GCS low voltage withdrawable switch cabinet

Abstract

The present invention relates to the technical field of low-voltage switch cabinets, and discloses a GCS type low-voltage withdrawable switch cabinet, comprising a switch cabinet for protecting components; a drawer, which is arranged on the switch cabinet and slidably connected to the switch cabinet, and a variety of components are arranged in the drawer; a positioning unit, which is arranged on the drawer and is used to fix the position of the drawer in the switch cabinet; the positioning unit comprises a driving part, a transmission part connected to the driving part, a driven gear arranged on the drawer, two limit racks respectively meshed with the driven gears, and two groups of limit holes opened on the inner wall of the switch cabinet; the transmission part is connected to one of the limit racks; the depths of the two groups of limit holes have a predetermined difference; the status of the components in the drawer is judged by the rotation angle of the locking handle, so as to avoid the operator turning on the circuit breaker switch and loading the circuit when the components are in a test state, thereby avoiding damage to the circuit breaker or other components.

Description

Technical Field

[0001] The present invention relates to the technical field of low-voltage switch cabinets, in particular to a GCS type low-voltage withdrawable switch cabinet. Background Art

[0002] Low-voltage switchgear refers to a combination of one or more low-voltage switchgear and associated control, measurement, signaling, protection, and regulation equipment. The manufacturer is responsible for completing all internal electrical and mechanical connections and the equipment is completely assembled using structural components. It is primarily used to control, protect, and distribute electrical energy, ensuring the safe and stable operation of power systems.

[0003] For example, Chinese patent publication number CN117293679A discloses a low-voltage drawer-type switch cabinet, which includes a cabinet, a switch element drawer, a movable slide rail assembly, a fixed slide rail assembly and an oil inlet assembly; the fixed slide rail assembly is installed inside the cabinet, the movable slide rail assembly is slidably installed on the fixed slide rail assembly, the switch element drawer is fixedly connected to the movable slide rail assembly, and the oil inlet assembly is installed on the cabinet; the fixed slide rail assembly includes a mounting rail, the mounting rail is installed on the inner wall of the cabinet, a ball bearing is movably installed inside the mounting rail, partitions are fixedly installed at the upper and lower parts of the mounting rail, and a connecting rod that can move up and down is movably sleeved inside the mounting rail.

[0004] However, the above patent still has some problems. Since the position of the drawer relies on manual pushing and pulling, by changing the position of the drawer in the switch cabinet, the components in the drawer can be placed in the separated, tested and connected states. However, in actual operation, the operator does not turn on the circuit breaker when pushing the drawer into the connected state. At this time, the main contacts in the switch cabinet are in a loose state. If a load is connected to the circuit at this time, it will cause damage to the circuit breaker or other components.

[0005] Therefore, how to prevent the main contacts in the drawer from being in a loose state is a problem that needs to be solved at present. Summary of the Invention

[0006] The present invention provides a GCS type low-voltage withdrawable switch cabinet to solve the above-mentioned problems existing in the prior art.

[0007] GCS type low voltage withdrawable switchgear, including:

[0008] Switchgear, used to protect components;

[0009] A drawer is provided on the switch cabinet and is slidably connected to the switch cabinet, and a plurality of components are arranged in the drawer;

[0010] A positioning unit, provided on the drawer, for fixing the position of the drawer in the switch cabinet;

[0011] The positioning unit includes a driving part, a transmission part connected to the driving part, a driven gear provided on the drawer, two limiting racks respectively meshed with the driven gear, and two groups of limiting holes opened on the inner wall of the switch cabinet;

[0012] The transmission part is connected to one of the limit racks;

[0013] There is a predetermined difference in the depths of the two groups of limiting holes;

[0014] The position of the drawer in the switch cabinet is adjusted by pushing it. When the drawer is in a predetermined position, the rotation of the driving part drives the transmission part to move. Then, the two limiting racks are respectively moved in a direction away from the drawer by setting a driven gear, and their free ends are located in the limiting holes.

[0015] The drawer is also provided with a plurality of communication holes for gas to pass through.

[0016] Furthermore, the driving part includes a locking handle movably connected to the drawer, a connecting shaft connected to the locking handle, and a transmission assembly connected to the connecting shaft;

[0017] The transmission assembly includes a housing, two first connecting parts built into the housing, a second connecting part for connecting the two first connecting parts, and rotating shafts respectively provided on the two first connecting parts;

[0018] The connecting shaft is connected to one of the rotating shafts.

[0019] Furthermore, the transmission part includes a support base fixedly mounted on the drawer, a support shaft connected to the support base, a driving gear provided on the support shaft, a driving rack connected to the driving gear, and a plurality of limit plates provided in the length direction of the drawer;

[0020] wherein the support shaft is connected to another rotating shaft;

[0021] The driving rack is an L-shaped structure, and a limiting through hole is provided on the drawer. The shorter end of the driving rack passes through the limiting through hole and is connected to one of the limiting racks;

[0022] The limiting plate is a concave structure, the concave portion of which abuts against the drawer, and there is a predetermined gap between the shoulder portion and the drawer, and the limiting rack is located in the gap.

