Anti-closing insulation tool for power distribution cabinet door

Abstract

The invention relates to the technical field of power distribution cabinets, in particular to a power distribution cabinet door anti-closing insulation tool which comprises a protective folding door installed at a power distribution cabinet door, a traction unit for driving the protective folding door to be opened and a locking unit for locking the open state of the protective folding door. The protective folding door comprises a first movable hinge and a second movable hinge which are connected in a hinged mode, the end, away from the hinged end of the first movable hinge, of the second movable hinge is connected with a connecting base of the traction unit, one connecting base is connected with a mounting block, and an insulating handle vertically extending up and down is arranged on the mounting block. A protruding clamping block is arranged on one side of the mounting block; the locking unit comprises a fixed seat, a movable plate is slidably mounted in an open groove in the fixed seat, a plurality of clamping teeth are arranged on the surface of the movable plate, and according to the technical scheme, the clamping blocks of the connecting seat are clamped to the positions, where the clamping teeth lock the connecting seat, of the clamping blocks, so that it is guaranteed that the protective folding door cannot move to make contact with workers in the open state.

Description

Technical Field

[0001] The invention relates to the technical field of power distribution cabinets, and in particular to an insulating tool for preventing a door of a power distribution cabinet from closing. Background Art

[0002] The distribution cabinet (box) is divided into power distribution cabinet (box), lighting distribution cabinet (box), and metering cabinet (box). It is the final equipment of the power distribution system. The distribution cabinet is a general term for the motor control center. The distribution cabinet is used in places where the load is relatively dispersed and there are fewer circuits; the motor control center is used in places where the load is concentrated and there are more circuits; they distribute the power of a circuit of the upper-level distribution equipment to the nearest load. This level of equipment should provide protection, monitoring and control for the load.

[0003] Existing power distribution cabinets are prone to dust, flying insects and other debris, resulting in a high failure rate. Since the internal electrical components of the power distribution cabinet are usually densely arranged, the poor heat dissipation environment makes the insulation measures in the power distribution cabinet easily damaged and needs to be replaced frequently. In addition, the power distribution cabinet door needs to be kept open during operation. However, the power distribution cabinet door in the prior art is in an active state when opened, which is easy to contact with the staff, causing electric shock accidents, which is very unsafe. Summary of the invention

[0004] In view of the above problems, it is necessary to provide an insulating tool for preventing the door of a distribution cabinet from closing in view of the existing technical problems.

[0005] In order to solve the problems of the prior art, the technical solution adopted by the present invention is:

[0006] A power distribution cabinet door anti-closing insulating tool comprises a protective folding door installed at the power distribution cabinet door, a traction unit for driving the protective folding door to open, and a locking unit for locking the open state of the protective folding door, wherein the protective folding door comprises two groups of hingedly connected first movable leaves and second movable leaves, one end of each group of first movable leaves is rotatably installed on one side of the cabinet door, one end of the second movable leaf hinged away from the first movable leaf is connected to a connecting seat of the traction unit, the connecting seat is slidably installed in an insulating limit strip arranged on the top of the power distribution cabinet, and the connecting seat connecting each group of second movable leaves is synchronously moved in the opposite direction through a synchronous driving unit; one of the connecting seats is connected to a mounting block, and an insulating handle extending vertically up and down is arranged on the mounting block; a protruding card block is arranged on one side of the mounting block; the locking unit comprises a fixed seat arranged at one end of the insulating limit strip, the fixed seat is provided with a slot extending along the length direction of the insulating limit strip, a movable plate is slidably installed in the slot, the movable plate moves in a horizontal direction perpendicular to the length direction of the slot, a plurality of latch teeth are arranged on the surface of the movable plate, and the latch teeth are evenly spaced along the length direction of the movable plate, and the card block of the connecting seat is latched at the position where the latch teeth lock the connecting seat.

[0007] Preferably, a plurality of second guide rods are provided on the side of the movable plate away from the latch tooth, the length direction of the second guide rods is perpendicular to the length direction of the fixed seat, and the second guide rods are inserted into the fixed seat; a third spring is sleeved on the second guide rod, the third spring elastically connects the fixed seat and the movable plate, and the third spring applies an elastic force to move the movable plate toward the slotted opening; a first inclined surface is provided on the side of the block facing the latch tooth, and the first inclined surface fits the latch tooth to move and compress the third spring.

[0008] Preferably, baffles extending along the length direction of the slot are provided on the upper and lower sides of the slot, and the movable plate is attached to the baffles to limit movement; and the gap between the baffles is not less than the width of the block and the tooth.

