A power distribution device

Abstract

This utility model relates to the field of power distribution technology, and in particular to a power distribution device, including a busbar assembly and a plurality of busbar bolts. The busbar assembly extends along a first direction and includes a plurality of phase rows spaced apart in a vertical direction, and has a plurality of connecting holes penetrating in the vertical direction. The connecting holes penetrate each of the phase rows, and the plurality of connecting holes are sequentially spaced apart along the first direction. There is a first distance L1 between two adjacent connecting holes in a second direction. The busbar bolts pass through the connecting holes to fix and connect each phase row, wherein the first distance L1 is greater than 0. In summary, in this utility model, when the circuit breaker assembly applies a force in the second direction to the phase row assembly, the plurality of spaced connecting holes form multi-point support through the busbar bolts, avoiding stress concentration at a single location, thereby significantly reducing the risk of deformation and damage to the busbar assembly.

Description

Technical Field

[0001] This utility model relates to the field of power distribution technology, and in particular to a power distribution device. Background Technology

[0002] In the field of power distribution technology, side-plug-in busbar power distribution devices are widely used because they offer the advantage of replacing circuit breaker components without disconnecting the isolating switch, ensuring the normal operation of other equipment and strong work continuity. For example, patent application CN119542928A, entitled "A Power Distribution Device and a Method for Replacing Circuit Breakers," describes a busbar assembly comprising a first phase busbar, a second phase busbar, and a third phase busbar extending along a first direction, with each phase busbar spaced vertically. The circuit breaker component is laterally plugged into the phase busbar assembly along a second direction via clamps, achieving electrical connection with the busbar. This structure eliminates the need for power outages when replacing circuit breakers, effectively improving replacement efficiency and work continuity.

[0003] However, in existing side-plug-in busbar distribution systems, the busbar assembly is typically fixed by multiple bolts spaced apart along a first direction (e.g., busbar bolts pass through busbar through holes distributed along the first direction, connecting the busbar body to the busbar base plate). When the circuit breaker assembly is inserted into the busbar from the side via a clamp, the clamp applies a force along a second direction (horizontal direction) to the phase busbar. Because the existing bolts are spaced apart along the first direction, their support and reinforcement effect on the busbar along the second direction is limited. This makes the busbar prone to deformation under the long-term action of the aforementioned horizontal force, and may even cause damage to the busbar due to stress concentration, affecting the structural stability and service life of the distribution system. Utility Model Content

[0004] The purpose of this utility model is to provide a power distribution device to solve the technical problem that side-plug-in busbars are prone to deformation and damage under the action of horizontal plug-in force.

[0005] To achieve the above objectives, this utility model provides a power distribution device, including a busbar assembly and a plurality of busbar bolts. The busbar assembly extends along a first direction and includes a plurality of phase rows spaced apart along a vertical direction, and is provided with a plurality of connecting holes penetrating along a vertical direction. The connecting holes penetrate each of the phase rows, and the plurality of connecting holes are sequentially spaced apart along the first direction. There is a first distance L1 between two adjacent connecting holes along a second direction. The busbar bolts pass through the connecting holes to fix and connect each of the phase rows, wherein the first distance L1 is greater than 0.

[0006] Optionally, the busbar assembly has at least three connection holes, with the connection hole between the first and last connection holes being designated as the intermediate connection hole, which is located on the same side of the two adjacent connection holes along the second direction.

[0007] Optionally, there is a second spacing L2 between the next two adjacent connecting holes along a second direction, wherein the second spacing L2 is 0.

[0008] Optionally, the busbar assembly further includes an upper insulating block, a middle insulating block, and a lower insulating block. The connecting hole passes through the upper insulating block, the middle insulating block, and the lower insulating block. The upper insulating block is located on the top surface of the uppermost phase busbar, the middle insulating block is located between two adjacent phase buses, and the lower insulating block is located on the bottom surface of the lowermost phase busbar.

[0009] Optionally, the upper insulating block includes an upper insulating partition and two upper insulating abutments, the two upper insulating abutments being spaced apart along a second direction on the bottom surface of the upper insulating partition, and the bottom surface of the upper insulating abutments abutting against the top surface of the phase array;

[0010] The middle insulating block includes a middle insulating partition, two first middle insulating abutments, and two second middle insulating abutments. The two first middle insulating abutments are spaced apart along a second direction on the top surface of the middle insulating partition, and the top surface of the first middle insulating abutments abuts against the bottom surface of the upper phase array. The two second middle insulating abutments are spaced apart along a second direction on the bottom surface of the middle insulating partition, and the bottom surface of the second middle insulating abutments abuts against the top surface of the lower phase array.

