CN219820132U - Automatic adjustable support variable-gradient steel pedestal for beam plate bottom wedge block - Google Patents

Abstract

The utility model discloses a steel pedestal with a variable slope for an automatic adjustable support for a wedge block at the bottom of a beam plate, wherein a bottom plate is in sliding connection with a sliding bottom plate and is connected with a push-pull mechanism, and the push-pull mechanism penetrates out of the side wall of the end face of a rectangular box frame; the platform frame is positioned above the bottom plate and connected with the bottom plate through a plurality of hydraulic lifting devices, the hydraulic lifting devices are not distributed on the same straight line, and meanwhile, the bottom end of the platform frame is connected with an inclination sensor; the number of the splicing blocks is multiple, and the splicing blocks are all spanned on two side walls of the rectangular box frame and spliced on two sides of the platform frame; two groups of splicing blocks positioned on two sides of the platform frame form two groups of splicing surfaces with the top surface higher than the platform frame; two splicing blocks adjacent to the edges of the two sides of the platform frame are connected with the top surface of the platform frame through a slope panel mechanism; the controller is electrically connected with the inclination angle sensor and the hydraulic lifting devices respectively. The utility model can automatically level the platform frame, not only can improve the fitting degree of the support surface and the concrete surface when the girder is erected on site, but also can improve the leveling efficiency and precision.

Description

Automatic adjustable support variable-gradient steel pedestal for beam plate bottom wedge block

Technical Field

The utility model relates to the technical field of precast box girder construction in bridge engineering, in particular to a steel pedestal with a variable gradient for a support, which is automatically adjustable in wedge blocks at the bottom of a girder plate.

Background

The prefabricated box girder is a girder body type frequently used in bridge engineering, and the span is generally 20-40 m. The prefabricated box girder body is attractive, and the prefabrication is convenient. Due to the longitudinal gradient relation of the roadbed, when the gradient is greater than 2%, the bottom of the precast box girder needs to be provided with wedge blocks for leveling so as to meet the level of the support. The wedge is influenced by the longitudinal gradient of the roadbed and the elevation of the bridge, and the height is often adjusted differently, so that the requirement on the activity characteristics of the pedestal is higher.

However, the traditional treatment methods such as sand burying in a beam making pedestal or wedge-shaped steel plate adding in the bottom of the beam are difficult to control in precision and complicated in construction process. If the treatment is improper, the support and the beam bottom embedded steel plate are supported unevenly and are free. Under the long-term action of the dynamic load of the vehicle, the support is easy to damage and even fall off, and hidden quality hazards are buried for the safety operation of the bridge. The existing pedestal is generally flat bottom, the gradient of the support cannot be adjusted, the support surface and the concrete surface are not tightly attached when the girder is erected on site, potential safety hazards are generated, and the construction precision of the wedge block is limited to the fine and standardized construction of bridge engineering.

In addition, the leveling operation is carried out on the precast box girder in the prior art in an artificial mode, so that the working efficiency is low, the leveling precision of the precast box girder is insufficient, and the joint degree of a support surface and a concrete surface is poor when the precast box girder is erected on site.

Therefore, how to provide a beam slab bottom wedge block automatic adjustable support variable slope steel pedestal for improving the bonding degree of a support surface and a concrete surface during on-site beam erection, so as to solve the problem that the bonding of the support surface and the concrete surface is not practical during on-site beam erection, and the problem to be solved by the person skilled in the art is needed.

Disclosure of Invention

In view of the above, the utility model provides a beam plate bottom wedge block automatic adjustable support variable gradient steel pedestal, which aims to solve the technical problems.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

a beam slab bottom wedge block automatically adjustable support variable slope steel pedestal comprising:

a box base; the box seat comprises a sliding bottom plate and a rectangular box frame detachably connected with the edge of the sliding bottom plate;

a sliding platform; the sliding platform comprises a bottom plate and a platform frame; the bottom plate is connected with the sliding bottom plate in a sliding way and is connected with a push-pull mechanism, and the push-pull mechanism penetrates out of the side wall of the end face of the rectangular box frame; the platform frame is positioned above the bottom plate and connected with the bottom plate through a plurality of hydraulic lifting devices, the hydraulic lifting devices are not distributed on the same straight line, and meanwhile, the bottom end of the platform frame is connected with an inclination sensor;

