An airfoil-shaped busbar insulation clamp and a power distribution cabinet

Abstract

The present invention relates to the technical field of insulating clamps, specifically to a wing-shaped busbar insulating clamp and a distribution cabinet, comprising an insulating clamp base and an insulating clamp cover plate installed on the top of the insulating clamp base, the top surface of the insulating clamp base is provided with an installation groove, the installation groove is used to install multiple wing-shaped busbars, the surface of the wing-shaped busbar is provided with multiple heat dissipation fins, a traction clamp is provided between the insulating clamp base and the insulating clamp cover plate, which is used to prevent the insulating clamp cover plate from falling off, the surface of the insulating clamp base is provided with heat dissipation holes, a pad is provided between two adjacent wing-shaped busbars, and the surface of the pad is provided with a pushing mechanism and a clamping mechanism; the beneficial effect is: the wing-shaped busbar insulating clamp proposed by the present invention is a new product specially designed according to the shape and size of the wing-shaped aluminum alloy busbar, a gap is left between every two rows of wing-shaped aluminum alloy busbars for ventilation and heat dissipation, and the base and cover plate of the insulating clamp are designed separately to facilitate on-site installation.

Description

Technical Field

[0001] The present invention relates to the technical field of insulation clamps, in particular to a wing-shaped busbar insulation clamp and a distribution cabinet. Background Art

[0002] A busbar is a copper or aluminum busbar that connects the main switch in a power supply cabinet to the switches in each branch circuit. It has an insulated surface and serves as a conductor.

[0003] In the existing technology, the original aluminum busbar is rectangular and is produced by rolling or extrusion process. Due to its large size and simple shape, manufacturers will add a lot of scrap materials during production, which will increase the resistivity and the conductive temperature rise. In severe cases, it will affect safe operation. Therefore, wing-shaped aluminum alloy busbars have appeared on the market. They are produced by extrusion process of high-quality raw materials, with added heat dissipation wings. The shape naturally forms an air duct, which greatly reduces the temperature rise and increases the current carrying capacity. The wing-shaped aluminum alloy busbar adopts a connection process without punching and special bolts. The connection speed is fast, does not damage the busbar, and increases the safety operation factor.

[0004] However, the wing-shaped aluminum alloy busbar is a newly designed product, and there are no insulating clip products on the market that meet the shape of this product, resulting in poor heat dissipation effect after the wing-shaped aluminum alloy busbar is stacked and installed. Summary of the Invention

[0005] The object of the present invention is to provide a wing-shaped busbar insulation clamp and a distribution cabinet to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: an wing-shaped busbar insulation clamp, comprising an insulation clamp base and an insulation clamp cover plate installed on the top of the insulation clamp base, the top surface of the insulation clamp base is provided with an installation groove, the installation groove is used to install multiple wing-shaped busbars, and the surface of the wing-shaped busbar is provided with multiple heat dissipation fins, a traction card is provided between the insulation clamp base and the insulation clamp cover plate, which is used to prevent the insulation clamp cover plate from falling off and limiting the position, the surface of the insulation clamp base is provided with heat dissipation holes, a pad is provided between two adjacent wing-shaped busbars, and the surface of the pad is provided with a pushing mechanism and a clamping mechanism. When the wing-shaped busbars are stacked, the pushing mechanism descends and pushes the clamping mechanism to clamp the side wall of the installation groove to achieve the limitation of the pad.

[0007] Preferably, the insulating clamp base is a "convex" shaped plate structure, and a rubber gasket is fixed on the top surface of the insulating clamp base, and the rubber gasket is a square ring structure. A positioning slot is opened on the top surface of the insulating clamp base, and the positioning slot is a "cross" shaped slot. The positioning slot is located in the inner ring mouth of the rubber gasket. A positioning plug is fixed on the bottom surface of the insulating clamp cover, and the positioning plug is a "cross" shaped plate structure. The positioning plug and the positioning slot correspond one to one. After the insulating clamp cover is covered on the top of the insulating clamp base, the positioning plug is inserted into the positioning slot.

