machines, centreless grinders, instrument lathes and accessories like drills, mill devices, Mitutoyo concentric circles, optical projectors, Mitutoyo fineness instruments for inspection, EDM, high speed CNC machine, Sodick wire EDM, etc.
3)Quality control equipments: roundness meter, projector meter, microscope, gear-test meter, surface measuring meter and so on
4) Precision/tolerance:0.01mm5)Surface processing technic : heat treatment, induction hardening, carbonadoing, others optional can be as requirements
6)Material: iron/aluminum, copper, alloy, carbon steel, 18CrMnTi,20CrMnTi,20Cr,20CrV,1045 steel, others optional
7) Products range: standard component or non-standard component.

8)pressure angle: 20°

9)We are specialized in producing gear rack,gear.Please look at our products;

Dajin Product characteristic

1.Rigid quality control of entire production process from incoming goods to finishing product.

2.CZPT to provide the prompt delivery , high precision mechanical parts and lower price.

3.A wide range of precision in house machining capablities.

4.Industrial roller chain of sprocket style are simplex, duplex , triplex and quadruple..so on

5.A technical expertise is to meet the customer requirement for drawings ,custom design and solution.

6.Surface treatment such as zinc plating ,black oxide.. etc

7.Heat Treatment : Workpiece is heated by induction hardening and then quenching.

8.Main export market s are US, europe , south east asia, middle east and north of america.

9.Material can requested by customer such as 1045 , Stainless steel & cast iron ..etc

10.OEM are welcome

Company Information
Dajin Corporation goal is provide quality, delivery and service on time in responsiveness to customer demand and prospect.

We sincerely welcome both home and abroad to inquire our product.

Helical, Straight-Cut, and Spiral-Bevel Gears

If you are planning to use bevel gears in your machine, you need to understand the differences between Helical, Straight-cut, and Spiral bevel gears. This article will introduce you to these gears, as well as their applications. The article will also discuss the benefits and disadvantages of each type of bevel gear. Once you know the differences, you can choose the right gear for your machine. It is easy to learn about spiral bevel gears.
gear

Spiral bevel gear

Spiral bevel gears play a critical role in the aeronautical transmission system. Their failure can cause devastating accidents. Therefore, accurate detection and fault analysis are necessary for maximizing gear system efficiency. This article will discuss the role of computer aided tooth contact analysis in fault detection and meshing pinion position errors. You can use this method to detect problems in spiral bevel gears. Further, you will learn about its application in other transmission systems.
Spiral bevel gears are designed to mesh the gear teeth more slowly and appropriately. Compared to straight bevel gears, spiral bevel gears are less expensive to manufacture with CNC machining. Spiral bevel gears have a wide range of applications and can even be used to reduce the size of drive shafts and bearings. There are many advantages to spiral bevel gears, but most of them are low-cost.
This type of bevel gear has three basic elements: the pinion-gear pair, the load machine, and the output shaft. Each of these is in torsion. Torsional stiffness accounts for the elasticity of the system. Spiral bevel gears are ideal for applications requiring tight backlash monitoring and high-speed operations. CZPT precision machining and adjustable locknuts reduce backlash and allow for precise adjustments. This reduces maintenance and maximizes drive lifespan.
Spiral bevel gears are useful for both high-speed and low-speed applications. High-speed applications require spiral bevel gears for maximum efficiency and speed. They are also ideal for high-speed and high torque, as they can reduce rpm without affecting the vehicle’s speed. They are also great for transferring power between two shafts. Spiral bevel gears are widely used in automotive gears, construction equipment, and a variety of industrial applications.

Hypoid bevel gear

The Hypoid bevel gear is similar to the spiral bevel gear but differs in the shape of the teeth and pinion. The smallest ratio would result in the lowest gear reduction. A Hypoid bevel gear is very durable and efficient. It can be used in confined spaces and weighs less than an equivalent cylindrical gear. It is also a popular choice for high-torque applications. The Hypoid bevel gear is a good choice for applications requiring a high level of speed and torque.
The Hypoid bevel gear has multiple teeth that mesh with each other at the same time. Because of this, the gear transmits torque with very little noise. This allows it to transfer a higher torque with less noise. However, it must be noted that a Hypoid bevel gear is usually more expensive than a spiral bevel gear. The cost of a Hypoid bevel gear is higher, but its benefits make it a popular choice for some applications.
A Hypoid bevel gear can be made of several types. They may differ in the number of teeth and their spiral angles. In general, the smaller hypoid gear has a larger pinion than its counterpart. This means that the hypoid gear is more efficient and stronger than its bevel cousin. It can even be nearly silent if it is well lubricated. Once you’ve made the decision to get a Hypoid bevel gear, be sure to read up on its benefits.
Another common application for a Hypoid bevel gear is in automobiles. These gears are commonly used in the differential in automobiles and trucks. The torque transfer characteristics of the Hypoid gear system make it an excellent choice for many applications. In addition to maximizing efficiency, Hypoid gears also provide smoothness and efficiency. While some people may argue that a spiral bevel gear set is better, this is not an ideal solution for most automobile assemblies.
gear

