An angle-adjustable multi-layer combined steel support device

Abstract

The utility model relates to steel support technical field especially angle adjustable multilayer combination steel support device, including steel pipe, the left end of steel pipe is provided with a pair of guide groove, the left side of steel pipe is installed with the movable joint, the left and right sides of steel pipe all are provided with the support seat, the support seat includes main support board, the side of main support board away from steel pipe is provided with a plurality of equiangularly arranged rail grooves, the side close to steel pipe of rail groove all is provided with the limiting slot of being set up in the inboard of main support board, the inboard of limiting slot all is connected with limiting guide block in sliding mode, the outside of limiting guide block all is fixedly connected with the extension support board of sliding connection with rail groove, the side close to steel pipe of extension support board all is fixedly connected with the swivel head, in the utility model, through setting adjusting portion, side support foot rest and support seat etc. Structure makes angle adjustable multilayer combination steel support device can be in the foundation pit through " multilayer, multidirectional, big angle " combination support increases the support range.

Description

Technical Field

[0001] This utility model relates to the field of steel support technology, specifically to a multi-layer combined steel support device with adjustable angle. Background Technology

[0002] A foundation pit is a temporary deep pit excavated below ground level for the construction of underground structures (subway stations, underground parking garages, utility tunnels, etc.). Due to the lateral earth pressure generated by the soil around the pit walls, groundwater, and the loads of nearby buildings, if the pit walls are exposed, collapse, slippage, or excessive deformation are very likely to occur. Therefore, it is necessary to install internal supports or anchor cable systems to balance the lateral pressure and ensure construction safety and the stability of the surrounding environment. Steel supports have become the preferred form of internal support for deep foundation pits in soft soil areas due to their advantages such as quick installation, reusability, and no curing period.

[0003] Existing steel support systems generally adopt the "single-bracing + fixed end plate" model. The effective area at the end is limited by the geometric dimensions of the flexible head and the fixed end plate, resulting in a small effective force transmission area at the end. Consequently, the support range of a single bracing is also small. To compensate for the insufficient coverage, the bracing can only be densified, which results in a multiple increase in the number of supports in the same foundation pit. Material rental costs, hoisting times, node installation, and prestressing application time all increase significantly. Therefore, based on the above problems, a multi-layer combined steel support device with adjustable angle is proposed. Utility Model Content

[0004] The purpose of this utility model is to provide an angle-adjustable multi-layer combined steel support device to solve the problem that existing steel support devices have insufficient end support coverage, resulting in an excessive number of supports and high costs in the foundation pit.

[0005] To achieve the above objectives, this utility model provides the following technical solution: An angle-adjustable multi-layer combined steel support device includes a steel pipe. A pair of guide grooves are provided at the left end of the steel pipe. A movable head is installed on the left side of the steel pipe. Support seats are provided on both the left and right sides of the steel pipe. Each support seat includes a main support plate. A plurality of rail grooves arranged at equal angles are provided on the side of the main support plate away from the steel pipe. A limiting groove is provided on the side of each rail groove closest to the steel pipe, located inside the main support plate. A limiting guide block is slidably connected to the inner side of each limiting guide block. An extension support plate, slidably connected to the rail groove, is fixedly connected to the outer side of each limiting guide block. The extension support plate is located near the steel pipe. A rotating head is fixedly connected to each side, and the rotating heads are all located on the outer side of the main support plate. Side support legs are installed on the outer side of both the left and right ends of the steel pipe. Each side support leg includes a fixing ring fixed to the outer side of the steel pipe. A damping guide rod is slidably connected in the front and rear through holes of the fixing ring. A base ring sleeved on the outer side of the steel pipe is fixedly connected to the end of the damping guide rod near the support base. Several rotating openings are opened on the side of the base ring near the support base. A support leg is rotatably connected to the inner side of each rotating opening. The end of each support leg away from the base ring is rotatably connected to the rotating head. An adjustment part is installed on the end of the damping guide rod away from the base ring.

