Belt wheel tensioning device

Abstract

The utility model relates to the technical field of transmission belt tensioning equipment, in particular to a belt wheel tensioning device which comprises an installation piece, a blocking piece and an elastic piece. The stop piece is arranged on the first end part; the elastic piece is arranged on the first end portion, the blocking piece and the elastic piece are sequentially arranged in the first direction, the first direction is the direction along the installation piece and pointing to the first end portion from the second end portion, and the blocking piece blocks the elastic piece to extend in the second direction. According to the belt wheel tensioning device, the second end abuts against the fixed belt wheel, the belt wheel to be adjusted is moved to the preset position and locked through thrust generated after the elastic piece is compressed, and belt wheel tensioning is achieved. According to the device, it is ensured that tensioning force borne by all the belt wheel sets is consistent, and the matching degree is improved. The elastic piece does not need to be adjusted in the operation process, and operation efficiency is improved. Meanwhile, the device is suitable for adjusting multiple sets of belt wheels, each set of belt wheels does not need to be independently arranged, and the equipment cost is reduced.

Description

Technical Field

[0001] This application relates to the field of belt tensioning equipment technology, and more specifically, to a pulley tensioning device. Background Technology

[0002] Chemiluminescence immunoassay analyzers are high-precision immunodiagnostic instruments. They utilize numerous belt-driven mechanisms, and proper belt tension is crucial to ensure these belts operate with high accuracy and long lifespan.

[0003] Currently, most belt tension adjustments rely on manual tensioning by operators, which makes it difficult to ensure consistent belt tension, leading to reduced fit and accuracy between pulley sets. Furthermore, the tension adjustment process requires repeated adjustments many times, resulting in low work efficiency and long working hours. Utility Model Content

[0004] The purpose of this application is to provide a pulley tensioning device that can improve pulley tensioning efficiency, ensure the consistency of tension between each pulley group, and improve the fit between each pulley group.

[0005] To achieve the above objectives, this application provides a pulley tensioning device, including a mounting member, a stop member, and an elastic member. The two ends of the mounting member are a first end and a second end, respectively. The stop member is disposed on the first end. The elastic member is capable of telescoping and rebounding. The elastic member is disposed on the first end, and the stop member and the elastic member are arranged sequentially along a first direction, which is a direction along the mounting member pointing from the second end to the first end. The stop member prevents the elastic member from extending along a second direction, which is the opposite of the first direction.

[0006] In one embodiment, the pulley tensioning device further includes a first pushing member, which is slidably mounted on the first end. The stop member, the elastic member, and the first pushing member are sequentially arranged on the mounting member along the first direction, and the elastic member applies a force to the first pushing member along the first direction.

[0007] In one embodiment, the pulley tensioning device further includes a first handle and a second handle, wherein the first handle is fixedly disposed on the first pusher member; and the second handle is fixedly disposed on the second end.

[0008] In one embodiment, the pulley tensioning device further includes a push-pull handle, which comprises a base, a first hinge portion, and a second hinge portion. The base is disposed on the first end, and the base and the elastic member are distributed sequentially along the first direction; the two ends of the first hinge portion are a hinge end and a gripping end, respectively, and the hinge end is hingedly mounted on the base; one end of the second hinge portion is hingedly connected to the first pushing member, and the other end of the second hinge portion is hingedly connected between the hinge end and the gripping end of the first hinge portion.

[0009] In one embodiment, the push-pull handle further includes a fixed handle, which is fixedly disposed on the base, and the fixed handle and the first hinge portion are sequentially distributed on the base along the first direction.

[0010] In one embodiment, the elastic member is disposed along the first direction, and the two ends of the elastic member are a pushing end and an abutting end, respectively. The abutting end and the pushing end are distributed sequentially along the first direction, and the abutting end abuts against the stop member. The stop member includes an adjusting part, which is mounted on a first end. The position of the adjusting part on the first end can be adjusted along the first direction or the second direction.

[0011] In one embodiment, the adjusting part is an adjusting nut, and an external thread is provided on all / part of the outer peripheral surface of the first end. The adjusting nut engages with the external thread on the first end. Rotating the adjusting nut in both directions allows the adjusting nut to reciprocate along the first direction. The position of the abutting end of the elastic member is adjusted by adjusting the position of the adjusting nut on the first end.