[0008] Preferably, two groups of traction clamps are provided, and the two groups of traction clamps are symmetrically distributed about the center of the bottom surface of the insulating clamp cover.

[0009] Preferably, the traction card includes a side groove, a card slot, a card strip, an elastic traction plate and a pull ring. The side groove is opened on the top surface of the insulating clamp base, and a card slot is opened on the side wall of the side groove. The card slot is a square groove, and the card strip is inserted into the card slot. The card strip is a right-angled trapezoidal strip, and the inclined surface of the card strip faces downward. The card strip is fixed on the surface of the elastic traction plate, the elastic traction plate is fixed on the bottom surface of the insulating clamp cover plate, and the pull ring is fixed on the surface of the elastic traction plate. The pull ring and the card strip are symmetrically distributed about the elastic traction plate.

[0010] Preferably, the mounting groove is a "cross"-shaped groove, and a plurality of mounting grooves are provided. The plurality of mounting grooves are arranged and distributed along the long side of the top surface of the insulating clamp base, and the heat dissipation hole member is located between two adjacent mounting grooves.

[0011] Preferably, the heat dissipation hole component includes a through opening and a through hole. The through opening is provided on the surface of the insulating clip base. Two relatively large side walls of the through opening are provided with a plurality of through holes. The through holes pass through the mounting groove and the through opening.

[0012] Preferably, the squeezing and pushing mechanism includes a reserved slot, a guide slot, a pressure block, a traction piece, a perforation, a guide bar, a spring and a lifting slide slot, the reserved slot is a square slot, the long side length of the reserved slot is equal to the long side length of the pad, the reserved slot is provided with two groups, the two groups of reserved slots are respectively opened on the top surface of the pad and the bottom surface of the pad, the guide slot is a square slot, the guide slot is opened on the reserved slot on the top surface of the pad, the pressure block is movably inserted in the guide slot, and the traction piece is provided with two groups, the two groups of traction pieces are symmetrically distributed about the pressure block, and the two groups of traction pieces are fixed on the surface of the pressure block, the perforation is opened on the surface of the traction piece, the guide bar is a "T"-shaped column structure, the bottom end of the guide bar passes through the perforation and is fixed on the bottom surface of the lifting slide slot, the lifting slide slot is opened on the bottom surface of the reserved slot, the top plate diameter of the guide bar is larger than the aperture of the perforation, the spring is sleeved on the outside of the rod body of the guide bar, and the spring is fixed between the top plate of the guide bar and the bottom surface of the lifting slide slot.

[0013] Preferably, the clamping mechanism includes a limiting slide, a clamping plate, a rubber gasket, a reserved hole, a clamping protrusion, a through-hole, a blocking bar, a metal spring and a rubber clamping block. The limiting slide is opened on the side wall of the guide slot, and two groups of limiting slides are provided. The two groups of limiting slides are symmetrically distributed about the guide slot. The clamping plate is movably inserted in the limiting slide. The top surface of one end of the clamping plate facing the guide slot is provided with an inclined surface. The pressure block squeezes the inclined surfaces of the two groups of clamping plates at the same time. When the clamping plate is squeezed, it slides along the limiting slide. The rubber gasket is fixed at the other end of the clamping plate. The reserved hole is opened on the surface of the rubber gasket. The clamping protrusion passes through the reserved hole and is fixed to the other end of the clamping plate, and the length of the clamping protrusion is less than the depth of the reserved hole.

[0014] Preferably, the through-hole is opened on the surface of the clamping plate, and the baffle is fixed on the inner wall of the limiting slide groove after passing through the through-hole. A metal spring is fixed on the surface of the baffle, and the metal spring is in the form of a "U"-shaped strip. The two side plates of the metal spring are in the form of arc-shaped curved strips, and one end of the metal spring is fixed on the side wall of the through-hole, and the rubber clamp is fixed between the metal spring and the baffle.

