Full welding tooling of the shell and lock bracket

Abstract

The utility model provides a full welding frock of shell and lock frame belongs to the field of automobile technology. It solved the problem of low positioning effect when shell and lock frame weld. Full welding frock of this shell and lock frame, including work table and set in the work table top block -shaped locating block, the upside of work table has two for passing through the limiting portion of traction cover plate shell's through -hole upward protruding, full welding frock still includes vertical setting rod -shaped pull rod and fixed in drive piece of work table downside, and the lower end of pull rod is connected through connecting rod with drive piece, and drive piece can drive pull rod and move along vertical direction, and the side of locating block has the recessed mouth of along horizontal direction, and the upper end of pull rod passes through the recessed mouth, and the upper end outside of pull rod has the outward protruding annular fender along, and the bottom of locating block has the locating surface for compact traction cover plate lock frame. Full welding frock of this shell and lock frame has the advantage that the positioning effect is good.

Description

Technical Field

[0001] This utility model belongs to the field of automotive technology and relates to a full welding fixture for a housing and a lock frame, and more particularly to a full welding fixture for a saddle-type traction seat for a housing and a lock frame. Background Technology

[0002] With the continuous development of road transportation, road transportation accounts for an increasingly larger proportion of the freight transport sector. Semi-trailers are the main means of freight transportation, and the saddle-type drawbar is the main component connecting the semi-trailer and the tractor, and it is an important component for bearing weight and dynamic loads.

[0003] A saddle-type traction seat generally includes a support at the bottom and a traction cover plate hinged to the upper side of the support. The traction cover plate includes a roughly U-shaped or V-shaped shell and a locking frame fixed to the shell. Two through holes, each a round hole, are vertically oriented through the shell. The locking frame has a hinge hole for the hinge shaft to pass through. The shell is hinged to the support via the locking frame. The shell and locking frame are mostly connected by welding. During welding, it is necessary to maintain the relative position of the shell and locking frame to prevent relative movement that could affect the welding effect and connection stability.

[0004] Currently, when welding the housing and locking frame, the housing is often weighed down by a heavy object or its side is placed against a vertical plane, such as a wall or the side of the equipment. However, this limiting or positioning method can only limit one side of the housing, resulting in poor positioning and lack of effective positioning of the locking frame. This makes welding operations inconvenient and affects welding efficiency. Utility Model Content

[0005] The purpose of this invention is to address the aforementioned problems in the existing technology by proposing a full-welding fixture for the housing and the lock frame, which solves the problem of low positioning effect during the welding of the housing and the lock frame.

[0006] The objective of this utility model can be achieved through the following technical solutions: A full welding fixture for a housing and a locking frame includes a flat, horizontally arranged workbench and a block-shaped positioning block positioned above the workbench. The workbench has two upward-protruding limiting portions on its upper side for passing through through holes in the traction cover housing. The full welding fixture also includes a vertically arranged, rod-shaped pull rod and a driving component fixed to the lower side of the workbench. The lower end of the pull rod is connected to the driving component via a connecting rod, and the upper end of the pull rod passes upward through the workbench. The driving component can drive the pull rod to move vertically. One side of the positioning block has a horizontally recessed through-hole that passes vertically through the positioning block. The upper end of the pull rod passes through the through-hole. The outer side of the upper end of the pull rod has an outwardly protruding, annular retaining edge, which abuts against the upper side of the positioning block when the pull rod moves downward. The bottom of the positioning block has a positioning surface for pressing the traction cover locking frame.

[0007] When using the full welding fixture for the housing and lock frame, first place the housing on the worktable, ensuring that the two limiting parts pass through the two through holes on the housing to position it. The shape and size of the limiting parts match the shape and size of the through holes on the housing, preventing the housing from moving horizontally relative to the worktable after the limiting parts pass through the through holes. Then, place the lock frame between the positioning block and the housing, i.e., below the positioning block and above the housing. The drive unit drives the pull rod downwards, acting on the upper side of the positioning block through the stop edge. The positioning surface at the bottom of the positioning block presses the lock frame downwards, achieving good positioning of both the housing and the lock frame. The horizontally recessed through hole on one side of the positioning block allows the positioning block to be moved horizontally below the stop edge of the pull rod when the lock frame is not positioned, freeing up space below the stop edge for easier insertion of the lock frame.

[0008] In the aforementioned full-welding fixture for the housing and lock frame, the bottom of the positioning block has an upwardly recessed clearance notch that penetrates the positioning block along the recessed direction of the through-hole. When the lock frame is placed on the upper side of the housing, it has an upwardly protruding structure near the pull rod. The clearance notch allows the positioning block to move horizontally towards the pull rod after the lock frame is placed. By utilizing the clearance notch and the protruding structure on the lock frame, the positioning block is not only easily inserted, but the positioning surface is also brought closer to the upper side of the lock frame, resulting in a better clamping and positioning effect.

