Steel structure net rack installation jacking device and method thereof

Abstract

The invention discloses a steel structure net rack installation jacking device and a method thereof, and belongs to the technical field of engineering construction. The steel structure net rack mounting and jacking device comprises a clamp used for clamping a net rack, and further comprises a mounting plate provided with an upper sliding groove and a lower sliding groove in the vertical direction; the upper sliding plate is slidably connected into the upper sliding groove, and the clamp is arranged on the upper sliding plate; the upper clamping mechanism is used for clamping a stand column for supporting the net rack; the lower sliding plate is slidably connected into the lower sliding groove; the lower clamping mechanism is used for clamping the stand column; the telescopic mechanism is connected with the upper sliding plate and the lower sliding plate and used for driving the upper sliding plate and the lower sliding plate to get close to each other or get away from each other. According to the steel structure net rack mounting and jacking device and method, enough supporting force can be provided for the net rack, and due to the fact that the stand columns do not have the connection error problem, shaking or deflection of the net rack in the jacking process can be restrained, and the stability and safety of the net rack in the jacking process are improved.

Description

Technical Field

[0001] The invention relates to the technical field of engineering construction, and in particular to a steel structure grid installation jacking device and a method thereof. Background Art

[0002] Steel structure grid is often used as the roof of buildings such as gymnasiums, waiting halls and theaters because of its advantages of light weight, high rigidity and low cost. It is a structure composed of multiple rods connected in a certain grid form. When constructing a steel structure grid building, according to the design plan, multiple columns supporting the grid are often built on the site first, and then the grid is lifted to the top of the column by a jacking device, and the column is used to support the grid.

[0003] The existing grid installation jacking device has core components including a jacking mechanism and multiple layers of temporary supports. When the grid is jacked up, the grid is fixed on the jacking mechanism, and then the jacking mechanism is used to lift the grid. Then, a layer of temporary supports is used to support the grid. Then, the jacking mechanism is fixed to the top of the temporary supports. Then, the grid is jacked up again. Then, another layer of temporary supports is set up on the top of the temporary supports. The above operations are repeated to finally realize the jacking of the grid into place.

[0004] When the above-mentioned jacking device is lifting the grid, it is necessary to continuously set up temporary supports as the grid is lifted. Setting up temporary supports is not only time-consuming and labor-intensive, but also when the grid is lifted to a high height, too many layers of temporary supports need to be set up, and the bending stiffness will be significantly reduced. In addition, there will be connection errors between each layer of temporary supports and adjacent temporary supports, which will increase the tendency of multiple layers of temporary supports to shake or deflect when subjected to grid pressure, affecting the stability and safety of the grid lifting process. Summary of the invention

[0005] The purpose of the present invention is to overcome the problems in the prior art and to provide a steel structure grid installation jacking device and method thereof, which can suppress the shaking or deflection of the grid during the jacking process and improve the stability and safety of the grid jacking process.

[0006] The present invention provides a steel structure grid installation jacking device, comprising a clamp, the clamp is used to clamp the grid, and further comprises:

[0007] The mounting plate is provided with an upper slide groove and a lower slide groove in a vertical direction;

[0008] An upper slide plate is slidably connected in the upper slide groove, and the clamp is arranged on the upper slide plate;

[0009] An upper clamping mechanism is provided on the upper slide plate, and is used to clamp the columns supporting the grid;

[0010] A lower slide plate, slidably connected in the lower slide groove;

[0011] A lower clamping mechanism, disposed on the lower sliding plate, and used for clamping the column;

[0012] The telescopic mechanism is connected to both the upper slide plate and the lower slide plate, and is used to drive the upper slide plate and the lower slide plate to move closer to or away from each other.

[0013] Preferably, the telescopic mechanism includes a cylinder body, an upper slider and a lower slider, the cylinder body is vertically arranged on the mounting plate, the upper slider and the lower slider are slidably connected to the inner cavity of the cylinder body, the upper slider is connected to the upper slider, the lower slider is connected to the lower slider, and the inner cavity of the cylinder body between the upper slider and the lower slider is connected to a hydraulic control circuit.