splicing blocks; the number of the splicing blocks is multiple, and the splicing blocks are respectively spanned on two side walls of the rectangular box frame and spliced on two sides of the platform frame; the two groups of splicing blocks positioned on two sides of the platform frame form two groups of splicing surfaces with the top surface higher than the platform frame; two splicing blocks adjacent to the edges of two sides of the platform frame are connected with the top surface of the platform frame through a slope panel mechanism;

and the controller is electrically connected with the inclination angle sensor and the hydraulic lifting devices respectively so as to control the level of the platform frame.

Preferably, the hydraulic lifting device includes:

the cylinder body of the hydraulic cylinder is vertically fixed at the bottom end of the platform frame, the bottom end of the hydraulic cylinder is a rod end of the hydraulic cylinder, and the hydraulic cylinder is electrically connected with the controller;

the pier stud, the one end of pier stud is fixed on the piston rod of pneumatic cylinder, the other end butt is in on the bottom plate.

Preferably, the method further comprises: lifting support mechanism, and lifting support mechanism includes:

the mounting seat is connected to the bottom end of the platform frame and is positioned among the hydraulic cylinders;

the worm is vertically arranged, and the top end of the worm is rotationally connected to the mounting seat;

the two guide shafts are vertically arranged and are respectively arranged at two opposite sides of the worm;

the nut seat is respectively communicated with a threaded hole and two unthreaded holes, the threaded holes are positioned between the two unthreaded holes, the nut seat is connected to the worm through the threaded holes in a screwed mode, meanwhile, the two guide shafts are correspondingly inserted into the two unthreaded holes one by one, the nut seat can reciprocate along the vertical direction through the two unthreaded holes relative to the two guide shafts, a limiting plate is fixed at the bottom end of each guide shaft, and the size of the limiting plate is larger than the diameter of the corresponding unthreaded hole;

the support columns are vertically arranged, the support columns are internally penetrated with the containing cavities, and the top ends of the support columns are provided with inlets communicated with the containing cavities; the top end of the support column is fixed on the nut seat, the outer diameter of the support column is smaller than the distance between the two light holes, and meanwhile, the accommodating cavity is communicated with the threaded hole through the inlet;

and one end of the rocker is connected with a turbine, the turbine is connected with the worm in a transmission way, and meanwhile, the other end of the rocker penetrates through the side wall of the rectangular box frame, extends out of the rectangular box frame and is connected with a handle.

Preferably, the splicing block comprises a steel beam and a splicing plate fixed on the top surface of the steel beam, the steel beam spans over two side walls of the rectangular box frame, and elastic propping pieces are arranged at two ends of the bottom surface of the steel beam, so that the steel beam and the inner side wall of the rectangular box frame are propped tightly. The splicing blocks can be removed, replaced and adjusted according to the position movement of the sliding platform, and then the forming position of the wedge blocks is controlled.

Preferably, the elastic propping piece comprises a limiting cylinder fixed on the bottom surface of the steel beam, a propping pin is slidably connected in the limiting cylinder, one end, far away from the side wall of the rectangular box frame, of the propping pin is vertically fixed with a vertical rod, the vertical rod upwards penetrates through a sliding groove formed in the flange plate of the steel beam, a supporting frame corresponding to the vertical rod is fixed on the flange plate, the supporting frame is connected with the vertical rod through a first tension spring, and the propping pin is propped against the inner side wall of the rectangular box frame under the elastic tension of the tension spring. The jacking pin can automatically jack up on the side wall of the rectangular box frame under the action of the first tension spring, and can be unlocked by jacking the upright rod to move the jacking pin, so that the steel beam is disassembled.

It should be noted that, the combined structure provided by the utility model is a structure formed by combining steel plates, I-steel or channel steel, for example, the steel beam is U-shaped channel steel and is rotated by 90 degrees to form an upper flange plate and a lower flange plate, and the elastic jacking piece is connected to the lower flange plate, so that a space capable of extending into the upright rod exists from the side direction. In addition, the side wall of the rectangular box frame is provided with a hollowed-out area corresponding to the side wall, so that a tool can extend into the rectangular box frame to repair part of the structure in the rectangular box frame.

