Tunnel steel arch frame spacing control fixture

Abstract

The utility model discloses a kind of tunnel steel arch frame spacing control fixtures, it is related to the field of tunnel support construction, including positioning plate, adjustable connecting mechanism and the fixed component for being fixed on the steel arch frame that has been installed, the positioning plate is used to contact with the steel arch frame to be installed to determine its spacing;Adjustable connecting mechanism is installed between fixed component and positioning plate, for adjusting the distance between the two, the utility model is by U type card cooperation fastening bolt structure, can be quickly clamped and firmly fixed U type card on the steel arch frame that has been installed, provide stable support for adjustable connecting mechanism and positioning plate, without worker continuous hand holding, and adjustable connecting mechanism, the distance between positioning plate and U type card can be accurately adjusted, effectively control the design spacing between the steel arch frame to be installed and the steel arch frame that has been installed, guarantee the normativity and security of tunnel support structure.

Description

Technical Field

[0001] This utility model belongs to the field of tunnel support construction, specifically relating to a tunnel steel arch frame spacing control clamp. Background Technology

[0002] In the initial support construction of tunnel engineering, steel arch frames are key load-bearing components, and their installation quality directly affects the overall stability and safety of the support structure. To ensure uniform support effect and reasonable stress distribution, adjacent steel arch frames must maintain the design-required equal spacing, and each steel arch frame must be strictly kept vertical.

[0003] Chinese patent CN208282748U discloses a "tunnel steel arch frame clamp ruler," which includes a horizontal connecting rod, end rods vertically arranged at both ends, and a bubble level mounted on the connecting rod. This clamp ruler controls the spacing between adjacent steel arch frames through a horizontal connecting rod of fixed length and uses the bubble level to assist in adjusting the verticality of the steel arch frames, thereby improving installation accuracy and construction efficiency to a certain extent.

[0004] However, this clamping ruler mainly relies on the cooperation of the horizontal connecting rod and the end rod for spacing positioning. It lacks a stable connection structure with the installed steel arch frame, requires workers to hold it continuously, and cannot connect and position the steel arch frame to be installed after it is in place.

[0005] Therefore, we propose a tunnel steel arch spacing control fixture to solve the above problems. Utility Model Content

[0006] To address the problem that the clamp ruler mainly relies on the cooperation of horizontal connecting rods and end rods for spacing positioning, lacks a stable connection structure with the installed steel arch frame, requires workers to hold it continuously, and cannot connect and position the steel arch frame to be installed after it is in place, this utility model provides a tunnel steel arch frame spacing control clamp.

[0007] The solution adopted by this utility model to solve its technical problem is: a tunnel steel arch frame spacing control clamp, including a positioning plate, an adjustable connecting mechanism and a fixing component for fixing to the installed steel arch frame, wherein the positioning plate is used to contact the steel arch frame to be installed to determine its spacing; An adjustable connection mechanism is installed between the fixed component and the positioning plate to adjust the distance between them.

[0008] Preferably, the fixing component includes a U-shaped clip and two fastening bolts. Two fixing nuts are welded and fixed on the side of the U-shaped clip away from the adjustable connecting mechanism. The fastening bolts are threadedly engaged with the fixing nuts, and their ends are pressed against the steel arch frame to fix the U-shaped clip to the steel arch frame.

[0009] Preferably, the positioning plate has two through holes, and the positioning plate is made of steel plate.

[0010] Preferably, it also includes two irregularly shaped clamping rods and corresponding adjusting nuts. The irregularly shaped clamping rods are composed of a U-shaped section and a threaded section, wherein the threaded end passes through the through hole and is threadedly connected to the adjusting nut, and the other end of the irregularly shaped clamping rod abuts against the steel arch frame to be installed.

[0011] Preferably, the adjustable connecting mechanism is a turnbuckle, with connecting nuts threaded to both ends of the turnbuckle, and the two connecting nuts are welded and fixed to the opposite sides of the U-shaped clip and the positioning plate, respectively.

