Deceleration driver for PVK conveying belt

Abstract

A speed reduction driver for a PVK conveying belt comprises a machine frame, the conveying belt, a driving motor, a speed reducer and a positioning mechanism, the driving motor is in transmission connection with the speed reducer through a transmission belt, the speed reducer is in transmission connection with the conveying belt, the speed reducer comprises a box body, and the box body is composed of a front box and a rear box which are symmetrical in structure. An input gear shaft, a middle gear shaft and an output shaft are arranged in the box body in parallel, the output shaft is a hollow shaft and is arranged on a conveying shaft of the conveying belt in a sleeving mode, a plurality of positioning blocks with positioning holes are arranged on the outer wall, on one side of the input gear shaft, of the front box and the rear box, and the positioning mechanism comprises a positioning shaft and a plug pin arranged at the end of the positioning shaft in a sliding mode. The angle of the box body is adjusted through connection of the plug pin and the positioning hole, so that tension adjustment of the transmission belt is achieved. The tension adjusting device has the advantages of being compact in structure, stable in transmission, convenient and fast to maintain, convenient to adjust and the like.

Description

TECHNICAL FIELD

[0001] The utility model relates to a speed reducer, especially a speed reducer for PVK conveying belt. BACKGROUND

[0002] The PVK conveying belt is widely used in logistics sorting, airport luggage transmission and other scenes, and its driving system is usually composed of a driving motor, a speed reducer and a transmission mechanism, which is responsible for providing stable and reliable power to ensure the smooth and efficient operation of the conveying belt. The output shaft of the speed reducer of the traditional driving system usually needs to be connected with the driving shaft of the conveying belt through a shaft coupling, which not only increases the number of components and the axial length, but also requires high installation precision of the shaft coupling, otherwise it will cause vibration, noise, abnormal wear, and even equipment damage. The impact generated when the motor starts, stops or the load changes will be directly or indirectly transmitted to the speed reducer and the conveying belt through the rigid transmission member, affecting the service life of the transmission components and possibly causing the materials on the conveying belt to slip. Moreover, the entire speed reducer needs to be disassembled from the rack during maintenance or repair, which is a complex, time-consuming and laborious process. When adjusting the tension of the belt, the overall installation position of the motor or the speed reducer usually needs to be moved, which is cumbersome to operate, requires loosening multiple fasteners, and the adjustment precision is difficult to control. The process is not convenient and intuitive. SUMMARY

[0003] The utility model aims at solving the deficiency of prior art, provides a kind of compact structure, transmission stable, maintenance convenient, the speed reducer for PVK conveying belt of easy adjustment.

[0004] The utility model discloses a technical scheme that solves its technical problem is adopted: a kind of PVK conveying belt is used to reduce the driver, including rack, the rack is equipped with conveying belt and the drive motor of driving conveying belt operation, speed reducer, the drive motor with the speed reducer is connected by transmission belt drive, the speed reducer is transmission connection with conveying belt;The speed reducer includes box, the box is formed by front box and rear box by bolt fixed connection, the front box and rear box structure are mutually symmetrical;Input gear shaft, intermediate gear shaft, output shaft are rotationally equipped in the box, the input gear shaft, intermediate gear shaft and output shaft are mutually parallel arrangement;The end of the input gear shaft extends to outside and is equipped with input pulley with the box being penetrated, the motor shaft of the drive motor is equipped with the drive pulley that is transmission connection with the input pulley by transmission belt drive, the output shaft is hollow shaft, the output shaft is penetrated with the box and extends to outside, the inside of the output shaft is equipped with connecting groove along its axial direction, the output shaft is equipped on the transmission shaft of conveying belt by connecting groove sleeve;Front box and rear box are equipped with at least two locating blocks on the outer wall of the side close to input gear shaft, and locating holes are provided on the locating blocks;Positioning mechanism is further provided on the rack, and the positioning mechanism comprises a positioning shaft, the positioning shaft is fixed to the rack by a locking nut, the end of the positioning shaft is provided with a latch that can be inserted into the positioning hole, and the angle of the box is adjusted by the connection of the latch and the positioning hole to adjust the tension of the transmission belt.

