A roof steel truss sliding anti-overturning device and construction method thereof

Abstract

The present invention discloses a roof steel truss sliding anti-overturning device and a construction method thereof, which belongs to the technical field of building construction, comprises a guide rail arranged on a building, a base is slidably arranged on the guide rail, a driving structure for driving the movement of the guide rail is arranged on the base, a load-bearing seat detachably connected to the steel truss is arranged in the middle of the base, and a clamping structure symmetrically arranged about the load-bearing seat is arranged on the base; the clamping structure comprises an adjusting seat and a clamping plate, both ends of the base are provided with sliding grooves parallel to the guide rail, the adjusting seat is slidably connected to the corresponding sliding groove, and brackets for supporting the corresponding clamping plates are arranged between the adjusting seat and the corresponding clamping plate; a limit pin detachably connected to the sliding groove is arranged on the base; the purpose is to solve the problem that the rigid support connection of the existing steel truss sliding device is easily damaged, the steel truss directly overturns after losing the rigid support, and the anti-overturning function cannot be maintained.

Description

Technical Field

[0001] The invention belongs to the technical field of building construction, and particularly relates to a roof steel truss sliding anti-overturning device and a construction method thereof. Background Art

[0002] With the continuous development of buildings, the size of buildings is also increasing, which makes the span of steel trusses of building roofs larger. Therefore, in the construction process of steel trusses of roofs, the sliding method of separate frames is often used for construction. During the sliding process of steel trusses, they are prone to overturning. The existing steel truss sliding devices often use rigid support to support the steel trusses to prevent them from overturning. However, the rigid support connection is prone to metal fatigue and fracture. After the steel trusses lose rigid support, they overturn directly and cannot maintain the anti-overturning function. Summary of the invention

[0003] In view of this, the present invention discloses a roof steel truss sliding anti-overturning device and a construction method thereof, which aims to solve the problem that the rigid support connection of the existing steel truss sliding device is easily broken due to metal fatigue, and the steel truss directly overturns after losing its rigid support and cannot maintain the anti-overturning function.

[0004] In order to achieve the above object, the present invention provides the following technical solutions:

[0005] A sliding anti-overturning device for a roof steel truss comprises a guide rail arranged on a building, a base is slidably arranged on the guide rail, a driving structure for driving the movement of the guide rail is arranged on the base, a load-bearing seat detachably connected to the steel truss is arranged in the middle of the base, and a clamping structure symmetrically arranged about the load-bearing seat is arranged on the base; the clamping structure comprises an adjusting seat and a clamping plate, both ends of the base are provided with sliding grooves parallel to the guide rail, the adjusting seat is slidably connected to the corresponding sliding groove, and brackets for supporting the corresponding clamping plates are arranged between the adjusting seat and the corresponding clamping plate; the base is provided with a limit pin detachably connected to the sliding groove; mounting seats are detachably connected to both sides of the steel truss, and an energy-absorbing buffer structure arranged obliquely is hinged between the mounting seat and the base.

[0006] In this solution, the steel truss is hoisted on the load-bearing seat, and the steel truss is connected and fixed to the load-bearing seat; then the adjustment seat is slid, and the adjustment seat drives the clamping plate to move synchronously until the clamping plate fits the steel truss, and then the limit pin is installed to fix the adjustment seat; then the energy-absorbing buffer device and the mounting seat are installed on both sides of the steel truss. This solution provides rigid support for the steel truss through the adjustment seat, bracket and clamping plate. When the connection of the adjustment seat breaks due to metal fatigue, the energy-absorbing buffer structure is used to absorb energy and buffer the steel truss, preventing the steel truss from directly overturning and causing impact deformation.

[0007] Furthermore, the energy-absorbing buffer structure includes a cylinder body hinged to the base, a fixing rod is coaxially slidably connected to the cylinder body, and the end of the fixing rod facing the steel truss is coaxially slidably provided with an adjusting rod hinged to the mounting seat, and a positioning pin is detachably connected between the adjusting rod and the fixing rod; the other end of the fixing rod is provided with a hydraulic plate located inside the cylinder body, an overflow hole is provided on the hydraulic plate, and hydraulic oil is sealed in the cylinder body; a plurality of grooves are provided at the end of the cylinder body facing the steel truss, and a plurality of support rods slidably connected to the corresponding grooves are fixed to one end of the adjusting rod facing the cylinder body, and a plurality of positioning holes are provided on the side walls of the support rods, and a plurality of mounting holes connected to the grooves are provided on the circumference of the cylinder body, and an insertion rod is coaxially slidably connected in the mounting hole, the end of the insertion rod is arc-shaped, and an elastic reset member is provided between the insertion rod and the mounting hole.