[0011] The lower insulating block includes a lower insulating partition and two lower insulating abutments. The two lower insulating abutments are spaced apart on the top surface of the lower insulating partition along a second direction, and the bottom surface of the lower insulating abutments abuts against the bottom surface of the phase array.

[0012] Optionally, it also includes multiple upper insulating sleeves, multiple middle insulating sleeves, multiple lower insulating sleeves, and multiple female bolts, wherein the female bolts include a threaded rod and a nut;

[0013] The upper insulating sleeve, the middle insulating sleeve, and the lower insulating sleeve are sleeved on the outside of the screw. The upper insulating sleeve passes through the connecting hole of the upper insulating partition and its bottom surface abuts against the top surface of the uppermost phase row. The middle insulating sleeve passes through the connecting hole of the middle insulating partition and its top and bottom surfaces abut against the bottom surface of the phase row above the middle insulating partition and the top surface of the phase row below the middle insulating partition, respectively. The lower insulating sleeve passes through the connecting hole of the lower insulating partition and its top surface abuts against the bottom surface of the lowermost phase row.

[0014] The nut is located at one end of the screw rod, and the female nut is sleeved on the outside of the screw rod. The screw rod passes through the connecting hole. The nut and the female nut are located on both sides of the busbar assembly in the vertical direction. One of the nut and the female nut applies pressure to the upper insulating sleeve, and the other applies pressure to the lower insulating sleeve.

[0015] Optionally, it also includes a base and multiple busbar washers. The base extends along a first direction and includes a pad and a support. The support is located on the bottom surface of the pad, and the pad is located on the bottom surface of the lower insulating partition. The pad has multiple through holes in the vertical direction, and each hole corresponds to a connection hole. The lower insulating sleeve passes through the through holes, and the pad abuts against the lower insulating sleeve. The busbar washers are fitted on the outside of the screw and are located on the top surface of the upper insulating partition. The busbar washers abut against the upper insulating sleeve. One of the nuts and the busbar nuts abuts against the busbar washers, and the other abuts against the pad.

[0016] Optionally, the connecting hole passes through the upper insulating partition, the middle insulating partition, and the lower insulating partition. In two adjacent connecting holes, one connecting hole passes through the upper insulating abutment, the first middle insulating abutment, the second middle insulating abutment, and the lower insulating abutment on one side along the second direction, and the other connecting hole passes through the upper insulating abutment, the first middle insulating abutment, the second middle insulating abutment, and the lower insulating abutment on the other side along the second direction.

[0017] Optionally, it may also include a plurality of insulating sleeves, the insulating sleeves being fitted over the outside of the busbar bolts, the busbar bolts being disposed through the connecting holes, and the insulating sleeves being disposed through the connecting holes of each of the phases.

[0018] The device includes a circuit breaker assembly, which includes a circuit breaker body and a plurality of clamps corresponding one-to-one with the phase busbars. The plurality of clamps are disposed on the circuit breaker body and are connected to the phase busbars respectively.

[0019] Compared with the prior art, the power distribution device implemented in this utility model has the following advantages:

[0020] In this utility model of power distribution device, the busbar assembly extends along a first direction, and multiple phase groups spaced apart along the vertical direction also extend along the first direction, allowing the circuit breaker assembly to be inserted into or removed from the busbar assembly along a second direction. Furthermore, the busbar assembly has through-holes in the vertical direction that penetrate each phase group, through which busbar bolts pass to securely connect the phase groups. The busbar assembly has multiple through-holes and multiple pre-supported busbar bolts, with these through-holes spaced apart along the first direction, and adjacent through-holes having a distance greater than zero in the second direction. This design changes the traditional method of arranging bolts only along the extension direction of the busbar assembly, making the horizontal support points of the busbar assembly more evenly distributed, effectively dispersing the horizontal force generated during the lateral insertion and removal of the circuit breaker assembly. When the circuit breaker assembly applies a force along the second direction to the phase group assembly, the multiple spaced through-holes form multi-point support through the busbar bolts, avoiding stress concentration at a single location, thereby significantly reducing the risk of deformation and damage to the busbar assembly. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the power distribution device of this utility model.

