Resistance sheet welding tool

Abstract

The present disclosure relates to the technical field of welding tooling, and one embodiment of the present disclosure provides a resistance sheet welding tooling, which comprises resistance sheets, the resistance sheets are divided into three groups, each group of resistance sheets is 22 pieces, and the resistance sheet welding tooling further comprises lead screws, stainless steel pipes, nut blocks, gaskets and pressing mechanisms, the lead screws are provided in two, through holes are formed at two ends of the three groups of resistance sheets, the two lead screws respectively pass through a plurality of adjacent through holes, the stainless steel pipes are provided in a plurality, the plurality of stainless steel pipes are sleeved on each lead screw, two nut blocks are respectively arranged at two ends of the two lead screws, a locking mechanism is arranged on each adjacent two nut blocks, and a gasket is arranged at each end of the two lead screws. Through the above technical scheme, the technical problem of the prior art that the welding point is close to the ceramic column, the ceramic isolation column is overheated and cracked, and it is difficult to completely ensure the coaxial precision of each resistance sheet is solved. After the resistance sheet is welded, the lead screw is difficult to pass through, and even it may be impossible to pass through.

Description

Technical Field

[0001] The embodiments disclosed herein relate to the field of welding fixture technology, and more specifically, to a resistor sheet welding fixture. Background Technology

[0002] As an energy-consuming component during emergency stop of the flywheel, the braking resistor ensures that the flywheel can quickly release energy when a fault occurs during high-speed operation, and reduce the flywheel speed to below a safe level within an effective time.

[0003] During the resistor production process, each group of resistor pieces must be welded together. When assembling resistors, ceramic pillars are used to insulate between the pieces. There are generally two methods for resistor welding: one is to weld the resistor pieces after they are connected in series in one layer, and the other is to arrange the resistor pieces first and then weld them together. After welding is completed, the lead screw and the insulating ceramic pillar are then inserted.

[0004] Of the two welding methods mentioned above, the disadvantage of method 1 is that after welding, the ceramic isolation column may overheat and crack due to the close proximity of the weld point to the ceramic column. The disadvantage of method 2 is that it is difficult to completely guarantee the coaxial accuracy of each resistor piece, and the lead screw may be difficult to pass through after the resistor pieces are welded, or even impossible to pass through. Utility Model Content

[0005] To overcome the above-mentioned defects, embodiments of this disclosure provide a resistance sheet welding fixture to solve the problems of the following in the prior art: in Method 1, the welding point is too close to the ceramic column, which may cause the ceramic isolation column to overheat and break; and in Method 2, it is difficult to ensure the coaxial accuracy of each resistance sheet, and the lead screw is difficult to pass through after the resistance sheet is welded, or may even be unable to pass through.

[0006] According to one aspect, at least one embodiment of this disclosure provides a resistance sheet welding fixture, including resistance sheets divided into three groups, each group having 22 resistance sheets, and further including: lead screws, stainless steel tubes, nut blocks, washers, and a clamping mechanism. Two lead screws are provided, and through holes are opened at both ends of the three groups of resistance sheets. The two lead screws respectively pass through each of the adjacent through holes. Multiple stainless steel tubes are provided, and multiple stainless steel tubes are sleeved on each lead screw, with the multiple stainless steel tubes located between each of the adjacent two resistance sheets. Two nut blocks are respectively provided at both ends of the two lead screws, and a locking mechanism is provided on each of the adjacent two nut blocks for tightening the two nut blocks. Washers are respectively provided at both ends of the two lead screws, with each washer corresponding one-to-one with each of the adjacent two nut blocks. A clamping mechanism is provided on each of the adjacent two nut blocks for clamping the corresponding washer.

[0007] To tighten the two nut blocks on the lead screw, the locking mechanism includes: threads, fixing plates, and limiting components. Each of the two nut blocks has a threaded hole at one of its opposite ends. Both threads are threaded to the lead screw. Each nut block is fixedly connected to a fixing plate. The limiting components are set on the two fixing plates and are used to limit the movement of the two nut blocks.

[0008] To limit the movement of the two fixed plates after they are joined, the limiting assembly includes a connecting rod, a locking rod, a locking shaft, and a clamping assembly. The two ends of the connecting rod are rotatably connected to the two fixed plates respectively. One end of the locking rod is rotatably connected to one of the fixed plates, and the locking shaft is fixedly connected to the other fixed plate. The other end of the locking rod has a limiting groove, and the locking shaft is located in the limiting groove. The clamping assembly is disposed on the locking rod and is used to clamp the locking shaft against the limiting groove.

[0009] In order to lock the locking shaft in the limiting groove, the clamping assembly includes a clamping rod, a baffle, and a tension spring. The clamping rod is slidably connected to the locking rod, one end of the clamping rod is in contact with the locking shaft, the baffle is fixedly connected to the other end of the clamping rod, and both ends of the tension spring are fixedly connected to the locking rod and the baffle, respectively.

[0010] In order to press the gasket, the pressing mechanism includes a pressing block and balls. The pressing blocks are fixedly connected to both of the fixed plates. Each pressing block has multiple rolling grooves. Each rolling groove has a rotatably connected ball. The multiple balls are in rolling contact with the corresponding gasket.

