Low-voltage switch cabinet

Abstract

The invention discloses a low-voltage switch cabinet, and relates to the technical field of electrical equipment. The low-voltage switch cabinet comprises a cabinet body and a plurality of drawer units which are slidably connected in the cabinet body at equal intervals, a plurality of air holes are formed in the front end faces of the drawer units at equal intervals, and a heat dissipation cavity communicated with the drawer units is formed in the rear portion of an inner cavity of the cabinet body. An auxiliary locking mechanism used for further locking and limiting the drawer unit in heat dissipation is arranged between the movable heat dissipation mechanism and the locking mechanism, and a matching mechanism used for being matched with the locking mechanism to enable the locking mechanism to be rapidly unlocked so that the drawer can be rapidly pulled out is arranged on the auxiliary locking mechanism. Targeted heat dissipation is achieved through the movable heat dissipation mechanism, only the drawer units needing to be cooled are subjected to heat dissipation, energy waste is avoided, the energy efficiency is improved, a higher heat dissipation effect is provided for the high-load drawer, it is ensured that equipment operates at the optimal temperature, meanwhile, automatic unlocking and rapid drawing out of the drawer are achieved through the heat dissipation mechanism, and the energy consumption is reduced. Extra tools are not needed, and operation is simplified.

Description

Technical Field

[0001] The invention relates to the technical field of electrical equipment, in particular to a low-voltage switch cabinet. Background Art

[0002] Low-voltage switchgear is a distribution equipment used in power systems. Its main function is to manage, control and protect electrical equipment in power systems to ensure safe and reliable distribution of electricity. It is widely used in various buildings, power facilities and industrial sites. According to the structure and purpose, low-voltage switchgear can be divided into three main types: fixed type, drawer type and box type. Among them, the drawer-type low-voltage switchgear is widely used due to its modular and flexible design. The drawer-type low-voltage switchgear consists of multiple independent drawer units, each of which can be withdrawn independently and has built-in electrical components such as circuit breakers, contactors, fuses, etc. Through modular design, the drawer-type switchgear can achieve flexible power distribution and control, and is easy to maintain and expand. During the operation of the drawer-type low-voltage switchgear, electrical components will generate a lot of heat during long-term operation. Since the equipment in the low-voltage switchgear is usually highly integrated and the power load is large, if the heat cannot be dissipated in time and effectively, it may cause the equipment to overheat, thereby causing a series of problems. Therefore, heat dissipation is very important for low-voltage switchgear.

[0003] Existing drawer-type low-voltage switch cabinets usually adopt an overall heat dissipation method, but overall heat dissipation means that all drawers are dissipating heat, even if some drawers do not need heat dissipation or only need very little heat dissipation, which will lead to energy waste, because the heat dissipation system will continue to operate and consume unnecessary power resources. Moreover, since the entire heat dissipation system disperses resources and cannot be concentrated on the parts that really need heat dissipation, this may cause some high-load or high-heat drawers to not get enough heat dissipation, resulting in equipment overheating, performance degradation, and even possible failures. For low-load or non-heating drawers, the role of the heat dissipation system appears redundant, and it is difficult to make targeted heat dissipation adjustments for the overall heat dissipation according to the specific situation of each drawer, and it is impossible to effectively ensure that the equipment operates within the optimal temperature range.

[0004] In addition, the existing drawer unit needs to be locked in a limited position after being placed in the switch cabinet. When the drawer unit needs to be pulled out of the switch cabinet, additional tools are usually required. Using tools to unlock the drawer will increase the operation time, especially when the drawer needs to be frequently plugged and unplugged or multiple maintenance is required. The operator may need to spend extra time to find and use these tools, resulting in inconvenience in operation. Summary of the invention

[0005] The present invention provides a low-voltage switch cabinet, which solves the problem that the overall heat dissipation method of the existing low-voltage switch cabinet lacks specificity, resulting in unnecessary energy waste and inability to concentrate heat dissipation to drawers with high loads or high heat generation, which may cause equipment overheating and performance degradation. At the same time, the operation of the drawer unit is cumbersome and requires additional tools to unlock, which increases the operation time and complexity, especially the technical problem of affecting efficiency during frequent plugging and unplugging or maintenance.

