A steel arch quick fixing device for tunnel construction

Abstract

The utility model provides a kind of steel arch quick fixing device for tunnel construction, belong to steel arch construction field, including steel arch, support component and fixed component;The bottom inner side of steel arch is equipped with base;The utility model: square sleeve is installed in the surface both ends of base, and support column is slidably inserted in the inside of square sleeve, and horizontal bar is installed in the top of both end support column, and arc-shaped support bracket is hingedly installed in the top of horizontal bar by hinged support, by adjusting the angle of arc-shaped support bracket, so that it is adhered with steel arch bending surface, and hydraulic oil cylinder drives support column to follow lifting by horizontal bar, so that arc-shaped support bracket is driven to follow lifting, satisfy to support steel arch of different height, replace to adopt lock foot anchor pipe cooperation welding fixed mode, it is convenient to quickly support steel arch.

Description

Technical Field

[0001] This utility model relates to the field of steel arch frame construction, specifically a quick fixing device for steel arch frames used in tunnel construction. Background Technology

[0002] As the core component of initial tunnel support, the quality of steel arch fixing and construction efficiency directly determine the stability of the tunnel excavation face. Especially in risky conditions such as water-rich soft surrounding rock and high ground stress fracture zones, steel arches need to be fixed within a short time after excavation to control surrounding rock deformation. Currently, the fixing methods for steel arches in tunnel construction generally suffer from dual bottlenecks in efficiency and stability, making it difficult to adapt to the rapid construction needs under complex geological conditions. Existing steel arch installation methods are inefficient, using a "U-shaped clamp + bolt tightening + on-site welding" method. Fixing a single steel arch requires 6-8 people to work together, which is time-consuming. Furthermore, bolt tightening is easily affected by tunnel dust, causing jamming, and the anchoring stability is insufficient. Ordinary locking anchor pipes require manual control of the driving angle, which can easily lead to loose connections with the steel arch. Under the convergence effect of the surrounding rock, the steel arch is prone to sinking or shifting. Utility Model Content

[0003] The purpose of this invention is to provide a quick fixing device for steel arch frames used in tunnel construction, so as to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a quick fixing device for steel arch frames in tunnel construction, comprising a steel arch frame, a support assembly, and a fixing assembly; Wherein: a base is provided on the inner side of the bottom of the steel arch frame, and a fixed seat is installed in the middle of the base; The support assembly includes square sleeves fixedly installed at both ends of the base surface. Support columns are slidably inserted inside the square sleeves at both ends. A crossbar is fixedly installed on the top of the two support columns. A hinge support is installed on the top of the crossbar. An arc-shaped support bracket corresponding to the shape of the steel arch frame is hingedly installed inside the hinge support. The arc-shaped support bracket is in contact with the inner side of the steel arch frame. A hydraulic cylinder is fixedly installed on the top of the fixed seat. The telescopic end of the hydraulic cylinder is connected to the bottom of the crossbar. The fixing component includes threaded holes on both sides of the arc-shaped support bracket. The inside of each threaded hole is threaded with a fixing bolt. A fixing clamp is rotatably installed at one end of the fixing bolt. The fixing clamp is inserted inside the steel arch frame. A fixing handle is installed at the other end of the fixing bolt.

[0005] As a preferred embodiment of this utility model: a hydraulic oil tank is installed on one side of the fixed base, an oil pump is installed on the top of the hydraulic oil tank, and a reversing valve is installed on one side of the top of the hydraulic oil tank.

[0006] As a preferred embodiment of this utility model: the bottom and top of the hydraulic cylinder are respectively connected to oil pipe joints, and the reversing valve is connected to the oil pipe joints through a delivery pipe.

[0007] As a preferred embodiment of this utility model: an electric hydraulic cylinder is hinged to the outer side of both ends of the square sleeve, a support arm is hinged to the bottom of the outer side of the square sleeve, an anchoring claw is hinged to the front end of the support arm, and the telescopic end of the electric hydraulic cylinder is hinged to the middle of the surface of the support arm.

[0008] As a preferred embodiment of this utility model, the square sleeve, the support column, and the arc-shaped support bracket are all made of steel.

[0009] As a preferred embodiment of this utility model, a dust cover is installed on the end cover surface of the hydraulic cylinder.

[0010] Compared with the prior art, the beneficial effects of this utility model are: (1) Square sleeves are installed at both ends of the base surface. Support columns are slidably inserted inside the square sleeves. Horizontal bars are installed at the top of the support columns at both ends. Arc-shaped support brackets are hinged to the top of the horizontal bars through hinged supports. By adjusting the angle of the arc-shaped support brackets, they are made to fit with the curved surface of the steel arch frame. The hydraulic cylinder drives the support columns to rise and fall through the horizontal bars, thereby driving the arc-shaped support brackets to rise and fall as well. This satisfies the need to support steel arch frames of different heights, replacing the use of locking foot anchor pipes and welding fixing method, and facilitating the rapid support of the steel arch frame. (2) Threaded holes are provided on both sides of the arc-shaped support bracket. A fixing bolt is rotatably installed inside the threaded hole. A fixing clamp is rotatably installed at one end of the fixing bolt. When the arc-shaped support bracket contacts the steel arch frame for support, the fixing clamp at one end of the fixing bolt is driven by rotating the fixing handle to fix and clamp the steel arch frame, so as to prevent the steel arch frame from sinking or shifting due to the convergence of the surrounding rock, and thus provide stable support. 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 of the support component structure of this utility model; Figure 3 This is a schematic diagram of the fixing component structure of this utility model; Figure 4 This is a schematic diagram of the oil pump installation structure of this utility model.

