Open cut tunnel supporting structure

Abstract

The utility model relates to the technical field of tunnel supporting, and discloses an open cut tunnel supporting structure which comprises a base, and a supporting column is arranged on the top of the base. According to the open-cut tunnel supporting structure, by arranging the top protection assembly and the edge protection assembly, when adjustment is needed, two positioning bolts are screwed out from the interiors of two extension plates firstly, then two strip-shaped plates are pulled towards the two sides to adapt to arc-shaped top plates with different radians, and after adaptation is completed, the positioning bolts are screwed into the extension plates for positioning; and finally, a fixing column at the bottom of an arc-shaped top plate is inserted into a connecting base and connected through a limiting bolt, a stepping motor, a second gear and a first gear are matched, a threaded rod is made to rotate, at the moment, two threaded cylinders drive two supporting side plates to move back to back or relatively, and the supporting effect is achieved. And therefore, the purpose of adjusting according to the size of the tunnel is achieved, the practicability of the device is improved, and workers can use the device conveniently.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel support, in particular to an open-cut tunnel support structure. Background Technique

[0002] During the process of open-cut tunnels, it is necessary to support and protect the tunnels during construction to prevent situations such as tunnel collapses and ground settlements during construction, and reduce the impact on existing buildings.

[0003] At present, the sizes of existing tunnel support structures are fixed and cannot be adjusted according to the sizes of tunnels, which affects the practicality of the structures. Therefore, an open-cut tunnel support structure is proposed to solve the above-mentioned technical problems. Content of the Utility Model

[0004] (I) Technical Problems to be Solved

[0005] In view of the deficiencies of the prior art, the utility model provides an open-cut tunnel support structure, which has the advantages of being adjustable according to the size of the tunnel, etc., and solves the problems that the sizes of existing tunnel support structures are fixed and cannot be adjusted according to the tunnels, affecting the practicality of the structures.

[0006] (II) Technical Solutions

[0007] ] To achieve the purpose of being adjustable according to the size of the tunnel, the utility model provides the following technical solutions: an open-cut tunnel support structure, including a base, a support column is arranged on the top of the base, two threaded fixing cones are arranged on the left and right sides of the top of the support column and are distributed symmetrically front and back, a connecting plate is arranged on the top of the support column, two extension plates are arranged on the inner wall of the connecting plate and are distributed symmetrically left and right, strip plates located on the left and right sides of the connecting plate are arranged on the opposite sides of the two extension plates respectively, positioning bolts respectively threadedly connected to the interiors of the two extension plates are arranged on the left and right sides of the bottom of the connecting plate, a roof protection component clamped to the tops of the two strip plates is arranged on the top of the connecting plate, and a side protection component is arranged on the outside of the support column;

[0008] The roof protection component includes a connecting seat, a connecting seat is arranged on the top of the connecting plate, a fixing column is arranged inside the connecting seat, an arc-shaped roof plate is arranged on the top of the fixing column, the arc-shaped roof plate is connected to the tops of the two strip plates, and a limit bolt penetrating through the fixing column at one end and extending to the right side of the connecting seat is arranged on the left side wall of the connecting seat;

[0009] The edge protection assembly includes a threaded rod. The left side wall of the support column is provided with a threaded rod extending to its right side. A first gear is provided on the outside of the threaded rod on the left side of the support column. Limiting rods are provided on both the left and right side walls of the support column below the threaded rod. Two threaded cylinders are provided on the outside of the threaded rod and located on the left and right sides of the support column, respectively. Limiting plates are provided on the outside of the two threaded cylinders and respectively fitted outside the two limiting rods. A stepper motor is provided on the left side wall of the support column. A second gear that meshes with the outside of the first gear is provided at the output shaft of the stepper motor. Support side plates are provided on the opposite sides of the two threaded cylinders.

[0010] Preferably, a circular rotating knob is fixedly connected to the top of each of the two threaded fixing cones.

[0011] Preferably, both limiting plates have through holes that are adapted to the limiting rod inside.

[0012] Preferably, the extension plate has a number of first threaded holes that are equidistant from left to right, and the first threaded holes are adapted to the positioning bolts.

[0013] Preferably, the external thread of the limiting bolt is connected to two limiting nuts located on the left and right sides of the connecting seat, and the interior of the fixing column is provided with a second threaded hole that matches the limiting bolt.

