Supporting device for tunnel construction

Abstract

This invention relates to the field of tunnel construction and provides a support device for tunnel construction, comprising two movable bases, and further comprising: a telescopic support column, each telescopic support column consisting of a vertically arranged tube fixedly connected to the movable base, with a top column slidably inserted inside the tube; when the two movable bases are in contact, the tubes on the movable bases are aligned and in contact; a driving unit is provided at the bottom of each tube, which drives the top column inside the corresponding tube to move vertically; and a top plate, with vertical plates fixedly connected to both sides of the top plate, and a horizontally arranged crossbar fixedly connected between the two vertical plates; and through holes opened at the top of each top column, with the crossbar slidably inserted into the through holes of the top columns on both sides. Its beneficial effect is that, due to the sliding connection between the crossbar and the top column, the two tubes can be separated and moved to both sides, thus providing support for the top plate from both sides, preventing the space in the middle of the tunnel from being occupied.

Description

Technical Field

[0001] This invention belongs to the field of tunnel construction, and in particular relates to a support device for tunnel construction. Background Technology

[0002] Tunnels are engineering structures buried underground, representing a form of human utilization of underground space. Tunnels can be categorized into traffic tunnels, hydraulic tunnels, municipal tunnels, and mining tunnels.

[0003] In the early stages of tunnel construction, the main work is excavation. During the excavation process, support devices are needed. Although the rock and soil are tested and analyzed before tunnel construction, the top of the newly excavated passage is not stable enough. Support devices can prevent some areas from collapsing and can also prevent rock and soil from falling and endangering the safety of construction workers.

[0004] Existing support devices mostly consist of a telescopic support column in the middle, with an arc-shaped structure at the top. The support column can move the arc-shaped structure upwards to provide support. However, in reality, this support column is located in the middle of the tunnel, which greatly affects the on-site construction. Supporting the tunnel by setting up structures on both sides is a more complicated method that requires on-site installation. Summary of the Invention

[0005] The purpose of this invention is to provide a support device for tunnel construction, which aims to solve the problems mentioned in the background art.

[0006] The present invention is implemented as follows: a support device for tunnel construction includes two movable bases, and further includes:

[0007] Telescopic support column includes a vertically arranged tube fixedly connected to a movable base, a top column slidably inserted inside the tube, the tube has a polygonal cross-section, and the side of the tube facing the other tube has an open structure. When the two movable bases are in contact, the tubes on the movable bases are aligned and in contact. A drive unit is provided at the bottom of the tubes on both sides, and the drive unit is used to drive the top column in the corresponding tube to move in the vertical direction.

[0008] The top plate has an arc-shaped structure. Vertical plates are fixedly connected to both sides of the top plate, and horizontal bars are fixedly connected between the two vertical plates. The top of the top columns on both sides is provided with through holes, and the horizontal bars are slidably inserted into the through holes of the top columns on both sides. The cross-section of the horizontal bars is polygonal.

[0009] Preferably, a horizontally arranged limiting mounting plate is fixedly connected to the bottom of the tube body. The driving unit includes a screw that is rotatably mounted on the limiting mounting plate and is inserted into the top column. It also includes a rotating handle that is rotatably mounted on the tube body away from the tube body opening. The rotating handle drives the screw to rotate through a transmission component.

[0010] Preferably, friction discs are fixedly connected to the ends of the rotating handles on both sides facing the other side of the tube, and latches are provided on both sides of the joint of the two tubes. The latches are used to fix the two tubes together. When the two tubes are aligned and fitted, the friction discs inside the two tubes come into contact.

[0011] Preferably, the top plate includes arc-shaped plates located on both sides and corresponding to the positions of the two telescopic support columns. The crossbar includes sleeves slidably inserted into the top columns on both sides, and a straight rod slidably inserted between the sleeves on both sides. One end of the arc-shaped plate is connected to the sleeve through a vertical plate, and the other end of the arc-shaped plate is fixedly connected to a vertically arranged support plate. The support plate is fixedly connected to the other end of the sleeve. The support plate and the vertical plate on the same arc-shaped plate are located on both sides of the corresponding top column.

