Welding fixture for transformer clamp

Abstract

The utility model discloses a welding fixture for a transformer clamping piece, which comprises a base, a side limiting column and an end limiting column which are used for abutting against the transformer clamping piece are arranged on the base, and a fixed push block for pushing the transformer clamping piece to the side limiting column is arranged on the base. A plurality of limiting arms used for positioning reinforcing pieces are hinged to the side, away from the fixing push blocks, of the base, after the side face and the two ends of the transformer clamping piece abut against the corresponding side face limiting columns and the corresponding end limiting columns correspondingly, the transformer clamping piece is fixed to the welding clamp through the fixing push blocks, and after the limiting arms are rotated into C-shaped grooves of the transformer clamping piece, the transformer clamping piece is fixed to the welding clamp through the fixing push blocks. The reinforcing pieces are placed in the C-shaped grooves, the positions of the reinforcing pieces are limited through the limiting arms, finally welding is conducted through the welding mechanical arm, it can be guaranteed that the distances between the reinforcing pieces are equal, and the welding efficiency and quality are effectively improved.

Description

Technical Field

[0001] The utility model relates to a tooling fixture for manufacturing large transformer accessories, in particular to a welding fixture used for transformer clamps. Background Art

[0002] Transformer clamps are mainly used to fix and support the iron core and windings of the transformer to ensure that they maintain a relatively stable position during the operation of the transformer, prevent displacement or loosening due to electromagnetic force, vibration and other factors, so as to maintain the normal electrical and mechanical properties of the transformer. Therefore, they are usually made of metal materials with certain strength and rigidity, such as steel plates. In order to increase the strength of the transformer clamps, the steel plates are generally bent into a "C"-shaped steel structure through a bending process. However, for larger transformers, the strength of the "C"-shaped steel structure is still insufficient. Therefore, the thickness of the steel plate can be increased to improve the strength of the transformer clamps, but the cost is high. In addition, reinforcement sheets can be welded in the "C"-shaped steel structure to increase the strength of the transformer clamps. At present, it is generally welded by workers manually, which requires certain skills of welding workers. At the same time, manual welding will also have problems such as inconsistent spacing of welded reinforcement sheets, which will cause the strength of some positions of the transformer clamps to be excessive and some positions to be insufficient, thereby affecting the overall quality of the transformer clamps. Summary of the invention

[0003] In order to overcome the deficiencies of the prior art, the utility model provides a welding fixture for transformer clamps.

[0004] The technical solution adopted by the utility model to solve its technical problems is:

[0005] A welding fixture for a transformer clamp comprises a base, on which are mounted side limit columns and end limit columns for abutting against the transformer clamp, and on which are mounted fixed push blocks for pushing the transformer clamp toward the side limit columns, and a plurality of limit arms for positioning a reinforcement plate are hinged on a side of the base away from the fixed push block.

[0006] The side limiting columns, the end limiting columns and the fixed push block together form an installation space for accommodating the transformer clamp, and a plurality of padding parts are installed at the bottom of the installation space.

[0007] A plurality of arranged push rod seats are installed on the base, a connecting push rod is slidably installed on one side of the push rod seat close to the fixed push block, the connecting push rod is connected to the fixed push block, a shift block is hingedly provided at the other end of the push rod seat, the shift block is connected to the connecting push rod by a hinged linkage, and when the shift block is shifted, the linkage pulls the connecting push rod to slide.

[0008] Each of the shifting blocks is fixedly connected through a first linkage rod.

[0009] A number of arranged guide rail seats are installed on the base. A guide rail rod, which is arranged in the same sliding direction as the connecting push rod, is slidably installed on the guide rail seat. One end of the guide rail rod is connected to the fixed push block.

[0010] A number of arranged hinge seats are installed on the base. The limiting arm is hinge-mounted on the hinge seat.

[0011] Each of the limiting arms is fixedly connected through a second linkage rod.

[0012] The limiting arm is composed of two clamping pieces. A limiting space for accommodating the reinforcing piece is formed between the clamping pieces.