[0006] A low-voltage switch cabinet provided by the present invention comprises a cabinet body and a plurality of drawer units equidistantly slidably connected in the cabinet body, the front end surface of the drawer unit being equidistantly provided with a plurality of air holes, the rear part of the inner cavity of the cabinet body being provided with a heat dissipation cavity connected with the drawer unit, the heat dissipation cavity being provided with a mobile heat dissipation mechanism for moving the drawer units according to different heat amounts to the required heat dissipation drawer units for heat dissipation, the mobile heat dissipation mechanism comprising two sliding rods symmetrically fixedly connected between the upper and lower cavity walls of the heat dissipation cavity, an electric slide slidably connected to the outside of the sliding rods, a plurality of mounting holes equidistantly arranged on the electric slide, heat dissipation leaves rotatably connected to the mounting holes through a connecting plate, and a docking assembly arranged at the front part of the electric slide for easy communication with the drawer unit, a locking mechanism for quickly locking the drawer unit placed in the cabinet being symmetrically arranged between the drawer unit and the cabinet body, an auxiliary locking mechanism for further locking and limiting the drawer unit in heat dissipation being arranged between the mobile heat dissipation mechanism and the locking mechanism, and a matching mechanism for cooperating with the locking mechanism to quickly unlock the locking mechanism so that the drawer can be quickly pulled out is arranged on the auxiliary locking mechanism.

[0007] In a possible implementation, the locking mechanism includes a mounting plate fixedly connected to the side end surface of the drawer unit and a strip slide fixedly connected to the front cavity wall of the heat dissipation cavity, a trapezoidal block is slidably connected in the strip slide, a fixed block is fixedly connected to the front cavity wall of the heat dissipation cavity, a top spring is fixedly connected between the fixed block and the trapezoidal block, a strip groove is provided on the side of the mounting plate close to the trapezoidal block, a tongue rod that cooperates with the trapezoidal block is hinged in the strip groove through a rotating column, a limiting spring is fixedly connected between the tongue rod and the strip groove, and a locking member for clamping the trapezoidal block is provided between the front cavity wall of the heat dissipation cavity and the trapezoidal block.

[0008] In a possible implementation, the locking member includes two No. 1 strip rods respectively fixedly connected to the upper and lower sides of the trapezoidal block, and the front cavity wall of the heat dissipation cavity is symmetrically fixedly connected with a No. 2 strip rod that cooperates with the No. 1 strip rod through a fixing column, and the No. 1 strip rod and the No. 2 strip rod are respectively provided with a clamping groove on the side away from the top spring, and the front cavity wall of the heat dissipation cavity is fixedly connected with a C-shaped elastic sheet through a connecting rod, and both ends of the C-shaped elastic sheet are fixedly connected with a clamping strip that cooperates with the clamping groove.

[0009] In one possible implementation, the auxiliary locking mechanism includes two sliding grooves symmetrically opened on the electric slide, an L-shaped plate slidably connected to the sliding grooves, and a prismatic shaft that penetrates and rotates and is connected to the upper wall panel of the cabinet; a reset spring is fixedly connected between the L-shaped plate and the sliding groove; opposite sides of the two L-shaped plates are fixedly connected to push rods; the outside of the prismatic shaft is slidably connected to a double-headed protrusion that cooperates with the push rod; the middle part of the rear end face of the electric slide is fixedly connected to two rings symmetrically arranged on the outside of the prismatic shaft through a connecting frame, and the two rings are respectively located on the upper and lower sides of the double-headed protrusion; a vertical groove is opened on the side of the mounting plate close to the L-shaped plate; and a tongue that cooperates with the vertical groove is fixedly connected to the side of the L-shaped plate close to the vertical groove.

[0010] In a possible implementation, the mating mechanism includes two lever posts symmetrically fixedly connected to the rear end surface of the C-shaped elastic sheet, and the upper and lower sides of the L-shaped plate and the parallel section of the C-shaped elastic sheet are fixedly connected to arc-shaped extrusion blocks that cooperate with the lever posts through connecting blocks.

[0011] In a possible implementation, the outside of the prismatic shaft and the upper end surface of the cabinet are fixedly connected with a torsion spring, the upper part of the cabinet is slidably connected with a push rod, and the outside of the prismatic shaft is fixedly connected with a telescopic column hinged to the push rod.

