Switch trolley of high-voltage switch cabinet

Abstract

The invention provides a high-voltage switch cabinet switch trolley which comprises a base, a movable trolley body and a driving screw in transmission connection with the trolley body are arranged on the base, the high-voltage switch cabinet switch trolley further comprises a rotating seat and an operating handle, and the rotating seat is rotatably arranged on the base and is in transmission connection with the driving screw; an operation hole is formed in the rotating seat, the operation handle is provided with an operation head matched with the operation hole, a main controller, a counter and a display screen are further arranged on the base, the counter and the display screen are electrically connected with the main controller, the counter comprises a detection probe, the detection probe is arranged towards the rotating seat, an extension part is arranged on the peripheral wall of the rotating seat, and the extension part is connected with the display screen. The length direction of the extension part is consistent with the radial direction of the rotating seat; one end, far away from the rotating seat, of the extension part is provided with an induction sheet corresponding to the detection probe. The technical problem that an existing switch trolley is inconvenient to operate is solved, and the technical effects that the number of turns of rotation of the operation handle is automatically counted, and an operator can conveniently move the switch trolley to a preset position are achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of high-voltage power distribution, and particularly to a switch trolley for a high-voltage switch cabinet. Background Art

[0002] As the main electrical equipment of a substation, a high-voltage switch cabinet plays roles such as on-off, control, and protection during the power transmission process. A switch trolley is usually used to move and operate the switch inside the switch cabinet to realize the opening and closing of the control circuit.

[0003] The Chinese utility model patent with the publication number CN216624737U discloses a switch trolley assembly based on an electric service vehicle, including a base, on one side of the upper surface of which a connecting column is fixedly installed. On one side wall of the connecting column, two first wiring terminals are arranged, and on the other side, two pins are arranged; a switch trolley body is arranged on the upper side of the base, and on the upper side wall surface of the switch trolley body, a second wiring terminal is fixedly arranged; a heat dissipation mechanism is arranged in an installation groove arranged inside the switch trolley body. By arranging the heat dissipation mechanism, when the switch trolley body is powered on, heat dissipation can be carried out inside it to avoid short circuits of internal circuits caused by high temperature. The above-mentioned switch trolley assembly can be moved by fixedly installing universal wheels with brakes at the four corners of the lower surface of the base, which is convenient for connecting with an external power supply, saving a large amount of manpower and reducing the use cost.

[0004] When the switch trolley assembly disclosed in the above-mentioned utility model patent is in use, the switch trolley body can be moved on the upper side of the base by rotating a turning handle to drive a threaded rod to rotate, so as to control the on-off of the switch trolley body and the external power supply. And during the process of the operator rotating the turning handle, counting is required to ensure that the turning handle is rotated by a corresponding number of turns to move the switch trolley body in place. However, in the actual operation process, it is easy to have counting errors or the counting is not synchronized with the operation, resulting in collisions or poor contact between the pins and the slots, and further causing equipment failures or even damage. Therefore, the existing switch trolleys are inconvenient to operate. Summary of the Invention

[0005] Aiming at the deficiencies in the prior art, the present invention provides a switch trolley for a high-voltage switch cabinet, which solves the problem of inconvenient operation of the switch trolley existing in the prior art.

[0006] According to an embodiment of the present invention, a switch trolley for a high-voltage switch cabinet includes a base, a movable trolley body is provided on the base, and a driving screw rod that is drivingly connected to the trolley body. It further includes a rotating seat and an operating handle. The rotating seat is rotatably arranged on the base and is drivingly connected to the driving screw rod. An operation hole is provided on the rotating seat, and the operating handle has an operating head that cooperates with the operation hole. A main controller, a counter, and a display screen are further provided on the base. The counter and the display screen are electrically connected to the main controller respectively. The counter includes a detection probe, and the detection probe is arranged facing the rotating seat. An extension portion is provided on the outer peripheral wall of the rotating seat. The length direction of the extension portion is consistent with the radial direction of the rotating seat, and an induction sheet corresponding to the detection probe is provided at one end of the extension portion away from the rotating seat.

