Prefabricated reinforced concrete part

Abstract

The present invention relates to the technical field of prefabricated parts, and specifically to a reinforced concrete prefabricated part, comprising a column mechanism, a lifting mechanism, a stabilizing mechanism and a descending mechanism, wherein a lifting mechanism is movably connected in a steel ring layer in the column mechanism, a second right-angle rack connected to the steel ring layer in the column mechanism engages the lifting mechanism in the column mechanism, the stabilizing mechanism is on both sides of the lifting mechanism, the stabilizing mechanism is installed in the cross section of the column mechanism, and the descending mechanism is fixedly connected to the second right-angle rack in the lifting mechanism; the column mechanism is the main structural part of the present invention, a user can move a handle in the lifting mechanism to lift a telescopic column, and in the stabilizing mechanism, when the telescopic column is lifted, the arc surface base contacts a fixed cone, and the fixed cone penetrates into the soil, so that the column body can be installed more firmly, and the descending mechanism can adjust the telescopic column to a suitable height.

Description

Technical Field

[0001] The invention relates to the technical field of prefabricated parts, in particular to a reinforced concrete prefabricated part. Background Art

[0002] Prefabricated parts have many uses in construction. Prefabricated concrete parts produced and processed in the prefabrication yard can be directly transported to the construction site for installation, which can effectively shorten the construction period, reduce construction costs, etc.

[0003] In construction foundation operations, it is generally necessary to place prefabricated and embedded parts in predetermined positions before pouring concrete, based on the functional requirements of the building. After pouring concrete, they are fixed in the concrete, with an exposed iron plate that can be welded. However, this requires a suitable site. When building some light buildings in humid rainforests or on ground with perennial waterlogging, the method of pouring concrete is not applicable. Pile foundations are generally used as foundations, but the existing pile foundations are not strong enough when driven into the ground, the friction with the ground is insufficient, and the height cannot be adjusted after being driven into the ground. Summary of the invention

[0004] In view of the problems in the prior art, the present invention provides a reinforced concrete prefabricated part.

[0005] The technical solution adopted by the present invention to solve its technical problems is: a reinforced concrete prefabricated part, including a column mechanism, a lifting mechanism, a stabilizing mechanism and a descending mechanism, the lifting mechanism is movably connected in the steel ring layer in the column mechanism, the second right-angle rack connected to the steel ring layer in the column mechanism clamps the lifting mechanism in the column mechanism, the stabilizing mechanism is on both sides of the lifting mechanism, the stabilizing mechanism is installed in the cross section of the column mechanism, and the descending mechanism is fixedly connected to the second right-angle rack in the lifting mechanism.

[0006] Preferably, the column structure includes a column body, the column body is made of concrete, steel bars are fixed in the concrete, the column body is tubular, the interior of the column body is hollow, a steel ring layer is fixedly connected to the inner wall of the column body, and a column head is fixedly connected to the lower end of the column body.

[0007] Preferably, the lifting mechanism includes a telescopic column, the telescopic column is inside the steel ring layer, one side of the telescopic column is fixedly connected to a first rack, the first rack is meshed with a half gear, the half gear is inside an opening, the opening is arranged on the column body, a handle is fixedly connected to the half gear, the handle extends out of the opening, a guide frame is provided on the half gear, the guide frame is hung on a fixed column, the guide frame and the fixed column are slidably connected, one end of the fixed column is fixedly connected to the side of the opening, and the other end of the fixed column is not connected to anything.

[0008] Preferably, the lifting mechanism further comprises a second screw hole, the second screw hole is arranged at the top end of the telescopic column, and the second screw hole is surrounded by first screw holes, the first screw hole is also arranged at the top end of the telescopic column.

[0009] Preferably, the lifting mechanism also includes a first right-angle rack, which is fixedly connected to a side of the telescopic column away from the first rack, the first right-angle rack is meshed with a second right-angle rack, and a deformation spring is fixedly connected to the second right-angle rack, and the other end of the deformation spring is fixedly connected to the inner wall of the steel ring layer.