[0008] In this solution, when the steel truss overturns toward the end of the base, the steel truss drives the fixed rod to move through the mounting seat and the adjusting rod, and then drives the hydraulic plate to move relatively in the cylinder, and uses the work between the hydraulic plate and the hydraulic oil to consume energy, so as to prevent the steel truss from colliding with the ground due to excessive kinetic energy under the action of gravity, resulting in deformation. In this process, the adjusting rod drives the support rod to move synchronously in the groove. When the kinetic energy of the steel truss is large, the support rod squeezes the end of the plug rod through the positioning hole, so that the support rod can move in the groove; when the kinetic energy decreases, the plug rod is kept in the positioning hole under the action of the elastic reset member, limiting the movement of the support rod in the groove, and then providing a certain support force to the steel truss through the adjusting rod and the mounting seat, so as to prevent the steel truss from completely overturning and colliding with the ground.

[0009] Furthermore, storage cavities are provided inside both ends of the base, and pipes are connected between the storage cavities. Sealing plates are slidably connected on both sides of the storage cavities, liquid is stored between the sealing plates, and a pushing structure is provided between the sealing plates and the storage cavities. A controller for controlling the opening and closing of the pushing structure is provided on the base; an infrared rangefinder for detecting the distance between the hydraulic plate and the end of the cylinder is provided at the end of the cylinder facing the steel truss, and the infrared rangefinder is connected to the controller.

[0010] During the overturning process of the steel truss, the infrared rangefinder on the overturning direction side of the steel truss detects that the distance between the corresponding hydraulic plate and the end of the cylinder is constantly decreasing, and transmits the corresponding signal to the controller. The controller controls the pushing structure on the overturning direction side of the steel truss to push the sealing plates to move toward each other, so that the space of the corresponding storage cavity becomes smaller; while the infrared rangefinder on the other side detects that the distance between the corresponding hydraulic plate and the end of the cylinder is constantly increasing, and transmits the corresponding signal to the controller. The pushing structure of the controller pushes the sealing plates to move toward each other, so that the space of the corresponding storage cavity becomes larger. Therefore, the liquid in the storage cavity on the overturning direction side of the steel truss flows to the storage cavity on the other side through the pipeline, so that the center of gravity of the base deviates from the overturning direction of the steel truss, thereby preventing the base from overturning due to unbalanced force.

[0011] Furthermore, a rotating groove with a semicircular longitudinal section is provided in the middle of the base, and a plurality of coaxial and arc-shaped movable grooves are provided on the side wall of the rotating groove, and the longitudinal section of the movable groove is T-shaped; the load-bearing seat is arranged in the rotating groove, and the load-bearing seat is adapted to the shape of the rotating groove, and a movable block adapted to the shape of the movable groove and slidably connected is provided at the bottom of the load-bearing seat, and a plurality of limiting holes parallel to the rotating groove are evenly distributed on the movable block; a plurality of plug-in grooves with the load-bearing seat as the center are provided on the circumference of the side wall of the base, and plug-in rods matching the limiting holes are detachably connected in the plug-in grooves; a hydraulic energy absorber is vertically arranged at the bottom of the movable groove, and a plurality of accommodating grooves for accommodating the output end of the hydraulic energy absorber are provided on the outer surface of the movable block, and the edges of the accommodating grooves are arc-shaped.

[0012] During the overturning process of the steel truss, the steel truss drives the load-bearing seat to shear the connecting rod to break it, thereby driving the load-bearing seat to rotate in the rotating groove, and the load-bearing seat drives the movable block to move synchronously. During the rotation of the movable block, it continuously squeezes the output end of the hydraulic energy absorber through the accommodating groove, thereby playing a role in auxiliary energy consumption; at the same time, the load-bearing seat can deflect synchronously with the steel truss, and can also maintain the connection strength between the load-bearing seat and the steel truss to ensure the stability of the steel truss, while also avoiding shearing at the connection between the steel truss and the load-bearing seat, resulting in damage to the end of the steel truss; when the steel truss is stationary, the broken connecting rod is taken out and a new connecting rod is reinstalled to play a role in temporary support of the steel truss.

