Intelligent induction adjusting jacking device for building garage

Abstract

The invention relates to the technical field of constructional engineering, and discloses an intelligent induction adjusting top supporting device for a building garage, which comprises a telescopic frame body positioned between a movable bottom supporting unit and a movable back-jacking unit, and the top of the telescopic frame body is connected with the bottom of a back-jacking steel pipe to form an integrated structure. The bottom of the telescopic frame body and the top of the bottom supporting steel pipe are connected to form an integrated structure, a displacement frame which reciprocates along the radial direction of the garage together with the back-jacking steel pipe and the bottom supporting steel pipe is arranged in the telescopic frame body, and all the pressure sensors and the displacement frame are electrically connected with the microprocessor together. And the self-adjusting top supporting state is intelligently adjusted to meet the stress load of each position of the garage top plate, so that the manpower and material resource cost is reduced, and the construction speed is increased.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of building engineering, and in particular to an intelligent induction adjusting roof supporting device for a building garage. BACKGROUND

[0002] In the field of building construction, especially in the construction process of high-rise building groups, an underground garage is built in the high-rise building group, and the underground garage needs to be loaded, driven or constructed on the top plate of the underground garage after construction. Since the design load of the underground garage top plate often cannot meet the requirements of the construction load, it is easy to cause the garage to deform or crack, therefore, the construction personnel often need to support the underground garage top plate.

[0003] The current back roof support is usually based on a support frame, which is generally a steel pipe fastener frame, a disc buckle frame or a wheel buckle frame, etc. The back roof support is supported by the full roof of the support frame. However, the back roof support of the above support frame requires the construction personnel to move the support frame to the bottom of the underground garage top plate by hoisting and transporting, and after moving to the appropriate position, the construction personnel need to fix the top and bottom of the support frame by means of bolts and nuts. The whole process is time-consuming and laborious, the construction speed is slow, and the construction risk is high, which has certain safety hazards.

[0004] Therefore, in order to solve the above technical problems, the Chinese patent document (publication number CN109812051A) discloses a garage roof back supporting frame and its construction method, which is arranged between the garage bottom plate and the garage top plate, and includes a plurality of vertically arranged vertical rods, a plurality of transversely arranged horizontal rods, and a plurality of steel beams arranged perpendicularly to the vertical rods and the horizontal rods. The vertical rods and the horizontal rods are detachably connected by connecting pieces; the top of each vertical rod is provided with a U-shaped support, and the bottom of each vertical rod is provided with a cushion layer; a keel is arranged between the U-shaped support and the garage top plate. The construction steps are as follows: measurement and line laying, cushion layer laying, vertical rod and horizontal rod erection, beam bottom and top plate support frame connection, U-shaped support installation, groove keel laying, and U-shaped support height adjustment to a reasonable position.

[0005] Although the above technical solution can solve the problems of the prior art, there are still the following technical problems in the use of the above garage roof back supporting frame: problem one, the back supporting frame in the above technical solution is installed by the construction process of measurement and line laying, cushion layer laying, vertical rod and horizontal rod erection, beam bottom and top plate support frame connection, U-shaped support installation, groove keel laying, and U-shaped support height adjustment to a reasonable position. Although it does not need to be installed mechanically by hoisting, it needs to be installed by the construction personnel according to the above construction process, which prolongs the whole construction period and slows down the construction speed, and the construction still has safety hazards.

[0006] Problem two, based on the above problem one, since the back support frame in the above technical solution determines the support frame installation position in the measurement pay-off mode, therefore, during the stacking, traveling or construction process on the garage roof, the construction personnel need to regularly survey whether the load of the garage roof meets the construction load requirement on the garage roof, when the load of the garage roof at a certain position does not meet the construction load requirement, the construction personnel need to re-adjust the spacing between the vertical rods and the horizontal rods in the support frame, so that multiple vertical rods jointly support the position, resulting in the extension of the whole cycle, wasting the labor cost, and when adjusting the spacing between the vertical rods and the horizontal rods in the support frame, repeatedly disassembling and assembling are also needed, wasting manpower and material resources, the construction speed is slow, the construction is not convenient, the construction effect is not good, and the overall stress system is uncontrollable. SUMMARY

[0007] The present application aims to provide an intelligent induction adjusting roof supporting device for a building garage, which can intelligently induce the stress load state of the garage roof, and intelligently adjust the roof supporting state on the basis of the garage roof stress load induction information to meet the stress load of each position of the garage roof, reduce the labor and material cost, and improve the construction speed.

[0008] To achieve the above-mentioned purpose, the present application adopts the following technical solutions:

[0009] 1) An intelligent induction adjusting roof supporting device for a building garage, comprising:

[0010] A movable bottom supporting unit configured to have a lower movable slide rail fixed at the bottom of the garage, the upper surface of the lower movable slide rail having a plurality of bottom supporting steel pipes arranged along the axial direction of the garage, each bottom supporting steel pipe reciprocating along the radial direction of the garage;

[0011] A movable back roof unit configured to have an upper movable slide rail fixed at the top of the garage, the upper movable slide rail having a plurality of pressure sensors arranged on the lower surface of the garage roof and used for detecting the load of the garage roof, the upper surface of the upper movable slide rail having a plurality of back roof steel pipes arranged along the axial direction of the garage, each back roof steel pipe reciprocating along the radial direction of the garage;

[0012] A telescopic frame unit configured to have a telescopic frame between the movable bottom supporting unit and the movable back roof unit, the top of the telescopic frame being connected with the bottom of the back roof steel pipe to form an integrated structure, the bottom of the telescopic frame being connected with the top of the bottom supporting steel pipe to form an integrated structure, the telescopic frame having a displacement frame reciprocating along the radial direction of the garage together with the back roof steel pipe and the bottom supporting steel pipe, and further comprising a microprocessor, all the pressure sensors and the displacement frame being electrically connected with the microprocessor.

[0013] The height of the telescopic frame unit is limited by the mobile bottom supporting unit and the mobile back-up unit, so that the telescopic frame unit can connect the mobile bottom supporting unit and the mobile back-up unit to form back-up support for the garage roof, so as to ensure that the underground garage roof meets the construction load and reduce the deformation of the underground garage roof. Meanwhile, the upper mobile sliding rail of the mobile back-up unit is fixed on the top of the garage in a manner that the top of the telescopic frame unit is connected to the top of the garage, and the lower mobile sliding rail of the mobile bottom supporting unit is fixed on the bottom of the garage in a manner that the bottom of the telescopic frame unit is connected to the bottom of the garage.

