阅读说明：本技术 一种应用于动物mri实验的实验床体 (Experiment bed body applied to animal MRI experiment ) 是由 张红金 于 2020-12-04 设计创作，主要内容包括：本发明公开了一种应用于动物MRI实验的实验床体,涉及实验用品技术领域,其技术方案要点包括侧护板,所述侧护板的内侧面开设有内滑槽,且内滑槽的与侧护板之间构成固定连接,所述内滑槽的内侧连接有前侧挡板,且前侧挡板与内滑槽之间构成滑动结构,所述侧护板的正下方设置有侧箱端壳,所述弹簧的左侧设置有弹力杆,且弹力杆与弹簧之间为固定连接,所述旋转撑杆与翻转柄之间为固定连接。该结构便于将不便卧立的动物进行固定,以便于对体型较宽的动物进行固定,使得整体在固定不同种类的动物时,具有较好的固定适应性,使得推进时具有较好的稳定性,以避免移动时使动物产生晕眩的感觉,降低对实验的影响。(The invention discloses an experimental bed body applied to animal MRI experiments, relating to the technical field of experimental supplies. This structure is convenient for fix the inconvenient animal of lying upright to be convenient for fix the animal of size broad, make whole when fixed different kind's animal, have better fixed adaptability, make better stability when promoting, make the animal produce dizzy sensation when avoiding removing, reduce the influence to the experiment.)

1. The utility model provides an experiment bed body for animal MRI experiment, includes side guard plate (1), its characterized in that: the side protection plate structure is characterized in that an inner sliding groove (2) is formed in the inner side face of the side protection plate (1), the inner sliding groove (2) and the side protection plate (1) are fixedly connected, a front side baffle (3) is connected to the inner side of the inner sliding groove (2), a sliding structure is formed between the front side baffle (3) and the inner sliding groove (2), a side box end shell (4) is arranged under the side protection plate (1), a moving end (5) is arranged on the inner side of the side box end shell (4), a bottom fixing end (7) is arranged on the lower side of the moving end (5), and a base end (9) is fixed to the outer side of the bottom fixing end (7).

2. An experiment bed body applied to animal MRI experiments according to claim 1, characterized in that a sliding structure is formed between the side box end shell (4) and the moving end (5), the rear end of the fixed base end (9) is provided with a stepping platform (8), the fixed base end (9) and the stepping platform (8) are fixedly connected, and the side protection plates (1) are symmetrical about the vertical center line of the moving end (5).

3. The experimental bed body applied to the animal MRI experiment as claimed in claim 1, wherein a slide rod (10) is fixed inside the side box end housing (4), the slide rod (10) and the side box end housing (4) are connected by welding, a threaded rod (11) is arranged inside the slide rod (10), a rotating structure is formed between the threaded rod (11) and the side box end housing (4), a pushing end plate (12) is arranged at the right side end of the threaded rod (11), the pushing end plate (12) and the threaded rod (11) are connected by threads, a driving wheel (14) is fixed at the right end of the threaded rod (11), and the driving wheel (14) and the threaded rod (11) are connected by welding.

4. The experimental bed body for animal MRI experiments according to claim 3, characterized in that a driving motor (13) is disposed at the right side end of the driving wheel (14), a rotating structure is formed between the driving motor (13) and the driving wheel (14), a fixed arm (15) is disposed inside the inner groove (6), a sliding structure is formed between the fixed arm (15) and the inner groove (6), a moving groove (17) is disposed in front of the upper surface of the bottom fixed end (7), the moving groove (17) penetrates through the upper surface of the bottom fixed end (7), a fixed attachment ring (18) is disposed inside the moving groove (17), and the sliding structure is formed between the fixed attachment ring (18) and the moving groove (17).

5. The experimental bed body applied to animal MRI experiments according to claim 1, characterized in that a sliding structure is formed between the movable end (5) and the bottom fixed end (7), a neck pillow (16) is fixed on the upper surface of the left end of the movable end (5), the movable end (5) is fixedly connected with the neck pillow (16), the front side and the rear side of the movable end (5) are both provided with an upward moving groove (20), and the movable end (5) is fixedly connected with the upward moving groove (20).

