Clamping device for welding SF6 gas density relay

Abstract

The utility model relates to the field of welding devices, in particular to a clamping device for welding an SF6 gas density relay. The clamping device comprises a frame body, a meter shell fastening module and a jacking module, the meter shell fastening module and the jacking module are installed above the rotary fixing table, the frame body comprises a base, a supporting rod set vertically arranged on the base and a sliding rod set horizontally arranged, the plane where the base is located is perpendicular to the plane where the supporting rod set is located, and the supporting rod set and the sliding rod set are located on the same plane. The clamping device has the beneficial effects that the extension directions of the clamping device and the watchcase fastening module are perpendicular to each other, the defect that traditional manual positioning welding precision is low is overcome, welding precision and efficiency are improved by welding in the mode of first positioning and then pressing, meanwhile, the watchcase fastening module is designed to be detachable and replaceable, the application range of the clamping device is widened, and use objects are increased; the clamping device is simple in structural design, convenient to disassemble and assemble and practical, and the jacking block of a quick-wear part also adopts a replaceable design, so that the service life of the whole machine can be greatly prolonged, and the maintenance time is shortened.

Description

Technical Field

[0001] The utility model relates to the field of welding devices, in particular to a clamping device for welding an SF6 gas density relay. Background Art

[0002] SF6 density relay is an important protection and control element in the power system. If the circuit breaker fails, it will cause great economic losses. To ensure the reliability of circuit breaker operation, it is necessary to regularly monitor various indicators of the circuit breaker, especially SF6 gas, which must meet the requirements of relevant standards to keep the SF6 circuit breaker in good working condition for a long time. However, many factories currently use traditional operating platforms in the production of SF6 density relays. The operation is single, the positioning accuracy of manual welding is poor, and the device for clamping the case cannot be flexibly replaced, which makes the use of the fixed device narrow and cannot meet the welding requirements of different types of welding objects for the device. In addition, the related wearing parts cannot be replaced, which also limits the life of the device.

[0003] The purpose of the utility model is to provide a clamping device for welding SF6 gas density relays to solve the problems raised in the above-mentioned background technology that the traditional operating platform is single in operation when welding SF6 density relays, the manual welding positioning accuracy is not high, the clamping device cannot be flexibly replaced, and the related wearing parts cannot be replaced. Utility Model Content

[0004] The purpose of the utility model is to provide a clamping device for welding SF6 gas density relay, which can make up for the defect of low precision of traditional manual positioning welding, and improve the welding precision and efficiency by welding in the way of positioning first and then pressing. At the same time, the case fastening module is designed to be detachable and replaceable, which expands the application scope of the clamping device itself and increases the objects of use. The clamping device has a simple structural design, and is convenient and practical to disassemble and assemble. In addition, a replaceable design is also adopted for the top tightening block of the wearing part, which can greatly extend the service life of the whole machine and shorten the maintenance time.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A clamping device for welding an SF6 gas density relay, the clamping device comprising a frame, a case fastening module and a top tightening module installed above a rotating fixed table;

[0007] The frame includes a base, a support rod group vertically arranged on the base, and a slide rod group horizontally arranged, wherein the planes where the base and the support rod group are located are perpendicular to each other, the support rod group and the slide rod group are in the same plane, and the extension directions of the two are perpendicular to each other;

[0008] The tightening module includes a T-shaped cylinder support seat and cylinders B and A fixed on both sides thereof, respectively. The T-shaped top of the cylinder support seat is connected to the slide rod group through a ring sleeve group, and the ring sleeve group is inserted into the slide rod group and can slide left and right.

[0009] The lower part of the oil cylinder A is connected to the positioning rod through the bearing fixing seat A, and the extension and retraction of the piston of the oil cylinder A controls the lifting and lowering of the positioning rod. The lower part of the oil cylinder B is connected to the top tightening block through the bearing fixing seat B, and the extension and retraction of the piston of the oil cylinder B controls the lifting and lowering of the top tightening block, wherein the positioning rod is inserted into the top tightening block and is concentrically arranged;

[0010] The fixed block of the rotating fixed platform is arranged on the base, and a rotating chuck is arranged on the fixed block, and the case fastening module is grasped by the fixed claws on the rotating chuck;

[0011] The case fastening module includes a case fixing seat, which is fixedly connected to a rotating fixing platform via a fixing seat block arranged on the lower surface; a case clamping wrench and a clamping head are arranged on the upper part of the case fixing seat, and the clamping head can tighten and loosen the case of the SF6 gas density relay by controlling the opening and closing of the case clamping wrench; a meter joint fixing seat is also arranged on the case fixing seat.

[0012] Preferably, the base is provided with two mutually parallel fixing grooves, the bottom of the support rod group is inserted into the fixing grooves and can move forward and backward along the fixing grooves, and after moving into position, it is fastened to the base by a fixing seat penetrated through the support rod group; the support rod group and the sliding rod group are connected to each other by a number of cross connecting blocks.

