Press fitting type belt pulley assembly

Abstract

The utility model provides a press-fitting type belt pulley assembly. The press-fitting type belt pulley assembly comprises a belt pulley and a disassembling and assembling mechanism. A damping ring is fixedly connected to the inner side of the belt wheel, an aluminum alloy inner ring is fixedly connected to the inner side of the damping ring, a through hole and a plurality of through grooves are formed in the aluminum alloy inner ring, and the through grooves are distributed in the outer side of the through hole at equal intervals. The dismounting and mounting mechanism comprises a fixing seat fixedly connected to the output shaft of the motor and a support fixedly connected to one side of the aluminum alloy inner ring, and one side of the fixing seat is fixedly connected with a supporting block. The dismounting mechanism is arranged on the belt pulley and the output shaft of the motor, so that the threaded rod can drive the extrusion block to extrude the movable arms at the same time after being tightened, and the movable arms can be tightly attached to the through groove of the aluminum alloy inner ring under the extrusion effect; and in addition, the belt pulley assembly can be conveniently and quickly disassembled in a manner of unscrewing the threaded rod, so that the belt pulley assembly is more convenient to replace.

Description

Technical Field

[0001] The utility model relates to a pulley assembly, in particular to a press-fit pulley assembly, and belongs to the technical field of pulleys. Background Art

[0002] As is known to all, the pulley assembly is mainly used in the occasion of long-distance power transmission, such as the output of small diesel engine power, agricultural vehicles, tractors, automobiles, mining machinery, mechanical processing equipment, textile machinery, packaging machinery, lathes, forging machines and the transmission of some small horsepower motorcycle power; as the prior art of the pulley assembly, China Publication Patent (Publication No.: CN213176700U) discloses a shock-absorbing pulley assembly, including a pulley body, the inner ring of the pulley body is embedded with an aluminum alloy inner ring, the lower right end of the inner ring of the aluminum alloy inner ring is provided with a card slot, the pulley body includes a base layer, the outer surface of the base layer is bonded with a first shock-absorbing layer through natural rubber, the first shock-absorbing layer includes a rubber layer and a carbon fiber layer, and the outer surface of the first shock-absorbing layer is bonded with a second shock-absorbing layer through natural rubber. The utility model has a first shock-absorbing layer bonded to the outer surface of the base layer by natural rubber, and the rubber layer and the carbon fiber layer included in the first shock-absorbing layer both have very good shock-absorbing performance. A second shock-absorbing layer is bonded to the outer surface of the first shock-absorbing layer by natural rubber, and the silicone layer and the glass wool layer included in the second shock-absorbing layer both have very good shock-absorbing performance, thereby achieving the purpose of good shock-absorbing effect and solving the problem that the existing shock-absorbing pulley assembly has poor shock-absorbing effect and cannot meet people's use needs.

[0003] However, the pulley assembly in the prior art is mainly fixed by a pin during installation. This method not only requires manual labor to knock the pin to complete the installation, but is also not conducive to more convenient disassembly of the pulley assembly, resulting in the work efficiency of the pulley assembly during replacement still needs to be improved; in addition, the existing single pin installation method also makes the torque bearing capacity of the pulley assembly insufficient; for this reason, a press-fit pulley assembly is proposed. Utility Model Content

[0004] In view of this, the utility model provides a press-fit pulley assembly to solve or alleviate the technical problems existing in the prior art and at least provide a beneficial choice.

[0005] The technical solution of the utility model is implemented as follows: a press-fit pulley assembly comprises a pulley and a disassembly mechanism;

[0006] A damping ring is fixedly connected to the inner side of the pulley, and an aluminum alloy inner ring is fixedly connected to the inner side of the damping ring. A through hole and a plurality of through grooves are respectively opened inside the aluminum alloy inner ring, and the plurality of through grooves are equidistantly distributed on the outer side of the through hole;

[0007] The disassembly and assembly mechanism includes a fixing seat fixedly connected to the motor output shaft and a bracket fixedly connected to one side of the aluminum alloy inner ring, one side of the fixing seat is fixedly connected to a support block, the outer side of the support block is evenly fixedly connected to a spring, one end of the spring is fixedly connected to a movable arm for inserting into the through groove, the movable arm is movably connected to one side of the fixing seat, the internal thread of the bracket is connected to a threaded rod, one end of the threaded rod is fixedly connected to an extrusion block for inserting into the through hole.

[0008] Further preferably, the shock absorbing ring is a rubber ring.

[0009] Further preferably, an annular groove is provided on the outer side of the pulley.

