CN215502220U

CN215502220U - Assembled superimposed sheet show shelf

Info

Publication number: CN215502220U
Application number: CN202120760058.1U
Authority: CN
Inventors: 童志芳; 孙玉兵; 郭联平; 楼旭平; 周昇; 陆航洋; 庄蓄江
Original assignee: Zhejiang Guangming Construction Technology Co Ltd
Current assignee: Zhejiang Guangming Construction Technology Co Ltd
Priority date: 2021-04-14
Filing date: 2021-04-14
Publication date: 2022-01-14
Anticipated expiration: 2031-04-14

Abstract

The utility model provides an assembled laminated slab display rack, which relates to the technical field of building material manufacturing and aims to solve the problem that the reinforcing steel bar structures on the periphery of the laminated slab used for display are usually exposed and easily cause hanging and rubbing on pedestrians during display, and comprises a main body, a support plate, a mounting seat and an upright post, wherein the main body is provided with a plurality of reinforcing steel bar structures; the main body is of a rectangular plate-shaped structure; the supporting plate is arranged below the main body; the mounting seat is mounted below the main body; the stand is installed in the left and right sides of main part, and stand and main part welded connection. The contact pad is used for cladding superimposed sheet steel bar structure all around, prevents steel bar structure scratch pedestrian, and the inside of main part is gone into to the top cap card, and the reinforcing bar of cooperation contact pad to the superimposed sheet is wrapped, rotates the rotating member, through the interlock of lead screw and connecting piece screw thread, alright shift up with making the mounting bracket to expose the side of superimposed sheet, through being connected of backup pad and main part, make the structure whole more firm, also can make this device whole installation process simpler.

Description

Assembled superimposed sheet show shelf

Technical Field

The utility model belongs to the technical field of building material manufacturing, and particularly relates to an assembled type laminated slab display stand.

Background

The laminated slab is an assembled integral floor slab formed by laminating prefabricated slabs and cast-in-place reinforced concrete layers, the laminated floor slab is good in integrity, the upper surface and the lower surface of the slab are smooth, decoration of a finish coat is facilitated, and when the laminated slab is produced and sold by a manufacturer, a display shelf is required to display the laminated slab.

For example, application No.: CN201821426908.9 relates to an assembled type superimposed sheet showing stand, which comprises a base, wherein a superimposed sheet showing stand body is vertically arranged on the base, the superimposed sheet showing stand body is integrally in a door frame-shaped structure, a superimposed sheet supporting piece is arranged at the lower end of the superimposed sheet showing stand body in the door frame-shaped structure, and two ends of the superimposed sheet supporting piece are respectively connected with the inner sides of two ends of the superimposed sheet showing stand body; the lower end of the laminated slab supporting piece is connected with the base through a plurality of connecting pieces; the back of the laminated plate display rack body is also provided with an auxiliary supporting piece matched with the laminated plate display rack body to complete work, and one end of the auxiliary supporting piece is connected with the outer wall of the upper end of the laminated plate display rack body; the other end of the auxiliary support member is in contact with the ground. Through the superimposed sheet show shelf that adopts this project organization, can effectual saving space, can also realize showing superimposed sheet's roughness and smoothness better when area, simultaneously can also effectually prevent that the phenomenon of rupture from appearing in the superimposed sheet.

Based on discovery among the prior art, the superimposed sheet that is used for the show now, its surrounding steel bar structure is naked usually, has the potential safety hazard, causes the scratch to the pedestrian very easily in the show, and because superimposed sheet is heavier, the superimposed sheet that present show shelf was used for the show is fixed in the original place for the most after placing the superimposed sheet, and the convenient removal of inconvenient staff is used for the superimposed sheet of show.

In view of the above, the present invention provides a fabricated display shelf for laminated boards, which is improved in view of the existing structure and defects, and is expected to achieve the purpose of higher practical value.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problems, the utility model provides an assembled type laminated slab display stand, which aims to solve the problems that the peripheral steel bar structures of the existing laminated slabs for display are usually exposed, potential safety hazards exist, pedestrians are easily scratched during display, and due to the fact that the laminated slabs are heavy, most of the existing display stands are fixedly placed in situ after the laminated slabs are placed, and workers are inconvenient to conveniently move the laminated slabs for display.

