Adjustable temporary supporting frame

Abstract

The invention discloses an adjustable temporary supporting frame, and relates to the technical field of vertical shaft supporting. According to the adjustable temporary supporting frame, only one end of a steel frame is provided with a steel plate and a steel block, and the other end of the steel frame is provided with a mounting circular groove; the end with the steel plate and the steel block is spliced with the end, without the steel plate and the steel block, of the other steel frame, and the angle of the steel frame can be adjusted by randomly changing the angle of the steel block in the mounting circular groove so that the steel frame can be attached to the inner wall of the vertical shaft. The multiple limiting columns move upwards to the two sides of the steel plate to fix the position of the steel plate, so that the angle of the steel plate is not automatically changed after being adjusted, the multiple steel frames are installed on the inner wall of the vertical shaft in a spliced mode and attached to the inner wall of the vertical shaft, and the steel structure performance of the steel frames can temporarily support the inner wall of the vertical shaft; compared with an existing adjustable temporary supporting frame, the adjustable temporary supporting frame has the advantage that the angle of the I-shaped steel frame can be adjusted in a self-adaptive mode according to the radian of the inner wall of the vertical shaft.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of shaft support, in particular to an adjustable temporary support frame. BACKGROUND

[0002] With the increasing degree of urban population agglomeration and the scale of business and industry, the use of underground power tunnel for power transmission has become a general trend. The main methods of power tunnel construction currently include open excavation method (cover excavation method), pipe jacking method, small shield method, and shallow burying and excavating method. Considering the influence of factors such as the depth of the tunnel and the surrounding environmental conditions, the shallow burying and excavating method is generally used in areas with high underground water level (such as using dewatering auxiliary measures, or using in areas below the underground water level). This method uses the way of vertical shaft into the hole + deep hole grouting + composite support of hidden hole for construction. The power tunnel uses the hidden excavation method to stabilize the soil in front by deep hole grouting and small pipe advanced grouting support, and to change the soil structure by grouting and form temporary support with the grouting pipe and arch support project. This kind of support method can allow part of the deformation of the surrounding rock, so as to eliminate part of the stress of the soil.

[0003] In the construction of the vertical shaft, a I-shaped steel frame is installed on the inner wall of the vertical shaft. If the circumference of the vertical shaft is large, multiple I-shaped steel frames are spliced and installed. When multiple steel frames are spliced, the two ends are connected by welding, and a protective net is welded and installed between the upper I-shaped steel frame and the lower I-shaped steel frame to prevent stones, soil blocks and other impurities from falling off the inner wall of the vertical shaft. This method has the advantages of good support effect and high safety. When supporting the vertical shaft, the I-shaped steel frame is forcibly attached to the inner wall of the vertical shaft by its strong deformability, so as to fix the I-shaped steel frame on the inner wall of the vertical shaft. The end of the I-shaped steel frame is connected by welding, but the I-shaped steel frame cannot be self-adaptively adjusted in angle according to the curvature of the inner wall of the vertical shaft. The I-shaped steel frame has strong anti-deformation performance, which makes it very difficult to install the I-shaped steel frame on the inner wall of the vertical shaft.

[0004] In summary, the prior art is difficult to self-adaptively adjust the angle of the I-shaped steel frame according to the curvature of the inner wall of the vertical shaft. Therefore, the present application innovatively designs an adjustable temporary support frame. SUMMARY

[0005] The technical solution of the present application provides a significantly different solution from the prior art to solve the technical problem that the prior art solution is too single. Specifically, the purpose of the present application is to provide an adjustable temporary support frame to solve the problem that it is difficult to self-adaptively adjust the angle of the I-shaped steel frame according to the curvature of the inner wall of the vertical shaft.

[0006] In order to achieve the above object, the application provides the following technical scheme: an adjustable temporary support frame, comprising a steel frame, an installation channel arranged on the top of the steel frame, and an adjusting channel arranged in the steel frame, further comprising a threaded column screw-mounted in the steel frame, a bearing plate mounted on the outer wall of the threaded column for self-adapting adjustment of the installation angle of the steel frame according to the curvature of the inner wall of the shaft, and a fixing component for fixing and installing the protective net. The fixing component comprises mirror-imaged clamping plates for adjusting and fixing the steel frame and synchronously installing the protective net. The inner part of the bearing plate is slidingly mounted with a limiting column for fixing after adjustment of the steel frame.

