A method for removing steel support under half cover

Abstract

The invention discloses a method for removing a steel support under a half-cover plate, which is based on an auxiliary tool for removing the steel support under the half-cover plate. The tool comprises: a support frame; a steel support fixing device, which is arranged above the support frame, fixedly connected to the support frame, and arranged on the side of a working platform, comprising: a sliding seat, which is fixedly arranged on the top of the support frame, and a track is arranged on the top of the sliding seat; a clamping part, which is slidably connected to the sliding seat track, and comprises a left clamping plate and a right clamping plate symmetrically arranged at both ends of the track; a fixing piece, which is arranged on the clamping part and is used to pull the left clamping plate and the right clamping plate to slide relative to each other on the track; the steel support is clamped by the steel support fixing device, and the movement of the steel support under the half-cover plate is achieved by the moving device and the vertical telescopic device, only a small number of personnel are required to cooperate with a crane to complete the lifting of the steel support under the half-cover plate, which saves labor and time, is convenient and safe to use, reduces the occupation of the working space, and reduces the safety hazards of personnel at work.

Description

Technical Field

[0001] The invention relates to the field of building construction, and in particular to a method for dismantling steel supports under a half cover plate. Background Art

[0002] In traditional construction, the removal of steel supports under the half-cover slab currently uses two large cranes to cooperate in lifting. Or a support platform is set up to lift it out in multiple sections. At the same time, forklifts and other tools are needed to remove the supports under the half-cover slab, which requires a lot of manpower and mechanical tools, resulting in increased construction costs and affecting on-site operation efficiency. It is also a waste of resources and does not meet green construction standards. The use of multiple large tools directly affects the on-site construction space, making material transportation difficult and personnel obstructed. The on-site operation risks are huge. The removal of supports under the half-cover slab has the hidden danger of supports falling off, which can easily injure construction workers and is inconsistent with the current safety situation. Frequent erection of support frames will increase the intensity of work on site. At the same time, there is a certain risk of falling from the height involved in the high-altitude operations involved in the scaffolding erection process. Summary of the Invention

[0003] Purpose of the invention: In order to overcome the deficiencies in the prior art, the present invention provides a method for dismantling the steel support under a half-cover plate, wherein the steel support is fastened by a steel support fixing device, and the steel support is moved out by a moving device and a vertical telescopic device, thereby ensuring the safe and efficient dismantling of the steel support under the half-cover plate, saving manpower, and ensuring on-site construction safety.

[0004] Technical solution: To achieve the above purpose, the technical solution adopted by the present invention is: a method for removing the steel support under the half cover plate, based on the auxiliary tool for removing the steel support under the half cover plate, comprising:

[0005] A support frame is provided with a working platform on the top and a moving device at the bottom, and the support frame is also provided with a vertical telescopic device;

[0006] The steel support fixing device is arranged above the support frame, fixedly connected to the support frame, and arranged on the side of the working platform, including:

[0007] The sliding seat is fixedly arranged on the top of the support frame, and a track perpendicular to the axis of the steel support is arranged on the top of the sliding seat;

[0008] The clamping part is slidably connected to the sliding seat through a track, and includes a left clamping plate and a right clamping plate symmetrically arranged at both ends of the track. The left clamping plate and the right clamping plate slide relative to each other on the track to limit the clamping wall, which is used to fasten the steel support;

[0009] A fixing member is provided on the clamping portion and is used to pull the left clamping plate and the right clamping plate to slide relative to each other on the track;

[0010] An arc-shaped clamping wall is provided in the clamping part, and the clamping part includes a first clamping part and a second clamping part. The inner diameter of the clamping wall of the first clamping part is d1, and the inner diameter of the clamping wall of the second clamping part is d2, d1>d2, and two groups of the first clamping part and the second clamping part are arranged on the track at intervals.

[0011] The following steps are involved:

[0012] S1: Place two dismantling auxiliary tools along the axis of the steel support and move them to the ends of the steel support on both sides;

[0013] S2: Open the left and right splints to the two ends of the sliding seat through the fixing parts;

[0014] S3: Start the vertical telescopic device, lift the steel support fixture evenly, and control the lifting speed so that the steel support falls smoothly on the sliding seat;

[0015] S4: The operator on the working platform tightens the left and right clamping plates of the clamping part through the fixing parts to tighten the clamping wall to the steel support;

[0016] S5: After both steel supports on both sides are fixed in the clamping parts, the vertical telescopic device is activated to evenly lift the steel support fixing device until the movable end of the steel support leaves the steel purlin and is separated from the top surface of the connecting beam;

[0017] S6: Start the moving device to move the steel support horizontally away from under the half cover and send it to the operating range of the crane wire rope;

[0018] S7: Use crane to lift steel support for operation.

