Tensioning device

Abstract

The utility model relates to a tensioning device which comprises a positioning cylinder, a moving rod penetrates through the top of the positioning cylinder, a hook pin is fixed to one end, located in the positioning cylinder, of the moving rod, the bottom of the hook pin extends out of the positioning cylinder, a first spring penetrates through the outside of the hook pin, and the top of the first spring abuts against the bottom of the moving rod. When a product needs to be tensioned, the limiting rod is directly pulled to move outwards, so that the limiting rod is moved out of the clamping groove in the surface of the moving rod, the moving rod is in a movable state, and the limiting rod is moved out of the clamping groove in the surface of the moving rod through the elastic force of the first spring. And when the hook pin needs to be reset, the moving rod is directly pressed downwards, so that the clamping groove of the moving rod is aligned with the limiting rod, the limiting rod can be automatically inserted into the clamping groove, and automatic limiting of the moving rod is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of automobile testing fixture, concretely to a tensioning device. BACKGROUND

[0002] The tensioning device used on the existing automobile testing fixture simulation block generally comprises a pull rod, a simulation block is sleeved on the pull rod, an adjusting sleeve is arranged above the simulation block and screwed on the pull rod, a spring is arranged between the adjusting sleeve and the simulation block and sleeved on the pull rod; a positioning block is connected below the simulation block, and the lower end of the pull rod movably extends out of the positioning block and is connected with a limiting rod.

[0003] According to the disclosed patent 202420788831.9, a tensioning device comprises a rotating shaft, a limiting sleeve is sleeved on the rotating shaft, and a limiting groove is formed in the limiting sleeve; the rotating shaft can rotate and axially move relative to the limiting sleeve; the rotating shaft is connected with a limiting pin, and the limiting pin is located in the limiting groove; the limiting sleeve is connected with a simulation block; a positioning part is arranged at the lower end of the simulation block; the lower end of the rotating shaft movably extends out of the positioning part and is connected with a hook pin; the hook pin can cooperate with the positioning part to position a product; the upper end of the rotating shaft is connected with a handle, and a spring is arranged on the rotating shaft between the handle and the top surface of the limiting sleeve. The tensioning device is convenient to operate and has a long service life.

[0004] However, in the operation of the conventional tensioning device, when the product is subjected to the tensioning operation, the operator needs to manually rotate the rotating shaft and also needs to precisely control the rotation angle of the rotating shaft by means of the interaction between the limiting pin and the limiting groove, which makes the tensioning steps of the product complicated and tedious, and for the operator, a lot of time and effort are often needed to set the tensioning state and the subsequent reset operation. Therefore, a new technical solution is needed to solve the problem. UTILITY MODEL CONTENTS

[0005] The utility model aims at overcoming the shortcomings of the prior art, adapting to the actual needs, and providing a tensioning device to solve the technical problem that in the operation of the conventional tensioning device, when the product is subjected to the tensioning operation, the operator needs to manually rotate the rotating shaft and also needs to precisely control the rotation angle of the rotating shaft by means of the interaction between the limiting pin and the limiting groove, which makes the tensioning steps of the product complicated and tedious, and for the operator, a lot of time and effort are often needed to set the tensioning state and the subsequent reset operation.

[0006] In order to realize the purpose of the utility model, the technical scheme that the utility model adopts is: a tensioning device is designed, which comprises a positioning cylinder, a moving rod penetrates through the top of the positioning cylinder, one end of the moving rod in the positioning cylinder is fixed with a hook pin, the bottom of the hook pin extends out of the positioning cylinder, a first spring penetrates through the outside of the hook pin, the top of the first spring abuts against the bottom of the moving rod;

[0007] The two sides of one end of the moving rod in the positioning cylinder are both provided with clamping grooves, and a clamping assembly is arranged in the clamping grooves.

[0008] Preferably, the clamping assembly comprises a round hole, a fixing cylinder, a limiting rod, a pulling block, a moving plate and a second spring.

[0009] Preferably, the round hole is arranged at the top of the two sides of the positioning cylinder, the fixing cylinder is arranged in the round hole, the limiting rod penetrates through the inside of the fixing cylinder, the one end of the limiting rod in the fixing cylinder penetrates through the moving plate and the second spring, and the penetration positions of the moving plate and the limiting rod are fixed.

[0010] Preferably, the one side of the moving plate is fixed with the second spring, and the one end of the second spring away from the moving plate is fixed with the fixing cylinder.

[0011] Preferably, the one end of the limiting rod extending out of the fixing cylinder is inserted into the clamping groove to limit the moving rod, and the other end of the limiting rod extending out of the fixing cylinder is fixed with the pulling block.

[0012] Preferably, the top of the positioning cylinder is provided with limiting grooves on the two sides, one end of a limiting plate is clamped in the limiting grooves, the other end of the limiting plate is fixed with the moving rod, and a distance scale is printed on the side surface of the limiting plate.

