Shockproof low-voltage bus duct for rail transit direct-current traction

Abstract

The utility model belongs to the technical field of electricity, and particularly relates to a shockproof low-voltage bus duct for rail transit direct-current traction, which comprises a base, a shell and a top cover, the top cover is arranged on the upper surface of the shell, and a shockproof structure is arranged on the upper surface of the base; the shockproof structure comprises a buffer unit and a clamping unit; the buffer unit comprises a first supporting column, a second supporting column, a first spring, a placing hole, a second spring, a connecting strip, a placing groove and a clamping block, the bottom of the first supporting column is fixedly connected to the upper surface of the base, and the second supporting column is movably connected to the interior of the first supporting column. According to the shockproof low-voltage bus duct for rail transit direct current traction, the buffer unit is arranged, the first spring can effectively absorb and disperse impact force when the bus duct is subjected to external force or vibration, the buffer effect on the bus duct is achieved, the vibration isolation layer is arranged in the groove between the shell and the top cover, the vibration isolation layer is made of a silica gel material, and therefore the vibration isolation effect is good. And good elasticity and vibration isolation performance are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of electricity, in particular to a shockproof low-voltage bus duct for direct current traction in rail transit. Background Art

[0002] The bus duct system is a power distribution device that efficiently transmits current. It is particularly suitable for the economical and reasonable wiring needs of more and more high-rise buildings and large-scale factories. Therefore, it is widely used in the connection between low-voltage distribution panels and large and medium-sized loads, such as modern workshops, factories and high-rise buildings.

[0003] The Chinese patent with publication number CN206585299U discloses a low-voltage bus duct, including a side connecting plate; a top connecting plate, which is located inside the side connecting plate, the top connecting plate having a top horizontal portion and a top vertical portion formed from the side edge of the top horizontal portion to the bottom, the top vertical portion is in surface contact with the side connecting plate, and the top vertical portion is welded to the side connecting plate; and a bottom connecting plate, which is located inside the top connecting plate, the bottom connecting plate having a bottom horizontal portion and a top vertical portion formed from the side edge of the top horizontal portion to the bottom. A bottom vertical portion is formed from the side edge to the bottom, and the bottom vertical portion extends to the bottom of the top vertical portion, and the bottom vertical portion is in surface contact with the top vertical portion, and the bottom vertical portion is welded to the top vertical portion; furthermore, the top horizontal portion, the top vertical portion and the bottom horizontal portion define a busbar group accommodating space, and the accommodating space contains a left busbar group and a right busbar group, and a horizontal distance is left between the left busbar group and the right busbar group to form a cooling channel, and a cooling fan is provided in the cooling channel.

[0004] The above-mentioned prior art solutions have the following defects: for the left busbar group and the right busbar group in the bus duct, although there is a horizontal distance between them to form a cooling channel, this design does not specifically consider the need for shockproofing. When subjected to vibration, the busbar group may shift or vibrate, which may not only affect the stability of the electrical connection, but also interfere with the normal operation of the cooling fan.

[0005] To this end, we proposed a shock-proof low-voltage bus duct for rail transit DC traction to solve the above problems. Utility Model Content

[0006] The utility model aims to provide a shockproof low-voltage bus duct for rail transit DC traction, so as to solve the problem that the busbar group may shift or vibrate when subjected to vibration as mentioned in the above background technology.

[0007] To achieve the above object, the utility model provides the following technical solution: a shockproof low-voltage bus duct for rail transit DC traction, comprising a base, a shell and a top cover, wherein the top cover is arranged on the upper surface of the shell, and a shockproof structure is arranged on the upper surface of the base;

[0008] The shockproof structure includes a buffer unit and a clamping unit;

