Gas pipeline butt joint fixing device

Abstract

The utility model discloses a gas pipeline butt joint fixing device which comprises a butt joint fixing mechanism, the butt joint fixing mechanism comprises a mounting base, a butt joint control panel is mounted on the surface of the mounting base, a lifting adjusting assembly is mounted in the mounting base, and pipeline clamping assemblies are mounted at the two ends of the top of the lifting adjusting assembly. A first gas pipe is arranged on the surface of one end of the pipeline clamping assembly, and a second gas pipe is arranged on the surface of the other end of the pipeline clamping assembly; according to the gas pipeline butt-joint fixing device, gas pipelines can be fixed in a butt-joint mode, stable fixing of the butt-joint gas pipelines is facilitated, stability of connection of the butt-joint pipelines is kept, the pipeline connection effect is improved, meanwhile, adjustment can be conducted according to the sizes of the gas pipelines, and fixed installation of the gas pipelines with different diameters is facilitated; and the fixing effect of the gas pipeline is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of gas pipeline butt jointing, and in particular relates to a gas pipeline butt jointing fixing device. Background Art

[0002] Gas pipe is a special pipeline for conveying combustible gas. It is a metal gas pipe hose that replaces the traditional clip-on rubber hose. It can solve the defects of rubber hose that are easy to fall off, easy to age, easy to be bitten by insects, and short service life. The gas pipe has the characteristics of easy installation, reliable connection, corrosion resistance, no gas blockage, good flexibility, long service life, and can be bent arbitrarily without deformation and no gas blocking. The surface soft protective layer material is safer, easier to clean, and beautiful. The service life of the stainless steel threaded metal hose is 8 years. PE gas pipe In China's municipal pipe market, plastic pipes are developing steadily, and PE gas pipes, PP-R gas pipes, and UPVC gas pipes all have a place.

[0003] The Chinese patent with the announcement number CN201920030772.8 currently discloses a gas pipeline docking and fixing device. In the utility model, the first gas pipe and the second gas pipe are docked together, and then the toggle rod is loosened. Under the action of the return spring and the return spring rebound force, the transmission belt can make the turntable drive the clamping rod on the pressure plate to be inserted into the clamping hole, so that the two gas pipes can be quickly docked.

[0004] Although the above technical solution can dock and install the gas pipe through the spring, the above technical solution cannot stably dock and fix the gas pipe, which affects the docking and fixing effect of the gas pipe, and it is inconvenient to dock and fix gas pipes of different sizes when adjusting according to the size of the gas pipe. Therefore, we need to provide a gas pipeline docking and fixing device. Utility Model Content

[0005] The utility model provides a gas pipeline docking and fixing device, which has the advantages of being able to stably dock and fix the gas pipe and being able to be adjusted for use according to the size of the gas pipe, thereby solving the problems raised in the above background technology.

[0006] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0007] A gas pipeline docking and fixing device comprises: a docking and fixing mechanism, the docking and fixing mechanism comprises a mounting seat, a docking control panel is installed on the surface of the mounting seat, a lifting and adjusting component is installed inside the mounting seat, pipe clamping components are installed at both ends of the top of the lifting and adjusting component, a first gas pipe is arranged on the surface of one end of the pipe clamping component, a second gas pipe is arranged on the surface of the other end of the pipe clamping component, docking limit assemblies are fixedly installed on both sides of the top of the lifting and adjusting component, universal wheels are installed at the four corners of the bottom of the mounting seat, brake pads are installed on the surface of the universal wheels, and a battery is installed inside the mounting seat.

[0008] As a preferred embodiment of the present invention, the lifting and adjusting assembly includes a hydraulic lifting rod, a limiting slide, a supporting slide and a lifting controller. The hydraulic lifting rod is fixedly installed in the mounting seat, and the number of hydraulic lifting rods is multiple. The limiting slide is opened in the mounting seat, and the supporting slide is slidably installed in the limiting slide, and the bottom end of the supporting slide is fixedly connected to the output end of the hydraulic lifting rod. The lifting controller is arranged in the mounting seat, and the lifting controller is electrically connected to multiple hydraulic lifting rods.

