Anti-loose fixing device for belt pulley

Abstract

The utility model relates to the technical field of belt pulley auxiliary devices, and provides a belt pulley anti-loose fixing device which comprises a belt pulley body, a positioning gear and a fixed rotating shaft, the inner side of the belt pulley body is meshed and rotationally connected with the positioning gear, and the side, away from the belt pulley body, of the outer side of the positioning gear is meshed and rotationally connected with a rotating gear. A positioning gear is arranged in the middle of the fixed rotating shaft, a connecting shaft is fixedly inserted in the middle of the side wall of the positioning gear, and a positioning disc is fixedly connected to the end, away from the positioning gear, of the connecting shaft, the positioning gear rotates, so that the connecting shaft drives the positioning disc to rotate, and then the fixed rotating shaft can be driven to rotate through the positioning connecting belt; and the positioning pin is arranged on the fixed rotating shaft, the overall stability of the belt pulley is improved, meanwhile, the situation that the gear is separated from the gear groove body in the high-speed rotating process can be prevented through the clamping piece located on the side edge of the positioning gear, and the overall use safety and stability of the belt pulley are enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of pulley auxiliary devices, and in particular to a pulley anti-loosening fixing device. Background Art

[0002] Pulleys are disc hub parts, which are generally relatively large in size. The manufacturing process is generally based on casting and forging. Generally, the larger ones are designed by casting, and the material is generally cast iron (better casting performance), and cast steel is rarely used (steel has poor casting performance); generally, the smaller ones can be designed by forging, and the material is steel. Pulleys are mainly used in situations where power is transmitted over long distances, 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, some small horsepower motorcycle power transmission, agricultural machinery power transmission, air compressors, reducers, reducers, generators, cotton gins, etc., and the overall operation stability of the pulley needs to be processed using corresponding auxiliary structures or devices to improve stability and service life.

[0003] The existing patent (Announcement No.: CN205446345U) discloses an auxiliary device applied to a pulley, specifically a pulley anti-loosening fixing device. The pulley anti-loosening fixing device, the pulley is arranged on the transmission shaft through a conical expansion sleeve, and an anti-loosening device is arranged on the pulley, the anti-loosening device includes bolts and a pressure cover, the pressure cover is fixed to the pulley by bolts, the inner side of the pressure cover abuts against the end face of the conical expansion sleeve, a hole for the bolt to pass through is arranged in the pressure cover, and a threaded hole connected to the bolt thread is arranged on the pulley; the pulley is also provided with a positioning hole for the bolt to pass through, a set of compression springs connected to the bolt are arranged in the positioning hole, and a side hole is opened on the side wall of the positioning hole, and one end of the compression spring is clamped in the side hole. The utility model overcomes the technical defect of the prior art that the anti-loosening device itself is easy to loosen in time, and provides a pulley anti-loosening fixing device that ensures a stable connection between the expansion sleeve and the pulley by enhancing the stability of the anti-loosening device.

[0004] However, in the implementation of relevant technologies, the following problems were found: the auxiliary fixation of the device is achieved by utilizing a hole for the bolt to pass through in the pressure cover, and a threaded hole is provided on the pulley to be threadedly connected to the bolt. The stability is mainly improved by inserting the fixation method, which does not have buffering performance. At the same time, the pulley needs to rotate at high speed for a long time, which can easily cause displacement or disengagement, and a corresponding structure is required for auxiliary processing. Utility Model Content

[0005] The utility model provides a pulley anti-loosening fixing device, which solves the problem that the connection structure does not have buffering performance and cannot prevent deviation and separation.

[0006] The technical solution of the utility model is as follows:

[0007] A pulley anti-loosening fixing device comprises a pulley body, a positioning gear and a fixed rotating shaft, the inner side of the pulley body is meshed and rotatably connected with the positioning gear, the outer side of the positioning gear is meshed and rotatably connected with a rotating gear on a side away from the pulley body, a connecting shaft is fixedly inserted in the middle of the side wall of the positioning gear, the end of the connecting shaft away from the positioning gear is fixedly connected to a positioning plate, the outer side wall of the positioning plate is movably sleeved with a positioning connecting belt, and the inner side wall of the positioning connecting belt is rotatably connected to a fixed rotating shaft on a side away from the positioning plate.

[0008] Preferably, the inner side wall of the pulley body is evenly provided with inner side teeth of the wheel body along the circumferential direction, and the outer side wall of the positioning gear is meshedly connected with the inner side teeth of the wheel body.

[0009] Preferably, the outer wall of the pulley body is provided with an outer groove of the wheel body in the circumferential direction, the inner cavity of the outer groove of the wheel body is movably sleeved with a driving connecting belt, and the inner wall of the driving connecting belt is rotatably connected to a driving shaft at a side away from the pulley body.

[0010] Preferably, a gear bearing is fixedly mounted in the middle of the inner cavity of the rotating gear, and a gear shaft is inserted in the middle of the gear bearing.

[0011] Preferably, a locking piece is fixedly connected to a side of the positioning gear that is away from the connecting shaft.

