Welding fixture for rotating shaft of circuit breaker

Abstract

The utility model relates to a circuit breaker rotating shaft welding clamp which comprises a base, and a shaft clamping mechanism and at least one cantilever clamping mechanism are arranged on the base. The shaft clamping mechanism is suitable for vertically pressing a main shaft on the base, and the cantilever clamping mechanism is suitable for vertically pressing a connecting block in a cantilever on the base; the cantilever clamping mechanism comprises a first positioning block, a positioning pin and a pressing plate mechanism. The main shaft and the cantilever can be rapidly clamped and pre-fixed on the base, the connecting block in the cantilever can be firstly positioned and then pressed, it is ensured that the position of the connecting block on the base is accurate, the two arm plates are clamped on the first positioning block through the frame, it is ensured that the positions of the arm plates are accurate, and finally it is ensured that the cantilever is accurately welded on the main shaft, and the welding process is stable and reliable.

Description

Technical Field

[0001] The utility model relates to the field of clamps, in particular to a welding clamp for a rotating shaft of a circuit breaker. Background Art

[0002] like Figure 1 The circuit breaker shaft 1 shown includes a main shaft 11, three cantilevers 12 and three connecting parts. The main shaft 11 includes a round shaft 11-2 and a square shaft 11-1 at the end. The cantilever 12 includes a pair of arm plates 12-1, a connecting shaft and a connecting block 12-2 (square block). A connecting hole is provided in the middle of the connecting block 12-2. The connecting block 12-2 is installed at one end of the two arm plates 12-1 through the connecting shaft. The other ends of the two arm plates 12-1 are welded to the round shaft 11-2.

[0003] When the cantilever is welded to the round shaft, the cantilever and the round shaft need to be clamped and pre-fixed, and then the arm plate and the round shaft will be welded through welding equipment. Because the two arm plates themselves have a certain curvature, and the connecting block on the cantilever can rotate around the connecting axis, it is difficult for traditional welding fixtures to position and clamp the cantilever, which affects the welding stability and welding accuracy of the cantilever on the rotating shaft. The rotating shaft is a high-precision product in the circuit breaker and is crucial to the final performance of the circuit breaker. Utility Model Content

[0004] The technical problem to be solved by the utility model is: to overcome the deficiencies of the prior art, to provide a circuit breaker shaft welding fixture, and to solve the technical problem that in the current shaft fixture, it is difficult to clamp and position the cantilever, thereby affecting the welding accuracy of the cantilever on the shaft.

[0005] The technical solution adopted by the utility model to solve its technical problems is:

[0006] A circuit breaker shaft welding fixture is provided, comprising:

[0007] A base, on which a shaft clamping mechanism and at least one cantilever clamping mechanism are arranged;

[0008] The shaft clamping mechanism is suitable for vertically pressing the main shaft on the base, and the cantilever clamping mechanism is suitable for vertically pressing the connecting block in the cantilever on the base;

[0009] The cantilever clamping mechanism comprises a first positioning block, a positioning pin and a pressure plate mechanism;

[0010] The first positioning block is fixedly arranged on the base, and a storage table and a first avoidance groove are formed on the upper end thereof. A pin hole is provided on the storage table, and the main shaft passes through the first avoidance groove. The connecting block is placed on the storage table, and the two arm plates are respectively located on both sides of the first positioning block. The positioning pin passes through the connecting hole of the connecting block and then passes into the pin hole of the first positioning block. The pressing plate mechanism vertically presses the connecting block on the storage table.

[0011] Furthermore, the pressing plate mechanism comprises

[0012] A support plate, which is fixedly connected to the base;

[0013] A double-headed screw, the lower end of which is connected to the support plate, the upper end of which is connected to the locking nut, and the return spring is sleeved on the double-headed screw;

[0014] A support nail, which is arranged on the support plate;

[0015] A pressure plate, the middle of which is passed through the double-headed screw, and the lower end of the pressure plate abuts against the return spring to enable the pressure plate to move elastically up and down. One end of the pressure plate is a crimping end and the other end is a supporting end. The crimping end is suitable for crimping the connecting block, and the supporting end is suitable for cooperating with the supporting nail below.

[0016] Further, the shaft clamping mechanism includes a square shaft clamping mechanism and a round shaft clamping mechanism;

[0017] The square shaft clamping mechanism comprises

[0018] A second positioning block, wherein a square groove is formed on the second positioning block;

[0019] The first quick clamp is suitable for clamping the square shaft in the square groove.

