Supporting device and method for building foundation pit construction

Abstract

The invention belongs to the technical field of foundation pit supporting, and discloses a supporting device and method for building foundation pit construction. An adjustment chamber; two telescopic cavities; one ends of the two supporting pieces are connected to the two telescopic cavities in a depth-adjustable mode, and the other ends of the two supporting pieces are used for abutting against the two to-be-supported side walls of the foundation pit correspondingly; the driving assembly comprises a two-way screw rod, a worm gear and a worm, the two-way screw rod is rotatably connected to the adjusting cavity, the two ends of the two-way screw rod extend out of the adjusting cavity to the two telescopic cavities respectively and are in threaded connection with the supporting pieces inserted into the corresponding telescopic cavities respectively, one end of the worm is rotatably connected to the interior of the adjusting cavity and engaged with the worm gear, and the other end of the worm is engaged with the worm gear. The other end of the worm extends out of the adjusting cavity to the top of the adjusting box. And a limiting assembly. The lengths of the side plates on the two sides of the adjusting box can be properly adjusted according to the width of a foundation pit, so that the adjusting box can be flexibly suitable for foundation pits with different widths, and the applicability is higher.

Description

Technical Field

[0001] The invention belongs to the technical field of foundation pit support, and in particular relates to a supporting device and a supporting method for building foundation pit construction. Background Art

[0002] Deep foundation pit engineering refers to the earthwork excavation, support, and dewatering engineering of foundation pits with an excavation depth of more than 5m, or the earthwork excavation and support of foundation pits with an excavation depth of less than 5m but complex geological conditions, surrounding environment, and underground pipelines, or affecting the safety of adjacent buildings. When constructing deep foundation pits, support structures are required to reinforce the edges of deep foundation pits. Deep foundation pit support refers to the support, reinforcement, and protection measures adopted for the side walls and surrounding environment of deep foundation pits to ensure the safety of underground structure construction and the surrounding environment of the foundation pits.

[0003] Most of the existing foundation pit support devices are cast with concrete, but concrete casting is only suitable for foundation pits with larger widths. It is inconvenient to use when encountering smaller foundation pits and the supporting strength is not high. There are also double-sided support plates for support, but this method is mostly unable to adjust the spacing between the double-sided support plates, which is inconvenient to use according to different foundation pit widths, reducing the practicality of the support device; therefore, we propose a support device and support method for building foundation pit construction to solve the above problems. Summary of the invention

[0004] In order to solve the above problems, the present invention provides a supporting device and a supporting method for building foundation pit construction, which solves the problem of not being able to adapt to foundation pits of different widths.

[0005] The present invention is implemented by the following scheme: A supporting device for building foundation pit construction, comprising:

[0006] Adjustment box;

[0007] An adjustment chamber, arranged in the middle of the adjustment box;

[0008] Two telescopic cavities are respectively arranged at two ends of the inside of the regulating box and located on both sides of the regulating cavity;

[0009] Two supporting members, one end of which is respectively inserted into the two telescopic cavities with adjustable depth, and the other end of which is respectively used to abut against the two side walls of the foundation pit to be supported;

[0010] A driving assembly, comprising a bidirectional screw, a worm wheel and a worm, wherein the bidirectional screw is rotatably connected to the adjustment cavity, and both ends of the bidirectional screw extend out of the adjustment cavity to two telescopic cavities and are respectively threadedly connected to supporting members inserted into the corresponding telescopic cavities, the worm wheel is located in the adjustment cavity and fixed to the outside of the bidirectional screw, one end of the worm is rotatably connected to the adjustment cavity and meshes with the worm wheel, and the other end of the worm extends out of the adjustment cavity to the top of the adjustment box; and

[0011] The limit assembly is used to limit the two supporting parts from rotating with the bidirectional screw.