[0010] Preferably, the stabilizing mechanism includes a fixed cone, which is in a cavity, and the cavity is opened on the column body. The end of the fixed cone close to the telescopic column is an arc-shaped structure, and the lower end of the telescopic column is fixedly connected to a curved base, and the upper end of the fixed cone is fixedly connected to a second rack, the second rack is meshed with a third rack, and the third rack is fixedly connected to the upper wall of the cavity.

[0011] Preferably, the stabilizing mechanism also includes a first slider, the first slider is fixedly connected to the lower end of the fixed cone, the first slider is slidably connected to the first slide groove, the first slide groove is fixedly connected to the upper end of the compression spring, the lower end of the compression spring is fixedly connected to the lower wall of the cavity, the second slide groove is fixedly connected to two adjacent surfaces of the fixed cone to which the second rack belongs, the second slider is slidably connected to the second slide groove, the upper and lower ends of the second slider are respectively provided with clamping blocks, the second slider is slidably connected to the clamping block, a support spring is fixedly connected to the surface of the clamping block away from the second slider, and the other end of the support spring is fixedly connected in the second slide groove.

[0012] Preferably, the descending mechanism includes a fixed block, a deformable spring is nested on the periphery of the fixed block, one end of the fixed block is fixedly connected to the second right-angle rack, the other end of the fixed block is fixedly connected to a steel wire rope, the steel wire rope is pulled by a fixed pulley, and the steel wire rope extends to the outside of the column body and is fixedly connected to the handle.

[0013] Beneficial effects of the present invention:

[0014] (1) The reinforced concrete prefabricated part described in the present invention has a column structure in which the column body is made of concrete with steel bars fixed inside the concrete. The column body is tubular and hollow inside. A steel ring layer is fixedly connected to the inner wall of the column body. Steel bars are arranged in the tube wall to increase the rigidity of the column body and prevent the column body from being directly broken after the concrete is crushed. At the same time, a steel ring layer is fixedly connected to the inner wall of the column body. The steel ring layer supports the interior, which can also give the interior of the column body a certain supporting capacity to prevent the column body from being broken due to external extrusion.

[0015] (2) In the lifting mechanism of a reinforced concrete prefabricated part described in the present invention, the handle is pressed down, and the left and right fulcrums of the fixed column are used. When the handle is pressed down, the half gear will drive the first rack upward. At the same time, when the handle is pressed down, the first right-angle rack exerts pressure on the second right-angle rack, and the deformation spring will shrink, so the first right-angle rack slides upward relative to the second right-angle rack. After the sliding is completed, the two will be tightly engaged, and the telescopic column will be partially lifted.

[0016] (3) In the reinforced concrete prefabricated part described in the present invention, in the stabilizing mechanism, the arc-surface base connected to the lower end of the telescopic column rises with the column and contacts the fixed cone when rising. Since the end of the fixed cone close to the telescopic column is an arc-shaped structure, the fixed cone is squeezed and moved away from the telescopic column after contact. At this time, the fixed cone penetrates into the soil on both sides of the column body, thereby increasing the friction of the column body underground and improving stability.

[0017] (4) In the reinforced concrete prefabricated part described in the present invention, in the descending mechanism, the handle is pulled, and the handle drives the steel wire rope to pull the fixed block in the direction away from the second right-angle rack through the fixed pulley transmission. After the fixed block is pulled, the deformation spring contracts, driving the second right-angle rack to move in the direction away from the first right-angle rack. When the second right-angle rack is not engaged with the first right-angle rack, the telescopic column will slide downward without supporting force. After sliding to the appropriate position, the handle is released. At this time, the fixed block moves in the direction close to the second right-angle rack, and the deformation spring stretches to drive the second right-angle rack close to the first right-angle rack and the two are engaged. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0019] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present invention;

[0020] Figure 2 It is a schematic diagram of the connection structure of the half gear, the fixed column and the first rack;

[0021] Figure 3 It is a schematic diagram of the internal connection structure of the column body;

[0022] Figure 4 It is a schematic diagram of the connection structure of the stabilizing mechanism;

