Supporting device for tunnel construction

Abstract

The utility model relates to the field of tunnel construction, and discloses a supporting device for tunnel construction, which comprises a top plate, a buffer supporting device is arranged at the upper end of the top plate, connecting rods are hinged to the left end and the right end of the top plate, supporting rods are hinged to the lower ends of the connecting rods, and adjusting positioning devices are arranged at the lower ends of the supporting rods. The buffer supporting device comprises a supporting plate, and the lower end of the supporting plate is fixedly connected with an elastic supporting rod. Through the arrangement of the linkage rod, the piston rod, the damping bin, the fixing rod, the supporting plate and the elastic supporting rod, when vibration is generated in tunnel construction, the supporting plate can drive the elastic supporting rod to move in the vibration process, and buffering is achieved through the elasticity of the elastic supporting rod; and meanwhile, when the piston rod drives the liquid to flow in the damping bin, the liquid is subjected to large damping, so that vibration reduction protection on vibration of the supporting plate is achieved through buffering and damping, the stability of the whole structure is enhanced, and the service life of the device is prolonged.

Description

Technical Field

[0001] The utility model relates to the field of tunnel construction, in particular to a supporting device for tunnel construction. Background Art

[0002] Tunnel construction refers to the process of digging and building a tunnel underground or underwater. A tunnel is an underground passage used to connect two locations and can be used in roads, railways, subways, water conservancy projects, and mining projects.

[0003] After searching, Chinese patent announcement number: CN219012653U discloses a support device for tunnel construction, including two lifting devices and a lifting pad connected to the middle of the lower surface of each lifting device, each lifting device is connected to a fixed support plate in the middle of the lower edge of the front surface, each fixed support plate is connected to a universal roller in the middle of the lower surface, each lifting device is inserted with a rotating device in the middle of the upper edge of the inner surface, a supporting cross plate is connected at the upper edge between the two rotating devices, and a supporting device is connected to the middle of the upper surface of the supporting cross plate. The staff can adjust the height of the bracket while fixing the legs of the bracket, and can fold the two legs inward to save transportation space, which is convenient for the staff to operate and use.

[0004] However, in actual use, since the upper support components are all rigidly connected, when the overall tunnel structure vibrates during construction, the upper support components will be directly subjected to impact force from the top, thereby affecting its overall service life and structural strength. Therefore, a support device for tunnel construction is proposed to solve the above problem. Utility Model Content

[0005] In order to make up for the above shortcomings, the utility model provides a support device for tunnel construction, aiming to improve the problem in the prior art that the structural vibration generated during the tunnel construction process directly impacts the support device.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a support device for tunnel construction, comprising a top plate, a buffer support device is arranged at the upper end of the top plate, connecting rods are hinged at both left and right ends of the top plate, a support rod is hinged at the lower end of the connecting rod, and an adjustment and positioning device is arranged at the lower end of the support rod;

[0007] The buffer support device includes a support plate, the lower end of the support plate is fixedly connected to an elastic support rod, the outer arc surface of the elastic support rod is fixedly connected to a fixing rod, the outer surface piston of the fixing rod is connected to a piston rod, the upper end of the outer arc surface of the piston rod is hinged with a connecting rod, and the piston at the outer arc surface of the piston rod is connected to a damping chamber.

[0008] As a further description of the above technical solution:

[0009] The adjustment and positioning device includes a rotating block, the upper end of which is fixedly connected to a universal wheel, the lower end of which is fixedly connected to an insertion rod, the lower end of the inner surface of the rotating block is fixedly connected to an elastic telescopic rod, and the movable end of the elastic telescopic rod is fixedly connected to a limiting plate.

[0010] As a further description of the above technical solution:

[0011] The left and right ends of the top plate are both provided with rectangular grooves, the support rod is overall arranged in an L-shape, the lower end of the support rod is provided with a rectangular groove, and the lower end of the support plate is hinged to the linkage rod.

[0012] As a further description of the above technical solution:

[0013] One end of the elastic support rod away from the support plate is fixedly connected to the top plate, and both left and right ends of the fixed rod are fixedly connected to a group of elastic support rods.

[0014] As a further description of the above technical solution:

[0015] A through hole is provided at the center of the inner surface of the piston rod, and a plurality of groups of through holes are provided at one end of the piston rod close to the damping chamber.

[0016] As a further description of the above technical solution:

[0017] The left and right ends of the damping bin are both provided with through holes, the interior of the damping bin is filled with liquid, and the lower surface of the damping bin is fixedly connected to the top plate via a rectangular protrusion.

[0018] As a further description of the above technical solution:

[0019] A threaded groove is provided on the upper surface of the rotating block, a cylindrical through hole is provided at the center of the inner surface of the rotating block, the outer surface of the elastic telescopic rod is rotatably connected to the support rod, and a plurality of slots distributed in a circumferential array are provided on the surface of one end of the support rod close to the limit plate.

[0020] As a further description of the above technical solution:

[0021] One end of the limit plate close to the elastic telescopic rod is provided with a plurality of groups of cylindrical protruding plug rods, and the movable end and the fixed end of the elastic telescopic rod are respectively provided with rectangular protrusions and grooves.