[0012] A further improvement of the support device for building foundation pit construction of the present invention is that it also includes a stopper; the stopper includes a positioning rod, an adjusting disk fixedly connected to the other end of the worm, a positioning hole penetrating along the thickness direction of the adjusting disk, and a plurality of positioning ports opened at the top of the adjusting box and arranged along a ring. The positioning rod is passed through the positioning hole and selectively inserted into the positioning port to prevent the worm wheel from rotating.

[0013] A further improvement of the supporting device for building foundation pit construction of the present invention is that it also includes a supporting member, which is arranged between the adjustment box and the bottom of the foundation pit and is used to support the adjustment box;

[0014] The support member comprises a ground-inserting rod, one end of which is fixedly connected to the bottom of the adjustment box, and the other end of which is tapered and used for being inserted into the bottom of the foundation pit.

[0015] A further improvement of the support device for building foundation pit construction of the present invention is that the support member also includes a plurality of auxiliary insertion rods and a fixing ring fixed to the outside of the ground insertion rod, one end of the plurality of auxiliary insertion rods is arranged and fixed at intervals along the circumference of the fixing ring, and the other end is conical and used to be inserted into the bottom of the foundation pit.

[0016] A further improvement of the support device for building foundation pit construction of the present invention is that each of the support members includes an adjusting cylinder and a supporting plate, one end of the adjusting cylinder is inserted into the corresponding telescopic cavity and screwed onto one end of the bidirectional screw, and the other end extends out of the telescopic cavity and is connected and fixed to one side of the supporting plate, and the other side of the supporting plate is used to abut against the side wall of the foundation pit to be supported.

[0017] A further improvement of the supporting device for building foundation pit construction of the present invention is that the limiting assembly includes at least one limiting rod, and the limiting rod is telescopically fixed between the supporting plates of the two supporting members along a direction parallel to the axis of the adjustment cylinder.

[0018] A further improvement of the support device for building foundation pit construction of the present invention is that the limit rod includes two rod segments, a side frame fixed on the adjustment box, and two through openings respectively opened at both ends of the side frame and corresponding to the two rod segments, one end of the two rod segments is respectively connected and fixed to two supporting plates, and the other end is inserted into the corresponding through opening.

[0019] A further improvement of the supporting device for building foundation pit construction of the present invention is that a first reinforcing member for fixing the supporting plate to the corresponding side wall of the foundation pit to be supported is provided on the supporting plate;

[0020] The first reinforcement member includes a fixing nail and a mounting hole that penetrates along the thickness direction of the supporting plate. The fixing nail passes through the mounting hole and is nailed into the side wall of the foundation pit to be supported.

[0021] A further improvement of the supporting device for building foundation pit construction of the present invention is that the supporting member also includes a bottom plate connected to the supporting plate and used to abut against the bottom of the foundation pit, and a second reinforcing member used to connect the bottom plate, the supporting plate and the adjusting cylinder into a whole.

[0022] A supporting method for building foundation pit construction comprises the following steps:

[0023] Providing a support device as described above, and rotating the worm in a first direction to bring the two support members closer together to retract the support device;

[0024] The retracted support device is placed in the foundation pit, and the two support members are respectively directed toward the two side walls of the foundation pit to be supported;

[0025] Lift the support device to the support height, and then rotate the worm screw in the second direction so that the two support members are relatively separated to extend until they respectively abut against the two side walls.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] The present invention can appropriately adjust the length of the side panels on both sides of the adjustment box according to the width of the foundation pit, so that it can be flexibly adapted to foundation pits of different widths and has stronger applicability; by arranging the first reinforcement member and the second reinforcement member on the support plate, the connection strength between the support plate and the foundation pit wall can be ensured, and by arranging the ground rod and the auxiliary rod, it is used to support the adjustment box and increase the connection strength between the overall structure and the foundation pit. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 The overall structural diagram of the present invention is shown.

[0029] Figure 2 A front view schematic diagram of the support device of the present invention is shown.

[0030] Figure 3 A schematic top view of the support device of the present invention is shown.

[0031] Figure 4 The figure shows the position diagram of the ground-inserting rod of the present invention.