[0009] The buffer unit includes a first support column, a second support column, a first spring, a placement hole, a second spring, a second connecting strip, a placement slot and a clamping block, wherein the bottom of the first supporting column is fixedly connected to the upper surface of the base, the second supporting column is movably connected to the inside of the first supporting column, the bottom of the first spring is fixedly connected to the inner bottom surface of the first supporting column, the top of the first spring is fixedly connected to the lower surface of the second supporting column, the placement hole is arranged in the middle of the upper surface of the second supporting column, the placement slots are respectively arranged on both sides of the lower inside of the second column, one end of the second connecting strip is movably connected to a side of the inside of the placement slot away from the second supporting column, one end of the spring is fixedly connected to a side of the inside of the placement slot away from the second supporting column, and one side of the clamping block is fixedly connected to the other end of the second connecting strip;

[0010] The clamping unit includes a fixed block 1, a fixed plate, a movable block, a fixed block 2 and a fixed column. The upper surface of the fixed block 1 is fixedly connected to the bottom of the shell, the upper surface of the fixed plate is fixedly connected to the lower surface of the fixed block, the top of the fixed column is fixedly connected to the middle of the lower surface of the fixed plate, the middle of the movable block is movably connected to the outer side of the fixed column, and the fixed block 2 is fixedly connected to the bottom end of the fixed column.

[0011] Preferably, the shell and the top cover are provided with grooves on the sides close to each other, vibration isolation layers are provided on both sides of the grooves, and a busbar partition is movably connected between the two vibration isolation layers. The arrangement of the grooves and the vibration isolation layers can further reduce the vibration and noise generated by the bus duct during operation, thereby improving the stability of the entire system. The movable connection design of the busbar partition also makes the busbar layout inside the bus duct more flexible and convenient for maintenance.

[0012] Preferably, the vibration isolation layer is made of silicone material, which has good elasticity and vibration isolation performance, can effectively absorb and reduce vibration transmission, and improve the vibration isolation effect of the bus duct.

[0013] Preferably, heat dissipation holes are respectively provided on both sides of the shell, and there are multiple heat dissipation holes, which are equidistantly provided on both sides of the shell. The provision of heat dissipation holes can effectively improve the heat dissipation performance of the bus duct, ensure that the temperature of the bus duct will not be too high during operation, and ensure the stable operation of the bus duct. The design of multiple equidistant heat dissipation holes also ensures uniform heat dissipation.

[0014] Preferably, a heat dissipation device is provided inside the shell, and the heat dissipation device includes a slide rail, a slider, a connecting bar, a fan and an electric push rod. The slide rail is fixedly connected to both sides of the top of the shell, the slider is slidably connected to the inside of the slide rail, one end of the connecting bar is fixedly connected to the slider, and the other end of the connecting bar is fixedly connected to the fan, and the output end of the electric push rod is fixedly connected to the middle of the back side of the slider. The electric push rod can drive the slider to slide on the slide rail, thereby driving the fan to move, thereby realizing the heat dissipation requirements of different positions inside the bus duct and improving the heat dissipation efficiency.

[0015] Preferably, there are four groups of buffer units and card-connecting units, which are respectively arranged around the upper surface of the base and the lower surface of the shell. The arrangement of four groups of buffer units and card-connecting units can enhance the overall stability and shockproof performance of the bus duct, so that it can better maintain stability when subjected to external force or vibration, reducing the risk of damage.

[0016] Preferably, the movable block is in the shape of a right trapezoid, and the fixed block 2 is in the shape of an inverted trapezoid, so that the movable block and the fixed block 2 can form a stable clamping structure when they contact each other. The shape design of the right trapezoid and the inverted trapezoid also makes the clamping process smoother and convenient for installation and disassembly.

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

[0018] 1. The shockproof low-voltage bus duct for DC traction in rail transit is designed with a quick clamping structure to achieve a stable connection between the shell and the base. The movable block is in a regular trapezoidal shape, and the fixed block is in an inverted trapezoidal shape. This shape design enables the two to form a stable clamping structure when they contact each other, which not only ensures the stability of the connection, but also makes the clamping process smoother and improves the efficiency of installation and disassembly.