[0005] As preferred, the front box and the rear box are provided with bearing seats at both ends of the input gear shaft, the intermediate gear shaft and the output shaft, and the bearing seats are provided with support bearings for supporting the rotation of the input gear shaft, the intermediate gear shaft and the output shaft, respectively.

[0006] As preferred, the front box and the rear box are provided with transparent covers outside the bearing seats at both ends of the intermediate gear shaft and outside the bearing seats on the side of the input gear shaft away from the input end, and the front box and the rear box are provided with flange covers outside the bearing seats on the side of the input gear shaft close to the input end and outside the bearing seats at both ends of the output shaft.

[0007] As preferred, the intermediate gear shaft is sleeved with a transition gear engaged with the input gear shaft, and the output shaft is sleeved with an output gear engaged with the intermediate gear shaft, and the intermediate gear shaft is provided with a shaft sleeve between the transition gear and the support bearing close to the transition gear, and the output shaft is provided with a shaft sleeve between the output gear and the support bearing close to the output gear.

[0008] As preferred, the side walls of the front box and the rear box and the outer rings of the bearing seats are uniformly provided with reinforcing ribs.

[0009] Preferably, the front and rear housings have an arc-shaped structure on the outer wall near the input gear shaft with the output shaft as the center. The positioning blocks are evenly distributed on the outer wall. The end of the positioning shaft is provided with a fork located on the path of the angular displacement of the positioning block. The fork is located on both sides of the positioning block, and the pin is movably disposed in the fork.

[0010] The output shaft of this reducer is designed as a hollow shaft, which can be directly fitted onto the drive shaft of the conveyor belt to transmit torque. This greatly simplifies the structure, shortens the transmission chain, improves transmission efficiency and installation accuracy, and saves installation space. A positioning block with positioning holes is set on the input side of the housing, and a positioning mechanism consisting of a positioning shaft and a sliding pin is correspondingly set on the frame. The tension of the transmission belt is adjusted by finely adjusting the angle of the reducer housing with the output shaft as the axis. There is no need to move the bulky motor or disassemble the reducer as a whole. Simply pull out the pin, rotate the housing slightly to the appropriate tension, and then insert the pin into the corresponding new positioning hole to lock it. The operation is extremely convenient, fast, and precise, greatly reducing the difficulty of daily maintenance. The housing is made of a front and rear housing with a completely symmetrical structure, which are spliced ​​together by bolts. During the assembly of the reducer, the positioning block and pin can be used as a pre-positioning auxiliary tool to help the housing quickly find its initial position on the frame, which greatly improves the assembly efficiency and accuracy. Attached Figure Description

[0011] Fig. 1 This is a structural schematic diagram of an embodiment of the present utility model;

[0012] Fig. 2 This is a structural cross-sectional view of the speed reducer of this utility model.

[0013] In the diagram: 1. Frame; 2. Drive motor; 3. Reducer; 4. Drive belt; 5. Housing; 6. Input gear shaft; 7. Intermediate gear shaft; 8. Output shaft; 9. Input pulley; 10. Motor shaft; 11. Drive pulley; 12. Connecting groove; 13. Front housing; 14. Rear housing; 15. Bolt; 16. Positioning block; 17. Positioning hole; 18. Positioning shaft; 19. Locking nut; 20. Pin; 21. Bearing housing; 22. Support bearing; 23. Through cover; 24. Flange cover; 25. Transition gear; 26. Output gear; 27. Bushing; 28. Reinforcing rib; 29. ​​Shift fork. Detailed Implementation

[0014] The technical solution of this utility model will be further described in detail below through specific embodiments and in conjunction with the accompanying drawings.

[0015] Example: Figs. 1-2The PVK conveyor belt speed reducer drive shown includes a frame 1, on which a conveyor belt, a drive motor 2, and a speed reducer 3 are mounted. The drive motor 2 and the speed reducer 3 are connected by a transmission belt 4, and the speed reducer 3 is connected to the conveyor belt.

