Semi-automatic positioning device for punching tunnel steel arch connection steel plate

Abstract

The application relates to a kind of semi-automatic positioning device of tunnel steel arch connection steel plate punching, including limiting disc, limiting disc includes supporting plate, the end of supporting plate is provided with clamping edge, multiple supporting plates are arranged in plane intersection, and intermediate flat plate is equipped at intersection, and the net distance between each opposite clamping edge is matched with the size of connection steel plate;Limiting piece, limiting piece includes limiting tube, the upper end of limiting tube is connected with the intermediate flat plate, rotating mechanism is arranged in the middle part, the lower end of limiting tube is equipped with multiple positioning slots corresponding with the number and position of connection steel plate bolt hole;Positioning piece, positioning piece includes positioning column, the outer diameter of positioning column is less than the inner diameter of limiting tube, positioning shaft is transversely arranged in positioning column, rotatable shaft sleeve is sleeved on positioning shaft, limiting tube is rotatably sleeved on positioning column by the positioning slot in the lower end thereof and the shaft sleeve cooperation.The utility model need not to measure hole position and make mark to each connection steel plate, operation is extremely simple, and work efficiency is significantly improved.

Description

Technical Field

[0001] This application relates to the field of construction auxiliary tools technology, and in particular to a semi-automatic positioning device for punching holes in the connecting steel plates of a tunnel steel arch frame. Background Technology

[0002] In tunnel construction, initial support is required promptly after excavation. For sections with poor surrounding rock conditions, steel arches are often used as reinforcement. These steel arches are typically fabricated in sections off-site and then assembled on-site using connecting steel plates and bolts. The connecting steel plates are generally square with four symmetrically arranged bolt holes. The positional accuracy of these bolt holes is crucial; excessive deviation can lead to the inability to assemble the steel arches, twisting deformation, and even serious safety accidents such as support failure and tunnel collapse.

[0003] Currently, many construction sites still use conventional punch presses to punch holes in connecting steel plates. Operators need to first mark the center position of each hole on the steel plate, and then visually adjust the plate's position during punching to align the marks with the punch center. This method has the following disadvantages: 1) The pre-layout and marking process is cumbersome and inefficient; 2) Manual visual positioning is subject to random errors, resulting in large hole position deviations and unstable quality; 3) Repeated adjustments to the steel plate position further hampered construction efficiency. Although large CNC equipment can complete punching with high precision in one go, its purchase or rental costs are high, making it unsuitable for widespread adoption in all tunnel projects. Utility Model Content Therefore, it is necessary to provide a semi-automatic positioning device for punching holes in the steel plate connecting the tunnel steel arch frame, in order to overcome the defects mentioned in the background art.

[0004] A semi-automatic positioning device for punching holes in steel plates connecting tunnel steel arch frames includes: The limiting plate includes a support plate, the end of which is provided with a retaining edge. Multiple support plates are arranged in a cross pattern, and a middle plate is provided at the intersection. The net distance between each relative retaining edge matches the size of the connecting steel plate. The limiting component includes a limiting tube, the upper end of which is connected to the intermediate plate, a rotating mechanism is provided in the middle, and the lower end of the limiting tube is provided with multiple positioning grooves corresponding to the number and position of the bolt holes of the connecting steel plate. The positioning component includes a positioning post with an outer diameter smaller than the inner diameter of a limiting tube. A positioning shaft is transversely inserted through the positioning post, and a rotatable bushing is fitted on the positioning shaft. The limiting tube is rotatably fitted onto the positioning post by engaging with the bushing through a positioning groove at its lower end.

[0005] As a preferred embodiment of the semi-automatic positioning device for punching holes in the connecting steel plate of the tunnel steel arch frame in this utility model, the positioning groove is arranged at intervals along the circumference with the central axis of the limiting tube as the center, and the connection between the positioning grooves is a smooth arc shape that goes down first and then up.

[0006] As a preferred embodiment of the semi-automatic positioning device for punching holes in the connecting steel plate of the tunnel steel arch frame in this utility model, the positioning shaft is provided with a baffle to prevent the bushing from falling off.

[0007] As a preferred embodiment of the semi-automatic positioning device for punching holes in the connecting steel plate of the tunnel steel arch frame in this utility model, the distance from the top surface of the limiting tube to the upper opening of the positioning groove is less than the distance from the top surface of the positioning column to the upper edge of the positioning shaft, and the distance from the top surface of the limiting tube to its arc-shaped bottom surface is greater than the distance from the top surface of the positioning column to the upper edge of the positioning shaft.

[0008] As a preferred embodiment of the semi-automatic positioning device for punching holes in the connecting steel plates of the tunnel steel arch frame in this utility model, the support plates are arranged with a gap structure.

[0009] As a preferred embodiment of the semi-automatic positioning device for punching holes in the connecting steel plate of the tunnel steel arch frame in this utility model, it also includes a base plate, which is disposed at the lower end of the limiting tube.