[0023] Figure 5 for Figure 1 The enlarged schematic diagram at A in the middle;

[0024] Figure 6 for Figure 2 The enlarged schematic diagram of point B in the middle;

[0025] Figure 7 for Figure 3 The enlarged schematic diagram at C in the middle;

[0026] Figure 8 for Figure 3 The enlarged schematic diagram at D in the middle;

[0027] Fig. 9 for Figure 4 The enlarged schematic diagram at E in the middle;

[0028] In the figure: 1. column mechanism; 11. column body; 12. concrete; 13. steel bar; 14. column head; 15. steel ring layer; 2. lifting mechanism; 21. telescopic column; 22. first rack; 24. half gear; 26. opening; 27. guide frame; 28. fixed column; 29. ​​handle; 210. first right-angle rack; 212. second right-angle rack; 214. deformation spring; 215. first screw hole; 216. second screw hole; 3. stabilizing mechanism; 31. fixed cone; 32. arc base; 33. hole; 34. second rack; 36. third rack; 37. first slider; 38. first slide groove; 39. compression spring; 310. second slider; 311. clamping block; 312. support spring; 313. second slide groove; 4. descending mechanism; 41. handle; 42. fixed block; 43. wire rope; 44. fixed pulley. DETAILED DESCRIPTION

[0029] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0030] like Figure 1-Figure 9 As shown, a reinforced concrete prefabricated part described in the present invention comprises a column mechanism 1, a lifting mechanism 2, a stabilizing mechanism 3 and a descending mechanism 4, wherein the lifting mechanism 2 is movably connected in the steel ring layer 15 in the column mechanism 1, and the second right-angle rack 212 connected to the steel ring layer 15 in the column mechanism 1 engages the lifting mechanism 2 in the column mechanism 1, and the stabilizing mechanism 3 is on both sides of the lifting mechanism 2, and the stabilizing mechanism 3 is installed in the cross section of the column mechanism 1, and the descending mechanism 4 is fixedly connected to the second right-angle rack 212 in the lifting mechanism 2; the column mechanism 1 is the main structural part of the present invention, and the user can move the handle 29 in the lifting mechanism 2 to lift the telescopic column 21, and in the stabilizing mechanism 3, when the telescopic column 21 is lifted, the arc base 32 contacts the fixed cone 31, and the fixed cone 31 is sunk into the soil, so that the column body 11 can be installed more firmly, and the descending mechanism 4 can adjust the telescopic column 21 to a suitable height.

[0031] Specifically, the column mechanism 1 includes a column body 11, and the column body of the column body 11 is composed of concrete 12, and steel bars 13 are fixed in the concrete 12. The column body 11 is tubular, and the interior of the column body 11 is hollow. The inner wall of the column body 11 is fixedly connected with a steel ring layer 15, and the lower end of the column body 11 is fixedly connected with a column head 14; the column body 11 is cast by concrete 12, and the main body of the column body 11 is in the shape of a circular tube, but has a certain thickness. Steel bars 13 are arranged in the tube wall to increase the rigidity of the column body 11 and prevent the column body 11 from being directly disconnected after the concrete 12 is broken. At the same time, the inner wall of the column body 11 is fixedly connected with a steel ring layer 15, and the steel ring layer 15 is supported inside, which can also make the column body 11 have a certain supporting capacity inside to prevent the column body 11 from being broken due to external extrusion. The column head 14 at the lower end of the column body 11 is a sharp steel material, which makes it easier to drive the column body 11 into the ground.