[0022] Figure 2 This is a structural schematic diagram of the power distribution device of this utility model from another perspective.

[0023] Figure 3 This is the front view of the power distribution device of this utility model.

[0024] Figure 4 Left view of the power distribution device of this utility model

[0025] Figure 5 for Figure 4 A magnified view of part A in the middle.

[0026] Figure 6 This is a top view of the power distribution device of this utility model (rotated 90° counterclockwise).

[0027] Figure 7 for Figure 6 A cross-sectional view of BB.

[0028] Figure 8 for Figure 7 A magnified view of part C in the middle.

[0029] Figure 9 This is a schematic diagram of the circuit breaker assembly in one embodiment of the present invention.

[0030] Reference numerals: 1. Busbar assembly; 11. Phase busbar; 12. Upper insulating block; 121. Upper insulating partition; 122. Upper insulating abutment; 13. Middle insulating block; 131. Middle insulating partition; 132. First middle insulating abutment; 133. Second middle insulating abutment; 14. Lower insulating block; 141. Lower insulating partition; 142. Lower insulating abutment; 2. Busbar bolt; 21. Screw; 22. Nut; 3. Busbar nut; 4. Busbar washer; 5. Upper insulating sleeve; 6. Middle insulating sleeve; 7. Lower insulating sleeve; 8. Insulating sleeve; 9. Circuit breaker assembly; 91. Circuit breaker body; 92. Clamp; 10. Base; 101. Pad; 102. Support. Detailed Implementation

[0031] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0032] In the description of this utility model, it should be understood that the terms "top", "bottom", "inner", "outer", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0033] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0034] like Figures 1 to 9 As shown, a power distribution device of this utility model includes a busbar assembly 1 and a plurality of busbar bolts 2. The busbar assembly 1 extends along a first direction and includes a plurality of phase rows 11 spaced apart along a vertical direction, and is provided with a plurality of connecting holes that pass through each phase row 11 along a vertical direction. The plurality of connecting holes are arranged sequentially at intervals along the first direction, and there is a first distance L1 between two adjacent connecting holes along a second direction. The busbar bolts 2 pass through the connecting holes to fix and connect each phase row 11, wherein the first distance L1 is greater than 0.

[0035] In the above technical solution, the busbar assembly 1 extends along the first direction, and its multiple phase rows 11, spaced apart in the vertical direction, also extend along the first direction, so that the circuit breaker assembly 9 can be inserted into or removed from the busbar assembly 1 in the second direction. Furthermore, the busbar assembly 1 has connecting holes that extend through in the vertical direction, which pass through each phase row 11. The busbar bolts 2 pass through the connecting holes to fix each phase row 11. Furthermore, the busbar assembly 1 has multiple connecting holes, and there are also multiple pre-supported busbar bolts 2. These connecting holes are arranged sequentially at intervals along the first direction, and two adjacent connecting holes have a distance greater than 0 in the second direction. This design changes the traditional method of arranging bolts only along the extension direction of the busbar assembly 1, making the support points of the busbar assembly 1 more evenly distributed in the horizontal direction, and effectively dispersing the horizontal force generated when the circuit breaker assembly 9 is inserted and removed laterally. When the circuit breaker assembly 9 applies a force along the second direction to the phase busbar 11 assembly, the multiple spaced connection holes form multi-point support through the busbar bolts 2, avoiding stress concentration at a single location, thereby significantly reducing the risk of deformation and damage to the busbar assembly 1.

[0036] Among them, the vertical direction, the first direction and the second direction are each at an angle, and the angle is preferably a right angle.

[0037] Furthermore, the busbar assembly 1 is provided with at least three connection holes, and the connection hole between the first connection hole and the last connection hole is designated as the intermediate connection hole, which is located on the same side of the two adjacent connection holes along the second direction.

[0038] This design features a staggered arrangement of connection holes, which disperses lateral forces in segments and reduces stress concentration on the busbar in the horizontal direction. When the lateral force of the circuit breaker assembly 9 acts on the busbar, the staggered connection holes can transfer the force to support points at different locations, avoiding single-point overload and thus improving the busbar's resistance to deformation. In addition, it can optimize the bending moment distribution of the busbar and reduce the overall structural deformation tendency.

[0039] Furthermore, there is a second spacing L2 between two adjacent connecting holes along a second direction, wherein the second spacing L2 is 0.