[0014] Preferably, the upper clamping mechanism and the lower clamping mechanism have the same structure, both including a top block, a connecting rod, a pressure block and a driving mechanism, the top block abuts against one side wall of the column, the upper slide plate or the lower slide plate is provided with a first sliding hole, the connecting rod is slidably connected to the first sliding hole, one end of the connecting rod is connected to the pressure block, the pressure block is clamped on the other side wall of the column opposite to the top block, the driving mechanism is connected to the other end of the connecting rod, the driving mechanism is used to drive the connecting rod to move, thereby driving the pressure block to approach or move away from the top block, the top block of the upper clamping mechanism is arranged on the upper slide plate, and the top block of the lower clamping mechanism is arranged on the lower slide plate.

[0015] Preferably, the driving mechanism includes a hydraulic piston and a wedge block, a vertical sliding cavity is provided in the upper sliding block and the lower sliding block, the hydraulic piston is slidably connected to the sliding cavity, the sliding cavity is communicated with the hydraulic control circuit, the wedge block is connected to the hydraulic piston, and a stopper is fixedly connected to the end of the connecting rod away from the pressure block, the wedge block abuts against the stopper, and when the wedge block moves to the side away from the sliding cavity, under the action of the wedge block, the stopper drives the pressure block to move to the side close to the top block through the connecting rod.

[0016] Preferably, a retaining ring is provided on the side wall of the connecting rod, and a first spring is provided outside the connecting rod, one end of the first spring abuts against the upper slide plate or the lower slide plate, and the other end of the first spring abuts against the retaining ring, and the first spring is used to apply an elastic force to the connecting rod along the length direction of the connecting rod, and under the action of the elastic force of the first spring, the stop block is pressed against the wedge surface of the wedge block.

[0017] Preferably, the upper slide plate or the lower slide plate is provided with a second slide hole parallel to the first slide hole, the second slide hole is slidably connected with a slide rod, a second spring is provided outside the slide rod, one end of the second spring abuts against the top block, and the other end of the second spring abuts against the upper slide plate or the lower slide plate, and the second spring is used to apply an elastic force to the top block toward the direction of the pressing block.

[0018] Preferably, a guard bar is further provided on the mounting plate, a roller is pivotally connected to the guard bar, and the roller abuts against a side wall of the column opposite to the mounting plate.

[0019] Preferably, the roller is connected to a ratchet, the guard rod is pivotally connected to a pawl, a coil spring is provided at the pivot connection between the pawl and the guard rod, the coil spring is used to apply elastic force to the pawl, under the action of the elastic force of the coil spring, the pawl is clamped on the ratchet, and under the action of the ratchet and the pawl, the roller can only roll upward on the column.

[0020] Preferably, the cylinder body is detachably connected to the mounting plate.

[0021] The present invention also provides a method for lifting a steel structure grid using a steel structure grid installation lifting device, comprising the following steps:

[0022] A lifting device is installed on each column supporting the grid, each lifting device corresponds to a fulcrum of the grid, and the fulcrum of the grid is clamped by the clamp of the lifting device. Initially, the distance between the upper slide plate and the lower slide plate of each lifting device is the smallest;

[0023] Control the upper clamping mechanism of each jacking device to release, and control the lower clamping mechanism of each jacking device to clamp the column, and then control the telescopic mechanism of each jacking device to extend, and use the telescopic mechanism to drive the upper slide plate and the lower slide plate to move away from each other. Under the drive of the telescopic mechanism, the upper slide plate and the mounting plate move upward relative to the lower slide plate;

[0024] When the telescopic mechanism drives the upper slide plate to move to the maximum distance between the upper slide plate and the lower slide plate, the upper clamping mechanism is controlled to clamp, and the lower clamping mechanism is controlled to release, and then the telescopic mechanism is controlled to contract, and the upper slide plate and the lower slide plate are driven to approach each other by the telescopic mechanism. Under the drive of the telescopic mechanism, the mounting plate and the lower slide plate move upward relative to the upper slide plate;

[0025] Until the distance between the upper slide plate and the lower slide plate is shortened to the minimum, this process is repeated to continuously and synchronously lift the grid.