[0007] Preferably, one end of the steel frame is fixedly mounted with a steel plate, and one end of the steel plate is fixedly connected with a steel block.

[0008] Preferably, the top of the steel frame is provided with an installation circular groove, and the diameter of the outer wall of the steel block is the same as the diameter of the inner wall of the installation circular groove. The steel block is in a "circular ring" structure, and the diameter of the inner wall of the steel block is greater than the diameter of the threaded column.

[0009] Preferably, the outer wall of the threaded column is rotatably sleeved with a lifting plate. The bearing plate is in an arc structure, and one end of the lifting plate is fixedly connected with the inner wall of the bearing plate. The bottom of the bearing plate is fixedly connected with a mounting column, the inner part of the mounting column is fixedly connected with a spring, and the top of the spring is fixedly connected with the bottom of the limiting column. The top of the limiting column extends to the outside of the mounting column, and the outer wall of the limiting column is slidingly connected with the inner wall of the mounting column.

[0010] Preferably, the inner wall of the installation circular groove is provided with a cavity, and the top of the cavity is communicated with the adjusting channel. The outer walls of the lifting plate and the bearing plate are slidingly connected with the inner wall of the cavity.

[0011] Preferably, the bottom of the steel frame is provided with a groove, the inner part of the groove is provided with a threaded channel, and the outer wall of the threaded column is threadedly sleeved with the inner wall of the threaded channel.

[0012] Preferably, the fixing component further comprises a lifting block rotatably connected at the bottom of the threaded column, the outer wall of the lifting block is slidingly connected with the inner wall of the groove, and the bottom of the lifting block is fixedly connected with a limiting rod.

[0013] Preferably, the inner wall of the groove is mirror-imaged fixedly mounted with a connecting rod, and the connecting rod is rotatably sleeved with the clamping plate.

[0014] Preferably, the outer wall of the clamping plate is provided with a through groove, the limiting rod is in a "U" shaped structure, and the limiting rod penetrates through the through groove and is slidingly connected with the through groove.

[0015] Preferably, the clamping plate is arc-shaped structure, the bottom of the clamping plate extends to the bottom of the steel frame.

[0016] Compared with the prior art, the present application has the following advantages: The present application has only one end of the steel frame provided with a steel plate and a steel block, and the other end is provided with a mounting circular groove. When the steel frame is installed in a splicing manner, the end provided with the steel plate and the steel block is spliced and installed with the end of the other steel frame not provided with the steel plate and the steel block. The angle of the steel frame can be adjusted by changing the angle of the steel block in the mounting circular groove to make the steel frame fit the inner wall of the shaft. The position of the steel plate can be fixed by moving the plurality of limiting columns to the two sides of the steel plate. The angle of the steel plate is no longer automatically changed after the angle is adjusted. The plurality of steel frames are spliced and installed on the inner wall of the shaft and fit the inner wall of the shaft. The steel structure of the steel frame can temporarily support the inner wall of the shaft. Compared with the existing adjustable temporary support frame, the present application has the advantages of self-adaptive adjustment of the angle of the I-shaped steel frame according to the curvature of the inner wall of the shaft and convenient installation process.

[0017] In addition, during installation, the horizontal rod body of the protective net is placed between the two clamping plates. When the threaded column is rotated, the clamping plate is moved upward by the limiting rod. Because the two clamping plates are mirror images, the bottoms of the two clamping plates are rotated in opposite directions. The two clamping plates are combined. The top rod body of the protective net is placed between the two clamping plates. The two clamping plates are combined to limit and fix the protective net. The protective net is fixed between the upper and lower steel frames. The protective net is installed between the upper and lower steel frames to protect the gap between the steel frames. The falling of stones, soil blocks and the like from the inner wall of the shaft is avoided. The inner working site of the shaft is protected to improve safety. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the present application.