[0040] Here, the two next-adjacent connecting holes refer to the adjacent positions of one connecting hole to another, with a gap of one connecting hole between them. Furthermore, the spacing between the next-adjacent connecting holes in the second direction is 0, ensuring that the next-adjacent connecting holes are aligned horizontally to form a continuous support line. These two continuous support lines enhance the stiffness of the busbar assembly 1 in the second direction. When a horizontal force is applied to the busbar assembly 1, these two continuous support lines can evenly transmit the force along the length of the busbar, preventing localized deformation caused by discontinuities in the support points.

[0041] Specifically, this is equivalent to dividing multiple connecting holes into a first hole group and a second hole group. The connecting holes in the first hole group are arranged in a straight line along a first direction, sequentially and at intervals. The connecting holes in the second hole group are also arranged in a straight line along the first direction, sequentially and at intervals. The first hole group is located on one side along the second direction, and the second hole group is located on the other side along the second direction. There is a connecting hole in the second hole group between two adjacent connecting holes in the first hole group along the first direction, and there is a connecting hole in the first hole group between two adjacent connecting holes in the second hole group along the first direction.

[0042] Furthermore, the busbar assembly 1 also includes an upper insulating block 12, a middle insulating block 13, and a lower insulating block 14. The connecting hole passes through the upper insulating block 12, the middle insulating block 13, and the lower insulating block 14. The upper insulating block 12 is disposed on the top surface of the uppermost phase busbar 11, the middle insulating block 13 is disposed between two adjacent phase busbars 11, and the lower insulating block 14 is disposed on the bottom surface of the lowermost phase busbar 11.

[0043] The upper, middle and lower insulating blocks 14 can electrically insulate the phase row 11, and also support the insulating blocks, restrict the relative displacement between the phase rows 11, and reduce the offset caused by vibration or lateral force.

[0044] Furthermore, the upper insulating block 12 includes an upper insulating partition 121 and two upper insulating abutments 122. The two upper insulating abutments 122 are spaced apart along a second direction on the bottom surface of the upper insulating partition 121, and the bottom surface of the upper insulating abutments 122 abuts against the top surface of the phase array 11. The middle insulating block 13 includes a middle insulating partition 131, two first middle insulating abutments 132, and two second middle insulating abutments 133. The two first middle insulating abutments 132 are spaced apart along a second direction on the top surface of the middle insulating partition 131, and the bottom surface of the first middle insulating abutments 122 abuts against the top surface of the phase array 11. The top surface of plate 132 abuts against the bottom surface of the upper phase row 11. Two second intermediate insulating plates 133 are spaced apart along a second direction on the bottom surface of the intermediate insulating partition 131, and the bottom surface of the second intermediate insulating plates 133 abuts against the top surface of the lower phase row 11. The lower insulating block 14 includes a lower insulating partition 141 and two lower insulating plates 142. The two lower insulating plates 142 are spaced apart along a second direction on the top surface of the lower insulating partition 141, and the bottom surface of the lower insulating plates 142 abuts against the bottom surface of the phase row 11.

[0045] Among them, the insulating partition is used for electrical isolation, the insulating abutment is used for limiting and supporting, and the space formed by the spacing between the two insulating abutments can also be used for heat dissipation of the phase bus 11; in addition, at least one side of the phase bus 11 along the second direction protrudes from each insulating abutment so that the circuit breaker assembly 9 can be connected. Preferably, the two sides of the phase bus 11 along the second direction protrude from two insulating abutments respectively so that the circuit breaker assembly 9 can be connected to the two sides of the bus bus assembly 1 along the second direction.

[0046] Furthermore, it also includes multiple upper insulating sleeves 5, multiple middle insulating sleeves 6, multiple lower insulating sleeves 7, and multiple female bolts 3. The female bolt 2 includes a screw 21 and a nut 22. The upper insulating sleeves 5, the middle insulating sleeves 6, and the lower insulating sleeves 7 are sleeved on the outside of the screw 21. The upper insulating sleeves 5 pass through the connecting hole of the upper insulating partition 121, and their bottom surface abuts against the top surface of the uppermost phase row 11. The middle insulating sleeves 6 pass through the connecting hole of the middle insulating partition 131, and their top and bottom surfaces abut against the phase row 11 located above the middle insulating partition 131, respectively. The bottom surface and the top surface of the phase row 11 located below the middle insulating partition 131 are connected. The lower insulating sleeve 7 passes through the connecting hole of the lower insulating partition 141, and its top surface abuts against the bottom surface of the lowest phase row 11. The nut 22 is provided at one end of the screw 21, and the female nut 3 is sleeved on the outside of the screw 21. The screw 21 passes through the connecting hole. The nut 22 and the female nut 3 are respectively located on both sides of the busbar assembly 1 in the vertical direction. One of the nut 22 and the female nut 3 applies pressure to the upper insulating sleeve 5, and the other applies pressure to the lower insulating sleeve 7.

