Gear engaging gap adjustable speed reducer

Abstract

The utility model provides a kind of gear engagement clearance adjustable speed reducer, it is related to the field of speed reducer, including shell, the inside both sides of shell are rotated with output shaft by bearing and are penetrated, the outside wall of output shaft is connected with driven bevel gear, the inside one side of shell is rotated with input shaft by bearing and is penetrated, the end of input shaft is fixed with driving bevel gear, the inside of output shaft is provided with adjusting mechanism, and the one end of adjusting mechanism is provided with limit mechanism;The application is set by adjusting mechanism, by being placed in hexagonal groove inside hexagonal wrench, rotating knob, make screw rod rotate, make moving block move in the outside of limit rod, drive connecting block to move, adjust the gap between driven bevel gear and driving bevel gear tooth, avoid gap too big, so that it is more simple and convenient to adjust, save time, avoid to disassemble speed reducer and change gear position, improve the practicability of device, improve adjustment efficiency.

Description

Technical Field

[0001] This utility model is specifically a speed reducer with adjustable gear meshing clearance, belonging to the field of speed reducer technology. Background Technology

[0002] A speed reducer is an independent component consisting of gear transmission, worm transmission, or gear-worm transmission enclosed in a rigid housing. It is commonly used as a speed reduction transmission device between the prime mover and the working machine, playing a role in matching speeds and transmitting torque between the prime mover and the working machine or actuator. It is widely used in modern machinery. Speed ​​reducers are generally used in low-speed, high-torque transmission equipment, using a small gear on the input shaft of the speed reducer to mesh with a large gear on the output shaft to achieve the purpose of speed reduction from electric motors, internal combustion engines, or other high-speed power sources.

[0003] Chinese Patent Publication No. CN216789127U discloses a bevel gear reducer with adjustable gear clearance, comprising: a reducer housing; a first gear disposed inside the reducer housing; a second gear disposed on one side of the bottom end of the first gear; and an adjustment mechanism disposed on the outer wall of the first gear and the second gear, extending through to the outside of the reducer housing. The patent also claims that by setting up the adjustment mechanism, the clearance between the first and second gear blocks can be adjusted, thereby improving the service life of the device.

[0004] As can be seen from the above patent, when a speed reducer is used for a long time, the gears are prone to develop gaps due to wear. The existing methods for adjusting the gear gaps inside the speed reducer are complicated and cumbersome, requiring the gears to be disassembled and adjusted, which is not convenient for quick adjustment and reduces adjustment efficiency. Utility Model Content

[0005] The purpose of this utility model is to provide a speed reducer with adjustable gear meshing clearance in order to solve the above-mentioned problems. This solves the problem that the existing technology has complicated and cumbersome methods for adjusting the gear clearance inside the speed reducer, which requires disassembling the gears to adjust their positions, making it inconvenient to adjust quickly and reducing adjustment efficiency.

[0006] This utility model is achieved through the following technical solution: a reducer with adjustable gear meshing clearance, including a housing, an output shaft rotatably passing through the inner two sides of the housing via bearings, a driven bevel gear connected to the outer side wall of the output shaft, an input shaft rotatably passing through the inner side of the housing via bearings, a driving bevel gear fixed to the end of the input shaft, and the driving bevel gear meshing with the driven bevel gear, and an adjustment mechanism is provided inside the output shaft, with a limit mechanism provided at one end of the adjustment mechanism.

[0007] Preferably, the adjustment mechanism includes a mounting cavity opened inside the output shaft, a screw is fixed through the middle of one side of the mounting cavity by a bearing, a moving block is screwed to the outside of the screw, a knob is fixed to one end of the screw, and connecting blocks are symmetrically fixed to the inner sidewall of the driven bevel gear.

[0008] Preferably, the adjustment mechanism further includes a hexagonal groove formed in the middle of one side of the connecting block, limit rods symmetrically fixed between the two sides of the mounting cavity, and through grooves symmetrically formed through the inner wall of the mounting cavity.

[0009] Preferably, the movable block slides on the outer wall of the limiting rod, and the outer wall of the movable block is in contact with the outer wall of the mounting cavity to limit the movable block, so that the movable block moves outside the screw when the screw rotates.

[0010] Preferably, the connecting block is symmetrically fixed to the outer side wall of the moving block, and the connecting block is located inside the through groove, and the outer side wall of the connecting block is in contact with the inner side wall of the through groove to limit the position of the connecting block.

[0011] Preferably, the limiting mechanism includes a rotating groove formed at one end of the output shaft, a positioning groove evenly formed on the inner sidewall of the rotating groove, a moving cavity formed inside the knob, a return spring symmetrically fixed at the bottom of the moving cavity, a connecting plate fixed at the top of the return spring, and a positioning block fixed at the top center of the connecting plate.

