A welding fixture for cable tray or bus duct

Abstract

The present invention belongs to the field of welding fixtures, and specifically is a welding fixture for cable trays or bus ducts, including a fixture main body, on which a rotating mechanism is arranged, the rotating mechanism including multiple groups of fixing frames, the multiple groups of fixing frames are staggered, one side of the fixing frame is fixedly connected to a supporting frame, the other side of the fixing frame is fixedly connected to a rotating rod, the rotating rod is rotatably connected to the inside of the fixture main body, the left and right sides of the rotating rod are both fixedly connected to a second gear, the bottom end of the second gear is meshed with the first gear; through the structural design of the rotating mechanism, during welding, the fixture main body can normally fix non-ladder type cable trays and bus ducts, and at the same time, when welding the ladder type cable tray, the fixing frame located inside the through groove can be rotated to a vertical position, and the ladder support of the ladder type cable tray can be placed on the supporting frame, thereby avoiding the need for manual support, so as to facilitate the welding of the ladder type cable tray, thereby improving the adaptability of the fixture main body.

Description

Technical Field

[0001] The invention relates to the field of welding fixtures, in particular to a welding fixture for a cable bridge or a bus duct. Background Art

[0002] Cable trays and bus ducts are both support equipment for electrical installations and are widely used in power transmission systems. Although there are obvious differences between cable trays and bus ducts, their overall structures are rectangular in design, so the same welding fixture can be used during welding.

[0003] According to the patent document CN202111631064.8, a welding fixture for a cable tray or bus duct is proposed, comprising a rotating bracket and a fixed frame arranged on the rotating bracket, and the fixed frame is rotated by the rotating bracket; the fixed frame comprises an upper working part and a lower working part, and the upper working part and the lower working part can fix the workpiece at the same time; the upper working part and the lower working part are respectively provided with a plurality of groups of working areas, and the plurality of groups of working areas are interconnected and each is provided with a clamping mechanism, and each clamping mechanism is provided with a corresponding moving mechanism, and the clamping mechanism is installed in the corresponding working area through the moving mechanism for movement, and each working area is provided with a sensor; each clamping mechanism can independently clamp the cable tray or bus duct; the invention has a simple structure and is easy to use, and can quickly clamp and fix the cable tray or bus duct at various angles and perform welding, thereby improving production efficiency while reducing costs and saving a lot of labor.

[0004] However, although the welding fixture in the above technology can clamp and fix both sides of most cable trays and bus ducts, for ladder-type cable trays, the ladder-type cable tray uses multiple sets of ladder supports to fix two sets of side panels together. Therefore, before welding, the ladder-type cable tray cannot be fixed as a whole, and the ladder supports and side panels need to be supported and fixed separately. Due to the lack of a structure to support the ladder supports, the position of the ladder supports needs to be manually supported and fixed when welding the ladder-type cable tray, which is inconvenient during welding. Therefore, in view of the above problems, a welding fixture for cable trays or bus ducts is proposed. Summary of the invention

[0005] In order to solve the problem that the welding fixture in the above technology can clamp and fix both sides of most cable trays and bus ducts, for a ladder-type cable tray, the ladder-type cable tray fixes two sets of side panels together through multiple sets of ladder supports. Therefore, before welding, the ladder-type cable tray cannot be fixed as a whole, and the ladder supports and side panels need to be supported and fixed separately. Due to the lack of a structure to support the ladder supports, the position of the ladder supports needs to be manually supported and fixed when welding the ladder-type cable tray, which is inconvenient during welding. The present invention proposes a welding fixture for a cable tray or a bus duct.

[0006] The technical solution adopted by the present invention to solve its technical problems is as follows: A welding fixture for a cable tray or busbar, including a fixture main body, a rotating mechanism is provided on the fixture main body, the rotating mechanism includes multiple groups of fixing frames, the multiple groups of fixing frames are distributed in a staggered manner, one side of the fixing frame is fixedly connected to a support frame, the other side of the fixing frame is fixedly connected to a rotating rod, the rotating rod is rotatably connected to the inside of the fixture main body, both the left and right sides of the rotating rod are fixedly connected with second gears, the bottom end of the second gear meshes with the first gear, a driving gear is fixedly connected to the first gear, both the driving gear and the first gear are rotatably connected to a gear rack, the gear rack is fixedly connected to the bottom end of the fixture main body, one side of the driving gear meshes with a fixed toothed plate, the fixed toothed plate is fixedly connected to a connecting rod, the connecting rod is fixedly connected to a connecting plate, the top end of the connecting plate is fixedly connected to the bottom end of a top block, the top end of the top block penetrates the bottom end of the fixture main body, the bottom end of the top block is fixedly connected with a first spring and a fixed rod, the bottom end of the first spring is fixedly connected to a fixed block, the fixed rod penetrates the fixed block, the fixed block is fixedly connected to two support blocks, and the top ends of the support blocks are fixedly connected to the bottom end of the fixture main body.