[0013] Preferably, the interior of the tightening block is vertically penetrated downward, the lower part is in the shape of an inward-retracted funnel and the outer surface has four centrally symmetrical sections, wherein two bosses protrude downward from the bottom ends of two corresponding sections; and the bottom of the positioning rod is conical.

[0014] Preferably, the conical bottom of the positioning rod and the positioning rod body are fixedly connected to the bolt head via an internal thread.

[0015] Preferably, a connecting block is arranged between the lower surface of the bearing fixing seat B and the tightening block, the lower surface of the connecting block is fixedly connected to the top of the tightening block, and the positioning rod is simultaneously passed through the through holes penetrating downward inside the connecting block and the tightening block.

[0016] Preferably, the curvature of the upper surface of the meter joint fixing seat matches the inner curvature of the SF6 gas density relay case.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] 1. The frame space structure of the utility model involves three planes that are perpendicular to each other. The corresponding structure on each plane can be fine-tuned according to the actual welding object, so that the technical solution can not only meet the welding of SF6 gas density relays, but also be adapted to other instruments with higher welding requirements.

[0019] 2. The utility model determines the welding position by first positioning and then pressing, which improves the welding accuracy of single positioning or single pressing, can make welding more stable, and solves the problem of poor manual positioning accuracy during welding of traditional SF6 gas density relays. After the welding position is determined, it can be operated continuously for multiple times, which improves work efficiency and the degree of automation of the overall production process.

[0020] 3. The bottom of the positioning rod of the utility model adopts a detachable design, which solves the problem of cumbersome replacement of wearing parts, shortens the maintenance time, and prolongs the service life of the whole machine.

[0021] 4. The utility model adopts a rotating fixing table to fix the case fastening module. When the welding object needs to be replaced, the case fastening module can be disassembled and replaced with a clamping module corresponding to other welding objects, which expands the scope of application and use objects of this technical solution.

[0022] In summary, the utility model provides a clamping device for welding SF6 gas density relay, which makes up for the defect of low precision of traditional manual positioning welding, and improves welding precision and efficiency by welding in the manner of positioning first and then pressing. At the same time, the case fastening module is designed to be detachable and replaceable, which expands the application scope of the clamping device itself and increases the objects of use. The clamping device has a simple structural design, and is convenient and practical to disassemble and assemble. In addition, a replaceable design is also adopted for the tightening block of the wearing part, which can greatly extend the service life of the whole machine and shorten the maintenance time. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the overall structure of the clamping device for welding the SF6 gas density relay of the utility model;

[0024] Figure 2 This is a structural schematic diagram of the tightening module of the utility model;

[0025] Figure 3 This is a structural schematic diagram of the rotary fixing platform of the utility model;

[0026] Figure 4 This is a structural schematic diagram of the watch case fastening module of the utility model;

[0027] In the figure: frame 1; base 101; support rod group 102; slide rod group 103; fixed seat 104; cross connection block 105; fixing groove 106; rotating fixed table 2; fixing block 201; rotating chuck 202; fixing claw 203; case fastening module 3; case fixing seat 301; case clamping wrench 302; watch joint fixing seat 303; fixing seat clamping block 304; tightening module 4; ring sleeve group 401; cylinder support seat 402; cylinder A403; cylinder B404; bearing fixing seat A405; bearing fixing seat B406; tightening block 407; positioning rod 408. DETAILED DESCRIPTION

[0028] In order to make the purpose and technical solution of the utility model clearly and completely described, and the advantages more clearly understood, the embodiments of the utility model are further described in detail in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are part of the embodiments of the utility model, not all of the embodiments, and are only used to explain the embodiments of the utility model, and are not used to limit the embodiments of the utility model. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] For the purpose of simplicity and illustration, the principles of the embodiments are mainly described by reference to examples. In the following description, many specific details are proposed to provide a thorough understanding of the embodiments. However, it is obvious that for those of ordinary skill in the art, these embodiments may not be limited to these specific details in practice. In some instances, known methods and structures are not described in detail to avoid making these embodiments unnecessarily difficult to understand. In addition, all embodiments can be used in combination with each other.

[0030] Please see attached Figure 1-4 , the utility model provides a technical solution:

[0031] A clamping device for welding an SF6 gas density relay, the clamping device comprising a frame 1, a case fastening module 3 and a tightening module 4 installed above a rotating fixed platform 2;

[0032] Furthermore, the frame 1 includes a base 101, a support rod group 102 vertically arranged on the base 101, and a slide rod group 103 horizontally arranged, wherein the planes where the base 101 and the support rod group 102 are located are perpendicular to each other, the support rod group 102 and the slide rod group 103 are in the same plane, and the extension directions of the two are perpendicular to each other; the corresponding structure on each plane can be fine-tuned in position according to the actual welding object, so that the technical solution can not only meet the welding requirements of SF6 gas density relays, but also can be adapted to other instruments with higher welding requirements.