[0019] Figure 2 It is a schematic diagram of the structure of the steel frame after splicing of the present application.

[0020] Figure 3 It is a partial schematic diagram of the steel frame after splicing in the present application.

[0021] Figure 4 It is a schematic diagram of the structure of the steel frame in the present application.

[0022] Figure 5 It is a schematic diagram of the bottom of the steel frame in the present application.

[0023] Figure 6 It is a schematic diagram of the cross-sectional structure of the steel frame in the present application.

[0024] Figure 7 For Figure 6 Enlarged view of structure at A in the figure.

[0025] Figure 8 For the structure of the fixed component in the application.

[0026] Figure 9 For the structure of the two clamping plates in the application.

[0027] Figure 10 For the internal structure of the mounting column in the application.

[0028] In the figure: 1, steel frame; 2, steel plate; 3, steel block; 4, mounting channel; 5, adjusting channel; 6, threaded column; 7, lifting block; 71, limiting rod; 72, clamping plate; 73, connecting rod; 8, lifting plate; 81, bearing plate; 82, mounting column; 83, spring; 84, limiting column. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the application will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the application.

[0030] Please refer to Figures 1 to 10 The application provides a technical solution: an adjustable temporary support frame, comprising a steel frame 1, a mounting channel 4 provided on the top of the steel frame 1, and an adjusting channel 5 provided in the steel frame 1, further comprising a threaded column 6 threaded in the steel frame 1, a bearing plate 81 mounted on the outer wall of the threaded column 6 for self-adaptive adjustment of the mounting angle of the steel frame 1 according to the curvature of the inner wall of the shaft, and a fixed component for mounting and fixing the protective net. The fixed component comprises mirror-image arranged clamping plates 72 for adjusting and fixing the steel frame 1 and synchronously mounting the protective net. The limiting column 84 for fixing the steel frame 1 after adjustment is slidably mounted in the bearing plate 81.

[0031] As the embodiment, when the plurality of steel frames 1 are transported, the plurality of steel frames 1 can be stacked together, thereby facilitating the transportation of a large number of steel frames 1, the installation of the steel frames 1 on the inner wall of the shaft, the splicing installation of the plurality of steel frames 1 in contact with the inner wall of the shaft, the formation of the same circle as the inner wall of the shaft, and the temporary support effect of the plurality of steel frames 1 on the inner wall of the shaft. The gap between the upper and lower steel frames 1 is installed with a protective net, which can protect the gap between the steel frames 1, thereby avoiding the falling of stones, soil blocks and the like on the inner wall of the shaft, protecting the internal working site of the shaft, and improving the safety.

[0032] One end of the steel frame 1 is fixedly installed with a steel plate 2, and one end of the steel plate 2 is fixedly connected with a steel block 3.

[0033] As the embodiment, the steel frame 1 is provided with a steel plate 2 and a steel block 3 at one end, and the one end with the steel plate 2 and the steel block 3 is spliced and installed with the other end without the steel plate 2 and the steel block 3 of another steel frame 1. The plurality of steel frames 1 are spliced and installed on the inner wall of the shaft and in contact with the inner wall of the shaft. The steel structure performance of the steel frame 1 can temporarily support the inner wall of the shaft.

[0034] The top of the steel frame 1 is provided with an installation circular groove, and the outer wall diameter of the steel block 3 is the same as the inner wall diameter of the installation circular groove. The steel block 3 is a "circular ring" structure, and the inner wall diameter of the steel block 3 is greater than the diameter of the threaded column 6.

[0035] As the embodiment, when the one end with the steel plate 2 and the steel block 3 is spliced and installed with the other end without the steel plate 2 and the steel block 3 of another steel frame 1, the steel block 3 is sleeved outside the threaded column 6, and the threaded column 6 does not affect the steel block 3 when rotating.

[0036] The outer wall of the threaded column 6 is rotatably sleeved with a lifting plate 8. The bearing plate 81 is an arc structure, one end of the lifting plate 8 is fixedly connected with the inner wall of the bearing plate 81. The bottom of the bearing plate 81 is fixedly connected with an installation column 82, the inside of the installation column 82 is fixedly connected with a spring 83, and the top of the spring 83 is fixedly connected with the bottom of a limiting column 84. The top of the limiting column 84 extends to the outside of the installation column 82, and the outer wall of the limiting column 84 is slidably connected with the inner wall of the installation column 82.

