CN216215397U - Trolley for power distribution device - Google Patents

Abstract

The application discloses dolly for distribution device, it is including being used for sliding automobile body and the screw rod of threaded connection on the automobile body that sets up in the casing, the automobile body is used for being connected with the circuit breaker, be provided with the electro-magnet on the automobile body, the screw rod includes the locking part along self axial, the push rod tip of electro-magnet can move to contradict with the locking part, the push rod of electro-magnet is used for restricting the locking part and rotates. This application has the effect that improves the stability of distribution device power supply.

Description

Trolley for power distribution device

Technical Field

The application relates to the field of power distribution devices, in particular to a trolley for a power distribution device.

Background

The power distribution device is used for receiving and distributing electric energy during normal operation, and can quickly cut off a fault part and restore normal operation through automatic or manual operation when a fault occurs. It can be said that the power distribution device is an important device that realizes the electrical main wiring function in particular.

In the related art, a power distribution apparatus shown in fig. 1 includes a housing 8, a front door 81 disposed on the housing 8, a trolley 82 slidably disposed in the housing 8, a circuit breaker 83 disposed on the trolley 82, a screw 2 penetrating and screwed on the trolley 82, and a stationary contact 84 disposed in the housing 8. The screw 2 is rotated to drive the trolley 82 to move, and the trolley 82 drives the breaker 83 to move, so that the breaker 83 is abutted against or separated from the fixed contact 84.

With respect to the related art among the above, the inventors consider that the following drawbacks exist: after the trolley is moved to the position where the circuit breaker is abutted to the fixed contact through the screw, the screw is rotated by mistake by a worker, so that the circuit breaker is easily separated from the fixed contact, and the power distribution device is not powered any more and needs to be improved.

SUMMERY OF THE UTILITY MODEL

In order to improve the stability of distribution device power supply, this application provides a dolly for distribution device.

The application provides a dolly for distribution device adopts following technical scheme:

the utility model provides a dolly for distribution device, is including being used for sliding automobile body and the screw rod of threaded connection on the automobile body that sets up in the casing, the automobile body is used for being connected with the circuit breaker, be provided with the electro-magnet on the automobile body, the screw rod includes the locking part along self axial, the push rod tip of electro-magnet can move to contradict with the locking part, the push rod of electro-magnet is used for restricting the locking part and rotates.

Through adopting above-mentioned technical scheme, rotate the axial motion of screw rod in order to drive the automobile body along the screw rod to make the automobile body drive the circuit breaker and remove in the casing, and then make the circuit breaker can remove to contradict or separate with the static contact.

When the circuit breaker is abutted to the fixed contact, the electromagnet is electrified, so that the push rod of the electromagnet extends out and is abutted to the stop part, the stop part is limited to continue rotating, and the vehicle body and the circuit breaker are further limited to continue moving. Through above-mentioned structure for when circuit breaker and static contact are contradicted, the circuit breaker is difficult to touch because of the staff mistake and rotate the screw rod and lead to circuit breaker and static contact separation, stability when having improved this application distribution device power supply.

Optionally, the stopping portion is provided with a stopping groove for inserting the end portion of the push rod of the power supply magnet.

Through adopting above-mentioned technical scheme, compare in the push rod with the electro-magnet and directly contradict with the lateral wall of detent, insert the locking groove with the push rod tip of electro-magnet, improved the spacing effect of the push rod of electro-magnet to the detent, further improved the stability when this application distribution device supplies power.

Optionally, still include the work position mechanism, the work position mechanism is including connecting the work position locating pin on the detent, setting up the work position spacer pin on the dolly, the work position spacer pin is used for contradicting with the work position locating pin, when the work position locating pin contradicts with the work position spacer pin, the locking groove aligns with the push rod of electro-magnet.

Through adopting above-mentioned technical scheme, when the screw rod rotated to the position locating pin of working and contradicted with the position spacer pin of working, the position spacer pin of working had restricted the screw rod through the position locating pin of working and has continued the rotation. And at this time, the stop groove is aligned with the push rod of the electromagnet.

Through above-mentioned structure, the work position mechanism has not only played limiting displacement to the screw rod, and the restriction screw rod rotates so that the circuit breaker is stabilized at the work position, and helps the push rod of electro-magnet to stretch into in the locking groove.

