Multifunctional skin nailing device for animal experiment

Abstract

The utility model belongs to the technical field of suture tools, and particularly relates to a multifunctional skin stapler for animal experiments, which comprises a lower component, an upper component movably connected to the upper side of the right side of the lower component, a limiting component arranged in the middle of the upper side of the upper component, and a staple cartridge structure arranged on the lower portion of the right side of the lower component. The upper assembly comprises a grip, a movable hole is formed in the middle of the upper side of the grip, a movable cavity is formed in the upper side of the inner surface of the movable hole, two limiting holes distributed left and right are formed in the lower portion of the inner surface of the movable hole, guide-in grooves are formed in the upper walls in the two limiting holes, and guide-out grooves are formed in the anticlockwise steering sides in the two limiting holes. When the device is not used, the limiting assembly can be pressed to enable protruding blocks on two elastic strips in the limiting assembly to be clamped with two limiting holes in movable holes of the upper assembly, meanwhile, a first fixing rod in the limiting assembly extends downwards to abut against the lower assembly, and the situation that when other personnel touch the device, the device is mistakenly triggered is prevented.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of suture tool, specifically a kind of multifunctional skin stapler for animal experiment. BACKGROUND

[0002] Although skin stapler has been widely used in surgical operation, traditional suture is still used to close skin incision in animal experiment, and the many shortcomings of suture in animal experiment make experiment personnel headache. Similar to human surgical operation, in animal experiment, there are also many shortcomings such as long time-consuming and easy infection in using suture to close skin incision, and the differences between experimental animals and human body in size, skin texture and anti-infection ability may further magnify the shortcomings of suture.

[0003] Based on the many advantages of skin stapler in human surgical operation, the application of skin stapler in animal experiment is expected to greatly shorten the skin suture time, reduce the incision infection rate and promote the incision healing. At the same time, the skin nail is hard and fixed firmly, and it is not easy to be damaged by experimental animals. In addition, skin stapler can also avoid needle prick and reduce the pain of removal, which is beneficial to protect the safety of experimental personnel and improve the welfare of experimental animals. Unfortunately, the application value of skin stapler in animal experiment field lacks attention, and at present, there is no skin stapler developed for animal experiment, so there is a gap to be filled in this field.

[0004] After searching, in the skin stapler with replaceable nail magazine with publication number CN117982186A, the application provides a skin stapler with replaceable nail magazine, relating to the technical field of medical devices. The skin stapler with replaceable nail magazine includes a firing assembly and a nail magazine, the firing assembly includes a bracket, the nail magazine is in sliding connection with the bracket, a lock catch is rotatably arranged on the bracket, and the lock catch can be in clamping cooperation with the nail magazine, which can improve the utilization rate of the skin stapler and reduce product consumption. However, the device still has some problems in actual operation:

[0005] 1. The skin stapler described above does not have a limiting component between the two handles when in use, which can easily cause accidental touch of the device during use, and there is a risk of causing accidental injury;

[0006] 2. When the nail magazine needs to be replaced, the connecting column needs to be twisted to separate it from the hook, so that the nail magazine can be pulled out. The operation process is not only relatively complicated, but also after the connecting column and the hook are separated, the nail magazine cannot be ejected automatically, and the user still needs to pull it out, which is relatively troublesome.

[0007] Therefore, a multifunctional skin stapler for animal experiment is proposed for the above problems. UTILITY MODEL CONTENTS

[0008] (I) Technical problems solved

[0009] In view of the deficiencies of the prior art, the utility model provides a multi -functional skin stapler for animal experiment solves the above -mentioned skin anastomat does not have the safety lock, and the problem of easy misoperation.

[0010] (II) Technical solutions

[0011] To achieve the above object, the utility model provides following technical scheme: a multi -functional skin stapler for animal experiment, including lower assembly, the upper side swing joint has upper assembly in the right side of lower assembly, the upper side middle part of upper assembly is provided with limiting component, the right lower part of lower assembly is provided with staple cartridge structure;

[0012] The upper assembly includes a handle, an active hole is formed in the upper middle part of the handle, an active cavity is formed in the upper inner surface of the active hole, two left and right distributed limiting holes are formed in the lower part of the inner surface of the active hole, an inlet groove is formed in the inner wall of each limiting hole, and an outlet groove is formed in the counterclockwise turning side of each limiting hole.

