Auxiliary welding device for low-voltage outgoing line of transformer

Abstract

The utility model provides a transformer low-voltage leading-out wire welding auxiliary device which comprises a supporting platform, a pressing mechanism and a pressing mechanism, the pressing mechanism comprises two supporting columns fixed to the surface of the supporting platform, a supporting plate is fixed to the top ends of the supporting columns, and a driving air cylinder connected with a controller is fixed to the surface of the supporting plate. A piston rod of the driving air cylinder vertically and downwards penetrates through a preset through hole in the supporting plate, then the tail end of the piston rod is connected with a loading plate, a plurality of pressing rods arranged at intervals are fixed to the bottom face of the loading plate, and conical pressing heads are integrally formed at the lower ends of the pressing rods. The top end of the polished rod is connected with a rod head, the polished rod is movably sleeved with a pre-tightening spring and a pressing elastic piece, and the two ends of the pre-tightening spring abut against the pressing elastic piece and the rod head. According to the device, welding bodies of a plurality of copper bars and connecting pieces can be sequentially pressed through the pressing elastic piece and the conical pressing head, the operation efficiency is high, and large-scale production of the welding bodies is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of transformer lead welding, in particular to a transformer low-voltage lead welding auxiliary device. Background Art

[0002] A transformer is a static electrical device used to transform AC voltage and current to transmit AC power. It is a device used to convert a certain value of AC voltage (current) into another or several different values ​​of voltage (current) with the same frequency. It realizes power transmission based on the principle of electromagnetic induction. When AC is passed through the primary winding, an alternating magnetic flux is generated. The alternating magnetic flux induces AC electromotive force in the secondary winding through the magnetic conduction of the iron core. The magnitude of the secondary induced electromotive force is related to the number of turns of the primary and secondary windings, that is, the voltage is proportional to the number of turns. In order to lead the electricity of the low-voltage coil inside the transformer to the external lead-out bushing of the transformer, the prior art generally connects it through a low-voltage lead-out line. The low-voltage lead-out line is a welded body of a copper busbar 10 (approximately U-shaped) and a terminal lug 20 (approximately L-shaped). One end of the copper busbar 10 in the welded body is connected to the low-voltage coil, and one end of the terminal lug 20 in the welded body is connected to the transformer lead-out bushing. The copper busbar 10 and the terminal lug 20 are both made of copper. For the specific structure of the welded body, please refer to Figure 3 At present, the welding of copper busbars and terminal lugs is mainly completed by manual welding. The specific process is to first connect and fix a copper busbar and a terminal lug and then weld them. However, such operation efficiency is very low, which seriously restricts the large-scale production of the welding of copper busbars and terminal lugs. Therefore, it is urgent to improve this situation. Utility Model Content

[0003] Aiming at the existing manual welding process of the copper busbar and the terminal piece connecting the low-voltage coil inside the transformer and the external lead-out bushing of the transformer, a copper busbar and a terminal piece are first butted and fixed before welding. However, such operation efficiency is very low, which seriously restricts the technical problem of large-scale production of the copper busbar and the terminal piece welding body. The utility model provides a transformer low-voltage lead-out wire welding auxiliary device.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0005] The camshaft of the second support frame is fixedly mounted on the support frame, and the camshaft is connected to the support frame by a toothed connection. The camshaft is connected to the support frame by a toothed connection. The toothed connection member is a toothed connection member connected to the support frame by a toothed connection.

[0006] Compared with the prior art, when the transformer low-voltage lead-out wire welding auxiliary device provided by the utility model is used, first, one end of the copper bar in the low-voltage lead-out wire is placed on the surface of the supporting platform by hand, and one end of the wiring piece in the low-voltage lead-out wire is pressed on the surface of one end of the copper bar, and then the pressing spring piece is bent up by hand and rotated and pressed on the edge of the surface of one end of the wiring piece. After releasing the hand, the pressing spring piece will be forced to undergo elastic deformation. Under the joint action of the elastic force generated by the elastic deformation and the pre-tightening force of the pre-tightening spring, the copper bar and one end of the wiring piece are pressed together on the surface of the supporting platform, thereby the copper bars and one end of the wiring piece in multiple low-voltage lead-out wires can be pre-pressed in parallel on the surface of the supporting platform, and then the controller controls the piston rod of the driving cylinder to extend downward, and the loading plate at the end of the piston rod drives the multiple pressing rods fixedly connected to the bottom surface to move downward, and then the conical pressing head at the lower end of the pressing rod is used to press the middle of the surface of one end of the wiring piece, and then the pressing spring piece is bent up again by hand and turned back to the initial position, so that the contact between one end of the copper bar and one end of the wiring piece is not blocked, and finally welding can be performed. Therefore, the device can first press the copper busbars and one end of the terminal lugs in multiple low-voltage lead-out wires in parallel on the surface of the support platform through the pressing mechanism, and then press the middle of the surface of one end of the terminal lug through the conical pressing head at the lower end of the pressing rod. After the pressing of the pressing spring piece is removed, the welding body of the copper busbar and the terminal lug can still be pressed by the conical pressing head for welding. Therefore, such operation efficiency is very high, which is conducive to the large-scale production of the copper busbar and terminal lug welding body.