[0032] Figure 5 The figure shows a schematic diagram of the internal cross-sectional structure of the regulating box of the present invention.

[0033] Figure 6 A schematic diagram of the structure of the stopper of the present invention is shown.

[0034] In the figure: 1. adjusting box; 101. adjusting cavity; 102. telescopic cavity; 2. supporting plate; 3. adjusting cylinder; 4. limiting assembly; 401. side frame; 402. notch; 403. limiting plate; 404. limiting block; 405. rod section; 5. fixing nail; 6. supporting member; 601. ground rod; 602. fixing ring; 603. auxiliary plug rod; 7. second reinforcement member; 701. reinforcement plate; 702. bottom plate; 7021. socket; 703. reinforcement rod; 8. driving assembly; 801. worm gear; 802. partition; 803. bidirectional screw; 804. worm; 805. stopper; 8051. adjusting disk; 8052. positioning hole; 8053. positioning port. DETAILED DESCRIPTION

[0035] In order to solve the problem of not being able to adapt to foundation pits of different widths, the present invention provides a support device and a support method for building foundation pit construction. The following is a further description of the support device and the support method for building foundation pit construction with specific embodiments combined with the accompanying drawings.

[0036] See also Figure 1 to Figure 6 As shown, a supporting device for building foundation pit construction comprises:

[0037] Adjustment box 1;

[0038] The regulating chamber 101 is arranged in the middle of the regulating box 1;

[0039] Two telescopic chambers 102 are respectively arranged at two ends of the inside of the regulating box 1 and located on both sides of the regulating chamber 101;

[0040] Two supporting members, one end of which is respectively inserted into the two telescopic cavities 102 with adjustable depth, and the other end of which is respectively used to abut against the two side walls of the foundation pit to be supported;

[0041] A driving assembly 8, comprising a bidirectional screw 803, a worm wheel 801 and a worm 804, wherein the bidirectional screw 803 is rotatably connected to the adjusting chamber 101, and both ends of the bidirectional screw 803 extend out of the adjusting chamber 101 to two telescopic chambers 102 and are respectively threadedly connected to supporting members inserted into the corresponding telescopic chambers 102, the worm wheel 801 is located in the adjusting chamber 101 and fixed to the outside of the bidirectional screw 803, one end of the worm 804 is rotatably connected to the adjusting chamber 101 and meshes with the worm wheel 801, and the other end of the worm 804 extends out of the adjusting chamber 101 to the top of the adjusting box 1; and

[0042] The limiting assembly 4 is used to limit the two supporting members from rotating along with the bidirectional screw 803 .

[0043] For details, see Figure 5As shown, two oppositely disposed partitions 802 are disposed inside the regulating box 1, an regulating chamber 101 is formed between the two partitions 802, two telescopic chambers 102 are formed between the two partitions 802 and the two ends of the regulating box 1, and a bidirectional screw 803 is rotatably connected to the two partitions 802;

[0044] By rotating the worm 804, the meshing worm wheel 801 can be driven to rotate, and then the bidirectional screw 803 can be driven to rotate. Since the support parts at both ends are respectively threadedly connected to the two ends of the bidirectional screw 803 and the limiting assembly 4 limits the two support parts, the support parts at both ends can be inserted into the telescopic cavity 102 to adjust the depth as the bidirectional screw 803 rotates, thereby adjusting the length of the support parts at both ends to adapt to foundation pits of different widths.

[0045] Among them, see Figure 6 As shown, a stopper 805 is also included; the stopper 805 includes a positioning rod, an adjusting disk 8051 fixedly connected to the other end of the worm 804, a positioning hole 8052 penetrating along the thickness direction of the adjusting disk 8051, and a plurality of positioning openings 8053 opened at the top of the adjusting box 1 and arranged along a ring. The positioning rod is passed through the positioning hole 8052 and selectively inserted into the positioning opening 8053 to prevent the worm wheel 801 from rotating.