[0013] The limiting component includes a first fixed rod, an adjusting knob is fixedly connected to the upper part of the first fixed rod, a first limiting ring is fixedly connected to the upper part of the outer surface of the first fixed rod, and a first spring is sleeved with the first limiting ring, the first limiting ring is located on the upper part of the first spring, two left and right distributed elastic strips are fixedly connected to the lower part of the outer surface of the first fixed rod, a protrusion is fixedly connected to the upper part of the side of each elastic strip away from each other, the first fixed rod is located in the active hole and is movably connected with the active hole, the adjusting knob is located on the upper part of the upper assembly, the first limiting ring and the first spring are located in the active cavity, and the first limiting ring is movably connected with the active cavity, the two protrusions can be clamped with the two limiting holes, and the two protrusions can be slidably connected with the two inlet grooves and the two outlet grooves.

[0014] Preferably, a groove is formed in the lower right side of the handle, and two front and rear distributed connecting ears are fixedly connected to the groove, the groove is located between the two connecting ears, the two connecting ears are movably connected with the front right side and the rear right side of the lower assembly respectively, and a pressing plate is fixedly connected to the right side of the inner upper wall of the groove.

[0015] Preferably, a groove is formed in the upper right side of the lower assembly, a rectangular through hole is formed in the right side of the lower inner wall of the groove, a cavity groove is formed in the left wall of the middle part of the rectangular through hole, a pressing piece is arranged in the rectangular through hole and the cavity groove, a first mounting groove is formed in the right lower part of the right side of the lower assembly and communicates with the rectangular through hole, a second mounting groove is formed in the right side of the rear wall of the first mounting groove, two front and rear distributed second springs are fixedly connected to the left wall of the first mounting groove, and a push plate is fixedly connected to the right side of the two second springs.

[0016] Preferably, the nail pressing part comprises a first fixed plate, the middle part of the left side of the first fixed plate is fixedly connected with a limiting plate, the lower part of the limiting plate is fixedly connected with two third springs distributed in front and back, the upper part of the left side of the first fixed plate is fixedly connected with an arc-shaped top plate, and the lower part of the middle side of the first fixed plate is fixedly connected with a second fixed plate.

[0017] Preferably, the first fixed plate and the second fixed plate are located inside the rectangular through hole and are in sliding connection with the rectangular through hole, the limiting plate and the two third springs are located inside the cavity groove, and the limiting plate is in sliding connection with the cavity groove, the arc-shaped top plate is located inside the groove, and the arc-shaped top plate is arranged in corresponding relationship with the lower pressing plate in the up-down direction.

[0018] Preferably, the nail cartridge structure comprises a cartridge box, the rear right side of the cartridge box is fixedly connected with an extension block, the middle part of the left side of the extension block is fixedly connected with a connecting piece, and the inner front wall and the inner rear wall of the cartridge box are both provided with a limiting sliding groove.

[0019] Preferably, the left wall of the cartridge box is fixedly connected with two fourth springs distributed in front and back, the right side of the two fourth springs is fixedly connected with a nail pushing plate, the front part and the rear part of the nail pushing plate are both fixedly connected with a sliding block, the two sliding blocks are in sliding connection with the two limiting sliding grooves respectively, and the cartridge box is in sliding connection with the first mounting groove.

[0020] Preferably, the connecting piece comprises a third fixed plate and a second fixed rod, the middle part of the right side of the third fixed plate is provided with a circular through hole, the inner surface of the circular through hole is fixedly connected with a soft rubber ring, the left side of the second fixed rod is fixedly connected with a taper ring and a second limiting ring and is in sliding connection with a double-head taper block.

[0021] Preferably, the third fixed plate is fixedly connected with the middle side inside the second mounting groove, the second fixed rod is fixedly connected with the extension block, the taper ring is located on the left side of the second limiting ring, the double-head taper block is located between the taper ring and the second limiting ring, and the taper ring and the double-head taper block can both pass through the soft rubber ring.