Preferably, the rectangular box frame comprises I-beams at two sides and end plates fixed at two ends of the two I-beams through bolts; and the jacking pin is abutted with the flange plate at the top end of the I-beam. The I-beam has the advantages of easy assembly and disassembly, reserves an avoidance gap for the control of an internal structure, and provides a locking position for the jacking pin.

Preferably, the middle parts of the steel beams are all provided with connecting holes; two groups of steel beams positioned on two sides of the platform frame are respectively locked on the side walls of two ends of the rectangular box frame through screws and nuts. The splicing blocks are locked and fixed through the screw and the nuts, so that the stability of the board is stronger.

Preferably, the slope board mechanism comprises a slope board and a second tension spring; the slope board is hinged with the splice plate through a hinge, the second tension spring is tensioned between the steel beam and the slope board, and the edge of the slope board is abutted to the top surface of the platform frame under the elastic tension of the second tension spring. The slope surface plate is controlled by the second tension spring, so that the slope surface plate is always abutted to the slope surface plate when the angle of the platform frame changes, and the effect is better.

Preferably, the rectangular box frame is connected with the sliding bottom plate through a bolt connecting piece. Easy to disassemble and assemble, and simpler and more convenient to connect.

Compared with the prior art, the utility model discloses the support variable-gradient steel pedestal with the automatically adjustable wedge block at the bottom of the beam plate, which has the following beneficial effects:

according to the utility model, the sliding platform can be moved in position through the push-pull mechanism, the horizontal angle change of the platform frame is always monitored through the inclination angle sensor, so that when the inclination angle sensor detects that the horizontal inclination angle of the platform frame exists, the horizontal angle information of the detected platform frame is transmitted to the controller, the controller can control the extension length of the piston rods in the hydraulic lifting devices, so that the platform frame can be adjusted to be in a horizontal state through the hydraulic lifting devices, the position and angle control precision in the prefabrication process of the wedge block at the bottom of the girder can be adapted, and the problems of unrealistic bonding between the support surface and the concrete surface and production safety during girder erection on site are solved.

In addition, whether the platform frame is horizontal or not is always monitored by the inclination sensor, and the extending length of the piston rods in the hydraulic lifting devices is controlled by the controller, so that manual leveling is not needed, the working efficiency is high, the accuracy of the platform frame in keeping horizontal can be improved, and the degree of bonding between the support surface and the concrete surface during on-site girder erection can be improved.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present utility model, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of a steel stand according to the present utility model;

FIG. 2 is a perspective view of a steel stand provided by the present utility model;

FIG. 3 is a schematic view of the direction A in FIG. 2 provided by the present utility model;

FIG. 4 is an enlarged view of B in FIG. 2 provided by the present utility model;

fig. 5 is a schematic structural diagram of the sliding platform provided by the utility model.

Wherein:

1, a box seat;

11-a sliding bottom plate; 12-rectangular box frames; 121-an i-beam;

2-a sliding platform;

21-a bottom plate; 211-mounting seats; 212-worm; 213-guide shaft; 214-a nut seat; 218-limiting plates; 215-supporting columns; 216-rocker; 217-turbine; 219-handle; 22-platform rack; 210-a vertical plate; 20-lifting supporting mechanisms;

3-splice blocks;

31-steel beams; 32-splice plates; 33-screw; 34-nut;

4-a push-pull mechanism;

41-a first nut; 42-pushing and pulling a screw rod;

5-a hydraulic lifting device;

a 51 hydraulic cylinder; 52-pier studs;

6-a slope panel mechanism;

61-slope panels; 62-a second tension spring; 63-hinges;

7-elastic propping piece;

