Belt tension adjusting mechanism

Abstract

The utility model discloses a belt tension adjusting mechanism which comprises a machine frame, a belt tensioning roller and an adjusting assembly, the two ends of the belt tensioning roller are installed on the machine frame through installation bases respectively, and the installation bases can move front and back along the machine frame; the adjusting assemblies and the mounting bases are arranged in a one-to-one correspondence mode, each adjusting assembly comprises a first adjusting piece, a second adjusting piece and an elastic piece, and the first adjusting pieces are arranged in the front-back direction and used for driving the corresponding mounting bases to move front and back; the first adjusting piece is sleeved with the elastic piece, and the two ends of the elastic piece abut against the corresponding installation base and the second adjusting piece respectively. The second adjusting piece is sleeved on the first adjusting piece in a threaded mode. The belt tension adjusting device not only can ensure the tension adjustment of the belt, but also can avoid the phenomenon of excessive tensioning of the belt, thereby ensuring the service life of the belt.

Description

TECHNICAL FIELD

[0001] The utility model relates to logistics transportation equipment technical field especially relates to a belt tension adjusting mechanism. BACKGROUND

[0002] In the logistics transportation industry, the belt is often used for conveying goods. In the process of belt operation, it is necessary to ensure that the belt and the driving roller have sufficient friction driving force, which requires that the belt must have a certain tension to keep the belt in tension. After a period of operation, the new belt will also have a natural extension, which will cause the belt to relax. At this time, the belt tension adjusting mechanism is needed to adjust the tension of the belt. However, the existing belt tension adjusting mechanism is prone to over-tensioning of the belt during adjustment, which affects the service life of the belt. SUMMARY

[0003] In order to overcome the above-mentioned shortcomings, the purpose of the utility model is to provide a belt tension adjusting mechanism which can not only adjust the tension of the belt, but also avoid the phenomenon of over-tensioning of the belt and ensure the service life of the belt.

[0004] In order to achieve the above purpose, the utility model adopts the technical scheme of: a belt tension adjusting mechanism, comprising

[0005] A rack;

[0006] A belt tensioning roller, both ends of the belt tensioning roller are installed on the rack through the mounting seat, and the mounting seat can move back and forth along the rack;

[0007] An adjusting assembly is provided one by one corresponding to the mounting seat, each adjusting assembly comprises a first adjusting member, a second adjusting member and an elastic member, the first adjusting member is arranged in the front and back direction to drive the corresponding mounting seat to move back and forth, the elastic member is sleeved on the first adjusting member, and both ends thereof are respectively abutted on the corresponding mounting seat and second adjusting member, and the second adjusting member is threadedly sleeved on the first adjusting member.

[0008] The utility model has the beneficial effects of:

[0009] The belt is wound on the belt tensioning roller, and the belt is tensioned by moving the belt tensioning roller in the front-rear direction, and the front-rear movement of the belt tensioning roller is realized by driving the mounting seat through the adjusting assembly; in the adjusting assembly, first, the first adjusting member drives the mounting seat to move to drive the movement of the belt tensioning roller mounted on the mounting seat, and then the second adjusting member is screwed on the first adjusting member to press the elastic member, and then the elastic member can be flexibly pressed on the mounting seat to drive the mounting seat to further move to further tension the belt. Because the cooperation of the second adjusting member and the elastic member can flexibly tension the belt, the problem of reducing the service life of the belt caused by excessive tensioning of the belt is avoided.

[0010] Further, the mounting seat comprises a seat body, and the seat body is provided with a first abutting surface and a second abutting surface for abutting the first adjusting member and the elastic member, respectively; and the second abutting surface is provided with a hole for passing the first adjusting member. The first abutting surface, the second abutting surface and the hole are provided to avoid interference of the first adjusting member with the second abutting surface during operation, so that the first adjusting member and the second adjusting member can independently drive the mounting seat to move.

[0011] Further, the first adjusting member comprises a first screw rod and a first nut, the first screw rod is sequentially passed through the rack and the mounting seat in the front-rear direction, the first nut is threadedly sleeved on the first screw rod, and the first nut is fixedly connected with the rack. By cooperating the first screw rod and the first nut, when the first screw rod is rotated, the first screw rod can be displaced relative to the rack, thereby pushing the mounting seat to move along the rack.