[0006] Preferably, the adjusting part includes a push plate fixedly connected to the damping guide rod. The upper inner side of the push plate has a through threaded hole, and a threaded rod is threadedly connected to the inner side of the threaded hole. One end of the threaded rod is rotatably connected to the fixed ring, and the other end of the threaded rod is fixedly connected to a knob.

[0007] Preferably, the movable head includes a seat plate disposed on the left side of the steel pipe, a guide beam fixedly connected to the right side of the seat plate, a pin groove being formed on the right side of the guide beam, and the right end of the guide beam being slidably connected to the guide groove.

[0008] Preferably, the left end face of the main support plate on the right side is fixedly connected to the right end of the steel pipe, the right end face of the main support plate on the left side is fixedly connected to the left end face of the seat plate, and the left support legs are all arranged around the outside of the movable head, with a gap between the left support legs and the movable head.

[0009] Preferably, the end faces of the main support plate and the extension support plate away from the steel pipe are set on the same plane, the inner diameter of the base ring is the same as the diameter of the steel pipe, and the inner curved surface of the base ring fits against the outer curved surface of the steel pipe.

[0010] Compared with the prior art, the beneficial effects of this utility model are: In this invention, the adjustable part, side support legs, and support base are designed to allow the adjustable part to adjust the opening angle of each support leg of the side support legs. The adjustment of the opening angle can adjust the expansion range of the support base in various directions. The expanded part of the support base is reinforced by the side support legs, so that the expanded two-sided support bases, together with the side support legs, can achieve "multi-level, multi-directional, and large-angle" combined support. This enables the multi-layer combined steel support device with adjustable angle to increase the support range in the foundation pit through "multi-level, multi-directional, and large-angle" combined support, solving the problem of excessive number of supports and high cost in the foundation pit due to insufficient end support coverage of existing steel support devices. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram showing the disassembled structure of the flexible head and the steel pipe of this utility model; Figure 3 This is a schematic diagram of the disassembled structure of the support of this utility model; Figure 4 This is a structural schematic diagram of the side support bracket of this utility model; Figure 5 This is a schematic diagram of the structure of the adjustment part of this utility model.

[0012] In the diagram: 1. Steel pipe; 2. Guide groove; 3. Hinged head; 31. Seat plate; 32. Guide beam; 33. Pin groove; 4. Support seat; 41. Main support plate; 42. Rail groove; 43. Limiting groove; 44. Limiting guide block; 45. Extension support plate; 46. Rotary head; 5. Side support bracket; 51. Fixing ring; 52. Damping guide rod; 53. Base ring; 54. Rotary opening; 55. Support leg; 6. Adjustment part; 61. Push plate; 62. Threaded hole; 63. Threaded rod; 64. Knob. Detailed Implementation

[0013] 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.

[0014] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0015] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0016] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms 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, and therefore should not be construed as a limitation on the scope of protection of this invention; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0017] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0018] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this invention.

[0019] Please see Figure 1-5 This utility model provides a technical solution: An angle-adjustable multi-layer combined steel support device includes a steel pipe 1. A pair of guide grooves 2 are provided at the left end of the steel pipe 1. A movable head 3 is installed on the left side of the steel pipe 1. Support seats 4 are provided on both the left and right sides of the steel pipe 1. Each support seat 4 includes a main support plate 41. A plurality of rail grooves 42 arranged at equal angles are provided on the side of the main support plate 41 away from the steel pipe 1. Each rail groove 42 near the steel pipe 1 has a limiting groove 43 located inside the main support plate 41. A limiting guide block 44 is slidably connected to the inner side of each limiting groove 43. An extension support plate 45 slidably connected to the rail groove 42 is fixedly connected to the outer side of each limiting guide block 44. The extension support plate 45 near the steel pipe 1 is fixedly connected to... A rotating head 46 is connected to the outside of the main support plate 41. Side support brackets 5 are installed on the outer sides of the left and right ends of the steel pipe 1. The side support brackets 5 include a fixing ring 51 fixed to the outside of the steel pipe 1. A damping guide rod 52 is slidably connected in the front and rear through holes of the fixing ring 51. A base ring 53 sleeved on the outside of the steel pipe 1 is fixedly connected to the end of the damping guide rod 52 near the support base 4. Several rotating openings 54 are opened on the side of the base ring 53 near the support base 4. A support leg 55 is rotatably connected to the inner side of the rotating opening 54. The end of the support leg 55 away from the base ring 53 is rotatably connected to the rotating head 46. An adjustment part 6 is installed on the end of the damping guide rod 52 away from the base ring 53.

