CN111904466A - Special diagnostic bed for color Doppler ultrasound - Google Patents

Abstract

A special diagnostic bed for color Doppler ultrasound includes a bottom plate, a support component is arranged on the top surface of the bottom plate, a bed body is rotatably connected to the top of the support component, the support component is rotatably connected to the bed body, a fence is arranged on the top of the bed body, and the top surface of the bed body is close to the rear side fence One side of the support plate is provided with a support plate movable groove, and a support plate is rotatably connected in the support plate movable groove, the other side of the support plate movable groove is provided with a limit plate, and the side of the bottom surface of the support plate close to the limit plate is provided with a movable top plate assembly. A multi-stage electric push rod is installed on the surface of the bottom plate directly below the movable top plate assembly, and the output end of the multi-stage electric push rod is fixedly connected with the movable assembly; the doctor can adjust the support assembly by himself, and then adjust the overall height of the bed body, and can also make the bed body Tilt, and then change the patient's posture, which is convenient for the doctor to check, and the patient only needs to hold the fence; during the sitting examination, the patient can lean on the body through the support plate, thereby reducing the patient's discomfort and increasing the comfort of the patient's testing process.

Description

A special diagnostic bed for color Doppler ultrasound

technical field

The invention relates to a diagnostic bed, in particular to a diagnostic bed for color ultrasound.

Background technique

Color Doppler Ultrasound: Color Doppler Ultrasound generally uses autocorrelation technology for Doppler signal processing. The blood flow signal obtained by autocorrelation technology is color-coded and superimposed on a two-dimensional image in real time, that is, color Doppler ultrasound is formed. blood flow image. It can be seen that color Doppler ultrasound not only has the advantages of two-dimensional ultrasound structural images, but also provides rich information on hemodynamics. Sexual Angiography".

When using color Doppler ultrasound to examine a patient, usually before the color Doppler ultrasound examination, the patient should lie down for the examination, and after the examination is completed, the patient will get up on their own. However, due to the different lying position and posture of the patient, the patient also needs to adjust the position, which will cause inconvenience to the doctor's examination; at the same time, when examining certain parts, the patient needs to sit up and stand up, but the existing examination bed has no supporting function on the one hand. , the patient can only maintain the sitting posture by himself. When some patients with limited mobility are examined, the sitting and standing examination is very inconvenient; , When the bed board is raised too high, it will cause discomfort to the patient's legs.

In view of the above problems, a special diagnostic bed for color Doppler ultrasound is required to meet the needs of patients for color Doppler ultrasound examination.

SUMMARY OF THE INVENTION

The purpose of the present invention is to overcome the deficiencies in the prior art, and to provide a special diagnostic bed for color ultrasound, where the doctor can adjust the patient's position and posture by himself.

