A municipal comprehensive pipe gallery pipe fixing support

Abstract

The application discloses a pipeline fixing support for municipal comprehensive pipe gallery, which comprises a base, vertical columns are fixedly connected to the front and rear ends of the base, two adjusting plates are arranged between the vertical columns, limiting frames are arranged at the opposite ends of the adjusting plates and the base, the positions of the upper and lower limiting frames correspond to each other, a fixing seat is connected to the top of the base, a lower fixing ring is fixedly connected to the top of the fixing seat, an upper fixing ring is rotatably connected to one end of the lower fixing ring, and a stabilizing assembly is arranged on the upper fixing ring; the application relates to the technical field of pipeline fixing supports. The pipeline fixing support for municipal comprehensive pipe gallery can make the installation of pipelines more rapid and efficient through the arranged stabilizing assembly, because the stabilizing assembly can reduce the time and workload of manual operation, thereby improving the installation efficiency; the use of the stabilizing assembly can effectively avoid problems such as inclination and sliding of the pipelines during the installation process, thereby guaranteeing the safety of the installation.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of pipeline fixing support, in particular to a pipeline fixing support for municipal comprehensive pipe gallery. BACKGROUND

[0002] The municipal comprehensive pipe gallery refers to a tunnel space built under the city, in which various types of engineering pipelines such as power, communication, heat, and water supply are integrated, and the above-ground attachments are facilities such as outlet and vent, which is an important infrastructure and "lifeline" to ensure the operation of the city. With the development of society, people's living standards have also been continuously improved, and people will produce a lot of sewage in the process of life that needs to be discharged, and the water needed for people's life needs to be supplied, which are discharged and supplied through water supply and drainage engineering. During the construction of the water supply and drainage engineering, the pipeline needs to be positioned and installed, and a pipeline positioning and installing support is usually used for installation.

[0003] In the process of laying the pipeline, the existing pipeline fixing support has problems such as displacement, tilting, and sliding during installation, and cannot be accurately and firmly fixed, which cannot guarantee the safety during installation. SUMMARY

[0004] In view of the deficiencies of the prior art, the present application provides a pipeline fixing support for municipal comprehensive pipe gallery, which solves the technical problems mentioned in the background art.

[0005] To achieve the above purpose, the present application is implemented by the following technical scheme: a pipeline fixing support for municipal comprehensive pipe gallery, comprising a base, the front and rear ends of the base are fixedly connected with vertical columns, two adjusting plates are arranged between the vertical columns, the opposite ends of the adjusting plates and the base are provided with limiting frames, the positions of the upper and lower limiting frames correspond to each other, the top of the base is connected with a fixing seat, the top of the fixing seat is fixedly connected with a lower fixing ring, one end of the lower fixing ring is rotatably connected with an upper fixing ring, and a stabilizing assembly is arranged on the upper fixing ring.

[0006] The stabilizing assembly comprises a lifting rack slidingly installed on the upper fixing ring, the bottom of the lifting rack is fixedly connected with a pressing block, one end of the outer side of the lifting rack is meshingly connected with a driving gear, the two ends of the driving gear are fixedly connected with a lead screw, the two ends of the lead screw are rotatably connected with an axle seat, the axle seat is fixedly installed on the upper fixing ring, the outer wall of the lead screw is threadedly connected with a traction block, the traction block is slidingly installed on the surface of the upper fixing ring, and the traction block is provided with a traction mechanism.

[0007] As a further preferred embodiment of the present technical solution, the surface of the stand column is provided with a moving groove, a moving rod is slidably arranged in the moving groove, the inner side end of the moving rod is fixedly connected with the outer wall of the adjusting plate, and the other end of the moving rod extends through the stand column to the outside and is fixedly connected with a fixing bolt which is threadedly connected with the stand column.

[0008] As a further preferred embodiment of the present technical solution, the limiting frame comprises a moving seat slidably mounted on the top of the base, a two-way threaded screw rod is threadedly connected with the moving seat, the two-way threaded screw rod is mounted on the top of the base through a bearing seat, a first rack is slidably connected with the top of the moving seat, a supporting block is fixedly connected with the top of the first rack, a rotating rod is rotatably connected with the middle position of the moving seat, a first gear is rotatably connected with one end of the rotating rod, and the top of the first gear is in meshing transmission with the first rack.