[0016] The reducer 3 includes a housing 5, within which an input gear shaft 6, an intermediate gear shaft 7, and an output shaft 8 are rotatably mounted. The housing 5 is formed by a front housing 13 and a rear housing 14 fixedly connected by bolts 15. The front housing 13 and the rear housing 14 are symmetrically structured. At least two positioning blocks 16 are provided on the outer wall of the front housing 13 and the rear housing 14 near the input gear shaft 6, and the positioning blocks 16 are provided with positioning holes 17. Reinforcing bars are evenly distributed on the side walls of the front housing 13 and the rear housing 14, as well as on the outer ring of the bearing housing 21. The frame 1 is further provided with a positioning mechanism, which includes a positioning shaft 18. The positioning shaft 18 is fixed to the frame 1 by a locking nut 19. The end of the positioning shaft 18 is provided with a pin 20 that can be inserted into the positioning hole 17. The front box 13 and the rear box 14 have an arc-shaped structure on the outer wall near the input gear shaft 6 with the axis of the output shaft 8 as the center. The positioning blocks 16 are evenly arranged on the outer wall. The end of the positioning shaft 18 is provided with a shift fork located on the path of the angular displacement of the positioning block 16. 29. The shift fork 29 is located on both sides of the positioning block 16. The pin 20 is movably disposed within the shift fork 29. The angle of the housing 5 is adjusted by connecting the pin 20 with the positioning hole 17, thereby adjusting the tension of the transmission belt 4. A positioning block 16 with a positioning hole 17 is provided on the input side of the housing 5. A positioning mechanism consisting of a positioning shaft 18 and a sliding pin 20 is correspondingly provided on the frame 1. The angle of the housing 5 of the reducer 3 is finely adjusted with the output shaft 8 as the axis to adjust the tension of the transmission belt 4, without the need to move the bulky motor or The reducer 3 can be disassembled as a whole simply by pulling out the pin 20, slightly rotating the housing 5 to the appropriate tension, and then inserting the pin 20 into the corresponding new positioning hole 17 to lock it in place. The operation is extremely convenient, fast, and precise, greatly reducing the difficulty of daily maintenance. The housing 5 is made of a front housing 13 and a rear housing 14 with a completely symmetrical structure, which are spliced ​​together by bolts 15. When assembling the reducer 3, the positioning block 16 and the pin 20 can be used as pre-positioning auxiliary tools to help the housing 5 quickly find its initial position on the frame 1, thereby greatly improving assembly efficiency and accuracy.

[0017] The input gear shaft 6, intermediate gear shaft 7, and output shaft 8 are arranged parallel to each other. The front housing 13 and rear housing 14 are each provided with bearing seats 21 at both ends of the corresponding input gear shaft 6, intermediate gear shaft 7, and output shaft 8. Each bearing seat 21 contains a support bearing 22 for supporting the rotation of the input gear shaft 6, intermediate gear shaft 7, and output shaft 8. The front housing 13 and rear housing 14 are each provided with a transparent cover 23 on the outer side of the bearing seats 21 at both ends of the intermediate gear shaft 7 and on the outer side of the bearing seat 21 on the side of the input gear shaft 6 away from the input end. The front housing 13 and rear housing 14 are also provided with transparent covers 23 on the outer side of the bearing seats 21 on the input end side of the input gear shaft 6 and on the outer side of the bearing seat 21 on both ends of the output shaft 8. Flange covers 24 are provided on the outer side of the end bearing housing 21; a transition gear 25 that meshes with the input gear shaft 6 is sleeved on the intermediate gear shaft 7, and an output gear 26 that meshes with the intermediate gear shaft 7 is sleeved on the output shaft 8. A bushing 27 is provided between the transition gear 25 and the adjacent support bearing 22 on the intermediate gear shaft 7, and between the output gear 26 and the adjacent support bearing 22 on the output shaft 8. One end of the input gear shaft 6 extends through the housing 5 to the outside and is sleeved with an input pulley 9. A drive pulley 11 that is connected to the input pulley 9 via a transmission belt 4 is sleeved on the motor shaft 10 of the drive motor 2. The output shaft 8 is a hollow shaft, with both ends extending outwards through the housing 5. A connecting groove 12 is provided on the inner side of the output shaft 8 along its axial direction. The output shaft 8 is sleeved on the conveyor shaft of the conveyor belt through the connecting groove 12. The output shaft 8 of the reducer 3 is designed as a hollow shaft, which can be directly sleeved on the drive shaft of the conveyor belt to transmit torque, greatly simplifying the structure, shortening the transmission chain, improving transmission efficiency and installation accuracy, and saving installation space.

