Hydraulic jacking device for mounting steel truss

Abstract

A hydraulic jacking device for mounting a steel truss comprises a plurality of jacking frame standard knots which are vertically connected, a hydraulic jack, a bottom support and a top support, and each jacking frame standard knot comprises a plurality of groups of steel vertical rods and steel transverse rods which are oppositely and perpendicularly arranged. The steel cross rods are horizontally and fixedly connected among each group of the steel vertical rods which are relatively and vertically arranged, the hydraulic jacks are arranged in cavities of the jacking frame standard knots which are vertically connected, the bottom supports are arranged between the bottom ends of the hydraulic jacks and the jacking frame standard knots, and each bottom support comprises a bottom supporting plate, a steel square pipe and a hand wheel; the top support is arranged below the top plate and comprises a long stress square pipe fixedly installed at the bottom end of the top plate. The device solves the technical problems that in the construction process of an existing jacking device, stress square steel needs to be manually transferred, time and labor are wasted, and accidents are caused by accidental falling.

Description

TECHNICAL FIELD

[0001] The utility model relates to jacking device technical field especially relates to a hydraulic jacking device for steel net rack installation. BACKGROUND

[0002] Steel net rack structure is by a lot of bars from two or a few direction rules constitute high order hyperstatic space structure, because mutual support effect between bars, it changes plane truss stress system, can bear load from all directions, and its rigidity is big, integrality is good, and the anti-seismic capacity is strong. The basic unit of constituting steel net rack includes triangle cone, three prism, cube, truncated four corner cone etc. can be combined into plane trattice system net rack, four face cone system net rack, triangle cone system net rack etc. different net rack forms by these basic units. Steel net rack application is very extensive, can be used in gymnasium, theatre, waiting room, stadium stand canopy etc. building roof.

[0003] Steel net rack jacking method construction has the characteristics of low construction cost, small by site condition influence, convenient operation, is the net rack installation more effective method. The existing jacking device usually is hydraulic jack and lifts one standard jacking stroke after installing one jacking frame standard section, then pump station back oil makes hydraulic jack cylinder body rise, again moves force square steel pipe to one standard section, thus completes one stroke, because force square steel pipe needs worker to shift, and the length is longer, in the construction process, there can be unexpected drop situation, causes accident, simultaneously, the shift process is more troublesome, time-consuming and laborious. UTILITY MODEL CONTENTS

[0004] The utility model discloses a hydraulic jacking device for steel net rack installation, which solves the technical problems of the existing jacking device, such as manual transfer of force square steel pipe, time-consuming and laborious, and possible accidents caused by unexpected drop during construction.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a hydraulic jacking device for installing a steel space frame, characterized in that it comprises: multiple vertically connected standard sections of the jacking frame, a hydraulic jack, a bottom support, and a top support. Each standard section of the jacking frame includes multiple sets of relatively vertically arranged steel vertical rods and multiple steel horizontal rods. Each set of relatively vertically arranged steel vertical rods is horizontally fixedly connected to a steel horizontal rod. The hydraulic jack is disposed within the cavity of the multiple vertically connected standard sections of the jacking frame. A base plate is fixedly connected to the bottom end of the hydraulic jack, and a top plate is fixedly connected to the telescopic end of the hydraulic jack. The bottom support is disposed between the bottom end of the hydraulic jack and the standard section of the jacking frame. The bottom support includes a bottom support plate, a steel square tube, and a handwheel. The steel square tube is fixedly connected to... On both sides of the bottom end of the bottom support plate, two telescopically adjustable short force-bearing square tubes are installed inside the cavity of the steel square tube. A locking block is fixedly connected to the side wall of each short force-bearing square tube that is far apart from each other, and a rectangular strip is fixedly connected to the side wall of each short force-bearing square tube that is close to each other. The rectangular strips are staggered. An installation cavity is opened on the side wall of each rectangular strip that is close to each other, and a rack is fixedly installed in each installation cavity. A gear is movably meshed between the two racks. A rotating shaft is fixedly passed through the shaft of the gear. The top end of the rotating shaft movably passes through the steel square tube and the bottom support plate and is fixedly connected to a handwheel. The bottom end of the rotating shaft is rotatably installed on the bottom wall of the steel square tube cavity. The top support is located below the top plate and includes a long force-bearing square tube fixedly installed at the bottom end of the top plate.