[0023] Furthermore, the first connecting portion includes a rotating seat, a plurality of connecting holes uniformly provided on the rotating seat, a ball bearing located in the connecting hole, a driving rod abutting against the inner ring of the ball bearing and passing through the rotating seat, a first connecting piece provided at one end of the driving rod, a fixed seat sleeved on the circumference of the rotating seat, a placement hole formed on the fixed seat, and an abutting ball located in the placement hole;

[0024] The first connecting portion and the second connecting portion have the same structure, and the driving rod in the second connecting portion is provided with a second connecting piece at both ends;

[0025] The inner wall of the shell is provided with a groove, and the abutment ball is located in the groove.

[0026] Furthermore, the first connecting part and the first connecting member and the second connecting member in the second connecting part are connected by bolts;

[0027] The driving rods corresponding to the bolts whose central axes coincide with those of the first connecting portion and the second connecting portion have their protruding ends on both sides of the rotating base level, while the driving rods corresponding to the bolts whose central axes do not coincide with each other have different protruding ends on both sides of the rotating base;

[0028] The first connecting portion and the second connecting portion are connected in sequence through the first connecting piece in the order of the extension amount of the driving rod on one side of the rotating seat from large to small.

[0029] Furthermore, the switch cabinet is provided with a plurality of placement compartments in sequence along its height direction, and the switch cabinet further comprises: a plurality of support plates for separating the placement compartments, and a propulsion unit provided on the support plates;

[0030] The propulsion unit includes a propulsion motor fixedly mounted on the support plate and two third slide rails located on the inner wall of the switch cabinet, a propulsion gear connected to the output end of the propulsion motor, a second slide rail slidably connected to the third slide rail, a first slide rail slidably connected to the second slide rail, a loading plate for connecting the first slide rail, and a propulsion rack provided on the loading plate;

[0031] The propulsion gear is engaged with the propulsion rack;

[0032] The loading plate is provided with a plurality of card interfaces, and also includes a plurality of card blocks adapted to the card interfaces and located at the bottom of the drawer, and magnets respectively located at the bottom of the card interfaces and on the card blocks.

[0033] Furthermore, a heat dissipation unit is provided in the switch cabinet;

[0034] The heat dissipation unit includes a second partition plate for connecting the top and bottom of the switch cabinet, two first partition plates for connecting the second partition plate and the side walls of the switch cabinet, a fan provided on the top of the switch cabinet, a first through hole, a second through hole, a third through hole and a heat dissipation hole being sequentially opened on the first partition plate, the second partition plate, the support plate and the switch cabinet along the direction of wind movement, a second guide plate provided at the heat dissipation hole, an adjustment component located on one side of the second guide plate, and two first guide plates provided on the adjustment component;

[0035] There is a predetermined angle between the second guide plate and the height direction of the switch cabinet.

[0036] Furthermore, the adjustment assembly includes: a mounting frame provided in the switch cabinet, a base provided on the mounting frame, two adjustment motors provided on the base, a transmission member connected to the output end of the adjustment motor, and a clamping seat connected to the transmission member;

[0037] The holder is a U-shaped structure, and the first guide plate is inserted between the U-shaped holders and fixed with connecting screws.

[0038] Furthermore, the transmission member includes a first connecting rod connected to the output end of the adjusting motor, a connecting seat provided on the base, a second rotating disk sleeved on the connecting seat and movably connected to the connecting seat, a first rotating disk provided on the second rotating disk, a plurality of first fisheye bearings respectively provided on the first rotating disk and the second rotating disk, and a movable rod for connecting the first fisheye bearings located on the first rotating disk and the second rotating disk;

[0039] wherein the diameter of the first rotating disk is greater than the diameter of the second rotating disk;

[0040] The diameter of the connecting seat gradually increases in a direction away from the base.

[0041] Furthermore, the transmission member further includes a third rotating disk sleeved on the connecting seat and movably connected to the connecting seat, a hinge block provided on the third rotating disk and movably connected to the third rotating disk, and a second fisheye bearing provided on the second rotating disk;

[0042] One end of the second fisheye bearing is connected to the hinge block;

[0043] The card seat is arranged on the third rotating disk;

[0044] The connecting seat is further provided with a first movable shaft and a second movable shaft in the radial direction. The second rotating disk is movably connected to the connecting seat through the first movable shaft. The third rotating disk is movably connected to the connecting seat through the second movable shaft.

[0045] Beneficial effects: The present invention discloses a GCS type low-voltage withdrawable switch cabinet. In order to prevent the main contacts in the drawer from being in a virtual state, the drawer is placed in a test or connection state by pulling out the drawer. At this time, the operator rotates the locking handle, and the moving locking handle can drive the connecting shaft to rotate. Then the moving connecting shaft can drive the supporting shaft to rotate through the provided transmission assembly, and then the moving supporting shaft can drive the driving gear to rotate. The moving driving gear can make the driving rack move in the length direction of the limiting through hole, and then the moving driving rack can drive the limiting rack connected to it to move, and through the provided driven gear, the two limiting racks are respectively extended in two directions and located in the limiting holes at predetermined positions. Since the depths of the limiting holes where the ends of the limiting racks are located are different in the connected and test states, the rotation angles of the locking handle are different. When the components in the drawer are in a separated state, the locking handle cannot be rotated or can only be rotated within a small range. When the components are in a connected state, the rotation angle of the locking handle is the largest, and the extension of the limiting rack is the largest. When the components are in a test state, the rotation angle of the locking handle is between the rotation angle of the locking handle when the components are separated and the rotation angle of the locking handle when the components are connected. Therefore, the state of the components in the drawer can be judged by the rotation angle of the locking handle, which prevents the operator from turning on the circuit breaker and loading the circuit when the components are in the test state, thereby avoiding damage to the circuit breaker or other components. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 This is a schematic diagram of the GCS type low-voltage withdrawable switch cabinet of the present invention;

