CN214379699U - Direct current breaker trolley - Google Patents

Abstract

The utility model relates to a DC breaker trolley, which comprises a trolley body, an operation panel, a guide rail component and a driving device; the vehicle body comprises a frame and a front end plate arranged at the front end of the frame; the operation panel is movably arranged on the front side of the front end plate and is opposite to the front end plate; the guide rail assembly comprises a fixed rail and a connecting rod piece, the fixed rail is fixedly arranged on the frame, the fixed rail is perpendicular to the front end plate, one end of the connecting rod piece is fixedly arranged on the operation panel, and the other end of the connecting rod piece is movably inserted into the front end plate and is matched with the fixed rail; the driving device is used for driving the operation panel to be close to or far away from the front end plate along the fixed rail, and the fixed rail and the connecting rod piece directly slide with each other by the arrangement of the guide rail assembly when the driving device drives the operation panel to be close to or far away from the front end plate, so that the supporting surface is increased, and the problem that the operation panel falls down due to insufficient supporting is effectively prevented.

Description

Direct current breaker trolley

Technical Field

The utility model relates to a handcart-type cubical switchboard technical field especially relates to a direct current circuit breaker dolly.

Background

The handcart type switch cabinet is characterized in that main electrical components (such as a circuit breaker) in the switch cabinet are arranged on an operation panel of a withdrawable handcart, namely the handcart cabinet.

The operation panel of the prior handcart cabinet is guided by 2 pieces with certain diameter (generally being

) The cylindrical shaft is matched with the base bearing and is connected with the trolley body. Because the contact surface of axle and bearing is less, bearing capacity is little, and operating panel can appear obviously rocking about when the dolly body advances out, poor stability. When the operation panel is positioned outside the trolley, the operation panel can fall due to lack of sufficient support, and the debugging accuracy of the mechanism and the sensing element is affected.

SUMMERY OF THE UTILITY MODEL

In view of the above, there is a need for a dc breaker trolley, which is used to solve the technical problems of poor stability of the operation panel and insufficient support between the trolley in the prior art.

The utility model provides a DC breaker trolley, which comprises a trolley body, an operation panel, a guide rail component and a driving device;

the vehicle body comprises a frame and a front end plate arranged at the front end of the frame;

the operation panel is movably arranged on the front side of the front end plate and is opposite to the front end plate;

the guide rail assembly comprises a fixed rail and a connecting rod piece, the fixed rail is fixedly arranged on the frame and is perpendicular to the front end plate, one end of the connecting rod piece is fixedly arranged on the operation panel, and the other end of the connecting rod piece is movably inserted into the front end plate and is matched with the fixed rail;

the driving device is used for driving the operation panel to be close to or far away from the front end plate along the fixed rail.

Furthermore, the driving device comprises a screw rod sleeve, a screw rod, a clutch mechanism and a driving shaft, the screw rod sleeve is fixedly installed on the frame, the screw rod is movably connected with the screw rod sleeve in a threaded manner, a through hole is formed in the position, corresponding to the screw rod, of the front end plate, the driving shaft is rotatably installed on the operating panel, an operating hole is formed in the front end of the operating panel, corresponding to the driving shaft, and the clutch mechanism is installed between the driving shaft and the screw rod and used for separating or combining the driving shaft and the screw rod so as to cut off or transmit power input to the screw rod by the driving shaft.

Further, the clutch mechanism includes a clutch box, an input shaft, an output shaft, a clutch sleeve, a shifting plate and a reset elastic member, the clutch box is fixedly installed at the rear side of the operation panel, the input shaft and the output shaft are respectively rotatably connected to the front end and the rear end of the clutch box, the front end of the input shaft is coaxially connected to the drive shaft in a driving manner, the rear end of the output shaft is coaxially connected to the lead screw in a driving manner, the clutch sleeve is installed on the clutch box in a front-back sliding manner, a first slot is formed at the front end of the clutch sleeve, the rear end of the input shaft is slidably inserted into the first slot, a first driving part for driving the clutch sleeve to synchronously rotate is arranged at the rear end of the input shaft, a second slot is formed at the rear end of the clutch sleeve, and the front end of the output shaft is slidably inserted into the second slot, the front end of the output shaft is provided with a second driving part which is used for synchronously rotating with the clutch sleeve, the shifting sheet is connected with the clutch sleeve and used for driving the clutch sleeve to move forwards or backwards under the action of external force so as to respectively realize the separation or combination of the clutch sleeve and the input shaft or the output shaft, and the reset elastic piece is arranged between the clutch sleeve and the clutch box and used for driving the clutch sleeve to be always positioned at a determined position in the clutch box.