[0047] Among them, the female nut 3 and the nut 22 apply pressure to the insulating sleeve on both sides in the vertical direction, so as to apply pressure directly to the phase row 11 through the insulating sleeve, thereby fixing the phase row 11. Since the contact area between the insulating sleeve and the phase row 11 is large, the pressure generated by fixing the phase row 11 can be effectively reduced, and the risk of deformation and damage to the phase row 11 can be reduced.

[0048] The nut 22 and the female nut 3 can apply pressure to the upper insulating sleeve 5 and the lower insulating sleeve 7 by directly abutting against them, or they can apply pressure indirectly by adding washers. The fundamental purpose is to fix each phase 11 between the insulating blocks. The insulating blocks mainly support the phase 11 and will not put much pressure on the phase 11.

[0049] Furthermore, it also includes a base 10 and a plurality of busbar washers 4. The base 10 extends along a first direction and includes a pad 101 and a support 102. The support 102 is located on the bottom surface of the pad 101. The pad 101 is located on the bottom surface of the lower insulating partition 141. The pad 101 has a plurality of through holes in the vertical direction, and each hole corresponds to a connecting hole. The lower insulating sleeve 7 passes through the through holes, and the pad 101 abuts against the lower insulating sleeve 7. The busbar washers 4 are sleeved on the outside of the screw 21. The busbar washers 4 are located on the top surface of the upper insulating partition 121 and abut against the upper insulating sleeve 5. One of the nuts 22 and the busbar nuts 3 abuts against the busbar washers 4, and the other abuts against the pad 101.

[0050] The base 10 and busbar washer 4 can further optimize the transmission path of the fastening force of the busbar bolt 2. Specifically, the pad 101 abuts against each of the lower pressure sleeves, and the busbar washer 4 abuts against the upper pressure sleeves in a corresponding manner to increase the contact area between the upper and lower pressure sleeves. In addition, the busbar washer 4 and the pad 101 can also abut against the upper insulating partition 121 and the lower insulating partition 141 respectively to ensure that the position of each pressure sleeve is consistent in the vertical direction, so as to prevent the pressure sleeve from shifting in the vertical direction, thereby causing structural instability or leakage.

[0051] In addition, the support portion 102 of the base 10 can provide additional mechanical support and also raise the busbar assembly 1 to prevent the busbar bolt 2 from contacting the ground. Specifically, the base 10 may include two support portions 102, which are respectively disposed opposite to each other and spaced apart on the bottom surface of the pad 101 along the second direction. The support portion 102 is an L-shaped plate, and the bottom surface of the support portion 102 is lower than the bottom surface of the busbar screw 21.

[0052] Furthermore, the connecting hole passes through the upper insulating partition 121, the middle insulating partition 131, and the lower insulating partition 141. In two adjacent connecting holes, one connecting hole passes through the upper insulating abutment 122, the first middle insulating abutment 132, the second middle insulating abutment 133, and the lower insulating abutment 142 along one side of the second direction, and the other connecting hole passes through the upper insulating abutment 122, the first middle insulating abutment 132, the second middle insulating abutment 133, and the lower insulating abutment 142 along the other side of the second direction.

[0053] The connecting hole must pass through the insulating partition. When the connecting hole is offset to one side along the second direction, it can pass through the insulating abutment on that side accordingly, so that the staff can observe it and disassemble it. Although this will weaken the strength of the insulating abutment, the design is mainly to fix the phase row 11 by the pressure sleeve. The insulating abutment is subjected to less force, and this weakening does not affect the structural stability.

[0054] Furthermore, it also includes multiple insulating sleeves 8, which are sleeved on the outside of the busbar bolts 2, the busbar bolts 2 passing through the connecting holes, and the insulating sleeves 8 passing through the connecting holes of each of the phase rows 11.

[0055] The insulating sleeve 8 is used to electrically isolate the screw 21 and the phase row 11.