[0007] Compared with the prior art, the present invention has the following beneficial effects: By inserting the operating head of the operating handle into the operation hole on the rotating seat to combine the operating handle and the operating head, and driving the rotating seat to rotate by rotating the operating handle, and when the rotating seat rotates, the power is transmitted to the driving screw rod to make the driving screw rod rotate, thereby driving the trolley body to move axially along the driving screw rod on the base, so as to realize the opening and closing of the control circuit. During the rotation of the rotating seat, the detection probe of the counter senses the induction sheet on the extension portion once every time the rotating seat rotates one circle. The counter can count the number of rotations of the rotating seat and display it on the display screen, so that the operator can intuitively obtain the current number of rotations of the rotating seat without manual counting. When the count displayed on the display screen reaches the preset number of rotations, the operator stops rotating the operating handle and removes the rotating handle from the rotating seat, which can ensure that the trolley body moves to the working position or the maintenance position while preventing equipment damage or poor contact caused by the trolley body not moving in place. It solves the technical problem of inconvenient operation of the existing switch trolley, produces the technical effects of automatically counting the number of rotations of the operating handle and facilitating the operator to move the switch trolley to the preset position, and avoids equipment damage while reducing the burden on the operator. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a schematic structural diagram of a switch trolley for a high-voltage switch cabinet according to an embodiment of the present invention;

[0009] Figure 2 It is a partial cross-sectional view when the operating handle is inserted into the operation hole in a switch trolley for a high-voltage switch cabinet according to an embodiment of the present invention;

[0010] Figure 3 It is a partial cross-sectional view when the operating handle is pulled out of the operation hole in a switch trolley for a high-voltage switch cabinet according to an embodiment of the present invention;

[0011] Figure 4Partial cross-sectional view of the limiting plate limiting the extension part in the switch trolley of the high-voltage switch cabinet according to an embodiment of the present invention;

[0012] Figure 5 Structural schematic diagram of the operating handle in the switch trolley of the high-voltage switch cabinet according to an embodiment of the present invention.

[0013] In the above-mentioned drawings: 1. Base; 11. Main controller; 12. Counter; 13. Display screen; 14. Detection probe; 15. Guide groove; 16. Guide rail; 17. Accommodating groove; 18. Guide rod; 2. Trolley body; 21. Traveling wheel; 22. Slide block; 3. Driving screw; 31. Driven gear; 4. Rotating seat; 41. Operation hole; 42. Extension part; 43. Induction sheet; 44. Driving gear; 45. Limiting hole; 5. Operating handle; 51. Operating head; 52. Hand-held rod; 53. Rocking rod; 54. Anti-slip sleeve; 6. Mounting seat; 61. Chute; 62. Limiting pin; 63. Limiting spring; 64. Limiting part; 7. Movable plate; 71. Driving spring; 72. Limiting plate; 73. Magnetic attraction block; 8. Electromagnet. Detailed implementation manners

[0014] The technical solutions in the present invention will be further described below with reference to the drawings and embodiments.

[0015] As Figures 1 to 5 shown, an embodiment of the present invention provides a switch trolley for a high-voltage switch cabinet, which is installed inside the switch cabinet and used to realize the opening and closing of a control circuit.