[0015] A power distribution cabinet comprises the wing-shaped busbar insulation clamp.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The wing-shaped busbar insulation clamp proposed in the present invention is a new product specially designed according to the shape and size of the wing-shaped aluminum alloy busbar. A gap is left between every two rows of wing-shaped aluminum alloy busbars for ventilation and heat dissipation. The base and cover of the insulation clamp are designed separately to facilitate on-site installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the present invention;

[0019] Figure 2 This is a structural schematic diagram of the insulating clamp base of the present invention;

[0020] Figure 3 This is a schematic diagram of the insulating clamp cover structure of the present invention;

[0021] Figure 4 for Figure 3 A schematic diagram of the structure at center A;

[0022] Figure 5 This is a schematic diagram of the heat dissipation fin installation structure of the airfoil busbar of the present invention;

[0023] Figure 6 This is a schematic diagram of the airfoil busbar structure of the present invention;

[0024] Figure 7 This is a schematic diagram of the cushion structure of the present invention;

[0025] Figure 8 This is a schematic diagram of the structure of the cushion block of the present invention after the corners are cut open;

[0026] Figure 9 for Figure 8 A magnified schematic diagram of the structure at point B in the middle;

[0027] Figure 10 This is a schematic diagram of the guide slot structure of the present invention;

[0028] Figure 11 It is a schematic diagram of the clamping plate structure of the present invention.

[0029] In the figure: insulating clamp base 1, insulating clamp cover 2, mounting groove 3, wing-shaped busbar 4, pad 5, through-port 6, through-hole 7, side groove 8, card slot 9, card strip 10, elastic traction plate 11, pull ring 12, rubber gasket 13, positioning slot 14, positioning insert 15, reserved slot 16, guide slot 17, limiting slide 18, clamping plate 19, rubber gasket 20, reserved hole 21, clamping protrusion 22, through-port 23, baffle 24, metal spring 25, rubber clamp block 26, pressure block 27, traction piece 28, through-hole 29, guide strip 30, spring 31, silicone gasket 32, lifting slide 33. DETAILED DESCRIPTION

[0030] In order to clearly and completely describe the objectives and technical solutions of the present invention and make the advantages more clearly understood, the embodiments of the present invention are further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present invention, not all of them, and are only used to explain the embodiments of the present invention, not to limit the embodiments of the present invention. All other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0031] Example 1

[0032] See also Figure 1 、 Figure 2 、 Figure 5 as well as Figure 6 The present invention provides a technical solution: an wing-shaped busbar insulation clamp, comprising an insulation clamp base 1 and an insulation clamp cover plate 2 installed on the top of the insulation clamp base 1. The top surface of the insulation clamp base 1 is provided with a mounting groove 3, the mounting groove 3 is used to install multiple wing-shaped busbars 4, and the surface of the wing-shaped busbar 4 is provided with multiple heat dissipation fins. A traction clamp is provided between the insulation clamp base 1 and the insulation clamp cover plate 2, which is used to prevent the insulation clamp cover plate 2 from falling off and limiting the position. The surface of the insulation clamp base 1 is provided with heat dissipation holes. A pad 5 is provided between two adjacent wing-shaped busbars 4. The surface of the pad 5 is provided with a pushing mechanism and a clamping mechanism. When the wing-shaped busbars 4 are stacked, the pushing mechanism descends and pushes the clamping mechanism to clamp the side wall of the mounting groove 3 to limit the pad 5. The new product is specially designed according to the shape and size of the wing-shaped aluminum alloy busbar. A gap is left between every two rows of wing-shaped aluminum alloy busbars for ventilation and heat dissipation. The base and cover plate of the insulation clamp are designed separately to facilitate on-site installation.