The purpose and the effect of the assembled type laminated slab display rack are achieved by the following specific technical means:

an assembled type laminated plate display stand comprises a main body, a support plate, a mounting seat and an upright post; the main body is of a rectangular plate-shaped structure, and an included angle of 60 degrees is formed between the upper part of the main body and the horizontal plane; the supporting plate is arranged below the main body and is inserted into the rectangular groove at the rear end of the main body; the mounting seat is mounted below the main body, the rectangular bulge of the main body is inserted into the through hole of the mounting seat, and the rectangular bulge of the mounting seat is inserted into the mounting groove of the main body; the stand is installed in the left and right sides of main part, and stand and main part welded connection.

Furthermore, the main body comprises a contact pad, a top cover and a mounting frame, a T-shaped through hole is formed in the main body, and a rectangular groove is formed in the rear end of the main body; a rectangular bulge is arranged below the main body, and two plate-shaped bulges are arranged on the outer side of the rectangular bulge of the main body; an installation groove is formed between the two plate-shaped bulges of the main body, and round bulges are arranged at the front end and the rear end of the rectangular bulge of the main body; the contact pad is of a plate-shaped structure, and a rectangular through hole is formed in the contact pad; the contact pad is arranged in the T-shaped groove of the main body and is made of flexible materials; the top cover is of a T-shaped structure, a rectangular through hole is formed in the top cover, and the rear end of the top cover is inserted into the T-shaped through hole of the main body; the mounting rack is of a rectangular plate-shaped structure, and a through hole is formed in the mounting rack; a cross-shaped groove is formed in the rear end of the mounting frame, and a screw hole is formed in the bottom of the cross-shaped groove of the mounting frame.

Furthermore, the support plate comprises a connecting piece and a rotating piece, the support plate is of a plate-shaped structure, and rectangular bulges are arranged on the left side and the right side of the support plate; a rectangular bulge is arranged at the rear end of the supporting plate, and a circular through hole is formed in the rectangular bulge of the supporting plate; the top of the circular through hole of the supporting plate is provided with a T-shaped groove, and the supporting plate is connected with the main body through a screw; the connecting piece is of a columnar structure, and the front end of the connecting piece is provided with a cross-shaped plate-shaped bulge; the cross-shaped plate-shaped bulge of the connecting piece is inserted into the cross-shaped groove of the mounting frame, the connecting piece is connected with the mounting frame through a screw, and the connecting piece is inserted into the circular through hole of the supporting plate; a T-shaped groove is formed in the connecting piece, and a thread is formed at the top end of the T-shaped groove of the connecting piece; the rotating piece is of a columnar structure, a T-shaped bulge is arranged at the front end of the rotating piece, and the T-shaped bulge of the rotating piece is inserted into the T-shaped groove of the supporting plate; a circular counter bore is formed in the rotating part, and a screw rod is welded in the counter bore of the rotating part; the screw rod of the rotating piece is meshed with the thread of the connecting piece, and the front end of the screw rod of the rotating piece is provided with a circular limiting plate; the outer side of the rotating piece is provided with four columnar handles.

Furthermore, the mounting seat comprises a sliding chute, a clamping groove and a supporting piece, the mounting seat is of a rectangular hollow structure, and a through hole is formed above the mounting seat; two rectangular through holes are formed in the mounting seat, and two rollers are mounted in the through holes of the mounting seat through rotating shafts; two plate-shaped structures are arranged inside the mounting seat, and a sliding groove is formed above the plate-shaped structures of the mounting seat; the sliding groove is of a round-corner rectangular structure, and a circular bulge of the main body is inserted into the sliding groove; a clamping groove is formed in the mounting seat, and the clamping groove is of a T-shaped structure; the supporting piece is of a plate-shaped structure, and a T-shaped bulge is arranged above the supporting piece; the T-shaped bulge of the supporting piece is inserted into the clamping groove, and the supporting piece is connected with the mounting seat through the spring.