[0012] Further, one end of the first screw rod away from the mounting seat is fixedly connected with a nut end cover to facilitate applying force to the first screw rod.

[0013] Further, the second adjusting member comprises a second nut, and the side of the second nut facing the elastic member is integrally provided with an abutting plate for abutting the elastic member, and the radial dimension of the abutting plate is greater than the radial dimension of the elastic member. By providing the abutting plate, the contact area of the second nut and the elastic member can be increased, so that the force applied by the second nut to the elastic member is more uniform.

[0014] Further, a buffer gasket is arranged between the elastic member and the mounting seat.

[0015] Further, the rack comprises a rack body, and the rack body is provided with a mounting frame plate corresponding to the mounting seat; correspondingly, the mounting seat and the adjusting assembly are located in the area surrounded by the mounting frame plate. The movement range of the mounting seat is limited by the mounting frame plate.

[0016] Further, the mounting frame plate is provided with at least one guide rail arranged along the front-rear direction, and the mounting seat is provided with a sliding groove corresponding to the guide rail, and the sliding groove can move along the corresponding guide rail. The cooperation of the guide rail and the sliding groove makes the movement of the mounting seat more stable.

[0017] Further, the rack body is provided with a roller mounting hole corresponding to the mounting frame plate, and the roller mounting hole comprises a first hole and a second hole which are communicated with each other along the front-rear direction, the diameter of the first hole is matched with the radial dimension of the belt tensioning roller, and the diameter of the second hole is greater than the radial dimension of the belt tensioning roller. The second hole is arranged to facilitate the installation of the belt tensioning roller on the rack.

[0018] Further, the elastic member is a spring, and the spring is always in a compressed state. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a structure schematic view of the belt installed on the belt tensioning roller of the embodiment of the utility model;

[0020] Figure 2 It is a structure schematic view of the rack of the embodiment of the utility model; Figure 1 It is a sectional view along A-A direction;

[0021] Figure 3 It is a structure schematic view of the rack of the embodiment of the utility model;

[0022] Figure 4 It is a structure schematic view of the adjusting assembly of the embodiment of the utility model;

[0023] Figure 5 It is a structure schematic view of the adjusting assembly of the embodiment of the utility model from another perspective;

[0024] Figure 6 It is a structure schematic view of the mounting seat of the embodiment of the utility model.

[0025] In the drawings:

[0026] 1-rack; 11-rack body; 12-mounting frame plate; 121-guide rail; 2-belt tensioning roller; 3-mounting seat; 31-seat body; 32-first abutting surface; 33-second abutting surface; 331-opening; 4-belt; 51-first screw; 511-nut end cover; 52-first nut; 53-second nut; 531-abutting plate; 54-spring; 6-cushioning gasket. DETAILED DESCRIPTION

[0027] The advantages and features of the present application will be more easily understood by those skilled in the art from the preferred embodiments of the present application in conjunction with the accompanying drawings, so as to define the protection scope of the present application more clearly and explicitly.

[0028] Embodiment

[0029] Referring to FIG. 1, Figures 1-4 The utility model discloses a belt tension adjusting mechanism, including frame 1, belt tensioning roller 2, adjusting assembly, wherein the both ends of belt tensioning roller 2 are installed on frame 1 through mounting seat 3 respectively, and mounting seat 3 can move along frame 1 forwards and backwards. Adjusting assembly is set up one by one with mounting seat 3, and each adjusting assembly includes first adjusting piece, second adjusting piece, elastic piece, first adjusting piece is arranged along the front and back direction, is used to drive corresponding mounting seat 3 to move forwards and backwards, elastic piece is sleeved on first adjusting piece, and both ends thereof are respectively abutted on corresponding mounting seat 3, second adjusting piece, second adjusting piece is threaded on first adjusting piece.