[0056] Furthermore, it also includes a circuit breaker assembly 9, which includes a circuit breaker body 91 and a plurality of clamps 92 corresponding one-to-one with the phase bus 11. The plurality of clamps 92 are disposed on the circuit breaker body 91 and are correspondingly connected to the phase bus 11.

[0057] The circuit breaker body 91 is connected to the phase bus 11 via a clamp 92. Specifically, one end of the clamp 92 is connected to the circuit breaker body 91, and the other end is provided with a claw-shaped component for connecting to the phase bus 11.

[0058] Furthermore, fixed setting and fixed connection refer to the fixed relative positional relationship of two components, including but not limited to fixing by connectors, fixing by welding, fixing by adhesive, fixing by integral molding, and fixing by snap-fit ​​connection.

[0059] Furthermore, the connectors include, but are not limited to, fasteners, straps, ropes, pneumatic connectors, hydraulic connectors, flanges, Velcro, and buttons.

[0060] Furthermore, in this embodiment, all components whose names contain the word "insulating" should be made of insulating material to achieve the effect of electrical isolation. The insulating material can be epoxy resin, sheet molding compound, phenolic resin, polyamide, and rubber. The components whose names contain the word "insulating" include upper insulating block 12, middle insulating block 13, lower insulating block 14, upper insulating sleeve 5, middle insulating sleeve 6, lower insulating sleeve 7, and insulating sleeve 8.

[0061] In summary, the present invention provides a power distribution device, the technical effects of which are as follows:

[0062] In this utility model of power distribution device, the busbar assembly 1 extends along a first direction, and its multiple phase rows 11, spaced apart in the vertical direction, also extend along the first direction, so that the circuit breaker assembly 9 can be inserted into or removed from the busbar assembly 1 in a second direction. Furthermore, the busbar assembly 1 has connecting holes that extend through each phase row 11 in the vertical direction, and the busbar bolts 2 pass through the connecting holes to fix each phase row 11. Furthermore, the busbar assembly 1 has multiple connecting holes, and there are also multiple pre-supported busbar bolts 2. These connecting holes are arranged sequentially at intervals along the first direction, and two adjacent connecting holes have a distance greater than 0 in the second direction. This design changes the traditional method of arranging bolts only along the extension direction of the busbar assembly 1, making the support points of the busbar assembly 1 more evenly distributed in the horizontal direction, and effectively dispersing the horizontal force generated when the circuit breaker assembly 9 is inserted and removed laterally. When the circuit breaker assembly 9 applies a force along the second direction to the phase busbar 11 assembly, the multiple spaced connection holes form multi-point support through the busbar bolts 2, avoiding stress concentration at a single location, thereby significantly reducing the risk of deformation and damage to the busbar assembly 1.

[0063] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present utility model, and these improvements and substitutions should also be considered within the protection scope of the present utility model.

Claims

1. A power distribution device, characterized by, The device includes a busbar assembly (1) and a plurality of busbar bolts (2). The busbar assembly (1) extends along a first direction. The busbar assembly (1) includes a plurality of phase rows (11) spaced apart along the vertical direction and has a plurality of connecting holes that pass through each phase row (11) along the vertical direction. The plurality of connecting holes are spaced apart sequentially along the first direction. There is a first distance L1 between two adjacent connecting holes along a second direction. The busbar bolts (2) pass through the connecting holes to fix and connect each phase row (11). The first distance L1 is greater than 0.

2. The power distribution device of claim 1, wherein, The busbar assembly (1) is provided with at least three connection holes, and the connection hole between the first connection hole and the last connection hole is designated as the intermediate connection hole. The intermediate connection hole is located on the same side of the two adjacent connection holes along the second direction.

3. The power distribution device of claim 2, wherein, There is a second spacing L2 between two adjacent connecting holes along a second direction, wherein the second spacing L2 is 0.

4. The power distribution device of claim 1, wherein, The busbar assembly (1) further includes an upper insulating block (12), a middle insulating block (13), and a lower insulating block (14). The connecting hole passes through the upper insulating block (12), the middle insulating block (13), and the lower insulating block (14). The upper insulating block (12) is located on the top surface of the uppermost phase busbar (11), the middle insulating block (13) is located between two adjacent phase busbars (11), and the lower insulating block (14) is located on the bottom surface of the lowermost phase busbar (11).

