Back-jacking supporting device

Abstract

The utility model provides a back-jacking supporting device which comprises a bearing assembly and a supporting assembly, the bearing assembly is used for bearing a supporting beam to be cut, one end of the supporting assembly abuts against the ground, and the other end of the supporting assembly is fixedly connected with the bearing assembly. The bearing assembly comprises a shock absorber and a jacking which are integrally arranged. The supporting assembly comprises a pair of stand column supports and a fixing plate used for connecting the two stand column supports. The top support is arranged between the shock absorber and the fixing plate and comprises a top plate, a lead screw and a buckle nut, one end of the lead screw is fixedly connected to the top plate, the other end of the lead screw penetrates through the fixing plate and is in threaded connection with the buckle nut, the top plate and the fixing plate are arranged in parallel, and the buckle nut abuts against the fixing plate; when supporting beams with different heights are dismantled, the relative positions of the buckle nuts and the lead screws are adjusted, the distance between the top plate and the fixing plate is adjusted, namely the overall height of the bearing assembly and the supporting assembly is adjusted so as to adapt to the height of the supporting beams, and the applicable height of the back-jacking supporting device can be increased.

Description

Technical Field

[0001] The utility model belongs to the technical field of building construction, and particularly relates to a top return support device. Background Art

[0002] Foundation pit support is a measure used to support, reinforce, and protect the sidewalls of a foundation pit and its surroundings to ensure the safety of underground structure construction and the surrounding environment. Due to the influence of underground foundations, groundwater, and the design depth of basements, foundation pit support is no longer limited to conventional soil nailing walls, shotcrete anchors, and cement-soil mixing piles. For construction safety, some foundation pit support systems utilize concrete support beams to ensure the stability of the foundation pit.

[0003] Concrete support beams often need to be removed after basement excavation and slab construction are complete. When removing support beams, the principle is to first remove small beams, then large beams; first remove secondary beams, then main beams; and first remove the midspan, then the ends. They are cut into small sections using chainsaws or hole cutting, and then lifted using a combination of cranes, mobile cranes, forklifts, crushers, and shovels. Before cutting the support beams, a top-down support structure is required beneath them to provide support, smooth the cutting process, and ensure safe construction on site. Existing top-down support structures typically use full-height scaffolding, but this requires extensive installation and removal for each support beam. Furthermore, temporary full-height scaffolding of varying heights is required for each support beam to be removed, which can lengthen the construction process and require significant manpower and material resources. Furthermore, this method of operation consumes significant workspace, impacting other work areas on site and hindering safe and civilized construction. Utility Model Content

[0004] In order to overcome the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a top-returning support device which can adjust the support height, can be used cyclically, and is easy to install and disassemble.

[0005] The technical solution adopted by the utility model to solve its technical problems is:

[0006] The utility model provides a top-return support device, comprising:

[0007] A supporting assembly for supporting the support beam to be cut;

[0008] A support assembly, one end of which abuts against the ground and the other end is fixedly connected to the supporting assembly;

[0009] The supporting assembly includes an integrated shock absorber and a top support, and the supporting assembly includes a pair of column supports and a fixing plate for connecting the two column supports;

[0010] The jacking support is provided between the shock absorber and the fixing plate, and includes a top plate, a screw rod and a snap nut. One end of the screw rod is fixedly connected to the top plate, and the other end passes through the fixing plate and is threadedly connected to the snap nut. The top plate and the fixing plate are arranged in parallel, and the snap nut abuts against the fixing plate.

[0011] By adjusting the relative positions of the snap nut and the screw rod, the distance between the top plate and the fixing plate can be adjusted.

[0012] With such an arrangement, when dismantling support beams of different heights, the distance between the top plate and the fixed plate can be adjusted by adjusting the relative positions of the snap nut and the screw rod, that is, the overall height of the supporting assembly and the supporting assembly can be adjusted to adapt to the height of the support beam, thereby increasing the applicable height of the return support device in the utility model; on the other hand, due to the integrated arrangement of the shock absorber and the top support, it can effectively reduce the vibration generated by the support beam during cutting, enhance the overall stability, and prevent the supporting assembly from overturning.

[0013] As a preferred embodiment, the supporting assembly also includes a support seat, and the support seat and the top support are respectively fixed on both sides of the shock absorber. The support seat includes a first crossbeam and a rubber strip that are fixedly connected. The first crossbeam is arranged between the rubber strip and the shock absorber, and the rubber strip is used to resist the support beam to be cut. Such an arrangement can play a role in noise reduction and vibration reduction.

