Gear meshing floating adjustment mechanism

Abstract

This invention discloses a gear meshing floating adjustment mechanism. The invention relates to the technical field of automated logistics systems using gear and rack transmissions. It includes a fixed base, a rack fixedly connected to one side surface of the fixed base, and a ground rail fixedly connected to the top surface of the fixed base. A lower crossbeam is mounted on the ground rail, and an upper crossbeam is mounted on top of the lower crossbeam. A supporting traveling frame is fixedly connected to the lower crossbeam, and traveling wheels are mounted on the supporting traveling frame. A floating seat is located on one side of the supporting traveling frame, and multiple linear guide rail pairs are provided between the supporting traveling frame and the floating seat. A traveling mechanism is located on one side of the floating seat. This gear meshing floating adjustment mechanism adjusts the meshing clearance to a suitable value using adjusting screws, and then a servo motor drives the floating seat to move slightly. This reduces manufacturing costs and shortens the cycle time, effectively improves the meshing condition, increases transmission accuracy, avoids noise caused by uneven meshing, and extends service life.

Description

Technical Field

[0001] This invention relates to the field of automated logistics systems using gear and rack transmission, specifically to a gear meshing floating adjustment mechanism. Background Technology

[0002] In automated logistics systems, the traveling shafts of high-precision RGVs or large-scale stacker cranes typically use top and bottom rails or dual bottom rails for support and guidance. Long-distance travel is achieved by a motor-driven reducer that drives an output gear and rack through meshing transmission. The parallelism of the guide rails and rack installation is crucial for smooth operation. If the parallelism exceeds the allowable tolerance, jamming and sticking will occur, causing the motor load to spike, overheating, and malfunctioning. In severe cases, it can burn out the motor and damage the gears and rack. To ensure the parallelism between the rack and guide rails and to guarantee proper gear meshing, existing technologies involve precision machining of the rack mounting base and guide rail mounting base. To reduce installation seams, the base is generally quite long (over 4 meters), requiring large-scale gantry milling machines for processing, which is very costly. In addition, to reduce deformation and vibration during processing, the base structure needs sufficient rigidity and must undergo more than two aging stress relief treatments, which also increases manufacturing costs. If the travel distance is long (over 20 meters), multiple sections need to be spliced, making installation and adjustment difficult and time-consuming. In order to reduce manufacturing costs and shorten the cycle, some logistics or automation companies can only increase the gear and rack meshing clearance to accommodate the non-parallelism between the rack and the guide rail. However, this will greatly reduce the transmission accuracy, and uneven meshing will lead to noise and premature wear of the gears and racks. Summary of the Invention

[0003] (a) Technical problems to be solved

[0004] To address the shortcomings of existing technologies, this invention provides a gear meshing floating adjustment mechanism. This mechanism solves the problems of high cost, long cycle time, and difficult manufacturing and adjustment associated with existing technologies for parallelism of the guide rails and racks of the traveling shafts of logistics systems (RGVs) or stacker cranes, as well as good gear meshing. Increasing the meshing clearance can reduce manufacturing and adjustment costs, but it cannot be used for high-precision conveying and transfer, and it also has problems such as high noise and short service life.

[0005] (II) Technical Solution

[0006] To achieve the above objectives, the present invention provides the following technical solution: a gear meshing floating adjustment mechanism, comprising a fixed base, a rack fixedly connected to one side surface of the fixed base, a ground rail fixedly connected to the top surface of the fixed base, a lower crossbeam on the ground rail, an upper crossbeam on the top of the lower crossbeam, a supporting walking frame fixedly connected to the lower crossbeam, a walking wheel on the supporting walking frame, a floating seat on one side of the supporting walking frame, multiple linear guide rail pairs between the supporting walking frame and the floating seat, a walking mechanism on one side of the floating seat, and a guiding mechanism on one side of the walking mechanism;

[0007] The walking mechanism includes a mounting frame, a speed reducer is mounted on the mounting frame, a servo motor is mounted on the top of the speed reducer, a gear is mounted on the bottom of the speed reducer, a follower wheel is mounted on one side of the mounting frame, and an adjusting screw is mounted on one side of the follower wheel;

[0008] The guiding mechanism includes a guide frame, two auxiliary guide wheels on one side of the guide frame, and a cleaning brush fixedly connected to one side of the guide frame.

[0009] Preferably, the rack meshes with the gear, and the follower wheel is in contact with one side surface of the rack.

[0010] Preferably, the direction of the plurality of linear guide rail pairs is perpendicular to the direction of the rack, and the floating seat is slidably connected to the support frame through the plurality of linear guide rail pairs.

