Steel arch connecting plate welding positioning device

Abstract

The utility model relates to the field of steel plate welding auxiliary equipment discloses steel arch support connecting plate welding positioning device, including two groups of fixed establishment and connecting assembly, and the fixed establishment all includes fixed link, two -way screw rod, stopper and is used for holding two clamps of I -beam, and the both ends of fixed link lower surface all are equipped with two lug plates, and the both ends of stopper are fixedly connected with two lug plates respectively, and two -way screw rod both ends are rotatably connected with two lug plates, still be equipped with the rotating mechanism for driving two -way screw rod rotation, and two -way screw rod surface symmetry is equipped with the thread of contrary rotation, and two clamps symmetry sets up in two -way screw rod both sides, and the threaded hole of being able to with two -way screw rod thread connection and the sliding hole of sliding cooperation with stopper are all opened on the clamps, and the surface of one fixed link is provided with the positioning piece for positioning to the other fixed link, to provide the positioning device of accurate positioning and can quick positioning.

Description

Technical Field

[0001] This utility model relates to the field of auxiliary equipment for steel plate welding, specifically to a welding positioning device for steel arch frame connecting plates. Background Technology

[0002] In the construction of underground projects such as tunnels, subways, water diversion tunnels, and underground caverns, steel arch frames are widely used for support to ensure the stability of surrounding rock in unstable areas. A steel arch frame is typically assembled from multiple standard units connected by bolts. Each unit mainly consists of an I-beam and connecting plates welded to both ends of the I-beam. The connecting plates have through holes for the connecting bolts to pass through. A crucial step in the fabrication of the steel arch frame unit is to precisely weld and position the connecting plates to the ends of the I-beam. The core requirement is that when two I-beam units need to be connected on-site, their connecting plates must fit tightly together, and the bolt holes on the connecting plates must be precisely aligned to ensure that the connecting bolts can be smoothly inserted and apply sufficient preload, ultimately forming a reliable force-transfer node connection.

[0003] However, in actual construction, due to the large number of steel arch frame units processed, the welding and positioning of the connecting plates needs to be repeated. This process presents significant challenges, including the inefficiency of traditional measurement and positioning methods. In numerous repetitive operations, errors in manual measurement and positioning are unavoidable, easily leading to deviations in the welding position of the connecting plates at the ends of the I-beams. This results in problems such as misaligned through holes on the connecting plates and the two connecting plates not fitting tightly when connecting two I-beams. Consequently, the connection of the I-beams becomes a weak link in the steel arch frame construction, affecting the stress distribution at the connecting plates and consequently... The existing positioning equipment is cumbersome and inefficient because it affects the supporting effect of the steel arch frame on the surrounding rock. For example, Chinese patent document CN108612323A discloses an auxiliary positioning device and construction method for connecting steel plates of I-beam steel frames. It uses a vertical plate that fits against the side of the I-beam, and a second horizontal plate that is vertically positioned below the vertical plate and away from the side where the I-beam is located. According to the described operation steps, the horizontal plate needs to be aligned first, then wedge blocks need to be installed, and then adjustments need to be made. The operation steps are cumbersome and inefficient. Utility Model Content

[0004] The present invention aims to provide a welding positioning device for steel arch frame connecting plates, so as to provide a positioning device that is accurate and capable of rapid positioning.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: a welding positioning device for steel arch frame connecting plates, comprising two sets of fixing mechanisms and connecting components. Each fixing mechanism includes a fixing rod, a bidirectional threaded screw, a limiting rod, and two clamps for clamping the I-beam. Two ear plates are symmetrically provided at both ends of the lower surface of the fixing rod. The two ends of the limiting rod are fixedly connected to the two ear plates respectively. The two ends of the bidirectional threaded screw are rotatably connected to the two ear plates respectively. A rotating mechanism for driving the bidirectional threaded screw to rotate is also provided. The surface of the bidirectional threaded screw is symmetrically provided with threads of opposite directions. The two clamps are symmetrically arranged on both sides of the bidirectional threaded screw. Each clamp has a threaded hole that can be threadedly connected to the bidirectional threaded screw and a sliding hole that slides with the limiting rod. Both ends of the fixing rod are respectively connected to the two ends of the other fixing rod through a connecting component. The connection between the fixing rod and the connecting component is hinged. A positioning element for positioning is provided on the surface of one fixing rod facing away from the other fixing rod.

