Draw-out type switch equipment

Abstract

The utility model relates to a draw-out switch device, comprising a cabinet body, the front surface of which is provided with an opening used for drawing; the mounting bracket comprises two groups of inner stand columns, the number of each group of inner stand columns is two, the inner stand columns are sequentially arranged from front to back, and the four inner stand columns are arranged in a rectangular shape; the number of the drawer assemblies is multiple, the drawer assemblies are sequentially arranged among the four inner stand columns in the vertical direction, each drawer assembly comprises two sliding groove units symmetrically arranged on the two sets of inner stand columns, a drawer unit is arranged between the two sliding groove units in a sliding mode, and racks are arranged at the bottoms of the sliding groove units. The rack is arranged at the bottom of the sliding groove unit, and the opening and closing walking mechanism matched with the rack is arranged on the back face of the drawer unit, so that the effect of automatically opening and closing the drawer unit is achieved through forward rotation and reverse rotation of the opening and closing walking mechanism, manual operation is reduced, and operation safety is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of switch equipment, in particular to a draw-out switch equipment. Background Art

[0002] Drawout switchgear is a type of distribution device commonly used in power systems. It's primarily used in high-voltage or low-voltage distribution systems and can be easily inserted and removed from its mounting location, facilitating maintenance and replacement. This type of switchgear is often used in industrial facilities, commercial buildings, and some large residential projects because it offers increased safety and ease of operation.

[0003] Although the current withdrawable switchgear provides high flexibility and maintainability, its opening and closing mainly relies on manual operation. During the manual operation process, it is affected by factors such as the operator's experience and attention, and is prone to human errors and misoperation. Especially in high-voltage environments, misoperation may lead to serious safety accidents. Therefore, a withdrawable switchgear is proposed to solve the above problems. Utility Model Content

[0004] The utility model provides a withdrawable switch device, which solves the problem that the opening and closing of the existing withdrawable switch device mainly depends on manual operation, and misoperation may lead to serious safety accidents.

[0005] The technical solution of the present invention to solve the above technical problems is as follows: A withdrawable switch device comprising:

[0006] The cabinet body has an opening on the front for drawing;

[0007] The mounting bracket includes two groups of inner columns, each group of inner columns has two inner columns, and the inner columns are arranged in a front-to-back order, and the four inner columns are arranged in a rectangular shape;

[0008] The drawer assembly is multiple and vertically arranged between the four inner columns. The drawer assembly includes two slide units symmetrically arranged on the two groups of inner columns. The drawer unit is slidably arranged between the two slide units, and a rack is provided at the bottom of the slide unit.

[0009] The opening and closing walking mechanism includes a double-out drive mechanism arranged on the back of the drawer unit. The two output ends of the double-out drive mechanism are both connected to the transmission shaft. Two shaft seats are provided on the back of the drawer unit. The ends of the two transmission shafts pass through the corresponding shaft seats and are installed with walking gears. The walking gears are engaged with the corresponding racks.

[0010] On the basis of the above technical solution, the present invention can also be improved as follows.

[0011] Furthermore, the slide unit includes a slide, which is fixed to a group of inner columns through two mounting plates arranged on its outer side. A first pulley is rotatably arranged on the inner side of the mounting plate close to the opening side of the cabinet, and the upper side of the first pulley is higher than the inner bottom wall of the slide.

[0012] Furthermore, the drawer unit is slidably connected to the slide groove unit through the slide rail units provided on both sides. The slide groove unit includes a guide rail provided on the side of the drawer unit, and the guide rail is movably inserted in the corresponding slide groove.

[0013] Furthermore, a second pulley is rotatably provided at one end of the guide rail close to the cabinet opening, and the second pulley passes through a notch provided above the guide rail and contacts the inner top wall of the slide groove. Two third pulleys are rotatably provided at the other end of the guide rail, and the two third pulleys are staggered up and down, and respectively pass through the notch on the guide rail and contact the inner top wall and inner bottom wall of the slide groove.

