Movable folding photovoltaic car shed

Abstract

The utility model discloses a movable folding photovoltaic car shed which comprises a movable lifting type door-shaped frame, a movable folding type photovoltaic car shed body, a movable folding type photovoltaic car shed body and a movable folding type photovoltaic car shed body. The fixing frames are hinged to one another; the two tail ends of any shear fork type telescopic mechanism are connected with the lifting door-shaped frame through the brake mechanisms; the braking mechanism comprises a limiting gear fixedly installed at the tail end of the scissor-fork type telescopic mechanism, a steel braking piece rotationally installed on the lifting type door-shaped frame and an electromagnet arranged at an interval with the steel braking piece, and the side, facing the limiting gear, of the top of the steel braking piece is bent and connected with the limiting gear in a meshed mode. The lifting type door-shaped frame is connected with the steel braking piece through a corresponding torsional spring, and the torsional spring enables the steel braking piece to have the movement tendency of rotating and resetting towards the limiting gear. And a plurality of damping mechanisms. According to the utility model, an automatic braking and locking function can be realized at any time along with the spreading extension, the retraction of the photovoltaic shed is effectively prevented, and the retraction can be flexibly and quickly realized.

Description

Technical Field

[0001] The utility model relates to a photovoltaic carport, in particular to a mobile and foldable photovoltaic carport. Background Art

[0002] Photovoltaic carport is a building structure that combines solar power generation and carport functions. It is mainly composed of carport brackets and photovoltaic modules installed on the top of the carport brackets. Its characteristic is that the top surface of the carport is replaced by photovoltaic modules, which can not only realize photovoltaic power generation, but also play the role of sunshade and rain protection. This structure can effectively utilize solar energy resources, improve energy utilization efficiency, and reduce pollution to the environment. It is a typical green building structure.

[0003] In order to ensure that there are enough photovoltaic modules exposed, a large enough carport bracket is required for support. However, in the face of typhoon weather or strong winds, the photovoltaic carport needs to be reinforced or stored to avoid damage caused by bad weather. The flexibility of reinforced or fixed photovoltaic carports is worse than that of storage types, but the stability of mobile photovoltaic carports is worse than that of fixed types. Therefore, the folding and storage type carport mainly installs brake universal wheels at the bottom. While using the universal wheels for rapid storage and spreading, the braking characteristics of the brake universal wheels are used to lock the photovoltaic carport to ensure stability. However, manual locking of the universal wheels requires fixing them one by one, which is cumbersome. In addition, the photovoltaic carport can not only be spread out but also retracted. During the stretching process, personnel need to apply force to prevent it from retracting, which is labor-intensive.

[0004] Therefore, on the basis of ensuring stable support for photovoltaic components, the research purpose of the present utility model is to design a mobile folding photovoltaic carport that can have automatic braking and locking effect at all times as it is laid and stretched, effectively preventing the photovoltaic carport from retracting, and can flexibly and quickly retract. Utility Model Content

[0005] In view of the technical problems existing in the above-mentioned prior art, the utility model provides a mobile folding photovoltaic carport, and the vibration-damping mobile folding photovoltaic carport can effectively solve the technical problems existing in the above-mentioned prior art.

[0006] The technical solution of the utility model is:

[0007] A mobile folding photovoltaic carport, comprising:

[0008] The mobile storage rack comprises two groups of lifting gantry frames, wherein the two lifting gantry frames of the same group are arranged at intervals and the tops thereof are connected and fixed by corresponding cross bars, and the two lifting gantry frames of different groups on the same side are arranged at intervals and the tops thereof are connected by corresponding scissor-type telescopic mechanisms, and the two ends of the scissor-type telescopic mechanisms are connected to the corresponding lifting gantry frames by corresponding hinge mechanisms;

[0009] A plurality of fixed frames for mounting photovoltaic modules, which are arranged side by side in a symmetrical manner, and between two adjacent fixed frames, the fixed frames located on the two outer sides and the corresponding mobile storage racks are connected by corresponding hinge mechanisms, and the fixed frames located on the two outer sides are installed on the corresponding mobile storage racks for vertical movement, and the fixed frames and the corresponding scissor-type telescopic mechanisms are hinged by corresponding hinge mechanisms;