[0026] Compared with the prior art, the beneficial effects of the present invention are as follows: a steel structure grid installation lifting device of the present invention utilizes the clamp of the lifting device to clamp the fulcrum of the grid, first controls the upper clamping mechanism of each lifting device to release, and controls the lower clamping mechanism of each lifting device to clamp the column, and then controls the telescopic mechanism of each lifting device to extend, under the drive of the telescopic mechanism, the upper slide plate and the mounting plate move upward relative to the lower slide plate, when the telescopic mechanism drives the upper slide plate to move to the maximum spacing with the lower slide plate, controls the upper clamping mechanism to clamp, and controls the lower clamping mechanism to release, and then controls the telescopic mechanism to contract, under the drive of the telescopic mechanism, the mounting plate and the lower slide plate move upward relative to the upper slide plate, and so on and so forth, can continuously and synchronously lift the grid, utilizes multiple columns supporting the grid as the supporting base to lift the grid, can provide sufficient supporting force for the grid, and because there is no connection error problem in the columns, can suppress the shaking or deflection of the grid during the lifting process, and improve the stability and safety of the grid lifting process.

[0027] Driven by the telescopic mechanism of the device, the upper slide plate and the lower slide plate move closer to or farther from each other, and combined with the guiding effect of the upper slide groove and the lower slide groove of the mounting plate, the stability of the grid when being lifted can be improved, thereby effectively suppressing the shaking of the grid 1 during the lifting process. When the upper clamping mechanism or the lower clamping mechanism of the device clamps the column, under the extrusion of the pressure block and the top block, the upper clamping mechanism or the lower clamping mechanism can be firmly fixed on the column, which can prevent the upper clamping mechanism or the lower clamping mechanism from slipping off the column, and more effectively prevent the grid from shaking or deflecting during the lifting. By setting a guard bar, when the mounting plate tends to deflect, the mounting plate applies a horizontal extrusion force to the column through the guard bar and the roller, and the column applies a supporting force opposite to the extrusion force to the roller, thereby preventing the mounting plate from deflecting and preventing the grid from tipping over during the lifting, further ensuring the stability and safety of the grid lifting. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the structure of the present invention when it is working;

[0029] Figure 2 It is a schematic diagram of the internal structure of the present invention;

[0030] Figure 3 It is a schematic diagram of the main structure of the present invention;

[0031] Figure 4 It is a schematic diagram of the cross-sectional structure of the AA surface of the present invention;

[0032] Figure 5 It is a schematic diagram of the cross-sectional structure of the BB surface of the present invention;

[0033] Figure 6 It is a structural schematic diagram of the sliding rod of the present invention.

[0034] Description of reference numerals:

[0035] 1. Grid, 101. Clamp, 102. Mounting plate, 103. Upper slide, 104. Lower slide, 105. Upper slide, 106. Upper clamping mechanism, 107. Lower slide, 108. Lower clamping mechanism, 109. Column, 110. Telescopic mechanism, 201. Cylinder, 202. Upper slider, 203. Lower slider, 301. Top block, 302. Connecting rod, 303. Pressing block, 304. Driving mechanism, 401. Hydraulic piston, 402. Wedge block, 403. Sliding cavity, 404. Block, 501. Retaining ring, 502. First spring, 601. Sliding rod, 602. Second spring, 701. Guard bar, 702. Roller, 801. Ratchet, 802. Ratchet, 803. Coil spring. DETAILED DESCRIPTION

[0036] The following is combined with Figure 1-Figure 6 , the specific implementation of the present invention is described in detail, but it should be understood that the protection scope of the present invention is not limited by the specific implementation. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0037] like Figure 1-Figure 6 As shown, the steel structure grid installation jacking device provided by the present invention includes a clamp 101, the clamp 101 is used to clamp the grid 1, and also includes: a mounting plate 102, an upper slide plate 105, an upper clamping mechanism 106, a lower slide plate 107, a lower clamping mechanism 108 and a telescopic mechanism 110, the mounting plate 102 is provided with an upper slide groove 103 and a lower slide groove 104 in a vertical direction; the upper slide plate 105 is slidably connected in the upper slide groove 103, and the clamp 101 is arranged on the upper slide plate 105; the upper clamping mechanism 110 06 is arranged on the upper slide 105, and the upper clamping mechanism 106 is used to clamp the column 109 supporting the grid frame 1; the lower slide 107 is slidably connected in the lower slide groove 104; the lower clamping mechanism 108 is arranged on the lower slide 107, and the lower clamping mechanism 108 is used to clamp the column 109; the telescopic mechanism 110 is connected to both the upper slide 105 and the lower slide 107, and the telescopic mechanism 110 is used to drive the upper slide 105 and the lower slide 107 to move closer to or away from each other.

