Tunnel lagging jack supporting device

Abstract

The utility model discloses a tunnel lagging jack supporting device, which relates to the technical field of lagging jack supporting devices and comprises a mounting plate, a fixed column is arranged in the middle of the top end of the mounting plate, a sliding column is arranged in the fixed column, the fixed column and the sliding column are connected through a longitudinal adjusting mechanism, and a supporting plate is arranged at the top end of the sliding column. Sliding grooves are formed in the top end and the two ends of one side of the supporting plate, the two sets of sliding grooves communicate with each other, and limiting pieces matched with the sliding grooves are symmetrically arranged on the two sides of the top end of the supporting plate; supporting columns are arranged on the periphery of the bottom end of the mounting plate, fixing rods are arranged on the two sides of each supporting column, and the outer sides of the fixing rods are sleeved with stable adjusting mechanisms. The supporting device can be adjusted at will according to the shape and characteristics of the ground to adapt to various uneven grounds, the adaptability and stability of the supporting device in different environments are improved, meanwhile, the supporting height and the transverse distance can be adjusted, and lagging jacks with different widths and heights can be supported.

Description

Technical Field

[0001] The utility model relates to the technical field of arch support devices, in particular to a tunnel arch support device. Background Art

[0002] A tunnel arch is a temporary or permanent structure used to support the tunnel excavation face and surrounding rock. It is typically constructed of steel or concrete and has an arched shape to provide stability and support. The primary function of a tunnel arch is to prevent potential landslides or collapses during tunnel excavation, ensuring the safety of construction workers and the smooth progress of the project. However, because arches typically utilize a segmented structure and space is limited during tunnel excavation, support devices are required for their installation.

[0003] Current tunnel arch support devices can support arches of varying widths by adjusting the support height and lateral distance. However, during tunnel excavation, the ground conditions are often uneven, which can lead to the support device failing to provide stable support. This can easily lead to deviations during arch installation, compromising installation accuracy and construction safety.

[0004] For example, the Chinese patent with authorization announcement CN221032664U discloses a tunnel steel arch support device, including a base, a hollow support column on the top of the base, a threaded rod inside the support column, a support plate on the top of the threaded rod, a limit plate on the top of the support plate, a fixing ring and a driving part on the top of the support column, a mounting groove on the top of the fixing ring, and a plurality of universal ball bearings in the mounting groove.

[0005] Although the tunnel steel arch support device can support arches of different widths by adjusting the support height and the lateral distance, the support device cannot provide stable support when the ground conditions are uneven, and deviations are likely to occur during the installation of the arch, affecting the installation accuracy and construction safety of the arch.

[0006] Currently, no effective solutions have been proposed for the problems in related technologies. Utility Model Content

[0007] In response to the problems in the related art, the present invention proposes a tunnel arch support device to overcome the above technical problems existing in the existing related art.

[0008] To this end, the specific technical solutions adopted in this utility model are as follows:

[0009] A tunnel arch support device includes a mounting plate, a fixed column is provided in the middle of the top of the mounting plate, a sliding column is provided inside the fixed column, the fixed column and the sliding column are connected by a longitudinal adjustment mechanism, a support plate is provided at the top of the sliding column, the top and both ends of one side of the support plate are provided with sliding grooves, the two groups of sliding grooves are connected, and limit members that match the sliding grooves are symmetrically provided on both sides of the top of the support plate; support columns are provided around the bottom end of the mounting plate, fixed rods are provided on both sides of the support columns, and a stabilization adjustment mechanism is provided on the outer side of the fixed rod.

[0010] Material toggling mechanism, its both sides respectively have a cylinder pressure, and the cylinder pressure bar connects swing arm, and the swing arm end face has hook portion, and a bar passes position between the end of two swing arms and the hook portion.

[0011] Furthermore, in order to achieve lateral distance adjustment of the supporting device and flexibly adapt to arches of different widths for lateral clamping, the limiting part includes a sliding block arranged in the sliding groove, and the top and one side of the sliding block are provided with connecting rods passing through the sliding groove, the top of one of the connecting rods is provided with a limiting plate, and the top of the other connecting rod is provided with a fixed ball, and one side of the sliding block is provided with a spring that cooperates with the inner wall of the sliding groove.