Further, the first driving part is a first columnar protrusion formed on a side surface of the input shaft; the second driving part is a second cylindrical protrusion formed on the side surface of the output shaft; the side wall of the first slot is provided with a first strip-shaped notch matched with the first columnar bulge along the front-back direction; and a second strip-shaped notch matched with the second columnar bulge is formed in the side wall of the second slot along the front-back direction.

Furthermore, a first spiral surface is formed on the front end surface of the clutch sleeve, and two ends of the first spiral surface respectively correspond to the outer ends of two side walls of the first strip-shaped notch; and a second spiral surface is formed on the rear end surface of the clutch sleeve, and two ends of the second spiral surface correspond to the outer ends of two side walls of the second strip-shaped notch respectively.

Further, drive arrangement still includes spacing subassembly, spacing subassembly includes spacing seat, even board, first stopper and second stopper, spacing seat fixed mounting in the frame, screw rod cover fixed mounting in spacing seat, spacing seat with be formed with the clearance between the screw rod cover, even slidable mounting in around the board in the clearance, first stopper with the second stopper is around the interval respectively install in even board, so that even board is in the stroke internal motion that first stopper with the second stopper is injectd, even board is kept away from the one end of spacing seat stretches into from the joint box with plectrum fixed connection.

Furthermore, the elastic reset piece comprises a guide rod, a first reset spring and a second reset spring, the guide rod is installed in the clutch box along the front-back direction, the shifting piece is movably arranged on the guide rod in a penetrating mode, the first reset spring is installed between the front end face of the shifting piece and the front end side wall of the clutch box, and the second reset spring is installed between the rear end face of the shifting piece and the rear end side wall of the clutch box.

Furthermore, a clamping groove is formed in the middle of the outer side wall of the clutch sleeve, and the shifting piece is clamped in the clamping groove.

Furthermore, the vehicle body further comprises a bottom plate arranged at the lower end of the vehicle frame, a top plate arranged at the upper end of the vehicle frame and a support rod vertically arranged on the bottom plate, and the limiting seat is fixedly arranged at the upper end of the support rod.

Further, the operation panel comprises a plate body, a limiting post and a sliding door, a sliding cavity is formed in the plate body, the sliding door is slidably mounted in the sliding cavity, a sliding groove and a shielding hole are formed in the sliding door, the limiting post is rotatably mounted on the plate body, the limiting post is inserted in the sliding groove, the sliding groove comprises a transversely arranged straight section and a limiting section which is formed at one end of the straight section and is larger than the straight section in size, the side wall of the limiting post comprises opposite straight parts and opposite arc parts, the width of the straight parts is smaller than that of the straight section, and the diameter of the arc parts is larger than that of the straight section and smaller than that of the limiting section; when the limiting column is matched with the limiting section, the peripheral part of the shielding hole shields the operation hole.

The utility model provides a direct current breaker dolly, through guide rail set spare's setting, when guaranteeing that drive arrangement drive operating panel is close to or keeps away from the front end plate, the trapped orbit directly slides each other with connecting the member, has increased the holding surface, has effectively prevented operating panel because of supporting not enough tenesmic problem.

The above description is only an overview of the technical solution of the present invention, and in order to make the technical means of the present invention clearer and can be implemented according to the content of the description, the following detailed description is made of preferred embodiments of the present invention.

Drawings

Fig. 1 is a schematic view of an overall structure of a dc circuit breaker trolley according to an embodiment of the present invention;

fig. 2 is a schematic side view of a dc circuit breaker trolley according to an embodiment of the present invention;

fig. 3 is a schematic structural view of a guide rail assembly according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a driving device in an embodiment of the present invention;

fig. 5 is a schematic structural view of a clutch mechanism in an embodiment of the present invention;

fig. 6 is a schematic structural view of a limiting assembly in an embodiment of the present invention;

fig. 7 is a schematic structural diagram of an operation panel in an embodiment of the present invention;

fig. 8 is a schematic diagram illustrating distribution of components inside the operation panel according to an embodiment of the present invention.

