Lifting circuit breaker trolley

Abstract

The present invention provides a lifting circuit breaker trolley, which belongs to the technical field of substation equipment maintenance. The lifting circuit breaker trolley includes a main frame; a base plate, which is fixedly connected to the upper end of the main frame and has a rectangular groove on the upper end of the base plate; and a lifting mechanism, which includes a rotating rod, a third half gear, a gear column, a mounting plate and a circuit breaker. The rotating rod is rotatably connected to the side end of the base plate, the third half gear is fixedly connected to the circumferential surface of the rotating rod, the gear column is slidably connected in the rectangular groove, the gear column and the third half gear are meshed, and the mounting plate is fixedly connected to the upper end of the gear column. By providing the lifting mechanism, after the circuit breaker is connected, the third half gear and the gear column can be better meshed by the rotation of the rotating rod, so that the circuit breaker can better perform the lifting function, so that the staff can better ensure its use effect when using it.

Description

Technical Field

[0001] The invention belongs to the technical field of maintenance of power transformation equipment, and in particular relates to a lifting type circuit breaker trolley. Background Art

[0002] A circuit breaker is a switching device capable of closing, carrying, and interrupting current under normal circuit conditions, and closing, carrying, and interrupting current under abnormal circuit conditions within a specified timeframe. Circuit breakers are categorized as high-voltage and low-voltage based on their scope of use. The distinction between high and low voltage is somewhat ambiguous, with devices above 3kV generally considered high-voltage. Circuit breakers are used to distribute electrical energy, infrequently start asynchronous motors, and protect power lines and motors. They automatically disconnect circuits in the event of severe overloads, short circuits, or undervoltage faults. Their functionality is equivalent to a combination of a fuse-type switch and an over- and under-voltage relay. Furthermore, interrupting fault current generally requires no component changes. They have gained widespread application. Power distribution is a crucial link in the generation, transmission, and use of electricity. Power distribution systems include transformers and various high- and low-voltage electrical equipment. Low-voltage circuit breakers are widely used.

[0003] In the prior art, during the maintenance and installation of high and low voltage circuits, it is often necessary to distribute electrical energy through circuit breakers. However, in the prior art, when using the circuit breakers, the circuit breakers are often not able to be moved and raised well, which makes the maintenance time long and inconvenient for workers to install and repair. Summary of the Invention

[0004] The purpose of the present invention is to provide a lifting circuit breaker trolley, which aims to solve the problem that the circuit breaker in the prior art is often unable to be moved and lifted well during use, resulting in a long maintenance time and inconvenience for workers to install and repair.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] Lifting circuit breaker trolley, including:

[0007] Main frame;

[0008] A bottom plate, the bottom plate is fixedly connected to the upper end of the main frame, and a rectangular groove is formed on the upper end of the bottom plate;

[0009] as well as

[0010] The lifting mechanism includes a rotating rod, a third half gear, a gear column, a mounting plate and a lifting seat. The rotating rod is rotatably connected to the side end of the base plate, the third half gear is fixedly connected to the circumferential surface of the rotating rod, the gear column is slidably connected in the rectangular groove, the gear column and the third half gear are meshed, the mounting plate is fixedly connected to the upper end of the gear column, and the lifting seat is threadedly connected to the upper end of the mounting plate by a bolt.

[0011] As a preferred solution of the present invention, a first gear is fixedly connected to the circumferential surface of the rotating rod, a second gear is rotatably connected to the side end of the bottom plate, and a rotating handle is fixedly connected to the side end of the second gear.

[0012] As a preferred solution of the present invention, the side end of the rotating rod is fixedly connected to a ratchet, the side end of the base plate is threadedly connected to a shell via a bolt, the side end of the shell is rotatably connected to a ratchet via a rotating shaft, and the ratchet and ratchet are intermittently engaged.

[0013] As a preferred solution of the present invention, the upper end of the main frame is fixedly connected to a pull rod, the lower end of the main frame is fixedly connected to a base plate, and the four corners of the lower end of the base plate are fixedly connected to universal wheels.

[0014] As a preferred solution of the present invention, the side end of the lifting seat is fixedly connected to an insulating cylinder, and the side end of the insulating cylinder is fixedly connected to a contact arm.

[0015] As a preferred solution of the present invention, a rectangular plate is fixedly connected to the lower end of the gear column, and a rubber ring is provided on the circumferential surface of the pulling rod.