[0013] Furthermore, a locking hole is vertically opened on the middle side wall of the insertion rod, and a locking rod is arranged in the locking hole.

[0014] Furthermore, a sealing ring is provided on the peripheral side of the sealing plate.

[0015] A construction method for a roof steel truss sliding anti-overturning device comprises the following steps:

[0016] 1) Install the anti-overturning device: install and fix the guide rail on the top of the building and place the base; keep the top end surface of the load-bearing seat horizontal, insert the plug rod into the plug slot and pass it through the limit hole;

[0017] 2) Hoisting the steel truss: Use the lifting equipment to hoist the steel truss onto the load-bearing seat, and connect and fix the steel truss to the load-bearing seat; slide the adjustment seat until the clamping plate fits the steel truss, and then install the limit pin;

[0018] 3) Install the energy dissipation buffer structure: pull out the plug rod to expose the locking hole of the cylinder, and install the locking rod to prevent the plug rod from being inserted into the positioning hole; then remove the positioning pin, slide the adjustment rod and swing the cylinder at the same time until the mounting seat and the steel truss are against each other, and fix the mounting seat and the steel truss, reset the positioning pin and remove the locking rod at the same time, and the plug rod is inserted into the positioning hole of the support rod under the action of the elastic reset member;

[0019] 4) Sliding of steel trusses: synchronously start the driving structure, which drives the corresponding base to move the steel trusses until the steel trusses slide into place;

[0020] 5) Anti-overturning trigger: When the steel truss is subjected to unbalanced force, the steel truss squeezes the clamping plate, causing the limit pin to break, which in turn causes the steel truss to overturn toward the end of the base; at this time, the steel truss drives the fixed rod to move through the mounting seat and the adjusting rod, and then drives the hydraulic plate to move relatively in the cylinder, thereby playing the role of energy consumption;

[0021] In this process, the adjusting rod drives the support rod to move synchronously in the groove. When the kinetic energy of the steel truss is large, the support rod squeezes the end of the insertion rod through the positioning hole, so that the support rod can move in the groove; when the kinetic energy decreases, the insertion rod is kept in the positioning hole under the action of the elastic reset member, limiting the movement of the support rod in the groove, and then providing a certain support force to the steel truss through the adjusting rod and the mounting seat;

[0022] In addition, the steel truss drives the load-bearing seat to shear the splicing rod to break it, thereby driving the load-bearing seat to rotate in the rotating groove, and the load-bearing seat drives the movable block to move synchronously. During the rotation of the movable block, the output end of the hydraulic energy absorber is continuously squeezed through the accommodating groove, thereby playing a role in auxiliary energy consumption; when the steel truss is stationary, the broken splicing rod is taken out and a new splicing rod is reinstalled to play a role in temporary support of the steel truss;

[0023] At the same time, the infrared rangefinder on the overturning direction side of the steel truss detects that the distance between the corresponding hydraulic plate and the end of the cylinder is constantly decreasing, and transmits the corresponding signal to the controller. The controller controls the pushing structure on the overturning direction side of the steel truss to push the sealing plates to move toward each other, so that the space of the corresponding storage cavity becomes smaller; while the infrared rangefinder on the other side detects that the distance between the corresponding hydraulic plate and the end of the cylinder is constantly increasing, and transmits the corresponding signal to the controller. The pushing structure of the controller pushes the sealing plates to move toward each other, so that the space of the corresponding storage cavity becomes larger. Therefore, the liquid in the storage cavity on the overturning direction side of the steel truss flows to the storage cavity on the other side through the pipeline, so that the center of gravity of the base deviates from the overturning direction of the steel truss, thereby preventing the base from overturning due to unbalanced force.