[0012] Furthermore, in order to enable the support device to adapt to various uneven surfaces when the ground conditions are uneven, provide stable support, and prevent deviations during the installation of the arch frame, which affects the installation accuracy and construction safety of the arch frame, the stabilization adjustment mechanism includes a support rod mounted on the outside of the fixed rod, an extension rod is arranged inside the support rod, and a locking piece matching the extension rod is provided at the bottom end of the support rod; a limiting ball is provided at the bottom end of the extension rod, a stabilizing column is mounted on the outside of the circumference of the limiting ball, a support pad is provided at the bottom end of the stabilizing column, and fixed cones are symmetrically provided on both sides of the top of the support pad; the feature is that the locking piece includes a fixed frame arranged on the outside of the bottom end of the support rod, a rotating shaft is provided at the top of the fixed frame, and an eccentric block is provided on the outside of the rotating shaft; notches are symmetrically opened at the inner top end of the fixed frame, a spring 2 is arranged inside the notch, a pressure column is provided at the bottom end of the spring 2, a pressure plate matching the extension rod is provided at the bottom end of the pressure column, and a protrusion matching the eccentric block is provided at the middle part of the top end of the pressure plate.

[0013] The beneficial effects of the utility model are:

[0014] 1) With the cooperation of the fixed column, the sliding column, the longitudinal adjustment mechanism, the limiter and the stability adjustment mechanism, the utility model can be adjusted at will according to the shape and characteristics of the ground, adapting to various uneven grounds, improving the adaptability and stability of the support device in different environments, and at the same time being able to adjust the support height and lateral distance to support arches of different widths and heights.

[0015] 2) With the cooperation of fixed columns, sliding columns, longitudinal adjustment mechanisms and limiters, it can flexibly adapt to arches of different heights and widths for support, and can be quickly retracted when recovery is required, thereby improving the operating efficiency and convenience of the device.

[0016] 3) Under the action of the stable adjustment mechanism, it can be adjusted at will according to the shape and characteristics of the ground to adapt to various uneven grounds, thereby improving the adaptability of the support device in different environments and ensuring the stability and safety of the support device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 This is a schematic structural diagram of a tunnel arch support device according to an embodiment of the present utility model;

[0019] Figure 2This is a schematic structural diagram of a stabilizing adjustment mechanism in a tunnel arch support device according to an embodiment of the present utility model;

[0020] Figure 3 It is a cross-sectional schematic diagram of a stabilizing adjustment mechanism in a tunnel arch support device according to an embodiment of the present utility model;

[0021] Figure 4 This is a three-dimensional assembly diagram of a stabilizing adjustment mechanism in a tunnel arch support device according to an embodiment of the present utility model;

[0022] Figure 5 This is a schematic structural diagram of a longitudinal adjustment mechanism in a tunnel arch support device according to an embodiment of the present utility model;

[0023] Figure 6 It is a cross-sectional schematic diagram of a longitudinal adjustment mechanism in a tunnel arch support device according to an embodiment of the present utility model;

[0024] Figure 7 yes Figure 6 Enlarged view of point A in the middle.

[0025] In the picture:

[0026] 1. Mounting plate; 2. Fixed column; 3. Sliding column; 301. Sawtooth groove; 4. Longitudinal adjustment mechanism; 401. Rotating disk; 4011. Vortex spiral plate; 4012. Rotating disk; 4013. Disc; 4014. Annular groove; 4015. Connecting column; 4016. Connecting plate; 4017. Rotating rod; 402. Fixed plate; 4021. Long protrusion; 403. Eccentric wheel; 404. Pull rod; 5. Support plate; 6. Sliding groove; 7. Limiting member; 701. Sliding block; 702. Connecting rod; 703. Limiting member Plate; 704, fixed ball; 705, spring one; 8, support column; 9, fixed rod; 10, stabilizing adjustment mechanism; 1001, support rod; 1002, extension rod; 1003, positioning piece; 10031, fixed frame; 10032, rotating shaft; 10033, eccentric block; 10034, notch; 10035, spring two; 10036, pressure column; 10037, pressure plate; 10038, bump; 1004, limiting ball; 1005, stabilizing column; 1006, support pad; 1007, fixing cone. DETAILED DESCRIPTION

[0027] To further illustrate each embodiment, the present invention provides drawings, which are part of the disclosure of the present invention and are mainly used to illustrate the embodiments. They can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. By referring to these contents, ordinary technicians in this field should be able to understand other possible implementation methods and the advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0028] According to an embodiment of the present utility model, a tunnel arch support device is provided.