[0012] Preferably, the arc-shaped plate has a hollow internal structure.

[0013] Preferably, a rectangular groove is provided on the side of the arc plate facing the other arc plate, and counterweight columns are provided in both arc plates, with a canopy of elastic material fixedly connected between the two counterweight columns.

[0014] Preferably, the length of the canopy is less than the length of the straight rod.

[0015] Preferably, a mounting block is rotatably connected to the top of the top column, the through hole is opened on the mounting block, and the sleeve is slidably inserted into the mounting block.

[0016] Preferably, the tube body is made of metal, and a magnetic strip is provided at the opening of one side of the tube body.

[0017] The tunnel construction support device provided by this invention has the following advantages: When in use, the telescopic support column moves the top plate upward, which can support the top of the tunnel. When the two pipes are not separated, the drive unit can control the top column to move upward, so that the top plate moves upward. At this time, the overall support function has been achieved. Due to the sliding connection between the bottom movable base and the crossbar and the top column, the two pipes can be separated and moved to both sides. This forms a support for the top plate from both sides, so that the space in the middle of the tunnel is not occupied, which facilitates on-site construction. Attached Figure Description

[0018] Figure 1 This is a front view of a tunnel construction support device provided in an embodiment of the present invention;

[0019] Figure 2 A cross-sectional view of a tunnel construction support device provided in an embodiment of the present invention;

[0020] Figure 3 This is a schematic diagram of the structure after the tube body is separated, provided in an embodiment of the present invention;

[0021] Figure 4 This is a schematic diagram of another scenario after the tube body is separated, as provided in an embodiment of the present invention;

[0022] Figure 5 for Figure 2 A magnified view of a section at point A in the middle;

[0023] Figure 6 for Figure 4 A magnified view of a section at point B in the middle;

[0024] Figure 7 This is a schematic diagram of the structure of the mounting block provided in an embodiment of the present invention;

[0025] Figure 8 A three-dimensional structural diagram of the friction disk provided in an embodiment of the present invention;

[0026] In the attached diagram: 1-Mobile base; 101-Base plate; 102-Universal caster; 2-Telescopic support column; 201-Pipe body; 202-Top column; 3-Drive unit; 301-Screw; 302-Rotating handle; 303-Transmission component; 4-Top plate; 401-Arc plate; 5-Vertical plate; 6-Horizontal bar; 601-Sleeve; 602-Straight bar; 7-Limit mounting plate; 8-Friction disc; 801-Toothed structure; 9-Lock; 10-Support plate; 11-Mounting block; 12-Rectangular groove; 13-Counterweight column; 14-Canopy. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0028] The specific implementation of the present invention will be described in detail below with reference to specific embodiments.

[0029] like Figure 1 and Figure 2 The diagram shown illustrates the structure of a tunnel construction support device according to an embodiment of the present invention, comprising:

[0030] The two mobile bases 1 also include:

[0031] Telescopic support column 2 includes a vertically arranged tube 201 fixedly connected to the movable base 1. A top column 202 is slidably inserted into the tube 201. The tube 201 has a polygonal cross-section and an open structure on one side facing the other tube 201. When the two movable bases 1 are in contact, the tubes 201 on the movable base 1 are aligned and in contact. A drive unit 3 is provided at the bottom of each tube 201. The drive unit 3 is used to drive the top column 202 in the corresponding tube 201 to move in the vertical direction.

[0032] The top plate 4 has an arc-shaped structure. Vertical plates 5 are fixedly connected to both sides of the top plate 4. A horizontally arranged crossbar 6 is fixedly connected between the two vertical plates 5. The top of the top column 202 on both sides is provided with through holes. The crossbar 6 is slidably inserted into the through holes of the top column 202 on both sides. The cross section of the crossbar 6 is polygonal.