6. The experimental bed body applied to the animal MRI experiment as claimed in claim 1, wherein a groove filling projection (21) is disposed right below the moving end (5), the groove filling projection (21) fits the outer dimension of the inner groove (6), sliding rods (22) are connected to the front and rear sides of the groove filling projection (21), the groove filling projection (21) and the sliding rods (22) are connected by welding, a hydraulic rod (23) is disposed at the bottom end of the groove filling projection (21), the groove filling projection (21) and the hydraulic rod (23) are connected by screw threads, and a sliding base (24) is fixedly connected to the bottom end of the hydraulic rod (23).

7. The experimental bed body applied to the animal MRI experiment as claimed in claim 6, wherein a displacement bottom plate (25) is arranged right below the sliding base (24), the sliding base (24) and the displacement bottom plate (25) are tightly attached to each other, a fitting wheel groove (26) is arranged on the upper surface of the displacement bottom plate (25), a sliding structure is formed between the fitting wheel groove (26) and the sliding base (24), an arc-shaped sliding strip (27) is fixed in the middle of the displacement bottom plate (25), the displacement bottom plate (25) and the arc-shaped sliding strip (27) are connected by welding, the displacement bottom plate (25) and the bottom end of the bottom fixing end (7) are connected by welding, and the bottom surface of the arc-shaped sliding strip (27) is arc-shaped.

8. The experimental bed for animal MRI experiments as claimed in claim 4, characterized in that a clamping plate (28) is fixedly connected to the rear side of the fixed arm (15), a fixed connection is formed between the fixed arm (15) and the clamping plate (28), a spring (29) is disposed at the left end of the clamping plate (28), the clamping plate (28) and the spring (29) are connected by welding, an elastic rod (30) is disposed at the left side of the spring (29), a fixed connection is formed between the elastic rod (30) and the spring (29), a rotating brace (31) is connected to the inner side of the protecting end of the clamping plate (28), a rotating structure is formed between the clamping plate (28) and the rotating brace (31), and a fixed connection is formed between the rotating brace (31) and the turning handle (32).

9. The experiment bed body applied to the animal MRI experiment as claimed in claim 1, wherein the right ends of the front and rear sides of the moving end (5) are provided with upward moving grooves (20), the upper surface of the moving end (5) is provided with an inner groove (6), and the inner side surface of the side box end shell (4) is provided with a groove body.

Technical Field

The invention relates to the technical field of experimental articles, in particular to an experimental bed body applied to animal MRI experiments.

Background

The magnetic resonance imaging technology can obtain tomographic images in any direction, and is almost suitable for different diseases of all systems of the whole body. Magnetic resonance imaging has a high soft tissue resolution and is sensitive to detect changes in the proton content of tissue components. The most common nucleus for magnetic resonance, known as nuclear magnetic resonance imaging at the beginning of the birth of the technology, is the nuclear proton of hydrogen atom (1H), because of its strongest signal, and widely exists in human tissues. Another feature of nmr is that the flowing liquid does not produce a signal called flow effect or flow blanking effect. The blood vessels are therefore grey white tubular structures, while the blood is in the non-signal black color. This allows the blood vessel to be easily separated from the soft tissue. The normal spinal cord is surrounded by cerebrospinal fluid, which is black and white dura mater is supported by fat, and mri (magnetic Resonance imaging) is a strong signal structure that makes the spinal cord white. It uses magnetic resonance phenomenon to obtain electromagnetic signal from body and reconstruct body information. Through the development of many years, a set of method for carrying out spatial coding on nuclear magnetic resonance signals is formed, an organism image can be reconstructed by the method, experimental detection can only be carried out on small eastern animals, and the invention solves the problems and provides a novel device.

Disclosure of Invention

In order to solve the problems in the background art, the present invention provides an experimental bed for animal MRI experiments, which has the advantages of being fixed and adjusted according to the body type or characteristics of an animal, and having good stability when being moved.

In order to achieve the purpose, the invention provides the following technical scheme:

the experimental bed body applied to the animal MRI experiment comprises a side protection plate, wherein an inner sliding groove is formed in the inner side surface of the side protection plate, a fixed connection is formed between the inner sliding groove and the side protection plate, a front side baffle is connected to the inner side of the inner sliding groove, a sliding structure is formed between the front side baffle and the inner sliding groove, a side box end shell is arranged right below the side protection plate, a moving end is arranged on the inner side of the side box end shell, a bottom fixing end is arranged on the lower side of the moving end, and a base end is fixed to the outer side of the bottom fixing end.