71-a limiting cylinder; 72-pushing the pin tightly; 73-standing a pole; 74-supporting frames; 75-first tension spring.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1 to 5, the embodiment of the utility model discloses a beam slab bottom wedge block automatic adjustable support variable slope steel pedestal, which comprises:

a box base 1; the box seat 1 comprises a sliding bottom plate 11 and a rectangular box frame 12 detachably connected with the edge of the sliding bottom plate 11;

a sliding platform 2; the sliding platform 2 comprises a bottom plate 21 and a platform frame 22; the bottom plate 21 is in sliding connection with the sliding bottom plate 11 and is connected with the push-pull mechanism 4, and the push-pull mechanism 4 penetrates out of the end face side wall of the rectangular box frame 12; the platform frame 22 is positioned above the bottom plate 21 and connected with the bottom plate 21 through a plurality of hydraulic lifting devices 5, the hydraulic lifting devices 5 are not distributed on the same straight line, and meanwhile, the bottom end of the platform frame 22 is connected with an inclination sensor;

splice block 3; the number of the splicing blocks 3 is multiple, and the splicing blocks are respectively spanned on two side walls of the rectangular box frame 12 and spliced on two sides of the platform frame 22; the two groups of splicing blocks 3 positioned on two sides of the platform frame 22 form two groups of splicing surfaces with the top surface higher than the platform frame 22; two splicing blocks 3 adjacent to the edges of the two sides of the platform frame 22 are connected with the top surface of the platform frame 22 through a slope panel mechanism 6;

the controller is electrically connected with the inclination angle sensor and the hydraulic lifting devices 5 respectively to control the horizontal of the platform frame 22.

By adopting the technical scheme, the sliding platform 2 can be moved by the push-pull mechanism 4, the horizontal angle change of the platform frame 22 is always monitored by the inclination sensor, so that when the inclination sensor detects that the horizontal inclination of the platform frame 22 exists, the horizontal angle information of the detected platform frame 22 is transmitted to the controller, the controller can control the extension length of the piston rods in the hydraulic lifting devices 5, so that the platform frame 22 can be adjusted to be in a horizontal state by the hydraulic lifting devices 5, the position and angle control precision in the prefabrication process of the wedge block at the bottom of the girder can be adapted, and the problems of unrealistic joint between the support surface and the concrete surface and production safety during girder erection on site are solved.

In addition, whether the platform frame 22 is horizontal or not is always monitored by the inclination sensor, and the extending length of the piston rods in the hydraulic lifting devices 5 is controlled by the controller, so that manual leveling is not needed, the working efficiency is high, the accuracy of the platform frame 22 in keeping horizontal can be improved, and the degree of bonding between the support surface and the concrete surface during girder erection on site can be improved.

Referring to fig. 2 and 5, a vertical plate 210 is fixed on one side of the bottom plate 21, which is close to the push-pull mechanism 4, and a through hole is formed in the vertical plate 210; the push-pull mechanism 4 comprises a first nut 41 and a push-pull screw 42, wherein the first nut 41 is fixed at the edge of the through hole, one end of the push-pull screw 42 penetrates through the through hole and is in threaded connection with the first nut 41, and the other end of the push-pull screw penetrates out of the side wall of the end face of the rectangular box frame 12.

By adopting the technical scheme, the position movement of the bottom plate 21 can be realized by externally controlling the rotation of the push-pull screw rod 42, so that the position movement of the sliding platform 2 is controlled, the control precision is higher, and the operation is convenient.

Referring to fig. 2 and 5, the hydraulic lifting device 5 includes:

the hydraulic cylinder 51, the cylinder body of the hydraulic cylinder 51 is vertically fixed at the bottom end of the platform frame 22, the bottom end of the hydraulic cylinder 51 is the rod end of the hydraulic cylinder 51, and meanwhile, the hydraulic cylinder 51 is electrically connected with the controller;

pier 52, and one end of pier 52 is fixed to a piston rod of hydraulic cylinder 51, and the other end abuts on bottom plate 21.

According to the technical scheme, the horizontal angle change of the platform frame 22 is always monitored through the inclination angle sensor, so that when the inclination angle sensor detects that the horizontal inclination angle of the platform frame 22 exists, the horizontal angle information of the detected platform frame 22 is transmitted to the controller, the controller controls the extending lengths of piston rods in the hydraulic cylinders 51, and the bottom ends of the pier columns 52 can be abutted against the bottom plate 21 so as to support the platform frame 22 and keep the platform frame 22 horizontal.

