A rack and pinion backlash adjustment mechanism

Abstract

The present application relates to a kind of gear rack backlash adjusting mechanism, including first motor, mounting plate, backlash adjusting component, clamping component and limit installation component, the outer wall of one side of the first motor is installed with mounting plate, the outer wall between the mounting plate and first motor is fixed with backlash adjusting component, the outer wall of one side of the mounting plate is fixed with clamping component, the outer wall of one side of the mounting plate is fixed with limit installation component;The backlash adjusting component includes connecting flange, connecting hole, eccentric nut, eccentric hole, second gear, tooth belt, screw groove and fixed rod;The present application adopts backlash adjusting component, can carry out overall adjustment to the backlash of gear rack, and make the range of adjustment too large, so that the position of gear rack is aligned, improves the adjustment effect;Clamping component is adopted, can be automatically loosened by clamping structure during adjustment, without manual assistance, improves the clamping effect.

Description

TECHNICAL FIELD

[0001] The application relates to a gear and rack side gap adjusting mechanism. BACKGROUND

[0002] A gear refers to a mechanical element with teeth on a rim capable of continuously meshing and transmitting motion and power, and a rack is a special type of gear. When the gear and rack are assembled, the side gap of the gear and rack needs to be adjusted, so a side gap adjusting mechanism is required. However, the existing side gap adjusting mechanism generally needs manual fine adjustment, but the adjustment arc is too large, which causes the position of the gear and rack to deviate, reduces the adjustment effect, and the device does not have an automatic clamping structure when it is not adjusted, so the adjustment place cannot be automatically loosened during the adjustment process, and manual assistance is required, which reduces the clamping effect. In addition, during installation, the device is generally installed through bolts, which increases the installation difficulty of the device, thereby increasing the installation time and reducing the installation efficiency. SUMMARY

[0003] The application solves the problem of providing a gear and rack side gap adjusting mechanism that can adjust the side gap of the gear and rack as a whole, and the adjustment range is too large, so that the position of the gear and rack is aligned, the adjustment effect is improved, and the device can be automatically loosened through the clamping structure during adjustment, without the need for manual assistance, which improves the clamping effect. In addition, during installation, the device can be installed in a limiting manner, thereby simplifying the installation effect, reducing the installation time, and improving the installation efficiency.

[0004] In order to achieve the above-mentioned purpose, the application adopts the following technical scheme: a gear and rack side gap adjusting mechanism, comprising a first motor, a mounting plate, a side gap adjusting assembly, a clamping assembly and a limiting installation assembly, the mounting plate is installed on one side of the outer wall of the first motor, the side gap adjusting assembly is fixed on the outer wall between the mounting plate and the first motor, the clamping assembly is fixed on one side of the outer wall of the mounting plate, and the limiting installation assembly is fixed on one side of the outer wall of the mounting plate.

[0005] The side gap adjusting assembly comprises a connecting flange, a connecting hole, an eccentric nut, an eccentric hole, a second gear, a tooth belt, a threaded groove and a fixed rod, the connecting flange is fixedly connected to one side of the outer wall of the first motor, the eccentric nut is installed on one side of the outer wall of the connecting flange, the connecting hole is formed in the inner wall of one side of the connecting flange corresponding to the eccentric nut, the second gear is fixedly connected to one side of the outer wall of the eccentric nut, the tooth belt is meshed and installed on one side of the outer wall of the second gear, the threaded groove is formed in the inner wall of one side of the mounting plate corresponding to the eccentric nut, and the eccentric nut is threadedly connected to the inner wall of the threaded groove on one side, the fixed rod is fixedly connected to the inner wall of one side of the threaded groove, and the eccentric hole is formed in the inner wall of one side of the eccentric nut corresponding to the fixed rod.

