Support vertical jacking dismantling tool under limited space condition and construction method

Abstract

The invention discloses a tool for vertically jacking and dismantling a bracket under a limited space condition, which comprises an outer sleeve frame erected outside the bracket to be dismantled, and a stable clamp used for connecting the bracket to be dismantled and the outer sleeve frame, the fixed end of the jacking system is installed on the outer sleeve frame, the telescopic end of the jacking system is installed on a support to be dismantled, and the jacking system is used for jacking the support to be dismantled; the sliding beam system is arranged at the bottom of the support to be dismantled. According to the construction method for vertically jacking and dismantling the support, under the limited space condition, a stable clamp of an outer sleeve frame is used for conducting stress conversion on the steel pipe pile support, a jacking system is lowered, and the steel pipe pile support is dismantled from bottom to top; the steel pipe pile support can be safely and rapidly dismantled under the limited space condition, the risk of high-altitude operation is avoided, and the dismantling quality of a steel pipe pile is guaranteed.

Description

Technical Field

[0001] The present invention relates to the field of vertical lifting and removal of supports, and more specifically, to a tool and construction method for vertical lifting and removal of supports under confined space conditions. Background Art

[0002] The bracket is generally divided into full bracket and steel pipe pile bracket. In the case of high height and complex terrain, steel pipe pile bracket is generally used. Because after the construction of the bridge superstructure is completed, there is only a 1-1.5m gap between the top of the steel pipe pile bracket and the bottom of the beam, it is impossible to directly use lifting equipment for lifting and removal. Generally, there are two methods:

[0003] 1. Manually cut off the top 5-6m steel pipe support, and then lower it to the ground through a winch, leaving enough lifting space between the remaining steel pipe pile support and the bottom of the beam. This method has high construction risks and is difficult to operate.

[0004] Second, place the top of the bracket outside the bridge deck by dragging, slanting, etc., so that the lifting equipment can hook the force, and then slowly lower it to the ground. This process is difficult to dismantle and has a high risk factor. Summary of the invention

[0005] In order to achieve these purposes and other advantages according to the present invention, a preferred embodiment of the present invention provides a vertical lifting and removal tool for a support under confined space conditions, comprising:

[0006] A coat rack is mounted outside the bracket to be removed.

[0007] A stabilizing fixture for connecting the bracket to be removed and the coat rack;

[0008] A lifting system, a fixed end of which is mounted on the outer frame, and a telescopic end of which is mounted on the bracket to be removed, for lifting the bracket to be removed;

[0009] The sliding beam system is arranged at the bottom of the support to be removed.

[0010] According to a preferred embodiment of the present invention, the outer frame comprises a plurality of outer frame steel pipes arranged vertically and a horizontal joint and an oblique joint detachably connected to two adjacent outer frame steel pipes, wherein the horizontal joint is arranged horizontally and the oblique joint is arranged obliquely.

[0011] According to a preferred embodiment of the present invention, a tightening system is provided in the middle of the steel wire rope.

[0012] According to a preferred embodiment of the present invention, the sliding beam system includes a slide rail, a limit plate, a slide plate and a bracket, the two slide rails are arranged in parallel on the ground and a certain distance apart, the limit plate is clamped between the two slide rails, the support plate is vertically connected to the limit plate and is located on the surface of the slide rail, and the slide plate is arranged between the bracket and the slide rail.

[0013] According to a preferred embodiment of the present invention, an outer coat rack base is provided at the bottom of the outer coat rack, and the outer coat rack base includes a base body, an anchor plate and embedded anchor bars, the anchor plate is laid between the base body and the column foot of the outer coat rack steel pipe, and the embedded anchor bars pass through the column foot of the outer coat rack steel pipe and are anchored into the base body.

[0014] According to a preferred embodiment of the present invention, the support plate is in a groove shape, and the bracket to be disassembled is mounted on the support plate.

