Subway construction supporting device

Abstract

The utility model relates to the technical field of civil engineering construction, and discloses a subway construction supporting device which comprises a movable bottom plate, the upper end of the movable bottom plate is connected with a supporting frame and a rotating motor, connecting plates are hinged to the two sides of the upper end of the supporting frame, and the other ends of the connecting plates are hinged to the middle of a supporting plate. One end of the rotating rod is rotationally connected with the supporting frame, and the other end of the rotating rod is in transmission connection with an output shaft of the rotating motor; the connecting ring is in threaded connection with the rotating rod and is in sliding connection with the supporting frame; the two telescopic assemblies are oppositely arranged on the side wall of the connecting ring, and the other ends of the telescopic assemblies are hinged to the lower end of the supporting plate; the extension plate is detachably connected with the supporting plate in a sliding mode in the vertical direction, and the extension plate is detachably connected with the side wall of the foundation pit through a fixing piece. The supporting device can provide full-range supporting for the side wall of the foundation pit.

Description

Technical Field

[0001] This utility model relates to the field of civil engineering construction technology, and in particular to a subway construction support device. Background Technology

[0002] Subway is a form of railway transportation, referring to an urban rail transit system that mainly operates underground. During the construction of subway projects, it is necessary to support and protect the tunnels while construction is underway to prevent tunnel collapses and ground subsidence, and to reduce the impact on existing buildings.

[0003] Patent CN221345618U discloses a subway construction support device. In use, workers place the device in the middle of the pit and rotate the rotating rod, causing it to rotate the adjusting rod. This causes the connecting ring to move upwards under the action of the limiting rod, which in turn moves the connecting sleeve and the telescopic rod inserted in the connecting sleeve upwards, spreading the first connecting mechanism to both sides until the sidewall support plate is tightly fitted to the pit sidewall. Then, the mounting base plate is fixed to the ground using anchors. If the width between the pit sidewalls is long, the first fixing bolt can be unscrewed, allowing the second connecting plate to stretch along the first sliding groove to a suitable length before the first fixing bolt is screwed into the adjacent first fixing hole for fixation. However, this device has the following drawbacks: the sidewall support plate mainly acts on the upper and middle part of the pit sidewall, and the part of the pit sidewall below the sidewall support plate cannot be effectively supported. This drawback is particularly critical in the support operation, because the lower part of the pit sidewall often bears greater soil pressure and potential slippage risk. If this area is not adequately supported, it may not only affect the stability of the entire pit, but may also cause safety accidents.

[0004] Therefore, how to achieve full-range support for the sidewalls of the foundation pit has become a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0005] The present invention aims to provide a subway construction support device to overcome the shortcomings mentioned above.

[0006] To achieve the above objectives, the technical solution of this utility model is: a subway construction support device, comprising:

[0007] A movable base plate has a support frame and a rotating motor connected to its upper end. Both sides of the upper end of the support frame are hinged to connecting plates, and the other end of the connecting plate is hinged to the middle of the support plate.

[0008] The rotating rod has one end rotatably connected to the support frame and the other end drively connected to the output shaft of the rotating motor;

[0009] A connecting ring is threadedly connected to the rotating rod and slidably connected to the support frame;

[0010] The telescopic assembly includes two sets of telescopic components arranged opposite each other on the sidewall of the connecting ring, with their other ends hinged to the lower end of the support plate; and

[0011] The extension plate is detachably and slidably connected to the support plate in the vertical direction, and is detachably connected to the pit sidewall by fasteners.

[0012] Furthermore, the support plate is provided with a first sliding groove, the first sliding groove and the extension plate are slidably connected, the end of the support plate away from the side wall of the pit is provided with at least one first fixing hole, the extension plate is provided with a second fixing hole corresponding to the first fixing hole, and the fastener is detachably connected to the first fixing hole and the second fixing hole.

[0013] Furthermore, the upper end of the extension plate is provided with two sets of limiting protrusions facing each other, and the upper end of the first slide groove is provided with two sets of second slide grooves facing each other, and the limiting protrusions and the second slide grooves are slidably connected.