The purpose of the present invention is to achieve this: a special diagnostic bed for color ultrasound, comprising a bottom plate, the bottom plate is a rectangular structure, and the corners of the bottom surface of the bottom plate are provided with universal wheels, characterized in that: the top surface of the bottom plate is provided with a universal wheel. There is a support assembly, the top of the support assembly is rotatably connected with a bed, and the support assembly includes a first electric push rod, a second electric push rod, a third electric push rod, and a fourth electric push rod, which are respectively located on the top of the bottom plate. At the four corners of the surface, the first electric push rod, the second electric push rod, the third electric push rod, and the fourth electric push rod are connected to the The bed body is connected, and the top edge of the bed body is provided with a fence, the fences on the left and right sides of the bed body are divided into a front side fence and a rear side fence, and the front side fence and the rear side fence are rotatably connected , the end of the rear side fence away from the front side fence is provided with a fence fixing chute, and a fence inserting plate is slidably connected in the fence fixing chute, and the top surface of the bed body directly below the fence inserting plate is opened There is a fence fixing slot, the end of the top surface of the bed body close to the front side fence is provided with a bed headrest, and the side of the top surface of the bed body close to the rear side fence is provided with a support plate movable slot, the A support plate is rotatably connected in the movable slot of the support plate, a limit plate is arranged on the other side of the movable slot of the support plate, a movable top plate assembly is arranged on the side of the bottom surface of the support plate close to the limit plate, and the movable top plate A multi-stage electric push rod is installed on the surface of the bottom plate directly below the assembly, the output end of the multi-stage electric push rod is fixedly connected with the movable top plate assembly, and a storage slot is opened on the side wall of the bed body. There are storage chutes on both sides, and a couplant storage box is slidably connected between the two storage chutes. A first handle is provided on the outside of the couplant storage box. The wall is provided with a button through-slot, and both sides of the button through-slot are provided with a button chute, a button pull plate is slidably connected between the two button pull holes, and a second handle is arranged on the outer side of the button pull plate, A first electric push rod raising button, a second electric push rod raising button, a third electric push rod raising button, a fourth electric push rod raising button, and the first electric push rod falling button are installed on the push button pull plate button, the second electric push rod back button, the third electric push rod back down button, the fourth electric push rod back down button, the multi-level electric push rod up button, the multi-level electric push rod back down button, the top surface of the bottom plate is provided with An electrical box, an electrical box switch door is hinged on one side of the electrical box, a controller is installed in the electrical box, the controller, the first electric push rod, the second electric push rod, and the first electric push rod The three electric push rods, the fourth electric push rod, and the multi-stage electric push rod are all powered by external power sources, and the controller is connected to the first electric push rod, the second electric push rod, and the third electric push rod. Three electric push rods, the fourth electric push rod, the multi-stage electric push rod, the first electric push rod lift button, the second electric push rod lift button, the third electric push rod Raise button, the fourth electric push rod lift button, the first electric push rod back down button, the second electric push rod back down button, the third electric push rod The push rod back button, the fourth electric push rod back button, the multi-stage electric push rod up button, and the multi-level electric push rod back button are all connected through a circuit.

Further, a plurality of rectangular through holes are equidistantly opened on the fence.

Further, an extension plate is hinged on the bottom surface of the support plate close to the limit plate, and a groove is opened on the bottom surface of the support plate close to the side where the limit plate is hinged, and a groove is provided in the groove. A telescopic rod, the extending end of the telescopic rod is rotatably connected with an extension limit plate.

Further, an extension plate headrest is provided on the side of the extension plate away from the limiting plate.

Further, an extension plate fixing device is provided on the bottom surface of the support plate close to the edge of the extension plate.

Further, the movable roof assembly is a U-shaped structure, the movable roof assembly includes a fixed roof and a movable roof, and two fixed roofs are symmetrically arranged on one side of the bottom surface of the support plate close to the limit plate, The other end of the fixed top plate is provided with a top plate chute, and the top plate slider is slidably connected in the top plate chute, and the other end of the top plate slider is provided with the movable top plate, and the middle part of the bottom surface of the movable top plate is connected to the bottom surface of the movable top plate. The output ends of the multi-stage electric push rods are fixedly connected.

Advantages of the present invention:

1. The doctor can adjust the extension length of the supporting components, namely the first electric push rod, the second electric push rod, the third electric push rod, and the fourth electric push rod, to adjust the overall height of the bed; at the same time, the first electric push rod The output ends of the rod, the second electric push rod, the third electric push rod, and the fourth electric push rod are located at the four corners of the bed, and one of the electric push rods can be adjusted to tilt the bed, thereby changing the patient's condition. The posture is convenient for the doctor to perform the examination, while the patient only needs to hold the fence.

2. When it is necessary to sit and stand for examination, open the rear fence to make the patient sit on the side of the bed, and then the doctor can press the corresponding button to raise the multi-section electric push rod, and then lift the support plate, and the patient can pass the The support plate to lean on the body, on the one hand, reduces the discomfort of the patient's legs, and at the same time can also support the extension plate, which further increases the comfort of the patient's examination process; When sitting on one side of the bed, the process of going to bed for the patient is omitted, and it is also convenient for the doctor to check.

Description of drawings

Figure 1 is a schematic diagram of the structure of a special diagnostic bed for color ultrasound.

Figure 2 is a schematic diagram of the partial structure of the support plate.

FIG. 3 is a schematic cross-sectional structural diagram of a movable roof assembly.

FIG. 4 is a schematic diagram of the opening structure of the couplant storage box.

FIG. 5 is a schematic diagram of the opening structure of the button pull plate.

Figure 6 is a schematic diagram of the open structure of the electrical box.

FIG. 7 is a schematic diagram of the use structure of the support plate.