Furthermore, the upright post comprises a guide rod and a damping piece, the upright post is of an L-shaped plate structure, and a spring is connected below the upright post; the guide rod is of a columnar structure and is connected with the upright post in a welding manner; the damping piece is of a columnar structure, and a circular through hole is formed in the damping piece; the guide rod is inserted into the circular through hole of the damping piece, and the damping piece is connected with the upright post through the spring.

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

1. in the device, a main body is arranged, when the laminated slab is placed on the device, the main body supports the structure inside the main body, the contact pad inside the main body is made of flexible materials and is used for coating the steel bar structure exposed out of the periphery of the laminated slab so as to prevent the exposed steel bar structure of the laminated slab from scratching pedestrians, the top cover can be clamped into the main body and is matched with the contact pad to coat the steel bar of the laminated slab, the laminated slab is placed inside the rectangular groove of the mounting frame, the mounting frame is connected with the connecting piece, when the side surface of the laminated slab needs to be observed, the rotating piece is rotated, the mounting frame can be moved upwards through the occlusion of the screw rod and the connecting piece thread, so that the side surface of the laminated slab is exposed, the structure is more stable as a whole through the connection of the support plate and the main body, through the structure, the whole installation process of the device can be simpler, thereby being convenient for workers to move and store the device;

2. in this device, the mount pad has been set up, the inside wheel that is provided with of mount pad, make this device promote by the manpower, thereby make things convenient for this device to remove, mount pad and spout form spacingly to the below of main part, make the main part can slide along the direction of spout inside the rectangle of mount pad top, mount pad and draw-in groove form spacingly to support piece, make support piece can slide along the direction of draw-in groove, and make support piece form certain height apart from ground when needing this device to remove through the spring, when needing to fix this device, need the manpower to step on the support piece of this device downwards, make support piece paste tight ground, then slide the main part to the right side, make the main part remove the top of support piece, make support piece support the main part stand subaerial, thereby realize the quick switching of this device moving state and fixed state.

Drawings

Fig. 1 is a schematic perspective view of the present invention.

Fig. 2 is a schematic view of the internal part structure of the present invention.

Fig. 3 is a schematic cross-sectional view of the support plate of the present invention.

Fig. 4 is a perspective view of the mounting seat of the present invention.

Fig. 5 is a schematic sectional structure view of the mounting base of the present invention.

Fig. 6 is a partially enlarged view of the structure of fig. 1 a according to the present invention.

In the drawings, the corresponding relationship between the component names and the reference numbers is as follows:

1. a main body; 101. a contact pad; 102. a top cover; 103. a mounting frame; 2. a support plate; 201. a connecting member; 202. a rotating member; 3. a mounting seat; 301. a chute; 302. a card slot; 303. a support member; 4. a column; 401. a guide bar; 402. a shock absorbing member.

Detailed Description

The embodiments of the present invention will be described in further detail with reference to the drawings and examples. The following examples are intended to illustrate the utility model but are not intended to limit the scope of the utility model.

In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the utility model. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, e.g., as being fixed or detachable or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example (b):

as shown in figures 1 to 6:

