Intelligent remote transmission type water meter

Abstract

The invention relates to the field of water meters, in particular to an intelligent remote transmission type water meter which comprises a water meter body, a supporting shell is arranged in front of the water meter body, a meter supporting piece is arranged between the supporting shell and the water meter body, square frames are installed at the two ends of the supporting shell in a penetrating and sliding mode, and ring pieces are coaxially arranged at connectors of the two sides of the water meter body. The annular pieces are connected with the square frames, adaptive insertion shells are fixedly installed at the opposite ends of the two square frames, adaptive insertion plates are slidably installed in the adaptive insertion shells, the adaptive insertion plates penetrate out of the ends of the adaptive insertion shells, and concave insertion blocks are fixedly installed at one ends of the adaptive insertion plates. The water meter supporting frame facilitates installation, can adapt to installation of pipe frames at different positions away from the water meter main body, effectively improves flexibility, and meanwhile facilitates assembly of the water meter main body and the water meter supporting frame.

Description

Technical Field

[0001] The present invention relates to the field of water meters, and in particular to an intelligent remote water meter. Background Art

[0002] Smart remote water meters are a new type of water meter that integrates the Internet of Things, sensors, and data communication technologies. Compared to traditional mechanical water meters, they can automatically collect water usage, remotely transmit data, and analyze data, significantly improving the efficiency and intelligence of water supply management. Due to their heavy weight, some large-diameter smart remote water meters require fixing the meter itself after connection to the water pipe to reduce stress on the pipe.

[0003] However, in the actual fixing process, it is necessary to first drill a hole in the wall and install a bracket before the water meter itself can be fixed. The process is quite cumbersome, which makes the installation inconvenient. At the same time, the water meter itself can only be fixed after the water pipe and the water meter are connected. The two cannot be completed at the same time, which further causes installation inconvenience. Summary of the Invention

[0004] The purpose of the present invention is to solve the shortcomings of the background technology and to propose an intelligent remote water meter.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is: an intelligent remote water meter, comprising a water meter main body, a supporting shell is provided in the front of the water meter main body, a supporting member is provided between the supporting shell and the water meter main body, both ends of the supporting shell are penetrated by a square frame for sliding installation, an annular piece is coaxially provided at the interface on both sides of the water meter main body, the annular piece is connected to the square frame, the opposite ends of the two square frames are fixedly installed with an adaptive plug shell, an adaptive plug plate is slidably installed inside the adaptive plug shell, the adaptive plug plate passes through the end of the adaptive plug shell, one end of the adaptive plug plate is fixedly installed with a concave plug block, the slot of the concave plug block is adapted to the pipe rack of the water pipe, the rear end of the concave plug block is fixedly installed with a top hoop seat, the opening of the top hoop seat is adapted to the U-shaped pipe clamp on the pipe rack, the other end of the adaptive plug plate is penetrated by a threaded column for rotatable installation, the threads at both ends of the threaded column are symmetrically arranged, and the two ends of the threaded column are screwed with adjustment splints, and the two adjustment splints are respectively pressed against the upper and lower ends of the adaptive plug shell.

[0006] Preferably, sealing rubber is provided on both sides of the ring piece, and through holes aligned with the mounting holes on the water meter body are opened on the ring piece and the sealing rubber. A fixed ring frame is fixedly installed on the front end of the ring piece, and the end of the fixed ring frame is fixed to the square frame.

[0007] Preferably, the adjustment splint is provided with a rubber pad relative to the end face of the adaptable plug shell, a T-shaped block extends from the side of the adjustment splint, a T-shaped shell is slidably mounted on the outer surface of the T-shaped block, and the lower end of the T-shaped shell is fixed to the adaptable plug plate.

[0008] Preferably, two positioning caps are slidably mounted inside the support shell, and opposite ends of the two positioning caps are fixed to two square frames respectively. A plurality of post-moving claws are fixedly mounted in a circular array on the upper end of the threaded column.

[0009] Preferably, the meter supporting member includes a meter supporting frame arranged below the water meter body, the supporting shell is connected to the meter supporting frame, and two meter supporting rings are symmetrically installed in the middle of the lower end of the water meter body, and the upper parts of the two meter supporting rings are fixedly installed with vertical frames, and the opposite ends of the two vertical frames are fixedly installed with slot blocking frames, and the two slot blocking frames are clamped to the middle position of the upper end of the water meter body from the front and back respectively, and a pressure lug extends from the middle of the upper end of the slot blocking frame, and the pressure lug is pressed against the upper end of the water meter body.