[0014] After the installation and fixation of the mobile back-up unit, the telescopic frame unit and the mobile bottom supporting unit are completed, the overall structure of the telescopic frame unit supports the garage roof. During the back-up support of the garage roof by the telescopic frame unit, the several pressure sensors in the upper mobile sliding rail are in contact with the garage roof and detect the load information of each position of the garage roof in real time. All the pressure sensors send the real-time detected load information to the microprocessor.

[0015] When the load information detected by each pressure sensor in a certain area of the garage roof is higher than the preset value in the microprocessor, it is judged that the load at the position of the garage roof where the pressure sensor is located exceeds the requirement of the construction load. The microprocessor then issues an instruction to the telescopic frame unit to start the displacement frame corresponding to the displacement frame part of each pressure sensor in a certain area, so that the displacement frame parts are close to each other and drive the back-up steel pipes and the bottom supporting steel pipes connected thereto to be close to each other synchronously, so that the back-up steel pipes and the bottom supporting steel pipes work together to support the garage roof in a certain area after being close to each other, thereby realizing the common back-up of the garage roof to meet the construction load. Therefore, the present application can intelligently sense the stress load state of the garage roof, and intelligently adjust the back-up state based on the stress load sensing information of the garage roof to meet the stress load of each position of the garage roof, thereby reducing the cost of manpower and material resources.

[0016] 2) The intelligent sensing and adjusting back-up device for a building garage according to 1), wherein:

[0017] The telescopic frame body includes several start-up steel pipes arranged uniformly along the height direction and parallel to each other, several connection steel pipes parallel to each other are uniformly arranged along the axis direction between adjacent start-up steel pipes, the axes of all the connection steel pipes are perpendicular to the axes of the start-up steel pipes, respectively, both ends of the connection steel pipes are welded between adjacent start-up steel pipes to form a single-sided driving net together, the top of the single-sided driving net is welded with the back-up steel pipe, and the bottom of the single-sided driving net is welded with the bottom supporting steel pipe, so as to drive the displacement frame to move back and forth along the radial direction of the garage with the single-sided driving net as the support surface.

[0018] The above technical scheme is characterized in that the starting steel pipes are arranged in parallel along the height direction, and the connecting steel pipes are arranged in parallel along the axis direction of the starting steel pipes, thereby forming a vertical vertical net, and the two ends of each connecting steel pipe in the vertical net are welded to the adjacent starting steel pipes to form a single-face driving net.

[0019] 3) The intelligent induction adjusting roof supporting device for the building garage according to 2), wherein:

[0020] The displacement frame comprises a plurality of roof supporting surfaces arranged along the height direction of the garage and reciprocally moving along the radial direction, and the position of each roof supporting surface corresponds to the position of the roof returning steel pipe, so that the top of all the roof supporting surfaces is welded to the roof returning steel pipe, and the position of each roof supporting surface corresponds to the position of the roof supporting steel pipe, so that the bottom of all the roof supporting surfaces is welded to the roof supporting steel pipe.

[0021] The above technical scheme is characterized in that the roof supporting surfaces are arranged along the height direction of the garage and reciprocally moving along the radial direction to form the displacement frame, the position of each roof supporting surface corresponds to the position of the roof returning steel pipe, and the top of all the roof supporting surfaces is welded to the roof returning steel pipe, and the position of each roof supporting surface corresponds to the position of the roof supporting steel pipe, and the bottom of all the roof supporting surfaces is welded to the roof supporting steel pipe, and the roof returning steel pipe is arranged on the upper surface of the upper moving slide and moves along the radial direction of the garage, and the roof supporting steel pipe is arranged on the upper surface of the lower moving slide and also moves along the radial direction of the garage, so that the roof returning steel pipe and the roof supporting steel pipe form an integrated structure with the top and bottom of all the roof supporting surfaces, and when the roof returning steel pipe and the roof supporting steel pipe move along the radial direction of the garage, all the roof supporting surfaces move along the radial direction of the garage.

[0022] 4) The intelligent induction adjusting roof supporting device for the building garage according to 3), wherein:

[0023] Each roof supporting surface comprises a plurality of moving steel pipes arranged along the radial direction of the garage, all the moving steel pipes are parallel to the starting steel pipe, and a plurality of retractable retracting pipes are arranged on both sides of the moving steel pipe along the axis direction, the ends of all the retracting pipes on the same side of the moving steel pipe are rotatably connected to the adjacent moving steel pipe or the starting steel pipe, and the starting steel pipe is provided with a driving member for driving the retracting pipe to extend or retract along the axis direction.

[0024] With the technical scheme, the top supporting surfaces of the displacement frame are formed by the plurality of moving steel pipes arranged along the radial direction of the garage, the positions of the top supporting surfaces correspond to the positions of the starting steel pipes, and all the moving steel pipes are parallel to the starting steel pipes. The two sides of the moving steel pipes are connected to the plurality of retractable pipes arranged along the axial direction of the moving steel pipes, the adjacent moving steel pipes are connected to each other to form the telescopic horizontal surfaces, the driving members are arranged in the starting steel pipes to drive the extension or retraction of all the retractable pipes, all the driving members simultaneously drive all the retractable pipes on the telescopic horizontal surfaces, all the telescopic horizontal surfaces move towards or away from the one-way driving net, the overall displacement frame adjusts the top supporting state, the stress load of each position of the garage roof is met, and the labor and material costs are reduced.

[0025] 5) The intelligent induction adjusting top supporting device for the building garage according to 4), wherein:

[0026] The driving member includes a servo motor electrically connected to the microprocessor and a starting lead screw penetrating the starting steel pipe, the servo motor is arranged on the fixed plate between the upper moving slide rail and the lower moving slide rail, the servo motor has an output shaft extending towards the starting steel pipe, the free end of the output shaft is coaxially fixedly connected to the starting lead screw, the starting lead screw is uniformly arranged with a plurality of starting bevel gears along the axial direction of the starting lead screw, the starting lead screw is drivingly connected to the linkage member for driving the adjacent moving steel pipes to move towards or away from each other through the starting bevel gears close to the output shaft, the position of each starting bevel gear arranged along the axial direction of the starting lead screw corresponds to the position of the retractable pipe, and each starting bevel gear is drivingly connected to the corresponding retractable pipe through the transmission structure.