FIG. 8 is a schematic diagram of the use structure of the extension board.

FIG. 9 is a schematic diagram of the use structure of the extension limit plate.

Figure 10 is a schematic diagram of the use structure of the fence insert.

In the picture: 1. Bottom plate, 2. Universal wheel, 3. Support assembly, 4. Bed body, 5. The first electric push rod, 6. The second electric push rod, 7. The third electric push rod, 8. The first electric push rod Four electric push rods, 9. Fence, 10. Rectangular through hole, 11. Front fence, 12. Rear fence, 13. Fence fixing chute, 14. Fence insert, 15. Fence fixing slot, 16. Bed Headrest, 17. Support plate movable groove, 18. Support plate, 19. Limit plate, 20. Extension plate, 21. Groove, 22. Telescopic rod, 23. Extension limit plate, 24. Extension plate headrest, 25. Extension plate fixing device, 26. Active top plate assembly, 27. Multi-stage electric push rod, 28. Fixed top plate, 29. Active top plate, 30. Top plate chute, 31. Top plate slider, 32. Storage slot, 33. Storage Chute, 34. Coupling Storage Box, 35. First Handle, 36. Button Channel, 37. Button Chute, 38. Button Pull Plate, 39. Second Handle, 40. First Electric Push Rod Raising Button , 41. The second electric push rod lift button, 42. The third electric push rod lift button, 43. The fourth electric push rod lift button, 44. The first electric push rod back button, 45. The second electric push rod Rod drop button, 46. Third electric push rod drop button, 47. Fourth electric push rod drop button, 48. Multi-stage electric push rod lift button, 49. Multi-stage electric push rod drop button, 50. Electrical box, 51. Electrical box switch door, 52. Controller.

Detailed ways

In order to make those skilled in the art better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described implementation The examples are only a part of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the scope of protection of the present application.

The embodiment of the present application provides a special diagnostic bed for color ultrasound.

Embodiment 1, as shown in Figures 1-10, a diagnostic bed dedicated to color ultrasound, comprising a bottom plate 1, and the bottom plate 1 has a rectangular structure. The corners of the bottom surface of the bottom plate 1 are provided with universal wheels 2, and the universal wheels 2 are preferably casters from Shanghai Bidi Industrial Aluminum Fittings Co., Ltd., and the model is CE-W75D-12C.

The top surface of the bottom plate 1 is provided with a support assembly 3, the top of the support assembly 3 is rotatably connected with a bed 4, and the support assembly 3 includes a first electric push rod 5, a second electric push rod 6, and a third electric push rod 7. The fourth electric push rod 8 is respectively located at the four corners of the top surface of the bottom plate 1, the first electric push rod 5, the second electric push rod 6, and the third electric push rod 7 . The fourth electric push rod 8 is powered by an external power supply. The first electric push rod 5, the second electric push rod 6, the third electric push rod 7, and the fourth electric push rod 8 are all of the same model, preferably the parallel of Shanghai Beixi Electromechanical Equipment Co., Ltd. Type electric cylinder, model IBX25-012.

The first electric push rod 5 , the second electric push rod 6 , the third electric push rod 7 , and the fourth electric push rod 8 are all connected to the bed body 4 through a universal ball joint link. , through the extended length of the first electric push rod 5, the second electric push rod 6, the third electric push rod 7, and the fourth electric push rod 8, on the one hand, the bed can be adjusted The overall height of 1; on the other hand, the inclination angle of the bed 1 can be adjusted by raising a certain electric push rod, so as to change the posture and angle of the patient lying on the top surface of the bed 1, which is convenient for the doctor to perform color Doppler ultrasound. Examination, especially for some patients with limited mobility, is very convenient.

The top edge of the bed body 1 is provided with a fence 9 , and a plurality of rectangular through holes 10 are equidistantly opened on the fence 9 . When the patient is lying flat, hold the fence 9 so that the doctor can fix his body when adjusting the bed body 4 . The fences 9 on the left and right sides of the bed body 4 are divided into a front fence 10 and a rear fence 11. The front fence 11 and the rear fence 12 are rotatably connected, and the rear fence 12 can follow The connection is turned to open. When the patient needs to sit and stand for examination, they can sit here and extend their legs out of the bed body 4 .