[0012] In a possible implementation, the docking assembly includes spring telescopic top columns fixedly connected to the four corners of the front end surface of the electric slide, the front ends of the spring telescopic top columns are commonly fixedly connected to a docking frame, and a flexible telescopic cylinder is commonly fixedly connected between the docking frame and the electric slide.

[0013] In one possible implementation, a dust screen is fixedly connected inside the heat dissipation cavity and located behind the electric slide, a plurality of cross bars are fixedly connected equidistantly along the longitudinal direction between the left and right cavity walls of the heat dissipation cavity and located behind the dust screen, and a plurality of baffles are equidistantly connected to the outside of the cross bars along the axial direction through a swivel.

[0014] It can be seen from the above technical solutions that the present invention has the following advantages:

[0015] In the present invention, the electric slide in the mobile heat dissipation mechanism is moved to the rear of the drawer unit that needs heat dissipation to carry out targeted heat dissipation. Only the drawer unit that needs heat dissipation is cooled, thereby avoiding unnecessary energy consumption for the drawer units that do not need heat dissipation or only need very little heat dissipation, thereby improving energy utilization efficiency. It can also concentrate energy on the drawer units that really need heat dissipation, and provide a stronger heat dissipation effect for the drawer units with high load or high heat generation, ensuring that the drawer units can operate within the optimal temperature range. The heat dissipation range and intensity can be flexibly adjusted according to actual needs to adapt to different working conditions and load changes, making the low-voltage switch cabinet more adaptable and flexible.

[0016] In the present invention, when the mobile heat dissipation mechanism moves to the rear of the drawer unit to be pulled out, it drives the auxiliary locking mechanism and the matching mechanism to combine with each other to unlock the locking mechanism, so as to facilitate the unlocking and pulling out of the drawer unit. The drawer can be automatically unlocked and quickly pulled out without the need for additional tools, thus avoiding the extra time added by using additional tools and simplifying the operation steps.

[0017] In the present invention, when the drawer unit does not need to dissipate heat, the baffle at the rear naturally hangs down to seal the rear, effectively preventing dust from entering the cabinet. The reduction of dust reduces the frequency of cleaning and maintenance, thereby ensuring the safety of the low-voltage switch cabinet. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0019] Figure 1 This is a schematic diagram of the structure of the low-voltage switch cabinet provided by the present invention.

[0020] Figure 2 This is a schematic diagram of the rear view of the overall structure provided by the present invention.

[0021] Figure 3 This is a schematic diagram of the cross-sectional structure of the cabinet provided by the present invention.

[0022] Figure 4 The present invention provides Figure 3 Schematic diagram of the enlarged structure of part A in FIG.

[0023] Figure 5 The present invention provides Figure 3 Schematic diagram of the enlarged structure of part B.

[0024] Figure 6 This is a schematic diagram of the partial arrangement structure of the drawer unit and the mobile heat dissipation mechanism provided by the present invention.

[0025] Figure 7 This is a schematic diagram of the cross-sectional installation structure of the locking mechanism provided by the present invention.

[0026] Figure 8 This is a schematic diagram of the installation structure of the auxiliary locking mechanism provided by the present invention.

[0027] Fig. 9 This is a schematic diagram of the cross-sectional installation structure of the docking assembly provided by the present invention.

[0028] Fig.10 This is a schematic diagram of the installation structure of the baffle provided by the present invention when viewed from the left.

[0029] The above drawings include the following reference numerals:

[0030] 1. Cabinet; 2. Drawer unit; 3. Air hole; 4. Heat dissipation cavity; 5. Mobile heat dissipation mechanism; 51. Slide rod; 52. Electric slide; 53. Mounting hole; 54. Heat dissipation leaf; 55. Docking assembly; 551. Spring telescopic top column; 552. Docking frame; 553. Flexible telescopic cylinder; 6. Locking mechanism; 61. Mounting plate; 62. Strip slide; 63. Trapezoidal block; 64. Top spring; 65. Strip groove; 66. Tongue rod; 67. Limit spring; 68. Stopper; 68 1. No. 1 strip rod; 682. No. 2 strip rod; 683. Slot; 684. C-shaped elastic sheet; 685. Slot; 7. Auxiliary locking mechanism; 71. Sliding groove; 72. L-shaped plate; 73. Prismatic shaft; 74. Return spring; 75. Push rod; 76. Double-headed protrusion; 77. Ring; 78. Vertical groove; 79. Tongue; 8. Matching mechanism; 81. Shifting column; 82. Arc-shaped extrusion block; 9. Push rod; 10. Telescopic column; 11. Dustproof net; 12. Cross bar; 13. Baffle. DETAILED DESCRIPTION