[0033] Furthermore, the tightening module 4 includes a T-shaped cylinder support seat 402 and cylinders B404 and A403 fixed on both sides thereof, respectively. The T-shaped top of the cylinder support seat 402 is connected to the slide bar group 103 through a ring sleeve group 401, and the ring sleeve group 401 is inserted into the slide bar group 103 and can slide left and right.

[0034] Furthermore, the lower part of the oil cylinder A403 is connected to the positioning rod 408 through the bearing fixing seat A405, and the extension and retraction of the piston of the oil cylinder A403 controls the lifting and lowering of the positioning rod 408. The lower part of the oil cylinder B404 is connected to the top tightening block 407 through the bearing fixing seat B406, and the extension and retraction of the piston of the oil cylinder B404 controls the lifting and lowering of the top tightening block 407. Among them, the positioning rod 408 is penetrated in the top tightening block 407 and is concentrically arranged. During the welding process, the welding position is determined by first positioning and then pressing, which improves the welding accuracy of the single positioning or single pressing method, can make the welding more stable, and solves the problem of poor manual positioning accuracy during welding of traditional SF6 gas density relays. After the welding position is determined, it can be operated continuously for many times, which improves the work efficiency and the automation degree of the overall production process;

[0035] Furthermore, the fixing block 201 of the rotating fixing table 2 is arranged on the base 101, and a rotating chuck 202 is arranged on the fixing block 201, and the case fastening module 3 is grasped by the fixing claws 203 on the rotating chuck 202; the rotating fixing table 2 fixes the case fastening module 3, and when the welding object needs to be replaced, the case fastening module 3 can be disassembled and replaced with a clamping module corresponding to other welding objects, thereby expanding the scope of application and use objects of the present technical solution.

[0036] Furthermore, the case fastening module 3 includes a case fixing seat 301, which is fixedly connected to the rotating fixing table 2 via a fixing seat block 304 arranged on the lower surface. A case clamping wrench 302 and a clamping head are arranged on the upper part of the case fixing seat 301. The clamping head can tighten and loosen the case of the SF6 gas density relay by controlling the opening and closing of the case clamping wrench 302. A connector fixing seat 303 is also arranged on the case fixing seat 301. When other types of components need to be welded, the case fastening module can be disassembled and replaced with a clamping module corresponding to other welding objects, thereby expanding the scope of application and use objects of the present technical solution.

[0037] Furthermore, the base 101 is provided with two mutually parallel fixing grooves 106, the bottom of the support rod group 102 is inserted into the fixing groove 106 and can move forward and backward along the fixing groove 106, and after moving into position, it is fastened to the base 101 by the fixing seat 104 penetrated by the support rod group 102, and the corresponding working position of the slide rod group 103 and the tightening module 4 arranged on the slide rod group 103 is determined by determining the relative position of the support rod group 102 on the fixing seat 104; the support rod group 102 and the slide rod group 103 are connected to each other by a number of cross connecting blocks 105, and when the positions of the fixing seat 104 and the support rod group 102 are relatively determined, the working position can also be adjusted by simply moving the tightening module 4 on the slide rod group 103.

[0038] Furthermore, the interior of the tightening block 407 is vertically penetrated downward, the lower part is in the shape of an inward-retracted funnel and the outer surface has four centrally symmetrical cross-sections, wherein two bosses protrude downward from the bottom ends of two corresponding cross-sections; the bottom of the positioning rod 408 is conical.

[0039] Furthermore, the conical bottom of the positioning rod 408 is fixedly connected to the rod body of the positioning rod 408 through an internal thread and a bolt head. The conical bottom of the positioning rod 408 adopts a detachable design, which solves the problem of cumbersome replacement of wearing parts, shortens maintenance time, and extends the service life of the entire machine.

[0040] Furthermore, a connecting block is arranged between the lower surface of the bearing fixing seat B406 and the tightening block 407, and the lower surface of the connecting block is fixedly connected to the top of the tightening block 407. The positioning rod 408 is also passed through the through holes that penetrate downwards inside the connecting block and the tightening block 407.

[0041] Furthermore, the curvature of the upper surface of the meter joint fixing seat 303 matches the inner curvature of the SF6 gas density relay case. When in operation, the SF6 gas density relay case is sleeved on the meter joint fixing seat 303.

