Tunnel pipe shed construction steel pipe angle adjusting device

Abstract

The invention discloses a tunnel pipe shed construction steel pipe angle adjusting device which comprises a leveling ground, a tunnel pre-reinforcing area, a steel pipe, a tunnel face, a steel pipe mounting opening, an angle adjusting system foundation, a supporting system and an adjusting system, the foundation comprises a fixing screw, a gasket and a nut, and the top end of the foundation is connected with the supporting system; the supporting system is composed of an arc-shaped steel pipe and a transverse plate and is movably embedded in the brake block. The adjusting system is provided with a fixing plate, a transverse movable shaft, a brake block with a fixing groove and the like. The steel pipe angle adjusting and fixing device is suitable for different steel pipes, convenient to install and maintain, capable of improving construction precision and efficiency and reducing potential safety hazards and suitable for tunnel pipe shed construction.

Description

Technical Field

[0001] The invention belongs to the field of tunnel construction pipe-roof steel pipes, and in particular relates to an angle adjustment device for tunnel pipe-roof construction steel pipes. Background Art

[0002] In modern tunnel construction, with the rapid advancement of transportation infrastructure, tunnel projects under various complex geological conditions are constantly emerging. Pipe-roof construction, as a key step in ensuring the safety and stability of tunnel construction, has become increasingly important. Pipe-roof construction involves driving steel pipes along the tunnel axis, outside the tunnel excavation outline, to form an advanced support structure that provides reliable support for subsequent tunnel excavation operations. Precise adjustment of the steel pipe angle plays a crucial role in ensuring the pipe-roof's full support effectiveness. Different geological conditions, such as weak surrounding rock, fault fracture zones, and water-rich strata, require the pipes of the pipe-roof to be installed at specific angles to effectively resist surrounding rock pressure, control deformation, and prevent tunnel collapse. However, current technology for adjusting the steel pipe angle in tunnel pipe-roof construction has numerous shortcomings, severely hindering the quality and efficiency of tunnel construction. Traditional pipe-roof construction equipment often utilizes a direct transmission connection between the drill bit and the pipe-roof, relying on the drill bit to drive the pipe-roof into the tunnel. This connection makes it difficult to pre-adjust the pipe-roof to the desired drilling angle before drilling. When angle adjustment is necessary, construction workers often rely on visual inspection, using mobile equipment to adjust the overall installation foundation. However, manual inspection is subject to significant subjective factors, making accuracy difficult to guarantee. This approach is fundamentally unsatisfactory given the complex geological conditions and high-precision construction requirements. For example, in areas with weak surrounding rock, even the slightest deviation in the pipe roof angle can significantly reduce support effectiveness and increase the risk of tunnel collapse. The construction environment within the tunnel also poses significant challenges to adjusting the steel pipe angle.

[0003] CN205154174U discloses a pipe-roof advance support construction structure for a soft rock tunnel, comprising a drilling rig workshop formed by excavating the tunnel arch outward, a guide wall located at the front side of the drilling rig workshop, a plurality of orifice pipes pre-buried in the guide wall, and a drilling rig and a grouting machine located in the drilling rig workshop; the plurality of orifice pipes are guide pipes for guiding a plurality of pipe-roof pipes, the pipe-roof pipe comprising a pipe body formed by splicing a plurality of pipe sections and a drill bit coaxially installed at the front end of the pipe body, the drill bit being provided with a plurality of grouting holes; a connecting joint for connecting pipe sections is provided at the front end of the drilling drive mechanism of the drilling rig, a grouting interface is provided on the connecting joint, the grouting interface is connected to the grouting port of the grouting machine through a grouting pipe, and the constructed pipe-roof advance support structure can effectively support the soft rock tunnel.