[0010] At least one set of braking mechanisms, the two ends of any one of the scissor-type telescopic mechanisms are connected to the corresponding lifting gantry through the braking mechanisms, the braking mechanisms comprising a limit gear fixedly mounted on the end of the scissor-type telescopic mechanism, a steel brake rotatably mounted on the lifting gantry, and an electromagnet spaced from the steel brake, the electromagnet and the limit gear being respectively arranged on both sides of the steel brake, the steel brake being inclinedly arranged facing one side of the limit gear and having its top meshingly connected with the limit gear, the lifting gantry and the steel brake being connected through corresponding torsion springs, the torsion springs causing the steel brake to have a movement tendency to rotate and reset toward the limit gear;

[0011] A plurality of vibration-damping mechanisms, each comprising a hollow vibration-damping base fixedly mounted on the side of the fixed frame for supporting and installing the hinge mechanism, wherein a plurality of corresponding first damping particles and at least one vibration-damping elastic member are filled in the accommodating cavity of the hollow vibration-damping base.

[0012] The lifting gantry is provided with a shaft for installing the torsion spring and the steel brake, the steel brake rotates on the shaft, the torsion spring is sleeved on the outside of the shaft and the two ends are respectively fixed to the steel brake and the lifting gantry.

[0013] The electromagnet is electrically connected to a driving button for controlling the energization of the electromagnet, and the driving button is installed on the lower side of the corresponding lifting gantry.

[0014] The fixed frame is a rectangular structure consisting of a group of first side strips and a group of second side strips staggered and connected end to end; the fixed frame is divided into a plurality of side-by-side receiving frame grooves by corresponding partition plates arranged parallel to the first side strips, and the corresponding photovoltaic components are detachably fixedly installed in the receiving frame grooves.

[0015] The lifting gantry frame comprises a gantry frame body at the bottom and a lifting rod installed on the top of the gantry frame body which can be lifted up and down, the fixed frames on the two outer sides are installed on the lifting rods, and corresponding movable universal wheels are respectively installed at the bottom of the gantry frame body.

[0016] The accommodating cavity of the hollow vibration-damping base is filled with a plurality of corresponding first damping particles, and the upper surface of the first damping particles is downwardly connected to a pressing plate for compacting the first damping particles through the vibration-damping elastic member, and the upper end of the vibration-damping elastic member is connected to the upper end surface of the accommodating cavity of the hollow vibration-damping base.

[0017] The hinge mechanism includes a group of connecting plates respectively fixed to two adjacent fixed frames, corresponding bushings are fixed to the connecting plates at intervals, the bushings on the two connecting plates are staggered and rotatably connected to the same rotating shaft, and the accommodating cavity of the connecting plate is filled with a plurality of corresponding second damping particles.

[0018] The scissor-type telescopic mechanism comprises a plurality of fork arms arranged side by side in a transverse manner, two adjacent fork arms are symmetrically arranged and connected by corresponding hinge mechanisms, and the fork arms located on the two outer sides are hinged to the corresponding lifting gantry through corresponding hinge mechanisms.

[0019] The hinge mechanism of the scissor-type telescopic mechanism located at the lower hinge point is fixedly installed downward with a steel pipe column for strengthening the stable support, and the lower ends of the steel pipe column are respectively installed with corresponding movable universal wheels.

[0020] Advantages of the utility model:

[0021] 1) The utility model utilizes a lifting gantry frame connected by a scissor-type telescopic mechanism and a fixed frame connected by a hinge mechanism to cooperate with each other to install photovoltaic modules, so that the photovoltaic modules can be flexibly and conveniently stored and spread out, which is suitable for facing typhoon weather or strong wind weather, and effectively increases the scope of application of photovoltaic carports.