[0024] Other advantages, objectives and features of the present invention will be described in the following description and will be apparent to those skilled in the art to some extent, or those skilled in the art may be taught from the practice of the present invention. The objectives and other advantages of the present invention may be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to make the purpose, technical solution and beneficial effects of the present invention clearer, the present invention provides the following drawings for illustration:

[0026] Figure 1 It is a structural schematic diagram of an embodiment of the present invention;

[0027] Figure 2 for Figure 1 The enlarged schematic diagram of point A in the middle;

[0028] Figure 3 is a longitudinal cross-sectional view of an anti-overturning device in an embodiment of the present invention;

[0029] Figure 4 for Figure 3 The enlarged schematic diagram of point B in the middle;

[0030] Figure 5 It is a transverse cross-sectional view of the base in an embodiment of the present invention.

[0031] The markings in the accompanying drawings are as follows: guide rail 1, base 2, load-bearing seat 3, adjustment seat 4, bracket 5, clamping plate 6, mounting seat 7, cylinder 8, fixing rod 9, adjusting rod 10, hydraulic plate 11, overflow hole 12, support rod 13, plug rod 14, elastic reset member 15, pipeline 16, sealing plate 17, pushing structure 18, movable block 19, limiting hole 20, plug-in rod 21, hydraulic energy absorber 22, accommodating groove 23, steel truss 24, locking hole 25. DETAILED DESCRIPTION

[0032] like Figures 1 to 5 As shown:

[0033] A sliding anti-overturning device for a roof steel truss 24 comprises a guide rail 1 arranged on a building, a base 2 is slidably arranged on the guide rail 1, a driving structure for driving the movement thereof is arranged on the base 2 (motor drive is adopted in this embodiment, which is a conventional technical means, so it is not drawn in the figure), a load-bearing seat 3 detachably connected to the steel truss 24 is arranged in the middle part of the base 2, and a clamping structure symmetrically arranged about the load-bearing seat 3 is arranged on the base 2; the clamping structure comprises an adjusting seat 4 and a clamping plate 6, both ends of the base 2 are provided with a slide groove parallel to the guide rail 1, the adjusting seat 4 is slidably connected to the corresponding slide groove, and a bracket 5 for supporting the corresponding clamping plate 6 is arranged between the adjusting seat 4 and the corresponding clamping plate 6; a limit pin detachably connected to the slide groove is arranged on the base 2 (conventional technical means, so it is not drawn in the figure); mounting seats 7 are detachably connected to both sides of the steel truss 24, and an energy-absorbing buffer structure arranged obliquely is hinged between the mounting seat 7 and the base 2.

[0034] In this solution, the steel truss 24 is hoisted on the load-bearing seat 3, and the steel truss 24 is connected and fixed to the load-bearing seat 3; then the adjustment seat 4 is slid, and the adjustment seat 4 drives the clamping plate 6 to move synchronously until the clamping plate 6 fits with the steel truss 24, and then the limit pin is installed to fix the adjustment seat 4; then the energy dissipation buffer device and the mounting seat 7 are installed on both sides of the steel truss 24. In this solution, the adjustment seat 4, the bracket 5 and the clamping plate 6 play a rigid support role for the steel truss 24. When the connection of the adjustment seat 4 breaks due to metal fatigue, the energy dissipation buffer structure plays an energy dissipation buffer role for the steel truss 24, preventing the steel truss 24 from directly overturning and causing impact deformation.

[0035] In this embodiment, the energy dissipation buffer structure includes a cylinder 8 hinged to the base 2, a fixed rod 9 is coaxially slidably connected in the cylinder 8, and the end of the fixed rod 9 facing the steel truss 24 is coaxially slidably provided with an adjusting rod 10 hinged to the mounting seat 7, and a positioning pin is detachably connected between the adjusting rod 10 and the fixed rod 9; the other end of the fixed rod 9 is provided with a hydraulic plate 11 located inside the cylinder 8, and an overflow hole 12 is provided on the hydraulic plate 11, and hydraulic oil is sealed in the cylinder 8; a plurality of grooves are provided at the end of the cylinder 8 facing the steel truss 24, and a plurality of support rods 13 slidably connected to the corresponding grooves are fixed to one end of the adjusting rod 10 facing the cylinder 8, and a plurality of positioning holes are provided on the side walls of the support rods 13, and a plurality of mounting holes connected to the grooves are provided on the periphery of the cylinder 8, and a plug rod 14 is coaxially slidably connected in the mounting hole, and the end of the plug rod 14 is arc-shaped, and an elastic reset member 15 is provided between the plug rod 14 and the mounting hole.

