CN210016167U

CN210016167U - Special chassis car of cubical switchboard

Info

Publication number: CN210016167U
Application number: CN201921174622.0U
Authority: CN
Inventors: 郑瑞象
Original assignee: ZHEJIANG SHUNHAO ELECTRICAL APPLIANCES CO Ltd
Current assignee: ZHEJIANG SHUNHAO ELECTRICAL APPLIANCES CO Ltd
Priority date: 2019-07-24
Filing date: 2019-07-24
Publication date: 2020-02-04
Anticipated expiration: 2029-07-24

Abstract

The utility model relates to a special chassis car of cubical switchboard, including the frame that slides, fixed stop, the lead screw, nut and rotation handle, the lead screw rotates and sets up in fixed stop, nut threaded connection is in the lead screw, and with the frame fixed connection that slides, lead screw axial one end is provided with square jack, it is provided with square inserted block to rotate the handle, the last locking mechanical system that is provided with of fixed stop, locking mechanical system includes the locking picture peg, the drive lock body and open and close the key, the locking picture peg slides and sets up in fixed stop, the locking picture peg is provided with spacing flank, the lead screw periphery is provided with square fixture block, the drive lock body is fixed to be set up in fixed stop, and be provided with key slot and propelling movement pole on the drive lock body, propelling movement pole and locking. By adopting the scheme, the special chassis vehicle for the switch cabinet is provided, wherein the limit of the lead screw is firstly contacted by the opening and closing key, and then the special chassis vehicle for the switch cabinet can be driven only by confirming that the rotating handle is inserted into the connecting lead screw.

Description

Special chassis car of cubical switchboard

Technical Field

The utility model relates to a high-voltage connection drive device, concretely relates to special chassis car of cubical switchboard.

Background

The chassis is a device for mechanically controlling the connection and disconnection of electrical contacts (such as high-voltage fuses) and is often applied to switch cabinets.

The chassis car that has now is including the frame that slides, fixed stop, the lead screw, nut and rotation handle, the frame that slides in the cubical switchboard, the electrical contact that required control is connected is placed on the frame that slides, and switch on and break off with the electrical contact that corresponds along with the frame sliding direction that slides, fixed stop is fixed to be set up in the cubical switchboard, the axial of lead screw is the same with the sliding direction of the frame that slides, and rotate and set up in the frame that slides, nut fixed connection is in the frame that slides, and rotate and set up in the lead screw periphery, rotate the handle and be connected with lead screw axial one end, and can realize the circumferential direction to the lead screw.

Therefore, under the rotation of the rotating handle, the screw rod can rotate to drive the nut to slide back and forth along the axial direction, so that the sliding frame is driven to move to realize opposite conduction and deviation disconnection of the electric contacts.

Because the chassis car uses the occasion mostly is high-pressure high-risk occasion, if the manual work has carried out the maloperation and has opened under the unsafe condition of circuit arrangement, will appear phenomenons such as short circuit and lead to the circuit damage even cause the disaster.

Therefore, the misoperation prevention capacity of the existing chassis vehicle is too weak, the industrial safety coefficient is too low, and danger is easy to occur.

Disclosure of Invention

Not enough to prior art exists, the utility model aims to provide a need earlier through the spacing of opening and close key contact lead screw, then still need confirm will rotate the handle and insert and establish a special chassis car of cubical switchboard that the connection lead screw just can carry out the driven.

In order to achieve the above purpose, the utility model provides a following technical scheme: the sliding lock comprises a sliding frame, a fixed baffle, a screw rod, a nut and a rotating handle, wherein the screw rod is rotatably arranged on the fixed baffle, the nut is in threaded connection with the periphery of the screw rod and is fixedly connected with the sliding frame, one end of the screw rod, which is positioned in the axial direction, is provided with a square jack used for being connected with the rotating handle, the rotating handle is provided with a square insert block matched with the square jack in shape and size, the fixed baffle is provided with a locking mechanism for limiting the circumferential rotation of the screw rod, the locking mechanism comprises a locking insert plate, a driving lock body and an opening and closing key, the locking insert plate is arranged on the fixed baffle in a sliding manner along the radial direction of the screw rod, the locking insert plate is positioned on two sides of the vertical axial direction of the screw rod and the sliding direction of the vertical locking insert plate and is, and a rotating key slot and a pushing rod which is rotated by the key slot and slides along the sliding direction of the locking plugboard are arranged on the driving lock body, the pushing rod is fixedly connected with the locking plugboard, and the opening and closing key is arranged corresponding to the key slot.