[0031] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0032] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 6 and Figure 7The present invention provides a technical solution: a low-voltage switch cabinet, comprising a cabinet body 1 and a plurality of drawer units 2 equidistantly slidably connected in the cabinet body 1, a plurality of air holes 3 equidistantly opened on the front end surface of the drawer unit 2, a heat dissipation cavity 4 connected to the drawer unit 2 opened at the rear of the inner cavity of the cabinet body 1, a mobile heat dissipation mechanism 5 for moving the drawer unit 2 to the required heat dissipation drawer unit 2 for heat dissipation according to different heat generation is installed in the heat dissipation cavity 4, a locking mechanism 6 for quickly locking the drawer unit 2 placed in the cabinet body 1 is symmetrically installed between the drawer unit 2 and the cabinet body 1, an auxiliary locking mechanism 7 for further locking and limiting the drawer unit 2 in heat dissipation is commonly arranged between the mobile heat dissipation mechanism 5 and the locking mechanism 6, and a matching mechanism 8 for cooperating with the locking mechanism 6 to quickly unlock the locking mechanism 6 so that the drawer can be quickly pulled out is arranged on the auxiliary locking mechanism 7.

[0033] See also Figure 3 , Figure 5 , Figure 6 and Fig. 9 In this embodiment, the mobile heat dissipation mechanism 5 includes two sliding rods 51 symmetrically fixedly connected between the upper and lower cavity walls of the heat dissipation cavity 4, an electric slide 52 slidably connected to the outside of the sliding rods 51, a plurality of mounting holes 53 equidistantly arranged on the electric slide 52 in the horizontal direction, heat dissipation leaves 54 rotatably connected to the mounting holes 53 through a connecting plate, and a docking assembly 55 arranged at the front of the electric slide 52 for easy communication with the drawer unit 2. The docking assembly 55 includes a spring telescopic top column 551 fixedly connected to the four corners of the front end surface of the electric slide 52, the front end of the spring telescopic top column 551 is commonly fixedly connected to a docking frame 552, a flexible telescopic cylinder 553 is commonly fixedly connected between the docking frame 552 and the electric slide 52, and the side of the docking frame 552 close to the drawer unit 2 is an inclined surface, which facilitates the docking frame 552 to move to the rear of the drawer unit 2.

[0034] When a drawer unit 2 with high heat generation appears during operation of the drawer unit 2, the electric slide 52 is controlled to move to the rear of the drawer unit 2 with high heat generation, and the electric slide 52 drives the docking frame 552 in the docking assembly 55 to move to the rear of the drawer unit 2. Under the push of the spring telescopic top column 551, the docking frame 552 is tightly pressed against the rear port of the drawer unit 2. Then the heat dissipation blades 54 are controlled to rotate and pull the air flow in the drawer unit 2 to flow backward, so that negative pressure is formed in the drawer unit 2. Then the external air flow flows into the drawer unit 2 through the air holes 3, and the air flow flows from front to back and passes through the drawer unit 2, thereby quickly cooling the drawer unit 2 with high heat generation. When another drawer unit 2 with high heat generation appears after the drawer unit 2 is cooled, the above steps can be repeated to control the electric slide 52 to quickly move along the slide rod 51 to the rear of another drawer unit 2 that needs heat dissipation to dissipate heat.

[0035] In addition, a plurality of electric slides 52 may be provided to cope with the situation where a plurality of drawer units 2 need to dissipate heat at the same time, thereby increasing the applicable range of heat dissipation.

