Loosening type hydraulic lead screw combined drive deviation-preventing belt tensioning device

Abstract

The utility model discloses a loose type hydraulic lead screw combined drive deviation-preventing belt tensioning device which comprises a tensioning wheel and a driving assembly. The driving assembly comprises a driving source, a transmission rod, a transmission block and a mounting seat, the mounting seat is provided with a first end and a second end, the first end of the mounting seat is rotationally connected with a rack for mounting a belt pulley, and the tensioning wheel is arranged at the second end of the mounting seat. Hydraulic pressure maintaining is replaced by the spring, so that the failure rate of a sealing system is greatly reduced; meanwhile, the spring or the belt can be replaced only by disassembling the locking nut during maintenance, and the single-time maintenance time is short.

Description

Technical Field

[0001] This utility model relates to the field of mechanical transmission technology, and in particular to a loose-type hydraulic screw composite drive anti-deviation belt tensioning device. Background Technology

[0002] Belt drives, as a common transmission method, are widely used in various transmission fields, especially in transportation vehicles and agricultural machinery. During the operation of a belt drive, because belts are prone to slack, they need to be tensioned to apply positive pressure and prevent slippage.

[0003] Traditional belt tensioning devices use a hydraulic cylinder to extend and retract, driving a flat tensioning pulley to loosen or tighten the belt. However, these devices have the following drawbacks:

[0004] 1. The hydraulic system relies on continuous pressure maintenance: long-term high pressure can easily cause seals to fail, posing a risk of pressure leakage; 2. The flat tensioning wheel is prone to deviation: an additional deviation correction mechanism is required, increasing the complexity and cost of the system. Utility Model Content

[0005] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a loose-type hydraulic screw composite drive anti-deviation belt tensioning device. By replacing hydraulic pressure with a spring, the failure rate of the sealing system is greatly reduced. At the same time, maintenance only requires disassembling the locking nut to replace the spring or belt, and the maintenance time is short.

[0006] The objective of this utility model is achieved through the following technical solution:

[0007] A release-type hydraulic screw composite drive anti-deviation belt tensioning device includes a tensioning wheel and a drive assembly;

[0008] The drive assembly includes a drive source, a transmission rod, a transmission block, and a mounting base. The mounting base has a first end and a second end. The first end of the mounting base is rotatably connected to the frame on which the pulley is mounted. The tensioning wheel is disposed at the second end of the mounting base.

[0009] The transmission block is connected to the frame, the first end of the transmission rod is hinged to the middle of the mounting base, the second end of the transmission rod passes through the transmission block and is connected to the drive source, and an elastic reset member is provided on the outside of the transmission rod;

[0010] The drive source is used to drive the first end of the transmission rod to move along the axial direction of the transmission rod. When the first end of the transmission rod moves axially, the elastic reset member resets to loosen the belt or the elastic reset member is compressed to keep the belt taut.

[0011] Furthermore, the elastic reset element is a spring.

[0012] Furthermore, the driving source is a hydraulic cylinder.

[0013] Furthermore, the transmission rod is a lead screw, and the second end of the transmission rod coaxially passes through the piston rod of the drive source;

[0014] The transmission rod is provided with a locking nut at its end, and the locking nut abuts against the end face of the piston rod.

[0015] Furthermore, the transmission rod is connected to the mounting base via a T-shaped connecting sleeve;

[0016] The connecting sleeve is rotatably connected to the mounting base via a rotating shaft and an ear plate. The transmission rod extends into the connecting sleeve, and the first end of the elastic reset member extends into the connecting sleeve.

[0017] Furthermore, the transmission block is provided with a guide hole, and the second end of the elastic reset member extends into the guide hole.

[0018] Furthermore, the tensioning wheel has a guide groove in the middle, and the belt is disposed in the guide groove.

[0019] Furthermore, the mounting base includes two bow-shaped connecting plates, with the two ends of the two connecting plates connected by connecting rods respectively, forming a mounting cavity between the two connecting plates, and the tensioning wheel being rotatably connected in the mounting cavity via a rotating shaft.