[0007] Preferably, a clamping mechanism is provided on the fixture main body, the clamping mechanism includes a clamping plate, the clamping plate is slidably connected to the inside of a receiving groove, the receiving groove is opened on both sides of the inner wall of the fixture main body, the clamping plate is fixedly connected to a connecting rod, the side of the connecting rod away from the clamping plate is fixedly connected to a guiding rod, a second spring is sleeved on the guiding rod, both sides of the second spring are respectively fixedly connected to the fixture main body and the guiding rod, the guiding rod is designed in a T shape, the connecting rod is designed in a 冂 shape, an abutting block is fixedly connected to the connecting rod, and the bottom end of the abutting block is designed in a trapezoid shape.

[0008] Preferably, a through groove is opened on the fixture main body, the through groove is designed in a long rectangular shape, and an arc surface is opened on the side of the support frame away from the fixing frame.

[0009] Preferably, the top end of the top block is designed in a trapezoid shape, and the bottom end of the fixed rod is designed in a T shape.

[0010] Preferably, four groups of limiting blocks are fixedly connected to the position near the top end of the inner wall of the fixture main body, and the limiting blocks are designed in a long rectangular shape.

[0011] Preferably, the side of the connecting plate near the support block is designed in an L shape, two sliding grooves are opened on the side of the connecting plate, and a fixing plate is slidably connected to the inside of the sliding grooves, and the fixing plate is fixedly connected to the support block.

[0012] Preferably, three groups of insertion rods are inserted into the connecting plate, and the top ends of the insertion rods are fixedly connected to the bottom end of the clamp body.

[0013] Preferably, the bottom end of the clamp body is fixedly connected to a fixed bottom plate, the fixed bottom plate is designed to be an elongated rectangle, the left and right sides of the fixed bottom plate are not in contact with the connecting plate, and the top end of the fixed bottom plate is in contact with the bottom end of the fixing frame.

[0014] Preferably, a plurality of groups of support pads are fixedly connected to the clamp body, the support pads are located between two adjacent groups of fixing frames, and the top ends of the support pads are kept level with the top ends of the mounting plates.

[0015] Preferably, the mounting plate is fixedly connected to the fixture body, and an arc-shaped groove corresponding to the second gear is formed at the bottom end of the mounting plate.

[0016] The present invention is beneficial in that:

[0017] 1. The present invention adopts the structural design of the rotating mechanism. During welding, the clamp body can normally fix the non-ladder type cable tray and the bus duct. At the same time, during welding of the ladder type cable tray, the fixing frame located inside the through groove can be rotated to a vertical position, and the ladder support of the ladder type cable tray can be placed on the supporting frame, thereby avoiding the need for manual support, so as to facilitate the welding of the ladder type cable tray, thereby improving the adaptability of the clamp body and solving the problem that the welding clamp in the prior art can clamp and fix both sides of most cable trays and bus ducts, but for the ladder type cable tray, the ladder type cable tray uses multiple groups of ladder supports to fix two groups of side panels together. Therefore, before welding, the ladder type cable tray cannot be fixed as a whole, and the ladder support and the side panels need to be supported and fixed separately. Due to the lack of a structure to support the ladder support, it is necessary to manually support and fix the position of the ladder support when welding the ladder type cable tray, which is inconvenient during welding.

[0018] 2. Through the structural design of the clamping mechanism of the present invention, after the non-ladder type bridge or bus duct is completely pulled out from the inside of the clamp body, the top of the top block is no longer squeezed and will be reset under the action of the first spring. The first gear will drive the second gear to rotate in the opposite direction, and the fixed frame fixed on the rotating rod will rotate to a vertical state. When the fixed frame rotates, it will abut against the abutment block and push the connecting rod to move. The clamping plate fixed on one side of the connecting rod will extend from the receiving groove. When the fixed frame rotates to a vertical state, the clamping plate will maintain a certain distance from the inner wall of the clamp body. At this time, the side plate of the ladder type bridge can be inserted between the clamping plate and the inner wall of the clamp body, thereby supporting and fixing the side plate of the ladder type bridge during welding.