[0009] Preferably, one end of the second guide rod is connected to a limit plate, and the limit plate is parallel to the fixed seat; a mounting bracket is fixedly mounted on the fixed seat, and a pressing block that moves in a vertical direction is provided on the mounting bracket, and the bottom end of the pressing block is inserted between the fixed seat and the limit plate, and an inclined second slope is provided at the bottom of the pressing block, and the second slope makes the pressing block have a width that gradually increases from bottom to top; when the pressing block moves downward, the second slope fits the limit plate and pushes the limit plate to move to the side away from the blocking block.

[0010] Preferably, a vertical third guide rod is provided on the upper side of the pressing block, the third guide rod is inserted into the mounting bracket, and the top end of the third guide rod is connected to the horizontal contact plate; a fourth spring is sleeved on the third guide rod, the fourth spring elastically connects the mounting bracket and the contact plate, and the fourth spring applies an upward elastic force to the contact plate.

[0011] Preferably, the first hinge seat is hingedly installed at the upper and lower ends of the first movable page on a side away from the second movable page, and the second hinge seat is hingedly installed at the upper and lower ends of the second movable page on a side away from the first movable page; the upper and lower ends of the first movable page and the second movable page are provided with sliding rails, the sliding rails are installed on the distribution cabinet door, the first hinge seat is fixedly installed on both sides of the first hinge seat, and the upper and lower sides of the sliding rails are provided with waist-shaped holes that pass through the sliding rails and the distribution cabinet, and the waist-shaped holes extend along the length direction of the insulating limit strip, and vertical extension rods are provided on the upper and lower sides of the second hinge seat, and the second hinge seat is slidably installed in the waist-shaped holes through the extension rods; the extension rod passes through the waist-shaped hole and is inserted into the connecting seat on the top of the distribution cabinet.

[0012] Preferably, the synchronous drive unit includes a rack installed on the connecting seat, the rack extends along the length direction of the insulating limit strip, and the racks on the two connecting seats are arranged opposite to each other; the synchronous drive unit also includes a gear rotatably installed on the distribution cabinet, and the gear is respectively meshed and connected with the two racks.

[0013] Preferably, the connecting seat is provided with a first guide rod extending along the length direction of the insulating limit strip, the first guide rod is inserted into a guide sleeve installed at the outward end of the insulating limit strip, and a second spring is sleeved on the first guide rod, and the second spring applies elastic force to move the connecting seat toward the end of the insulating limit strip away from the guide sleeve.

[0014] Preferably, a through hole is provided on the slide rail, and a first piston cylinder is installed at the through hole, and a first piston rod is slidably installed in the first piston cylinder, and the first piston rod passes through the through hole and protrudes from the surface of the slide rail; the first piston cylinder is connected to the second piston cylinder through a pipeline, and the first piston cylinder, the pipeline and the second piston cylinder are filled with hydraulic oil; the second piston rod is slidably installed in the second piston cylinder, and the second piston rod passes through the distribution cabinet and protrudes from the upper surface of the distribution cabinet, and the position of the second piston rod is below the connecting seat when the first movable page and the second movable page are horizontal.

[0015] Preferably, the first piston cylinder is further provided with a piston plate, and the piston plate is elastically connected to the first piston rod via a first spring.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] Firstly, the second movable page in the present invention moves under the traction of the traction unit so that the protective folding door can be opened from the center, which is convenient for the staff to operate. An insulating handle is provided on the connecting seat, and the insulating handle and the insulating limit strip are both made of insulating materials, thereby ensuring that the staff will not be electrocuted when touching the insulating handle to drive the protective folding door to open and close.

[0018] Secondly, the locking unit in the present invention is used to lock the first movable page and the second movable page. The existence of the locking unit ensures that the protective folding door will not move and contact the staff when the staff performs maintenance and other operations on the distribution cabinet, and the staff only needs to touch the insulating handle during the locking process, and the unlocking process only needs to release the contact plate, which reduces the difficulty of operation while improving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional insulating tool for preventing the door of a power distribution cabinet from closing in the first working state. Figure 1 ;

[0020] Figure 2 It is a three-dimensional structural exploded diagram of a power distribution cabinet door anti-closing insulation tool in a first working state;

[0021] Figure 3 yes Figure 2 A local enlarged view of point A;

[0022] Figure 4 It is a three-dimensional insulating tool for preventing the door of a power distribution cabinet from closing in the first working state. Figure 2 ;

[0023] Figure 5 yes Figure 4 A partial enlarged view of point B;

[0024] Figure 6 It is a stereoscopic diagram of a power distribution cabinet door anti-closing insulating tool in a second working state;

[0025] Figure 7 yes Figure 6 A partial enlarged view of point C;

[0026] Figure 8 It is a main view of a power distribution cabinet door anti-closing insulating tool in the second working state;

[0027] Fig. 9 yes Figure 8 A partial enlarged view of point D;

[0028] Fig.10 yes Figure 8 A cross-sectional view at EE of FIG.