[0032] Specifically, the lifting mechanism 2 includes a telescopic column 21, the telescopic column 21 is inside the steel ring layer 15, a first rack 22 is fixedly connected to one side of the telescopic column 21, the first rack 22 is meshed with a half gear 24, the half gear 24 is inside an opening 26, the opening 26 is arranged on the column body 11, a handle 29 is fixedly connected to the half gear 24, the handle 29 extends outside the opening 26, a guide frame 27 is provided on the half gear 24, the guide frame 27 is hung on a fixed column 28, the guide frame 27 and the fixed column 28 are slidably connected, and one end of the fixed column 28 is fixedly connected to the opening 26 The other end of the fixing column 28 is not connected to anything, the second screw hole 216 is opened at the top of the telescopic column 21, the second screw hole 216 is surrounded by the first screw hole 215, the first screw hole 215 is also opened at the top of the telescopic column 21, the first right-angle rack 210 is fixedly connected to the side of the telescopic column 21 away from the first rack 22, the first right-angle rack 210 and the second right-angle rack 212 are meshed, the second right-angle rack 212 is fixedly connected with a deformation spring 214, the other end of the deformation spring 214 is fixedly connected to the inner wall of the steel ring layer 15; after the column body 11 is driven into the ground , keep the opening 26 on the ground, then put the guide frame 27 in the half gear 24 on the fixed column 28, and then hold the handle 29 and push it toward the column body 11. Because the fixed column 28 is immovable, the half gear 24 is close to the telescopic column 21 and meshes with the first rack 22 on the telescopic column 21. Then press down the handle 29, use the fixed column 28 as a fulcrum, and when the handle 29 is pressed down, the half gear 24 will drive the first rack 22 upward. At the same time, when the handle 29 is pressed down, the first right-angle rack 210 exerts pressure on the second right-angle rack 212, and the deformation spring 214 will contract, so the first right-angle rack 210 is upward relative to the second right-angle rack 212 The telescopic column 21 is partially lifted, and the handle 29 is pulled to slide in the fixed column 28 away from the first rack 22. The handle 29 is then lifted, and the fixed column 28 is used as a fulcrum. At this time, the half gear 24 rotates and resets to the first depressed position, and the handle 29 is pushed again to engage the half gear 24 and the first rack 22. The handle 29 is pressed down again to lift the telescopic column 21. The telescopic column 21 can be lifted repeatedly to reach a suitable height. Generally, the height of the pile foundation cannot be adjusted after it is driven into the ground. In humid areas, the height of the ground in light buildings can be adjusted by using the pile foundation that can be raised and lowered.

[0033] Specifically, the stabilizing mechanism 3 includes a fixed cone 31, the fixed cone 31 is in a cavity 33, the cavity 33 is provided on the column body 11, the end of the fixed cone 31 close to the telescopic column 21 is an arc-shaped structure, the lower end of the telescopic column 21 is fixedly connected to an arc surface base 32, the upper end of the fixed cone 31 is fixedly connected to a second rack 34, the second rack 34 is meshed with a third rack 36, the third rack 36 is fixedly connected to the upper wall of the cavity 33, a first slider 37 is fixedly connected to the