CN220498292U - Rotary welding tool for tower crane slewing bearing - Google Patents

Abstract

The utility model relates to a rotary welding tool for a tower crane rotary support, and belongs to the field of welding clamps for tower crane rotary supports. The welding positioner comprises a welding positioner workbench, wherein a plurality of clamp units are fixedly connected to the table top of the welding positioner workbench, the clamp units are arranged at intervals along the circumferential direction, each clamp unit comprises a clamp base, a clamping screw and a clamping head, a first positioning reference plane and a second positioning reference plane are arranged on two sides of the clamp base, a sliding groove is formed in the middle of the clamp base, two ends of the clamping screw are rotatably arranged at the end parts of the sliding groove, the clamping heads are slidably arranged in the sliding groove, threaded holes matched with the clamping screw are formed in the clamping heads, the clamping heads can be driven to reciprocate along the sliding groove by rotating the clamping screw, the axes of the sliding grooves are arranged along the radial direction of the welding positioner workbench, and the clamping heads are provided with clamping parts which are outwards arranged relative to the second positioning reference plane of the clamp base. The utility model has a large adjusting range and can be suitable for workpieces with different sizes.

Description

Rotary welding tool for tower crane slewing bearing

Technical Field

The utility model relates to a rotary welding tool for a tower crane rotary support, and belongs to the field of welding clamps for tower crane rotary supports.

Background

The slewing bearing is a very important part of the tower crane and is a steel structure welding piece, and the structure has very high welding requirements and uniform and attractive welding seam size.

Referring to fig. 1 and 2, a slewing bearing of a tower crane generally comprises an upper panel, a ring plate, a lower panel and other parts (see the accompanying drawings). The welding of the face plate to the ring plate is particularly important in the machining of swivel supports.

The patent document with the publication number of CN204035902U discloses an electric rotary forming tool for a lower rotary support of a tower crane, which comprises a base, a rotary mechanism arranged on a mounting seat on the base, and a lower rotary support forming device connected with the rotary mechanism; the lower rotary support forming device comprises a forming device main body, a supporting leg connecting shaft arranged on the forming device main body, a main limb connecting shaft arranged on the forming device main body and a positioning clamping shaft arranged in the middle of the forming device main body; the rotating mechanism comprises a rotating motor, a rotary gear and a rotating connecting seat; the rotating motor is connected with the rotary gear and then is arranged on the mounting seat; the rotary connecting seat is fixedly connected with the rotary gear; the forming device main body and the rotary connecting seat are fixedly installed together through a plurality of connecting pin shafts. The tool ensures that each welding position of the lower rotary support is welded at the horizontal position, and ensures the consistency of welding seams to a certain extent. However, the scheme is only suitable for the lower slewing bearing of the tower crane with fixed specifications, and the welding working surface is not at an optimal angle.

In addition, with the progress of the times, more advanced welding positioner is generally adopted in the welding field, but the universal welding positioner cannot directly clamp the tower crane slewing bearing.

Disclosure of Invention

The technical problems to be solved by the utility model are as follows: the rotary welding tool for the tower crane rotary support is simple in structure, convenient to operate and suitable for manufacturing and processing of rotary supports of different specifications.

The technical scheme adopted for solving the technical problems is as follows: the utility model provides a tower machine slewing bearing rotary welding frock, including the welding positioner workstation, fixedly connected with a plurality of anchor clamps units on the mesa of welding positioner workstation, use the gyration center pin of welding positioner workstation as the axis, anchor clamps unit along circumference direction interval arrangement, every anchor clamps unit all includes the anchor clamps base, clamping screw and chuck, the anchor clamps base has first location benchmark plane towards the side terminal surface of welding positioner workstation, the side terminal surface of welding positioner workstation has the second location benchmark plane dorsad, the middle part of anchor clamps base has the spout, the both ends of clamping screw all have polished rod portion, and install at the both ends of spout through polished rod portion rotation, clamping screw disposes limit structure that restricts its axial displacement, chuck slidable mounting is in the spout, the chuck has the screw hole with clamping screw looks adaptation, can drive chuck along spout reciprocating motion through rotating clamping screw, the axis of spout radially sets up along the welding positioner workstation, the chuck has the clamping portion that sets up for the second location benchmark plane evagination of anchor clamps base.

