A height-adjustable support frame for tunnel construction

Abstract

The present application relates to the field of tunnel construction equipment, and specifically discloses a height-adjustable support frame for tunnel construction, which includes a base, a column, an adjustment assembly, a drive assembly, a shell and a top plate, wherein the column is arranged on the base, the column includes a first support portion and a second support portion, the adjustment assembly is rotatably connected with the first support portion and the second support portion, the drive assembly is used to drive the adjustment assembly to move so as to move the second support portion, the shell is vertically arranged on the base, the shell is provided with a groove, the groove is used to accommodate the column, and the top plate is remotely connected with the second support portion to abut against the tunnel wall. The present application has the effect of improving the problem that the existing support frame has low adaptability to the construction height of different tunnels.

Description

Technical Field

[0001] The present application relates to the field of tunnel construction equipment, and in particular to a height-adjustable support frame for tunnel construction. Background Art

[0002] In the field of tunnel engineering, construction safety and engineering quality are crucial considerations. During tunnel construction, due to the complexity of geological conditions and the uncertainty of the construction environment, excavation operations often disturb the surrounding rock and soil, leading to increased stratum pressure and groundwater pressure, which may cause instability or even collapse of the tunnel wall. Therefore, the use of support frames as temporary support structures plays an irreplaceable role in stabilizing the excavation surface and preventing tunnel wall collapse. Support frames can effectively withstand and disperse stratum pressure, groundwater pressure and other pressures generated by construction activities, provide a safe working environment for construction personnel, and ensure the smooth progress of construction.

[0003] However, it is difficult to adjust the height of the existing support frame for tunnel construction after it is fixed and installed, so that the support frame has low adaptability to the construction heights of different tunnels. Utility Model Content

[0004] In order to improve the problem that the existing support frame has low adaptability to the construction heights of different tunnels, the present application provides a height-adjustable support frame for tunnel construction.

[0005] The application provides a height-adjustable support frame for tunnel construction using the following technical solution:

[0006] A height-adjustable support frame for tunnel construction, comprising:

[0007] Pedestal;

[0008] A column, arranged on the base, comprising a first supporting portion and a second supporting portion;

[0009] The adjustment assembly includes a first connecting rod and a second connecting rod, wherein one end of the first connecting rod is rotatably connected to the first supporting portion, one end of the second connecting rod is rotatably connected to an end of the first connecting rod away from the first supporting portion, and one end of the second connecting rod away from the first connecting rod is rotatably connected to the second supporting portion;

[0010] A driving assembly, comprising a first driving member and a second driving member, wherein a fixed end of the first driving member is hinged to the first supporting portion, a movable end of the first driving member is hinged to the first connecting rod, a fixed end of the second driving member is hinged to the first connecting rod, and a movable end of the second driving member is hinged to the second connecting rod;

[0011] A shell is vertically arranged on the base and is provided with a groove, wherein the groove of the shell (5) is used to accommodate the column;

[0012] A top plate is connected to an end of the second supporting portion away from the second connecting rod.

[0013] By adopting the above technical solution, the operating personnel can limit the height-adjustable support frame for tunnel construction through the base, and drive the adjustment component to move through the driving component, so that the first connecting rod and the second connecting rod rotate relative to the first support part and the second support part of the column, thereby increasing the total height of the height-adjustable support frame for tunnel construction, so that the top plate can adapt to different tunnel construction heights and contact with the tunnel wall, thereby improving the problem of low adaptability of the existing support frame to different tunnel construction heights.

[0014] Preferably, it also includes a limit assembly, which includes a first limit block and a second limit block, the first limit block and the second limit block are arranged opposite to each other, the first limit block is arranged in the groove of the shell, and the second limit block is arranged on one side of the second support part, and the first limit block and the second limit block are used in matching manner.

[0015] By adopting the above technical solution, the first limit block and the second limit block of the limit assembly can limit the movement of the column relative to the outer shell, thereby improving the safety and reliability of the height-adjustable support frame for tunnel construction under different usage conditions. At the same time, it is convenient for operators to observe and operate, making the height adjustment of the support frame more intuitive and reducing the workload of operators.

[0016] Preferably, the first limit block is provided with a slope and a plane, the slope of the first limit block is located at the lower part of the first limit block, the thickness of the upper part of the first limit block is greater than the thickness of the lower part of the first limit block, and the plane of the first limit block is located at the upper part of the first limit block.