[0022] (Three) beneficial effects

[0023] Compared with the prior art, the multifunctional skin nailer for animal experiments has the following beneficial effects:

[0024] 1. The utility model discloses a limit component is set up in the upper assembly, when the device is not used, can press the limit component, and the protruding block on the two elastic strips in the limit component is clamped with two limit holes in the upper assembly movable hole respectively, and simultaneously, the first fixed link in the limit component extends downward and touches the lower assembly, prevents the device from being triggered by other personnel, when needing to use the device, anticlockwise rotation limit component makes the protruding block in the limit component separate with the limit groove, and the limit component can be reset automatically through the spring set up inside, and the user rotates the limit component clockwise and assists the limit component to restore the initial position, and the limit operation to the device can be realized again by pressing the limit component directly, which greatly improves the use safety of the device, and makes the limit component very simple and convenient to operate.

[0025] 2. The utility model discloses a first installation slot inside for receiving the storage box is fixedly connected with the push plate through two springs, and the connecting piece is arranged in the second installation slot on the side of the box and the side of the first installation slot, when the nail in the box is used up, the box can be pressed directly, and the second fixed link in the connecting piece slides to the first installation slot inside, when the second fixed link slides, the double -end taper block will be pushed through the round through -hole in the third fixed plate through the second limit ring, when the box is pressed and then is loosened directly, the box will move to the first installation slot outside through the thrust of two springs in the first installation slot inside, and second fixed link is pulled out simultaneously, and two taper pieces on the second fixed link are pulled out the second installation slot through the round through -hole, realize the easy taking out of the box, when the box is put into the first installation slot inside after the supplement of new nail to the box, when the box enters the first installation slot, the second fixed link will push the taper ring through the round through -hole on the third fixed plate, and the box is limited through the taper ring and the third fixed plate, so that the box is fixed and limited automatically when installation is completed, and it is more convenient to operate. ACCURATE DRAWINGS

[0026] The drawings described herein are used to provide further understanding of the utility model and constitute part of the application. The illustrative embodiments of the utility model and their description are used to explain the utility model and do not constitute improper limitation on the utility model. In the drawings:

[0027] Figure 1 It is the three-dimensional structure schematic diagram of the utility model;

[0028] Figure 2 It is the three-dimensional structure cutout schematic diagram of the upper assembly of the utility model;

[0029] Figure 3 It is the internal structure cutout schematic diagram of the upper assembly of the utility model;

[0030] Figure 4It is the three-dimensional structure schematic view of the limiting assembly of the utility model;

[0031] Figure 5 It is the three-dimensional structure section view of the lower assembly of the utility model;

[0032] Figure 6 It is the three-dimensional structure schematic view of the nail pressing piece of the utility model;

[0033] Figure 7 It is the internal structure section view of the lower assembly of the utility model;

[0034] Figure 8 It is the three-dimensional structure schematic view of the nail magazine structure of the utility model;

[0035] Figure 9 It is the three-dimensional structure schematic view of the connecting piece of the utility model.

[0036] In the drawing: 1, lower assembly; 2, upper assembly; 3, limiting assembly; 4, nail magazine structure; 21, handle; 22, empty slot; 23, connecting lug; 24, lower pressing plate; 25, movable hole; 26, movable cavity; 27, limiting hole; 28, lead-in slot; 29, lead-out slot; 31, first fixed rod; 32, adjusting knob; 33, first limiting ring; 34, first spring; 35, elastic strip; 36, protruding block; 11, recess; 12, rectangular through hole; 13, cavity slot; 14, nail pressing piece; 15, first installation slot; 16, second installation slot; 17, second spring; 18, push plate; 141, first fixed plate; 142, limiting plate; 143, third spring; 144, arc-shaped top plate; 145, second fixed plate; 41, magazine box; 42, extension block; 43, connecting piece; 44, limiting sliding slot; 45, fourth spring; 46, nail pushing plate; 47, sliding block; 431, third fixed plate; 432, second fixed rod; 433, circular through hole; 434, soft rubber ring; 435, taper ring; 436, second limiting ring; 437, double-head taper block. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0038] The specific embodiments are given below.

[0039] Please refer to Figure 1The utility model provides a multi -functional skin nailer for animal experiment, including lower assembly 1, lower assembly 1 right side upside movable joint has upper assembly 2, and upper assembly 2 upside middle part is provided with limiting component 3, and lower assembly 1 right side lower part is provided with nail magazine structure 4.

