Urban rail transit foundation pit supporting device

Abstract

The utility model discloses an urban rail transit foundation pit supporting device, which particularly relates to the technical field of building support and comprises a base, a vertical frame is fixedly connected onto the base, a limit transmission rod is rotatably connected on the inner side of the vertical frame, a motor for driving the limit transmission rod to rotate is arranged at the top of the vertical frame, and a pair of positioning sleeves are arranged on the inner side of the vertical frame. The positioning sleeves are fixedly connected to the vertical frame through first screws, a pair of telescopic assemblies is arranged on each positioning sleeve in the radial direction, an abutting plate is arranged at one end of each telescopic assembly, a foundation pit wall main supporting plate is arranged on each abutting plate, and a foundation pit wall auxiliary supporting plate is rotationally connected to each foundation pit wall main supporting plate through a hinge. A transmission assembly used for driving the telescopic assembly to stretch out and draw back is arranged in the positioning sleeve and is in transmission connection with the limiting transmission rod. The foundation pit supporting device solves the problem that foundation pit supporting is limited due to the fact that the supporting area of a foundation pit supporting device in the prior art is not easy to expand.

Description

Technical Field

[0001] The utility model relates to the technical field of building support, in particular to a foundation pit support device for urban rail transit. Background Art

[0002] The foundation pit is a soil pit excavated at the foundation design location according to the base elevation and foundation plane dimensions. Urban rail transit projects are generally constructed in urban areas. Due to the influence of existing buildings in the city, urban rail transit projects are subject to certain restrictions during construction, especially when excavating strip foundation pits or working pits. Due to geographical restrictions, the non-slope foundation pit excavation method is adopted. This method has unstable slopes and requires foundation pit support.

[0003] Patent No. CN 220132919U discloses a subway vehicle depot foundation pit support device, including a base plate, a positioning plate fixedly connected to the top of the base plate, pin holes are provided on the front and back of the positioning plate, a movable frame is slidably connected to the outer surface of the positioning plate, and the bottom of the front and back of the movable frame are threadedly connected with limiting bolts, one end of the limiting bolt passes through the movable frame and extends to the inner cavity of the pin hole. The utility model can adjust the support height of the support plate by arranging the base plate, the positioning plate, the pin hole, the movable frame and the limiting bolt, and can adjust the support spacing of the support plate by arranging the box body, the dual-axis motor, the screw rod, the rectangular plate and the mounting plate. By arranging the above structure, the foundation pit support device has the advantage of having a spacing adjustment function when in use, which solves the problem that the original foundation pit support device does not have a spacing adjustment function when in use, thereby meeting the needs of users.

[0004] In the above-mentioned patent, the inventor believes that although the patent satisfies the adjustability of the foundation pit support spacing when in use, the patent has limitations on the support area of ​​the foundation pit. Since the support area is not easy to expand, the practicality of the foundation pit support is reduced. Utility Model Content

[0005] To this end, the utility model provides an urban rail transit foundation pit support device to solve the problem in the prior art that the support area of ​​the foundation pit support device is difficult to expand, resulting in limited foundation pit support.

[0006] In order to achieve the above purpose, the embodiment of the utility model provides the following technical solutions:

[0007] A support device for a foundation pit of urban rail transit, comprising a base, a vertical frame fixedly connected to the base, the inner side of the vertical frame being rotatably connected to a limited transmission rod, a motor for driving the limited transmission rod to rotate is arranged on the top of the vertical frame, a pair of positioning sleeves are arranged on the inner side of the vertical frame, the positioning sleeves are fastened to the vertical frame by screws, a pair of telescopic components are radially arranged on each positioning sleeve, a pressure plate is arranged at one end of the telescopic component, a main support plate of the foundation pit wall is arranged on the pressure plate, a secondary support plate of the foundation pit wall is rotatably connected to the main support plate of the foundation pit wall by a hinge, a transmission component for driving the telescopic component to extend and retract is arranged in the positioning sleeve, and the transmission component is transmission-connected to the limited transmission rod.

[0008] Furthermore, the vertical frame is provided with a plurality of fastening holes for threaded connection with matching screws.

[0009] Furthermore, the telescopic assembly includes a fixed sleeve fixedly connected to the side of the positioning sleeve, an extension arm slidably connected in the fixed sleeve and a precision screw connected to the extension arm by threaded transmission, and the optical rod of the precision screw is rotatably connected to the positioning sleeve.