[0009] As a further preferred embodiment of the present technical solution, the other end of the rotating rod extends through the moving seat to the outside and is fixedly connected with a second gear, mounting seats are fixedly connected with the outer wall of the moving seat at both ends, a threaded rod is rotatably connected with the mounting seat, a sliding seat is threadedly connected with the outer wall of the threaded rod, the inner side end of the sliding seat is transversely slidably connected with the moving seat, a second rack is fixedly connected with the top of the sliding seat, and the second rack is in meshing transmission with the bottom of the second gear.

[0010] As a further preferred embodiment of the present technical solution, the inner side end of the lower fixing ring is provided with a pad, the right end of the lower fixing ring is provided with a screw rod for connecting and fixing the upper fixing ring, and nuts that are adapted to each other are arranged on the screw rod.

[0011] As a further preferred embodiment of the present technical solution, the inner side ends of the upper fixing ring are fixedly connected with connecting blocks, a rotating groove is arranged on the bottom of the connecting block, lifting grooves are arranged on both sides of the top of the upper fixing ring, lifting racks are slidably arranged in the lifting grooves, a limiting plate is fixedly connected with the top of the upper fixing ring, recesses are arranged on both sides of the limiting plate, and the recesses and the lifting grooves are arranged in communication with each other.

[0012] As a further preferred embodiment of the present technical solution, the traction mechanism comprises a sliding groove arranged on the surface of the traction block, a first sliding rod is fixedly connected with the inner wall of the sliding groove, a first spring is sleeved with the outer wall of the first sliding rod, a sleeve rod is slidably connected with the outer wall of the first sliding rod, the sleeve rod is slidably arranged in the sliding groove and located below the first spring, a protruding block is rotatably connected with the inner side end of the sleeve rod, a steering rod is fixedly connected with the other end of the protruding block and rotatably arranged on the upper fixing ring, a pressing block is fixedly connected with the inner side end of the protruding block, an elastic telescopic rod is fixedly connected with the inner side end of the pressing block, a linkage block is rotatably connected with the other end of the elastic telescopic rod, and a stabilizing mechanism is arranged on the top of the linkage block.

[0013] As a further preferred embodiment of the present technical solution, the stabilizing mechanism comprises a connecting rod rotatably mounted at both ends of the linkage block, the other end of the connecting rod being rotatably connected to the inner wall of the lifting rack, the top of the linkage block being fixedly connected with a second sliding rod, the second sliding rod being slidingly mounted with a limiting plate, the outer wall of the second sliding rod being sleeved with a second spring, the two ends of the second spring being fixedly connected with the limiting plate and the inner side end of the linkage block, respectively.

[0014] Compared with the prior art, the present application has the following advantages:

[0015] The stabilizing assembly can reduce the time and workload of manual operation, thereby improving the installation efficiency; secondly, the use of the stabilizing assembly in cooperation with the limiting frame can effectively prevent the pipeline from tilting or sliding during installation, thereby ensuring the safety of installation; thirdly, the use of the stabilizing assembly can make the installation of the pipeline more precise and standardized; fourthly, the use of the stabilizing assembly can reduce the time and workload of manual operation, thereby reducing the installation cost.

[0016] The upper and lower limiting frames can make the supporting block abut against the outer wall of the pipeline, thereby fixing the pipeline, and can be adjusted according to the specifications of the pipeline, thereby enhancing the application range of the device. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present application;

[0018] Figure 2 It is a schematic diagram of the structure of the vertical column in the present application;

[0019] Figure 3 It is a schematic diagram of the structure of the limiting frame in the present application;

[0020] Figure 4 It is a schematic diagram of the structure of the lower and upper fixing rings in the present application;

[0021] Figure 5 It is a schematic diagram of the structure of the upper fixing ring in the present application;

[0022] Figure 6 It is a schematic diagram of the structure of the stabilizing assembly in the present application;

[0023] Figure 7 It is a schematic diagram of the structure of the traction mechanism in the present application;

[0024] Figure 8 It is the structural diagram of the upper fixing ring and the pressing block in the application;

[0025] Figure 9 It is the structural diagram of the stabilizing mechanism in the application.