[0037] As this embodiment, the top of the threaded column 6 extends to the outside of the steel frame 1, and the threaded column 6 can be rotated through the outside of the steel frame 1. A bolt head that is easy to rotate is fixedly installed on the top of the threaded column 6. The threaded column 6 will move upward through the threaded channel when rotating. Since the lifting plate 8 and the threaded column 6 are rotatably connected, the threaded column 6 will only drive the lifting plate 8 to move upward, and the lifting plate 8 will not rotate. The lifting plate 8 can then drive the limit column 84 to move upward through the supporting plate 81.

[0038] The inner wall of the mounting groove is provided with a cavity, and the top of the cavity is communicated with the adjustment channel 5; The outer walls of the lifting plate 8 and the carrying plate 81 are slidably connected to the inner wall of the cavity.

[0039] As this embodiment, the lifting plate 8 drives the limiting column 84 through the supporting plate 81, and the limiting column 84 will move to the inside of the adjustment channel 5. The number of the limiting columns 84 is several. When the several limiting columns 84 move upward, the limiting columns 84 limited by the steel plate 2 will be subjected to the resistance compression spring 83 and retract into the inside of the mounting column 82. The limiting columns 84 that are not hindered by the bottom of the steel plate 2 will be located on both sides of the steel plate 2 after moving upward. The limiting columns 84 located on both sides of the steel plate 2 will limit the position of the steel plate 2. The steel plate 2 will no longer change its position due to the limitation of the limiting columns 84, thereby fixing the angle of the steel frame 1.

[0040] A groove is provided at the bottom of the steel frame 1 , and a threaded channel is provided inside the groove. The outer wall of the threaded column 6 is threadably sleeved with the inner wall of the threaded channel.

[0041] As this embodiment, when the threaded column 6 is rotated, the threaded column 6 rotates through the threaded channel, and the threaded column 6 will slowly move upward when it is rotated in the forward direction, and will slowly move downward when it is rotated in the reverse direction.

[0042] The fixing component further includes a lifting block 7 rotatably connected to the bottom of the threaded column 6 , the outer wall of the lifting block 7 is slidably connected to the inner wall of the groove, and the bottom of the lifting block 7 is fixedly connected to a limiting rod 71 .

[0043] As for this embodiment, when the threaded column 6 is rotated, the threaded column 6 will drive the lifting block 7 to move together during the movement. Since the top of the lifting block 7 and the bottom of the threaded column 6 are rotatably connected, the lifting block 7 will only move upward and will not rotate with the threaded column 6.

[0044] A connecting rod 73 is fixedly mounted on the inner wall of the groove in a mirror-image manner, and the connecting rod 73 is rotatably sleeved with the clamping plate 72 .

[0045] As this embodiment, the connecting rod 73 can support and limit the clamping plate 72. When the clamping plate 72 is subjected to a force, it will rotate around the connecting rod 73. The outer wall of the clamping plate 72 is provided with a through groove, and the limiting rod 71 is in the shape of a "U" structure and penetrates through the through groove and is in sliding connection with the through groove.

[0046] The clamping plate 72 is in an arc structure, and the bottom of the clamping plate 72 extends to the bottom of the steel frame 1.

[0047] As the embodiment, the lifting block 7 moves together with the limiting rod 71 when the lifting block 7 moves, and since the limiting rod 71 penetrates through the through groove, when the limiting rod 71 moves upward, it drives one end of the clamping plate 72 to move upward, and the inner width of the through groove is large, so that the clamping plate 72 rotates around the connecting rod 73 as the center, and since the two clamping plates 72 are mirror image arranged, the bottoms of the two clamping plates 72 rotate in opposite directions, and the two clamping plates 72 rotate to be combined, the top rod body of the protective net is placed between the two clamping plates 72, and the two clamping plates 72 are combined at the bottom to limit and fix the protective net, so as to fix the protective net between the upper and lower steel frames 1.