By adopting the technical scheme, 1, the rotating handle is fixedly connected with the square jack through the square insertion block, so that if the screw rod needs to rotate, a user inserts the rotating handle into the screw rod for working after confirming, and accidents caused by circuit conduction due to the fact that the user rotates the handle without confirmation or unconsciously are prevented; 2. the arrangement of the locking mechanism further realizes the limiting of the screw rod, so that if the screw rod needs to rotate, the pushing rod drives the locking plugboard to remove the limiting of the limiting flank on the square fixture block by opening and closing the key to rotate the key slot, so that the screw rod can rotate relative to the fixed baffle, after the adjustment is finished, the limiting flank restricts the square fixture block again by rotating the opening and closing key, so that the screw rod cannot rotate, and the second mechanical misoperation prevention setting is realized by limiting the screw rod or not; 3. the key groove is matched with the opening and closing key, so that the opening and closing key can be pulled out after the key groove is used, and if the screw rod needs to rotate, a user inserts the opening and closing key into the key groove to work after the screw rod is determined, so that the condition that the user removes the limit of the screw rod by using the opening and closing key without confirmation and in an unintentional condition and the subsequent series of misoperation cause the conduction of a circuit to cause an accident is prevented; 4. in sum, triple anti-misoperation arrangements are arranged, so that an operator can complete starting operation only after three times of confirmation, and the safety performance of the whole equipment is higher.

The utility model discloses further set up to: the key slot is provided with a first state position and a second state position, when the key slot is in the first state position, the square clamping block is inserted between the limiting side wings, the opening and closing key is arranged in the key slot in a sliding mode, when the key slot is in the second state position, the square clamping block and the limiting side wings are arranged in a separated mode, and the opening and closing key is fixedly arranged in the key slot.

By adopting the technical scheme, the screw rod of the key groove is in the limiting state when in the first state position, so that the screw rod can always be in the limiting state and can not work when the key groove is pulled out to open and close the key, the safety performance is high, the screw rod can rotate under the action of the rotating handle when the key groove is in the second state position, the warning effect of 'the screw rod can be moved' can not be achieved when the key groove is opened and closed, and the screw rod can be more conveniently limited subsequently.

The utility model discloses further set up to: the fixed baffle is positioned on the side of the locking plugboard facing the screw rod, a locking pin shaft and a locking spring are arranged, the axial direction of the locking pin shaft is parallel to the axial direction of the screw rod, one end of the axial direction is positioned on the side of the fixed baffle facing the locking plugboard, the other end of the axial direction penetrates and slides on the fixed baffle towards the direction of the sliding frame, the side of the locking plugboard facing the lock pin shaft is provided with a sliding groove matched with the size of the locking pin shaft along the sliding direction of the locking plugboard, the end of the locking pin shaft, which is positioned axially away from the sliding frame, is provided with a limiting block for limiting the locking plugboard to move towards the screw rod, the locking spring is in a compressed state, one end of the locking spring is fixedly connected with the locking pin shaft, the other end of the locking spring is fixedly connected with the fixed baffle, the, the limiting block is separated from the sliding track of the locking plugboard, the sliding frame is separated from the lock pin shaft, and the limiting block is located on the sliding track of the locking plugboard.

By adopting the technical scheme, when the sliding frame and the fixed baffle are mutually attached, the chassis is in an initial state, the gap between the electric contacts is the largest, when the sliding frame is far away from the fixed baffle to the electric contact is in a working state, and when the sliding frame is far away from the fixed baffle to the electric contact, the sliding frame is in a working state relative to the fixed baffle, the displacement of the sliding frame relative to the fixed baffle is the largest, in order to ensure the safety to the maximum extent, whether the work is started in the initial state is confirmed each time, the limiting block on the lock pin shaft is provided with the locking spring, when the sliding frame is far away from the fixed baffle, the sliding frame and the fixed baffle are mutually separated, when the sliding frame is in a non-initial state, the fixed baffle cannot be inserted with the fixed square clamping block and cannot enable the opening and closing key to be reset to the first state position, therefore the sliding frame cannot be pulled out, the warning effect is achieved, and when, therefore, the limiting block cannot limit the locking plugboard, the locking plugboard can slide, the opening and closing key can be rotated to the first state position and pulled out, the initial position is guaranteed as long as the opening and closing key is inserted in the initial state, and the misoperation rate is reduced.