[0017] By adopting the above technical solution, the setting of the slope enables the first limit block to provide continuous support to the second limit block without hindering the movement of the second limit block during the raising process of the height-adjustable support frame for tunnel construction; the setting of the plane enables the first limit block to provide stable support for the second limit block after the second limit block moves and exceeds the first limit block, thereby avoiding the reverse movement of the second limit block when bearing load, thereby ensuring the stability of the height-adjustable support frame for tunnel construction during operation.

[0018] Preferably, a plurality of the first limit blocks are provided, and the plurality of the first limit blocks are distributed at the bottom of the groove of the outer shell (5) along the length direction of the outer shell, and the plurality of the first limit blocks are located at the upper part of the outer shell.

[0019] By adopting the above technical solution, several first limit blocks can provide multi-point support for the columns, enhance the stability of the height-adjustable support frame for tunnel construction, and thus enable the height-adjustable support frame for tunnel construction to withstand a larger load.

[0020] Preferably, the second limit block is provided with a slope and a plane, the slope of the second limit block is located at the upper part of the second limit block, the thickness of the upper part of the second limit block is less than the thickness of the lower part of the second limit block, and the plane of the second limit block is located at the lower part of the second limit block.

[0021] By adopting the above technical solution, the setting of the slope makes it possible for the slope of the second limit block to fit with the slope of the first limit block during the process of raising the height-adjustable support frame for tunnel construction, so that the second limit block can move smoothly relative to the first limit block, reducing the impact and vibration when the height-adjustable support frame for tunnel construction is raised; the setting of the plane makes it possible for the plane of the second limit block to fit with the plane of the first limit block after the second limit block moves and exceeds the first limit block, thereby limiting the movement of the second limit block and avoiding the second limit block from moving in the opposite direction when bearing load, thereby ensuring the stability of the height-adjustable support frame for tunnel construction during operation.

[0022] Preferably, a plurality of the second limit blocks are provided, and the plurality of the second limit blocks are provided on one side of the second support portion along the length direction of the column, and the plurality of the second limit blocks are located at the lower part of the second support portion.

[0023] By adopting the above technical solution, several second limit blocks can be connected to the corresponding first limit blocks, thereby limiting the position of the column, preventing the second support part from moving due to excessive load, enhancing the stability of the height-adjustable support frame for tunnel construction, and enabling the height-adjustable support frame for tunnel construction to withstand a larger load.

[0024] Preferably, the top plate is bent, and a side of the top plate close to the base is connected to a top beam via a plurality of metal columns.

[0025] By adopting the above technical solution, when the top plate is subjected to the pressure from the upper soil layer and the load of the construction equipment, the metal columns and top beams provide the top plate with necessary shear support, thereby preventing the top plate from shear deformation or damage, and ensuring the working stability of the height-adjustable support frame for tunnel construction.

[0026] Preferably, the base is provided with a plurality of through holes.

[0027] By adopting the above technical solution, the presence of the through hole makes the installation of the base more convenient, and the operator can easily fix the base to the ground or the tunnel wall by bolts, anchor rods or other fasteners, so that the height-adjustable support frame for tunnel construction can be quickly fixed and installed.

[0028] In summary, the present application includes at least one of the following beneficial technical effects:

[0029] 1. The operator can limit the height-adjustable support frame for tunnel construction through the base, and drive the adjustment assembly to move through the driving assembly, so that the first connecting rod and the second connecting rod rotate relative to the first supporting part and the second supporting part of the column, thereby increasing the total height of the height-adjustable support frame for tunnel construction, so that the top plate can adapt to different tunnel construction heights and contact with the tunnel wall, thereby improving the problem that the existing support frame has low adaptability to the construction heights of different tunnels;

[0030] 2. The first limit block and the second limit block of the limit assembly can limit the movement of the column relative to the housing, thereby improving the safety and reliability of the height-adjustable support frame for tunnel construction under different use conditions, while facilitating observation and operation by operators, making the height adjustment of the support frame more intuitive and reducing the workload of operators;

