A spacing positioning device suitable for a tunnel steel arch

Abstract

The utility model relates to the technical fields of tunnel construction, specifically is a kind of spacing positioning device suitable for tunnel steel arch, it includes limiting handle, guide pipe and adjusting lever, guide pipe is inserted on adjusting lever, and one end of adjusting lever is connected with limiting plate perpendicularly, and guide pipe is provided with sliding slot along its length direction on it, and the circumferential direction of guide pipe is provided with multiple clamping slots communicated with sliding slot, one end of limiting handle passes through sliding slot and is fixedly connected with adjusting lever, limiting handle can relatively slide along sliding slot and then be stuck in the clamping slot set, and the side of guide pipe away from sliding slot is fixedly provided with the carding seat for carding I-beam, and the notch for carding I-beam is provided on the carding seat, and bolt mounting hole is provided on the carding seat, and bolt mounting hole is provided with bolt for locking carding seat and I-beam.The spacing positioning device suitable for tunnel steel arch of the utility model is cleverly structured, easy to operate, can realize different length adjustment, and adapt to different spacing positioning.

Description

Technical Field

[0001] This utility model relates to the technical field of tunnel construction, specifically to a spacing positioning device suitable for tunnel steel arch frames. Background Technology

[0002] In the excavation and support of tunnels such as highways, railways, and underground water diversion tunnels, strict requirements are typically placed on safety, construction quality, and structural dimensions. For initial tunnel support in geological conditions with poor surrounding rock, the design usually employs various types of steel arch frames as a skeleton, combined with wet-sprayed concrete to form a ring-shaped shell wall of a certain thickness to support the pressure from the surrounding rock (soil), ensuring that the tunnel clearance meets requirements and improving safety during tunnel operation. Steel arch frames are widely used in tunnel construction, and deviations in the arch frame spacing directly affect the support effect and functionality; therefore, corresponding measures must be taken to ensure proper arch frame spacing.

[0003] Currently, workers mainly measure the spacing of steel arch frames using rulers and standard objects (such as 1m steel). This method requires a dedicated person to perform the measurements, and the measurement accuracy error is relatively large, making it difficult to guarantee the pass rate of steel arch frame spacing. Based on on-site construction environmental factors and the experience of the construction personnel, the current construction method has the following shortcomings: 1. Measurement requires a dedicated person, wasting labor and increasing installation costs. 2. Using rulers and standard objects for measurement results in a large error in spacing control accuracy, easily causing a significant deviation between the actual spacing and the design spacing. Therefore, relevant research has been conducted on steel arch frame installation, and some tunnel steel arch frame positioning technologies have been reported, such as: 1. Chinese Patent: Multifunctional Steel Arch Frame Positioning Device, Application No.: 2022104833201, Application Date: 2022.05.05, Abstract: A multifunctional steel arch frame positioning device includes a base mounted on a steel arch frame, a mounting frame fixed on the base, and a first rod inserted into the mounting frame; one end of the first rod is connected to a bearing, a connecting rod is vertically inserted through the bearing, and an installation cylinder is connected to the end of the connecting rod near the steel arch frame; a second rod is inserted into the installation cylinder, and a drilling device is connected to one end of the second rod, which can rotate around the connecting rod; a sleeve is fixedly connected to one end of the base, a third rod is inserted into the sleeve, and a positioning rod is fixedly connected to the lower end of the third rod, abutting against one end of the steel arch frame; a positioning screw is provided at one end of the base, the positioning screw passes through a connecting steel plate, and a positioning nut is sleeved on the positioning screw. This disclosure combines welding positioning and drilling positioning into one, which is not only efficient but also convenient for construction personnel to use.

[0004] 2. Chinese Patent: A Positioning Device for a Tunnel Steel Arch Frame, Application No.: 202420943307.4, Application Date: April 29, 2024, Abstract: This utility model discloses a positioning device for a tunnel steel arch frame, including a first steel arch frame and a second steel arch frame disposed on one side of the first steel arch frame, and further including: a positioning mechanism disposed on the first steel arch frame and used for positioning the second steel arch frame during installation; the positioning mechanism includes: a first abutting plate abutting against the first steel arch frame; a second abutting plate abutting against the second steel arch frame; a fastening component disposed on the first abutting plate and used for fastening the first abutting plate to the first abutting plate; and an adjusting component adjusting the distance between the first abutting plate and the second abutting plate according to the width between the first steel arch frame and the second steel arch frame. This utility model, by setting a positioning mechanism, ensures that the second steel arch frame is in a vertical state, achieving maximum support strength for the second steel arch frame.