[0006] Preferably, the clamping assembly comprises a second motor, a third gear, a guide hole, a fixed clamping plate, a fourth gear, a rotating shaft, a lead screw, a moving clamping plate, a threaded hole and a guide plate, the outer wall of one side of the mounting plate is symmetrically welded with the fixed clamping plate, one side of the fixed clamping plate is connected to the outer wall of the connecting flange, the outer wall of one side of the connecting flange is mounted with the moving clamping plate, the inner wall of one side of the mounting plate is symmetrically connected with the rotating shaft, the outer wall of one end of the rotating shaft is fixedly connected with the lead screw, the inner wall of one side of the moving clamping plate is provided with the threaded hole corresponding to the lead screw, the outer wall of the other end of the rotating shaft is fixedly connected with the fourth gear, the outer wall of one side of the fourth gear is engagedly mounted with the third gear, the inner wall of one side of the mounting plate is symmetrically embeddedly mounted with the second motor, and one end of the output shaft of the second motor is fixedly connected to the outer wall of the third gear, the outer wall of one side of the moving clamping plate is welded with the guide plate, and the inner wall of one side of the mounting plate is symmetrically provided with the guide hole corresponding to the guide plate.

[0007] Preferably, the limiting installation assembly comprises a third motor, an oval rotating wheel, a supporting plate, a guide hole, a moving plate, a limiting rod and a spring, the outer wall of one side of the mounting plate is symmetrically welded with the supporting plate, the outer wall between the supporting plates is symmetrically mounted with the moving plate, the outer wall of one side of the moving plate is symmetrically welded with the limiting rod, the inner wall of one side of the supporting plate is symmetrically provided with the guide hole corresponding to the limiting rod, the outer wall of one side of the supporting plate is symmetrically welded with the spring, the other end of the spring is welded to the outer wall of the moving plate, the outer wall between the moving plates is in contact with the oval rotating wheel, and the inner wall of one side of the mounting plate is embeddedly mounted with the third motor, and one end of the output shaft of the third motor is fixedly connected to the outer wall of the oval rotating wheel.

[0008] Preferably, the outer wall of one side of the mounting plate is mounted with the first gear, one end of the output shaft of the first motor is fixedly connected to the outer wall of the first gear, the outer wall of the top end of the first gear is engagedly mounted with the rack, the outer wall of one side of the rack is welded with the sliding plate, and the inner wall of one side of the mounting plate is provided with the sliding groove corresponding to the sliding plate.

[0009] Preferably, the second motor is a step motor.

[0010] Preferably, the moving clamping plate is Z-shaped, and one side of the moving clamping plate is in contact with the outer wall of the connecting flange.

[0011] Preferably, the outer wall of one side of the spring is sleeved with the outer wall of the limiting rod, and the number of the springs is four.

[0012] The side gap adjusting assembly can adjust the side gap of the gear and the rack as a whole, and the adjustment range is too large, so that the positions of the gear and the rack are aligned, and the adjustment effect is improved.

[0013] The clamping assembly can be automatically loosened by the clamping structure during adjustment, without manual assistance, thereby improving the clamping effect.

[0014] The limiting installation assembly can limit the installation of the equipment during installation, thereby simplifying the installation effect, reducing the installation time, and improving the installation efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a whole perspective view of the present application;

[0016] Figure 2 is an enlarged view of the A area structure in the present application Figure 1 ;

[0017] Figure 3 is another perspective view of the present application;

[0018] Figure 4 is an enlarged view of the B area structure in the present application Figure 3 ;

[0019] Figure 5 is a side view of the present application.

[0020] LEGEND

[0021] 1, first motor; 2, mounting plate; 3, side gap adjusting assembly; 4, clamping assembly; 5, limiting installation assembly; 6, first gear; 7, sliding groove; 8, rack; 9, sliding plate; 301, connecting flange; 302, connecting hole; 303, eccentric nut; 304, eccentric hole; 305, second gear; 306, toothed belt; 307, threaded groove; 308, fixed rod; 401, second motor; 402, third gear; 403, guide hole; 404, fixed clamping plate; 405, fourth gear; 406, rotating shaft; 407, screw rod; 408, moving clamping plate; 409, threaded hole; 4010, guide plate; 501, third motor; 502, oval rotating wheel; 503, support plate; 504, guide hole; 505, moving plate; 506, limiting rod; 507, spring. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0023] Embodiment one