[0010] Further preferably, one side of the fixing seat is evenly provided with equidistantly distributed sliding grooves, and one side of the movable arm is slidably connected to the inner wall of the sliding groove via a sliding block.

[0011] Further preferably, a positioning groove is formed on the inner side wall of the through groove, and a positioning block for inserting into the positioning groove is fixedly connected to the outer side of the movable arm.

[0012] Further preferably, the contact surfaces between the movable arm and the extrusion block are both arc-shaped structures.

[0013] Further preferably, a protrusion is welded on one end of the threaded rod, and a slot is formed on one side of the protrusion.

[0014] The embodiment of the utility model has the following advantages due to the adoption of the above technical solution:

[0015] 1. The utility model provides a disassembly and assembly mechanism on the pulley and the motor output shaft, so that after the threaded rod is tightened, it can drive the extrusion block to extrude multiple movable arms at the same time, so that the movable arms can be tightly attached to the through grooves of the aluminum alloy inner ring under the extrusion action, and the pulley assembly can be quickly disassembled by loosening the threaded rod, thereby making it more convenient to replace the pulley assembly.

[0016] 2. The utility model respectively arranges through holes and through grooves in the aluminum alloy inner ring, so that a plurality of movable arms can be respectively pressed in a plurality of corresponding through grooves under the action of the extrusion block, thereby improving the stability and torque bearing capacity of the pulley assembly after installation.

[0017] The above summary is for the purpose of description only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the utility model will be readily apparent by reference to the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is a structural diagram of the utility model;

[0020] Figure 2 It is a structural diagram of the disassembly and assembly mechanism in the utility model;

[0021] Figure 3 It is a structural diagram of the through hole and the through groove in the utility model.

[0022] Figure numerals: 1. motor output shaft; 2. pulley; 20. shock absorber ring; 21. aluminum alloy inner ring; 22. through hole; 23. through groove; 24. annular groove; 3. disassembly and assembly mechanism; 30. fixed seat; 31. support block; 32. movable arm; 33. spring; 34. bracket; 35. threaded rod; 36. extrusion block; 37. slide groove; 38. positioning block; 39. positioning groove; 301. protrusion; 302. slot. DETAILED DESCRIPTION

[0023] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0024] The embodiments of the present utility model are described in detail below with reference to the accompanying drawings.

[0025] like Figure 1-3 As shown, an embodiment of the utility model provides a press-fit pulley 2 assembly, including a pulley 2 and a disassembly mechanism 3.

[0026] In one embodiment, in order that the aluminum alloy inner ring 21 can effectively support the pulley 2 and the shock-absorbing ring 20 can effectively reduce the vibration amplitude generated when the pulley 2 is running, the shock-absorbing ring 20 is fixedly connected to the inner side of the pulley 2, and the inner side of the shock-absorbing ring 20 is fixedly connected to the aluminum alloy inner ring 21, and the interior of the aluminum alloy inner ring 21 is respectively provided with a through hole 22 and a plurality of through grooves 23, and the plurality of through grooves 23 are equidistantly distributed on the outer side of the through hole 22; in order to enable the shock-absorbing ring 20 to have a good shock-absorbing effect, the shock-absorbing ring 20 is a rubber ring.

[0027] In one embodiment, in order to install the pulley 2, the aluminum alloy inner ring 21 can be sleeved on the outside of the movable arm 32 first, so that the three movable arms 32 can be respectively located in the corresponding through grooves 23, and then the extrusion block 36 can be driven to extrude the three movable arms 32 at the same time by tightening the threaded rod 35, so that the three movable arms 32 can be tightly attached to the inner wall of the through groove 23 under the action of the extrusion block 36, so that the aluminum alloy inner ring 21 can be pressed, so that the pulley 2 can be installed, and when the pulley 2 needs to be disassembled, the extrusion block 36 can be driven to move out of the through hole 22 by loosening the threaded rod 35, so that the three movable arms 32 can release the pressure on the inner wall of the through groove 23 under the reset action of the spring 33, so that the pulley 2 can be quickly removed; the disassembly and assembly mechanism 3 includes a fixed seat 30 fixedly connected to the motor output shaft 1 and a bracket 34 fixedly connected to one side of the aluminum alloy inner ring 21, one side of the fixed seat 30 is fixedly connected to a support block 31, the outer side of the support block 31 is evenly fixedly connected to a spring 33, one end of the spring 33 is fixedly connected to a movable arm 32 for inserting into the through groove 23, the movable arm 32 is movably connected to one side of the fixed seat 30, the internal thread of the bracket 34 is connected to a threaded rod 35, and one end of the threaded rod 35 is fixedly connected to an extrusion block 36 for inserting into the through hole 22.