[0004] CN221856746U discloses an angle adjustment device for steel pipes of a tunnel pipe shed, comprising a steel frame, the steel frame comprising a vertical section and an arch section, the arch section being arranged at one end of the vertical section, a fixed plate being detachably mounted on one side of the arch section of the steel frame, a support frame being arranged on the fixed plate, a slider being slidably mounted on the support frame, a driving member being arranged on the support frame, a fixed frame being rotatably connected to the slider on both sides of the fixed frame, a jacket being arranged on the fixed frame, a rotating member being arranged on the slider, and a locking member being arranged on the slider; the fixed plate is mounted on the steel frame, and before installing the steel pipe, the driving member is first adjusted to drive the slider to slide and adjust the position of the fixed frame, and then the rotating member is rotated to drive the fixed frame to rotate and adjust the position of the jacket, the locking member is locked, and the steel pipe is passed between the two jackets on the fixed frame for installation, and the angle of the steel pipe is adjusted by adjusting the upper and lower positions of the fixed frame and rotating the fixed frame.

[0005] During the pipe roof drilling process, a large amount of smoke and dust will be generated, which seriously affects the construction workers' vision, making it difficult to accurately judge the actual position and angle of the pipe roof when manually adjusting the angle, which in turn leads to the occurrence of adjustment errors. At the same time, when the pipe roof is drilled into the tunnel, the equipment will vibrate violently due to the strong resistance of the rock formation. In this case, if precision components such as angle sensors are installed on the equipment to assist in angle adjustment, these components are extremely susceptible to vibration shocks. Not only will the service life be greatly shortened, but the measurement accuracy will also be seriously affected, resulting in inaccurate measurement data and an inability to provide a reliable basis for angle adjustment. Therefore, it is necessary to develop a tunnel pipe roof construction steel pipe angle adjustment device that is suitable for pipe roof construction auxiliary devices with different external insertion angles, which has more important economic and social benefits for construction units. Summary of the Invention

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is: a tunnel pipe roof construction steel pipe angle adjustment device, comprising a leveling ground, a tunnel pre-reinforcement area, a steel pipe, a tunnel face, a steel pipe installation port, an angle adjustment system foundation, an angle adjustment support system and an angle adjustment system; the angle adjustment system foundation comprises a fixed screw, a gasket and a nut; the angle adjustment support system comprises an arc-shaped steel pipe and a transverse plate; the angle adjustment system comprises a fixed plate, a transverse movable shaft, a transverse movable shaft sliding area, an angle adjustment system position fixed shaft, a circular groove, a fixed shaft slot, a jacket, a circular rubber gasket, an angle adjustment system, a fixed screw, a gasket and a nut; the angle adjustment system comprises ... The angle adjustment support system is composed of a degree scale and an angle adjustment support system brake block, and the angle adjustment support system brake block is provided with a fixing groove, a fixing bolt and a fixing hole; a tunnel face is provided on the leveled ground, and the rear of the tunnel face is a tunnel pre-reinforcement area; a plurality of steel pipe installation openings are opened on the edge of the tunnel face along the circumference of the tunnel excavation, and the steel pipes are driven into the tunnel pre-reinforcement area through the steel pipe installation openings; angle adjustment system foundations are symmetrically installed on the leveled ground on both sides in front of the tunnel face, the top of the angle adjustment system foundation is fixedly connected to the angle adjustment support system, and the angle adjustment support system is movably embedded in the angle adjustment support system brake block.

[0007] As a further solution of the present invention: the base of the angle adjustment system is located on a solid foundation, and the top surface is flush with the level of the leveled ground; 4 fixing screws are vertically and evenly pre-embedded in the center of the top surface, and each fixing screw passes upward through the gasket on the top surface of the angle adjustment system foundation, and a nut is installed at the position where the fixing screw passes through the gasket.

[0008] As a further solution of the present invention: the angle adjustment support system is composed of two arc-shaped steel pipes and a transverse plate, and the sum of the diameters of the two arc-shaped steel pipes and the length of the transverse plate is adapted to the length of the fixed groove of the brake block of the angle adjustment support system; the arc-shaped steel pipe is located on the inner side of the fixed groove and corresponds to the position of the fixed hole, and the fixing bolt is rotatably assembled in the fixing hole.