[0010] The beneficial effects of this utility model are: This invention eliminates the need for measuring and marking the hole positions on each connecting steel plate during use. The hole positions can be switched simply by rotating the rotating ring during punching, making operation extremely convenient and significantly improving efficiency. Positioning is achieved through a mechanical limit disc and positioning groove-sleeve combination, completely eliminating accidental errors caused by manual visual alignment and ensuring consistency in hole positions across all connecting steel plates. The device is primarily constructed from ordinary steel and standard parts, featuring a simple structure, easy processing, low cost, durability, and high cost-effectiveness. This self-contained device requires no modification to existing punch presses and can be adjusted and installed according to the punch press's operating table. Once installed, it can be used long-term without further adjustments, making it widely applicable. Attached Figure Description

[0011] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1 This is a schematic diagram of the overall structure of the positioning device according to an embodiment of this application; Figure 2 This is a top view of the limiting tube according to an embodiment of this application; Figure 3 This is a front view of the connection between the positioning element and the base plate in an embodiment of this application; Explanation of reference numerals in the attached figures: 1000, Limiting plate; 1100, Intermediate plate; 1200, Support plate; 1300, Edge clamp; 2000, limiting component; 2100, limiting tube; 2200, support rod; 2300, rotating ring; 2400, positioning groove; 3000, Positioning component; 3100, Positioning pin; 3200, Positioning shaft; 3300, Bushing; 3400, Baffle; 4000, Base plate. Detailed Implementation

[0013] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0014] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0015] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0016] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0017] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0018] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0019] According to one aspect of this application, embodiments of this application provide a semi-automatic positioning device for punching holes in the connecting steel plates of a tunnel steel arch frame, please refer to the following: Figures 1 to 3The semi-automatic positioning device for punching holes in the connecting steel plates of the tunnel steel arch frame includes a limiting plate 1000, a limiting component 2000, a positioning component 3000, and a base plate 4000. The limiting plate 1000 includes a support plate 1200, with a retaining edge 1300 at the end of the support plate 1200. Multiple support plates 1200 are arranged in a cross-plane, with an intermediate plate 1100 at the intersection. The clear distance between the corresponding retaining edges 1300 matches the size of the connecting steel plate. The limiting component 2000 includes a limiting tube 2100, the upper end of which is connected to the intermediate plate 1100, and a portion thereof is provided with... The device is equipped with a rotating mechanism. The lower end of the limiting tube 2100 is provided with multiple positioning grooves 2400 corresponding to the number and position of the bolt holes of the connecting steel plate. The positioning component 3000 includes a positioning post 3100, the outer diameter of which is smaller than the inner diameter of the limiting tube 2100. The positioning post 3100 is transversely provided with a positioning shaft 3200. A rotatable bushing 3300 is sleeved on the positioning shaft 3200. The limiting tube 2100 is rotatably sleeved on the positioning post 3100 through the positioning groove 2400 at its lower end and the bushing 3300. The base plate 4000 is provided at the lower end of the limiting tube 2100 to provide a support point.

[0020] In one embodiment, see Figure 1 The limiting plate 1000 includes at least two sets of intersecting support plates 1200, forming a frame structure. At the end of each support plate 1200, an upwardly extending angle steel is vertically welded as a retaining edge 1300. According to the standard size of the steel plate to be processed and connected, the inner clearance distance between the two sets of opposite retaining edges 1300 is precisely set so that it is exactly equal to the side length of the steel plate, thereby ensuring that the steel plate can be accurately positioned at the center of the limiting plate 1000 after being placed in. The intersection of the support plates 1200 is connected to the limiting member 2000 by welding a reinforcing intermediate plate 1100. The gap structure formed between the support plates 1200 provides the necessary space for the punch to descend and for scrap to fall off during punching.

[0021] In one embodiment, see Figure 1 and Figure 2 The limiting component 2000 includes a vertical limiting tube 2100, the upper end of which is welded and fixed to the intermediate plate 1100. A rotating mechanism is provided in the middle of the limiting tube 2100, which includes at least one radially extending support rod 2200. The end of the support rod 2200 is provided with a rotating ring 2300 for the operator to hold and apply force. At the lower end of the limiting tube 2100, multiple positioning grooves 2400 are evenly opened along its circumference and extend axially along the limiting tube 2100. These positioning grooves 2400 are arranged with the central axis of the limiting tube 2100 as the center and the central angle corresponding to each segment of the circumference with the distance between the bolt holes of the connecting steel plate into the limiting plate as the radius. The end face of the limiting tube 2100 between the positioning grooves 2400 is processed into a smooth arc surface that first goes down and then up.

[0022] In one embodiment, see Figure 1 and Figure 2 The positioning grooves 2400 are arranged at intervals along the circumference with the central axis of the limiting tube 2100 as the center. The connection between the positioning grooves 2400 is a smooth, rounded arc surface that goes down first and then up, so as to facilitate rotation.