As a further scheme of the invention: the side box end shell and the moving end form a sliding structure, the rear end fixed with the base end is provided with a stepping table, the base end fixed with the base end is fixedly connected with the stepping table, and the side protection plates are symmetrical about the vertical center line of the moving end.

As a further scheme of the invention: the utility model discloses a side case end shell, including side case end shell, slide bar, side case end shell, right side end and the right side end of threaded bar, the inside of side case end shell is fixed with the slide bar, and is welded connection between slide bar and the side case end shell, the inboard of slide bar is provided with the threaded rod, and constitutes revolution mechanic between threaded rod and the side case end shell, the right side end of threaded rod is provided with the promotion end plate, and promotes for threaded connection between end plate and the threaded rod, the right side end of threaded rod.

As a further scheme of the invention: the inner side of the moving groove is provided with a fixed pasting ring, and the fixed pasting ring and the moving groove form a sliding structure.

As a further scheme of the invention: the movable neck pillow is characterized in that a sliding structure is formed between the movable end and the bottom fixing end, a neck pillow is fixed on the upper surface of the left end of the movable end, the movable end and the neck pillow are fixedly connected, the front side face and the rear side face of the movable end are both provided with an upward moving groove, and the movable end and the upward moving groove are fixedly connected.

As a further scheme of the invention: the groove filling device is characterized in that a groove filling convex block is arranged under the moving end and matched with the overall dimension of the inner groove, sliding rods are connected to the top ends of the front side and the rear side of the groove filling convex block respectively, the groove filling convex block and the sliding rods are connected in a welded mode, a hydraulic rod is arranged at the bottom end of the groove filling convex block, the groove filling convex block and the hydraulic rod are connected in a threaded mode, and a sliding base is fixedly connected to the bottom end of the hydraulic rod.

As a further scheme of the invention: the displacement bottom plate is arranged under the sliding base, the sliding base and the displacement bottom plate are tightly attached to each other, the upper surface of the displacement bottom plate is provided with a fit wheel groove, a sliding structure is formed between the fit wheel groove and the sliding base, an arc-shaped sliding strip is fixed at the middle position of the displacement bottom plate, the displacement bottom plate and the arc-shaped sliding strip are connected in a welded mode, the displacement bottom plate is connected with the bottom end of the bottom fixing end in a welded mode, and meanwhile the whole bottom surface of the arc-shaped sliding strip is arc-shaped.

As a further scheme of the invention: the rear side fixedly connected with clamping board of fixed arm, and be fixed connection between fixed arm and the clamping board, the left side end of clamping board is settled there is the spring, and is welded connection between clamping board and the spring, the left side of spring is provided with the elastic rod, and is fixed connection between elastic rod and the spring, the end inboard of protecting of clamping board is connected with rotatory vaulting pole, and constitutes revolution mechanic between clamping board and the rotatory vaulting pole, be fixed connection between rotatory vaulting pole and the upset handle.

As a further scheme of the invention: the right ends of the front side and the rear side of the moving end are provided with upward moving grooves, the upper surface of the moving end is provided with an inner groove, and the inner side surface of the side box end shell is provided with a groove body.

Compared with the prior art, the invention has the beneficial effects that:

1. according to the invention, the front side baffle plate slides to the lower side bottom surface to be contacted with the moving end through the inner sliding groove on the inner side of the side guard plate, the animal is drawn to the stepping table to move upwards to the moving end along the stepping table, at the moment, the animal lies on the side, the position of the animal is adjusted by moving the fixed adhesive ring in the moving groove at the moving end, the fixed adhesive ring is uncovered, the leg of the animal is fixed, and the head of the animal is contacted with the neck pillow, so that the fixing mode is convenient for being suitable for animals with different body types to fix so as to carry out experimental detection;

2. the invention controls the upper groove filling convex block to move downwards through the hydraulic rod on the top surface of the sliding base, so that the upper surface of the moving end partially sinks to form an inner groove, the animal is drawn to move to the upper part of the moving end, the leg part of the animal is placed in the inner groove, then the structure of the hydraulic rod contracts, during the lifting process, the sliding rod on the groove filling convex block and the upper groove on the side surface of the moving end slide, after the animal is lowered to the moving height, the turning handle is pushed, the inner side component connected with the turning handle slides inwards and is exposed out of the inner groove, the rotating support rod is driven to rotate by rotating the inner groove to support the clamping plate, so that the clamping plate is gradually opened, at the moment, the clamping plate moves the extrusion spring and the elastic rod, the leg part moves to the inner side of the fixing arm, and then the turning handle is released, the structure is convenient for fixing the animal which is inconvenient to lie and stand, so as, the whole body has better fixing adaptability when fixing different types of animals;