[0033] In one embodiment of the present invention, during use, the telescopic support column 2 drives the top plate 4 to move upward, thus providing support for the tunnel roof. When the two side pipes 201 are not separated, the drive unit 3 can control the top column 202 to move upward, causing the top plate 4 to move upward. At this time, the overall support function is achieved. Due to the sliding connection between the bottom movable base 1 and the crossbar 6 and the top column 202, as... Figure 3 As shown, the two tubes 201 can be separated and moved to both sides, which will support the top plate 4 from both sides, so that the space in the middle of the tunnel will not be occupied, which will facilitate on-site construction.

[0034] In one embodiment of the present invention, the movable base 1 includes a base plate 101, and a plurality of universal casters 102 are fixedly disposed on the bottom of the base plate 101, such as... Figure 5 As shown, a horizontally arranged limiting mounting plate 7 is fixedly connected to the bottom of the inner tube 201. The driving unit 3 includes a screw 301 rotatably mounted on the limiting mounting plate 7, which is inserted into the top column 202. It also includes a rotating handle 302 rotatably mounted on the tube 201 away from the opening of the tube 201. The rotating handle 302 drives the screw 301 to rotate through a transmission component 303. The transmission component 303 can be a bevel gear structure or a friction transmission method. Both tubes 201 are equipped with rotating handles 302. When the top plate 4 is supported, the tubes 201 are not yet separated, and the rotating handles 302 on both sides are close together. At this time, one person can operate the two top columns 202 to move upward with both hands. The tube 201 is made of metal, and a magnetic strip is provided at the opening of one side of the tube 201. When there is no external force, the two tubes 201 can naturally attract each other, which is convenient for handling or moving the entire device.

[0035] like Figure 5 and Figure 8As shown, in a preferred embodiment of the present invention, friction discs 8 are fixedly connected to one end of the rotating handles 302 on both sides facing the other tube 201. Locks 9 are provided on both sides of the joint of the two tubes 201. The locks 9 are used to fix the two tubes 201 together. When the two tubes 201 are aligned and fitted, the friction discs 8 inside the two tubes 201 come into contact.

[0036] In one embodiment, the two tubes 201 can be fixed together by the latch 9. Both friction discs 8 are provided with toothed structures 801. The toothed structures 801 can make the two friction discs 8 mesh together when they come into contact, forming a transmission connection. Therefore, when it is necessary to lift the top plate 4, the two top columns 202 can be driven to rise and fall synchronously by rotating the handle 302 on either side, which is more convenient in actual use.

[0037] like Figure 4 and Figure 6 As shown, in a preferred embodiment of the present invention, the top plate 4 includes arc-shaped plates 401 located on both sides and corresponding to the positions of the two telescopic support columns 2. The crossbar 6 includes sleeves 601 slidably inserted into the top columns 202 on both sides. A straight rod 602 is slidably inserted between the sleeves 601 on both sides. One end of the arc-shaped plate 401 is connected to the sleeve 601 through a vertical plate 5. The other end of the arc-shaped plate 401 is fixedly connected to a vertically arranged support plate 10. The support plate 10 is fixedly connected to the other end of the sleeve 601. The support plate 10 and the vertical plate 5 on the same arc-shaped plate 401 are respectively located on both sides of the corresponding top column 202.

[0038] In one embodiment, by improving the structure of the crossbar 6, the distance that the telescopic supports 2 on both sides can move can be greatly increased. When supporting tunnels of different sizes, the two arc-shaped plates 401 can separate, greatly increasing the adaptability of the device. Figure 7 As shown, the top of the top column 202 is rotatably connected to the mounting block 11, the through hole is opened on the mounting block 11, and the sleeve 601 is slidably inserted into the mounting block 11. This structure allows the sleeve 601 to rotate at a certain angle on the top column 202. When the two tubes 201 are on both sides, the height of the top columns 202 on both sides can be adjusted slightly according to the actual situation. At this time, the crossbar 6 can automatically adjust the angle. Since the top of the tunnel is not necessarily a regular arc structure, the ability to adjust the height of the arc plates 401 on both sides will also increase the applicability of the device.