[0027] With the technical scheme, the top supporting surfaces of the displacement frame are formed by the plurality of moving steel pipes arranged along the radial direction of the garage, the positions of the top supporting surfaces correspond to the positions of the starting steel pipes, and all the moving steel pipes are parallel to the starting steel pipes. The two sides of the moving steel pipes are connected to the plurality of retractable pipes arranged along the axial direction of the moving steel pipes, the adjacent moving steel pipes are connected to each other to form the telescopic horizontal surfaces, the driving members are arranged in the starting steel pipes to drive the extension or retraction of all the retractable pipes, all the driving members simultaneously drive all the retractable pipes on the telescopic horizontal surfaces, all the telescopic horizontal surfaces move towards or away from the one-way driving net, the overall displacement frame adjusts the top supporting state, the stress load of each position of the garage roof is met, and the labor and material costs are reduced.

[0028] 6) The intelligent induction adjusting top supporting device for the building garage according to 5), wherein:

[0029] The transmission structure comprises a driving screw rod penetrating through the moving steel pipe, a plurality of transmission bevel gears are uniformly distributed along the axial direction of the driving screw rod, each transmission bevel gear is meshed with a rotating bevel gear, the rotating bevel gear is coaxially fixedly connected with the retraction pipe, and the other end of the retraction pipe is fixed on the adjacent moving steel pipe.

[0030] In the above technical solution, when the driving screw rod rotates, all the transmission bevel gears are synchronously driven to rotate, the transmission bevel gears drive the rotating bevel gears meshed therewith to rotate, and the rotating bevel gears drive the retraction pipe to rotate in the process of rotating. Since the retraction pipe can be elongated or retracted in the process of rotating, the retraction pipe can drive the adjacent moving steel pipes to move close to or away from each other.

[0031] 7) The intelligent induction adjusting and supporting device for the building garage according to 6), wherein:

[0032] The retraction pipe comprises an embedded screw rod, the end of the embedded screw rod is coaxially connected with the transmission bevel gear, a nut sleeve is sleeved on the embedded screw rod along the axial direction of the embedded screw rod, the end of the embedded screw rod is provided with a clamping block limiting the nut sleeve, the outer surface of the nut sleeve is fixedly provided with a moving cylinder, the nut sleeve is located in the moving cylinder and drives the moving cylinder to reciprocate along the axial direction, and the end of the moving cylinder away from the embedded screw rod is fixed on the moving steel pipe.

[0033] In the above technical solution, the transmission bevel gear drives the embedded screw rod to rotate in the process of rotating, the nut sleeve sleeved on the embedded screw rod moves along the axial direction of the embedded screw rod in the process of rotating the embedded screw rod, the nut sleeve synchronously drives the moving cylinder to reciprocate along the axial direction in the process of moving the nut sleeve along the axial direction of the embedded screw rod, the nut sleeve drives the moving cylinder to gradually move away from the embedded screw rod when the nut sleeve moves to the position of the clamping block along the axial direction of the embedded screw rod, and the clamping block limits the moving position of the nut sleeve to prevent the nut sleeve from being separated from the embedded screw rod in the process of moving along the axial direction of the embedded screw rod. The embedded screw rod and the nut sleeve are used to realize the elongation of the whole retraction pipe by gradually moving the moving cylinder away from the embedded screw rod, and vice versa.

[0034] 8) The intelligent induction adjusting and supporting device for the building garage according to 5), wherein:

[0035] The linkage comprises a driving bevel gear coaxially fixed with the end of the driving lead screw, the two sides of the driving bevel gear are respectively engaged with a linkage upper bevel gear and a linkage lower bevel gear, the linkage upper bevel gear and the linkage lower bevel gear are respectively coaxially provided with a telescopic pipe extending towards the adjacent moving steel pipe and penetrating through the moving steel pipe, the other end of the telescopic pipe is coaxially connected with the linkage upper bevel gear on the adjacent driving lead screw or the linkage lower bevel gear on the adjacent driving lead screw, and the linkage bevel gear close to the end of the driving lead screw is engaged with the driving bevel gear on the driving lead screw.

[0036] The linkage in the above technical solution drives the adjacent moving steel pipes to move close to or away from each other, so as to realize the size change of the overall moving steel pipes to form the supporting top surface to realize elongation or retraction. Based on the force load sensing information of the garage roof, the supporting top state is intelligently adjusted to meet the force load of each position of the garage roof, thereby reducing the labor and material costs. In order to achieve the above technical effects, all driving lead screws are parallel to and correspond to the corresponding driving lead screws, and the end of each driving lead screw is coaxially fixed with a driving bevel gear. The rotation of the driving bevel gear drives the driving lead screw to rotate. The two sides of the driving bevel gear are respectively engaged with a linkage upper bevel gear and a linkage lower bevel gear. The linkage upper bevel gear and the linkage lower bevel gear are respectively coaxially fixed with a telescopic pipe. The linkage bevel gear close to the end of the driving lead screw is engaged with the driving bevel gear on the driving lead screw.

[0037] Therefore, in actual use, the driving lead screw is used as a guide. The driving lead screw rotates under the drive of the servo motor, synchronously driving all the driving bevel gears to rotate. The linkage bevel gear close to the end of the telescopic pipe synchronously rotates under the rotation of the driving bevel gear. The linkage bevel gear drives the telescopic pipe to rotate, and the linkage lower bevel gear away from the linkage bevel gear also synchronously rotates. Since the linkage lower bevel gear is engaged with the driving bevel gear, the driving bevel gear is coaxially installed on the driving lead screw. Therefore, in the process of rotating the linkage lower bevel gear, the driving bevel gear rotates and drives the driving lead screw to rotate, so that all the driving bevel gears on the driving lead screw synchronously rotate. The driving bevel gears drive the telescopic pipe to rotate to realize elongation or retraction. The adjacent moving steel pipes move close to or away from each other, and in the process of moving close to or away from each other, the telescopic pipe is elongated or retracted, so that the overall supporting top state is adjusted to meet the force load of each position of the garage roof, thereby reducing the labor and material costs.

[0038] 9) The intelligent sensing adjusting supporting top device for a building garage according to 8), wherein:

[0039] The end of the moving steel pipe is blocked by a blocking block, the blocking block is provided with a limiting groove towards the side surface of the moving steel pipe, a ball bearing is fixed in the limiting groove, and the end of the driving lead screw is embedded into the ball bearing.