[0024] Referring to Figures 3-4 A gear rack backlash adjusting mechanism, comprising a first motor 1, a mounting plate 2 and a backlash adjusting assembly 3, a clamping assembly 4, a limiting mounting assembly 5, the mounting plate 2 is installed on one side of the outer wall of the first motor 1, the outer wall between the mounting plate 2 and the first motor 1 is fixed with the backlash adjusting assembly 3, the clamping assembly 4 is fixed on one side of the outer wall of the mounting plate 2, and the limiting mounting assembly 5 is fixed on one side of the outer wall of the mounting plate 2; the first gear 6 is installed on one side of the outer wall of the mounting plate 2, and one end of the output shaft of the first motor 1 is fixedly connected to the outer wall of the first gear 6, the top end of the outer wall of the first gear 6 is engagedly installed with the rack 8, the rack 8 is welded with the sliding plate 9 on one side of the outer wall, and the sliding groove 7 is formed in the inner wall of one side of the mounting plate 2 corresponding to the sliding plate 9, the first motor 1 is started to make the first gear 6 rotate, thereby driving the sliding plate 9 on the rack 8 to move along the sliding groove 7, so as to detect the backlash of the first gear 6 and the rack 8 after adjustment;

[0025] The backlash adjusting assembly 3 comprises a connecting flange 301, a connecting hole 302, an eccentric nut 303, an eccentric hole 304, a second gear 305, a toothed belt 306, a threaded groove 307 and a fixed rod 308, the connecting flange 301 is fixedly connected to one side of the outer wall of the first motor 1, the eccentric nut 303 is installed on one side of the outer wall of the connecting flange 301, the connecting hole 302 is formed in the inner wall of one side of the connecting flange 301 corresponding to the eccentric nut 303, the second gear 305 is fixedly connected to one side of the outer wall of the eccentric nut 303, the toothed belt 306 is engagedly installed on one side of the outer wall of the second gear 305, the threaded groove 307 is formed in the inner wall of one side of the mounting plate 2 corresponding to the eccentric nut 303, and the eccentric nut 303 is threadedly connected to the inner wall of the threaded groove 307 on one side, the fixed rod 308 is fixedly connected to the inner wall of one side of the threaded groove 307, and the eccentric hole 304 is formed in the inner wall of one side of the eccentric nut 303 corresponding to the fixed rod 308.

[0026] Working principle: when the first gear 6 and rack 8 need to be adjusted, the eccentric nut 303 can be turned by wrench, the eccentric hole 304 in the eccentric nut 303 rotates along the fixed rod 308, then drives the second gear 305 to rotate, then through the action of the toothed belt 306, the four eccentric nuts 303 rotate at the same time, and because the eccentric distance of the eccentric nut 303 is greater than the backlash adjustment amount, the connecting flange slides by rotating the eccentric nut 303 and extruding the connecting hole 302, and in the rotating process of the eccentric nut 303, the eccentric nut 303 reciprocates to the inside of the threaded groove 307 through the action of the internal thread of the threaded groove 307, and because the mounting hole of the eccentric nut 303 in the connecting flange 301 is a long hole perpendicular to the adjustment direction, the eccentric nut 303 moves in the connecting hole 302, so that the eccentric distance changes, so that the first gear 6 and the rack 8 are aligned, then the first motor 1 is started to make the first gear 6 rotate, so that the sliding plate 9 on the rack 8 moves along the sliding groove 7, so that the backlash of the first gear 6 and the rack 8 after adjustment is detected, the backlash of the first gear 6 and the rack 8 can be adjusted as a whole, and the adjustment range is too large, so that the position of the first gear 6 and the rack 8 is aligned, improving the adjustment effect.

[0027] Example two

[0028] See Figures 1-2The clamping assembly 4 comprises a second motor 401, a third gear 402, a guide opening 403, a fixed clamping plate 404, a fourth gear 405, a rotating shaft 406, a lead screw 407, a movable clamping plate 408, a threaded hole 409 and a guide plate 4010. The fixed clamping plate 404 is symmetrically welded to one side outer wall of the mounting plate 2 and is in contact with the outer wall of the connecting flange 301 on one side. The movable clamping plate 408 is mounted on the outer wall of one side of the connecting flange 301. The rotating shaft 406 is symmetrically rotatably connected to the inner wall of one side of the mounting plate 2. The lead screw 407 is fixedly connected to the outer wall of one end of the rotating shaft 406. The threaded hole 409 is formed in the inner wall of one side of the movable clamping plate 408 corresponding to the lead screw 407. The fourth gear 405 is fixedly connected to the outer wall of the other end of the rotating shaft 406. The third gear 402 is in meshing connection with the outer wall of one side of the fourth gear 405. The second motor 401 is symmetrically embeddedly mounted on the inner wall of one side of the mounting plate 2, and the output shaft of the second motor 401 is fixedly connected to the outer wall of the third gear 402 on one end. The guide plate 4010 is welded to the outer wall of one side of the movable clamping plate 408. The guide opening 403 is symmetrically formed in the inner wall of one side of the mounting plate 2 corresponding to the guide plate 4010.