[0047] Figure 2 It is a schematic structural diagram of the positioning unit of the present invention;

[0048] Figure 3 It is a schematic structural diagram of the transmission assembly of the present invention;

[0049] Figure 4 is a cross-sectional view of a transmission assembly of the present invention;

[0050] Figure 5 It is a schematic diagram of the rotating seat of the present invention;

[0051] Figure 6 It is a schematic structural diagram of the propulsion unit of the present invention;

[0052] Figure 7 1 is a schematic structural diagram of the first partition plate of the present invention;

[0053] Figure 8 It is a schematic structural diagram of the heat dissipation unit of the present invention;

[0054] Figure 9It is a schematic structural diagram of the regulating assembly of the present invention;

[0055] Figure 10 It is a schematic structural diagram of the unlocking portion of the present invention.

[0056] Figure numerals: 1. switch cabinet; 2. drawer; 3. positioning unit; 31. locking handle; 32. connecting shaft; 33. transmission assembly; 331. housing; 332. first connecting part; 3321. rotating seat; 3322. fixed seat; 3323. abutting ball; 3324. ball bearing; 3325. driving rod; 3326. first connecting member; 333. second connecting part; 3331. second connecting member; 334. rotating shaft; 34. driving gear; 35. driving rack; 36. supporting seat; 37. supporting shaft; 38. limiting rack; 39. driven gear; 310. limiting plate; 4. propulsion unit; 41. propulsion motor; 42. propulsion gear; 43. propulsion rack; 44. loading plate; 45. first slide rail; 46. second slide rail ;47. Third slide rail;5. Heat dissipation unit;51. Second partition plate;52. First partition plate;53. Fan;54. First through hole;55. Second through hole;56. Third through hole;57. Adjustment assembly;571. Mounting bracket;572. Base;573. Adjustment motor;574. First connecting rod;575. Movable rod;576. First fisheye bearing;577. First rotating disk;578. Second rotating disk;579. Third rotating disk;5710. Connecting seat;5711. Card seat;5712. Hinge block;5713. Second fisheye bearing;58. Second guide plate;59. First guide plate;6. Support plate;7. Unlocking part;71. Slider;72. First sleeve;73. Second sleeve;74. Sliding ball;75. Spring. DETAILED DESCRIPTION

[0057] 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 with reference to the accompanying drawings.

[0058] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0059] Secondly, the term "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in various places throughout this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive of other embodiments.

[0060] The present invention discloses a GCS type low voltage withdrawable switch cabinet, referring to Figures 1-10 ,include:

[0061] The switch cabinet 1 is used to protect components; the drawer 2 is arranged on the switch cabinet 1 and is slidably connected to the switch cabinet 1, and a variety of components are arranged in the drawer 2; the positioning unit 3 is arranged on the drawer 2, and is used to fix the position of the drawer 2 in the switch cabinet 1; the positioning unit 3 includes a driving part, a transmission part connected to the driving part, a driven gear 39 arranged on the drawer 2, two limiting racks 38 respectively meshed with the driven gear 39, and two groups of limiting holes opened on the inner wall of the switch cabinet 1; the transmission part is connected to one of the limiting racks 38; the depths of the two groups of limiting holes have a predetermined difference; the position of the drawer 2 in the switch cabinet 1 is adjusted by pushing it. When the drawer 2 is in a predetermined position, the rotation of the driving part can drive the transmission part to move, and then the two limiting racks 38 are moved away from each other by setting the driven gear 39. The drawer 2 moves in the direction of the drawer 2 and places its free end in the limiting hole; through the above method, the drawer 2 can be located in the predetermined position and the position of the drawer 2 can be fixed, that is, when the drawer 2 is not in the predetermined position, the free end of the limiting rack 38 is not in the limiting hole. At this time, the extension of the limiting rack 38 is less than its extension when it is in the limiting hole, that is, the rotation angle of the driving part is less than the predetermined rotation angle, and it is inferred that the drawer 2 is not in the predetermined position, thereby preventing the operator from closing the circuit breaker in the drawer 2, and preventing the operator from closing the circuit breaker when the drawer 2 is not in the predetermined position, resulting in a virtual connection of the joint, thereby causing damage to the switch cabinet 1; at the same time, it can also fix the position of the drawer 2, avoid the drawer 2 from being displaced when it is in the test or connection state, and then put the drawer 2 in a separated or test state when the circuit breaker is closed, thereby avoiding damage to components.

