CN220978901U - Can have enough to meet need post-cast strip protection strutting arrangement - Google Patents

Abstract

The utility model relates to a turnover post-pouring belt protection supporting device, which relates to the technical field of post-pouring belt protection equipment and comprises a strip-shaped stabilizing plate, wherein two telescopic expansion pieces are symmetrically arranged on the stabilizing plate, the telescopic expansion pieces are in sliding fit with the stabilizing plate, the stabilizing plate is positioned in an opening of the telescopic expansion piece, and the top surface of the stabilizing plate is provided with two synchronous opening and closing assemblies matched with the telescopic expansion pieces; the telescopic expansion piece is provided with a side clamping assembly matched with the stabilizing plate, the side clamping assembly is provided with a side plate matched with the stabilizing plate, and the side clamping assembly is provided with a positioning assembly matched with the side plate; the bottom surface is provided with a stabilizing base frame, and the stabilizing base frame is provided with a lifting rod matched with the stabilizing plate. The utility model can effectively solve the problems of corrosion, deformation and the like of the steel bar caused by insufficient protection of the post-cast strip in the existing building engineering through the unique structural design, and provides a plurality of structural schemes which can be selected according to specific requirements.

Description

Can have enough to meet need post-cast strip protection strutting arrangement

Technical Field

The utility model relates to the technical field of post-cast strip protection equipment, in particular to a turnover post-cast strip protection supporting device.

Background

In the construction engineering, the floor with larger building area is usually required to be provided with post-cast strips so as to prevent harmful cracks possibly generated by the cast-in-situ reinforced concrete structure due to uneven self shrinkage or uneven settlement. At present, the interception of post-cast strips often uses battens and steel wires, and is often not effectively protected in the concrete pouring process, or is covered by temporary plywood.

However, if the post-cast strip is intercepted by using a square block and a steel wire mesh, some problems exist. Firstly, the post-cast strip size cannot be accurately controlled due to improper interception or oversized reinforcement protection layer. Secondly, the post-cast strip is not protected in the concrete pouring process, so that the steel bars are trampled to deform, and the spilled concrete is difficult to clean. In addition, when the temporary plywood is used for covering the post-cast strip, firstly, the temporary plywood is easily soaked in water to cause damage, the cost is increased by repeated replacement, and the concrete is still trampled to disturb the reinforcing steel bars before being solidified due to insufficient rigidity of the plywood, so that the concrete is cracked; secondly, the existing temporary plywood is mostly cut by using a template or a new template. This approach has the problem of material wastage. Over time, the post-cast strip protection device of the template is often damaged by trampling, and the protection effect is limited, so that the post-cast strip protection device is not attractive. Moreover, most of the post-cast strip protection devices for templates cannot provide good protection effects in the construction process, and the post-cast strip protection devices often cause the consequences of corrosion, serious deformation and the like of large-area reinforcing steel bars.

How to solve the technical problems is the subject of the present utility model.

Disclosure of Invention

In order to solve the defects in the prior art, the utility model provides the vibration-inhibiting carbon fiber pipeline bracket which is reasonable in design, safe and reliable, and the construction process of the post-cast strip can be effectively supported through the technical advantages of stability, adjustability, synchronism, angle control, stable base frame, lifting adjustment and the like, and the position, the size and the connection stability of the post-cast strip are ensured. These advantages can improve construction efficiency, reduce construction risk, and improve engineering quality.

The technical scheme adopted for solving the technical problems is as follows: the utility model provides a post-cast strip protection strutting arrangement that can have enough to meet need, includes and is banding stabilizer plate, the stabilizer plate symmetry is provided with two flexible extension pieces, flexible extension piece with stabilizer plate sliding fit, be provided with two flexible extension piece complex synchronous opening and closing subassembly on the top surface of stabilizer plate; the telescopic expansion piece is provided with a side clamping assembly matched with the stabilizing plate, the side clamping assembly is provided with a side plate matched with the stabilizing plate, and the side clamping assembly is provided with a positioning assembly matched with the side plate; the bottom surface is provided with a stabilizing base frame, and the stabilizing base frame is provided with a lifting rod matched with the stabilizing plate.

Further, the top surface both sides department of stabilizer board all be provided with synchronous opening and closing subassembly complex direction bar piece, flexible extension piece including being located stabilizer board's below department, and with stabilizer board sliding fit's laminating board, just be provided with the side link on the laminating board, be provided with on the side link with direction bar piece sliding fit's expansion bracket, the expansion bracket with synchronous opening and closing subassembly cooperation, side clamping assembly sets up on the expansion bracket.