The utility model discloses further set up to: the fixed baffle is provided with at least one guide rod towards the side of the sliding frame, the axial direction of each guide rod is the same as that of the screw rod, and the sliding frame is provided with guide holes matched with the guide rods in shape and size respectively corresponding to the guide rods.

By adopting the technical scheme, 1, the single screw rod guide easily generates torque on the sliding frame, and at the moment, if the center of gravity of an electrical contact assembly placed on the sliding frame deviates, the sliding frame is turned over; 2. the setting of many guide bars makes different guide bars combined action carry out the moment of torsion and offset, increases overall structure's intensity and stability.

The utility model discloses further set up to: the number of the guide rods is two, and the guide rods are symmetrically arranged on two sides of the screw rod respectively.

Through adopting above-mentioned technical scheme, the effectual cooperation of guide bar that two symmetries set up the lead screw offsets the moment of torsion that comes from the frame that slides for the lead screw mainly plays the drive effect and need not to bear the moment of torsion that comes from the frame that slides, thereby makes the drive of lead screw more stable.

The utility model discloses further set up to: the fixed baffle is provided with a lubricant injection hole corresponding to each guide rod, a conveying hole communicated with the corresponding lubricant injection hole is arranged in each guide rod, and a plurality of output holes are formed in the circumferential direction of the guide rod on the side, away from the fixed baffle, of each conveying hole.

By adopting the technical scheme, 1, the lubricant injection hole on the fixed baffle is matched with the conveying hole to convey the lubricant to the output hole to lubricate the outer periphery of the guide rod and the inner peripheral surface of the guide hole, so that the guide rod can slide more smoothly; 2. the output hole is arranged on the side of the guide rod, which is far away from the fixed baffle plate, so that the position is the position which is separated from the guide rod finally, and the lubricant output at the position can be matched with the sliding to finish filling the lubricant on the outer peripheral surface of the integral guide rod and the inner peripheral surface of the guide hole, and the lubricant can be completely filled in the guide rod to achieve the maximum utilization.

The utility model discloses further set up to: each guiding hole is located and runs through the frame that slides on the axial deviates from fixed baffle side and is provided with the constant voltage opening, each guiding hole is located and is provided with the filter screen that prevents the dust entering guiding hole in the side of the constant voltage opening that corresponds.

By adopting the technical scheme, 1, the arrangement of the constant-pressure opening ensures that the guide rod cannot slide unsmoothly due to pressure intensity in the front and back sliding process; 2. the setting of filter screen then prevents that dust or big solid particle from getting into the guiding hole through the constant voltage opening, prevents to make inside dust pile up and lead to the smooth and easy not of sliding of guide bar.

The invention is further described with reference to the accompanying drawings and the detailed description.

Drawings

FIG. 1 is an assembly view of a first state of an embodiment of the present invention;

FIG. 2 is a front view of a first state of an embodiment of the present invention;

FIG. 3 is an enlarged view of a portion of a first state according to an embodiment of the present invention;

FIG. 4 is an enlarged view of a portion of a first state of an embodiment of the present invention;

FIG. 5 is an assembly view of a second state of an embodiment of the present invention;

FIG. 6 is an enlarged view of a portion of a third state of the embodiment of the present invention;

FIG. 7 is an enlarged view of a portion of a third state of the embodiment of the present invention;

FIG. 8 is an enlarged view of A in FIG. 5;

FIG. 9 is an enlarged view of B in FIG. 5;

FIG. 10 is an enlarged view of C in FIG. 5;

fig. 11 is an enlarged view of D in fig. 5.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings.

As shown in fig. 1-2, the utility model discloses a special chassis car of cubical switchboard, including being square frame 1 that slides, be rectangular square fixed stop 2, lead screw 3, nut 4 and be the rotation handle 5 of zigzag, wherein, fixed stop 2 places in the front side, and length direction is the left and right sides, lead screw 3 runs through fixed stop 2 backward along the axial from 2 length intermediate positions of fixed stop, and run through the position and lead screw 3's peripheral shape big or small looks adaptation, thereby lead screw 3 can be followed circumferential direction and rotated in fixed stop 2, in addition, 4 threaded connection of nut is in the 3 peripheries of lead screw, and through welded mode with frame 1 fixed connection that slides.