[0005] 3. Chinese Patent: A novel device for controlling the spacing of steel arch frames in the initial support of large-section tunnels, Application No.: 201922127493.6, Application Date: 2019.12.02, Abstract: This utility model discloses a novel device for controlling the spacing of steel arch frames in the initial support of large-section tunnels, including a longitudinal steel arch frame bracket. The longitudinal steel arch frame bracket is provided with a slide rail, and a locking block that slides along the slide rail is installed on the slide rail. The locking block has a U-shaped groove, and the longitudinal steel arch frame bracket is engraved with a scale. By locking the steel arch frame into the corresponding U-shaped groove and referring to the corresponding scale position of the locking block, the construction personnel can intuitively observe the spacing between adjacent steel arch frames. That is, according to actual needs, the spacing between adjacent steel arch frames can be adjusted accordingly, ensuring the consistency and accuracy of the spacing between steel arch frames.

[0006] Application research has revealed that currently used tunnel steel arch positioning devices are cumbersome to operate and cannot meet different spacing positioning requirements. Therefore, there is a need to develop a tunnel steel arch spacing positioning device that is easy to operate and can adapt to different spacing requirements. Summary of the Invention

[0007] The purpose of this invention is to address the problems existing in the prior art by providing a spacing positioning device suitable for tunnel steel arch frames. This spacing positioning device for tunnel steel arch frames has an ingenious structure, is easy to operate, and can achieve different length adjustments to adapt to different spacing positioning.

[0008] This utility model is achieved using the following technical solution: A spacing positioning device for tunnel steel arch frames includes a limiting handle, a guide tube, and an adjusting rod. The guide tube is inserted through the adjusting rod, and one end of the adjusting rod is vertically connected to a limiting plate. A groove is provided along the length of the guide tube, and multiple slots communicating with the groove are provided on the circumference of the guide tube. The slots are set according to the construction spacing requirements to facilitate construction personnel to quickly and accurately adjust the installation spacing of the steel arch frames. One end of the limiting handle passes through the groove and is fixedly connected to the adjusting rod. The limiting handle can slide relative to the groove and then lock in the set slot. A locking socket for inserting I-beams is fixedly provided on the side of the guide tube away from the groove. The locking socket has a slot for inserting I-beams and a bolt mounting hole. A bolt for locking the locking socket to the I-beam is installed in the bolt mounting hole.

[0009] A further preferred embodiment: the inner side of the slot is provided with anti-slip texture to enhance the friction between the card socket and the I-beam, ensuring the stability of the positioning device.

[0010] A further preferred embodiment: the bolt mounting holes are respectively located on the retaining sockets on both sides of the guide tube, and a nut for mounting the bolt is welded to the bolt mounting hole. Alternatively, the bolt mounting holes can be threaded holes, with the bolt threaded into the threaded holes.

[0011] A further preferred embodiment is that the bolt is provided with a rotating rod, which is used to increase the lever arm to facilitate the adjustment of the bolt elongation and control the frictional resistance of the contact surface with the I-beam, and is more conducive to the secure connection between the socket and the I-beam.

[0012] A further preferred embodiment: the rotating rod is movably inserted into the bolt, and its two ends can move to change the lever arm length, facilitating construction operations. The two ends of the rotating rod are larger than the insertion holes on the bolt to prevent it from falling off during transportation and use. Rotating the rotating rod causes the bolt to rotate within the nut, tightening the I-beam, allowing construction personnel to quickly fix the tunnel steel arch spacing positioning device onto the I-beam.