[0062] The driving part includes a locking handle 31 movably connected to the drawer 2, a connecting shaft 32 connected to the locking handle 31, and a transmission assembly 33 connected to the connecting shaft 32; the transmission assembly 33 includes a shell 331, two first connecting parts 332 built into the shell 331, a second connecting part 333 for connecting the two first connecting parts 332, and a rotating shaft 334 respectively provided on the two first connecting parts 332; the connecting shaft 32 is connected to one of the rotating shafts 334; the transmission part includes a support base 36 fixedly mounted on the drawer 2, a support shaft 37 connected to the support base 36, a driving gear 34 provided on the support shaft 37, and a driving gear 34 connected to the driving gear 3 4, and a plurality of limit plates 310 arranged in the length direction of the drawer 2; wherein the support shaft 37 is connected to another rotating shaft 334; the driving rack 35 is an L-shaped structure, and the drawer 2 is also provided with a limit through hole, the shorter end of the driving rack 35 passes through the limit through hole and is connected to one of the limit racks 38; the limit plate 310 is a concave structure, the concave part of which abuts against the drawer 2, and there is a predetermined gap between its shoulders and the drawer 2, and the limit rack 38 is located in the gap; sliding grooves are also provided on both sides of the driving rack 35, and the inner wall of the limit through hole is also provided with a limit slide rail, and the limit slide rail is located in the slide groove, when it is necessary to lock the position of the drawer 2 in the switch cabinet 1 The operator rotates the locking handle 31, and the moving locking handle 31 can drive the connecting shaft 32 to rotate. Then the moving connecting shaft 32 can drive the support shaft 37 to rotate through the provided transmission assembly 33. Then the moving support shaft 37 can drive the driving gear 34 to rotate. The moving driving gear 34 can make the driving rack 35 move in the length direction of the limiting through hole. Then the moving driving rack 35 can drive the limiting rack 38 connected to it to move, and through the provided driven gear 39, the two limiting racks 38 are respectively extended in two directions and located in the limiting holes at the predetermined positions. Since the limiting holes where the ends of the limiting racks 38 in the connection and test states are located have different depths, This results in a difference in the rotation angle of the locking handle 31. When the components in the drawer 2 are in a separated state, the locking handle 31 cannot be rotated or can only be rotated within a small range. When the components are in a connected state, the rotation angle of the locking handle 31 is the largest, and the extension of the limit rack 38 is the largest at this time. When the components are in a test state, the rotation angle of the locking handle 31 is between the rotation angle of the locking handle 31 when the components are separated and the rotation angle of the locking handle 31 when the components are connected. Therefore, the state of the components in the drawer 2 can be judged by the rotation angle of the locking handle 31, so as to avoid the operator turning on the circuit breaker switch and loading the circuit when the components are in the test state, thereby avoiding damage to the circuit breaker or other components.

[0063] In a further embodiment, the above-mentioned positioning unit 3 can determine whether the components in the drawer 2 are in a testing or separation state based on the rotation angle of the locking handle 31, and can also lock the position of the drawer 2, thereby completing the locking of the drawer 2. However, when deformation or misalignment occurs between the drive gear 34 and the drive rack 35, the drawer 2 will become locked. At this time, it is difficult for the operator to remove the drawer 2 from the switch cabinet 1, and it is difficult to replace and repair the damaged electronic components in the drawer 2.

[0064] In order to solve the above problems, the present device cooperates with the setting of the limiting through hole and the L-shaped driving rack 35. First, the shorter end of the driving rack 35 passes through the limiting through hole and the shorter end of the driving rack 35 is also provided with a threaded hole. Therefore, the limiting through hole can limit the position of the driving rack 35, avoiding the separation between the driving gear 34 and the driving rack 35 during the movement of the positioning unit 3, thereby ensuring the stability of the positioning unit 3. Secondly, the limiting slide rail divides the slide groove into two areas, namely the upper area and the lower area. The area is close to the driving gear 34 relative to the lower area, and an unlocking portion 7 is further provided in the upper area, and the unlocking portion 7 is respectively in contact with the limiting slide rail and the slide groove; the unlocking portion 7 includes two sliders 71, a hemispherical sliding ball 74 provided on the slider 71, a first sleeve 72 provided on one of the sliders 71, and a second sleeve 73 provided on the other slider 71, wherein the first sleeve 72 is sleeved on the second sleeve 73, and a spring 75 for connecting the two sliders 71 and located in the second sleeve 73, and the spring 75 is When the drawer 2 is locked, the operator can pull the drawer 2 out of the way by pulling the drawer 2 out of the way, so that the drawer 2 can be locked.