Detailed Description

The following detailed description of the preferred embodiments of the invention, which is to be read in connection with the accompanying drawings, forms a part of this application, and together with the embodiments of the invention, serve to explain the principles of the invention and not to limit its scope.

As shown in fig. 1, the embodiment of the present application provides a dc circuit breaker trolley, which includes a trolley body 1, an operation panel 2, a guide rail assembly 3 and a driving device 4.

As shown in fig. 2, the vehicle body 1 includes a frame 11 and a front end plate 12 installed at the front end of the frame 11, the frame 11 is used as a main framework part of the trolley and is generally formed by connecting a plurality of cross beams and pillars, wherein generally, the cross beams are arranged perpendicular to the front end plate 12, and the pillars are arranged parallel to the front end plate 12; the front end plate 12 serves as a storage surface for the operation panel 2, and when the operation panel 2 is retracted to the cart body 1, the distance between the operation panel 2 and the front end plate 12 is minimized.

The operation panel 2 is movably installed on the front side of the front end plate 12 and is arranged opposite to the front end plate 12, and the operation panel is used as a main component of the breaker trolley and is used for installing a breaker or other electrical components to realize related electrical switch operation through air.

As shown in fig. 3, the guide rail assembly 3 includes a fixed rail 31 and a connecting rod 32, the fixed rail 31 is fixedly installed on the frame 11, the fixed rail 31 is disposed perpendicular to the front end plate 12, in order to facilitate installation of the fixed rail 31, in the preferred embodiment of the present application, the fixed rail is welded or riveted on the cross beam, one end of the connecting rod 32 is fixedly installed on the operation panel 2, and the other end is movably inserted into the front end plate 12 and installed in cooperation with the fixed rail 31.

It will be appreciated that the fixed track 31 and the connecting rod 32 can be made of standard finished fittings, with very small mutual fit clearance and rolling friction, and the operating panel 2 can have better motion stability whether it is extended or retracted; secondly, the matching of the fixed rail 31 and the connecting rod piece 32 can effectively increase the structural supporting surface, improve the falling condition of the trolley outer operation panel 2, and facilitate the assembly and later debugging of the trolley mechanism system by production and maintenance personnel; in practical use, the structural forms of the fixed track 31 and the connecting rod 32 can be expanded and additionally provided with position detection elements or mechanism parts such as a travel switch and the like in design, so that the utilization rate of the inner space of the trolley is increased, and the automation process of the trolley is improved.

The driving device 4 is used for driving the operation panel 2 to approach or depart from the front end plate 12 along the fixed rail 31.

In other embodiments of the present application, the driving device may be a manual driving mechanism, or may be an electric or start driving mechanism, as long as the driving process of driving the operation panel 2 to approach or depart from the front end plate 12 along the fixed rail 31 as specified in the present application can be realized.

In the preferred embodiment of the present application, as shown in fig. 4 in combination with fig. 7, the driving device 4 includes a screw rod sleeve 41, a screw rod 42, a clutch mechanism 43 and a driving shaft 44, the screw rod sleeve 41 is fixedly mounted on the frame 11, the screw rod 42 is movably screwed into the screw rod sleeve 41, a through hole 12a is formed at a position of the front end plate 12 corresponding to the screw rod 42, the driving shaft 44 is rotatably mounted on the operation panel 2, an operation hole 2a is formed at a position of the front end of the operation panel 2 corresponding to the driving shaft 44, and the clutch mechanism 43 is mounted between the driving shaft 44 and the screw rod 42 for separating or combining the driving shaft 44 and the screw rod 42 to cut off or transmit the power input from the driving shaft 44 to the screw rod 42.

When the driving device 4 is used, a worker can rotate the driving shaft through the operation hole 2a to control the rotation of the screw rod 42, and it can be understood that, in some embodiments, the front end of the driving shaft 44 is designed to be a four-corner or hexagonal square shaft to rotate in cooperation with the rocking handle for driving.