[0022] The utility model has the following beneficial effects:

[0023] 1. In the utility model, the connecting rod, piston rod, damping chamber, fixed rod, support plate and elastic support rod are arranged. When the tunnel construction generates vibration, the support plate will drive the elastic support rod to move during the vibration process and achieve buffering through its elasticity. At the same time, the piston rod drives the liquid to flow inside the damping chamber and it will be subject to greater damping, thereby achieving vibration reduction protection against the vibration of the support plate through buffering and damping, enhancing the stability of its overall structure and extending its service life.

[0024] 2. In the utility model, the elastic telescopic rod, rotating block, limiting plate, supporting rod and inserting rod are arranged. During actual use, the device can be moved by the universal wheel on the upper end of the rotating block. After moving to the specified position, the rotating block is rotated to make the inserting rod inserted into the ground for fixation. Compared with the prior art of fixing by locking the universal wheel, the contact area between the bottom inserting rod and the ground in the technical solution is larger, thereby making the device more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is an overall schematic diagram of a support device for tunnel construction proposed by the utility model;

[0026] Figure 2 A schematic diagram of a buffer support device for a tunnel construction support device proposed by the utility model;

[0027] Figure 3 This is a schematic diagram of the cross section of a damping chamber of a support device for tunnel construction proposed by the utility model;

[0028] Figure 4 A schematic diagram of an adjustment and positioning device for a support device for tunnel construction proposed by the utility model;

[0029] Figure 5 This is a schematic diagram of the cross-section of the lower end of a support rod of a support device for tunnel construction proposed by the utility model.

[0030] Legend:

[0031] 1. Top plate; 2. Buffer support device; 3. Adjustment and positioning device; 4. Connecting rod; 5. Support rod; 201. Linking rod; 202. Piston rod; 203. Damping chamber; 204. Fixed rod; 205. Support plate; 206. Elastic support rod; 301. Universal wheel; 302. Rotating block; 303. Insert rod; 304. Elastic telescopic rod; 305. Limiting plate. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] Reference Figure 1-Figure 3 The utility model provides an embodiment: a support device for tunnel construction, comprising a top plate 1, a buffer support device 2 is arranged at the upper end of the top plate 1, a connecting rod 4 is hinged at both left and right ends of the top plate 1, a supporting rod 5 is hinged at the lower end of the connecting rod 4, and an adjusting positioning device 3 is arranged at the lower end of the supporting rod 5;

[0034] The buffer support device 2 includes a support plate 205, the lower end of the support plate 205 is fixedly connected to an elastic support rod 206, the outer arc surface of the elastic support rod 206 is fixedly connected to a fixed rod 204, the outer surface piston of the fixed rod 204 is connected to a piston rod 202, the upper end of the outer arc surface of the piston rod 202 is hinged with a connecting rod 201, and the outer arc surface of the piston rod 202 is connected to a damping chamber 203.

[0035] Rectangular grooves are provided at both ends of the top plate 1 to accommodate the hinged connection of the connecting rod 4 and its end. The support rod 5 is arranged in an L-shape as a whole. A rectangular groove is provided at the lower end of the support rod 5, so that the universal wheel 301 and the insertion rod 303 can be accommodated to rotate inside it. The lower end of the support plate 205 is hinged to the connecting rod 201, and the connecting rod 201 is arranged in an inclined shape as a whole, so that when it is squeezed by the upper end, it will push the piston rod 202 to move. The end of the elastic support rod 206 away from the support plate 205 is fixedly connected to the top plate 1, and the left and right ends of the fixed rod 204 are fixedly connected to a group of elastic support rods 206. The center of the inner surface of the piston rod 202 is opened It is provided with a through hole, so that it can slide like a piston on the outer surface of the fixed rod 204. The piston rod 202 is provided with multiple groups of through holes at one end close to the damping chamber 203. Therefore, when the damping liquid is squeezed inside the damping chamber 203, the damping liquid cannot completely block its movement, but only hinders its movement. The left and right ends of the damping chamber 203 are provided with through holes, so that the piston rod 202 can slide inside it. The interior of the damping chamber 203 is filled with liquid, which is the damping liquid in the prior art. Therefore, it can form movement damping of the piston rod 202 when it is squeezed. The lower surface of the damping chamber 203 is fixedly connected to the top plate 1 through a rectangular protrusion.

[0036] Reference Figure 1 , Figure 4 as well as Figure 5The adjusting and positioning device 3 includes a rotating block 302, the upper end of the rotating block 302 is fixedly connected to the universal wheel 301, the lower end of the rotating block 302 is fixedly connected to the insertion rod 303, the lower end of the inner surface of the rotating block 302 is fixedly connected to the elastic telescopic rod 304, and the movable end of the elastic telescopic rod 304 is fixedly connected to the limiting plate 305.