[0014] Furthermore, an arched damping plate is provided on the side wall of the guide rail, one end of the arched damping plate is fixedly connected to the side wall of the guide rail, and a contact plate corresponding to the arched damping plate is provided on the inner side of the slide groove. When the drawer unit is in a merged state, the arched damping plate conflicts with the contact plate.

[0015] Furthermore, it also includes a locking assembly for locking the drawer unit in a combined state. There are two locking assemblies, which are symmetrically arranged on the back of the drawer assembly and correspond to the two racks respectively.

[0016] Furthermore, the locking assembly includes an L-shaped support frame fixed to the back of the drawer unit, and two sliding rods are provided on the side of the end of the L-shaped support frame. The outside of the two sliding rods is slidably equipped with a locking tooth block, which can engage with the rack. A limiting plate is provided at the end of the sliding rod, and a reset spring is also provided on the outside of the sliding rod. The reset spring is located between the locking tooth block and the L-shaped support frame. An electromagnet is also provided below the end of the L-shaped support frame for magnetically attracting the locking tooth block to release it from engagement with the rack.

[0017] Furthermore, the drawer assembly also includes a partition board arranged between the four inner columns, and the partition board is located below the drawer unit.

[0018] Compared with the prior art, the technical solution of this application has the following beneficial technical effects:

[0019] 1. This withdrawable switchgear is provided with a rack at the bottom of the chute unit and an opening and closing travel mechanism adapted to the rack on the back of the drawer unit, thereby utilizing the forward and reverse rotation of the opening and closing travel mechanism to automatically open and close the drawer unit, reducing manual operation and ensuring operational safety. In addition, by providing staggered first, second, and third pulleys on the chute unit and the slide rail unit, the drawer unit can be slide-limited during opening and closing, thereby preventing it from falling during opening and closing and affecting the normal operation of the opening and closing travel mechanism.

[0020] 2. The withdrawable switchgear is provided with a locking assembly, which can play a locking effect when the drawer unit is in a closed state, and can effectively prevent the drawer unit from opening due to abnormal external force and causing safety accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a structural diagram of a withdrawable switchgear provided by the utility model;

[0022] Figure 2 This is a schematic diagram of the connection structure between the inner column and the drawer assembly provided by the utility model;

[0023] Figure 3 A schematic diagram of the drawer assembly structure provided by the utility model;

[0024] Figure 4 A schematic diagram of the structure of the slide rail unit provided by the utility model;

[0025] Figure 5 This is a schematic diagram of the structure of the opening and closing walking mechanism provided by the utility model;

[0026] Figure 6 A schematic diagram of the locking assembly structure provided by the utility model;

[0027] Figure 7 for Figure 6 Another perspective diagram of the stop lock assembly structure;

[0028] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0029] Cabinet body 1; inner column 2; drawer assembly 3; slide unit 31; slide 310; mounting plate 311; first pulley 312; contact plate 313; rack 314; drawer unit 32; slide rail unit 33; guide rail 330; second pulley 331; third pulley 332; arched damping plate 333; opening and closing walking mechanism 34; double-output drive mechanism 340; transmission shaft 341; shaft seat 342; walking gear 343; interlayer plate 35; vertical wire trough 36; contact sensor 37; resistance block 38; locking assembly 39; L-shaped support frame 390; slide rod 391; limit plate 392; locking tooth block 393; reset spring 394; electromagnet 395. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.

[0031] like Figure 1-4 As shown, a withdrawable switchgear in this embodiment comprises a cabinet 1 , a mounting bracket, a drawer assembly 3 and an opening and closing travel mechanism 34 .

[0032] The interior of the cabinet 1 is provided with a cavity for placing the drawer assembly 3 and a cavity for placing other corresponding equipment, and an opening for pulling out is provided on the front, and the opening is opposite to the cavity for placing the drawer assembly 3.