In the present embodiment, as shown in fig. 5, the clutch mechanism 43 includes a clutch box 431, an input shaft 432, an output shaft 433, a clutch sleeve 434, a dial 435 and a return elastic member 436, the clutch box 431 is fixedly installed at the rear side of the operation panel 2, the input shaft 432 and the output shaft 433 are respectively rotatably connected to the front end and the rear end of the clutch box 431, the front end of the input shaft 432 is coaxially and drivingly connected to the drive shaft 44, the rear end of the output shaft 433 is coaxially and drivingly connected to the lead screw 42, the clutch sleeve 434 is installed at the clutch box 431 in a front-back sliding manner, the front end of the clutch sleeve 434 is provided with a first insertion slot 434a, the rear end of the input shaft 432 is slidably inserted into the first insertion slot 434a, the rear end of the input shaft 432 is provided with a first driving portion 4321 for driving the clutch sleeve 434 to synchronously rotate, the rear end of the clutch sleeve 434 is provided with a second insertion slot 434b, the front end of the output shaft 433 is slidably inserted into the second insertion slot 434b, the front end of the output shaft 433 is provided with a second driving part 4331 which is used for synchronously rotating with the clutch sleeve 434, the shifting plate 435 is connected with the clutch sleeve 434 and is used for driving the clutch sleeve 434 to move forwards or backwards under the action of external force so as to respectively realize the separation or combination of the clutch sleeve 434 and the input shaft 432 or the output shaft 433, and the reset elastic part 436 is arranged between the clutch sleeve 434 and the clutch box 431 and is used for driving the clutch sleeve 434 to be always positioned at a determined position in the clutch box 431.

Under normal conditions, the front end and the rear end of the clutch sleeve 434 are respectively connected with the input shaft 432 and the output shaft 433, the power input from the driving shaft 44 to the screw rod 42 can be normally transmitted, the driving shaft 44 rotates, and through the transmission of the clutch sleeve 434, the screw rod 42 rotates and is in threaded abutting effect with the screw rod sleeve 41, so that the screw rod 42 moves forward or backward; when the plectrum 435 drives the clutch sleeve 434 to move forwards under the action of external force, the rear end of the clutch sleeve 434 is separated from the output shaft 433, and the power input from the driving shaft 44 to the screw rod 42 is cut off; or when the plectrum 435 drives the clutch sleeve 434 to move backwards under the action of external force, the front end of the clutch sleeve 434 is separated from the input shaft 432, and the power input from the driving shaft 44 to the screw rod 42 is cut off; when the power input from the driving shaft 44 to the screw rod 42 is cut off, the driving shaft 44 rotates and does not drive the screw rod 42 to move.

Preferably, in this embodiment, the first driving portion 4321 is a first columnar protrusion formed on a side surface of the input shaft 432; a first strip notch 434c matched with the first columnar protrusion is formed in the side wall of the first slot 434a along the front-rear direction, and similarly, the second driving part 4331 is a second columnar protrusion formed on the side surface of the output shaft 433; the sidewall of the second slot 434b is opened with a second bar-shaped notch 434d engaged with the second cylindrical protrusion along the front-rear direction.

In order to limit the forward or backward stroke of the operation panel 2, the driving device 4 further includes a limiting assembly 45, as shown in fig. 2 and fig. 6, the limiting assembly 45 includes a limiting seat 451, a connecting plate 452, a first limiting block 453 and a second limiting block 454, the limiting seat 451 is fixedly mounted on the frame 11, the lead screw sleeve 41 is fixedly mounted on the limiting seat 451, a gap is formed between the limiting seat 451 and the lead screw sleeve 41, the connecting plate 452 is slidably mounted in the gap in the front-back direction, the first limiting block 453 and the second limiting block 454 are respectively mounted on the connecting plate 452 in the front-back direction at intervals, so that the connecting plate 452 moves in the stroke limited by the first limiting block 453 and the second limiting block 453, and one end of the connecting plate 452, which is far away from the limiting seat 451, extends into the clutch case 431 and is fixedly connected with the shifting piece 435.