[0036] Targeted heat dissipation is carried out by moving the electric slide 52 to the rear of the drawer unit 2 that needs heat dissipation. Only the drawer unit 2 that needs heat dissipation is cooled, thereby avoiding unnecessary energy consumption for the drawer unit 2 that does not need heat dissipation or only needs very little heat dissipation, thereby improving energy utilization efficiency. Energy can also be concentrated on the drawer unit 2 that really needs heat dissipation, providing a stronger heat dissipation effect for the drawer unit 2 with high load or high heat generation, thereby ensuring that the drawer unit 2 can operate within the optimal temperature range.

[0037] See also Figure 4 , Figure 7 and Figure 8 In this embodiment, the locking mechanism 6 includes a mounting plate 61 fixedly connected to the side end surface of the drawer unit 2 and a strip slide 62 fixedly connected to the front cavity wall of the heat dissipation cavity 4, a trapezoidal block 63 is slidably connected in the strip slide 62, a fixed block is fixedly connected to the front cavity wall of the heat dissipation cavity 4, a top spring 64 is fixedly connected between the fixed block and the trapezoidal block 63, a strip groove 65 is opened on one side of the mounting plate 61 close to the trapezoidal block 63, a tongue rod 66 cooperating with the trapezoidal block 63 is hinged in the strip groove 65 through a rotating column, a limit spring 67 is fixedly connected between the tongue rod 66 and the strip groove 65, and the front cavity wall of the heat dissipation cavity 4 and the trapezoidal block 63 are fixedly connected. A locking member 68 for clamping the trapezoidal block 63 is commonly provided between the trapezoidal blocks 63, and the locking member 68 includes two No. 1 strip rods 681 respectively fixedly connected to the upper and lower sides of the trapezoidal block 63, and the front cavity wall of the heat dissipation cavity 4 is symmetrically fixedly connected with the No. 2 strip rod 682 cooperating with the No. 1 strip rod 681 through a fixing column, and the No. 1 strip rod 681 and the No. 2 strip rod 682 are respectively provided with a clamping groove 683 on the side away from the top spring 64, and the front cavity wall of the heat dissipation cavity 4 is fixedly connected with a C-shaped elastic sheet 684 through a connecting rod, and the two ends of the C-shaped elastic sheet 684 are fixedly connected with a clamping strip 685 cooperating with the clamping groove 683.

[0038] See also Figure 1 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8The auxiliary locking mechanism 7 includes two sliding grooves 71 symmetrically opened on the electric slide 52, an L-shaped plate 72 slidably connected to the sliding grooves 71, and a prismatic shaft 73 that penetrates and rotates on the upper wall plate of the cabinet 1. A reset spring 74 is fixedly connected between the L-shaped plate 72 and the sliding grooves 71. The opposite sides of the two L-shaped plates 72 are fixedly connected to a push rod 75. The outside of the prismatic shaft 73 is slidably connected to a double-headed protrusion 76 that cooperates with the push rod 75. The middle part of the rear end surface of the electric slide 52 is fixedly connected to two rings 7 symmetrically sleeved on the outside of the prismatic shaft 73 through a connecting frame. 7, and the two rings 77 are respectively located at the upper and lower sides of the double-headed protrusion 76, and the two rings 77 are respectively abutted against the upper and lower sides of the double-headed protrusion 76 so that the double-headed protrusion 76 can be driven to move synchronously when the electric slide 52 moves up and down. A vertical groove 78 is opened on the side of the mounting plate 61 close to the L-shaped plate 72, and a tongue 79 that cooperates with the vertical groove 78 is fixedly connected on the side of the L-shaped plate 72 close to the vertical groove 78. The outside of the prismatic shaft 73 is fixedly connected to the upper end surface of the cabinet 1 with a torsion spring, and the upper part of the cabinet 1 is slidably connected to a push rod 9, and the outside of the prismatic shaft 73 is fixedly connected to a telescopic column 10 hinged to the push rod 9.

[0039] See also Figure 4 and Figure 8 The matching mechanism 8 includes two upper and lower symmetrically fixedly connected to the rear end surface of the C-shaped elastic sheet 684, and the upper and lower sides of the L-shaped plate 72 and the C-shaped elastic sheet 684 parallel section are fixedly connected to the arc-shaped extrusion block 82 matching with the locking column 81 through a connecting block.