[0038] The working principle of the above embodiment is briefly described:

[0039] When the device is in use, a jacking device is installed on each column 109 supporting the grid frame 1, and each jacking device corresponds to a fulcrum of the grid frame 1. The fulcrum of the grid frame 1 is clamped by the clamp 101 of the jacking device. Initially, the distance between the upper slide plate 105 and the lower slide plate 107 is the smallest, the upper clamping mechanism 106 is controlled to be loosened, and the lower clamping mechanism 108 is controlled to clamp the column 109, and then the telescopic mechanism 110 is controlled to extend, and the telescopic mechanism 110 is used to drive the upper slide plate 105 and the lower slide plate 107 to move away from each other, because the lower slide plate 107 is clamped to the column 109 by the lower clamping mechanism 108. On the column 109, therefore, driven by the telescopic mechanism 110, the upper slide 105 and the mounting plate 102 move upward relative to the lower slide 107, the lower slide groove 104 guides the movement of the mounting plate 102 relative to the lower slide 107, and the upper slide groove 103 guides the movement of the upper slide 105 relative to the mounting plate 102, thereby ensuring that the upper slide 105 can stably lift the fulcrum on the grid 1 through the clamp 101, and at the same time control the action of the telescopic mechanism 110 of each lifting device, which can ensure the synchronization of the lifting of each fulcrum on the grid 1, thereby ensuring the stability of the lifting of the entire grid 1. When the telescopic mechanism 110 drives the upper slide 105 to move to the maximum distance between it and the lower slide 107, the upper clamping mechanism 106 is controlled to clamp, and the lower clamping mechanism 108 is controlled to loosen, and then the telescopic mechanism 110 is controlled to contract, and the telescopic mechanism 110 is used to drive the upper slide 105 and the lower slide 107 to approach each other. Because the upper slide 105 is clamped on the column 109 by the upper clamping mechanism 106, therefore, under the drive of the telescopic mechanism 110, the mounting plate 102 and the lower slide 107 move upward relative to the upper slide 105, the upper slide groove 103 guides the movement of the mounting plate 102 relative to the upper slide 105, and the lower slide groove 104 guides the movement of the lower slide 107 relative to the mounting plate 102, thereby driving the lower clamping mechanism 108 to move upward stably until the distance between the upper slide 105 and the lower slide 107 is shortened to the minimum, and this reciprocating process can continuously and automatically lift the grid 1 synchronously. Since the plurality of columns 109 are designed to provide sufficient supporting force to the grid 1, using the plurality of columns 109 as a supporting base to lift the grid 1 can prevent the grid 1 from shaking or deflecting when being lifted.

[0040] The steel structure grid installation jacking device of the present invention can use multiple columns 109 supporting the grid 1 as a supporting base to jack up the grid 1, and can provide sufficient supporting force for the grid 1. Moreover, since there is no connection error problem among the columns 109, it can prevent the grid 1 from shaking or deflecting during jacking, thereby ensuring the stability and safety of the jacking process of the grid 1.

[0041] As a preferred solution, Figure 1 , Figure 2 and Figure 5As shown, the telescopic mechanism 110 includes a cylinder body 201, an upper slider 202 and a lower slider 203. The cylinder body 201 is vertically arranged on the mounting plate 102. The upper slider 202 and the lower slider 203 are slidably connected to the inner cavity of the cylinder body 201. The upper slider 202 is connected to the upper slider 105, and the lower slider 203 is connected to the lower slider 107. The inner cavity of the cylinder body 201 located between the upper slider 202 and the lower slider 203 is connected to a hydraulic control circuit. When the telescopic mechanism 110 drives the upper slide 105 and the lower slide 107 to move away from each other, the hydraulic control circuit is controlled to pass hydraulic oil into the inner cavity of the cylinder 201, and the hydraulic oil in the inner cavity of the cylinder 201 drives the upper slider 202 and the lower slider 203 to move away from each other. Since the upper slider 202 is connected to the upper slide 105, and the lower slider 203 is connected to the lower slide 107, the upper slider 105 and the lower slide 107 can be driven by the upper slider 202 and the lower slider 203 to move away from each other; when the telescopic mechanism 110 drives the upper slide 105 and the lower slide 107 to move closer to each other, the hydraulic control circuit is controlled to pass hydraulic oil into the inner cavity of the cylinder 201, and the hydraulic oil in the inner cavity of the cylinder 201 drives the upper slider 202 and the lower slider 203 to move away from each other. Hydraulic oil is extracted from the inner cavity of the cylinder 201, thereby reducing the hydraulic pressure in the inner cavity of the cylinder 201. Driven by the hydraulic oil in the inner cavity of the cylinder 201, the upper slider 202 and the lower slider 203 approach each other, thereby enabling the upper slide plate 105 and the lower slide plate 107 to approach each other. Driven by the telescopic mechanism 110 of the device, the upper slide plate 105 and the lower slide plate 107 approach each other or move away from each other. Combined with the guiding effect of the upper slide groove 103 and the lower slide groove 104 of the mounting plate 102, the stability of the grid 1 when being lifted can be improved, thereby effectively suppressing the shaking of the grid 1 during the lifting process.