the utility model provides an assembled type laminated plate display stand, which comprises a main body 1, a supporting plate 2, a mounting seat 3 and an upright post 4; the main body 1 is of a rectangular plate-shaped structure, and an included angle of 60 degrees is formed between the upper part of the main body 1 and the horizontal plane; the support plate 2 is arranged below the main body 1, and the support plate 2 is inserted into the rectangular groove at the rear end of the main body 1; the mounting seat 3 is mounted below the main body 1, the rectangular bulge of the main body 1 is inserted into the through hole of the mounting seat 3, and the rectangular bulge of the mounting seat 3 is inserted into the mounting groove of the main body 1; the upright columns 4 are arranged on the left side and the right side of the main body 1, and the upright columns 4 are welded with the main body 1; the main body 1 comprises a contact pad 101, a top cover 102 and a mounting frame 103, a T-shaped through hole is formed in the main body 1, and a rectangular groove is formed in the rear end of the main body 1; a rectangular bulge is arranged below the main body 1, and two plate-shaped bulges are arranged on the outer side of the rectangular bulge of the main body 1; an installation groove is formed between the two plate-shaped bulges of the main body 1, and round bulges are arranged at the front end and the rear end of the rectangular bulge of the main body 1; the contact pad 101 is a plate-shaped structure, and a rectangular through hole is formed in the contact pad 101; the contact pad 101 is arranged in a T-shaped groove of the main body 1, and the contact pad 101 is made of flexible materials; the top cover 102 is of a T-shaped structure, a rectangular through hole is formed in the top cover 102, and the rear end of the top cover 102 is inserted into the T-shaped through hole of the main body 1; the mounting frame 103 is of a rectangular plate-shaped structure, and a through hole is formed in the mounting frame 103; a cross-shaped groove is formed in the rear end of the mounting frame 103, and a screw hole is formed in the bottom of the cross-shaped groove of the mounting frame 103; the main body 1 supports the structure in the main body 1, the contact pad 101 in the main body 1 is made of flexible materials and used for coating a steel bar structure exposed out of the periphery of the laminated slab, so that the pedestrian is prevented from being scratched by the exposed steel bar structure of the laminated slab, the top cover 102 can be clamped in the main body 1 and used for coating the steel bar of the laminated slab by matching with the contact pad 101, the laminated slab is placed in the rectangular groove of the mounting frame 103, and the mounting frame 103 is used for being connected with the connecting piece 201; the supporting plate 2 comprises a connecting piece 201 and a rotating piece 202, the supporting plate 2 is of a plate-shaped structure, and rectangular bulges are arranged on the left side and the right side of the supporting plate 2; a rectangular bulge is arranged at the rear end of the supporting plate 2, and a circular through hole is formed in the rectangular bulge of the supporting plate 2; a T-shaped groove is formed in the top of the circular through hole of the supporting plate 2, and the supporting plate 2 is connected with the main body 1 through a screw; the connecting piece 201 is of a columnar structure, and the front end of the connecting piece 201 is provided with a cross-shaped plate-shaped bulge; the cross-shaped plate-shaped protrusion of the connecting piece 201 is inserted into the cross-shaped groove of the mounting frame 103, the connecting piece 201 is connected with the mounting frame 103 through a screw, and the connecting piece 201 is inserted into the circular through hole of the support plate 2; a T-shaped groove is formed in the connecting piece 201, and a thread is formed at the top end of the T-shaped groove of the connecting piece 201; the rotating member 202 is a columnar structure, a T-shaped protrusion is arranged at the front end of the rotating member 202, and the T-shaped protrusion of the rotating member 202 is inserted into the T-shaped groove of the support plate 2; a circular counter bore is formed in the rotating part 202, and a screw rod is welded in the counter bore of the rotating part 202; a screw rod of the rotating part 202 is meshed with the thread of the connecting part 201, and a circular limiting plate is arranged at the front end of the screw rod of the rotating part 202; the outer side of the rotating member 202 is provided with four cylindrical handles; when the side surface of the laminated slab needs to be observed, the rotating piece 202 is rotated, the mounting frame 103 can be moved upwards through the occlusion of the screw rod and the threads of the connecting piece 201, so that the side surface of the laminated slab is exposed, and the whole structure is more stable through the connection of the support plate 2 and the main body 1; the mounting base 3 comprises a sliding groove 301, a clamping groove 302 and a supporting piece 303, the mounting base 3 is of a rectangular hollow structure, and a through hole is formed above the mounting base 3; two rectangular through holes are formed in the mounting base 3, and two rollers are mounted in the through holes of the mounting base 3 through rotating shafts; two plate-shaped structures are arranged inside the mounting seat 3, and a sliding groove 301 is formed above the plate-shaped structures of the mounting seat 3; the sliding groove 301 is in a round corner rectangular structure, and a round bulge of the main body 1 is inserted into the sliding groove 301; a clamping groove 302 is formed in the mounting base 3, and the clamping groove 302 is of a T-shaped structure; the supporting member 303 is a plate-shaped structure, and a T-shaped protrusion is arranged above the supporting member 303; the T-shaped bulge of the support member 303 is inserted into the clamping groove 302, and the support member 303 is connected with the mounting seat 3 through a spring; wheels are arranged in the mounting seat 3, so that the device can be pushed by manpower, the device is convenient to move, the mounting seat 3 and the sliding groove 301 limit the lower part of the main body 1, the main body 1 can slide in the rectangular inner part above the mounting seat 3 along the direction of the sliding groove 301, the mounting seat 3 and the clamping groove 302 limit the supporting piece 303, the supporting piece 303 can slide along the direction of the clamping groove 302, the supporting piece 303 is enabled to be away from the ground to form a certain height when the device needs to move through a spring, when the device needs to be fixed, the supporting piece 303 of the device needs to be stepped downwards by manpower, the supporting piece 303 is enabled to be attached to the ground, then the main body 1 slides towards the right side, the main body 1 is enabled to move to be above the supporting piece 303, the supporting piece 303 is enabled to stand on the ground, and therefore the rapid switching between the moving state and the fixing state of the device is achieved; the upright column 4 comprises a guide rod 401 and a damping piece 402, the upright column 4 is of an L-shaped plate-shaped structure, and a spring is connected below the upright column 4; the guide rod 401 is of a columnar structure, and the guide rod 401 is connected with the upright post 4 in a welding mode; the shock absorbing member 402 is of a columnar structure, and a circular through hole is formed in the shock absorbing member 402; a guide rod 401 is inserted into the circular through hole of the damping member 402, and the damping member 402 is connected with the upright post 4 through a spring; the column 4 is used to support the main body 1 and is connected to a shock absorbing member 402 through a guide bar 401 and a spring so that the column 4 can absorb shock when contacting the ground.