Further preferred are: the jig units are arranged at regular intervals along the circumferential direction.

Further preferred are: the outer end of the clamping part is provided with a limit bulge at one side far away from the center of the workbench of the welding positioner.

Further preferred are: the clamping working surface of the clamping part is provided with a crisscross pattern.

Further preferred are: the table top of the workbench of the welding positioner is fixedly connected with a transition connection platform, and the clamp unit is fixedly connected to the transition connection platform.

The beneficial effects of the utility model are as follows: in the implementation process, the swivel support workpiece is welded into a whole in advance, and then the upper panel or the lower panel of the swivel support workpiece is placed on a second positioning reference plane of the clamp base. The initial state of the clamping head is a position close to the center of a workbench of the welding positioner, after the workpiece of the slewing support is positioned and placed, the clamping head is driven to move in a direction away from the center of the workbench of the welding positioner by rotating the clamping screw, and a plurality of clamping heads simultaneously push against the wall surface of an inner hole of the workpiece of the slewing support, so that clamping and fixing are realized. The tool has a large adjusting range and can be suitable for workpieces with different sizes. In addition, the clamping part is provided with a limiting bulge, so that the workpiece anti-falling effect can be achieved; the crisscross patterns are arranged on the clamping working surface, so that friction force can be increased, and clamping is more reliable. The welding working surface can be rotationally adjusted to the most suitable position by utilizing a driving system of the welding positioner.

Drawings

Fig. 1 is a schematic diagram of the structure of a slewing bearing workpiece in front view.

Fig. 2 is a schematic structural view of a slewing bearing work piece according to the present utility model in a top view.

Fig. 3 is a schematic diagram of the assembly in front view of the present utility model in its practice.

Fig. 4 is a schematic view of the assembly in a top view of the present utility model in practice.

FIG. 5 is a schematic view of the optimal welding angle for the practice of the present utility model.

Fig. 6 is a schematic diagram showing the structure of the jig unit according to the present utility model in the front view.

Fig. 7 is a schematic structural view of the jig unit according to the present utility model in a plan view.

Fig. 8 is a schematic perspective view of a chuck according to the present utility model.

Fig. 9 is a schematic diagram of the chuck according to the present utility model in a front view.

Fig. 10 is a schematic diagram of a chuck according to the present utility model in a side view.

The parts in the figure are marked as follows: the welding positioner workbench 1, a clamp base 21, a clamping screw 22, a clamping head 23, a first positioning reference plane 24, a second positioning reference plane 25, a clamping part 26, a limiting protrusion 27, a crisscross pattern 28, a transitional connecting platform 3, a rotary support workpiece 5, an upper panel 51, a lower panel 52, a ring plate 53, a welding seam 54 and a welding gun 6.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present utility model more clear, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings. It will be apparent that the described embodiments are some, but not all, embodiments of the utility model.

Thus, the following detailed description of the embodiments of the utility model is not intended to limit the scope of the utility model, as claimed, but is merely representative of some embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

