A welding auxiliary tool for a three-dimensional steel structure frame

Abstract

The present application relates to the technical field of steel structure welding, and particularly discloses a welding auxiliary tool for a three-dimensional steel structure frame, which comprises a base, a bottom clamping mechanism being slidably arranged in a sliding groove of the base, a top plate being installed on the two sides of the base through a vertical rod, a top clamping mechanism being sleeved on the top plate, a bidirectional screw rod being arranged between the vertical rods, nuts being arranged on the two sections of reverse threads of the bidirectional screw rod, the nuts being hinged to the top plate through a connecting rod I, and the top plate and the top clamping mechanism being integrally lifted by rotating the screw rod. The three-dimensional positioning structure with multiple degrees of freedom can be adjusted by cooperating the bottom clamping with the liftable top clamping, and the three-dimensional frame can be synchronously clamped in multiple points and multiple directions.

Description

Technical Field

[0001] This invention relates to the field of steel structure welding technology, and specifically to a welding auxiliary tooling for a three-dimensional steel structure frame. Background Technology

[0002] In the welding of steel frame structures, multiple profiles or pipes must first be accurately positioned and temporarily fixed in three-dimensional space before welding. Currently, a common practice is to rely on manual marking, using simple shims, jacks, or manual clamps to build temporary supports. Operators must repeatedly measure and adjust the relative positions and heights of each component to control the overall dimensional accuracy of the frame. This method is not only inefficient, but the components are also prone to deformation due to heat during welding. Temporary supports often provide only limited and unstable constraints, easily leading to decreased welding accuracy and even requiring post-weld correction.

[0003] For the positioning requirements of welding three-dimensional frames, most companies in the industry still use a combination of multiple independent planar clamps or supports. By adjusting the position and support height of each clamp on the base, an attempt is made to clamp the three-dimensional components using a multi-point contact method.

[0004] This type of combination scheme still has significant shortcomings in practical applications: multiple clamps are adjusted independently, lacking a linkage mechanism for overall height adjustment, making it difficult to quickly unify the clamping points on the upper part of the frame to the same horizontal height, and the clamping process is cumbersome and the accuracy depends on manual experience. Summary of the Invention

[0005] The purpose of this invention is to provide a welding auxiliary tooling for a three-dimensional steel structure frame to solve the problems in the prior art.

[0006] To solve the above-mentioned technical problems, the present invention specifically provides the following technical solution: A welding auxiliary fixture for a three-dimensional steel structure frame includes a base with at least one groove on the base. A slider is slidably disposed in the groove, and a bottom clamping mechanism is detachably mounted on the slider. A top plate is mounted on the upper sides of the base via uprights, and at least one top clamping mechanism is fitted onto the top plate. A bidirectional lead screw is vertically mounted in the middle of the two uprights. The bidirectional lead screw consists of two threaded rods of the same length but with opposite thread directions. Nuts are fitted onto the two opposite threaded rods of the bidirectional lead screw, and the two nuts are rotatably connected to the top plate via two connecting rods. Rotating the bidirectional lead screw causes the two nuts to move relative to each other, which in turn drives the top plate to move up and down via the connecting rods, thereby allowing the top clamping mechanism to move up and down.

[0007] The bottom clamping mechanism includes a positioning block with a positioning groove. One side wall of the positioning groove is a fixed baffle, and a movable push plate is provided on the other side opposite to the baffle. The push plate is rotatably connected to the end of a transverse screw via a bearing. The transverse screw engages with a threaded hole on the positioning block. Rotating the transverse screw causes the push plate to reciprocate back and forth. A vertical screw is vertically arranged above the positioning block, and a positioning nut is sleeved on the vertical screw. An extension plate is arranged along the positioning groove of the positioning nut, and a positioning post is arranged below the extension plate.

[0008] The base has a square frame structure, and a cross-shaped bracket is fixedly installed in the center of the square frame. The cross-shaped bracket is formed by the cross connection of horizontal support arms and vertical support arms, and the two ends of the horizontal support arms and the two ends of the vertical support arms are respectively connected to the middle of the four inner side walls of the square frame.