[0006] The beneficial effects of this plan are: A rotating mechanism drives a bidirectional threaded screw to rotate, causing clamps on both sides of the screw to slide synchronously. Each clamp has threaded holes that slide with the bidirectional threaded screw. A limiting rod passes through the sliding hole to limit the sliding direction of the clamps. By rotating the bidirectional threaded screw, the clamps on both sides move synchronously, bringing the fixing rod with positioning elements close to the end of the I-beam. Two fixing mechanisms and a connecting assembly are set up, with each end of the connecting assembly rotatably connected to the end of a fixing rod. The two fixing mechanisms are connected using the connecting assembly. In use, the two fixing mechanisms are placed on the I-beam, and by rotating the rotating assembly, the clamps of the two fixing mechanisms move in opposite directions, achieving clamping and fixing with the I-beam and releasing after processing. By setting up two sets of fixing mechanisms, bidirectional positioning constraints are achieved in the axial direction and planar cut direction of the I-beam, ensuring that the vertical surface of the fixing rod close to the end of the I-beam is parallel to the cut surface of the end of the I-beam as much as possible. Afterward, the connecting plate and positioning elements are positioned and fitted together and then welded to the cut surface of the I-beam for fixation.

[0007] Driven by the rotating mechanism, the clamp can move or tighten evenly to both sides simultaneously, effectively avoiding the offset error caused by traditional unilateral adjustment, improving the symmetry of I-beam clamping and the accuracy of positioning. The sliding hole fit structure between the limit rod and the clamp ensures that the clamp slides only in the predetermined direction, preventing lateral swaying during movement, thereby further improving the stability and reliability of positioning.

[0008] Preferably, as an improvement, it also includes a handle, the two ends of which are rotatably connected to the upper surfaces of a fixed rod and another fixed rod, respectively, and the length of the connecting assembly can be adjusted.

[0009] The beneficial effects are as follows: by adjusting the length of the connecting components, the device can adapt to I-beam components with different curvatures. When connecting curved or arc-shaped steel arch frame units, one side of the connecting components can be appropriately extended while the other side is shortened accordingly, thereby achieving synchronous bending of the overall shape of the device. This allows a fixing mechanism to accurately fit the end curve of the I-beam. The handles facilitate the operation of the two fixing components and make it easy to hold.

[0010] Preferably, as an improvement, the connecting components all include a first connecting rod and a second connecting rod. The end of the second connecting rod near the first connecting rod is provided with a slide bar. The surface of the first connecting rod relative to the slide bar is provided with a sliding cavity for the slide bar to slide into. The first connecting rod is also provided with a limiting member that can fix the slide bar.

[0011] The beneficial effects are as follows: the structure enables the connecting components to have good telescopic adjustment capabilities. When the device is applied to a steel arch frame unit with a certain curvature, the telescopic length on both sides of the connecting components can be adjusted to make the whole device fit and match the arc-shaped I-beam, ensuring that the positioning plane and the mounting surface of the connecting plate remain parallel.

[0012] Preferably, as an improvement, the limiting element is a fastening bolt, and the first connecting rod has a threaded hole that mates with the fastening bolt, so that the fastening bolt can rotate and abut against the sliding rod.

[0013] The beneficial effects are as follows: When in use, the slide rod is inserted into the sliding cavity of the first connecting rod for telescopic adjustment. After adjustment to the required length, the fastening bolt is rotated so that its end abuts against the surface of the slide rod, thereby locking the slide rod in the sliding cavity and preventing axial slippage during use. It can efficiently realize the positioning and locking function of the connecting components and is suitable for rapid adjustment of multiple batches and sizes of steel arch frame units on site.

[0014] Preferably, as an improvement, the rotating mechanism includes a rotating disk and a rotating handle disposed on the rotating disk, with one end of a bidirectional threaded screw passing through an ear plate and fixedly connected to the rotating disk.

[0015] The beneficial effects are as follows: when the operator rotates the handle, it drives the rotating disk to rotate, thereby driving the bidirectional threaded screw fixedly connected to it to rotate synchronously, thus realizing the synchronous inward or outward movement of the clamps on both sides of the threaded screw. The rotating mechanism is reasonably designed and easy to operate. It can greatly improve the efficiency of screw rotation and the labor-saving effect by applying force through the handle. It is especially suitable for the operation needs of frequent clamping and loosening on the construction site.