As shown in fig. 3 to 10, the welding positioner workbench 1 is included, a plurality of clamp units are fixedly connected to the table top of the welding positioner workbench 1, the clamp units can be fixedly connected by bolts, the clamp units are arranged at intervals along the circumferential direction by taking the rotation center shaft of the welding positioner workbench 1 as a central axis, each clamp unit comprises a clamp base 21, a clamping screw 22 and a clamping head 23, one side end face of the clamp base 21 facing the welding positioner workbench 1 is provided with a first positioning reference plane 24, one side end face of the clamp base facing away from the welding positioner workbench 1 is provided with a second positioning reference plane 25, the middle part of the clamp base 21 is provided with a sliding groove, both ends of the clamping screw 22 are provided with polished rod parts, and are rotatably arranged at both ends of the sliding groove through the polished rod parts, and the clamping screw 22 is provided with a limiting structure which limits the axial movement of the clamping screw 22, namely the clamping screw 22 can only rotate and can not move along the sliding groove; the clamping head 23 is slidably mounted in the chute, the clamping head 23 is provided with a threaded hole matched with the clamping screw 22, the clamping head 23 can be driven to reciprocate along the chute by rotating the clamping screw 22, the axis of the chute is arranged along the radial direction of the welding positioner workbench 1, and the clamping head 23 is provided with a clamping part 26 which is arranged in a protruding manner relative to the second positioning reference plane 25 of the clamp base 21. In practice, the slewing bearing workpiece 5 is spot-welded in advance to be integrated, and then the upper panel 51 or the lower panel 52 thereof is placed on the second positioning reference plane 25 of the jig base 21. The initial state of the clamping heads 23 is that the positions close to the center of the welding positioner workbench 1 (all the clamping heads are positioned on the inner side of a through hole in the center of the rotary support workpiece 5), after the rotary support workpiece 5 is positioned and placed preliminarily, the clamping heads 23 are driven to move in the direction away from the center of the welding positioner workbench 1 by rotating the clamping screw 22, and a plurality of clamping heads 23 simultaneously push against the inner hole wall surface of the rotary support workpiece 5, so that clamping and fixing are realized. The utility model has a large adjusting range and can be suitable for workpieces with different sizes. The present utility model utilizes the drive system of the welding positioner itself to rotatably adjust the welding face to the most appropriate position, and referring to fig. 5, the angle between the workpiece panel and the horizontal plane is approximately 45 ° (this angle is labeled a in the figure).

To make the structure more reliable, the jig units are arranged at uniform intervals along the circumferential direction.

To make the structure more reliable, the outer end portion of the clamping portion 26 is provided with a limit projection 27 on the side away from the center of the welding positioner table 1. The limiting protrusion 27 can perform a limiting and anti-falling function on the workpiece panel attached to the second positioning reference plane 25.

To make the structure more reliable, the clamping face of the clamping portion 26 is provided with a crisscross pattern 28. The crisscross pattern 28 may act to increase friction and provide a more secure grip.

In order to make the application scope wider, a transition connection platform 3 (usually can be fixed by using bolt connection) is fixedly connected to the table top of the welding positioner workbench 1, and the clamp unit is fixedly connected to the transition connection platform 3. When the diameter of the swivel support work piece 5 is large, it is conceivable to add a transitional coupling platform 3.

Claims (5)

1. Tower machine slewing bearing spin welding frock, including welding positioner workstation (1), its characterized in that: a plurality of clamp units are fixedly connected to the table top of the welding positioner workbench (1), the rotation center shaft of the welding positioner workbench (1) is used as a central axis, the clamp units are arranged at intervals along the circumferential direction, each clamp unit comprises a clamp base (21), a clamp screw (22) and a clamp head (23), one side end face of the clamp base (21) facing the welding positioner workbench (1) is provided with a first positioning reference plane (24), one side end face of the clamp base (23) facing away from the welding positioner workbench (1) is provided with a second positioning reference plane (25), the middle part of the clamp base (21) is provided with a sliding groove, two ends of the clamp screw (22) are respectively provided with a polished rod part, the two ends of the sliding groove are rotatably arranged through the polished rod parts, the clamp screw (22) are provided with limiting structures for limiting the axial movement of the clamp screw, the clamp head (23) is slidably arranged in the sliding groove, the clamp head (23) is provided with threaded holes matched with the clamp screw (22), the clamp head (23) can be driven to reciprocate along the sliding groove through rotating the clamp screw (22), the axis of the sliding groove is arranged along the radial direction of the welding positioner workbench (1), the clamp head (23) is provided with a second positioning reference plane (25) opposite to the second positioning reference plane (26) of the clamp base (21).

2. The tower crane slewing bearing spin welding tooling of claim 1, wherein: the jig units are arranged at regular intervals along the circumferential direction.

3. The tower crane slewing bearing spin welding tooling of claim 1, wherein: the outer end part of the clamping part (26) is provided with a limit bulge (27) at one side far away from the center of the welding positioner workbench (1).

4. The tower crane slewing bearing spin welding tooling of claim 1, wherein: the clamping working surface of the clamping part (26) is provided with a crisscross pattern (28).

5. The tower crane slewing bearing spin welding tooling of any one of claims 1 to 4, wherein: the table top of the welding positioner workbench (1) is fixedly connected with a transition connection platform (3), and the clamp unit is fixedly connected to the transition connection platform (3).