[0020] The beneficial effects of this utility model are:

[0021] 1) This utility model replaces hydraulic pressure holding with springs, which greatly reduces the failure rate of the sealing system; at the same time, maintenance only requires disassembling the locking nut to replace the spring or belt, and the maintenance time is short.

[0022] 2) By setting guide grooves on the tensioner pulley, the probability of the belt slipping off the tensioner pulley can be greatly reduced. Attached Figure Description

[0023] Figure 1 This is a three-dimensional representation of the loose-release hydraulic screw composite drive anti-deviation belt tensioning device in the embodiments of this utility model. Figure 1 ;

[0024] Figure 2 A three-dimensional anti-deviation belt tensioning device for a combined hydraulic screw drive system. Figure 2 ;

[0025] Figure 3 This is a front view of a loose-type hydraulic screw composite drive anti-deviation belt tensioning device.

[0026] In the diagram, 1. tension wheel; 2. drive source; 3. transmission rod; 4. transmission block; 5. mounting base; 6. frame; 7. belt; 8. elastic reset component; 9. lock nut; 10. connecting sleeve; 11. guide groove; 12. connecting plate. Detailed Implementation

[0027] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0028] See Figures 1-3 This utility model provides a technical solution: Example

[0029] like Figures 1-3 As shown, a loose-type hydraulic screw composite drive anti-deviation belt tensioning device includes a tensioning wheel 1 and a drive assembly;

[0030] The drive assembly includes a drive source 2 (the drive source 2 is a hydraulic cylinder), a transmission rod 3, a transmission block 4, and a mounting base 5. The mounting base 5 has a first end and a second end. The first end of the mounting base 5 is rotatably connected to the frame 6 that mounts the belt pulley 7. The tension wheel 1 is disposed at the second end of the mounting base 5. The mounting base 5 includes two bow-shaped connecting plates 12. The two ends of the two connecting plates 12 are connected by connecting rods, and a mounting cavity is formed between the two connecting plates 12. The tension wheel 1 is rotatably connected in the mounting cavity through a rotating shaft.

[0031] The transmission block 4 is connected to the frame 6. The first end of the transmission rod 3 is hinged to the middle of the mounting base 5. The second end of the transmission rod 3 passes through the transmission block 4 and is connected to the drive source 2. An elastic reset member 8 is provided on the outside of the transmission rod 3. The elastic reset member 8 is a spring.

[0032] The drive source 2 is used to drive the first end of the transmission rod 3 to move along the axial direction of the transmission rod 3. When the first end of the transmission rod 3 moves axially, the elastic reset member 8 resets to loosen the belt 7 or the elastic reset member 8 is compressed to keep the belt 7 taut.

[0033] The transmission rod 3 is a lead screw, and the second end of the transmission rod 3 coaxially passes through the piston rod of the drive source 2; the end of the transmission rod 3 (threaded connection) is provided with a locking nut 9, and the locking nut 9 abuts against the end face of the piston rod.

[0034] The transmission rod 3 is connected to the mounting base via a T-shaped connecting sleeve 10. The connecting sleeve 10 is rotatably connected to the mounting base via a rotating shaft and an ear plate. The transmission rod extends into the connecting sleeve 10, and the first end of the elastic reset member 8 extends into the connecting sleeve 10. The transmission block 4 is provided with a guide hole, and the second end of the elastic reset member 8 extends into the guide hole. Both ends of the spring are respectively pressed against the connecting sleeve 10 and the guide hole, thus facilitating the disassembly and replacement of the spring.

[0035] The tensioning pulley 1 has a guide groove 11 in the middle, and the belt 7 is disposed in the guide groove 11. The tensioning pulley 1 has a 2° tapered slope on both sides, and the guide groove 11 is formed between the slopes. The guide groove 11 is used to tension the belt 7, so that the belt 7 is always on the tensioning pulley 1, and to prevent the belt 7 from slipping off the tensioning pulley 1 when tensioning.