[0016] Please refer to Figure 1 、 Figure 2 and Figure 3The switch trolley of the high-voltage switch cabinet includes a base 1, on which a movable trolley body 2 and a driving screw 3 drivingly connected to the trolley body 2 are provided, and also includes a rotating seat 4 and an operating handle 5, the rotating seat 4 can be rotatably arranged on the base 1 and is drivingly connected to the driving screw 3, the rotating seat 4 is provided with an operating hole 41 and the operating handle 5 has an operating head 51 matched with the operating hole 41, and after the operating head 51 is inserted into the operating hole 41, the operating handle 5 is combined with the rotating seat 4, at this time, the operator rotates the operating handle 5 to drive the rotating seat 4 to rotate, and when the rotating seat 4 rotates, the power is transmitted to the driving screw 3 to rotate the driving screw 3, and the rotation of the driving screw 3 can drive the trolley body 2 to move along the axial direction of the driving screw 3 on the base 1, so that the trolley body 2 can be switched between the working position and the maintenance position, and the opening and closing of the circuit can be controlled. The base 1 is also provided with a main controller 11, a counter 12 and a display screen 13, the counter 12 and the display screen 13 are electrically connected to the main controller 11 respectively, the counter 12 includes a detection probe 14 and the detection probe 14 is arranged toward the rotating seat 4, an extension portion 42 is provided on the outer peripheral wall of the rotating seat 4, the length direction of the extension portion 42 is consistent with the radial direction of the rotating seat 4, and the end of the extension portion 42 away from the rotating seat 4 is provided with a sensing piece 43 corresponding to the detection probe 14, the detection probe 14 senses the sensing piece 43 once for each rotation of the rotating seat 4, at this time, the counter 12 records the number of rotations of the rotating seat 4 increased by one circle, and the data recorded by the counter 12 is displayed on the display screen 13, so that the operator can intuitively obtain the number of rotations of the rotating seat 4, so as to facilitate the operator to control the number of rotations of the rotating seat 4, to ensure that the trolley body 2 moves to the preset position while avoiding the trolley body 2 from moving out of place.

[0017] Specifically, the operation steps for opening and closing the high-voltage switch cabinet switch trolley control circuit provided in this embodiment are as follows: The operator first inserts the operation head 51 on the operation handle 5 into the operation hole 41 on the rotating seat 4. At this time, the operation handle 5 is combined with the operation head 51, and when the operator rotates the operation handle 5, the rotating seat 4 rotates synchronously. As the rotation power of the rotating seat 4 is transmitted to drive the driving screw to drive the driving screw 3 to rotate, the trolley body 2 is driven by the driving screw 3 to move axially on the base 1 along the driving screw 3, so as to move the trolley body 2 from the maintenance position to the working position to close the circuit, or move the trolley body 2 from the working position to the maintenance position to disconnect the circuit, thereby realizing the opening and closing of the control circuit. During the rotation of the rotating seat 4, the detection probe 14 senses the induction piece 43 on the extension part 42 once every time the rotating seat 4 rotates one circle, and at the same time, the count of the counter 12 increases by one. Thus, the number of rotations of the rotating seat 4 can be counted by the counter 12, and the count of the counter 12 is displayed on the display screen 13. The operator can intuitively obtain the current number of rotations of the rotating seat 4 by looking at the count displayed on the display screen 13. When the count displayed on the display screen 13 reaches the preset number of rotations, it means that the trolley body 2 has moved in place. At this time, the operator stops rotating the operation handle 5 and removes the rotating handle from the rotating seat 4 to complete the opening and closing operation of the control circuit. The high-voltage switch cabinet switch trolley provided in this embodiment can automatically count the number of rotations of the operator rotating the rotating seat 4 by operating the operation handle 5, ensuring that the trolley body 2 moves to the working position or the maintenance position while preventing equipment damage or poor contact caused by the trolley body 2 not moving in place, facilitating the operator to move the switch trolley to the preset position, and avoiding equipment damage while reducing the burden on the operator.

[0018] As Figure 1 shown, a connecting seat is provided on the trolley body 2, and a threaded hole matching the driving screw 3 is provided on the connecting seat. By providing the connecting seat on the trolley body 2 and providing the threaded hole on the connecting seat to cooperate with the driving screw 3, the cooperation between the trolley body 2 and the driving screw 3 is ensured to be stable, so that the trolley body 2 moves smoothly on the base 1 when the driving screw 3 rotates.