[0018] The embodiments described above are merely preferred solutions of this utility model and are not intended to limit this utility model in any way. Other variations and modifications are possible without departing from the technical solutions described in the claims.

Claims

1. A speed reducer drive for a PVK conveyor belt, comprising a frame (1), wherein the frame (1) is provided with a conveyor belt, a drive motor (2) for driving the conveyor belt, and a speed reducer (3), characterized in that: The drive motor (2) and the reducer (3) are connected by a transmission belt (4), and the reducer (3) is connected by a transmission belt; the reducer (3) includes a housing (5), which is formed by a front housing (13) and a rear housing (14) fixedly connected by bolts (15), and the front housing (13) and the rear housing (14) are symmetrical in structure; the housing (5) is rotatably provided with an input gear shaft (6), an intermediate gear shaft (7), and an output shaft (8), which are arranged parallel to each other; one end of the input gear shaft (6) extends through the housing (5) to the outside and is fitted with an input pulley (9), and a drive pulley (11) connected to the input pulley (9) via a transmission belt (4) is fitted on the motor shaft (10) of the drive motor (2), and the output shaft (6) is rotatably connected with the conveyor belt (4); the output shaft (6) is rotatably connected with the conveyor belt (4), and the drive motor (2 ... drive motor ( 8) is a hollow shaft. Both ends of the output shaft (8) extend through the housing (5) to the outside. The inner side of the output shaft (8) is provided with a connecting groove (12) along its axial direction. The output shaft (8) is sleeved on the conveyor shaft of the conveyor belt through the connecting groove (12). The front housing (13) and the rear housing (14) are provided with at least two positioning blocks (16) on the outer wall near the input gear shaft (6). The positioning blocks (16) are provided with positioning holes (17). The frame (1) is also provided with a positioning mechanism. The positioning mechanism includes a positioning shaft (18). The positioning shaft (18) is fixed to the frame (1) by a locking nut (19). The end of the positioning shaft (18) is provided with a pin (20) that can be inserted into the positioning hole (17). The angle of the housing (5) is adjusted by connecting the pin (20) with the positioning hole (17) to achieve the tension adjustment of the transmission belt (4).

2. The reduction drive for PVK conveyor belts according to claim 1, characterized in that: The front box (13) and the rear box (14) are each provided with bearing seats (21) at both ends of the corresponding input gear shaft (6), intermediate gear shaft (7) and output shaft (8). The bearing seats (21) are provided with support bearings (22) for supporting the rotation of the input gear shaft (6), intermediate gear shaft (7) and output shaft (8).

3. The reduction drive for PVK conveyor belts according to claim 2, characterized in that: The front box (13) and the rear box (14) are provided with transparent covers (23) on the outside of the bearing seats (21) at both ends of the intermediate gear shaft (7) and on the outside of the bearing seats (21) on the side of the input gear shaft (6) away from the input end. The front box (13) and the rear box (14) are provided with flange covers (24) on the outside of the bearing seats (21) on the side of the input end of the input gear shaft (6) and on the outside of the bearing seats (21) at both ends of the output shaft (8).

4. The reduction drive for PVK conveyor belts according to claim 2, characterized in that: The intermediate gear shaft (7) is fitted with a transition gear (25) that meshes with the input gear shaft (6), and the output shaft (8) is fitted with an output gear (26) that meshes with the intermediate gear shaft (7). The intermediate gear shaft (7) is provided with bushings (27) between the transition gear (25) and the adjacent support bearing (22), and the output shaft (8) is provided with bushings (27) between the output gear (26) and the adjacent support bearing (22).

5. The reduction drive for PVK conveyor belts according to claim 2, characterized in that: Reinforcing ribs (28) are uniformly provided on the side walls of the front box (13) and the rear box (14) and on the outer ring of the bearing seat (21).

6. The reduction drive for PVK conveyor belts according to claim 1, characterized in that: The front box (13) and the rear box (14) have an arc-shaped structure on the outer wall near the input gear shaft (6) with the axis of the output shaft (8) as the center. The positioning blocks (16) are evenly arranged on the outer wall. The end of the positioning shaft (18) is provided with a fork (29) located on the path of the angular displacement of the positioning block (16). The fork (29) is located on both sides of the positioning block (16). The pin (20) is movably arranged in the fork (29).

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