[0010] Preferably, the lower end of the rear upright frame is fixed to the meter support frame, and the lower end of the front upright frame is fixedly installed with a Y-shaped frame, and the Y-shaped frame is slidably connected to the meter support frame. Square cavities are opened at both ends of the Y-shaped frame, and a fixed plate is elastically installed between the two square cavities. A trapezoidal solid block extends from the upper end of the meter support frame, and the vertical surface of the trapezoidal solid block is against the middle of the front end of the fixed plate.

[0011] Preferably, a connecting sleeve is fixedly installed on the front end of the watch support frame, and the connecting sleeve is embedded in the middle of the outer surface of the support shell. A dial frame is fixedly installed between the two ends of the fixed plate, and a dial ear extends from the middle of the dial frame. An inclined top groove is opened in the middle of the rear end of the fixed plate.

[0012] Preferably, a guide column is embedded between the upper and lower end surfaces of the interior of the square cavity, the fixed plate is slidably installed on the outer surface of the guide column, a compression spring is wound around the outside of the guide column, one end of the compression spring is fixed to the inner upper end surface of the square cavity, and the other end of the compression spring is fixed to the upper end of the fixed plate, and sliding grooves are provided on both sides of the watch support frame, and a sliding ear is slidably installed inside the sliding groove, and the upper end of the sliding ear is fixed to the Y-shaped frame.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. When the interface of the water meter body is connected to the water pipe, the ring piece will move toward the interface of the water meter body under extrusion. At this time, the square frame will be driven to move synchronously toward the inside of the support shell, and then drive the concave plug and the top hoop seat on the adaptor plate to move toward the pipe rack. When the interface of the water meter body and the water pipe are completely locked by bolts, the ring piece will be firmly clamped between the interface of the water meter body and the water pipe, and then the concave plug will be clamped on the pipe rack and the top hoop seat will be tightly inserted on the U-shaped pipe clamp to limit the four directions of the water meter body and make the water meter body firmly fixed. In the process, the water meter body can be fixed by using the original pipe rack and U-shaped pipe clamp on the wall, without the need for additional The bracket is fixed on the wall, which effectively facilitates the installation. At the same time, the water meter body can be fixed simultaneously during the process of connecting the interface of the water meter body and the water pipe. No secondary operation is required, which further facilitates the installation. By rotating the threaded column, the two adjusting clamps can move in opposite directions under the action of the symmetrical arrangement of the threads at both ends of the threaded column to disengage from the adapting plug shell, so that the adapting plug plate can slide in the adapting plug shell without the clamping of the adjusting clamp plate, thereby driving the concave plug block and the top hoop seat to move, so as to adjust the position of the concave plug block and the top hoop seat to adapt to the installation of the pipe rack at different positions away from the water meter body, thereby improving flexibility.

[0015] 2. Place the water meter body between the two vertical frames, and then push the Y-shaped frame to slide on the meter supporting frame. When the fixed plate passes the trapezoidal solid block, the fixed plate will move up under the dual action of the inclined surface of the inclined top groove and the inclined surface of the trapezoidal solid block. At this time, the compression spring is deformed. When the fixed plate passes the trapezoidal solid block, the compression spring will push the fixed plate to reset so that the fixed plate can be fixed on the trapezoidal solid block, so that the two meter supporting rings can be closed. At the same time, the pressure ear presses the water meter body into the two closed meter supporting rings, so that the meter supporting rings can be used to support the water meter body. At the same time, the two slot blocking frames are clamped to the middle position of the upper end of the water meter body from the front and back respectively to firmly fix the water meter body on the meter supporting ring. In this way, the water meter body and the meter supporting frame can be assembled together. The process is simple to operate and effectively facilitates the assembly of the water meter body and the meter supporting frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a structural diagram of an intelligent remote water meter according to the present invention;

[0017] Figure 2 This is an internal view of a support shell of an intelligent remote water meter according to the present invention;

[0018] Figure 3 This is a schematic diagram of the adaptable plug housing of an intelligent remote water meter according to the present invention;