3. according to the invention, the driving wheel is driven to rotate by the driving motor in the end shell of the side box, so that the threaded rod is driven to rotate, the pushing end plate is driven to move along with the rotation of the threaded rod by meshing of the threads while the threaded rod rotates, the rear inner side end of the pushing end plate is connected with the end plate combining blocks on the front side surface and the rear side surface of the moving end, so that the moving end is pushed to move forwards by sliding of the pushing end plate on the sliding rod, and when the moving end moves forwards, the displacement bottom plate of the bottom sliding base on the base end is driven by the groove filling convex block to be matched with the wheel groove and the arc-shaped sliding strip and move forwards.

Drawings

FIG. 1 is a schematic front perspective view of the present invention;

FIG. 2 is a schematic view of the side box end shell construction of the present invention;

FIG. 3 is a schematic view of the mobile end of the present invention;

FIG. 4 is a schematic view of the internal perspective structure of the present invention;

fig. 5 is a schematic view of a fixed arm driving structure of the present invention.

In the figure: 1. a side guard plate; 2. an inner chute; 3. a front side baffle; 4. a side box end shell; 5. a mobile terminal; 6. an inner tank; 7. a bottom fixing end; 8. a step on the platform; 9. a base end; 10. a slide bar; 11. a threaded rod; 12. pushing the end plate; 13. a drive motor; 14. a drive wheel; 15. a fixed arm; 16. a neck pillow; 17. a moving groove; 18. fixing the sticking ring; 19. combining end plates; 20. moving the groove upwards; 21. filling the groove bump; 22. a slide bar; 23. a hydraulic lever; 24. a sliding base; 25. a displacement base plate; 26. fitting the wheel groove; 27. an arc-shaped slide bar; 28. clamping the plate; 29. a spring; 30. an elastic rod; 31. rotating the stay bar; 32. the handle is turned over.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1 to 5, in an embodiment of the present invention, an experimental bed body applied to an animal MRI experiment includes a side protection plate 1, an inner sliding groove 2 is formed on an inner side surface of the side protection plate 1, the inner sliding groove 2 and the side protection plate 1 form a fixed connection therebetween, a front side baffle 3 is connected to an inner side of the inner sliding groove 2, a sliding structure is formed between the front side baffle 3 and the inner sliding groove 2, a side box end casing 4 is disposed right below the side protection plate 1, a moving end 5 is disposed on an inner side of the side box end casing 4, a bottom fixed end 7 is disposed on a lower side of the moving end 5, and a bottom base end 9 is fixed on an outer side of the bottom fixed end 7.

In fig. 1, a sliding structure is formed between the side box end shell 4 and the moving end 5, a step 8 is arranged at the rear end fixed with the base end 9, the base end 9 and the step 8 are fixedly connected, and the side guard plate 1 is symmetrical about the vertical center line of the moving end 5.

In some embodiments, the step platform 8 is provided with a shielding plate, the thickness of the shielding plate is greater than a preset thickness value, one end of the shielding plate is rotatably connected with the first fixed shaft at the root of the pedal 8, and the other end of the shielding plate is connected with the pedal 8 through a connecting member, for example, the connecting member may be a component having a locking function, such as a pull ring, a connecting buckle, or the like; the shutter is used for entering when the animal that awaits measuring the interior space of experiment bed body, goes out at the entry and seals, prevents that the animal from escaping and leading to the experiment failure.

Furthermore, one surface of the shielding plate facing the inner space of the experiment bed body is provided with at least two connecting pipes, the connecting pipes rotate to the inner space of the experiment bed body along a second fixed shaft, the second fixed shaft is parallel to the first fixed shaft, and the first fixed shaft is parallel to the width direction of the experiment bed body; each connecting pipe is a telescopic pipe, and a sub-pipe parallel to the second fixed shaft is arranged on each connecting pipe; the sub-tubes being placed within the connection along the length of the connection tube when not in use; when the sub-pipe is used, the sub-pipe can rotate by 90 degrees and extends out to be vertical to the connecting pipe, one end of the sub-pipe is connected with the connecting pipe, the other end of the sub-pipe is connected with a connecting hole in the side protection plate 1, and a plurality of connecting holes are formed in the side protection plate 1; can play and prevent that the animal from escaping and run away and lead to the experiment failure, and according to the volume size adjustment of animal the length of connecting pipe plays the effect of fixed animal.