[0019] 3. The present invention adopts the structural design of the limit block, and the limit block is fixed on the inner wall of the clamp body near the top, which can limit the top of the non-ladder type bridge or bus duct during welding, ensuring that the non-ladder type bridge or bus duct inside the clamp body will not be lifted up by the two groups of top blocks. The non-ladder type bridge and bus duct can slide smoothly inside the clamp body and be pulled out from the inside of the clamp body. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0022] Figure 2 It is a structural schematic diagram of the back end of the present invention;

[0023] Figure 3 It is a structural schematic diagram of the bottom end of the clamp body of the present invention;

[0024] Figure 4 It is a structural schematic diagram of the rotating mechanism of the present invention;

[0025] Figure 5 It is a schematic diagram of the connection structure of the connection plate of the present invention;

[0026] Figure 6 It is a structural schematic diagram of the clamping mechanism of the present invention;

[0027] Figure 7 It is a schematic diagram of the connection structure of the connecting rod of the present invention;

[0028] Figure 8 It is a schematic structural diagram of the inner wall of the clamp body of the present invention.

[0029] In the figure: 1. clamp body; 21. top block; 22. first spring; 23. fixed rod; 24. fixed block; 25. support block; 26. fixed plate; 27. sliding groove; 28. connecting plate; 29. ​​insertion rod; 30. connecting rod; 31. fixed tooth plate; 32. driving gear; 33. first gear; 34. second gear; 35. gear frame; 36. rotating rod; 37. mounting plate; 38. fixed frame; 39. support frame; 40. through groove; 42. fixed bottom plate; 43. support pad; 45. clamping plate; 46. connecting rod; 47. abutment block; 48. guide rod; 49. second spring; 50. storage groove; 51. limit block. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Embodiment 1

[0031] See also Figure 1 - Figure 8 As shown, a welding fixture for a cable tray or bus duct includes a fixture body 1, on which a rotating mechanism is provided, the rotating mechanism includes a plurality of fixed frames 38, the plurality of fixed frames 38 are staggered, one side of the fixed frame 38 is fixedly connected to a support frame 39, the other side of the fixed frame 38 is fixedly connected to a rotating rod 36, the rotating rod 36 is rotatably connected to the inside of the fixture body 1, the left and right sides of the rotating rod 36 are fixedly connected to a second gear 34, the bottom end of the second gear 34 is meshed with a first gear 33, the first gear 33 is fixedly connected to a driving gear 32, the driving gear 32 and the first gear 33 are both rotatably connected to a gear frame 35. On the top, the gear frame 35 is fixedly connected to the bottom end of the clamp body 1, one side of the driving gear 32 is meshed with the fixed tooth plate 31, the fixed tooth plate 31 is fixedly connected to the connecting rod 30, the connecting rod 30 is fixedly connected to the connecting plate 28, the top end of the connecting plate 28 is fixedly connected to the bottom end of the top block 21, the top end of the top block 21 passes through the bottom end of the clamp body 1, the bottom end of the top block 21 is fixedly connected with the first spring 22 and the fixed rod 23, the bottom end of the first spring 22 is fixedly connected to the fixed block 24, the fixed rod 23 passes through the fixed block 24, the fixed block 24 is fixedly connected to the two groups of support blocks 25, and the top end of the support block 25 is fixedly connected to the bottom end of the clamp body 1;

