Synchronous pulley capable of preventing position deviation of belt

Abstract

The utility model discloses a synchronous pulley capable of preventing belt position deviation, which belongs to the field of belt pulleys and comprises a fixed pulley, a sliding groove is arranged on the outer wall of the fixed pulley, a two-way screw rod is rotatably connected inside the sliding groove, a movable block is in threaded connection with the outer wall of the two-way screw rod, and the movable block is in threaded connection with the fixed pulley. According to the scheme, when the two-way screw rotates, due to the fact that the outer wall of the two-way screw is in threaded connection with the moving block and the moving block is slidably connected into the sliding groove, the moving block is in threaded connection with the sliding groove, the moving block is in threaded connection with the sliding groove, and the limiting plate is fixedly connected with the outer wall of the fixed wheel. And moving blocks on the two sides of the two-way screw can slide in sliding grooves, so that the purpose of adjusting the distance between two limiting plates is achieved, the two limiting plates are close to the two sides of the transmission belt, and the transmission belt is prevented from deviating on the outer wall of the fixed wheel.

Description

Technical Field

[0001] The utility model relates to the field of pulleys, and more specifically to a synchronous pulley for preventing belt position deviation. Background Art

[0002] Pulley is a common transmission device.

[0003] China Patent Authorization Announcement No.: CN220320257U provides a shock-absorbing pulley, which includes a main body, a transmission wheel and a limiting wheel. A transmission groove A is provided on one side of the main body, a transmission groove B is provided in the middle of the main body, a transmission wheel is installed in the middle of the transmission groove A and the transmission groove B, a transmission groove C is provided on the side of the main body away from the transmission groove A, a limiting wheel is installed in the transmission groove C, the transmission wheel and the limiting wheel are connected by bolts, a transmission boss B is installed on the inner surface of the transmission groove B, and a transmission boss A is installed on the outer surface of the transmission wheel at the position of the transmission groove B. A shock-absorbing pulley solves the problem that the existing pulley mainly absorbs the vibration of the pulley through the action of rubber blocks and rubber rings, the rubber blocks and rubber rings have limited buffering effect on the driving force, and the rubber blocks and rubber rings are easily damaged when the large torque is output for a long time, thereby reducing the probability of damage to the pulley and thus increasing the service life of the pulley.

[0004] However, in the above patent, when the pulley is working, the belt will rotate rapidly on the outer wall of the main wheel and the transmission wheel. When the belt and the pulley rotate, the position of the belt will move for a long time, thereby reducing the stability of the belt and making it possible for the belt to fall off, which is inconvenient and has limitations in use. Utility Model Content

[0005] 1. Technical issues to be solved

[0006] In view of the problems existing in the prior art, the utility model aims to provide a synchronous pulley for preventing the position deviation of the belt, which can realize the function of preventing the belt from deviating.

[0007] 2. Technical solution

[0008] To solve the above problems, the utility model adopts the following technical solutions.

[0009] A synchronous pulley for preventing belt position deviation comprises a fixed wheel, an outer wall of the fixed wheel is provided with a sliding groove, a bidirectional screw is rotatably connected inside the sliding groove, a moving block is threadedly connected to the outer wall of the bidirectional screw, the moving block is slidably connected to the sliding groove, one end of the moving block away from the bidirectional screw is fixedly connected to a limiting plate, and the limiting plate is slidably connected to the outer wall of the fixed wheel.

[0010] Furthermore, a rotation groove is provided on one side of the fixed wheel, a rotation block is rotatably connected inside the rotation groove, and one end of the rotation block is fixedly connected to a gear ring.

[0011] Furthermore, one end of the bidirectional screw is fixedly connected to a gear, the gear is meshed with a gear ring, and a side of the gear ring away from the fixed wheel is fixedly connected to a circular ring.

[0012] Furthermore, a mounting block is fixedly connected to one side of the fixed wheel, a screw rod is connected to the internal thread of the mounting block, and one end of the screw rod away from the mounting block is rotatably connected to the fixed block.

[0013] Furthermore, a side of the fixing block away from the mounting block is clamped with the outside of the gear ring.

[0014] Furthermore, the outer wall of the fixed wheel is transmission-connected with a transmission belt, and the transmission belt is located between two limit plates.

[0015] Furthermore, the threads of every two bidirectional screws are arranged in opposite directions.

[0016] Furthermore, the fixing block and the mounting block are slidably connected.