[0031] 3. The setting of the slope surface enables the first limit block to provide continuous support to the second limit block without hindering the movement of the second limit block during the raising process of the height-adjustable support frame for tunnel construction; the setting of the plane enables the first limit block to provide stable support for the second limit block after the second limit block moves and exceeds the first limit block, thereby avoiding the reverse movement of the second limit block when bearing load, thereby ensuring the stability of the height-adjustable support frame for tunnel construction during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is one of the structural schematic diagrams of a height-adjustable support frame for tunnel construction in an embodiment of the present application;

[0033] Figure 2 It is one of the partial structural schematic diagrams of the height-adjustable support frame for tunnel construction in the embodiment of the present application;

[0034] Figure 3 is a schematic diagram of the cross-sectional structure of the housing in the embodiment of the present application;

[0035] Figure 4 This is the second structural schematic diagram of the height-adjustable support frame for tunnel construction in the embodiment of the present application;

[0036] Figure 5 This is the second partial structural schematic diagram of the height-adjustable support frame for tunnel construction in the embodiment of the present application.

[0037] Explanation of the accompanying drawings: 1. base; 2. column; 21. first support part; 22. second support part; 3. adjustment assembly; 31. first connecting rod; 32. second connecting rod; 4. driving assembly; 41. first driving member; 42. second driving member; 5. outer shell; 6. top plate; 7. limit assembly; 71. first limit block; 72. second limit block; 8. top beam. DETAILED DESCRIPTION

[0038] The following is combined with Figure 1-5 This application is described in further detail.

[0039] During tunnel construction, the required construction height of the support frame is not fixed. For example, different stages of tunnel construction may require support of different heights, such as initial support, secondary lining, etc., to meet the construction needs of different stages; or different construction methods (such as drilling and blasting, shield method, etc.) may require support frames of different heights to adapt to construction equipment and process flow.

[0040] In addition, the existing tunnel construction support frame is designed to be raised and fixed by hydraulic rods and other linear motion devices. Although this design is easy to operate, it also has some potential safety hazards. When the support frame is under a large load, if the hydraulic rod or similar linear drive structure loses pressure or power, it may cause the support frame to lose its normal support force, and then slide down or even collapse, which poses certain safety hazards.

[0041] The present application embodiment discloses a height-adjustable support frame for tunnel construction (hereinafter referred to as the support frame). Figure 1 The support frame includes a base 1, a column 2, an adjustment component 3, a driving component 4, a shell 5, a top plate 6 and a limit component 7.

[0042] like Figure 1 As shown, the base 1 is specifically a metal block with a plurality of through holes, and the operator can easily fix the base 1 to the ground or the tunnel wall by bolts, anchor rods or other fasteners, so that the support frame can be quickly fixed and installed.

[0043] refer to Figure 2 and Figure 3 The shell 5 is vertically arranged on the side of the base 1 away from the ground. The shell 5 is provided with a groove. The column 2 is vertically arranged in the groove and connected to the base 1. The column 2 is divided into a first support part 21 and a second support part 22. An adjustment component 3 is arranged between the first support part 21 and the second support part 22.

[0044] In the embodiment of the present application, the adjustment assembly 3 includes a first connecting rod 31 and a second connecting rod 32, both of which are metal rods of the same specifications, one end of the first connecting rod 31 is hinged to the first support portion 21, one end of the second connecting rod 32 is hinged to an end of the first connecting rod 31 away from the first support portion 21, and an end of the second connecting rod 32 away from the first connecting rod 31 is hinged to the second support portion 22.

[0045] The driving assembly 4 is connected to the first connecting rod 31 and the second connecting rod 32 to drive the first connecting rod 31 to rotate relative to the first supporting portion 21 and drive the second connecting rod 32 to rotate relative to the first connecting rod 31; the driving assembly 4 includes a first driving member 41 and a second driving member 42, the fixed end of the first driving member 41 is hinged to the first supporting portion 21, the movable end of the first driving member 41 is hinged to the first connecting rod 31, the fixed end of the second driving member 42 is hinged to the first connecting rod 31, and the movable end of the second driving member 42 is hinged to the second connecting rod 32.

[0046] It should be noted that the first driving member 41 and the second driving member 42 need to be set according to actual working requirements, and can be any device or structure that can drive the first connecting rod 31 to rotate relative to the first support part 21 and drive the second connecting rod 32 to rotate relative to the first connecting rod 31, including but not limited to electric telescopic rods, hydraulic telescopic rods or cylinders and other devices or structures, and this application does not make specific restrictions; in the embodiment of the present application, the first driving member 41 and the second driving member 42 are specifically hydraulic telescopic rods.