[0014] As a preferred embodiment, the two upright supports are configured in an eight-shaped configuration, so that the overall device structure is stable and the force transmission is uniform.

[0015] As a preferred embodiment, a steel plate support is provided at one end of the column support away from the fixed plate, and the steel plate support is sleeved on the column support and fixedly connected to the column support. With such an arrangement, the steel plate support can wrap the bottom of the column support, increase the contact surface between the support assembly and the ground, and ensure that the contact surface between the support assembly and the ground is flat, so that the force transmission of the entire device is more uniform, and prevent overturning due to unstable contact surface.

[0016] As a preferred embodiment, a rubber pad is provided at one end of the steel plate support away from the column support, and the rubber pad is adhesively connected to the steel plate support. The end of the rubber pad away from the steel plate support is configured as a plane for abutting the ground. With such an arrangement, when the rubber pad is severely worn, it can be removed and replaced with a new rubber pad, thereby extending the service life of the support assembly and the return support device. On the other hand, due to the characteristics of the rubber itself, it also has the functions of anti-slip, noise reduction, wear resistance and shock absorption.

[0017] As a preferred embodiment, the shock absorber includes a pair of connecting plates and a plurality of springs, and the two connecting plates are arranged in parallel. The two connecting plates are defined as a first connecting plate and a second connecting plate, respectively. One end of any spring is fixedly connected to the first connecting plate, and the other end is fixedly connected to the second connecting plate, that is, the shock absorber of the present invention is a damping spring shock absorber. Such an arrangement can effectively reduce the vibration generated by the support beam during cutting, enhance the overall stability, and also has the function of assisting in adjusting the support height to ensure that the supporting assembly always remains tightly connected to the support beam to be cut.

[0018] As a preferred embodiment, one of the first connecting plate and the second connecting plate is fixedly connected to the first crossbeam, and the other is fixedly connected to the top plate.

[0019] As a preferred embodiment, a first longitudinal beam and a second longitudinal beam arranged in parallel are provided between the two column supports, the two ends of the first longitudinal beam are respectively fixedly connected to the two column supports, and the two ends of the second longitudinal beam are also respectively fixedly connected to the two column supports.

[0020] As a preferred embodiment, the support assembly further includes a second crossbeam and a third crossbeam arranged in parallel, one of the second crossbeam and the third crossbeam is fixedly connected to the first longitudinal beam, and the other is fixedly connected to the second longitudinal beam.

[0021] As a preferred embodiment, the extending direction of the first longitudinal beam and the second longitudinal beam is defined as the X direction, that is, the direction from one column support to the other column support is defined as the X direction; the direction from the second longitudinal beam to the first longitudinal beam is defined as the Y direction; and the extending direction of the second cross beam and the third cross beam is defined as the Z direction.

[0022] The X direction, the Y direction, and the Z direction are perpendicular to each other.

[0023] Such an arrangement enables the return support device of the present invention to transmit force evenly and have good stability, thereby reducing the risk of the support beam to be cut being crushed due to being too heavy.

[0024] Compared with the prior art, the beneficial effects of the present invention are:

[0025] When dismantling support beams of different heights, the distance between the top plate and the fixed plate can be adjusted by adjusting the relative positions of the snap nut and the screw rod, that is, the overall height of the supporting assembly and the supporting assembly can be adjusted to adapt to the height of the support beam, thereby increasing the applicable height of the return support device in the utility model; on the other hand, due to the integrated arrangement of the shock absorber and the top support, it can effectively reduce the vibration generated by the support beam during cutting, enhance the overall stability, and prevent the supporting assembly from overturning. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0027] Figure 1 This is a schematic diagram of the planar structure of the top return support device in an embodiment of the present utility model;

[0028] Figure 2 This is a schematic diagram of the planar structure of the shock absorber in the embodiment of the present utility model;

[0029] Figure 3 This is a schematic diagram of the planar structure of the jacking in the embodiment of the present utility model;

[0030] Figure 4 for Figure 1 A magnified schematic diagram of part A;

[0031] Figure 5 This is a schematic diagram of the top return support device according to an embodiment of the present invention supporting a support beam to be cut.