[0017] 3. Beneficial effects

[0018] Compared with the prior art, the advantages of the present invention are:

[0019] (1) In this scheme, when the bidirectional screw rotates, because the outer wall of the bidirectional screw is threadedly connected to the moving block and the moving block is slidably connected inside the sliding groove, when the bidirectional screw rotates, the moving blocks on both sides of the bidirectional screw will slide inside the sliding groove, thereby achieving the purpose of adjusting the distance between the two limit plates, so that the two limit plates are close to both sides of the transmission belt, preventing the transmission belt from deviating on the outer wall of the fixed wheel.

[0020] (2) In this solution, the user can rotate the screw rod. When the screw rod rotates, the relative position of the screw rod and the mounting block will change, thereby driving the fixed block to slide inside the mounting block, thereby achieving the purpose of moving the position of the fixed block to prevent the gear ring from rotating due to external force, causing the distance between the two limit plates to change.

[0021] (3) In this scheme, the design of driving the two-way screw to rotate by the gear ring allows the staff to turn the ring to drive the four two-way screws to rotate at the same time, so that the staff does not need to rotate the four two-way screws at one time, which improves the convenience of using the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0023] Figure 2 It is a schematic diagram of the positional relationship between the sliding groove and the fixed wheel in the utility model;

[0024] Figure 3 It is a schematic diagram of the connection relationship between the gear ring, the circular ring and the rotating block in the utility model;

[0025] Figure 4 For the utility model Figure 1 Schematic diagram of the structure at A in the middle;

[0026] Figure 5 It is a schematic diagram of the positional relationship between the bidirectional screw and the fixed wheel in the utility model.

[0027] Description of the numbers in the figure:

[0028] 1. Fixed wheel; 11. Bidirectional screw; 12. Gear; 13. Limiting plate; 14. Moving block; 15. Gear ring; 16. Circular ring; 17. Fixed block; 18. Screw; 19. Mounting block; 2. Rotating block; 21. Rotating groove; 22. Sliding groove; 23. Transmission belt. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model; it is obvious that the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the utility model without making creative work are within the scope of protection of the utility model.

[0030] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0031] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "set / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0032] Embodiment 1:

[0033] See also Figure 1-5 The outer wall of the bidirectional screw 11 is threadedly connected with a moving block 14, and the moving block 14 is slidably connected to the sliding groove 22. The end of the moving block 14 away from the bidirectional screw 11 is fixedly connected to a limiting plate 13, and the limiting plate 13 is slidably connected to the outer wall of the fixed wheel 1. In this scheme, when the bidirectional screw 11 rotates, because the outer wall of the bidirectional screw 11 and the moving block 14 are threadedly connected and the moving block 14 is slidably connected to the inside of the sliding groove 22, when the bidirectional screw 11 rotates, the moving blocks 14 on both sides of the bidirectional screw 11 will slide inside the sliding groove 22, thereby achieving the purpose of adjusting the distance between the two limiting plates 13, so that the two limiting plates 13 are close to the two sides of the transmission belt 23, preventing the transmission belt 23 from deviating on the outer wall of the fixed wheel 1.

[0034] See also Figure 1-5 A rotating groove 21 is provided on one side of the fixed wheel 1 , and a rotating block 2 is rotatably connected inside the rotating groove 21 . A gear ring 15 is fixedly connected to one end of the rotating block 2 . In this solution, the rotating block 2 is rotatably connected inside the rotating groove 21 .

[0035] See also Figure 1-5 One end of the bidirectional screw 11 is fixedly connected to a gear 12, the gear 12 is meshed with a gear ring 15, and a circular ring 16 is fixedly connected to the side of the gear ring 15 away from the fixed wheel 1. In this solution, the user can turn the circular ring 16 to drive the gear ring 15 to rotate. Because the outside of the gear ring 15 is meshed with the gear 12, when the gear ring 15 rotates, it will drive the four gears 12, that is, the four bidirectional screws 11 to rotate. Among the four bidirectional screws 11, the threads of every two bidirectional screws 11 are in opposite directions.

[0036] See also Figure 1-5 A mounting block 19 is fixedly connected to one side of the fixed wheel 1, and a screw rod 18 is connected to the internal thread of the mounting block 19. The end of the screw rod 18 away from the mounting block 19 is rotatably connected to the fixed block 17. In this solution, when the screw rod 18 rotates, the relative position of the screw rod 18 and the mounting block 19 will change, thereby driving the fixed block 17 to slide inside the mounting block 19, thereby achieving the purpose of moving the position of the fixed block 17.