[0029] When the adjustment of the rack 8 and the first gear 6 is completed, the second motor 401 is started to rotate the third gear 402, thereby driving the fourth gear 405 to rotate. Then, under the action of the rotating shaft 406, the lead screw 407 is rotated, and then under the action of the threaded hole 409, the movable clamping plate 408 is moved towards the fixed clamping plate 404, thereby connecting and fixing the connecting flange 301 through the movable clamping plate 408 and the fixed clamping plate 404, so as to support and fix the first motor 1. During the adjustment, the clamping structure can be automatically loosened, without manual assistance, thereby improving the clamping effect.

[0030] Embodiment Three

[0031] See Figure 1 With Figure 5The limiting installation assembly 5 comprises a third motor 501, an oval rotating wheel 502, support plates 503, guide holes 504, moving plates 505, limiting rods 506 and springs 507, the outer walls of one side of the mounting plate 2 are symmetrically welded with the support plates 503, the outer walls between the support plates 503 are symmetrically provided with the moving plates 505, the outer walls of one side of the moving plates 505 are symmetrically welded with the limiting rods 506, the inner walls of one side of the support plates 503 are symmetrically provided with the guide holes 504 corresponding to the limiting rods 506, the outer walls of one side of the support plates 503 are symmetrically welded with the springs 507, and the other ends of the springs 507 are welded to the outer walls of the moving plates 505, the outer walls between the moving plates 505 are in contact with the oval rotating wheel 502, the inner walls of one side of the mounting plate 2 are inlaid with the third motor 501, and one end of the output shaft of the third motor 501 is fixed to the outer wall of the oval rotating wheel 502; one side of the springs 507 is sleeved on the outer wall of the limiting rod 506, and the number of the springs 507 is four, when the oval rotating wheel 502 is reset, the limiting rod 506 is moved out from the inside of the specified position under the action of the spring 507.

[0032] Firstly, the mounting plate 2 is placed to the specified position, then the third motor 501 is started to make the oval rotating wheel 502 rotate by ninety degrees, so that the moving plate 505 is extruded by the protruding structure of the oval rotating wheel 502, so that the limiting rod 506 moves along the guide hole 504 in the support plate 503, and then the limiting rod 506 is inserted into the inside of the specified position, so that the mounting plate 2 is limited and installed, when it is needed to be disassembled, the third motor 501 is started to reset the oval rotating wheel 502, then the limiting rod 506 is moved out from the inside of the specified position under the action of the spring 507, so that the equipment is disassembled, when the equipment is installed, the equipment can be limited and installed, so that the installation effect is simplified, and then the installation time is reduced, and the installation efficiency is improved.