[0026] In the figure: 1, base; 2, stand; 3, adjusting plate; 4, limiting frame; 5, fixed seat; 6, lower fixed ring; 7, upper fixed ring; 8, stabilizing assembly; 21, moving groove; 22, moving rod; 23, fixed bolt; 41, moving seat; 42, two-way threaded screw rod; 43, rotating rod; 44, first gear; 45, first rack; 46, supporting block; 47, mounting seat; 48, threaded rod; 49, sliding seat; 410, second rack; 411, second gear; 61, cushion block; 62, screw rod; 63, nut; 71, connecting block; 72, rotating groove; 73, lifting groove; 74, limiting plate; 75, groove; 81, lifting rack; 82, pressing block; 83, driving gear; 84, screw rod; 85, shaft seat; 86, traction block; 87, first sliding rod; 88, first spring; 89, sleeve rod; 810, protruding block; 811, turning rod; 812, pressing block; 813, elastic telescopic rod; 814, linkage block; 815, connecting rod; 816, second sliding rod; 817, second spring. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the application, rather than all the embodiments. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the application.

[0028] Please refer to Figures 1-9 The application provides a technical solution: a municipal comprehensive pipe gallery pipe fixing support, which comprises a base 1, the front and rear ends of the base 1 are fixedly connected with stands 2, two adjusting plates 3 are arranged between the stands 2, the opposite ends of the adjusting plates 3 are both provided with limiting frames 4, the positions of the upper and lower limiting frames 4 correspond to each other, the top of the base 1 is connected with a fixed seat 5, the top of the fixed seat 5 is fixedly connected with a lower fixed ring 6, one end of the lower fixed ring 6 is rotatably connected with an upper fixed ring 7, and the upper fixed ring 7 is provided with a stabilizing assembly 8. In the embodiments of the application, the stands 2 are eight, and four stands 2 form a group, and the adjusting plates 3 are arranged on the stands 2 in each group.

[0029] Please refer to Figure 2The surface of the stand 2 is provided with a moving groove 21, a moving rod 22 is slidably arranged in the moving groove 21, the inner side end of the moving rod 22 is fixedly connected with the outer wall of the adjusting plate 3, the other end of the moving rod 22 extends to the outside through the stand 2, and the outer wall is threadedly connected with a fixing bolt 23 for fixing the moving rod 22 on the stand 2, in the embodiment of the application, when the fixing bolt 23 is loosened, the adjusting plate 3 moves up and down on the stand 2 through the moving rod 22, so that the distance between the two limiting racks 4 is adjusted according to the diameter of the pipeline, and then the fixing bolt 23 is tightened to fix the position of the adjusting plate 3.

[0030] Please refer to Figure 3 The limiting rack 4 comprises a moving seat 41 slidably arranged on the top of the base 1, a two-way threaded screw rod 42 is threadedly connected with the moving seat 41, the two-way threaded screw rod 42 is arranged on the top of the base 1 through a bearing seat, the top of the moving seat 41 is slidably connected with a first rack 45, the top of the first rack 45 is fixedly connected with a supporting block 46, the middle part of the moving seat 41 is rotatably connected with a rotating rod 43, one end of the rotating rod 43 is rotatably connected with a first gear 44, and the top of the first gear 44 is in meshing transmission with the first rack 45.

[0031] The other end of the rotating rod 43 extends to the outside through the moving seat 41 and is fixedly connected with a second gear 411, the outer wall of the moving seat 41 is fixedly connected with a mounting seat 47 at both ends, the mounting seat 47 is rotatably connected with a threaded rod 48, the outer wall of the threaded rod 48 is threadedly connected with a sliding seat 49, the inner side end of the sliding seat 49 is slidably connected with the moving seat 41, the top of the sliding seat 49 is fixedly connected with a second rack 410, and the second rack 410 is in meshing transmission with the bottom of the second gear 411, in the embodiment of the application, when the two-way threaded screw rod 42 is rotated, the two-way threaded screw rod 42 drives the two moving seats 41 to move close to each other or away from each other, so as to adjust the distance between the supporting blocks 46, when the threaded rod 48 is rotated, the threaded rod 48 drives the sliding seat 49 to move horizontally, so that the sliding seat 49 drives the second rack 410 to move horizontally, so that the second rack 410 drives the second gear 411 to rotate in the moving process, the second gear 411 drives the first gear 44 to synchronously rotate through the rotating rod 43, so that the first gear 44 drives the first rack 45 at the top to move, and then drives the supporting block 46 to move; the upper and lower limiting racks 4 can make the supporting block 46 abut against the outer wall of the pipeline, so as to realize the fixation of the pipeline.