In addition, as shown in fig. 3 to 5, a square insertion hole 31 is formed at one end of the screw rod 3 in the axial direction, and correspondingly, a square insertion block 51 matched with the square insertion hole 31 in shape and size is arranged on the rotating handle 5, so that the rotating handle 5 is inserted into the square insertion hole 31 through the square insertion block 51 to be fixed, and the rotating handle 5 rotates to realize the rotation of the screw rod 3, so that the sliding frame 1 slides around the screw rod 3 under the action of the nut 4.

In addition, as shown in fig. 3-4 and 6-7, the front side of the fixing baffle 2 in this embodiment is fixedly connected with a strip-shaped mounting head 21 through screws, and the length direction of the mounting head 21 is the same as the length direction of the fixing baffle 2, an inner cavity 211 with a square cross section is hollowed in the mounting head 21 along the length direction, a locking mechanism 6 for limiting the circumferential rotation of the screw rod 3 is arranged in the inner cavity 211, wherein the locking mechanism 6 comprises a locking insertion plate 61, a driving lock body 62 and an opening and closing key 63, the locking insertion plate 61 abuts against the rear side of the inner cavity 211 and slides towards the screw rod 3 or away from the screw rod 3 along the length direction of the mounting head 21, in addition, the locking insertion plate 61 is integrally formed with plate-shaped limiting side wings 611 at the upper side and the lower side, and the limiting side wings 611 abut against the upper plane and the lower plane of the inner cavity 211 respectively, so that, in addition, the screw rod 3 extends into the inner cavity 211 and is integrally provided with a square fixture block 32, and the square fixture block 32 is square towards the axial direction, and the side length of the square is the same as the distance between the two limit side wings 611, so that when the limit side wings 611 are slidably clamped in the square clamping blocks 32, the screw rod 3 can not rotate, after the limiting side wing 611 exits the square clamping block 32, the screw rod 3 can rotate relatively, in addition, the driving lock body 62 is fixed in the inner cavity 211 through a screw or the like, and the driving lock body 62 is provided with a rotating key slot 621 and a pushing rod 622 which is rotated by the key slot 621 and slides along the sliding direction of the locking flashboard 61, the pushing rod 622 and the locking flashboard 61 are fixedly connected by rivets and the like, and the key 63 is disposed corresponding to the key slot 621, so that the key 63 can be inserted into the key slot 621 to rotate, thereby driving the pushing rod 622 to move back and forth to drive the locking insertion plate 61 to fix the screw rod 3 or release the fixation.

The technical principle of the driving lock body 62 with the pushing rod 622 is that of the existing lock, and is a direct reference of the existing technology, and no excessive explanation is made here, and the existing lock capable of achieving the above function can be directly adopted, or the lock only with the rotating function can be automatically set to achieve the rotating input and sliding output through the worm gear and the worm.

In addition, the key slot 621 in this embodiment is provided with a first status position 6211 (fig. 4) that cannot rotate counterclockwise and a second status position 6212 (fig. 7) that cannot rotate clockwise, wherein when the key slot 621 is in the first status position 6211, the square fixture block 32 is inserted between the limiting flanks 611, and the on-off key 63 is slidably disposed in the key slot 621, and when the key slot 621 is in the second status position 6212, the square fixture block 32 is separated from the limiting flanks 611, and the on-off key 63 is fixedly disposed in the key slot 621. Therefore, when the opening and closing key 63 is in the extractable state, the screw rod 3 is in the limiting state and cannot work, so that the misoperation is prevented, the safety performance is improved, when the key groove 621 is in the second state 6212, the screw rod 3 can rotate under the action of the rotating handle 5, at the moment, the opening and closing key 63 cannot be extracted, the warning effect that the current state of the screw rod 3 is movable is achieved, and the opening and closing key 63 only needs to be rotated for limiting the screw rod 3 subsequently, so that the opening and closing key is simple and convenient.