[0014] Furthermore, two sets of limiting rods are arranged opposite each other on the side wall of the connecting ring, and limiting grooves are provided on the opposite side walls of the support frame. The limiting rods and limiting grooves are slidably connected, and the limiting rods and telescopic components are misaligned.

[0015] Furthermore, the telescopic assembly includes a connecting sleeve, a telescopic rod, and a limiting pin. One end of the connecting sleeve is fixedly connected to the side wall of the connecting ring, and the limiting rod and the connecting sleeve are offset. The other end of the connecting sleeve is slidably sleeved on the periphery of one end of the telescopic rod. The other end of the telescopic rod is hinged to the lower end of the support plate. The side wall of the connecting sleeve is provided with a first through hole, and the side wall of the telescopic rod is provided with a plurality of second through holes. The limiting pin passes through the first through hole and the second through hole and is detachably connected.

[0016] Furthermore, a placement box is fixedly provided at the upper end of the support frame. The placement box has an opening at the upper end and a lifting assembly is arranged inside the placement box. The upper end of the lifting assembly is fixedly connected to the arc-shaped top plate, and the upper end of the placement box and the lower end of the arc-shaped top plate selectively abut against each other.

[0017] Furthermore, the lifting assembly includes a bearing seat, a rotating rod, a transmission motor, a slider, a push-pull rod, and a push-pull plate. Both ends of the rotating rod are rotatably connected to the bearing seat. Two threaded sections with opposite directions are provided on both sides of the rotating rod. The bearing seat and the lower end of the placement box are detachably connected. The transmission motor and the lower end of the placement box are detachably connected. The output shaft of the transmission motor is drivenly connected to one end of the rotating rod. The two opposite threaded sections are threadedly connected to the slider. Both ends of the push-pull rod are hinged to the slider and the push-pull plate, respectively. The two sets of push-pull rods are of equal length and arranged in a figure-eight shape. The upper end of the push-pull plate is fixedly connected to the arc-shaped top plate.

[0018] Furthermore, a baffle is fixedly provided at the lower end of the arc-shaped top plate, and the baffle is slidably connected to the inner wall of the placement box. Both the placement box and the baffle are provided with at least one ventilation hole.

[0019] Furthermore, a pressure sensor is fixedly mounted on the upper end of the arc-shaped top plate.

[0020] Furthermore, at least one wheel is provided at the lower end of the base plate.

[0021] Compared with the prior art, this utility model has at least the following advantages: When in use, the worker places the device at the construction position, starts the rotating motor, and drives the rotating rod to rotate. The rotating rod is threadedly connected to the connecting ring. Therefore, when the rotating rod rotates, the connecting ring slides up and down along the support frame. The two ends of the connecting plate are respectively hinged to the support frame and the middle of the support plate. The telescopic component is connected between the connecting ring and the lower end of the support plate. As the connecting ring moves up and down, the length of the telescopic component changes, thereby pushing the support plate to rotate around its hinge point with the connecting plate, realizing the support plate's support for the upper sidewall of the pit. In addition, the support plate is also provided with a detachable sliding extension plate. The extension plate is slid out from the support plate and tightly connected to the lower sidewall of the pit by a fixing component, thereby completing the support for the lower sidewall of the pit. Through the coordinated support of the support plate and the extension plate, full-range support is provided for the pit sidewall. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the overall structure of the subway construction support device of this utility model;

[0024] Figure 2 This is an exploded view of a portion of the structure of the subway construction support device of this utility model;

[0025] Figure 3 This is a cross-sectional view of the support plate and extension plate of this utility model;

[0026] Figure 4 This is a cross-sectional view of the internal structure of the arc-shaped top plate and the placement box of this utility model.