[0029] Fig.11 yes Fig.10 A partial enlarged view of point F.

[0030] The numbers in the figure are: 1, protective folding door; 11, first movable page; 111, first hinge seat; 12, second movable page; 121, second hinge seat; 122, extension rod; 13, slide rail; 131, waist hole; 132, through hole; 14, first piston cylinder; 141, first piston rod; 142, piston plate; 143, first spring; 15, pipeline; 16, second piston cylinder; 161, second piston rod; 2, traction unit; 21, connecting seat; 211, mounting block; 212, insulating handle; 213, clamping block; 214, first A bevel; 215, a first guide rod; 216, a second spring; 22, an insulating limit strip; 221, a guide sleeve; 23, a synchronous drive unit; 231, a rack; 232, a gear; 3, a locking unit; 31, a fixed seat; 311, a slot; 312, a stop strip; 32, a movable plate; 321, a latch; 322, a second guide rod; 323, a third spring; 324, a limit plate; 33, a mounting bracket; 331, a pressing block; 332, a second bevel; 333, a third guide rod; 334, a contact plate; 335, a fourth spring. DETAILED DESCRIPTION

[0031] In order to further understand the features, technical means, specific objectives and functions of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0032] Reference Figures 1 to 11 :

[0033] A power distribution cabinet door anti-closing insulating tool, comprising a protective folding door 1 installed at the power distribution cabinet door, a traction unit 2 for driving the protective folding door 1 to open, and a locking unit 3 for locking the protective folding door 1 in an open state, wherein the protective folding door 1 comprises two groups of hingedly connected first movable leaves 11 and second movable leaves 12, one end of each group of first movable leaves 11 is rotatably installed on one side of the cabinet door, one end of the second movable leaf 12 hinged away from the first movable leaf 11 is connected to a connecting seat 21 of the traction unit 2, the connecting seat 21 is slidably installed in an insulating limit strip 22 arranged on the top of the power distribution cabinet, and the connecting seat 21 connecting each group of second movable leaves 12 is synchronously moved in the opposite direction through a synchronous driving unit 23; wherein A connecting seat 21 is connected to a mounting block 211, and an insulating handle 212 extending vertically up and down is provided on the mounting block 211; a protruding card block 213 is provided on one side of the mounting block 211; the locking unit 3 includes a fixed seat 31 arranged at one end of the insulating limit strip 22, and a slot 311 extending along the length direction of the insulating limit strip 22 is provided on the fixed seat 31, and a movable plate 32 is slidably installed in the slot 311, and the movable plate 32 moves in a horizontal direction perpendicular to the length direction of the slot 311. A plurality of latch teeth 321 are provided on the surface of the movable plate 32, and the latch teeth 321 are evenly spaced along the length direction of the movable plate 32. The card block 213 of the connecting seat 21 is engaged with the latch teeth 321 to lock the position of the connecting seat 21.