[0040] The above technical scheme uses the blocking block to support the driving lead screw, and the specific operation is as follows: the end of the moving steel pipe is blocked by the blocking block, the blocking block is locked and fixed by the moving steel pipe, the limiting groove provided towards the side surface of the moving steel pipe is used to fix the driving lead screw, in order to enable the driving lead screw to rotate smoothly, the ball bearing fixed in the limiting groove is coaxially connected with the driving lead screw, so that the driving lead screw can rotate smoothly under the action of the ball bearing.

[0041] 10) The intelligent induction adjusting and supporting device for building garage according to 1), wherein:

[0042] The upper moving slide rail comprises an upper fixed plate fixed on the garage roof plate, a plurality of strip-shaped upper sliding strips are uniformly arranged on the upper fixed plate along the garage axial direction, the positions of the upper sliding strips correspond to the positions of the pressure sensors one by one, the pressure sensors are arranged on the upper surface of the upper fixed plate towards the garage roof plate, each upper sliding strip is embedded in the upper fixed plate, and an upper sliding groove for reciprocating movement of the back-up steel pipe is formed in each upper sliding strip along the axial direction of the upper sliding strip.

[0043] The lower moving slide rail comprises a lower fixed plate fixed on the garage roof plate, a plurality of strip-shaped lower sliding strips are uniformly arranged on the lower fixed plate along the garage axial direction, each lower sliding strip is embedded in the lower fixed plate, and a lower sliding groove for reciprocating movement of the supporting steel pipe is formed in each lower sliding strip along the axial direction of the lower sliding strip.

[0044] Compared with the prior art, the present application has the following technical effects:

[0045] This invention uses several evenly distributed pressure sensors to detect the load on the garage roof. When the load information detected in real time by each pressure sensor in a certain area of ​​the garage roof is higher than a preset value in the microprocessor, it is determined that the load at the location of that pressure sensor exceeds the construction load requirement. The microprocessor then sends a command to start all servo motors. Each servo motor drives a starting screw to rotate, which in turn drives a starting bevel gear and a drive bevel gear. The drive bevel gear drives a telescopic tube near the starting screw to rotate via a linkage bevel gear. During this telescopic rotation, the coaxial linkage lower gear rotates, which in turn drives the drive bevel gear, which in turn drives the drive screw. The drive screw, in turn, drives several evenly distributed pressure sensors along its axial direction. The rotation of the transmission bevel gear, along with the synchronous drive of the starting bevel gear, causes the retractable tubes coaxially connected to it to extend and retract, allowing each support surface to move closer or further apart along the radial direction of the garage. This alters the dimensions of the entire telescopic frame unit, enabling the top and bottom support steel pipes to move closer together and jointly support the garage roof in a specific area. This ensures that the garage roof can withstand construction loads. Therefore, this invention can intelligently sense the load state of the garage roof and, based on this load information, intelligently adjust its support status to meet the load requirements at various locations on the garage roof. This reduces manpower and material costs, shares some of the load generated by large vehicles, and mitigates risks such as floor cracking or loads exceeding design values, ensuring project construction safety. Attached Figure Description

[0046] Figure 1 This is a schematic diagram of the intelligent sensor-adjustable roof support device for building garages according to the present invention;

[0047] Figure 2 for Figure 1 Sectional view of AA;

[0048] Figure 3 for Figure 1 A magnified view of a section at point B1;

[0049] Figure 4 for Figure 2 A magnified view of a portion of point C1. Detailed Implementation

[0050] The following detailed description illustrates the specific implementation method:

[0051] The reference signs in the drawings of the specification include: starting steel pipe 1, starting screw rod 2, lower sliding bar 3, lower fixed plate 4, supporting bottom steel pipe 5, transmission bevel gear 6, starting bevel gear 7, connecting steel pipe 8, servo motor 9, telescopic pipe 10, garage roof 11, upper fixed plate 12, upper sliding bar 13, back-up steel pipe 14, embedded screw rod 15, nut sleeve 16, moving cylinder 17, sleeve steel pipe 18, linkage lower bevel gear 19, telescopic screw rod 20, linkage upper bevel gear 21, driving bevel gear 22, driving screw rod 23, blocking block 24.

[0052] Embodiment, see Figure 1 and Figure 2 As shown in the drawings, the intelligent induction adjusting supporting roof device for building garage in the embodiment comprises a movable supporting bottom unit, a movable back-up unit and a telescopic frame unit. The movable supporting bottom unit is configured to have a lower movable sliding rail fixed at the bottom of the garage, and the upper surface of the lower movable sliding rail is provided with a plurality of supporting bottom steel pipes 5 arranged along the axial direction of the garage, each of which reciprocates along the radial direction of the garage.

[0053] The movable back-up unit is configured to have an upper movable sliding rail fixed at the top of the garage, and the inner surface of the upper movable sliding rail is provided with a plurality of pressure sensors arranged on the lower surface of the garage roof 11 and used for detecting the load of the garage roof 11. The upper surface of the upper movable sliding rail is provided with a plurality of back-up steel pipes 14 arranged along the axial direction of the garage, each of which reciprocates along the radial direction of the garage.

[0054] The telescopic frame unit is configured to have a telescopic frame located between the movable supporting bottom unit and the movable back-up unit. The top of the telescopic frame is connected with the bottom of the back-up steel pipe 14 to form an integrated structure, and the bottom of the telescopic frame is connected with the top of the supporting bottom steel pipe 5 to form an integrated structure. The telescopic frame is provided with a displacement frame which reciprocates along the radial direction of the garage together with the back-up steel pipe 14 and the supporting bottom steel pipe 5. The telescopic frame further comprises a microprocessor, and all the pressure sensors and the displacement frame are electrically connected with the microprocessor.

[0055] In the embodiment, the movable supporting bottom unit and the movable back-up unit limit the height of the telescopic frame unit, so that the telescopic frame unit can connect the movable supporting bottom unit and the movable back-up unit to support the garage roof 11, ensure that the underground garage roof 11 meets the construction load, and reduce the deformation of the underground garage roof 11. Meanwhile, the upper movable sliding rail of the movable back-up unit is fixed at the top of the garage, so that the top of the telescopic frame unit is connected with the top of the garage, and the lower movable sliding rail of the movable supporting bottom unit is fixed at the bottom of the garage, so that the bottom of the telescopic frame unit is connected with the bottom of the garage.