[0032] Reference numerals:

[0033] 1-Support assembly; 11-Shock absorber; 111-First connecting plate; 112-Second connecting plate; 113-Spring; 12-Top support; 121-Snap nut; 122-Top plate; 123-Screw rod; 13-Support seat; 131-First crossbeam; 132-Rubber strip; 2-Support assembly; 21-Post support; 22-Fixed plate; 23-First longitudinal beam; 24-Second crossbeam; 25-Second longitudinal beam; 26-Third crossbeam; 27-Steel plate support; 28-Rubber pad; 31-First bolt; 32-Second bolt;

[0034] 100-the first section of support beam; 200-the second section of support beam; 300-the third section of support beam. DETAILED DESCRIPTION

[0035] In order to more clearly understand the above-mentioned purposes, features and advantages of the present invention, the present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, in the absence of conflict, the embodiments of this application and the features in the embodiments can be combined with each other. In the following description, many specific details are set forth in order to fully understand the present invention. The embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0036] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0037] The utility model provides a top-return support device, please refer to Figure 1 The device includes a supporting assembly 1 and a supporting assembly 2. The supporting assembly 1 is used to support the support beam to be cut. One end of the supporting assembly 2 is in contact with the ground, and the other end is fixedly connected to the supporting assembly 1. The supporting assembly 2 includes a pair of column supports 21 and a fixing plate 22 for connecting the two column supports 21. The fixing plate 22 is prefabricated with thick steel plates and has an inverted cup shape. It is used to fix the column supports 21 and connect the supporting assembly 1. The two column supports 21 are configured in an "eight" shape. The structure is simple and easy to assemble and disassemble. It also makes the overall structure of the device stable and the force transmission uniform. A first longitudinal beam 23 and a second longitudinal beam 25 are arranged in parallel between the two column supports 21. The two ends of the first longitudinal beam 23 are fixedly connected to the two column supports 21 respectively, and the two ends of the second longitudinal beam 25 are also fixedly connected to the two column supports 21 respectively. The support assembly 2 also includes a second crossbeam 24 and a third crossbeam 26 arranged in parallel. One of the second crossbeam 24 and the third crossbeam 26 is fixedly connected to the first longitudinal beam 23, and the other is fixedly connected to the second longitudinal beam 25. The extension direction of the first longitudinal beam 23 and the second longitudinal beam 25 is defined as the X direction, that is, the direction from one column support 21 to the other column support 21 is defined as the X direction; the direction from the second longitudinal beam 25 to the first longitudinal beam 23 is defined as the Y direction; and the extension direction of the second crossbeam 24 and the third crossbeam 26 is defined as the Z direction. The X direction, Y direction, and Z direction are perpendicular to each other. That is, the support assembly 2 is provided with a beam for transmitting force in the three-dimensional coordinate system composed of the X direction, Y direction, and Z direction. This ensures that the return support device of the present invention transmits force evenly and has good stability, reducing the risk of the support beam to be cut being crushed due to being too heavy.

[0038] For further information, please also refer to Figures 1 to 4The supporting assembly 1 includes a shock absorber 11, a top support 12 and a support seat 13, wherein the shock absorber 11 and the top support 12 are integrated, and the top support 12 is provided between the shock absorber 11 and the fixing plate 22. Figure 3 As shown, the jacking support 12 includes a top plate 122, a screw rod 123 and a snap nut 121. One end of the screw rod 123 is fixedly connected to the top plate 122, and the other end is passed through the fixing plate 22 and is threadedly connected to the snap nut 121. Preferably, the fixing plate 22 can also be provided with a thread of the same size as that on the snap nut 121, so that the screw rod 123 can be rotatably fixedly connected to the fixing plate 22, and the provision of the snap nut 121 can be omitted, and the relative height adjustment of the supporting assembly 1 and the supporting assembly 2 can be directly achieved. Of course, the screw rod 123 can also be configured to be threadedly connected to the snap nut 121 and the fixing plate 22 respectively to further enhance the stability of the connection. Figure 1 As shown, the top plate 122 and the fixed plate 22 are arranged in parallel, and the snap nut 121 abuts the fixed plate 22. In this embodiment, the snap nut 121 is arranged to be located above the fixed plate 22. It can be understood that the snap nut 121 can also be arranged to be located below the fixed plate 22. The principle is the same and no additional details are given here. With such an arrangement, when dismantling support beams of different heights, the distance between the top plate 122 and the fixed plate 22 can be adjusted by adjusting the relative positions of the snap nut 121 and the screw rod 123, that is, the overall height of the support assembly 1 and the support assembly 2 is adjusted to adapt to the height of the support beam and increase the applicable height of the return support device in the utility model; on the other hand, since the shock absorber 11 and the top support 12 are integrated, it can effectively reduce the vibration generated by the support beam during cutting, enhance the overall stability, and prevent the support assembly 1 from overturning.