[0027] Reference numerals: 1. Base plate; 2. Support frame; 3. Rotating rod; 4. Rotating motor; 5. Connecting ring; 6. Support plate; 7. Extension plate; 8. Fixing component; 9. Connecting plate; 10. First slide groove; 11. Limiting protrusion; 12. Second slide groove; 13. Fastener; 14. Limiting groove; 15. Limiting rod; 16. Connecting sleeve; 17. Telescopic rod; 18. Limiting pin; 19. Placement box; 20. Arc-shaped top plate; 21. Bearing seat; 22. Rotating rod; 23. Drive motor; 24. Slider; 25. Push-pull rod; 26. Push-pull plate; 27. Baffle; 28. Vent hole; 29. ​​Pressure sensor; 30. Wheel. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] Reference Figure 1-2 This utility model provides a subway construction support device, comprising: a movable base plate 1, with a support frame 2 and a rotating motor 4 connected to its upper end; connecting plates 9 are hinged to both sides of the upper end of the support frame 2, and the other end of the connecting plates 9 is hinged to the middle of the support plate 6; a rotating rod 3, one end of which is rotatably connected to the support frame 2, and the other end of which is drively connected to the output shaft of the rotating motor 4; the longitudinal section of the support frame 2 is U-shaped, which facilitates the placement of the rotating rod 3; and a connecting ring 5, which is threadedly connected to the rotating rod 3. It is slidably connected to the support frame 2, and the rotating motor 4 is started in both directions, which in turn drives the rotating rod 3 to rotate in both directions, so that the connecting ring 5 moves up and down along the rotating rod 3; the telescopic component, two sets of telescopic components are arranged opposite each other on the side wall of the connecting ring 5, and the other end of the component is hinged to the lower end of the support plate 6. The telescopic component moves up and down along the rotating rod 3 with the connecting ring 5; and the extension plate 7, which is detachably slidably connected to the support plate 6 in the vertical direction. It is detachably connected to the side wall of the pit through the fixing member 8, which is an anchor rod.

[0031] Reference Figure 3The support plate 6 is provided with a first sliding groove 10, which is slidably connected to the extension plate 7. The end of the support plate 6 away from the side wall of the pit is provided with three first fixing holes. The number of first fixing holes is not specifically limited and can be flexibly set according to the actual length of the support plate 6. The extension plate 7 is provided with a second fixing hole corresponding to the first fixing hole. The fastener 13 is detachably connected to the first fixing hole and the second fixing hole. The fastener 13 is a bolt and the fastener 13 is threaded to the second fixing hole.

[0032] When in use, the staff releases the fastener 13 from the lock of the extension plate 7, then slides the extension plate 7 down along the first slide groove 10 until it reaches the ground of the pit, and then uses the fastener 8 to fix the extension plate 7 to the side wall of the pit.

[0033] The upper end of the extension plate 7 is provided with two sets of limiting protrusions 11, and the upper end of the first slide groove 10 is provided with two sets of second slide grooves 12. The limiting protrusions 11 and the second slide grooves 12 are slidably connected. The setting of the limiting protrusions 11 and the second slide grooves 12 can prevent the extension plate 7 from sliding out of the first slide groove 10.

[0034] Reference Figure 1-2 Two sets of limiting rods 15 are arranged opposite each other on the side wall of the connecting ring 5, and limiting grooves 14 are provided on the opposite side walls of the support frame 2. The limiting rods 15 and the limiting grooves 14 are slidably connected, and the limiting rods 15 and the telescopic components are misaligned.

[0035] The telescopic assembly includes a connecting sleeve 16, a telescopic rod 17, and a limiting pin 18. One end of the connecting sleeve 16 is fixedly connected to the side wall of the connecting ring 5, and the limiting rod 15 and the connecting sleeve 16 are offset. The other end of the connecting sleeve 16 is slidably sleeved on the periphery of one end of the telescopic rod 17. The other end of the telescopic rod 17 is hinged to the lower end of the support plate 6. The side wall of the connecting sleeve 16 is provided with a first through hole, and the side wall of the telescopic rod 17 is provided with several second through holes. The limiting pin 18 passes through the first through hole and the second through hole and is detachably connected.

[0036] When in use, the staff removes the limiting pin 18. After the support plate 6 contacts the pit sidewall, the limiting pin 18 is then inserted into the first through hole and the second through hole for connection. The limiting pin 18 is used to fix the position of the telescopic rod 17 to ensure the stability of the support structure. By adjusting the extension length of the telescopic rod 17, the fit between the support plate 6 and the pit sidewall can be further adjusted.