[0032] Through the structural design of the rotating mechanism, during welding, the fixture body 1 can normally fix the non-ladder type bridge and bus duct. At the same time, when welding the ladder type bridge, the fixing frame 38 inside the through groove 40 can rotate to the vertical position, and the ladder braces of the ladder type bridge can be placed on the support frame 39, thus avoiding the need for manual support to facilitate the welding of the ladder type bridge, and further improving the adaptability of the fixture body 1. During work, when welding a non-ladder type bridge or bus duct, first, the non-ladder type bridge and bus duct are pushed along one side of the fixture body 1 into the interior of the fixture body 1. During the pushing process, the bottom end of the non-ladder type bridge or bus duct will abut against the top end of the top block 21 and push the top block 21 downward. A fixing rod 23 is fixed to the bottom end of the top block 21, and the first spring 22 sleeved on the fixing rod 23 will be compressed. The bottom end of the top block 21 is connected to the connecting plate 28, so it will drive the connecting plate 28 to move downward. Both sides of the connecting plate 28 are connected to the fixed toothed plate 31 through the connecting rod 30. When the fixed toothed plate 31 moves downward, it will drive the driving gear 32 to rotate. The driving gear 32 is connected to the first gear 33 and installed on the gear rack 35. The driving gear 32 will drive the first gear 33 to rotate synchronously. The top end of the first gear 33 meshes with the second gear 34 and drives the second gear 34 to rotate. The second gear 34 is fixed on the rotating rod 36, and the rotating rod 36 will rotate inside the fixture body 1. At this time, multiple groups of fixing frames 38 fixed on the rotating rod 36 will rotate and be received inside the through groove 40 to prevent the fixing frame 38 from blocking the non-ladder type bridge or bus duct during welding. At the same time, when welding the ladder type bridge, since the bottom ends of the ladder type bridge are connected together through multiple groups of ladder braces, the ladder type bridge will not squeeze the top block 21. Multiple groups of fixing frames 38 fixed on the rotating rod 36 will be in a vertical state. At this time, the ladder braces of the ladder type bridge can be placed in the support frame 39 to facilitate the support and fixation of the ladder braces and facilitate welding.

[0033] Furthermore, a clamping mechanism is provided on the fixture body 1. The clamping mechanism includes a clamping plate 45. The clamping plate 45 is slidably connected inside the receiving groove 50. The receiving groove 50 is opened on both sides of the inner wall of the fixture body 1. The clamping plate 45 is fixedly connected to the connecting rod 46. The side of the connecting rod 46 away from the clamping plate 45 is fixedly connected to the guide rod 48. A second spring 49 is sleeved on the guide rod 48. Both sides of the second spring 49 are fixedly connected to the fixture body 1 and the guide rod 48 respectively. The guide rod 48 is designed in a T shape, the connecting rod 46 is designed in a 冂 shape, and an abutting block 47 is fixedly connected to the connecting rod 46. The bottom end of the abutting block 47 is designed in a trapezoid shape;

[0034] When the non-ladder bridge or bus duct is completely pulled out from the inside of the clamp body 1, the top end of the top block 21 is no longer squeezed and reset under the action of the first spring 22. The first gear 33 drives the second gear 34 to rotate in the opposite direction, and the fixing frame 38 fixed on the rotating rod 36 is rotated to a vertical state. When the fixing frame 38 rotates, it abuts against the abutment block 47 and pushes the connecting rod 46 to move. The clamping plate 45 fixed on one side of the connecting rod 46 will extend out of the storage groove 50. When the fixing frame 38 is rotated to a vertical state, the clamping plate 45 will maintain a certain distance from the inner wall of the clamp body 1. At this time, the side plate of the ladder bridge can be inserted between the clamping plate 45 and the inner wall of the clamp body 1, thereby supporting and fixing the side plate of the ladder bridge during welding. During operation, after the non-ladder bridge or bus duct inside the clamp body 1 is pulled out, the bottom end of the top block 21 will move upward under the action of the first spring 22, and the fixed tooth plate 31 will drive The driving gear 32 rotates in the opposite direction, and the first gear 33 drives the second gear 34 to rotate in the opposite direction, so that the fixing frame 38 stored in the through slot 40 can rotate together with the rotating rod 36 until the fixing frame 38 rotates to a vertical state. When the fixing frame 38 rotates, it abuts against the abutment block 47 and pushes the connecting rod 46 to slide on the clamp body 1. The connecting rod 46 is connected to the clamping plate 45, so the clamping plate 45 is pulled out from the storage slot 50. When 38 is rotated to a vertical state, the clamping plate 45 will completely extend from the inside of the receiving groove 50 and maintain a certain distance from the inner wall of the clamp body 1. At this time, the side panels of the ladder-type bridge can be inserted between the clamping plate 45 and the inner wall of the clamp body 1 to support and fix the side panels. When welding a non-ladder-type bridge or bus duct, the clamping plate 45 will be received in the receiving groove 50 and the clamping plate 45 can also clamp and fix the side of the non-ladder-type bridge or bus duct.

[0035] Furthermore, a through slot 40 is provided on the fixture body 1, and the through slot 40 is designed to be a long rectangle, and a curved surface is provided on the side of the support frame 39 away from the fixing frame 38;

[0036] During operation, a through slot 40 is provided on the fixture body 1 to accommodate the fixing frame 38 and the supporting frame 39 . An arc surface is provided on the supporting frame 39 to prevent the fixing frame 38 from abutting against the inner wall of the through slot 40 when rotating, thereby ensuring that the supporting frame 39 can rotate normally in the through slot 40 .