[0033] Example 2

[0034] Refer to the attached Figure 3 and Figure 4On the basis of embodiment 1, in order to realize the quick installation and removal of the insulating clamp base 1 and the insulating clamp cover 2, the insulating clamp base 1 is in a "convex" shaped plate structure, and a rubber gasket 13 is fixed on the top surface of the insulating clamp base 1. The rubber gasket 13 is in a square ring structure. A positioning slot 14 is provided on the top surface of the insulating clamp base 1. The positioning slot 14 is in a "cross" shaped groove. The positioning slot 14 is in the inner ring mouth of the rubber gasket 13. A positioning plug 15 is fixed on the bottom surface of the insulating clamp cover 2. The positioning plug 15 is in a "cross" shaped plate structure. The positioning plug 15 and the positioning slot 14 correspond one to one. After the insulating clamp cover 2 is covered on the top of the insulating clamp base 1, the positioning plug 15 is inserted into the positioning slot 14; there are two groups of traction clamps, and the two groups of traction clamps are about the bottom of the insulating clamp cover 2. The traction card includes a side groove 8, a card groove 9, a card strip 10, an elastic traction plate 11 and a pull ring 12. The side groove 8 is opened on the top surface of the insulating clamp base 1, and a card groove 9 is opened on the side wall of the side groove 8. The card groove 9 is a square groove. The card strip 10 is inserted into the card groove 9. The card strip 10 is a right-angled trapezoidal strip. The inclined surface of the card strip 10 faces downward, and the card strip 10 is fixed on the surface of the elastic traction plate 11. The elastic traction plate 11 is fixed on the bottom surface of the insulating clamp cover plate 2. The pull ring 12 is fixed on the surface of the elastic traction plate 11. The pull ring 12 and the card strip 10 are symmetrically distributed about the elastic traction plate 11; the installation groove 3 is a "cross" shaped groove, and a plurality of installation grooves 3 are provided. The plurality of installation grooves 3 are arranged along the long side of the top surface of the insulating clamp base 1, and the heat dissipation hole member is located between two adjacent installation grooves 3.

[0035] Example 3

[0036] Refer to the attached Figures 7 to 11, on the basis of embodiment 2, in order to realize the limit fixation of the pad 5, the heat dissipation hole member includes a through-hole 6 and a through-hole 7. The through-hole 6 is opened on the surface of the insulating clip base 1, and a plurality of through-holes 7 are opened on the two relatively large side walls of the through-hole 6. The through-hole 7 passes through the mounting slot 3 and the through-hole 6; the squeezing mechanism includes a reserved slot 16, a guide slot 17, a pressure block 27, a traction piece 28, a perforation 29, a guide bar 30, a spring 31 and a lifting slide 33. The reserved slot 16 is a square slot. The long side length of the reserved slot 16 is equal to the long side length of the pad 5. The reserved slot 16 is provided with two groups. The two groups of reserved slots 16 are respectively opened on the top surface of the pad 5 and the bottom surface of the pad 5. The guide slot 17 is a square slot, the guide slot 17 is opened on the reserved slot 16 on the top surface of the pad 5, the pressure block 27 is movably inserted in the guide slot 17, and the traction piece 28 is provided with two groups, the two groups of traction pieces 28 are symmetrically distributed about the pressure block 27, and the two groups of traction pieces 28 are fixed on the surface of the pressure block 27, the perforation 29 is opened on the surface of the traction piece 28, the guide bar 30 is a "T"-shaped column structure, the bottom end of the guide bar 30 passes through the perforation 29 and is fixed to the bottom surface of the lifting chute 33, the lifting chute 33 is opened on the bottom surface of the reserved slot 16, the top plate diameter of the guide bar 30 is larger than the aperture of the perforation 29, the spring 31 is sleeved on the outside of the rod body of the guide bar 30, and the spring 31 is fixed to the guide bar The top plate of 30 and the bottom surface of the lifting slide 33; the clamping mechanism includes a limiting slide 18, a clamping plate 19, a rubber gasket 20, a reserved hole 21, a clamping protrusion 22, a through-hole 23, a stop bar 24, a metal spring 25 and a rubber clamping block 26. The limiting slide 18 is opened on the side wall of the guide slot 17. There are two groups of limiting slides 18. The two groups of limiting slides 18 are symmetrically distributed about the guide slot 17. The clamping plate 19 is movably inserted into the limiting slide 18. The top surface of one end of the clamping plate 19 facing the guide slot 17 is provided with an inclined surface. The pressure block 27 squeezes the inclined surfaces of the two groups of clamping plates 19 at the same time. When the clamping plate 19 is squeezed, it slides along the limiting slide 18. The rubber The gasket 20 is fixed to the other end of the clamping plate 19, and the reserved hole 21 is opened on the surface of the rubber gasket 20. The clamping protrusion 22 passes through the reserved hole 21 and is fixed to the other end of the clamping plate 19, and the length of the clamping protrusion 22 is less than the depth of the reserved hole 21; the through-hole 23 is opened on the surface of the clamping plate 19, and the baffle 24 passes through the through-hole 23 and is fixed to the inner wall of the limiting slide 18. A metal spring 25 is fixed on the surface of the baffle 24. The metal spring 25 is a "U"-shaped strip, and the two side plates of the metal spring 25 are arc-shaped curved strips, and one end of the metal spring 25 is fixed to the side wall of the through-hole 23, and the rubber clamp 26 is fixed between the metal spring 25 and the baffle 24.