[0065] The first connecting portion 332 includes a rotating seat 3321, a plurality of connecting holes evenly arranged on the rotating seat 3321, a ball bearing 3324 located in the connecting hole, a driving rod 3325 that abuts against the inner ring of the ball bearing 3324 and passes through the rotating seat 3321, a first connecting member 3326 provided at one end of the driving rod 3325, a fixed seat 3322 that is sleeved on the circumference of the rotating seat 3321, a placement hole formed on the fixed seat 3322, and a contact ball 332 located in the placement hole. 3; The first connecting portion 332 and the second connecting portion 333 have the same structure. The driving rod 3325 in the second connecting portion 333 is provided with a second connecting piece 3331 at both ends. The inner wall of the housing 331 is provided with a groove, and the abutting ball 3323 is located in the groove. The first connecting portion 332 and the first connecting piece 3326 and the second connecting piece 3331 in the second connecting portion 333 are connected by bolts. The driving rod 3325 corresponding to the bolt located at the same axis as the first connecting portion 332 and the second connecting portion 333 is on the rotating seat 3 The protruding ends on both sides of 321 are flat, and the driving rods 3325 corresponding to the bolts whose axes do not overlap have different protrusions on both sides of the rotating seat 3321; the first connecting part 332 and the second connecting part 333 are connected in sequence by the first connecting piece 3326 in the order of the protrusion of the driving rod 3325 on one side of the rotating seat 3321 from large to small; the connecting shaft 32 moves under the drive of the locking handle 31, and the moving connecting shaft 32 can drive the rotating shaft 334 connected to it to move, so that the moving rotating shaft 334 can make the rotating seat 3321 rotate in the shell 331, and can drive the multiple driving rods 3325 thereon to move, so that the second connecting part 333 and another first connecting part 332 rotate, and then the other connecting part can drive another rotating shaft 334 to move, so that the support shaft 37 rotates, ensuring the normal rotation of the driving gear 34; by setting up the above-mentioned device, the use of gears can be reduced, and the damage of the gears during use can be avoided, which may cause the drawer 2 to be stuck, and the replacement speed of the components in the drawer 2 can be reduced.

[0066] The switch cabinet 1 is provided with a plurality of storage bins in sequence along its height direction, and the switch cabinet 1 also includes: a plurality of support plates 6 for separating the storage bins, and a propulsion unit 4 provided on the support plates 6; the propulsion unit 4 includes a propulsion motor 41 fixedly mounted on the support plates 6 and two third slide rails 47 located on the inner wall of the switch cabinet 1, a propulsion gear 42 connected to the output end of the propulsion motor 41, a second slide rail 46 slidably connected to the third slide rail 47, a first slide rail 45 slidably connected to the second slide rail 46, a loading plate 44 for connecting the first slide rail 45, and a propulsion rack 43 provided on the loading plate 44; the propulsion gear 42 is meshed with the propulsion rack 43; a plurality of card interfaces are provided on the loading plate 44, and also includes a plurality of card blocks adapted to the card interfaces and located at the bottom of the drawer 2, and Magnets on the bottom of the card interface and the card block; when the position of the drawer 2 needs to be adjusted, the propulsion motor 41 starts working, and the moving propulsion motor 41 can drive the propulsion gear 42 to rotate, and then the moving propulsion gear 42 can drive the propulsion rack 43 to move, thereby adjusting the position of the loading plate 44, and then the loading plate 44 can adjust the position of the loading plate 44 through the use of the first slide rail 45, the second slide rail 46 and the third slide rail 47, thereby adjusting the position of the drawer 2 on the loading plate 44, and avoiding the drawer 2 being too large or too heavy. The drawer 2 can be pulled out and installed, and at the same time, the positioning component can be used to check the position of the drawer 2 so that it can be located in a predetermined position, so that the components and circuits in the drawer 2 are in a state of separation, testing or connection, thereby ensuring the normal operation of the entire switch cabinet 1.

[0067] In a further embodiment, the heat dissipation method of the traditional switch cabinet 1 is mostly to provide a heat dissipation net at the bottom of the switch cabinet 1, and then use the principle of hot air moving upward to allow cold air to enter the switch cabinet 1 from the bottom of the cabinet. However, since the bottom of the cabinet is close to the ground, some dust will be carried into the cabinet during the movement of the airflow, resulting in a lot of dust attached to the components in the drawer 2, causing damage to the components.

[0068] In order to solve the above problems, a heat dissipation unit 5 is further provided in the switch cabinet 1; the heat dissipation unit 5 includes a second partition plate 51 for connecting the top and bottom of the switch cabinet 1, two first partition plates 52 for connecting the second partition plate 51 and the side walls of the switch cabinet 1, a fan 53 provided on the top of the switch cabinet 1, and a first through hole 54, a second through hole 55, a third through hole 56 and a heat dissipation hole are sequentially opened on the first partition plate 52, the second partition plate 51, the support plate 6 and the switch cabinet 1 along the direction of wind movement, a second guide plate 58 is provided at the heat dissipation hole, an adjustment component 57 is located on one side of the second guide plate 58, and two first guide plates 59 are provided on the adjustment component 57; wherein the second guide plate 58 has a predetermined angle with the height direction of the switch cabinet 1; a large amount of heat is generated when the components in the drawer 2 are working, and the drawer 2 adopts a stacked installation method, This will cause the heat in the switch cabinet 1 to increase. Therefore, when the components in the drawer 2 are working, the fan 53 starts to move. The airflow generated by the moving fan 53 can flow along the first through hole 54, the second through hole 55, and the third through hole 56 and out from the heat dissipation holes on the side of the switch cabinet 1. In this process, the airflow flows into the cabinet from the top of the cabinet, and then moves to the bottom of the switch cabinet 1, and then moves from the bottom of the switch cabinet 1 to the top of the switch cabinet 1. Compared with the traditional bottom air intake method, this device can reduce the dust on the bottom surface from entering the switch cabinet 1 with the airflow during the airflow movement. At the same time, when the airflow is located in the area between the first through hole 54 and the second through hole 55, the dust will not move into the drawer 2 with the airflow under the influence of its own gravity, thereby reducing the contact between dust and components. At the same time, the side and bottom of the switch cabinet 1 in this device are provided with detachable movable panels to clean the dust.