Optionally, the trolley further comprises an auxiliary position mechanism, the auxiliary position mechanism comprises an auxiliary position positioning pin connected to the stopping part and an auxiliary position limiting pin arranged on the trolley, and the auxiliary position limiting pin is used for abutting against the auxiliary position positioning pin.

Through adopting above-mentioned technical scheme, when dolly drive circuit breaker through this application removed to separating with the static contact, supplementary spacer pin and auxiliary positioning pin had played the effect of restriction screw rod pivoted for the circuit breaker can be stabilized at supplementary station.

Through the structure, the circuit breaker can stop at least two different stations, and the circuit breaker is convenient for workers to position.

Optionally, the working position limiting pin and the auxiliary position limiting pin are arranged on the trolley in a sliding mode, the working position mechanism further comprises a working position linkage assembly and a working position travel switch, the auxiliary position mechanism further comprises an auxiliary position linkage mechanism and an auxiliary position travel switch, the structure of the auxiliary position linkage mechanism is consistent with that of the working position linkage assembly, the working position limiting pin is in linkage connection with the working position travel switch through the working position linkage assembly, and the auxiliary position limiting pin is in linkage connection with the auxiliary position travel switch through the auxiliary position linkage mechanism.

By adopting the technical scheme, when the circuit breaker moves to the working position, the working position locating pin on the screw rod is pressed on the working position limiting pin and pushes the working position limiting pin to slide, and the working position limiting pin is in linkage connection with the working position travel switch through the working position linkage assembly, so that the working position limiting pin drives the working position travel switch to be opened through the working position linkage assembly. Similarly, when the circuit breaker moves to the auxiliary station, the auxiliary position limiting pin drives the auxiliary position travel switch to be opened through the auxiliary position linkage mechanism.

Through connect pilot lamp or siren on workstation travel switch and supplementary position travel switch respectively to when making the circuit breaker remove to the workstation, or when the circuit breaker removed to supplementary station, the homoenergetic can send the suggestion to the staff, helps the staff to the judgement of staff's current station.

Optionally, the work station linkage assembly includes a baffle pin rotatably connected to the trolley, and a first baffle and a second baffle connected to the baffle pin, the second baffle of the work station linkage assembly is used for abutting against the work station travel switch, and the first baffle of the work station linkage assembly is located on a moving path of the work station limit pin.

Through adopting above-mentioned technical scheme, when the circuit breaker removed to the work station, the screw rod rotated to the work position locating pin and supported and press on the work position spacer pin to promote the work position spacer pin and remove. The working position limiting pin pushes the first baffle to rotate in the moving process, the first baffle drives the second baffle to rotate through the baffle pin, so that the second baffle is pressed on the working position stroke switch in a propping mode, the second baffle is limited to rotate, and meanwhile the working position limiting pin is limited to continue sliding.

Through the structure, the screw rod can be limited to rotate by the working position limiting pin and the working position positioning pin, and the travel switch can be triggered. And the structure is simple and convenient to install.

Optionally, a first driving mechanism is arranged on the trolley and comprises a motor and a gear set, and the motor is in linkage connection with the screw rod through the gear set.

Through adopting above-mentioned technical scheme, when the drive automobile body removed, the starter motor, the motor passes through gear train drive screw rod and rotates to make the automobile body drive the circuit breaker and remove. Compare in staff's manual rotation screw rod, rotate through motor and gear train drive screw rod, transmission precision is high, and has reduced staff's working strength.

Optionally, the front door assembly further comprises a second driving mechanism, the second driving mechanism comprises a transmission shaft which is arranged on the front door in a sliding mode, the transmission shaft is connected to the front door in a rotating mode, the screw rod comprises a connecting portion, and a transmission groove which is used for enabling the end portion of the transmission shaft to be inserted is formed in the connecting portion.

By adopting the technical scheme, when the worker manually drives the vehicle body to move, the transmission shaft slides in the direction close to the front door so that the end part of the transmission shaft is inserted into the transmission groove, and then the transmission shaft is rotated to drive the screw rod to rotate.

Through the structure, not only can the staff control the screw rod to rotate outside the front door, but also the end part of the screw rod does not need to directly penetrate through the front door, thereby being beneficial to the opening and closing of the front door.

Optionally, the second driving mechanism further comprises a reset piece connected to the transmission shaft, the reset piece is used for driving the transmission shaft to move in a direction away from the screw rod, and when the reset piece is in a natural state, a gap exists between the transmission shaft and the connecting portion.