Two specific structures of synchronous opening and closing assemblies are preferably provided.

Firstly, synchronous opening and closing assembly is including setting up the synchro rack on the stabilizer plate, be provided with driving motor on the synchro rack, driving motor's output department is provided with synchronous gear, synchronous gear's top and bottom both ends be provided with respectively with synchronous gear tooth complex drive rack, drive rack's direction of movement with the length direction of stabilizer plate is perpendicular, the synchro rack seted up with drive rack complex spacing groove, be provided with in the spacing groove and be used for connecting drive rack the connecting plate of flexible extension piece.

Secondly, synchronous opening and closing assembly is including setting up synchronous frame on the stabilizer, just set up the slip frame on the synchronous frame, the length direction of slip frame with the length direction of stabilizer is perpendicular, just set up on the synchronous frame with synchronous frame vertically drive frame, just be provided with on the drive frame with drive frame sliding fit's drive bracket, just the symmetry is provided with two promotion connecting rods on the drive bracket, the one end of promotion connecting rod be provided with slip frame complex sliding seat, be provided with on the sliding seat be used for with the connecting portion of flexible extension.

Preferably, the synchronous Zhang Gezhang closing components are provided with a plurality of synchronous opening and closing components, and the synchronous opening and closing components are uniformly arranged along the length of the stabilizing plate.

Further, the side clamping assembly comprises a clamping frame in running fit with the telescopic expansion piece, a side plate in sliding fit with the clamping frame is arranged in the clamping frame, a telescopic soft plate matched with the telescopic expansion piece (200) is arranged on the side plate, a positioning assembly matched with the side plate is arranged on the clamping frame, and an angle control unit matched with the clamping frame is arranged on the telescopic expansion piece.

The angle control unit comprises a hinge seat arranged on the clamping frame, the hinge seat is provided with a support bracket rotationally connected with the hinge seat, a moving groove is horizontally formed in the telescopic expansion piece, a linkage seat rotationally connected with the support bracket is arranged in the moving groove, and a linear driving piece matched with the linkage seat is arranged in the moving groove.

Further, the locating component is including setting up locating rack on the holder, just the locating rack is provided with a plurality of, and a plurality of pricing frame is followed the length direction of sideboard evenly sets up, be provided with on the locating rack with sideboard complex set screw.

Further, the stabilizing base frame comprises a support frame which is 匚 -shaped, a lifting unit which is matched with the lifting rod is arranged on the support frame, and the stabilizing plate is arranged at the bottom end of the lifting rod.

The support frame includes the backup pad that the level set up, just the both ends of backup pad all are provided with the support landing leg, be provided with on the support landing leg with support landing leg complex fixed column, be provided with on the fixed column with ground complex fastening unit.

The fastening unit is in including setting up a plurality of first firm circular slot of tip in the fixed column, the bottom department of fixed column is provided with a plurality of second and stabilizes the circular slot, be provided with first firm rotation ring in the first firm circular slot, just be provided with first connecting piece on the first firm rotation ring, be provided with the firm rotation ring of second in the second firm circular slot, just the firm rotation ring of second is provided with the second connecting piece, just first connecting piece is connected with the upper end of firm toper frame, just the bottom of firm toper frame with the second connecting piece is connected.

The utility model combines the strip-shaped stabilizing plate and the telescopic expansion piece, so that the whole system has higher stability. The stable plate and the telescopic expansion piece are reliably connected through sliding fit, and the top is provided with a synchronous opening and closing assembly, so that the stability of the system is further enhanced. And through the structural design of stabilizer plate, flexible extension piece and side centre gripping subassembly, can provide good stability, prevent that the post-cast strip from taking place displacement or slope at pouring in-process.

The telescopic extension piece and the side clamping component have adjustable functions, can be flexibly adjusted and adapted according to specific construction requirements and the size of the post-cast strip, and ensure the accurate position and size of the post-cast strip.

The synchronous opening and closing assembly adopts two preferable specific structural designs, and the mechanisms can ensure the synchronous movement of the stabilizing plates, so that the device has high synchronism and accuracy in the adjustment and operation processes.