[0009] As a preferred embodiment of the present utility model, the pipe clamping assembly includes a connecting seat, an electrically controlled telescopic rod, a shift controller, a shift slide, a pipe clamping member and a pipe pressing member. The connecting seat is fixedly mounted on the supporting slide, the electrically controlled telescopic rod is fixedly mounted on the connecting seat, and the number of the electrically controlled telescopic rods is two, the shift controller is mounted on one side of the connecting seat, and the shift controller is electrically connected to the two electrically controlled telescopic rods, the shift slide is fixedly mounted on the output end of the electrically controlled telescopic rod, and the shift slide is slidably connected to the supporting slide, the pipe clamping member is mounted on the shift slide, the pipe pressing member is mounted on the pipe clamping member, and the number of the pipe pressing members is two groups.

[0010] As a preferred embodiment of the present invention, the docking limit assembly includes a fixed seat, a servo electric cylinder, a position adjustment controller and a fixed component. The fixed seat is fixedly connected to the supporting slide, the servo electric cylinder is fixedly installed in the fixed seat, and the number of servo electric cylinders is two, the position adjustment controller is installed on the fixed seat, and the position adjustment controller is electrically connected to the two servo electric cylinders, and the fixed component is fixedly installed at the output end of the servo electric cylinder.

[0011] As a preferred embodiment of the present invention, the pipe clamping component includes a first electric double-end telescopic rod, a clamping controller, a clamping slider and a clamping seat, the first electric double-end telescopic rod is fixedly installed in the shift slide, the clamping controller is installed on the shift slide, and the clamping controller is electrically connected to the first electric double-end telescopic rod, the clamping slider is fixedly installed at both ends of the first electric double-end telescopic rod, and the clamping seat is fixedly installed on the top of the clamping slider.

[0012] As a preferred embodiment of the present utility model, the pipeline pressing component includes an electrically controlled lifting rod, a pressure position controller and a pressure holding seat. The electrically controlled lifting rod is fixedly installed in the clamping seat, and the number of the electrically controlled lifting rods is two. The pressure position controller is installed on the clamping seat, and the pressure position controller is electrically connected to the two electrically controlled lifting rods. The pressure holding seat is fixedly installed at the output end of the electrically controlled lifting rod, and the pressure holding seat is used in conjunction with the clamping seat.

[0013] As a preferred embodiment of the present invention, the fixed component includes a connecting plate, a second electric double-end telescopic rod, a fixed controller, a connecting rod and a fixed plate, the connecting plate is fixedly installed on the output end of the servo cylinder, the second electric double-end telescopic rod is fixedly installed in the connecting plate, the fixed controller is installed on the connecting plate, and the fixed controller is electrically connected to the second electric double-end telescopic rod, the connecting rod is fixedly connected to both ends of the second electric double-end telescopic rod, and the fixed plate is fixedly connected to one end of the connecting rod.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] The gas pipeline docking and fixing device described in the utility model can dock and fix the gas pipeline through the arrangement of the docking and fixing mechanism, the mounting seat, the docking control panel, the lifting and adjusting component, the pipeline clamping component, the first gas pipe, the second gas pipe, the docking limit component, the universal wheel, the brake pad and the battery, which is beneficial to stably fix the docked gas pipelines, maintain the stability of the docking pipeline connection, and improve the pipeline connection effect. At the same time, it can also be adjusted according to the size of the gas pipeline, which is beneficial to the fixed installation of gas pipelines of different diameters, improve the fixing effect of the gas pipeline, and thus improve the practicability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0017] Figure 2 It is a side view of the three-dimensional structure of the utility model;

[0018] Figure 3 It is a partial structural cross-sectional view of the utility model;

[0019] Figure 4 It is a three-dimensional diagram of the first partial structure of the utility model;

[0020] Figure 5 It is a third partial structural perspective view of the second embodiment of the present invention;

[0021] Figure 6 It is a three-dimensional structural cross-sectional view of the utility model;

[0022] Figure 7 It is a three-dimensional diagram of the third partial structure of the utility model;

[0023] Figure 8 It is a third perspective view of the fourth partial structure of the utility model;

[0024] Fig. 9 It is a third perspective view of the fifth partial structure of the utility model.