[0016] Preferably, as an improvement, when two clamps on the same fixing mechanism are adjacent, they are in the shape of a trapezoid with the top side longer than the bottom side, and the bottom angles of the two clamps facing away from each other are rounded to transition with the I-beam.

[0017] The beneficial effects are as follows: the bottom corner of the two clamps on opposite sides is provided with an arc transition structure that matches the outline of the I-beam. The arc segment fits into the flange or web end of the I-beam, forming good contact between the mating surfaces, which enhances the compatibility between the clamps and the I-beam, improves the stability of the positioning device during the clamping process, and avoids problems such as slippage and misalignment caused by insufficient contact area in traditional flat clamps.

[0018] Preferably, as an improvement, the positioning element includes two positioning rods for positioning with the connecting plate, the ends of which are fixed to the fixing rod.

[0019] The beneficial effects are as follows: In order to achieve rapid and accurate positioning of the connecting plate at the end of the I-beam, the positioning component in this utility model is set as two positioning rods for cooperating with the connecting plate for positioning. The two positioning rods are arranged in parallel to each other, and their ends are fixedly connected to the fixing rod near the end of the I-beam.

[0020] Preferably, as an improvement, there are two limiting rods, which are distributed on both sides of the bidirectional threaded screw.

[0021] The beneficial effects are: the clamp is subjected to symmetrical force during movement, and will not have problems such as offset, tilting or jamming due to unilateral force or unstable guidance, which greatly improves the smoothness of movement and repeatability of positioning during clamping. Attached Figure Description

[0022] Figure 1 This is a side view of an embodiment of the present utility model; Figure 2 This is a cross-sectional view of the fixing rod according to an embodiment of the present utility model; Figure 3 This is a schematic diagram of the structure of the connecting component in an embodiment of the present utility model; Figure 4 This is a top view of an embodiment of the present utility model.

[0023] The reference numerals in the accompanying drawings include: 1. Fixed rod; 2. Bidirectional threaded screw; 3. Limiting rod; 4. Clamp; 5. Ear plate; 6. Handle; 7. First connecting rod; 8. Sliding cavity; 9. Second connecting rod; 10. Slide rod; 11. Fastening bolt; 12. Rotating disk; 13. Rotating handle; 14. Positioning rod; 15. I-beam. Detailed Implementation

[0024] The following detailed description is provided through specific implementation methods and examples: The preferred embodiments of this utility model are basically as shown in the appendix. Figure 1-4 As shown, Figure 1 and Figure 4The steel arch frame connecting plate welding positioning device shown includes two sets of fixing mechanisms and connecting components. Each fixing mechanism includes a fixing rod 1, a bidirectional threaded screw 2, a limiting rod 3, and two clamps 4 for securing the I-beam 15. Two ear plates 5 are symmetrically provided at both ends of the lower surface of the fixing rod 1. The two ends of the limiting rod 3 are respectively fixedly connected to the two ear plates 5. Figure 2 As shown, there are two limit rods 3, which are distributed on both sides of the bidirectional threaded screw 2. The clamp 4 is subjected to symmetrical force during movement, and will not have problems such as offset, tilting or jamming due to unilateral force or unstable guidance. This greatly improves the smoothness of movement and repeatability of the clamp 4 during clamping.

[0025] The two ends of the bidirectional threaded screw 2 are rotatably connected to the two ear plates 5 respectively. The rotatable connection can take various forms, such as circular hole groove limiting rotation, etc. In this utility model, bearings are used for the rotatable connection to ensure smooth rotation. A rotating mechanism for driving the bidirectional threaded screw 2 is also provided. In order to make the structure simple, reliable and easy to assemble, the preferred embodiment of this utility model is that the rotating mechanism includes a rotating disk 12 and a rotating handle 13 set on the rotating disk 12. One end of the bidirectional threaded screw 2 passes through the ear plate 5 and is fixedly connected to the rotating disk 12. When the operator rotates the rotating handle 13, it drives the rotating disk 12 to rotate, thereby driving the bidirectional threaded screw 2 fixedly connected to it to rotate synchronously, thereby realizing the synchronous inward or outward movement of the clamps 4 on both sides of the threaded screw. This rotating mechanism is reasonably designed and easy to operate. It can greatly improve the efficiency of screw rotation and the labor-saving effect by applying force through the handle. It is especially suitable for the operation needs of frequent clamping and loosening on the construction site.