lower end of the fixed cone 31, the first slider 37 is slidably connected to a first slide groove 38, the first slide groove 38 is fixedly connected to the upper end of a compression spring 39, The lower end of the compression spring 39 is fixedly connected to the lower wall of the cavity 33, and the second slider 310 is fixedly connected to the two adjacent surfaces of the fixed cone 31 to which the second rack 34 belongs. The second slider 310 and the second slide groove 313 are slidably connected, and the second slide groove 313 is fixedly connected to the inner wall of the cavity 33. The upper and lower ends of the second slider 310 are respectively provided with clamping blocks 311, and the second slider 310 and the clamping block 311 are slidably connected. A support spring 312 is fixedly connected to the surface of the clamping block 311 away from the second slider 310, and the other end of the support spring 312 is fixedly connected in the second slide groove 313;When the telescopic column 21 is continuously lifted, the arc base 32 connected to the lower end of the telescopic column 21 also rises, and contacts the fixed cone 31 during the rise. Because the end of the fixed cone 31 close to the telescopic column 21 is an arc structure, the fixed cone 31 is squeezed and receives a horizontal component force to the right after the contact. Under the action of the component force, the fixed cone 31 drives the second rack 34 to move to the right. Because the second rack 34 and the third rack 36 are both helical racks, the second rack 34 slides to the right relative to the third rack 36, and at the same time, the teeth on the third rack 36 There is downward pressure on the second rack 34, which will cause the compression spring 39 to contract, and the fixed cone 31 will drive the second rack 34 and the third rack 36 to separate. When the second rack 34 continues to slide to the right, the second rack 34 will continuously mesh with and separate from the third rack 36 until the arc surface of the telescopic column 21 slides over the arc surface of the fixed cone 31, and the first slider 37 connected below the fixed cone 31 slides in the first slide groove 38 in the direction away from the telescopic column 21. At the same time, the second racks 34 and the third racks 36 are fixed on the fixed cone 31. The slider 310 slides in the second slide groove 313, and the clamping block 311 is long and has the same length as the second slide groove 313. Each second slide groove 313 has two clamping blocks 311. The two clamping blocks 311 are connected to the second slide groove 313 with a support spring 312 away from the second slider 310. The second slider 310 is located between the two clamping blocks 311. The second slider 310 can slide between the two clamping blocks 311. The clamping block 311 can maintain a certain support force up and down on the fixed cone 31 to maintain The fixed cone 31 will not move left and right, because when the fixed cone 31 is extended, the second rack 34 and the third rack 36 slide, so the fixed cone 31 will move up and down slightly. The clamping block 311 is connected with the support spring 312 to make the clamping block 311 closer to the second slider 310. When the arc base 32 slides over the fixed cone 31, the second rack 34 no longer slides and engages with the third rack 36. At this time, the fixed cone 31 is inserted into the soil on both sides of the column 11, so that the friction of the column 11 in the ground is increased, and the stability is improved. ;