[0019] Figure 4 This invention is a kind of intelligent remote water meter Figure 3 A magnified view of middle A;

[0020] Figure 5 This is a schematic diagram of a meter support ring of an intelligent remote water meter according to the present invention;

[0021] Figure 6 This is a schematic diagram of a Y-shaped frame of an intelligent remote water meter according to the present invention;

[0022] Figure 7 A schematic diagram of a fixing plate of an intelligent remote water meter according to the present invention;

[0023] Figure 8 This is a usage diagram of an intelligent remote water meter according to the present invention;

[0024] Figure 9 This is a schematic diagram of the pipe rack of an intelligent remote water meter according to the present invention.

[0025] In the figure: 1. water meter body; 2. slot resistance frame; 3. pressure ear; 4. meter support ring; 5. connecting sleeve; 6. support shell; 7. square frame; 8. fixed ring frame; 9. ring piece; 10. sealing rubber; 11. adapting plug shell; 12. trapezoidal solid block; 13. slide groove; 14. sliding ear; 15. Y-shaped frame; 16. square cavity; 17. compression spring; 18. guide column; 19. fixing plate; 20. dial frame; 21. vertical frame; 22. meter support frame; 23. inclined top groove; 24. positioning cap; 25. adapting plug plate; 26. top hoop seat; 27. concave plug block; 28. adjusting splint; 29. ​​rubber pad; 30. T-shaped shell; 31. T-shaped block; 32. threaded column; 33. dial column claw; 34. dial ear; 35. water pipe; 36. U-shaped pipe clamp; 37. pipe rack. DETAILED DESCRIPTION

[0026] The following description is intended to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are merely examples, and those skilled in the art may conceive of other obvious variations.

[0027] like Figures 1-9The intelligent remote water meter shown in the figure includes a water meter body 1, a support shell 6 is provided in front of the water meter body 1, a support member is provided between the support shell 6 and the water meter body 1, and a square frame 7 is slidably installed at both ends of the support shell 6. The support shell 6 serves to slide the square frame 7. The interfaces on both sides of the water meter body 1 are coaxially provided with a ring piece 9, which is connected to the square frame 7. The ring piece 9 can drive the square frame 7 to move toward the inside of the support shell 6 when the interface of the water meter body 1 is connected to the water pipe 35. The opposite ends of the two square frames 7 are fixedly installed with an adaptor shell 11 , an adaptable plug plate 25 is slidably installed inside the adaptable plug shell 11, and the cooperation between the adaptable plug shell 11 and the adaptable plug plate 25 can adapt to the pipe rack 37 at different positions away from the water meter body 1 for installation. The adaptable plug plate 25 passes through the end of the adaptable plug shell 11, and one end of the adaptable plug plate 25 is fixedly installed with a concave plug block 27. The slot of the concave plug block 27 is adapted to the pipe rack 37 of the water pipe 35, which can ensure that the concave plug block 27 and the pipe rack 37 will not shake after being engaged. The rear end of the concave plug block 27 is fixedly installed with a top hoop seat 26, and the opening of the top hoop seat 26 The mouth is adapted to the U-shaped pipe clamp 36 on the pipe rack 37, which can ensure that there will be no shaking after the top hoop seat 26 and the U-shaped pipe clamp 36 are engaged. The concave plug-in blocks 27 on both sides are engaged with the pipe rack 37 to limit the left and right, up and down positions of the water meter body 1. The top hoop seat 26 and the U-shaped pipe clamp 36 are engaged to limit the front and back positions of the water meter body 1, so that the water meter body 1 can be fixed. The other end of the adaptable plug-in plate 25 is rotatably installed with a threaded column 32. The threads at both ends of the threaded column 32 are symmetrically arranged, which can allow the two adjusting splints 28 to be aligned. In the reverse movement, both ends of the threaded column 32 are tightened with an adjusting splint 28, and the two adjusting splints 28 are respectively pressed against the upper and lower ends of the adaptable plug shell 11. By rotating the threaded column 32, the two adjusting splints 28 can be moved in opposite directions to disengage from the adaptable plug shell 11, so that the adaptable plug plate 25 can slide in the adaptable plug shell 11 without the clamping of the adjusting splint 28, thereby driving the concave plug block 27 and the top hoop seat 26 to move, so as to adjust the position of the concave plug block 27 and the top hoop seat 26 to adapt to the installation of the pipe rack 37 at different positions away from the water meter body 1.