[0042] On the basis of the above embodiments, in order to prevent the upper clamping mechanism 106 or the lower clamping mechanism 108 from slipping off the column 109 when the grid frame 1 is lifted, it is more effective to prevent the grid frame 1 from shaking or deflecting when it is lifted.

[0043] like Figure 1-Figure 6 As shown, the upper clamping mechanism 106 and the lower clamping mechanism 108 have the same structure, both of which include a top block 301, a connecting rod 302, a pressing block 303 and a driving mechanism 304, the top block 301 abuts against a side wall of the column 109, the upper slide plate 105 or the lower slide plate 107 is provided with a first sliding hole, the connecting rod 302 is slidably connected in the first sliding hole, one end of the connecting rod 302 is connected to the pressing block 303, the pressing block 303 is clamped on the other side wall of the column 109 opposite to the top block 301, the driving mechanism 304 is connected to the other end of the connecting rod 302, the driving mechanism 304 is used to drive the connecting rod 302 to move, thereby driving the pressing block 303 to approach or move away from the top block 301, the top block 301 of the upper clamping mechanism 106 is provided on the upper slide plate 105, and the top block 301 of the lower clamping mechanism 108 is provided on the lower slide plate 107.

[0044] When the upper clamping mechanism 106 or the lower clamping mechanism 108 clamps the column 109, the driving mechanism 304 is controlled to move, and the driving mechanism 304 drives the pressing block 303 to move toward the direction close to the top block 301 through the connecting rod 302. Since the top block 301 abuts against one side wall of the column 109, under the drive of the driving mechanism 304, the pressing block 303 is clamped on the other side wall of the column 109 opposite to the top block 301. Under the squeezing of the pressing block 303 and the top block 301, the upper clamping mechanism 106 or the lower clamping mechanism 108 can be firmly fixed on the column 109, thereby preventing the upper clamping mechanism 106 or the lower clamping mechanism 108 from slipping off the column 109 when the grid frame 1 is lifted, and more effectively preventing the grid frame 1 from shaking or deflecting when it is lifted.

[0045] As a preferred solution, Figure 1-Figure 6 As shown, the driving mechanism 304 includes a hydraulic piston 401 and a wedge block 402, a vertical sliding cavity 403 is provided in the upper slider 202 and the lower slider 203, the hydraulic piston 401 is slidably connected to the sliding cavity 403, the sliding cavity 403 is communicated with the hydraulic control circuit, the wedge block 402 is connected to the hydraulic piston 401, and a stopper 404 is fixedly connected to the end of the connecting rod 302 away from the pressure block 303, the wedge block 402 abuts against the stopper 404, when the wedge block 402 moves to the side away from the sliding cavity 403, under the action of the wedge block 402, the stopper 404 drives the pressure block 303 to move toward the side close to the top block 301 through the connecting rod 302. When the upper clamping mechanism 106 or the lower clamping mechanism 108 clamps the column 109, hydraulic oil is filled into the sliding cavity 403 through the hydraulic control circuit, and the hydraulic oil in the sliding cavity 403 drives the hydraulic piston 401 to move out of the sliding cavity 403, and the hydraulic piston 401 drives the connecting rod 302 to move away from the sliding cavity 403, thereby driving the wedge block 402 to move away from the sliding cavity 403, and the wedge surface of the wedge block 402 drives the stopper 404 to move, and the stopper 404 drives the pressure block 303 to move toward the side close to the top block 301 through the connecting rod 302, so that the column 109 is clamped by the pressure block 303 and the top block 301.