[0034] The protective folding door 1 in the present application is installed at the door of the power distribution cabinet. The two groups of first movable leaves 11 and second movable leaves 12 of the protective folding door 1 are hingedly connected. When the two groups of first movable leaves 11 and second movable leaves 12 are in a flush state, the door of the power distribution cabinet is closed. The first movable leaves 11 are respectively rotatably installed on both sides of the door of the power distribution cabinet. The second movable leaves 12 move under the traction of the traction unit 2 so that the protective folding door 1 can be opened from the center, which is convenient for the staff to operate. In order to prevent the first movable leaves 11 and the second movable leaves 12 from moving and contacting the staff when the staff operates, the locking unit 3 in this embodiment is used to lock the first movable leaves 11 and the second movable leaves 12. The free end of the second movable leaf 12 in this embodiment The connecting seat 21 connected to the traction unit 2, the connecting seat 21 changes the straight-line distance between the free end of the second movable leaf 12 and the rotation axis of the first movable leaf 11 while moving linearly in the horizontal direction in the insulating limit strip 22, thereby changing the angle between the first movable leaf 11 and the second movable leaf 12, and realizing the change of the release range of the distribution cabinet door. An insulating handle 212 is arranged on the connecting seat 21, and the insulating handle 212 and the insulating limit strip 22 are both made of insulating materials, thereby ensuring that the staff will not be electrocuted when touching the insulating handle 212 to drive the protective folding door 1 to open and close. When the protective folding door 1 is opened, the staff holds the insulating handle 212 to drive the connecting seat 21 to move toward the fixed seat 31 of the locking unit 3, and the connecting The block 213 on one side of the seat 21 enters the slot 311 of the fixed seat 31. The movable plate 32 slidably installed in the slot 311 moves the moving path of the block 213 in a horizontal direction perpendicular to the length direction of the slot 311 to avoid it when the block 213 enters, and resets after the connecting seat 21 stops moving. The block 213 is engaged with the latch teeth 321 set on the surface of the movable plate 32, thereby fixing the position of the connecting seat 21. The position of the connecting seat 21 is fixed, that is, the free end position of the second movable leaf 12 is fixed, and the position of the first movable leaf 11 and the second movable leaf 12 is fixed, that is, the angle between the first movable leaf 11 and the second movable leaf 12 is locked, and the protective folding door 1 is locked. The existence of the locking unit 3 ensures that the staff can perform maintenance on the distribution cabinet, etc. During operation, the protective folding door 1 will not move and contact the staff, and during the locking process, the staff only needs to touch the insulating handle 212, which improves safety. In this embodiment, the latch teeth 321 on the movable plate 32 are evenly spaced along the length direction of the slot 311, so the locking position of the connecting seat 21 can be adjusted to lock the protective folding door 1 in different release ranges; in this embodiment, the two second movable leaves 12 of the protective folding door 1 are respectively connected to a connecting seat 21, and the connecting seats 21 are synchronously moved in the opposite direction through the synchronous driving unit 23, so the staff only needs to move and lock one of the insulating handles 212 by hand, which simplifies the operation difficulty, reduces the number of locking units 3, and reduces production costs.

[0035] In order to solve the problem of how to make the movable plate 32 automatically avoid the block 213 when the block 213 enters the slot 311 of the fixing seat 31, the following features are specifically set:

[0036] A plurality of second guide rods 322 are provided on the side of the movable plate 32 away from the latch tooth 321. The length direction of the second guide rods 322 is perpendicular to the length direction of the fixed seat 31, and the second guide rods 322 are inserted into the fixed seat 31; a third spring 323 is sleeved on the second guide rod 322, and the third spring 323 elastically connects the fixed seat 31 and the movable plate 32, and the third spring 323 applies elastic force to move the movable plate 32 toward the opening of the slot 311; a first inclined surface 214 is provided on the side of the block 213 facing the latch tooth 321, and the first inclined surface 214 fits the latch tooth 321 to move and compress the third spring 323.

[0037] The movable plate 32 in this embodiment is inserted on the fixed seat 31 through the second guide rod 322, and the second guide rod 322 guides the movement path of the movable plate 32. When the block 213 contacts the tooth 321, the first inclined surface 214 on one side of the block 213 fits the tooth 321 of the movable plate 32 when moving. The pressure of the block 213 on the tooth 321 causes the movable plate 32 to compress the third spring 323, and the movable plate 32 moves inward to facilitate the continued movement of the block 213. After the block 213 passes through a tooth 321, the movable plate 32 can move and reset under the elastic force of the third spring 323, and the connecting seat 21 can be quickly locked when the staff stops moving the connecting seat 21.

[0038] In order to solve the problem of how to limit the moving distance of the third spring 323 on the movable plate 32, the following features are specifically set:

[0039] The upper and lower sides of the slot 311 are provided with blocking bars 312 extending along the length direction of the slot 311 , and the movable plate 32 is attached to the blocking bars 312 to limit movement; the gap between the blocking bars 312 is not less than the width of the block 213 and the tooth 321 .

[0040] In this embodiment, the movable plate 32 moves in the slot 311, and the blocking bars 312 on the upper and lower sides of the slot 311 are attached to the movable plate 32 to limit the movement of the movable plate 32, preventing the movable plate 32 from escaping from the slot 311 under the elastic force of the third spring 323. The gap between the blocking bars 312 is not less than the width of the block 213 and the locking tooth 321 to ensure that the block 213 and the locking tooth 321 can pass through the blocking bars 312 for locking.