[0012] In one embodiment, the stop further includes a locking nut, which is disposed on the first end and engages with the external thread on the first end. The locking nut and the adjusting nut are sequentially disposed on the first end along the first direction.

[0013] In one embodiment, the stop further includes a spacer ring sleeved on the first end and disposed between the elastic member and the adjusting nut.

[0014] In one embodiment, the pulley tensioning device further includes a second pushing member, which is mounted on the second end. The second pushing member is threadedly engaged with the second end.

[0015] The above technical solution involves abutting the second end of the mounting component against the fixed pulley or other fixed position to compress the elastic element. Then, the end of the elastic element away from the stop component pushes the pulley to be adjusted, releasing the elastic element. The elastic element then applies a force to the pulley to be adjusted, causing it to move to a preset position after being pushed by the elastic element, locking the pulley and completing the pulley tensioning. The pulley tensioning device provided in this embodiment is then removed from the pulley to perform tensioning operations on the next set of pulleys. Since the force of the elastic element is consistent, the degree of tension adjustment for each pulley group is consistent, improving the coordination between pulley groups. During the tensioning process, the operator does not need to adjust the elasticity of the elastic element, resulting in high work efficiency. Furthermore, the pulley tensioning device provided in this application can adjust different sets of pulleys, eliminating the need to equip each set of pulleys with a tensioning device, thus saving equipment costs.

[0016] Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of one embodiment of a pulley tensioning device provided in this application.

[0019] Figure 2 This is a two-view structural schematic diagram of another embodiment of a pulley tensioning device provided in this application.

[0020] Figure 3 This is a three-view structural schematic diagram of another embodiment of a pulley tensioning device provided in this application.

[0021] icon:

[0022] 100 - Mounting component; 110 - First end; 120 - Second end; 130 - First direction;

[0023] 200 - Stop; 210 - Adjusting nut; 220 - Locking nut; 230 - Spacer ring;

[0024] 300 - Elastic element; 310 - Pushing end; 320 - Abutting end;

[0025] 400 - First pusher component; 410 - Contour end face; 450 - Second pusher component;

[0026] 500 - Push-pull handle; 510 - Base; 520 - First hinge; 530 - Second hinge; 540 - Fixed handle;

[0027] 600 - First handle; 610 - Second handle. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0029] In the description of this application, it should be noted that the terms "inner" and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are used only for the convenience of describing this application and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0030] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "setup" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0031] like Figure 1 As shown, an embodiment of this application provides a pulley tensioning device, including a mounting member 100, a stop member 200, and an elastic member 300.

[0032] For example, the mounting component 100 provides a mounting base for components such as the stop 200 and the elastic component 300.

[0033] For example, the mounting member 100 is a rod structure arranged in a straight line. In another embodiment, the mounting member 100 is a rod structure with curvature. In another embodiment, the mounting member 100 is a plate structure arranged in a straight line. In yet another embodiment, the mounting member 100 is a plate structure with curvature.

[0034] like Figure 1As shown, the two ends of the mounting component 100 are the first end 110 and the second end 120, respectively.

[0035] like Figure 1 As shown, the stop 200 is disposed on the first end 110; exemplaryly, the stop 200 is fixedly mounted on the mounting member 100. In another embodiment, the stop 200 is detachably mounted on the first end 110.

[0036] like Figure 1 As shown, the elastic element 300 is capable of stretching and rebounding. The elastic element 300 is disposed on the first end 110, and the stop 200 and the elastic element 300 are disposed sequentially along the first direction 130. The first direction 130 is along the mounting member 100 and points from the second end 120 to the first end 110.

[0037] The stop 200 stops the elastic member 300 from extending in a second direction, which is opposite to the first direction 130.

[0038] For example, the elastic element 300 includes, but is not limited to: helical spring, butterfly spring, ring spring, leaf spring, steel leaf spring, rubber spring, air spring, etc.