[0014] (III) Beneficial Effects

[0015] Compared with the prior art, this utility model provides a support structure for open-cut tunnels, which has the following characteristics:

[0016] Beneficial effects:

[0017] 1. This open-cut tunnel support structure, by setting up a roof support assembly and a side support assembly, allows for adjustment when needed. First, two positioning bolts are unscrewed from the inside of the two extension plates. Then, the two strip plates are pulled to both sides to adapt to the curved roof plates with different curvatures. After adaptation, the positioning bolts are screwed into the inside of the extension plates for positioning. Finally, the fixing column at the bottom of the curved roof plate is inserted into the inside of the connecting seat and connected by the limit bolt. Then, through the cooperation of the stepper motor, the second gear and the first gear, the threaded rod is rotated. At this time, the two threaded cylinders drive the two support side plates to move back and forth or relative to each other, thereby achieving the purpose of adjustment according to the size of the tunnel and improving the practicality of the device.

[0018] 2. This open-cut tunnel support structure, by setting threaded fixing cones and rotating four threaded fixing cones to screw them into the ground, can improve the placement stability of the support structure and further improve the practicality of the device. Attached Figure Description

[0019] Figure 1 This is a schematic structural diagram of the utility model;

[0020] Figure 2 For the utility model Figure 1 An enlarged schematic diagram of part A in it.

[0021] In the figure: 1, base; 2, pillar; 3, threaded fixing cone; 4, connecting plate; 5, extension plate; 6, strip plate; 7, positioning bolt; 8, roof protection component; 81, connecting seat; 82, fixing column; 83, arc top plate; 84, limit bolt; 9, side protection component; 91, threaded rod; 92, first gear; 93, limit rod; 94, threaded cylinder; 95, limit plate; 96, stepper motor; 97, second gear; 98, support side plate. Specific implementation manners

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0023] Please refer to Figure 1-2 , an open-cut tunnel support structure, including a base 1. A pillar 2 is fixedly connected to the top of the base 1. On the top of the pillar 2, two threaded fixing cones 3 are symmetrically distributed in the front and back and are threadedly connected to the left and right sides respectively. Circular rotation knobs are fixedly connected to the tops of the threaded fixing cones 3. A connecting plate 4 is fixedly connected to the top of the pillar 2. Two extension plates 5 are symmetrically distributed in the left and right and are slidably connected to the inner wall of the connecting plate 4. Strip plates 6 located on the left and right sides of the connecting plate 4 are fixedly connected to the opposite sides of the two extension plates 5 respectively. Positioning bolts 7 are threadedly connected to the left and right sides of the bottom of the connecting plate 4 and are threadedly connected to the interiors of the two extension plates 5 respectively. A number of first threaded holes are formed in the interior of the extension plate 5 and are equidistantly distributed in the left and right. The first threaded holes are adapted to the positioning bolts 7.

[0024] The top of the connecting plate 4 is fixedly connected to a top protection assembly 8 that engages with the tops of the two strip plates 6. The top protection assembly 8 includes a connecting seat 81. The top of the connecting plate 4 is fixedly connected to the connecting seat 81. A fixing post 82 is inserted into the inside of the connecting seat 81. An arc-shaped top plate 83 is fixedly connected to the top of the fixing post 82. The arc-shaped top plate 83 engages with the tops of the two strip plates 6. A limiting bolt 84 is threadedly connected to the left side wall of the connecting seat 81, with one end penetrating the fixing post 82 and extending to the right side of the connecting seat 81. Two limiting nuts are threadedly connected to the outside of the limiting bolt 84 and are located on the left and right sides of the connecting seat 81, respectively. The inside of the fixing post 82 is provided with a second threaded hole that matches the limiting bolt 84.

[0025] The support column 2 is externally connected to a protective edge assembly 9, which includes a threaded rod 91. The left side wall of the support column 2 is movably connected to a threaded rod 91 with one end extending to its right side. The threaded rod 91 is externally fixedly connected to a gear 92 located on the left side of the support column 2. The left and right side walls of the support column 2 are both fixedly connected to limiting rods 93 located below the threaded rod 91. The threaded rod 91 is externally threadedly connected to two threaded cylinders 94 located on the left and right sides of the support column 2, respectively. The two threaded cylinders 94 are externally fixedly connected to limiting plates 95, which are respectively sleeved on the outside of the two limiting rods 93. The limiting plates 95 are internally provided with through holes that are adapted to the limiting rods 93. The left side wall of the support column 2 is fixedly connected to a stepper motor 96. The output shaft of the stepper motor 96 is fixedly connected to a second gear 97 that meshes with the outside of the gear 92. The opposite sides of the two threaded cylinders 94 are fixedly connected to support side plates 98.