[0009] The cross-shaped bracket divides each side of the square frame into two side segments, and the cross-shaped bracket itself is divided into four support arm segments by its central intersection point. The grooves are provided on both the side line segment and the support arm line segment.

[0010] The slider and the positioning block are detachably connected, and the detachable connection can be any one of bolt connection, snap-fit ​​connection, pin connection or magnetic connection.

[0011] The top clamping mechanism includes a movable block, and the movable block has a through hole in the middle that matches the cross-section of the top plate. Vertical plates are vertically arranged on both the upper and lower sides of the movable block. The top of the vertical plate has an inclined surface and the inclined surface is connected to a clamping part by a spring. The middle part of the vertical plate is connected to the middle part of the clamping part by a connecting rod.

[0012] In its natural state, the spring applies a supporting force to the clamping part, causing the upper and lower clamping parts to form a natural clamping state. When clamping steel, the clamping part is opened, the spring is compressed, and the supporting force it applies to the clamping part increases accordingly.

[0013] One end of the connecting rod is fixedly connected to the middle of the vertical plate, and the other end is hinged to the middle of the clamping part.

[0014] One end of each of the two connecting rods is hinged to the nut, and the other end is hinged to the bottom of the top plate.

[0015] Two sliding grooves are opened on the upright, and sliding rods are slidably inserted into the two sliding grooves of the upright.

[0016] Compared with the prior art, the present invention has the following advantages: By setting multiple sliding grooves and sliders on the base to form a bottom clamping mechanism, and combining it with an adjustable top plate driven by a two-way screw and linked by a connecting rod, and multiple top clamping mechanisms, a multi-degree-of-freedom adjustable three-dimensional positioning structure is formed. This not only realizes the fixing and clamping of planar welding, but also realizes the clamping of three-dimensional steel structure frames at multiple points and in multiple directions. Attached Figure Description

[0017] To more clearly illustrate the embodiments of the present invention or the technical solutions in 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 merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0018] Figure 1 This is a three-dimensional schematic diagram of the overall structure provided in an embodiment of the present invention; Figure 2 This is a top view of the overall structure provided in an embodiment of the present invention; Figure 3 This is a side view of the overall structure provided in an embodiment of the present invention; Figure 4 Provided for embodiments of the present invention Figure 1 Enlarged view of part A; Figure 5 Provided for embodiments of the present invention Figure 1 Enlarged view of part B; The labels in the diagram represent the following: 1. Base; 2. Slide groove; 3. Slider; 4. Bottom clamping mechanism; 5. Upright rod; 6. Two-way lead screw; 7. Nut; 8. Connecting rod one; 9. Slide rod; 10. Top plate; 11. Top clamping mechanism; 12. Cross-shaped bracket; 401. Positioning block; 402. Positioning groove; 403. Baffle; 404. Horizontal screw; 405. Push plate; 406. Vertical screw; 407. Positioning nut; 408. Extension plate; 409. Positioning post; 1101. Moving block; 1102. Through hole; 1103. Vertical plate; 1104. Connecting rod 2; 1105. Spring; 1106. Clamping part. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] like Figures 1 to 5 As shown, the present invention provides a welding auxiliary tooling for a three-dimensional steel structure frame, including a base 1, at least one groove 2 is provided on the base 1, a slider 3 is slidably arranged in the groove 2, and a bottom clamping mechanism 4 is detachably installed on the slider 3.

[0021] To provide a variety of clamping positions, such as Figure 2 The base 1 is set as a square frame structure. A cross-shaped bracket 12 is fixedly set in the center of the square frame. The cross-shaped bracket 12 is formed by the cross connection of the horizontal support arm and the vertical support arm. The two ends of the horizontal support arm and the two ends of the vertical support arm are respectively connected to the middle of the four inner side walls of the square frame. The cross-shaped bracket (12) divides each side of the square frame into two side segments. The cross-shaped bracket (12) itself is divided into four support arm segments by its central intersection point. The sliding groove 2 is opened on the side segments and the support arm segments.

[0022] Multiple sliding grooves 2 are distributed radially from the center and around the periphery, allowing the slider 3 and the bottom clamping mechanism 4 to be adjusted in a wide range and in multiple directions within the plane of the base 1 to accommodate bottom components of steel structure frames of different specifications.