[0026] The surface of the bidirectional threaded screw 2 is symmetrically provided with threads of opposite directions. Two clamps 4 are symmetrically arranged on both sides of the bidirectional threaded screw 2. Each clamp 4 has a threaded hole that can be threadedly connected to the bidirectional threaded screw 2 and a sliding hole that can slide with the limiting rod 3. Both ends of the fixed rod 1 are respectively connected to the two ends of the other fixed rod 1 through a connecting component. The connection between the fixed rod 1 and the connecting component is a rotatable connection. The rotatable connection can take various forms, such as hinge or setting a rotating shaft. In this utility model, a hinge is selected. The surface of one fixed rod 1 facing away from the other fixed rod 1 is provided with a positioning element for positioning. In this utility model, the positioning element includes two positioning rods 14 for positioning with the connecting plate. The ends of the positioning rods 14 are fixed to the fixed rod 1. In this utility model, the positioning element is set as two positioning rods 14 for positioning with the connecting plate. The two positioning rods 14 are arranged parallel to each other, and their ends are fixedly connected to the fixed rod 1 near the end of the I-beam 15.

[0027] The rotating mechanism drives the bidirectional threaded screw 2 to rotate, causing the clamps 4 located on both sides of the bidirectional threaded screw 2 to slide synchronously. Each clamp 4 has a threaded hole that slides with the bidirectional threaded screw 2. The limiting rod 3 passes through the sliding hole to limit the sliding direction of the clamp 4. By rotating the bidirectional threaded screw 2, the clamps 4 located on both sides of it move synchronously, bringing the fixing rod 1 with the positioning element close to the end of the I-beam 15. Two fixing mechanisms and connecting components are set up, and both ends of the connecting components are rotatably connected to the end of a fixing rod 1. Through the above setup, the connecting components are used to fix the two The fixing mechanisms are connected. During use, the two fixing mechanisms are placed on the I-beam 15. By rotating the rotating assembly, the clamps 4 of the two fixing mechanisms are moved in opposite directions to achieve the clamping and fixing with the I-beam 15 and the release after processing. By setting two sets of fixing mechanisms, bidirectional positioning constraints are achieved in the axial direction and the plane cut direction of the I-beam 15. This ensures that the vertical surface of the fixing rod 1 near the end of the I-beam 15 is parallel to the cut surface of the end of the I-beam 15 as much as possible. After that, the connecting plate and the positioning part are positioned and fitted together and then welded to the cut surface of the I-beam 15 for fixation.

[0028] Driven by the rotating mechanism, the clamp 4 can move or tighten evenly to both sides at the same time, effectively avoiding the offset error caused by traditional unilateral adjustment, improving the symmetry of clamping the I-beam 15 and the accuracy of positioning. The sliding hole fit structure between the limit rod 3 and the clamp 4 can ensure that the clamp 4 slides only in the predetermined direction, preventing it from swaying laterally during movement, thereby further improving the stability and reliability of positioning.

[0029] To ensure a simple, reliable, and easy-to-assemble structure, the preferred embodiment of this invention further includes a handle 6. Both ends of the handle 6 are rotatably connected to the upper surfaces of one fixed rod 1 and another fixed rod 1, respectively. The length of the connecting assembly is adjustable, and the length adjustment can take various forms, such as a telescopic rod. To achieve a simple, reliable, and easy-to-assemble structure, the preferred embodiment of this invention is as follows: Figure 3As shown, the connecting components all include a first connecting rod 7 and a second connecting rod 9. The end of the second connecting rod 9 near the first connecting rod 7 is provided with a sliding rod 10. The surface of the first connecting rod 7 relative to the sliding rod 10 is provided with a sliding cavity 8 for the sliding rod 10 to slide into. The first connecting rod 7 is also provided with a limiting member that can fix the sliding rod 10. This structure enables the connecting components to have good telescopic adjustment capability. When the device is applied to a steel arch frame unit with a certain curvature, the telescopic length on both sides of the connecting components can be adjusted to make the whole device fit and match the arc-shaped I-beam 15, ensuring that the positioning plane is parallel to the mounting surface of the connecting plate. There are many forms of limiting components, such as buckles. To make the structure simple, reliable, and easy to assemble, the preferred embodiment of this utility model is that the limiting component is a fastening bolt 11. The first connecting rod 7 has a threaded hole that mates with the fastening bolt 11. The fastening bolt 11 can rotate to abut against the sliding rod 10. In use, the sliding rod 10 is inserted into the sliding cavity 8 of the first connecting rod 7 for extension and retraction adjustment. When the required length is reached, the fastening bolt 11 is rotated so that its end abuts against the surface of the sliding rod 10, thereby locking the sliding rod 10 in the sliding cavity 8 and preventing axial slippage during use. This can efficiently realize the positioning and locking function of the connecting components and is suitable for rapid adjustment of multiple batches and sizes of steel arch frame units on site.