[0041] In order to solve the problem of how the locking unit 3 unlocks the connection socket 21, the following features are specifically provided:

[0042] One end of the second guide rod 322 is connected to the limit plate 324, and the limit plate 324 is parallel to the fixed seat 31; a mounting bracket 33 is fixedly installed on the fixed seat 31, and a pressing block 331 that moves in the vertical direction is provided on the mounting bracket 33, and the bottom end of the pressing block 331 is inserted between the fixed seat 31 and the limit plate 324, and an inclined second inclined surface 332 is provided at the bottom of the pressing block 331, and the second inclined surface 332 makes the pressing block 331 have a width that gradually increases from bottom to top; the pressing block 331 moves downward, and the second inclined surface 332 fits the limit plate 324 to push the limit plate 324 to move to the side away from the blocking block 213.

[0043] A vertical third guide rod 333 is provided on the upper side of the pressing block 331, the third guide rod 333 is inserted into the mounting bracket 33, and the top of the third guide rod 333 is connected to the horizontal contact plate 334; a fourth spring 335 is sleeved on the third guide rod 333, the fourth spring 335 elastically connects the mounting bracket 33 and the contact plate 334, and the fourth spring 335 applies an upward elastic force to the contact plate 334.

[0044] In this embodiment, a mounting bracket 33 is further provided on the fixed seat 31, and a pressing block 331 is inserted on the mounting bracket 33 through a third guide rod 333. The bottom of the pressing block 331 is inserted between the fixed seat 31 and the limiting plate 324 connected to the second guide rod 322 of the movable plate 32. Due to the second inclined surface 332 at the bottom of the pressing block 331, the pressing block 331 has a width that gradually increases from bottom to top. When the pressing block 331 moves downward, the pressing block 331 pushes the limiting plate 324 to the side away from the fixed seat 31. The third spring 323 is moved to compress the third spring 323, so that the latch tooth 321 disengages from the latch block 213 of the connecting seat 21, thereby releasing the lock on the connecting seat 21. Under normal conditions, the pressing block 331 is fitted into the upper side of the mounting bracket 33 under the elastic force exerted on the top contact plate 334 by the fourth spring 335 mounted on the third guide rod 333. When the connecting seat 21 needs to be unlocked, the staff only needs to press the contact plate 334 downwards. The contact plate 334 can be made of insulating material to prevent the staff from electric shock when touching it.

[0045] In order to solve the problem of how to connect the protective folding door 1 to the connecting seat 21 of the traction unit 2, the following features are specifically set:

[0046] The first hinged seat 111 is hingedly installed at the upper and lower ends of the side of the first movable page 11 away from the second movable page 12, and the second hinged seat 121 is hingedly installed at the upper and lower ends of the side of the second movable page 12 away from the first movable page 11; the upper and lower ends of the first movable page 11 and the second movable page 12 are provided with sliding rails 13, and the sliding rails 13 are installed on the door of the distribution cabinet. The first hinged seat 111 is fixedly installed on both sides of the first hinged seat 111, and the upper and lower sides of the sliding rail 13 are provided with waist-shaped holes 131 that pass through the sliding rail 13 and the distribution cabinet, and the waist-shaped holes 131 extend along the length direction of the insulating limit strip 22, and vertical extension rods 122 are provided on the upper and lower sides of the second hinged seat 121, and the second hinged seat 121 is slidably installed in the waist-shaped hole 131 through the extension rod 122; the extension rod 122 passes through the waist-shaped hole 131 and is inserted into the connecting seat 21 at the top of the distribution cabinet.

[0047] In this embodiment, the slide rail 13 is fixedly installed on the upper and lower sides of the distribution cabinet door. In order to keep the first movable page 11 and the second movable page 12 in a flush state and fit with the slide rail 13, the first movable page 11 and the second movable page 12 are respectively slidably installed on the slide rail 13 and hinged to the first hinge seat 111 and the second hinge seat 121. The first hinge seat 111 is fixed at both ends of the slide rail 13, thereby ensuring that the rotation axis position of the first movable page 11 is stable, and the second movable page 12 is located at one end of the first movable page 11 and hinged to the second hinge seat. The seat 121 is hinged, and the second hinged seat 121 can ensure that the opening and closing state of the protective folding door 1 changes when it slides in the slide rail 13. The vertical extension rod 122 arranged on the second hinged seat 121 extends to the outside of the distribution cabinet through the waist-shaped hole 131 on the slide rail 13 and is plugged and connected with the connecting seat 21, so that when the external operation connecting seat 21 moves, the first movable leaf 11 and the second movable leaf 12 are driven to flip and open; in this embodiment, the waist-shaped hole 131 is blocked by the bottom of the connecting seat 21 to ensure the sealing effect of the protective folding door 1 on the distribution cabinet.