By adopting the technical scheme, when the reset piece is in a state, a gap exists between the transmission shaft and the connecting part, so that when a worker wants to manually drive the screw to rotate, the force applied to the transmission shaft by the reset piece needs to be resisted, the end part of the transmission shaft is driven to be inserted into the transmission groove, and the screw can be rotated through the transmission shaft.

Through above-mentioned structure for the screw rod is difficult for touching because of the mistake and rotates the transmission shaft and take place to rotate, stability when further having improved this application distribution device power supply.

Optionally, the second driving mechanism further includes a shaft sleeve for fixing to the front door, the shaft sleeve is sleeved on the transmission shaft, the shaft sleeve is used for allowing the transmission shaft to slide, and the transmission shaft is rotatably disposed on the shaft sleeve.

Through adopting above-mentioned technical scheme, compare in the direct setting of transmission shaft on the qianmen, through fixed axle sleeve on the qianmen, not only help the transmission shaft to rotate, still help the transmission shaft to slide, stability when having improved the transmission shaft and having removed or rotate.

In summary, the present application includes at least one of the following beneficial technical effects:

when the circuit breaker is abutted against the static contact, the screw is limited to rotate by the electromagnet, so that the circuit breaker and the static contact are not easy to separate due to the fact that a worker mistakenly touches the rotating screw, and the stability of the power distribution device during power supply is improved;

the rotation of the screw rod is limited through the working position mechanism and the auxiliary position mechanism, so that the circuit breaker can stay at a working position or an auxiliary position, and the circuit breaker can be conveniently positioned by workers;

through first actuating mechanism and second actuating mechanism for the screw rod can pass through motor or manual drive, and the precision is high when passing through motor drive, passes through manual drive when the motor damages, has improved the fault-tolerant rate of this application dolly.

Drawings

Fig. 1 is a schematic structural diagram of the background art.

Fig. 2 is a schematic structural diagram of an embodiment of the present application.

Fig. 3 is a schematic structural diagram highlighting a first drive mechanism in an embodiment of the present application.

Fig. 4 is a partially exploded view highlighting a second drive mechanism in an embodiment of the present application.

FIG. 5 is a schematic view showing a partial structure of a work station linkage assembly according to an embodiment of the present disclosure.

Description of reference numerals:

1. a vehicle body; 11. a vehicle body; 12. a wheel; 13. a drive block; 2. a screw; 21. a connecting portion; 211. a transmission groove; 22. a threaded portion; 23. a stopper portion; 231. a stopper groove; 3. a first drive mechanism; 31. a motor; 32. mounting a plate; 33. a gear set; 331. a first drive gear; 332. a second transmission gear; 333. a third transmission gear; 34. a guard plate; 4. a second drive mechanism; 41. a shaft sleeve; 42. a drive shaft; 421. a housing portion; 422. a rotating part; 423. a limiting part; 424. a transmission section; 43. a reset member; 5. an electromagnet; 6. a working position mechanism; 61. a working position positioning pin; 62. a working position pin sleeve; 63. a working position limiting pin; 64. a work station linkage assembly; 641. a fixed mount; 642. a baffle pin; 643. a first baffle plate; 644. a second baffle; 65. a working position travel switch; 7. an auxiliary position mechanism; 71. an auxiliary position locating pin; 72. an auxiliary position pin bush; 73. an auxiliary position limit pin; 74. an auxiliary position linkage assembly; 75. an auxiliary position travel switch; 8. a housing; 81. a front door; 82. a trolley; 83. a circuit breaker; 84. and (7) carrying out static contact.

Detailed Description

The present application is described in further detail below with reference to figures 2-5.

The embodiment of the application discloses a trolley for a power distribution device. Referring to fig. 2 and 3, the trolley for the power distribution device comprises a trolley body 1 arranged in a shell in a sliding mode, a screw rod 2 connected to the shell in a rotating mode, a first driving mechanism 3 and a second driving mechanism 4 for driving the screw rod 2 to rotate, an electromagnet 5 arranged on the trolley body 1, a working position mechanism 6 for limiting rotation of the screw rod 2 and an auxiliary position mechanism 7.