[0016] As a preferred solution of the present invention, the insulating cylinder includes an insulating outer cylinder, an upper fixing sleeve sleeved on the upper end of the outer cylinder, a lower fixing sleeve sleeved on the lower end of the outer cylinder, an upper conductive rod vertically arranged in the outer cylinder and fixed on the upper fixing sleeve, and a lower conductive rod vertically arranged in the outer cylinder and threadedly matched with the lower fixing sleeve; the lower conductive rod is always energized; the ends of the upper conductive rod and the lower conductive rod are opposite; the upper contact arm penetrates into the insulating cylinder from the upper side surface of the insulating cylinder and is fixedly connected to the upper conductive rod and electrically contacts it; the lower contact arm penetrates into the insulating cylinder from the lower side surface of the insulating cylinder and is slidably sleeved and electrically contacts it with the lower conductive rod; the An insulating inner cylinder is provided on the outer sliding sleeve of the upper part of the lower conductive rod; the inner cylinder is filled with electrorheological fluid; a plurality of linkage plates are provided on the outer circumference of the upper end of the lower conductive rod to diverge outward; a plurality of electrode drive plates are provided on the inner wall of the inner cylinder; the electrode drive plates are grounded through a switchable circuit; the lower conductive rod slides upward and seals to penetrate the inner cylinder; a through hole is provided at the upper end of the inner cylinder corresponding to the lower conductive rod; an outer rack is provided on the outer ring of the inner cylinder in the axial direction, and a spur gear is engaged with the outer rack; a servo motor provided on the outside of the outer cylinder drives the inner cylinder to rotate through the spur gear.

[0017] As a preferred solution of the present invention, a liquid pipe is provided on the upper portion of the inner cylinder; the liquid pipe is connected to the outside of the outer cylinder; and the electrorheological fluid is pumped into the inner cylinder through the liquid pipe.

[0018] As a preferred solution of the present invention, the circuit breaking working method of the insulating cylinder is:

[0019] ① When power is cut off, the ground of the electrode drive plate is connected, an electric field is formed between the lower conductive rod and the electrode drive plate, and the electrorheological fluid is converted into a solid state under the action of the electric field;

[0020] ② The servo motor drives the spur gear to rotate, which in turn drives the inner cylinder to rotate via the external rack. The inner cylinder drives the lower conductive rod to rotate via the electrode drive plate, solid-state electrorheological fluid, and linkage plate. Because the lower conductive rod is threaded with the fixed sleeve, the rotation of the lower conductive rod causes it to move downward under the action of the thread, breaking contact with the upper conductive rod.

[0021] ③ When the lower conductive rod moves down more than a certain distance, the grounding line of the electrode drive plate is disconnected, the electrorheological fluid loses the electric field effect and turns into liquid, immersing the top of the lower conductive rod and extinguishing the arc;

[0022] ④ After the arc is extinguished, you can choose to extract the electrorheological fluid and then pull out the trolley. If you choose to extract the electrorheological fluid, you need to re-pump the electrorheological fluid after pushing the trolley back. Then, connect the ground of the electrode drive plate to form an electric field between the lower conductive rod and the electrode drive plate again. The electrorheological fluid is converted back into a solid state under the action of the electric field.

[0023] ⑤ The servo motor drives the spur gear in reverse, which drives the inner cylinder to rotate through the outer rack. The inner cylinder drives the lower conductive rod to rotate through the electrode drive plate, solid-state electrorheological fluid, and linkage plate, causing the lower conductive rod to move upward and contact the upper conductive rod to energize.

[0024] ⑥ Disconnect the ground circuit of the electrode driver again, and optionally withdraw the electrorheological fluid again.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] 1. In this solution, the lifting mechanism is provided so that after the lifting seat is connected, the third half gear and the gear column can be better engaged by the rotation of the rotating rod, so that the lifting seat can better perform the lifting function, thereby ensuring its use effect when the staff is using it.

[0027] 2. In this solution, by providing a pull rod at the upper end of the main frame and a universal wheel fixedly connected to the lower end of the main frame, when the lifting seat needs to be moved, the device can be better moved through the pull rod via the universal wheel, so that the lifting seat can better facilitate the position movement function when in use.