[0042] Working principle: During actual work, first adjust the relative positions of the base 101, the support rod group 102 and the slide rod group 103 according to the size of the welding object and the position of the welding site. After adjustment, put the SF6 gas density relay case on the meter joint fixing seat 303, and press the case by controlling the case clamping wrench 302. First start the cylinder A403, and the extension of the piston of the cylinder A403 controls the descent of the positioning rod 408. The conical bottom of the positioning rod 408 presses the meter interface on the top of the SF6 gas density relay case. Then start the cylinder B404, and the extension of the piston of the cylinder B404 controls the descent of the tightening block 407. The two bosses at the bottom of the tightening block 407 press the meter joint on the upper part of the SF6 gas density relay case, so that its position is relatively fixed with the case. At this time, the welding process begins, and the welding head is aimed at the gap between the SF6 gas density relay case and the meter joint to start welding. During welding, the rotating fixed table 2 rotates at any time to ensure that the welding head can weld accurately without large displacement. After the welding is completed, the welding head is removed, the plungers of the cylinder A403 and the cylinder B404 are lifted, the case clamping wrench 302 is loosened, and the welded SF6 gas density relay case is removed. Repeating the above operations can achieve multiple continuous operations, improve work efficiency and the degree of automation of the overall production process, replace manual welding positioning, and make up for the defect of poor positioning accuracy.

[0043] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A clamping device for welding SF6 gas density relay, characterized in that: The clamping device comprises a frame (1), a watch case fastening module (3) and a tightening module (4) installed above a rotating fixed platform (2); The frame (1) comprises a base (101), a support rod group (102) vertically arranged on the base (101), and a slide rod group (103) horizontally arranged, wherein the planes where the base (101) and the support rod group (102) are located are perpendicular to each other, the support rod group (102) and the slide rod group (103) are in the same plane, and the extension directions of the two are perpendicular to each other; The tightening module (4) comprises a T-shaped oil cylinder support seat (402) and oil cylinders B (404) and A (403) respectively fixed on both sides thereof; the T-shaped top of the oil cylinder support seat (402) is connected to the slide bar group (103) via a ring sleeve group (401); the ring sleeve group (401) is inserted into the slide bar group (103) and can slide left and right; The lower part of the oil cylinder A (403) is connected to the positioning rod (408) through the bearing fixing seat A (405), and the extension and retraction of the piston of the oil cylinder A (403) controls the lifting and lowering of the positioning rod (408). The lower part of the oil cylinder B (404) is connected to the tightening block (407) through the bearing fixing seat B (406), and the extension and retraction of the piston of the oil cylinder B (404) controls the lifting and lowering of the tightening block (407), wherein the positioning rod (408) is inserted into the tightening block (407) and is concentrically arranged. The fixing block (201) of the rotating fixing platform (2) is arranged on the base (101), and a rotating chuck (202) is arranged on the fixing block (201), and the watch case fastening module (3) is grasped by the fixing claws (203) on the rotating chuck (202); The case fastening module (3) comprises a case fixing seat (301), the case fixing seat (301) being fixedly connected to the rotating fixing platform (2) via a fixing seat clamping block (304) arranged on the lower surface, a case clamping wrench (302) and a clamping head being arranged on the upper part of the case fixing seat (301), and the clamping head can clamp and release the case of the SF6 gas density relay by controlling the opening and closing of the case clamping wrench (302), and a gauge joint fixing seat (303) is also arranged on the case fixing seat (301).

2. A clamping device for welding a SF6 gas density relay as claimed in claim 1, characterized in that: The base (101) is provided with two mutually parallel fixing grooves (106), the bottom of the support rod group (102) is inserted into the fixing groove (106) and can move forward and backward along the fixing groove (106), and after moving into position, it is fastened to the base (101) by a fixing seat (104) penetrated on the support rod group (102); the support rod group (102) and the sliding rod group (103) are connected to each other through a plurality of cross connecting blocks (105).

3. A clamping device for welding a SF6 gas density relay as claimed in claim 1, characterized in that: The interior of the tightening block (407) is vertically penetrated downward, the lower part is in the shape of an inwardly retracted funnel and the outer surface has four centrally symmetrical sections, wherein two bosses protrude downward at the bottom ends of two corresponding sections; the bottom of the positioning rod (408) is conical.

4. A clamping device for welding a SF6 gas density relay as claimed in claim 3, characterized in that: The conical bottom of the positioning rod (408) and the rod body of the positioning rod (408) are fixedly connected to the bolt head via an internal thread.

5. A clamping device for welding a SF6 gas density relay as claimed in claim 3, characterized in that: A connecting block is arranged between the lower surface of the bearing fixing seat B (406) and the tightening block (407), and the lower surface of the connecting block is fixedly connected to the top of the tightening block (407). The positioning rod (408) is simultaneously passed through the through holes penetrating downwards inside the connecting block and the tightening block (407).

6. A clamping device for welding a SF6 gas density relay as claimed in claim 1, characterized in that: The curvature of the upper surface of the meter joint fixing seat (303) matches the inner curvature of the meter case of the SF6 gas density relay.

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