[0029] The present invention will now be further described with reference to the accompanying drawings and specific embodiments. Figure 1-Figure 7 As shown, the configuration method according to the embodiment of the present invention includes a mounting plate 1, a fixed column 2 is provided at the middle part of the top of the mounting plate 1, a sliding column 3 is provided inside the fixed column 2, the fixed column 2 and the sliding column 3 are connected by a longitudinal adjustment mechanism 4, a support plate 5 is provided at the top of the sliding column 3, and sliding grooves 6 are provided at the top and both ends of one side of the support plate 5. The two groups of sliding grooves 6 are connected, and limit members 7 that cooperate with the sliding grooves 6 are symmetrically provided on both sides of the top of the support plate 5; support columns 8 are provided around the bottom end of the mounting plate 1, and fixed rods 9 are provided on both sides of the support column 8, and a stabilization adjustment mechanism 10 is provided on the outer side of the fixed rod 9.

[0030] With the help of the above technical scheme, the utility model can be adjusted at will according to the shape and characteristics of the ground under the coordinated action of the fixed column 2, the sliding column 3, the longitudinal adjustment mechanism 4, the limiter 7 and the stabilization adjustment mechanism 10, so as to adapt to various uneven grounds, thereby improving the adaptability and stability of the support device in different environments, and at the same time being able to adjust the support height and lateral distance to support arches of different widths and heights; under the coordinated action of the fixed column 2, the sliding column 3, the longitudinal adjustment mechanism 4 and the limiter 7, it can flexibly adapt to support arches of different heights and widths, and realize rapid retraction when recovery is required, thereby improving the operating efficiency and convenience of the device; under the action of the stabilization adjustment mechanism 10, it can be adjusted at will according to the shape and characteristics of the ground to adapt to various uneven grounds, thereby improving the adaptability of the support device in different environments, and ensuring the stability and safety of the support device.

[0031] In addition, the tunnel arch support device of the present invention can not only support the tunnel arch, but also adapt to the installation of other devices (such as pipe supports) according to different parameters by changing the parameters of the longitudinal adjustment mechanism 4 and the limiter 7, and improve the adaptability of other devices to uneven ground during installation.

[0032] In one embodiment, for the above-mentioned sliding column 3 and longitudinal adjustment mechanism 4, a saw-shaped tooth groove 301 cooperating with the longitudinal adjustment mechanism 4 is opened on one side of the bottom of the sliding column 3; the longitudinal adjustment mechanism 4 includes a rotating disk 401 arranged on one side of the saw-shaped tooth groove 301, and fixed plates 402 cooperating with the fixed column 2 are symmetrically arranged at both ends of one side of the rotating disk 401. The two sets of fixed plates 402 are connected by an eccentric wheel 403, and a pull rod 404 is arranged on the outer side of the circumference of the eccentric wheel 403; the rotating disk 401 includes a vortex spiral plate 4011 arranged on one side of the saw-shaped tooth groove 301, and a rotating disk 4012 is arranged on one side of the vortex spiral plate 4011. The rotating disk 4012 is close to the vortex A disc 4013 is provided in the middle of one side of the vortex spiral plate 4011, and an annular groove 4014 is provided on the outer side of the circumference of the disc 4013, which cooperates with the fixed plate 402; a connecting column 4015 is provided in the middle of the side of the turntable 4012 away from the vortex spiral plate 4011, and a connecting plate 4016 is provided on one side of the connecting column 4015, and a rotating rod 4017 is provided on one side of the connecting plate 4016; a long protrusion 4021 cooperating with the annular groove 4014 is provided on one side of the fixed plate 402, thereby completing the lifting and lowering of the sliding column 3, being able to flexibly adapt to support arch frames of different heights, and realizing rapid contraction when recovery is required, thereby improving the operating efficiency and convenience of the device.