[0036] In this solution, when the steel truss 24 overturns toward the end of the base 2, the steel truss 24 drives the fixed rod 9 to move through the mounting seat 7 and the adjusting rod 10, and then drives the hydraulic plate 11 to move relatively in the cylinder 8, and uses the work between the hydraulic plate 11 and the hydraulic oil to consume energy, so as to prevent the steel truss 24 from being deformed by colliding with the ground due to excessive kinetic energy under the action of gravity. In this process, the adjusting rod 10 drives the support rod 13 to move synchronously in the groove. When the kinetic energy of the steel truss 24 is large, the support rod 13 squeezes the end of the plug rod 14 through the positioning hole, so that the support rod 13 can move in the groove; when the kinetic energy decreases, the plug rod 14 is kept in the positioning hole under the action of the elastic reset member 15, limiting the movement of the support rod 13 in the groove, and then provides a certain support force to the steel truss 24 through the adjusting rod 10 and the mounting seat 7, so as to prevent the steel truss 24 from completely overturning and colliding with the ground.

[0037] In this embodiment, storage cavities are provided inside both ends of the base 2, and pipes 16 are connected between the storage cavities. Sealing plates 17 are slidably connected on both sides of the storage cavities. Liquid is stored between the sealing plates 17, and a pushing structure 18 is provided between the sealing plates 17 and the storage cavities. A controller for controlling the opening and closing of the pushing structure 18 is provided on the base 2; an infrared rangefinder for detecting the distance between the hydraulic plate 11 and the end of the cylinder 8 is provided at the end of the cylinder 8 facing the steel truss 24, and the infrared rangefinder is connected to the controller (the infrared rangefinder and the controller are conventional technical means of those skilled in the art, so they are not drawn in the figure).

[0038] During the overturning process of the steel truss 24, the infrared rangefinder on the overturning direction side of the steel truss 24 detects that the distance between the corresponding hydraulic plate 11 and the end of the cylinder 8 is constantly decreasing, and transmits the corresponding signal to the controller. The controller controls the pushing structure 18 on the overturning direction side of the steel truss 24 to push the sealing plate 17 to move toward each other, so that the space of the corresponding storage cavity becomes smaller; while the infrared rangefinder on the other side detects that the distance between the corresponding hydraulic plate 11 and the end of the cylinder 8 is constantly increasing, and transmits the corresponding signal to the controller. The pushing structure 18 of the controller pushes the sealing plate 17 to move toward each other, so that the space of the corresponding storage cavity becomes larger. Therefore, the liquid in the storage cavity on the overturning direction side of the steel truss 24 flows to the storage cavity on the other side through the pipeline 16, so that the center of gravity of the base 2 deviates from the overturning direction of the steel truss 24, thereby preventing the base 2 from overturning due to unbalanced force.

[0039] In this embodiment, a rotating groove with a semicircular longitudinal section is provided in the middle of the base 2, and a plurality of coaxial and arc-shaped movable grooves are provided on the side wall of the rotating groove, and the longitudinal section of the movable groove is T-shaped; the load-bearing seat 3 is arranged in the rotating groove, and the load-bearing seat 3 is adapted to the shape of the rotating groove, and a movable block 19 adapted to the shape of the movable groove and slidably connected is provided at the bottom of the load-bearing seat 3, and a plurality of limiting holes 20 parallel to the rotating groove are evenly distributed on the movable block 19; a plurality of plug-in grooves with the load-bearing seat 3 as the center are provided on the circumference of the side wall of the base 2, and a plug-in rod 21 cooperating with the limiting hole 20 is detachably connected in the plug-in groove; a hydraulic energy absorber 22 is vertically provided at the bottom of the movable groove, and a plurality of accommodating grooves 23 for accommodating the output end of the hydraulic energy absorber 22 are provided on the outer surface of the movable block 19, and the edges of the accommodating grooves 23 are arc-shaped.

