Pipe fitting dismounting and mounting device

Abstract

The utility model belongs to the technical field of pipe fitting dismounting, and discloses a pipe fitting dismounting device which is applied to a quick-insertion type pipe joint and comprises a clamping assembly, a plug pin assembly and a pressing assembly. The bolt assembly is arranged on the clamping assembly, and the clamping assembly is used for clamping the quick-insertion type pipe joint; the end, away from the clamping assembly, of the plug pin assembly is movably connected with the pressing assembly, the pressing assembly ascends and descends relative to the clamping assembly through the plug pin assembly, and the pressing assembly is used for pressing an elastic clamping ring on the quick-insertion type pipe joint. Therefore, according to the device, the elastic clamping ring is pressed through the pressing assembly, the fingers of an operator do not need to make direct contact with the elastic clamping ring, the risk that the fingers are pinched in the operation process is reduced, the safety of the operator is guaranteed, meanwhile, pressure borne by the hands of the operator when the elastic clamping ring is pressed is greatly relieved, premature fatigue of the hands is effectively avoided, and the safety of the operator is improved. And the working efficiency and quality are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to pipe fitting dismounting technical field, especially a pipe fitting dismounting device. BACKGROUND

[0002] In industrial production and various mechanical equipment operation, hydraulic system plays a vital role, and the hydraulic pipe is widely applied through the quick plug type pipe joint to realize the quick connection mode, in the actual maintenance or replacement process of the hydraulic pipe, the existing dismounting mode is that the staff needs to hold the hydraulic pipe with one hand, and holds the quick plug type pipe joint with the other hand, and simultaneously uses the finger of the hand holding the quick plug type pipe joint to press the elastic snap ring on the pipe joint, and then pulls out the hydraulic pipe, but in the operation process, since the finger directly contacts the elastic snap ring, there is the risk of being clamped by the elastic snap ring, the safety cannot be guaranteed, in addition, long -term repetition of such delicate and laborious action, easy to make the staff hand fatigue, further influence work quality and progress. SUMMARY

[0003] The main purpose of the utility model is to provide a pipe fitting dismounting device, which aims to solve the technical problems of the risk of finger injury by the elastic snap ring on the quick plug type pipe joint and hand fatigue affecting work efficiency and quality during the dismounting of the existing hydraulic pipe.

[0004] In order to realize the above-mentioned utility model purpose, the utility model provides a pipe fitting dismounting device, which is applied to the quick plug type pipe joint, and comprises a clamping assembly, a bolt assembly and a pressing assembly.

[0005] The bolt assembly is arranged on the clamping assembly, and the clamping assembly is used for clamping the quick plug type pipe joint.

[0006] One end of the bolt assembly away from the clamping assembly is movably connected with the pressing assembly, and the pressing assembly is lifted and lowered relative to the clamping assembly through the bolt assembly, wherein the pressing assembly is used for pressing the elastic snap ring on the quick plug type pipe joint.

[0007] Further, the bolt assembly comprises a first bolt rod arranged on the clamping assembly and a second bolt rod movably connected with the pressing assembly, the first bolt rod is perpendicular to the second bolt rod, and the first bolt rod and the second bolt rod are an integral piece.

[0008] Further, the clamping assembly comprises a clamping body, the clamping body comprises a first clamping jaw and a second clamping jaw corresponding to the first clamping jaw, and the first clamping jaw is movably connected with the second clamping jaw through the first bolt rod.

[0009] Further, the first clamping jaw comprises a first holding part, a first latch part and a first clamping part, and the second clamping jaw comprises a second holding part, a second latch part and a second clamping part;

[0010] The first holding part is connected with the first clamping part through the first latch part, the second holding part is connected with the second clamping part through the second latch part, the first latch rod is connected on the first latch part and the second latch part, the first holding part is arranged opposite to the second holding part, and the first clamping part is arranged opposite to the second clamping part.

[0011] Further, the clamping assembly further comprises a first elastic member, a holding space is formed between the first holding part and the second holding part, the first elastic member is located in the holding space, and two ends of the first elastic member are detachably connected on the first holding part and the second holding part, wherein the distance from the first holding part to the second holding part in the holding space gradually increases from the first latch part and / or the second latch part to the first holding part and / or the second holding part.