[0009] As a further solution of the present invention: two fixed plates are vertically fixedly installed on the top surface of the brake block of the angle adjustment support system, and a horizontal movable shaft sliding area is provided at the rear end of the horizontal center position of the two fixed plates, and the horizontal movable shaft can move back and forth in the horizontal movable shaft sliding area; the inner sides of the two horizontal movable shafts are respectively fixedly connected to the outer edges of the sleeves, and circular rubber gaskets are circumferentially installed on the inner outer edge of the sleeve, and the front ends of the horizontal center positions of the two fixed plates are provided with an angle adjustment system position fixed shaft, which is placed in the circular grooves of the two fixed plates; an angle scale is provided on the rear side of the circular groove, and a number of fixed shaft clamping grooves communicating with the circular groove are provided on the front side, the length of the angle adjustment system position fixed shaft is greater than the horizontal movable shaft, and can slide in the circular groove; the center position of the fixed shaft clamping groove, the scale value of the angle scale and the center axis of the horizontal movable shaft are on the same straight line, and the angle between the straight line and the horizontal line is consistent with the scale value of the angle scale.

[0010] As a further solution of the present invention: the center line of the jacket and the center of the steel pipe installation opening are in the same straight line, and the inserted steel pipe has a preset external insertion angle.

[0011] As a further solution of the present invention: the inner diameter of the circular rubber gasket is precisely matched to the outer diameter of the steel pipe. Compared with the prior art, the present invention has the following beneficial effects:

[0012] The device achieves precise control of the steel pipe's external insertion angle through an angle adjustment system. The angle scale cooperates with the fixed axis slot to ensure that the angle error is controllable and improve the accuracy of the pipe-roof support. The sliding structure of the arc-shaped steel pipe and the brake block facilitates quick angle adjustment and reduces construction time. The adaptive design of the circular rubber gasket and the jacket enhances the stability of the steel pipe fixation and avoids displacement during construction. The symmetrical foundation structure ensures the overall stability of the device and adapts to the complex working conditions of the tunnel. The various components of the device work together to simplify the operating process and improve construction efficiency, while ensuring the quality of the pipe-roof support and reducing the risk of tunnel excavation, which has significant practical value. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is the main view of the present invention

[0014] Figure 2 This is a side view of the tunnel face perpendicular to the ground in the present invention.

[0015] Figure 3 This is a side view of the tunnel face in the present invention, which is inclined to the ground.

[0016] Figure 4 It is a top view of the present invention.

[0017] Figure 5 This is the basic main view of the angle adjustment system.

[0018] Figure 6 This is a top view of the angle adjustment system foundation.

[0019] Figure 7 Main view of the support tube for angle adjustment.

[0020] Figure 8 for Figure 1 A partial enlarged view of middle B.

[0021] Figure 9 This is a top view of the angle adjustment system.

[0022] Figure 10 This is a side view of the angle adjustment system.

[0023] Figure 11 An enlarged view of the side panel. Description of Reference Numerals

[0024] 1. Leveling ground; 2. Tunnel pre-reinforcement area; 3. Steel pipe; 4. Tunnel face; 5. Steel pipe installation opening; 6. Angle adjustment system foundation; 61. Fixing screw; 62. Washer; 63. Nut; 7. Angle adjustment support system; 71. Arc-shaped steel pipe; 72. Transverse plate; 8. Angle adjustment system; 81. Fixing plate; 82. Transverse movable shaft; 83. Transverse movable shaft sliding area; 84. Angle adjustment system position fixing shaft; 841. Circular groove; 85. Fixed shaft slot; 86. Jacket; 87. Circular rubber gasket; 88. Angle scale; 89. Angle adjustment support system brake block; 891. Fixing groove; 892. Fixing bolt; 893. Fixing hole. DETAILED DESCRIPTION

[0025] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but it should not be understood as a limitation on the scope of protection of the present invention.