[0040] Further as Figures 1-4 The utility model discloses a multi -functional skin nailer for animal experiment, including lower assembly 1, lower assembly 1 right side upside movable joint has upper assembly 2, and upper assembly 2 upside middle part is provided with limiting component 3, and lower assembly 1 right side lower part is provided with nail magazine structure 4.

[0041] Further as

[0042] Further as Figure 1 、 Figures 5-7As shown, the lower assembly 1 upper right side is provided with a recess 11, the recess 11 lower wall right side is provided with a rectangular through hole 12, the rectangular through hole 12 left wall middle part is provided with a cavity slot 13, the rectangular through hole 12 and the cavity slot 13 inside are jointly provided with a press nail piece 14, the lower assembly 1 right side lower part is provided with a first installation slot 15 communicated with the rectangular through hole 12, the first installation slot 15 rear wall right side is provided with a second installation slot 16, the first installation slot 15 left wall is fixedly connected with two front and back distributed second springs 17, the two second springs 17 right side are jointly fixedly connected with a push plate 18, the press nail piece 14 includes a first fixed plate 141, the first fixed plate 141 left side middle part is fixedly connected with a limiting plate 142, the limiting plate 142 lower part is fixedly connected with two front and back distributed third springs 143, the first fixed plate 141 upper left side is fixedly connected with an arc-shaped top plate 144, the first fixed plate 141 lower middle side is fixedly connected with a second fixed plate 145, the first fixed plate 141 and the second fixed plate 145 are located inside the rectangular through hole 12 and are both in sliding connection with the rectangular through hole 12, the limiting plate 142 and the two third springs 143 are located inside the cavity slot 13, and the limiting plate 142 is in sliding connection with the cavity slot 13, the arc-shaped top plate 144 is located inside the recess 11, and the arc-shaped top plate 144 is arranged in upper and lower correspondence with the lower pressing plate 24.

[0043] Through the above scheme: by setting the upper end surface of the upper plate of the press nail piece 14 into an arc-shaped concave surface structure, the lower pressing plate 24 in the upper assembly 2 can always be in contact with the arc-shaped top plate 144 during use of the device, and at the same time, the setting of the connecting rod structure in the existing press nail structure can be omitted, not only saving production cost, but also reducing the damage rate during use of the device.

[0044] Further as shown in the drawings, Figure 8 The nail cartridge structure 4 includes a cartridge box 41, the cartridge box 41 rear right side is fixedly connected with an extension block 42, the extension block 42 left side middle part is fixedly connected with a connecting piece 43, the cartridge box 41 inner front wall and rear wall are both provided with a limiting sliding slot 44, the cartridge box 41 inner left wall is fixedly connected with two front and back distributed fourth springs 45, the two fourth springs 45 right side are jointly fixedly connected with a push nail plate 46, the push nail plate 46 front part and rear part are both fixedly connected with a sliding block 47, the two sliding blocks 47 are respectively in sliding connection with the two limiting sliding slots 44, and the cartridge box 41 is in sliding connection with the first installation slot 15.

[0045] Through the above scheme: by setting the push nail plate 46 connected by the two fourth springs 45 in the cartridge box 41, after the nails are loaded into the cartridge box 41, the nails can be always kept on the right side of the cartridge box 41 through the pushing of the push nail plate 46, preventing the situation of incomplete use of nails but empty gun during use of the device.

[0046] Further as shown in the drawings, Figure 8 And Figure 9As shown, the connecting piece 43 comprises a third fixed plate 431 and a second fixed rod 432, a circular through hole 433 is formed in the middle right side of the third fixed plate 431, a soft rubber ring 434 is fixedly connected to the inner surface of the circular through hole 433, the second fixed rod 432 is fixedly connected with a taper ring 435 and a second limiting ring 436 on the left side and is slidingly connected with a double-head taper block 437, the third fixed plate 431 is fixedly connected to the middle side inside the second mounting groove 16, the second fixed rod 432 is fixedly connected with the extension block 42, the taper ring 435 is located on the left side of the second limiting ring 436, and the double-head taper block 437 is located between the taper ring 435 and the second limiting ring 436, and the taper ring 435 and the double-head taper block 437 can pass through the soft rubber ring 434.