[0022] 2) In the utility model, the two ends of any one of the scissors-type telescopic mechanisms are connected to the corresponding lifting gantry through a set of braking mechanisms, the braking mechanism comprises a limit gear fixedly mounted on the end of the scissors-type telescopic mechanism, and a steel brake member rotatably mounted on the lifting gantry, the steel brake member is inclined toward one side of the limit gear and its top is meshed with the limit gear, the lifting gantry and the steel brake member are connected through corresponding torsion springs, the torsion springs enable the steel brake member to have a movement tendency to rotate and reset toward the limit gear. By utilizing the interaction between the mutually meshing limit gear and the steel brake part and cooperating with the inclined setting of the steel brake part to achieve a unidirectional limiting effect on the rotation of the limit gear, the photovoltaic carport can only be extended in one direction, effectively avoiding retraction; when the photovoltaic carport needs to be retracted, the electromagnet is energized to adsorb the steel brake part, and the steel brake part rotates to one side of the electromagnet, and the torsion spring is stretched, so that the limit gear is disengaged from the steel brake part, and then the photovoltaic carport can be quickly pushed. When the photovoltaic carport is stored, the electromagnet is powered off, and the steel brake part is reset under the elastic force of the torsion spring and re-engaged with the limit gear, thereby forming a limit lock for the photovoltaic carport.

[0023] 3) The utility model realizes the braking lock of the photovoltaic carport through the braking mechanism, but because the setting of the limit gear and the steel brake part will greatly increase the vibration during the spreading process of the photovoltaic carport, the vibration will have an adverse effect on the photovoltaic components installed on the photovoltaic carport. Therefore, a corresponding vibration reduction mechanism is set between the scissor-type telescopic mechanism and the fixed frame where the braking mechanism is installed. The vibration reduction mechanism includes a hollow vibration reduction base fixed on the side of the fixed frame for supporting the installation of the hinge mechanism. The accommodating cavity of the hollow vibration reduction base is filled with a plurality of corresponding first damping particles, and the upper surface of the first damping particle is connected downwardly to a pressing plate for compacting the first damping particle through a vibration reduction elastic member, and the upper end of the vibration reduction elastic member is connected to the upper end surface of the accommodating cavity of the hollow vibration reduction base. Under the dual effects of the mutual friction energy consumption between the first damping particles and the elastic buffering of the vibration reduction elastic member, a vibration reduction zone can be formed at the connection between the fixed frame and the scissor-type telescopic mechanism, thereby reducing the adverse effects of the vibration caused by the braking mechanism on the photovoltaic components. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the structure of the utility model when folded and stored.

[0025] Figure 2 It is a schematic diagram of the structure of the utility model when it is spread out.

[0026] Figure 3 It is a structural schematic diagram of the braking mechanism of the utility model.

[0027] Figure 4 It is a structural schematic diagram of the electromagnet of the brake mechanism of the utility model when it is energized.

[0028] Figure 5 It is a cutaway schematic diagram of the vibration reduction mechanism of the utility model.

[0029] In the accompanying drawings: a mobile storage rack 1, a lifting gantry 101, a scissor-type telescopic mechanism 102, a cross bar 103, a fixed frame 2, a first side strip 201, a second side strip 202, a partition plate 203, a hinge mechanism 3, a connecting piece 301, a photovoltaic module 4, a vibration reduction mechanism 5, a hollow vibration reduction base 501, a first damping particle 502, a vibration reduction elastic member 503, a pressure plate 504, a braking mechanism 6, a limit gear 601, a steel brake member 602, an electromagnet 603, a torsion spring 604, a mobile universal wheel 7, and a steel pipe column 8. DETAILED DESCRIPTION

[0030] In order to facilitate understanding by those skilled in the art, the structure of the present invention is further described in detail with reference to the accompanying drawings:

[0031] refer to Figure 1-5 , a mobile folding photovoltaic carport, comprising:

[0032] The mobile storage rack 1 comprises two groups of lifting gantry frames 101, wherein the two lifting gantry frames 101 of the same group are arranged at intervals and the tops thereof are connected and fixed by corresponding cross bars 103, and the two lifting gantry frames 101 of different groups on the same side are arranged at intervals and the tops thereof are connected by corresponding scissor-type telescopic mechanisms 102, and the two ends of the scissor-type telescopic mechanisms 102 are connected to the corresponding lifting gantry frames 101 by corresponding hinge mechanisms;

[0033] A plurality of fixed frames 2 are used to install photovoltaic modules, which are arranged side by side in a horizontal direction and are symmetrically arranged between two adjacent fixed frames 2. The adjacent fixed frames 2 and the fixed frames 2 located on the two outer sides are connected to the corresponding mobile storage racks 1 through corresponding hinge mechanisms 3, and the fixed frames located on the two outer sides are moved up and down and installed on the corresponding mobile storage racks 1. The fixed frames 2 and the corresponding scissor-type telescopic mechanisms 102 are hinged through corresponding hinge mechanisms;