[0028] 3. In this solution, the circuit-breaking structure is sealed in the insulating cylinder, and the conductive rods are not exposed. The on-off switching process is carried out indirectly. The circuit-breaking structure is highly integrated, and the modular installation and on-off circuit functions are exercised, which is not only convenient for installation or replacement, but also can effectively ensure the safety of the on-off circuit process.

[0029] 4. In this solution, the solid-liquid transformation characteristics of the electrorheological fluid are utilized to simultaneously realize the dual functions of transmission medium and auxiliary arc extinguishing, which not only simplifies the transmission mechanism, but also has good arc extinguishing effect, low manufacturing cost, is not prone to failure and damage, and has a long service life; the electrorheological fluid is transformed into a solid state under the action of the electric field, and acts as a transmission medium to drive the lower conductive rod to rotate, thereby causing it to move up and down to realize electrical connection and disconnection with the upper conductive rod, and when the upper and lower conductive rods are disconnected, it can be transformed into a liquid state again, and the height of the lower conductive rod after moving downward is utilized to immerse the upper end face of the lower conductive rod, thereby realizing liquid arc extinguishing. Compared with vacuum arc extinguishing, the arc extinguishing effect is stronger, and it can also absorb heat to cause the lower conductive rod to cool down, reduce its aging caused by the arc, and reduce the phenomenon of metal evaporation of the lower conductive rod at high temperature caused by the arc, thereby making it have a longer service life. Compared with vacuum circuit breakers, the manufacturing cost and processing cost of the device are significantly reduced, and there is no need to worry about damage and leakage of vacuum circuit breakers. It can adapt to harsh environments. After breaking the circuit in this way, it is equivalent to achieving oil sealing through insulating oil, which can avoid the adverse effects of humid air and other conditions, improve safety and avoid breakdown due to humidity. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0031] Figure 1 This is a first perspective stereogram of the present invention;

[0032] Figure 2 is a second perspective stereogram of the present invention;

[0033] Figure 3 It is a three-dimensional exploded view of the present invention;

[0034] Figure 4 For the present invention Figure 3 A partial enlarged view of the

[0035] Figure 5Schematic diagram of the insulating tube circuit breaker structure of the present invention in a connected state;

[0036] Figure 6 It is a schematic diagram of the insulating tube circuit breaker structure of the present invention in the disconnected state.

[0037] In the figure: 1. Main frame; 2. Bottom plate; 3. Universal wheel; 4. Pull rod; 5. Rectangular slot; 6. Rotating rod; 7. Third half gear; 8. Gear column; 9. First gear; 10. Second gear; 11. Rotating handle; 12. Mounting plate; 13. Housing; 14. Ratchet; 15. Ratchet teeth; 16. Lifting seat; 17. Insulating cylinder; 171. Outer cylinder; 172. Upper fixing sleeve; 173. Lower fixing sleeve; 174. Upper conductive rod; 175. Lower conductive rod; 176. Inner cylinder; 177. Electrorheological fluid; 178. Spur gear; 179. Servo motor; 180. Linkage plate; 181. Electrode drive plate; 18. Contact arm. DETAILED DESCRIPTION

[0038] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0039] In the description of the present invention, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0040] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "provided with," "mounted / connected," and "connected" should be understood in a broad sense. For example, "connected" can mean a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be internal communication between two components. Those skilled in the art will be able to understand the specific meanings of the above terms in the present invention in specific circumstances.

[0041] Example 1

[0042] See also Figure 1-4 , the present invention provides the following technical solutions:

[0043] Lifting circuit breaker trolley, including:

[0044] Main frame 1;

[0045] Bottom plate 2, bottom plate 2 is fixedly connected to the upper end of main frame 1, and a rectangular groove 5 is opened at the upper end of bottom plate 2;

[0046] as well as

[0047] The lifting mechanism includes a rotating rod 6, a third half gear 7, a gear column 8, a mounting plate 12 and a lifting seat 16. The rotating rod 6 is rotatably connected to the side end of the base plate 2, the third half gear 7 is fixedly connected to the circumferential surface of the rotating rod 6, the gear column 8 is slidably connected to the rectangular groove 5, the gear column 8 and the third half gear 7 are meshed, the mounting plate 12 is fixedly connected to the upper end of the gear column 8, and the lifting seat 16 is threadedly connected to the upper end of the mounting plate 12 by a bolt.