[0056] After the installation and fixation of the movable roof back-up unit, the telescopic frame unit and the movable roof support unit are completed, the overall structure of the telescopic frame unit supports the roof 11 of the garage, and during the back-up support of the roof 11 of the garage by the telescopic frame unit, the several pressure sensors in the upper movable slide rail are in contact with the roof 11 of the garage and detect the load information of each position of the roof 11 of the garage in real time, and all the pressure sensors send the real-time detected load information to the microprocessor.

[0057] When the load information detected by each pressure sensor in a certain area of the roof 11 of the garage is higher than the preset value in the microprocessor, it is judged that the load at the position of the roof 11 of the garage where the pressure sensor is located exceeds the requirement of the construction load, and the microprocessor issues an instruction to the telescopic frame unit to start the displacement frame corresponding to the displacement frame part of each pressure sensor in a certain area, so that the displacement frame parts are close to each other and drive the back-up steel pipe 14 and the support steel pipe 5 connected thereto to be close to each other synchronously, so that the back-up steel pipe 14 and the support steel pipe 5 close to each other support the roof 11 of the garage in a certain area together, thereby realizing the back-up of the roof 11 of the garage to meet the construction load. Therefore, the present application can intelligently sense the stress load state of the roof 11 of the garage, and intelligently adjust the support state of the roof 11 of the garage on the basis of the stress load sensing information of the roof 11 of the garage to meet the stress load of each position of the roof 11 of the garage, thereby reducing the cost of manpower and material resources.

[0058] Referring to Figure 3 In the embodiment, the upper movable slide rail includes an upper fixed plate 12 fixed on the roof 11 of the garage, and the upper fixed plate 12 is uniformly provided with several strip-shaped upper sliding strips 13 along the garage axial direction, the positions of the upper sliding strips 13 correspond to the positions of the pressure sensors one by one, the pressure sensors are arranged on the upper surface of the upper fixed plate 12 facing the roof 11 of the garage, each upper sliding strip 13 is embedded in the upper fixed plate 12, and an upper sliding groove for reciprocating movement of the back-up steel pipe 14 is formed in each upper sliding strip 13 along the axial direction thereof.

[0059] The lower movable slide rail includes a lower fixed plate 4 fixed at the bottom of the roof, and the lower fixed plate 4 is uniformly provided with several strip-shaped lower sliding strips 3 along the garage axial direction, each lower sliding strip 3 is embedded in the lower fixed plate 4, and a lower sliding groove for reciprocating movement of the support steel pipe 5 is formed in each lower sliding strip 3 along the axial direction thereof.

[0060] More specifically, referring to Figure 1As shown, the telescopic frame body in the embodiment includes a plurality of starting steel pipes 1 arranged uniformly along the height direction and parallel to each other, a plurality of connecting steel pipes 8 arranged uniformly along the axis direction and parallel to each other between adjacent starting steel pipes 1, the axis of each connecting steel pipe 8 being perpendicular to the axis of the starting steel pipe 1, and the two ends of each connecting steel pipe 8 being welded to the adjacent starting steel pipes 1 to form a single-face driving net, the top of the single-face driving net being welded to the back-up steel pipe 14, and the bottom of the single-face driving net being welded to the supporting bottom steel pipe 5, so that the single-face driving net is used as a support surface to drive the displacement frame to move back and forth along the radial direction of the garage.

[0061] In the embodiment, the plurality of starting steel pipes 1 arranged uniformly along the height direction and parallel to each other, in combination with the plurality of connecting steel pipes 8 arranged uniformly along the axis direction and parallel to each other between adjacent starting steel pipes 1, form a vertical vertical net, and the two ends of each connecting steel pipe 8 in the vertical net are welded to the adjacent starting steel pipes 1 to form a single-face driving net, so that the single-face driving net is used as a support surface to support the displacement frame and drive the displacement frame to gradually move towards or away from the support surface along the radial direction of the garage by the starting steel pipe 1, thereby achieving intelligent adjustment of the support top state to meet the stress load of each position of the garage roof 11, reduce the cost of manpower and material resources, and improve the construction speed.

[0062] Meanwhile, in the embodiment, the displacement frame includes a plurality of support top surfaces arranged uniformly along the height direction of the garage and moving back and forth along the radial direction, the position of each support top surface corresponding to the position of the back-up steel pipe 14 one by one, so that the top of each support top surface is welded to the back-up steel pipe 14, and the position of each support top surface corresponding to the position of the supporting bottom steel pipe 5 one by one, so that the bottom of each support top surface is welded to the supporting bottom steel pipe 5.

[0063] In the embodiment, the plurality of support top surfaces arranged uniformly along the height direction of the garage and moving back and forth along the radial direction form the displacement frame, the position of each support top surface corresponding to the position of the back-up steel pipe 14 one by one, and the top of each support top surface being welded to the back-up steel pipe 14, and meanwhile, the position of each support top surface corresponding to the position of the supporting bottom steel pipe 5 one by one, and the bottom of each support top surface being welded to the supporting bottom steel pipe 5, and the back-up steel pipe 14 being located on the upper surface of the upper moving slide rail and moving along the radial direction of the garage, and the supporting bottom steel pipe 5 being located on the upper surface of the lower moving slide rail and also moving along the radial direction of the garage, so that the back-up steel pipe 14 and the supporting bottom steel pipe 5 form an integrated structure with the top and bottom of all support top surfaces, and when the back-up steel pipe 14 and the supporting bottom steel pipe 5 move along the radial direction of the garage, all support top surfaces are driven to move towards or away from each other along the radial direction of the garage.

[0064] In addition, in the embodiment, the plurality of support top surfaces arranged uniformly along the height direction of the garage and moving back and forth along the radial direction form the displacement frame, the position of each support top surface corresponding to the position of the back-up steel pipe 14 one by one, and the top of each support top surface being welded to the back-up steel pipe 14, and meanwhile, the position of each support top surface corresponding to the position of the supporting bottom steel pipe 5 one by one, and the bottom of each support top surface being welded to the supporting bottom steel pipe 5, and the back-up steel pipe 14 being located on the upper surface of the upper moving slide rail and moving along the radial direction of the garage, and the supporting bottom steel pipe 5 being located on the upper surface of the lower moving slide rail and also moving along the radial direction of the garage, so that the back-up steel pipe 14 and the supporting bottom steel pipe 5 form an integrated structure with the top and bottom of all support top surfaces, and when the back-up steel pipe 14 and the supporting bottom steel pipe 5 move along the radial direction of the garage, all support top surfaces are driven to move towards or away from each other along the radial direction of the garage. Figure 2In the embodiment, each supporting top surface comprises a plurality of movable steel pipes arranged along the radial direction of the garage, all the movable steel pipes are parallel to the starting steel pipe 1, and a plurality of retractable pipes are arranged on both sides of the movable steel pipes along the axial direction of the movable steel pipes. The ends of all the retractable pipes on the same side of the movable steel pipes are jointly connected to the adjacent movable steel pipes or the starting steel pipe 1. The starting steel pipe 1 is provided with driving members for jointly driving the retractable pipes to extend or retract along the axial direction of the starting steel pipe 1.