[0039] In addition, it can be understood that the thickness of the lead screw can be determined according to the actual weight of the support beam to be supported. The heavier the weight to be supported, the larger the size to be selected.

[0040] The support base 13 and the top support 12 are respectively fixed on both sides of the shock absorber 11. The support base 13 includes a first crossbeam 131 and a rubber strip 132 that are fixedly connected. Preferably, the rubber strip 132 is configured as a self-adhesive rubber strip 132, which is glued to the first crossbeam 131. The first crossbeam 131 is arranged between the rubber strip 132 and the shock absorber 11. The rubber strip 132 is used to resist the support beam to be cut. Such an arrangement can play a role in noise reduction and vibration reduction. Due to the characteristics of the rubber strip 132 itself, it also has anti-slip and pressure-resistant effects. Figure 2As shown, the shock absorber 11 includes a pair of connecting plates and a plurality of springs 113. In this embodiment, the number of springs 113 is set to two. Of course, it can also be single or multiple. Such a transformation method also falls within the protection scope of the present invention. The two connecting plates are arranged in parallel, and the two connecting plates are defined as a first connecting plate 111 and a second connecting plate 112. One end of any spring 113 is fixedly connected to the first connecting plate 111, and the other end is fixedly connected to the second connecting plate 112. According to the above description, the shock absorber 11 of the present invention is a damping spring shock absorber. Such a setting can effectively reduce the vibration of the support beam during cutting and enhance the overall stability. It also has the function of assisting in adjusting the support height to ensure that the supporting assembly 1 is always tightly connected to the support beam to be cut. Specifically, as Figure 4 As shown, in this embodiment, the first connecting plate 111 is fixedly connected to the first beam 131, and the second connecting plate 112 is fixedly connected to the top plate 122. The first bolt 31 is penetrated through the first connecting plate 111 and the first beam 131, and the second bolt 32 is penetrated through the second connecting plate 112 and the top plate 122. As an optional embodiment, the first connecting plate 111 and the second connecting plate 112 can be eliminated, that is, the two ends of the spring 113 are directly connected to the first beam 131 and the top plate 122 respectively, so as to further enhance the integration without the need for additional bolts, which can effectively reduce the production cost during mass production.

[0041] More preferably, Figure 1 As shown, a steel plate support 27 is provided at one end of the column support 21 away from the fixing plate 22, and the steel plate support 27 is sleeved on the column support 21 and fixedly connected to the column support 21. With this arrangement, the steel plate support 27 can wrap the bottom of the column support 21, increase the contact surface of the support assembly with the ground, and ensure that the contact surface of the support assembly 2 with the ground is flat, so that the force transmission of the entire device is more uniform, and prevent overturning caused by unstable contact surface. A rubber pad 28 is provided at one end of the steel plate support 27 away from the column support 21, and the rubber pad 28 is adhesively connected to the steel plate support 27. The end of the rubber pad 28 away from the steel plate support 27 is configured to be flat and used to abut the ground. With this arrangement, when the rubber pad 28 is severely worn, it can be removed and replaced with a new rubber pad 28, thereby extending the service life of the support assembly 2 and the return support device. On the other hand, due to the characteristics of the rubber itself, it also has the functions of anti-slip, noise reduction, wear resistance and shock absorption.

[0042] When the top-return support device of this embodiment is used to support the support beam to be cut, Figure 5As shown, taking a support beam as an example, a cutting opening B1 and a cutting opening B2 are provided in the middle of the support beam. According to the segmented cutting length, both ends of each support beam are placed on the return support device. Each return support device is placed at a position about 400 mm away from the edge of the cutting opening B1 or the cutting opening B2. The support beam is cut along the cutting opening B1 and the cutting opening B2, and the support beam in the figure is cut into a first section support beam 100, a second section support beam 200 and a third section support beam 300. During actual operation, the cutting length of each section support beam should be reasonably controlled so that the weight of each section support beam after cutting is controlled below the maximum load-bearing weight of the return support device.

[0043] In summary, the embodiment of the present invention provides a top-return support device, which has at least the following technical effects:

[0044] When dismantling support beams of different heights, the distance between the top plate 122 and the fixed plate 22 can be adjusted by adjusting the relative positions of the snap nut 121 and the screw rod 123, that is, the overall height of the support assembly 1 and the support assembly 2 can be adjusted to adapt to the height of the support beam, thereby increasing the applicable height of the return support device in the present invention; on the other hand, since the shock absorber 11 and the top support 12 are integrated, they can effectively reduce the vibration generated by the support beam during cutting, enhance the overall stability, and prevent the support assembly 1 from overturning;

[0045] The support seat 13 includes a rubber strip 132 for contacting the support beam to be cut. The rubber strip 132 cooperates with the shock absorber 11 to reduce noise and vibration. Due to the characteristics of the rubber strip 132 itself, it also has anti-slip and pressure-resistant effects.