[0019] 2. The shockproof low-voltage bus duct for DC traction in rail transit also has a heat dissipation device inside the bus duct. Driven by the electric push rod, the slider can slide on the slide rail, driving the fan to move to different positions inside the bus duct to achieve targeted heat dissipation. This design can more flexibly respond to the heat dissipation needs of different areas inside the bus duct and further improve the heat dissipation effect.

[0020] 3. The shockproof low-voltage bus duct for DC traction in rail transit is provided with a buffer unit. The first spring can effectively absorb and disperse the impact force when the bus duct is subjected to external force or vibration, thereby playing a buffering effect on the bus duct. In addition, a vibration isolation layer is provided in the groove between the shell and the top cover. The vibration isolation layer is made of silicone material and has good elasticity and vibration isolation performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall front structure of the utility model;

[0022] Figure 2 It is a schematic diagram of the overall side structure of the utility model;

[0023] Figure 3 It is a schematic diagram of the overall bottom expansion of the utility model;

[0024] Figure 4 This is a schematic diagram of the internal structure of the buffer base of the utility model;

[0025] Figure 5 It is a partial structural schematic diagram of the utility model.

[0026] In the figure: 1 base, 2 shell, 201 slide rail, 202 slider, 203 connecting strip 1, 204 fan, 205 electric push rod, 3 top cover, 301 groove, 302 vibration isolation layer, 4 heat dissipation hole, 5 busbar partition, 601 first support column, 602 second support column, 603 first spring, 604 placement hole, 605 second spring, 606 connecting strip 2, 607 placement groove, 608 clamping block, 701 fixed block 1, 702 fixed plate, 703 movable block, 704 fixed block 2, 705 fixed column. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] See also Figure 1-Figure 4 The utility model provides a technical solution: a low-voltage bus duct for rail transit DC traction, comprising a base 1, a shell 2 and a top cover 3. The shell 2 is the main part of the bus duct, which is used to protect the bus from the influence of the external environment. The top cover 3 is arranged on the upper surface of the shell 2. The top cover 3 cooperates with the shell 2 to form a closed bus duct structure to prevent dust, moisture, etc. from entering the bus duct. The shell 2 and the top cover 3 are respectively provided with grooves 301 on one side close to each other, and vibration isolation layers 302 are arranged on both sides of the groove 301. The groove 301 and the vibration isolation layer 302 inside the shell 2 are designed to further enhance the shockproof performance of the bus duct. A bus partition 5 is movably connected between the two vibration isolation layers 302. The bus partition 5 is used to separate the busbars in the bus duct, prevent electromagnetic interference between the busbars, and improve the electrical performance of the bus duct. The vibration isolation layer 302 is made of silicone material. The vibration isolation layer 302 made of silicone material has good elasticity and vibration isolation performance, which can further improve the shockproof effect of the bus duct.

[0029] The base 1 is the supporting structure of the entire bus duct, ensuring that the bus duct can be stably placed in the working environment. The upper surface of the base 1 is provided with a shockproof structure;

[0030] The shockproof structure includes a buffer unit and a clamping unit;

[0031] The buffer unit includes a first support column 601, a second support column 602, a first spring 603, a placement hole 604, a second spring 605, a second connecting strip 606, a placement slot 607 and a clamping block 608. The bottom of the first support column 601 is fixedly connected to the upper surface of the base 1. The first support column 601 firmly supports the second support column 602 to ensure the structural stability of the buffer unit. As a supporting point of the first spring 603, the first spring 603 can play its elastic role. When the bus duct is subjected to external force or vibration, the first spring 603 can absorb and disperse the impact force and reduce the impact of vibration on the bus duct. The elasticity of the first spring 603 enables the bus duct to quickly return to its original position after being vibrated. The second support column 602 is movably connected to the inside of the first support column 601, and works in conjunction with the first support column 601 to achieve a buffering effect. The bottom of the first spring 603 is fixedly connected to the bottom surface of the first support column 601, the top of the first spring 603 is fixedly connected to the lower surface of the second support column 602, the placement hole 604 is opened in the middle of the upper surface of the second support column 602, the placement grooves 607 are respectively opened on both sides of the lower part of the second support column, one end of the second connecting strip 606 is movably connected to the side of the placement groove 607 away from the second support column 602, one end of the spring is fixedly connected to the side of the placement groove 607 away from the second support column 602, and one side of the clamping block 608 is fixedly connected to the other end of the second connecting strip 606;