The side clamping assembly comprises an angle control unit, and the angle control of the side plates is realized through structures such as a hinge seat, a supporting bracket, a control frame and the like. Therefore, the angle of the post-cast strip can be adjusted according to actual needs, and the tight and stable connection between the post-cast strip and a structure is ensured.

The stable base frame can provide stable supporting and fixing functions, and ensures that the device is not easy to incline or move in the using process. And the lifting unit in the stable base frame realizes lifting adjustment of the device through structures such as a jacking hydraulic cylinder, a lifting plate, a fastening seat and the like. Therefore, the post-cast strip construction device can be adjusted according to the height of the post-cast strip, and can meet the post-cast strip construction requirements of different heights.

Drawings

FIG. 1 is a schematic three-dimensional structure of the present utility model;

FIG. 2 is a three-dimensional block diagram of the stabilization base of the present utility model;

FIG. 3 is a schematic view of a three-dimensional structure of the present utility model except for a stabilizing pedestal;

FIG. 4 is a schematic view of the structure at A of the present utility model;

FIG. 5 is a schematic diagram of the structure of the present utility model at B;

FIG. 6 is a side view of the present utility model;

Wherein, the attached drawings are as follows: 100. a stabilizing plate; 110. a guide bar block; 200. a telescoping extension; 210. bonding plates; 220. a side connecting frame; 230. a telescopic frame; 300. a synchronous opening and closing assembly; 310. a synchronous frame; 320. a synchronizing gear; 330. a drive rack; 340. a connecting plate; 350. a sliding frame; 360. a drive rack; 370. a drive bracket; 380. pushing the connecting rod; 390. a sliding seat; 400. a side clamping assembly; 410. a clamping frame; 420. an angle control unit; 421. a hinge base; 422. a support bracket; 423. a moving groove; 424. a linkage seat; 500. a side plate; 600. a positioning assembly; 610. a positioning frame; 620. a set screw; 700. stabilizing the base frame; 710. a lifting rod; 720. a support frame; 721. a support plate; 722. a support leg; 723. fixing the column; 724. a fastening unit; 724-1, a first stationary rotating ring; 724-2, a second stationary rotating ring; 724-3, a first connector; 724-4, a second connector; 724-5, stabilizing the conical frame; 730. a lifting unit; 731. a fixing seat; 732. jacking a hydraulic cylinder; 733. a lifting plate; 734. and a fastening seat.

Detailed Description

Referring to fig. 1 to 4, a turnover post-cast strip protection support device comprises a strip-shaped stabilizing plate 100, wherein two telescopic expansion pieces 200 are symmetrically arranged on the stabilizing plate 100, the telescopic expansion pieces 200 are in sliding fit with the stabilizing plate 100, and a synchronous opening and closing assembly 300 matched with the two telescopic expansion pieces 200 is arranged on the top surface of the stabilizing plate 100; the telescopic expansion piece 200 is provided with a side clamping assembly 400 matched with the stabilizing plate 100, the side clamping assembly 400 is provided with a side plate 500 matched with the stabilizing plate 100, and the side clamping assembly 400 is provided with a positioning assembly 600 matched with the side plate 500; a stabilizing base frame 700 is provided on the bottom surface, and a lifting rod 710 engaged with the stabilizing plate 100 is provided on the stabilizing base frame 700.

The telescopic expansion piece 200 and the synchronous opening and closing assembly 300 can adjust the total length of equipment according to the requirement and adapt to post-cast strips with different sizes. The synchronous opening and closing assembly 300 can synchronously control the expansion members 200 at two sides, and ensures stable expansion. The side clamping assembly 400 and the side plates 500 can clamp both sides of the post-cast strip to prevent concrete from leaking. The positioning assembly 600 can fix the position of the side plate 500, ensuring clamping reliability. The angle control unit 420 can adjust the angle between the side plate 500 and the post-cast strip, and is convenient to operate. The stabilizing pedestal 700 and lifting bar 710 may adjust the equipment height to accommodate post-cast strip at different heights. The stable base frame 700 is detachable in structure and can be used in a turnover way, so that the material waste is reduced.

Further, the two sides of the top surface of the stabilizing plate 100 are respectively provided with a guide bar 110 matched with the synchronous opening and closing assembly 300, the telescopic expansion member 200 comprises a laminating plate 210 positioned below the stabilizing plate 100 and slidingly matched with the stabilizing plate 100, a side connecting frame 220 is arranged on the laminating plate 210, a telescopic frame 230 slidingly matched with the guide bar 110 is arranged on the side connecting frame 220, the telescopic frame 230 is matched with the synchronous opening and closing assembly 300, and the side clamping assembly 400 is arranged on the telescopic frame 230.