[0028] In one embodiment, in order to facilitate the installation of the belt on the pulley 2 , an annular groove 24 is provided on the outer side of the pulley 2 .

[0029] In one embodiment, in order to improve the stability of the movable arm 32 when moving, one side of the fixed seat 30 is evenly provided with equidistantly distributed sliding grooves 37, and one side of the movable arm 32 is slidably connected to the inner wall of the sliding groove 37 through a slider.

[0030] In one embodiment, in order to enable the movable arm 32 to drive the positioning block 38 to be inserted into the positioning groove 39 when being pressed against the inner wall of the through groove 23, thereby further improving the stability of the pulley 2 after installation, a positioning groove 39 is opened on the inner wall of the through groove 23, and a positioning block 38 for inserting into the positioning groove 39 is fixedly connected to the outer side of the movable arm 32.

[0031] In one embodiment, in order to facilitate the extrusion block 36 to extrude the movable arm 32 , the contact surfaces between the movable arm 32 and the extrusion block 36 are both arc-shaped structures.

[0032] In one embodiment, in order to enable the threaded rod 35 to be twisted by a wrench, a protrusion 301 is welded to one end of the threaded rod 35 , and a slot 302 is formed on one side of the protrusion 301 .

[0033] During operation of the utility model: when the pulley 2 needs to be installed, the aluminum alloy inner ring 21 can be sleeved on the outside of the movable arm 32 first, so that the three movable arms 32 can be respectively located in the corresponding through grooves 23, and then the extrusion block 36 can be driven to extrude the three movable arms 32 at the same time by tightening the threaded rod 35, so that the three movable arms 32 can be tightly attached to the inner side wall of the through groove 23 under the action of the extrusion block 36, and then the aluminum alloy inner ring 21 can be pressed, so that the pulley 2 can be installed, and when the pulley 2 needs to be disassembled, the extrusion block 36 can be driven to move out of the through hole 22 by loosening the threaded rod 35, so that the three movable arms 32 can release the tightness against the inner wall of the through groove 23 under the resetting action of the spring 33, and then the pulley 2 can be quickly disassembled.

[0034] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of various changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A press-fit pulley assembly, characterized in that: It comprises a pulley (2) and a disassembly and assembly mechanism (3); A damping ring (20) is fixedly connected to the inner side of the pulley (2), an aluminum alloy inner ring (21) is fixedly connected to the inner side of the damping ring (20), a through hole (22) and a plurality of through grooves (23) are respectively provided inside the aluminum alloy inner ring (21), and the plurality of through grooves (23) are equidistantly distributed on the outer side of the through hole (22); The disassembly and assembly mechanism (3) comprises a fixing seat (30) fixedly connected to the motor output shaft (1) and a bracket (34) fixedly connected to one side of the aluminum alloy inner ring (21); a support block (31) is fixedly connected to one side of the fixing seat (30); a spring (33) is evenly fixedly connected to the outer side of the support block (31); one end of the spring (33) is fixedly connected to a movable arm (32) for inserting into the through groove (23); the movable arm (32) is movably connected to one side of the fixing seat (30); a threaded rod (35) is internally threadedly connected to the bracket (34); one end of the threaded rod (35) is fixedly connected to an extrusion block (36) for inserting into the through hole (22).

2. A press-fit pulley assembly according to claim 1, characterized in that: The shock absorbing ring (20) is a rubber ring.

3. A press-fit pulley assembly according to claim 1, characterized in that: An annular groove (24) is provided on the outer side of the belt pulley (2).

4. A press-fit pulley assembly according to claim 1, characterized in that: One side of the fixed seat (30) is evenly provided with sliding grooves (37) distributed at equal intervals, and one side of the movable arm (32) is slidably connected to the inner side wall of the sliding groove (37) via a sliding block.

5. The press-fit pulley assembly according to claim 1, characterized in that: The inner side wall of the through slot (23) is provided with a positioning slot (39), and the outer side of the movable arm (32) is fixedly connected with a positioning block (38) for inserting into the positioning slot (39).

6. A press-fit pulley assembly according to claim 5, characterized in that: The contact surfaces of the movable arm (32) and the extrusion block (36) are both arc-shaped structures.

7. The press-fit pulley assembly according to claim 1, characterized in that: A convex block (301) is welded to one end of the threaded rod (35), and a slot (302) is provided on one side of the convex block (301).

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