[0037] Example 4

[0038] A power distribution cabinet comprises a wing-shaped busbar insulation clamp.

[0039] In actual use, multiple wing-shaped busbars 4 and multiple pads 5 are staggered and stacked in the installation groove 3. The pads 5 and the installation groove 3 are both in a "cross" shape, so the pads 5 will not slide from the installation groove 3. The top surface of the pad 5 and the bottom surface of the pad 5 are both fixed with multiple silicone gaskets 32. The silicone gasket is a "cross" plate structure formed by multiple "T"-shaped pieces. When the wing-shaped busbars 4 are stacked and pressed down, the pressing block 27 is squeezed downward and slides down along the guide slot 17. The pressing block 27 drives the traction piece 28 to squeeze along the guide bar 30. The spring 31 and the pressure block 27 squeeze the two sets of clamping plates 19 to both sides at the same time. The metal spring piece 25 and the rubber clamping block 26 in the through hole 23 on the surface of the clamping plate 19 are squeezed and elastically deformed, and the rubber gasket 20 protrudes from the limiting slide groove 18 and is squeezed on the side wall of the installation groove 3. After the rubber gasket 20 is deformed under pressure, the clamping protrusion 22 protrudes from the reserved hole 21 and is clamped on the side wall of the installation groove 3, so that the installation and fixation of the gasket 5 are achieved. When the upper wing-shaped busbar 4 is pulled out, the spring 31 rebounds and pushes the traction piece 28 along the guide bar 30 The upper slide is reset, and the top plate of the guide bar 30 blocks the traction piece 28 to prevent the traction piece 28 from detaching from the lifting slide 33. The pressure block 27 no longer blocks one end of the clamping plate 19. The metal spring 25 and the rubber clamping block 26 rebound to drive the clamping plate 19 to reset. At this time, the clamping plate 19 lacks braking, and the pad 5 can be pulled out of the mounting groove 3; after the insulating clamp cover 2 is overlapped on the top of the insulating clamp base 1, the elastic traction plate 11 is respectively inserted into the two sets of side grooves 8, and the card strip 10 is inserted into the corresponding card slot 9. At this time, the positioning insert 15 is inserted into the corresponding The insulating clamp cover plate 2 is squeezed into the corresponding positioning slot 14, and the insulating clamp cover plate 2 squeezes the rubber gasket 13 to deform. The resilience of the rubber gasket 13 supports the insulating clamp cover plate 2, so that the card strip 10 and the card slot 9 are clamped and fastened. The pull ring 12 is pinched by hand to pull the elastic traction plate 11 to drive the card strip 10 to be pulled out of the corresponding card slot 9, and the insulating clamp cover plate 2 can be pulled out from the top of the insulating clamp base 1; the reserved groove 16 forms a heat dissipation channel between the wing-shaped busbar 4 and the pad 5, and the through port 6 cooperates with the through hole 7 to form a heat dissipation channel, thereby realizing the diversion and discharge of the hot air inside the installation slot 3.