[0069] In a further embodiment, the above structure can reduce the movement of dust into the switch cabinet 1 along the direction of the air flow, and the heat dissipation holes on the switch cabinet 1 are located at the top of the switch cabinet 1, so the air flow carrying dust from the outside will enter the switch cabinet 1 along the heat dissipation holes on the top of the switch cabinet 1, thereby causing damage to the components in the switch cabinet 1. Therefore, a first guide plate 59 and a second guide plate 58 are set at the heat dissipation holes, so as to block the air flow entering the switch cabinet 1 through the heat dissipation holes, thereby blocking the dust at the heat dissipation holes, but it will also block the flow of the air flow produced by the fan 53, which will cause the heat in the switch cabinet 1 to be unable to dissipate, thereby causing the temperature in the switch cabinet 1 to rise.

[0070] In order to solve the above problems, the present device is provided with an adjustment component 57, which includes: a mounting frame 571 provided in the switch cabinet 1, a base 572 provided on the mounting frame 571, two adjustment motors 573 provided on the base 572, a transmission member connected to the output end of the adjustment motor 573, and a clamping seat 5711 connected to the transmission member; the clamping seat 5711 is a U-shaped structure, and the first guide plate 59 is inserted between the U-shaped clamping seats 5711 and fixed with connecting screws; the transmission member includes a first connecting rod 574 connected to the output end of the adjustment motor 573, and is provided on the base 5 72, a connecting seat 5710 mounted on the connecting seat 5710, a second rotating disk 578 sleeved on the connecting seat 5710 and movably connected to the connecting seat 5710, a first rotating disk 577 disposed on the second rotating disk 578, a plurality of first fisheye bearings 576 disposed on the first rotating disk 577 and the second rotating disk 578, respectively, and a movable rod 575 for connecting the first fisheye bearings 576 on the first rotating disk 577 and the second rotating disk 578; wherein the diameter of the first rotating disk 577 is larger than the diameter of the second rotating disk 578; wherein the diameter of the connecting seat 5710 gradually increases in a direction away from the base 572;

[0071] The transmission member also includes a third rotating disk 579 which is sleeved on the connecting seat 5710 and movably connected to the connecting seat 5710, a hinge block 5712 which is provided on the third rotating disk 579 and movably connected to the third rotating disk 579, and a second fisheye bearing 5713 which is provided on the second rotating disk 578; wherein one end of the second fisheye bearing 5713 is connected to the hinge block 5712; the clamping seat 5711 is provided on the third rotating disk 579; in a normal state, there is a predetermined angle between the first guide plate 59 and the second guide plate 58, which can block the airflow and reduce the dust from entering the switch cabinet 1 through the heat dissipation holes; and when the outside temperature is high or the electronic components in the drawer 2 have been working for too long, causing the temperature in the switch cabinet 1 to rise rapidly, the adjusting motor 573 starts to work, and the moving adjusting motor 573 can drive the first connecting rod 574 to move, and the moving first connecting rod 574 is driven by the setting of the The cooperation between a fisheye bearing 576 and a movable rod 575 can drive the first rotating disk 577 to move, so that the moving first rotating disk 577 can drive the second rotating disk 578 to move, and then the moving second rotating disk 578 can make the third rotating disk 579 move through the cooperation of the set second fisheye bearing 5713 and the hinge block 5712. At this time, the second rotating disk 578 and the third rotating disk 579 can move along the first movable axis and the second movable axis, and the angle between the plane where the second rotating disk 578 and the third rotating disk 579 are located and the plane where the bottom of the connecting seat 5710 is located is adjusted to change the position of the card seat 5711, and adjust the position of the first guide plate 59 to reduce the obstruction of the first guide plate 59 to the airflow, so that the airflow in the switch cabinet 1 can quickly flow out of the switch cabinet 1; by setting a split guide plate, the first guide plate 59 is prevented from being too long and causing its end to bend, and at the same time, it is convenient to replace the damaged first guide plate 59.