[0025] As shown in the figure: 1. docking fixing mechanism; 11. mounting seat; 12. docking control panel; 13. lifting and lowering adjustment assembly; 14. pipe clamping assembly; 15. first gas pipe; 16. second gas pipe; 17. docking limit assembly; 18. universal wheel; 19. brake pad; 20. battery; 131. hydraulic lifting rod; 132. limit slide; 133. support slide; 134. lifting controller; 141. connecting seat; 142. electric telescopic rod; 143. shift controller; 144. shift slide; 145. Pipe clamping member; 146. Pipe pressing member; 171. Fixed seat; 172. Servo electric cylinder; 173. Positioning controller; 174. Fixed member; 211. First electric double-end telescopic rod; 212. Clamping controller; 213. Clamping slider; 214. Clamping seat; 221. Electric lifting rod; 222. Positioning controller; 223. Pressing seat; 231. Connecting plate; 232. Second electric double-end telescopic rod; 233. Fixed controller; 234. Connecting rod; 235. Fixed plate. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the practical embodiment to clearly and completely describe the technical solution in the practical embodiment. Obviously, the described embodiment is only a part of the embodiment of the practical embodiment, not all of the embodiments. Based on the embodiment in the practical embodiment, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this practical embodiment.

[0027] See also Figures 1 to 9As shown, an embodiment of the utility model provides a gas pipeline docking and fixing device, specifically comprising a docking and fixing mechanism 1, the docking and fixing mechanism 1 comprises a mounting seat 11, a docking control panel 12 is mounted on the surface of the mounting seat 11, a lifting and adjusting component 13 is mounted inside the mounting seat 11, pipe clamping components 14 are mounted at both ends of the top of the lifting and adjusting component 13, a first gas pipe 15 is arranged on the surface of one end of the pipe clamping component 14, a second gas pipe 16 is arranged on the surface of the other end of the pipe clamping component 14, docking limit components 17 are fixedly mounted on both sides of the top of the lifting and adjusting component 13, universal wheels 18 are mounted on the four corners of the bottom of the mounting seat 11, brake pads 19 are mounted on the surface of the universal wheels 18, and a battery 20 is mounted inside the mounting seat 11. Specifically in this embodiment, through the arrangement of the docking fixing mechanism 1, the mounting seat 11, the docking control panel 12, the lifting and adjusting assembly 13, the pipe clamping assembly 14, the first gas pipe 15, the second gas pipe 16, the docking limit assembly 17, the universal wheel 18, the brake pad 19 and the battery 20, the gas pipeline can be docked and fixed, which is beneficial to stably fix the docked gas pipeline, maintain the stability of the docking pipeline connection, and improve the pipeline connection effect. At the same time, it can also be adjusted according to the size of the gas pipeline, which is beneficial to fix and install gas pipelines of different diameters and improve the fixing effect of the gas pipeline.

[0028] See also Figure 3 As shown, the lifting and adjusting assembly 13 specifically includes a hydraulic lifting rod 131, a limiting slide 132, a supporting slide 133 and a lifting controller 134. The hydraulic lifting rod 131 is fixedly installed in the mounting seat 11, and the number of the hydraulic lifting rods 131 is multiple. The limiting slide 132 is set in the mounting seat 11, and the supporting slide 133 is slidably installed in the limiting slide 132, and the bottom end of the supporting slide 133 is fixedly connected to the output end of the hydraulic lifting rod 131. The lifting controller 134 is arranged in the mounting seat 11, and the lifting controller 134 is electrically connected to the multiple hydraulic lifting rods 131. In this embodiment, through the arrangement of the hydraulic lifting rod 131, the limiting slide 132, the supporting slide 133 and the lifting controller 134, the device can be lifted and adjusted, which is conducive to adjusting the use height of the device, facilitating adjustment according to the height of the pipeline docking, and improving the convenience of pipeline docking.