[0023] The slide groove 2 is preferably a T-shaped groove or a dovetail groove, and the cross-sectional shape of the slider 3 is adapted to the groove shape of the slide groove 2 to ensure smooth sliding and prevent it from coming off. A threaded hole can also be provided on the slider 3, into which a locking screw (not shown in the figure) is installed. When the position needs to be adjusted, the locking screw is loosened, and the slider 3 can slide along the slide groove 2; after moving to the predetermined position, the locking screw is tightened, and the lower end of the locking screw passes through the slider and abuts against the bottom surface of the slide groove 2, thus locking the slider 3 in any position within the slide groove 2, achieving the positioning and fixation of the bottom clamping mechanism 4 within the base plane.

[0024] In this embodiment, the slider 3 and the bottom clamping mechanism 4 are connected in a detachable manner. The detachable connection can be any one of bolt connection, snap-fit ​​connection, pin connection or magnetic connection, which makes it easy to quickly change the bottom clamping mechanism 4 of different specifications according to the shape of the workpiece.

[0025] Specifically, such as Figure 5The bottom clamping mechanism 4 includes a positioning block 401 with a positioning groove 402. One side wall of the positioning groove 402 forms a fixed baffle 403, and a movable push plate 405 is provided on the opposite side of the baffle 403. The push plate 405 is rotatably connected to the end of a transverse screw 404 via a bearing. The transverse screw 404 engages with a threaded hole on the positioning block 401. Rotating the transverse screw 404 causes the push plate 405 to reciprocate back and forth, clamping the workpiece sidewall horizontally in conjunction with the baffle 403. The positioning block 401 has a through hole with internal threads, which engages with the transverse screw 404. The push plate 405 is rotatably connected to the end of the transverse screw 404 via a bearing, ensuring that the push plate 405 only moves linearly without further rotation when the transverse screw 404 is rotated.

[0026] In addition, a vertical screw 406 is vertically arranged above the positioning block 401. The lower end of the vertical screw 406 is rotatably mounted on the positioning block 401 via a bearing, and the vertical screw 406 and the positioning block 401 are axially fixed relative to each other. The top end of the vertical screw 406 is provided with a handle or hexagonal head for easy screwing. A positioning nut 407 is fitted on the vertical screw 406. An extension plate 408 is arranged along the positioning groove 402 of the positioning nut 407. A positioning post 409 is arranged below the extension plate 408. An elastic anti-slip pad is fixed to the lower end face of the positioning post 409. The elastic anti-slip pad is made of polyurethane or rubber material to increase friction and avoid damaging the surface of the workpiece. Rotating the positioning nut 407 can drive the extension plate 408 and the positioning post 409 to move up and down, pressing the workpiece from above, and forming a three-dimensional bottom fixation in conjunction with the horizontal clamping.

[0027] The bottom clamping mechanism 4, through bidirectional adjustment of the horizontal screw 404 and the vertical screw 406, enables the workpiece to obtain stable constraint within the positioning groove 402, and the entire bottom clamping mechanism can slide along the slide groove 2 with the slider 3, realizing clamping at any point in the base plane.

[0028] For clamping and height adaptation of the upper part of the frame, a top plate 10 is installed on the upper sides of the base 1 via uprights 5, and at least one top clamping mechanism 11 is sleeved on the top plate 10.

[0029] Specifically, such as Figure 4The top clamping mechanism 11 includes a movable block 1101. A set screw (not shown in the figure) can be installed on the side wall of the movable block 1101. Tightening the set screw can lock the movable block 1101 to any horizontal position on the top plate 10. A through hole 1102 matching the cross-section of the top plate 10 is opened in the middle of the movable block 1101 to realize horizontal position adjustment. Vertical plates 1103 are vertically arranged on the upper and lower sides of the movable block 1101. The top of the vertical plate 1103 has an inclined surface, and the inclined surface is connected to the clamping part 1106 through a spring 1105. The spring 1105 is a compression spring, one end of which is fixed to the inclined surface at the top of the vertical plate 1103, and the other end is fixed to the outer side of the clamping part 1106. In the free state, the upper and lower clamping parts 1106 tend to close together. The middle part of the vertical plate 1103 is connected to the middle part of the clamping part 1106 via a second connecting rod 1104. One end of the second connecting rod 1104 is fixedly connected to the middle part of the vertical plate 1103, and the other end is hinged to the middle part of the clamping part 1106.

