Supporting device for underground excavation of rock soil

Abstract

The utility model relates to the technical field of foundation pit excavation supporting, and provides a supporting device for rock-soil underground excavation, which comprises a first supporting assembly (1) and a second supporting assembly (2), the first supporting assembly (1) comprises a first supporting main plate (11), two ends of the first supporting main plate (11) are connected with first extension plates (12) in a sliding manner, the second supporting assembly (2) comprises a second supporting main plate (21), and the first extension plates (12) are connected with the second extension plates (12) in a sliding manner. The two ends of the second supporting main plate (21) are both connected with second extension plates (22) in a sliding mode, a third adjusting assembly (6) used for supporting is arranged between the first extension plate (12) and the second extension plates (22), and moving assemblies (7) are arranged on the first supporting main plate (11) and the second supporting main plate (21). The supporting area can be adjusted in the length direction of a foundation pit, and the device is convenient to move.

Description

Technical Field

[0001] The utility model relates to the technical field of foundation pit excavation support, and more specifically, particularly relates to a support device for underground rock excavation. Background Art

[0002] Foundation pit engineering is a systematic project that integrates geological engineering, geotechnical engineering, structural engineering and geotechnical testing technology. Its main contents include engineering investigation, support structure design and construction, earth excavation and backfilling, groundwater control, information construction and surrounding environmental protection. The simplest and most economical way to construct a foundation pit is to excavate on a larger slope, but it is often restricted by site conditions and the surrounding environment. Therefore, it is necessary to design a support system to ensure the smooth progress of the construction and better protect the surrounding environment.

[0003] Announcement No. CN217536998U discloses a foundation pit support structure for foundation pit excavation, including two support plates, an adjustment assembly is provided on one side of the two support plates, a fixing assembly is provided on one side of the two support plates, and the fixing assembly includes a connecting plate fixedly connected to one side of the two support plates, and grooves are provided inside the two connecting plates. The foundation pit support structure for foundation pit excavation, when the supporting device completes the support of the foundation pit, by pulling the pull cap to the side close to the threaded rod, the movement of the pull cap drives the connecting rod to move, the movement of the connecting rod drives the movement of the slide plate, the movement of the slide plate drives the movable rod to rotate, the rotation of the movable rod drives the slider to move relatively, the movement of the slide plate drives the clamping rod to move, when the clamping rod is separated from the clamping hole, the two support plates are moved to the side away from the pull cap, so that the support plates can be separated from the fixing assembly, and the effect of easy disassembly and easy carrying and movement can be achieved. However, the supporting structure in the prior art cannot adjust the supporting area along the length direction of the foundation pit, and it is not convenient to move the device. Utility Model Content

[0004] In order to overcome the above-mentioned shortcomings, the utility model aims to provide a supporting device for underground excavation of rock and soil, which can adjust the supporting area along the length direction of the foundation pit and is convenient for moving the device.

[0005] A support device for underground excavation in rock soil, comprising a first support assembly and a second support assembly for supporting a side wall of a foundation pit, a first adjustment assembly and a second adjustment assembly being connected between the first support assembly and the second support assembly, a driving assembly being arranged between the first adjustment assembly and the second adjustment assembly, the first support assembly comprising a first support main board, both ends of which are slidably connected to a first extension plate, the second support assembly comprising a second support main board, both ends of which are slidably connected to a second extension plate, a third adjustment assembly for support being arranged between the first extension plate and the second extension plate, and a moving assembly for facilitating movement of the device being arranged on the first support main board and the second support main board.

[0006] Furthermore, the first adjustment component includes two first pillars fixedly connected to the first supporting main board, a first sliding column is slidably connected inside the first pillar, the first sliding column is fixed to the second supporting main board, a first long hole connected to the interior of the two first pillars is provided on one side where the two first pillars are close to each other, and also includes a first movable plate fixed to the first pillars at both ends.

[0007] Furthermore, the first movable plate slides in the first elongated hole.

[0008] Furthermore, the second adjustment component includes two second pillars fixedly connected to the first supporting main board, a second sliding column is slidably connected inside the second pillar, the second sliding column is fixed to the second supporting main board, a second long hole connected to the interior of the two second pillars is provided on one side where the two second pillars are close to each other, and also includes a second movable plate fixed to the second pillars at both ends.

[0009] Furthermore, the second movable plate slides in the second elongated hole.