[0046] As a preferred solution, Figure 2-Figure 6As shown, a retaining ring 501 is provided on the side wall of the connecting rod 302, and a first spring 502 is provided outside the connecting rod 302, one end of the first spring 502 abuts against the upper slide plate 105 or the lower slide plate 107, and the other end of the first spring 502 abuts against the retaining ring 501. The first spring 502 is used to apply an elastic force along the length direction of the connecting rod 302 to the connecting rod 302. Under the action of the elastic force of the first spring 502, the stopper 404 is pressed against the wedge surface of the wedge block 402. By providing the retaining ring 501, when the wedge block 402 drives the stopper 404 to move, the stopper 404 drives the connecting rod 302 to move, and the connecting rod 302 squeezes the first spring 502 through the retaining ring 501. The elastic force applied by the first spring 502 to the retaining ring 501 drives the stopper 404 to press against the wedge surface of the wedge block 402, thereby ensuring the normal operation of the upper clamping mechanism 106 or the lower clamping mechanism 108.

[0047] As a preferred solution, Figure 1-Figure 6 As shown, the upper slide plate 105 or the lower slide plate 107 is provided with a second slide hole parallel to the first slide hole, a slide rod 601 is slidably connected in the second slide hole, a second spring 602 is provided outside the slide rod 601, one end of the second spring 602 abuts against the top block 301, and the other end of the second spring 602 abuts against the upper slide plate 105 or the lower slide plate 107, and the second spring 602 is used to apply an elastic force to the top block 301 in the direction of the pressing block 303. When the pressure block 303 applies an extrusion force toward the pressure block 303 to the column 109, the column 109 will squeeze the top block 301, and the top block 301 moves in the direction away from the pressure block 303, thereby driving the slide bar 601 to slide in the second slide hole, and the distance between the top block 301 and the mounting plate 102 is reduced, so that the second spring 602 is squeezed, and the elastic force applied by the second spring 602 to the top block 301 drives the top block 301 to be pressed against the column 109. Under the action of the elastic force of the second spring 602, it can ensure that the top block 301 is always in contact with the column 109, thereby preventing the top block 301 from sliding on the column 109 during the process of clamping the upper clamping mechanism 106 or the lower clamping mechanism 108, thereby ensuring the normal operation of the upper clamping mechanism 106 or the lower clamping mechanism 108.

[0048] As a preferred solution, Figure 1-Figure 5As shown, the mounting plate 102 is further provided with a guard bar 701, and a roller 702 is pivotally connected to the guard bar 701, and the roller 702 abuts against a side wall of the column 109 opposite to the mounting plate 102. By providing the guard bar 701, the guard bar 701 abuts against a side wall of the column 109 opposite to the mounting plate 102 through the roller 702. When the mounting plate 102 tends to deflect, the mounting plate 102 applies a horizontal squeezing force to the column 109 through the guard bar 701 and the roller 702, and the column 109 applies a supporting force opposite to the squeezing force to the roller 702, thereby preventing the mounting plate 102 from deflecting and preventing the grid frame 1 from tipping over during jacking, thereby further ensuring the stability and safety of the grid frame 1 during jacking.

[0049] As a preferred solution, Figure 3-Figure 5 As shown, the roller 702 is connected to a ratchet 801, the guard rod 701 is pivotally connected to a pawl 802, a coil spring 803 is provided at the pivot connection between the pawl 802 and the guard rod 701, the coil spring 803 is used to apply an elastic force to the pawl 802, under the action of the elastic force of the coil spring 803, the pawl 802 is clamped on the ratchet 801, under the action of the ratchet 801 and the pawl 802, the roller 702 can only roll upward on the column 109. By setting the ratchet 801 and the pawl 802, under the action of the elastic force of the coil spring 803, the pawl 802 is clamped on the ratchet 801. When the mounting plate 102 lifts the grid frame 1 and moves upward through the upper slide plate 105, the mounting plate 102 drives the roller 702 to roll on the column 109 through the guard bar 701, and the ratchet 801 rotates forward relative to the pawl 802. When the mounting plate 102 tends to slide downward due to insufficient clamping force of the upper clamping mechanism 106 or the lower clamping mechanism 108, that is, when the roller 702 tends to roll downward on the column 109, the ratchet 801 tends to move in the opposite direction relative to the pawl 802. The pawl 802 can limit the rotation of the ratchet 801 to prevent the lifting device from slipping off the column 109 when lifting the grid frame 1, thereby further ensuring the stability and safety of the lifting of the grid frame 1.