Referring to fig. 2 and 3, the vehicle body 1 includes a vehicle body 11 fixedly connected to the circuit breaker, four wheels 12 rotatably connected to the vehicle body 11, and a driving block 13 fixed to the vehicle body 11. The axis of the screw 2 extends along the sliding direction of the vehicle body 1, the screw 2 is divided into a connecting part 21, a thread part 22 and a stopping part 23 along the self-axial direction, the thread part 22 and the stopping part 23 penetrate through the driving block 13 and the vehicle body 11, and the thread part 22 is in threaded connection with the driving block 13.

Referring to fig. 3, the first drive mechanism 3 includes a motor 31, a mounting plate 32, a gear train 33, and a guard 34, and the motor 31, the mounting plate 32, and the guard 34 are fixed to the vehicle body 11. The gear set 33 includes a first transmission gear 331, a second transmission gear 332 and a third transmission gear 333, and the first transmission gear 331 and the third transmission gear 333 are meshed with the second transmission gear 332. The first transmission gear 331 and the second transmission gear 332 are both rotatably connected to the mounting plate 32, and the first transmission gear 331 is fixed to an output shaft of the motor 31. The third transmission gear 333 is in threaded sleeve connection with the threaded portion 22, the driving block 13 and the guard plate 34 are arranged along the axial direction of the screw rod 2, and the driving block 13 and the guard plate 34 are respectively located on two sides of the third transmission gear 333 to limit the third transmission gear 333.

Referring to fig. 3, when the screw 2 is rotated by the first driving mechanism 3, the motor 31 is started to drive the first transmission gear 331 to rotate, the second transmission gear 332 and the third transmission gear 333 are linked to drive the threaded portion 22 to rotate, and the threaded portion 22 penetrates through the driving block 13 and is threadedly connected to the driving block 13, so that the driving block 13 drives the vehicle body 11 to move when the threaded portion 22 rotates.

Referring to fig. 2 and 4, the second driving mechanism 4 includes a bushing 41, a transmission shaft 42, and a restoring member 43, and the bushing 41 is used to be fixed to the front door. The shaft sleeve 41 is sleeved on the transmission shaft 42, the transmission shaft 42 is arranged in the shaft sleeve 41 in a sliding manner along the axial direction of the screw rod 2, and the transmission shaft 42 can rotate relative to the shaft sleeve 41.

Referring to fig. 2 and 4, the axis of the transmission shaft 42 is collinear with the axis of the screw 2, and the transmission shaft 42 is sequentially divided into a sheathing part 421, a rotating part 422, a limiting part 423, and a transmission part 424 along the direction from the transmission shaft 42 to the screw 2.

Referring to fig. 3 and 4, the engaging portion 421 is a square rod, and the engaging portion 421 is used for engaging a handle or a socket wrench to drive the transmission shaft 42 to rotate. The rotating part 422 is rotatably connected in the shaft sleeve 41, the reset piece 43 is a spring, the reset piece 43 is sleeved on the rotating part 422, two ends of the reset piece 43 are respectively fixedly connected with the rotating part 422 and the shaft sleeve 41, and the reset piece 43 is used for driving the transmission shaft 42 to move towards the direction far away from the screw rod 2. The restoring member 43 and the transmission shaft 42 are in a natural state of the restoring member 43 when not subjected to an external force. The outer diameter of the limiting part 423 is larger than that of the shaft sleeve 41, when the reset piece 43 is in a natural state, the limiting part 423 is abutted against the shaft sleeve 41, and a gap exists between the transmission part 424 and the connecting part 21. The connecting portion 21 has two mutually-communicated transmission grooves 211 on the side wall near the transmission shaft 42, and both the transmission grooves 211 are used for inserting the transmission portion 424.

Referring to fig. 3 and 4, when the screw rod 2 is driven by the second driving mechanism 4, the handle or the socket wrench is sleeved on the sleeve portion 421, and then the transmission shaft 42 is pushed to move toward the screw rod 2, so that the transmission portion 424 is inserted into one of the transmission grooves 211, and the reset piece 43 is compressed. Then, the transmission shaft 42 is rotated to drive the screw rod 2 to rotate, so as to drive the vehicle body 1 and the circuit breaker to move.