[0065] In the embodiment, a plurality of movable steel pipes arranged along the radial direction of the garage jointly form the supporting top surface of the displacement frame. The position of each supporting top surface corresponds to the position of the starting steel pipe 1, and all the movable steel pipes are parallel to the starting steel pipe 1. The movable steel pipes are connected to each other by the retractable pipes arranged on both sides of the movable steel pipes along the axial direction of the movable steel pipes to jointly form retractable horizontal surfaces. The starting steel pipe 1 is provided with driving members for jointly driving all the retractable pipes to extend or retract. All the driving members simultaneously and synchronously drive all the retractable pipes on the retractable horizontal surfaces to move towards or away from the one-way driving net, so as to adjust the supporting state of the displacement frame to meet the stress load of each position of the garage roof 11 and reduce the cost of manpower and material resources.

[0066] Referring to FIGS. 1 to 8, Figure 1 and Figure 2 As shown in the figures, the driving member comprises a servo motor 9 electrically connected to a microprocessor and a starting lead screw 2 penetrating the starting steel pipe 1. The servo motor 9 is jointly installed on a fixed plate between the upper movable slide rail and the lower movable slide rail. The servo motor 9 has an output shaft extending towards the starting steel pipe 1. The free end of the output shaft is coaxially and fixedly connected to the starting lead screw 2. The starting lead screw 2 is uniformly provided with a plurality of starting bevel gears 7 along the axial direction of the starting lead screw 2. The starting lead screw 2 is drivingly connected to a linkage member for driving the adjacent movable steel pipes to move towards or away from each other. The position of each starting bevel gear 7 arranged along the axial direction of the starting lead screw 2 corresponds to the position of the retractable pipe, and each starting bevel gear 7 is drivingly connected to the corresponding retractable pipe through a transmission structure.

[0067] In the embodiment, each starting steel pipe 1 corresponds to a driving member, and the servo motor 9 in the driving member corresponds to one starting steel pipe 1. The output shaft of the servo motor 9 extending towards the starting steel pipe 1 is coaxially connected with the starting lead screw 2. The starting lead screw 2 extends along the axis of the starting steel pipe 1 and passes through the starting steel pipe 1 and is located in the starting steel pipe 1. A plurality of starting bevel gears 7 are uniformly distributed along the axis of the starting lead screw 2. The position of each starting bevel gear 7 corresponds to the position of the retraction pipe. Each starting bevel gear 7 is drivingly connected with the corresponding retraction pipe through a transmission structure. The starting bevel gear 7 near the output shaft of the starting lead screw 2 synchronously drives the adjacent moving steel pipes to move close to or away from each other through a linkage member, so that the starting bevel gear 7 drives the retraction pipe to extend or retract synchronously, and the adjacent moving steel pipes move close to or away from each other, thereby adjusting the supporting state of the overall supporting device.

[0068] Meanwhile, the transmission structure includes a driving lead screw 23 penetrating the moving steel pipe. The driving lead screw 23 is uniformly provided with a plurality of transmission bevel gears 6 along the axial direction thereof. Each transmission bevel gear 6 is engaged with a rotating bevel gear. The rotating bevel gear is coaxially connected with the retraction pipe. The other end of the retraction pipe is fixed on the adjacent moving steel pipe.

[0069] In the embodiment, when the driving lead screw 23 rotates, all the transmission bevel gears 6 are synchronously driven to rotate. When the transmission bevel gears 6 rotate, the rotating bevel gears engaged therewith are driven to rotate. In the process of rotating the rotating bevel gears, the retraction pipe is driven to rotate. Since the retraction pipe can be extended or retracted in the process of rotating, the retraction pipe can drive the adjacent moving steel pipes to move close to or away from each other.

[0070] In addition, in the embodiment, the retraction pipe includes an embedded lead screw 15. The end of the embedded lead screw 15 is coaxially connected with the transmission bevel gear 6. A nut sleeve 16 is sleeved on the embedded lead screw 15 along the axial direction thereof. The end of the embedded lead screw 15 has a clamping block limiting the nut sleeve 16. The outer surface of the nut sleeve 16 is fixed with a moving cylinder 17. The nut sleeve 16 is located in the moving cylinder 17 and drives the moving cylinder 17 to reciprocate along the axial direction. The end of the moving cylinder 17 away from the embedded lead screw 15 is fixed on the moving steel pipe.

[0071] The embodiment drives the inner-embedded screw rod 15 to rotate, and the inner-embedded screw rod 15 rotates to move the nut sleeve 16 along the axis of the inner-embedded screw rod 15. During the movement of the nut sleeve 16 along the axis of the inner-embedded screw rod 15, the nut sleeve 16 drives the moving cylinder 17 to reciprocate along the axis. When the nut sleeve 16 moves to the clamping block position along the axis of the inner-embedded screw rod 15, the nut sleeve 16 drives the moving cylinder 17 to move away from the inner-embedded screw rod 15. Meanwhile, the clamping block limits the movement position of the nut sleeve 16 to prevent the nut sleeve 16 from moving away from the inner-embedded screw rod 15. The cooperation of the inner-embedded screw rod 15 and the nut sleeve 16 drives the moving cylinder 17 to gradually move away from the inner-embedded screw rod 15 to extend the entire retractable tube. Conversely, the moving cylinder 17 gradually moves towards the inner-embedded screw rod 15 to shorten the entire retractable tube.