[0007] Furthermore, the front sides of the first support column and the second support column are fixedly connected with a reinforcing crossbeam, and the front side of the reinforcing crossbeam is fixedly connected with a ring sleeve suitable for the pressing rod to pass through.

[0008] Furthermore, the first support column and the second support column are hollow columns, and the sides of the hollow columns are provided with hanging openings suitable for hanging pliers.

[0009] Furthermore, a groove suitable for placing one end of the copper busbar in the low-voltage lead-out line is provided on the surface of the support platform below the pressing rod.

[0010] Furthermore, the front side of the support platform is fixedly connected to a clamping plate suitable for clamping the copper busbar in the low-voltage lead-out line. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 The utility model is a schematic diagram of the structure of a transformer low-voltage lead-out wire welding auxiliary device.

[0012] Figure 2 yes Figure 1 Schematic diagram of the enlarged structure of the pressing mechanism.

[0013] Figure 3 The invention is a schematic diagram of the welding structure of a copper busbar and a terminal piece in the prior art.

[0014] In the figure, 1, support platform; 10, copper busbar; 11, groove; 12, clamping plate; 2, pressing mechanism; 20, wiring piece; 21, first support column; 211, hanging mouth; 22, second support column; 23, support plate; 24, driving cylinder; 25, loading plate; 26, pressing rod; 27, conical pressing head; 28, reinforcing beam; 29, ring sleeve; 3, pressing mechanism; 31, bare rod; 32, rod head; 33, preload spring; 34, pressing shrapnel. DETAILED DESCRIPTION

[0015] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below with reference to specific illustrations.

[0016] In the description of the present invention, it should be understood that the terms "longitudinal", "radial", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0017] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0018] Please refer to Figure 1 and Figure 2 As shown, the utility model provides a transformer low-voltage lead-out wire welding auxiliary device, including a support platform 1, a pressing mechanism 2 and a pressing mechanism 3, the pressing mechanism 2 includes a first support column 21 and a second support column 22 fixedly arranged on the surface of the support platform 1, the tops of the first support column 21 and the second support column 22 are fixed with a support plate 23, the surface of the support plate 23 is fixedly provided with a driving cylinder 24 connected to a controller, the controller can be specifically implemented by an existing PLC controller, the specific control method of the cylinder by the controller is well known to those skilled in the art, the piston rod of the driving cylinder 24 vertically downward passes through a preset through hole on the support plate 23 and the end is connected to a loading plate 25, the loading plate 25 A plurality of pressing rods 26 arranged at intervals are fixedly connected to the bottom surface, and a conical pressing head 27 is integrally formed at the lower end of the pressing rod 26; the pressing mechanism 3 includes a plurality of groups of rods having the same number as the pressing rods 26, that is, the number of rod groups is the same as the number of pressing rods and corresponds to each other, and each group of rods includes two light rods 31 fixedly arranged on the surface of the supporting platform 1 on the lower side of the pressing rod 26, the top end of the light rod 31 is connected to a rod head 32, and a pre-tightening spring 33 and a pressing shrapnel 34 are movably sleeved on the light rod 31, so that the pressing shrapnel 34 can be rotated on the light rod 31 to facilitate pressing, and the two ends of the pre-tightening spring 33 are respectively against the pressing shrapnel 34 and the rod head 32, that is, the pre-tightening spring 33 is arranged between the pressing shrapnel 34 and the rod head 32.