[0040] While 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 these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A wing-shaped busbar insulation clamp, comprising an insulation clamp base (1) and an insulation clamp cover (2) mounted on the top of the insulation clamp base (1), wherein a mounting groove (3) is provided on the top surface of the insulation clamp base (1), and the mounting groove (3) is used to mount a plurality of wing-shaped busbars (4), and a plurality of heat dissipation fins are mounted on the surface of the wing-shaped busbars (4), characterized in that: A traction clamp is provided between the insulating clamp base (1) and the insulating clamp cover plate (2) for preventing the insulating clamp cover plate (2) from falling off and limiting the position. A heat dissipation hole is provided on the surface of the insulating clamp base (1). A pad (5) is provided between two adjacent wing-shaped busbars (4). A pushing mechanism and a clamping mechanism are provided on the surface of the pad (5). When the wing-shaped busbars (4) are stacked, the pushing mechanism descends to push the clamping mechanism to clamp the side wall of the mounting groove (3), thereby limiting the pad (5).

2. The wing-shaped busbar insulation clamp according to claim 1, characterized in that: The insulating clamp base (1) is in a convex plate-like structure. A rubber gasket (13) is fixed on the top surface of the insulating clamp base (1). The rubber gasket (13) is in a square ring-like structure. A positioning slot (14) is provided on the top surface of the insulating clamp base (1). The positioning slot (14) is in a cross-shaped groove. The positioning slot (14) is located in the inner ring opening of the rubber gasket (13). A positioning insert (15) is fixed on the bottom surface of the insulating clamp cover (2). The positioning insert (15) is in a cross-shaped plate-like structure. The positioning insert (15) and the positioning slot (14) correspond one to one. After the insulating clamp cover (2) is covered on the top of the insulating clamp base (1), the positioning insert (15) is inserted into the positioning slot (14).

3. The wing-shaped busbar insulation clamp according to claim 1, characterized in that: Two groups of traction clamps are provided, and the two groups of traction clamps are symmetrically distributed about the center of the bottom surface of the insulating clamp cover plate (2).

4. The wing-shaped busbar insulation clamp according to claim 1, characterized in that: The traction clamp comprises a side groove (8), a clamping groove (9), a clamping strip (10), an elastic traction plate (11) and a pull ring (12). The side groove (8) is provided on the top surface of the insulating clamp base (1). A clamping groove (9) is provided on the side wall of the side groove (8). The clamping groove (9) is a square groove. The clamping strip (10) is inserted into the clamping groove (9). The clamping strip (10) is a right-angled trapezoidal strip. The inclined surface of the clamping strip (10) faces downward, and the clamping strip (10) is fixed on the surface of the elastic traction plate (11). The elastic traction plate (11) is fixed on the bottom surface of the insulating clamp cover plate (2). The pull ring (12) is fixed on the surface of the elastic traction plate (11). The pull ring (12) and the clamping strip (10) are symmetrically distributed about the elastic traction plate (11).

5. The wing-shaped busbar insulation clamp according to claim 1, characterized in that: The mounting groove (3) is in the shape of a cross, and a plurality of mounting grooves (3) are provided. The plurality of mounting grooves (3) are arranged and distributed along the long side of the top surface of the insulating clamp base (1), and the heat dissipation hole member is located between two adjacent mounting grooves (3).