[0010] Furthermore, the pressure plate is fixedly connected to an end of the extension arm facing away from the positioning sleeve.

[0011] Furthermore, a pressure plate located on the same side is fastened to the main support plate of the foundation pit wall by screw two.

[0012] Furthermore, a second fastening hole is provided on the auxiliary support plate of the foundation pit wall, and another pressure plate located on the same side is threadedly fastened to the second fastening hole by means of a third screw.

[0013] Furthermore, the transmission assembly includes a bevel gear 1 arranged in the positioning sleeve, a rotating ring fixedly connected to the top of the bevel gear 1, and a pair of bevel gears 2 meshingly connected to the bevel gear 1. The bevel gear 1 is rotatably connected to the positioning sleeve through the rotating ring, and the limiting transmission rod passes through the positioning sleeve and the rotating ring in sequence, and is movably inserted into the bevel gear 1.

[0014] The utility model has the following advantages:

[0015] 1. The utility model discloses a support device for a foundation pit of urban rail transit. By setting a main support plate of a foundation pit wall and a secondary support plate of a foundation pit wall rotatably connected by hinges, the secondary support plate of the foundation pit wall can be folded and unfolded on the main support plate of the foundation pit wall to effectively expand the support depth and support area of ​​the foundation pit, and provide the applicability of foundation pit excavation. Moreover, due to the folding arrangement of the main support plate of the foundation pit wall and the secondary support plate of the foundation pit wall, it is easy to carry and can be used in stacking and unfolding, which is convenient for the construction of the foundation pit to meet the support.

[0016] 2. The utility model provides a support device for a foundation pit of urban rail transit. A pair of positioning sleeves are provided on the positioning sleeves, and a pair of telescopic components are driven to rotate by a limiting transmission rod. The rotation of the precision screw can control the linear telescopic extension and retraction of the extension arm outward or inward in the fixed sleeve. The pressure plate is used to provide position support for the main support plate of the foundation pit arm or the auxiliary support plate of the foundation pit wall. This can be used to support foundation pits of different widths.

[0017] It is worth explaining that when the main support plates and the auxiliary support plates of the foundation pit wall do not expand the supporting area but are superimposed on the foundation pit wall, a pair of pressure plates on the same side can be simultaneously secured to the main support plates of the foundation pit wall. When the main support plates and the auxiliary support plates of the foundation pit wall are deployed and used, the positioning sleeves can be vertically adjusted on the vertical frames. In this way, a pair of pressure plates can be respectively secured to the main support plates and the auxiliary support plates of the foundation pit wall to achieve a supporting balance effect, thereby stabilizing the support of the foundation pit. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the implementation or the prior art description. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0019] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantial technical significance. Any structural modification, change in proportion or adjustment of size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0021] Figure 2 It is a structural schematic diagram of the vertical frame and the limit transmission rod of the utility model.

[0022] Figure 3 It is a cross-sectional view of the positioning sleeve and the telescopic assembly of the utility model.

[0023] Figure 4 For this utility model Figure 3 Enlarged view of part A in the middle.

[0024] Figure 5 It is a structural schematic diagram of the main support plate of the foundation pit wall and the auxiliary support plate of the foundation pit wall of the utility model.

[0025] The accompanying drawings are marked as follows: 1. base; 2. vertical frame; 3. limit transmission rod; 4. motor; 5. positioning sleeve; 6. telescopic assembly; 61. fixed sleeve; 62. extension arm; 63. precision screw; 7. pressure plate; 8. main support plate of foundation pit wall; 81. secondary support plate of foundation pit wall; 9. transmission assembly; 91. bevel gear one; 92. rotating ring; 93. bevel gear two; 10. fastening hole one; 11. fastening hole two. DETAILED DESCRIPTION