[0034] At least one set of brake mechanisms 6, the two ends of any scissor-type telescopic mechanism 102 are connected to the corresponding lifting gantry 101 through the brake mechanisms 6, the brake mechanisms 6 include a limit gear 601 fixedly mounted on the end of the scissor-type telescopic mechanism 102, a steel brake 602 rotatably mounted on the lifting gantry 101, and an electromagnet 603 spaced apart from the steel brake 602, the electromagnet 603 and the limit gear 601 are respectively arranged on both sides of the steel brake 602, the steel brake 602 is inclinedly arranged facing one side of the limit gear 601 and its top is meshedly connected with the limit gear 601, the lifting gantry 101 and the steel brake 602 are connected through corresponding torsion springs 604, and the torsion springs 604 make the steel brake 602 have a movement tendency of rotating and resetting toward the limit gear 601;

[0035] A plurality of vibration-damping mechanisms 5 , each comprising a hollow vibration-damping base 501 fixedly mounted on the side of the fixed frame 2 for supporting and installing the hinge mechanism, wherein the accommodating cavity of the hollow vibration-damping base 501 is filled with a plurality of corresponding first damping particles 502 and at least one vibration-damping elastic member 503 .

[0036] The utility model utilizes a lifting gantry 101 connected by a scissor-type telescopic mechanism 102 and a fixed frame 2 connected by a hinge mechanism 3 to cooperate with each other to install photovoltaic components 4, so that the photovoltaic components 4 can be flexibly and conveniently stored and spread out, which is suitable for facing typhoon weather or strong wind weather, and effectively increases the application range of photovoltaic carports.

[0037] The lifting gantry 101 is provided with a shaft for installing the torsion spring 604 and the steel brake 602. The steel brake 602 rotates on the shaft. The torsion spring 604 is sleeved on the outside of the shaft and its two ends are respectively fixed to the steel brake 602 and the lifting gantry 101.

[0038] The electromagnet 603 is electrically connected to a driving button for controlling the power supply to the electromagnet 603 , and the driving button is installed on the lower side of the corresponding lifting gantry 101 .

[0039] The utility model connects the two ends of any scissor-type telescopic mechanism 102 with the corresponding lifting gantry 101 through a set of brake mechanisms 6, and the brake mechanisms 6 include a limit gear 601 fixedly mounted on the end of the scissor-type telescopic mechanism 102, and a steel brake member 602 rotatably mounted on the lifting gantry 101. The steel brake member 602 is tilted toward one side of the limit gear 601 and its top is meshed with the limit gear 601. The tilted setting of the steel brake member 602 has a one-way limit effect on the rotation of the limit gear 601, so that the photovoltaic carport can only be spread in one direction, effectively avoiding retraction; and the lifting gantry 101 and the steel brake member are connected to each other. 602 are connected by corresponding torsion springs 604, and the torsion springs 604 make the steel brake 602 have a movement tendency to rotate and reset toward the limit gear 601. When the photovoltaic carport needs to be retracted, the electromagnet 603 is energized to adsorb the steel brake 602, and the steel brake 602 rotates to one side of the electromagnet 603, and the torsion spring 604 is stretched, so that the limit gear 601 is separated from the connection of the steel brake 602, and then the photovoltaic carport is quickly pushed to be folded and stored. When the photovoltaic carport is stored, the electromagnet 603 is powered off, and the steel brake 602 is reset under the elastic force of the torsion spring 604 and re-engaged with the limit gear 601, thereby forming a limit lock for the photovoltaic carport.

[0040] The fixed frame 2 is a rectangular structure consisting of a group of first side strips 201 and a group of second side strips 202 connected end to end in an interlaced manner; the fixed frame 2 is divided into a plurality of side-by-side receiving frame grooves by corresponding partition plates 203 arranged parallel to the first side strips 201, and the corresponding photovoltaic components 4 are detachably fixedly installed in the receiving frame grooves.

[0041] The lifting gantry 101 comprises a gantry body at the bottom and a lifting rod installed on the top of the gantry body which can be lifted up and down, the fixed frames 2 on the two outer sides are installed on the lifting rods, and corresponding movable universal wheels 7 are respectively installed at the bottom of the gantry body.