[0034] Specifically, the descending mechanism 4 includes a fixed block 42, a deformable spring 214 is nested on the periphery of the fixed block 42, one end of the fixed block 42 is fixedly connected to the second right-angle rack 212, and the other end of the fixed block 42 is fixedly connected to a wire rope 43, the wire rope 43 is pulled by a fixed pulley 44, and the wire rope 43 extends to the outside of the column body 11 and is fixedly connected to the handle 41; when the telescopic column 21 is raised too high, the handle 41 can be pulled, and the handle 41 drives the wire rope 43 to pass through the fixed pulley 44 to drive the fixed block 42 away from the second right-angle rack 21 2, after the fixing block 42 is pulled, the deformation spring 214 contracts, driving the second right-angle rack 212 to move away from the first right-angle rack 210. When the second right-angle rack 212 is not engaged with the first right-angle rack 210, the telescopic column 21 has no supporting force and will slide downward. After sliding to a suitable position, the handle 41 is released. At this time, the fixing block 42 moves toward the second right-angle rack 212, and the deformation spring 214 stretches to drive the second right-angle rack 212 to approach the first right-angle rack 210 and the two are engaged. The telescopic column 21 has a supporting force and no longer moves.

[0035] When the present invention is used, the column body 11 is driven into the ground. The column body 11 is cast by concrete 12. The main body of the column body 11 is in the shape of a round tube, but has a certain thickness. A steel bar 13 is arranged in the tube wall to increase the rigidity of the column body 11 and prevent the column body 11 from being directly disconnected after the concrete 12 is broken. At the same time, the inner wall of the column body 11 is fixedly connected with a steel ring layer 15. The steel ring layer 15 supports the inside, which can also allow the inside of the column body 11 to have a certain supporting capacity to prevent the column body 11 from being broken due to external extrusion. The column head 14 at the lower end of the column body 11 is a sharp steel material, which makes it easier to drive the column body 11 into the ground. After the column body 11 is driven into the ground, the opening 26 is kept on the ground, and then the guide frame 27 in the half gear 24 is put on the fixed column 28, and then the handle 29 is held to move forward. The column body 11 is pushed in the direction of the telescopic column 21. Since the fixed column 28 is stationary, the half gear 24 is close to the telescopic column 21 and meshes with the first rack 22 on the telescopic column 21. Then the handle 29 is pressed down, and the fixed column 28 is used as a fulcrum. When the handle 29 is pressed down, the half gear 24 will drive the first rack 22 upward. At the same time, when the handle 29 is pressed down, the first right-angle rack 210 exerts pressure on the second right-angle rack 212, and the deformation spring 214 will shrink. Therefore, the first right-angle rack 210 slides upward relative to the second right-angle rack 212. After the sliding is completed, the two will be tightly engaged. At the same time, the telescopic column 21 is lifted partially, and then the handle 29 is pulled to slide it in the fixed column 28 away from the first rack 22, and then the handle 29 is lifted up, using the fixed column 28 as a fulcrum. The half gear 24 rotates and resets to the position where it was pressed down for the first time, and then the handle 29 is pushed again to make the half gear 24 mesh with the first rack 22, and the handle 29 is pressed down again to lift the telescopic column 21, and the telescopic column 21 can be lifted up continuously by repeating the process repeatedly to reach a suitable height. When the telescopic column 21 is continuously lifted up, the arc base 32 connected to the lower end of the telescopic column 21 will rise accordingly, and will contact the fixed cone 31 when rising. Because the end of the fixed cone 31 close to the telescopic column 21 is an arc-shaped structure, the fixed cone 31 is squeezed and moved away from the telescopic column 21 after contact, and the compression spring 39 will be compressed, the fixed cone 31 will drop, and the second rack 34 will move away from the telescopic column 21 relative to the third rack 36, and the first slider 37 connected below the fixed cone 31 will move in the direction away from the telescopic column 21. The first slide groove 38 slides in the direction away from the telescopic column 21, and at the same time, the second slider 310 on the two adjacent surfaces of the fixed cone 31 to which the second rack 34 belongs slides in the second slide groove 313, and the clamping block 311 can maintain a certain supporting force up and down on the fixed cone 31 to prevent the fixed cone 31 from moving left and right. Because the fixed cone 31 slides between the second rack 34 and the third rack 36 when the fixed cone 31 is extended, the fixed cone 31 will move up and down slightly. The clamping block 311 is connected by the supporting spring 312 to make the clamping block 311 closer to the second slider 310. When the arc base 32 slides over the fixed cone 31, the second rack 34 no longer slides and engages with the third rack 36. At this time, the fixed cone 31 is inserted into the soil on both sides of the column body 11.The friction of the column body 11 underground is increased to improve stability. When the telescopic column 21 is raised too high, the handle 41 can be pulled, and the handle 41 drives the wire rope 43 to drive the fixed block 42 in the direction away from the second right-angle rack 212 through the fixed pulley 44. After the fixed block 42 is pulled, the deformation spring 214 contracts and drives the second right-angle rack 212 to move away from the first right-angle rack 210. When the second right-angle rack 212 is not engaged with the first right-angle rack 210, the telescopic column 21 has no supporting force and will slide downward. After sliding to a suitable position, the handle 41 is released. At this time, the fixed block 42 moves in the direction close to the second right-angle rack 212. The deformation spring 214 stretches and drives the second right-angle rack 212 to approach the first right-angle rack 210 and the two are engaged. The telescopic column 21 has a supporting force and no longer moves.