[0026] In the present invention, if directions (up, down, left, right, front and back) are described, it is only for the convenience of describing the technical solution of the present invention, and does not indicate or imply that the technical features referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, it cannot be understood as a limitation of the present invention.

[0027] In the present invention, unless otherwise expressly defined, terms such as "disposed," "installed," and "connected" should be interpreted broadly. For example, they may refer to direct connection or indirect connection through an intermediate medium; they may refer to fixed connection, detachable connection, or integral molding; and they may refer to mechanical connection. Persons skilled in the art can reasonably determine the specific meanings of these terms in the present invention based on the specific content of the technical solution.

[0028] like Figure 1-11 The device for adjusting the angle of a steel pipe in tunnel pipe roof construction is shown, comprising a leveled ground 1, a tunnel pre-reinforcement area 2, a steel pipe 3, a tunnel face 4, a steel pipe installation opening 5, an angle adjustment system foundation 6, an angle adjustment support system 7, and an angle adjustment system 8; the angle adjustment system foundation 6 comprises a fixed screw 61, a gasket 62, and a nut 63; the angle adjustment support system 7 comprises an arc-shaped steel pipe 71 and a transverse plate 72; the angle adjustment system 8 comprises a fixed plate 81, a transverse movable shaft 82, a transverse movable shaft sliding area 83, an angle adjustment system position fixing shaft 84, a circular groove 841, a fixed shaft slot 85, a jacket 86, a circular rubber gasket 87, an angle scale 88, and The angle adjustment support system is composed of a brake block 89, and the angle adjustment support system brake block 89 is provided with a fixing groove 891, a fixing bolt 892 and a fixing hole 893; a tunnel face 4 is provided on the leveled ground 1, and the rear of the tunnel face 4 is a tunnel pre-reinforcement area 2; a plurality of steel pipe installation openings 5 ​​are opened on the edge of the tunnel face 4 along the circumference of the tunnel excavation, and the steel pipe 3 is driven into the tunnel pre-reinforcement area 2 through the steel pipe installation opening 5; angle adjustment system foundations 6 are symmetrically installed on the leveled ground 1 on both sides in front of the tunnel face 4, and the top of the angle adjustment system foundation 6 is fixedly connected to the angle adjustment support system 7, and the angle adjustment support system 7 is movably embedded in the angle adjustment support system brake block 89.

[0029] As a further solution of the present invention: the base of the angle adjustment system foundation 6 is located on a solid foundation, and the top surface is flush with the leveled ground 1; four fixing screws 61 are vertically and evenly pre-embedded in the center of the top surface, and each fixing screw 61 passes upward through a gasket 62 on the top surface of the angle adjustment system foundation 6, and a nut 63 is installed at the position where the fixing screw 61 passes through the gasket 62.

[0030] As a further solution of the present invention: the angle adjustment support system 7 is composed of two arc-shaped steel pipes 71 and a transverse plate 72. The sum of the diameters of the two arc-shaped steel pipes 71 and the length of the transverse plate 72 is adapted to the length of the fixing groove 891 of the brake block 89 of the angle adjustment support system; the arc-shaped steel pipe 71 is located on the inner side of the fixing groove 891 and corresponds to the position of the fixing hole 893, and the fixing bolt 892 is rotatably assembled in the fixing hole 893.

[0031] As a further solution of the present invention: the top surface of the brake block 89 of the angle adjustment support system is vertically fixed with two fixed plates 81, and the rear ends of the two fixed plates 81 at the horizontal center position are provided with a horizontal movable shaft sliding area 83, and the horizontal movable shaft 82 can move back and forth in the horizontal movable shaft sliding area 83; the inner sides of the two horizontal movable shafts 82 are respectively fixedly connected to the outer edges of the jackets 86, and the inner outer edges of the jackets 86 are circumferentially installed with circular rubber gaskets 87, and the front ends of the two fixed plates 81 at the horizontal center position are provided with angle adjustment system position fixing shafts 84. The fixed axis 84 of the angle adjustment system is placed in the circular groove 841 of the two fixed plates 81; an angle scale 88 is provided on the rear side of the circular groove 841, and a plurality of fixed axis clamping grooves 85 communicating with the circular groove 841 are provided on the front side. The length of the fixed axis 84 of the angle adjustment system is greater than the transverse movable axis 82 and can slide in the circular groove 841; the center position of the fixed axis clamping groove 85, the scale value of the angle scale 88 and the center axis of the transverse movable axis 82 are in the same straight line, and the angle between the straight line and the horizontal line is consistent with the scale value of the angle scale 88.