[0047] like Figure 4 and Figure 5 As shown, the limiting assembly 7 includes a first limiting block 71 and a second limiting block 72, the first limiting block 71 and the second limiting block 72 are arranged opposite to each other, and a plurality of first limiting blocks 71 are provided, and a plurality of first limiting blocks 71 are distributed at the bottom of the groove along the length direction of the shell 5, and a plurality of first limiting blocks 71 are located at the upper part of the shell 5; the second limiting block 72 is arranged on one side of the second supporting portion 22, and a plurality of second limiting blocks 72 are provided, and a plurality of second limiting blocks 72 are arranged at one side of the second supporting portion 22 along the length direction of the column 2, and a plurality of second limiting blocks 72 are located at the lower part of the second supporting portion 22. The first limiting block 71 and the second limiting block 72 of the limiting assembly 7 can limit the movement of the column 2 relative to the shell 5, thereby improving the safety and reliability of the support frame in different use states, and at the same time facilitating observation and operation by operators, making the height adjustment of the support frame more intuitive, and reducing the workload of operators.

[0048] Specifically, several first limit blocks 71 and several second limit blocks 72 are all metal blocks. Several first limit blocks 71 can provide multi-point support for the column 2, enhance the stability of the support frame, so that the support frame can withstand a larger load; several second limit blocks 72 can be connected to the corresponding first limit blocks 71, so as to limit the position of the column 2, prevent the second support part 22 from moving due to excessive load, enhance the stability of the support frame, so that the support frame can withstand a larger load.

[0049] The first limit block 71 is provided with a slope and a plane, the slope of the first limit block 71 is located at the lower part of the first limit block 71, the thickness of the upper part of the first limit block 71 is greater than the thickness of the lower part of the first limit block 71, and the plane of the first limit block 71 is located at the upper part of the first limit block 71; the second limit block 72 is provided with a slope and a plane, the slope of the second limit block 72 is located at the upper part of the second limit block 72, the thickness of the upper part of the second limit block 72 is less than the thickness of the lower part of the second limit block 72, and the plane of the second limit block 72 is located at the lower part of the second limit block 72.

[0050] The setting of the slope enables the first limit block 71 to provide continuous support to the second limit block 72 without hindering the movement of the second limit block 72 during the raising process of the support frame; the setting of the plane enables the first limit block 71 to provide stable support for the second limit block 72 after the second limit block 72 moves and exceeds the first limit block 71, thereby preventing the second limit block 72 from moving in the opposite direction when bearing load, thereby ensuring the stability of the support frame during operation.

[0051] In addition, during the process of raising the support frame, the slope of the second limit block 72 is in contact with the slope of the first limit block 71, so that the second limit block 72 can move smoothly relative to the first limit block 71, reducing the impact and vibration when the support frame is raised; the setting of the plane makes it possible for the plane of the second limit block 72 to be in contact with the plane of the first limit block 71 after the second limit block 72 moves and exceeds the first limit block 71, thereby limiting the movement of the second limit block 72 and avoiding the second limit block 72 from moving in the opposite direction when bearing load, thereby ensuring the stability of the support frame during operation.

[0052] It should be noted that in the embodiment of the present application, two of each of the base 1, the column 2, the adjustment assembly 3, the drive assembly 4 and the housing 5 are provided, so as to provide balanced support for the top plate 6; one end of the top plate 6 is rotatably connected to the end of the second support portion 22 of one of the columns 2 away from its first support portion 21, and the other end of the top plate 6 is rotatably connected to the end of the second support portion 22 of another column 2 away from its first support portion 21; the side of the top plate 6 close to the base 1 is connected to the top beam 8 through a plurality of metal columns. When the top plate 6 is subjected to the pressure from the upper soil layer and the load of the construction equipment, the metal columns and the top beam 8 provide the top plate 6 with necessary shear support, thereby preventing the top plate 6 from shear deformation or damage, thereby ensuring the working stability of the height-adjustable support frame for tunnel construction.