Helical bevel gear

Compared to helical worm gears, helical bevel gears have a small, compact housing and are structurally optimized. They can be mounted in various ways and feature double chamber shaft seals. In addition, the diameter of the shaft and flange of a helical bevel gear is comparable to that of a worm gear. The gear box of a helical bevel gear unit can be as small as 1.6 inches, or as large as eight cubic feet.
The main characteristic of helical bevel gears is that the teeth on the driver gear are twisted to the left and the helical arc gears have a similar design. In addition to the backlash, the teeth of bevel gears are twisted in a clockwise and counterclockwise direction, depending on the number of helical bevels in the bevel. It is important to note that the tooth contact of a helical bevel gear will be reduced by about ten to twenty percent if there is no offset between the two gears.
In order to create a helical bevel gear, you need to first define the gear and shaft geometry. Once the geometry has been defined, you can proceed to add bosses and perforations. Then, specify the X-Y plane for both the gear and the shaft. Then, the cross section of the gear will be the basis for the solid created after revolution around the X-axis. This way, you can make sure that your gear will be compatible with the pinion.
The development of CNC machines and additive manufacturing processes has greatly simplified the manufacturing process for helical bevel gears. Today, it is possible to design an unlimited number of bevel gear geometry using high-tech machinery. By utilizing the kinematics of a CNC machine center, you can create an unlimited number of gears with the perfect geometry. In the process, you can make both helical bevel gears and spiral bevel gears.

Straight-cut bevel gear

A straight-cut bevel gear is the easiest to manufacture. The first method of manufacturing a straight bevel gear was to use a planer with an indexing head. Later, more efficient methods of manufacturing straight bevel gears were introduced, such as the Revacycle system and the Coniflex system. The latter method is used by CZPT. Here are some of the main benefits of using a straight-cut bevel gear.
A straight-cut bevel gear is defined by its teeth that intersect at the axis of the gear when extended. Straight-cut bevel gears are usually tapered in thickness, with the outer part being larger than the inner portion. Straight-cut bevel gears exhibit instantaneous lines of contact, and are best suited for low-speed, static-load applications. A common application for straight-cut bevel gears is in the differential systems of automobiles.
After being machined, straight-cut bevel gears undergo heat treatment. Case carburizing produces gears with surfaces of 60-63 Rc. Using this method, the pinion is 3 Rc harder than the gear to equalize wear. Flare hardening, flame hardening, and induction hardening methods are rarely used. Finish machining includes turning the outer and inner diameters and special machining processes.
The teeth of a straight-cut bevel gear experience impact and shock loading. Because the teeth of both gears come into contact abruptly, this leads to excessive noise and vibration. The latter limits the speed and power transmission capacity of the gear. On the other hand, a spiral-cut bevel gear experiences gradual but less-destructive loading. It can be used for high-speed applications, but it should be noted that a spiral-cut bevel gear is more complicated to manufacture.
gear

Spur-cut bevel gear

CZPT stocks bevel gears in spiral and straight tooth configurations, in a range of ratios from 1.5 to five. They are also highly remachinable except for the teeth. Spiral bevel gears have a low helix angle and excellent precision properties. CZPT stock bevel gears are manufactured using state-of-the-art technologies and know-how. Compared with spur-cut gears, these have a longer life span.
To determine the strength and durability of a spur-cut bevel gear, you can calculate its MA (mechanical advantage), surface durability (SD), and tooth number (Nb). These values will vary depending on the design and application environment. You can consult the corresponding guides, white papers, and technical specifications to find the best gear for your needs. In addition, CZPT offers a Supplier Discovery Platform that allows you to discover more than 500,000 suppliers.
Another type of spur gear is the double helical gear. It has both left-hand and right-hand helical teeth. This design balances thrust forces and provides extra gear shear area. Helical gears, on the other hand, feature spiral-cut teeth. While both types of gears may generate significant noise and vibration, helical gears are more efficient for high-speed applications. Spur-cut bevel gears may also cause similar effects.
In addition to diametral pitch, the addendum and dedendum have other important properties. The dedendum is the depth of the teeth below the pitch circle. This diameter is the key to determining the center distance between two spur gears. The radius of each pitch circle is equal to the entire depth of the spur gear. Spur gears often use the addendum and dedendum angles to describe the teeth.

China rack and pinion elevator for construction/Steel Gear Rack And Pinion     gear and rackChina rack and pinion elevator for construction/Steel Gear Rack And Pinion     gear and rack
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