[0011] To facilitate operators in using a wrench to turn two nut blocks on the lead screw, the outer surface of each pair of adjacent nut blocks is hexagonal after being combined.

[0012] To increase the stability of the connection between the two fixed plates, a stabilizing shaft is fixedly connected to the fixed plate. Rotating holes are provided at both ends of the connecting rod, and the two stabilizing shafts are rotatably connected in the two rotating holes respectively.

[0013] To increase the fit between the abutment rod and the locking shaft, one end of the abutment rod is provided with a groove that matches the surface of the locking shaft.

[0014] The beneficial effects of the embodiments disclosed herein are as follows: In this disclosure: 1. Using stainless steel tubes instead of ceramic pillars to isolate the resistor elements can prevent the ceramic pillars from breaking during the welding process.

[0015] 2. By using a lead screw to pass through multiple resistor elements and isolating them with a stainless steel tube, it can be ensured that the holes of the resistor elements remain highly coaxial after welding.

[0016] 3. By setting up the nut block, locking mechanism and clamping mechanism, multiple resistor pieces can be clamped during welding, which improves the efficiency of resistor piece welding. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments of this disclosure will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this disclosure and these drawings without any creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure in one embodiment of the present disclosure; Figure 2 This is a schematic diagram of the locking mechanism in one embodiment of the present disclosure; Figure 3 This is a schematic diagram of the clamping mechanism in one embodiment of the present disclosure; Figure 4 This is a schematic diagram of the structure of the limiting component in one embodiment of the present disclosure.

[0019] In the diagram: 1. Resistor element; 2. Lead screw; 3. Stainless steel tube; 4. Nut block; 5. Washer; 6. Thread; 7. Fixing plate; 8. Connecting rod; 9. Locking rod; 10. Locking shaft; 11. Abutting rod; 12. Baffle; 13. Tension spring; 14. Pressure block; 15. Ball bearing. Detailed Implementation The present disclosure will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present disclosure and are not intended to limit the scope of the disclosure.

[0020] To keep the drawings concise, each drawing only schematically shows the parts relevant to the disclosure; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0021] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure based on the specific circumstances.

[0022] In this disclosure, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0023] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this disclosure.

[0024] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0025] like Figures 1-4 As shown, a welding fixture for resistor sheets 1 according to an embodiment of the present disclosure is illustrated. The fixture includes resistor sheets 1, which are divided into three groups of 22 sheets each. It also includes a lead screw 2, a stainless steel tube 3, a nut block 4, a washer 5, and a clamping mechanism. The outer surface of each pair of adjacent nut blocks 4 is hexagonal after being joined together. There are two lead screws 2. Through holes are opened at both ends of the three groups of resistor sheets 1. The two lead screws 2 pass through each pair of adjacent through holes. There are multiple stainless steel tubes 3. Multiple stainless steel tubes 3 are sleeved on each lead screw 2 and are located between each pair of adjacent resistor sheets 1. Two nut blocks 4 are respectively provided at both ends of the two lead screws 2. A locking mechanism is provided on each pair of adjacent nut blocks 4 to tighten the two nut blocks 4. A washer 5 is provided at both ends of the two lead screws 2. Each washer 5 corresponds to each pair of adjacent nut blocks 4. A clamping mechanism is provided on each pair of adjacent nut blocks 4 to clamp the corresponding washer 5.

[0026] The locking mechanism includes: threads 6, fixing plates 7, and limiting components. Each of the two nut blocks 4 has a threaded hole at one opposite end. Both threads 6 are connected to the threaded screw 2. A fixing plate 7 is fixedly connected to each nut block 4. The limiting components are mounted on the two fixing plates 7 to limit the movement of the two nut blocks 4. The limiting components include: a connecting rod 8, a locking rod 9, a locking shaft 10, and a clamping component. A stabilizing shaft 16 is fixedly connected to the fixing plate 7. Rotating holes are provided at both ends of the connecting rod 8. The two stabilizing shafts 16 are rotatably connected to the two rotating holes respectively. Both ends of the connecting rod 8 are rotatably connected to the two fixing plates 7 respectively. One end of the locking rod 9 rotates... The locking shaft 10 is fixedly connected to one of the fixed plates 7, and the locking rod 9 has a limit groove at the other end. The locking shaft 10 is located in the limit groove. The abutment assembly is set on the locking rod 9 to abut the locking shaft 10 in the limit groove. The abutment assembly includes: abutment rod 11, baffle 12 and tension spring 13. One end of the abutment rod 11 has a groove that matches the surface of the locking shaft 10. The abutment rod 11 is slidably connected to the locking rod 9. One end of the abutment rod 11 contacts the locking shaft 10. The baffle 12 is fixedly connected to the other end of the abutment rod 11. The two ends of the tension spring 13 are fixedly connected to the locking rod 9 and the baffle 12, respectively.