[0072] Explanation of the working principle: When it is necessary to install a drawer 2 with multiple components in the switch cabinet 1, the card block at the bottom of the drawer 2 can be placed in the card interface on the loading plate 44, and then the propulsion motor 41 starts to work. The moving propulsion motor 41 can drive the propulsion gear 42 to rotate, and then the moving propulsion gear 42 can drive the propulsion rack 43 to move, thereby adjusting the position of the loading plate 44, and then the loading plate 44 can adjust the position of the loading plate 44 through the cooperation of the first slide rail 45, the second slide rail 46 and the third slide rail 47, thereby adjusting the position of the drawer 2 on the loading plate 44 to avoid the drawer 2 being too large or too heavy. , it can complete the extraction and installation of the drawer 2, and at the same time cooperate with the provided positioning component to test the position of the drawer 2, so that it can be located in a predetermined position, so that the components and circuits in the drawer 2 are in a state of separation, testing or connection, ensuring the normal operation of the entire switch cabinet 1; according to the rotation of the propulsion motor 41, the position of the drawer 2 in the switch cabinet 1 is changed and a secondary detection is performed through the positioning unit 3 to avoid the virtual connection of the components in the drawer 2; when the drawer 2 is in a predetermined position, the operator rotates the locking handle 31, and the moving locking handle 31 can drive the connecting shaft 32 to rotate, and then the moving connecting shaft 3 The transmission assembly 33 is provided to drive the support shaft 37 to rotate, and then the moving support shaft 37 can drive the driving gear 34 to rotate. The moving driving gear 34 can make the driving rack 35 move in the length direction of the limiting through hole, and then the moving driving rack 35 can drive the limiting rack 38 connected thereto to move. Through the provided driven gear 39, the two limiting racks 38 are respectively extended in two directions and located in the limiting holes at predetermined positions. Since the limiting holes where the ends of the limiting racks 38 are located are located are different in depth between the connection state and the test state, the rotation angle of the locking handle 31 is different. When the drawer 2 is in When the components are in the separated state, the locking handle 31 cannot be rotated or can only be rotated within a small range. When the components are in the connected state, the rotation angle of the locking handle 31 is the largest, and the extension of the limit rack 38 is the largest. When the components are in the test state, the rotation angle of the locking handle 31 is between the rotation angle of the locking handle 31 when the components are separated and the rotation angle of the locking handle 31 when the components are connected. Therefore, the state of the components in the drawer 2 can be judged by the rotation angle of the locking handle 31, so that the operator can avoid turning on the circuit breaker and loading the circuit when the components are in the test state, thereby avoiding damage to the circuit breaker or other components.When the positioning unit 3 is working, the connecting shaft 32 is driven by the locking handle 31 to move, and the moving connecting shaft 32 can drive the rotating shaft 334 connected thereto to move, so that the moving rotating shaft 334 can make the rotating seat 3321 rotate in the shell 331, and can drive the multiple driving rods 3325 thereon to move, so that the second connecting part 333 and the other first connecting part 332 are rotated, and then the other connecting part can drive the other rotating shaft 334 to move, so that the support shaft 37 rotates, thereby ensuring the normal rotation of the driving gear 34; by setting up the above-mentioned device, the use of gears can be reduced, and the damage of the gears during use, which causes the drawer 2 to be stuck, can be avoided, and the speed of replacing components in the drawer 2 can be reduced;

[0073] Therefore, when the components in the drawer 2 are working, the fan 53 starts to move, and the airflow generated by the moving fan 53 can flow along the first through hole 54, the second through hole 55, and the third through hole 56 and out from the heat dissipation holes on the side of the switch cabinet 1. In this process, the airflow flows into the cabinet from the top of the cabinet, then moves to the bottom of the switch cabinet 1, and then moves from the bottom of the switch cabinet 1 to the top of the switch cabinet 1. Compared with the traditional bottom air intake method, the present device can reduce the dust on the bottom surface from entering the switch cabinet 1 with the airflow during the airflow movement. At the same time, when the airflow is located in the area between the first through hole 54 and the second through hole 55, the dust will not move into the drawer 2 with the airflow under the influence of its own gravity, thereby reducing the contact between dust and components. In normal state, there is a predetermined angle between the first guide plate 59 and the second guide plate 58, which can block the airflow and reduce the dust from entering the switch cabinet 1 from the heat dissipation holes. When the outside temperature is high or the electronic components in the drawer 2 have been working for too long, causing the temperature in the switch cabinet 1 to rise rapidly, the motor 573 is adjusted to start. When the switch cabinet 1 is switched on, the first guide plate 59 is rotated to move along the first movable axis and the second movable axis, and the second guide plate 59 is rotated to move along the second movable axis. When the switch cabinet 1 is switched on, the second guide plate 59 is rotated to move along the first movable axis and the second movable axis, and the angle between the plane where the second and third rotating plates 578 and 579 are located and the plane where the bottom of the connecting seat 5710 is located is adjusted, thereby changing the position of the clamping seat 5711 and adjusting the position of the first guide plate 59. The obstruction of the first guide plate 59 to the airflow is reduced, so that the airflow in the switch cabinet 1 can quickly flow out of the switch cabinet 1. The split guide plate is used to prevent the first guide plate 59 from being too long and causing its end to bend, and at the same time, it is convenient to replace the damaged first guide plate 59.

[0074] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, various equivalent transformations can be made to the technical solutions of the present invention, and these equivalent transformations all fall within the scope of protection of the present invention.