[0020] Furthermore, the circular shaft clamping mechanism includes

[0021] A third positioning block, wherein a V-shaped groove is formed on the third positioning block;

[0022] The second quick clamp is suitable for clamping the round shaft in the V-shaped groove.

[0023] Furthermore, the welding fixture also includes a clamp, and the clamp is suitable for clamping the two arm plates on both sides of the first positioning block.

[0024] Furthermore, the support plate is fixedly connected to the base by connecting screws.

[0025] Furthermore, a bushing is arranged in the pin hole.

[0026] Furthermore, a second avoidance groove is formed in the middle of the crimping end of the pressing plate, and the positioning pin passes through the second avoidance groove.

[0027] The beneficial effects of the utility model are:

[0028] The circuit breaker shaft welding fixture of the utility model can quickly clamp and pre-fix the main shaft and the cantilever on the base, and the connecting block in the cantilever can be positioned and then pressed to ensure that the connecting block is accurately positioned on the base. The two arm plates are clamped on the first positioning block by the frame to ensure that the arm plates are accurately positioned, and finally ensure that the cantilever is accurately welded on the main shaft, and the welding process is stable and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The utility model is further described below in conjunction with the accompanying drawings.

[0030] Figure 1 It is a schematic diagram of the rotating shaft;

[0031] Figure 2 This is a schematic diagram of the welding fixture for the rotating shaft of a circuit breaker of the utility model;

[0032] Figure 3 It is the intention of the square shaft clamping mechanism;

[0033] Figure 4 It is a top view of the cantilever clamping mechanism;

[0034] Figure 5 is a side view of the cantilever clamping mechanism;

[0035] Figure 6 It is a schematic diagram of the circular shaft clamping mechanism;

[0036] Figure 7 It is a schematic diagram of the clamp;

[0037] Among them, 1, rotating shaft, 11, main shaft, 11-1, square shaft, 11-2, round shaft, 12, cantilever, 12-1, arm plate, 12-2, connecting block;

[0038] 2. Base;

[0039] 3. cantilever clamping mechanism, 31. first positioning block, 32. positioning pin, 33. first avoidance groove, 34. bushing;

[0040] 4. Pressing plate mechanism, 41. Supporting plate, 42. Double-headed screw, 43. Locking nut, 44. Reset spring, 45. Supporting pin, 46. Pressing plate, 47. Second avoidance groove;

[0041] 5. square shaft clamping mechanism, 51. second positioning block, 52. square groove, 53. first quick clamp;

[0042] 6. round shaft clamping mechanism, 61. third positioning block, 62. V-shaped groove, 63. second quick clamp;

[0043] 7. Clips. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution of the utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on 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.

[0045] The present application provides a circuit breaker shaft welding fixture, which is described in detail below. It should be noted that the description order of the following embodiments does not limit the preferred order of the embodiments of the present application. In the following embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, please refer to the relevant description of other embodiments.

[0046] In order to solve the technical problem in the prior art that the cantilever is difficult to clamp and position in the current shaft clamp, thereby affecting the welding accuracy of the cantilever on the shaft, an embodiment of the present application provides a circuit breaker shaft welding clamp, which is described in detail below.

[0047] like Figures 1 to 7 As shown, a circuit breaker shaft welding fixture includes

[0048] A base 2, on which a shaft clamping mechanism and three cantilever clamping mechanisms 3 are arranged;

[0049] The shaft clamping mechanism is suitable for vertically pressing the main shaft 11 on the base 2, and the cantilever clamping mechanism 3 is suitable for vertically pressing the connecting block 12-2 in the cantilever 12 on the base 2;

[0050] Specifically, if Figure 4 Figure 5 As shown, the cantilever clamping mechanism 3 includes a first positioning block 31, a positioning pin 32 and a pressing plate mechanism 4;

[0051] The first positioning block 31 is fixedly arranged on the base 2, and a storage table and a first avoidance groove 33 are formed at its upper end. A pin hole is provided on the storage table, and the spindle 11 passes through the first avoidance groove 33. The connecting block 12-2 is placed on the storage table, and the two arm plates 12-1 are respectively located on both sides of the first positioning block 31. The positioning pin 32 passes through the connecting hole of the connecting block 12-2 and then enters the pin hole of the first positioning block 31. The pressing plate mechanism 4 vertically presses the connecting block 12-2 on the storage table.

[0052] In this embodiment, a cone section is formed on the positioning pin 32, and the cone section cooperates with the connecting block 12-2 so that the positioning pin 32 can be located at the center of the connecting hole.