[0019] As Figure 1As shown, the trolley body 2 is provided with traveling wheels 21, and the base 1 is provided with guide grooves 15 that cooperate with the traveling wheels 21, and the length direction of the guide grooves 15 is consistent with the axial direction of the driving screw 3. The traveling wheels 21 provided on the trolley body 2 are used to reduce the friction between the trolley body 2 and the base 1, thereby reducing the burden on the operator. When the trolley body 2 moves on the base 1, the traveling wheels 21 roll in the guide grooves 15, preventing the trolley body 2 from deviating from the preset direction during movement and affecting the normal closing or opening of the circuit.

[0020] Specifically, two guide rails 16 are provided on the base 1 at intervals. The two guide rails 16 are respectively located on opposite sides of the trolley body 2, and the length direction of the guide rails 16 is consistent with the axial direction of the driving screw 3. Sliders 22 that respectively cooperate with the guide rails 16 are provided on opposite sides of the trolley body 2. The guide rails 16 are used to limit the moving direction of the trolley body 2 on the base 1. The guide rails 16 provided on the base 1 on opposite sides of the trolley body 2 respectively cooperate with the sliders 22 on both sides of the trolley body 2 one by one to improve the stability of the trolley body 2 during movement and prevent the trolley body 2 from tilting and causing the trolley body 2 to be unable to be normally docked.

[0021] Please refer to Figure 1 and Figure 2 , a driving gear 44 is sleeved on the rotating seat 4, and a driven gear 31 is provided at one end of the driving screw 3, and the driven gear 31 meshes with the driving gear 44. When the rotating seat 4 rotates under the drive of the operating handle 5, the driving gear 44 rotates with the movement of the rotating seat 4 and drives the driven gear 31 to rotate. Thus, power can be transmitted to the driving screw 3 through the cooperation of the driving gear 44 and the driven gear 31, ensuring that the driving screw 3 rotates smoothly under the drive of the rotating seat 4, which is beneficial to improving the structural stability of the switch trolley of the high-voltage switchgear.

[0022] Please combine Figure 1 , Figure 2 and Figure 3, a limiting hole 45 communicating with the operation hole 41 is further provided on the rotating seat 4. The limiting hole 45 is coaxially arranged with the operation hole 41. A limiting pin 62 and a limiting spring 63 abutted against the limiting pin 62 are provided on the base 1. The limiting spring 63 drives one end of the limiting pin 62 to pass through the limiting hole 45 and extend into the operation hole 41 to cooperate with the operation hole 41. When the operating head 51 cooperates with the operation hole 41, it abuts against the limiting pin 62 and pushes the limiting pin 62 out of the operation hole 41. When the operating handle 5 is not installed on the rotating seat 4, one end of the limiting pin 62 extends into the operation hole 41 through the limiting hole 45 under the action of the elastic force provided by the limiting spring 63. At this time, the end of the limiting pin 62 cooperates with the operation hole 41 to limit the rotation of the rotating seat 4 relative to the base 1, so as to lock the rotating seat 4 to prevent the rotating seat 4 from rotating unexpectedly and driving the trolley body 2 to move; when the operating head 51 on the operating handle 5 is inserted into the operation hole 41, the operating head 51 pushes the limiting pin 62 out of the operation hole 41 to make the limiting pin 62 retract into the limiting hole 45. At this time, the locking of the rotating seat 4 is released and the limiting spring 63 is further compressed. Rotating the operating handle 5 can drive the rotating seat 4 to act and adjust the position of the trolley body 2; when the trolley body 2 is adjusted in place and the operating handle 5 is removed from the rotating seat 4, the limiting spring 63 returns to its original length and pushes the limiting pin 62 to extend into the operation hole 41 again to cooperate with the operation hole 41, so as to automatically lock the position of the rotating seat 4 again.