Further, the preset thickness value refers to a thickness greater than the diameter of the connecting pipe.

Furthermore, the connecting pipe is a hollow pipe, one end of the connecting pipe is communicated with the outside, and the other end of the connecting pipe is communicated with a diet groove in the inner space of the experimental bed body, wherein the diet groove is arranged in the inner space; can inside leading-in diet or other food, the animal of being convenient for on the one hand is fed and is guaranteed the survival of animal and be convenient for the animal and carry out long-time experiment, and on the other hand also is convenient for feed the medicine to the animal and is convenient for the experiment, prevents that dangerous animal from hurting the people.

In fig. 2, a slide rod 10 is fixed inside the side box end shell 4, the slide rod 10 and the side box end shell 4 are connected by welding, a threaded rod 11 is arranged inside the slide rod 10, a rotating structure is formed between the threaded rod 11 and the side box end shell 4, a pushing end plate 12 is arranged at the right side end of the threaded rod 11, the pushing end plate 12 and the threaded rod 11 are connected by threads, a driving wheel 14 is fixed at the right end of the threaded rod 11, and the driving wheel 14 and the threaded rod 11 are connected by welding, so that the pushing assembly is driven.

In fig. 2, a driving motor 13 is disposed at the right side end of the driving wheel 14, a rotating structure is formed between the driving motor 13 and the driving wheel 14, a fixed arm 15 is disposed inside the inner groove 6, a sliding structure is formed between the fixed arm 15 and the inner groove 6, a moving groove 17 is disposed at the front side of the upper surface of the bottom fixed end 7, the moving groove 17 penetrates through the upper surface of the bottom fixed end 7, a fixed attachment ring 18 is disposed inside the moving groove 17, and the sliding structure is formed between the fixed attachment ring 18 and the moving groove 17, so that the stable pushing movement is ensured.

In fig. 3, a sliding structure is formed between the moving end 5 and the bottom fixing end 7, a neck pillow 16 is fixed on the upper surface of the left end of the moving end 5, the moving end 5 and the neck pillow 16 are fixedly connected, upper moving grooves 20 are formed in the front side surface and the rear side surface of the moving end 5, and the moving end 5 and the upper moving grooves 20 are fixedly connected, so that animals of different body types can be fixed conveniently.

In fig. 4, a groove filling projection 21 is disposed right below the moving end 5, the groove filling projection 21 fits the outer dimension of the inner groove 6, sliding rods 22 are connected to the front and rear top ends of the groove filling projection 21, the groove filling projection 21 and the sliding rods 22 are connected by welding, a hydraulic rod 23 is disposed at the bottom end of the groove filling projection 21, the groove filling projection 21 and the hydraulic rod 23 are connected by threads, and a sliding base 24 is fixedly connected to the bottom end of the hydraulic rod 23.

In 4, be provided with displacement bottom plate 25 under sliding base 24, and closely laminate between sliding base 24 and the displacement bottom plate 25, the upper surface of displacement bottom plate 25 is provided with agrees with race 26, and constitute sliding structure between agreeing with race 26 and the sliding base 24, the intermediate position of displacement bottom plate 25 is fixed with arc draw runner 27, and be welded connection between displacement bottom plate 25 and the arc draw runner 27, and displacement bottom plate 25 is welded connection with the bottom of end 7 admittedly, the whole bottom surface of arc draw runner 27 is the arc simultaneously, guarantee bottom stability.

In fig. 5, a clamping plate 28 is fixedly connected to the rear side of the fixing arm 15, the fixing arm 15 is fixedly connected to the clamping plate 28, a spring 29 is disposed at the left end of the clamping plate 28, the clamping plate 28 is welded to the spring 29, an elastic rod 30 is disposed on the left side of the spring 29, the elastic rod 30 is fixedly connected to the spring 29, a rotating stay 31 is connected to the inner side of the protecting end of the clamping plate 28, a rotating structure is formed between the clamping plate 28 and the rotating stay 31, and the rotating stay 31 is fixedly connected to the turning handle 32 to fix the legs of the animal.