[0012] Further, the pressing assembly comprises a pressing body, the pressing body comprises a third holding part, a lever part and a pressing part, the second latch rod is movably connected on the lever part, the third holding part is connected with the pressing part through the lever part, the third holding part is located between the first clamping part and the second clamping part, and the pressing part is parallel to the first clamping part and / or the second clamping part.

[0013] Further, a movable groove is arranged on one side of the lever part close to the first latch part, two ends of the second latch rod are rotatably connected on two side walls of the movable groove, and the part of the first latch rod away from the first latch part is connected with the second latch rod in the movable groove.

[0014] Further, the pressing assembly further comprises a second elastic member, a fixing nut is arranged on the first latch part, the first latch rod is connected on a first end of the fixing nut, one end of the second elastic member is detachably connected on a second end of the fixing nut, and the other end of the second elastic member away from the fixing nut is detachably connected on the lever part.

[0015] Further, a positioning opening with an opening structure is arranged on the pressing part, the positioning opening is located in the middle of the pressing part, and the positioning opening extends along the whole length direction of the pressing part.

[0016] Further, the first clamping part and the second clamping part form a clamping opening, the clamping opening comprises a strip-shaped opening and an arc-shaped opening, the arc-shaped opening is located in the middle of the strip-shaped opening, and the width of the strip-shaped opening is equal to the width of the positioning opening.

[0017] Advantages:

[0018] The utility model discloses a pipe fitting dismounting device, be applied to quick plug type pipe joint, including clamping subassembly, bolt subassembly and pressing subassembly, the bolt subassembly sets up on clamping subassembly, clamping subassembly is used for clamping quick plug type pipe joint, the bolt subassembly is away from the one end of clamping subassembly with pressing subassembly swing joint, the pressing subassembly passes through bolt subassembly and clamping subassembly are relative and go up and down, wherein, the pressing subassembly is used for pressing the elastic snap ring on quick plug type pipe joint. Therefore the device utilizes pressing subassembly to press the elastic snap ring, makes the finger of operating personnel not to need and elastic snap ring direct contact, reduced the risk of being pinched in the operation process of finger, ensured the security of staff, greatly relieved the pressure that operating personnel hand pressed elastic snap ring bears simultaneously, effectively avoided hand premature fatigue, improved work efficiency and quality. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is schematic view of pipe fitting dismounting device of the utility model one embodiment;

[0020] Figure 2 It is schematic view of bolt subassembly of the utility model one embodiment;

[0021] Figure 3 It is schematic view of clamping subassembly of the utility model one embodiment;

[0022] Figure 4 It is front schematic view of pressing subassembly of the utility model one embodiment;

[0023] Figure 5 It is back schematic view of pressing subassembly of the utility model one embodiment.

[0024] Wherein:

[0025] 1, clamping subassembly;2, bolt subassembly;3, pressing subassembly;

[0026] 10, clamping body;11, first elastic part;

[0027] 101, first clamping forceps;102, second clamping forceps;103, holding space;104, fixed nut;105, clamping opening;

[0028] 1010, first holding part; 1011, first bolt part; 1012, first clamping part;

[0029] 1020, second gripping part; 1021, second latch part; 1022, second clamping part;

[0030] 1050, strip-shaped opening; 1051, arc-shaped opening;

[0031] 20, first latch rod; 21, second latch rod;

[0032] 30, pressing body; 31, second elastic member;

[0033] 301, third gripping part; 302, lever part; 303, pressing part; 304, movable slot; 305, positioning opening.

[0034] The implementation, functional features and advantages of the utility model will be further described with reference to the drawings in combination with embodiments. DETAILED DESCRIPTION

[0035] It should be understood that the specific embodiments described herein are merely intended to explain the utility model, and are not intended to limit the utility model.

[0036] In the description of the utility model, it should be understood that the orientation or position relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like is the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model. In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the utility model, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0037] In the description of the utility model, it should be noted that, unless otherwise specifically specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, it can be directly connected, or indirectly connected through an intermediate medium, it can be the communication between two elements or the interaction relationship between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0038] In the utility model, unless another definite provision and limitation, first feature is on second feature " upper " or " lower " can include first and second features direct contact, also can include first and second features is not direct contact but is through their between another feature contact.