[0033] The mounting bracket is installed in the cavity where the drawer assembly 3 is placed. It includes two groups of inner columns 2, each group of inner columns 2 has two inner columns 2, and they are arranged in sequence front to back. The four inner columns 2 are arranged in a rectangular shape for mounting the drawer assembly 3.

[0034] There are multiple drawer assemblies 3, which are arranged vertically in sequence between the four inner columns 2. The specific number of drawer assemblies 3 depends on the size of the cabinet 1. The drawer assembly 3 includes two slide units 31 symmetrically arranged on two groups of inner columns 2. A drawer unit 32 is slidably arranged between the two slide units 31, and a rack 314 is provided at the bottom of the slide unit 31.

[0035] The opening and closing walking mechanism 34 includes a double-outlet drive mechanism 340 arranged on the back of the drawer unit 32. The double-outlet drive mechanism 340 consists of a drive motor and a double-outlet reducer that is transmission-connected to the output end of the drive motor. The two output ends of the double-outlet drive mechanism 340 are transmission-connected with a transmission shaft 341. Two shaft seats 342 are fixed on the back of the drawer unit 32. The ends of the two transmission shafts 341 pass through the corresponding shaft seats 342 and are respectively installed with walking gears 343. The shaft seats 342 serve as a rotation support, and the walking gear 343 is engaged with the corresponding rack 314.

[0036] With this design, the dual-output drive mechanism 340 can utilize two transmission shafts 341 to simultaneously drive two traveling gears 343 to travel on the rack 314, and then the forward and reverse rotation of the traveling gears 343 can achieve the effect of automatically opening and closing the drawer unit 32, reducing manual operation and ensuring safe operation.

[0037] It should be noted that the cabinet 1 is provided with a power supply and a PLC controller compatible with the dual-output drive mechanism 340, and corresponding operation buttons are provided on the operation interface of the cabinet 1 to realize automatic opening and closing control. The specific electrical connection method is a commonly used technical means in this field, so it will not be described in detail here.

[0038] In order to ensure the smooth opening and closing of the drawer unit 32 and avoid affecting the normal movement of the traveling gear 343, in this embodiment, the slide unit 31 includes a slide 310, which is a side-standing U-shaped trough structure. The slide 310 is fixed to a group of inner columns 2 through two mounting plates 311 welded on its outer side. The two mounting plates 311 are respectively fixed to the front and rear ends of the slide 310, and the mounting plates 311 are fixed to the corresponding columns 2 by screws. A first pulley 312 is rotatably provided on the inner side of the mounting plate 311 near the opening side of the cabinet body 1, and the upper side of the first pulley 312 is higher than the inner bottom wall of the slide 310.

[0039] In addition, the drawer unit 32 is slidably connected to the slide groove unit 31 through the slide rail units 33 arranged on both sides. The slide groove unit 31 includes a guide rail 330 fixed to the side of the drawer unit 32 by screws. The guide rail 330 is also a side-standing U-shaped groove structure, and its width is slightly smaller than the width of the slide groove 310. The guide rail 330 is opposite to the open end of the slide groove 310, and the guide rail 330 is movably inserted in the corresponding slide groove 310.

[0040] Among them, the guide rail 330 is rotatably provided with a second pulley 331 at one end close to the opening of the cabinet 1. The second pulley 331 passes through the notch provided above the guide rail 330 and contacts the inner top wall of the slide groove 310. The other end of the guide rail 330 is rotatably provided with two third pulleys 332. The two third pulleys 332 are staggered up and down, and respectively pass through the notch on the guide rail 330 and contact the inner top wall and inner bottom wall of the slide groove 310.

[0041] With such a design, during the opening and closing process of the drawer unit 32, the staggered arrangement of the first pulley 312, the second pulley 331, and the third pulley 332 can be utilized to play a role of sliding limit, thereby preventing it from falling during the opening and closing process and affecting the normal movement of the opening and closing walking mechanism 34.