[0015] According to a preferred embodiment of the present invention, the stabilizing clamp includes a clamp A, a stiffening connecting plate and a sleeve A. The clamp A is sleeved on the outside of the steel pipe column of the bracket to be disassembled, and the sleeve A is sleeved on the outside of the outer frame steel pipe. The two ends of the stiffening connecting plate are respectively connected to the clamp A and the sleeve A.

[0016] According to a preferred embodiment of the present invention, the jacking system includes a clamp B, a stiffening ear plate, a jack, and a sleeve B. The clamp B is sleeved on the outside of the steel pipe column of the bracket to be disassembled, and the sleeve B is sleeved on the outside of the outer frame steel pipe. The stiffening ear plate is connected to one end of the clamp B, the telescopic end of the jack is fixed to the stiffening ear plate, and the fixed end of the jack is fixed to the sleeve B.

[0017] On the other hand, a preferred embodiment of the present invention further provides a construction method for vertically lifting and removing tooling for a support under confined space conditions, comprising the following steps:

[0018] S1. Determine the outer frame base and outer frame according to the size of the steel pipe pile support to be removed;

[0019] S2. Install the sliding beam system, and connect the outer frame steel pipe to the base through embedded anchor bars;

[0020] S3, keep the clamp A in the stabilizing fixture and the clamp B in the lifting system in a closed state until the first section of the bracket to be removed is removed;

[0021] S4, release the clamp A, close the clamp B, lift the jacking system to a certain height, install the sliding beam system, and then slowly lower the bracket to be removed to the bracket. At this time, the gravity of the bracket to be removed is borne by the jacking system, and the sliding beam system is not subjected to force;

[0022] S5. After the jacking system lifts the bracket upward by 3-5cm, the bottom section of the bracket to be disassembled is transported to the lifting area using the sliding beam system;

[0023] S6. The jack slowly retracts and the bracket to be removed is slowly lowered;

[0024] S7. When the jack cylinder retracts to the limit, the lowering is stopped, the clamp A is closed, the clamp B remains closed, and the connection between the clamp A and the bracket to be removed is released; the jack is lifted, the sleeve A is moved down to the preset position, and the clamp A is connected to the bracket to be removed; the clamp A is released, and the jack is retracted and lowered;

[0025] S8. Repeat steps S5-S7 until the bracket is completely removed.

[0026] The present invention includes at least the following beneficial effects: the invention provides a construction method for vertical jacking and dismantling of a bracket, in which, under confined space conditions, a stable clamp of an outer frame is used to convert the force of the steel pipe pile bracket, and the jacking system is lowered to dismantle the steel pipe pile bracket from bottom to top; the present invention realizes the safe and rapid dismantling of the steel pipe pile bracket under confined space conditions, avoids the risk of high-altitude operations, and ensures the dismantling quality of the steel pipe piles.

[0027] Other advantages, objectives and features of the present invention will be embodied in part through the following description, and in part will be understood by those skilled in the art through study and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is an elevation view of the vertical lifting and dismantling tooling for the support in the present invention.

[0029] Figure 2 It is a plan view of the vertical lifting and removal tooling for the support in the present invention.

[0030] Figure 3 It is a schematic structural diagram of the outer sleeve in the present invention.

[0031] Figure 4 It is a structural schematic diagram of the coat rack base in the present invention.

[0032] Figure 5 It is a schematic diagram of the connection between the coat rack base and the coat rack in the present invention.

[0033] Figure 6 It is an elevation view of the sliding beam system in the present invention.

[0034] Figure 7 It is a plan view of the sliding beam system in the present invention.

[0035] Figure 8 It is a schematic diagram of the structure of the stabilizing clamp in the present invention.

[0036] Fig. 9 It is a structural schematic diagram of the jacking system in the present invention.

[0037] Fig.10 It is a construction schematic diagram of step S2 in the present invention.

[0038] Fig.11 It is a construction schematic diagram of step S3 in the present invention.

[0039] Fig.12 It is a construction schematic diagram of step S4 in the present invention.