[0032] Please refer to Figure 4The inner side end of the lower fixing ring 6 is provided with a cushion block 61, and the right end of the lower fixing ring 6 is provided with a screw rod 62 for connecting and fixing the upper fixing ring 7, and the screw rod 62 is provided with a nut 63 matched with each other, and in the embodiment of the application, the cushion block 61 is used for supporting and protecting the pipeline, and the screw rod 62 and the nut 63 are used for connecting and fixing the lower fixing ring 6 and the upper fixing ring 7.

[0033] Please refer to Figure 5 The inner side two ends of the upper fixing ring 7 are fixedly connected with connecting blocks 71, the bottom of the connecting block 71 is provided with a rotating groove 72, the top two sides of the upper fixing ring 7 are provided with lifting grooves 73, the top of the upper fixing ring 7 is fixedly connected with a limiting plate 74, the two sides of the limiting plate 74 are provided with recesses 75, and the recesses 75 and the lifting grooves 73 are arranged in communication with each other.

[0034] Please refer to Figure 5 、 Figure 6 、 Figure 7 、 Figure 8 、 Figure 9 The stable assembly 8 comprises a lifting rack 81 slidingly installed in the lifting groove 73, the bottom of the lifting rack 81 is fixedly connected with a pressing block 82, one end of the outer side of the lifting rack 81 is meshingly connected with a driving gear 83, the two ends of the driving gear 83 are fixedly connected with a lead screw 84, the two ends of the lead screw 84 are rotatably connected with an axle seat 85, the axle seat 85 is fixedly installed on the upper fixing ring 7, the outer wall of the lead screw 84 is threadedly connected with a traction block 86, the traction block 86 is slidingly installed on the surface of the upper fixing ring 7, and the traction block 86 is provided with a traction mechanism.

[0035] The traction mechanism comprises a sliding groove formed in the surface of the traction block 86, and a first sliding rod 87 is fixedly connected to the inner wall of the sliding groove, a first spring 88 is sleeved on the outer wall of the first sliding rod 87, a sleeve rod 89 is slidingly connected to the outer wall of the first sliding rod 87, the sleeve rod 89 is slidingly installed in the sliding groove, and the sleeve rod 89 is located below the first spring 88, a protruding block 810 is rotatably connected to the inner side end of the sleeve rod 89, the other end of the protruding block 810 is fixedly connected with a steering rod 811, the steering rod 811 is rotatably installed on the upper fixing ring 7, a pressing block 812 is fixedly connected to the outer wall of the steering rod 811, an elastic telescopic rod 813 is fixedly connected to the inner side end of the pressing block 812, and the other end of the elastic telescopic rod 813 is rotatably connected with a linkage block 814, and the top of the linkage block 814 is provided with a stabilizing mechanism.

[0036] The stabilizing mechanism comprises a connecting rod 815 rotatably mounted at both ends of the linkage block 814, the other end of the connecting rod 815 is rotatably connected with the inner wall of the lifting rack 81, the top of the linkage block 814 is fixedly connected with a second sliding rod 816, the second sliding rod 816 is slidingly installed on the limiting plate 74, the outer wall of the second sliding rod 816 is sleeved with a second spring 817, the two ends of the second spring 817 are fixedly connected with the inner side end of the limiting plate 74 and the linkage block 814 respectively, in the embodiment of the present application, the pressing block 812 and the elastic telescopic rod 813 are an integral structure, and at the same time the elastic telescopic rod 813 can move in the rotating groove 72, the second spring 817 in the text is in a stretched state, and under the elastic force of the second spring 817, the linkage block 814 can be driven to move upward; when the pipeline is installed on the lower fixed ring 6, and the upper fixed ring 7 is closed, the pressing block 82 is tightly attached to the outer wall of the pipeline, with the connection and fixation of the upper fixed ring 7 and the lower fixed ring 6, the pressing block 82 drives the lifting rack 81 to move upward under the reaction force of the pipeline, so that the lifting rack 81 drives the driving gear 83 to rotate, so that the driving gear 83 drives the two side lead screws 84 to rotate synchronously, so that the lead screw 84 drives the traction block 86 to move to one end of the outer side, and the traction block 86 drives the lug 810 and the steering rod 811 to rotate in the moving process, so that the steering rod 811 drives the pressing block 812 to rotate to the inner side, so that the two pressing blocks 812 on the left and right sides clamp and limit the pipeline, and at the same time the pressing block 812 drives the elastic telescopic rod 813 to rotate upward in the rotating process, the elastic telescopic rod 813 cooperates with the lifting rack 81 and the second spring 817 to drive the linkage block 814 to move upward, so as to ensure the clamping force of the pressing block 812 on the pipeline, so that the pressing block 812 can extrude the pipeline, thereby clamping and fixing the pipeline; the installation of the pipeline can be more rapid and efficient through the setting of the stabilizing assembly 8, because the stabilizing assembly 8 can reduce the time and workload of manual operation, thereby improving the installation efficiency; the use of the stabilizing assembly 8 can effectively avoid the problems of inclination and sliding of the pipeline during installation, thereby ensuring the safety of installation; the stabilizing assembly 8 has reliable fixing capacity and can stably support the pipeline to prevent accidents during installation; the use of the stabilizing assembly 8 can make the installation of the pipeline more accurate and standardized, the stabilizing assembly 8 can be adjusted according to the shape and size of the pipeline, so that the installation of the pipeline is more accurate and meets the standard requirements; the use of the stabilizing assembly 8 can reduce the time and workload of manual operation, thereby reducing the installation cost, in addition, the stabilizing assembly 8 can be repeatedly used without frequent replacement, which can also reduce the cost.