[0047] Through the above scheme: by jointly arranging the connecting piece 43 between the lower assembly 1 and the cartridge box 41, the device can be very convenient to take out and install the cartridge box 41 when replacing the nails, and the device is more convenient to use.

[0048] Working principle: when using the device, the upper assembly 2 and the lower assembly 1 of the device are held, the lower assembly 1 is pressed by the lower pressing plate 24 in the upper assembly 2, the nail pressing piece 14 in the lower assembly 1 is pressed, and the nail in the nail cartridge structure 4 is quickly pushed out when the nail pressing piece 14 is pressed down, so as to realize the nailing operation;

[0049] When the device is not used, the limiting assembly 3 in the upper assembly 2 can be pressed, the protrusions 36 on the two elastic strips 35 in the limiting assembly 3 are respectively clamped with the two limiting holes in the movable hole 25 of the upper assembly 2, and at the same time, the first fixed rod 31 in the limiting assembly 3 extends downward to abut against the lower assembly 1, preventing the device from being triggered by mistake when other people touch the device;

[0050] When the device needs to be used again, the limiting assembly 3 is counterclockwise rotated, the protrusions 36 in the limiting assembly 3 are separated from the limiting groove 27, the limiting assembly 3 can be automatically reset by the spring arranged inside, and the user can rotate the limiting assembly 3 clockwise to assist the limiting assembly 3 to return to the initial position;

[0051] When the device is in use, the nails in the nail bin structure 4 need to be replaced when the nails are used up, the bin box 41 can be directly pressed, the bin box 41 and the second fixing rod 432 in the connecting piece 43 are simultaneously slid to the inside of the first installation slot 15, when the second fixing rod 432 slides, the double-head taper block 437 is pushed to pass through the circular through hole 433 in the third fixing plate 431 through the second limiting ring 436, when the bin box 41 is directly loosened after being pressed, the bin box 41 is moved to the outside of the first installation slot 15 through the thrust of the two springs in the inside of the first installation slot 15, and the second fixing rod 432 is pulled, and the two taper pieces on the second fixing rod 432 are pulled out of the second installation slot 16 through the circular through hole 433, so that the bin box 41 is easily taken out;

[0052] After the nails in the bin box 41 are replenished, the bin box 41 is directly installed in the inside of the first installation slot 15, the bin box 41 can be automatically limited and fixedly installed through the connecting piece 43, and the nails in the bin box 41 can be very convenient to replace.

[0053] The basic principle, main characteristics and advantages of the utility model are shown and described. It should be understood by those skilled in the art that the utility model is not limited by the above-mentioned embodiments, the above-mentioned embodiments and the description in the specification are only used to illustrate the principle of the utility model, various changes and improvements of the utility model can be made without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model.

Claims

1. A multi-functional skin stapler for animal experiments, comprising a lower assembly (1), characterized in that: The lower component (1) is movably connected with the upper component (2) on the right side of the upper side, the upper component (2) is provided with the limiting component (3) on the middle of the upper side, and the lower component (1) is provided with the nail cartridge structure (4) on the lower right side. The upper component (2) comprises the handle (21), the movable hole (25) is formed in the middle of the upper side of the handle (21), the movable cavity (26) is formed in the inner surface of the movable hole (25) on the upper side, the two left and right limiting holes (27) are formed in the inner surface of the movable hole (25) on the lower side, the guide-in grooves (28) are formed in the inner upper walls of the two limiting holes (27), and the guide-out grooves (29) are formed in the inner counterclockwise turning sides of the two limiting holes (27). The limiting component (3) comprises the first fixed rod (31), the adjusting knob (32) is fixedly connected with the upper part of the first fixed rod (31), the first limiting ring (33) is fixedly connected with the upper part of the outer surface of the first fixed rod (31) and is sleeved with the first spring (34), the first limiting ring (33) is located on the upper part of the first spring (34), the two left and right elastic strips (35) are fixedly connected with the lower part of the outer surface of the first fixed rod (31), the protrusions (36) are fixedly connected with the upper parts of the two elastic strips (35) which are away from each other, the first fixed rod (31) is located in the movable hole (25) and is movably connected with the movable hole (25), the adjusting knob (32) is located on the upper part of the upper component (2), the first limiting ring (33) and the first spring (34) are located in the movable cavity (26), the first limiting ring (33) is movably connected with the movable cavity (26), the two protrusions (36) are claspably connected with the two limiting holes (27), and the two protrusions (36) are slidably connected with the two guide-in grooves (28) and the two guide-out grooves (29).