[0042] Furthermore, an arched damping plate 333 is provided on the side wall of the guide rail 330, one end of the arched damping plate 333 is fixedly connected to the side wall of the guide rail 330, and the other end is free. A contact plate 313 corresponding to the arched damping plate 333 is provided on the inner side of the slide groove 310. When the drawer unit 32 is in a merged state, the arched damping plate 333 conflicts with the contact plate 313, thereby preventing the drawer unit 32 from being scratched through the friction between the arched damping plate 333 and the contact plate 313.

[0043] In order to prevent the drawer unit 32 from opening due to abnormal external force when in a closed state, thereby preventing a safety accident, the present embodiment further includes a locking assembly 39 for locking the drawer unit 32 in a combined state. There are two locking assemblies 39 symmetrically arranged on the back of the drawer assembly 3 and corresponding to the two racks 314 respectively.

[0044] The lock assembly 39 includes an L-shaped support frame 390 fixed to the back of the drawer unit 32. The L-shaped support frame 390 is fixed to the back of the drawer unit 32 by screws. Through the L-shaped design, the drive shaft 341 can be bypassed without affecting its rotation. Two slide bars 391 are fixed on the side of the end of the L-shaped support frame 390. The outside of the two slide bars 391 is slidably covered with a locking tooth block 393. The locking tooth block 393 can engage with the rack 314. The drawer unit 32 in the closed state can be locked through the locking tooth block 393 and the rack 314. A limit plate 392 is fixed on the end of the slide bar 391. A return spring 394 is also covered on the outside of the slide bar 391. The return spring 394 is located between the locking tooth block 393 and the L-shaped support frame 390. An electromagnet 395 is also provided below the end of the L-shaped support frame 390 for magnetically attracting the locking tooth block 393 to release it from the engagement relationship with the rack 314.

[0045] When the drawer unit 32 is in a closed state, the locking tooth block 393 engages with the rack 314 under the tension of the reset spring 394, thereby achieving a locking effect. When the drawer unit 32 needs to be opened, the locking tooth block 393 is sucked out by the electromagnet 395 and the reset spring 394 is squeezed to release the locking state. At the same time, when the electromagnet 395 is disconnected, the reset spring can be used to achieve the effect of locking and resetting.

[0046] Furthermore, the drawer assembly 3 further includes an interlayer plate 35 disposed between the four inner columns 2 , and the interlayer plate 35 is located below the drawer unit 32 .

[0047] Furthermore, it also includes a vertical wire trough 36 arranged behind the partition plate 35. The vertical wire trough 36 is a U-shaped structure. The partition plate 35 is fixedly connected to the side wall of the vertical wire trough 36, thereby improving the supporting force. The power signal line of the dual-output drive mechanism 340 and the electromagnet 395 pass through the vertical wire trough 36 and are connected to the two. The electromagnet 395 is also electrically connected to the above-mentioned power supply and PLC controller to achieve the effect of automatic control.

[0048] Furthermore, a resistance block 38 is provided on the back of the dual-out drive mechanism 340, and a contact sensor 37 corresponding to the resistance block 38 is provided on the front of the vertical wire trough 36. When the locking drawer unit 32 is in a merged state, the resistance block 38 contacts the contact sensor 37, and the contact sensor 37 is electrically connected to the PLC controller.

[0049] With such a design, when the locked drawer unit 32 is completed to be merged, the contact between the resistance block 38 and the contact sensor 37 can prompt the PLC controller that the merger is completed, thereby disconnecting the electromagnet 395 through the PLC controller, resetting the locking tooth block 393, and achieving the effect of automatic locking.

[0050] The above are only preferred specific implementation methods of the present invention, but the protection scope of the present invention is not limited to them. Any technician familiar with the technical field can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention within the technical scope disclosed by the present invention, and they should be covered by the protection scope of the present invention.