[0050] As a preferred solution, Figure 1 and Figure 2 As shown, the cylinder body 201 is detachably connected to the mounting plate 102. The cylinder body 201 and the mounting plate 102 are detachably connected, which can facilitate the disassembly and installation of the mounting plate 102, thereby facilitating the maintenance of the entire device.

[0051] The present invention also provides a method for lifting a steel structure grid using a steel structure grid installation lifting device and method thereof, comprising the following steps:

[0052] A lifting device is installed on each column 109 supporting the grid 1. Each lifting device corresponds to a fulcrum of the grid 1. The fulcrum of the grid 1 is clamped by the clamp 101 of the lifting device. Initially, the distance between the upper slide 105 and the lower slide 107 of each lifting device is the smallest.

[0053] Control the upper clamping mechanism 106 of each jacking device to release, and control the lower clamping mechanism 108 of each jacking device to clamp the column 109, and then control the telescopic mechanism 110 of each jacking device to extend, and use the telescopic mechanism 110 to drive the upper slide plate 105 and the lower slide plate 107 away from each other. Under the drive of the telescopic mechanism 110, the upper slide plate 105 and the mounting plate 102 move upward relative to the lower slide plate 107;

[0054] When the telescopic mechanism 110 drives the upper slide plate 105 to move to the maximum distance between the upper slide plate 105 and the lower slide plate 107, the upper clamping mechanism 106 is controlled to clamp, and the lower clamping mechanism 108 is controlled to loosen, and then the telescopic mechanism 110 is controlled to contract, and the telescopic mechanism 110 is used to drive the upper slide plate 105 and the lower slide plate 107 to approach each other. Under the drive of the telescopic mechanism 110, the mounting plate 102 and the lower slide plate 107 move upward relative to the upper slide plate 105;

[0055] This process is repeated until the distance between the upper slide plate 105 and the lower slide plate 107 is shortened to a minimum, so as to continuously and synchronously lift the grid 1.

[0056] While the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations can be made to the embodiments without departing from the principles and spirit of the invention.

Claims

1. A steel structure grid installation jacking device, comprising a clamp (101), wherein the clamp (101) is used to clamp the grid (1), and is characterized in that: Also includes: The mounting plate (102) is provided with an upper slide groove (103) and a lower slide groove (104) in a vertical direction; An upper slide plate (105) is slidably connected to the upper slide groove (103), and the clamp (101) is arranged on the upper slide plate (105); An upper clamping mechanism (106) is arranged on the upper slide plate (105), and the upper clamping mechanism (106) is used to clamp the columns (109) supporting the grid frame (1); A lower slide plate (107) is slidably connected in the lower slide groove (104); A lower clamping mechanism (108) is disposed on the lower slide plate (107), and the lower clamping mechanism (108) is used to clamp the column (109); The telescopic mechanism (110) is connected to both the upper slide plate (105) and the lower slide plate (107), and the telescopic mechanism (110) is used to drive the upper slide plate (105) and the lower slide plate (107) to move closer to each other or farther away from each other.

2. The steel structure grid installation jacking device according to claim 1, characterized in that: The telescopic mechanism (110) comprises a cylinder body (201), an upper slider (202) and a lower slider (203); the cylinder body (201) is vertically arranged on the mounting plate (102); the upper slider (202) and the lower slider (203) are slidably connected to the inner cavity of the cylinder body (201); the upper slider (202) is connected to the upper slide plate (105); the lower slider (203) is connected to the lower slide plate (107); and the inner cavity of the cylinder body (201) located between the upper slider (202) and the lower slider (203) is connected to a hydraulic control circuit.

3. The steel structure grid installation jacking device according to claim 2, characterized in that: The upper clamping mechanism (106) and the lower clamping mechanism (108) have the same structure, and both include a top block (301), a connecting rod (302), a pressing block (303) and a driving mechanism (304); the top block (301) is in contact with a side wall of the column (109); a first sliding hole is provided on the upper slide plate (105) or the lower slide plate (107); the connecting rod (302) is slidably connected to the first sliding hole; one end of the connecting rod (302) is connected to the pressing block (303); the pressing block (303) The driving mechanism (304) is connected to the other end of the connecting rod (302) and is used to drive the connecting rod (302) to move, thereby driving the pressing block (303) to move closer to or away from the top block (301). The top block (301) of the upper clamping mechanism (106) is arranged on the upper slide plate (105), and the top block (301) of the lower clamping mechanism (108) is arranged on the lower slide plate (107).