[0048] In order to solve the problem of how the synchronous driving unit 23 drives the two connecting seats 21 to move synchronously in opposite directions, the following features are specifically set:

[0049] The synchronous drive unit 23 includes a rack 231 installed on the connecting seat 21, the rack 231 extends along the length direction of the insulating limit strip 22, and the racks 231 on the two connecting seats 21 are arranged opposite to each other; the synchronous drive unit 23 also includes a gear 232 rotatably installed on the distribution cabinet, and the gear 232 is respectively meshed and connected with the two racks 231.

[0050] The synchronous drive unit 23 in this embodiment includes a rack 231 arranged on two connecting seats 21 and a gear 232 rotatably installed on the top of the distribution cabinet. The rack 231 and the gear 232 are meshed and connected, so that when the connecting seat 21 on one side moves, the gear 232 is driven to rotate by the rack 231, thereby driving the connecting seat 21 on the other side to move in the opposite direction synchronously.

[0051] In order to solve the problem of how to realize the automatic closing of the protective folding door 1 after the locking unit 3 releases the lock on the connecting seat 21, the following features are specifically set:

[0052] The connecting seat 21 is provided with a first guide rod 215 extending along the length direction of the insulating limit strip 22. The first guide rod 215 is inserted into a guide sleeve 221 installed at the outward end of the insulating limit strip 22. A second spring 216 is sleeved on the first guide rod 215. The second spring 216 applies an elastic force to move the connecting seat 21 toward the end of the insulating limit strip 22 away from the guide sleeve 221.

[0053] In this embodiment, a first guide rod 215 is further provided on the connecting seat 21. The first guide rod 215 extends along the moving path direction of the connecting seat 21 and is inserted into a guide sleeve 221 provided on the insulating limit strip 22. When the connecting seat 21 moves along the insulating limit strip 22 and approaches the fixed seat 31, the movement of the connecting seat 21 compresses the second spring 216 provided on the first guide rod 215. When the locking unit 3 releases the position lock of the connecting seat 21, the elastic force of the second spring 216 causes the connecting seat 21 to move in the reset direction and drive the protective folding door 1 to close.

[0054] In order to solve the problem of how to realize the first movable page 11 and the second movable page 12 in a flush state to be folded outward when the traction unit 2 moves, the following features are specifically set:

[0055] The slide rail 13 is provided with a through hole 132, and the first piston cylinder 14 is installed at the through hole 132. The first piston rod 141 is slidably installed in the first piston cylinder 14, and the first piston rod 141 passes through the through hole 132 and protrudes from the surface of the slide rail 13; the first piston cylinder 14 is connected to the second piston cylinder 16 through a pipeline 15, and the first piston cylinder 14, the pipeline 15 and the second piston cylinder 16 are filled with hydraulic oil; the second piston rod 161 is slidably installed in the second piston cylinder 16, and the second piston rod 161 passes through the distribution cabinet and protrudes from the upper surface of the distribution cabinet. The position of the second piston rod 161 is located below the connecting seat 21 when the first movable page 11 and the second movable page 12 are horizontal.

[0056] The first piston cylinder 14 is further provided with a piston sheet 142 , and the piston sheet 142 is elastically connected to the first piston rod 141 via a first spring 143 .

[0057] In this embodiment, a first piston cylinder 14 is installed on the slide rail 13, and a first piston rod 141 inserted in the first piston cylinder 14 passes through a through hole 132 on the slide rail 13 and protrudes from the surface of the slide rail 13. When the protective folding door 1 is closed, the first movable leaf 11 and the second movable leaf 12 fit the slide rail 13, and the second movable leaf 12 compresses the first piston rod 141 into the first piston cylinder 14. Since the first piston cylinder 14 is connected to the second piston cylinder 16 through the pipeline 15, the pressure generated by the first piston rod 141 entering the first piston cylinder 14 pushes the second piston rod 161 to move upward and protrude from the second piston cylinder 16. Since the position of the second piston rod 161 is below the connecting seat 21 when the first movable leaf 11 and the second movable leaf 12 are horizontal, the second piston rod 161 is pressed by the connecting seat 21, and the pressure in the second piston cylinder 16 is applied to the piston plate 142 in the first piston cylinder 14, and the piston plate 142 compresses the first spring 143. When the staff holds the insulating handle 212 to move the connecting seat 21, the connecting seat 21 moves to a certain position. When the second movable leaf 12 is at a distance, the second piston rod 161 is still pressed. At this time, the movement of the second movable leaf 12 is affected by the pressure of the first spring 143 on the first piston rod 141, and it is always flipped outward to facilitate the opening and closing of the protective folding door 1. When the second hinged seat 121 connected to the second movable leaf 12 passes the slide rail 13, the first piston rod 141 is pressed into the first piston cylinder 14 again. The pressure of the first piston cylinder 14 pushes the second piston rod 161 to protrude from the second piston cylinder 16. At this time, the connecting seat 21 is away from the upper side of the second piston cylinder 16, and the second piston rod 161 protrudes from the surface of the distribution cabinet. After the subsequent connection seat 21 is reset, the elastic force of the first piston rod 141 on the second movable leaf 12 is applied again. In this embodiment, when the connecting seat 21 moves to the position where the protective folding door 1 closes the distribution cabinet door, the position of the connecting seat 21 can be fixed by other locks or buckles, or by setting a card hole at the bottom of the connecting seat 21 to cooperate with the second piston rod 161 to position the connecting seat 21. There are many schemes that can be realized, which will not be described in detail here.