[0040] Fig.13 It is a construction schematic diagram of step S5 in the present invention.

[0041] Fig.14 It is a construction schematic diagram of step S6 in the present invention.

[0042] Fig.15 It is a construction schematic diagram of step S7 in the present invention. DETAILED DESCRIPTION

[0043] The present invention is further described in detail below in conjunction with the accompanying drawings so that those skilled in the art can implement the invention with reference to the description.

[0044] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art can think of other obvious variations. The basic principles of the present invention defined in the following description can be applied to other embodiments, variations, improvements, equivalents, and other technical solutions that do not deviate from the spirit and scope of the present invention.

[0045] Those skilled in the art should understand that, in the disclosure of the present invention, the orientation or position relationship indicated by the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. are based on the orientation or position relationship shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the above terms should not be understood as limiting the present invention.

[0046] It is to be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0047] like Figure 1-15As shown, a preferred embodiment of the present invention provides a tool for vertically lifting and removing a support under a confined space condition, comprising:

[0048] The coat rack 1 is mounted outside the bracket 2 to be removed.

[0049] A stabilizing fixture 3, which is used to connect the bracket 2 to be removed and the outer coat rack 1;

[0050] A lifting system 4, whose fixed end is mounted on the outer frame 1, and whose telescopic end is mounted on the bracket 2 to be removed, for lifting the bracket 2 to be removed;

[0051] The sliding beam system 5 is arranged at the bottom of the support 2 to be removed.

[0052] In the above technical solution, the outer frame 1 includes a plurality of outer frame steel pipes 1-1 arranged vertically and a flat joint 1-2 and an oblique joint 1-3 detachably connected to two adjacent outer frame steel pipes. The flat joint 1-2 is arranged horizontally, and the oblique joint 1-3 is arranged obliquely. The outer frame steel pipe 1-1 is a steel pipe with pin holes on the surface. The length of the flat joint is adjustable, which can be specifically achieved by setting two steel pipes, both of which have pin holes. By inserting pins into pin holes at different positions, the length can be adjusted. The outer frame steel pipe 1-1 and the flat joint are connected by ear plates and bolts to achieve quick installation and quick removal. The oblique joint uses a steel wire rope, and a tightening system 1-4 is provided in the middle of the steel wire rope.

[0053] In another technical solution, the slide beam system 5 includes a slide rail 5-1, a limit plate 5-2, a slide plate 5-3 and a bracket 5-4. The two slide rails 5-1 are arranged parallel to each other on the ground and are spaced a certain distance apart. The limit plate 5-2 is sandwiched between the two slide rails 5-1. The bracket is vertically connected to the limit plate and is located on the surface of the slide rail. The slide plate is arranged between the bracket and the slide rail. The bracket is groove-shaped, and the bracket to be disassembled is mounted on the bracket.

[0054] In the above technical solution, the bracket is in the shape of a long strip, and as the bracket moves along the slide plate 5-3 on the slide rail 5-1, it drives the bracket to be removed to move. Moreover, the bracket is in the shape of a groove, and its side is set to bend upward to form a baffle, which has a better stabilizing effect.

[0055] In another technical solution, a coat rack base 6 is provided at the bottom of the coat rack 1, and the coat rack base 6 includes a base body 6-1, an anchor plate 6-2, and a pre-buried anchor bar 6-3. The anchor plate 6-2 is laid between the base body 6-1 and the column foot of the coat rack steel pipe 1-1, and the pre-buried anchor bar passes through the column foot of the coat rack steel pipe 1-1 and is anchored into the base body. A lifting ring 6-4 is provided on the base body 6-1.

[0056] In the above technical solution, the anchor plate 6-2 can be used to disperse the stress of the outer frame steel pipe 1-1 on the outer frame base, and the embedded anchor bar 6-3 can be used to achieve the stability of the connection between the outer frame steel pipe 1-1 and the outer frame base.