[0011] Preferably, the traveling wheel is located on top of the ground rail, and the two auxiliary guide wheels are located on both sides of the ground rail.

[0012] Preferably, the cleaning brush is detachably connected to the guide frame, and the cleaning brush is in contact with the top surface of the ground rail.

[0013] Preferably, the mounting bracket is fixedly mounted on the floating seat, and the guide frame is fixedly mounted on the supporting walking frame.

[0014] Preferably, the adjusting screw is fitted with a locking nut, and the adjusting screw and the locking nut are threadedly connected.

[0015] (III) Beneficial Effects

[0016] This invention provides a gear meshing floating adjustment mechanism. Compared with the prior art, it has the following advantages:

[0017] Beneficial effects:

[0018] This gear meshing floating adjustment mechanism adjusts the meshing gap to a suitable value by adjusting the screw. Then, the servo motor drives the floating seat to move slightly along the linear guide pair in a direction perpendicular to the walking direction, so that the gear is always in contact with the rack, improving the meshing condition, reducing manufacturing costs and shortening the cycle. It can also effectively improve the meshing condition, improve transmission accuracy, avoid noise caused by uneven meshing, and extend service life. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 This is a partial structural diagram of the present invention;

[0021] Figure 3 For the present invention Figure 2 Right side structural diagram;

[0022] Figure 4 This is a schematic diagram of the auxiliary guiding mechanism of the present invention;

[0023] Figure 5 This is a schematic diagram of the walking mechanism of the present invention.

[0024] In the diagram: 1. Fixed base; 2. Upper crossbeam; 3. Lower crossbeam; 4. Traveling mechanism; 401. Mounting bracket; 402. Servo motor; 403. Gear; 404. Follower wheel; 405. Adjusting screw; 406. Reducer; 5. Guide mechanism; 501. Guide frame; 502. Auxiliary guide wheel; 503. Cleaning brush; 6. Rack; 7. Floating seat; 8. Traveling wheel; 9. Linear guide pair; 10. Ground rail. Detailed Implementation

[0025] The technical solutions in the embodiments of the present invention have been clearly and completely described. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] Please see Figure 1-5This invention provides a technical solution: a gear meshing floating adjustment mechanism, including a fixed base 1. A rack 6 is fixedly connected to one side surface of the fixed base 1, and the rack 6 meshes with a gear 403, so that the gear 403 can roll along the rack 6 when it rotates. A ground rail 10 is fixedly connected to the top surface of the fixed base 1, and a lower crossbeam 3 is provided on the ground rail 10. An upper crossbeam 2 is provided on the top of the lower crossbeam 3. A supporting walking frame is fixedly connected to the lower crossbeam 3, and a walking wheel 8 is provided on the supporting walking frame. A floating seat 7 is provided on one side of the supporting walking frame. Multiple linear guide rail pairs 9 are provided between the supporting walking frame and the floating seat 7. The direction of the multiple linear guide rail pairs 9 is perpendicular to the direction of the rack 6, and the floating seat 7 is slidably connected to the supporting walking frame through the multiple linear guide rail pairs 9, so that the floating seat 7 can... The floating seat 7 can move slightly along the linear guide pair 9 in a direction perpendicular to the travel direction, so that the gear 403 is always in contact with the rack 6, improving the meshing condition. The floating seat 7 is provided with a traveling mechanism 4 on one side and a guide mechanism 5 on the other side. The traveling mechanism 4 can drive the floating seat 7 to move along the rack 6, and at the same time, the floating seat 7 can move slightly along the linear guide pair 9 in a direction perpendicular to the travel direction, so that the gear 403 is always in contact with the rack 6, improving the meshing condition, reducing manufacturing costs and shortening the cycle, and can effectively improve the meshing condition, improve transmission accuracy, avoid noise caused by uneven meshing, extend service life, and the guide mechanism 5 can play a guiding role to improve the stability of travel.

[0027] The traveling mechanism 4 includes a mounting frame 401, which is fixedly mounted on the floating seat 7, enabling the floating seat 7 to move. A reducer 406 is mounted on the mounting frame 401, with a servo motor 402 at the top and a gear 403 at the bottom. The reducer 406 reduces the speed of the servo motor 402 and increases its output torque, allowing the servo motor 402 to drive the floating seat 7 via the gear 403 and rack 6. A follower wheel 404 is located on one side of the mounting frame 401, and the follower wheel 404 is in contact with one side surface of the rack 6. An adjusting screw 405 is provided on one side of the driving wheel 404. A locking nut is fitted on the adjusting screw 405. The adjusting screw 405 and the locking nut are threaded together, so that the position of the following wheel 404 can be adjusted by moving the adjusting screw 405 and can be fixed by using the locking nut. The meshing gap between the gear 403 and the rack 6 can be controlled by adjusting the following wheel 404 left and right by adjusting the adjusting screw 405. When the meshing gap is adjusted to a suitable value, the locking nut attached to the adjusting screw 405 can be locked to ensure that the gear 403 and the rack 6 are driven according to the fixed meshing gap, which is not affected by the parallelism of the rack 6 and the guide rail.