[0033] The working principle of the sliding column 3 and the longitudinal adjustment mechanism 4 is as follows: in the initial state, when the sliding column 3 needs to be raised or lowered, the operator rotates the rotating rod 4017. Under the action of the connecting plate 4016 and the connecting column 4015, the rotating rod 4017 drives the turntable 4012 to rotate during the rotation of the rotating rod 4017. During the rotation of the turntable 4012, the vortex spiral plate 4011 is driven to rotate. Under the action of the sawtooth groove 301, the vortex spiral plate 4011 drives the sliding column 3 to reciprocate up and down during the rotation. After the support arch is completed, the support device needs to be recovered. The operator pulls up the pull rod 404, the eccentric wheel 403 rotates, drives the fixed plate 402 to move, and no longer presses against the fixed column 2. The annular groove 4014 and the long protrusion 4021 Under the action of , the disc 4013 is driven to move during the movement of the fixed plate 402, and the movement of the disc 4013 drives the rotating disk 4012 to move, and the movement of the rotating disk 4012 drives the vortex spiral plate 4011 to move, and no longer fits the sawtooth groove 301, so that the sliding column 3 can be quickly lowered for recovery. When the sliding column 3 needs to be lifted or lowered, the operator resets the pull rod 404, and the eccentric wheel 403 rotates to drive the fixed plate 402 to move, against the fixed column 2, and during the movement of the fixed plate 402, it drives the disc 4013 to move, drives the rotating disk 4012 to move, and drives the vortex spiral plate 4011 to move to fit the sawtooth groove 301, so that the sawtooth groove 301 and the vortex spiral plate 4011 can cooperate to realize the lifting and lowering of the sliding column 3.

[0034] In one embodiment, for the above-mentioned limit member 7, the limit member 7 includes a sliding block 701 arranged in the sliding groove 6, and the top and one side of the sliding block 701 are both provided with connecting rods 702 passing through the sliding groove 6, wherein the top of one connecting rod 702 is provided with a limiting plate 703, and the top of the other connecting rod 702 is provided with a fixed ball 704, and one side of the sliding block 701 is provided with a spring 705 that cooperates with the inner wall of the sliding groove 6, thereby realizing the lateral distance adjustment of the support device, and can flexibly adapt to arch frames of different widths for lateral clamping.

[0035] The working principle of the limiter 7 is as follows: in the initial state, when the sliding column 3 is adjusted to an appropriate distance to support the arch frame, the operator moves the fixed ball 704 to a distance outside the width of the arch frame. Under the action of the connecting rod 702, the fixed ball 704 drives the sliding block 701 to move during the movement. Under the action of the connecting rod 702, the movement of the sliding block 701 drives the limit plate 703 to move. Under the action of spring 1 705, the limit plate 703 moves steadily, and then the pressure of moving the fixed ball 704 is released. Under the reset action of spring 1 705, the limit plate 703 will automatically reset and move. When the limit plate 703 contacts the arch frame, it will stop moving, thereby achieving horizontal clamping of the arch frame.

[0036] In one embodiment, for the above-mentioned stable adjustment mechanism 10, the stable adjustment mechanism 10 includes a support rod 1001 sleeved on the outside of the fixed rod 9, an extension rod 1002 is arranged inside the support rod 1001, and a locking piece 1003 that cooperates with the extension rod 1002 is provided at the bottom end of the support rod 1001; a limiting ball 1004 is provided at the bottom end of the extension rod 1002, and a stabilizing column 1005 is sleeved on the outer circumference of the limiting ball 1004, and a supporting pad 1006 is provided at the bottom end of the stabilizing column 1005, and a fixing cone 1007 is symmetrically provided on both sides of the top of the supporting pad 1006; the characteristic is that the locking piece 1003 includes a fixing frame 10031 arranged on the outside of the bottom end of the support rod 1001, and the fixing frame 10031 is provided with a fixing frame 10031. A rotating shaft 10032 is provided at the top, and an eccentric block 10033 is provided on the outside of the rotating shaft 10032; a slot 10034 is symmetrically provided at the inner top of the fixed frame 10031, a spring 2 10035 is provided inside the slot 10034, a pressure column 10036 is provided at the bottom end of the spring 2 10035, a pressure plate 10037 is provided at the bottom end of the pressure column 10036 for matching with the extension rod 1002, and a protrusion 10038 for matching with the eccentric block 10033 is provided at the middle part of the top end of the pressure plate 10037, so that when the ground conditions are uneven, the support device can adapt to various uneven surfaces, provide stable support, and prevent deviations during the installation of the arch frame, which affects the installation accuracy of the arch frame and construction safety.