[0030] In use, the clamping part 1106 can be pulled outward to overcome the spring force and open it. After the component is placed in, it can be released, and the clamping part will adaptively hold the component under the action of the spring.

[0031] Furthermore, the clamping part 1106 is an arc-shaped clamping arm or a rectangular clamping arm, etc., and its inner clamping surface is processed with anti-slip texture or pasted with anti-slip pads, which are rubber pads or polyurethane pads.

[0032] In its natural state, spring 1105 applies a supporting force to clamping part 1106, causing the upper and lower clamping parts 1106 to form a natural clamping state. When clamping steel, the component is pushed between the upper and lower clamping parts 1106, the clamping parts 1106 are spread open, and the clamping parts open outward around the hinge point of connecting rod 1104, causing spring 1105 to contract. Spring 1105 is compressed, and the supporting force it applies to clamping part 1106 increases accordingly, making the clamping tighter. Under the combined action of spring 1105 and connecting rod 1104, clamping part 1106 can adapt to the thickness of steel and maintain stable clamping. The symmetrical arrangement of the upper and lower parts can hold the uprights or beams of the frame from two directions. In conjunction with the bottom clamping mechanism 4, it realizes multi-point and multi-directional three-dimensional clamping of the three-dimensional steel structure frame, preventing displacement and deformation during the welding process.

[0033] To accommodate frames of varying heights, such as Figure 3A bidirectional lead screw 6 is vertically installed at the middle of the two uprights 5. The bidirectional lead screw 6 consists of two threaded rods of the same length but with opposite thread directions. Nuts 7 are respectively fitted on the two opposing threaded rods of the bidirectional lead screw 6. The two nuts 7 are rotatably connected to the top plate 10 through two connecting rods 8. One end of the two connecting rods 8 is hinged to the nut 7, and the other end is hinged to the bottom of the top plate 10. Rotating the bidirectional lead screw 6 causes the two nuts 7 to move relative to each other, which in turn drives the top plate 10 to move up and down through the connecting rods 8, thereby allowing the top clamping mechanism 11 to move up and down.

[0034] To further enhance guidance and support, two sliding grooves are opened on the uprights 5, and sliding rods 9 are slidably inserted into the two sliding grooves of the uprights 5. The lower end of the sliding rod 9 is inserted into the sliding groove of the upright 5, and its upper end is fixedly connected to the top plate 10, thereby forming a telescopic upright structure to assist in guiding the vertical movement of the top plate 10.

[0035] During the specific welding operation, firstly, according to the bottom outline of the three-dimensional steel structure frame to be welded, multiple bottom clamping mechanisms 4 are slid along each slide groove 2 to the set position and locked by sliders 3; the bottom columns or beams of the frame are placed into the corresponding positioning grooves 402 respectively, and the horizontal screw 404 and vertical screw 406 are rotated in sequence to fix the bottom components from the horizontal and vertical directions; then, according to the overall height of the frame, the handwheel 9 is turned to adjust the top plate 10 to a suitable height through the double-acting screw 6 and connecting rod 8, and then the top clamping mechanism 11 is slid along the top plate 10 to the position of the column or beam to be clamped, and the clamping part 1106 is opened to make it hold the upper component, thus realizing the multi-point three-dimensional constraint of the entire three-dimensional steel frame, and then the welding operation can be carried out.

[0036] The above embodiments are merely exemplary embodiments of this application and are not intended to limit this application. The scope of protection of this application is defined by the claims. Those skilled in the art can make various modifications or equivalent substitutions to this application within its substance and scope of protection, and such modifications or equivalent substitutions should also be considered to fall within the scope of protection of this application.