Two specific configurations of the synchronous opening and closing assembly 300 are preferably provided.

First, synchronous opening and closing subassembly 300 is including setting up synchronous frame 310 on the stabilizer 100, be provided with driving motor on the synchronous frame 310, driving motor's output department is provided with synchronous gear 320, synchronous gear 320's top and bottom both ends be provided with respectively with synchronous gear 320 meshing tooth complex drive rack 330, drive rack 330's direction of movement with the length direction of stabilizer 100 is perpendicular, synchronous frame 310 seted up with drive rack 330 complex spacing groove, be provided with in the spacing groove and be used for connecting drive rack 330 the connecting plate 340 of flexible extension 200.

Secondly, the synchronous opening and closing assembly 300 comprises a synchronous frame 310 arranged on the stabilizing plate 100, a sliding frame 350 is arranged on the synchronous frame 310, the length direction of the sliding frame 350 is perpendicular to the length direction of the stabilizing plate 100, a driving frame 360 perpendicular to the synchronous frame 310 is arranged on the synchronous frame 310, a driving bracket 370 in sliding fit with the driving frame 360 is arranged on the driving frame 360, two pushing connecting rods 380 are symmetrically arranged on the driving bracket 370, one end of each pushing connecting rod 380 is provided with a sliding seat 390 in matching with the sliding frame 350, and a connecting part for connecting the telescopic expansion piece 200 is arranged on the sliding seat 390.

The preferred embodiment provides two different configurations of the synchronized opening and closing assembly 300. One of them is to provide a driving motor on the stabilizing plate 100 and a synchronous gear 320 at the output end, and to implement movement by a driving rack 330 engaged with the gear; the other is to open the sliding frame 350 on the stabilizing plate 100 and realize the movement by driving the bracket 370, pushing the connecting rod 380, etc.

Preferably, the synchronization Zhang Gezhang units are provided in a plurality, and the synchronization opening and closing units 300 are uniformly provided along the length of the stabilizing plate 100.

Further, the side clamping assembly 400 includes a clamping frame 410 rotatably matched with the expansion member 200, a side plate 500 slidably matched with the clamping frame 410 is disposed in the clamping frame 410, a flexible plate matched with the expansion member 200 is disposed on the side plate, a positioning assembly 600 matched with the side plate 500 is disposed on the clamping frame 410, and an angle control unit 420 matched with the clamping frame 410 is disposed on the expansion member 200.

Two specific configurations of the angle control unit 420 are preferably provided.

First, the angle control unit 420 includes a hinge seat 421 disposed on the clamping frame 410, and the hinge seat 421 is provided with a support frame 422 rotatably connected to the hinge seat 421, and the telescopic expansion member 200 is horizontally provided with a moving groove 423, and a linkage seat 424 rotatably connected to the support frame 422 is disposed in the moving groove 423, and a linear driving member engaged with the linkage seat 424 is disposed in the moving groove 423.

Second, the angle control unit 420 includes a rotating frame disposed on the telescopic expansion member 200, and the telescopic expansion member 200 is provided with a rotating shaft rotationally matched with the rotating frame, the telescopic expansion member 200 is provided with a control frame matched with the rotating frame, and the control frame is provided with a control gear, and the clamping frame 410 is provided with a rotating gear engaged with the control gear.

The first is to realize the rotation connection through the hinge seat 421, the support bracket 422, etc., and adjust the angle through the moving groove 423, the sliding seat 390 and the linear driving member; the second is to realize the angle adjustment through the rotating frame, the control frame and the control gear.

Further, the positioning assembly 600 includes a positioning frame 610 disposed on the clamping frame 410, and the positioning frame 610 is provided with a plurality of pricing frames, and the plurality of pricing frames are uniformly disposed along the length direction of the side board 500, and the positioning frame 610 is provided with positioning screws 620 matched with the side board 500.

Further, the stabilizing base frame includes a support frame 720 having a 匚 shape, and the support frame 720 is provided with a lifting unit 730 cooperating with the lifting rod 710, and the stabilizing plate 100 is disposed at the bottom end of the lifting rod 710.