[0039] For example, during the tensioning of the pulley, the second end 120 of the mounting member 100 abuts against the fixed pulley or against other fixed positions, compressing the elastic member 300. Then, the end of the elastic member 300 away from the stop member 200 pushes the pulley to be adjusted, releasing the elastic member 300. The elastic member 300 applies a force to the pulley to be adjusted, causing the pulley to move to a preset position after being pushed by the elastic member 300, locking the pulley and completing the pulley tensioning. Then, the pulley tensioning device provided in this embodiment is removed from the pulley, and the next group of pulleys is tensioned. The force of the elastic member 300 is consistent, so the degree of tension adjustment of each pulley group is consistent, improving the coordination between each pulley group. During the tensioning process, the operator does not need to adjust the elasticity of the elastic member 300, resulting in high work efficiency. Moreover, the pulley tensioning device provided in this application can adjust different groups of pulleys, eliminating the need to equip each group of pulleys with a tensioning device, thus saving equipment costs. If it is necessary to adjust the force exerted by the elastic element 300 on the pulley, simply move the stop element 200 along the first direction 130 (increasing the force exerted by the elastic element 300 on the pulley) or move the stop element 200 along the second direction (decreasing the force exerted by the elastic element 300 on the pulley).

[0040] like Figure 1As shown, in one embodiment, the pulley tensioning device further includes a first pusher 400, which is slidably mounted on a first end 110 and is movable on the first end 110 along a first direction 130 or a second direction.

[0041] like Figure 1 As shown, the stop 200, elastic element 300, and first pusher 400 are sequentially arranged on the mounting member 100 along the first direction 130. The elastic element 300 applies a force to the first pusher 400 along the first direction 130. The first pusher 400 pushes the pulley to be adjusted, and the elastic element 300 pushes the pulley to be adjusted through the first pusher 400 to perform the pulley tensioning operation. By setting the first pusher 400 to replace the elastic element 300 in contacting the pulley to be adjusted, the contact area between the pulley tensioning device and the pulley to be adjusted is increased, slippage is reduced, and reliability and working efficiency are improved.

[0042] For example, the first pusher 400 is provided with an annular groove, and a retaining ring is fixedly provided on the first end 110 of the mounting member 100. The retaining ring is slidably installed in the annular groove, and the side wall of the annular groove restricts the retaining ring from sliding out of the annular groove, thereby preventing the first pusher 400 from slipping off the first end 110.

[0043] In one embodiment, the end face of the first pusher 400 away from the elastic member 300 is a contoured end face 410, which matches the contact surface of the pulley to be adjusted. The contoured end face 410 increases the contact area between the first pusher 400 and the pulley to be adjusted.

[0044] The first pusher 400 is provided with a contoured end face 410, which makes the contact between the first pusher 400 and the pulley to be adjusted tighter, preventing the first pusher 400 from slipping off the pulley. Due to the increased contact area, the pushing force can be more effectively dispersed, reducing local stress concentration, thereby improving the stability and durability of the entire device.

[0045] In another embodiment, the second pusher 450 is also provided with a contoured end face 410. The contoured end face 410 of the second pusher 450 is provided on the end face away from the second end 120. The contoured end face 410 matches the contact surface of the fixed pulley or other fixed position that the second pusher 450 needs to abut against.

[0046] Exemplarily, in one embodiment, such as Figure 2As shown, a first handle 600 is provided on the first pushing member 400, and a second handle 610 is fixedly provided on the second end 120. By reciprocatingly pulling the first pushing member 400 through the first handle 600, the elastic member 300 can be compressed or extended. The first handle 600 facilitates the operator in compressing the elastic member. During use, the operator can hold the first handle 600 with one hand and the second handle 610 with the other hand, bringing the first handle 600 closer to the second handle 610. The elastic member 300 is compressed after being subjected to the force applied by the first pushing member 400.

[0047] For example, the first handle 600 is fixedly mounted on the first pusher 400 by means of welding, bolting, snap-fitting, gluing, or riveting. For example, the second handle 610 is fixedly mounted on the second end 120 by means of welding, bolting, snap-fitting, gluing, or riveting. In other embodiments, a base 510 is fixedly mounted on the second end 120, and the second handle 610 is fixedly mounted on the base 510, and the fixing methods include, but are not limited to, welding, bolting, snap-fitting, gluing, or riveting.

[0048] like Figure 1 As shown, unlike the first handle 600 and the second handle 610 provided in the above embodiments, in another embodiment, the pulley tensioning device further includes a push-pull handle 500. The push-pull handle 500 is used to push or pull back the first push member 400. Before the pulley tensioning device of this application needs to be installed on the pulley group to be adjusted, the first push member 400 is pulled back by the push-pull handle 500, so that the first push member 400 moves in the second direction and the elastic member 300 is compressed. Then, the pulley tensioning device is installed on the pulley group to be adjusted. The push-pull handle 500 is pushed so that the first push member 400 moves in the first direction 130. At the same time, the elastic member 300 pushes the first push member 400. The push-pull handle 500 is released so that the first push member 400 is only subjected to the force applied by the elastic member 300.