[0048] Working principle: when the adjustable temporary support frame is used, first, one steel frame 1 is installed on the inner wall of the shaft, and then the steel plate 2 on the other steel frame 1 penetrates through the installation channel 4 so that the steel block 3 penetrates through the threaded column 6 and is located in the installation circular groove, the steel frame 1 is rotated to make the steel plate 2 rotate into the adjustment channel 5, at this time, the steel plate 2 and the steel block 3 can freely change the angle, so the angle of the steel frame 1 can be adjusted according to the curvature of the inner wall of the shaft to make it fit the inner wall of the shaft; The threaded column 6 is rotated and slowly moves upward through the threaded channel, and when the threaded column 6 moves upward, the lifting plate 8 moves upward, and since the top of the lifting block 7 is rotationally connected with the bottom of the threaded column 6, the lifting block 7 only moves upward and does not rotate with the threaded column 6, and then the lifting plate 8 drives the bearing plate 81, the installation column 82 and the limiting column 84 to move upward, the number of the installation column 82 and the limiting column 84 is multiple, the multiple limiting columns 84 move upward together, the limiting column 84 located directly below the steel plate 2 is blocked by the steel plate 2, the limiting column 84 blocked by the steel plate 2 is compressed by the resistance spring 83 and retracts into the installation column 82, the limiting column 84 not blocked by the bottom of the steel plate 2 moves upward and is located on both sides of the steel plate 2, and the limiting column 84 located on both sides of the steel plate 2 limits the position of the steel plate 2, so the steel plate 2 cannot change the position and the angle of the steel frame 1 is fixed; According to the same principle, multiple steel frames 1 can be spliced and installed together according to the curvature of the inner wall of the shaft, and the steel structure performance of the steel frame 1 can temporarily support the inner wall of the shaft; In the installation process, the transverse rod body of the protective net is placed between the two clamping plates 72, when the threaded column 6 is rotated, the threaded column 6 moves and drives the lifting block 7 to move, since the top of the lifting block 7 is rotationally connected with the bottom of the threaded column 6, the lifting block 7 only moves upward and does not rotate with the threaded column 6, since the limiting rod 71 penetrates through the through slot, when the lifting block 7 drives the limiting rod 71 to move upward, the limiting rod 71 drives one end of the clamping plate 72 to move upward, and the internal width of the through slot is large, so that the clamping plate 72 rotates around the connecting rod 73 as the center, since the two clamping plates 72 are mirror image arranged, the bottoms of the two clamping plates 72 rotate in opposite directions, and the two clamping plates 72 rotate to be combined (as shown in Figures 8-9 ). The top rod body of the protective net is placed between the two clamping plates 72, and the two clamping plates 72 are combined at the bottom to limit and fix the protective net, so that the protective net is fixed between the upper and lower steel frames 1 (as shown in Figures 1-3 ).

[0049] It should be noted that the two ends of the top of the steel frame 1 are provided with threaded columns 6, but the threaded column 6 at one end close to the steel plate 2 and the steel block 3 is only provided with a fixing part, without the lifting plate 8 and the bearing plate 81 and other structures, so that the bottom of the steel frame 1 can fix the transverse rod of the protective net through the two fixing parts, the installation of the protective net is more stable, and the influence on the spliced steel frame 1 is avoided.

[0050] The present application adopts the method that one end of the steel plate 2 and the steel block 3 is spliced and installed with the other end of the steel frame 1 without the steel plate 2 and the steel block 3, the angle of the steel frame 1 is adjusted by changing the angle of the steel block 3 in the installation circular groove to fit the inner wall of the shaft, the position of the steel plate 2 is fixed by moving the plurality of limiting columns 84 to the two sides of the steel plate 2 upward, so that the angle of the steel plate 2 is not changed automatically after being adjusted, the plurality of steel frames 1 are spliced and installed on the inner wall of the shaft and fit the inner wall of the shaft, in the installation process, the transverse rod body of the protective net is placed between the two clamping plates 72, when the threaded column 6 is rotated, the limiting rod 71 drives one end of the clamping plate 72 to move upward, since the two clamping plates 72 are mirror image arranged, the bottoms of the two clamping plates 72 rotate in opposite directions, and the two clamping plates 72 rotate to be combined, the top rod body of the protective net is placed between the two clamping plates 72, and the two clamping plates 72 are combined at the bottom to limit and fix the protective net, so that the protective net is fixed between the upper and lower steel frames 1.