[0037] See also Figure 1-5 The fixing block 17 is engaged with the outside of the gear ring 15 at one side away from the mounting block 19 . In this solution, the gear ring 15 is prevented from rotating by the engagement between the gear ring 15 and the fixing block 17 .

[0038] See also Figure 1-5 The outer wall of the fixed wheel 1 is connected to a transmission belt 23, and the transmission belt 23 is located between the two limit plates 13. In this solution, the transmission belt 23 can drive the other fixed wheel 1 to rotate when one fixed wheel 1 rotates.

[0039] See also Figure 1-5 The threads of each two bidirectional screws 11 are arranged in opposite directions.

[0040] See also Figure 1-5 , the fixing block 17 and the mounting block 19 are slidably connected.

[0041] Working principle: After the user puts the transmission belt 23 on the outer wall of the two fixed wheels 1, the ring 16 can be rotated to drive the gear ring 15 to rotate. Because the outer part of the gear ring 15 is meshed with the gear 12, when the gear ring 15 rotates, it will drive the four gears 12, that is, the four bidirectional screws 11 to rotate. Among the four bidirectional screws 11, the threads of each two bidirectional screws 11 are in opposite directions. Therefore, when the bidirectional screw 11 rotates, because the outer wall of the bidirectional screw 11 is threadedly connected with the moving block 14 and the moving block 14 is slidably connected to the inside of the sliding groove 22, when the bidirectional screw 11 rotates, the moving blocks 14 on both sides of the bidirectional screw 11 will be in the sliding groove. 22 slides inside, thereby achieving the purpose of adjusting the distance between the two limit plates 13, so that the two limit plates 13 are close to the two sides of the transmission belt 23, preventing the transmission belt 23 from deviating from the outer wall of the fixed wheel 1. After the position of the limit plates 13 is adjusted, the user can rotate the screw rod 18. When the screw rod 18 rotates, the relative position of the screw rod 18 and the mounting block 19 will change, thereby driving the fixing block 17 to slide inside the mounting block 19, thereby achieving the purpose of moving the position of the fixing block 17, so as to prevent the gear ring 15 from being affected by external force and causing the distance between the two limit plates 13 to change.

[0042] The above is only a preferred specific implementation of the utility model; however, the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and improved ideas of the utility model within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model.

Claims

1. A synchronous pulley for preventing a belt from shifting, comprising a fixed pulley (1), characterized in that: The outer wall of the fixed wheel (1) is provided with a sliding groove (22), the interior of the sliding groove (22) is rotatably connected to a bidirectional screw rod (11), the outer wall of the bidirectional screw rod (11) is threadedly connected to a moving block (14), the moving block (14) and the sliding groove (22) are slidably connected, one end of the moving block (14) away from the bidirectional screw rod (11) is fixedly connected to a limiting plate (13), and the limiting plate (13) and the outer wall of the fixed wheel (1) are slidably connected.

2. A synchronous pulley for preventing belt position deviation according to claim 1, characterized in that: A rotating groove (21) is provided on one side of the fixed wheel (1), a rotating block (2) is rotatably connected inside the rotating groove (21), and a gear ring (15) is fixedly connected to one end of the rotating block (2).

3. A synchronous pulley for preventing belt position deviation according to claim 2, characterized in that: One end of the bidirectional screw (11) is fixedly connected to a gear (12), the gear (12) is meshed with a gear ring (15), and a circular ring (16) is fixedly connected to the side of the gear ring (15) away from the fixed wheel (1).

4. A synchronous pulley for preventing belt position deviation according to claim 1, characterized in that: A mounting block (19) is fixedly connected to one side of the fixed wheel (1), a screw rod (18) is internally threadedly connected to the mounting block (19), and an end of the screw rod (18) away from the mounting block (19) is rotatably connected to the fixed block (17).

5. A synchronous pulley for preventing belt position deviation according to claim 4, characterized in that: The side of the fixing block (17) away from the mounting block (19) is clamped with the outside of the gear ring (15).

6. A synchronous pulley for preventing belt position deviation according to claim 1, characterized in that: The outer wall of the fixed wheel (1) is transmission-connected with a transmission belt (23), and the transmission belt (23) is located between the two limiting plates (13).

7. A synchronous pulley for preventing belt position deviation according to claim 1, characterized in that: The threads of each two bidirectional screws (11) are arranged in opposite directions.

8. A synchronous pulley for preventing belt position deviation according to claim 5, characterized in that: The fixing block (17) and the mounting block (19) are slidably connected.

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