[0049] The push-pull handle 500 includes a base 510, a first hinge portion 520, and a second hinge portion 530.

[0050] The base 510 is disposed on the first end 110, and the base 510 and the elastic member 300 are distributed sequentially along the first direction 130. For example, the base 510 is fixedly disposed on the first end 110 of the mounting member 100 by means of welding, snap-fitting, gluing, riveting or bolting.

[0051] The first hinge portion 520 has a hinge end and a gripping end at its two ends, respectively. The hinge end is hingedly mounted on the base 510. The gripping end provides a gripping area for the operator. The operator pushes the gripping end to rotate around the hinge end, thereby causing the first hinge portion 520 to rotate on the base 510.

[0052] One end of the second hinge portion 530 is hinged to the first push member 400, and the other end of the second hinge portion 530 is hinged between the hinge end and the gripping end of the first hinge portion 520. The first hinge portion 520 reciprocates on the base 510, causing the second hinge portion 530 to reciprocate. The reciprocating movement of the second hinge portion 530 causes the first push member 400 to move along the first direction 130 or along the second direction on the mounting member 100.

[0053] During use, before tensioning the pulley, preparatory work is performed. The operator holds the grip end and pushes it to rotate forward around the hinge end, causing the first hinge part 520 to rotate forward on the base 510. The forward rotation of the first hinge part 520 drives the second hinge part 530 to move closer to the base 510. The movement of the second hinge part 530 causes the first pusher 400 to move along the second direction on the mounting part 100, compressing the elastic element 300. The push-pull handle 500 has a dead point, locking the push-pull handle 500 and keeping the elastic element 300 in a compressed state. After the preparatory work is completed, the pulley tensioning device is installed on the pulley to be adjusted. The first pusher 400... The shaped end face 410 abuts against the adjustable pulley. The operator holds the grip end and pushes the grip end to rotate around the hinge end, thereby causing the first hinge part 520 to rotate in the opposite direction around the base 510. The reverse rotation of the first hinge part 520 causes the second hinge part 530 to move away from the base 510. The movement of the second hinge part 530 causes the first pusher 400 to move along the first direction 130 on the mounting part 100. The elastic member 300 extends. The operator releases the grip end, so that the first pusher 400 is only subjected to the force of the elastic member 300. Under the action of the elastic member 300, the first pusher 400 pushes the pulley to be adjusted, so that the pulley to be adjusted reaches the preset position, and then the pulley is locked.

[0054] Finally, the operator pushes the gripping end to rotate forward around the hinge end, causing the first hinge part 520 to rotate forward on the base 510. The forward rotation of the first hinge part 520 causes the second hinge part 530 to move closer to the base 510. The movement of the second hinge part 530 causes the first pusher 400 to move along the second direction, causing the first pusher 400 to disengage from the pulley, thereby allowing the pulley tensioning device to be removed from the pulley assembly.

[0055] The push-pull handle 500 allows operators to easily control the movement of the first jacking component 400, thereby tensioning and loosening the pulley. This design reduces the complexity of manual operation and improves work efficiency.

[0056] like Figure 1 As shown, in one embodiment, the elastic member 300 is disposed along the first direction 130, and the two ends of the elastic member 300 are a pushing end 310 and an abutting end 320, respectively. The abutting end 320 and the pushing end 310 are distributed sequentially along the first direction 130, and the abutting end 320 abuts against the stop member 200.

[0057] The stop member 200 includes an adjustment part, which is mounted on the first end 110. The position of the adjustment part on the first end 110 can be adjusted along the first direction 130 or the second direction. By moving the adjustment part, the magnitude of the tensioning force of the pulley can be adjusted.

[0058] In one embodiment, the adjusting part is an adjusting nut 210, and an external thread is provided on a portion of the outer peripheral surface of the first end 110. The adjusting nut 210 engages with the external thread on the first end 110. In some embodiments, external threads are provided on the entire outer peripheral surface of the first end 110.