[0053] In this embodiment, a bushing 34 is disposed in the pin hole.

[0054] Specifically, as an optional implementation in this embodiment, Figure 4 Figure 5 As shown, the pressing plate mechanism 4 includes

[0055] A support plate 41, which is fixedly connected to the base 2;

[0056] A double-headed screw 42, whose lower end is connected to the support plate 41, and whose upper end is connected to a locking nut 43, and a return spring 44 is sleeved on the double-headed screw 42;

[0057] Support pins 45, which are arranged on the support plate 41;

[0058] The pressure plate 46 is centrally inserted into the double-headed screw 42, and the lower end of the pressure plate 46 abuts against the return spring 44 to enable the pressure plate 46 to move elastically up and down. One end of the pressure plate 46 is a crimping end, and the other end is a supporting end. The crimping end is suitable for crimping the connecting block 12-2, and the supporting end is suitable for cooperating with the supporting nail 45 below.

[0059] Working principle of the pressure plate mechanism 4: when the pressure plate 46 is needed to press the connecting block 12-2, tighten the locking nut 43 to move the pressure plate 46 downward along the double-headed screw 42, so that the crimping end of the pressure plate 46 presses the connecting block 12-2, and loosen the locking nut 43 so that the pressure plate 46 is lifted upward under the action of the reset spring 44, and the connecting block 12-2 is loosened.

[0060] The shaft clamping mechanism includes a square shaft clamping mechanism 5 and a round shaft clamping mechanism 6;

[0061] Specifically, as an optional implementation in this embodiment, Figure 3 As shown, the square shaft clamping mechanism 5 includes

[0062] A second positioning block 51, wherein a square groove 52 is formed on the second positioning block 51;

[0063] The first quick clamp 53 is suitable for pressing the square shaft 11 - 1 in the square groove 52 .

[0064] Specifically, as an optional implementation in this embodiment, Figure 6 As shown, the circular shaft clamping mechanism 6 includes

[0065] A third positioning block 61, wherein a V-shaped groove 62 is formed on the third positioning block 61;

[0066] The second quick clamp 63 is suitable for pressing the round shaft 11 - 2 in the V-shaped groove 62 .

[0067] The second positioning block 51 and the third positioning block 61 are located on the same axis, and are respectively supported by the square shaft 11 - 1 and the round shaft 11 - 2 of the main shaft 11 .

[0068] The quick clamp is an existing mature product, and its working principle will not be described in detail here.

[0069] Specifically, as an optional implementation in this embodiment, Figure 7 As shown, the welding fixture further includes a clamp 7 , and the clamp 7 is suitable for clamping the two arm plates 12 - 1 on both sides of the first positioning block 31 .

[0070] The main function of the clamp 7 is to lock the two arm plates 12-1. After the arm plates 12-1 are locked, the connection between the circular shaft 11-2 and the arm plates 12-1 is welded, and the position of the arm plates 12-1 on the circular shaft 11-2 is the set position.

[0071] In this embodiment, the support plate 41 is fixedly connected to the base 2 by connecting screws.

[0072] Connecting the support plate 41 with the bottom plate facilitates controlling the position of the pressure plate mechanism 4 on the base 2 so that it can accurately clamp the connection block 12 - 2 .

[0073] In this embodiment, a second avoidance groove 47 is formed in the middle of the crimping end of the pressing plate 46 , and the positioning pin 32 passes through the second avoidance groove 47 .

[0074] The structure of the pressure plate 46 can more comprehensively press the connection block 12 - 2 , maximize the pressing area, and fix the connection block 12 - 2 more reliably.

[0075] Working principle of the circuit breaker shaft welding fixture of the utility model:

[0076] The three cantilevers 12 are sleeved onto the main shaft 11, the square shaft 11-1 of the main shaft 11 is placed in the square groove 52 of the second positioning block 51, and the round shaft 11-2 is placed in the V-shaped groove 62 of the third positioning block 61, and then the square shaft 11-1 and the round shaft 11-2 are clamped respectively by the first quick clamp 53 and the second quick clamp 63;

[0077] The connecting block 12-2 in the cantilever 12 is placed on the storage table of the first positioning block 31, and the positioning pin 32 passes through the connecting hole of the connecting block 12-2 and is inserted into the pin hole of the first positioning block 31 to position the connecting block 12-2. Then, the locking nut 43 is rotated to drive the pressure plate 46 to move downward, and the connecting block 12-2 is pressed by the pressure plate 46; the two arm plates 12-1 in the swing arm are clamped by the clamp 7, so that the two arm plates 12-1 are clamped on both sides of the first positioning block 31.