[0028] Sealing rubbers 10 are provided on both sides of the ring piece 9. The sealing rubbers 10 can improve the sealing after the interface of the water meter body 1 and the water pipe 35 are connected. Through holes aligned with the mounting holes on the water meter body 1 are opened on the ring piece 9 and the sealing rubber 10, which can ensure that the interface of the water meter body 1 and the water pipe 35 will not be obstructed when they are bolted. A fixed ring frame 8 is fixedly installed at the front end of the ring piece 9, and the end of the fixed ring frame 8 is fixed to the square frame 7. The fixed ring frame 8 serves to fix the ring piece 9 and the square frame 7 together.

[0029] A rubber pad 29 is provided on the end face of the adjusting splint 28 relative to the adapting plug shell 11. The rubber pad 29 can increase the friction between the adjusting splint 28 and the adapting plug shell 11, thereby improving the fixing force. A T-shaped block 31 is extended from the side of the adjusting splint 28, and a T-shaped shell 30 is slidably mounted on the outer surface of the T-shaped block 31. The lower end of the T-shaped shell 30 is fixed to the adapting plug plate 25. The cooperation between the T-shaped block 31 and the T-shaped shell 30 can guide the adjusting splint 28 so that when the threaded column 32 rotates, the adjusting splint 28 will not rotate with it.

[0030] Two positioning caps 24 are slidably installed inside the support shell 6. The opposite ends of the two positioning caps 24 are fixed to the two square frames 7 respectively. The positioning caps 24 prevent the square frames 7 from separating from the support shell 6. A plurality of column claws 33 are fixedly installed in a circular array on the upper end of the threaded column 32. The column claws 33 facilitate the rotation of the threaded column 32.

[0031] The meter supporting part includes a meter supporting frame 22 arranged below the water meter body 1, and the supporting shell 6 is connected to the meter supporting frame 22. Two meter supporting rings 4 are symmetrically installed in the middle of the lower end of the water meter body 1. The meter supporting ring 4 plays a role in supporting the water meter body 1. The upper parts of the two meter supporting rings 4 are fixedly installed with vertical frames 21, and the opposite ends of the two vertical frames 21 are fixedly installed with slot blocking frames 2. The vertical frames 21 play a role in supporting the slot blocking frames 2. The two slot blocking frames 2 are clamped to the middle position of the upper end of the water meter body 1 from the front and back, respectively, to ensure that the water meter body 1 will not shift. A pressure lug 3 extends from the middle of the upper end of the slot blocking frame 2, and the pressure lug 3 is pressed against the upper end of the water meter body 1. The pressure lug 3 plays a role in pressing the water meter body 1 onto the meter supporting ring 4.

[0032] The lower end of the rear stand 21 is fixed to the meter support frame 22, and the lower end of the front stand 21 is fixedly installed with a Y-shaped frame 15, which is slidably connected to the meter support frame 22, and the Y-shaped frame 15 plays a connecting role. Square cavities 16 are provided at both ends of the Y-shaped frame 15, and a fixing plate 19 is elastically installed between the two square cavities 16. The square cavity 16 plays a role in accommodating the fixing plate 19. A trapezoidal solid block 12 is extended from the upper end of the meter support frame 22, and the vertical surface of the trapezoidal solid block 12 is against the middle of the front end of the fixing plate 19. The trapezoidal solid block 12 can fix the fixing plate 19, thereby keeping the two meter support rings 4 in a closed state, keeping the two slot resistance frames 2 clamped in the middle position of the upper end of the water meter body 1, and keeping the pressure meter ear 3 pressed against the upper end of the water meter body 1.

[0033] A connecting sleeve 5 is fixedly installed at the front end of the meter support frame 22, and the connecting sleeve 5 is embedded in the middle of the outer surface of the supporting shell 6. The connecting sleeve 5 serves to fix the supporting shell 6 and the meter support frame 22 together. A dial frame 20 is fixedly installed between the two ends of the fixed plate 19, and a dial ear 34 extends from the middle of the dial frame 20. The dial frame 20 and the dial ear 34 serve to facilitate the movement of the fixed plate 19. An inclined top groove 23 is provided in the middle of the rear end of the fixed plate 19. The inclined top groove 23 can ensure that the fixed plate 19 can pass through the trapezoidal solid block 12 smoothly.