[0010] Furthermore, the driving assembly includes a servo motor fixedly mounted on the first supporting main board, the output end of the servo motor is fixedly connected to a first threaded rod threadedly connected to the first movable plate, and also includes a second threaded rod with one end rotatably connected to the first supporting main board and the other end passing through and threadedly connected to the second movable plate, a first pulley is fixedly connected to the first threaded rod, a second pulley is fixedly connected to the second threaded rod, and the first pulley and the second pulley are connected by a transmission belt.

[0011] Furthermore, the third adjustment component includes a third pillar rotatably connected to the second extension plate, the free end of the third pillar is slidably connected to a third sliding column, one end of the third sliding column located outside the third pillar is fixedly connected to a tooth plate, the first extension plate is provided with a tooth groove matching the tooth plate, a plurality of third plug holes are evenly spaced on the third sliding column, and a third plug rod matching the third plug holes is inserted on the third pillar.

[0012] Further, the moving component includes a mounting frame fixedly connected to the first supporting main board or the second supporting main board, a rotating rod is rotatably connected inside the mounting frame, a fixed block is fixedly connected to the rotating rod, a universal wheel is arranged on the fixed block, a fourth socket is opened on the fixed block, and a fourth plug rod adapted to the fourth socket is inserted into the mounting frame.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] ① In the utility model, by moving the two first extension plates in directions away from each other and moving the two second extension plates in directions away from each other, the supporting areas of the first support assembly and the second support assembly can be adjusted along the length direction of the foundation pit, and the third insertion rod is passed through the third pillar and inserted into the third insertion hole at a suitable position, so that the relative positions of the third pillar and the third sliding column can be fixed so that the total length of the two remains unchanged, and the third adjustment assembly is between the first extension plate and the second extension plate, and the first extension plate and the second extension plate support the two side walls of the foundation pit.

[0015] ② The fourth plug rod, the fixed block and the mounting frame cooperate to prevent the fixed block from rotating, so that the universal wheel can be used in a stable rolling manner. The moving assembly is provided to facilitate the movement of the device. After moving to the supporting location, the fourth plug rod is pulled out to rotate the universal wheel to the side of the first supporting main board or the second supporting main board away from the side wall of the foundation pit, so that the moving assembly does not affect the use of the supporting device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0017] Figure 1 This is a schematic diagram of the overall structure of a support device for underground excavation in rock and soil when extended. Figure 1 ;

[0018] Figure 2 This is a schematic diagram of the overall structure of a support device for underground excavation in rock and soil when extended. Figure 2 ;

[0019] Figure 3 yes Figure 1 The enlarged view of point A in the middle;

[0020] Figure 4 It is a top view schematic diagram of a support device for underground excavation in rock and soil when it is folded;

[0021] Figure 5 The invention is a schematic diagram of a support device for underground excavation in rock and soil when it is folded up;

[0022] Figure 6 This is a schematic diagram of a mobile component. Figure 1 ;

[0023] Figure 7 This is a schematic diagram of a mobile component. Figure 2 .

[0024] In the figure: 1, first support assembly; 11, first support main board; 12, first extension board; 2, second support assembly; 21, second support main board; 22, second extension board; 3, first adjustment assembly; 31, first pillar; 311, first long hole; 32, first slide column; 321, first plug hole; 33, first movable plate; 34, first plug rod; 4, second adjustment assembly; 41, second pillar; 411, second long hole; 42, second slide column; 421, second plug hole; 43, second movable plate; 44, second plug rod ; 5. Driving assembly; 51. Servo motor; 52. First threaded rod; 53. Second threaded rod; 54. First pulley; 55. Second pulley; 56. Transmission belt; 6. Third adjusting assembly; 61. Third pillar; 62. Third slide column; 621. Third plug hole; 63. Tooth plate; 64. Tooth groove; 65. Third plug rod; 66. Step block; 7. Moving assembly; 71. Mounting frame; 72. Rotating rod; 73. Fixed block; 74. Universal wheel; 75. Fourth plug hole; 76. Fourth plug rod; 77. Stop block; 8. Lifting ring. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Specific embodiment:

[0027] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5As shown, a support device for underground excavation of rock and soil comprises a first support assembly 1 and a second support assembly 2 for supporting the side wall of a foundation pit, a first adjustment assembly 3 and a second adjustment assembly 4 are connected between the first support assembly 1 and the second support assembly 2, and the first adjustment assembly 3 and the second adjustment assembly 4 are used to adjust the distance between the first support assembly 1 and the second support assembly 2 according to the width of the foundation pit, so as to support the side wall of the foundation pit; a driving assembly 5 is arranged between the first adjustment assembly 3 and the second adjustment assembly 4, and is used to drive the first adjustment assembly 3 and the second adjustment assembly 4, the first support assembly 1 comprises a first support main board 11, and both ends of the first support main board 11 are slidably connected with a first extension plate 12, the second support assembly 2 comprises a second support main board 21, and both ends of the second support main board 21 are slidably connected with a second extension plate 22, and a third adjustment assembly 6 is arranged between the first extension plate 12 and the second extension plate 22, and the third adjustment assembly 6 is used to support the first extension plate 12 and the second extension plate 22. By moving the two first extension plates 12 away from each other and moving the two second extension plates 22 away from each other, the support area of ​​the first support assembly 1 and the second support assembly 2 can be adjusted along the length direction of the foundation pit.

[0028] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 As shown, the first adjustment component 3 includes two first pillars 31 fixedly connected to the first supporting main board 11, a first sliding column 32 is slidably connected in the first pillar 31, and one end of the first sliding column 32 located outside the first pillar 31 is fixedly connected to the second supporting main board 21, and a first elongated hole 311 connected to the interior of the two first pillars 31 is opened on the side where the two first pillars 31 are close to each other, and also includes a first movable plate 33 whose two ends slide in the first elongated holes 311 on the same side, and the two ends of the first movable plate 33 are respectively fixedly connected to the first pillars 31 on the same side; the second adjustment component 4 includes two second pillars 41 fixedly connected to the first supporting main board 11, a second sliding column 42 is slidably connected in the second pillar 41, and one end of the second sliding column 42 located outside the second pillar 41 is fixedly connected to the second supporting main board 21, and a second elongated hole 411 connected to the interior of the two second pillars 41 is opened on the side where the two second pillars 41 are close to each other, and also includes a second movable plate 43 whose two ends slide in the second elongated holes 411 on the same side, and the two ends of the second movable plate 43 are respectively fixedly connected to the second pillar 41 on the same side.

[0029] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5As shown, the drive assembly 5 includes a servo motor 51 fixedly mounted on the first supporting main board 11, the servo motor 51 is electrically connected to an external power supply and to a control unit (not shown in the figure), the output end of the servo motor 51 is fixedly connected to a first threaded rod 52, the first threaded rod 52 passes through and is threadedly connected to the first movable plate 33, and also includes a second threaded rod 53 rotatably connected to the first supporting main board 11 through a bearing seat (not shown in the figure) and located directly below the first threaded rod 52, the second threaded rod 53 passes through and is threadedly connected to the second movable plate 43, a first pulley 54 is fixedly connected to the first threaded rod 52, a second pulley 55 is fixedly connected to the second threaded rod 53, and the first pulley 54 and the second pulley 55 are connected through a transmission belt 56. The first threaded rod 52 is rotated through the rotation output of the servo motor 51, and the first pulley 54, the second pulley 55 and the transmission belt 56 cooperate to make the second threaded rod 53 rotate synchronously. The first movable plate 33 and the second movable plate 43 can only move horizontally under the restriction of the first long hole 311 and the second long hole 411 respectively, so as to adjust the distance between the first support assembly 1 and the second support assembly 2, thereby supporting the side wall of the foundation pit.