[0026] The following is a specific embodiment of the present invention. People familiar with the technology can easily understand the other advantages and functions of the present invention from the contents disclosed in this specification. Obviously, the described embodiment is a part of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] Combined with reference Figure 1-Figure 5 The utility model provides a support device for a foundation pit of urban rail transit, including a base 1, which is cross-shaped, so that it is arranged at the inner bottom of the foundation pit to provide a stable bottom support for the present invention, a vertical frame 2 is fixedly connected to the base 1, the inner side of the vertical frame 2 is rotatably connected to a limited transmission rod 3, a motor 4 for driving the limited transmission rod 3 to rotate is arranged on the top of the vertical frame 2, a pair of positioning sleeves 5 are arranged on the inner side of the vertical frame 2, the positioning sleeves 5 are fastened to the vertical frame 2 by screws, and the positioning sleeves 5 can be fixed at different positions on the vertical path of the vertical frame 2 by screws. A pair of telescopic components 6 are radially arranged on each positioning sleeve 5. The adjustable position of the positioning sleeve 5 can meet the adjustability of the supporting position of the telescopic component 6. A pressure plate 7 is arranged at one end of the telescopic component 6, and a main support plate 8 of the foundation pit wall is arranged on the pressure plate 7. The main support plate 8 of the foundation pit wall is connected to the secondary support plate 81 of the foundation pit wall through a hinge. The angle range of the main support plate 8 of the foundation pit wall and the secondary support plate 81 of the foundation pit wall through the hinge is 0-180 degrees. A transmission component 9 for driving the telescopic component 6 to extend and retract is arranged in the positioning sleeve 5, and the transmission component 9 is transmission-connected to the limit transmission rod 3.

[0028] The vertical frame 2 is provided with a plurality of fastening holes 10 for screw-threaded connection. The arrangement of the plurality of fastening holes 10 can cooperate with the screws to fix the positioning sleeve 5 at a suitable position on the vertical frame 2.

[0029] Specifically, when the main support plate 8 of the foundation pit wall and the auxiliary support plate 81 of the foundation pit wall are folded, that is, the auxiliary support plate 81 of the foundation pit wall faces the inner wall of the foundation pit, and the main support plate 8 of the foundation pit wall is set on one side of the auxiliary support plate 81 of the foundation pit wall, at this time, the setting positions of a pair of positioning sleeves 5 are relatively close, so that the corresponding telescopic assembly 6 can be extended and retracted to drive the corresponding pressure plate 7 to be fully supported on the main support plate 8 of the foundation pit wall.

[0030] Similarly, when the main support plate 8 of the foundation pit wall and the secondary support plate 81 of the foundation pit wall are unfolded to the same horizontal plane, the pair of positioning sleeves 5 arranged on the vertical frame 2 are in a distant state, so that the pair of pressure plates 7 on the same side can act on the main support plate 8 of the foundation pit wall and the secondary support plate 81 of the foundation pit wall respectively.

[0031] The telescopic assembly 6 includes a fixed sleeve 61 fixedly connected to the side of the positioning sleeve 5, an extension arm 62 slidably connected in the fixed sleeve 61, and a precision screw 63 threadedly connected to the extension arm 62. The smooth rod of the precision screw 63 is rotatably connected to the positioning sleeve 5. The forward and reverse rotation of the precision screw 63 can drive the extension arm 62 to move linearly in the fixed sleeve 61.

[0032] The pressing plate 7 is fixedly connected to one end of the extension arm 62 facing away from the positioning sleeve 5 .

[0033] A pressure plate 7 located on the same side is fastened to the main support plate 8 of the foundation pit wall by screw two. In this application, a pressure plate 7 located at the bottom must be connected to the main support plate 8 of the foundation pit wall by screw two. When a pair of pressure plates 7 on the same side act on the main support plate 8 of the foundation pit wall, the other pressure plate 7 can be connected by screws or can be directly in contact without screws.

[0034] A fastening hole 2 11 is provided on the secondary support plate 81 of the foundation pit wall, and another pressure plate 7 on the same side is threadedly fastened to the fastening hole 2 11 by means of screw 3. When the secondary support plate 81 of the foundation pit wall is unfolded and set on the main support plate 8 of the foundation pit wall, at this time, a pair of pressure plates 7 act on the secondary support plate 81 of the foundation pit wall and the main support plate 8 of the foundation pit wall respectively, and the pressure plate 7 on the secondary support plate 81 of the foundation pit wall needs to be fixed by means of screw 3.

[0035] The transmission assembly 9 includes a bevel gear 91 arranged in the positioning sleeve 5, a rotating ring 92 fixedly connected to the top of the bevel gear 91 and a pair of bevel gears 93 meshingly connected to the bevel gear 91. The bevel gear 91 is rotatably connected to the positioning sleeve 5 through the rotating ring 92. The limit transmission rod 3 passes through the positioning sleeve 5 and the rotating ring 92 in sequence and is movably inserted into the bevel gear 91. In the present application, a limit strip is integrally arranged on the limit transmission rod 3, so that the limit transmission rod 3 can drive the bevel gear 91 to rotate while the bevel gear 91 can move vertically on the limit transmission rod 3.