Claims

1. A welding auxiliary fixture for a three-dimensional steel structure frame, characterized in that, Includes a base (1), on which at least one groove (2) is provided, and a slider (3) is slidably disposed in the groove (2), and a bottom clamping mechanism (4) is detachably installed on the slider (3); A top plate (10) is installed above both sides of the base (1) via a vertical rod (5), and at least one top clamping mechanism (11) is sleeved on the top plate (10). A bidirectional screw rod (6) is vertically installed in the middle of the two uprights (5). The bidirectional screw rod (6) is composed of two threaded rods of the same length and opposite thread direction. Nuts (7) are respectively fitted on the two reverse threaded rods of the bidirectional screw rod (6). The two nuts (7) are rotatably connected to the top plate (10) through two connecting rods (8). Rotating the bidirectional lead screw (6) causes the two nuts (7) to move relative to each other, and the connecting rod (8) drives the top plate (10) to move up and down, thereby allowing the top clamping mechanism (11) to move up and down.

2. The welding auxiliary tooling for a three-dimensional steel structure frame according to claim 1, characterized in that, The bottom clamping mechanism (4) includes a positioning block (401), on which a positioning groove (402) is opened. One side wall of the positioning groove (402) is formed as a fixed baffle (403), and a movable push plate (405) is provided on the other side opposite to the baffle (403). The push plate (405) is rotatably connected to the end of a transverse screw (404) through a bearing. The transverse screw (404) is engaged with a threaded hole on the positioning block (401). Rotating the transverse screw (404) causes the push plate (405) to reciprocate back and forth. A vertical screw (406) is vertically arranged above the positioning block (401), and a positioning nut (407) is sleeved on the vertical screw (406). An extension plate (408) is arranged on the positioning nut (407) along the direction of the positioning groove (402), and a positioning post (409) is arranged below the extension plate (408).

3. The welding auxiliary tooling for a three-dimensional steel structure frame according to claim 2, characterized in that, The base (1) has a square frame structure. A cross-shaped bracket (12) is fixedly installed in the center of the square frame. The cross-shaped bracket (12) is formed by the cross connection of the horizontal support arm and the vertical support arm. The two ends of the horizontal support arm and the two ends of the vertical support arm are respectively connected to the middle of the four inner side walls of the square frame.

4. The welding auxiliary tooling for a three-dimensional steel structure frame according to claim 3, characterized in that, The cross-shaped bracket (12) divides each side of the square frame into two side segments, and the cross-shaped bracket (12) itself is divided into four support arm segments by its central intersection point. The groove (2) is provided on both the side line segment and the support arm line segment.

5. The welding auxiliary tooling for a three-dimensional steel structure frame according to claim 4, characterized in that, The slider (3) and the positioning block (401) are detachably connected.

6. The welding auxiliary tooling for a three-dimensional steel structure frame according to claim 1, characterized in that, The top clamping mechanism (11) includes a movable block (1101), and the movable block (1101) has a through hole (1102) in the middle that matches the cross-section of the top plate (10). Vertical plates (1103) are vertically arranged on both the upper and lower sides of the movable block (1101). The top of the vertical plate (1103) has an inclined surface and the inclined surface is connected to a clamping part (1106) by a spring (1105). The middle part of the vertical plate (1103) is connected to the middle part of the clamping part (1106) by a connecting rod (1104).

7. The welding auxiliary tooling for a three-dimensional steel structure frame according to claim 6, characterized in that, The spring (1105) applies a supporting force to the clamping part (1106) in its natural state, so that the upper and lower clamping parts (1106) form a natural clamping state. When clamping steel, the clamping part (1106) is opened, the spring (1105) is compressed, and the supporting force it applies to the clamping part (1106) increases accordingly.

8. The welding auxiliary tooling for a three-dimensional steel structure frame according to claim 7, characterized in that, One end of the second connecting rod (1104) is fixedly connected to the middle of the vertical plate (1103), and the other end is hinged to the middle of the clamping part (1106).

9. The welding auxiliary tooling for a three-dimensional steel structure frame according to claim 1, characterized in that, One end of each of the two connecting rods (8) is hinged to the nut (7), and the other end is hinged to the bottom of the top plate (10).

10. The welding auxiliary tooling for a three-dimensional steel structure frame according to claim 1, characterized in that, Two sliding grooves are opened on the upright (5), and a sliding rod (9) is slidably inserted into the two sliding grooves of the upright (5).

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