The supporting frame 720 comprises a supporting plate 721 horizontally arranged, supporting legs 722 are arranged at two ends of the supporting plate 721, fixing columns 723 matched with the supporting legs 722 are arranged on the supporting legs 722, and fastening units 724 matched with the ground are arranged on the fixing columns 723.

The fastening unit 724 includes a plurality of first stable round grooves disposed at the middle end of the fixing column 723, a plurality of second stable round grooves are disposed at the bottom end of the fixing column 723, a first stable rotating ring 724-1 is disposed in the first stable round grooves, a first connecting piece 724-3 is disposed on the first stable rotating ring 724-1, a second stable rotating ring 724-2 is disposed in the second stable round grooves, a second connecting piece 724-4 is disposed on the second stable rotating ring 724-2, the first connecting piece 724-3 is connected with the upper end of the stable conical frame 724-5, and the bottom end of the stable conical frame is connected with the second connecting piece 724-4.

Further, the lifting unit 730 includes two fixing seats 731 disposed on the support plate 721 opposite to each other, the fixing seats 731 are provided with lifting hydraulic cylinders 732, moving ends of the two lifting hydraulic cylinders 732 are connected to a same lifting plate 733, a fastening seat 734 is disposed at a center of the lifting plate 733, fastening grooves matched with the lifting rod 710 are formed in the fastening seat 734, and fastening screws matched with the lifting rod 710 are disposed on the fastening seat 734.

The method comprises the following specific steps:

The apparatus is assembled around the post-cast strip by first adjusting the height of the lifting bars 710 with the lifting units 730 so that the stabilizing plates 100 are in the proper position over the post-cast strip. The synchronous opening and closing assembly 300 is opened, and the two-side expansion members 200 are driven to synchronously shrink inwards or expand outwards, so that the two sides of the stabilizing plate 100 clamp the post-cast strip. The side panels 500 of the side clamp assembly 400 slidably engage the telescoping expansion member 200 and move with adjustment of the telescoping expansion member 200 to provide a leak-proof function. The positioning assembly 600 fixes the position of the side plate 500. The angle control unit 420 may adjust the angle of the side plate 500 to be in an optimal clamping state with the post-cast strip. The fixing columns 723 on the supporting base frame are fixed to the ground by fastening units 724, improving overall stability.

When the concrete is poured, the stabilizing plates 100 can effectively prevent the concrete from leaking out and protect the post-cast strip. After pouring is completed, the telescopic expansion piece 200 is retracted, and the disassembling device can be used in a turnover mode. The device simple structure, convenient to use can install fast and dismantle, has improved the efficiency of construction of post-cast strip protection greatly. Compared with a disposable structure, the novel energy-saving device can be recycled and has good economical efficiency.

The technical features of the present utility model that are not described in the present utility model may be implemented by or using the prior art, and are not described in detail herein, but the above description is not intended to limit the present utility model, and the present utility model is not limited to the above examples, but is also intended to be within the scope of the present utility model by those skilled in the art.

Claims (10)

1. Can have enough to meet need post-cast strip protection strutting arrangement, its characterized in that: the device comprises a strip-shaped stabilizing plate (100), wherein the stabilizing plate (100) is symmetrically provided with two telescopic expansion pieces (200), the telescopic expansion pieces (200) are in sliding fit with the stabilizing plate (100), and the top surface of the stabilizing plate (100) is provided with two synchronous opening and closing assemblies (300) matched with the telescopic expansion pieces (200);

The telescopic expansion piece (200) is provided with a side clamping assembly (400) matched with the stabilizing plate (100), the side clamping assembly (400) is provided with a side plate (500) matched with the stabilizing plate (100), and the side clamping assembly (400) is provided with a positioning assembly (600) matched with the side plate (500);

A stabilizing base frame (700) is arranged on the bottom surface, and a lifting rod (710) matched with the stabilizing plate (100) is arranged on the stabilizing base frame (700).

2. The epicyclic post-cast strip protective support according to claim 1, wherein: the utility model discloses a stabilizer bar, including stabilizer bar (100), top surface both sides department of stabilizer bar (100) all be provided with synchronous opening and closing subassembly (300) complex direction bar (110), flexible extension piece (200) including being located stabilizer bar (100) below department, and with stabilizer bar (100) sliding fit's laminating board (210), just be provided with side link (220) on laminating board (210), be provided with on side link (220) with direction bar (110) sliding fit's expansion bracket (230), expansion bracket (230) with synchronous opening and closing subassembly (300) cooperation, side centre gripping subassembly (400) set up on expansion bracket (230).