[0053] The implementation principle of a height-adjustable support frame for tunnel construction in the embodiment of the present application is as follows: an operator fixes the base 1 on the ground through a plurality of through holes, and extends the first driving member 41 and the second driving member 42 of the driving assembly 4, thereby driving the first connecting rod 31 and the second connecting rod 32 of the adjusting assembly 3 to move, and then driving the second supporting portion 22 to move in a direction away from the first supporting portion 21, and finally raising the top plate 6 and making the top plate 6 abut against the tunnel wall, thereby improving the problem that the existing support frame has low adaptability to the construction heights of different tunnels; in the process of the second supporting portion 22 moving in a direction away from the first supporting portion 21, the second limiting block 72 makes relative movement with the corresponding first limiting block 71 through its own slope surface and the slope surface of the corresponding first limiting block 71, and the second limiting block 72 slides on the first limiting block 71 for short; when the second supporting portion 22 completes the movement in the direction away from the first supporting portion 21, the plane of the second limiting block 72 abuts against the plane of the first limiting block 71, thereby limiting the position of the second supporting portion 22.

[0054] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A height-adjustable support frame for tunnel construction, characterized in that: include: Base (1); A column (2) is arranged on the base (1), comprising a first supporting portion (21) and a second supporting portion (22); An adjustment assembly (3) comprises a first connecting rod (31) and a second connecting rod (32), wherein one end of the first connecting rod (31) is rotatably connected to the first supporting portion (21), one end of the second connecting rod (32) is rotatably connected to an end of the first connecting rod (31) away from the first supporting portion (21), and one end of the second connecting rod (32) away from the first connecting rod (31) is rotatably connected to the second supporting portion (22); A driving assembly (4), comprising a first driving member (41) and a second driving member (42), wherein a fixed end of the first driving member (41) is hinged to the first supporting portion (21), a movable end of the first driving member (41) is hinged to the first connecting rod (31), a fixed end of the second driving member (42) is hinged to the first connecting rod (31), and a movable end of the second driving member (42) is hinged to the second connecting rod (32); A shell (5) is vertically arranged on the base (1) and is provided with a groove, wherein the groove of the shell (5) is used to accommodate the column (2); A top plate (6) is connected to an end of the second supporting portion (22) away from the second connecting rod (32).

2. The height-adjustable support frame for tunnel construction according to claim 1, characterized in that: The invention also comprises a limiting assembly (7), wherein the limiting assembly (7) comprises a first limiting block (71) and a second limiting block (72), wherein the first limiting block (71) and the second limiting block (72) are arranged opposite to each other, wherein the first limiting block (71) is arranged in a groove of the housing (5), and the second limiting block (72) is arranged on one side of the second supporting portion (22), and the first limiting block (71) and the second limiting block (72) are matched for use.

3. The height-adjustable support frame for tunnel construction according to claim 2, characterized in that: The first limit block (71) is provided with a slope and a plane, the slope of the first limit block (71) is located at the lower part of the first limit block (71), the thickness of the upper part of the first limit block (71) is greater than the thickness of the lower part of the first limit block (71), and the plane of the first limit block (71) is located at the upper part of the first limit block (71).

4. The height-adjustable support frame for tunnel construction according to claim 3 is characterized in that: A plurality of the first limit blocks (71) are provided, and the plurality of the first limit blocks (71) are distributed at the bottom of the groove of the outer shell (5) along the length direction of the outer shell (5), and the plurality of the first limit blocks (71) are located at the upper part of the outer shell (5).

5. The height-adjustable support frame for tunnel construction according to claim 2, characterized in that: The second limit block (72) is provided with a slope surface and a plane surface, the slope surface of the second limit block (72) is located at the upper part of the second limit block (72), the thickness of the upper part of the second limit block (72) is smaller than the thickness of the lower part of the second limit block (72), and the plane surface of the second limit block (72) is located at the lower part of the second limit block (72).

6. The height-adjustable support frame for tunnel construction according to claim 5, characterized in that: A plurality of the second limit blocks (72) are provided, and the plurality of the second limit blocks (72) are provided on one side of the second support portion (22) along the length direction of the column (2), and the plurality of the second limit blocks (72) are located at the bottom of the second support portion (22).

7. The height-adjustable support frame for tunnel construction according to claim 1, characterized in that: The top plate (6) is bent, and a surface of the top plate (6) close to the base (1) is connected to a top beam (8) via a plurality of metal columns.

8. The height-adjustable support frame for tunnel construction according to claim 1, characterized in that: The base (1) is provided with a plurality of through holes.

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