[0058] Working principle: in the non-working state, the first movable leaf 11 and the second movable leaf 12 of the protective folding door 1 block the distribution cabinet door. When the distribution cabinet needs to be repaired, the staff holds the insulating handle 212 of the connecting seat 21 to pull the second movable leaf 12 to flip to both sides, and the connecting seat 21 moves along the insulating limit strip 22 toward the fixed seat 31 of the locking unit 3. The block 213 on one side of the insulating handle 212 is engaged with the tooth 321 on the movable plate 32 in the fixed seat 31 to lock the position of the connecting seat 21, and locks the position of the first movable leaf 11 and the second movable leaf 12. When the distribution cabinet door needs to be blocked, the staff presses the contact plate 334 of the locking unit 3, and the contact plate 334 drives the slot 311 to move downward to make the movable plate 32 away from the block 213. The block 213 disengages from the tooth 321 and then moves to reset.

[0059] The above embodiments only express one or several implementation modes of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present invention. It should be pointed out that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention patent shall be subject to the attached claims.

Claims

1. An insulating tool for preventing a power distribution cabinet door from closing, comprising a protective folding door (1) installed at the power distribution cabinet door, a traction unit (2) for driving the protective folding door (1) to open, and a locking unit (3) for locking the protective folding door (1) in an open state, characterized in that: The protective folding door (1) comprises two groups of hingedly connected first movable leaves (11) and second movable leaves (12), one end of each group of first movable leaves (11) is rotatably mounted on one side of the cabinet door, one end of the second movable leaf (12) away from the hinge of the first movable leaf (11) is connected to a connecting seat (21) of a traction unit (2), the connecting seat (21) is slidably mounted in an insulating limit strip (22) arranged on the top of the power distribution cabinet, and the connecting seat (21) connected to each group of second movable leaves (12) is synchronously moved in the opposite direction through a synchronous drive unit (23); One of the connection seats (21) is connected to a mounting block (211), and the mounting block (211) is provided with an insulating handle (212) extending vertically up and down; A protruding clamping block (213) is provided on one side of the mounting block (211); The locking unit (3) comprises a fixing seat (31) arranged at one end of the insulating limit strip (22); a slot (311) extending along the length direction of the insulating limit strip (22) is arranged on the fixing seat (31); a movable plate (32) is slidably mounted in the slot (311); the movable plate (32) moves in a horizontal direction perpendicular to the length direction of the slot (311); a plurality of latch teeth (321) are arranged on the surface of the movable plate (32); the latch teeth (321) are distributed at equal intervals along the length direction of the movable plate (32); and a latch block (213) of the connecting seat (21) is latched at the latch teeth (321) to lock the connecting seat (21).

2. The anti-closing insulating tool for a power distribution cabinet door according to claim 1, characterized in that: A plurality of second guide rods (322) are arranged on one side of the movable plate (32) away from the latching teeth (321), the length direction of the second guide rods (322) is perpendicular to the length direction of the fixing seat (31), and the second guide rods (322) are inserted into the fixing seat (31); A third spring (323) is sleeved on the second guide rod (322), the third spring (323) elastically connects the fixed seat (31) and the movable plate (32), and the third spring (323) applies elastic force to move the movable plate (32) toward the opening of the slot (311); A first inclined surface (214) is provided on one side of the clamping block (213) facing the clamping tooth (321), and the first inclined surface (214) is in contact with the clamping tooth (321) to move and compress the third spring (323).

3. The anti-closing insulating tool for a power distribution cabinet door according to claim 2, characterized in that: The upper and lower sides of the slot (311) are provided with blocking bars (312) extending along the length direction of the slot (311), and the movable plate (32) is attached to the blocking bars (312) to limit movement; The gap between the blocking bars (312) is not less than the width of the clamping block (213) and the clamping teeth (321).