[0006] Preferably, two steel limiting sleeves are fixedly installed on the top wall of the steel crossbar.

[0007] Preferably, the steel square tube is a rectangular column with both ends extending through it.

[0008] Preferably, a first connecting rod is fixedly connected between the bottom support plate of the bottom support and the bottom plate of the hydraulic jack. A through hole is provided at the center of the first connecting rod, and a reinforcing block is fixedly installed in the through hole.

[0009] Preferably, rectangular grooves are provided on the side wall of the two short force-bearing square tubes that are close to each other. The two rectangular grooves are staggered, and the rack moves and engages with the corresponding rectangular groove during the movement of the two short force-bearing square tubes.

[0010] Preferably, a steel cap is fixedly connected to the top plate of the telescopic end of the hydraulic jack.

[0011] Preferably, two long load-bearing square tubes are provided, and a top support plate is provided below them. A second connecting rod is fixedly connected between the top support plate and the long load-bearing square tube.

[0012] Preferably, the inner wall surface of the steel limiting sleeve is provided with a locking groove, which is in the shape of a cross.

[0013] This utility model has the following beneficial effects:

[0014] 1. This utility model features a standard section for the lifting frame. The bottommost standard section is fixedly installed on the ground, and the hydraulic jack is placed inside the cavity of the standard section. This facilitates the addition of the standard section after the hydraulic jack has been lifted. The bottom support provides support between the bottom of the hydraulic jack and the standard section during the lifting process. After one stroke, the top support provides support for the top of the hydraulic jack, allowing the bottom of the hydraulic jack to be lifted another stroke. The addition of a retractable and adjustable short force-bearing square tube inside the steel square tube cavity makes operation more convenient, helps to speed up the project progress, and shortens the construction period.

[0015] 2. This utility model has a locking groove on the inner wall of the steel limiting sleeve. The locking groove is in the shape of a cross. The locking block is fixedly connected to the ends of the short force-bearing square tubes that are far apart from each other. The locking block can be movably locked in the corresponding locking groove, which further limits the short force-bearing square tubes and improves the stability during the lifting process. Compared with the traditional installation method, the force-bearing rod will not fall off unexpectedly.

[0016] 3. In this utility model, the base plate and the bottom support plate are fixedly connected by a first connecting rod. The stability of the device is improved by fixing a reinforcing block in the through hole. Both ends of the steel square tube are movably connected to the short load-bearing square tube. During the adjustment of the short load-bearing square tube, the construction personnel rotate the handwheel, which is fixedly connected to the rotating shaft and has a fixed through gear. Rectangular strips are fixedly connected to the side walls of the two short load-bearing square tubes that are close to each other. The side walls of the rectangular strips that are close to each other are provided with installation cavities. Racks are fixedly installed in the installation cavities. The two racks move and mesh with the gear. The rotation of the gear causes the two racks to push the corresponding short load-bearing square tubes away from each other until the short load-bearing square tubes are pushed into the corresponding steel limiting sleeve cavities and engaged. Rectangular grooves are also provided on the side walls of the two short load-bearing square tubes that are close to each other. The two rectangular grooves are staggered. During the movement of the two short load-bearing square tubes, the racks can be movably engaged in the corresponding rectangular grooves, which facilitates the storage of the two short load-bearing square tubes in the cavity of the steel square tube. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is a three-dimensional structural diagram of the standard section of the lifting frame of this utility model;

[0019] Figure 3 This is a schematic diagram showing the positional relationship between the hydraulic jack, the bottom support, and the top support of this utility model;

[0020] Figure 4 This is a three-dimensional structural diagram of the hydraulic jack, bottom support, and top support of this utility model;

[0021] Figure 5 This is a schematic diagram of the internal structure of the steel square tube of this utility model;

[0022] Figure 6 This is a three-dimensional structural diagram of the steel limiting sleeve of this utility model.

[0023] Legend:

[0024] 10. Standard section of lifting frame; 11. Hydraulic jack; 12. Steel top cap; 13. Bottom support; 14. Top support; 15. Steel vertical rod; 16. Steel horizontal rod; 17. Steel limit sleeve; 18. Top plate; 19. Bottom plate; 20. Bottom support plate; 21. First connecting rod; 22. Reinforcing block; 23. Steel square tube; 24. Short load-bearing square tube; 25. Locking block; 26. Handwheel; 27. Long load-bearing square tube; 28. Top support plate; 29. ​​Second connecting rod; 30. Rectangular strip; 31. Rack; 32. Rotating shaft; 33. Gear; 34. Rectangular groove; 35. Locking groove. Detailed Implementation

[0025] like Figures 1-6 As shown: This utility model provides a hydraulic jacking device for installing a steel space frame, which includes: a standard section 10 of the jacking frame, a hydraulic jack 11, a bottom support 13 and a top support 14.