One end of the rear side fence 12 away from the front side fence 11 is provided with a fence fixing chute 13 , and a fence inserting board 14 is slidably connected in the fence fixing chute 13 . The top surface of the bed body 4 is provided with a fence fixing groove 15 . When the rear fence 12 is closed, the fence insert 14 is inserted into the fence fixing slot 15; when the rear fence 12 needs to be opened, the fence insert 14 only needs to be lifted up and rotated. The rear side fence 12 can be described. One end of the top surface of the bed body 4 close to the front side fence 11 is provided with a bed body headrest 16 , which is used to place the head of the patient when the patient is lying flat for examination, thereby increasing the comfort during the examination.

The side of the top surface of the bed body 4 close to the rear side fence 12 is provided with a support plate movable slot 17 , and the shape of the support plate movable slot 17 is rectangular. A supporting plate 18 is rotatably connected in the movable groove 17 of the supporting plate. A limiting plate 19 is disposed on the other side of the movable slot 17 of the supporting plate to limit the position of the supporting plate 18 so that the supporting plate 18 can only rotate upwards around its rotational connection. An extension plate 20 is hinged on one side of the bottom surface of the support plate 18 close to the limit plate 19 , so that the patient can lean on the head when sitting and standing. A groove 21 is formed on the side of the bottom surface of the support plate 18 close to the hinge joint with the limit plate 20 , a telescopic rod 22 is arranged in the groove 21 , and the extension end of the telescopic rod 22 is rotatably connected with an extension rod. Limiting plate 23. When the extension plate 23 needs to be used, rotate the extension plate 20 to make the surface of the extension plate 20 flush with the surface of the support plate 18 , and then remove the extension limit plate 23 from the groove 21 Pull out and rotate the extension limit plate 23 so that the extension limit plate 23 and the groove 21 are at 90°. Further, the extension plate 20 is fixed by the extension limit plate 23 to restrict the rotation of the extension plate 20 . An extension plate headrest 24 is provided on the side of the extension plate 20 away from the limit plate 19 to increase the comfort of the patient's head when leaning on. An extension plate fixing device 25 is provided on the bottom surface of the support plate 18 near the edge of the extension plate 20 . When the extension plate 20 is not in use, the extension plate 20 is fixed on the bottom surface of the support plate 18 by the extension plate fixing device 25 and cannot be rotated.

A movable top plate assembly 26 is provided on the side of the bottom surface of the support plate 18 close to the limit plate 19 , and a multi-stage electric push rod 27 is installed on the surface of the bottom plate 1 directly below the movable top plate assembly 26 . The output end of the electric push rod 27 is fixedly connected with the movable top plate assembly 26 . The multi-stage electric push rod 27 pushes up the support plate 18 through the movable top plate assembly 26 . The multi-stage electric push rod 27 is powered by an external power supply, and the multi-stage electric push rod 27 is preferably a multi-stage electric push rod of Beijing Tianyu Innovation Technology Co., Ltd. The number of sections is preferably 5 sections. The movable top plate assembly 26 is a U-shaped structure, and the movable top plate assembly 26 includes a fixed top plate 28 and a movable top plate 29. The bottom surface of the support plate 18 close to the limit plate 19 is symmetrically provided with two said The top plate 28 is fixed, the other end of the fixed top plate 28 is provided with a top plate chute 30, the top plate sliding groove 30 is slidably connected with the top plate slider 31, and the other end of the top plate slider 31 is provided with the movable The top plate 29 , the middle part of the bottom surface of the movable top plate 29 is fixedly connected with the output end of the multi-stage electric push rod 27 . When the multi-stage electric push rod 27 is lifted, the movable top plate 29 moves upward in the top plate chute 30 through the top plate slider 31, and when the top position of the top plate chute 30 is reached, the The fixed top plate 28 is jacked up, and finally drives the support plate 18 at the top of the fixed top plate 28 to rotate upward along the connection with the bed body 4 , so that the patient can lean on during sitting and standing examination. When the support plate 18 is not in use, the multi-stage electric push rod 27 falls back to drive the support plate 18 back down. When the support plate 18 is flush with the surface of the bed 4 , the support plate 18 The movement is restricted by the limiting plate 19, and the falling is stopped. At the same time, the fixed top plate 28 also stops moving, and the movable top plate 29 continues to fall back with the multi-stage electric push rod 27, and the top plate slider 31 moves down along the top plate chute 30. After the multi-stage electric push rod 27 is completed to fall back, the movable top plate 29 also falls back into place correspondingly.