[0078] After the main shaft 11 and the cantilever 12 are clamped, welding operation can be performed next.

[0079] The circuit breaker shaft welding fixture of the utility model is convenient for clamping the main shaft 11 and the cantilever 12, and can clamp the connecting block 12-2 and the arm plate 12-1 respectively. The connecting block 12-2 is accurately positioned and the clamping is stable and reliable, ensuring that the main shaft 11 finally welded is of qualified quality.

[0080] The various devices selected in this application (components whose specific structures are not described) are all universal standard parts or components known to technical personnel in this field, and their structures and principles can be known to technical personnel through technical manuals or through conventional experimental methods.

[0081] In the description of the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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.

[0082] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship 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 limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0083] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. The device embodiments described above are merely schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some communication interfaces, and the indirect coupling or communication connection of devices or units can be electrical, mechanical or other forms.

[0084] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0085] In addition, each functional unit in each embodiment of the present utility model may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0086] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without deviating from the technical concept of the utility model through the above description. The technical scope of the utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A circuit breaker shaft welding fixture, characterized in that: include A base (2), wherein a shaft clamping mechanism and at least one cantilever clamping mechanism (3) are arranged on the base (2); The shaft clamping mechanism is suitable for vertically pressing the main shaft (11) on the base (2), and the cantilever clamping mechanism (3) is suitable for vertically pressing the connecting block (12-2) in the cantilever (12) on the base (2); The cantilever clamping mechanism (3) comprises a first positioning block (31), a positioning pin (32) and a pressure plate mechanism; The first positioning block (31) is fixedly arranged on the base (2), and a storage table and a first avoidance groove (33) are formed on the upper end of the first positioning block. A pin hole is provided on the storage table, and the main shaft (11) passes through the first avoidance groove (33). The connecting block (12-2) is placed on the storage table, and the two arm plates (12-1) are respectively located on both sides of the first positioning block (31). The positioning pin (32) passes through the connecting hole of the connecting block (12-2) and then enters the pin hole of the first positioning block (31). The pressing plate mechanism vertically presses the connecting block (12-2) on the storage table.

2. The circuit breaker shaft welding fixture according to claim 1, characterized in that: The pressing plate mechanism (4) comprises A support plate (41) fixedly connected to the base (2); A double-headed screw (42), the lower end of which is connected to the support plate (41), the upper end of which is connected to the locking nut (43), and a return spring (44) is sleeved on the double-headed screw (42); A support nail (45) is arranged on the support plate (41); A pressure plate (46) is provided at its middle portion on the double-headed screw (42). The lower end of the pressure plate (46) abuts against a return spring (44) so ​​that the pressure plate (46) can move elastically up and down. One end of the pressure plate (46) is a crimping end and the other end is a supporting end. The crimping end is suitable for crimping the connection block (12-2), and the supporting end is suitable for cooperating with the supporting nail (45) below.

3. The circuit breaker shaft welding fixture according to claim 1, characterized in that: The shaft clamping mechanism comprises a square shaft clamping mechanism (5) and a round shaft clamping mechanism (6); The square shaft clamping mechanism (5) comprises A second positioning block (51), wherein a square groove (52) is provided on the second positioning block (51); A first quick clamp (53), wherein the first quick clamp (53) is suitable for pressing the square shaft (11-1) in the square groove (52).

4. The circuit breaker shaft welding fixture according to claim 3, characterized in that: The circular shaft clamping mechanism (6) comprises A third positioning block (61), wherein a V-shaped groove (62) is formed on the third positioning block (61); A second quick clamp (63), wherein the second quick clamp (63) is suitable for pressing the round shaft (11-2) in the V-shaped groove (62).

5. The circuit breaker shaft welding fixture according to claim 1, characterized in that: The welding fixture further comprises a clamp (7), and the clamp (7) is suitable for clamping the two arm plates (12-1) on both sides of the first positioning block (31).

6. The circuit breaker shaft welding fixture according to claim 2, characterized in that: The support plate (41) is fixedly connected to the base (2) by means of connecting screws.

7. The circuit breaker shaft welding fixture according to claim 1, characterized in that: A bushing (34) is arranged in the pin hole.

8. The circuit breaker shaft welding fixture according to claim 1, characterized in that: A second avoidance groove (47) is formed in the middle of the crimping end of the pressing plate (46), and the positioning pin (32) passes through the second avoidance groove (47).

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