[0037] Reference Figure 4 The support frame 2 is fixedly provided with a placement box 19 at the upper end. The placement box 19 has an opening at the upper end and a lifting component is arranged inside the placement box 19. The upper end of the lifting component is fixedly connected to the arc-shaped top plate 20. The upper end of the placement box 19 and the lower end of the arc-shaped top plate 20 selectively abut against each other. The arc-shaped top plate 20 provides additional support for the top of the pit.

[0038] The lifting assembly includes a bearing seat 21, a rotating rod 22, a drive motor 23, a slider 24, a push-pull rod 25, and a push-pull plate 26. Both ends of the rotating rod 22 are rotatably connected to the bearing seat 21. Two threaded sections with opposite directions are provided on both sides of the rotating rod 22. The bearing seat 21 and the lower end of the placement box 19 are detachably connected. The drive motor 23 and the lower end of the placement box 19 are detachably connected. The output shaft of the drive motor 23 is connected to the end of one end of the rotating rod 22. The two opposite threaded sections are threadedly connected to the slider 24. Both ends of the push-pull rod 25 are hinged to the slider 24 and the push-pull plate 26, respectively. The two sets of push-pull rods 25 are of equal length and arranged in a figure-eight shape. The upper end of the push-pull plate 26 is fixedly connected to the arc-shaped top plate 20.

[0039] A baffle 27 is fixedly provided at the lower end of the arc-shaped top plate 20. The baffle 27 is slidably connected to the inner wall of the placement box 19. Both the placement box 19 and the baffle 27 are provided with at least one vent hole 28. The design of the vent hole 28 can ensure the heat dissipation requirements of the drive motor 23 when it is working, and ensure the long-term stable operation of the equipment.

[0040] When in use, when the push-pull plate 26 pushes the arc-shaped top plate 20 upward, the upper end of the placement box 19 and the lower end of the arc-shaped top plate 20 separate. At this time, a gap will appear between the placement box 19 and the arc-shaped top plate 20. The baffle 27 can prevent the gap from appearing and protect the internal structure of the placement box 19.

[0041] A pressure sensor 29 is fixedly installed at the upper end of the arc-shaped top plate 20. When adjusting the height of the arc-shaped top plate 20, since the staff cannot directly observe the distance between the arc-shaped top plate 20 and the top of the pit, the design of the pressure sensor 29 makes it easier for the staff to better observe the pressure at the top of the pit.

[0042] Reference Figure 1 To facilitate the movement of the device, four wheels 30 are provided at the lower end of the base plate 1. The wheels 30 are universal wheels with locking function. These wheels 30 not only facilitate the overall movement of the device, but also prevent the device from sliding during operation.

[0043] The working principle of this utility model is as follows: When in use, move the device to the designated construction position and lock the wheels 30 to ensure the stability of the device. Then remove the limit pin 18. At this time, start the rotating motor 4. The rotating motor 4 drives the rotating rod 3 to rotate. Since the rotating rod 3 is threadedly connected to the connecting ring 5 and the connecting ring 5 is slidably connected to the support frame 2, the connecting ring 5 will move up and down along the rotating rod 3. After the support plate 6 contacts the side wall of the pit, the limit pin 18 is then inserted into the first through hole and the second through hole for connection.

[0044] Then, the drive motor 23 is started, which drives the rotating rod 22 to rotate. The two threaded sections on the rotating rod 22 with opposite directions drive the two sliders 24 to move. The sliders 24 then push the arc-shaped top plate 20 to rise or fall through the push-pull rod 25.

[0045] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0046] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A subway construction support device, characterized in that, include: A movable base plate (1) is connected to a support frame (2) and a rotating motor (4) at its upper end. Both sides of the upper end of the support frame (2) are hinged with connecting plates (9), and the other end of the connecting plate (9) is hinged to the middle of the support plate (6). The rotating rod (3) is rotatably connected at one end to the support frame (2) and its other end is connected to the output shaft of the rotating motor (4) for transmission. The connecting ring (5) is threadedly connected to the rotating rod (3) and slidably connected to the support frame (2); The telescopic assembly comprises two sets of telescopic components arranged opposite each other on the sidewall of the connecting ring (5), the other end of which is hinged to the lower end of the support plate (6); and The extension plate (7) and the support plate (6) are detachably slidably connected in the vertical direction, and are detachably connected to the pit sidewall by fasteners (8).