[0034] A guide column 18 is inlaid between the upper and lower end surfaces of the interior of the square cavity 16, and the fixed plate 19 is slidably installed on the outer surface of the guide column 18. The guide column 18 prevents the fixed plate 19 from escaping from the square cavity 16. A compression spring 17 is wound around the outside of the guide column 18, and one end of the compression spring 17 is fixed to the inner upper end surface of the square cavity 16. The compression spring 17 can press the fixed plate 19 downward so that the fixed plate 19 remains in a state of abutment against the trapezoidal solid block 12, and the other end of the compression spring 17 is fixed to the upper end of the fixed plate 19. Both sides of the support frame 22 are provided with a slide groove 13, and a sliding ear 14 is slidably installed inside the slide groove 13. The slide groove 13 and the sliding ear 14 guide the Y-shaped frame 15, and the upper end of the sliding ear 14 is fixed to the Y-shaped frame 15.

[0035] During installation, place the water meter body 1 between the two vertical frames 21, then push the Y-shaped frame 15 to slide on the meter support frame 22. When the fixing plate 19 passes the trapezoidal solid block 12, the fixing plate 19 will move upward under the dual action of the inclined surface of the inclined top groove 23 and the inclined surface of the trapezoidal solid block 12. At this time, the compression spring 17 is deformed. When the fixing plate 19 passes the trapezoidal solid block 12, the compression spring 17 will push the fixing plate 19 to return to its original position, so that the fixing plate 19 can be fixed on the trapezoidal solid block 12, thereby closing the two meter support rings 4. At the same time, the meter lugs 3 are pressed to press the water meter body 1 into the two closed supporting rings 4, so as to support the water meter body 1 by using the supporting rings 4. At the same time, the two slotted blocks 2 are respectively clamped to the middle position of the upper end of the water meter body 1 from the front and back to firmly fix the water meter body 1 on the supporting ring 4. Then, the threaded column 32 is rotated to allow the two adjusting splints 28 to move in opposite directions under the action of the symmetrical arrangement of the threads at both ends of the threaded column 32 to disengage from the adapting plug shell 11, so that the adapting plug 25 loses the clamping of the adjusting splint 28. , can slide in the adaptable plug shell 11, thereby driving the concave plug block 27 and the top hoop seat 26 to move, so as to adjust the position of the concave plug block 27 and the top hoop seat 26 to adapt to the pipe rack 37 at different positions away from the water meter body 1, and then the interface of the water meter body 1 and the water pipe 35 can be connected. In this process, the ring piece 9 will move toward the interface of the water meter body 1 under extrusion. At this time, the square frame 7 will be driven to move synchronously toward the inside of the supporting shell 6, thereby driving the concave plug block 27 and the top hoop seat on the adaptable plug plate 25 26 moves toward the pipe rack 37. When the interface of the water meter body 1 and the water pipe 35 are completely locked by bolts, the ring piece 9 will be firmly clamped between the interface of the water meter body 1 and the water pipe 35, so that the concave plug 27 is clamped on the pipe rack 37 and the top hoop seat 26 is inserted tightly on the U-shaped pipe hoop 36 to restrict the four directions of the water meter body 1 and firmly fix the water meter body 1. In this way, the water meter body 1 is fixed synchronously during the process of connecting the interface of the water meter body 1 and the water pipe 35, and then it can be used.