[0023] In one embodiment, see Figure 1 and Figure 3 The positioning component 3000 includes a positioning post 3100 vertically welded to the base plate 4000. Its outer diameter is smaller than the inner diameter of the limiting tube 2100, so that the limiting tube 2100 can be smoothly fitted around the positioning post 3100 and rotate around it. At the lower part of the positioning post 3100, a positioning shaft 3200 is transversely inserted. A freely rotatable bushing 3300 is fitted on the middle part of the positioning shaft 3200. The two ends of the positioning shaft 3200 are connected by nuts to form baffles 3400 to prevent the bushing 3300 from falling off.

[0024] In one embodiment, see Figure 1 , Figure 2 and Figure 3 The distance from the top surface of the limiting tube 2100 to the upper opening of the positioning groove 2400 is less than the distance from the top surface of the positioning post 3100 to the upper edge of the positioning shaft 3200, and the distance from the top surface of the limiting tube 2100 to its arc-shaped bottom surface is greater than the distance from the top surface of the positioning post 3100 to the upper edge of the positioning shaft 3200. The end face of the limiting tube 2100 between the positioning grooves 2400 is processed into a smooth arc shape that goes down first and then up. This structure serves two purposes: first, it determines the position of the positioning groove 2400; the central angle and radius determine the position of the bolt hole to be punched; second, it sets the smooth arc shape that goes down first and then up. The design is that when an initial rotational force is applied to the limiting tube 2100, the limiting tube 2100 drives the connecting steel plate to rise along an arc, avoiding excessive friction between the limiting tube 2100 and the connecting steel plate on the positioning post 3100, which would prevent further rotation. After the limiting tube 2100 rotates past the lowest point, it moves upward along an arc and slides to the next lowest point, realizing a semi-automatic function that can automatically position itself by applying an initial rotational force. The bushing of the positioning shaft 3200 can rotate flexibly, which can reduce the friction of the limiting tube 2100 during rotation.

[0025] Working Principle: The device is fixed to the punch press worktable via the base plate 4000. When changing the connecting steel plate, gently lift the rotating ring 2300 upwards to disengage the bushing 3300 from the positioning groove 2400. Rotate the limiting member 2000 to the replacement position to remove the old steel plate and insert the new one. Then, reverse the operation to return the limiting member 2000 to the installation position. At this point, the connecting steel plate is precisely aligned by the clamping edge 1300. Push the steel plate so that its end abuts against the punch press positioning block to begin punching. After punching each hole, gently lift and rotate the rotating ring 2300. Utilizing the smooth arc surface design of the lower end face of the limiting tube 2100 (first downward, then upward), after applying initial rotational force, the limiting tube 2100 can automatically lift, rotate, and slide the connecting steel plate into the next positioning groove 2400 to complete positioning, allowing for the punching of the next hole, until all holes are processed.

[0026] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0027] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A semi-automatic positioning device for punching holes in steel plates connecting tunnel steel arch frames, characterized in that, include: The limiting plate includes a support plate, the end of which is provided with a retaining edge. Multiple support plates are arranged in a cross pattern, and a middle plate is provided at the intersection. The net distance between each relative retaining edge matches the size of the connecting steel plate. The limiting component includes a limiting tube, the upper end of which is connected to the intermediate plate, a rotating mechanism is provided in the middle, and the lower end of the limiting tube is provided with multiple positioning grooves corresponding to the number and position of the bolt holes of the connecting steel plate. The positioning component includes a positioning post with an outer diameter smaller than the inner diameter of a limiting tube. A positioning shaft is transversely inserted through the positioning post, and a rotatable bushing is fitted on the positioning shaft. The limiting tube is rotatably fitted onto the positioning post by engaging with the bushing through a positioning groove at its lower end.

2. The semi-automatic positioning device for punching holes in the connecting steel plate of the tunnel steel arch frame according to claim 1, characterized in that, The positioning grooves are arranged at intervals along the circumference with the central axis of the limiting tube as the center, and the connection between the positioning grooves is a smooth arc shape that goes down first and then up.

3. The semi-automatic positioning device for punching holes in the connecting steel plate of the tunnel steel arch frame according to claim 1, characterized in that, The positioning shaft is equipped with a baffle to prevent the bushing from falling off.

4. The semi-automatic positioning device for punching holes in the connecting steel plate of the tunnel steel arch frame according to claim 1, characterized in that, The distance from the top surface of the limiting tube to the upper opening of the positioning groove is less than the distance from the top surface of the positioning post to the upper edge of the positioning shaft, and the distance from the top surface of the limiting tube to its arc-shaped bottom surface is greater than the distance from the top surface of the positioning post to the upper edge of the positioning shaft.

5. The semi-automatic positioning device for punching holes in the connecting steel plate of the tunnel steel arch frame according to claim 1, characterized in that, The support plates are separated by a gap structure.

6. The semi-automatic positioning device for punching holes in the connecting steel plate of the tunnel steel arch frame according to claim 1, characterized in that, It also includes a base plate, which is disposed at the lower end of the limiting tube.

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