[0042] The accommodating cavity of the hollow vibration-damping base 501 is filled with a plurality of corresponding first damping particles 502, and the upper surface of the first damping particle 502 is downwardly connected to a pressing plate 504 for compacting the first damping particle 502 through the vibration-damping elastic member 503, and the upper end of the vibration-damping elastic member 503 is connected to the upper end surface of the accommodating cavity of the hollow vibration-damping base 501.

[0043] The utility model realizes the braking locking of the photovoltaic carport through the braking mechanism 6, but the setting of the limit gear 601 and the steel brake part 602 will greatly increase the vibration during the spreading process of the photovoltaic carport, and the vibration will have an adverse effect on the photovoltaic components 4 installed on the photovoltaic carport. Therefore, a corresponding vibration damping mechanism 5 is arranged between the scissors-type telescopic mechanism 102 on which the braking mechanism 6 is installed and the fixed frame 2. The vibration damping mechanism 5 includes a hollow vibration damping base 501 fixedly mounted on the side of the fixed frame 2 for supporting the installation of the hinge mechanism, and the accommodating cavity of the hollow vibration damping base 501 is filled with a plurality of corresponding first damping particles 502, and the upper surface of the first damping particle 502 is downwardly connected to a pressure plate for compacting the first damping particle 502 through a vibration damping elastic member 503, and the upper end of the vibration damping elastic member 503 is connected to the upper end surface of the accommodating cavity of the hollow vibration damping base 501. Through the dual effects of mutual friction energy dissipation between the first damping particles 502 and elastic buffering of the vibration-damping elastic member 503, a vibration-damping zone can be formed at the connection between the fixed frame 2 and the scissor-type telescopic mechanism 102, thereby reducing the adverse effects of the vibration caused by the braking mechanism 6 on the photovoltaic assembly 4.

[0044] The hinge mechanism 3 includes a group of connecting plates 301 respectively fixed to two adjacent fixed frames 2, and corresponding shaft sleeves are fixed to the connecting plates 301 at intervals. The shaft sleeves on the two connecting plates 301 are staggered and rotatably connected to the same rotating shaft, and the accommodating cavity of the connecting plate 301 is filled with a plurality of corresponding second damping particles.

[0045] The scissor-type telescopic mechanism 102 comprises a plurality of fork arms arranged side by side in a transverse manner, two adjacent fork arms are symmetrically arranged and connected by corresponding hinge mechanisms, and the fork arms located on the two outer sides are hinged to the corresponding lifting gantry 101 by corresponding hinge mechanisms.

[0046] The hinge mechanism of the scissor-type telescopic mechanism 102 located at the lower hinge point is fixed downward with a steel pipe column 8 for strengthening the stable support, and the lower ends of the steel pipe columns are respectively installed with corresponding movable universal wheels 7. The movable universal wheels 7 can be used to quickly and conveniently move, fold and unfold the photovoltaic carport, and the steel pipe column 8 can enhance the overall stability of the photovoltaic carport.

[0047] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A mobile folding photovoltaic carport, It is characterized in that include: The mobile storage rack (1) comprises two groups of lifting gantry frames (101), wherein the two lifting gantry frames (101) of the same group are arranged at intervals and the tops thereof are connected and fixed by corresponding cross bars (103), and the two lifting gantry frames (101) of different groups on the same side are arranged at intervals and the tops thereof are connected by corresponding scissor-type telescopic mechanisms (102), and the two ends of the scissor-type telescopic mechanisms (102) are connected to the corresponding lifting gantry frames (101) by corresponding hinge mechanisms; A plurality of fixed frames (2) for mounting photovoltaic modules, which are arranged side by side in a horizontal manner and are symmetrically arranged between two adjacent fixed frames (2); the two adjacent fixed frames (2) and the fixed frames (2) located at two outer sides are connected to the corresponding movable storage racks (1) through corresponding hinge mechanisms (3); the fixed frames located at two outer sides are mounted on the corresponding movable storage racks (1) in a manner that they can be moved up and down; and the fixed frames (2) and the corresponding scissor-type telescopic mechanisms (102) are hingedly connected through corresponding hinge mechanisms; At least one set of braking mechanisms (6), wherein the two ends of any scissor-type telescopic mechanism (102) are connected to the corresponding lifting gantry (101) through the braking mechanisms (6), wherein the braking mechanisms (6) comprise a limit gear (601) fixedly mounted on the end of the scissor-type telescopic mechanism (102), a steel braking member (602) rotatably mounted on the lifting gantry (101), and an electromagnet (603) spaced apart from the steel braking member (602), wherein the electromagnet (603) 03) and the limit gear (601) are respectively arranged on both sides of the steel brake (602), the steel brake (602) is inclinedly arranged on one side facing the limit gear (601) and its top is meshed and connected with the limit gear (601), the lifting gantry (101) and the steel brake (602) are connected through corresponding torsion springs (604), and the torsion springs (604) make the steel brake (602) have a movement tendency of rotating and resetting toward the limit gear (601); A plurality of vibration-damping mechanisms (5), each comprising a hollow vibration-damping base (501) fixedly mounted on a side of the fixed frame (2) for supporting and installing the hinge mechanism, wherein a plurality of corresponding first damping particles (502) and at least one vibration-damping elastic member (503) are filled in a receiving cavity of the hollow vibration-damping base (501).