[0023] Specifically, an installation seat 6 is provided on the base 1. The installation seat 6 has a chute 61 for accommodating one end of the limiting pin 62 away from the rotating seat 4 and the limiting spring 63. A limiting portion 64 matched with the chute 61 is provided at one end of the limiting pin 62 away from the rotating seat 4. One end of the limiting pin 62 and the limiting spring 63 are respectively arranged in the chute 61 on the installation seat 6, so that the cooperation between the limiting spring 63 and the limiting pin 62 is reliable. The cross section of the limiting portion 64 is square to prevent the limiting pin 62 from rotating in the chute 61 through the cooperation between the limiting portion 64 and the chute 61, ensuring that the limiting pin 62 can enter the operation hole 41 when moving under the drive of the limiting spring 63 and preventing the limiting pin 62 from being misaligned with the operation hole 41.

[0024] Such as Figure 2 And Figure 4As shown, a movable plate 7 that can be lifted and lowered in the vertical direction and a driving spring 71 that abuts against the movable plate 7 and drives the movable plate 7 to rise in the vertical direction are further provided on the base 1. Two vertical limiting plates 72 are provided on the movable plate 7 at intervals, and when the sensing piece 43 is aligned with the detection probe 14, the extension portion 42 is located in the area between the two limiting plates 72. An electromagnet 8 electrically connected to the main controller 11 is further provided on the base 1. The electromagnet 8 is located directly below the movable plate 7, and a magnetic attraction block 73 corresponding to the electromagnet 8 is provided on the movable plate 7. Before inserting the operating handle 5 into the operating hole 41 and rotating the rotating seat 4, the main controller 11 is used to activate the electromagnet 8 so that the electromagnet 8 attracts the magnetic attraction block 73 and drives the movable plate 7 to descend in the vertical direction. At this time, the limiting plate 72 descends under the drive of the movable plate 7, so that the limiting plate 72 will not block the movement of the extension portion 42 when the rotating seat 4 rotates, and at this time the driving spring 71 is further compressed; when the count of the counter 12 reaches the preset number of turns as the rotating seat 4 rotates, the main controller 11 controls the electromagnet 8 to turn off. At this time, the driving spring 71 returns to its original length and drives the movable plate 7 to rise in the vertical direction by the elastic force provided by the driving spring 71, so that the extension portion 42 is restricted between the two limiting plates 72, thereby preventing the rotating seat 4 from continuing to rotate and preventing the operator from making an operation error that causes the rotating seat 4 to continue to rotate after rotating the preset number of turns and causing equipment damage.

[0025] Specifically, a receiving groove 17 for receiving the movable plate 7, the driving spring 71 and the electromagnet 8 is further provided on the base 1. A vertical guide rod 18 is provided in the receiving groove 17, and a guide hole matching the guide rod 18 is provided on the movable plate 7. The driving spring 71 is sleeved on the guide rod 18. By providing the receiving groove 17 on the base 1 to receive the movable plate 7, the driving spring 71 and the electromagnet 8, the movable plate 7 and other components are protected in the receiving groove 17, and a guide rod 18 for guiding the movable plate 7 to move in the vertical direction is provided in the receiving groove 17. A guide hole matching the guide rod 18 is provided on the movable plate 7 to prevent the movable plate 7 from deviating from the preset direction when moving, and to ensure that the extension portion 42 stably enters the area between the two limiting plates 72 when the movable plate 7 moves up and down.

[0026] Please refer to Figure 1 and Figure 5, the operating handle 5 further includes a hand-held rod 52 and a rocking rod 53 that are sequentially connected to the operating head 51. The rocking rod 53 is U-shaped, and rotatable anti-slip sleeves 54 are respectively sleeved on the hand-held rod 52 and the rocking rod 53. The operating handle 5 is composed of the operating head 51, the hand-held rod 52, and the rocking rod 53 that are sequentially connected. When an operator uses the operating handle 5, one hand tightly holds the anti-slip sleeve 54 on the hand-held rod 52, and the other hand tightly holds the anti-slip sleeve 54 on the rocking rod 53. After inserting the operating head 51 into the operating hole 41, rocking the rocking rod 53 can rotate the operating handle 5, which is convenient for the operator to use and can reduce the labor intensity of the operator.