[0037] The working principle of the stabilization adjustment mechanism 10 is as follows: by adjusting the locking piece 1003, the four extension rods 1002 extend and contract to the four sides. Under the action of the support rod 1001, the extension rod 1002 stably extends and contracts to the four sides. In the process of the extension rod 1002 extending and contracting to the four sides, it drives the support pad 1006 to extend and contract to the four sides. When the support pad 1006 contacts the mounting surface, under the action of the limiting ball 1004 and the stabilizing column 1005, a support angle is formed between the support pad 1006 and the extension rod 1002. At the same time, the fixing cone 1007 can be extended into the ground, so that the supporting device as a whole is firmly placed on the ground.

[0038] The principle of the locking member 1003 is as follows: in the initial state, the operator pushes the eccentric block 10033 downwards, and under the action of the rotating shaft 10032, the eccentric block 10033 rotates steadily clockwise. During the clockwise rotation of the eccentric block 10033, the contact area between the eccentric block and the protrusion 10038 increases. During this process, the eccentric block 10033 squeezes the protrusion 10038 downwards, and under the action of the spring 2 10035, the protrusion 10038 is squeezed downwards and drives the locking member 10033 to rotate clockwise. The pressure plate 10037 is squeezed downward, and the pressure plate 10037 is pressed against the side of the extension rod 1002 and fixed. When the fixed position needs to be changed, the eccentric block 10033 is pushed upward, and the contact area between the eccentric block 10033 and the protrusion 10038 is reduced. Under the action of the elastic force of the spring 2 10035, the protrusion 10038 moves upward. In the process of the protrusion 10038 moving upward, it drives the pressure plate 10037 to move upward away from the extension rod 1002. At this time, the extension rod 1002 can be freely extended and retracted.

[0039] In order to facilitate understanding of the above technical solutions of the present invention, the working principle or operation method of the present invention in actual process is described in detail below.

[0040] In actual application, in the initial state, the operator adjusts the position of the support rod 1001, the extension rod 1002 and the support pad 1006 according to the position of the arch frame, and under the action of the locking member 1003, the support device adapts to different environments and is fixed (the specific working principle of the stable adjustment mechanism 10 is as described above), and then rotates the rotating rod 4017 according to the height of the arch frame, and adjusts the height of the sliding column 3 under the action of the sawtooth groove 301 and the vortex spiral plate 4011 (the specific working principle of the sliding column 3 and the longitudinal adjustment mechanism 4 is as described above), and then moves the fixed ball 704 according to the width of the arch frame, and under the action of the spring 1 705, completes the horizontal clamping support of the arch frame (the specific working principle of the limit member 7 is as described above), and when the support completes the recovery device, the eccentric wheel 403 is adjusted by the pull rod 404, so that the sliding column 3 can be quickly lowered and recovered (the specific working principle of the sliding column 3 and the longitudinal adjustment mechanism 4 is as described above).

[0041] To sum up, with the help of the above-mentioned technical scheme of the present invention, the present invention can be adjusted at will according to the shape and characteristics of the ground under the cooperation of the fixed column 2, the sliding column 3, the longitudinal adjustment mechanism 4, the limiter 7 and the stability adjustment mechanism 10, so as to adapt to various uneven grounds, improve the adaptability and stability of the support device in different environments, and at the same time can adjust the support height and lateral distance to support arches of different widths and heights; under the cooperation of the fixed column 2, the sliding column 3, the longitudinal adjustment mechanism 4 and the limiter 7, it can flexibly adapt to support arches of different heights and widths, and realize rapid retraction when recovery is required, thereby improving the operating efficiency and convenience of the device; under the action of the stability adjustment mechanism 10, it can be adjusted at will according to the shape and characteristics of the ground to adapt to various uneven grounds, thereby improving the adaptability of the support device in different environments and ensuring the stability and safety of the support device.

[0042] In the present invention, unless otherwise clearly stipulated and limited, the terms "install", "set", "connect", "fix", "screw" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the present invention according to the specific circumstances.