4. The steel structure grid installation jacking device according to claim 3, characterized in that: The driving mechanism (304) comprises a hydraulic piston (401) and a wedge block (402). A vertical sliding cavity (403) is provided in the upper sliding block (202) and the lower sliding block (203). The hydraulic piston (401) is slidably connected to the sliding cavity (403). The sliding cavity (403) is communicated with the hydraulic control circuit. The wedge block (402) is connected to the hydraulic piston (401). A stopper (404) is fixedly connected to one end of the connecting rod (302) away from the pressing block (303). The wedge block (402) abuts against the stopper (404). When the wedge block (402) moves to the side away from the sliding cavity (403), under the action of the wedge block (402), the stopper (404) drives the pressing block (303) to move to the side close to the top block (301) through the connecting rod (302).

5. The steel structure grid installation jacking device according to claim 4, characterized in that: A retaining ring (501) is provided on the side wall of the connecting rod (302), and a first spring (502) is provided outside the connecting rod (302). One end of the first spring (502) abuts against the upper slide plate (105) or the lower slide plate (107), and the other end of the first spring (502) abuts against the retaining ring (501). The first spring (502) is used to apply an elastic force along the length direction of the connecting rod (302) to the connecting rod (302). Under the action of the elastic force of the first spring (502), the stop block (404) is pressed against the wedge surface of the wedge block (402).

6. The steel structure grid installation jacking device according to claim 1, characterized in that: The upper slide plate (105) or the lower slide plate (107) is provided with a second slide hole parallel to the first slide hole, a slide rod (601) is slidably connected in the second slide hole, a second spring (602) is provided outside the slide rod (601), one end of the second spring (602) is in contact with the top block (301), and the other end of the second spring (602) is in contact with the upper slide plate (105) or the lower slide plate (107), and the second spring (602) is used to apply an elastic force to the top block (301) in the direction of the pressing block (303).

7. The steel structure grid installation jacking device according to claim 1, characterized in that: The mounting plate (102) is also provided with a guard bar (701), and a roller (702) is pivotally connected to the guard bar (701), and the roller (702) abuts against a side wall of the column (109) opposite to the mounting plate (102).

8. The steel structure grid installation jacking device according to claim 7, characterized in that: The roller (702) is connected to a ratchet (801), and the guard rod (701) is pivotally connected to a pawl (802). A coil spring (803) is provided at the pivotal connection between the pawl (802) and the guard rod (701). The coil spring (803) is used to apply an elastic force to the pawl (802). Under the action of the elastic force of the coil spring (803), the pawl (802) is clamped on the ratchet (801). Under the action of the ratchet (801) and the pawl (802), the roller (702) can only roll upward on the column (109).

9. The steel structure grid installation jacking device according to claim 2, characterized in that: The cylinder body (201) is detachably connected to the mounting plate (102).

10. A method for lifting a steel structure grid using the steel structure grid installation lifting device according to claim 1, characterized in that: The following steps are involved: A lifting device is installed on each column (109) supporting the grid (1), each lifting device corresponds to a fulcrum of the grid (1), and the fulcrum of the grid (1) is clamped by a clamp (101) of the lifting device. Initially, the distance between the upper slide plate (105) and the lower slide plate (107) of each lifting device is the smallest; Control the upper clamping mechanism (106) of each jacking device to release, and control the lower clamping mechanism (108) of each jacking device to clamp the column (109), then control the telescopic mechanism (110) of each jacking device to extend, and use the telescopic mechanism (110) to drive the upper slide plate (105) and the lower slide plate (107) to move away from each other, and under the drive of the telescopic mechanism (110), the upper slide plate (105) and the mounting plate (102) move upward relative to the lower slide plate (107); When the telescopic mechanism (110) drives the upper slide plate (105) to move to the maximum distance between the upper slide plate (105) and the lower slide plate (107), the upper clamping mechanism (106) is controlled to clamp, and the lower clamping mechanism (108) is controlled to loosen, and then the telescopic mechanism (110) is controlled to contract, and the telescopic mechanism (110) is used to drive the upper slide plate (105) and the lower slide plate (107) to approach each other. Under the drive of the telescopic mechanism (110), the mounting plate (102) and the lower slide plate (107) move upward relative to the upper slide plate (105); This process is repeated until the distance between the upper slide plate (105) and the lower slide plate (107) is shortened to a minimum, thereby continuously and synchronously lifting the grid frame (1).

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