[0027] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the purpose and scope of the technical solutions of the present invention, and they should all be covered by the scope of the claims of the present invention.

Claims

1. A switch trolley for a high-voltage switch cabinet, comprising a base, on which a movable trolley body and a driving screw drivingly connected to the trolley body are arranged, characterized in that: It also includes a rotating seat and an operating handle, the rotating seat can be rotatably set on the base and is drivingly connected to the driving screw, the rotating seat is provided with an operating hole and the operating handle has an operating head matching the operating hole, the base is also provided with a main controller, a counter and a display screen, the counter and the display screen are electrically connected to the main controller respectively, the counter includes a detection probe and the detection probe is arranged toward the rotating seat, an extension portion is provided on the outer peripheral wall of the rotating seat, the length direction of the extension portion is consistent with the radial direction of the rotating seat, and an induction sheet corresponding to the detection probe is provided at the end of the extension portion away from the rotating seat.

2. A high-voltage switch cabinet switch trolley according to claim 1, characterized in that: The trolley body is provided with a connecting seat, and the connecting seat is provided with a threaded hole matched with the driving screw.

3. A high-voltage switch cabinet switch trolley according to claim 1, characterized in that: The trolley body is provided with a running wheel, the base is provided with a guide groove matched with the running wheel, and the length direction of the guide groove is consistent with the axial direction of the driving screw.

4. A high-voltage switch cabinet switch trolley according to claim 1, characterized in that: Two guide rails are arranged on the base at intervals, and the two guide rails are respectively located on opposite sides of the trolley body and the length direction of the guide rails is consistent with the axial direction of the driving screw. Slide blocks corresponding to the guide rails are respectively arranged on opposite sides of the trolley body.

5. A high-voltage switch cabinet switch trolley as claimed in claim 1, characterized in that: A driving gear is sleeved on the rotating seat, a driven gear is provided at one end of the driving screw rod, and the driven gear is meshed with the driving gear.

6. A high-voltage switch cabinet switch trolley according to claim 1, characterized in that: The rotating seat is also provided with a limit hole connected with the operating hole, and the limit hole is coaxially arranged with the operating hole. The base is provided with a limit pin and a limit spring abutting against the limit pin. The limit spring drives one end of the limit pin to pass through the limit hole and extend into the operating hole to cooperate with the operating hole. When the operating head cooperates with the operating hole, it abuts against the limit pin and pushes the limit pin out of the operating hole.

7. A high-voltage switch cabinet switch trolley as claimed in claim 6, characterized in that: A mounting seat is provided on the base, and the mounting seat has a slide groove for accommodating one end of the limit pin away from the rotating seat and the limit spring, and one end of the limit pin away from the rotating seat is provided with a limit portion matching the slide groove.

8. A high-voltage switch cabinet switch trolley as claimed in claim 1, characterized in that: The base is also provided with a movable plate that can be lifted and lowered in a vertical direction and a driving spring that abuts against the movable plate and drives the movable plate to rise in the vertical direction. Two vertical limit plates are arranged on the movable plate at intervals, and when the sensing sheet is aligned with the detection probe, the extension portion is located in the area between the two limit plates. The base is also provided with an electromagnet electrically connected to the main controller, the electromagnet is located directly below the movable plate, and a magnetic suction block corresponding to the electromagnet is provided on the movable plate.

9. A high-voltage switch cabinet switch trolley as claimed in claim 8, characterized in that: The base is also provided with a receiving groove for accommodating the movable plate, the driving spring and the electromagnet, a vertical guide rod is provided in the receiving groove and a guide hole matching with the guide rod is provided on the movable plate, and the driving spring is sleeved on the guide rod.

10. A switch trolley for a high-voltage switch cabinet as claimed in claim 1, characterized in that: The operating handle also includes a hand-held rod and a rocking rod which are sequentially connected to the operating head. The rocking rod is U-shaped and a rotatable anti-slip sleeve is respectively provided on the hand-held rod and the rocking rod.

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