[0048] In a specific embodiment of the present invention, the main frame 1 serves to fix the base plate 2 and connect the universal wheel 3. The base plate 2 serves to better place the gear column 8 after the rectangular groove 5 is opened on the upper end of the base plate 2. The lifting mechanism is provided so that after the lifting seat 16 is connected, the third half gear 7 and the gear column 8 can be better engaged by the rotation of the rotating rod 6, so that the lifting seat 16 can better perform the lifting function, so that when the staff is in use, the use effect can be better guaranteed. The rotating rod 6 serves to fix the third half gear 7, and the third half gear 7 serves to achieve intermittent engagement with the gear column 8. The gear column 8 serves to better ensure the connection between the lifting seat 16 and the mounting plate 12 after fixing the mounting plate 12. The lifting seat 16, the third half gear 7 and the gear column 8 are each provided with two, and the two third half gears 7 have the same rotation direction. The specific use of the lifting seat 16 and the effect of its use are prior art to those skilled in the art and will not be described in detail herein.

[0049] For details, please refer to Figure 3 and Figure 4 The circumferential surface of the rotating rod 6 is fixedly connected to the first gear 9, the side end of the bottom plate 2 is rotatably connected to the second gear 10, and the side end of the second gear 10 is fixedly connected to the rotating handle 11.

[0050] In this embodiment: the first gear 9 is used to achieve meshing with the second gear 10, and the second gear 10 is used to achieve that when the position of the gear column 8 needs to be slid, the second gear 10 can be rotated better by rotating the handle 11, so that the second gear 10 and the first gear 9 can rotate better, wherein the first gear 9 is provided with two.

[0051] For details, please refer to Figure 3 The side end of the rotating rod 6 is fixedly connected to the ratchet 14, the side end of the base plate 2 is threadedly connected to the housing 13 through a bolt, and the side end of the housing 13 is rotatably connected to the ratchet 15 through a rotating shaft, and the ratchet 15 and the ratchet 14 are intermittently meshed.

[0052] In this embodiment, the ratchet 14 serves to fix the rotating rod 6, and the housing 13 serves to intermittently engage with the ratchet 14, thereby ensuring that the position of the rotating rod 6 can be better limited after the rotating handle 11 stops rotating. The specific engagement between the ratchet 14 and the ratchet teeth 15 and the release of the limit are prior art to professionals in this field and will not be described in detail in this article.

[0053] For details, please refer to Figure 1 and Figure 3 The upper end of the main frame 1 is fixedly connected to a pull rod 4, the lower end of the main frame 1 is fixedly connected to a base plate 2, and the four corners of the lower end of the base plate 2 are fixedly connected to universal wheels 3.

[0054] In this embodiment, the pull rod 4 is used to connect the main frame 1, so that the lifting seat 16 can be better pushed by the pull rod 4 when it needs to be moved, and the universal wheel 3 is used to better ensure the movement function of the device when it needs to be moved.

[0055] For details, please refer to Figure 1-Figure 3 The side end of the lifting seat 16 is fixedly connected to the insulating cylinder 17 , and the side end of the insulating cylinder 17 is fixedly connected to the contact arm 18 .

[0056] In this embodiment, the insulating tube 17 serves to connect the contact arm 18, and the contact arm 18 serves to connect with external components. The specific connection between the insulating tube 17 and the contact arm 18 and how to achieve their use effect are prior arts for professionals in this field and will not be described in detail in this article.

[0057] For details, please refer to Figure 3 The lower end of the tooth column 8 is fixedly connected with a rectangular plate, and the circumferential surface of the pull rod 4 is provided with a rubber ring.

[0058] In this embodiment, a rectangular plate is fixed to the lower end of the gear column 8 so that the structural stability of the gear column 8 can be better ensured when the gear column 8 is matched and meshed with the third half gear 7. A rubber ring is provided on the surface of the pull rod 4 so that the comfort of use of the staff can be better improved.