[0040] When the drawer unit 2 is placed in the cabinet 1, the drawer unit 2 is pushed backward to move. During the backward movement of the drawer unit 2, the mounting plate 61 is driven backward, and the mounting plate 61 then drives the tongue rod 66 backward. When the tongue rod 66 moves backward until it contacts the trapezoidal block 63, it is pushed and rotated around the rotating column, and then retracted into the strip groove 65. After the tongue rod 66 moves backward and passes over the trapezoidal block 63, it is pushed back and rotated under the push of the limit spring 67 and extends out of the strip groove 65. At this time, the extended tongue rod 66 contacts the trapezoidal block On the inclined surface of the trapezoidal block 63, (the slots 683 on the No. 1 strip rod 681 and the No. 2 strip rod 682 located on the opposite sides are in the same straight line in the initial position, so the card strip 685 is stuck in the slots 683 on the No. 1 strip rod 681 and the No. 2 strip rod 682 at the same time), the trapezoidal block 63 is in a stuck state at this time, so the tongue rod 66 that passes over the trapezoidal block 63 and abuts against the inclined surface of the trapezoidal block 63 cannot move forward, thereby completing the locking limit of the drawer unit 2 placed in the cabinet 1.

[0041] The initial position of the two-way protrusion is a position where its protrusion is perpendicular to the top rod 75. When the electric slide 52 moves up and down to dissipate heat to the drawer unit 2, it also drives the L-shaped plate 72 in the auxiliary locking mechanism 7 to move synchronously. When the electric slide 52 moves to the position directly behind the drawer unit 2, the L-shaped plate 72 also drives the latch 79 to slide into the vertical groove 78, thereby enhancing the stability of the drawer unit 2 when dissipating heat.

[0042] When the drawer unit 2 needs to be pulled out from the cabinet 1, the electric slide 52 is controlled to move to the position behind the drawer unit 2 to be pulled out, and then the push rod 9 is pushed backward to move. The push rod 9 then drives the prismatic shaft 73 to rotate through the telescopic column 10, and the rotation of the prismatic shaft 73 drives the double-headed protrusion 76 to rotate. When the double-headed protrusion 76 rotates, its protrusion will gradually contact the push rod 75 and push the two push rods 75 away from each other. The push rod 75 then drives the L-shaped plate 72 to move, and the movement of the L-shaped plate 72 drives the tongue 79 to move out of the vertical groove 78. At the same time, the L-shaped plate 72 will also drive the arc-shaped extrusion block 82 to move synchronously, so that the arc The arc surface of the C-shaped extrusion block 82 contacts the lever post 81, and the arc-shaped extrusion block 82 squeezes the lever post 81 to drive the opening of the C-shaped elastic sheet 684 to gradually expand. The C-shaped elastic sheet 684 then drives the card strip 685 to move, so that the card strip 685 moves out of the card slot 683, and then pulls the drawer unit 2 outward to move. The drawer unit 2 then drives the tongue rod 66 to move through the mounting plate 61. During the forward movement of the tongue rod 66, the inclined surface of the trapezoidal block 63 is squeezed, so that the trapezoidal block 63 moves in the direction away from the tongue rod 66. Finally, the drawer unit 2 can be pulled out, avoiding the extra time added by using additional tools.

[0043] Then the push rod 9 can be released, and the prismatic shaft 73 is reset and reversed under the action of the torsion spring, driving the double-headed protrusion 76 to reset to the initial position, and then the double-headed protrusion 76 stops pushing the push rod 75, and the reset spring 74 drives the two L-shaped plates 72 to move closer to each other, and the L-shaped plate 72 then drives the latch tongue 79 and the arc-shaped extrusion block 82 to move closer to the mounting plate 61, and the arc-shaped extrusion block 82 is separated from the shifting column 81, and then the C-shaped elastic piece 684 is reset to drive the upper and lower clamping strips 685 to move closer to each other. The top spring 64 pushes the trapezoidal block 63 to move towards the mounting plate 61 until the trapezoidal block 63 moves to the initial position. The movement of the trapezoidal block 63 drives the No. 1 strip rod 681 to move until the No. 1 strip rod 681 drives the slot 683 on its side and the slot 683 on the side of the No. 2 strip rod 682 to be in the same straight line again. Finally, the C-shaped elastic piece 684 is reset to drive the strip 685 to be clamped into the overlapping slot 683 again, thereby completing all the resets.