[0012] Preferably, the adjustable connection mechanism includes an outer ruler and an extension ruler. One end of the outer ruler is fixedly connected to a U-shaped clip, and one end of the extension ruler is fixedly connected to a positioning plate. The extension ruler is slidably inserted into the inner cavity of the outer ruler. The end of the outer ruler away from the U-shaped clip is provided with a threaded hole. A set screw is threaded into the threaded hole, and the inner end of the set screw abuts against the extension ruler to lock its position.

[0013] Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model uses a U-shaped clip and fastening bolt structure to quickly clamp and firmly fix the U-shaped clip to the installed steel arch frame, providing stable support for the adjustable connection mechanism and positioning plate. It eliminates the need for workers to hold the clip continuously. Furthermore, the adjustable connection mechanism can precisely adjust the distance between the positioning plate and the U-shaped clip, effectively controlling the design spacing between the steel arch frame to be installed and the installed steel arch frame, ensuring the standardization and safety of the tunnel support structure.

[0014] 2. This utility model, by setting up a special-shaped clamping rod and an adjusting nut, after the steel arch frame to be installed is in place, the threaded end of the special-shaped clamping rod is passed through the through hole, and by tightening the adjusting nut, the other end of the special-shaped clamping rod is pressed against the steel arch frame to be fixed, clamping and positioning it to prevent it from shifting during construction and ensuring accurate positioning of the steel arch frame. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a top view of the structure of Embodiment 2 of the present invention; Figure 3 This is a top view of the structure of Embodiment 2 of this utility model.

[0016] In the diagram: 1 U-shaped clip, 21 fixing nut, 22 fastening bolt, 31 turnbuckle, 32 connecting nut, 41 positioning plate, 42 special-shaped clamping rod, 43 adjusting nut, 5 steel arch frame, 61 outer ruler, 62 extension ruler, 63 set screw. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0018] Please see Figure 1-3 This utility model provides a technical solution for a tunnel steel arch frame spacing control clamp: Example 1: according to Figure 1 As shown, it includes a positioning plate 41, an adjustable connecting mechanism, and a fixing component for fixing to the installed steel arch frame 5. The fixing component includes a U-shaped clip 1 and two fastening bolts 22. Two fixing nuts 21 are welded to the side of the U-shaped clip 1 away from the adjustable connecting mechanism. The fastening bolts 22 are threadedly engaged with the fixing nuts 21, and their ends are pressed against the steel arch frame 5 to fix the U-shaped clip 1 to the steel arch frame 5.

[0019] The positioning plate 41 has two through holes. The positioning plate 41 is made of steel plate. An adjustable connecting mechanism is installed between the U-shaped clip 1 and the positioning plate 41. The distance between the positioning plate 41 and the U-shaped clip 1 can be precisely adjusted to effectively control the design spacing between the steel arch frame 5 to be installed and the already installed steel arch frame 5, ensuring the standardization and safety of the tunnel support structure. The positioning plate 41 is used to contact the steel arch frame 5 to be installed to determine its spacing.

[0020] It also includes two irregular clamping rods 42 and corresponding adjusting nuts 43. The irregular clamping rods 42 are composed of a U-shaped section and a threaded section. After the steel arch frame 5 to be installed is in place, the threaded end of the irregular clamping rod 42 is passed through the through hole. By tightening the adjusting nut 43, the other end of the irregular clamping rod 42 is pressed against the steel arch frame 5 to be fixed, clamping and positioning it to prevent it from shifting during construction and ensuring that the steel arch frame 5 is accurately positioned.

[0021] In practical use, the tunnel steel arch frame spacing control clamp of this utility model is first inserted into the front of the installed steel arch frame 5 by inserting the U-shaped clamp 1. Then, the two fastening bolts 22 are tightened one by one so that the ends of the fastening bolts 22 are pressed against the web of the steel arch frame 5, so that the U-shaped clamp 1 is firmly fixed on the installed steel arch frame 5. Then, the steel arch frame 5 to be installed is hoisted so that its side is close to the positioning plate 41 that has been adjusted. At this time, the design spacing between the steel arch frame 5 to be installed and the installed steel arch frame 5 is guaranteed. After the steel arch frame 5 to be installed is in place, the threaded section of the special-shaped clamping rod 42 is passed through the corresponding through hole on the positioning plate 41, and then the adjusting nut 43 is screwed on the threaded end. By adjusting the clamping force of the adjusting nut 43 on the positioning plate 41, the other end of the special-shaped clamping rod 42 is driven to retract inward, firmly clamping the steel arch frame 5 to be installed, preventing it from shifting during subsequent construction.