[0026] The number of standard sections 10 of the lifting frame is multiple. The bottommost standard section 10 of the lifting frame is fixedly installed on the ground. Multiple standard sections 10 of the lifting frame are fixed together by welding. Each standard section 10 of the lifting frame includes multiple steel vertical rods 15 and steel horizontal rods 16. The steel vertical rods 15 are in a vertical state, and the steel horizontal rods 16 are in a horizontal state and fixedly connected between two steel vertical rods 15. Two steel limiting sleeves 17 are welded to the top wall of the steel horizontal rods 16.

[0027] The hydraulic jack 11 is installed in the hollow cavity of the standard section 10 of the lifting frame, so that the standard section 10 of the lifting frame can be installed upward after the hydraulic jack 11 is lifted. The bottom end of the hydraulic jack 11 is fixedly connected to the base plate 19, the telescopic end of the hydraulic jack 11 is fixedly connected to the top plate 18, and the top end of the top plate 18 is fixedly connected to the steel top cap 12.

[0028] The bottom support 13 is positioned between the bottom end of the hydraulic jack 11 and the standard section 10 of the lifting frame to provide limiting support for the bottom support 13. The bottom support 13 includes a bottom support plate 20, two steel square tubes 23, and a handwheel 26. The two steel square tubes 23 are respectively fixed to the bottom sides of the bottom support plate 20. Each steel square tube 23 has two telescopically adjustable short force-bearing square tubes 24 inside its cavity. Two steel limiting sleeves 17, welded and fixed to the top wall of the steel crossbar 16, allow the short force-bearing square tubes 24 to be movably engaged within them, thus limiting and fixing the short force-bearing square tubes 24 and preventing them from sliding. Engaging blocks 25 are fixedly connected to the side walls of the two short force-bearing square tubes 24 that are far apart from each other, and rectangular strips 30 are fixedly connected to the side walls of the two short force-bearing square tubes 24 that are close to each other. The rectangular strips 30 are staggered and not on the same straight line. Each rectangular bar 30 has a mounting cavity on one of its adjacent side walls. A rack 31 is fixedly installed in each cavity, and a gear 33 meshes between the two racks 31. A rotating shaft 32 is fixedly threaded through the axis of the gear 33. The top end of the rotating shaft 32 passes through the steel square tube 23 and the bottom support plate 20 and is fixedly connected to the handwheel 26. The bottom end of the rotating shaft 32 is rotatably mounted on the bottom wall of the cavity of the steel square tube 23. Rectangular grooves 34 are also provided on the adjacent side walls of the two short, force-bearing square tubes 24. The two rectangular grooves 34 are staggered, allowing the racks 31 to engage with the corresponding rectangular grooves 34 during movement, facilitating the storage of the two short, force-bearing square tubes 24 within the cavity of the steel square tube 23.

[0029] The inner wall of the steel limiting sleeve 17 is provided with a locking groove 35, which is in the shape of a cross. The locking block 25, which is fixedly connected to the opposite ends of the short force-bearing square tube 24, can be movably locked in the corresponding locking groove 35, further limiting the short force-bearing square tube 24 and improving the stability during the lifting process. Compared with the traditional installation method, the force-bearing rod will not fall off unexpectedly.

[0030] Specifically, the bottom plate 19 of the hydraulic jack 11 is fixedly connected to the bottom support plate 20 in the bottom support 13 through the first connecting rod 21, and the stability of the device is improved by fixing a reinforcing block 22 in the through hole.

[0031] The top support 14 is located below the top plate 18 to support the top plate 18. The top support 14 includes two long force-bearing square tubes 27 fixedly installed at the bottom of the top plate 18. A top support plate 28 is provided below the two long force-bearing square tubes 27. A second connecting rod 29 is fixedly connected between the top support plate 28 and the long force-bearing square tubes 27. The distance between the two long force-bearing square tubes 27 is less than the distance between the two steel limiting sleeves 17, so that the long force-bearing square tubes 27 can be supported on the steel crossbar 16.