[0036] Specifically: 1. The piston rod of the drive source 2 is positioned downwards, away from the tensioner 1. 2. The groove of the tensioner 1 is pressed against the outside of the belt 7.

[0037] Working principle: When it is necessary to loosen belt 7: start drive source 2 (hydraulic cylinder), the piston end of drive source 2 extends, and drives transmission rod 3 to move along its axis by lifting locking nut 9. During this process, spring is compressed, tension wheel 1 moves towards drive source 2, and thus tension wheel 1 is disengaged from belt 7.

[0038] When belt 7 needs to be tensioned, drive source 2 depressurizes, piston rod resets, spring releases its elastic force, and transmission rod 3 resets under the action of spring, which in turn pushes tensioning wheel 1 to press belt 7. When belt 7 is pressed, the spring maintains the tension on belt 7. The hydraulic system only works momentarily when switching states, reducing energy consumption by 30% compared to traditional structures.

[0039] This invention replaces hydraulic pressure holding with a spring, significantly reducing the failure rate of the sealing system; at the same time, maintenance only requires removing the locking nut to replace the spring or belt, resulting in short maintenance time; and by setting a guide groove on the tensioning pulley, the probability of the belt slipping off the tensioning pulley can be greatly reduced.

[0040] The above description is merely a preferred embodiment of this utility model. It should be understood that this utility model is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the concept described herein through the above teachings or related technologies or knowledge. Modifications and variations made by those skilled in the art that do not depart from the spirit and scope of this utility model should be protected within the scope of the appended claims.

Claims

1. A release-type hydraulic screw composite drive anti-deviation belt tensioning device, characterized in that: Including tensioner and drive assembly; The drive assembly includes a drive source, a transmission rod, a transmission block, and a mounting base. The mounting base has a first end and a second end. The first end of the mounting base is rotatably connected to the frame on which the pulley is mounted. The tensioning wheel is disposed at the second end of the mounting base. The transmission block is connected to the frame, the first end of the transmission rod is hinged to the middle of the mounting base, the second end of the transmission rod passes through the transmission block and is connected to the drive source, and an elastic reset member is provided on the outside of the transmission rod; The drive source is used to drive the first end of the transmission rod to move axially along the transmission rod. When the first end of the transmission rod moves axially, the elastic reset member resets to loosen the belt or the elastic reset member is compressed to keep the belt taut.

2. The loose-type hydraulic screw composite drive anti-deviation belt tensioning device according to claim 1, characterized in that: The elastic reset element is a spring.

3. The loose-type hydraulic screw composite drive anti-deviation belt tensioning device according to claim 1, characterized in that: The driving source is a hydraulic cylinder.

4. The release-type hydraulic screw composite drive anti-deviation belt tensioning device according to claim 3, characterized in that: The transmission rod is a lead screw, and the second end of the transmission rod passes coaxially through the piston rod of the drive source; The transmission rod is provided with a locking nut at its end, and the locking nut abuts against the end face of the piston rod.

5. The loose-type hydraulic screw composite drive anti-deviation belt tensioning device according to claim 4, characterized in that: The transmission rod is connected to the mounting base via a T-shaped connecting sleeve; The connecting sleeve is rotatably connected to the mounting base via a rotating shaft and an ear plate. The transmission rod extends into the connecting sleeve, and the first end of the elastic reset member extends into the connecting sleeve.

6. The loose-type hydraulic screw composite drive anti-deviation belt tensioning device according to claim 5, characterized in that: The transmission block is provided with a guide hole, and the second end of the elastic reset member extends into the guide hole.

7. The loose-type hydraulic screw composite drive anti-deviation belt tensioning device according to claim 1, characterized in that: The tensioning wheel has a guide groove in the middle, and the belt is placed in the guide groove.

8. The loose-type hydraulic screw composite drive anti-deviation belt tensioning device according to claim 1, characterized in that: The mounting base includes two bow-shaped connecting plates, with the two ends of the two connecting plates connected by connecting rods, forming a mounting cavity between the two connecting plates. The tensioning wheel is rotatably connected to the mounting cavity via a rotating shaft.

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