[0040] During the overturning process of the steel truss 24, the steel truss 24 drives the load-bearing seat 3 to shear the connecting rod 21 to break it, thereby driving the load-bearing seat 3 to rotate in the rotating groove, and the load-bearing seat 3 drives the movable block 19 to move synchronously. During the rotation of the movable block 19, the output end of the hydraulic energy absorber 22 is continuously squeezed through the accommodating groove 23, thereby playing a role in auxiliary energy consumption; at the same time, the load-bearing seat 3 can deflect synchronously with the steel truss 24, and can also maintain the connection strength between the load-bearing seat 3 and the steel truss 24 to ensure the stability of the steel truss 24, while also avoiding shearing at the connection between the steel truss 24 and the load-bearing seat 3, resulting in damage to the end of the steel truss 24; when the steel truss 24 is stationary, the broken connecting rod 21 is taken out and a new connecting rod 21 is reinstalled to play a role in temporarily supporting the steel truss 24.

[0041] In this embodiment, a locking hole 25 is vertically opened on the middle side wall of the insertion rod 14, and a locking rod is arranged in the locking hole 25 (conventional technical means, so it is not drawn in the figure).

[0042] When adjusting the fixed rod 9 and the movable rod, the insertion rod 14 is pulled outward to expose the locking hole 25 from the cylinder 8, and the locking rod is installed to prevent the insertion rod 14 from being inserted into the positioning hole.

[0043] In this embodiment, a sealing ring is provided on the peripheral side of the sealing plate 17 .

[0044] By providing a sealing ring, the sealing performance of the sealing plate 17 is enhanced to prevent liquid leakage.

[0045] A construction method of a sliding anti-overturning device for a roof steel truss 24 comprises the following steps:

[0046] 1) Install the anti-overturning device: install and fix the guide rail 1 on the top of the building, and place the base 2; keep the top end surface of the load-bearing seat 3 horizontal, insert the plug rod 21 into the plug slot and pass it through the limit hole 20;

[0047] 2) Hoisting the steel truss 24: hoist the steel truss 24 onto the load-bearing seat 3 by means of a lifting device, and connect and fix the steel truss 24 to the load-bearing seat 3 by means of bolts; slide the adjustment seat 4 until the clamping plate 6 fits the steel truss 24, and then install the limit pin;

[0048] 3) Install the energy dissipation buffer structure: pull out the plug rod 14 to expose the locking hole 25 from the cylinder 8, and install the locking rod to prevent the plug rod 14 from being inserted into the positioning hole; then remove the positioning pin, slide the adjustment rod 10 and swing the cylinder 8 until the mounting seat 7 and the steel truss 24 are against each other, and fix the mounting seat 7 and the steel truss 24 with bolts, reset the positioning pin and remove the locking rod, and the plug rod 14 is inserted into the positioning hole of the support rod 13 under the action of the elastic reset member 15;

[0049] 4) Sliding of the steel truss 24: Synchronously start the driving structure, which drives the corresponding base 2 to move the steel truss 24 until the steel truss 24 slides into place;

[0050] 5) Anti-overturning trigger: When the steel truss 24 is subjected to unbalanced force, the steel truss 24 squeezes the clamping plate 6, causing the limit pin to break, thereby causing the steel truss 24 to overturn toward the end of the base 2; at this time, the steel truss 24 drives the fixing rod 9 to move through the mounting seat 7 and the adjusting rod 10, thereby driving the hydraulic plate 11 to move relatively in the cylinder 8, thereby playing the role of energy consumption;

[0051] In this process, the adjusting rod 10 drives the support rod 13 to move synchronously in the groove. When the kinetic energy of the steel truss 24 is large, the support rod 13 squeezes the end of the insertion rod 14 through the positioning hole, so that the support rod 13 can move in the groove; when the kinetic energy decreases, the insertion rod 14 is kept in the positioning hole under the action of the elastic reset member 15, limiting the movement of the support rod 13 in the groove, and then providing a certain support force to the steel truss 24 through the adjusting rod 10 and the mounting seat 7;

[0052] In addition, the steel truss 24 drives the bearing seat 3 to shear the plug-in rod 21 to break it, thereby driving the bearing seat 3 to rotate in the rotating groove, and the bearing seat 3 drives the movable block 19 to move synchronously. During the rotation process of the movable block 19, the output end of the hydraulic energy absorber 22 is continuously squeezed through the accommodating groove 23, thereby playing a role in auxiliary energy consumption; when the steel truss 24 is stationary, the broken plug-in rod 21 is taken out and a new plug-in rod 21 is reinstalled to play a role in temporary support for the steel truss 24;