[0032] The working principle of this utility model is as follows: The construction worker rotates the handwheel 26, which is fixedly connected to the rotating shaft 32. The handwheel 26 is fixedly connected to the through gear 33. Rectangular strips 30 are fixedly connected to the side walls of the two short, close-to-each-strip square tubes 24. Each side wall of the rectangular strips 30 has an installation cavity, and a rack 31 is fixedly installed in each cavity. The two racks 31 mesh with the gear 33. The rotation of the gear 33 causes the two racks 31 to push the corresponding short, close-to-each-strip square tubes 24 away from each other until the short, close-to-each-strip square tubes are moved apart. 24. Push the corresponding steel limiting sleeve 17 into the cavity and engage. Then, the hydraulic jack 11 will lift one stroke. The construction personnel will then add the standard section 10 of the lifting frame upwards. The construction personnel will then rotate the handwheel 26 in the opposite direction to retract the short force-bearing square tube 24 into the cavity of the steel square tube 23. After the bottom end of the hydraulic jack 11 has risen one stroke, rotate the handwheel 26 again to engage the short force-bearing square tube 24 into the steel limiting sleeve 17, thereby limiting and fixing the hydraulic jack 11 to form support. This completes one lifting process. Repeat the above operation to carry out the lifting work.

[0033] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A hydraulic jacking device for steel truss installation, characterized by, The utility model relates to a vertical connection's multiple jacking frame standard section, hydraulic jack, bottom support and top support, the jacking frame standard section includes multiple groups of opposite vertical multiple steel vertical poles and multiple steel cross bars, the steel cross bar is fixedly connected between each group of opposite vertical multiple steel vertical poles, the hydraulic jack is arranged in the cavity of vertical connection's multiple jacking frame standard section, the bottom end of hydraulic jack is fixedly connected with bottom plate, the telescopic end of hydraulic jack is fixedly connected with top plate, the bottom support is arranged between the bottom end of hydraulic jack and jacking frame standard section, and the bottom support includes bottom supporting plate, steel square tube and hand wheel, the steel square tube is fixedly connected on both sides of the bottom end of bottom supporting plate, two telescopic adjustable short stress square tubes are arranged in the cavity of steel square tube, the side wall surface of the mutual far side of two short stress square tubes is fixedly connected with the engaging block, the side wall surface of the mutual close side of two short stress square tubes is fixedly connected with rectangular strip, the position of rectangular strip is staggered, the side wall surface of the mutual close side of rectangular strip is provided with mounting cavity, the mounting cavity is fixedly installed with rack, the gear is movably engaged between two racks, the shaft of gear is fixedly penetrated with rotating shaft, the top end of rotating shaft is movably penetrated with steel square tube and bottom supporting plate and is fixedly connected with hand wheel, the bottom end of rotating shaft is rotatably installed on the bottom end wall in the cavity of steel square tube, and the top end of steel cross bar is fixedly provided with two steel limiting sleeves. The top end wall of the steel cross bar is fixedly provided with two steel limiting sleeves.

2. The hydraulic jacking device for steel truss installation according to claim 1, characterized in that: The steel square tube is a through rectangular column.

3. The hydraulic jacking device for steel truss installation according to claim 1, characterized in that: The bottom plate of the hydraulic jack is fixedly connected with the bottom plate of the bottom support, and the through hole is fixedly installed with the reinforcing block.

4. The hydraulic jacking device for steel truss installation according to claim 1, characterized in that: The side wall surface of the mutual close side of two short stress square tubes is further provided with rectangular groove, and the two rectangular grooves are staggered.

5. The hydraulic jacking device for steel truss installation according to claim 1, characterized in that: The top end of the top plate fixedly connected with the telescopic end of the hydraulic jack is fixedly connected with the steel top cap.

6. The hydraulic jacking device for steel truss installation according to claim 1, characterized in that: The long stress square tube is provided with two, and the top plate is arranged below the long stress square tube.

7. The hydraulic jacking device for steel truss installation according to claim 1, characterized in that: The inner wall of the steel limiting sleeve is provided with the engaging groove, and the engaging groove is in the shape of cross.

8. The hydraulic jacking device for steel truss installation according to claim 2, characterized in that: The inner wall of the steel limiting sleeve is provided with the engaging groove, and the engaging groove is in the shape of cross.

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