[0019] As a preferred embodiment of the present invention: the fixing member includes:

[0020] Rollers, fixedly arranged on the corners of the splint;

[0021] A pull belt is arranged on the outside of the roller and on the outer surface of the splint along the direction of the track. One end is fixed to the splint on one side adjacent to the working platform by a buckle, and the other end extends freely from the top of the splint on the other side. The splint is driven to move on the track by pulling the pull belt at the other end.

[0022] As a preferred embodiment of the present invention, the sliding seat is an I-beam assembly, comprising:

[0023] The main rib of the I-beam is fixedly arranged on the top of the support frame;

[0024] The I-beam secondary ribs are fixedly connected to the tops of the I-beam main ribs, and a plurality of the I-beam secondary ribs are arranged in parallel and equidistantly, and the tops of two of the I-beam secondary ribs form a track.

[0025] As a preferred embodiment of the present invention: the clamping part is slidably connected to the sliding seat through a movable pair, the movable pair is a clamp slidably connected to the track, the clamp is arranged on a side wing plate of the secondary rib of the I-beam, and the outer edge of the clamp extends out of the wing plate, and a limiting hole is provided on the extended clamp, and the bolt passes through the limiting hole; each group of the clamps is provided with two front clamps and two rear clamps, which are respectively welded to the four corners of the bottom of the clamping part.

[0026] As a preferred embodiment of the present invention: the two limit baffles are symmetrically arranged along the vertical center line of the secondary web of the I-beam, namely the front limit baffle and the rear limit baffle, and the distance between the limit baffles is the combined length of the left clamping plate and the right clamping plate.

[0027] As a preferred embodiment of the present invention: the cross section of the clamping wall of the left clamping plate and the right clamping plate is a semicircular arc equal to the radius of the steel support.

[0028] As a preferred embodiment of the present invention: diagonal braces and horizontal braces are provided between the support rods of the support frame, and the support frame is fixedly supported by the diagonal braces and the horizontal braces.

[0029] As a preferred embodiment of the present invention: the moving device is a universal pulley set arranged at the bottom of the support frame, and the vertical telescopic device is a hydraulic cylinder telescopic support arranged above the pulley.

[0030] As a preferred embodiment of the present invention: a guardrail is provided on the outer side of the working platform.

[0031] As a preferred embodiment of the present invention: Step 4 specifically includes: the operator manually pushes the right splint close to the work platform on the work platform, and the left splint away from the work platform is driven to move by pulling the pull belt set on the top of the left splint. After the left splint and the right splint tighten the steel support, the pull belt is fixed in the buckle on the right splint.

[0032] Compared with the prior art, the present invention has the following beneficial effects:

[0033] 1. The steel support is clamped by the steel support fixing device, and the steel support is moved under the half cover by the moving device and the vertical telescopic device. Only a small number of people are needed to cooperate with the crane to complete the lifting of the steel support under the half cover, which saves labor and time, is convenient and safe to use, reduces the occupation of the working space, and reduces the safety hazards of personnel during work.

[0034] 2. The clamps set between the splint and the I-beam are connected by sliding, and the splint is pulled by the pull belt to slide relatively on the I-beam track to clamp the steel support, which simplifies the complex operation of clamping the existing steel support. Only a small number of people are needed to complete the work. In addition, the use of two sets of fixing devices reduces the safety hazard of the steel support slipping.

[0035] 3. By setting splints of different diameters on the sliding seat, it can be applied to the dismantling operation of the currently mainstream half-cover steel support, so that there is no need to frequently replace different splints during operation, saving time and effort and improving work efficiency.

[0036] 4. The arc-shaped rubber inner wall is set on the splint to increase the contact area and friction force when clamping the steel support, which has a better clamping and tightening effect on the steel support.

[0037] 5. By installing protective railings on the outside of the working platform, people working on the platform are prevented from falling and their safety is ensured.

[0038] 6. Through the universal pulley set at the bottom of the support frame and the hydraulic cylinder telescopic support set on the pulley, the entire support can complete the horizontal movement and vertical lifting of the fixing device and the working platform. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 This is a structural diagram of the auxiliary tool for removing the steel support under the half cover;

[0040] Figure 2 This is a structural diagram of the steel support fixture;

[0041] Figure 3 It is a partial structural diagram of the sliding seat;

[0042] Figure 4 This is a schematic diagram of continuing to lift after the steel support is fixed;

[0043] Figure 5 Schematic diagram of horizontally movable steel support;

[0044] Figure 6 Schematic diagram of using a crane to lift the steel support.