[0053] At the same time, the infrared rangefinder on the overturning direction side of the steel truss 24 detects that the distance between the corresponding hydraulic plate 11 and the end of the cylinder 8 is constantly decreasing, and transmits the corresponding signal to the controller. The controller controls the pushing structure 18 on the overturning direction side of the steel truss 24 to push the sealing plate 17 to move toward each other, so that the space of the corresponding storage cavity becomes smaller; while the infrared rangefinder on the other side detects that the distance between the corresponding hydraulic plate 11 and the end of the cylinder 8 is constantly increasing, and transmits the corresponding signal to the controller. The pushing structure 18 of the controller pushes the sealing plate 17 to move toward each other, so that the space of the corresponding storage cavity becomes larger. Therefore, the liquid in the storage cavity on the overturning direction side of the steel truss 24 flows to the storage cavity on the other side through the pipeline 16, so that the center of gravity of the base 2 deviates from the overturning direction of the steel truss 24, thereby preventing the base 2 from overturning due to unbalanced force.

[0054] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the present invention.

Claims

1. A roof steel truss sliding anti-overturning device, comprising a guide rail arranged on a building, Features: The guide rail is slidably provided with a base, and the base is provided with a driving structure for driving the movement thereof, and a load-bearing seat detachably connected to the steel truss is provided in the middle of the base, and a clamping structure symmetrically arranged about the load-bearing seat is provided on the base; the clamping structure includes an adjusting seat and a clamping plate, both ends of the base are provided with slide grooves parallel to the guide rail, the adjusting seat is slidably connected to the corresponding slide groove, and brackets for supporting the corresponding clamping plates are provided between the adjusting seat and the corresponding clamping plate; a limit pin detachably connected to the slide groove is provided on the base; mounting seats are detachably connected to both sides of the steel truss, and an energy-dissipating buffer structure inclinedly arranged is hingedly connected to the mounting seat and the base; the energy-dissipating buffer structure includes a cylinder hinged to the base. A fixing rod is coaxially slidably connected in the cylinder, and an adjusting rod hinged to the mounting seat is coaxially slidably provided at the end of the fixing rod facing the steel truss, and a positioning pin is detachably connected between the adjusting rod and the fixing rod; a hydraulic plate located inside the cylinder is provided at the other end of the fixing rod, an overflow hole is provided on the hydraulic plate, and hydraulic oil is sealed in the cylinder; a plurality of grooves are provided at the end of the cylinder facing the steel truss, and a plurality of support rods slidably connected to the corresponding grooves are fixed at one end of the adjusting rod facing the cylinder, and a plurality of positioning holes are provided on the side walls of the support rods, and a plurality of mounting holes connected to the grooves are provided on the circumference of the cylinder, and an insertion rod is coaxially slidably connected in the mounting hole, the end of the insertion rod is arc-shaped, and an elastic reset member is provided between the insertion rod and the mounting hole.

2. A roof steel truss sliding anti-overturning device according to claim 1, Features: Storage cavities are provided inside both ends of the base, and pipes are connected between the storage cavities. Sealing plates are slidably connected on both sides of the storage cavities. Liquid is stored between the sealing plates. A pushing structure is provided between the sealing plates and the storage cavities. A controller for controlling the opening and closing of the pushing structure is provided on the base; an infrared rangefinder for detecting the distance between the hydraulic plate and the end of the cylinder is provided at the end of the cylinder facing the steel truss, and the infrared rangefinder is connected to the controller.