[0012] In the diagram: 1. Steel arch frame; 2. Base; 3. Fixed seat; 4. Support assembly; 41. Square sleeve; 42. Support column; 43. Crossbar; 44. Hinge support; 45. Arc-shaped support bracket; 46. Hydraulic cylinder; 5. Fixed assembly; 51. Threaded hole; 52. Fixing bolt; 53. Fixing clamp; 54. Fixing handle; 6. Hydraulic oil tank; 7. Oil pump; 8. Reversing valve; 9. Oil pipe joint; 10. Electric cylinder; 11. Support arm; 12. Anchor claw; 13. Dust cover. Detailed Implementation

[0013] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0014] Please see Figures 1-4 A quick fixing device for steel arch frame in tunnel construction includes: steel arch frame 1, support component 4 and fixing component 5; a base 2 is provided on the inner side of the bottom of the steel arch frame 1, and a fixing seat 3 is installed in the middle of the base 2; Please see Figure 1 , Figure 2 The support assembly 4 includes square sleeves 41 fixedly installed at both ends of the surface of the base 2. Support columns 42 are slidably inserted inside the square sleeves 41 at both ends. A crossbar 43 is fixedly installed on the top of the two support columns 42. A hinge support 44 is installed on the top of the crossbar 43. An arc-shaped support bracket 45 corresponding to the shape of the steel arch frame 1 is hinged inside the hinge support 44. The arc-shaped support bracket 45 is in contact with the inner side of the steel arch frame 1. A hydraulic cylinder 46 is fixedly installed on the top of the fixed base 3. The telescopic end of the hydraulic cylinder 46 is connected to the bottom of the crossbar 43.

[0015] In practical use: Square sleeves 41 are installed at both ends of the surface of the base 2. Support columns 42 are slidably inserted inside the square sleeves 41. Horizontal bars 43 are installed on the top of the support columns 42 at both ends. An arc-shaped support bracket 45 is hinged to the top of the horizontal bar 43 through a hinge support 44. By adjusting the angle of the arc-shaped support bracket 45, it is made to fit with the curved surface of the steel arch frame 1. The hydraulic cylinder 46 drives the support columns 42 to rise and fall through the horizontal bar 43, thereby driving the arc-shaped support bracket 45 to rise and fall as well. This satisfies the need to support steel arch frames 1 of different heights, replacing the use of locking foot anchors and welding fixation, and facilitating quick support of the steel arch frame 1.

[0016] Please see Figure 1 , Figure 3 The fixing component 5 includes threaded holes 51 on both sides of the arc-shaped support bracket 45. The inside of the threaded holes 51 on both sides is threaded with fixing bolts 52. One end of the fixing bolt 52 is rotatably mounted with a fixing clamp 53, which is inserted inside the steel arch frame 1. The other end of the fixing bolt 52 is mounted with a fixing handle 54.

[0017] In practical use: threaded holes 51 are provided on both sides of the arc-shaped support bracket 45. A fixing bolt 52 is rotatably installed inside the threaded hole 51. A fixing clamp 53 is rotatably installed at one end of the fixing bolt 52. When the arc-shaped support bracket 45 contacts and supports the steel arch frame 1, the fixing handle 54 is rotated to drive the fixing clamp 53 at one end of the fixing bolt 52 to fix and clamp the steel arch frame 1, so as to prevent the steel arch frame 1 from sinking or shifting due to the convergence of the surrounding rock, thus providing stable support.

[0018] Please see Figure 4 A hydraulic oil tank 6 is installed on one side of the fixed base 3, an oil pump 7 is installed on the top of the hydraulic oil tank 6, a reversing valve 8 is installed on one side of the top of the hydraulic oil tank 6, and oil pipe joints 9 are connected to the bottom and top of the hydraulic cylinder 46 respectively. The reversing valve 8 is connected to the oil pipe joint 9 through a delivery pipe.

[0019] In practical use: A hydraulic oil tank 6 is installed on one side of the fixed base 3. When the oil pump 7 works, the hydraulic oil in the hydraulic oil tank 6 enters the oil supply pipe through the reversing valve 8, so that the reversing valve 8 is connected to the oil pipe joint 9 on the surface of the hydraulic cylinder 46 through the oil supply pipe. By controlling the reversing valve 8, the hydraulic cylinder 46 can be adjusted to lift and lower, so as to meet the support requirements of the tunnel construction for different height positions of the steel arch frame 1.