[0030] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 As shown, the third adjusting component 6 includes a third pillar 61 rotatably connected to the second extension plate 22, the free end of the third pillar 61 is slidably connected to the third sliding post 62, the end of the third sliding post 62 located outside the third pillar 61 is fixedly connected to the tooth plate 63, and also includes a tooth groove 64 provided on the first extension plate 12 and adapted to the tooth plate 63. When the third pillar 61 is perpendicular to the second extension plate 22, the tooth plate 63 is brought close to the tooth groove 64 by sliding the third sliding post 62, so that the tooth block of the tooth plate 63 can be just inserted into the tooth groove 64 and abut against the inner wall of the tooth groove 64. A plurality of third plug holes 621 are evenly spaced on the third sliding post 62, and a third plug rod 65 adapted to the third plug hole 621 is inserted on the third pillar 61. When the tooth block on the tooth plate 63 is inserted into the tooth groove 64 After the third rod 65 is in contact with the inner wall of the tooth groove 64, the third plug rod 65 is passed through the third pillar 61 and inserted into the third plug hole 621 at a suitable position, so that the relative positions of the third pillar 61 and the third sliding column 62 can be fixed, so that the total length of the two remains unchanged, and the third adjusting component 6 is between the first extension plate 12 and the second extension plate 22, and the first extension plate 12 and the second extension plate 22 support the two side walls of the foundation pit. The third adjusting component 6 also includes a block 66 fixedly connected to the first sliding column 32 and the second sliding column 42. If the first extension plate 12 and the second extension plate 22 do not extend out and the third adjusting component 6 does not need to be supported, the third pillar 61 is rotated and the tooth plate 63 is inserted between the block 66 and the second supporting main board 21, so that the third adjusting component 6 can be retracted.

[0031] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 As shown, a plurality of first plug holes 321 are opened at equal intervals on the first slide column 32, a first plug rod 34 adapted to the first plug holes 321 is inserted on the first support column 31, a plurality of second plug holes 421 are opened at equal intervals on the second slide column 42, a second plug rod 44 adapted to the second plug hole 421 is inserted on the second support column 41, after the distance between the first support component 1 and the second support component 2 is adjusted by the driving component 5 and the side wall of the foundation pit is supported, the first plug rod 34 is inserted on the first support column 31 and inserted into the first plug hole 321 at a suitable position, the second plug rod 44 is inserted on the second support column 41 and inserted into the second plug hole 421 at a suitable position, the positions of the first slide column 32 and the second slide column 42 are fixed, and the stability of the first adjustment component 3 and the second adjustment component 4 is improved.

[0032] The upper ends of the first plug rod 34, the second plug rod 44 and the third plug rod 65 are all provided with an annular flange (not shown in the figure), the diameter of the flange is larger than the diameter of each insertion hole, so as to prevent the first plug rod 34, the second plug rod 44 and the third plug rod 65 from completely passing through the insertion hole.

[0033] like Figure 5 , Figure 6 , Figure 7 As shown, a support device for underground excavation of rock and soil also includes a moving component 7, which is arranged on the side of the first supporting main board 11 and the second supporting main board 21 away from the side wall of the foundation pit, and the moving component 7 includes a mounting frame 71 fixedly connected to the first supporting main board 11 or the second supporting main board 21, and a rotating rod 72 is rotatably connected in the mounting frame 71, and a fixed block 73 is fixedly connected to the rotating rod 72, and a universal wheel 74 is arranged on the fixed block 73. When the universal wheel 74 contacts the ground and can roll, a fourth plug hole 75 is opened on the upper end surface of the fixed block 73 at this moment, and a fourth wheel matching the fourth plug hole 75 is inserted on the mounting frame 71. The insertion rod 76, through the cooperation of the fourth insertion rod 76, the fixing block 73 and the mounting frame 71, can prevent the fixing block 73 from rotating, thereby allowing the universal wheel 74 to roll stably. The movable assembly 7 is provided to facilitate the movement of the device. After moving to the supporting location, the fourth insertion rod 76 is pulled out to rotate the universal wheel 74 to the side of the first supporting main board 11 or the second supporting main board 21 away from the side wall of the foundation pit, so that the movable assembly 7 does not affect the use of the supporting device. The movable assembly 7 also includes a stop block 77 fixedly connected to the inner wall of the mounting frame 71. When the fourth insertion rod 76 is inserted into the fourth insertion hole 75, the side wall of the fixing block 73 just contacts the stop block 77.

[0034] like Figure 2As shown, the first supporting main board 11 and the second supporting main board 21 are both fixedly connected with a lifting ring 8, so as to facilitate the use of a crane and a lifting rope in conjunction with the lifting ring 8 to lift the supporting device.