[0009] In the aforementioned fully welded fixture for the housing and locking frame, the positioning block includes a block-shaped main body and a long, strip-shaped operating part horizontally positioned on the upper side of the main body. Both ends of the operating part are connected to the main body via connecting parts. A mounting opening is formed between the lower side of the operating part and the upper side of the main body, allowing a retaining edge to pass horizontally through. The operating part facilitates horizontal pushing of the positioning block, while the mounting opening provides clearance for the pull rod to engage with the positioning block.

[0010] In the aforementioned fully welded fixture for the housing and lock frame, the middle of the connecting rod is hinged to the lower side of the worktable. The driving component is a cylinder with the piston rod facing upwards. One end of the connecting rod is movably connected to the lower end of the pull rod, and the other end of the connecting rod is movably connected to the end of the piston rod. The hinged middle of the connecting rod forms a lever, which indirectly drives the pull rod to rise and fall. This not only avoids obstructing the lower end of the pull rod when the cylinder is fixed to the lower side of the worktable, facilitating connection, but also allows for the selection of a suitable connecting rod to form a force-saving lever during actual assembly, improving the positioning effect of the lock frame.

[0011] In the aforementioned full-welding fixture for the housing and locking frame, the outer surface of the limiting part is tapered, and the diameter of the tapered surface gradually increases from top to bottom. The tapered surface makes it easier for the limiting part to pass into the through hole of the housing.

[0012] Compared with existing technologies, the full welding fixture for the housing and lock frame uses limiting parts and positioning blocks to position the housing and lock frame respectively, effectively preventing the housing and lock frame from shifting in the horizontal direction, ensuring the positioning effect, and thus ensuring the welding effect of the housing and lock frame. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the shell structure.

[0014] Figure 2 This is a structural diagram of the lock frame.

[0015] Figure 3 This is a schematic diagram of the fully welded fixture for the housing and the locking frame.

[0016] Figure 4 This is a schematic diagram of the positioning block in the full welding fixture of the housing and the locking frame.

[0017] In the figure, 1 is the workbench; 1a is the limiting part; 2 is the positioning block; 2a is the through hole; 2b is the positioning surface; 2c is the clearance notch; 2d is the main body; 2e is the operating part; 2f is the connecting part; 2g is the mounting port; 3 is the pull rod; 3a is the stop edge; 4 is the driving component; 5 is the connecting rod; 6 is the housing; 6a is the through hole; and 7 is the locking frame. Detailed Implementation

[0018] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0019] like Figure 1 As shown, the housing 6 of the traction cover plate is roughly U-shaped or V-shaped. Two through holes 6a, which are round holes, are opened through the housing 6 in the vertical direction, and there is a gap between the two through holes 6a.

[0020] like Figure 2 As shown, the lock frame 7 has a hollowed-out center, and there is an upward protruding structure adjacent to the hollowed-out center. The lock frame 7 has hinge seats on both sides, and the hinge seats have hinge holes for the hinge shaft to pass through. The housing 6 can be hinged to the bracket through the lock frame 7.

[0021] like Figure 3 As shown, the full welding fixture for the housing and the locking frame includes a flat, horizontally arranged worktable 1, a block-shaped positioning block 2 positioned above the worktable 1, a vertically arranged, round rod-shaped pull rod 3, a connecting rod 5 positioned below the worktable 1, and a driving component 4 fixed to the lower side of the worktable 1. The upper side of the worktable 1 has two upwardly protruding limiting portions 1a for passing through through holes 6a on the traction cover housing 6. The outer surface of the limiting portion 1a is a tapered surface, and the diameter of the tapered surface gradually increases from top to bottom. The positioning block 2, the pull rod 3, and the worktable 1 are independent of each other, and there is no connection or fixing relationship between the three.

[0022] The lower end of the pull rod 3 is located below the worktable 1, and the upper end of the pull rod 3 passes upward through the worktable 1. The middle part of the connecting rod 5 is hinged to the lower side of the worktable 1. The driving component 4 is a cylinder with the piston rod facing upward. Both ends of the connecting rod 5 have horizontally penetrating oblong holes. The length direction of the two oblong holes is consistent with the length direction of the connecting rod 5. Fasteners, specifically pins, are horizontally inserted at the oblong holes at both ends of the connecting rod 5. The two pins pass through the lower end of the pull rod 3 and the side of the piston rod, respectively, so that the connecting rod 5 can swing relative to the pull rod 3 and the piston rod. The oblong holes allow the circumferentially swinging connecting rod 5 to make a small horizontal displacement relative to the pull rod 3 and the piston rod during transmission, preventing the transmission from jamming.