2. A mobile folding photovoltaic carport according to claim 1, It is characterized in that The lifting gantry (101) is provided with a shaft for mounting the torsion spring (604) and the steel brake (602), the steel brake (602) rotates on the shaft, the torsion spring (604) is sleeved on the outer side of the shaft and the two ends are respectively fixed to the steel brake (602) and the lifting gantry (101).

3. A mobile folding photovoltaic carport according to claim 1, It is characterized in that The electromagnet (603) is electrically connected to a driving button for controlling the power supply to the electromagnet (603), and the driving button is installed on the lower side of the corresponding lifting gantry (101).

4. The mobile folding photovoltaic carport according to claim 1, It is characterized in that The fixed frame (2) is a rectangular structure formed by a group of first side strips (201) and a group of second side strips (202) connected end to end in an interlaced manner; the fixed frame (2) is divided into a plurality of side-by-side receiving frame grooves by corresponding partition plates (203) arranged parallel to the first side strips (201), and corresponding photovoltaic modules (4) are detachably and fixedly installed in the receiving frame grooves.

5. The mobile folding photovoltaic carport according to claim 1, It is characterized in that The lifting gantry (101) comprises a gantry frame body at the bottom and a lifting rod installed on the top of the gantry frame body which can be lifted up and down, the fixed frames (2) on the two outer sides are installed on the lifting rods, and corresponding movable universal wheels (7) are respectively installed at the bottom of the gantry frame body.

6. The mobile folding photovoltaic carport according to claim 1, It is characterized in that The accommodating cavity of the hollow vibration-damping base (501) is filled with a plurality of corresponding first damping particles (502), and the upper surface of the first damping particle (502) is connected downwardly to a pressing plate (504) for compacting the first damping particle (502) through the vibration-damping elastic member (503), and the upper end of the vibration-damping elastic member (503) is connected to the upper end surface of the accommodating cavity of the hollow vibration-damping base (501).

7. The mobile folding photovoltaic carport according to claim 1, It is characterized in that The hinge mechanism (3) comprises a group of connecting plates (301) respectively fixed to two adjacent fixed frames (2), corresponding shaft sleeves are fixedly connected to the connecting plates (301) at intervals, the shaft sleeves on the two connecting plates (301) are staggered and rotatably connected to the same rotating shaft, and the accommodating cavity of the connecting plate (301) is filled with a plurality of corresponding second damping particles.

8. The mobile folding photovoltaic carport according to claim 1, It is characterized in that The scissor-type telescopic mechanism (102) comprises a plurality of fork arms arranged side by side in a transverse manner, two adjacent fork arms are symmetrically arranged and connected via corresponding hinge mechanisms, and the fork arms located on the two outer sides are hingedly connected to the corresponding lifting gantry (101) via corresponding hinge mechanisms.

9. The mobile folding photovoltaic carport according to claim 6, It is characterized in that The hinge mechanism of the scissor-type telescopic mechanism (102) located at the lower hinge point is fixedly installed downward with a steel pipe column (8) for strengthening the stable support, and the lower end of the steel pipe column (8) is respectively installed with a corresponding movable universal wheel (7).

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