[0037] Furthermore, the top end of the top block 21 is designed in a trapezoidal shape, and the bottom end of the fixing rod 23 is designed in a T-shape;

[0038] When working, the top end of the top block 21 is designed in a ladder shape so that the top block 21 can be pushed smoothly and move downward. The bottom end of the fixing rod 23 is designed in a T shape. When the first spring 22 is in the original length state, the bottom end of the fixing rod 23 will abut against the bottom end of the fixing block 24, thereby preventing the top block 21 from being pulled upward.

[0039] Furthermore, four groups of limit blocks 51 are fixedly connected to the inner wall of the clamp body 1 near the top, and the limit blocks 51 are designed in a long rectangular shape;

[0040] During operation, through the structural design of the limit block 51, the limit block 51 is fixed on the inner wall of the clamp body 1 near the top, and can limit the top of the non-ladder bridge or bus duct during welding, ensuring that the non-ladder bridge or bus duct inside the clamp body 1 will not be lifted up by the two sets of top blocks 21, and the non-ladder bridge and bus duct can slide smoothly inside the clamp body 1 and be pulled out from the inside of the clamp body 1.

[0041] Furthermore, the side of the connecting plate 28 close to the supporting block 25 is L-shaped, and two sets of sliding grooves 27 are opened on the side of the connecting plate 28. The interior of the sliding groove 27 is slidably connected to the fixing plate 26, and the fixing plate 26 is fixedly connected to the supporting block 25;

[0042] During operation, a sliding groove 27 is provided on the connecting plate 28, and a fixed plate 26 slides inside the sliding groove 27, so that the movement of the connecting plate 28 is guided by the contact between the inner wall of the sliding groove 27 and the fixed plate 26, thereby ensuring the stability of the connecting plate 28 during movement.

[0043] Furthermore, three groups of insertion rods 29 are inserted on the connecting plate 28, and the top ends of the insertion rods 29 are fixedly connected to the bottom ends of the clamp body 1;

[0044] During operation, the insertion rod 29 is inserted into the connecting plate 28 , which can improve the stability of the connecting plate 28 when moving, and at the same time limit the connecting plate 28 to move only in the vertical direction, thereby ensuring the correct engagement of the fixed tooth plate 31 with the driving gear 32 .

[0045] Furthermore, the bottom end of the clamp body 1 is fixedly connected with a fixed bottom plate 42, which is designed to be a long rectangle, and the left and right sides of the fixed bottom plate 42 are not in contact with the connecting plate 28, and the top end of the fixed bottom plate 42 is in contact with the bottom end of the fixing frame 38;

[0046] During operation, the fixed bottom plate 42 is fixed to the bottom end of the clamp body 1 and fits with the bottom end of the fixing frame 38 . When the fixing frame 38 is received in the through slot 40 , the fixed bottom plate 42 can prevent the fixing frame 38 from continuing to rotate. Embodiment 2

[0047] See also Figure 2 and Figure 4 As shown, comparative example 1 is another embodiment of the present invention, a plurality of groups of support pads 43 are fixedly connected to the clamp body 1, and the support pads 43 are located between two adjacent groups of fixing frames 38, and the top of the support pads 43 is kept level with the top of the mounting plate 37;

[0048] During operation, the support pad 43 can provide support for the bottom end of the non-ladder bridge or bus duct. The support pads 43 located on the far left and far right have inclined surfaces on their top ends to avoid abutment with the bottom ends of the non-ladder bridge or bus duct, thereby ensuring that the non-ladder bridge or bus duct can be smoothly pushed into the fixture body 1.

[0049] The mounting plate 37 is fixedly connected to the fixture body 1, and an arc-shaped groove corresponding to the second gear 34 is formed at the bottom end of the mounting plate 37;

[0050] During operation, the mounting plate 37 is fixed on the fixture body 1 and is located directly above the second gear 34 , which can provide protection for the top of the second gear 34 to reduce external interference to the second gear 34 during rotation, so as to facilitate normal rotation of the second gear 34 .