A storage slot 32 is formed on the side wall of the bed body 4 , and a storage chute 33 is opened on both sides of the storage slot 32 , and a coupling agent storage box 34 is slidably connected between the two storage chute 33 for storing For the couplant used in color ultrasound inspection, a first handle 35 is provided on the outside of the couplant storage box 34 to pull out the couplant storage box 34 .

The side wall of the bed body 4 on one side of the storage slot 32 is provided with a button through slot 36, and both sides of the button through slot 36 are provided with a button slide slot 37, and the two button slide slots 37 are slidably connected. There is a button pull plate 38 , and a second handle 39 is provided on the outer side of the button pull plate 38 for pulling out the button pull plate 38 . A first electric push rod lifting button 40, a second electric push rod lifting button 41, a third electric push rod lifting button 42, a fourth electric push rod lifting button 43, a third electric push rod lifting button 42, a fourth electric push rod lifting button 43, An electric push rod drop button 44, a second electric push rod drop button 45, a third electric push rod drop button 46, a fourth electric push rod drop button 47, a multi-stage electric push rod lift button 48, a multi-stage electric push rod The fall button 49 respectively controls the rise and fall of the corresponding electric push rod.

An electrical box 50 is arranged on the top surface of the bottom plate, and an electrical box switch door 51 is hinged on one side of the electrical box 50. A controller 52 is installed in the electrical box 50, and the controller 52 is powered by an external power supply. The controller 52 is preferably a standard PLC of Junchuang Automation Technology Co., Ltd., whose model is JM-60P-D.

The controller 52 and the first electric push rod 5 , the second electric push rod 6 , the third electric push rod 7 , the fourth electric push rod 8 , and the multi-stage electric push rod 27 , the first electric push rod lift button 40, the second electric push rod lift button 41, the third electric push rod lift button 42, the fourth electric push rod lift button 43, the The first electric push rod drop button 44, the second electric push rod drop button 45, the third electric push rod drop button 46, the fourth electric push rod drop button 47, the multi-stage electric push rod The up button 48 and the multi-stage electric push rod down button 49 are all connected through a circuit.

When the present invention is in use:

Examination lying flat. The patient can lie flat on the bed surface, and the doctor can press the corresponding button to adjust the first electric push rod, the second electric push rod, the third electric push rod, and the fourth electric push rod The height of the push rod is used to adjust the overall height of the bed; it is also possible to adjust a certain electric push rod to tilt the bed, thereby changing the patient's posture, which is convenient for the doctor to check, and the patient only needs to hold the fence. .

Sit and stand examination. Lift the fence insert, turn the rear fence, and then open the fence, where the patient sits and extends his legs from the bed. When the patient needs to lean, press the corresponding button, and the support plate is lifted up by the multi-stage electric push rod for the patient to lean on. When the leaning area is not enough and the extension board needs to be used, open the extension board fixing device, rotate the extension board along the connection with the support board, and make the extension board and the support board surface level The extension plate is fixed by the extension limit plate, and the rotation of the extension plate is restricted.

It should be noted that, in this document, relational terms such as "first" and "second" etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply these There is no such actual relationship or sequence between entities or operations. Moreover, the terms "comprising", "comprising" or any other variation thereof are intended to encompass a non-exclusive inclusion such that a process, method, article or device that includes a list of elements includes not only those elements, but also includes not explicitly listed or other elements inherent to such a process, method, article or apparatus.

Other embodiments of the present application will readily occur to those skilled in the art upon consideration of the specification and practice of the application disclosed herein. This application is intended to cover any variations, uses or adaptations of this application that follow the general principles of this application and include common knowledge or conventional techniques in the technical field not disclosed in this application . The specification and examples are to be regarded as exemplary only, with the true scope and spirit of the application being indicated by the claims. It is to be understood that the present application is not limited to the precise structures described above and illustrated in the accompanying drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the application is limited only by the appended claims.