[0020] Please see Figure 1 , Figure 2 Electric cylinders 10 are hinged to the outer sides of the square sleeves 41 at both ends. Support arms 11 are hinged to the bottom of the outer side of the square sleeves 41. An anchoring claw 12 is hinged to the front end of the support arm 11. The telescopic end of the electric cylinder 10 is hinged to the middle of the surface of the support arm 11.

[0021] In practical use: An electric cylinder 10 is hinged to the outer side of the square sleeve 41, and a support arm 11 is hinged to the bottom of the outer side of the square sleeve 41. The telescopic end of the electric cylinder 10 is hinged to the middle of the surface of the support arm 11. The electric cylinder 10 drives the anchoring claw 12 at the front end of the support arm 11 to penetrate into the ground, thereby improving the stability of the support assembly 4.

[0022] Please see Figure 2 The square sleeve 41, the support column 42, and the arc-shaped support bracket 45 are all made of steel.

[0023] In practical use: the square sleeve 41, the support column 42, and the arc-shaped support bracket 45 are all made of steel to meet the requirements of supporting force.

[0024] Please see Figure 4 The end cap surface of the hydraulic cylinder 46 is fitted with a dust cover 13.

[0025] In practical use: The end cover surface of the hydraulic cylinder 46 is equipped with a dust cover 13 to protect against dust and prevent oil sludge from mixing and adhering to the cylinder end cover.

[0026] Square sleeves 41 are installed at both ends of the surface of the base 2. Support columns 42 are slidably inserted inside the square sleeves 41. Horizontal bars 43 are installed on the top of the support columns 42 at both ends. An arc-shaped support bracket 45 is hinged to the top of the horizontal bar 43 via a hinge support 44. By adjusting the angle of the arc-shaped support bracket 45, it is made to fit against the curved surface of the steel arch frame 1. The hydraulic cylinder 46 drives the support columns 42 to rise and fall along with the horizontal bar 43, thereby driving the arc-shaped support bracket 45 to rise and fall as well. This satisfies the need to support steel arch frames 1 of different heights, replacing the method of using locking foot anchors and welding fixation. It facilitates quick support of the steel arch frame 1. When the arc-shaped support bracket 45 contacts and supports the steel arch frame 1, the fixing handle 54 is rotated to drive the fixing clamp 53 at one end of the fixing bolt 52 to fix and clamp the steel arch frame 1, preventing the steel arch frame 1 from sinking or shifting due to the convergence of the surrounding rock, thus providing stable support.

[0027] The contents not described in detail in this description are existing technologies known to those skilled in the art. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A quick-fixing device for steel arch frames used in tunnel construction, characterized in that, include: A steel arch frame (1) is provided with a base (2) on the inner side of the bottom of the steel arch frame (1), and a fixed seat (3) is installed in the middle of the base (2). The support assembly (4) includes square sleeves (41) fixedly installed at both ends of the surface of the base (2). Support columns (42) are slidably inserted inside the square sleeves (41) at both ends. A crossbar (43) is fixedly installed on the top of the two support columns (42). A hinge support (44) is installed on the top of the crossbar (43). An arc-shaped support bracket (45) corresponding to the shape of the steel arch frame (1) is hinged inside the hinge support (44). The arc-shaped support bracket (45) is in contact with the inner side of the steel arch frame (1). A hydraulic cylinder (46) is fixedly installed on the top of the fixed seat (3). The telescopic end of the hydraulic cylinder (46) is connected to the bottom of the crossbar (43). The fixing component (5) includes threaded holes (51) on both sides of the arc-shaped support bracket (45). The threaded holes (51) on both sides are threaded with fixing bolts (52). A fixing clamp (53) is rotatably installed on one end of the fixing bolt (52). The fixing clamp (53) is inserted inside the steel arch frame (1). A fixing handle (54) is installed on the other end of the fixing bolt (52).

2. The quick fixing device for steel arch frames in tunnel construction according to claim 1, characterized in that: A hydraulic oil tank (6) is installed on one side of the fixed base (3), an oil pump (7) is installed on the top of the hydraulic oil tank (6), and a reversing valve (8) is installed on one side of the top of the hydraulic oil tank (6).

3. The rapid fixing device for steel arch frames used in tunnel construction according to claim 2, characterized in that: The bottom and top of the hydraulic cylinder (46) are respectively connected to oil pipe joints (9), and the reversing valve (8) is connected to the oil pipe joints (9) through the delivery pipe.

4. The quick fixing device for steel arch frames used in tunnel construction according to claim 1, characterized in that: Electric cylinders (10) are hinged to the outer sides of the square sleeves (41) at both ends. A support arm (11) is hinged to the bottom of the outer side of the square sleeve (41). An anchoring claw (12) is hinged to the front end of the support arm (11). The telescopic end of the electric cylinder (10) is hinged to the middle of the surface of the support arm (11).

5. The rapid fixing device for steel arch frames used in tunnel construction according to claim 1, characterized in that: The square sleeve (41), support column (42) and arc-shaped support bracket (45) are all made of steel.

6. The rapid fixing device for steel arch frames used in tunnel construction according to claim 1, characterized in that: The end cap surface of the hydraulic cylinder (46) is fitted with a dust cover (13).

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