3. The epicyclic post-cast strip protective support according to claim 1, wherein: the synchronous opening and closing assembly (300) comprises a synchronous frame (310) arranged on the stabilizing plate (100), a driving motor is arranged on the synchronous frame (310), a synchronous gear (320) is arranged at the output end of the driving motor, driving racks (330) which are meshed with the synchronous gear (320) are respectively arranged at the top end and the bottom end of the synchronous gear (320), the moving direction of the driving racks (330) is perpendicular to the length direction of the stabilizing plate (100), limiting grooves matched with the driving racks (330) are formed in the synchronous frame (310), and connecting plates (340) used for connecting the driving racks (330) and the telescopic expansion pieces (200) are arranged in the limiting grooves.

4. The epicyclic post-cast strip protective support according to claim 1, wherein: the synchronous opening and closing assembly (300) comprises a synchronous frame (310) arranged on the stabilizing plate (100), a sliding frame (350) is arranged on the synchronous frame (310), the length direction of the sliding frame (350) is perpendicular to the length direction of the stabilizing plate (100), a driving frame (360) perpendicular to the synchronous frame (310) is arranged on the synchronous frame (310), a driving support (370) which is in sliding fit with the driving frame (360) is arranged on the driving frame (360), two pushing connecting rods (380) are symmetrically arranged on the driving support (370), one end of each pushing connecting rod (380) is provided with a sliding seat (390) matched with the sliding frame (350), and a connecting part for being connected with the telescopic expansion piece (200) is arranged on the sliding seat (390).

5. The epicyclic post-cast strip protective support according to claim 1, wherein: side centre gripping subassembly (400) include with flexible extension piece (200) normal running fit's clamping frame (410), be provided with in clamping frame (410) with clamping frame (410) sliding fit's side board (500), just be provided with on the side board with flexible extension piece (200) complex flexible soft board, be provided with on clamping frame (410) with side board (500) complex locating component (600), be provided with on flexible extension piece (200) with clamping frame (410) complex angle control unit (420).

6. The epicyclic post-cast strip protective support according to claim 1, wherein: the angle control unit (420) comprises a hinge seat (421) arranged on the clamping frame (410), the hinge seat (421) is provided with a supporting bracket (422) rotationally connected with the hinge seat (421), a moving groove (423) is horizontally arranged on the telescopic expansion piece (200), a linkage seat (424) rotationally connected with the supporting bracket (422) is arranged in the moving groove (423), and a linear driving piece matched with the linkage seat (424) is arranged in the moving groove (423).

7. The epicyclic post-cast strip protective support according to claim 1, wherein: the locating component (600) comprises a locating rack (610) arranged on the clamping rack (410), the locating rack (610) is provided with a plurality of pricing racks, the plurality of pricing racks are uniformly arranged along the length direction of the side board (500), and locating screws (620) matched with the side board (500) are arranged on the locating rack (610).

8. The epicyclic post-cast strip protective support according to claim 1, wherein: the stabilizing base frame comprises support frames (720) (422) which are 匚 -shaped, lifting units (730) matched with the lifting rods (710) are arranged on the support frames (720) (422), and the stabilizing plates (100) are arranged at the bottom ends of the lifting rods (710).

9. The epicyclic post-cast strip protective support according to claim 1, wherein: the support frame (720) comprises a support plate (721) which is horizontally arranged, support legs (722) are arranged at two ends of the support plate (721), fixing columns (723) which are matched with the support legs (722) are arranged on the support legs (722), and fastening units (724) which are matched with the ground are arranged on the fixing columns (723).

10. The epicyclic post-cast strip protective support according to claim 1, wherein: the fastening unit (724) comprises a plurality of first stable round grooves arranged at the middle end part of the fixing column (723), a plurality of second stable round grooves are arranged at the bottom end part of the fixing column (723), a first stable rotating ring (724-1) is arranged in the first stable round grooves, a first connecting piece (724-3) is arranged on the first stable rotating ring (724-1), a second stable rotating ring (724-2) is arranged in the second stable round grooves, a second connecting piece (724-4) is arranged on the second stable rotating ring (724-2), the first connecting piece (724-3) is connected with the upper end part of the stable conical frame (724-5), and the bottom end of the stable conical frame is connected with the second connecting piece (724-4).