Cam roller type gear shift mechanism without backlash

Abstract

This utility model relates to the field of cam roller technology and discloses a cam roller type backlash-free transmission mechanism, including a mounting box. An inspection door is bolted to the left end of the mounting box. A roller is installed inside the mounting box, and a fixed shaft is fixedly connected to the inner wall of the roller. A mounting plate is fixedly connected to the top of the fixed shaft. A cam is drivenly connected to the inner wall of the roller, and both ends of the cam have cross grooves. By opening the inspection door and rotating the fixed rod, the arc-shaped plate is rotated above the limiting groove. At this point, the fixed rod needs to be limited. Pulling the fixed rod outward moves the mounting seat, causing the second cross block to disengage from the cross groove. This releases the limiting fixation of the cam, and pulling the cam to one side disengages it from the first cross block, thus completing the cam disassembly. This facilitates quick cam removal and replacement, improving maintenance efficiency.

Description

Technical Field

[0001] This utility model relates to the field of cam roller technology, and in particular to a cam roller type backlash-free speed change mechanism. Background Technology

[0002] The cam-roller backlash-free transmission mechanism is a backlash-free mechanical transmission structure. During operation, the motor provides power, and the motor output shaft drives the active camshaft to rotate. The cam, with its non-circular profile, pushes the roller assembly that is in close contact with it to move. The roller assembly then transmits the power to the driven component. By designing different cam profile curves, the driven component can obtain an output speed different from the motor input speed. At the same time, because the cam and roller are in surface contact and equipped with a preload device, no backlash is generated during transmission, which can achieve smooth and precise speed change.

[0003] In the cam-roller type backlash-free transmission mechanism, the cam is the core transmission component. Currently, the cam is connected to the transmission shaft by bolts. When the cam is damaged and needs to be replaced, it is inconvenient to disassemble it quickly because it is fixed by bolts, which affects the maintenance efficiency. Therefore, we propose a cam-roller type backlash-free transmission mechanism. Summary of the Invention

[0004] To solve the above-mentioned technical problems, this utility model provides a cam roller type backlash-free transmission mechanism.

[0005] This utility model is achieved using the following technical solution: a cam roller type backlash-free transmission mechanism, including a mounting box, an inspection door is bolted to the left end of the mounting box, a roller is arranged inside the mounting box, a fixed shaft is fixedly connected to the inner wall of the roller, a mounting plate is fixedly connected to the top of the fixed shaft, a cam is drivenly connected to the inner wall of the roller, a cross groove is opened at both ends of the cam, a first cross block and a second cross block are respectively inserted into the two cross grooves, an output shaft is fixedly connected to one end of the first cross block, and a limit component is provided at the front end of the second cross block; The limiting component includes a fixed rod, one end of which is rotatably connected to a mounting base. An arc-shaped plate is fixedly connected to the surface of the fixed rod, and a limiting block is slidably connected to the surface of the fixed rod. A limiting groove is formed on the inner wall of the limiting block.

[0006] With the above technical solution, when disassembling the cam, by opening the inspection door and rotating the fixing rod, the arc plate is rotated to the top of the limiting groove. At this time, the fixing rod needs to be limited. Pulling the fixing rod outward will move the mounting base, causing the second cross block to disengage from the cross groove. The limiting fixation of the cam is then removed, and the cam is pulled to one side to disengage it from the first cross block, thus completing the cam disassembly. This facilitates the subsequent quick disassembly and replacement of the cam, improves maintenance efficiency, and also facilitates rapid subsequent installation.

[0007] As a further improvement to the above solution, the surface of the fixing rod is slidably connected to the inner wall of the mounting box.

[0008] Through the above technical solution, the mounting box and the limiting block limit the fixed rod, preventing the fixed rod from tilting or shaking during the pulling or pushing process, and ensuring that the second cross block can be accurately aligned with the cross groove of the cam.

[0009] As a further improvement to the above solution, one end of the mounting base is fixedly connected to the surface of the second cross block.

[0010] With the above technical solution, since the mounting base and the fixed rod are rotatably connected, the fixed rod will not rotate during the rotation of the cam.

[0011] As a further improvement to the above solution, the arc-shaped plate is located inside the limiting groove, and the rear end of the limiting block is fixedly connected to the front end of the mounting box.

[0012] The above technical solution limits the arc plate by using the limiting groove, which limits the axial movement of the limiting rod, preventing the second cross block from disengaging from the cross groove during the transmission process, thus ensuring reliability during use.

[0013] As a further improvement to the above solution, the dimensions of the arc-shaped plate are adapted to the dimensions of the limiting groove.

[0014] The above technical solution allows the curved plate and the limiting groove to be matched, reducing the shaking caused by the gap between the two.