3. A roof steel truss sliding anti-overturning device according to claim 2, Features: A rotating groove with a semicircular longitudinal section is provided in the middle of the base, and a plurality of coaxial and arc-shaped movable grooves are provided on the side wall of the rotating groove, and the longitudinal section of the movable groove is T-shaped; the load-bearing seat is arranged in the rotating groove, and the load-bearing seat is adapted to the shape of the rotating groove, and a movable block adapted to the shape of the movable groove and slidably connected is provided at the bottom of the load-bearing seat, and a plurality of limiting holes parallel to the rotating groove are evenly distributed on the movable block; a plurality of plug-in grooves with the load-bearing seat as the center are provided on the circumference of the side wall of the base, and plug-in rods matching the limiting holes are detachably connected in the plug-in grooves; a hydraulic energy absorber is vertically arranged at the bottom of the movable groove, and a plurality of accommodating grooves for accommodating the output end of the hydraulic energy absorber are provided on the outer surface of the movable block, and the edges of the accommodating grooves are treated in an arc shape.

4. A roof steel truss sliding anti-overturning device according to claim 3, Features: The middle side walls of the insertion rods are vertically provided with locking holes, and locking rods are arranged in the locking holes.

5. A roof steel truss sliding anti-overturning device according to claim 4, Features: A sealing ring is arranged on the peripheral side of the sealing plate.

6. A construction method for a roof steel truss sliding anti-overturning device according to claim 5, It is characterized in that The steps include: 1) Install the anti-overturning device: install and fix the guide rail on the top of the building and place the base; keep the top end surface of the load-bearing seat horizontal, insert the plug rod into the plug slot and pass it through the limit hole; 2) Hoisting the steel truss: Use the lifting equipment to hoist the steel truss onto the load-bearing seat, and connect and fix the steel truss to the load-bearing seat; slide the adjustment seat until the clamping plate fits the steel truss, and then install the limit pin; 3) Install the energy dissipation buffer structure: pull out the plug rod to expose the locking hole of the cylinder, and install the locking rod to prevent the plug rod from being inserted into the positioning hole; then remove the positioning pin, slide the adjustment rod and swing the cylinder at the same time until the mounting seat and the steel truss are against each other, and fix the mounting seat and the steel truss, reset the positioning pin and remove the locking rod at the same time, and the plug rod is inserted into the positioning hole of the support rod under the action of the elastic reset member; 4) Sliding of steel trusses: synchronously start the driving structure, which drives the corresponding base to move the steel trusses until the steel trusses slide into place; 5) Anti-overturning trigger: When the steel truss is subjected to unbalanced force, the steel truss squeezes the clamping plate, causing the limit pin to break, which in turn causes the steel truss to overturn toward the end of the base; at this time, the steel truss drives the fixed rod to move through the mounting seat and the adjusting rod, and then drives the hydraulic plate to move relatively in the cylinder, thereby playing the role of energy consumption; In this process, the adjusting rod drives the support rod to move synchronously in the groove. When the kinetic energy of the steel truss is large, the support rod squeezes the end of the insertion rod through the positioning hole, so that the support rod can move in the groove; when the kinetic energy decreases, the insertion rod is kept in the positioning hole under the action of the elastic reset member, limiting the movement of the support rod in the groove, and then providing a certain support force to the steel truss through the adjusting rod and the mounting seat; In addition, the steel truss drives the load-bearing seat to shear the splicing rod to break it, thereby driving the load-bearing seat to rotate in the rotating groove, and the load-bearing seat drives the movable block to move synchronously. During the rotation of the movable block, the output end of the hydraulic energy absorber is continuously squeezed through the accommodating groove, thereby playing a role in auxiliary energy consumption; when the steel truss is stationary, the broken splicing rod is taken out and a new splicing rod is reinstalled to play a role in temporary support of the steel truss; At the same time, the infrared rangefinder on the overturning direction side of the steel truss detects that the distance between the corresponding hydraulic plate and the end of the cylinder is constantly decreasing, and transmits the corresponding signal to the controller. The controller controls the pushing structure on the overturning direction side of the steel truss to push the sealing plates to move toward each other, so that the space of the corresponding storage cavity becomes smaller; while the infrared rangefinder on the other side detects that the distance between the corresponding hydraulic plate and the end of the cylinder is constantly increasing, and transmits the corresponding signal to the controller. The pushing structure of the controller pushes the sealing plates to move toward each other, so that the space of the corresponding storage cavity becomes larger. Therefore, the liquid in the storage cavity on the overturning direction side of the steel truss flows to the storage cavity on the other side through the pipeline, so that the center of gravity of the base deviates from the overturning direction of the steel truss, thereby preventing the base from overturning due to unbalanced force.

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