[0013] Compared with the prior art, the utility model has the beneficial effects that:

[0014] 1. The utility model discloses a moving rod, a clamping groove and a clamping assembly can be combined, when the product needs to be tensioned, the limiting rod can be directly pulled to move outward, so that the limiting rod moves out of the clamping groove on the surface of the moving rod, the moving rod is in a movable state, under the elastic force of the first spring, the moving rod and the hook pin are lifted, thereby the product is tensioned, when the hook pin needs to be reset, the moving rod is directly pressed downward, the clamping groove position of the moving rod is aligned with the limiting rod, the limiting rod can be automatically inserted into the clamping groove, the automatic limiting of the moving rod is realized, and the technical problem that in the operation of the traditional tensioning device, the operator needs to manually rotate the rotating shaft, and also needs to accurately control the rotation angle of the rotating shaft by the interaction of the limiting pin and the limiting groove is solved.

[0015] 2. The utility model discloses a combination of moving rod, limiting plate and distance scale, which can not only utilize the limiting plate to be clamped in the limiting groove to limit the position of the moving rod and hook pin, avoid the shaking of the moving rod and hook pin in the process of tensioning, but also set distance scale on the surface of the limiting plate, so that the moving rod can drive the limiting plate to move up in the process of tensioning, and the staff can judge the current tensioning distance data according to the distance scale on the surface of the limiting plate. BRIEF DESCRIPTION OF DRAWINGS

[0016] Fig. 1 It is the whole structure schematic diagram of the utility model;

[0017] Fig. 2 It is the internal structure schematic diagram of the utility model.

[0018] In the figure: 1, positioning cylinder; 101, moving rod; 102, hook pin; 2, round hole; 201, fixed cylinder; 202, limiting rod; 203, pull block; 204, moving plate; 205, clamping groove; 206, first spring; 207, second spring; 3, limiting groove; 301, limiting plate; 302, distance scale. DETAILED DESCRIPTION

[0019] The utility model is further illustrated below in combination with the drawings and examples:

[0020] Example 1: a tensioning device, refer to Figs. 1-2, including positioning cylinder 1, the top of positioning cylinder 1 is penetrated by moving rod 101, one end of moving rod 101 located in positioning cylinder 1 is fixed with hook pin 102, the bottom of hook pin 102 extends out of positioning cylinder 1, the outside of hook pin 102 is penetrated by first spring 206, the top of first spring 206 abuts against the bottom of moving rod 101; both sides of one end of moving rod 101 located in positioning cylinder 1 are provided with clamping groove 205, clamping groove 205 is provided with clamping assembly inside, when it is needed to tighten the product, both sides of pulling block 203 are pulled by hand at the same time, pulling block 203 will drive moving rod 101 to move, moving rod 101 will drive moving plate 204 to extrude second spring 207 in the process of moving, so that limiting rod 202 is separated from clamping groove 205 on both sides of moving rod 101, after limiting rod 202 moves out of clamping groove 205, through the elastic force of first spring 206, moving rod 101 will move upwards, moving rod 101 will drive hook pin 102 to move upwards, so that the product on the surface of hook pin 102 is tightened, when it is needed to reset hook pin 102, moving rod 101 can be directly pressed downwards, the position of clamping groove 205 of moving rod 101 is aligned with limiting rod 202, through the elastic force of second spring 207, moving plate 204 and limiting rod 202 will directly enter clamping groove 205, automatically make limiting rod 202 inserted into clamping groove 205, realize the automatic limiting of moving rod 101, solve the technical problem that in the operation of traditional tightening device, the operator needs to manually rotate rotating shaft, and also needs to accurately control the rotation angle of rotating shaft by the interaction of limiting pin and limiting groove 3, this process makes the steps of product tightening complicated and tedious, for the operator, a lot of time and energy are often needed to set the tightening state and subsequent reset operation.

[0021] Specifically, referring to Fig. 2 , the clamping assembly comprises round hole 2, fixed cylinder 201, limiting rod 202, pulling block 203, moving plate 204 and second spring 207.

[0022] Further, referring to Fig. 2 , round hole 2 is provided on both sides of the top of positioning cylinder 1, fixed cylinder 201 is installed inside round hole 2, limiting rod 202 penetrates through the inside of fixed cylinder 201, one end of limiting rod 202 located in fixed cylinder 201 penetrates through moving plate 204 and second spring 207, and the penetration positions of moving plate 204 and limiting rod 202 are fixed.

[0023] It is worth noting that, referring to Fig. 2 , second spring 207 is fixed on one side of moving plate 204, one end of second spring 207 away from moving plate 204 is fixed with fixed cylinder 201.

[0024] It is worth noting that, referring to Fig. 2The end of the limiting rod 202 extending into the fixed cylinder 201 is inserted into the clamping groove 205 to limit the movement of the moving rod 101, and the other end of the limiting rod 202 extending into the fixed cylinder 201 is fixed with a pulling block 203.