[0012] Preferably, the outer wall of the knob fits against the inner wall of the rotating groove, facilitating the embedding of the positioning block within the positioning groove. Both sides of the positioning groove and both sides of the positioning block are provided with inclined surfaces, so that when the knob is rotated, the inclined surfaces of the positioning groove press against the inclined surfaces of the positioning block, causing the positioning block to move. The positioning block penetrates the outer wall of the knob, and the positioning block and the knob are slidably connected.

[0013] This utility model provides a speed reducer with adjustable gear meshing clearance, which has the following beneficial effects:

[0014] 1. This application, through the setting of the adjustment mechanism, when the gap between gears is large, allows for fine adjustment by placing a hexagonal wrench inside the hexagonal slot and turning the knob to rotate the screw. Utilizing the setting of the limit rod, when the screw rotates, the moving block moves outside the limit rod, driving the connecting block to move, thereby moving the driven bevel gear for fine adjustment. This adjusts the gap between the driven and driving bevel gear teeth, preventing excessive gaps, thus making adjustment simpler and more convenient, saving time, avoiding the need to disassemble the reducer and change the gear positions, improving the practicality of the device, and increasing adjustment efficiency.

[0015] 2. This application, through the setting of a limiting mechanism, causes the positioning block to deflect when the knob is rotated, thereby causing the inclined surface of the positioning groove to press against the inclined surface of the positioning block, causing the positioning block to move, driving the connecting plate to move, and pressing the return spring. When the positioning block is aligned with the next positioning groove, the return spring resets the connecting plate to drive the positioning block to reset, so that the positioning block is embedded in the positioning groove, fixing the knob, thereby preventing the knob from loosening, ensuring the stability after adjustment, preventing the gear clearance from being affected, and improving the practicality of the device. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the adjustment mechanism structure of this utility model;

[0018] Figure 3 An enlarged structural view of the positioning groove of this utility model is provided;

[0019] Figure 4 This is a schematic diagram of the reset spring mounting structure of this utility model.

[0020] [Explanation of Key Component Symbols]

[0021] 1. Outer shell;

[0022] 2. Output shaft; 201. Driven bevel gear;

[0023] 3. Input shaft; 301. Drive bevel gear;

[0024] 4. Adjustment mechanism; 401. Mounting cavity; 402. Screw; 403. Moving block; 404. Knob; 405. Connecting block; 406. Hexagonal groove; 407. Limiting rod; 408. Through groove;

[0025] 5. Limiting mechanism; 501. Rotating groove; 502. Positioning groove; 503. Moving cavity; 504. Return spring; 505. Connecting plate; 506. Positioning block. Detailed Implementation

[0026] This utility model provides a speed reducer with adjustable gear meshing clearance.

[0027] Please see Figure 1The device includes a housing 1, an output shaft 2 that rotates through the two sides of the housing 1 via bearings, a driven bevel gear 201 connected to the outer wall of the output shaft 2, an input shaft 3 that rotates through the one side of the housing 1 via bearings, a driving bevel gear 301 fixed to the end of the input shaft 3, and the driving bevel gear 301 meshing with the driven bevel gear 201, and an adjustment mechanism 4 is provided inside the output shaft 2, with a limit mechanism 5 provided at one end of the adjustment mechanism 4.

[0028] Please refer to it again. Figure 2 The adjustment mechanism 4 includes a mounting cavity 401 inside the output shaft 2. A screw 402 is fixed through a bearing in the middle of one side of the mounting cavity 401. A moving block 403 is screwed to the outer side of the screw 402. A knob 404 is fixed to one end of the screw 402. Connecting blocks 405 are symmetrically fixed to the inner wall of the driven bevel gear 201. The adjustment mechanism 4 also includes a hexagonal groove 406 in the middle of one side of the connecting block 405. Limiting rods 407 are symmetrically fixed between the two sides of the mounting cavity 401. Through grooves 408 are symmetrically opened through the inner wall of the mounting cavity 401. The moving block 403 slides on the outer wall of the limiting rod 407, and the outer wall of the moving block 403 is in contact with the outer wall of the mounting cavity 401. The connecting blocks 405 are symmetrically fixed to the outer wall of the moving block 403. The connecting block 405 is located inside the through groove 408, and the outer wall of the connecting block 405 is in contact with the inner wall of the through groove 408. Through the setting of the adjusting mechanism 4, when the gap between the gears is large, by placing a hexagonal wrench inside the hexagonal groove 406 and rotating the knob 404, the screw 402 rotates. Using the setting of the limiting rod 407, when the screw 402 rotates, the moving block 403 moves outside the limiting rod 407, driving the connecting block 405 to move, thereby moving the driven bevel gear 201 for fine-tuning. This adjusts the gap between the teeth of the driven bevel gear 201 and the driving bevel gear 301, preventing excessive gaps. This makes adjustment simpler and more convenient, saves time, avoids disassembling the reducer to change the gear position, improves the practicality of the device, and increases adjustment efficiency.