[0046] By adopting the above design, the worm 804 can be locked by passing the positioning rod through the positioning hole 8052 and inserting it into the corresponding positioning port 8053, thereby locking the two supporting members that are against the foundation pit wall, avoiding the contraction of the two supporting members after adjustment, and improving the supporting effect.

[0047] Among them, see Figure 1 As shown, it also includes a support member 6, which is arranged between the adjustment box 1 and the bottom of the foundation pit and is used to support the adjustment box 1;

[0048] The support member 6 includes a ground-inserting rod 601, one end of which is fixedly connected to the bottom of the adjustment box 1, and the other end of which is tapered and used to be inserted into the bottom of the foundation pit;

[0049] The support member 6 also includes a plurality of auxiliary insertion rods 603 and a fixing ring 602 fixed to the outside of the ground insertion rod 601. One end of the plurality of auxiliary insertion rods 603 is arranged and fixed along the fixing ring 602 at intervals in the circumferential direction, and the other end is tapered and used to be inserted into the bottom of the foundation pit.

[0050] By adopting the above design, the ground-inserting rod 601 and the auxiliary insertion rod 603 are inserted into the bottom of the foundation pit, so that the whole is placed in the foundation pit, thereby improving the stability of the entire foundation pit support.

[0051] Among them, see Figure 1 and 5As shown, each supporting member includes an adjusting cylinder 3 and a supporting plate 2. One end of the adjusting cylinder 3 is inserted into the corresponding telescopic cavity 102 and is screwed onto one end of the bidirectional screw 803. The other end extends out of the telescopic cavity 102 and is connected and fixed to one side of the supporting plate 2. The other side of the supporting plate 2 is used to abut against the side wall of the foundation pit to be supported.

[0052] By adopting the above-mentioned design, one end of the support plate 2 is in contact with the wall of the foundation pit, and the other side is fixed to the adjusting cylinder 3. A thread is provided on the inner wall of the adjusting cylinder 3, and the adjusting cylinder 3 is threadedly sleeved on the threaded section at one end of the bidirectional screw 803. When the bidirectional screw 803 rotates, the adjusting cylinder 3 can be controlled to adjust the insertion depth of the telescopic cavity 102, thereby controlling the support plates 2 at both ends to adjust their positions.

[0053] Among them, see Figure 3 As shown, the limiting assembly 4 includes at least one limiting rod, which is telescopically fixed between the supporting plates 2 of the two supporting members along a direction parallel to the axis of the adjusting cylinder 3;

[0054] The limiting rod includes two rod segments 405, a side frame 401 fixed on the adjustment box 1, and two through openings respectively opened at both ends of the side frame 401 and corresponding to the two rod segments 405. One end of the two rod segments 405 is respectively connected and fixed to the two supporting plates 2, and the other end is inserted into the corresponding through opening.

[0055] For details, see Figure 3 As shown, a slot 402 connected to the through openings at both ends is provided on the side frame 401, and a rod segment 405 is inserted into one end of the corresponding through opening and extends out of the through opening to the slot 402, and a limiting plate 403 is fixedly connected to the end, and a limiting block 404 located between the two limiting plates 403 is fixedly connected inside the slot 402. By setting the limiting plate 403, the rod segment 405 can be limited to prevent the rod segment 405 from being separated from the slot 402, so as to limit the adjusting cylinder 3 and prevent it from being separated from the telescopic cavity 102;

[0056] Furthermore, in this embodiment, there are two limit rods. By adopting the above-mentioned design, the adjustment cylinder 3 can be limited so that it does not rotate with the bidirectional screw 803, and when the bidirectional screw 803 rotates, the adjustment cylinder 3 is driven by the thread to perform telescopic adjustment; at the same time, the rod sections 405 at both ends can also reinforce the support plate 2 to improve stability.