[0039] like Figure 4 and Figure 6 As shown, in a preferred embodiment of the present invention, the arc plate 401 has a hollow internal structure. The hollow structure of the arc plate 401 can greatly reduce its own weight, making the device lighter and more convenient.

[0040] In one embodiment, a rectangular groove 12 is formed on the side of the arc-shaped plate 401 facing the other arc-shaped plate 401. Counterweight columns 13 are provided in both arc-shaped plates 401, and a canopy 14 of elastic material is fixedly connected between the two counterweight columns 13. When the two arc-shaped plates 401 move away from each other, the canopy 14 between the two arc-shaped plates 401 extends out, thereby filling the gap between the two arc-shaped plates 401 and preventing soil or gravel in this area from falling directly down. 4 can provide good protection, and when the device is not in use, the two arc-shaped plates 401 will move closer to each other and retract. At this time, due to the structural characteristics of the arc-shaped plates 401 and the effect of the counterweight column 13, the canopy 14 will be automatically pulled into the arc-shaped plates 401. When in use, it can automatically extend, which is very convenient. The length of the canopy 14 is less than the length of the straight rod 602, so that after the two arc-shaped plates 401 are separated, the canopy 14 will be in a taut state, which can better support the falling soil or gravel from the top of the tunnel.

[0041] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0042] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A support device for tunnel construction comprising two mobile bases, characterized in that ,Also include: Telescopic support, telescopic support includes fixedly connected to the mobile base and vertical tube, the tube body is slidably inserted with top column, the tube body cross section is polygonal structure, and the tube body is open to the other side of the structure, when the two sides of the mobile base is attached, the mobile base tube is aligned and in the state of attachment, the bottom of the two tubes is provided with a drive unit, the drive unit for driving the corresponding tube in the vertical direction; Top plate, the top plate is an arc structure, the top plate is fixedly connected with vertical plate on both sides, the vertical plate is fixedly connected with a horizontal rod transversely arranged between the two sides, the top column is provided with a through hole on both sides, the horizontal rod is slidably inserted into the through hole of the two top columns, and the cross section of the horizontal rod is polygonal; The bottom of the tube body is fixedly connected with a transversely arranged limiting mounting plate, the drive unit comprises a screw rod rotatably arranged on the limiting mounting plate, the screw rod is inserted into the top column, and a rotating handle is rotatably arranged on the tube body away from the opening side of the tube body, the rotating handle drives the screw rod to rotate through a transmission member; The rotating handle is fixedly connected with a friction disc on one end of the other side of the tube body, and the lock catch is provided on both sides of the joint of the two tubes, the lock catch is used for fixedly connecting the two tubes, when the two tubes are aligned and attached, the friction discs in the two tubes are in contact.

2. The support device for tunnel construction according to claim 1, characterized in that The top plate includes arc-shaped plates located on both sides and corresponding to the positions of the two telescopic supports, the horizontal rod includes sleeves slidably inserted into the top columns on both sides, a straight rod is slidably inserted between the sleeves, one end of the arc-shaped plate is connected with the sleeve through the vertical plate, the other end of the arc-shaped plate is fixedly connected with a vertically arranged support plate, the support plate is fixedly connected to the other end of the sleeve, and the support plate and the vertical plate on the same arc-shaped plate are located on both sides of the corresponding top column.

3. The support device for tunnel construction according to claim 2, characterized in that The arc-shaped plate is internally hollow.

4. The support device for tunnel construction according to claim 3, characterized in that One side of the arc-shaped plate is provided with a rectangular groove, and counterweight columns are arranged in the arc-shaped plates on both sides.

5. The support device for tunnel construction according to claim 4, characterized in that The length of the top plate is less than the length of the straight rod.

6. The support device for tunnel construction according to claim 2, characterized in that The top column is rotatably connected with a mounting block, the through hole is formed in the mounting block, and the sleeve is slidably inserted into the mounting block.

7. The support device for tunnel construction according to claim 1, characterized in that The tube body is made of metal, and a magnetic stripe is arranged at the opening of one side of the tube body.

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