[0072] Referring to Figure 4 In the embodiment, the linkage member includes a driving bevel gear 22 coaxially fixed with the end of the driving screw rod 23. The two sides of the driving bevel gear 22 are respectively engaged with a linkage upper bevel gear 21 and a linkage lower bevel gear 19. The linkage upper bevel gear 21 and the linkage lower bevel gear 19 are respectively coaxially provided with an extension tube 10 extending towards the adjacent moving steel pipe and penetrating through the moving steel pipe. The other end of the extension tube 10 is coaxially connected with the linkage upper bevel gear 21 on the adjacent driving screw rod 23 or the linkage lower bevel gear 19 on the adjacent driving screw rod 23. The end of the extension tube 10 close to the starting screw rod 2 is provided with a linkage bevel gear engaged with the starting bevel gear 7 on the starting screw rod 2.

[0073] The linkage member drives the adjacent moving steel pipes to move close to or away from each other to change the size of the entire moving steel pipe to achieve the extension or retraction. Based on the force load sensing information of the garage roof 11, the linkage member intelligently adjusts the support state to meet the force load of each position of the garage roof 11 to reduce the labor and material cost. In order to achieve the above technical effect, the driving screw rod 23 penetrates through the moving steel pipe and is located in the moving steel pipe. All the driving screw rods 23 are parallel to and correspond to the starting screw rod 2. Meanwhile, the end of each driving screw rod 23 is coaxially fixed with the driving bevel gear 22. The rotation of the driving bevel gear 22 drives the driving screw rod 23 to rotate. The two sides of the driving bevel gear 22 are respectively engaged with the linkage upper bevel gear 21 and the linkage lower bevel gear 19. The linkage upper bevel gear 21 and the linkage lower bevel gear 19 are respectively coaxially fixed with the extension tube 10. The linkage bevel gear close to the end of the extension tube 10 of the starting screw rod 2 is engaged with the starting bevel gear 7 on the starting screw rod 2.

[0074] Therefore, in actual use, the starting lead screw 2 is used as a guide, and the starting lead screw 2 rotates under the driving of the servo motor 9, synchronously driving all the starting bevel gears 7 to rotate. The linkage bevel gear at the end of the telescopic pipe 10 close to the starting lead screw 2 synchronously rotates under the rotation of the starting bevel gear 7. The linkage bevel gear synchronously rotates the linkage lower bevel gear 19 while driving the telescopic pipe 10 to rotate. Since the linkage lower bevel gear 19 is engaged with the driving bevel gear 22, the driving bevel gear 22 is coaxially installed on the driving lead screw 23, so that the linkage lower bevel gear 19 rotates in the process, the driving bevel gear 22 rotates and drives the driving lead screw 23 to rotate, so that all the transmission bevel gears 6 on the driving lead screw 23 synchronously rotate, the transmission bevel gears 6 drive the telescopic pipe to rotate to realize extension or retraction, and the adjacent moving steel pipes are close to or away from each other, and in the process of the adjacent moving steel pipes close to or away from each other, the telescopic pipe 10 is extended or retracted, so that the whole itself adjusts the support state to meet the stress load of each position of the garage roof 11, and reduces the cost of manpower and material resources.

[0075] Meanwhile, the end of the moving steel pipe is blocked by the blocking block 24, the blocking block 24 is provided with a limiting groove on the side surface thereof, and a ball bearing is fixed in the limiting groove.

[0076] The blocking block 24 is used to support the driving lead screw 23 in the embodiment, and the specific operation is as follows: the end of the moving steel pipe is blocked by the blocking block 24, and the blocking block 24 is locked and fixed. The limiting groove provided on the side surface of the blocking block 24 is used to fix the driving lead screw 23. In order to enable the driving lead screw 23 to rotate smoothly, the ball bearing fixed in the limiting groove is coaxially connected with the driving lead screw 23, so that the driving lead screw 23 can rotate smoothly under the action of the ball bearing.

[0077] The embodiment uses several uniformly distributed pressure sensors to detect the load of the garage roof 11. When the load information detected by each pressure sensor in a certain area of the garage roof 11 is higher than the preset value in the microprocessor, it is judged that the load at the position of the garage roof 11 where the pressure sensor is located exceeds the requirement of the construction load. The microprocessor then issues an instruction to all servo motors 9 to start. Each servo motor 9 drives the start lead screw 2 to rotate, and the start lead screw 2 synchronously drives the start bevel gear 7 and the drive bevel gear 22. The drive bevel gear 22 drives the telescopic pipe 10 close to the start lead screw 2 to rotate through the linkage bevel gear. The linkage bevel gear drives the drive bevel gear 22 to rotate when it rotates, and the drive bevel gear 22 drives the drive lead screw 23 to rotate when it rotates. The drive lead screw 23 synchronously drives several transmission bevel gears 6 arranged along its axial direction to rotate. The transmission bevel gears 6 and the start bevel gears 7 synchronously drive the telescoping of the retraction pipe connected coaxially thereto, so as to realize the mutual approach or away of each supporting top surface along the radial direction of the garage, thereby changing the size of the entire telescopic frame unit. After the retraction steel pipe 14 and the supporting bottom steel pipe 5 approach each other, they jointly support the garage roof 11 in a certain area, thereby realizing the common retraction of the garage roof 11 to meet the construction load. Therefore, the present application can intelligently sense the stress load state of the garage roof 11, and intelligently adjust the supporting top state of the garage roof 11 based on the stress load sensing information of the garage roof 11 to meet the stress load of each position of the garage roof 11, thereby reducing the cost of manpower and material resources, sharing part of the load generated by large vehicles, reducing the risk of floor cracking or load exceeding the design value, and ensuring the safety of project construction.

[0078] The above is only an embodiment of the present scheme, and the common technical solutions and / or characteristics in the scheme are not described in detail. It should be noted that for those skilled in the art, without departing from the technical solutions of the present scheme, a number of modifications and improvements can be made, which should also be considered as the protection scope of the present scheme, and these will not affect the effect and practicality of the patent. The protection scope claimed in the present application should be subject to the content of its claims, and the specific implementation mode and the like in the specification can be used to explain the content of the claims.