[0029] See also Figure 5As shown, the pipe clamping assembly 14 specifically includes a connecting seat 141, an electric telescopic rod 142, a shift controller 143, a shift slide 144, a pipe clamping member 145 and a pipe pressing member 146, the connecting seat 141 is fixedly mounted on the supporting slide 133, the electric telescopic rod 142 is fixedly mounted on the connecting seat 141, and the number of the electric telescopic rods 142 is two, the shift controller 143 is mounted on one side of the connecting seat 141, and the shift controller 143 is electrically connected to the two electric telescopic rods 142, and the shift slide 144 is fixedly mounted on the electric telescopic rod The output end of 142 is connected with the shift slide 144 in a sliding manner to the support slide 133, the pipe clamping member 145 is installed on the shift slide 144, the pipe pressing member 146 is installed on the pipe clamping member 145, and the number of the pipe pressing members 146 is two groups. By setting the connecting seat 141, the electric-controlled telescopic rod 142, the shift controller 143, the shift slide 144, the pipe clamping member 145 and the pipe pressing member 146, the fixed position of the pipe can be adjusted, and the pipe can be clamped and pressed to improve the effect of pipe docking and fixation.

[0030] See also Figure 8 As shown, the docking limit assembly 17 specifically includes a fixing seat 171, a servo electric cylinder 172, a position adjustment controller 173 and a fixing member 174. The fixing seat 171 is fixedly connected to the support slide 133. The servo electric cylinder 172 is fixedly installed in the fixing seat 171, and the number of the servo electric cylinders 172 is two. The position adjustment controller 173 is installed on the fixing seat 171, and the position adjustment controller 173 is electrically connected to the two servo electric cylinders 172. The fixing member 174 is fixedly installed at the output end of the servo electric cylinder 172. In this embodiment, through the arrangement of the fixing seat 171, the servo electric cylinder 172, the position adjustment controller 173 and the fixing member 174, the docking point of the two gas pipelines can be clamped and fixed, which is conducive to maintaining the stability of the docking of the two gas pipelines and improving the quality of the gas pipeline docking.

[0031] See also Figure 6 As shown, the pipe clamping member 145 specifically includes a first electric double-end telescopic rod 211, a clamping controller 212, a clamping slider 213 and a clamping seat 214. The first electric double-end telescopic rod 211 is fixedly installed in the shifting slider 144, the clamping controller 212 is installed on the shifting slider 144, and the clamping controller 212 is electrically connected to the first electric double-end telescopic rod 211, the clamping slider 213 is fixedly installed at both ends of the first electric double-end telescopic rod 211, and the clamping seat 214 is fixedly installed on the top of the clamping slider 213. Specifically in this embodiment, by setting the first electric double-end telescopic rod 211, the clamping controller 212, the clamping slider 213 and the clamping seat 214, the bottom of the gas pipeline can be clamped and limited, which is conducive to clamping and fixing gas pipelines of different sizes and improving the clamping effect of the gas pipeline.

[0032] See also Figure 7 As shown, the pipeline holding component 146 specifically includes an electric-controlled lifting rod 221, a pressure position controller 222 and a pressure holding seat 223. The electric-controlled lifting rod 221 is fixedly installed in the clamping seat 214, and the number of the electric-controlled lifting rods 221 is two. The pressure position controller 222 is installed on the clamping seat 214, and the pressure position controller 222 is electrically connected to the two electric-controlled lifting rods 221. The pressure holding seat 223 is fixedly installed at the output end of the electric-controlled lifting rod 221, and the pressure holding seat 223 is used in conjunction with the clamping seat 214. Specifically in this embodiment, through the arrangement of the electric-controlled lifting rod 221, the pressure position controller 222 and the pressure holding seat 223, the fixed gas pipeline can be pressed, which is conducive to improving the stability of the gas pipeline pressure holding, thereby ensuring the stability of the subsequent docking of the gas pipeline.

[0033] See also Fig. 9 As shown, the fixed member 174 specifically includes a connecting plate 231, a second electric double-end telescopic rod 232, a fixed controller 233, a connecting rod 234 and a fixed plate 235. The connecting plate 231 is fixedly installed at the output end of the servo electric cylinder 172, the second electric double-end telescopic rod 232 is fixedly installed in the connecting plate 231, the fixed controller 233 is installed on the connecting plate 231, and the fixed controller 233 is electrically connected to the second electric double-end telescopic rod 232, the connecting rod 234 is fixedly connected to both ends of the second electric double-end telescopic rod 232, and the fixed plate 235 is fixedly connected to one end of the connecting rod 234. Specifically in this embodiment, by setting the connecting plate 231, the second electric double-end telescopic rod 232, the fixed controller 233, the connecting rod 234 and the fixed plate 235, the butt joint of the two gas pipelines can be clamped, which is conducive to improving the stability of the gas pipelines when they are butt jointed and improving the effect of the subsequent use of the gas pipelines.