[0059] Rotating the adjusting nut 210 in both directions allows it to reciprocate along the first direction 130 (i.e., move the adjusting nut 210 along the first direction 130 or the second direction). By adjusting the position of the adjusting nut 210 on the first end 110, the position of the abutting end 320 of the elastic member 300 is adjusted, thereby adjusting the magnitude of the force exerted by the elastic member 300 on the first pushing member 400, so as to adjust the magnitude of the tensioning force of the pulley.

[0060] By adjusting the external thread engagement between the adjusting nut 210 and the first end 110, the position of the abutment end 320 of the elastic element 300 can be precisely adjusted. This adjustment method allows the operator to finely adjust the tension force of the pulley as needed, ensuring that the pulley reaches the ideal tension state.

[0061] The design of the adjusting nut 210 allows the operator to easily switch between forward and reverse rotation, thereby enabling the adjusting nut 210 to reciprocate along the first direction 130. This flexibility allows the device to adapt to pulley assemblies of different specifications and requirements, improving the applicability of the device.

[0062] The threaded engagement between the adjusting nut 210 and the first end 110 has high stability, ensuring that the position of the adjusting nut 210 will not move unexpectedly during the adjustment process, thereby ensuring the stability of the pulley tension.

[0063] like Figure 1 As shown, in one embodiment, the stop 200 further includes a locking nut 220, which is disposed on the first end 110 and engages with the external thread on the first end 110. The locking nut 220 and the adjusting nut 210 are sequentially disposed on the first end 110 along a first direction 130. The locking nut 220 can limit the position of the adjusting nut 210 along a second direction, thereby improving reliability.

[0064] The locking nut 220 provides additional stability to the entire stop 200. Once the adjusting nut 210 is adjusted to the appropriate position, tightening the locking nut 220 secures it to the first end 110, preventing the adjusting nut 210 from loosening or shifting due to vibration or other external factors during operation, thereby ensuring the stability of the pulley tension.

[0065] like Figure 1 As shown, in one embodiment, the stop member 200 further includes a spacer ring 230, which is sleeved on the first end 110 and disposed between the elastic member 300 and the adjusting nut 210.

[0066] The spacer 230 optimizes the force distribution between the elastic element 300 and the adjusting nut 210. During adjustment, the elastic element 300 may exert a certain reaction force on the adjusting nut 210, and the spacer 230, as a buffer layer, can disperse these forces, reduce local stress concentration, and thus protect the adjusting nut 210 and the first end 110 from damage.

[0067] The spacer 230 can also isolate the friction between the adjusting nut 210 and the elastic element 300, reduce the wear of the adjusting nut 210 and the elastic element 300, and prevent the elastic element 300 from directly contacting the elastic element 300 and the adjusting nut 210, thus preventing the elastic element 300 from being damaged or deformed during the rotation of the adjusting nut 210.

[0068] In another embodiment, the technical solution of adjusting part being adjusting nut 210 in the above embodiment can be replaced by the following technical solution: the adjusting part is a limiting block, the limiting block pushes the elastic member 300, and the relative position of the limiting block on the mounting member 100 is as follows: Figure 1 At the location of the adjusting nut 210, multiple limiting holes are provided on the first end 110. The multiple limiting holes are distributed along the first direction 130. A limiting pin is fixedly provided on the limiting block. The limiting pin is inserted into the limiting hole. By inserting the limiting pin into different limiting holes, the limiting block can be adjusted to different positions to achieve the adjustment of the tension force of the pulley.

[0069] like Figure 1 As shown, in one embodiment, the pulley tensioning device further includes a second pushing member 450, which is mounted on the second end 120. During use, the second pushing member 450 replaces the second end 120 in contact with the fixedly mounted pulley or other fixed position, increasing the contact area and improving friction, thereby preventing the second end 120 from slipping and improving reliability.

[0070] like Figure 1As shown, in one embodiment, the second pusher 450 is threadedly engaged with the second end 120. Rotating the second pusher 450 can finely adjust the position of the second pusher 450 on the second end 120, thereby finely adjusting the length of the second end 120 and increasing adaptability.

[0071] The operator can precisely control the rotation of the second pusher 450 to make minute adjustments to the length of the second end 120. This fine-tuning capability helps ensure that the mechanical structure maintains stable performance and accurate positioning during operation.

[0072] In one embodiment, the first end 110 and the second end 120 are detachably connected; exemplaryly, the first end 110 and the second end 120 are threaded together. In another embodiment, the first end 110 and the second end 120 are snap-fitted together. In yet another embodiment, the first end 110 and the second end 120 are transition-fitted together.