Referring to fig. 3, a stopper groove 231 is formed through the stopper 23, and the insertion direction of the stopper groove 231 is perpendicular to the axial direction of the screw 2. The electromagnet 5 is fixed to the vehicle body 11, and the stopper groove 231 is used for inserting the end of the push rod of the electromagnet 5. When the plunger of the electromagnet 5 is inserted into the stopper groove 231, it can abut against the groove wall of the stopper groove 231 when the stopper 23 rotates, thereby restricting the rotation of the stopper 23. When the circuit breaker is switched on, the electromagnet 5 is electrified, and a push rod of the electromagnet 5 extends out of the stop groove 231 and is inserted into the stop groove; when the electromagnet 5 is powered off when the breaker is opened, the push rod of the electromagnet 5 is retracted and pulled out of the stop groove 231.

Referring to fig. 3, the working position mechanism 6 includes a working position positioning pin 61, a working position pin sleeve 62, a working position limiting pin 63, a working position linkage assembly 64, and a working position travel switch 65. The working position positioning pin 61 is fixed on the stopper 23, the working position pin bushing 62 is fixed on the vehicle body 11, and the working position limiting pin 63 penetrates through and is slidably arranged on the working position pin bushing 62. The working position limiting pin 63 is used for abutting against the working position positioning pin 61, when the screw rod 2 rotates to the working position positioning pin 61 to abut against the working position limiting pin 63, the circuit breaker abuts against the fixed contact, and the stop groove 231 is aligned with the push rod of the electromagnet 5.

Referring to fig. 3, the auxiliary position mechanism 7 includes an auxiliary position positioning pin 71, an auxiliary position pin sleeve 72, an auxiliary position stopper pin 73, an auxiliary position link assembly 74, and an auxiliary position travel switch 75. The auxiliary position positioning pin 71 is fixed to the stopper 23, the auxiliary position pin bushing 72 is fixed to the vehicle body 11, and the auxiliary position stopper pin 73 is slidably provided to the auxiliary position pin bushing 72. The auxiliary position limiting pin 73 is used for abutting against the auxiliary position positioning pin 71, and when the screw 2 rotates to the position where the auxiliary position positioning pin 71 abuts against the auxiliary position limiting pin 73, the circuit breaker is separated from the static contact.

Referring to fig. 3 and 5, the mechanism of the assist bit linkage assembly 74 is identical to the structure of the station linkage assembly 64, and the station linkage assembly 64 includes a fixed frame 641 fixed to the vehicle body 11, a baffle pin 642 pivotally connected at both ends to the vehicle body 11 and the fixed frame 641, and a first baffle 643 and a second baffle fixed to the baffle pin 642. The first blocking plate 643 of the station linkage assembly 64 is located on the moving path of the station limiting pin 63, and the first blocking plate 643 of the assist station linkage assembly 74 is located on the moving path of the assist station limiting pin 73. The second baffle 644 of the working position linkage assembly 64 is used for abutting against the working position travel switch 65, and the second baffle 644 of the auxiliary position linkage assembly 74 is used for abutting against the auxiliary position travel switch 75. Through connect the pilot lamp on position travel switch 65 and supplementary position travel switch 75 respectively to through position travel switch 65 and supplementary position travel switch 75 control different pilot lamps respectively and turn on or off, thereby play the indicative function to the staff.

The implementation principle of the trolley for the power distribution device in the embodiment of the application is as follows: when the screw 2 is driven to rotate by the first driving mechanism 3 or the second driving mechanism 4, the threaded portion 22 is in threaded connection with the driving block 13, so that the vehicle body 1 moves along the axial direction of the screw 2 to drive the circuit breaker to move.

When the screw rod 2 rotates to the working position positioning pin 61 and is pressed against the working position limiting pin 63, the working position limiting pin 63 is abutted against the working position travel switch 65 through the working position linkage assembly 64, so that the prompting lamp arranged on the shell is switched on and prompts a worker that the circuit breaker moves to be abutted against the fixed contact. At this time, the stopping groove 231 is aligned with the push rod of the electromagnet 5, and the circuit breaker is closed to energize the electromagnet 5, and the end of the push rod of the electromagnet 5 is inserted into the stopping groove 231, thereby restricting the rotation of the screw 2.

Similarly, when the screw 2 rotates to the position of the auxiliary position of the positioning pin 71 to press against the position of the auxiliary position limit pin 73, the position of the auxiliary linkage assembly 74 and the position of the auxiliary position travel switch 75 are linked, so that another indicator light on the housing is turned on to indicate the worker that the circuit breaker has been separated from the static contact.