[0057] Among them, see Figure 2 As shown, the support plate 2 is provided with a first reinforcement member for fixing the support plate 2 to the corresponding side wall of the foundation pit to be supported;

[0058] The first reinforcement member includes a fixing nail 5 and a mounting hole penetrating along the thickness direction of the supporting plate 2. The fixing nail 5 passes through the mounting hole and is nailed into the side wall of the foundation pit to be supported.

[0059] By adopting the above design, the fixing nails 5 are passed through the installation holes and nailed into the foundation pit wall, so that the support plate 2 can be reinforced to contact with the foundation pit wall, thereby improving the supporting effect of the support plate 2.

[0060] Among them, see Figure 1 As shown, the supporting member also includes a bottom plate 702 connected to the supporting plate 2 and used to abut against the bottom of the foundation pit, and a second reinforcing member 7 used to connect the bottom plate 702, the supporting plate 2 and the adjusting cylinder 3 into a whole.

[0061] For details, see Figure 4 As shown, the second reinforcement member 7 includes a reinforcement rod 703 and a reinforcement plate 701. One end of the reinforcement plate 701 is fixed to the support plate 2, and the other end is fixed to the outside of the adjustment tube 3. The reinforcement rod 703 is arranged between the reinforcement plate 701 and the bottom plate 702. A plug hole 7021 is penetrated along the thickness direction of the bottom plate 702. A fixing rod is arranged inside the plug hole 7021. The fixing rod passes through the plug hole 7021 and is inserted into the soil at the bottom of the foundation pit, so that the bottom plate 702 can be positioned.

[0062] Furthermore, the support of the support plate 2 to the foundation pit wall can be strengthened by the reinforcement plate 701, the bottom plate 702 and the reinforcement rod 703, thereby improving the support effect; the reinforcement rod 703 is detachably connected between the reinforcement plate 701 and the bottom plate 702 by bolts.

[0063] A supporting method for building foundation pit construction comprises the following steps:

[0064] Provide the support device as described above, and rotate the worm 804 in a first direction (clockwise / counterclockwise) so that the adjustment cylinders 3 at both ends respectively bring the two support plates 2 closer to each other to shrink the support device;

[0065] The retracted support device is placed in the foundation pit, and the two support plates 2 are respectively directed to the two side walls of the foundation pit to be supported;

[0066] First, the ground insertion rod 601 and the auxiliary insertion rod 603 are inserted to a certain depth at the bottom of the foundation pit, and then the worm 804 is rotated in the second direction (counterclockwise / clockwise) to extend the two adjustment cylinders 3 so that the support plates 2 are relatively separated until they are respectively in contact with the two side walls;

[0067] Then continue to insert the ground-inserting rod 601 and the auxiliary insertion rod 603 into the bottom of the foundation pit, so that the bottom of the bottom plates 702 at both ends abuts against the bottom of the foundation pit;

[0068] Continue to rotate the worm 804 in the second direction (counterclockwise / counterclockwise) so that the two support plates 2 respectively abut against the two side walls;

[0069] Pass the fixing nails 5 on the supporting plates 2 at both ends through the corresponding mounting holes and nail them into the corresponding foundation pit walls;

[0070] Pass the fixing rod through the socket 7021 and insert it into the bottom of the foundation pit.

[0071] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0072] The present invention is described in detail above in conjunction with the embodiments of the accompanying drawings. A person skilled in the art can make various variations of the present invention according to the above description. Therefore, certain details in the embodiments should not constitute a limitation of the present invention, and the scope of protection of the present invention shall be defined by the scope of the attached claims.