[0073] Depending on the pulley group with different center distances, the second end 120 of different lengths can be replaced, increasing the adaptability of the pulley tensioning device in this embodiment.

[0074] Exemplarily, in another embodiment, such as Figure 3 As shown, a fixed handle 540 is provided on the base 510. The fixed handle 540 is fixedly disposed on the base 510. For example, the fixed handle 540 is fixedly disposed on the base 510 by means of welding, snap-fitting, bolting or gluing.

[0075] The fixed handle 540 and the first hinge portion 520 are distributed sequentially along the first direction 130.

[0076] During use, the operator holds the fixed handle 540 and the first hinge 520, and rotates the first hinge 520 toward the fixed handle 540, which compresses the elastic element 300.

[0077] It should be noted that, where there is no conflict, the features in the embodiments of this application can be combined with each other.

[0078] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A pulley tensioning device, characterized in that, include: Mounting member (100), the two ends of which are a first end (110) and a second end (120), respectively; A stop (200) is disposed on the first end (110); An elastic element (300) is provided on the first end (110), and the stop (200) and the elastic element (300) are arranged sequentially along a first direction (130), the first direction (130) being the direction along the mounting member (100) and pointing from the second end (120) to the first end (110), the stop (200) preventing the elastic element (300) from extending along a second direction, the second direction being the opposite of the first direction (130).

2. The pulley tensioning device according to claim 1, characterized in that, Also includes: The first pusher (400) is slidably mounted on the first end (110). The stop (200), the elastic member (300) and the first pusher (400) are sequentially arranged on the mounting member (100) along the first direction (130). The elastic member (300) applies a force to the first pusher (400) along the first direction (130).

3. The pulley tensioning device according to claim 2, characterized in that, Also includes: The first handle (600) is fixedly mounted on the first pusher (400); The second handle (610) is fixedly mounted on the second end (120).

4. The pulley tensioning device according to claim 2, characterized in that, Also includes: A push-pull handle (500), the push-pull handle (500) comprising: A base (510) is disposed on the first end (110), and the base (510) and the elastic member (300) are distributed sequentially along the first direction (130); The first hinge part (520) has a hinge end and a gripping end at its two ends, and the hinge end is hingedly mounted on the base (510). The second hinge (530) has one end hinged to the first push member (400), and the other end hinged between the hinge end and the gripping end of the first hinge (520).

5. The pulley tensioning device according to claim 4, characterized in that, The push-pull handle (500) also includes: A fixed handle (540) is fixedly mounted on the base (510). The fixed handle (540) and the first hinge (520) are sequentially distributed on the base (510) along the first direction (130).

6. The pulley tensioning device according to any one of claims 1 to 5, characterized in that, The elastic member (300) is arranged along the first direction (130), and the two ends of the elastic member (300) are a pushing end (310) and an abutting end (320) respectively. The abutting end (320) and the pushing end (310) are distributed sequentially along the first direction (130), and the abutting end (320) abuts against the stop member (200). The stop (200) includes: An adjustment part is installed on a first end (110), and the position of the adjustment part on the first end (110) can be adjusted along the first direction (130) or the second direction.

7. The pulley tensioning device according to claim 6, characterized in that, The adjusting part is an adjusting nut (210). The outer circumferential surface of the first end (110) is provided with external threads. The adjusting nut (210) engages with the external threads on the first end (110). Rotating the adjusting nut (210) in both directions allows the adjusting nut (210) to reciprocate along the first direction (130). By adjusting the position of the adjusting nut (210) on the first end (110), the position of the abutting end (320) of the elastic member (300) can be adjusted.

8. The pulley tensioning device according to claim 7, characterized in that, The stop (200) further includes: A locking nut (220) is disposed on the first end (110) and engages with the external thread on the first end (110). The locking nut (220) and the adjusting nut (210) are disposed sequentially on the first end (110) along the first direction (130).

9. The pulley tensioning device according to claim 8, characterized in that, The stop (200) further includes: Spacer (230) is sleeved on the first end (110) and is disposed between the elastic member (300) and the adjusting nut (210).

10. The pulley tensioning device according to claim 1, characterized in that, Also includes: The second pusher (450) is mounted on the second end (120); The second pusher (450) is threadedly engaged with the second end (120).

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