[0045] The accompanying drawings are marked as follows: 1 is the first clamping part; 2 is the second clamping part; 3 is the secondary rib of the I-beam; 4 is the main rib of the I-beam; 5 is the moving pair; 6 is the rear limit baffle; 7 is the front limit baffle; 8 is the guardrail; 9 is the working platform; 10 is the diagonal brace; 11 is the horizontal brace; 12 is the support frame; 13 is the vertical telescopic device; 14 is the moving device, 15 is the buckle; 16 is the pull strap, 17 is the clamping wall, 18 is the roller, 19 is the front clamp; 20 is the rear clamp, and 21 is the bolt. DETAILED DESCRIPTION

[0046] The present invention is further illustrated below with reference to the accompanying drawings and specific embodiments. It should be understood that these examples are only used to illustrate the present invention and are not used to limit the scope of the present invention. After reading the present invention, modifications of various equivalent forms of the present invention made by those skilled in the art all fall within the scope defined by the claims attached to this application.

[0047] A method for removing steel supports under a half-cover plate, based on an auxiliary tool for removing steel supports under a half-cover plate, comprising:

[0048] A support frame 12 is provided with a working platform 9 on the top and a moving device 14 at the bottom, and a vertical telescopic device 13 is also provided on the support frame 12;

[0049] The steel support fixing device is arranged above the support frame 12, fixedly connected to the support frame 12, and arranged on the side of the working platform 9, including:

[0050] The sliding seat is fixedly arranged on the top of the support frame 12, and a track perpendicular to the axis of the steel support is arranged on the top of the sliding seat;

[0051] The clamping part is connected to the sliding seat through a track, and includes a left clamping plate and a right clamping plate symmetrically arranged at both ends of the track. The left clamping plate and the right clamping plate slide relative to each other on the track to limit the clamping wall 17, which is used to fasten the steel support;

[0052] A fixing member is provided on the clamping portion and is used to pull the left clamping plate and the right clamping plate to slide relative to each other on the track;

[0053] An arc-shaped clamping wall is provided in the clamping part, and the clamping part includes a first clamping part and a second clamping part. The inner diameter of the clamping wall of the first clamping part is d1, and the inner diameter of the clamping wall of the second clamping part is d2, d1>d2, and two groups of the first clamping part and the second clamping part are arranged on the track at intervals.

[0054] It is characterized in that it includes the following steps:

[0055] S1: Place two dismantling auxiliary tools along the axis of the steel support and move them to the ends of the steel support on both sides;

[0056] S2: Open the left and right splints to the two ends of the sliding seat through the fixing parts;

[0057] S3: Start the vertical telescopic device 13, the steel support fixing device is lifted evenly, and the lifting speed is controlled so that the steel support falls smoothly on the sliding seat;

[0058] S4: The operator on the working platform 9 tightens the left and right clamping plates of the clamping part through the fixing parts, so that the clamping wall 17 is tightened to the steel support;

[0059] S5: After the steel supports on both sides are fixed in the clamping parts, the vertical telescopic device 13 is activated to evenly lift the steel support fixing device until the movable end of the steel support leaves the steel purlin and is separated from the top surface of the connecting beam;

[0060] S6: Start the moving device 14 to move the steel support horizontally away from under the half cover and send it to the operating range of the crane wire rope;

[0061] S7: Use crane to lift steel support for operation.

[0062] Example 1

[0063] like Figure 1 The figure shows the auxiliary tool for removing the steel support under the half cover in this embodiment. The support frame 12 adopts a truss structure including columns, horizontal braces 11 and diagonal braces 10. The stability of the support frame 12 is maintained by connecting the various components.

[0064] The moving device 14 is provided at the bottom of the support frame 12 and is a universal pulley set with a built-in brake device. Each pulley is provided at the bottom end of the column, and the pulley size can be changed according to the specific conditions on site;

[0065] The vertical telescopic device 13 is arranged above the moving device 14 and is composed of a telescopic support using a hydraulic cylinder and a hydraulic telescopic arm. The height of the frame is adjusted by adjusting the stroke of the cylinder. The model and stroke of the cylinder can be adjusted according to the specific conditions on site.