[0051] Although the present application has been described in detail with reference to the foregoing embodiments, the technical solutions recorded in the foregoing embodiments can be modified, or some of the technical features can be replaced by equivalent features, by those skilled in the art, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An adjustable temporary support frame, comprising a steel frame (1), a mounting channel (4) opened on the top of the steel frame (1), and an adjustment channel (5) opened inside the steel frame (1), characterized in that: It also includes a threaded column (6) threadedly mounted inside the steel frame (1), a bearing plate (81) mounted on the outer wall of the threaded column (6) for adaptively adjusting the installation angle of the steel frame (1) according to the curvature of the inner wall of the shaft, and a fixing component for fixing the protective net; The fixing component includes a mirror-image arrangement of a clamping plate (72) for synchronously installing the protective net when adjusting the fixed steel frame (1); A limiting column (84) for adjusting and fixing the steel frame (1) is slidably mounted inside the bearing plate (81).

2. The adjustable temporary support frame according to claim 1, characterized in that: A steel plate (2) is fixedly mounted on one end of the steel frame (1), and a steel block (3) is fixedly connected to one end of the steel plate (2).

3. The adjustable temporary support frame according to claim 2, characterized in that: A mounting circular groove is provided on the top of the steel frame (1), and the outer wall diameter of the steel block (3) is the same as the inner wall diameter of the mounting circular groove; The steel block (3) is a "ring" shaped structure, and the diameter of the inner wall of the steel block (3) is greater than the diameter of the threaded column (6).

4. The adjustable temporary support frame according to claim 1, characterized in that: The outer wall of the threaded column (6) is rotatably sleeved with a lifting plate (8); The bearing plate (81) is an arc-shaped structure, and one end of the lifting plate (8) is fixedly connected to the inner wall of the bearing plate (81); The bottom of the bearing plate (81) is fixedly connected to a mounting column (82), the interior of the mounting column (82) is fixedly connected to a spring (83), and the top of the spring (83) is fixedly connected to the bottom of the limiting column (84); The top of the limiting column (84) extends to the outside of the mounting column (82), and the outer wall of the limiting column (84) is slidably connected to the inner wall of the mounting column (82).

5. The adjustable temporary support frame according to claim 4, characterized in that: The inner wall of the mounting groove is provided with a cavity, and the top of the cavity is communicated with the adjustment channel (5); The outer walls of the lifting plate (8) and the bearing plate (81) are both slidably connected to the inner wall of the cavity.

6. The adjustable temporary support frame according to claim 1, characterized in that: A groove is provided at the bottom of the steel frame (1), and a threaded channel is provided inside the groove. The outer wall of the threaded column (6) is threadably sleeved with the inner wall of the threaded channel.

7. The adjustable temporary support frame according to claim 6, characterized in that: The fixing component further comprises a lifting block (7) rotatably connected to the bottom of the threaded column (6), the outer wall of the lifting block (7) being slidably connected to the inner wall of the groove, and the bottom of the lifting block (7) being fixedly connected to a limiting rod (71).

8. The adjustable temporary support frame according to claim 7, characterized in that: A connecting rod (73) is fixedly mounted on the inner wall of the groove in a mirror-image manner, and the connecting rod (73) is rotatably sleeved with the clamping plate (72).

9. The adjustable temporary support frame according to claim 8, characterized in that: A through slot is formed on the outer wall of the clamping plate (72), and the limiting rod (71) is in a U-shaped structure. The limiting rod (71) passes through the through slot and is slidably connected to the through slot.

10. The adjustable temporary support frame according to claim 9, characterized in that: The clamping plate (72) is an arc-shaped structure, and the bottom of the clamping plate (72) extends to the bottom of the steel frame (1).

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