[0044] See also Figure 2 and Fig.10In this embodiment, a dustproof net 11 is fixedly connected to the inner cavity of the heat dissipation cavity 4 and located behind the electric slide 52, and a plurality of cross bars 12 are fixedly connected equidistantly along the longitudinal direction between the left and right cavity walls of the heat dissipation cavity 4 and located behind the dustproof net 11, and a plurality of baffles 13 are equidistantly connected to the outside of the cross bar 12 along the axial direction through a swivel.

[0045] When the heat dissipation blades 54 are running to blow air backwards, the baffle 13 located directly behind the electric slide 52 will be blown and driven to rotate around the cross bar 12, so that the airflow blown out by the heat dissipation blades 54 can be discharged from the space between the blown baffles 13, and the baffles 13 not located directly behind the electric slide 52 will be in a naturally hanging state under gravity, covering the rear of the drawer unit 2 that is not in the heat dissipation state, thereby reducing the entry of external dust into the drawer unit 2.

[0046] During operation, the drawer unit 2 is pushed backward to slide into the cabinet 1 and is quickly locked and limited by the locking mechanism 6. Then, the mobile heat dissipation mechanism 5 is controlled to operate to perform targeted heat dissipation and cooling treatment on the drawer unit 2 that needs heat dissipation. While the mobile heat dissipation mechanism 5 is operating, it will also drive the auxiliary locking mechanism 7 to operate to further lock the drawer unit 2 in the heat dissipation. When the drawer unit 2 needs to be moved out, the electric slide 52 in the mobile heat dissipation mechanism 5 is controlled to move to the position directly behind the drawer unit 2. Then, the auxiliary locking mechanism 7 is controlled to cooperate with the matching mechanism 8 to make the locking mechanism 6 unlock the drawer unit 2, so that the drawer unit 2 can be quickly pulled out.

[0047] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0048] In addition, the terms "first", "second", "number one", "number two" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second", "number one", "number two" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0049] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0050] The embodiments of this specific implementation method are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, all equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A low-voltage switch cabinet, comprising a cabinet body (1) and a plurality of drawer units (2) equidistantly slidably connected in the cabinet body (1), characterized in that: The front end surface of the drawer unit (2) is provided with a plurality of air holes (3) at equal intervals, the rear portion of the inner cavity of the cabinet (1) is provided with a heat dissipation cavity (4) connected to the drawer unit (2), and a movable heat dissipation mechanism (5) is installed in the heat dissipation cavity (4) for moving the drawer units (2) with different heat output to a desired heat dissipation drawer unit (2) for heat dissipation; The mobile heat dissipation mechanism (5) comprises: Two sliding rods (51) symmetrically fixedly connected between the upper and lower walls of the heat dissipation cavity (4), an electric slide (52) slidably connected to the outside of the sliding rod (51), a plurality of mounting holes (53) equidistantly arranged on the electric slide (52), heat dissipation leaves (54) rotatably connected to the mounting holes (53) via a connecting plate, and a docking assembly (55) arranged at the front of the electric slide (52) to facilitate communication with the drawer unit (2); A locking mechanism (6) for quickly locking the drawer unit (2) placed in the cabinet (1) is symmetrically installed between the drawer unit (2) and the cabinet (1); an auxiliary locking mechanism (7) for further locking and limiting the drawer unit (2) in the heat dissipation process is provided between the mobile heat dissipation mechanism (5) and the locking mechanism (6); and a matching mechanism (8) for cooperating with the locking mechanism (6) to quickly unlock the locking mechanism (6) so as to quickly draw out the drawer is provided on the auxiliary locking mechanism (7).