Referring to fig. 2 and 5, further comprising: the elevating support mechanism 20, and the elevating support mechanism 20 includes:

the mounting seat 211, the mounting seat 211 is connected to the bottom end of the platform frame 22, and is positioned among the plurality of hydraulic cylinders 51;

the worm 212 is vertically arranged, and the top end of the worm 212 is rotationally connected to the mounting seat 211;

the guide shafts 213 are two, are vertically arranged, and are respectively arranged on two opposite sides of the worm 212;

the nut seat 214, threaded holes and two unthreaded holes are respectively penetrated through the nut seat 214, the threaded holes are positioned between the two unthreaded holes, the nut seat 214 is connected to the worm 212 through the threaded holes in a screwed manner, meanwhile, the two guide shafts 213 are correspondingly inserted into the two unthreaded holes one by one, the nut seat 214 can reciprocate along the vertical direction relative to the two guide shafts 213 through the two unthreaded holes, a limiting plate 218 is fixed at the bottom end of each guide shaft 213, and the size of the limiting plate 218 is larger than the diameter of the corresponding unthreaded hole;

the support columns 215 are vertically arranged, the support columns 215 are internally penetrated with the containing cavities, and the top ends of the support columns 215 are provided with inlets communicated with the containing cavities; the top end of the supporting column 215 is fixed on the nut seat 214, the outer diameter of the supporting column 215 is smaller than the distance between two light holes, and meanwhile, the accommodating cavity is communicated with the threaded hole through the inlet;

and one end of the rocker 216 is connected with a turbine 217, the turbine 217 is in transmission connection with the worm 212, and meanwhile, the other end of the rocker 216 penetrates through the side wall of the rectangular box frame 12 to extend out of the rectangular box frame 12 and is connected with a handle 219.

According to the technical scheme, after the platform frame 22 is leveled by the plurality of hydraulic lifting devices 5 and supported by the plurality of hydraulic lifting devices 5, the rocking rod 216 is rocked by hands or auxiliary tools, the worm 212 can be driven to rotate by the turbine 217, so that the nut seat 214 which is spirally connected to the worm 212 can be driven to move in the vertical direction, the supporting column 215 can be abutted against the bottom plate 21, and the platform frame 22 can be further supported by the lifting supporting mechanism 20, so that the compression capacity of the platform frame 22 can be improved.

Moreover, since the supporting column 215 is internally penetrated with the accommodating cavity, and the top end of the supporting column 215 is provided with the inlet communicated with the accommodating cavity, when the nut seat 214 is lifted relative to the worm 212, the bottom end of the worm 212 can extend into the accommodating cavity through the inlet, so that a retention space can be provided for the worm 212 through the accommodating cavity, and the nut seat 214 can be lifted normally.

Referring to fig. 4, the splicing block 3 comprises a steel beam 31 and a splicing plate 32 fixed on the top surface of the steel beam 31, wherein the steel beam 31 spans across the two side walls of the rectangular box frame 12, and elastic propping pieces 7 are arranged at the two ends of the bottom surface of the steel beam 31, so that the steel beam 31 is propped against the inner side walls of the rectangular box frame 12.

By adopting the technical scheme, the splicing block 31 can be disassembled, replaced and adjusted according to the position movement of the sliding platform 2, so that the forming position of the wedge block is controlled.

Referring to fig. 3, the elastic propping member 7 includes a limiting cylinder 71 fixed on the bottom surface of the steel beam 31, a propping pin 72 is slidably connected in the limiting cylinder 71, one end of the propping pin 72 away from the side wall of the rectangular box frame 12 is vertically fixed with a vertical rod 73, the vertical rod 73 upwards passes through a sliding groove formed in a flange plate of the steel beam 31, a supporting frame 74 corresponding to the vertical rod 73 is fixed on the flange plate, the supporting frame 74 is connected with the vertical rod 73 through a first tension spring 75, and the propping pin 72 is propped against the inner side wall of the rectangular box frame 12 under the elastic tension of the first tension spring 75.