4. The anti-closing insulating tool for a power distribution cabinet door according to claim 3, characterized in that: One end of the second guide rod (322) is connected to a limiting plate (324), and the limiting plate (324) is parallel to the fixing seat (31); A mounting bracket (33) is fixedly mounted on the fixing seat (31), and a pressing block (331) movable in a vertical direction is arranged on the mounting bracket (33), and the bottom end of the pressing block (331) is inserted between the fixing seat (31) and the limiting plate (324), and an inclined second inclined surface (332) is arranged at the bottom of the pressing block (331), and the second inclined surface (332) enables the pressing block (331) to have a width that gradually increases from bottom to top; when the pressing block (331) moves downward, the second inclined surface (332) contacts the limiting plate (324) to push the limiting plate (324) to move to a side away from the clamping block (213).

5. The anti-closing insulating tool for a power distribution cabinet door according to claim 4, characterized in that: A vertical third guide rod (333) is arranged on the upper side of the pressing block (331), the third guide rod (333) is inserted into the mounting bracket (33), and the top end of the third guide rod (333) is connected to a horizontal contact plate (334); A fourth spring (335) is sleeved on the third guide rod (333), the fourth spring (335) elastically connects the mounting bracket (33) and the contact plate (334), and the fourth spring (335) applies an upward elastic force to the contact plate (334).

6. The anti-closing insulating tool for a power distribution cabinet door according to claim 5, characterized in that: The first movable page (11) has upper and lower ends on a side away from the second movable page (12) hingedly mounted with a first hinge seat (111), and the second movable page (12) has upper and lower ends on a side away from the first movable page (11) hingedly mounted with a second hinge seat (121); Slide rails (13) are arranged at the upper and lower ends of the first movable page (11) and the second movable page (12); the slide rails (13) are installed on the door of the power distribution cabinet; the first hinge seat (111) is fixedly installed on both sides of the first hinge seat (111); waist-shaped holes (131) penetrating the slide rails (13) and the power distribution cabinet are arranged on the upper and lower sides of the slide rails (13); the waist-shaped holes (131) extend along the length direction of the insulating limit strip (22); vertical extension rods (122) are arranged on the upper and lower sides of the second hinge seat (121); the second hinge seat (121) is slidably installed in the waist-shaped holes (131) through the extension rods (122); The extension rod (122) passes through the waist-shaped hole (131) and is inserted into the connection seat (21) on the top of the power distribution cabinet.

7. The anti-closing insulating tool for a power distribution cabinet door according to claim 6, characterized in that: The synchronous drive unit (23) comprises a rack (231) mounted on the connection seat (21), the rack (231) extending along the length direction of the insulating limit strip (22), and the racks (231) on the two connection seats (21) are arranged opposite to each other; The synchronous drive unit (23) also includes a gear (232) rotatably mounted on the power distribution cabinet, and the gear (232) is meshedly connected with the two racks (231) respectively.

8. The insulating tool for preventing the door of a power distribution cabinet from closing according to claim 5, characterized in that: The connecting seat (21) is provided with a first guide rod (215) extending along the length direction of the insulating limit strip (22); the first guide rod (215) is inserted into a guide sleeve (221) installed at one end of the insulating limit strip (22) facing outward; a second spring (216) is sleeved on the first guide rod (215); the second spring (216) applies elastic force to move the connecting seat (21) toward one end of the insulating limit strip (22) away from the guide sleeve (221).

9. The insulating tool for preventing the door of a power distribution cabinet from closing according to claim 5, characterized in that: The slide rail (13) is provided with a through hole (132), a first piston cylinder (14) is installed at the through hole (132), a first piston rod (141) is slidably installed in the first piston cylinder (14), and the first piston rod (141) passes through the through hole (132) and protrudes from the surface of the slide rail (13); The first piston cylinder (14) is connected to the second piston cylinder (16) via a pipeline (15), and the first piston cylinder (14), the pipeline (15) and the second piston cylinder (16) are filled with hydraulic oil; A second piston rod (161) is slidably installed in the second piston cylinder (16). The second piston rod (161) passes through the distribution cabinet and protrudes from the upper surface of the distribution cabinet. The second piston rod (161) is located below the connecting seat (21) when the first movable leaf (11) and the second movable leaf (12) are horizontal.

10. The insulating tool for preventing the door of a power distribution cabinet from closing according to claim 9, characterized in that: The first piston cylinder (14) is also provided with a piston sheet (142), and the piston sheet (142) is elastically connected to the first piston rod (141) via a first spring (143).

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