[0030] In use, the belt 4 is arranged on the belt tensioning roller 2, and the belt tensioning roller 2 is moved in the front and back direction to realize the tensioning of the belt 4, and the movement of the belt tensioning roller 2 in the front and back direction is realized by the driving of the adjusting assembly to the mounting seat 3. It should be noted that the belt 4 is tensioned by the movement of the belt tensioning roller 2, which is the prior art, and the working process of the present embodiment will not be described again. The movement driving of the adjusting assembly to the belt tensioning roller 2 will be described below.

[0031] In some embodiments, referring to FIG. 1, Figure 3 The frame 1 includes a frame body 11, and the frame body 11 is provided with a mounting frame plate 12 corresponding to the mounting seat 3. The corresponding mounting seat 3 and adjusting assembly are located within the area surrounded by the mounting frame plate 12.

[0032] Referring to FIG. 1, Figures 4-5 The first adjusting piece includes a first screw rod 51 and a first nut 52, the first screw rod 51 is sequentially arranged on the mounting frame plate 12 and the mounting seat 3 in the front and back direction, the first nut 52 is threaded on the first screw rod 51, and the first nut 52 is fixedly connected (such as welded) to the mounting frame plate 12. When the first screw rod 51 is tightened along the first nut 52, the first nut 52 remains stationary because it is fixedly connected to the mounting frame plate 12, and the first screw rod 51 can move forward and backward along the mounting frame plate 12, thereby abutting on the mounting seat 3 and driving the mounting seat 3 to move.

[0033] Further, in order to facilitate the tightening force applied to the first screw rod 51, the end of the first screw rod 51 away from the mounting seat 3 is fixedly connected with a nut end cover 511. The radial dimension of the nut end cover 511 is greater than the radial dimension of the first screw rod 51, so as to facilitate the hand to hold and apply force.

[0034] To improve the movement stability of the first screw 51, in some embodiments, two first nuts 52 are provided and respectively fixedly welded to the mounting frame plate 12. The first screw 51 can pass through one first nut 52, the mounting frame plate 12, and the other first nut 52 in sequence. By using the two first nuts 52 to limit the movement of the first screw 51, the movement stability of the first screw 51 is improved.

[0035] In some embodiments, the second adjusting member includes a second nut 53 threaded onto the first screw 51. The second nut 53 has an integrally formed abutment plate 531 on the side facing the elastic member, the radial dimension of which is larger than that of the elastic member. The screwing of the second nut 53 onto the first screw 51 applies pressure to the elastic member, causing it to elastically press against the mounting base 3. The abutment plate 531 increases the contact area between the second nut 53 and the elastic member, resulting in a more uniform force application from the second nut 53 to the elastic member.

[0036] In some embodiments, the elastic element is a spring 54, which is always in a compressed state so that it can always press against the mounting base 3. Furthermore, a buffer pad 6 is provided between the spring 54 and the mounting base 3.

[0037] To ensure that both the first screw 51 and the elastic element can apply independent moving driving force to the mounting base 3, in some embodiments, see Appendix Figure 6 As shown, the mounting base 3 includes a base body 31, on which a first abutment surface 32 and a second abutment surface 33 are respectively provided for the first adjusting member and the elastic member to abut against each other; and an opening 331 is provided on the second abutment surface 33 for the first adjusting member to pass through. The arrangement of the first abutment surface 32, the second abutment surface 33 and the opening 331 avoids interference with the second abutment surface 33 during the operation of the first adjusting member, thereby enabling the first adjusting member and the elastic member to independently drive the mounting base 3 to move.

[0038] In some embodiments, see Appendix Figures 5-6 As shown, the mounting frame 12 is provided with at least one guide rail 121 arranged in the front-to-back direction, and the mounting base 3 is provided with a sliding groove 34 corresponding to the guide rail 121. The sliding groove 34 can move along the corresponding guide rail 121. The cooperation between the guide rail 121 and the sliding groove 34 makes the movement of the mounting base 3 more stable.

[0039] In some embodiments, the frame body 11 has roller mounting holes that correspond one-to-one with the mounting frame plate 12. The roller mounting holes include a first hole and a second hole that communicate with each other in the front-rear direction. The width of the first hole is adapted to the radial dimension of the belt tensioning roller 2, and the width of the second hole is greater than the radial dimension of the belt tensioning roller 2. The second hole facilitates the installation of the belt tensioning roller 2 on the frame 1.