[0034] The specific working principle of the utility model is as follows: when in use, the staff first moves the mounting seat 11 to the docking position through the universal wheel 18 according to the docking position of the gas pipeline, then closes the brake pad 19 to lock the universal wheel 18, and then adjusts the device according to the height of the docking installation of the first gas pipe 15 and the second gas pipe 16. At this time, the lifting and adjusting component 13 is controlled to work through the docking control panel 12, and then the lifting controller 134 controls the multiple hydraulic lifting rods 131 to extend and retract, thereby driving the supporting slide 133 to lift and slide in the limiting slide groove 132, and then the pipe clamping component 14 is adjusted to the corresponding height for use, and then one end of the first gas pipe 15 and the second gas pipe 16 are respectively passed through the pipe clamping components 14 at both ends, and then the first gas pipe 15 and the second gas pipe 16 are placed on the surface of the pipe clamping component 145, and then according to the first gas pipe 15 and the second gas pipe 16, The length of the gas pipe 15 and the second gas pipe 16 is controlled by the docking control panel 12 to control the pipe clamping assembly 14 to work, and then the electric control telescopic rod 142 is controlled to be extended and retracted through the shift controller 143, and then the shift slide 144 is driven to slide and adjust, so that the pipe clamping member 145 is adjusted to a certain distance from the pipe docking position, and then the first electric double-end telescopic rod 211 is controlled to be retracted through the clamping controller 212, and then the two clamping slides 213 are driven to slide towards each other, and then the clamping seat 214 is driven to clamp and fix the first gas pipe 15 and the second gas pipe 16, and then the electric control lifting rod 221 is controlled to be retracted through the pressure position controller 222, and then the electric control lifting rod 221 drives the pressure holding seat 223 to move downward, so that the pressure holding seat 223 is pressed on the top of the first gas pipe 15 and the second gas pipe 16, so that the first gas pipe 15 and the second gas pipe 16 are docked and fixed;

[0035] Subsequently, the docking position of the first gas pipe 15 and the second gas pipe 16 is sealed and connected, and then the docking limit assembly 17 is started to work through the docking control panel 12, and then the servo electric cylinder 172 is controlled to extend through the position adjustment controller 173 according to the positions of the first gas pipe 15 and the second gas pipe 16, thereby driving the fixed component 174 to move to the docking position of the first gas pipe 15 and the second gas pipe 16, and then the second electric double-end telescopic rod 232 is controlled to shrink through the fixed controller 233, and then the two ends of the second electric double-end telescopic rod 232 drive the two connecting rods 234 to slide towards each other, thereby driving the fixed plate 235 to clamp and limit the docking position of the first gas pipe 15 and the second gas pipe 16, so as to maintain the stability of the docking of the first gas pipe 15 and the second gas pipe 16.

[0036] The above are only preferred specific implementation methods of the utility model, but the protection scope of the utility model is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the utility model, who makes equivalent replacements or changes based on the technical scheme and utility model concept of the utility model, should be covered by the protection scope of the utility model.

Claims

1. A gas pipeline docking and fixing device, characterized in that: include: A docking fixing mechanism (1), the docking fixing mechanism (1) comprising a mounting seat (11), a lifting and adjusting component (13) being installed inside the mounting seat (11), pipe clamping components (14) being installed at both ends of the top of the lifting and adjusting component (13), a first gas pipe (15) being arranged on the surface of one end of the pipe clamping component (14), a second gas pipe (16) being arranged on the surface of the other end of the pipe clamping component (14), docking limiter components (17) being fixedly installed on both sides of the top of the lifting and adjusting component (13), universal wheels (18) being installed at the four corners of the bottom of the mounting seat (11), brake pads (19) being installed on the surface of the universal wheels (18), and a storage battery (20) being installed inside the mounting seat (11).