[0023] like Figure 4 As shown, the positioning block 2 has a horizontally recessed through-hole 2a on one side, which penetrates the positioning block 2 vertically. The upper end of the pull rod 3 passes through the through-hole 2a. The outer side of the upper end of the pull rod 3 has an outwardly protruding annular retaining edge 3a. When the pull rod 3 moves down, the retaining edge 3a can abut against the upper side of the positioning block 2. The bottom of the positioning block 2 has a positioning surface 2b for pressing the traction cover lock frame 7. In this embodiment, the bottom of the positioning block 2 has an upwardly recessed clearance notch 2c, which penetrates the positioning block 2 along the recessed direction of the through-hole 2a. The positioning block 2 includes a block-shaped main body 2d and a long strip-shaped operating part 2e horizontally disposed on the upper side of the main body 2d. The two ends of the operating part 2e are connected to the main body 2d by connecting parts 2f. The lower side of the operating part 2e and the upper side of the main body 2d, as well as the two connecting parts 2f, together form an installation opening 2g through which the retaining edge 3a can pass horizontally.

[0024] When using the fully welded fixture for the housing and the locking frame, first manually apply force to the operating part 2e to push the operating part 2e and the positioning block 2 to move horizontally away from the side opening of the through-hole 2a, so that the positioning block 2 can be dislodged from below the stop 3a of the pull rod 3 and taken out separately.

[0025] First, place the housing 6 horizontally on the workbench 1, with the bottom surface of the housing 6 abutting against the top surface of the workbench 1. At the same time, make the two limiting parts 1a pass through the two through holes 6a on the housing 6 to achieve the positioning of the housing 6.

[0026] Next, place the lock frame 7 with the hollowed-out center facing the pull rod 3 from top to bottom on the upper side of the housing 6, creating a gap between the top surface of the lock frame 7 and the lower side of the stop 3a. Then, push the positioning block 2 in the opposite direction towards this gap. The clearance notch 2c of the positioning block 2 corresponds to the protruding structural position on the lock frame 7, ensuring that the horizontal pushing process of the positioning block 2 is not obstructed. Continue until the side of the pull rod 3 enters the through-hole 2a, and the stop 3a passes through the mounting opening 2g.

[0027] The piston rod of the drive component 4 pushes upward, and the connecting rod 5, acting as a lever, drives the pull rod 3 downward. Here, to ensure that the pull rod 3 can always move up and down without wobbling, the position on the worktable 1 through which the pull rod 3 passes is a guide hole with a diameter slightly larger than the diameter of the pull rod 3. The stop 3a moves downward and abuts against the upper side of the positioning block 2, applying a downward force to the positioning block 2. The positioning surface 2b at the bottom of the positioning block 2 presses the locking frame 7 downward, thereby achieving the positioning of the housing 6 and the locking frame 7 for welding.

[0028] After welding is completed, the work is reversed so that positioning block 2 can be removed horizontally, and the entire welded workpiece can then be removed upwards.

[0029] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A full welding fixture for a housing and a locking frame, comprising a flat, horizontally arranged worktable (1) and a block-shaped positioning block (2) disposed above the worktable (1), characterized in that, The upper side of the workbench (1) has two upward-protruding limiting parts (1a) for passing through through holes (6a) on the traction cover shell (6). The full welding fixture also includes a vertically arranged rod-shaped pull rod (3) and a driving member (4) fixed to the lower side of the workbench (1). The lower end of the pull rod (3) is connected to the driving member (4) through a connecting rod (5). The upper end of the pull rod (3) passes upward through the workbench (1). The driving member (4) can drive the pull rod (3) to move in the vertical direction. The positioning block (2) has a through-hole (2a) recessed in the horizontal direction on one side. The through-hole (2a) passes through the positioning block (2) in the vertical direction. The upper end of the pull rod (3) passes through the through-hole (2a). The outer side of the upper end of the pull rod (3) has an outwardly protruding annular retaining edge (3a). When the pull rod (3) moves down, the retaining edge (3a) can abut against the upper side of the positioning block (2). The bottom of the positioning block (2) has a positioning surface (2b) for pressing the traction cover lock frame (7).

2. The full welding fixture for the housing and locking frame according to claim 1, characterized in that, The bottom of the positioning block (2) has an upwardly recessed clearance notch (2c), which penetrates the positioning block (2) along the recessed direction of the through opening (2a).

3. The full welding fixture for the housing and locking frame according to claim 1 or 2, characterized in that, The positioning block (2) includes a block-shaped main body (2d) and a strip-shaped operating part (2e) horizontally disposed on the upper side of the main body (2d). The two ends of the operating part (2e) are connected to the main body (2d) by a connecting part (2f). An installation opening (2g) is formed between the lower side of the operating part (2e) and the upper side of the main body (2d) for the stop (3a) to pass through horizontally.

4. The full welding fixture for the housing and locking frame according to claim 1 or 2, characterized in that, The middle part of the connecting rod (5) is hinged to the lower side of the workbench (1). The driving component (4) is a cylinder with the piston rod facing upward. One end of the connecting rod (5) is movably connected to the lower end of the pull rod (3), and the other end of the connecting rod (5) is movably connected to the end of the piston rod.

5. The full welding fixture for the housing and locking frame according to claim 1 or 2, characterized in that, The outer surface of the limiting part (1a) is a conical surface and the diameter of the conical surface gradually increases from top to bottom.

Images