[0040] The tensioning process of the embodiment is as follows:

[0041] The first screw 51 is screwed in, and then the first screw 51 moves along the frame 1 to the direction of the mounting base 3 until the first screw 51 abuts against the first abutting surface 32; the first screw 51 is continuously screwed in, and then the first screw 51 can push the first abutting surface 32 to move the mounting base 3 to a designated position; then the second nut 53 is screwed in, the spring 54 is stressed and exerts force on the second abutting surface 33 to continuously move the mounting base 3, at this time, the first screw 51 remains stationary, and a gap can be left between the first screw 51 and the first abutting surface 32 due to the continuous movement of the mounting base 3, at this time, the mounting base 3 is only subjected to the flexible force of the spring 54, and therefore the final tensioning force of the belt 4 is also flexible.

[0042] The above embodiments are only for illustrating the technical concept and characteristics of the utility model, the purpose is to let the person familiar with this technology understand the content of the utility model and implement it, and it cannot limit the protection scope of the utility model, any equivalent changes or modifications according to the spirit and essence of the utility model should be covered in the protection scope of the utility model.

Claims

1. A belt tension adjustment mechanism characterized by: The utility model relates to a belt tensioning device, which comprises a rack, a belt tensioning roller, two ends of the belt tensioning roller are respectively installed on the rack through mounting seats, the mounting seats can move back and forth along the rack, an adjusting assembly is arranged in one-to-one correspondence with the mounting seat, each adjusting assembly comprises a first adjusting part, a second adjusting part and an elastic part, the first adjusting part is arranged in the front and back direction to drive the corresponding mounting seat to move back and forth, the elastic part is sleeved on the first adjusting part, and two ends of the elastic part are respectively abutted on the corresponding mounting seat and second adjusting part, and the second adjusting part is threadedly sleeved on the first adjusting part. The mounting seat comprises a seat body, the seat body is respectively provided with a first abutting surface and a second abutting surface for abutting the first adjusting part and the elastic part, and a hole is formed in the second abutting surface for the first adjusting part to pass through. The first adjusting part comprises a first screw rod and a first nut, the first screw rod is sequentially passed through the rack and the mounting seat in the front and back direction, the first nut is threadedly sleeved on the first screw rod, and the first nut is fixedly connected with the rack. A nut end cover is fixedly connected to one end of the first screw rod away from the mounting seat.

2. The belt tension adjustment mechanism of claim 1, wherein: The second adjusting part comprises a second nut, an abutting plate for abutting the elastic part is integrally arranged on one side of the second nut facing the elastic part, and the radial dimension of the abutting plate is greater than the radial dimension of the elastic part.

3. The belt tension adjustment mechanism of claim 1, wherein: A buffer gasket is arranged between the elastic part and the mounting seat.

4. The belt tension adjustment mechanism of claim 3, wherein: The rack comprises a rack body, the rack body is provided with a mounting frame plate arranged in one-to-one correspondence with the mounting seat, and the corresponding mounting seat and adjusting assembly are located in the area surrounded by the mounting frame plate.

5. The belt tension adjustment mechanism of claim 1, wherein: At least one guide rail is arranged on the mounting frame plate in the front and back direction, and a sliding groove corresponding to the guide rail is arranged on the mounting seat, and the sliding groove can move along the corresponding guide rail.

6. The belt tension adjustment mechanism of claim 1, wherein: Roller mounting holes corresponding to the mounting frame plate are formed in the rack body, the roller mounting holes comprise a first hole and a second hole which are connected to each other in the front and back direction, the diameter of the first hole is matched with the radial dimension of the belt tensioning roller, and the diameter of the second hole is greater than the radial dimension of the belt tensioning roller.

7. The belt tension adjustment mechanism of claim 1, wherein: The elastic part is a spring, and the spring is always in a compressed state.

8. The belt tension adjustment mechanism of claim 7, wherein: ​ 9. The belt tension adjustment mechanism of claim 7, wherein: ​ 10. The belt tension adjustment mechanism of claim 1, wherein: ​

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