[0036] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions merely illustrate the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. An intelligent remote water meter, comprising a water meter body (1), characterized in that: A support shell (6) is provided in front of the water meter body (1), and a meter support member is provided between the support shell (6) and the water meter body (1). Square frames (7) are slidably installed on both ends of the support shell (6). Ring pieces (9) are coaxially provided at the interfaces on both sides of the water meter body (1), and the ring pieces (9) are connected to the square frames (7). Adaptive plug shells (11) are fixedly installed on opposite ends of the two square frames (7). Adaptive plug plates (25) are slidably installed inside the adaptable plug shells (11), and the adaptable plug plates (25) extend through the ends of the adaptable plug shells (11). A concave plug block (27) is fixedly mounted on one end of the plug plate (25), and a slot of the concave plug block (27) is adapted to the pipe rack of the water pipe. A top hoop seat (26) is fixedly mounted on the rear end of the concave plug block (27), and an opening of the top hoop seat (26) is adapted to the U-shaped pipe hoop on the pipe rack. A threaded column (32) is rotatably mounted on the other end of the adaptable plug plate (25), and threads at both ends of the threaded column (32) are symmetrically arranged. Adjustment clamps (28) are screwed on both ends of the threaded column (32), and the two adjustment clamps (28) are respectively pressed against the upper and lower ends of the adaptable plug shell (11).

2. The intelligent remote water meter according to claim 1, characterized in that: Sealing rubbers (10) are provided on both sides of the ring piece (9), and through holes aligned with mounting holes on the water meter body (1) are provided on the ring piece (9) and the sealing rubber (10). A fixed ring frame (8) is fixedly mounted on the front end of the ring piece (9), and an end of the fixed ring frame (8) is fixed to the square frame (7).

3. The intelligent remote water meter according to claim 1, characterized in that: The adjusting splint (28) is provided with a rubber pad (29) on the end surface relative to the adapting plug shell (11), a T-shaped block (31) is extended from the side surface of the adjusting splint (28), a T-shaped shell (30) is slidably mounted on the outer surface of the T-shaped block (31), and the lower end of the T-shaped shell (30) is fixed to the adapting plug plate (25).

4. The intelligent remote water meter according to claim 1, characterized in that: Two positioning caps (24) are slidably mounted inside the support shell (6), and opposite ends of the two positioning caps (24) are fixed to two square frames (7) respectively. A plurality of column claws (33) are fixedly mounted in an annular array on the upper end of the threaded column (32).

5. The intelligent remote water meter according to claim 1, characterized in that: The meter support member includes a meter support frame (22) arranged below the water meter body (1), the support shell (6) is connected to the meter support frame (22), and two meter support rings (4) are symmetrically fitted on the middle part of the lower end of the water meter body (1), and the upper parts of the two meter support rings (4) are fixedly mounted with a stand (21), and the opposite ends of the two stand (21) are fixedly mounted with a slot blocking frame (2), and the two slot blocking frames (2) are respectively clamped to the middle part of the upper end of the water meter body (1) from the front and back, and a pressure lug (3) extends from the middle part of the upper end of the slot blocking frame (2), and the pressure lug (3) is pressed against the upper end of the water meter body (1).

6. The intelligent remote water meter according to claim 5, characterized in that: The lower end of the rear stand (21) is fixed to the meter support frame (22), and the lower end of the front stand (21) is fixedly mounted with a Y-shaped frame (15), and the Y-shaped frame (15) is slidably connected to the meter support frame (22). Both ends of the Y-shaped frame (15) are provided with square cavities (16), and a fixing plate (19) is elastically installed between the two square cavities (16). A trapezoidal fixing block (12) extends from the upper end of the meter support frame (22), and the vertical surface of the trapezoidal fixing block (12) is against the middle of the front end of the fixing plate (19).

7. The intelligent remote water meter according to claim 6, characterized in that: A connecting sleeve (5) is fixedly mounted on the front end of the table support frame (22), and the connecting sleeve (5) is embedded in the middle of the outer surface of the support shell (6). A shifting frame (20) is fixedly mounted between the two ends of the fixed plate (19), and a shifting ear (34) extends from the middle of the shifting frame (20). An inclined top groove (23) is opened in the middle of the rear end of the fixed plate (19).

8. The intelligent remote water meter according to claim 6, characterized in that: A guide column (18) is embedded between the upper and lower end surfaces of the interior of the square cavity (16), and the fixed plate (19) is slidably installed on the outer surface of the guide column (18). A compression spring (17) is wound around the outer side of the guide column (18), one end of the compression spring (17) is fixed to the upper end surface of the interior of the square cavity (16), and the other end of the compression spring (17) is fixed to the upper end of the fixed plate (19). Both sides of the table support frame (22) are provided with a slide groove (13), and a sliding ear (14) is slidably installed inside the slide groove (13), and the upper end of the sliding ear (14) is fixed to the Y-shaped frame (15).

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