[0036] Specifically, the motor 4 is used to control the rotation of the limit transmission rod 3, so that the bevel gear 1 91 can drive a pair of bevel gear 2 93 to rotate, and the bevel gear 2 93 controls the rotation of the precision screw 63 to make the pair of laterally arranged extension arms 62 approach or move away from each other, so that the pressure plate 7 at one end of the extension arm 62 can drive the main support plate 8 of the foundation pit wall to adapt to the width of the foundation pit for contact support; when it is necessary to unfold the secondary support plate 81 of the foundation pit wall to expand the support area of ​​the foundation pit, at this time, one of the positioning sleeves 5 can be moved and fixed to the high position of the vertical frame 2 by screw 1, so that the pressure plate 7 at the top can be fastened to the secondary support plate 81 of the foundation pit wall by screw 3, so that by controlling the rotation of the limit transmission rod 3, the main support plate 8 of the foundation pit wall and the secondary support plate 81 of the foundation pit wall can be synchronously approached to the inner wall of the foundation pit for support operations.

[0037] Although the utility model has been described in detail above with general descriptions and specific embodiments, it is obvious to those skilled in the art that some modifications or improvements can be made to the utility model. Therefore, these modifications or improvements made without departing from the spirit of the utility model are within the scope of protection claimed by the utility model.

Claims

1. An urban rail transit foundation pit support device, comprising a base (1), characterized in that: The base (1) is fixedly connected with a vertical frame (2), the inner side of the vertical frame (2) is rotatably connected with a limit transmission rod (3), the top of the vertical frame (2) is provided with a motor (4) for driving the limit transmission rod (3) to rotate, the inner side of the vertical frame (2) is provided with a pair of positioning sleeves (5), the positioning sleeves (5) are fastened to the vertical frame (2) by screws, each positioning sleeve (5) is radially provided with a pair of telescopic components (6), one end of the telescopic component (6) is provided with a pressure plate (7), the pressure plate (7) is provided with a foundation pit wall main support plate (8), the foundation pit wall main support plate (8) is rotatably connected with a foundation pit wall secondary support plate (81) by a hinge, and a transmission component (9) for driving the telescopic component (6) to telescope is provided in the positioning sleeve (5), and the transmission component (9) is transmission-connected to the limit transmission rod (3).

2. The urban rail transit foundation pit support device according to claim 1, characterized in that: The vertical frame (2) is provided with a plurality of fastening holes (10) for threaded connection with matching screws.

3. The urban rail transit foundation pit support device according to claim 1, characterized in that: The telescopic assembly (6) comprises a fixed sleeve (61) fixedly connected to the side of the positioning sleeve (5), an extension arm (62) slidably connected to the fixed sleeve (61), and a precision screw (63) threadedly connected to the extension arm (62), wherein the polished rod of the precision screw (63) is rotatably connected to the positioning sleeve (5).

4. The urban rail transit foundation pit support device according to claim 3, characterized in that: The pressing plate (7) is fixedly connected to one end of the extension arm (62) facing away from the positioning sleeve (5).

5. The urban rail transit foundation pit support device according to claim 4, characterized in that: A foundation pit wall main support plate (8) is arranged on the pressure plate (7), and a pressure plate (7) located on the same side is fastened to the foundation pit wall main support plate (8) by screw two.

6. The urban rail transit foundation pit support device according to claim 5, characterized in that: The secondary support plate (81) of the foundation pit wall is provided with a second fastening hole (11), and another pressure plate (7) located on the same side is threadedly fastened to the second fastening hole (11) by means of a third screw.

7. The urban rail transit foundation pit support device according to claim 1, characterized in that: The transmission assembly (9) comprises a bevel gear (91) arranged in the positioning sleeve (5), a rotating ring (92) fixedly connected to the top of the bevel gear (91), and a pair of bevel gears (93) meshingly connected to the bevel gear (91); the bevel gear (91) is rotatably connected to the positioning sleeve (5) through the rotating ring (92); the limit transmission rod (3) passes through the positioning sleeve (5) and the rotating ring (92) in sequence, and is movably plugged into the bevel gear (91).

Images