[0033] The above is only the preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A gear rack backlash adjustment mechanism, characterized in that: The invention comprises a first motor (1), a mounting plate (2), a side clearance adjustment component (3), a clamping component (4) and a position limiting mounting component (5), wherein the mounting plate (2) is mounted on an outer wall of one side of the first motor (1), the side clearance adjustment component (3) is fixed on the outer wall between the mounting plate (2) and the first motor (1), the clamping component (4) is fixed on an outer wall of one side of the mounting plate (2), and the position limiting mounting component (5) is fixed on an outer wall of one side of the mounting plate (2); the side clearance adjustment component (3) comprises a connecting flange (301), a connecting hole (302), an eccentric nut (303), an eccentric hole (304), a second gear (305), a toothed belt (306), a threaded groove (307) and a fixing rod (308), the connecting flange (301) is fixedly connected to the outer wall of one side of the first motor (1), and the clamping component (4) is fixed on the outer wall of one side of the mounting plate (2). ), an eccentric nut (303) is distributed and installed on the outer wall of one side of the connecting flange (301), a connecting hole (302) is opened on the inner wall of one side of the connecting flange (301) corresponding to the eccentric nut (303), a second gear (305) is fixedly connected to the outer wall of one side of the eccentric nut (303), a toothed belt (306) is meshed and installed on the outer wall of one side of the second gear (305), a thread groove (307) is opened on the inner wall of one side of the mounting plate (2) corresponding to the eccentric nut (303), and one side of the eccentric nut (303) is threadedly connected to the inner wall of the thread groove (307), a fixing rod (308) is fixedly connected to the inner wall of one side of the thread groove (307), and an eccentric hole (304) is opened on the inner wall of one side of the eccentric nut (303) corresponding to the fixing rod (308);The clamping assembly (4) comprises a second motor (401), a third gear (402), a guide port (403), a fixed clamping plate (404), a fourth gear (405), a rotating shaft (406), a screw rod (407), a movable clamping plate (408), a threaded hole (409) and a guide plate (4010). The fixed clamping plate (404) is symmetrically welded on the outer wall of one side of the mounting plate (2), and one side of the fixed clamping plate (404) is in contact with the outer wall of the connecting flange (301). The movable clamping plate (408) is installed on the outer wall of one side of the connecting flange (301). The inner wall of one side of the mounting plate (2) is symmetrically welded on the fixed clamping plate (404). A rotating shaft (406) is rotatably connected, a screw rod (407) is fixedly connected to the outer wall of one end of the rotating shaft (406), a threaded hole (409) is provided on the inner wall of one side of the movable clamping plate (408) corresponding to the screw rod (407), a fourth gear (405) is fixedly connected to the outer wall of the other end of the rotating shaft (406), a third gear (402) is meshedly mounted on the outer wall of one side of the fourth gear (405), a second motor (401) is symmetrically inlaid and mounted on the inner wall of one side of the mounting plate (2), and one end of the output shaft of the second motor (401) is fixedly connected to the outer wall of the third gear (402), and the movable clamping plate (408) is provided with a threaded hole (409) corresponding to the screw rod (407), and a fourth gear (405) is fixedly connected to the outer wall of the other end of the rotating shaft (406), a third gear (402) is meshedly mounted on the outer wall of one side of the fourth gear (405), and a second motor (401) is symmetrically inlaid and mounted on the inner wall of one side of the mounting plate (2), and one end of the output shaft of the second motor (401) is fixedly connected to the outer wall of the third gear (402). A guide plate (4010) is welded on the outer wall of one side of the clamping plate (408), and a guide opening (403) is symmetrically opened on the inner wall of one side of the mounting plate (2) corresponding to the guide plate (4010); the limit mounting assembly (5) comprises a third motor (501), an elliptical rotating wheel (502), a support plate (503), a guide hole (504), a movable plate (505), a limit rod (506) and a spring (507), a support plate (503) is symmetrically welded on the outer wall of one side of the mounting plate (2), and a movable plate (505) is symmetrically installed on the outer wall between the support plates (503), and the movable plate (505) is symmetrically mounted on the outer wall between the support plates (503). A limiting rod (506) is symmetrically welded on one side of the outer wall, a guide hole (504) is symmetrically opened on the inner wall of one side of the support plate (503) corresponding to the limiting rod (506), a spring (507) is symmetrically welded on one side of the outer wall of the support plate (503), and the other end of the spring (507) is welded to the outer wall of the movable plate (505); an elliptical rotating wheel (502) is contacted and connected on the outer wall between the movable plates (505), a third motor (501) is embedded and installed on the inner wall of one side of the mounting plate (2), and one end of the output shaft of the third motor (501) is fixedly connected to the outer wall of the elliptical rotating wheel (502).

2. The gear rack backlash adjustment mechanism according to claim 1, characterized in that: A first gear (6) is mounted on an outer wall of one side of the mounting plate (2), and one end of the output shaft of the first motor (1) is fixedly connected to the outer wall of the first gear (6). A rack (8) is mounted on the outer wall of the top end of the first gear (6) in meshing engagement. A slide plate (9) is welded on an outer wall of one side of the rack (8), and a slide groove (7) is provided on an inner wall of one side of the mounting plate (2) corresponding to the slide plate (9).

3. The gear rack backlash adjustment mechanism according to claim 1, characterized in that: The second motor (401) is a stepping motor.

4. The gear rack backlash adjustment mechanism according to claim 1, characterized in that: The movable clamping plate (408) is in a Z-shape, and one side of the movable clamping plate (408) is in contact with and connected to the outer wall of the connecting flange (301).

5. The gear rack backlash adjustment mechanism according to claim 1, characterized in that: One side of the spring (507) is internally sleeved on the outer wall of the limiting rod (506), and there are four springs (507).

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