Claims

1. A smart induction adjusting roof support device for a building garage, characterized in that, The utility model relates to a kind of movable support unit, which is configured to have lower mobile slide rail fixed at the bottom of garage, the upper surface of the lower mobile slide rail has several support steel pipes arranged along the axial direction of garage, and each support steel pipe reciprocates along the radial direction of garage;Movable backstop unit is configured to have upper mobile slide rail fixed at the top of garage, the upper mobile slide rail has several pressure sensors arranged uniformly under the top plate of garage and used for detecting the load of top plate of garage, and the upper surface of the upper mobile slide rail has several backstop steel pipes arranged along the axial direction of garage, and each backstop steel pipe reciprocates along the radial direction of garage;Telescopic frame unit is configured to have telescopic frame between movable support unit and movable backstop unit, the top of the telescopic frame is connected with the bottom of backstop steel pipe to form integrated structure, the bottom of the telescopic frame is connected with the top of support steel pipe to form integrated structure, the telescopic frame has displacement frame reciprocating along the radial direction of garage together with backstop steel pipe and support steel pipe, and microprocessor, all pressure sensors and displacement frame are electrically connected with microprocessor. The telescopic frame includes several start steel pipes arranged uniformly along the height direction and parallel to each other, several connection steel pipes parallel to each other are arranged along the axial direction between adjacent start steel pipes, the axes of all connection steel pipes are perpendicular to the axes of start steel pipes, respectively, both ends of the connection steel pipes are welded between adjacent start steel pipes to form single-sided driving net together, the top of the single-sided driving net is welded with backstop steel pipe, and the bottom of the single-sided driving net is welded with support steel pipe, so that the displacement frame is driven to reciprocate along the radial direction of garage by taking single-sided driving net as support surface. The displacement frame includes several top supporting surfaces arranged uniformly along the height direction of garage and reciprocating along the radial direction, the position of each top supporting surface corresponds to the position of backstop steel pipe one by one, so that the top of all top supporting surfaces is welded with backstop steel pipe, and the position of each top supporting surface corresponds to the position of support steel pipe one by one, so that the bottom of all top supporting surfaces is welded with support steel pipe. Each top supporting surface includes several mobile steel pipes arranged uniformly along the radial direction of garage, all mobile steel pipes are parallel to start steel pipes, several retractable retraction pipes are arranged uniformly along the axial direction of mobile steel pipe at both sides of mobile steel pipe, respectively, the end of all retraction pipes located at the same side of mobile steel pipe is connected rotatably on adjacent mobile steel pipe or start steel pipe, and the start steel pipe is arranged with driving member along the axial direction, which drives retraction pipe to elongate or retract together.

2. The intelligent induction adjusting and jacking device for building garage according to claim 1, characterized in that: ​ 3. The intelligent induction adjusting and jacking device for building garage according to claim 2, characterized in that: ​ 4. The intelligent induction adjusting and jacking device for building garage according to claim 3, characterized in that: ​ 5. The intelligent induction adjusting and jacking device for building garage according to claim 4, characterized in that: The driving member comprises a servo motor electrically connected with the microprocessor and a starting screw rod penetrating the starting steel pipe, the servo motor is jointly installed on the fixed plate between the upper moving slide rail and the lower moving slide rail, the servo motor has an output shaft extending towards the starting steel pipe, the free end of the output shaft is coaxially fixedly connected with the starting screw rod, the starting screw rod is uniformly provided with a plurality of starting bevel gears along the axial direction of the starting screw rod, the starting screw rod is drivingly connected with a linkage member driving adjacent moving steel pipes to move close to or away from each other through the starting bevel gears on the output shaft, the position of each starting bevel gear arranged along the axial direction of the starting screw rod corresponds to the position of the retraction pipe one by one, and each starting bevel gear is drivingly connected with the corresponding retraction pipe through a transmission structure.

6. The intelligent induction adjusting and jacking device for building garage according to claim 5, characterized in that: The transmission structure comprises a driving screw rod penetrating the moving steel pipe, the driving screw rod is uniformly provided with a plurality of transmission bevel gears along the axial direction of the driving screw rod, each transmission bevel gear is engaged with a rotating bevel gear, the rotating bevel gear is coaxially fixedly connected with the retraction pipe, and the other end of the retraction pipe is fixed on the adjacent moving steel pipe.

7. The intelligent induction adjusting and jacking device for building garage according to claim 6, characterized in that: The retraction pipe comprises an embedded screw rod, the end of the embedded screw rod is coaxially connected with the transmission bevel gear, a nut sleeve is sleeved on the embedded screw rod along the axial direction of the embedded screw rod, the end of the embedded screw rod is provided with a clamping block limiting the nut sleeve, a moving cylinder is fixed on the outer surface of the nut sleeve, the nut sleeve is located in the moving cylinder and drives the moving cylinder to reciprocate along the axial direction, and the end of the moving cylinder away from the embedded screw rod is fixed on the moving steel pipe.

8. The intelligent induction adjusting and jacking device for building garage according to claim 5, characterized in that: The linkage member comprises a driving bevel gear coaxially fixed with the end of the driving screw rod, the driving bevel gear is engaged with a linkage upper bevel gear and a linkage lower bevel gear on the two sides, respectively, the linkage upper bevel gear and the linkage lower bevel gear are coaxially provided with a telescopic pipe extending towards the adjacent moving steel pipe and penetrating the moving steel pipe, the other end of the telescopic pipe is coaxially connected with the linkage upper bevel gear on the adjacent driving screw rod or the linkage lower bevel gear on the adjacent driving screw rod, and the end of the telescopic pipe close to the starting screw rod is provided with a linkage bevel gear engaged with the starting bevel gear on the starting screw rod.

9. The intelligent induction adjusting and jacking device for building garage according to claim 8, characterized in that: The end of the moving steel pipe is blocked by a blocking block, a limiting groove is formed in the side surface of the moving steel pipe, a ball bearing is fixed in the limiting groove, and the end of the driving screw rod is embedded into the ball bearing.

10. The intelligent induction adjusting and jacking device for building garage according to claim 1, characterized in that: The upper moving slide rail comprises an upper fixed plate fixed on the garage roof, a plurality of strip-shaped upper sliding strips are uniformly arranged on the upper fixed plate along the garage axial direction, the positions of the upper sliding strips correspond to the positions of the pressure sensors one by one, the pressure sensors are arranged on the upper surface of the upper fixed plate facing the garage roof, each upper sliding strip is embedded in the upper fixed plate, and an upper sliding groove for reciprocating movement of the retracting steel pipe is formed in each upper sliding strip along the axial direction of the upper sliding strip. The lower moving slide rail comprises a lower fixed plate fixed at the bottom of the roof, and a plurality of strip-shaped lower sliding strips are uniformly arranged along the garage axis of the lower fixed plate, each lower sliding strip is embedded on the lower fixed plate, and a lower sliding groove for reciprocating movement of the supporting bottom steel pipe is formed in each lower sliding strip along the axis direction of the lower sliding strip.

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