[0035] The working principle of a support device for underground excavation in rock and soil in the present embodiment is: when in use, first, the moving component 7 is set to facilitate moving the device to the supporting location, and then the universal wheel 74 in the moving component 7 is folded, and the two first extension plates 12 are moved in the direction away from each other, and the two second extension plates 22 are moved in the direction away from each other, so that the support area of ​​the first support component 1 and the second support component 2 can be adjusted along the length direction of the foundation pit, and the spacing between the first support component 1 and the second support component 2 is adjusted by the output of the servo motor 51, and the third insertion rod 65 is passed through the third pillar 61 and inserted into the third insertion hole 621 at a suitable position, so that the relative positions of the third pillar 61 and the third sliding column 62 can be fixed, so that the total length of the two remains unchanged, and the third adjustment component 6 is between the first extension plate 12 and the second extension plate 22, and the first extension plate 12 and the second extension plate 22 support the two side walls of the foundation pit.

[0036] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A support device for underground excavation in rock soil, characterized in that: The invention comprises a first support component (1) and a second support component (2) for supporting a side wall of a foundation pit, wherein a first adjustment component (3) and a second adjustment component (4) are connected between the first support component (1) and the second support component (2), and a driving component (5) is arranged between the first adjustment component (3) and the second adjustment component (4); the first support component (1) comprises a first support main board (11), and both ends of the first support main board (11) are slidably connected to a first extension plate (12); the second support component (2) comprises a second support main board (21), and both ends of the second support main board (21) are slidably connected to a second extension plate (22); a third adjustment component (6) for supporting is arranged between the first extension plate (12) and the second extension plate (22); and a moving component (7) for facilitating movement of the device is arranged on the first support main board (11) and the second support main board (21).

2. A support device for underground rock excavation according to claim 1, characterized in that: The first adjustment component (3) comprises two first pillars (31) fixedly connected to the first supporting main board (11), a first sliding column (32) being slidably connected inside the first pillars (31), the first sliding column (32) being fixedly connected to the second supporting main board (21), a first long hole (311) communicating with the interior of the two first pillars (31) being provided on one side where the two first pillars (31) are close to each other, and a first movable plate (33) having two ends fixedly connected to the first pillars (31).

3. A support device for underground rock excavation according to claim 2, characterized in that: The first movable plate (33) slides in the first elongated hole (311).

4. A support device for underground rock excavation according to claim 2, characterized in that: The second adjustment component (4) comprises two second pillars (41) fixedly connected to the first supporting main board (11), a second sliding column (42) being slidably connected inside the second pillars (41), the second sliding column (42) being fixedly connected to the second supporting main board (21), a second long hole (411) communicating with the interior of the two second pillars (41) being provided on one side where the two second pillars (41) are close to each other, and a second movable plate (43) having two ends fixedly connected to the second pillars (41).

5. A support device for underground rock excavation according to claim 4, characterized in that: The second movable plate (43) slides in the second elongated hole (411).

6. A support device for underground rock excavation according to claim 5, characterized in that: The driving assembly (5) comprises a servo motor (51) fixedly mounted on the first supporting main board (11); a first threaded rod (52) threadedly connected to the first movable plate (33) is fixedly connected to the output end of the servo motor (51); and a second threaded rod (53) having one end rotatably connected to the first supporting main board (11) and the other end passing through and threadedly connected to the second movable plate (43); a first pulley (54) is fixedly connected to the first threaded rod (52); a second pulley (55) is fixedly connected to the second threaded rod (53); and the first pulley (54) and the second pulley (55) are connected in transmission via a transmission belt (56).

7. A support device for underground rock excavation according to claim 1, characterized in that: The third adjustment assembly (6) comprises a third pillar (61) rotatably connected to the second extension plate (22); the free end of the third pillar (61) is slidably connected to a third sliding column (62); one end of the third sliding column (62) located outside the third pillar (61) is fixedly connected to a tooth plate (63); the first extension plate (12) is provided with a tooth groove (64) adapted to the tooth plate (63); a plurality of third plug holes (621) are evenly spaced on the third sliding column (62); and a third plug rod (65) adapted to the third plug hole (621) is inserted on the third pillar (61).

8. The supporting device for underground rock excavation according to claim 1, characterized in that: The moving assembly (7) comprises a mounting frame (71) fixedly connected to the first supporting main board (11) or the second supporting main board (21); a rotating rod (72) is rotatably connected inside the mounting frame (71); a fixing block (73) is fixedly connected to the fixing rod (72); a universal wheel (74) is arranged on the fixing block (73); a fourth plug hole (75) is provided on the fixing block (73); and a fourth plug rod (76) matched with the fourth plug hole (75) is inserted into the mounting frame (71).

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