[0039] Referring to Figure 1 The embodiment provides a pipe dismounting device applied to a quick-insertion type pipe joint, which comprises a clamping assembly 1, a latch assembly 2 and a pressing assembly 3.

[0040] The latch assembly 2 is arranged on the clamping assembly 1, and the clamping assembly 1 is used for clamping the quick-insertion type pipe joint.

[0041] One end of the latch assembly 2, which is away from the clamping assembly 1, is movably connected with the pressing assembly 3, the pressing assembly 3 is lifted and lowered relative to the clamping assembly 1 through the latch assembly 2, and the pressing assembly 3 is used for pressing the elastic snap ring on the quick-insertion type pipe joint.

[0042] In the above embodiment, the pipe dismounting device is mainly applied to quick plug type pipe joints, that is, to the dismounting of pneumatic pipes in pneumatic systems or hydraulic systems. The device comprises a clamping assembly 1, a latch assembly 2 and a pressing assembly 3. The clamping assembly 1 is mainly used to firmly clamp the quick plug type pipe joint. The latch assembly 2 is installed on the clamping assembly 1, with one end connected to the clamping assembly 1 and the other end movably connected to the pressing assembly 3. The pressing assembly 3 is used to press the elastic retaining ring on the quick plug type pipe joint, so that when a force is applied to the pressing assembly 3, the pressing assembly 3 can move up and down around the connection point with the clamping assembly 1 by means of the latch assembly 2. In use, first, the operator holds the holding part of the clamping assembly 1 to open the clamping assembly 1, aligns the quick plug type pipe joint, and then holds the holding part to firmly clamp the pipe joint by the elastic clamping force of the clamping assembly 1. Then, the operator holds the holding part of the pressing assembly 3 and lifts it up. At this time, the holding part is lifted up relative to the clamping assembly 1 through the latch assembly 2, the lever part 302 of the pressing assembly 3 rotates around the connection point with the latch assembly 2, and the pressing part 303 is lowered. During the lowering of the pressing part 303, the elastic retaining ring on the quick plug type pipe joint is accurately pressed and pressed down. Therefore, the device uses the pressing assembly 3 to press the elastic retaining ring, so that the fingers of the operator do not need to directly contact the elastic retaining ring, reducing the risk of finger injury during operation, ensuring the safety of the operator, and greatly reducing the pressure on the operator's hands when pressing the elastic retaining ring, effectively avoiding early fatigue of the hands, improving work efficiency and quality.

[0043] Referring to Figures 1-2 In an embodiment, the latch assembly 2 comprises a first latch rod 20 arranged on the clamping assembly 1 and a second latch rod 21 movably connected to the pressing assembly 3. The first latch rod 20 is perpendicular to the second latch rod 21, and the first latch rod 20 and the second latch rod 21 are an integral piece.

[0044] In the above embodiment, the latch assembly 2 is composed of two mutually perpendicular and integrally formed first latch rod 20 and second latch rod 21, forming a T-shaped structure. The first latch rod 20 serves as a vertical support and is connected to the clamping assembly 1, while the second latch rod 21 is arranged horizontally and movably connected to the pressing assembly 3 at both ends, so that the pressing assembly 3 can rotate around the second latch rod 21. At the same time, the first latch rod 20 and the second latch rod 21 are an integral piece, which increases the structural firmness and durability, avoids faults caused by loose or missing parts, and ensures the stability and accuracy of the pressing assembly 3 during operation.

[0045] Referring to Figures 1-3In an embodiment, the clamping assembly 1 comprises a clamping body 10, the clamping body 10 comprising a first clamping jaw 101 and a second clamping jaw 102 corresponding to the first clamping jaw 101, the first clamping jaw 101 being movably connected to the second clamping jaw 102 through the first pin rod 20.

[0046] In the above embodiment, the clamping assembly 1 comprises a clamping body 10, the clamping body 10 comprising a first clamping jaw 101 and a second clamping jaw 102 corresponding to the first clamping jaw 101, the first clamping jaw 101 being movably connected to the second clamping jaw 102 through the first pin rod 20.