[0032] The clamping unit includes a fixed block 1 701, a fixed plate 702, a movable block 703, a fixed block 2 704 and a fixed column 705. The upper surface of the fixed block 1 701 is fixedly connected to the bottom of the housing 2, the upper surface of the fixed plate 702 is fixedly connected to the lower surface of the fixed block 1 701, the top of the fixed column 705 is fixedly connected to the middle of the lower surface of the fixed plate 702, the middle of the movable block 703 is movably connected to the outer side of the fixed column 705, and the fixed block 2 704 is fixedly connected to the bottom of the fixed column 705. The design of the fixed column 705 also enables the clamping unit to have a certain guiding effect, so that the fixed block 2 704 can be smoothly clamped with the clamping block 608. The movable block 703 is in a regular trapezoidal shape, and the fixed block 2 704 is in an inverted trapezoidal shape. The inverted trapezoidal design enables the fixed block 2 704 to better fix the clamping block 608 to prevent it from falling off. There are four groups of buffer units and clamping units, which are respectively arranged around the upper surface of the base 1 and around the lower surface of the shell 2. The buffer units effectively absorb and disperse external vibrations to protect the bus duct from damage.

[0033] The housing 2 is provided with a heat dissipation device, which includes a slide rail 201, a slider 202, a connecting bar 203, a fan 204 and an electric push rod 205. The slide rail 201 is fixedly connected to both sides of the upper part of the housing 2, the slider 202 is slidably connected to the inside of the slide rail 201, the end of the connecting bar 203 is fixedly connected to the slider 202, the other end of the connecting bar 203 is fixedly connected to the fan 204, and the output end of the electric push rod 205 is fixedly connected to the middle of the back of the slider 202. The heat dissipation device realizes the heat dissipation requirements of different positions inside the bus duct through the design of the fan 204 and the slide rail 201, and improves the heat dissipation efficiency of the bus duct. The electric push rod 205 drives the slider 202 to slide on the slide rail 201, so that the fan 204 can be moved to a specified position as needed to achieve fixed-point heat dissipation.

[0034] Working principle: Fix the base 1 firmly in the predetermined position to ensure that the bus duct can be placed both stably and firmly. Then, gently place the shell 2 on the base 1, and make sure that the fixing block 1 701 is accurately aligned with the buffer unit on the base 1. Next, accurately place the fixing block 2 704 into the placement hole 604, and then slowly press the shell 2. In this process, the snap-in block 608 will be squeezed by the fixing block 2 704, thereby driving the connecting strip 2 606 to move to both sides, and the second spring 605 will also be squeezed accordingly. When the fixing block 1 701 continues to move downward, the pressure gradually disappears, and the snap-in block 608 can be smoothly snapped into the fixed position, thereby achieving a quick and firm snap-in connection between the shell 2 and the base 1. When disassembly is required, just continue to press the shell 2 downward to move the snap-in block 608 further, and pass through the movable block 703 to make the snap-in block 608 fall off from the fixed position smoothly, so as to facilitate disassembly. Install the top cover 3, ensuring that the groove 301 and Vibration isolation layer 302 Correctly align and install the busbar partition 5. The vibration isolation layer 302 on both sides of the busbar partition 5 is made of silicone material. The silicone material has good elasticity and vibration isolation performance, can effectively absorb and reduce vibration transmission, and improve the vibration isolation effect of the busbar duct. When the temperature inside the busbar duct rises and heat dissipation is required, the electric push rod 205 starts to work and pushes the slider 202 to slide on the slide rail 201. The movement of the slider 202 will drive the connecting bar 203 and the fan 204 to move together, so that the fan 204 reaches the position where heat dissipation is required. After the fan 204 is started, the heat inside the busbar duct is taken away by blowing air, and the heat dissipation effect is achieved through the heat dissipation holes 4.