2. A low voltage switch cabinet according to claim 1, characterized in that: The locking mechanism (6) comprises a mounting plate (61) fixedly connected to the side end surface of the drawer unit (2) and a strip slide (62) fixedly connected to the front cavity wall of the heat dissipation cavity (4); a trapezoidal block (63) is slidably connected in the strip slide (62); a fixed block is fixedly connected to the front cavity wall of the heat dissipation cavity (4); a top spring (64) is fixedly connected between the fixed block and the trapezoidal block (63); a strip groove (65) is provided on one side of the mounting plate (61) close to the trapezoidal block (63); a tongue rod (66) cooperating with the trapezoidal block (63) is hingedly connected in the strip groove (65) through a rotating column; a limit spring (67) is fixedly connected between the tongue rod (66) and the strip groove (65); and a locking member (68) for locking the trapezoidal block (63) is provided between the front cavity wall of the heat dissipation cavity (4) and the trapezoidal block (63).

3. A low voltage switch cabinet according to claim 2, characterized in that: The locking member (68) comprises two No. 1 strip rods (681) respectively fixedly connected to the upper and lower sides of the trapezoidal block (63); the front cavity wall of the heat dissipation cavity (4) is symmetrically fixedly connected to the No. 2 strip rod (682) cooperating with the No. 1 strip rod (681) via a fixing column; a clamping groove (683) is respectively formed on one side of the No. 1 strip rod (681) and the No. 2 strip rod (682) away from the top spring (64); the front cavity wall of the heat dissipation cavity (4) is fixedly connected to a C-shaped elastic sheet (684) via a connecting rod; both ends of the C-shaped elastic sheet (684) are fixedly connected to clamping strips (685) cooperating with the clamping groove (683).

4. A low voltage switch cabinet according to claim 3, characterized in that: The auxiliary locking mechanism (7) comprises two sliding grooves (71) symmetrically arranged on the electric slide (52), an L-shaped plate (72) slidably connected to the sliding grooves (71), and a prism-shaped shaft (73) penetrating and rotatably connected to the upper wall plate of the cabinet (1), a return spring (74) being fixedly connected between the L-shaped plate (72) and the sliding grooves (71), a push rod (75) being fixedly connected to the opposite sides of the two L-shaped plates (72), and a sliding connection sleeve (76) being provided on the outside of the prism-shaped shaft (73). A double-headed protrusion (76) is provided to cooperate with the push rod (75); two sleeve rings (77) are fixedly connected to the middle part of the rear end surface of the electric slide (52) through a connecting frame and are symmetrically sleeved on the outside of the prismatic shaft (73), and the two sleeve rings (77) are respectively located on the upper and lower sides of the double-headed protrusion (76); a vertical groove (78) is provided on one side of the mounting plate (61) close to the L-shaped plate (72); and a latch (79) is fixedly connected to the one side of the L-shaped plate (72) close to the vertical groove (78) and cooperates with the vertical groove (78).

5. A low voltage switch cabinet according to claim 4, characterized in that: The matching mechanism (8) comprises two lever posts (81) symmetrically fixedly connected to the rear end surface of the C-shaped elastic sheet (684) in an upper and lower manner, and arc-shaped extrusion blocks (82) matching with the lever posts (81) are fixedly connected to the upper and lower sides of the parallel section of the L-shaped plate (72) and the C-shaped elastic sheet (684) through connecting blocks.

6. A low voltage switch cabinet according to claim 4, characterized in that: The outside of the prismatic shaft (73) is fixedly connected to the upper end surface of the cabinet (1) with a torsion spring, the upper part of the cabinet (1) is slidably connected to a push rod (9), and the outside of the prismatic shaft (73) is fixedly connected to a telescopic column (10) hinged to the push rod (9).

7. A low voltage switch cabinet according to claim 1, characterized in that: The docking assembly (55) comprises a spring telescopic top column (551) fixedly connected to the four corners of the front end surface of the electric slide (52); the front end of the spring telescopic top column (551) is commonly fixedly connected to a docking frame (552); and a flexible telescopic cylinder (553) is commonly fixedly connected between the docking frame (552) and the electric slide (52).

8. The low-voltage switch cabinet according to claim 1, characterized in that: A dust screen (11) is fixedly connected to the inner cavity of the heat dissipation cavity (4) and located behind the electric slide (52); a plurality of cross bars (12) are fixedly connected to the inner cavity of the heat dissipation cavity (4) and located behind the dust screen (11) at equal intervals in the longitudinal direction; and a plurality of baffles (13) are rotatably connected to the outer portion of the cross bar (12) at equal intervals in the axial direction via a rotating ring.

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