[0022] Example 2: Based on Example 1, such as Figure 1 and Figure 2 As shown, the adjustable connecting mechanism is a turnbuckle 31. The turnbuckle 31 can be quickly adjusted to adapt to different design spacings. The two ends of the turnbuckle 31 are respectively threaded with connecting nuts 32. The two connecting nuts 32 are respectively welded and fixed to the opposite sides of the U-shaped clip 1 and the positioning plate 41. By connecting the two connecting nuts 32 with the turnbuckle 31, the U-shaped clip 1 and the positioning plate 41 can be quickly connected or separated from the turnbuckle 31.

[0023] Example 3: Based on Example 1, such as Figure 3 As shown, the adjustable connection mechanism includes an outer ruler 61 and an extension ruler 62. One end of the outer ruler 61 is fixedly connected to the U-shaped clip 1, and one end of the extension ruler 62 is fixedly connected to the positioning plate 41. The extension ruler 62 is slidably inserted into the inner cavity of the outer ruler 61. The end of the outer ruler 61 away from the U-shaped clip 1 is provided with a threaded hole, and a set screw 63 is threaded into the threaded hole. The inner end of the set screw 63 presses against the extension ruler 62 to lock its position. The adjustable connection mechanism composed of the outer ruler 61 and the extension ruler 62 can not only flexibly adjust the distance between the U-shaped clip 1 and the positioning plate 41 to adapt to the installation requirements of steel arch frames 5 with different design spacings, but also the scale set on its surface can make it easy for construction personnel to read and accurately control the spacing dimensions, which significantly improves the accuracy of installation positioning and the convenience of operation.

Claims

1. A tunnel steel arch frame spacing control clamp, comprising a positioning plate, an adjustable connecting mechanism, and a fixing component for fixing to an installed steel arch frame, characterized in that: The positioning plate is used to contact the steel arch frame to be installed to determine its spacing. The positioning plate has two through holes and is made of steel plate. It also includes two irregular clamping rods and a corresponding number of adjusting nuts. The irregular clamping rods are composed of a U-shaped section and a threaded section. The threaded end passes through the through hole and is threadedly connected to the adjusting nut. The other end of the irregular clamping rod abuts against the steel arch frame to be installed. An adjustable connection mechanism is installed between the fixed component and the positioning plate to adjust the distance between them.

2. The tunnel steel arch spacing control clamp according to claim 1, characterized in that: The fixing component includes a U-shaped clip and two fastening bolts. Two fixing nuts are welded to the side of the U-shaped clip away from the adjustable connecting mechanism. The fastening bolts are threadedly engaged with the fixing nuts, and their ends are pressed against the steel arch frame to fix the U-shaped clip to the steel arch frame.

3. The tunnel steel arch frame spacing control clamp according to claim 2, characterized in that: The adjustable connection mechanism is a turnbuckle, with connecting nuts threaded to both ends of the turnbuckle. The two connecting nuts are welded and fixed to the opposite sides of the U-shaped clip and the positioning plate, respectively.

4. The tunnel steel arch spacing control clamp according to claim 2, characterized in that: The adjustable connection mechanism includes an outer ruler and an extension ruler. One end of the outer ruler is fixedly connected to a U-shaped clip, and one end of the extension ruler is fixedly connected to a positioning plate. The extension ruler is slidably inserted into the inner cavity of the outer ruler. The end of the outer ruler away from the U-shaped clip is provided with a threaded hole. A set screw is threaded into the threaded hole, and the inner end of the set screw abuts against the extension ruler to lock its position.

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