[0032] As a further solution of the present invention: the center line of the jacket 86 and the center of the steel pipe installation opening 5 are in the same straight line, and the driven steel pipe 3 has a preset external insertion angle.

[0033] As a further solution of the present invention, the inner diameter of the circular rubber gasket 87 is precisely matched to the outer diameter of the steel pipe 3 . How it works

[0034] When the tunnel opening is excavated, the opening needs to be supported by a pipe shed. The steel pipe installation opening 5 of the tunnel face 4 is laid out and marked, and the ground 1 is leveled as the base surface for the installation of the device, providing a flat and solid benchmark for the subsequent installation of various components. The base of the angle adjustment system foundation 6 is located on a solid foundation, and the top surface is flush with the leveled ground 1 to ensure that the foundation and the ground are well integrated. At the center position of the top surface of the angle adjustment system foundation 6, four fixed screws 61 are evenly embedded vertically. The fixed screws 61 pass upward through the gasket 62 on the top surface, and then the nuts 63 are installed at the position where they pass through the gasket 62. By tightening the nuts 63, the angle adjustment support system 7 can be firmly fixed to the angle adjustment system foundation 6 by utilizing the threaded engagement between the nut and the screw and the increased force area of ​​the gasket 62, providing stable and reliable support for the entire angle adjustment device, and effectively avoiding the accuracy of the angle adjustment affected by the shaking or displacement of the device during the subsequent construction process such as the driving of steel pipes.

[0035] The angle adjustment support system 7 plays an important role in connecting the angle adjustment system base 6 and the angle adjustment system 8 in the device, and also provides a preliminary position adjustment function for angle adjustment. The system is composed of two curved steel pipes 71 and a transverse plate 72. The sum of the diameters of the two curved steel pipes 71 and the length of the transverse plate 72 matches the length of the fixed groove 891 of the angle adjustment support system brake block 89. This dimensional design ensures that the curved steel pipes 71 and the transverse plate 72 can slide within the embedded fixed groove 891. When the position of the angle adjustment support system 7 needs to be adjusted, it is only necessary to loosen the fixing bolt 892. Due to the curved shape of the curved steel pipe 71, it can slide to a certain extent within the fixed groove 891, thereby causing the entire angle adjustment support system 7 to change position. After adjusting to the appropriate position, the fixing bolt 892 is rotated and assembled in the fixing hole 893 and tightened. The tightening force of the bolt is used to fix the arc steel pipe 71 in the current position, thereby achieving the adjustment of the height and horizontal position of the angle adjustment support system 7, providing an adaptive initial installation position and support state for the angle adjustment system 8, and laying the foundation for subsequent more precise angle adjustment.

[0036] The angle adjustment system 8 is the core part of the entire device for achieving precise adjustment of the steel pipe angle. Its various components cooperate with each other to complete the setting, adjustment and fixing of the angle. Two fixed plates 81 are vertically fixedly installed on the top surface of the angle adjustment support system brake block 89. The two fixed plates 81 provide installation carriers for other components. A transverse movable shaft sliding area 83 is provided at the rear end of the transverse center position of the two fixed plates 81, and the transverse movable shaft 82 can move back and forth in the sliding area. The inner sides of the two transverse movable shafts 82 are respectively fixedly connected to the outer edges of the jacket 86, so when the transverse movable shaft 82 moves in the sliding area 83, it will drive the jacket 86 to move back and forth together. The center line of the jacket 86 is in the same straight line as the center of the steel pipe installation port 5. By adjusting the position of the transverse movable shaft 82, it can ensure that the jacket 86 is always aligned with the steel pipe installation port 5, providing an accurate channel for the smooth passage of the steel pipe 3 and angle adjustment.