Claims

1. A supporting device for construction of a building foundation pit, characterized in that: include: Adjustment box; An adjustment chamber, arranged in the middle of the adjustment box; Two telescopic cavities are respectively arranged at two ends of the inside of the regulating box and located on both sides of the regulating cavity; Two supporting members, one end of which is respectively inserted into the two telescopic cavities with adjustable depth, and the other end of which is respectively used to abut against the two side walls of the foundation pit to be supported; A driving assembly, comprising a bidirectional screw, a worm wheel and a worm, wherein the bidirectional screw is rotatably connected to the adjustment cavity, and both ends of the bidirectional screw extend out of the adjustment cavity to two telescopic cavities and are respectively threadedly connected to support members inserted into the corresponding telescopic cavities, the worm wheel is located in the adjustment cavity and fixed to the outside of the bidirectional screw, one end of the worm is rotatably connected to the adjustment cavity and meshes with the worm wheel, and the other end of the worm extends out of the adjustment cavity to the top of the adjustment box; as well as The limit assembly is used to limit the two supporting parts from rotating with the bidirectional screw.

2. The supporting device for construction of a building foundation pit according to claim 1, characterized in that: It also includes a stopper; the stopper includes a positioning rod, an adjusting disk fixedly connected to the other end of the worm, a positioning hole penetrating along the thickness direction of the adjusting disk, and a plurality of positioning ports opened at the top of the adjusting box and arranged along a ring. The positioning rod is passed through the positioning hole and selectively inserted into the positioning port to prevent the worm wheel from rotating.

3. The supporting device for construction of a building foundation pit according to claim 1, characterized in that: It also includes a support member, which is arranged between the adjustment box and the bottom of the foundation pit and is used to support the adjustment box; The support member comprises a ground-inserting rod, one end of which is fixedly connected to the bottom of the adjustment box, and the other end of which is tapered and used for being inserted into the bottom of the foundation pit.

4. The supporting device for construction of a building foundation pit as claimed in claim 3, characterized in that: The support member also includes a plurality of auxiliary insertion rods and a fixing ring fixed to the outside of the ground insertion rod. One end of the plurality of auxiliary insertion rods is arranged and fixed along the circumference of the fixing ring at intervals, and the other end is conical and used to be inserted into the bottom of the foundation pit.

5. The supporting device for construction of a building foundation pit according to claim 1, characterized in that: Each of the supporting members includes an adjusting cylinder and a supporting plate. One end of the adjusting cylinder is inserted into the corresponding telescopic cavity and screwed onto one end of the bidirectional screw, and the other end extends out of the telescopic cavity and is connected and fixed to one side of the supporting plate. The other side of the supporting plate is used to abut against the side wall of the foundation pit to be supported.

6. The supporting device for construction of a building foundation pit as claimed in claim 5, characterized in that: The limiting assembly comprises at least one limiting rod, and the limiting rod is telescopically fixed between the supporting plates of the two supporting members along a direction parallel to the axis of the adjusting cylinder.

7. The supporting device for construction of a building foundation pit according to claim 6, characterized in that: The limiting rod includes two rod segments, a side frame fixed on the adjustment box, and two through holes respectively opened at both ends of the side frame and corresponding to the two rod segments. One end of the two rod segments is respectively connected and fixed to two supporting plates, and the other end is inserted into the corresponding through hole.

8. The supporting device for construction of a building foundation pit as claimed in claim 5, characterized in that: The support plate is provided with a first reinforcement member for fixing the support plate to the corresponding side wall of the foundation pit to be supported; The first reinforcement member includes a fixing nail and a mounting hole that penetrates along the thickness direction of the supporting plate. The fixing nail passes through the mounting hole and is nailed into the side wall of the foundation pit to be supported.

9. The supporting device for construction of a building foundation pit as claimed in claim 5, characterized in that: The supporting member also includes a bottom plate connected to the supporting plate and used to abut against the bottom of the foundation pit, and a second reinforcing member used to connect the bottom plate, the supporting plate and the adjusting cylinder into a whole.

10. A supporting method for building foundation pit construction, characterized in that: The steps include: Providing the support device as claimed in claim 1, and rotating the worm in a first direction to bring the two support members closer to each other to contract the support device; The retracted support device is placed in the foundation pit, and the two support members are respectively directed toward the two side walls of the foundation pit to be supported; Lift the support device to the support height, and then rotate the worm screw in the second direction so that the two support members are relatively separated to extend until they respectively abut against the two side walls.

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