[0013] The beneficial effects of the present utility model are as follows: On the base of the present utility model, a side limiting post and an end limiting post for abutting against the transformer clamp are installed. A fixed push block for pushing the transformer clamp towards the side limiting post is installed on the base. A number of limiting arms for positioning the reinforcing piece are hinged on one side of the base away from the fixed push block. After the side and both ends of the transformer clamp are abutted against the corresponding side limiting post and end limiting post respectively, the transformer clamp is fixed on the welding fixture through the fixed push block. After the limiting arm is rotated into the "C" - shaped groove of the transformer clamp, the reinforcing piece is placed into the "C" - shaped groove, and its position is restricted by the limiting arm. Finally, welding is carried out through a welding robotic arm, which can ensure that the distance between each reinforcing piece is equal, effectively improving the welding efficiency and quality. Brief Description of the Drawings

[0014] The present utility model will be further described below in conjunction with the drawings and embodiments.

[0015] Figure 1 is one of the structural diagrams of the present utility model (the transformer clamp is not fixed);

[0016] Figure 2 is the second structural diagram of the present utility model (the transformer clamp is fixed);

[0017] Figure 3 is the structural diagram of the transformer clamp. Detailed Description of the Embodiment

[0018] To make the purpose, technical solutions and advantages of the present utility model clearer and more understandable, the present utility model will be further described in detail below in conjunction with the specific embodiments and with reference to the drawings. It should be noted that, without conflict, the embodiments of the present utility model and the features in the embodiments can be combined with each other.

[0019] It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the present utility model.

[0020] Some embodiments of the present utility model will be described below in conjunction with the accompanying drawings.

[0021] Referring to Figures 1-3 , a welding fixture for a transformer clamping piece, including a base 1, on which a side limiting post 2 and an end limiting post 3 for abutting against the transformer clamping piece 4 are installed. A fixed push block 5 for pushing the transformer clamping piece 4 towards the side limiting post 2 is installed on the base 1. A plurality of limiting arms 7 for positioning the reinforcing piece 6 are hinged on one side of the base 1 away from the fixed push block 5. After the sides and both ends of the transformer clamping piece are abutted against the corresponding side limiting post and end limiting post respectively, the transformer clamping piece is fixed on the welding fixture by the fixed push block. After the limiting arm is rotated into the "C" - shaped groove of the transformer clamping piece, the reinforcing piece is placed into the "C" - shaped groove, and its position is restricted by the limiting arm. Finally, welding is carried out by a welding robot arm, which can ensure that the distance between each reinforcing piece is equal, effectively improving the welding efficiency and quality.

[0022] The side limiting post 2, the end limiting post 3 and the fixed push block 5 enclose an installation space for accommodating the transformer clamping piece 4, and a plurality of heightening parts 8 are installed at the bottom of the installation space.

[0023] In this embodiment, the number of both the side limiting post 2 and the end limiting post 3 is 2. The side limiting post 2 abuts against the same side of the transformer clamping piece 4, and the end limiting posts 3 respectively abut against both ends of the transformer clamping piece 4.

[0024] A plurality of arranged first positioning holes 18 are provided along the length of the fixed push block 5. Second positioning holes are provided on the transformer clamping piece 4 corresponding to the first positioning holes 18. A positioning pin passes through the first positioning holes and the second positioning holes. The end limiting post 3 can be used for preliminary positioning, so that the first positioning holes 18, the second positioning holes and the positioning pin are used for secondary positioning, further improving the positioning effect of the transformer clamping piece.

[0025] A plurality of arranged push rod seats 9 are installed on the base 1. A connecting push rod 10 is slidably installed on one side of the push rod seat 9 close to the fixed push block 5. The connecting push rod 10 is connected to the fixed push block 5. The other end of the push rod seat 9 is hinged with a dial block 11. The dial block 11 is connected to the connecting push rod 10 through a linkage member 12. When the dial block 11 is toggled, the linkage member 12 pulls the connecting push rod 10 to slide.

[0026] Each of the shifting blocks 11 is fixedly connected by a first linkage rod 13. When the first linkage rod 13 is shifted, all the shifting blocks 11 will move simultaneously, which can improve the speed of fixing the transformer clamp 4 and enhance the efficiency of the tooling. In addition, multiple connecting push rods 10 can ensure that all positions of the transformer clamp 4 are fixed and positioned, further improving the welding effect.