2. The subway construction support device according to claim 1, characterized in that, The support plate (6) is provided with a first sliding groove (10), the first sliding groove (10) and the extension plate (7) are slidably connected, the support plate (6) is provided with at least one first fixing hole at one end away from the side wall of the pit, the extension plate (7) is provided with a second fixing hole corresponding to the first fixing hole, and the fastener (13) is detachably connected to the first fixing hole and the second fixing hole.

3. The subway construction support device according to claim 2, characterized in that, The upper end of the extension plate (7) is provided with two sets of limiting protrusions (11) and the upper end of the first slide groove (10) is provided with two sets of second slide grooves (12) and the limiting protrusions (11) and the second slide grooves (12) are slidably connected.

4. The subway construction support device according to claim 2, characterized in that, The sidewall of the connecting ring (5) is provided with two sets of limiting rods (15) facing each other, and the sidewalls of the support frame (2) are provided with limiting grooves (14). The limiting rods (15) and the limiting grooves (14) are slidably connected, and the limiting rods (15) and the telescopic components are misaligned.

5. The subway construction support device according to claim 4, characterized in that, The telescopic assembly includes a connecting sleeve (16), a telescopic rod (17), and a limiting pin (18). One end of the connecting sleeve (16) is fixedly connected to the side wall of the connecting ring (5), and the limiting rod (15) and the connecting sleeve (16) are offset. The other end of the connecting sleeve (16) is slidably sleeved on the periphery of one end of the telescopic rod (17). The other end of the telescopic rod (17) is hinged to the lower end of the support plate (6). The side wall of the connecting sleeve (16) is provided with a first through hole, and the side wall of the telescopic rod (17) is provided with several second through holes. The limiting pin (18) is detachably connected through the first through hole and the second through hole.

6. The subway construction support device according to any one of claims 1 to 5, characterized in that, The support frame (2) is fixedly provided with a placement box (19) at the upper end. The placement box (19) is open at the upper end and a lifting component is arranged inside the placement box (19). The upper end of the lifting component is fixedly connected to the arc-shaped top plate (20). The upper end of the placement box (19) and the lower end of the arc-shaped top plate (20) selectively abut against each other.

7. The subway construction support device according to claim 6, characterized in that, The lifting assembly includes a bearing seat (21), a rotating rod (22), a transmission motor (23), a slider (24), a push-pull rod (25), and a push-pull plate (26). Both ends of the rotating rod (22) are rotatably connected to the bearing seat (21). Two threaded sections with opposite directions are provided on both sides of the rotating rod (22). The lower end of the bearing seat (21) and the placement box (19) are detachably connected. The lower end of the transmission motor (23) and the placement box (19) are detachably connected. The output shaft of the transmission motor (23) is connected to the end of one end of the rotating rod (22). Both opposite threaded sections are threadedly connected to the slider (24). Both ends of the push-pull rod (25) are hinged to the slider (24) and the push-pull plate (26), respectively. The two sets of push-pull rods (25) are of equal length and arranged in a figure-eight shape. The upper end of the push-pull plate (26) is fixedly connected to the arc-shaped top plate (20).

8. The subway construction support device according to claim 7, characterized in that, A baffle (27) is fixedly provided at the lower end of the arc-shaped top plate (20). The baffle (27) is slidably connected to the inner wall of the placement box (19). Both the placement box (19) and the baffle (27) are provided with at least one vent hole (28).

9. The subway construction support device according to claim 6, characterized in that, A pressure sensor (29) is fixedly mounted on the upper end of the arc-shaped top plate (20).

10. The subway construction support device according to any one of claims 1 to 5, characterized in that, At least one wheel (30) is provided at the lower end of the base plate (1).

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