[0020] The adjustment unit 6 includes a push plate 61 fixedly connected to the damping guide rod 52. A through-hole 62 is provided on the upper inner side of the push plate 61. A threaded rod 63 is threadedly connected to the inner side of the threaded hole 62. One end of the threaded rod 63 is rotatably connected to the fixing ring 51, and the other end of the threaded rod 63 is fixedly connected to a knob 64. The opening angle of the side support frame 5 can be adjusted through the adjustment unit 6. The movable head 3 includes a seat plate 31 located on the left side of the steel pipe 1. A guide beam 32 is fixedly connected to the right side of the seat plate 31. A pin groove 33 is provided on the right side of the guide beam 32. The right end of the guide beam 32 is slidably connected to the guide groove 2. This arrangement allows the movable head 3 to guide the displacement of the steel pipe 1. The left end face of the right main support plate 41 is fixedly connected to the right end of the steel pipe 1. The right end face of the left main support plate 41 is fixedly connected to the left end face of the seat plate 31. The left support legs 55 are all arranged around the outside of the movable head 3. There is a gap between the left support legs 55 and the movable head 3. This arrangement ensures that the rotation of the support legs 55 is not affected by the movable head 3, and the support legs 55 will not affect the worker's placement of the jack into the movable head 3. The end faces of the main support plate 41 and the extension support plate 45 away from the steel pipe 1 are set on the same plane. This arrangement allows the extension support plate 45 to assist the main support plate 41 in providing sufficient support to the contact surface after displacement. The inner diameter of the base ring 53 is the same as the diameter of the steel pipe 1. The inner curved surface of the base ring 53 fits against the outer curved surface of the steel pipe 1. This arrangement ensures that the base ring 53 remains stable during displacement.

[0021] Workflow: The operation of the angle-adjustable multi-layer combined steel support device within the foundation shell is as follows: First, use hoisting equipment to horizontally lower the entire steel support device into the foundation pit, placing it in a suspended state. Then, adjust the device's orientation so that the outer end face of the left support 4 is tightly fitted against the corresponding side wall of the foundation pit retaining wall. At this point, the operator places the hydraulic jack between the seat plate 31 of the movable head 3 and the left end of the steel pipe 1, and activates the jack, causing its piston rod to extend outward, pushing the steel pipe 1 to slide synchronously to the right along the guide beam 32. When the right support 4 is tightly fitted against the other side wall of the foundation pit retaining wall and the steel pipe 1 can no longer move to the right, immediately... Stop the oil supply to the jack, maintain the current jacking force, and then the worker selects a suitable width pin plate and inserts it into the pin groove 33 exposed at the left end of the steel pipe 1, thereby locking the axial position of the steel pipe 1 and preventing it from retracting to the left under external force, thus completing the initial support of the device; after completing the axial locking, the worker rotates the knob 64 of the adjusting part 6, and the knob 64 drives the threaded rod 63 to rotate synchronously; under the action of the threaded hole 62, the push plate 61 moves smoothly towards the fixed ring 51, thereby pushing the damping guide rod 52 and the base ring 53 to move forward synchronously, and the displacement of the base ring 53 forces each of the circumferentially distributed support legs 55 to rotate outward simultaneously. As the support leg 55 moves, the angle of the support leg 55 increases accordingly. The end of the support leg 55 closest to the support base 4 drives the corresponding extension support plate 45 to slide outward along the rail groove 42 through the rotating head 46, so that the extension support plate 45 gradually unfolds. When each extension support plate 45 reaches the required unfolding length, the rotating knob 64 is stopped, and the current angle and position are maintained by using the thread self-locking function. At this time, the main support plate 41 of the left support base 4 and the multi-layered, multi-directional extension support plates 45 together form an expanded support surface, which significantly improves the ability to disperse and transmit soil pressure on the retaining wall. Following the same steps, the angle and unfolding degree of the other support base 4 and the side support leg 5 are also adjusted. The section allows the two side supports 4 to work with the side support legs 5 to achieve a "multi-layered, multi-directional, large-angle" combined support. As a result, the support range and force transmission area of ​​the entire steel support device are increased several times. The axial force inside the device can be evenly distributed to a larger area of ​​the retaining structure through the expanded support surface, which significantly reduces the load per unit area. Through the above operations, the angle-adjustable multi-layered combined steel support device can increase the support range in the foundation pit through "multi-layered, multi-directional, large-angle" combined support, which solves the problem of excessive number of supports and high cost in the foundation pit caused by insufficient end support coverage of existing steel support devices.