Claims (6)

1. The utility model provides a special diagnostic bed of color Doppler ultrasound, includes the bottom plate, the bottom plate is the rectangle structure, the edge of bottom plate bottom surface is provided with universal wheel, its characterized in that: the top surface of the bottom plate is provided with a supporting component, the top of the supporting component is rotationally connected with a bed body, the supporting component comprises a first electric push rod, a second electric push rod, a third electric push rod and a fourth electric push rod which are respectively positioned at 4 corners of the top surface of the bottom plate, the first electric push rod, the second electric push rod, the third electric push rod and the fourth electric push rod are all connected with the bed body through universal ball head connecting rods, the edges of the top of the bed body are provided with fences, the fences on the left side and the right side of the bed body are divided into a front side fence and a rear side fence, the front side fence is rotationally connected with the rear side fence, one end of the rear side fence, far away from the front side fence, is provided with a fence fixing chute, the fence fixing chute is internally connected with an inserting plate fence in a sliding manner, and a fence, a bed headrest is arranged at one end of the top surface of the bed body close to the front side fence, a support plate movable groove is formed in one side of the top surface of the bed body close to the rear side fence, a support plate is connected in the support plate movable groove in a rotating mode, a limit plate is arranged at the other side of the support plate movable groove, a movable top plate assembly is arranged at one side of the bottom surface of the support plate close to the limit plate, a multi-stage electric push rod is arranged on the surface of the bottom plate right below the movable top plate assembly, the output end of the multi-stage electric push rod is fixedly connected with the movable top plate assembly, a storage groove is formed in the side wall of the bed body, storage chutes are formed in two sides of the storage groove, a couplant storage box is connected between the two storage chutes in, the push-button switch comprises a push-button through groove, push-button sliding grooves are formed in two sides of the push-button through groove, a push-button pulling plate is connected between the push-button sliding grooves in a sliding mode, a second handle is arranged on the outer side of the push-button pulling plate, a first electric push rod lifting button, a second electric push rod lifting button, a third electric push rod lifting button, a fourth electric push rod lifting button, a first electric push rod falling button, a second electric push rod falling button, a third electric push rod falling button, a fourth electric push rod falling button, a multi-stage electric push rod lifting button and a multi-stage electric push rod falling button are mounted on the push-button pulling plate, an electric box is arranged on the top surface of the bottom plate, an electric box switch door is hinged to one side of the electric box, a controller is mounted in the electric box, the multistage electric push rod all external power source supplies power, the controller with first electric push rod the second electric push rod the third electric push rod the fourth electric push rod the multistage electric push rod the first electric push rod raises the button, the second electric push rod raises the button the third electric push rod raises the button the fourth electric push rod raises the button first electric push rod falls the button, the second electric push rod falls the button the third electric push rod falls the button the fourth electric push rod falls the button the multistage electric push rod raises the button, multistage electric push rod falls the button all through circuit connection.

2. The special diagnostic bed for color Doppler ultrasound according to claim 1, characterized in that: a plurality of rectangular through holes are formed in the fence at equal intervals.

3. The special diagnostic bed for color Doppler ultrasound according to claim 1, characterized in that: the supporting plate is characterized in that an extension plate is hinged to one side, close to the limiting plate, of the bottom surface of the supporting plate, a groove is formed in one side, close to the hinged position of the limiting plate, of the bottom surface of the supporting plate, a telescopic rod is arranged in the groove, and the extending end of the telescopic rod is rotatably connected with the extension limiting plate.

4. The special diagnostic bed for color Doppler ultrasound according to claim 3, characterized in that: one side of the extension plate, which is far away from the limiting plate, is provided with an extension plate headrest.

5. The special diagnostic bed for color Doppler ultrasound according to claim 4, characterized in that: the edge that the backup pad bottom surface is close to extend the board is provided with extension board fixing device.

6. The special diagnostic bed for color Doppler ultrasound according to claim 1, characterized in that: the movable top plate assembly is of a U-shaped structure and comprises a fixed top plate and a movable top plate, the bottom surface of the supporting plate is close to two symmetrical parts on one side of the limiting plate, the fixed top plate is provided with a top plate sliding groove, the other end of the fixed top plate is provided with a top plate sliding block, the top plate sliding groove is connected with a top plate sliding block in a sliding mode, the other end of the top plate sliding block is provided with the movable top plate, and the middle of the bottom surface of the movable top plate is fixedly connected with the output end of.

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