[0028] The guiding mechanism 5 includes a guide frame 501, which is fixedly installed on the supporting walking frame. Two auxiliary guide wheels 502 are provided on one side of the guide frame 501. The walking wheel 8 is located on the top of the ground rail 10. The two auxiliary guide wheels 502 are respectively located on both sides of the ground rail 10. A cleaning brush 503 is fixedly connected to one side of the guide frame 501. The cleaning brush 503 is detachably connected to the guide frame 501, which facilitates the replacement of the cleaning brush 503. The cleaning brush 503 is in contact with the top surface of the ground rail 10 and can clean the dust on the surface of the ground rail 10. It can move on the ground rail 10 through the auxiliary guide wheels 502 and the walking wheel 8, thereby effectively improving the stability of walking.

[0029] In use, the meshing clearance between gear 403 and rack 6 is controlled by adjusting the follower wheel 404 left and right with adjusting screw 405. When the meshing clearance is adjusted to a suitable value, the locking nut attached to adjusting screw 405 is locked to ensure that gear 403 and rack 6 transmit power according to a fixed meshing clearance, unaffected by the parallelism of rack 6 and guide rail installation. Then, servo motor 402 drives gear 403 to rotate through reducer 406. Gear 403 rotates and rolls on rack 6, thereby driving floating seat 7 to move. At the same time, floating seat 7 can move slightly along linear guide rail pair 9 in a direction perpendicular to the travel direction, so that gear 403 is always in contact with rack 6, improving meshing condition, reducing manufacturing cost and shortening cycle time. It can also effectively improve meshing condition, improve transmission accuracy, avoid noise caused by uneven meshing, and extend service life.

[0030] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0031] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0032] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A gear meshing floating adjustment mechanism, comprising a fixed base (1), characterized in that: A rack (6) is fixedly connected to one side surface of the fixed base (1), and a ground rail (10) is fixedly connected to the top surface of the fixed base (1). A lower crossbeam (3) is provided on the ground rail (10), and an upper crossbeam (2) is provided on the top of the lower crossbeam (3). A support walking frame is fixedly connected to the lower crossbeam (3), and a walking wheel (8) is provided on the support walking frame. A floating seat (7) is provided on one side of the support walking frame. Multiple linear guide rail pairs (9) are provided between the support walking frame and the floating seat (7). A walking mechanism (4) is provided on one side of the floating seat (7), and a guide mechanism (5) is provided on one side of the walking mechanism (4). The walking mechanism (4) includes a mounting frame (401), a reducer (406) is provided on the mounting frame (401), a servo motor (402) is provided on the top of the reducer (406), a gear (403) is provided at the bottom of the reducer (406), a follower wheel (404) is provided on one side of the mounting frame (401), and an adjusting screw (405) is provided on one side of the follower wheel (404). The guiding mechanism (5) includes a guide frame (501), two auxiliary guide wheels (502) are provided on one side of the guide frame (501), and a cleaning brush (503) is fixedly connected to one side of the guide frame (501). The direction of the multiple linear guide pairs (9) is perpendicular to the direction of the rack (6), and the floating seat (7) is slidably connected to the support frame through the multiple linear guide pairs (9).

2. The gear meshing floating adjustment mechanism according to claim 1, characterized in that: The rack (6) meshes with the gear (403), and the follower wheel (404) is in contact with one side surface of the rack (6).

3. The gear meshing floating adjustment mechanism according to claim 1, characterized in that: The walking wheel (8) is set on the top of the ground rail (10), and the two auxiliary guide wheels (502) are respectively set on both sides of the ground rail (10).

4. The gear meshing floating adjustment mechanism according to claim 1, characterized in that: The cleaning brush (503) is detachably connected to the guide frame (501), and the cleaning brush (503) is in contact with the top surface of the ground rail (10).

5. The gear meshing floating adjustment mechanism according to claim 1, characterized in that: The mounting bracket (401) is fixedly mounted on the floating seat (7), and the guide frame (501) is fixedly mounted on the support walking frame.

6. The gear meshing floating adjustment mechanism according to claim 1, characterized in that: The adjusting screw (405) is fitted with a locking nut, and the adjusting screw (405) is threadedly connected to the locking nut.

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