Through the structure, when the circuit breaker is contradicted with the static contact, the end part of the push rod of the electromagnet 5 is inserted in the stop groove 231 to limit the rotation of the screw rod 2, so that the circuit breaker is not easily separated from the static contact due to the fact that the worker mistakenly touches the rotation of the screw rod 2, and the stability of the power distribution device during power supply is improved.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (10)

1. The utility model provides a dolly for distribution device, is including being used for the sliding setting automobile body (1) in the casing and threaded connection screw rod (2) on automobile body (1), automobile body (1) are used for being connected its characterized in that with the circuit breaker: be provided with electro-magnet (5) on automobile body (1), screw rod (2) are along self axial including detent (23), the push rod tip of electro-magnet (5) can move to contradict with detent (23), the push rod of electro-magnet (5) is used for restricting detent (23) and rotates.

2. The cart for an electrical distribution apparatus of claim 1, wherein: the stopping part (23) is provided with a stopping groove (231) for inserting the end part of the push rod of the power supply magnet (5).

3. The cart for an electrical distribution apparatus of claim 2, wherein: still include work position mechanism (6), work position mechanism (6) are including connecting work position locating pin (61), the work position spacer pin (63) of setting on the dolly on detent (23), work position spacer pin (63) are used for contradicting with work position locating pin (61), when work position locating pin (61) contradict with work position spacer pin (63), retaining groove (231) aligns with the push rod of electro-magnet (5).

4. The cart for an electrical distribution apparatus of claim 3, wherein: the trolley is characterized by further comprising an auxiliary position mechanism (7), wherein the auxiliary position mechanism (7) comprises an auxiliary position positioning pin (71) connected to the stopping part (23) and an auxiliary position limiting pin (73) arranged on the trolley, and the auxiliary position limiting pin (73) is used for abutting against the auxiliary position positioning pin (71).

5. The cart for an electrical distribution apparatus of claim 4, wherein: the utility model discloses a trolley, including the dolly, work position limit pin (63) and supplementary position limit pin (73) all slide to set up on the dolly, work position mechanism (6) still include work position linkage subassembly (64) and work position travel switch (65), supplementary position mechanism (7) still include with work position linkage subassembly (64) structure unanimous supplementary position link gear and supplementary position travel switch (75), work position limit pin (63) are connected with work position travel switch (65) linkage through work position linkage subassembly (64), supplementary position limit pin (73) are connected with supplementary position travel switch (75) linkage through supplementary position link gear.

6. The cart for an electrical distribution apparatus of claim 5, wherein: the work position linkage assembly (64) comprises a baffle pin (642) rotatably connected to the trolley, a first baffle (643) and a second baffle (644) connected to the baffle pin (642), the second baffle (644) of the work position linkage assembly (64) is used for abutting against the work position travel switch (65), and the first baffle (643) of the work position linkage assembly (64) is located on the moving path of the work position limiting pin (63).

7. The cart for an electrical distribution apparatus of claim 1, wherein: be provided with first actuating mechanism (3) on the dolly, first actuating mechanism (3) include motor (31) and gear train (33), motor (31) are connected with screw rod (2) through gear train (33) linkage.

8. The cart for an electrical distribution apparatus of claim 1, wherein: still include second actuating mechanism (4), second actuating mechanism (4) are including being used for sliding transmission shaft (42) of setting on the qianmen, transmission shaft (42) rotate to be connected on the qianmen, screw rod (2) are including connecting portion (21), offer on connecting portion (21) and be used for supplying transmission shaft (42) tip to insert transmission groove (211) of establishing.

9. The cart for an electrical distribution apparatus of claim 8, wherein: the second driving mechanism (4) further comprises a resetting piece (43) connected to the transmission shaft (42), the resetting piece (43) is used for driving the transmission shaft (42) to move towards the direction far away from the screw rod (2), and when the resetting piece (43) is in a natural state, a gap exists between the transmission shaft (42) and the connecting portion (21).

10. The cart for an electrical distribution apparatus of claim 8, wherein: the second driving mechanism (4) further comprises a shaft sleeve (41) used for being fixed on the front door, the shaft sleeve (41) is sleeved on the transmission shaft (42), the shaft sleeve (41) is used for allowing the transmission shaft (42) to be arranged in a sliding mode, and the transmission shaft (42) is rotatably arranged on the shaft sleeve (41).

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