The connection between the link plate 452 and the pick 435 ensures that when the link plate 452 moves within the stroke defined by the first limit block 453 and the second limit block 453, the pick 435 does not generate a force to the clutch sleeve 434 to move back and forth due to the action of the return elastic member 436, and ensures that the power input from the driving shaft 44 to the lead screw 42 is normally transmitted; when the operation panel 2 retreats until the first stopper 453 abuts against the stopper base 451, the connecting plate 452 and the paddle 435 cannot retreat continuously with the operation panel 2 due to the restriction of the first stopper 453, therefore, the shifting piece 435 overcomes the reset force of the reset elastic member 436 to push the clutch sleeve 434 to move forward, the rear end of the clutch sleeve 434 is separated from the output shaft 433, the power input from the driving shaft 44 to the screw rod 42 is cut off, the operation panel 2 stops moving, and similarly, when the operation panel 2 moves forward until the second limit block 454 abuts against the limit seat 451, due to the limitation of the second limit block 454, the connecting plate 452 and the poking piece 435 cannot continue to advance along with the operation panel 2, thus, the paddle 435 pulls the clutch sleeve 434 backward against the restoring force of the restoring elastic member 436, the rear end of the clutch sleeve 434 is separated from the output shaft 433, the power input from the driving shaft 44 to the screw rod 42 is cut off, and the operation panel 2 stops moving.

In the preferred embodiment of the present application, the return elastic member 436 includes a guide rod 4361, a first return spring 4362 and a second return spring 4363, the guide rod 4361 is installed in the clutch case 431 along the front-rear direction, the pick 435 is movably inserted into the guide rod 4361, the first return spring 4362 is installed between the front end surface of the pick 436 and the front end side wall of the clutch case 431, and the second return spring 4363 is installed between the rear end surface of the pick 436 and the rear end side wall of the clutch case 431.

Under the combined action of the first return spring 4362 and the second return spring 4363, the poking sheet 435 is always located at the middle position of the clutch box 431, and the poking sheet 435 is connected with the clutch sleeve 434, so that the clutch sleeve 434 is always automatically reset to the middle position of the clutch box 431.

More preferably, a first spiral surface 4341 is formed on the front end surface of the clutch sleeve 434, and two ends of the first spiral surface 4341 correspond to the outer ends of two side walls of the first bar-shaped notch 434c, respectively; a second spiral surface 4342 is formed on the rear end surface of the clutch sleeve 434, and two ends of the second spiral surface 4342 are respectively corresponding to the outer ends of two side walls of the second strip-shaped notch 434 d.

Because the front end surface of the clutch sleeve 434 is the first spiral surface 4341, when the front end of the clutch sleeve 434 is separated from the input shaft 432, the first driving portion 4321 extends from the outer end of the first strip-shaped notch 434c, and the first driving portion 4321 climbs along the first spiral surface 4341 along with the rotation of the input shaft 432, because there is a height difference between the two ends of the first spiral surface 4341, when the first driving portion 4321 rotates along the first spiral surface 4341 for one turn, the clutch sleeve 434 is reset under the action of the reset elastic member 436, so that the lowest point of the first spiral surface 4341 and the first driving portion 4321 generate an impact, and similarly, when the rear end of the clutch sleeve 434 is separated from the output shaft 432, the second driving portion 4331 extends from the outer end of the second strip-shaped notch 434d, and along with the rotation of the input shaft 432, the second driving portion 4331 climbs along the second spiral surface 4332, because there is a height difference between the two ends of the second spiral surface 4332, the clutch sleeve 434 is reset under the action of the reset elastic element 436, so that the lowest point of the second spiral surface 4342 generates impact with the second driving part 4331; when any impact is generated, the impact parts are collided to make a sound to remind a user that the user rotates to the limit position, so that the user is prevented from continuously idling, and a good fool-proof effect is achieved.

In the embodiment of the present application, the coupling manner between the clutch sleeve 434 and the pick 435 is preferably as follows, a slot 434e is formed in the middle of the outer side wall of the clutch sleeve 434, and the pick 435 is clipped in the slot 434 e.