[0015] As a further improvement to the above solution, the two ends of the fixed shaft are rotatably connected to the inner wall of the mounting box.

[0016] Through the above technical solution, the mounting box positions the fixed shaft at both ends, ensuring the coaxiality of the fixed shaft when driving the roller to rotate, and ensuring the smoothness of the transmission.

[0017] As a further improvement to the above solution, the surface of the output shaft is rotatably connected to the inner wall of the mounting box.

[0018] The above technical solution allows the output shaft to be connected to the output end of the motor to achieve transmission.

[0019] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model, by setting a first cross block, a second cross block, and a limiting component, specifically, when disassembling the cam, by opening the inspection door and rotating the fixing rod, the arc plate is rotated above the limiting groove. At this time, the fixing rod needs to be limited. Pulling the fixing rod outward causes the mounting base to move, causing the second cross block to disengage from the cross groove, thus removing the limiting fixation of the cam. The cam is then pulled to one side to disengage from the first cross block, completing the cam disassembly. This facilitates the subsequent quick disassembly and replacement of the cam, improving maintenance efficiency.

[0020] This utility model, by setting a first cross block, a second cross block, and a limiting component, specifically, when installing the cam, inserts one end of the cam into the first cross block for positioning, then pushes the fixing rod to move into the interior of the mounting box, causing the mounting base and the second cross block to move, so that the second cross block enters the interior of the cross groove for limiting and fixing. Then, the fixing rod is rotated to rotate the arc plate into the interior of the limiting groove to limit the fixing rod and prevent the fixing rod from sliding axially, thus achieving rapid installation and simple and quick operation. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic cross-sectional view of the present invention. Figure 3 This is a schematic cross-sectional view of the present invention. Figure 4 This is a schematic diagram of the exploded structure of this utility model; Figure 5 This is a schematic diagram of the limiting component structure of this utility model; Figure 6 This is a side view of the structure of this utility model.

[0022] Explanation of key symbols: 1. Mounting box; 2. Inspection door; 3. Roller; 4. Fixed shaft; 5. Mounting plate; 6. Cam; 7. Cross groove; 8. Limiting assembly; 801. Fixed rod; 802. Mounting seat; 803. Arc plate; 804. Limiting block; 805. Limiting groove; 9. First cross block; 10. Output shaft; 11. Second cross block. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments. Example

[0024] Please combine Figure 1-6This embodiment of a cam roller type backlash-free transmission mechanism includes a mounting box 1. An inspection door 2 is bolted to the left end of the mounting box 1. A roller 3 is arranged inside the mounting box 1. A fixed shaft 4 is fixedly connected to the inner wall of the roller 3. A mounting plate 5 is fixedly connected to the top of the fixed shaft 4. A cam 6 is drivenly connected to the inner wall of the roller 3. A cross groove 7 is opened at both ends of the cam 6. A first cross block 9 and a second cross block 11 are respectively inserted into the two cross grooves 7. An output shaft 10 is fixedly connected to one end of the first cross block 9. A limit component 8 is provided at the front end of the second cross block 11. The limiting assembly 8 includes a fixed rod 801, one end of which is rotatably connected to a mounting base 802. An arc-shaped plate 803 is fixedly connected to the surface of the fixed rod 801, and a limiting block 804 is slidably connected to the surface of the fixed rod 801. A limiting groove 805 is formed on the inner wall of the limiting block 804. When the cam 6 needs to be disassembled and replaced, the inspection door 2 is opened, the fixed rod 801 is rotated, and the arc-shaped plate 803 is rotated above the limiting groove 805. At this time, the fixed rod 801 needs to be limited. The fixed rod 801 is pulled outward, which drives the mounting base 802 to move, so that the second cross block 11 is disengaged from the cross groove 7. The limiting and fixing of the cam 6 is canceled, and the cam 6 is pulled to one side to disengage it from the first cross block 9. The disassembly of the cam 6 can be completed, which facilitates the subsequent quick disassembly and replacement of the cam 6.

[0025] The surface of the fixing rod 801 is slidably connected to the inner wall of the mounting box 1. Because the fixing rod 801 is slidably connected to the inner wall of the mounting box 1 and the limiting block 804, the phenomenon of displacement during movement is avoided.

[0026] One end of the mounting base 802 is fixedly connected to the surface of the second cross block 11.