[0027] The clamping mechanism includes: clamping block 14 and ball bearings 15. Clamping blocks 14 are fixedly connected to both fixed plates 7. Each clamping block 14 has multiple roller grooves. Each roller groove is rotatably connected to a ball bearing 15. The multiple balls bearing 15 are in rolling contact with the corresponding gaskets 5.

[0028] The working principle is as follows: When welding the resistor sheet 1, both ends of the resistor sheet 1 are passed through the lead screw 2. Each pair of adjacent resistor sheets 1 is isolated by a stainless steel tube 3. Then, two nut blocks 4 are put on the lead screw 2. Then, the limiting groove on the locking rod 9 is fastened to the locking shaft 10, thereby merging the two fixing plates 7, which in turn drives the two nut blocks 4 to merge. After the two nut blocks 4 merge, the threads 6 on their opposite sides are connected to the threads 6 of the lead screw 2. Then, the operator turns the two nut blocks 4 with a wrench, which drives the two clamping blocks 14 to move, so that the rotating balls 15 on the clamping blocks 14 press against the washer 5. As the nut blocks 4 are tightened, the washer 5 is pressed.

[0029] It should be noted that the reason why the nut blocks 4 are designed to be two that can be opened and closed is that the two nut blocks 4 can move quickly on the base rod. When a longer distance needs to be moved on the lead screw 2, there is no need to turn the nut blocks 4 one turn at a time. You only need to straddle the base rod with the two nut blocks 4 and move them quickly. After moving to the designated position, the two nut blocks 4 can be joined together, and then the nut blocks 4 can be turned by turning them with a wrench, thereby improving the tightening efficiency.

[0030] It should be noted that the above embodiments are only used to illustrate the technical solutions of this disclosure and are not intended to limit it. Although this disclosure has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this disclosure without departing from the spirit and scope of the technical solutions of this disclosure, and all such modifications and substitutions should be covered within the scope of the claims of this disclosure.

Claims

1. A resistor sheet welding fixture, comprising resistor sheets (1), wherein the resistor sheets (1) are divided into three groups, each group comprising 22 resistor sheets (1), characterized in that, Also includes: Two lead screws (2) are provided. Through holes are opened at both ends of the three sets of resistors (1). The two lead screws (2) pass through each of the adjacent through holes respectively. Stainless steel tube (3), multiple stainless steel tubes (3) are provided, and multiple stainless steel tubes (3) are sleeved on each lead screw (2), and multiple stainless steel tubes (3) are respectively located between each two adjacent resistor pieces (1); Nut blocks (4): Two nut blocks (4) are respectively provided at both ends of the two lead screws (2). Each pair of adjacent nut blocks (4) is provided with a locking mechanism, which is used to tighten the two nut blocks (4). Washers (5), each of the two leadscrews (2) is provided with washers (5) at both ends, and each washer (5) corresponds one-to-one with each of the two adjacent nut blocks (4); A clamping mechanism is provided on each pair of adjacent nut blocks (4) for clamping the corresponding gasket (5).

2. The resistance element welding fixture according to claim 1, characterized in that, The locking mechanism includes: The two nut blocks (4) have threaded holes at opposite ends, and the two threads (6) are connected to the screw (2) thread (6); The fixing plate (7) is fixedly connected to each of the nut blocks (4); A limiting component is disposed on the two fixing plates (7) for limiting the two nut blocks (4).

3. The resistance element welding fixture according to claim 2, characterized in that, The limiting component includes: The connecting rod (8) has two ends that are rotatably connected to the two fixing plates (7); A locking rod (9), one end of which is rotatably connected to one of the fixing plates (7); Locking shaft (10), the locking shaft (10) is fixedly connected to another fixed plate (7), and a limiting groove is opened at the other end of the locking rod (9), and the locking shaft (10) is located in the limiting groove; A clamping component is disposed on the locking rod (9) for clamping the locking shaft (10) against the limiting groove.

4. The resistor sheet welding fixture according to claim 3, characterized in that, The clamping component includes: A retaining rod (11) is slidably connected to the locking rod (9), and one end of the retaining rod (11) is in contact with the locking shaft (10); A baffle (12) is fixedly connected to the other end of the abutment rod (11); A tension spring (13) is fixedly connected at both ends to the locking rod (9) and the baffle (12), respectively.

5. The resistor sheet welding fixture according to claim 2, characterized in that, The clamping mechanism includes: The clamping block (14) is fixedly connected to both of the two fixing plates (7). Each of the pressing blocks (14) has multiple grooves, and each of the grooves is rotatably connected to a ball (15). The multiple balls (15) are in rolling contact with the corresponding pads (5).

6. The resistor sheet welding fixture according to claim 1, characterized in that, After each pair of adjacent nut blocks (4) are joined together, their outer surfaces form a hexagonal shape.

7. The resistor sheet welding fixture according to claim 3, characterized in that, A stabilizing shaft (16) is fixedly connected to the fixing plate (7). Rotating holes are provided at both ends of the connecting rod (8). The two stabilizing shafts (16) are rotatably connected in the two rotating holes respectively.

8. The resistor sheet welding fixture according to claim 4, characterized in that, One end of the clamping rod (11) has a groove that matches the surface of the locking shaft (10).

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