As shown in fig. 7 and 8, in order to prevent the driving shaft 44 from being rotated by mistake of an operator, the operation panel 2 includes a plate body 21, a position-limiting post 22 and a sliding door 23, a sliding cavity 21a is formed inside the plate body 21, the sliding door 23 is slidably installed in the sliding cavity 21a, a sliding slot 23a and a shielding hole 23b are formed on the sliding door 23, the position-limiting post 22 is rotatably installed on the plate body 21, the position-limiting post 22 is inserted in the sliding slot 23a, the sliding slot 23a includes a transversely arranged straight section a1 and a position-limiting section a2 formed at one end of the straight section a1 and having a size larger than that of the straight section a1, a side wall of the position-limiting post 22 includes an opposite straight portion 221 and an opposite arc portion 222, the width of the straight portion 221 is smaller than that of the straight section a1, and the diameter of the arc portion 222 is larger than that of the straight section a1 and smaller than that of the position-limiting section a 2; when the stopper post 22 is engaged with the stopper section a2, the peripheral portion of the shielding hole 23b shields the operation hole 2 a.

When the limiting column 22 is matched with the limiting section a2, the limiting column 22 is rotated to enable the straight part 221 of the limiting column 22 to be opposite to the straight section a1 of the sliding chute 23a, so that the sliding door 23 can be locked by the limiting column 22, the peripheral part of the shielding hole 23b shields the operation hole 2a, a worker cannot operate the driving shaft 44, and the position stability of the operation panel 2 is ensured; when the operation panel 2 needs to be moved, the limiting column 22 is rotated to make the arc-shaped part 222 of the limiting column 22 opposite to the straight section a1 of the sliding chute 23a, at this time, the sliding door 23 can slide to make the shielding hole 23b correspond to the operation hole 2a, the sliding door 23 does not block the operation hole 2a, and the operator can normally operate the driving shaft 44.

In the embodiment of the present application, as shown in fig. 2, the vehicle body 1 further includes a bottom plate 13 mounted at the lower end of the vehicle frame 11, a top plate 14 mounted at the upper end of the vehicle frame 11, and a support rod 15 vertically mounted on the bottom plate 13, and the limit seat 451 is fixedly mounted at the upper end of the support rod 15.

The embodiment of this application, setting through guide rail set spare 4, guarantee when drive arrangement 4 drive operating panel 2 is close to or keeps away from front end plate 12, fixed track 41 and connecting rod piece 42 directly slide each other, the holding surface has been increased, operating panel 232 has effectively been prevented because of supporting not enough and the tenesmic problem, secondly this embodiment drives advancing or retreating of operating panel 2 through drive arrangement 4, because the existence of this clutching mechanism 43, drive arrangement 4 has been guaranteed to operating panel 2's clutch control, and then realize the accurate limit control of operating panel 2 motion, the stability of operating panel 2 motion has further been increased.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention.

Claims (10)

1. A direct current breaker trolley is characterized by comprising a trolley body, an operation panel, a guide rail assembly and a driving device;

the vehicle body comprises a frame and a front end plate arranged at the front end of the frame;

the operation panel is movably arranged on the front side of the front end plate and is opposite to the front end plate;

the guide rail assembly comprises a fixed rail and a connecting rod piece, the fixed rail is fixedly arranged on the frame and is perpendicular to the front end plate, one end of the connecting rod piece is fixedly arranged on the operation panel, and the other end of the connecting rod piece is movably inserted into the front end plate and is matched with the fixed rail;

the driving device is used for driving the operation panel to be close to or far away from the front end plate along the fixed rail.

2. The direct current breaker trolley according to claim 1, wherein the driving device comprises a screw sleeve, a screw, a clutch mechanism and a driving shaft, the screw sleeve is fixedly mounted on the frame, the screw is movably screwed into the screw sleeve, a through hole is formed in the front end plate corresponding to the position of the screw, the driving shaft is rotatably mounted on the operation panel, an operation hole is formed in the front end of the operation panel corresponding to the driving shaft, and the clutch mechanism is mounted between the driving shaft and the screw and used for separating or combining the driving shaft and the screw so as to cut off or transmit power input by the driving shaft to the screw.