[0027] The arc-shaped plate 803 is located inside the limiting groove 805. The rear end of the limiting block 804 is fixedly connected to the front end of the mounting box 1. When installing the cam 6, one end of the cam 6 is inserted and positioned with the first cross block 9. Then, the fixing rod 801 is pushed to move into the mounting box 1, which drives the mounting base 802 and the second cross block 11 to move, so that the second cross block 11 enters the interior of the cross groove 7 and is limited and fixed. Then, the fixing rod 801 is rotated to rotate the arc-shaped plate 803 into the limiting groove 805 to limit the fixing rod 801 and prevent the fixing rod 801 from sliding axially, thus achieving quick installation and simple and fast operation.

[0028] The dimensions of the arc plate 803 are compatible with the dimensions of the limiting groove 805.

[0029] The two ends of the fixed shaft 4 are rotatably connected to the inner wall of the mounting box 1.

[0030] The surface of the output shaft 10 is rotatably connected to the inner wall of the mounting box 1. The motor is connected to the output shaft 10, and the motor drives the output shaft 10 to rotate, which in turn drives the cam 6 to rotate. During the rotation of the cam 6, the roller 3 rotates, and during the rotation of the roller 3, the fixed shaft 4 and the mounting plate 5 rotate, thus realizing the transmission.

[0031] The implementation principle of a cam-roller type backlash-free transmission mechanism in this application embodiment is as follows: During use, the motor is connected to the output shaft 10. The motor drives the output shaft 10 to rotate, which in turn drives the cam 6 to rotate. During the rotation of the cam 6, the roller 3 rotates, which in turn drives the fixed shaft 4 and the mounting plate 5 to rotate, thus achieving transmission. When the cam 6 needs to be disassembled and replaced, the inspection door 2 is opened, and the fixed rod 801 is rotated, moving the arc plate 803 above the limiting groove 805. At this time, the fixed rod 801 needs to be limited. Pulling the fixed rod 801 outwards moves the mounting base 802, causing the second cross block 11 to disengage from the cross groove 7, thus eliminating the need for cam replacement. The limiting and fixing of cam 6 allows cam 6 to be pulled to one side to disengage it from the first cross block 9, thus completing the disassembly of cam 6. This facilitates quick disassembly and replacement of cam 6, improving maintenance efficiency. When installing cam 6, one end of cam 6 is inserted and positioned into the first cross block 9. Then, the fixing rod 801 is pushed into the interior of the mounting box 1, causing the mounting base 802 and the second cross block 11 to move. This allows the second cross block 11 to enter the interior of the cross groove 7 for limiting and fixing. Then, the fixing rod 801 is rotated to rotate the arc plate 803 into the interior of the limiting groove 805, limiting the fixing rod 801 and preventing axial sliding of the fixing rod 801. This achieves quick installation and is simple and fast to operate.

[0032] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A cam-roller type backlash-free transmission mechanism, characterized in that, The device includes a mounting box (1), with an inspection door (2) bolted to the left end of the mounting box (1). The mounting box (1) contains a roller (3), and a fixed shaft (4) is fixedly connected to the inner wall of the roller (3). A mounting plate (5) is fixedly connected to the top of the fixed shaft (4). A cam (6) is driven to the inner wall of the roller (3). Both ends of the cam (6) are provided with cross grooves (7). A first cross block (9) and a second cross block (11) are respectively inserted into the two cross grooves (7). An output shaft (10) is fixedly connected to one end of the first cross block (9), and a limit component (8) is provided at the front end of the second cross block (11). The limiting component (8) includes a fixed rod (801), one end of which is rotatably connected to a mounting base (802), an arc plate (803) is fixedly connected to the surface of the fixed rod (801), a limiting block (804) is slidably connected to the surface of the fixed rod (801), and a limiting groove (805) is formed on the inner wall of the limiting block (804).

2. The cam-roller type backlash-free transmission mechanism as described in claim 1, characterized in that: The surface of the fixing rod (801) is slidably connected to the inner wall of the mounting box (1).

3. The cam-roller type backlash-free transmission mechanism as described in claim 1, characterized in that: One end of the mounting base (802) is fixedly connected to the surface of the second cross block (11).

4. The cam-roller type backlash-free transmission mechanism as described in claim 1, characterized in that: The arc plate (803) is located inside the limiting groove (805), and the rear end of the limiting block (804) is fixedly connected to the front end of the mounting box (1).

5. A cam-roller type backlash-free transmission mechanism as described in claim 4, characterized in that: The dimensions of the arc plate (803) are adapted to the dimensions of the limiting groove (805).

6. The cam-roller type backlash-free transmission mechanism as described in claim 1, characterized in that: The two ends of the fixed shaft (4) are rotatably connected to the inner wall of the mounting box (1).

7. The cam-roller type backlash-free transmission mechanism as described in claim 1, characterized in that: The surface of the output shaft (10) is rotatably connected to the inner wall of the mounting box (1).

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