6. The wing-shaped busbar insulation clamp according to claim 1, characterized in that: The heat dissipation hole component comprises a through opening (6) and a through hole (7), wherein the through opening (6) is provided on the surface of the insulating clamp base (1), and a plurality of through holes (7) are provided on two oppositely distributed side walls of the through opening (6), and the through holes (7) pass through the mounting groove (3) and the through opening (6).

7. The wing-shaped busbar insulation clamp according to claim 1, characterized in that: The squeezing mechanism includes a reserved groove (16), a guide slot (17), a pressure block (27), a traction piece (28), a perforation (29), a guide bar (30), a spring (31) and a lifting slide (33). The reserved groove (16) is a square groove. The length of the long side of the reserved groove (16) is equal to the length of the long side of the pad (5). The reserved groove (16) is provided with two groups. The two groups of reserved grooves (16) are respectively opened on the top surface of the pad (5) and the bottom surface of the pad (5). The guide slot (17) is a square groove. The guide slot (17) is opened on the reserved groove (16) on the top surface of the pad (5). The pressure block (27) is movably plugged into the guide slot (17). The traction piece (28) is provided. There are two groups, and the two groups of traction plates (28) are symmetrically distributed about the pressure block (27). The two groups of traction plates (28) are fixed on the surface of the pressure block (27). The perforation (29) is opened on the surface of the traction plate (28). The guide bar (30) is a "T"-shaped column structure. The bottom end of the guide bar (30) passes through the perforation (29) and is fixed on the bottom surface of the lifting chute (33). The lifting chute (33) is opened on the bottom surface of the reserved groove (16). The top plate diameter of the guide bar (30) is larger than the aperture of the perforation (29). The spring (31) is sleeved on the outside of the rod body of the guide bar (30), and the spring (31) is fixed between the top plate of the guide bar (30) and the bottom surface of the lifting chute (33).

8. The wing-shaped busbar insulation clamp according to claim 6, characterized in that: The clamping mechanism includes a limiting slide (18), a clamping plate (19), a rubber gasket (20), a reserved hole (21), a clamping protrusion (22), a through-hole (23), a stop bar (24), a metal spring (25) and a rubber clamping block (26). The limiting slide (18) is opened on the side wall of the guide slot (17). There are two groups of limiting slides (18). The two groups of limiting slides (18) are symmetrically distributed about the guide slot (17). The clamping plate (19) is movably inserted in the limiting slide (18). The clamping plate ( 19) is provided with an inclined surface on the top surface of one end facing the guide slot (17), and the pressing block (27) squeezes the inclined surfaces of the two groups of clamping plates (19) at the same time. When the clamping plates (19) are squeezed, they slide along the limiting slide groove (18), and the rubber gasket (20) is fixed to the other end of the clamping plate (19). The reserved hole (21) is opened on the surface of the rubber gasket (20), and the clamping protrusion (22) is fixed to the other end of the clamping plate (19) after passing through the reserved hole (21), and the length of the clamping protrusion (22) is less than the depth of the reserved hole (21).

9. The wing-shaped busbar insulation clamp according to claim 8, characterized in that: The through-opening (23) is formed on the surface of the clamping plate (19), and the stop bar (24) is fixed on the inner wall of the limiting slide groove (18) after passing through the through-opening (23). A metal spring (25) is fixed on the surface of the stop bar (24), and the metal spring (25) is in the shape of a "U" strip. The two side plates of the metal spring (25) are in the shape of arc-shaped curved strips, and one end of the metal spring (25) is fixed on the side wall of the through-opening (23). The rubber clamp (26) is fixed between the metal spring (25) and the stop bar (24).

10. A power distribution cabinet, characterized in that: The invention comprises the wing-shaped busbar insulation clamp according to any one of claims 1 to 9.

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