[0035] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

Claims

1. A shockproof low-voltage bus duct for DC traction in rail transit, comprising a base (1), a shell (2) and a top cover (3), characterized in that: The top cover (3) is arranged on the upper surface of the shell (2), and the upper surface of the base (1) is provided with a shockproof structure; The shockproof structure includes a buffer unit and a clamping unit; The buffer unit comprises a first support column (601), a second support column (602), a first spring (603), a placement hole (604), a second spring (605), a second connecting strip (606), a placement groove (607) and a clamping block (608), wherein the bottom of the first support column (601) is fixedly connected to the upper surface of the base (1), the second support column (602) is movably connected to the inside of the first support column (601), the bottom of the first spring (603) is fixedly connected to the inner bottom surface of the first support column (601), and the first spring (603) is fixedly connected to the inner bottom surface of the first support column (601). ) is fixedly connected to the lower surface of the second support column (602) at the top, the placement hole (604) is opened in the middle of the upper surface of the second support column (602), the placement groove (607) is respectively opened on both sides of the lower part of the second support column, one end of the second connecting strip (606) is movably connected to the side of the placement groove (607) away from the second support column (602), one end of the spring is fixedly connected to the side of the placement groove (607) away from the second support column (602), and one side of the clamping block (608) is fixedly connected to the other end of the second connecting strip (606); The clamping unit comprises a fixed block 1 (701), a fixed plate (702), a movable block (703), a fixed block 2 (704) and a fixed column (705); the upper surface of the fixed block 1 (701) is fixedly connected to the bottom of the shell (2); the upper surface of the fixed plate (702) is fixedly connected to the lower surface of the fixed block 1 (701); the top of the fixed column (705) is fixedly connected to the middle of the lower surface of the fixed plate (702); the middle of the movable block (703) is movably connected to the outer side of the fixed column (705); and the fixed block 2 (704) is fixedly connected to the bottom end of the fixed column (705).

2. The shockproof low-voltage bus duct for DC traction in rail transit according to claim 1 is characterized in that: The housing (2) and the top cover (3) are each provided with a groove (301) on one side close to each other, vibration isolation layers (302) are provided on both sides of the groove (301), and a busbar partition (5) is movably connected in the middle of the vibration isolation layer (302).

3. The shockproof low-voltage bus duct for DC traction in rail transit according to claim 1 is characterized in that: Heat dissipation holes (4) are respectively provided on both sides of the shell (2), and there are a plurality of heat dissipation holes (4) which are equidistantly provided on both sides of the shell (2).

4. The shockproof low-voltage bus duct for DC traction in rail transit according to claim 1 is characterized in that: A heat dissipation device is arranged inside the shell (2), and the heat dissipation device comprises a slide rail (201), a slider (202), a connecting bar (203), a fan (204) and an electric push rod (205); the slide rail (201) is fixedly connected to both sides of the upper part of the shell (2); the slider (202) is slidably connected inside the slide rail (201); one end of the connecting bar (203) is fixedly connected to the slider (202); the other end of the connecting bar (203) is fixedly connected to the fan (204); and the output end of the electric push rod (205) is fixedly connected to the middle of the back side of the slider (202).

5. The shockproof low-voltage bus duct for DC traction in rail transit according to claim 1 is characterized in that: There are four groups of buffer units and snap-in units respectively, which are arranged around the upper surface of the base (1) and around the lower surface of the shell (2).

6. The shockproof low-voltage bus duct for DC traction in rail transit according to claim 1, characterized in that: The movable block (703) is in the shape of a regular trapezoid, and the second fixed block (704) is in the shape of an inverted trapezoid.

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