Category: Chains and sprockets

链轮的国家标准（GB1244-85）中尚未规定具体的链轮齿形，仅仅规定了最大和最小齿槽形状及其极限参数。目前较常用的一种齿形是三圆弧一直线齿形（如右图所示）。 右图中，齿廓上的a-a、a-b、c-d线段为三段圆弧，半径依次为r1、r2和r3；b-c线段为直线段。 二、链轮的结构和材料 根据链轮直径的大小，链轮可制成整体式、孔板…

链轮产品标准规格生产是主要类型 在工业的机械产品生产实践中，注重现实的应用为目标进行合理的设计生产，最重要的就是要实现标准规格的生产，链轮厂的合理发展过程中，不断追求更高的产品质量，重要的材料要选择优质产品，然后就是实现标准规格产品的生产。 标准规格的产品，可以在更多的设备上方便安装使用，也可以真正…

The general relationship between the number of teeth of the sprocket and the number of links of the chain The number of teeth and links between the sprocket and the chain, as well as the power of the whole vehicle and the gears of the gears of the gear ratio, are all carefully designed before leaving the factory, according to the optimal and parameter matching, should not be changed again. As for the chain after stretching to can not be adjusted again, must be replaced, because the chain after stretching, the length of each section will become longer, will be greater than the distance between the teeth of the sprocket, if then forcibly take off a section, mounted with the sprocket will not mesh well in the process of rotation...

When designing the chain drive structure, what should be paid attention to when oiling the chain (1) When oiling the chain, the oil should be injected into the gap between the movable joints of the chain and evenly distributed over the width of the chain. (2) The lubricant should be added to the loose side because the chain links are in a loose state and the lubricant can easily enter between the friction surfaces.

Composition of chain transmission 1-active sprocket 2-chain 3-follower sprocket 2, principle of operation Relying on the meshing force between the chain 2 and the two sprockets, the follower sprocket 1 rotates, thus realizing the transfer of motion and/or power. 3, Features: 1) Advantages: ①Average transmission ratio is accurate, no sliding ②Compact structure, small pressure on the shaft Q ③High transmission efficiency η = 98% ④High load capacity P = 100KW ⑤Can transmit long-distance transmission amax = 5-6m, can be used in high temperature, harsh environment ⑥Completed...

The tooth shape of the sprocket should be able to ensure that the chain links enter and exit the meshing smoothly and freely, and it is not easy to disengage the chain, and the shape is simple and easy to process.GB/T1243-97 specifies the end face tooth shape of the roller chain sprocket (Table 9-3) and the shaft face tooth shape (Table 9-4), due to the non-conjugate tooth contour of the roller surface tooth profile and sprocket tooth contour, the design of sprocket tooth shape has a greater flexibility, i.e., it can be used in the maximum and minimum ranges. That is to say, it can be used in both the maximum and minimum ranges. If the sprocket wheel adopts the standard tooth profile, the end face teeth may not be drawn on the sprocket wheel working drawing...

When designing the chain drive structure, what should be paid attention to when oiling the chain (1) When oiling the chain, the oil should be injected into the gap between the movable joints of the chain and evenly distributed over the width of the chain. (2) The lubricant should be added to the loose side because the chain links are in a loose state and the lubricant can easily enter between the friction surfaces. There are many types of chain transmission, and according to the usage, chain can be divided into three categories: lifting chain, pulling chain and transmission chain. ①Lifting chain (also called traction chain)...

The structure of chain sprocket is roughly as follows: 1. Integral structure. Generally used in the processing of single and double rows, single and double flange sprockets with standard chain P=38.1 or below. 2. Welded structure. It is mainly used in the processing of single and double flange sprockets of medium and large specifications. When processing, the flange part is turned into a convex shape by bar material. Tooth ring part can be used plate cutting and processing of the outer diameter and shaft hole, hole one end of the car out of the welding bevel set into the flange part of the welding. Welding should be welded at both ends, the use of low hydrogen welding rod such as T506 welding rod...

Gear failure form: 1, tooth wear: for open gear transmission or closed gear transmission containing unclean lubricant, due to the relative sliding between the meshing teeth, so that some of the harder abrasive particles into the friction surface, so that the tooth profile change, the side gap increases, so that the gear over-thinning lead to tooth breakage. In general, only in the lubricating oil inclusions when the abrasive particles, only in the operation of the tooth surface caused by abrasive wear. 2, tooth surface gluing: for high-speed heavy load gear transmission...

1. Geometry of sprocket wheel tooth shape: The common geometrical shapes of sprocket wheels are three arcs all along the line, two arcs all along the line, two arcs convex tooth shape, one arc all along the line, the center of the tooth groove has an offset straight line and straight line tooth shape. 2. Design principles: the design of sprocket wheel tooth shape should mainly meet the requirements of three aspects: i.e. meshing requirements, use requirements, processability and precision requirements. (1) Ensure that the chain can be smoothly meshed in and out without interference. (2) Have enough to accommodate the chain pitch...

链轮的齿形 链轮的齿形应能保证链节平稳而自由地进入和退出啮合，不易脱链，且形状简单便于加工。GB/T1243-97规定了滚子链链轮的端面齿形（表9-3）和轴面齿形（表9-4），由于滚子表面齿廓与链轮齿廓为非共轭齿廓，故链轮齿形设计有较大的灵活性，即在最大、最小范围内均可使用。 若链轮采用标准齿形，在链轮工作图上可不绘…

目前，我国煤矿广泛使用的装罐推车机主要是电动圆环链推车机。这种推车机以高强度圆环链为牵引机构，结构简单，工作可靠，耐磨损，寿命长田。目前使用的推车机最大行程只能到达罐笼的边缘线，不能满足所有工况的要求[3]。 在使用矿车的运输作业中，为了矿车的装载、提升和卸载等工序，常常要在较短距离内使用推车机来移动…

第一， 链条节距过大或链轮齿数太小。节距过大， 滚子与齿轮匹配不好，容易造成滚子破裂；齿数太小，不能完全卡住滚子也容易造成滚子出现裂纹。维修措施：根据实际情况，选用小节距的链条或增加链轮的齿数。 第二，链轮齿沟有杂物，滚子被杂物挤压导致破裂。维修措施：清除齿沟的杂物，或者换新的链条。 第三，链条在链轮…