[0037] A threaded groove is provided on the upper surface of the rotating block 302, so that it can be fixed with the universal wheel 301 through a threaded connection. A cylindrical through hole is provided at the center of the inner surface of the rotating block 302, so that the elastic telescopic rod 304 can be located inside it. The outer surface of the elastic telescopic rod 304 is rotatably connected to the support rod 5. The surface of one end of the support rod 5 close to the limiting plate 305 is provided with a plurality of groups of slots distributed in a circumferential array. The end of the limiting plate 305 close to the elastic telescopic rod 304 is provided with a plurality of groups of cylindrical protruding cylindrical rods. Therefore, when the cylindrical protrusions on the surface of the limiting plate 305 are inserted into the internal slots of the support rod 5, the positions of the elastic telescopic rod 304 and the rotating block 302 can be limited. The movable end and the fixed end of the elastic telescopic rod 304 are respectively provided with rectangular protrusions and grooves, so that the movable end and the fixed end always maintain the same angle, and cannot independently produce angular deviation.

[0038] Working principle: When the device is in use, it is necessary to keep the universal wheel 301 in the adjustment positioning device 3 at the lower end of the support rod 5 in contact with the ground at all times. At this time, the device can be pushed to the area waiting to be installed. When it reaches the designated area, the limit plate 305 can be pulled outward. At this time, the cylindrical protrusion on the surface of the limit plate 305 will move away from the support rod 5. At the same time, the limit plate 305 can be rotated as a whole to drive the elastic telescopic rod 304 and the rotating block 302 to rotate as a whole, and finally the lower end of the insertion rod 303 contacts the ground. At this time, by pressing the device, the device can be fixed to the designated area through the auxiliary fixation of the lower insertion rod 303.

[0039] At the same time, after the device is unfolded, the support plate 205 at its top will contact the top of the tunnel and provide support for it. When the internal structure of the tunnel vibrates, the support plate 205 will directly squeeze the elastic support rod 206 below so that it can buffer the impact force through its own elastic deformation ability. At the same time, the support plate 205 will also drive the piston rod 202 to move into the damping bin 203 through its lower end connecting rod 201 and squeeze the damping liquid stored in the damping bin 203. At this time, the damping liquid will form movement damping of the piston rod 202 through its own properties, thereby achieving vibration reduction protection for the device through damping and buffering effects.

[0040] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A support device for tunnel construction, comprising a top plate (1), characterized in that: The upper end of the top plate (1) is provided with a buffer support device (2), the left and right ends of the top plate (1) are both hinged with connecting rods (4), the lower end of the connecting rod (4) is hinged with a supporting rod (5), and the lower end of the supporting rod (5) is provided with an adjusting positioning device (3); The buffer support device (2) comprises a support plate (205), the lower end of the support plate (205) is fixedly connected to an elastic support rod (206), the outer arc surface of the elastic support rod (206) is fixedly connected to a fixed rod (204), the outer surface piston of the fixed rod (204) is connected to a piston rod (202), the upper end of the outer arc surface of the piston rod (202) is hinged to a connecting rod (201), and the outer arc surface of the piston rod (202) is connected to a damping chamber (203).

2. A tunnel construction support device according to claim 1, characterized in that: The adjusting and positioning device (3) comprises a rotating block (302), the upper end of the rotating block (302) is fixedly connected to a universal wheel (301), the lower end of the rotating block (302) is fixedly connected to an insertion rod (303), the lower end of the inner surface of the rotating block (302) is fixedly connected to an elastic telescopic rod (304), and the movable end of the elastic telescopic rod (304) is fixedly connected to a limiting plate (305).

3. A tunnel construction support device according to claim 1, characterized in that: The left and right ends of the top plate (1) are both provided with rectangular grooves, the support rod (5) is overall arranged in an L-shape, the lower end of the support rod (5) is provided with a rectangular groove, and the lower end of the support plate (205) is hinged to the linkage rod (201).

4. A tunnel construction support device according to claim 1, characterized in that: One end of the elastic support rod (206) away from the support plate (205) is fixedly connected to the top plate (1), and both left and right ends of the fixed rod (204) are fixedly connected to a group of elastic support rods (206).

5. A tunnel construction support device according to claim 1, characterized in that: A through hole is provided at the center of the inner surface of the piston rod (202), and a plurality of groups of through holes are provided at one end of the piston rod (202) close to the damping chamber (203).

6. A tunnel construction support device according to claim 1, characterized in that: Through holes are provided at both left and right ends of the damping chamber (203); the interior of the damping chamber (203) is filled with liquid; and the lower surface of the damping chamber (203) is fixedly connected to the top plate (1) via a rectangular protrusion.

7. A tunnel construction support device according to claim 2, characterized in that: A threaded groove is provided on the upper surface of the rotating block (302), a cylindrical through hole is provided at the center of the inner surface of the rotating block (302), the outer surface of the elastic telescopic rod (304) is rotatably connected to the support rod (5), and a plurality of groups of slots distributed in a circumferential array are provided on the surface of one end of the support rod (5) close to the limiting plate (305).

8. A tunnel construction support device according to claim 2, characterized in that: One end of the limiting plate (305) close to the elastic telescopic rod (304) is provided with a plurality of groups of cylindrical protruding plug rods, and the movable end and the fixed end of the elastic telescopic rod (304) are respectively provided with rectangular protrusions and grooves.

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