[0066] A working platform 9 is provided on the top of the support frame 12 and is provided with a guardrail 8 on the outside, the bottom end of the guardrail 8 is fixedly connected to the top end of the column;

[0067] The steel support fixture is arranged above the support frame 12 and located on one side of the working platform 9, and includes:

[0068] The sliding seat is arranged on the support frame 12, including an I-beam main rib 4 and an I-beam secondary rib 3. The two I-beam main ribs 4 are arranged on both sides of the top of the support frame 12, and the I-beam secondary rib 3 is vertically arranged on the top of the I-beam main rib 4. The two I-beam secondary ribs 3 form a track, and the front limit baffle 7 and the rear limit baffle 6 are symmetrically arranged along the vertical center line on the web of the secondary rib I-beam. The two sides below the bracket are connected to the upper flange of the secondary rib through a plywood. Below the secondary rib is the I-beam main rib 4 of the bracket system, and the main rib is welded and fixed to the lower column;

[0069] The clamping part is slidably connected to the sliding seat through the track, and includes an arc-shaped clamping plate. The cross-section of the clamping plate is a semicircular arc, and the radius of the arc is equal to the radius of the steel support. The inner wall of the arc-shaped clamping plate is provided with an anti-slip rubber inner wall to increase friction. The clamping plate includes a left clamping plate and a right clamping plate symmetrically arranged at both ends of the track. The right clamping plate is close to the working platform 9. The clamping plate is slidably connected to the track through the moving pair 5.

[0070] The movable pair 5 includes a clamp welded to the side of the clamp plate, which is arranged on a side wing plate of the secondary rib 3 of the I-beam, and the outer edge of the clamp extends beyond the wing plate. The extended clamp is provided with a limit hole, and the bolt 21 passes through the limit hole; each set of the clamps is provided with two front clamps 19 and two rear clamps 20, which are respectively welded to the four corners of the bottom of the clamping part;

[0071] The left and right splints are moved along the track by pulling the fixing parts arranged on the outside of the arc-shaped splints, and the fixing parts include: rollers 18 fixedly arranged on the diagonals of the splints; pull belts 16 arranged on the outside of the rollers 18 and on the outer surface of the splints along the track direction, one end of the pull belt 16 is fixed to the splint on one side adjacent to the working platform 9 through a buckle 15, and the other end is freely extended from the top of the splint on the other side, and when the splint is moved to the specified position on the track by pulling the pull belt 16 at the other end, the conveyor belt is fixed to the buckle 15.

[0072] In this embodiment, Figures 4 to 6 As shown, the method for removing the steel support under the half cover plate based on the auxiliary tool for removing the steel support under the half cover plate includes the following steps:

[0073] S1: Place two dismantling auxiliary tools along the axis of the steel support and move them to the ends of the steel support to tighten the two ends of the steel support to prevent it from falling or sliding out during movement;

[0074] S2: Open the left clamp to one end of the track by manually pulling the belt 16, and push and pull the right clamp to the other end of the track to facilitate the steel support to enter the fixing device;

[0075] S3: Start the vertical telescopic device 13, the steel support fixing device is lifted evenly, and the lifting speed is controlled so that the steel support falls smoothly on the track of the sliding seat;

[0076] S4: The operator manually pushes the right clamping plate close to the working platform 9 on the working platform 9 to move toward the steel support on the track. The left clamping plate away from the working platform 9 is driven to move toward the steel support on the track by pulling the pull belt 16 provided on the top of the left clamping plate. After the left clamping plate and the right clamping plate fasten the steel support, the pull belt 16 is fixed to the buckle 15 on the right clamping plate.

[0077] S5: After the steel supports on both sides are fixed in the clamping plates of the clamping portion, the hydraulic telescopic cylinder is activated to continue to lift the two sets of fixing devices evenly until the movable ends of the steel supports leave the steel purlin and are separated from the top surface of the connecting beam;

[0078] S6: At this time, the universal pulley set set at the bottom of the column is started to move the entire auxiliary device, transporting the steel support to the bottom of the half cover and into the operating range of the crane wire rope;

[0079] S7: Use crane to lift steel support for operation.

[0080] The steel support is clamped by the steel support fixing device, and is moved under the half cover by the moving device 14 and the vertical telescopic device 13. Only a small number of personnel are needed to cooperate with the crane to complete the lifting of the steel support under the half cover, which saves labor and time, is convenient and safe to use, reduces the occupation of the working space, and reduces the safety hazards of personnel at work.