Claims

1. GCS type low voltage withdrawable switch cabinet, characterized by: include: Switchgear, used to protect components; A drawer is provided on the switch cabinet and is slidably connected to the switch cabinet, and a plurality of components are provided in the drawer; a positioning unit is provided on the drawer and is used to fix the position of the drawer in the switch cabinet; The positioning unit includes a driving part, a transmission part connected to the driving part, a driven gear provided on the drawer, two limiting racks respectively meshed with the driven gear, and two groups of limiting holes opened on the inner wall of the switch cabinet; The transmission part is connected to one of the limit racks; wherein the depths of the two sets of limit holes have a predetermined difference; The position of the drawer in the switch cabinet is adjusted by pushing it. When the drawer is in a predetermined position, the rotation of the driving part can drive the transmission part to move, and then the two limiting racks are respectively moved in a direction away from the drawer by setting a driven gear, and their free ends are located in the limiting holes; the driving part includes a locking handle movably connected to the drawer, a connecting shaft connected to the locking handle, and a transmission assembly connected to the connecting shaft; the transmission assembly includes a housing, two first connecting parts built into the housing, a second connecting part for connecting the two first connecting parts, and a rotating shaft respectively provided on the two first connecting parts; the connecting shaft is connected to one of the rotating shafts; The first connecting portion includes a rotating seat, a plurality of connecting holes evenly arranged on the rotating seat, a ball bearing located in the connecting hole, a driving rod abutting against the inner ring of the ball bearing and passing through the rotating seat, a first connecting piece provided at one end of the driving rod, a fixed seat sleeved on the circumference of the rotating seat, a placement hole formed on the fixed seat, and an abutting ball located in the placement hole; the first connecting portion has the same structure as the second connecting portion, and second connecting pieces are provided at both ends of the driving rod in the second connecting portion; The inner wall of the housing is provided with a groove, and the abutment ball is located in the groove; The first connecting portion and the first connecting member and the second connecting member in the second connecting portion are connected by bolts; The driving rods corresponding to the bolts whose central axes coincide with those of the first connecting portion and the second connecting portion have their protruding ends on both sides of the rotating base aligned, while the driving rods corresponding to the bolts whose central axes do not coincide with each other have different protrusions on both sides of the rotating base; wherein the first connecting portion and the second connecting portion are connected by the first connecting member in descending order of the protrusion of the driving rods on one side of the rotating base; The switch cabinet is further provided with a heat dissipation unit, which includes an adjustment component and two first guide plates provided on the adjustment component; The adjustment assembly includes: a mounting frame provided in the switch cabinet, a base provided on the mounting frame, two adjustment motors provided on the base, a transmission member connected to the output end of the adjustment motor, and a clamping seat connected to the transmission member; the clamping seat is a U-shaped structure, and the first guide plate is inserted between the U-shaped clamping seats and fixed using connecting screws; The transmission member includes a first connecting rod connected to the output end of the regulating motor, a connecting seat provided on the base, a second rotating disk sleeved on the connecting seat and movably connected to the connecting seat, a first rotating disk provided on the second rotating disk, a plurality of first fisheye bearings provided on the first rotating disk and the second rotating disk, respectively, and a movable rod for connecting the first fisheye bearings on the first rotating disk and the second rotating disk; wherein the diameter of the first rotating disk is larger than the diameter of the second rotating disk; The diameter of the connecting seat gradually increases in a direction away from the base; The transmission member further includes a third rotating disk sleeved on the connecting seat and movably connected to the connecting seat, a hinge block provided on the third rotating disk and movably connected to the third rotating disk, and a second fisheye bearing provided on the second rotating disk; wherein one end of the second fisheye bearing is connected to the hinge block; The card seat is arranged on the third rotating disk.

2. The GCS low-voltage withdrawable switchgear according to claim 1, characterized in that: The transmission part includes a support base fixedly mounted on the drawer, a support shaft connected to the support base, a driving gear provided on the support shaft, a driving rack connected to the driving gear, and a plurality of limit plates provided in the length direction of the drawer; wherein the support shaft is connected to another rotating shaft; The driving rack is an L-shaped structure, and a limiting through hole is provided on the drawer. The shorter end of the driving rack passes through the limiting through hole and is connected to one of the limiting racks; The limiting plate is a concave structure, the concave portion of which abuts against the drawer, and there is a predetermined gap between the shoulder portion and the drawer, and the limiting rack is located in the gap.

3. The GCS low-voltage withdrawable switchgear according to claim 2, characterized in that: The switch cabinet is provided with a plurality of storage compartments in sequence along its height direction, and the switch cabinet further comprises: a plurality of support plates for separating the storage compartments, and a propulsion unit provided on the support plates; The propulsion unit includes a propulsion motor fixedly mounted on the support plate and two third slide rails located on the inner wall of the switch cabinet, a propulsion gear connected to the output end of the propulsion motor, a second slide rail slidably connected to the third slide rail, a first slide rail slidably connected to the second slide rail, a loading plate for connecting the first slide rail, and a propulsion rack provided on the loading plate; The propulsion gear is engaged with the propulsion rack; The loading plate is provided with a plurality of card interfaces, and also includes a plurality of card blocks adapted to the card interfaces and located at the bottom of the drawer, and magnets respectively located at the bottom of the card interfaces and on the card blocks.

4. The GCS low-voltage withdrawable switchgear according to claim 3, characterized in that: The heat dissipation unit includes a second partition plate for connecting the top and bottom of the switch cabinet, two first partition plates for connecting the second partition plate and the side walls of the switch cabinet, a fan provided on the top of the switch cabinet, a first through hole, a second through hole, a third through hole and a heat dissipation hole sequentially opened on the first partition plate, the second partition plate, the support plate and the switch cabinet along the direction of wind movement, a second guide plate provided at the heat dissipation hole, and an adjustment component located on one side of the second guide plate; There is a predetermined angle between the second guide plate and the height direction of the switch cabinet.

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