Referring to fig. 3-8, in the embodiment, the fixing baffle 2 is located on the locking insertion plate 61 and provided with a locking pin shaft 22 and a locking spring 23 facing the screw rod 3, wherein the locking pin shaft 22 is axially parallel to the screw rod 3, one axial end of the locking pin shaft is located in the inner cavity 211, and the other axial end of the locking pin shaft extends backward through the fixing baffle 2 and faces the outer circumferential surface of the sliding frame 1, wherein the locking pin shaft 22 extends through the fixing baffle 2 and has a shape and size matched with the outer circumferential surface of the locking pin shaft 22, so that the locking pin shaft 22 can slide on the fixing baffle 2 along the axial direction, in addition, the locking insertion plate 61 is provided with a sliding groove 612 matched with the size of the locking pin shaft 22 along the sliding direction of the locking insertion plate 61, so that the locking insertion plate 61 cannot slide due to the blocking of the locking pin shaft 22 in the sliding process, the locking pin shaft 22 is separated from the, in addition, the lock pin shaft 22 is integrally formed with a stopper 221 having a radius larger than that of the lock pin shaft 22 at the axial front end, and correspondingly, the lock spring 23 is in a compressed state, and the rear end is abutted against the lock pin shaft 22, and the front end is abutted against the fixed baffle 2, so that the reset direction of the locking spring 23 is the same as the backward sliding direction of the lock pin rod, therefore, the length of the lock pin shaft 22 can be realized, when the sliding frame 1 abuts against the fixed baffle 2, the sliding frame 1 abuts against the lock pin shaft 22, and the limited block 221 is jacked forward to be separated from the sliding track of the locking inserting plate 61, at this time, the locking inserting plate 61 cannot be limited by the lock pin shaft 22 under the action of the sliding groove 612, so that the locking inserting plate rotates freely, when the sliding frame 1 is separated from the lock pin shaft 22 or even just separated from the fixed baffle 2, the limiting block 221 is wholly or partially positioned on the sliding track of the locking inserting plate 61, so that the locking baffle cannot pass through the limiting block 221 through the sliding groove 612 and cannot lock the screw rod 3. Therefore, the key can be pulled out only in the initial state when the fixed baffle 2 abuts against the sliding frame 1, and the other states cannot be pulled out, so that the effectiveness of safety protection is further improved.

As shown in fig. 5 and 9-11, in the present embodiment, at least one guide rod 7 is disposed on the fixed baffle 2 toward the side of the sliding frame 1, an axial direction of each guide rod 7 is the same as an axial direction of the screw rod 3, one end of the fixed baffle 2 axially facing the fixed baffle is connected to the fixed baffle 2 through a thread, and the other end of the fixed baffle penetrates toward the sliding frame 1, so that the sliding frame 1 is correspondingly provided with a guide hole 11 corresponding to each guide rod 7 and adapted to the shape and size of the guide rod 7. Therefore, the guide rod 7 is arranged to guide together with the screw rod 3, the guide rod and the screw rod 3 are staggered, the sliding frame 1 can effectively act, the torque caused by the screw rod 3 on the sliding frame 1 is offset, the sliding frame 1 slides smoothly, the guide rod 7 is more in number and the bearing capacity is stronger, and the strength is enhanced.

Preferably, the number of the guide rods 7 in the present embodiment is two, and the two guide rods are respectively symmetrically arranged on the upper side and the lower side or the left side and the right side of the screw rod 3, preferably the left side and the right side. Therefore, the two guide rods 7 arranged symmetrically to the screw rod 3 effectively cooperate to offset the torque from the sliding frame 1, so that the screw rod 3 mainly plays a driving role without bearing the torque from the sliding frame 1, and the driving of the screw rod 3 is more stable.

In addition, in the embodiment, the lubricant injection holes 24 are formed in the upper portion of the fixed baffle 2 and face downward corresponding to the guide rods 7, correspondingly, conveying holes 71 communicated with the corresponding lubricant injection holes 24 are formed in the guide rods 7, each conveying hole 71 extends axially and backwards corresponding to the corresponding guide rod 7, an output hole 72 is formed in the guide rod 7 and penetrates through the guide rod 7 radially and outwards at the side, away from the fixed baffle 2, of the guide rod 7, one guide rod 7 corresponds to four output holes 72, and the four output holes 72 are arranged on the guide rod 7 at equal intervals in the circumferential direction. Therefore, the lubricant can be injected through the lubricant injection hole 24 to lubricate the outer circumferential surface of the guide rod 7 and the inner circumferential surface of the guide hole 11, and the lubricant utilization rate is high.

Preferably, each guide hole 11 in the present embodiment is provided with a constant pressure opening 111 through the slipping frame 1 on the side axially away from the fixed baffle 2. Therefore, the guide rod 7 can not slide unsmoothly due to pressure in the process of sliding back and forth.