In fig. 2, the right ends of the front and rear sides of the movable end 5 are provided with upward moving grooves 20, the upper surface of the movable end 5 is provided with an inner groove 6, and the inner side surface of the side box end shell 4 is provided with a groove body.

A use method of an experiment bed body applied to animal MRI experiments comprises the following steps:

s1, mounting the equipment, namely firstly, placing the equipment at a designated position in the front area of the magnetic resonance equipment, and then sequentially mounting the base end 9, the bottom fixing end 7, the displacement bottom plate 25, the sliding base 24, the groove filling bump 21, the moving end 5, the side box end shell 4, the step platform 8 and the front side baffle 3, so that the upper part and the lower part are fixed through the rotary connection of the nuts and the threaded holes;

s2, preparing, adjusting the bed body equipment according to the animal body shape characteristics before use so as to adjust the fixing position and select the fixing mode according to the animal body shape, putting down the front side baffle 3 along the inner chute 2 after adjustment, moving the moving end 5 to the rightmost end until the moving end cannot move, manually pulling the turning handle 32 to enable the fixing arm 15 and the components thereof to be accommodated to the inner side, and enabling the groove filling projection 21 to rise to be flush with the surface of the moving end 5;

s3, pulling the animals to move to the position above the moving end 5 along the stepping platform 8, changing the fixed positions of the animals with different sizes by sliding the clamping plate 28 on the arc-shaped slide bar 27, so that the head of the animal can be positioned at the neck pillow 16 while the animal lies on the side, and for the animals which are inconvenient to lie down or have large sizes, pushing the movable turning handle 32 to be fixed with the legs of the animal by the height reduced in the inner groove 6 at the moving end 5;

and S4, after the animal is fixed, the front side baffle 3 slides along the inner chute 2, then the moving end 5 moves towards the left end and extends to the specified position of the magnetic resonance equipment, and after the detection is finished, the fixation is cancelled by the steps.

The working principle of the invention is as follows: firstly, the front baffle 3 is slid to the lower bottom surface to contact with the moving end 5 through the inner chute 2 at the inner side of the side guard plate 1, the animal is drawn to the pedal 8 to move upwards along the pedal 8 to the moving end 5, at the moment, the animal lies on the side, the position is adjusted by moving the fixed attachment ring 18 in the moving groove 17 at the moving end 5, the fixed attachment ring 18 is uncovered, the leg of the animal is fixed, and the head of the animal is contacted with the neck pillow 16, the upper groove filling lug 21 is controlled by the hydraulic rod 23 at the top surface of the sliding base 24 to move downwards, so that the upper surface of the moving end 5 partially sinks to form the inner groove 6, the animal is drawn to move to the upper part of the moving end 5, the leg of the animal is placed in the inner groove 6, then the structure of the hydraulic rod 23 is contracted, and the sliding rod 22 on the groove filling lug 21 slides with the upper groove 20 at the side surface of the moving end 5 during the lifting process, after the moving height is reduced, the turning handle 32 is pushed, so that the inner side component connected with the turning handle 32 slides inwards and is exposed from the inner groove 6, the inner groove 6 is rotated to drive the rotating support rod 31 to rotate the rotating support rod 31 to support the clamping plate 28, so that the fixed arms 15 are gradually opened, at the moment, the clamping plate 28 moves the extrusion spring 29 and the elastic rod 30, the leg is moved to the inner side of the fixed arm 15, then the turning handle 32 is loosened, the driving motor 13 in the side box end shell 4 drives the driving wheel 14 to rotate, further drives the threaded rod 11 to rotate, the threaded rod 11 rotates, simultaneously, the pushing end plate 12 is driven to move along with the rotation of the threaded rod 11 through the meshing between the threads, the inner side end of the pushing end plate 12 is connected with the end plate combining blocks 19 on the front side surface and the rear side surface of the moving end 5, further, the sliding end plate 12 slides on the sliding rod 10, and, when the moving end 5 moves forwards, the groove filling lug 21 drives the displacement bottom plate 25 of the bottom sliding base 24 on the base end 9 to be matched with the matching wheel groove 26 and the arc-shaped sliding strip 27 and move forwards.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention are equivalent to or changed within the technical scope of the present invention.