[0081] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A method for removing the steel support under the half cover plate, based on an auxiliary tool for removing the steel support under the half cover plate, comprising: A support frame is provided with a working platform on the top, a moving device is provided at the bottom, and a vertical telescopic device is also provided on the support frame; The steel support fixing device is arranged above the support frame, fixedly connected to the support frame, and arranged on the side of the working platform, and includes: A sliding seat is fixedly arranged on the top of the support frame, and a track perpendicular to the axis direction of the steel support is arranged on the top of the sliding seat; The clamping part is connected to the sliding seat by a track, and includes a left clamping plate and a right clamping plate symmetrically arranged at both ends of the track. The left clamping plate and the right clamping plate slide relative to each other on the track to limit the clamping wall, so as to fasten the steel support; A fixing member, arranged on the clamping portion, used for pulling the left clamping plate and the right clamping plate to slide relative to each other on the track; The clamping part is provided with an arc-shaped clamping wall, and the clamping part includes a first clamping part and a second clamping part, the inner diameter of the clamping wall of the first clamping part is d1, the inner diameter of the clamping wall of the second clamping part is d2, d1>d2, and two groups of the first clamping part and the second clamping part are arranged on the track at intervals; It is characterized by comprising the following steps: S1: Set two dismantling auxiliary tools along the axis of the steel support and move them to the ends of both sides of the steel support; S2: Open the left and right clamping plates to the two ends of the sliding seat through the fixing parts; S3: Start the vertical telescopic device, lift the steel support fixing device evenly, and control the lifting speed so that the steel support falls smoothly on the sliding seat; S4: The operator, on the working platform, tightens the left and right clamping plates of the clamping part through the fixing parts, so that the clamping wall is limited and fastened to the steel support; S5: After the steel supports on both sides are fixed in the clamping parts, the vertical telescopic device is started to evenly lift the steel support fixing device until the movable end of the steel support leaves the steel purlin and is separated from the top surface of the connecting beam; S6: Start the moving device to move the steel support horizontally away from under the half cover plate and send it to the operating range of the crane wire rope; S7: Use crane to lift the steel support for operation.

2. The method for removing the steel support under the half cover according to claim 1 is characterized in that: The fixing member comprises: Rollers, fixedly arranged on the corners of the splint; A pull belt is arranged on the outside of the roller and on the outer surface of the clamp plate along the track direction. One end is fixed to the clamp plate on one side adjacent to the working platform through a fixing buckle, and the other end extends freely from the top of the clamp plate on the other side. The clamp plate is driven to move on the track by pulling the pull belt at the other end.

3. The method for removing the steel support under the half cover according to claim 1 is characterized in that: The sliding seat is an I-beam assembly, comprising: The main rib of the I-beam is fixedly arranged on the top of the support frame; The I-beam secondary ribs are fixedly connected to the top of the I-beam main ribs, and a plurality of the I-beam secondary ribs are arranged in parallel and equidistantly, and the tops of two of the I-beam secondary ribs form a track.

4. The method for removing the steel support under the half cover according to claim 3 is characterized in that: The clamping part is slidably connected to the sliding seat through a moving pair, and the moving pair is a clamp slidably connected to the track. The clamp is arranged on a side wing plate of the secondary rib of the I-beam, and the outer edge of the clamp extends out of the wing plate. A limiting hole is arranged on the extended clamp, and the bolt passes through the limiting hole; four clamps are arranged in each group, which are respectively welded to the four bottom corners of the clamping part.

5. The method for removing the steel support under the half cover according to claim 3 is characterized in that: The web of the secondary rib of the I-beam is symmetrically arranged with two limit baffles along the vertical center line, which are respectively a front limit baffle and a rear limit baffle, and the distance between the limit baffles is the combined length of the left clamping plate and the right clamping plate.

6. The method for removing the steel support under the half cover according to claim 1 is characterized in that: The cross-section of the clamping wall of the left clamping plate and the right clamping plate is a semicircular arc with a radius equal to that of the steel support, and the clamping wall is configured as a rubber inner wall.

7. The method for removing the steel support under the half cover according to claim 1 is characterized in that: An oblique support and a horizontal support are arranged between the support rods of the support frame, and the support frame is fixedly supported by the oblique support and the horizontal support.

8. The method for removing the steel support under the half cover according to claim 1 is characterized in that: The moving device is a universal pulley set arranged at the bottom of the support frame, and the vertical telescopic device is a hydraulic cylinder telescopic support arranged above the pulley.

9. The method for removing the steel support under the half cover according to claim 1 is characterized in that: A protective railing is arranged on the outer side of the working platform.

Images