The specific use mode and function of the embodiment are as follows:

in the utility model, when the device is needed to be used, the superimposed sheet is placed on the device by manpower, the contact pad 101 in the main body 1 is used for coating the exposed reinforcing steel bar structure at the periphery of the superimposed sheet, so that the exposed reinforcing steel bar structure of the superimposed sheet is prevented from scratching pedestrians, then the top cover 102 can be clamped in the main body 1 to be matched with the contact pad 101 to coat the reinforcing steel bar of the superimposed sheet, when the side surface of the superimposed sheet is needed to be observed, the rotating piece 202 is rotated, the screw rod and the connecting piece 201 are meshed and rotated, the mounting frame 103 is moved upwards to expose the side surface of the superimposed sheet, the supporting plate 2 is connected with the main body 1, so that the whole structure is more stable, the whole installation process of the device is simpler by the structure, thereby being convenient for workers to move and accommodate the device, the wheels of the mounting base 3 can be pushed by manpower, so that the device can be moved conveniently, when the device needs to be fixed, the supporting part 303 of the device needs to be stepped downwards by manpower to enable the supporting part 303 to be attached to the ground, then the main body 1 slides towards the right side, the main body 1 moves to the upper part of the supporting part 303, and the supporting part 303 supports the main body 1 to stand on the ground, so that the rapid conversion between the moving state and the fixing state of the device is realized.

The embodiments of the present invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the utility model in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiment was chosen and described in order to best explain the principles of the utility model and the practical application, and to enable others of ordinary skill in the art to understand the utility model for various embodiments with various modifications as are suited to the particular use contemplated.

Claims

1. The utility model provides a superimposed sheet show shelf of assembled which characterized in that: comprises a main body (1), a supporting plate (2), a mounting seat (3) and an upright post (4); the main body (1) is of a rectangular plate-shaped structure, and an included angle of 60 degrees is formed between the upper part of the main body (1) and the horizontal plane; the supporting plate (2) is arranged below the main body (1), and the supporting plate (2) is inserted into a rectangular groove at the rear end of the main body (1); the mounting seat (3) is mounted below the main body (1), the rectangular bulge of the main body (1) is inserted into the through hole of the mounting seat (3), and the rectangular bulge of the mounting seat (3) is inserted into the mounting groove of the main body (1); the stand column (4) is installed on the left side and the right side of the main body (1), and the stand column (4) is connected with the main body (1) in a welding mode.