[0029] Please refer to it again. Figure 3 and Figure 4The limiting mechanism 5 includes a rotating groove 501 formed at one end of the output shaft 2. Positioning grooves 502 are evenly distributed on the inner wall of the rotating groove 501. A moving cavity 503 is formed inside the knob 404. Return springs 504 are symmetrically fixed to the bottom of the moving cavity 503. A connecting plate 505 is fixed to the top of the return spring 504. A positioning block 506 is fixed to the top center of the connecting plate 505. The outer wall of the knob 404 fits against the inner wall of the rotating groove 501. Inclined surfaces are provided on both sides of the positioning grooves 502 and both sides of the positioning block 506. The positioning block 506 penetrates the outer wall of the knob 404, and the positioning block 506 is slidably connected to the knob 404. By setting the limiting mechanism 5, when the knob 404 is rotated, the positioning block 506 is deflected, thereby causing the inclined surface of the positioning groove 502 to press against the inclined surface of the positioning block 506, causing the positioning block 506 to move, driving the connecting plate 505 to move, and pressing the return spring 504. When the positioning block 506 is aligned with the next positioning groove 502, the return spring 504 resets, causing the connecting plate 505 to drive the positioning block 506 to reset, so that the positioning block 506 is embedded in the positioning groove 502, fixing the knob 404, thereby preventing the knob 404 from loosening, ensuring the stability after adjustment, preventing the gear clearance from being affected, and improving the practicality of the device.

[0030] When using this utility model:

[0031] Working Principle: When wear occurs between gears due to prolonged use of the reducer, it is necessary to adjust the gear clearance. Place a hex wrench inside the hexagonal slot 406 and rotate the knob 404 to rotate the screw 402. Utilizing the limiting rod 407, as the screw 402 rotates, the moving block 403 moves outside the limiting rod 407, driving the connecting block 405 to move, thereby moving the driven bevel gear 201 for fine-tuning. This adjusts the clearance between the driven bevel gear 201 and the driving bevel gear 301, preventing excessive clearance and simplifying the adjustment process. When the knob 404 is rotated, the positioning block 506 deflects, causing the inclined surface of the positioning groove 502 to press against the inclined surface of the positioning block 506, thus moving the positioning block 506 and driving the connecting plate 505 to move. This presses against the return spring 504. When the positioning block 506 aligns with the next positioning groove 502, the return spring 504 resets the connecting plate 505, causing the positioning block 506 to reset and embed itself in the positioning groove 502, thus fixing the knob 404 and preventing it from becoming loose, ensuring stability after adjustment.

[0032] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A speed reducer with adjustable gear meshing clearance, comprising a housing (1), wherein an output shaft (2) is rotatably oriented through a bearing between the two inner sides of the housing (1), a driven bevel gear (201) is connected to the outer side wall of the output shaft (2), and an input shaft (3) is rotatably oriented through a bearing on one inner side of the housing (1), wherein a driving bevel gear (301) is fixed to the end of the input shaft (3), and the driving bevel gear (301) and the driven bevel gear (201) are meshed together, characterized in that: An adjustment mechanism (4) is provided inside the output shaft (2), and a limit mechanism (5) is provided at one end of the adjustment mechanism (4). The adjustment mechanism (4) includes a mounting cavity (401) opened inside the output shaft (2). A screw (402) is fixed through a bearing in the middle of one side of the mounting cavity (401). A moving block (403) is screwed to the outside of the screw (402). A knob (404) is fixed to one end of the screw (402). Connecting blocks (405) are symmetrically fixed to the inner sidewall of the driven bevel gear (201). The limiting mechanism (5) includes a rotating groove (501) opened at one end of the output shaft (2). The inner sidewall of the rotating groove (501) is evenly provided with positioning grooves (502). The knob (404) is provided with a moving cavity (503). The bottom of the moving cavity (503) is symmetrically fixed with a return spring (504). The top of the return spring (504) is fixed with a connecting plate (505). The top center of the connecting plate (505) is fixed with a positioning block (506).

2. The gear reducer with adjustable gear meshing clearance according to claim 1, characterized in that: The adjustment mechanism (4) also includes a hexagonal groove (406) opened in the middle of one side of the connecting block (405), a limit rod (407) symmetrically fixed between the two sides of the mounting cavity (401), and a through groove (408) symmetrically opened through the inner wall of the mounting cavity (401).

3. A speed reducer with adjustable gear meshing clearance according to claim 2, characterized in that: The movable block (403) slides on the outer wall of the limiting rod (407), and the outer wall of the movable block (403) is in contact with the outer wall of the mounting cavity (401).

4. A speed reducer with adjustable gear meshing clearance according to claim 3, characterized in that: The connecting block (405) is symmetrically fixed to the outer side wall of the moving block (403), and the connecting block (405) is located inside the through groove (408), and the outer side wall of the connecting block (405) is in contact with the inner side wall of the through groove (408).

5. A speed reducer with adjustable gear meshing clearance according to claim 4, characterized in that: The outer wall of the knob (404) fits against the inner wall of the rotating groove (501). Both sides of the positioning groove (502) and both sides of the positioning block (506) are provided with inclined surfaces. The positioning block (506) penetrates the outer wall of the knob (404) and is slidably connected to the knob (404).

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