2. The gas pipeline docking and fixing device according to claim 1, characterized in that: The lifting and adjusting assembly (13) comprises a hydraulic lifting rod (131), a limiting slide groove (132), a supporting slide seat (133) and a lifting controller (134); the hydraulic lifting rod (131) is fixedly installed in the mounting seat (11), and the number of the hydraulic lifting rods (131) is multiple; the limiting slide groove (132) is arranged in the mounting seat (11); the supporting slide seat (133) is slidably installed in the limiting slide groove (132), and the bottom end of the supporting slide seat (133) is fixedly connected to the output end of the hydraulic lifting rod (131); the lifting controller (134) is arranged in the mounting seat (11), and the lifting controller (134) is electrically connected to the multiple hydraulic lifting rods (131).

3. The gas pipeline docking and fixing device according to claim 2 is characterized in that: The pipe clamping assembly (14) comprises a connecting seat (141), an electrically controlled telescopic rod (142), a shift controller (143), a shift slide seat (144), a pipe clamping component (145) and a pipe pressing component (146); the connecting seat (141) is fixedly mounted on the supporting slide seat (133); the electrically controlled telescopic rod (142) is fixedly mounted on the connecting seat (141), and the number of the electrically controlled telescopic rods (142) is two; the shift controller (143) is mounted on the connecting seat The invention relates to a pipe support structure (141) and a pipe clamping member (146) which is provided on one side of the pipe clamping member (145). The shift controller (143) is electrically connected to the two electrically controlled telescopic rods (142). The shift slide (144) is fixedly installed on the output end of the electrically controlled telescopic rod (142). The shift slide (144) is slidably connected to the support slide (133). The pipe clamping member (145) is installed on the shift slide (144). The pipe pressing member (146) is installed on the pipe clamping member (145). The number of the pipe pressing members (146) is two groups.

4. The gas pipeline docking and fixing device according to claim 2, characterized in that: The docking limit assembly (17) comprises a fixed seat (171), a servo electric cylinder (172), a position adjustment controller (173) and a fixed component (174); the fixed seat (171) is fixedly connected to the support slide (133); the servo electric cylinder (172) is fixedly installed in the fixed seat (171), and the number of the servo electric cylinders (172) is two; the position adjustment controller (173) is installed on the fixed seat (171), and the position adjustment controller (173) is electrically connected to the two servo electric cylinders (172); and the fixed component (174) is fixedly installed at the output end of the servo electric cylinder (172).

5. The gas pipeline docking and fixing device according to claim 3 is characterized in that: The pipe clamping component (145) comprises a first electric double-end telescopic rod (211), a clamping controller (212), a clamping slide block (213) and a clamping seat (214); the first electric double-end telescopic rod (211) is fixedly installed in the shift slide block (144); the clamping controller (212) is installed on the shift slide block (144); and the clamping controller (212) is electrically connected to the first electric double-end telescopic rod (211); the clamping slide block (213) is fixedly installed at both ends of the first electric double-end telescopic rod (211); and the clamping seat (214) is fixedly installed on the top of the clamping slide block (213).

6. The gas pipeline docking and fixing device according to claim 5, characterized in that: The pipeline holding component (146) comprises an electrically controlled lifting rod (221), a pressure position controller (222) and a pressure holding seat (223); the electrically controlled lifting rod (221) is fixedly installed in the clamping seat (214), and the number of the electrically controlled lifting rods (221) is two; the pressure position controller (222) is installed on the clamping seat (214), and the pressure position controller (222) is electrically connected to the two electrically controlled lifting rods (221); the pressure holding seat (223) is fixedly installed at the output end of the electrically controlled lifting rod (221), and the pressure holding seat (223) is used in conjunction with the clamping seat (214).

7. The gas pipeline docking and fixing device according to claim 4, characterized in that: The fixed component (174) comprises a connecting plate (231), a second electric double-end telescopic rod (232), a fixed controller (233), a connecting rod (234) and a fixed plate (235); the connecting plate (231) is fixedly mounted on the output end of the servo electric cylinder (172); the second electric double-end telescopic rod (232) is fixedly mounted in the connecting plate (231); the fixed controller (233) is mounted on the connecting plate (231), and the fixed controller (233) is electrically connected to the second electric double-end telescopic rod (232); the connecting rod (234) is fixedly connected to both ends of the second electric double-end telescopic rod (232); and the fixed plate (235) is fixedly connected to one end of the connecting rod (234).

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