Shell for speed reducer

Abstract

The utility model relates to a shell for a speed reducer, and belongs to the technical field of speed reducers, the shell comprises two matched shell bodies, a worm shaft and a worm wheel shaft, the joint of the two shell bodies is provided with a set of clamping grooves, the clamping groove in one shell body is internally provided with a limiting strip, one side of the limiting strip is provided with a clamping hoop corresponding to the clamping groove, and the other side of the limiting strip is provided with a worm wheel. After the worm shaft is clamped into the clamping groove, the hoop is fixed to the shell to fix the worm shaft. The worm shaft is clamped into the clamping groove, the position of the worm shaft is limited under the action of the limiting strip, action shaking is avoided, tooth spaces of the worm shaft and the worm wheel shaft are shifted, the worm shaft is fixed in advance conveniently by clamping the hoop, meanwhile, the position of the worm shaft is further limited, and the worm shaft can be fixed conveniently. The worm-wheel shaft is extruded by the abutting block of the abutting mechanism, so that gears on the worm-wheel shaft and the worm shaft are still engaged and clamped after long-time friction, and the service life of the speed reducer is prolonged.

Description

Technical Field

[0001] The present application relates to the technical field of reducers, and in particular to a housing for a reducer. Background Art

[0002] At present, the reducer is an independent component composed of gear transmission, worm transmission and worm transmission enclosed in a rigid shell. It is often used as a reduction transmission device between the prime mover and the working machine. It plays the role of matching speed and transmitting torque between the prime mover and the working machine or actuator. It is widely used in modern machinery.

[0003] When a reducer is in operation, friction occurs between the worm gear and the worm gear as they mesh and rotate. Over time, wear and tear between the worm gear and the worm gear meshing together, and the gap between the gears increases. This can cause angular hysteresis errors in the worm gear output. In some applications where high precision is required, wear and tear between the gears and the worm gear meshing together can result in insufficient precision, forcing the entire reducer to failure, resulting in significant waste. Furthermore, the reducer housing is complex to install, and after extended use, the spacing between the mounting holes can widen, causing the worm gear and worm gear to loosen, impacting operating performance.

[0004] Regarding the above-mentioned related technologies, the inventors believe that the following defects exist: after long-term use, the gap between the teeth of the turbine and worm of the reducer and the installation point with the housing will increase, affecting the installation effect. Secondly, the connection of the housing is relatively cumbersome. Utility Model Content

[0005] The purpose of this application is to provide a housing for a reducer to solve the problems raised in the above background technology.

[0006] To achieve the above objectives, the present application provides a reducer housing adopting the following technical solution:

[0007] A housing for a reducer, comprising two mating housings, a worm shaft and a worm wheel shaft, wherein a set of slots are provided at the connection of the two housings, a limit strip is provided in the slot on one housing, a clamp corresponding to the slot is provided on one side of the limit strip, the worm shaft is inserted into the slot, a block corresponding to the limit strip is provided on the worm shaft, the block can slide left and right within the limit strip a corresponding distance, fixed sealing plates are sleeved on both ends of the worm shaft, and the sealing plates connect the two housings by bolts;

[0008] The bottom of the worm shaft is fitted with a worm gear shaft, and a tightening mechanism is provided at the bottom of both ends of the worm gear shaft. The tightening mechanism includes a tightening block, a telescopic rod, a spring and a fixed block. The bottom of the worm gear shaft is fitted with a tightening block, and the bottom of the tightening block is fixedly connected to the telescopic rod. A spring is sleeved on the thin end of the telescopic rod, and the end of the telescopic rod away from the tightening block is fixedly connected to the fixed block.

[0009] By adopting the above technical solution, the worm shaft is clamped into the slot, and the position of the worm shaft is limited by the action of the limit bar to avoid shaking, so that the teeth of the worm shaft and the worm wheel shaft are offset. The clamp is clamped on to facilitate pre-fixation of the worm shaft, and at the same time further limit the position of the worm shaft to prevent the worm shaft from shaking due to loosening of the screws on the housing. The clamping block of the clamping mechanism squeezes the worm wheel shaft, so that the gears on the worm wheel shaft and the worm shaft are still engaged and clamped after long-term friction, thereby improving the service life of the reducer.