[0051] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A welding fixture for a cable tray or a bus duct, comprising a fixture body (1), characterized in that: A rotating mechanism is provided on the fixture body (1). The rotating mechanism includes multiple sets of fixing brackets (38), and the multiple sets of fixing brackets (38) are staggered. One side of the fixing bracket (38) is fixedly connected to a support bracket (39), and the other side of the fixing bracket (38) is fixedly connected to a rotating rod (36). The rotating rod (36) is rotatably connected inside the fixture body (1). Both the left and right sides of the rotating rod (36) are fixedly connected to a second gear (34). The bottom end of the second gear (34) meshes with a first gear (33). A driving gear (32) is fixedly connected to the first gear (33). Both the driving gear (32) and the first gear (33) are rotatably connected to a gear bracket (35). The gear bracket (35) is fixedly connected to the bottom end of the fixture body (1). One side of the driving gear (32) meshes with a fixed toothed plate (31). The fixed toothed plate (31) is fixedly connected to a connecting rod (30). The connecting rod (30) is fixedly connected to a connecting plate (28). The top end of the connecting plate (28) is fixedly connected to the bottom end of a top block (21). The top end of the top block (21) penetrates the bottom end of the fixture body (1). The bottom end of the top block (21) is fixedly connected to a first spring (22) and a fixed rod (23). The bottom end of the first spring (22) is fixedly connected to a fixed block (24). The fixed rod (23) penetrates the fixed block (24). The fixed block (24) is fixedly connected to two support blocks (25). The top ends of the support blocks (25) are fixedly connected to the bottom end of the fixture body (1).

2. A welding fixture for a cable tray or bus duct according to claim 1, characterized in that: A clamping mechanism is provided on the fixture body (1). The clamping mechanism includes a clamping plate (45). The clamping plate (45) is slidably connected inside a receiving groove (50). The receiving groove (50) is opened on both sides of the inner wall of the fixture body (1). The clamping plate (45) is fixedly connected to a connecting rod (46). The side of the connecting rod (46) away from the clamping plate (45) is fixedly connected to a guiding rod (48). A second spring (49) is sleeved on the guiding rod (48). Both sides of the second spring (49) are respectively fixedly connected to the fixture body (1) and the guiding rod (48). The guiding rod (48) is designed in a T shape. The connecting rod (46) is designed in a U shape. An abutting block (47) is fixedly connected to the connecting rod (46). The bottom end of the abutting block (47) is designed in a trapezoid shape.

3. A welding fixture for a cable tray or bus duct according to claim 1, characterized in that: A through groove (40) is opened on the fixture body (1). The through groove (40) is designed in a long rectangular shape. An arc surface is opened on the side of the support bracket (39) away from the fixing bracket (38).

4. A welding fixture for a cable tray or bus duct according to claim 1, characterized in that: The top end of the top block (21) is designed in a trapezoid shape. The bottom end of the fixed rod (23) is designed in a T shape.

5. A welding fixture for a cable tray or bus duct according to claim 4, characterized in that: Four groups of limiting blocks (51) are fixedly connected to the position near the top end of the inner wall of the fixture body (1). The limiting blocks (51) are designed in a long rectangular shape.

6. A welding fixture for a cable tray or bus duct according to claim 1, characterized in that: The side of the connecting plate (28) close to the supporting block (25) is L-shaped, and two sets of sliding grooves (27) are provided on the side of the connecting plate (28). The interior of the sliding groove (27) is slidably connected to a fixing plate (26), and the fixing plate (26) is fixedly connected to the supporting block (25).

7. A welding fixture for a cable tray or bus duct according to claim 6, characterized in that: Three groups of insertion rods (29) are inserted on the connecting plate (28), and the top ends of the insertion rods (29) are fixedly connected to the bottom ends of the clamp body (1).

8. A welding fixture for a cable tray or bus duct according to claim 7, characterized in that: The bottom end of the clamp body (1) is fixedly connected to a fixed bottom plate (42), the fixed bottom plate (42) is designed to be a long rectangle, the left and right sides of the fixed bottom plate (42) are not in contact with the connecting plate (28), and the top end of the fixed bottom plate (42) is in contact with the bottom end of the fixing frame (38).

9. A welding fixture for a cable tray or bus duct according to claim 8, characterized in that: A plurality of groups of support pads (43) are fixedly connected to the clamp body (1); the support pads (43) are located between two adjacent groups of fixing frames (38); and the top ends of the support pads (43) are kept level with the top ends of the mounting plates (37).

10. A welding fixture for a cable tray or bus duct according to claim 9, characterized in that: The mounting plate (37) is fixedly connected to the clamp body (1), and an arc-shaped groove corresponding to the second gear (34) is formed at the bottom end of the mounting plate (37).

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