[0027] A number of arranged guide rail seats 14 are installed on the base 1. A guide rail rod 15 that is consistent with the sliding direction of the connecting push rod 10 is slidably installed on the guide rail seat 14. One end of the guide rail rod 15 is connected to the fixed push block 5, which can further improve the stability and smoothness of the movement of the fixed push block 5, reduce the difficulty of shifting the first linkage rod 13, and thus reduce the labor intensity of workers.

[0028] A number of arranged hinge seats 16 are installed on the base 1. The limiting arm 7 is hingedly installed on the hinge seat 16.

[0029] Each of the limiting arms 7 is fixedly connected by a second linkage rod 17. Similar to the function of the first linkage rod 13, when the second linkage rod 17 is shifted, all the limiting arms 7 will move simultaneously, improving the efficiency of the tooling.

[0030] The limiting arm 7 is composed of two clamping pieces. A limiting space for accommodating the reinforcing piece 6 is formed between the clamping pieces. After placing the limiting arm 7 into the "C"-shaped groove of the transformer clamp, the reinforcing piece 6 is placed into the limiting space, and the positioning and tooling of the reinforcing piece 6 can be completed.

[0031] In addition, the limiting arm 7 can also be composed of a single clamping piece. During positioning, it is necessary to fit the reinforcing piece 6 with the clamping piece to complete the positioning. However, compared with the structure composed of two clamping pieces, the positioning stability is slightly reduced.

[0032] In the present utility model, the term "multiple" refers to two or more, unless otherwise clearly defined. The term "and / or" used herein includes any and all combinations of one or more of the related listed items. Terms such as "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0033] It should be noted that when an element is referred to as being "assembled on", "installed on", "fixed to" or "disposed on" another element, it can be directly on the other element or there may also be an intermediate 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 intermediate element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation.

[0034] In the description of this specification, the description of terms such as "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0035] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and purposes of the present invention. The scope of the present invention is defined by the claims and their equivalents.

Claims

1. A welding fixture for a transformer clamping piece, comprising a base (1), characterized in that A side limit post (2) and an end limit post (3) for abutting against a transformer clamping piece (4) are installed on the base (1), and a fixed push block (5) for pushing the transformer clamping piece (4) towards the side limit post (2) is installed on the base (1). A plurality of limit arms (7) for positioning a strengthening piece (6) are hinged to one side of the base (1) away from the fixed push block (5).

2. The welding jig for the transformer clamping piece according to claim 1, characterized in that The side limit post (2), the end limit post (3) and the fixed push block (5) enclose an installation space for accommodating the transformer clamping piece (4), and a plurality of padding parts (8) are installed at the bottom of the installation space.

3. The welding jig for the transformer clamping part according to claim 1, characterized in that A plurality of arranged push rod seats (9) are installed on the base (1). A connecting push rod (10) is slidably installed on one side of the push rod seat (9) close to the fixed push block (5). The connecting push rod (10) is connected to the fixed push block (5). The other end of the push rod seat (9) is hinged with a dial block (11). The dial block (11) is connected to the connecting push rod (10) through a linkage part (12) which is hinged. When the dial block (11) is toggled, the linkage part (12) pulls the connecting push rod (10) to slide.

4. The welding fixture for the transformer clamping piece according to claim 3, wherein All the dial blocks (11) are fixedly connected through a first linkage rod (13).

5. The welding jig for the transformer clamping piece according to claim 3, characterized in that A plurality of arranged guide rail seats (14) are installed on the base (1). A guide rail rod (15) which slides in the same direction as the connecting push rod (10) is slidably installed on the guide rail seat (14). One end of the guide rail rod (15) is connected to the fixed push block (5).

6. The welding fixture for the transformer clamping piece according to claim 1, characterized in that A plurality of arranged hinge seats (16) are installed on the base (1). The limit arms (7) are hingedly installed on the hinge seats (16).

7. The welding fixture for the transformer clamping piece according to claim 1, characterized in that All the limit arms (7) are fixedly connected through a second linkage rod (17).

8. The welding fixture for the transformer clamping piece according to claim 1, characterized in that The limit arm (7) is composed of two clamping pieces, and a limit space for accommodating the strengthening piece (6) is formed between the clamping pieces.

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