[0026] It is worth noting that the stepper motor 96 mentioned in this application has an external control switch and a drive power supply, and the stepper motor 96 is a conventional and known device. All standard parts used in this application can be purchased from the market. The specific connection methods of each part are all connected by conventional means such as bolts, rivets, and welding that are mature in the prior art. Furthermore, the machinery, parts, and equipment all adopt conventional models in the prior art. In addition, the circuit connection adopts conventional connection methods in the prior art. The contents not described in detail in the description belong to the prior art known to those skilled in the art, and will not be described in detail here.

[0027] In summary, this open-cut tunnel support structure, by setting up a top support assembly 8 and a side support assembly 9, allows for adjustment when needed. First, two positioning bolts 7 are unscrewed from the inside of the two extension plates 5. Then, two strip plates 6 are pulled to both sides to adapt to the curved top plates 83 with different curvatures. After adaptation, the positioning bolts 7 are screwed into the inside of the extension plates 5 for positioning. Finally, the fixing column 82 at the bottom of the curved top plate 83 is inserted into the inside of the connecting seat 81 and connected by the limiting bolt 84. Then, through the cooperation of the stepper motor 96, the second gear 97, and the first gear 92, the threaded rod 91 is rotated. At this time, the two threaded cylinders 94 drive the two support side plates 98 to move back and forth or relative to each other, thereby achieving the purpose of adjustment according to the size of the tunnel, improving the practicality of the device. By setting up threaded fixing cones 3, rotating the four threaded fixing cones 3 and screwing them into the ground, the placement stability of the support structure can be improved, further enhancing the practicality of the device. This solves the problem that the existing tunnel support structures have fixed dimensions and cannot be adjusted according to the tunnel, affecting the practicality of the structure.

[0028] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0029] 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. A support structure for a tunnel being excavated by open cut methods, including a base (1), characterised in that: The top of the base (1) is provided with a support column (2), the top of the support column (2) is provided with two thread fixing cones (3) which are symmetrically distributed in front and back, the top of the support column (2) is provided with a connecting plate (4), the inner wall of the connecting plate (4) is provided with two extension plates (5) which are symmetrically distributed in left and right, the opposite sides of the two extension plates (5) are respectively provided with strip plates (6) located on the left and right sides of the connecting plate (4), the left and right sides of the bottom of the connecting plate (4) are respectively provided with positioning bolts (7) which are internally threadedly connected with the two extension plates (5), the top of the connecting plate (4) is provided with a roof protection assembly (8) clamped with the top of the two strip plates (6), the outer part of the support column (2) is provided with a side protection assembly (9). The roof protection assembly (8) comprises a connecting seat (81), the top of the connecting plate (4) is provided with a connecting seat (81), the inner part of the connecting seat (81) is provided with a fixed column (82), the top of the fixed column (82) is provided with an arc-shaped top plate (83), the arc-shaped top plate (83) is connected with the top of the two strip plates (6), the left side wall of the connecting seat (81) is provided with a limiting bolt (84) which penetrates through the fixed column (82) and extends to the right side of the connecting seat (81). The side protection assembly (9) comprises a threaded rod (91), the left side wall of the support column (2) is provided with a threaded rod (91) which extends to the right side thereof, the outer part of the threaded rod (91) is provided with a first gear (92) located on the left side of the support column (2), the left and right side walls of the support column (2) are respectively provided with limiting rods (93) located below the threaded rod (91), the outer part of the threaded rod (91) is provided with two thread cylinders (94) which are respectively located on the left and right sides of the support column (2), the outer parts of the two thread cylinders (94) are respectively provided with limiting plates (95) which are sleeved on the outer parts of the two limiting rods (93), the left side wall of the support column (2) is provided with a stepping motor (96), the output shaft of the stepping motor (96) is provided with a second gear (97) which is engaged with the outer part of the first gear (92), the opposite sides of the two thread cylinders (94) are respectively provided with support side plates (98).

2. A tunneling support structure according to claim 1, wherein: The top of each of the two thread fixing cones (3) is fixedly connected with a circular rotating knob.

3. A tunneling shield according to claim 1, wherein: The inner parts of the two limiting plates (95) are respectively provided with perforations which are matched with the limiting rods (93).

4. A tunneling shield according to claim 1, wherein: The inner part of the extension plate (5) is provided with a plurality of first screw holes which are symmetrically distributed in left and right.

5. A tunneling shield structure according to claim 1, wherein: The outer part of the limiting bolt (84) is threadedly connected with two limiting nuts which are respectively located on the left and right sides of the connecting seat (81), the inner part of the fixed column (82) is provided with a second screw hole which is matched with the limiting bolt (84). The inner part of the extension plate (5) is provided with a plurality of first screw holes which are symmetrically distributed in left and right.

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