[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 are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. A reinforced concrete prefabricated part, characterized in that: The utility model comprises a column mechanism (1), a lifting mechanism (2), a stabilizing mechanism (3) and a descending mechanism (4); the lifting mechanism (2) is movably connected in a steel ring layer (15) in the column mechanism (1); a second right-angle rack (212) connected to the steel ring layer (15) in the column mechanism (1) clamps the lifting mechanism (2) in the column mechanism (1); the stabilizing mechanism (3) is on both sides of the lifting mechanism (2); the stabilizing mechanism (3) is installed in the cross section of the column mechanism (1); and the descending mechanism (4) is fixedly connected to the second right-angle rack (212) in the lifting mechanism (2); The column structure (1) comprises a column body (11), the column body (11) is made of concrete (12), a steel bar (13) is fixed inside the concrete (12), the column body (11) is tubular, the inside of the column body (11) is hollow, a steel ring layer (15) is fixedly connected to the inner wall of the column body (11), and a column head (14) is fixedly connected to the lower end of the column body (11); The lifting mechanism (2) comprises a telescopic column (21), wherein the telescopic column (21) is inside the steel ring layer (15), a first rack (22) is fixedly connected to one side of the telescopic column (21), the first rack (22) is meshed with a half gear (24), the half gear (24) is inside an opening (26), the opening (26) is arranged on the column body (11), a handle (29) is fixedly connected to the half gear (24), the handle (29) extends outside the opening (26), a guide frame (27) is provided on the half gear (24), the guide frame (27) is hung on a fixed column (28), the guide frame (27) and the fixed column (28) are slidably connected, one end of the fixed column (28) is fixedly connected to the side of the opening (26), and the other end of the fixed column (28) is not connected to any object; The lifting mechanism (2) further comprises a second screw hole (216), wherein the second screw hole (216) is provided at the top end of the telescopic column (21), and a first screw hole (215) is arranged around the second screw hole (216), and the first screw hole (215) is also provided at the top end of the telescopic column (21); The lifting mechanism (2) further comprises a first right-angle rack (210), the first right-angle rack (210) being fixedly connected to a side of the telescopic column (21) away from the first rack (22), the first right-angle rack (210) being meshed with a second right-angle rack (212), a deformation spring (214) being fixedly connected to the second right-angle rack (212), the other end of the deformation spring (214) being fixedly connected to the inner wall of the steel ring layer (15); The stabilizing mechanism (3) comprises a fixed cone (31), the fixed cone (31) is in a hollow (33), the hollow (33) is provided on the column body (11), the end of the fixed cone (31) close to the telescopic column (21) is an arc-shaped structure, the lower end of the telescopic column (21) is fixedly connected to a curved surface base (32), the upper end of the fixed cone (31) is fixedly connected to a second rack (34), the second rack (34) is meshed with a third rack (36), and the third rack (36) is fixedly connected to the upper wall of the hollow (33); The stabilizing mechanism (3) further comprises a first slider (37), the first slider (37) being fixedly connected to the lower end of the fixed cone (31), the first slider (37) being slidably connected to a first slide groove (38), the first slide groove (38) being fixedly connected to the upper end of a compression spring (39), the lower end of the compression spring (39) being fixedly connected to the lower wall of the cavity (33), the second sliders (310) being fixedly connected to two adjacent surfaces of the fixed cone (31) to which the second rack (34) is fixed, and the second The slider (310) is slidably connected to the second slide groove (313), and the second slide groove (313) is fixedly connected to the inner wall of the cavity (33). The upper end and the lower end of the second slider (310) are respectively provided with clamping blocks (311), and the second slider (310) and the clamping block (311) are slidably connected. A support spring (312) is fixedly connected to the surface of the clamping block (311) away from the second slider (310), and the other end of the support spring (312) is fixedly connected in the second slide groove (313); The descending mechanism (4) comprises a fixed block (42), a deformable spring (214) is nested on the periphery of the fixed block (42), one end of the fixed block (42) is fixedly connected to the second right-angle rack (212), the other end of the fixed block (42) is fixedly connected to a steel wire rope (43), the steel wire rope (43) is pulled by a fixed pulley (44), and the steel wire rope (43) extends to the outside of the column body (11) and is fixedly connected to the handle (41); When the telescopic column (21) is raised too high, the handle (41) can be pulled, and the handle (41) drives the wire rope (43) to drive the fixed block (42) in the direction away from the second right-angle rack (212) through the fixed pulley (44). After the fixed block (42) is pulled, the deformation spring (214) contracts, driving the second right-angle rack (212) to move in the direction away from the first right-angle rack (210). When the second right-angle rack (212) is not engaged with the first right-angle rack (210), the telescopic column (21) has no supporting force and will slide downward. After sliding to a suitable position, the handle (41) is released. At this time, the fixed block (42) moves in the direction close to the second right-angle rack (212), and the deformation spring (214) stretches to drive the second right-angle rack (212) close to the first right-angle rack (210) and the two are engaged. The telescopic column (21) has a supporting force and no longer moves.

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