[0013] This spacing positioning device for tunnel steel arch frames features an ingenious structure, characterized by its simplicity, ease of operation, and high turnover efficiency. It uses a locking socket fixed to the I-beam of the arch frame with fastening bolts, supports height adjustment to accommodate different measurement positions, and utilizes an adjusting rod with an upper limit handle constraining the guide tube positioning slot to provide reaction force, keeping the long axis of the limiting plate horizontal. Different slot spacings achieve different measurement positions, significantly improving the installation efficiency and accuracy of the steel arch frame, and providing a convenient and efficient spacing positioning control solution for tunnel construction. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the spacing positioning device applicable to tunnel steel arch frames; Figure 2This is a schematic diagram showing the connection between the spacing positioning device for tunnel steel arch frames and the fixed connection with the I-beam. Figure 3 This is a top view showing the connection between the spacing positioning device for tunnel steel arch frames and the fixed connection with the I-beams; The component names corresponding to the serial numbers in the diagram are: 1. Limit handle, 2. Card socket, 3. Guide tube, 4. Limit plate, 5. Adjusting rod, 6. Rotating rod, 7. Bolt, 8. Card slot, 9. Slide groove, 10. I-beam. Detailed Implementation

[0015] The technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings and embodiments. The described embodiments are only a part of this utility model, and not all of them.

[0016] Example

[0017] A spacing positioning device for tunnel steel arch frames includes a limiting handle 1, a guide tube 3, and an adjusting rod 5. The guide tube 3 is inserted through the adjusting rod 5, and one end of the adjusting rod 5 is vertically connected to a limiting plate 4. A sliding groove 9 is provided on the guide tube 3 along its length direction, and multiple slots 8 communicating with the sliding groove 9 are provided on the circumference of the guide tube 3. The slots 8 are set according to the construction spacing requirements to facilitate the construction personnel to quickly and accurately adjust the installation spacing of the steel arch frames. One end of the limiting handle 1 passes through the sliding groove 9 and is fixedly connected to the adjusting rod 5. The limiting handle 1 can slide relative to the sliding groove 9 and then be locked in the set slot 8. A locking socket 2 for inserting an I-beam 10 is fixedly provided on the side of the guide tube 3 away from the sliding groove 9. The locking socket 2 is provided with a slot for inserting the I-beam 10 and a bolt mounting hole. A bolt 7 for locking the locking socket 2 and the I-beam 10 is installed in the bolt mounting hole.

[0018] The inner side of the slot is provided with anti-slip texture to enhance the friction between the card socket and the I-beam, ensuring the stability of the positioning device.

[0019] The bolt mounting holes are respectively located on the retaining sockets 2 on both sides of the guide tube 3, and a nut for mounting the bolt 7 is welded to the bolt mounting hole. Alternatively, the bolt mounting hole can be a threaded hole, and the bolt 7 is threaded into the threaded hole.

[0020] The bolt 7 is provided with a rotating rod 6. The rotating rod 6 is used to increase the lever arm to facilitate the adjustment of the bolt elongation and control the frictional resistance of the contact surface with the I-beam, which is more conducive to the secure connection between the socket and the I-beam.

[0021] The rotating rod 6 is movably inserted into the bolt 7, and its two ends can be moved to change the lever arm length, which facilitates construction operations. The two ends of the rotating rod 6 are larger than the insertion holes on the bolt 7 to prevent it from falling off during transportation and use. Rotating the rotating rod 6 causes the bolt 7 to rotate inside the nut and tighten the I-beam 10, which makes it easy for construction personnel to quickly fix the tunnel steel arch frame spacing positioning device onto the I-beam 10.

[0022] The application process of this spacing positioning device for tunnel steel arch frames is as follows: the guide tube 3 and the adjusting rod 5 rotate relative to each other, so that the limiting handle 1 is located in the slide groove 9. According to the spacing requirements of the tunnel steel arch frame, the guide tube 3 is pulled to make it move relative to the adjusting rod 5. The limiting plate 4 is locked on one side of one H-beam 10, and the slot of the locking socket 2 is locked on one side of another H-beam 10. Then, the bolt 7 is locked to the H-beam 10 by rotating the rotating rod 6, and the limiting handle 1 is moved to make the adjusting rod 5 and the guide tube 3 rotate relative to each other. The limiting handle 1 is stuck in the corresponding slot 8. Since the limiting handle 1 is stuck, the guide tube 3 and the adjusting rod 5 cannot move relative to each other, and the spacing positioning of the two H-beams 10 is completed.

[0023] The above description is not intended to limit the present utility model, nor is the present utility model limited to the above examples. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present utility model should be protected by the present utility model.

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