[0037] For angle adjustment, the front ends of the two fixed plates 81 are equipped with a fixed shaft 84 for the angle adjustment system at the lateral center. This fixed shaft is placed in a circular groove 841 of the two fixed plates 81 and is longer than the lateral movable shaft 82, allowing it to slide within the circular groove 841. An angle scale 88 is located on the rear side of the circular groove 841, and a number of fixed shaft retaining grooves 85 are located on the front side, communicating with the circular groove 841. The center position of the fixed shaft retaining groove 85 and the scale values ​​of the angle scale 88 are aligned with the center axis of the lateral movable shaft 82, and the angle between this line and the horizontal line is consistent with the scale values ​​of the angle scale 88. This key structural design is the core guarantee for achieving precise angle adjustment.

[0038] When the angle of the steel pipe 3 needs to be adjusted, the operator first loosens the angle adjustment system position fixing shaft 84 so that it can slide freely in the circular groove 841. Then, according to the preset extrapolation angle of the steel pipe required for construction, observe the angle scale 88 and slide the angle adjustment system position fixing shaft 84 along the circular groove 841 to the position of the corresponding scale. Since the fixed shaft slot 85 is connected to the circular groove 841 and its position corresponds to the scale value, when the fixed shaft slides to the target scale, it is snapped into the corresponding fixed shaft slot 85 to achieve the fixation of the angle adjustment system position fixing shaft 84. At this time, the straight line formed by the center axis of the horizontal movable shaft 82, the center of the fixed shaft slot 85, and the corresponding scale of the angle scale 88, and the horizontal line is the preset steel pipe extrapolation angle, thereby accurately determining the angle of the steel pipe 3.

[0039] A circular rubber gasket 87 is circumferentially mounted on the inner outer edge of the jacket 86. The inner diameter of the circular rubber gasket 87 precisely matches the outer diameter of the steel pipe 3. When the steel pipe 3 passes through the jacket 86, the circular rubber gasket 87 tightly wraps around the steel pipe 3. This elasticity increases friction between the rubber gasket and the steel pipe 3, preventing axial or radial displacement of the steel pipe 3 during insertion. Furthermore, the rubber gasket provides a buffering and protective effect on the steel pipe 3, preventing damage to the steel pipe surface caused by hard contact between the jacket 86 and the steel pipe 3.

[0040] After the angle is set and the relevant components are fixed, the steel pipe 3 can be driven into the tunnel pre-reinforcement zone 2. Through the jacket 86 and the steel pipe mounting opening 5, the steel pipe 3 is driven into the tunnel pre-reinforcement zone 2 at the preset external insertion angle. Throughout the driving process, the angle adjustment system 8 has precisely fixed the angle of the steel pipe 3, and the jacket 86 and circular rubber gasket 87 provide stability and guidance for the steel pipe 3. This allows the steel pipe 3 to maintain the preset angle and smoothly enter the tunnel pre-reinforcement zone 2, achieving effective pre-reinforcement of the tunnel and providing safety for subsequent tunnel excavation.