5. The power distribution device of claim 4, wherein, The upper insulating block (12) includes an upper insulating partition (121) and two upper insulating abutments (122). The two upper insulating abutments (122) are spaced apart on the bottom surface of the upper insulating partition (121) along the second direction, and the bottom surface of the upper insulating abutments (122) abuts against the top surface of the phase row (11). The middle insulating block (13) includes a middle insulating partition (131), two first middle insulating abutments (132) and two second middle insulating abutments (133). The two first middle insulating abutments (132) are spaced apart along a second direction on the top surface of the middle insulating partition (131). The top surface of the first middle insulating abutments (132) abuts against the bottom surface of the upper phase row (11). The two second middle insulating abutments (133) are spaced apart along a second direction on the bottom surface of the middle insulating partition (131). The bottom surface of the second middle insulating abutments (133) abuts against the top surface of the lower phase row (11). The lower insulating block (14) includes a lower insulating partition (141) and two lower insulating abutments (142). The two lower insulating abutments (142) are spaced apart on the top surface of the lower insulating partition (141) along the second direction, and the bottom surface of the lower insulating abutments (142) abuts against the bottom surface of the phase row (11).

6. The power distribution device of claim 5, wherein, It also includes multiple upper insulating sleeves (5), multiple middle insulating sleeves (6), multiple lower insulating sleeves (7), and multiple female bolts (3), wherein the female bolts (2) include a screw (21) and a nut (22); The upper insulating sleeve (5), the middle insulating sleeve (6), and the lower insulating sleeve (7) are sleeved on the outside of the screw (21). The upper insulating sleeve (5) passes through the connecting hole of the upper insulating partition (121), and its bottom surface abuts against the top surface of the uppermost phase row (11). The middle insulating sleeve (6) passes through the connecting hole of the middle insulating partition (131), and its top and bottom surfaces abut against the bottom surface of the phase row (11) above the middle insulating partition (131) and the top surface of the phase row (11) below the middle insulating partition (131), respectively. The lower insulating sleeve (7) passes through the connecting hole of the lower insulating partition (141), and its top surface abuts against the bottom surface of the lowermost phase row (11). The nut (22) is located at one end of the screw (21), and the female nut (3) is sleeved on the outside of the screw (21). The screw (21) passes through the connecting hole. The nut (22) and the female nut (3) are located on both sides of the busbar assembly (1) in the vertical direction. One of the nut (22) and the female nut (3) applies pressure to the upper insulating sleeve (5), and the other applies pressure to the lower insulating sleeve (7).

7. The power distribution device of claim 6, wherein, It also includes a base (10) and multiple busbar washers (4). The base (10) extends along a first direction and includes a pad (101) and a support (102). The support (102) is located on the bottom surface of the pad (101), and the pad (101) is located on the bottom surface of the lower insulating partition (141). The pad (101) has multiple through holes in the vertical direction, and each hole corresponds to a connecting hole. The pressure sleeve (7) passes through the plate hole, the pad (101) abuts against the lower insulating pressure sleeve (7), the busbar washer (4) is sleeved on the outside of the screw (21), the busbar washer (4) is located on the top surface of the upper insulating partition (121), the busbar washer (4) abuts against the upper insulating pressure sleeve (5), one of the nut (22) and the busbar nut (3) abuts against the busbar washer (4), and the other abuts against the pad (101).

8. The power distribution device of claim 5 or 6, wherein, The connecting hole passes through the upper insulating partition (121), the middle insulating partition (131), and the lower insulating partition (141). In two adjacent connecting holes, one of the connecting holes passes through the upper insulating abutment (122), the first middle insulating abutment (132), the second middle insulating abutment (133), and the lower insulating abutment (142) along one side of the second direction, and the other connecting hole passes through the upper insulating abutment (122), the first middle insulating abutment (132), the second middle insulating abutment (133), and the lower insulating abutment (142) along the other side of the second direction.

9. The power distribution device of claim 1, wherein, It also includes multiple insulating sleeves (8), which are sleeved on the outside of the busbar bolts (2), which pass through the connecting holes, and the insulating sleeves (8) pass through the connecting holes of each of the phase rows (11).

10. The power distribution device of claim 1, wherein, It also includes a circuit breaker assembly (9), which includes a circuit breaker body (91) and a plurality of clamps (92) corresponding one-to-one with the phase bus (11). The plurality of clamps (92) are disposed on the circuit breaker body (91) and are connected to the phase bus (11).

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