2. The multi-functional skin stapler for animal experiments according to claim 1, characterized in that: The handle (21) is provided with the two front and rear connecting ears (23) which are fixedly connected with the lower right side of the handle (21) and are distributed in front and rear, and the hollow groove (22) is fixedly connected with the lower right side of the handle (21) and is located between the two connecting ears (23), the two connecting ears (23) are movably connected with the front right side and the rear right side of the lower component (1) respectively, and the lower pressing plate (24) is fixedly connected with the right side of the inner upper wall of the hollow groove (22).

3. The multi-functional skin stapler for animal experiments according to claim 1, wherein: The recess (11) is formed in the upper right side of the lower component (1), the rectangular through hole (12) is formed in the right inner lower wall of the recess (11), the cavity groove (13) is formed in the left inner wall of the rectangular through hole (12), the pressing nail part (14) is arranged in the rectangular through hole (12) and the cavity groove (13), the first installation groove (15) which is communicated with the rectangular through hole (12) is formed in the lower right side of the lower component (1), the second installation groove (16) is formed in the right inner rear wall of the first installation groove (15), the two front and rear second springs (17) are fixedly connected with the left inner wall of the first installation groove (15), and the push plate (18) is fixedly connected with the right sides of the two second springs (17).

4. The multi-functional skin stapler for animal experiments according to claim 3, wherein: The pressing nail piece (14) comprises a first fixed plate (141), the left middle part of the first fixed plate (141) is fixedly connected with a limiting plate (142), the lower part of the limiting plate (142) is fixedly connected with two third springs (143) distributed in front and back, the upper left side of the first fixed plate (141) is fixedly connected with an arc-shaped top plate (144), and the lower middle side of the first fixed plate (141) is fixedly connected with a second fixed plate (145).

5. The multi-functional skin stapler for animal experiments according to claim 4, wherein: The first fixed plate (141) and the second fixed plate (145) are located inside the rectangular through hole (12) and are in sliding connection with the rectangular through hole (12), the limiting plate (142) and the two third springs (143) are located inside the cavity groove (13), and the limiting plate (142) is in sliding connection with the cavity groove (13), and the arc-shaped top plate (144) is located inside the groove (11), and the arc-shaped top plate (144) is arranged in corresponding upper and lower positions of the lower pressing plate (24).

6. The multi-functional skin stapler for animal experiments according to claim 1, wherein: The nail cartridge structure (4) comprises a cartridge box (41), the rear right side of the cartridge box (41) is fixedly connected with an extension block (42), the left middle part of the extension block (42) is fixedly connected with a connecting piece (43), and the inner front wall and the rear wall of the cartridge box (41) are both provided with a limiting sliding groove (44).

7. The multi-functional skin stapler for animal experiments according to claim 6, wherein: The left wall of the cartridge box (41) is fixedly connected with two fourth springs (45) distributed in front and back, the right side of the two fourth springs (45) is fixedly connected with a nail pushing plate (46), the front part and the rear part of the nail pushing plate (46) are fixedly connected with sliding blocks (47), and the two sliding blocks (47) are in sliding connection with the two limiting sliding grooves (44).

8. The multi-functional skin stapler for animal experiments according to claim 6, wherein: The connecting piece (43) comprises a third fixed plate (431) and a second fixed rod (432), the right middle part of the third fixed plate (431) is provided with a circular through hole (433), the inner surface of the circular through hole (433) is fixedly connected with a soft rubber ring (434), the left side of the second fixed rod (432) is fixedly connected with a taper ring (435) and a second limiting ring (436) and is in sliding connection with a double-head taper block (437).

9. The multi-functional skin stapler for animal experiments according to claim 8, wherein: The third fixed plate (431) is fixedly connected with the inner middle side of the second installation groove (16), the second fixed rod (432) is fixedly connected with the extension block (42), the taper ring (435) is located on the left side of the second limiting ring (436), the double-head taper block (437) is located between the taper ring (435) and the second limiting ring (436), and the taper ring (435) and the double-head taper block (437) can pass through the soft rubber ring (434).

Images