[0041] The above is a specific description of the preferred implementation of the present invention, but the invention is not limited to the above embodiments. Those skilled in the art can make various equivalent modifications or substitutions without violating the spirit of the present invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A tunnel pipe roof construction steel pipe angle adjustment device, comprising a leveling ground (1), a tunnel pre-reinforcement area (2), a steel pipe (3), a tunnel face (4), a steel pipe installation port (5), an angle adjustment system foundation (6), an angle adjustment support system (7) and an angle adjustment system (8); the angle adjustment system foundation (6) comprises a fixed screw (61), a gasket (62) and a nut (63); the angle adjustment support system (7) comprises an arc-shaped steel pipe (71) and a transverse plate (72); the angle adjustment system (8) comprises a fixed plate (81), a transverse movable shaft (82), a transverse movable shaft sliding area (83), an angle adjustment system position fixed shaft (84), a circular groove (841), a fixed shaft clamping groove (85), a jacket (86), a circular rubber gasket (87), an angle scale ( 88) and an angle adjustment support system brake block (89), and the angle adjustment support system brake block (89) is provided with a fixing groove (891), a fixing bolt (892) and a fixing hole (893); a tunnel face (4) is provided on the leveled ground (1), and a tunnel pre-reinforcement area (2) is located behind the tunnel face (4); a plurality of steel pipe installation openings (5) are opened along the tunnel excavation circumference at the edge of the tunnel face (4), and the steel pipe (3) is driven into the tunnel pre-reinforcement area (2) through the steel pipe installation openings (5); angle adjustment system foundations (6) are symmetrically installed on the leveled ground (1) on both sides in front of the tunnel face (4), the top of the angle adjustment system foundation (6) is fixedly connected to the angle adjustment support system (7), and the angle adjustment support system (7) is movably embedded in the angle adjustment support system brake block (89).

2. A tunnel pipe roof construction steel pipe angle adjustment device according to claim 1, characterized in that The base of the angle adjustment system foundation (6) is located on a solid foundation, and the top surface is flush with the leveled ground (1); four fixing screws (61) are vertically and evenly pre-buried at the center of the top surface, and each fixing screw (61) passes upward through a gasket (62) on the top surface of the angle adjustment system foundation (6), and a nut (63) is installed at the position where the fixing screw (61) passes through the gasket (62).

3. A tunnel pipe roof construction steel pipe angle adjustment device according to claim 1, characterized in that The angle adjustment support system (7) is composed of two arc-shaped steel pipes (71) and a transverse plate (72). The sum of the diameter of the two arc-shaped steel pipes (71) and the length of the transverse plate (72) matches the length of the fixing groove (891) of the angle adjustment support system brake block (89). The arc-shaped steel pipe (71) is located inside the fixing groove (891) and corresponds to the position of the fixing hole (893). The fixing bolt (892) is rotatably assembled in the fixing hole (893).

4. The device for adjusting the steel pipe angle in tunnel pipe roof construction according to claim 1 is characterized in that The top surface of the angle adjustment support system brake block (89) is vertically fixed with two fixed plates (81), and the rear ends of the two fixed plates (81) at the transverse center position are provided with a transverse movable shaft sliding area (83), and the transverse movable shaft (82) can move forward and backward in the transverse movable shaft sliding area (83); the inner sides of the two transverse movable shafts (82) are respectively fixedly connected to the outer edges of the jacket (86), and a circular rubber gasket (87) is installed along the circumferential direction on the inner outer edge of the jacket (86). The front ends of the two fixed plates (81) at the transverse center position are provided with an angle adjustment system position fixing shaft (84), and the angle adjustment system position fixing shaft (84) is provided. The shaft (84) is placed in the circular grooves (841) of the two fixed plates (81); an angle scale (88) is provided on the rear side of the circular groove (841), and a plurality of fixed shaft clamping grooves (85) communicating with the circular groove (841) are provided on the front side. The length of the fixed shaft (84) of the angle adjustment system position is greater than that of the transverse movable shaft (82) and can slide in the circular groove (841); the center position of the fixed shaft clamping groove (85), the scale value of the angle scale (88) and the center axis of the transverse movable shaft (82) are in the same straight line, and the angle between the straight line and the horizontal line is consistent with the scale value of the angle scale (88).

5. The device for adjusting the steel pipe angle in tunnel pipe roof construction according to claim 1 is characterized in that The center line of the jacket (86) and the center of the steel pipe installation opening (5) are in the same straight line, and the driven steel pipe (3) has a preset external insertion angle.

6. The device for adjusting the steel pipe angle in tunnel pipe roof construction according to claim 1, characterized in that The inner diameter of the circular rubber gasket (87) is precisely matched to the outer diameter of the steel pipe (3).

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