[0043] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A tunnel arch support device, comprising a mounting plate (1), characterized in that: A fixed column (2) is provided at the middle of the top of the mounting plate (1), a sliding column (3) is provided inside the fixed column (2), the fixed column (2) and the sliding column (3) are connected via a longitudinal adjustment mechanism (4), a supporting plate (5) is provided at the top of the sliding column (3), a sliding groove (6) is provided at the top and both ends of one side of the supporting plate (5), two groups of the sliding grooves (6) are connected, and limiting members (7) that match the sliding grooves (6) are symmetrically provided on both sides of the top of the supporting plate (5); Support columns (8) are arranged around the bottom end of the mounting plate (1), fixing rods (9) are arranged on both sides of the support columns (8), and a stabilizing adjustment mechanism (10) is sleeved on the outer side of the fixing rods (9).

2. A tunnel arch support device according to claim 1, characterized in that: A saw-shaped tooth groove (301) is provided on one side of the bottom of the sliding column (3) and matches the longitudinal adjustment mechanism (4).

3. A tunnel arch support device according to claim 2, characterized in that: The longitudinal adjustment mechanism (4) includes a rotating disk (401) arranged on one side of the saw-shaped tooth groove (301), and fixed plates (402) that cooperate with the fixed column (2) are symmetrically arranged at both ends of one side of the rotating disk (401). The two groups of fixed plates (402) are connected through an eccentric wheel (403), and a pull rod (404) is arranged on the outer side of the circumference of the eccentric wheel (403).

4. The tunnel arch support device according to claim 3, characterized in that: The rotating disk (401) comprises a vortex spiral plate (4011) arranged on one side of the saw-shaped tooth groove (301), a rotating disk (4012) is arranged on one side of the vortex spiral plate (4011), a circular disk (4013) is arranged in the middle of one side of the rotating disk (4012) close to the vortex spiral plate (4011), and an annular groove (4014) is provided on the outer circumference of the circular disk (4013) to cooperate with the fixed plate (402); A connecting column (4015) is provided in the middle of one side of the turntable (4012) away from the vortex spiral plate (4011), a connecting plate (4016) is provided on one side of the connecting column (4015), and a rotating rod (4017) is provided on one side of the connecting plate (4016).

5. The tunnel arch support device according to claim 4, characterized in that: A long protrusion (4021) that matches the annular groove (4014) is provided on one side of the fixing plate (402).

6. The tunnel arch support device according to claim 1, characterized in that: The limiting member (7) includes a sliding block (701) arranged in the sliding groove (6), and a connecting rod (702) is provided at the top and one side of the sliding block (701) passing through the sliding groove (6), wherein a limiting plate (703) is provided at the top of one of the connecting rods (702), and a fixed ball (704) is provided at the top of the other connecting rod (702), and a spring (705) is provided on one side of the sliding block (701) to cooperate with the inner wall of the sliding groove (6).

7. The tunnel arch support device according to claim 1, characterized in that: The stabilizing and adjusting mechanism (10) comprises a support rod (1001) sleeved on the outside of the fixing rod (9), an extension rod (1002) is arranged inside the support rod (1001), and a locking member (1003) is provided at the bottom end of the support rod (1001) and matched with the extension rod (1002); A limiting ball (1004) is provided at the bottom end of the extension rod (1002), a stabilizing column (1005) is sleeved on the outer circumference of the limiting ball (1004), a supporting pad (1006) is provided at the bottom end of the stabilizing column (1005), and fixing cones (1007) are symmetrically provided on both sides of the top of the supporting pad (1006).

8. The tunnel arch support device according to claim 7, characterized in that: The feature is that the locking member (1003) comprises a fixed frame (10031) arranged on the outside of the bottom end of the support rod (1001), a rotating shaft (10032) is arranged on the top end of the fixed frame (10031), and an eccentric block (10033) is arranged on the outside of the rotating shaft (10032); The inner top of the fixed frame (10031) is symmetrically provided with a notch (10034), a spring 2 (10035) is arranged inside the notch (10034), a pressure column (10036) is arranged at the bottom end of the spring 2 (10035), a pressure plate (10037) that cooperates with the extension rod (1002) is arranged at the bottom end of the pressure column (10036), and a protrusion (10038) that cooperates with the eccentric block (10033) is arranged at the middle of the top of the pressure plate (10037).

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