Claims

1. A withdrawable switchgear, characterized in that: include: A cabinet body (1) having a front surface provided with an opening for drawing; The mounting bracket comprises two groups of inner columns (2), each group of inner columns (2) has two inner columns (2) arranged in a front-to-back order, and the four inner columns (2) are arranged in a rectangular shape; A plurality of drawer assemblies (3) are arranged vertically and sequentially between four inner columns (2). The drawer assembly (3) comprises two slide slot units (31) symmetrically arranged on two groups of inner columns (2). A drawer unit (32) is slidably arranged between the two slide slot units (31). A rack (314) is provided at the bottom of the slide slot unit (31). The opening and closing travel mechanism (34) comprises a double-output drive mechanism (340) arranged on the back of the drawer unit (32), wherein both output ends of the double-output drive mechanism (340) are connected to a transmission shaft (341), and two shaft seats (342) are arranged on the back of the drawer unit (32). The ends of the two transmission shafts (341) respectively pass through the corresponding shaft seats (342) and are installed with travel gears (343), and the travel gears (343) are meshed with the corresponding racks (314).

2. The withdrawable switchgear according to claim 1, characterized in that: The slide unit (31) includes a slide (310), which is fixed to a group of inner columns (2) through two mounting plates (311) arranged on the outer side of the slide (310), and a first pulley (312) is rotatably arranged on the inner side of the mounting plate (311) close to the opening side of the cabinet (1), and the upper side of the first pulley (312) is higher than the inner bottom wall of the slide (310).

3. The withdrawable switchgear according to claim 2, characterized in that: The drawer unit (32) is slidably connected to the slide groove unit (31) through the slide rail units (33) arranged on both sides. The slide groove unit (31) includes a guide rail (330) arranged on the side of the drawer unit (32). The guide rail (330) is movably inserted into the corresponding slide groove (310).

4. The withdrawable switchgear according to claim 3, characterized in that: A second pulley (331) is rotatably provided at one end of the guide rail (330) close to the opening of the cabinet (1), and the second pulley (331) passes through a notch provided above the guide rail (330) and contacts the inner top wall of the slide groove (310). Two third pulleys (332) are rotatably provided at the other end of the guide rail (330), and the two third pulleys (332) are staggered and distributed up and down, and respectively pass through the notch on the guide rail (330) and contact the inner top wall and inner bottom wall of the slide groove (310).

5. The withdrawable switchgear according to claim 4, characterized in that: An arched damping plate (333) is provided on the side wall of the guide rail (330), one end of the arched damping plate (333) is fixedly connected to the side wall of the guide rail (330), and a contact plate (313) corresponding to the arched damping plate (333) is provided on the inner side of the sliding groove (310). When the drawer unit (32) is in a merged state, the arched damping plate (333) and the contact plate (313) are in conflict.

6. The withdrawable switchgear according to claim 1, characterized in that: It also includes a locking assembly (39) for locking the drawer unit (32) in a combined state. There are two locking assemblies (39) symmetrically arranged on the back of the drawer assembly (3) and corresponding to the two racks (314) respectively.

7. The withdrawable switchgear according to claim 6, characterized in that: The locking assembly (39) includes an L-shaped support frame (390) fixed on the back of the drawer unit (32), two slide bars (391) are provided on the side of the end of the L-shaped support frame (390), and the outside of the two slide bars (391) is slidably covered with a locking tooth block (393), and the locking tooth block (393) can be engaged with the rack (314). A limiting piece (392) is provided at the end of the slide bar (391), and a return spring (394) is also provided on the outside of the slide bar (391), and the return spring (394) is located between the locking tooth block (393) and the L-shaped support frame (390). An electromagnet (395) is also provided below the end of the L-shaped support frame (390) for magnetically attracting the locking tooth block (393) to release the meshing relationship with the rack (314).

8. The withdrawable switchgear according to claim 1, characterized in that: The drawer assembly (3) further comprises an interlayer plate (35) arranged between the four inner columns (2), and the interlayer plate (35) is located below the drawer unit (32).

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