[0012] Preferably, the locking piece is located on a side of the pulley body, and the locking piece is located on a side of the rotating gear.

[0013] Preferably, a positioning plate groove is formed on the outer side wall of the positioning plate along the circumferential direction, and the diameter of the positioning plate groove is consistent with the diameter of the positioning connection belt.

[0014] Preferably, the side wall of the fixed rotating shaft is fixedly provided with a positioning pin, and the end of the fixed rotating shaft is rotatably connected with a rotating shaft disk.

[0015] Preferably, the outer side wall of the rotating shaft disk is provided with a disk body groove along the circumferential direction, and the diameter of the disk body groove is consistent with the diameter of the positioning connection belt.

[0016] The working principle and beneficial effects of the utility model are:

[0017] 1. In the utility model, the rotation of the gear shaft drives the rotation of the rotating gear connected to its outer side wall, so that the positioning gear can rotate around the circumferential direction of the outer side wall of the rotating gear, and then the rotating gear meshing with the positioning gear can be rotated, realizing the function of using the driving connection belt to drive the driving shaft to rotate. The overall connection of the device is close, and the positioning gear is used for anti-deviating treatment. Compared with the direct connection between the inner gear and the outer gear, the positioning gear can also play the function of correction and anti-loosening;

[0018] 2. In the utility model, the positioning gear is rotated, thereby utilizing the connecting shaft to drive the rotation of the positioning plate, and then the fixed shaft can be driven to rotate through the positioning connecting belt, and a positioning pin is provided on the fixed shaft, so that the fixed shaft can be fixed to improve the overall stability of the pulley, and at the same time, the locking piece located on the side of the positioning gear can prevent the gear from detaching from the gear slot during high-speed rotation, thereby enhancing the overall safety and stability of the pulley. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0020] Figure 1 This is a schematic diagram of the overall three-dimensional structure proposed by the utility model;

[0021] Figure 2 This is a schematic diagram of the rear structure of the main body proposed by the utility model;

[0022] Figure 3 This is a schematic diagram of the rotating gear connection structure proposed by the utility model;

[0023] Figure 4 This is a schematic diagram of the fixed shaft structure proposed by the utility model;

[0024] In the figure: 1. pulley body; 2. inner teeth of the pulley body; 3. outer groove of the pulley body; 4. driving connecting belt; 5. driving shaft; 6. rotating gear; 7. positioning gear; 8. connecting shaft; 9. positioning plate; 10. positioning connecting belt; 11. fixed shaft; 601. gear bearing; 602. gear shaft; 701. positioning piece; 901. positioning plate groove; 101. positioning pin; 102. shaft plate; 103. plate body groove. DETAILED DESCRIPTION

[0025] The following will be combined with the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] See also Figure 1 , Figure 2 , Figure 3 and Figure 4 The utility model provides a technical solution: a pulley anti-loosening fixing device, comprising a pulley body 1, a positioning gear 7 and a fixed rotating shaft 11, the inner side of the pulley body 1 is meshed and rotatably connected with the positioning gear 7, the outer side of the positioning gear 7 is meshed and rotatably connected with a rotating gear 6 away from the pulley body 1, a connecting shaft 8 is fixedly inserted in the middle of the side wall of the positioning gear 7, the end of the connecting shaft 8 away from the positioning gear 7 is fixedly connected with a positioning disk 9, the outer side wall of the positioning disk 9 is movably sleeved with a positioning connecting belt 10, and the inner side wall of the positioning connecting belt 10 is rotatably connected with a fixed rotating shaft 11 on the side away from the positioning disk 9.

[0027] In this embodiment, the inner wall of the pulley body 1 is evenly provided with inner teeth 2 of the wheel body along the circumferential direction, the outer wall of the positioning gear 7 is meshed with the inner teeth 2 of the wheel body, and the outer wall of the pulley body 1 is provided with an outer groove 3 of the wheel body along the circumferential direction. The inner cavity of the outer groove 3 of the wheel body is movably sleeved with a driving connecting belt 4, and the inner wall of the driving connecting belt 4 is rotatably connected to the driving shaft on the side away from the pulley body 1. A gear bearing 601 is fixedly installed in the middle of the inner cavity of the rotating gear 6, and a gear shaft 602 is inserted in the middle of the gear bearing 601.

[0028] The rotation of the gear shaft 602 drives the rotating gear 6 connected to its outer wall to rotate, so that the positioning gear 7 can rotate around the circumferential direction of the outer wall of the rotating gear 6, and then the rotating gear 6 meshing with the positioning gear 7 can be rotated, thereby realizing the function of using the driving connecting belt 4 to drive the driving shaft 5 to rotate. The overall connection of the device is close, and the positioning gear 7 is used to prevent offset. Compared with the direct connection between the internal gear and the external gear, the positioning gear 7 can also play the role of correction and anti-loosening.