[0010] Preferably, two limiting bars are provided in the same card slot and are arranged on both sides of the card slot.

[0011] By adopting the above technical solution, it is convenient to limit the block stuck in the slot, thereby limiting the distance that the worm shaft can swing left and right, making the device more stable.

[0012] Preferably, the fixing block is fixedly arranged in the housing.

[0013] Preferably, the pressing block is configured to be in a semicircular arc shape.

[0014] By adopting the above technical solution, it is convenient to clamp on the shaft of the worm gear shaft, and then squeeze the worm gear shaft so that it is always engaged with the worm shaft.

[0015] Preferably, one end of the worm gear shaft is rotatably arranged on the housing, and the other end passes through the housing.

[0016] Preferably, a limit block is sleeved on the worm gear shaft, and a blocking bar is provided at a position of the housing corresponding to the worm gear shaft.

[0017] By adopting the above technical solution, the limit block limits the limit block on the worm gear shaft, thereby preventing the worm gear shaft from excessively displacing on the housing and affecting the use of the reducer.

[0018] In summary, this application includes at least one of the following beneficial technical effects:

[0019] 1. The worm shaft is inserted into the slot by means of the limit bar, the clamp and the clamping block. The position of the worm shaft is limited by the limit bar to prevent shaking, which causes the teeth of the worm shaft and the worm wheel shaft to shift. The clamp is fastened to facilitate the pre-fixation of the worm shaft and further limit the position of the worm shaft, preventing the worm shaft from shaking due to loose screws on the housing. At the same time, it can reduce the number of screws tightened when connecting the housing, making it easier to disassemble and assemble.

[0020] 2. Through the setting of the tightening mechanism, the tightening block squeezes the worm shaft, so that the meshing teeth of the worm shaft fit into the meshing teeth of the worm shaft, so that the gears on the worm shaft and the worm shaft are still meshed and clamped after a long period of friction, thereby improving the service life of the reducer. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 The embodiment of the present application is used to reflect the overall structural diagram.

[0022] Figure 2 It is a schematic diagram of the overall internal structure used to reflect the embodiment of the present application.

[0023] Figure 3 It is an exploded schematic diagram used to illustrate the whole in the embodiment of the present application.

[0024] Explanation of the accompanying reference numerals: 1. Housing; 2. Worm shaft; 21. Clamping block; 3. Worm gear shaft; 31. Limiting block; 32. Blocking bar; 4. Slot; 5. Limiting bar; 6. Clamp; 7. Fixed sealing plate; 8. Clamping mechanism; 81. Clamping block; 82. Telescopic rod; 83. Spring; 84. Fixed block. DETAILED DESCRIPTION

[0025] The following is combined with Figure 1-3 This application is described in further detail.

[0026] The embodiment of the present application discloses a housing for a reducer, referring to Figure 1-3The worm shaft 2 is inserted into the card slot 4, and the limit strips 5 in the same card slot 4 are set as two, which are convenient for limiting the position of the worm shaft 2 and are arranged on both sides of the card slot 4. The worm shaft 2 is provided with a block 21 corresponding to the limit strip 5, so that the block 21 is stuck in the two limit strips 5, and the block 21 can slide left and right in the limit strip 5 by a corresponding distance. Both ends of the worm shaft 2 are sleeved with a fixed sealing plate 7, and the sealing plate connects the two housings 1 by bolts.

[0027] A worm gear shaft 3 is fitted into the bottom of the worm shaft 2. One end of the worm gear shaft 3 is rotatably set on the housing 1, and the other end passes through the housing 1. A tightening mechanism 8 is provided at the bottom of both ends of the worm gear shaft 3. The tightening mechanism 8 includes a tightening block 81, a telescopic rod 82, a spring 83 and a fixed block 84. The bottom of the worm gear shaft 3 is fitted with a tightening block 81, so that the tightening block 81 is in contact with the worm gear shaft 3. The bottom of the tightening block 81 is fixedly connected to the telescopic rod 82, and a spring 83 is sleeved at the thin end of the telescopic rod 82, so that the spring 83 squeezes the worm gear shaft 3 when it is extended and retracted, which can effectively prevent the worm gear shaft 3 from being separated from the worm shaft 2 due to long-term tooth friction. The end of the telescopic rod 82 away from the tightening block 81 is fixedly connected to the fixed block 84, and the fixed block 84 is fixedly set in the housing 1.