[0057] In another technical solution, the stabilizing fixture 3 includes a clamp A3-1, a stiffening connecting plate 3-2 and a sleeve A3-3, wherein the clamp A is sleeved outside the steel pipe column of the bracket to be disassembled, and the sleeve A is sleeved outside the outer frame steel pipe, and the two ends of the stiffening connecting plate are respectively connected to the clamp A and the sleeve A. The clamp A is connected to the steel pipe pile to be disassembled through an opening and closing bolt ear plate.

[0058] Specifically, the outer frame steel pipe 1-1 is provided with a plurality of pin holes, and the clamp A also has a through hole, and the pins are inserted into the pin holes on the outer frame steel pipe 1-1 and the through holes on the clamp A, thereby achieving fixed installation of the two.

[0059] In another technical solution, the jacking system 4 includes a clamp B4-1, a stiffening ear plate 4-2, a jack 4-3, and a sleeve B4-4. The clamp B is sleeved outside the steel pipe column of the bracket to be disassembled, and the sleeve B4-4 is sleeved outside the outer frame steel pipe. The stiffening ear plate 4-2 is connected to one end of the clamp B4-4, the telescopic end of the jack is fixed to the stiffening ear plate, and the fixed end of the jack is fixed to the sleeve B4-4. The clamp B is connected to the steel pipe pile to be disassembled through an opening and closing bolt ear plate.

[0060] On the other hand, a preferred embodiment of the present invention further provides a construction method for vertically lifting and removing tooling for a support under confined space conditions, comprising the following steps:

[0061] S1. Determine the outer frame base and outer frame according to the size of the steel pipe pile support to be removed;

[0062] S2. Install the sliding beam system, and connect the outer frame steel pipe to the base through pre-buried anchor bars; Fig.10 As shown;

[0063] S3, keep the clamp A in the stabilizing fixture and the clamp B in the lifting system in a closed state until the first section of the bracket to be removed is removed; Fig.11 As shown;

[0064] S4. Release hoop A, close hoop B, and lift the jacking system to a certain height. After installing the sliding beam system, Fig.12 As shown; then slowly lower the bracket to be removed onto the bracket. At this time, the gravity of the bracket to be removed is borne by the jacking system, and the sliding beam system is not subjected to force;

[0065] S5. After the jacking system lifts the bracket upward by 3-5cm, the bottom section of the bracket to be disassembled is transported to the lifting area using the sliding beam system; Fig.13As shown;

[0066] S6. Slowly retract the jack and slowly lower the bracket to be removed. Fig.14 As shown;

[0067] S7. When the jack cylinder retracts to the limit, the lowering is stopped, the clamp A is closed, the clamp B remains closed, and the connection between the clamp A and the bracket to be removed is released; the jack is lifted, the sleeve A is moved down to the preset position, and the clamp A is connected to the bracket to be removed; the clamp A is released, and the jack is retracted and lowered; Fig.15 shown.

[0068] S8. Repeat steps S5-S7 until the bracket is completely removed.

[0069] In the above technical scheme, the difficult problem of dismantling the steel pipe pile support is solved under the condition of confined space construction, the workers are prevented from working at height, and the support is safely dismantled from bottom to top. The support is also continuously lifted and lowered in a walking manner, which improves the construction safety and shortens the construction period. In the present invention, each mechanism in the outer frame is a detachable bolt matching connection, which can meet the dismantling of supports of various sizes, has strong versatility, can be used in a turnover manner, and has good economic benefits. The quality of the support dismantling construction in the present invention is highly controllable, which reduces the loss of dismantled components and improves economic benefits.

[0070] Although the embodiments of the present invention have been disclosed as above, they are not limited to the applications listed in the specification and the implementation modes, and they can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A tool for vertical lifting and removal of a support under confined space conditions, characterized in that: include: A coat rack is mounted outside the bracket to be removed. A stabilizing fixture for connecting the bracket to be removed and the coat rack; A lifting system, a fixed end of which is mounted on the outer frame, and a telescopic end of which is mounted on the bracket to be removed, for lifting the bracket to be removed; The sliding beam system is arranged at the bottom of the support to be removed.