3. The DC breaker trolley according to claim 2, wherein the clutch mechanism comprises a clutch box, an input shaft, an output shaft, a clutch sleeve, a shifting plate and a reset elastic member, the clutch box is fixedly installed at the rear side of the operation panel, the input shaft and the output shaft are respectively rotatably connected to the front end and the rear end of the clutch box, the front end of the input shaft is coaxially and drivingly connected to the drive shaft, the rear end of the output shaft is coaxially and drivingly connected to the lead screw, the clutch sleeve is installed on the clutch box in a front-and-back sliding manner, the front end of the clutch sleeve is provided with a first slot, the rear end of the input shaft is slidably inserted into the first slot, the rear end of the input shaft is provided with a first driving portion for driving the clutch sleeve to synchronously rotate, the rear end of the clutch sleeve is provided with a second slot, and the front end of the output shaft is slidably inserted into the second slot, the front end of the output shaft is provided with a second driving part which is used for synchronously rotating with the clutch sleeve, the shifting sheet is connected with the clutch sleeve and used for driving the clutch sleeve to move forwards or backwards under the action of external force so as to respectively realize the separation or combination of the clutch sleeve and the input shaft or the output shaft, and the reset elastic piece is arranged between the clutch sleeve and the clutch box and used for driving the clutch sleeve to be always positioned at a determined position in the clutch box.

4. The dc breaker cart of claim 3, wherein the first drive portion is a first cylindrical protrusion formed on a side surface of the input shaft; the second driving part is a second cylindrical protrusion formed on the side surface of the output shaft; the side wall of the first slot is provided with a first strip-shaped notch matched with the first columnar bulge along the front-back direction; and a second strip-shaped notch matched with the second columnar bulge is formed in the side wall of the second slot along the front-back direction.

5. The direct current breaker trolley according to claim 4, wherein a first spiral surface is formed on the front end surface of the clutch sleeve, and two ends of the first spiral surface correspond to the outer ends of two side walls of the first strip-shaped notch respectively; and a second spiral surface is formed on the rear end surface of the clutch sleeve, and two ends of the second spiral surface correspond to the outer ends of two side walls of the second strip-shaped notch respectively.

6. The direct current circuit breaker trolley according to claim 3, wherein the driving device further comprises a limiting assembly, the limiting assembly comprises a limiting seat, a connecting plate, a first limiting block and a second limiting block, the limiting seat is fixedly mounted on the frame, the screw rod sleeve is fixedly mounted on the limiting seat, a gap is formed between the limiting seat and the screw rod sleeve, the connecting plate can be mounted in the gap in a front-back sliding manner, the first limiting block and the second limiting block are respectively mounted on the connecting plate in a front-back spaced manner, so that the connecting plate moves in a stroke limited by the first limiting block and the second limiting block, and one end of the connecting plate, which is far away from the limiting seat, extends into the clutch box and is fixedly connected with the shifting piece.

7. The DC circuit breaker trolley according to claim 3, wherein the reset elastic member comprises a guide rod, a first reset spring and a second reset spring, the guide rod is installed in the clutch box along the front-back direction, the shifting piece is movably arranged on the guide rod in a penetrating manner, the first reset spring is installed between the front end face of the shifting piece and the front end side wall of the clutch box, and the second reset spring is installed between the rear end face of the shifting piece and the rear end side wall of the clutch box.

8. The direct current breaker trolley according to claim 3, wherein a clamping groove is formed in the middle of the outer side wall of the clutch sleeve, and the poking piece is clamped in the clamping groove.

9. The DC breaker trolley according to claim 6, wherein the trolley body further comprises a bottom plate mounted at the lower end of the trolley frame, a top plate mounted at the upper end of the trolley frame, and a support rod vertically mounted on the bottom plate, and the limiting seat is fixedly mounted at the upper end of the support rod.

10. The DC circuit breaker trolley as claimed in claim 2, wherein the operation panel comprises a plate body, a limiting post and a sliding door, a sliding cavity is formed inside the plate body, the sliding door is slidably mounted in the sliding cavity, a sliding slot and a shielding hole are formed on the sliding door, the limiting post is rotatably mounted on the plate body, the limiting post is inserted in the sliding slot, the sliding slot comprises a transversely arranged straight section and a limiting section which is formed at one end of the straight section and has a size larger than that of the straight section, the side wall of the limiting post comprises opposite straight parts and opposite arc parts, the width of the straight parts is smaller than that of the straight section, and the diameter of the arc parts is larger than that of the straight section and smaller than that of the limiting section; when the limiting column is matched with the limiting section, the peripheral part of the shielding hole shields the operation hole.

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