By adopting the technical scheme, the jacking pin 72 can be automatically jacked on the side wall of the rectangular box frame 12 under the action of the first tension spring 75, and the jacking pin 72 can be unlocked by jacking the upright rod 73 to move, so that the steel beam is disassembled.

In order to further optimize the technical solution, the rectangular box frame 12 comprises two I-beams 121 on two sides, and end plates fixed on two ends of the two I-beams 121 through bolts; the knock pin 72 abuts against the flange plate at the top end of the i-beam 121.

The i-beam 121 can be removed before the beam slab is tensioned in the embodiment, so that the beam body is completely borne by the sliding platform 2, and the problems that the end part of the beam end, which is stressed and concentrated, is crushed and the wedge block at the front end is damaged are solved.

In order to further optimize the technical scheme, the middle parts of the steel beams 31 are all provided with connecting holes; two groups of steel beams 31 positioned on two sides of the platform frame 22 are respectively locked on two side walls of the rectangular box frame 12 through screw rods 33 and nuts 34.

Referring to fig. 4, the slope board mechanism 6 includes a slope board 61 and a second tension spring 62; the slope plate 61 is hinged with the splice plate 32 through a hinge 63, the second tension spring 62 is tensioned between the steel beam 31 and the slope plate 61, and the edge of the slope plate 61 is abutted against the top surface of the platform frame 22 under the elastic tension of the second tension spring 62.

In order to further optimize the above technical solution, the rectangular box frame 12 is connected to the skid base plate 11 by means of screw connections.

In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant points refer to the description of the method section.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (9)

1. The utility model provides a variable slope steel pedestal of support with adjustable beam slab board bottom wedge is automatic, its characterized in that includes:

a box base (1); the box seat (1) comprises a sliding bottom plate (11) and a rectangular box frame (12) detachably connected with the edge of the sliding bottom plate (11);

a sliding platform (2); the sliding platform (2) comprises a bottom plate (21) and a platform frame (22); the bottom plate (21) is in sliding connection with the sliding bottom plate (11) and is connected with the push-pull mechanism (4), and the push-pull mechanism (4) penetrates out of the end face side wall of the rectangular box frame (12); the platform frame (22) is positioned above the bottom plate (21) and connected with the bottom plate (21) through a plurality of hydraulic lifting devices (5), the hydraulic lifting devices (5) are not distributed on the same straight line, and meanwhile, the bottom end of the platform frame (22) is connected with an inclination sensor;

a splice block (3); the number of the splicing blocks (3) is multiple, and the splicing blocks are respectively spanned on two side walls of the rectangular box frame (12) and spliced on two sides of the platform frame (22); the two groups of splicing blocks (3) positioned on two sides of the platform frame (22) form two groups of splicing surfaces with the top surface higher than the platform frame (22); two splicing blocks (3) adjacent to the edges of the two sides of the platform frame (22) are connected with the top surface of the platform frame (22) through a slope panel mechanism (6);

and the controller is respectively and electrically connected with the inclination angle sensor and the hydraulic lifting devices (5) so as to control the level of the platform frame (22).

2. The automatically adjustable support variable-slope steel bench of a beam slab bottom wedge block according to claim 1, characterized in that said hydraulic lifting device (5) comprises:

the cylinder body of the hydraulic cylinder (51) is vertically fixed at the bottom end of the platform frame (22), the bottom end of the hydraulic cylinder (51) is the rod end of the hydraulic cylinder (51), and the hydraulic cylinder (51) is electrically connected with the controller;

and one end of the pier column (52) is fixed on a piston rod of the hydraulic cylinder (51), and the other end of the pier column (52) is abutted on the bottom plate (21).