[0047] Further, the first clamping jaw 101 comprises a first holding portion 1010, a first pin portion 1011 and a first clamping portion 1012, and the second clamping jaw 102 comprises a second holding portion 1020, a second pin portion 1021 and a second clamping portion 1022, the first holding portion 1010 and the second holding portion 1020 being oppositely arranged and mainly used for hand holding so that the operator can conveniently control the opening and closing action of the clamping jaw, the first clamping portion 1012 and the second clamping portion 1022 are also oppositely arranged and mainly used for directly clamping the quick plug-in pipe joint to ensure its stability, the first pin portion 1011 and the second pin portion 1021 are stacked together and connected through the first pin rod 20 as the rotation center point and connection point of the entire clamping assembly 1, so that the first clamping jaw 101 and the second clamping jaw 102 can perform opening and closing movement around the first pin rod 20, when the pipe joint needs to be clamped, the operator only needs to hold the first holding portion 1010 and the second holding portion 1020 and apply inward force to make the first clamping portion 1012 and the second clamping portion 1022 close and tightly fit the pipe joint, on the contrary, when the pipe joint needs to be released, the operator only needs to pull the holding portion outward to make the clamping portion open, which improves the operation efficiency.

[0048] Referring to Figures 1-3In an embodiment, the clamping assembly 1 further comprises a first elastic member 11, the first gripping portion 1010 and the second gripping portion 1020 form a gripping space 103, the first elastic member 11 is located in the gripping space 103, and the two ends of the first elastic member 11 are detachably connected to the first gripping portion 1010 and the second gripping portion 1020, respectively, wherein the distance between the first gripping portion 1010 and the second gripping portion 1020 in the gripping space 103 gradually increases from the first latch portion 1011 and / or the second latch portion 1021 to the first gripping portion 1010 and / or the second gripping portion 1020.

[0049] In the above embodiment, the clamping assembly 1 further comprises a first elastic member 11, the first gripping portion 1010 and the second gripping portion 1020 are oppositely arranged, and a gripping space 103 is formed therebetween, the first elastic member 11 is located in the gripping space 103, and the two ends of the first elastic member 11 are detachably connected to the first gripping portion 1010 and the second gripping portion 1020, respectively, the first elastic member 11 is located on the central plane of the gripping space 103, which ensures the uniformity of force distribution, in addition, the distance between the first gripping portion 1010 and the second gripping portion 1020 in the gripping space 103 gradually increases from the first latch portion 1011 and / or the second latch portion 1021 to the gripping portion, which provides a more comfortable gripping angle for the operator, when the operator holds the gripping portion and applies an inward force, the first elastic member 11 will be compressed, providing the necessary restoring force, so that when the external force is released, the clamping pliers can automatically recover to the initial state, thereby providing a continuous elastic clamping force for the clamping quick plug pipe joint, which brings great convenience to the user.

[0050] Referring to Figures 1-4 In an embodiment, the pressing assembly 3 comprises a pressing body 30, the pressing body 30 comprises a third gripping portion 301, a lever portion 302, and a pressing portion 303, the second latch rod 21 is movably connected to the lever portion 302, the third gripping portion 301 is connected to the pressing portion 303 through the lever portion 302, the third gripping portion 301 is located between the first clamping portion 1012 and the second clamping portion 1022, and the pressing portion 303 is parallel to the first clamping portion 1012 and / or the second clamping portion 1022.

[0051] In the above embodiment, the pressing assembly 3 comprises a pressing body 30, which is composed of a third gripping part 301, a lever part 302 and a pressing part 303, and the three parts are integrated. The third gripping part 301 and the lever part 302 are both arc-shaped structures, but their convex directions are opposite, and the arc of the third gripping part 301 is larger than that of the lever part 302. The third gripping part 301 is designed to be longer, so that it can penetrate through the gripping space 103 between the first gripping part 1010 of the first clamping jaw 101 and the second gripping part 1020 of the second clamping jaw 102, and is located between the first gripping part 1012 and the second gripping part 1022. Meanwhile, the first elastic member 11 is located between the third gripping part 301 and the first and / or second latch part 1011 and 1021. The pressing part 303 is parallel to the first and / or second gripping part 1012 and 1022. The lever part 302 is movably connected to the second latch rod 21 through the second latch rod 21, so that the whole pressing assembly 3 can rotate around the fulcrum. When the operator pulls the third gripping part 301 upward, the pressing part 303 will move downward through the lever principle, thereby effectively pressing the elastic ring, improving the accuracy and stability of the operation.