[0037] The working principle of the pipeline fixing support of the municipal comprehensive pipe gallery is as follows: when the pipeline is installed on the lower fixing ring 6 and the upper fixing ring 7 is closed, the lower fixing ring 6 and the upper fixing ring 7 are connected and fixed by the screw rod 62 and the nut 63, and the pressing block 82 is tightly attached to the outer wall of the pipeline; with the connection and fixation of the upper fixing ring 7 and the lower fixing ring 6, the pressing block 82 drives the lifting rack 81 to move upward under the reaction force of the pipeline, so that the lifting rack 81 drives the driving gear 83 to rotate, so that the driving gear 83 drives the two side lead screws 84 to rotate synchronously, so that the lead screw 84 drives the traction block 86 to move to one end of the outer side, and the traction block 86 drives the lug 810 and the steering rod 811 to rotate in the moving process, so that the steering rod 811 drives the pressing block 812 to rotate inward, so that the two pressing blocks 812 on the left and right sides clamp and limit the pipeline, and the pressing block 812 drives the elastic extension rod 813 to rotate upward in the rotating process, so that the elastic extension rod 813 cooperates with the lifting rack 81 and the second spring 817 to drive the linkage block 814 to move upward, thereby ensuring the clamping force of the pressing block 812 on the pipeline, so that the pressing block 812 can extrude and clamp the pipeline, and the two ends of the pipeline are located between the limiting frames 4;

[0038] Then, according to the diameter of the pipeline, the bidirectional threaded screw rod 42 is rotated, the two sides of the moving seat 41 are brought close to each other, the distance between the supporting blocks 46 is adjusted, then the threaded rod 48 is rotated, the sliding seat 49 is driven to move horizontally, the sliding seat 49 drives the second rack 410 to move horizontally, so that the second rack 410 drives the second gear 411 to rotate in the moving process, the second gear 411 drives the first gear 44 to rotate synchronously through the rotating rod 43, the first gear 44 drives the top first rack 45 to move, and then drives the supporting block 46 to move, so that the bottom supporting block 46 abuts against the outer wall of the pipeline, thereby fixing the pipeline, the upper supporting block 46 fixes the pipeline, avoids the shaking of the other end of the pipeline, reduces the deviation of the pipeline in the installation process, and improves the subsequent butt joint precision of the pipeline and the stability of the pipeline installation.