[0030] To ensure a simple, reliable, and easy-to-assemble structure, the preferred embodiment of this invention is as follows: when two clamps 4 on the same fixing mechanism are adjacent, they form a trapezoidal shape with the top side longer than the bottom side. The bottom corners of the two clamps 4 facing away from each other are rounded to transition with the I-beam 15. The bottom corners on opposite sides of the two clamps 4 are provided with a rounded transition structure that matches the contour of the I-beam 15. This rounded segment fits against the flange or web end of the I-beam 15, forming good contact between the mating surfaces. This enhances the compatibility between the clamps 4 and the I-beam 15, improves the stability of the positioning device during the clamping process, and avoids problems such as slippage and misalignment caused by insufficient contact area in traditional planar clamps 4.

[0031] The above descriptions are merely embodiments of this utility model. Commonly known technical solutions and / or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solution of this utility model. These modifications and improvements should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A welding positioning device for steel arch frame connecting plates, comprising two sets of fixing mechanisms and connecting components, wherein each fixing mechanism includes a fixing rod (1), a bidirectional threaded screw (2), a limiting rod (3), and two clamps (4) for clamping the I-beam (15), characterized in that: Two ear plates (5) are symmetrically provided at both ends of the lower surface of the fixed rod (1). The two ends of the limiting rod (3) are fixedly connected to the two ear plates (5) respectively. The two ends of the bidirectional threaded screw (2) are rotatably connected to the two ear plates (5) respectively. A rotating mechanism for driving the bidirectional threaded screw (2) to rotate is also provided. The surface of the bidirectional threaded screw (2) is symmetrically provided with threads of opposite directions. Two clamps (4) are symmetrically provided on both sides of the bidirectional threaded screw (2). The clamps (4) are provided with threaded holes that can be threadedly connected to the bidirectional threaded screw (2) and sliding holes that can slide with the limiting rod (3). The two ends of one fixed rod (1) are respectively connected to the two ends of the other fixed rod (1) through a connecting component. The connection between the fixed rod (1) and the connecting component is hinged. The surfaces of one fixed rod (1) and the other fixed rod (1) opposite to each other are provided with positioning components for positioning.

2. The steel arch frame connecting plate welding positioning device according to claim 1, characterized in that: It also includes a handle (6), the two ends of which are rotatably connected to the upper surfaces of a fixed rod (1) and another fixed rod (1), respectively, and the length of the connecting assembly can be adjusted.

3. The steel arch frame connecting plate welding positioning device according to claim 2, characterized in that: The connecting components all include a first connecting rod (7) and a second connecting rod (9). The end of the second connecting rod (9) near the first connecting rod (7) is provided with a slide rod (10). The surface of the first connecting rod (7) relative to the slide rod (10) is provided with a sliding cavity (8) for the slide rod (10) to slide into. The first connecting rod (7) is also provided with a limiting member that can fix the slide rod (10).

4. The steel arch frame connecting plate welding positioning device according to claim 3, characterized in that: The limiting component is a fastening bolt (11). The first connecting rod (7) has a threaded hole that mates with the fastening bolt (11). After the fastening bolt (11) rotates, it can abut against the sliding rod (10).

5. The steel arch frame connecting plate welding positioning device according to claim 1, characterized in that: The rotating mechanism includes a rotating disk (12) and a rotating handle (13) set on the rotating disk (12). One end of the bidirectional threaded screw (2) passes through the ear plate (5) and is fixedly connected to the rotating disk (12).

6. The steel arch frame connecting plate welding positioning device according to claim 1, characterized in that: When two clamps (4) on the same fixed mechanism are adjacent, they form a trapezoidal shape with the top side longer than the bottom side. The bottom corners of the two clamps (4) facing away from each other are rounded to match the I-beam (15).

7. The steel arch frame connecting plate welding positioning device according to claim 1, characterized in that: There are two limit rods (3), which are distributed on both sides of the bidirectional threaded screw (2).

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