[0046] The shock absorber 11 of the present invention is a damping spring shock absorber, which can effectively reduce the vibration of the support beam during cutting and enhance the overall stability. It also has the function of assisting in adjusting the support height to ensure that the supporting assembly 1 always remains tightly connected with the support beam to be cut.

[0047] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Therefore, any modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A top-return support device, characterized in that: include: A supporting assembly (1) for supporting a support beam to be cut; A support assembly (2), one end of the support assembly (2) abutting against the ground, and the other end fixedly connected to the supporting assembly (1); The support assembly (1) includes an integrated shock absorber (11) and a top support (12); the support assembly (2) includes a pair of column supports (21) and a fixing plate (22) for connecting the two column supports (21); The top support (12) is arranged between the shock absorber (11) and the fixed plate (22), and the top support (12) includes a top plate (122), a screw rod (123) and a snap nut (121). One end of the screw rod (123) is fixedly connected to the top plate (122), and the other end is passed through the fixed plate (22) and is threadedly connected to the snap nut (121). The top plate (122) and the fixed plate (22) are arranged in parallel, and the snap nut (121) abuts against the fixed plate (22). By adjusting the relative positions of the snap nut (121) and the screw rod (123), the distance between the top plate (122) and the fixing plate (22) can be adjusted.

2. The top-return support device according to claim 1, characterized in that: The supporting assembly (1) further comprises a support seat (13), wherein the support seat (13) and the top support (12) are respectively fixedly arranged on both sides of the shock absorber (11), and the support seat (13) comprises a first crossbeam (131) and a rubber strip (132) which are fixedly connected, wherein the first crossbeam (131) is arranged between the rubber strip (132) and the shock absorber (11), and the rubber strip (132) is used to abut against the support beam to be cut.

3. The top-return support device according to claim 1, characterized in that: The two upright pillars (21) are configured in an eight-shaped configuration.

4. The top-return support device according to claim 1 or 3, characterized in that: A steel plate support (27) is provided at one end of the column support (21) away from the fixed plate (22), and the steel plate support (27) is sleeved on the column support (21) and fixedly connected to the column support (21).

5. The top-return support device according to claim 4, characterized in that: A rubber pad (28) is provided at one end of the steel plate support (27) away from the column support (21), and the rubber pad (28) and the steel plate support (27) are adhesively connected. The end of the rubber pad (28) away from the steel plate support (27) is configured as a plane for contacting the ground.

6. The top-return support device according to claim 2, characterized in that: The shock absorber (11) includes a pair of connecting plates and a plurality of springs (113). The two connecting plates are arranged in parallel and are defined as a first connecting plate (111) and a second connecting plate (112). One end of any one of the springs (113) is fixedly connected to the first connecting plate (111), and the other end is fixedly connected to the second connecting plate (112).

7. The top-return support device according to claim 6, characterized in that: One of the first connecting plate (111) and the second connecting plate (112) is fixedly connected to the first crossbeam (131), and the other is fixedly connected to the top plate (122).

8. The top-return support device according to claim 3, characterized in that: A first longitudinal beam (23) and a second longitudinal beam (25) are provided in parallel between the two column supports (21), the two ends of the first longitudinal beam (23) are respectively fixedly connected to the two column supports (21), and the two ends of the second longitudinal beam (25) are also respectively fixedly connected to the two column supports (21).

9. The top-return support device according to claim 8, characterized in that: The support assembly (2) further comprises a second crossbeam (24) and a third crossbeam (26) arranged in parallel, one of the second crossbeam (24) and the third crossbeam (26) being fixedly connected to the first longitudinal beam (23), and the other being fixedly connected to the second longitudinal beam (25).

10. The top-return support device according to claim 9, characterized in that: The extending direction of the first longitudinal beam (23) and the second longitudinal beam (25) is defined as the X direction, that is, the direction from one column support (21) to the other column support (21) is defined as the X direction; the direction from the second longitudinal beam (25) to the first longitudinal beam (23) is defined as the Y direction; and the extending direction of the second cross beam (24) and the third cross beam (26) is defined as the Z direction; The X direction, the Y direction, and the Z direction are perpendicular to each other.

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