3. The beam-slab floor wedge block automatically adjustable support variable-slope steel pedestal of claim 2, further comprising: -a lifting support mechanism (20), and the lifting support mechanism (20) comprises:

the mounting seat (211) is connected to the bottom end of the Ping Taijia (22) and is positioned among the hydraulic cylinders (51);

the worm (212) is vertically arranged, and the top end of the worm (212) is rotationally connected to the mounting seat (211);

the guide shafts (213) are vertically arranged, and are respectively arranged on two opposite sides of the worm (212);

the nut seat (214), threaded holes and two unthreaded holes are respectively penetrated through the nut seat (214), the threaded holes are positioned between the two unthreaded holes, the nut seat (214) is connected to the worm (212) through the threaded holes in a screwed mode, meanwhile, the two guide shafts (213) are correspondingly inserted into the two unthreaded holes one by one, the nut seat (214) can reciprocate along the vertical direction relative to the two guide shafts (213) through the two unthreaded holes, a limiting plate (218) is fixed at the bottom end of each guide shaft (213), and the size of the limiting plate (218) is larger than the diameter of the corresponding unthreaded hole;

the support columns (215) are vertically arranged, the support columns (215) are internally penetrated with containing cavities, and the top ends of the support columns (215) are provided with inlets communicated with the containing cavities; the top end of the supporting column (215) is fixed on the nut seat (214), the outer diameter of the supporting column (215) is smaller than the distance between the two light holes, and meanwhile the accommodating cavity is communicated with the threaded hole through the inlet;

and one end of the rocker (216) is connected with a turbine (217), the turbine (217) is in transmission connection with the worm (212), and meanwhile, the other end of the rocker (216) penetrates through the side wall of the rectangular box frame (12) to extend out of the rectangular box frame (12) and is connected with a handle (219).

4. A beam slab bottom wedge automatic adjustable support variable slope steel pedestal according to any one of claims 1-3, wherein the splicing block (3) comprises a steel beam (31) and a splicing plate (32) fixed on the top surface of the steel beam (31), the steel beam (31) spans on two side walls of the rectangular box frame (12), and elastic jacking pieces (7) are arranged on two ends of the bottom surface of the steel beam (31) so that the steel beam (31) is propped against the inner side wall of the rectangular box frame (12).

5. The automatic adjustable support variable-gradient steel pedestal of the beam slab bottom wedge block according to claim 4, wherein the elastic jacking piece (7) comprises a limiting cylinder (71) fixed on the bottom surface of the steel beam (31), a jacking pin (72) is slidably connected inside the limiting cylinder (71), one end, away from the side wall of the rectangular box frame (12), of the jacking pin (72) is vertically fixed with a vertical rod (73), the vertical rod (73) upwards penetrates through a sliding groove formed in a flange plate of the steel beam (31), a supporting frame (74) corresponding to the vertical rod (73) is fixed on the flange plate, the supporting frame (74) is connected with the vertical rod (73) through a first tension spring (75), and the jacking pin (72) jacks up on the inner side wall of the rectangular box frame (12) under the elastic tension of the first tension spring (75).

6. The automatic adjustable support variable-slope steel pedestal of the wedge block at the bottom of the beam plate according to claim 5, wherein the rectangular box frame (12) comprises two I-beams (121) and end plates fixed at two ends of the two I-beams (121) through bolts; the jacking pin (72) is abutted with a flange plate at the top end of the I-beam (121).

7. The automatic adjustable support variable-gradient steel pedestal for the wedge block at the bottom of the beam plate according to claim 4, wherein the middle parts of the steel beams (31) are all provided with connecting holes; two groups of steel beams (31) positioned on two sides of the platform frame (22) are respectively locked on the side walls of two ends of the rectangular box frame (12) through screws (33) and nuts (34).

8. The automatic adjustable support variable slope steel pedestal of the beam slab bottom wedge block according to claim 4, characterized in that the slope slab mechanism (6) comprises a slope slab (61) and a second tension spring (62); the slope plate (61) is hinged with the splice plate (32) through a hinge (63), the second tension spring (62) is tensioned between the steel beam (31) and the slope plate (61), and the edge of the slope plate (61) is abutted to the top surface of the platform frame (22) under the elastic tension of the second tension spring (62).

9. A beam-slab bottom wedge automatically adjustable support variable-slope steel bench according to any of claims 1-3 and 5-8, characterized in that said rectangular box frame (12) is connected to said slip floor (11) by means of a bolted connection.