2. The fabricated composite display stand of claim 1, wherein: the main body (1) comprises a contact pad (101), a top cover (102) and a mounting frame (103), a T-shaped through hole is formed in the main body (1), and a rectangular groove is formed in the rear end of the main body (1); a rectangular bulge is arranged below the main body (1), and two plate-shaped bulges are arranged on the outer side of the rectangular bulge of the main body (1); an installation groove is formed between the two plate-shaped bulges of the main body (1), and round bulges are arranged at the front end and the rear end of the rectangular bulge of the main body (1); the contact pad (101) is of a plate-shaped structure, and a rectangular through hole is formed in the contact pad (101); the contact pad (101) is arranged in a T-shaped groove of the main body (1), and the contact pad (101) is made of flexible materials; the top cover (102) is of a T-shaped structure, a rectangular through hole is formed in the top cover (102), and the rear end of the top cover (102) is inserted into the T-shaped through hole of the main body (1); the mounting rack (103) is of a rectangular plate-shaped structure, and a through hole is formed in the mounting rack (103); the rear end of the mounting rack (103) is provided with a cross-shaped groove, and the bottom of the cross-shaped groove of the mounting rack (103) is provided with a screw hole.

3. The fabricated composite display stand of claim 1, wherein: the supporting plate (2) comprises a connecting piece (201) and a rotating piece (202), the supporting plate (2) is of a plate-shaped structure, and rectangular bulges are arranged on the left side and the right side of the supporting plate (2); a rectangular bulge is arranged at the rear end of the supporting plate (2), and a circular through hole is formed in the rectangular bulge of the supporting plate (2); the top of the round through hole of the supporting plate (2) is provided with a T-shaped groove, and the supporting plate (2) is connected with the main body (1) through a screw; the connecting piece (201) is of a columnar structure, and the front end of the connecting piece (201) is provided with a cross-shaped plate-shaped bulge; the cross-shaped plate-shaped protrusion of the connecting piece (201) is inserted into the cross-shaped groove of the mounting frame (103), the connecting piece (201) is connected with the mounting frame (103) through a screw, and the connecting piece (201) is inserted into the circular through hole of the supporting plate (2); a T-shaped groove is formed in the connecting piece (201), and the top end of the T-shaped groove of the connecting piece (201) is provided with a thread; the rotating piece (202) is of a columnar structure, a T-shaped bulge is arranged at the front end of the rotating piece (202), and the T-shaped bulge of the rotating piece (202) is inserted into the T-shaped groove of the supporting plate (2); a circular counter bore is formed in the rotating part (202), and a screw rod is welded in the counter bore of the rotating part (202); a screw rod of the rotating piece (202) is meshed with the thread of the connecting piece (201), and a circular limiting plate is arranged at the front end of the screw rod of the rotating piece (202); four columnar handles are arranged on the outer side of the rotating piece (202).

4. The fabricated composite display stand of claim 1, wherein: the mounting seat (3) comprises a sliding groove (301), a clamping groove (302) and a supporting piece (303), the mounting seat (3) is of a rectangular hollow structure, and a through hole is formed above the mounting seat (3); two rectangular through holes are formed in the mounting base (3), and two rollers are mounted in the through holes of the mounting base (3) through rotating shafts; two plate-shaped structures are arranged inside the mounting seat (3), and a sliding groove (301) is formed above the plate-shaped structures of the mounting seat (3); the sliding groove (301) is of a round-corner rectangular structure, and a circular bulge of the main body (1) is inserted into the sliding groove (301); a clamping groove (302) is formed in the mounting seat (3), and the clamping groove (302) is of a T-shaped structure; the support piece (303) is of a plate-shaped structure, and a T-shaped bulge is arranged above the support piece (303); the T-shaped bulge of the support piece (303) is inserted into the clamping groove (302), and the support piece (303) is connected with the mounting seat (3) through a spring.

5. The fabricated composite display stand of claim 1, wherein: the upright post (4) comprises a guide rod (401) and a damping piece (402), the upright post (4) is of an L-shaped plate-shaped structure, and a spring is connected below the upright post (4); the guide rod (401) is of a columnar structure, and the guide rod (401) is connected with the upright post (4) in a welding mode; the shock absorption piece (402) is of a columnar structure, and a circular through hole is formed in the shock absorption piece (402); a guide rod (401) is inserted into a circular through hole of the damping piece (402), and the damping piece (402) is connected with the upright post (4) through a spring.