[0029] In this embodiment, a locking plate 701 is fixedly connected to the side of the positioning gear 7 opposite to the connecting shaft 8, and the locking plate 701 is located on the side of the pulley body 1. The locking plate 701 is located on the side of the rotating gear 6. The outer wall of the positioning disk 9 is provided with a positioning disk groove 901 along the circumferential direction, and the diameter of the positioning disk groove 901 is consistent with the diameter of the positioning connecting belt 10. The side wall of the fixed rotating shaft 11 is fixedly equipped with a positioning pin 101, and the end of the fixed rotating shaft 11 is rotatably connected with a rotating shaft disk 102, and the outer wall of the rotating shaft disk 102 is provided with a disk body groove 103 along the circumferential direction, and the diameter of the disk body groove 103 is consistent with the diameter of the positioning connecting belt 10.

[0030] By rotating the positioning gear 7, the connecting shaft 8 can be used to drive the positioning plate 9 to rotate, and then the fixed shaft 11 can be driven to rotate through the positioning connecting belt 10. A positioning pin 101 is provided on the fixed shaft 11, which can fix the fixed shaft 11 to improve the overall stability of the pulley. At the same time, the locking piece 701 located on the side of the positioning gear 7 can prevent the gear from detaching from the gear slot during high-speed rotation, thereby enhancing the overall safety and stability of the pulley.

[0031] The working principle and use process of the utility model are as follows: the rotation of the gear shaft 602 drives the rotation of the rotating gear 6 connected to its outer side wall, so that the positioning gear 7 can rotate around the circumferential direction of the outer side wall of the rotating gear 6, and then the rotating gear 6 meshing with the positioning gear 7 can be rotated, so as to realize the function of using the driving connecting belt 4 to drive the driving shaft 5 to rotate. The overall connection of the device is close, and the positioning gear 7 is used to prevent deviation. Compared with the direct connection between the inner gear and the outer gear, the positioning gear 7 can also play the function of correction and anti-loosening; through the rotation of the positioning gear 7, the connecting shaft 8 drives the rotation of the positioning plate 9, and then the positioning connecting belt 10 can drive the rotation of the fixed shaft 11, and the fixed shaft 11 is equipped with a positioning pin 101, which can fix the fixed shaft 11, improve the overall stability of the pulley, and at the same time, the positioning piece 701 located on the side of the positioning gear 7 can prevent the gear from detaching from the gear slot during high-speed rotation, so that the overall safety and stability of the pulley are enhanced.

[0032] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A pulley anti-loosening fixing device, comprising a pulley body (1), a positioning gear (7) and a fixed shaft (11), characterized in that: The inner side of the pulley body (1) is meshed and rotatably connected with a positioning gear (7), the outer side of the positioning gear (7) away from the pulley body (1) is meshed and rotatably connected with a rotating gear (6), a connecting shaft (8) is fixedly inserted in the middle of the side wall of the positioning gear (7), the end of the connecting shaft (8) away from the positioning gear (7) is fixedly connected with a positioning plate (9), the outer side wall of the positioning plate (9) is movably sleeved with a positioning connecting belt (10), and the inner side wall of the positioning connecting belt (10) away from the positioning plate (9) is rotatably connected with a fixed rotating shaft (11).

2. A pulley anti-loosening fixing device according to claim 1, characterized in that: The inner wall of the pulley body (1) is evenly provided with inner teeth (2) in the wheel body along the circumferential direction, and the outer wall of the positioning gear (7) is meshedly connected with the inner teeth (2) in the wheel body.

3. A pulley anti-loosening fixing device according to claim 1, characterized in that: The outer wall of the pulley body (1) is provided with an outer groove (3) along the circumferential direction, the inner cavity of the outer groove (3) of the pulley body is movably sleeved with a driving connection belt (4), and the inner wall of the driving connection belt (4) is rotatably connected to a driving shaft at a side away from the pulley body (1).

4. A pulley anti-loosening fixing device according to claim 1, characterized in that: A gear bearing (601) is fixedly mounted in the middle of the inner cavity of the rotating gear (6), and a gear shaft (602) is inserted in the middle of the gear bearing (601).

5. A pulley anti-loosening fixing device according to claim 1, characterized in that: A locking piece (701) is fixedly connected to the side of the positioning gear (7) that is away from the connecting shaft (8).

6. A pulley anti-loosening fixing device according to claim 5, characterized in that: The locking piece (701) is located on the side of the pulley body (1), and the locking piece (701) is located on the side of the rotating gear (6).

7. A pulley anti-loosening fixing device according to claim 1, characterized in that: The outer side wall of the positioning plate (9) is provided with a positioning plate groove (901) along the circumferential direction, and the diameter of the positioning plate groove (901) is consistent with the diameter of the positioning connection belt (10).

8. A pulley anti-loosening fixing device according to claim 1, characterized in that: The side wall of the fixed rotating shaft (11) is fixedly provided with a positioning pin (101), and the end of the fixed rotating shaft (11) is rotatably connected with a rotating shaft disc (102).

9. A pulley anti-loosening fixing device according to claim 8, characterized in that: The outer wall of the rotating shaft disk (102) is provided with a disk body groove (103) along the circumferential direction, and the diameter of the disk body groove (103) is consistent with the diameter of the positioning connection belt (10).

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