In addition, the filter 12 is disposed on the side of each guide hole 11 corresponding to the constant pressure opening 111 in the present embodiment to prevent dust from entering the guide hole 11, and the cover plate 13 is used to fix the filter 12 with a bolt. Therefore, dust or large solid particles are prevented from entering the guide hole 11 through the constant pressure opening 111, and the internal dust is prevented from being accumulated to cause the unsmooth sliding of the guide rod 7.

Claims

1. The utility model provides a special chassis car of cubical switchboard, is including frame, fixed stop, lead screw, nut and the rotation handle of sliding, the lead screw rotates and sets up in fixed stop, nut threaded connection is in the lead screw periphery, and with frame fixed connection that slides, its characterized in that: one end of the screw rod in the axial direction is provided with a square jack which is used for being connected with a rotating handle, the rotating handle is provided with a square insert block which is matched with the square jack in shape and size, the fixed baffle is provided with a locking mechanism for limiting the circumferential rotation of the screw rod, the locking mechanism comprises a locking inserting plate, a driving lock body and an opening and closing key, the locking plugboard is arranged on the fixed baffle in a sliding manner along the radial direction of the screw rod, the locking plugboard is arranged on two sides of the vertical screw rod in the axial direction and the sliding direction of the vertical locking plugboard and is provided with a limit flank, the periphery of the screw rod is provided with a square clamping block clamped between the limiting side wings, the driving lock body is fixedly arranged on the fixed baffle plate, and the driving lock body is provided with a rotating key slot and a push rod which slides along the sliding direction of the locking flashboard under the rotation of the key slot, the push rod is fixedly connected with the locking plugboard, and the opening and closing key is arranged corresponding to the key slot.

2. The special chassis vehicle for the switch cabinet according to claim 1, wherein: the key slot is provided with a first state position and a second state position, when the key slot is in the first state position, the square clamping block is inserted between the limiting side wings, the opening and closing key is arranged in the key slot in a sliding mode, when the key slot is in the second state position, the square clamping block and the limiting side wings are arranged in a separated mode, and the opening and closing key is fixedly arranged in the key slot.

3. The special chassis vehicle for the switch cabinet as claimed in claim 2, wherein: the fixed baffle is positioned on the side of the locking plugboard facing the screw rod, a locking pin shaft and a locking spring are arranged, the axial direction of the locking pin shaft is parallel to the axial direction of the screw rod, one end of the axial direction is positioned on the side of the fixed baffle facing the locking plugboard, the other end of the axial direction penetrates and slides on the fixed baffle towards the direction of the sliding frame, the side of the locking plugboard facing the lock pin shaft is provided with a sliding groove matched with the size of the locking pin shaft along the sliding direction of the locking plugboard, the end of the locking pin shaft, which is positioned axially away from the sliding frame, is provided with a limiting block for limiting the locking plugboard to move towards the screw rod, the locking spring is in a compressed state, one end of the locking spring is fixedly connected with the locking pin shaft, the other end of the locking spring is fixedly connected with the fixed baffle, the, the limiting block is separated from the sliding track of the locking plugboard, the sliding frame is separated from the lock pin shaft, and the limiting block is located on the sliding track of the locking plugboard.

4. The special chassis vehicle for the switch cabinet according to claim 1, wherein: the fixed baffle is provided with at least one guide rod towards the side of the sliding frame, the axial direction of each guide rod is the same as that of the screw rod, and the sliding frame is provided with guide holes matched with the guide rods in shape and size respectively corresponding to the guide rods.

5. The special chassis vehicle for the switch cabinet as claimed in claim 4, wherein: the number of the guide rods is two, and the guide rods are symmetrically arranged on two sides of the screw rod respectively.

6. The special chassis vehicle for the switch cabinet as claimed in claim 4, wherein: the fixed baffle is provided with a lubricant injection hole corresponding to each guide rod, a conveying hole communicated with the corresponding lubricant injection hole is arranged in each guide rod, and a plurality of output holes are formed in the circumferential direction of the guide rod on the side, away from the fixed baffle, of each conveying hole.

7. The special chassis vehicle for the switch cabinet as claimed in claim 4, wherein: each guiding hole is located and runs through the frame that slides on the axial deviates from fixed baffle side and is provided with the constant voltage opening, each guiding hole is located and is provided with the filter screen that prevents the dust entering guiding hole in the side of the constant voltage opening that corresponds.