[0025] It is worth mentioning that, referring to Fig. 2 The top of the positioning cylinder 1 is provided with a limiting slot 3 on each side, the limiting slot 3 is clamped with one end of a limiting plate 301, the other end of the limiting plate 301 is fixed with a moving rod 101, and a distance scale 302 is printed on the side surface of the limiting plate 301; the limiting plate 301 is clamped in the limiting slot 3, so that the positions of the moving rod 101 and the hook pin 102 can be limited, the moving rod 101 and the hook pin 102 are prevented from shaking during the tensioning process, and the distance scale 302 is arranged on the surface of the limiting plate 301, so that the distance data of the current tensioning can be judged according to the distance scale 302 on the surface of the limiting plate 301 during the tensioning process.

[0026] During the use of the tensioning device, when the product needs to be tensioned, the pulling blocks 203 on both sides are pulled by hands at the same time, the pulling blocks 203 drive the moving rod 101 to move, the moving rod 101 drives the moving plate 204 to press the second spring 207 during the movement, so that the limiting rod 202 is separated from the clamping grooves 205 on both sides of the moving rod 101, after the limiting rod 202 is moved out of the clamping grooves 205, the moving rod 101 is driven to move upwards by the elastic force of the first spring 206, the moving rod 101 drives the hook pin 102 to move upwards, so that the product on the surface of the hook pin 102 is tensioned, when the hook pin 102 needs to be reset, the moving rod 101 can be directly pressed downwards, so that the clamping groove 205 of the moving rod 101 is aligned with the limiting rod 202, the moving plate 204 and the limiting rod 202 are driven to enter the clamping groove 205 by the elastic force of the second spring 207, the limiting rod 202 is automatically inserted into the clamping groove 205, the automatic limiting of the moving rod 101 is realized, the limiting plate 301 is clamped in the limiting slot 3, so that the positions of the moving rod 101 and the hook pin 102 can be limited, the moving rod 101 and the hook pin 102 are prevented from shaking during the tensioning process, and the distance scale 302 is arranged on the surface of the limiting plate 301, so that the distance data of the current tensioning can be judged according to the distance scale 302 on the surface of the limiting plate 301 during the tensioning process.

[0027] In addition, the components designed in the utility model are all general standard components or components known by the person skilled in the art, the structure and principle of which can be known by the person skilled in the art through a technical manual or through a conventional experimental method, and the person skilled in the art can realize it completely, and it is needless to say, and the content protected by the utility model does not involve improvement of the internal structure and method.

[0028] The embodiments of the present application disclose the preferred embodiments, but are not limited to the same, and the ordinary skilled in the art can easily understand the spirit of the present application according to the above-mentioned embodiments, and make different inferences and changes, as long as the spirit of the present application is not deviated, which are within the protection scope of the present application.

Claims

1. A tensioning device comprising a positioning cylinder (1), characterized in that, The mobile rod (101) is provided with a hook pin (102) at one end inside the positioning cylinder (1), the hook pin (102) is extended to the inside of the positioning cylinder (1), the hook pin (102) is provided with a first spring (206) outside, the top of the first spring (206) is abutted against the bottom of the mobile rod (101); The mobile rod (101) is provided with a clamping groove (205) at both sides of one end inside the positioning cylinder (1), and the clamping groove (205) is provided with a clamping assembly inside.

2. The tensioning device of claim 1, wherein, The clamping assembly comprises a round hole (2), a fixed cylinder (201), a limiting rod (202), a pull block (203), a moving plate (204) and a second spring (207).

3. The tensioning device of claim 2, wherein, The round hole (2) is provided at the top of both sides of the positioning cylinder (1), the round hole (2) is provided with the fixed cylinder (201) inside, the fixed cylinder (201) is provided with the limiting rod (202) inside, the limiting rod (202) is provided with the moving plate (204) and the second spring (207) at one end inside the fixed cylinder (201), and the penetration position of the moving plate (204) and the limiting rod (202) is fixed.

4. The tensioning device of claim 2, wherein, The moving plate (204) is provided with the second spring (207) at one side, and the second spring (207) is provided with the fixed cylinder (201) at the end away from the moving plate (204).

5. The tensioning device of claim 2, wherein, The limiting rod (202) is inserted into the clamping groove (205) at one end extended into the fixed cylinder (201), and the mobile rod (101) is limited, and the other end of the limiting rod (202) extended into the fixed cylinder (201) is provided with the pull block (203).

6. The tensioning device of claim 1, wherein, The positioning cylinder (1) is provided with a limiting groove (3) at the top of both sides, the limiting groove (3) is clamped with one end of the limiting plate (301) inside, the other end of the limiting plate (301) is provided with the mobile rod (101), and the side surface of the limiting plate (301) is marked with a distance scale (302).

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