[0028] Reference Figure 3 The pressing block 81 is configured to be in a semicircular arc shape to facilitate contact with the worm gear shaft 3 .

[0029] Reference Figure 3 A limiting block 31 is sleeved on the worm gear shaft 3, and a blocking bar 32 is provided at the position of the housing 1 corresponding to the worm gear shaft 3 to prevent the worm gear shaft 3 from sliding and effectively limit the position.

[0030] The implementation principle of a reducer housing 1 in the embodiment of the present application is as follows:

[0031] When installing the reducer, first clamp the block 21 of the worm shaft 2 in the slot 4 with the limit bar 5 on the housing 1, and then fix the clamp 6 on the housing 1, and then fix the worm shaft 2 to prevent the worm shaft 2 from shaking due to loosening of the housing 1 after long-term use, thereby achieving further fixing and limiting effects. Insert one end of the worm gear shaft 3 into the housing 1, and limit the limit block 31 under the action of the blocking bar 32, and then fix the other housing 1 to the housing 1 with the worm shaft 2 installed through the fixed sealing plate 7, so that the clamping block 81 of the clamping mechanism 8 is against the bottom of the worm gear shaft 3, and under the action of the spring 83 and the telescopic rod 82, a certain thrust is exerted on the worm gear shaft 3, so that the gears of the worm gear shaft 3 are still in contact with the teeth of the worm shaft 2 after long-term use, thereby improving the service life of the reducer.

[0032] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, principle and application direction of the present application should be included in the scope of protection of the present application.

Claims

1. A housing for a speed reducer, comprising two mating housings (1), a worm shaft (2) and a worm wheel shaft (3), characterized in that: A group of slots (4) are provided at the connection of the two shells (1); a limit strip (5) is provided in the slot (4) on one shell (1); a clamp (6) corresponding to the slot (4) is provided on one side of the limit strip (5); the worm shaft (2) is inserted into the slot (4); a clamp (21) corresponding to the limit strip (5) is provided on the worm shaft (2); the clamp (21) can slide left and right within the limit strip (5) by a corresponding distance; fixed sealing plates (7) are sleeved on both ends of the worm shaft (2); the sealing plates connect the two shells (1) by bolts; The bottom of the worm shaft (2) is fitted with a worm gear shaft (3), and both ends of the worm gear shaft (3) are provided with a tightening mechanism (8), and the tightening mechanism (8) comprises a tightening block (81), a telescopic rod (82), a spring (83) and a fixed block (84). The bottom of the worm gear shaft (3) is fitted with a tightening block (81), and the bottom of the tightening block (81) is fixedly connected to the telescopic rod (82). The thin end of the telescopic rod (82) is sleeved with a spring (83), and the end of the telescopic rod (82) away from the tightening block (81) is fixedly connected to the fixed block (84).

2. The reducer housing (1) according to claim 1, characterized in that: Two limiting bars (5) are provided in the same card slot (4), and are arranged on both sides of the card slot (4).

3. The reducer housing according to claim 1, wherein: The fixing block (84) is fixedly arranged in the housing (1).

4. The reducer housing according to claim 1, wherein: The pressing block (81) is configured in a semicircular arc shape.

5. The reducer housing according to claim 1, wherein: One end of the worm gear shaft (3) is rotatably mounted on the housing (1), and the other end passes through the housing (1).

6. The speed reducer housing according to claim 1, wherein: A limiting block (31) is sleeved on the worm gear shaft (3), and a blocking bar (32) is provided on the housing (1) at a position corresponding to the worm gear shaft (3).

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