[0052] With reference to Figures 1-5 In an embodiment, the lever part 302 is provided with a movable slot 304 on the side close to the first latch part 1011. The two ends of the second latch rod 21 are rotatably connected to the two side walls of the movable slot 304. The part of the first latch rod 20 away from the first latch part 1011 is connected to the second latch rod 21 in the movable slot 304.

[0053] In the above embodiment, the lever part 302 is provided with a movable slot 304 on the side close to the first latch part 1011. The movable slot 304 extends along the length direction of the lever part 302 for a specified distance, providing a rotating space for the second latch rod 21. The two ends of the second latch rod 21 are rotatably connected to the two side walls of the movable slot 304, allowing the lever part 302 to rotate around the second latch rod 21. Meanwhile, the part of the first latch rod 20 away from the first latch part 1011 is connected to the second latch rod 21 in the movable slot 304, so that the first latch rod 20 can have a certain movement space in the movable slot 304, ensuring that the lever part 302 can move up and down flexibly. When the operator applies an upward pulling force to the third gripping part 301, the lever part 302 rotates around the second latch rod 21 as the fulcrum, causing the pressing part 303 to move downward and press the elastic ring on the quick plug pipe joint. The movable slot 304 not only ensures that the lever part 302 has enough movement range, but also ensures the stability and accuracy of the whole pressing process.

[0054] With reference toFigures 1-5 In an embodiment, the pressing assembly 3 further comprises a second elastic member 31, the first pin rod 20 is connected to the first end of a fixing nut 104 provided on the first pin portion 1011, one end of the second elastic member 31 is detachably connected to the second end of the fixing nut 104, and the other end of the second elastic member 31 is detachably connected to the lever portion 302.

[0055] In the above embodiment, the pressing assembly 3 further comprises a second elastic member 31, the first pin portion 1011 is provided with a fixing nut 104, the fixing nut 104 has two different ends, the first end is circular in structure for connecting the first pin rod 20, and the second end is a straight plate for connecting one end of the second elastic member 31, and the other end of the second elastic member 31 is detachably connected to the lever portion 302, which ensures that it can provide appropriate elastic restoring force during pressing. The two ends of the second elastic member 31 are detachably connected, and the second elastic member 31 is arranged parallel to the first pin rod 20, so that when the pressing portion 303 presses down the elastic clasp on the quick plug pipe joint, the second elastic member 31 can effectively absorb and release energy, thereby helping the pressing assembly 3 to automatically reset, which facilitates maintenance and replacement, and improves the overall durability and flexibility of the device.

[0056] Referring to Figures 1-5 In an embodiment, the pressing portion 303 is provided with an open structure positioning port 305, the positioning port 305 is located in the middle of the pressing portion 303, and the positioning port 305 extends along the entire length direction of the pressing portion 303.

[0057] In the above embodiment, the pressing portion 303 is provided with an open structure positioning port 305, the positioning port 305 is located in the middle of the pressing portion 303, and the positioning port 305 extends along the entire length direction of the pressing portion 303. The positioning port 305 has an opening with upper and lower parts and a free end, so that the hydraulic pipe can enter the pressing portion 303 through the free end opening of the positioning port 305, thereby realizing precise pressing of the elastic clasp on the quick plug pipe joint. When the elastic clasp needs to be pressed, the pressing portion 303 will accurately act on the elastic clasp according to the force applied by the operator, without affecting the hydraulic pipe itself, reducing the operation difficulty and time consumption, and improving the work efficiency.