[0019] Compared with the prior art, when the transformer low-voltage lead-out wire welding auxiliary device provided by the utility model is used, first, one end of the copper bar in the low-voltage lead-out wire is placed on the surface of the supporting platform by hand, and one end of the wiring piece in the low-voltage lead-out wire is pressed on the surface of one end of the copper bar, and then the pressing spring piece is bent up by hand and rotated and pressed on the edge of the surface of one end of the wiring piece. After releasing the hand, the pressing spring piece will be forced to undergo elastic deformation. Under the joint action of the elastic force generated by the elastic deformation and the pre-tightening force of the pre-tightening spring, the copper bar and one end of the wiring piece are pressed together on the surface of the supporting platform, thereby the copper bars and one end of the wiring piece in multiple low-voltage lead-out wires can be pre-pressed in parallel on the surface of the supporting platform, and then the controller controls the piston rod of the driving cylinder to extend downward, and the loading plate at the end of the piston rod drives the multiple pressing rods fixedly connected to the bottom surface to move downward, and then the conical pressing head at the lower end of the pressing rod is used to press the middle of the surface of one end of the wiring piece, and then the pressing spring piece is bent up again by hand and turned back to the initial position, so that the contact between one end of the copper bar and one end of the wiring piece is not blocked, and finally welding can be performed. Therefore, the device can first press the copper busbars and one end of the terminal lugs in multiple low-voltage lead-out wires in parallel on the surface of the support platform through the pressing mechanism, and then press the middle of the surface of one end of the terminal lug through the conical pressing head at the lower end of the pressing rod. After the pressing of the pressing spring piece is removed, the welding body of the copper busbar and the terminal lug can still be pressed by the conical pressing head for welding. Therefore, such operation efficiency is very high, which is conducive to the large-scale production of the copper busbar and terminal lug welding body.

[0020] As a specific example, please refer to Figure 1 As shown, the front side of the first support column 21 and the second support column 22 is fixedly connected with a reinforcing crossbeam 28, and the front side of the reinforcing crossbeam 28 is fixedly connected with a ring sleeve 29 suitable for the pressing rod 26 to pass through. By adopting the technical solution in this embodiment, the structure between the first support column 21 and the second support column 22 can be reinforced by the reinforcing crossbeam 28, and the pressing rod 26 can be sleeved and supported by the ring sleeve 29, thereby effectively ensuring the stability of the conical pressing head 27 at the lower end of the pressing rod 26 when pressing.

[0021] As a specific example, please refer to Figure 1 As shown, the first support column 21 and the second support column 22 are hollow columns, and the side of the hollow column is provided with a hanging opening 211 suitable for hanging pliers, so as to facilitate the removal of the pliers hung on the hanging opening 211 during the welding process to fine-tune the copper busbar and the terminal block pressed on the surface of the support platform.

[0022] As a specific example, please refer to Figure 1 As shown, the surface of the support platform 1 below the pressing rod 26 is provided with a groove 11 suitable for placing one end of the copper busbar in the low-voltage lead-out line, thereby ensuring that the spacing positions of multiple copper busbars are more uniform and the placement is more neat.

[0023] As a specific example, please refer to Figure 1 As shown, the front side of the support platform 1 is fixedly connected to a clamping plate 12 suitable for clamping the copper bar in the low-voltage lead-out line. Therefore, when one end of the approximately U-shaped copper bar is placed on the surface of the support platform, the other end of the copper bar can be clamped through the clamping plate 12, ensuring that the copper bar is more stable after being placed.

[0024] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A transformer low voltage lead wire welding auxiliary device, characterized in that: The cam is an air-conditioner which is arranged on a pair of support legs and is adapted to engage with the support legs in a manner which allows the cam to engage with the support legs in a manner which allows the cam to engage with the support legs in a manner which allows the cam to engage with the support legs in a manner which allows the cam to engage with the support legs in a manner which allows the cam to engage with the support legs in a manner which allows the cam to engage with the support legs in a manner which allows the cam to engage with the support legs in a manner which allows the cam to engage with the support legs in a manner which allows the cam to engage with the support legs in a manner which allows the cam to engage with the support legs in a manner which allows 2. The transformer low voltage lead wire welding auxiliary device according to claim 1, characterized in that: The front sides of the first support column and the second support column are fixedly connected with a reinforcing crossbeam, and the front side of the reinforcing crossbeam is fixedly connected with a ring sleeve suitable for the pressing rod to pass through.

3. The transformer low-voltage lead wire welding auxiliary device according to claim 1, characterized in that: The first support column and the second support column are hollow columns, and the sides of the hollow columns are provided with hanging openings suitable for hanging pliers.

4. The transformer low-voltage lead wire welding auxiliary device according to claim 1, characterized in that: The surface of the support platform below the pressing rod is provided with a groove suitable for placing one end of the copper busbar in the low-voltage lead-out line.

5. The transformer low voltage lead wire welding auxiliary device according to claim 1, characterized in that: The front side edge of the support platform is fixedly connected to a clamping plate suitable for clamping the copper busbar in the low-voltage lead-out line.

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