[0039] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A municipal utility tunnel pipe fixing support comprising a base (1), characterized in that: The front and rear ends of the base (1) are fixedly connected with stand columns (2), two adjusting plates (3) are arranged between the stand columns (2), the opposite ends of the adjusting plates (3) are provided with limiting frames (4), the positions of the upper and lower limiting frames (4) correspond to each other, the top of the base (1) is connected with a fixing seat (5), the top of the fixing seat (5) is fixedly connected with a lower fixing ring (6), one end of the lower fixing ring (6) is rotatably connected with an upper fixing ring (7), and the upper fixing ring (7) is provided with a stabilizing assembly (8); The stabilizing assembly (8) comprises a lifting rack (81) slidably arranged on the upper fixing ring (7), the bottom of the lifting rack (81) is fixedly connected with a pressing block (82), one end of the outer side of the lifting rack (81) is meshingly connected with a driving gear (83), the two ends of the driving gear (83) are fixedly connected with lead screws (84), the two ends of the lead screws (84) are rotatably connected with shaft seats (85), the shaft seats (85) are fixedly arranged on the upper fixing ring (7), the outer wall of the lead screw (84) is threadedly connected with a traction block (86), and the traction block (86) is slidably arranged on the surface of the upper fixing ring (7), and the traction block (86) is provided with a traction mechanism; The surface of the stand column (2) is provided with a moving groove (21), the moving groove (21) is slidably provided with a moving rod (22), the inner side end of the moving rod (22) is fixedly connected with the outer wall of the adjusting plate (3), and the other end of the moving rod (22) extends to the outside through the stand column (2) and is threadedly connected with a fixing bolt (23) for fixing the moving rod (22) on the stand column (2); The limiting frame (4) comprises a moving seat (41) slidably arranged on the top of the base (1), the moving seat (41) is threadedly connected with a bidirectional threaded lead screw (42), the bidirectional threaded lead screw (42) is arranged on the top of the base (1) through a bearing seat, the top of the moving seat (41) is slidably connected with a first rack (45), the top of the first rack (45) is fixedly connected with a supporting block (46), the middle position of the moving seat (41) is rotatably connected with a rotating rod (43), one end of the rotating rod (43) is rotatably connected with a first gear (44), and the top of the first gear (44) is in meshing transmission with the first rack (45); The other end of the rotating rod (43) extends to the outside through the moving seat (41) and is fixedly connected with a second gear (411), the outer walls of the two ends of the moving seat (41) are fixedly connected with mounting seats (47), the mounting seats (47) are rotatably connected with threaded rods (48), the outer wall of the threaded rod (48) is threadedly connected with a sliding seat (49), the inner side end of the sliding seat (49) is slidably connected with the moving seat (41), the top of the sliding seat (49) is fixedly connected with a second rack (410), and the second rack (410) is in meshing transmission with the bottom of the second gear (411); The inner side end of the lower fixed ring (6) is provided with a cushion block (61), and the right end of the lower fixed ring (6) is provided with a screw rod (62) for connecting the upper fixed ring (7), and the screw rod (62) is provided with a nut (63) matched with each other; The inner side two ends of the upper fixed ring (7) are fixedly connected with a connecting block (71), the bottom of the connecting block (71) is provided with a rotating groove (72), the top two sides of the upper fixed ring (7) are provided with lifting grooves (73), and the lifting rack (81) is slidingly installed in the lifting grooves (73), the top of the upper fixed ring (7) is fixedly connected with a limiting plate (74), the two sides of the limiting plate (74) are provided with grooves (75), and the grooves (75) and the lifting grooves (73) are arranged in intercommunication; The traction mechanism comprises a sliding groove formed in the surface of the traction block (86), and a first sliding rod (87) is fixedly connected to the inner wall of the sliding groove, a first spring (88) is sleeved on the outer wall of the first sliding rod (87), a sleeve rod (89) is slidingly connected to the outer wall of the first sliding rod (87), the sleeve rod (89) is slidingly installed in the sliding groove, and the sleeve rod (89) is located below the first spring (88), a protruding block (810) is rotatably connected to the inner side end of the sleeve rod (89), a steering rod (811) is fixedly connected to the other end of the protruding block (810), and the steering rod (811) is rotatably installed on the upper fixed ring (7), a pressing block (812) is fixedly connected to the outer wall of the steering rod (811), an elastic telescopic rod (813) is fixedly connected to the inner side end of the pressing block (812), and a linkage block (814) is rotatably connected to the other end of the elastic telescopic rod (813), and the top of the linkage block (814) is provided with a stabilizing mechanism; The stabilizing mechanism comprises a connecting rod (815) rotatably installed at the two ends of the linkage block (814), the other end of the connecting rod (815) is rotatably connected with the inner wall of the lifting rack (81), a second sliding rod (816) is fixedly connected to the top of the linkage block (814), the second sliding rod (816) is slidingly installed in the limiting plate (74), a second spring (817) is sleeved on the outer wall of the second sliding rod (816), and the two ends of the second spring (817) are fixedly connected with the inner side end of the limiting plate (74) and the linkage block (814).

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