[0022] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An angle-adjustable multi-layer combined steel support device, comprising a steel pipe (1), characterized in that: A pair of guide grooves (2) are provided at the left end of the steel pipe (1). A movable head (3) is installed on the left side of the steel pipe (1). Supports (4) are provided on both the left and right sides of the steel pipe (1). The support (4) includes a main support plate (41). Several rail grooves (42) are provided at equal angles on the side of the main support plate (41) away from the steel pipe (1). A limiting groove (43) is provided on the side of the rail groove (42) close to the steel pipe (1) and is provided on the inner side of the main support plate (41). A limiting guide block (44) is slidably connected to the inner side of the limiting groove (43). An extension support plate (45) is fixedly connected to the outer side of the limiting guide block (44) and is slidably connected to the rail groove (42). A rotating head (46) is fixedly connected to the side of the extension support plate (45) close to the steel pipe (1). 46) All are set on the outside of the main support plate (41). Side support brackets (5) are installed on the outside of the left and right ends of the steel pipe (1). The side support bracket (5) includes a fixing ring (51) fixed on the outside of the steel pipe (1). Damping guide rods (52) are slidably connected in the front and rear through holes of the fixing ring (51). A base ring (53) sleeved on the outside of the steel pipe (1) is fixedly connected to the end of the damping guide rod (52) near the support base (4). Several turning holes (54) are opened on the side of the base ring (53) near the support base (4). Support legs (55) are rotatably connected to the inside of the turning holes (54). The end of the support leg (55) away from the base ring (53) is rotatably connected to the rotating head (46). An adjustment part (6) is installed on the end of the damping guide rod (52) away from the base ring (53).

2. The angle-adjustable multi-layer combined steel support device according to claim 1, characterized in that: The adjustment part (6) includes a push plate (61) fixedly connected to the damping guide rod (52). The upper inner side of the push plate (61) is provided with a through threaded hole (62). The inner side of the threaded hole (62) is threaded with a threaded rod (63). One end of the threaded rod (63) is rotatably connected to the fixing ring (51), and the other end of the threaded rod (63) is fixedly connected to a knob (64).

3. The angle-adjustable multi-layer combined steel support device according to claim 2, characterized in that: The movable head (3) includes a seat plate (31) disposed on the left side of the steel pipe (1), and a guide beam (32) is fixedly connected to the right side of the seat plate (31). A pin groove (33) is provided on the right side of the guide beam (32), and the right end of the guide beam (32) is slidably connected to the guide groove (2).

4. The angle-adjustable multi-layer combined steel support device according to claim 3, characterized in that: The left end face of the main support plate (41) on the right side is fixedly connected to the right end of the steel pipe (1), the right end face of the main support plate (41) on the left side is fixedly connected to the left end face of the seat plate (31), the support legs (55) on the left side are all arranged around the outside of the movable head (3), and there is a gap between the support legs (55) on the left side and the movable head (3).

5. The angle-adjustable multi-layer combined steel support device according to claim 3, characterized in that: The main support plate (41) and the extension support plate (45) are both set on the same plane on the side away from the steel pipe (1). The inner diameter of the base ring (53) is the same as the diameter of the steel pipe (1). The inner curved surface of the base ring (53) is in contact with the outer curved surface of the steel pipe (1).

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