2. The tooling for vertically lifting and removing supports in confined space conditions according to claim 1 is characterized in that: The outer coat rack comprises a plurality of outer coat rack steel pipes arranged vertically and a horizontal joint and an oblique joint detachably connected to two adjacent outer coat rack steel pipes. The horizontal joint is arranged horizontally and the oblique joint is arranged obliquely.

3. The tool for vertically lifting and removing a support under confined space conditions according to claim 1 is characterized in that: The oblique connection adopts a steel wire rope, and a tightening system is provided in the middle of the steel wire rope.

4. The tool for vertically lifting and removing a support under confined space conditions according to claim 1 is characterized in that: The sliding beam system includes a slide rail, a limit plate, a slide plate and a bracket. The two slide rails are arranged in parallel on the ground and a certain distance apart from each other. The limit plate is clamped between the two slide rails. The bracket is vertically connected to the limit plate and is located on the surface of the slide rail. The slide plate is arranged between the bracket and the slide rail.

5. The tool for vertically lifting and removing a support under confined space conditions according to claim 2 is characterized in that: An outer frame base is arranged at the bottom of the outer frame, and the outer frame base includes a base body, an anchor plate and embedded anchor bars. The anchor plate is laid between the base body and the column foot of the outer frame steel pipe, and the embedded anchor bars pass through the column foot of the outer frame steel pipe and are anchored into the base body.

6. The tool for vertically lifting and removing a support in a confined space according to claim 4 is characterized in that: The support plate is in a groove shape, and the bracket to be disassembled is mounted on the support plate.

7. The tool for vertically lifting and removing a support in a confined space according to claim 2 is characterized in that: The stabilizing clamp includes a clamp A, a stiffening connecting plate and a sleeve A. The clamp A is sleeved on the outside of the steel pipe column of the bracket to be disassembled, and the sleeve A is sleeved on the outside of the outer frame steel pipe. The two ends of the stiffening connecting plate are respectively connected to the clamp A and the sleeve A.

8. The tooling for vertically lifting and removing a support in a confined space according to claim 2 is characterized in that: The jacking system includes a clamp B, a stiffening ear plate, a jack, and a sleeve B. The clamp B is sleeved on the outside of the steel pipe column of the bracket to be disassembled, and the sleeve B is sleeved on the outside of the outer frame steel pipe. The stiffening ear plate is connected to one end of the clamp B, the telescopic end of the jack is fixed to the stiffening ear plate, and the fixed end of the jack is fixed to the sleeve B.

9. The construction method of the vertical lifting and removal tooling of the support under confined space conditions as described in any one of claims 1 to 8, characterized in that: The following steps are involved: S1. Determine the outer frame base and outer frame according to the size of the steel pipe pile support to be removed; S2. Install the sliding beam system, and connect the outer frame steel pipe to the base through embedded anchor bars; S3, keep the clamp A in the stabilizing fixture and the clamp B in the lifting system in a closed state until the first section of the bracket to be removed is removed; S4, release the clamp A, close the clamp B, lift the jacking system to a certain height, install the sliding beam system, and then slowly lower the bracket to be removed to the bracket. At this time, the gravity of the bracket to be removed is borne by the jacking system, and the sliding beam system is not subjected to force; S5. After the jacking system lifts the bracket upward by 3-5cm, the bottom section of the bracket to be disassembled is transported to the lifting area using the sliding beam system; S6. The jack slowly retracts and the bracket to be removed is slowly lowered; S7. When the jack cylinder retracts to the limit, the lowering is stopped, the clamp A is closed, the clamp B remains closed, and the connection between the clamp A and the bracket to be removed is released; the jack is lifted, the sleeve A is moved down to the preset position, and the clamp A is connected to the bracket to be removed; the clamp A is released, and the jack is retracted and lowered; S8. Repeat steps S5-S7 until the bracket is completely removed.

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