[0058] Further, the first clamping part 1012 and the second clamping part 1022 are formed with a clamping opening 105, the length of the clamping opening 105 is greater than the length of the positioning opening 305, the clamping opening 105 is composed of a strip-shaped opening 1050 and an arc-shaped opening 1051, the arc-shaped opening 1051 is located in the middle of the strip-shaped opening 1050, the width of the strip-shaped opening 1050 is equal to the width of the positioning opening 305, the total length of the clamping opening 105 is greater than the length of the positioning opening 305, the arc-shaped opening 1051 is designed to adapt to the fast-insertion type pipe joint with a large radius, and a larger contact area is provided to ensure firm clamping, and the strip-shaped opening 1050 is used for clamping the fast-insertion type pipe joint with the same diameter and the width of the positioning opening 305, so that the accurate clamping force and stability are ensured, the clamping assembly 1 can flexibly cope with pipe joints of different sizes, and the universality and practicability of the device are improved.

[0059] The above only describes the preferred embodiments of the present application, and does not limit the patent range of the present application, and any equivalent structure or equivalent process transformation obtained by using the content of the present application specification and drawings, or direct or indirect application in other related technical fields, are also included in the patent protection range of the present application.

Claims

1. A pipe dismounting device applied to a quick coupling pipe joint, characterized in that, The clamp assembly, the latch assembly and the pressing assembly are provided; The latch assembly is arranged on the clamp assembly, and the clamp assembly is used for clamping the quick plug pipe joint; One end of the latch assembly away from the clamp assembly is movably connected with the pressing assembly, and the pressing assembly is lifted and lowered relative to the clamp assembly through the latch assembly, wherein the pressing assembly is used for pressing the elastic clamping ring on the quick plug pipe joint.

2. The device of claim 1, wherein The latch assembly comprises a first latch rod arranged on the clamp assembly and a second latch rod movably connected with the pressing assembly, wherein the first latch rod is perpendicular to the second latch rod, and the first latch rod and the second latch rod are an integral piece.

3. The device of claim 2, wherein, The clamp assembly comprises a clamp body, wherein the clamp body comprises a first clamp jaw and a second clamp jaw corresponding to the first clamp jaw, and the first clamp jaw is movably connected with the second clamp jaw through the first latch rod.

4. The device of claim 3, wherein, The first clamp jaw comprises a first holding part, a first latch part and a first clamp part, and the second clamp jaw comprises a second holding part, a second latch part and a second clamp part; The first holding part is connected with the first clamp part through the first latch part, the second holding part is connected with the second clamp part through the second latch part, the first latch rod is connected on the first latch part and the second latch part, the first holding part is arranged opposite to the second holding part, and the first clamp part is arranged opposite to the second clamp part.

5. The device of claim 4, wherein, The clamp assembly further comprises a first elastic member, a holding space is formed between the first holding part and the second holding part, the first elastic member is located in the holding space, and two ends of the first elastic member are detachably connected on the first holding part and the second holding part, wherein the distance from the first holding part to the second holding part in the holding space gradually increases from the first latch part and / or the second latch part to the first holding part and / or the second holding part.

6. The device of claim 4, wherein, The pressing assembly comprises a pressing body, wherein the pressing body comprises a third holding part, a lever part and a pressing part, the second latch rod is movably connected on the lever part, the third holding part is connected with the pressing part through the lever part, the third holding part is located between the first clamp part and the second clamp part, and the pressing part is parallel to the first clamp part and / or the second clamp part.

7. The device of claim 6, wherein, A movable groove is arranged on one side of the lever part close to the first latch part, two ends of the second latch rod are rotatably connected on two side walls of the movable groove, and the part of the first latch rod away from the first latch part is connected with the second latch rod in the movable groove.

8. The device of claim 6, wherein, The pressing assembly further comprises a second elastic member, a fixing nut is arranged on the first latch part, the first latch rod is connected on a first end of the fixing nut, one end of the second elastic member is detachably connected on a second end of the fixing nut, and the other end of the second elastic member away from the fixing nut is detachably connected on the lever part.

9. The device of claim 6, wherein, The pressing part is provided with an opening structure of a positioning opening, the positioning opening is located in the middle of the pressing part, and the positioning opening extends along the entire length direction of the pressing part.

10. The device of claim 9, wherein, The first clamping part and the second clamping part form a clamping opening, the clamping opening includes a strip-shaped opening and an arc-shaped opening, the arc-shaped opening is located in the middle of the strip-shaped opening, and the width of the strip-shaped opening is equal to the width of the positioning opening.

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