[0059] The working principle and use process of the present invention are as follows: first, the lifting seat 16 and the mounting plate 12 are connected by bolts. When the lifting seat 16 needs to be raised or lowered, the rotating handle 11 can be rotated. After the rotating handle 11 is rotated, the second gear 10 and the first gear 9 are meshed, and the rotating rod 6 rotates with the third half gear 7. At this time, the third half gear 7 and the gear column 8 are meshed. At this time, the gear column 8 is raised or lowered. At this time, the mounting plate 12 enables the fixed lifting seat 16 to complete the lifting and lowering. When the rotating handle 11 is rotated, the ratchet 14 and the ratchet 15 are intermittently meshed, thereby ensuring that the rotating handle 11 is used to rotate the rotating rod 6 is fixed. When it is necessary to lower, the ratchet 15 is pulled to separate the ratchet 14 and the ratchet 15. At this time, the handle 11 can be rotated in the opposite direction to lower the lifting seat 16. When it is necessary to move the position, the pulling rod 4 can be pulled or pushed and moved through the universal wheel 3 fixedly connected to the lower end of the main frame 1. The lifting mechanism is set so that after the lifting seat 16 is connected, the third half gear 7 and the tooth column 8 can be better engaged through the rotation of the rotating rod 6, so that the lifting seat 16 can better perform the lifting function, thereby better ensuring its use effect when the staff is in use.

[0060] For further information, see Figure 5 and 6 In this embodiment, the circuit breaker mechanism of the insulating cylinder 17 is redesigned, specifically: the insulating cylinder 17 includes an insulating outer cylinder 171, an upper fixing sleeve 172 sleeved on the upper end of the outer cylinder 171, a lower fixing sleeve 173 sleeved on the lower end of the outer cylinder 171, an upper conductive rod 174 vertically arranged in the outer cylinder 171 and fixed on the upper fixing sleeve 172, and a lower conductive rod 175 vertically arranged in the outer cylinder 171 and threadedly engaged with the lower fixing sleeve 173; the lower conductive rod 175 is always charged; the ends of the upper conductive rod 174 and the lower conductive rod 175 are opposite to each other; the upper contact arm 18 penetrates into the insulating cylinder 17 from the upper side of the insulating cylinder 17 and is fixedly connected to the upper conductive rod 174 and electrically contacts; the lower contact arm 18 penetrates into the insulating cylinder 17 from the lower side of the insulating cylinder 17 The inner and lower conductive rods 175 are slidably sleeved and electrically contacted; an insulating inner cylinder 176 is slidably sleeved on the outer part of the upper part of the lower conductive rod 175; the inner cylinder 176 is filled with an electrorheological fluid 177; a number of linkage plates 180 are provided on the outer circumference of the upper end of the lower conductive rod 175 to diverge outward; a number of electrode drive plates 181 are provided on the inner wall of the inner cylinder 176; the electrode drive plates 181 are grounded through a switchable circuit; the lower conductive rod 175 slides upward and seals to penetrate the inner cylinder 176; a through hole is opened at the upper end of the inner cylinder 176 corresponding to the lower conductive rod 175; an outer rack is provided on the outer ring of the inner cylinder 176 in the axial direction, and a spur gear 178 is engaged with the outer rack; a servo motor 179 arranged outside the outer cylinder 171 drives the inner cylinder 176 to rotate through the spur gear 178.

[0061] A liquid pipe is provided on the upper portion of the inner cylinder 176 ; the liquid pipe is connected to the outside of the outer cylinder 171 ; and the electrorheological fluid 177 is pumped into the inner cylinder 176 through the liquid pipe.

[0062] The working method of the circuit breaker mechanism is:

[0063] ① When power is cut off, the ground of the electrode driving plate 181 is connected, an electric field is formed between the lower conductive rod 175 and the electrode driving plate 181, and the electrorheological fluid 177 is converted into a solid state under the action of the electric field;

[0064] ② The servo motor 179 drives the spur gear 178 to rotate, which in turn drives the inner cylinder 176 to rotate via the external rack. The inner cylinder 176 drives the lower conductive rod 175 to rotate via the electrode drive plate 181, the solid electrorheological fluid 177, and the linkage plate 180. Because the lower conductive rod 175 is threadedly engaged with the fixed sleeve 173, the rotation of the lower conductive rod 175 causes it to move downward under the action of the threads, releasing it from contact with the upper conductive rod 174.

[0065] ③ When the lower conductive rod 175 moves downward more than a certain distance, the grounding line of the electrode driving plate 181 is disconnected, and the electrorheological fluid 177 loses the electric field effect and turns into liquid, immersing the top of the lower conductive rod 175 and thus extinguishing the arc;

[0066] ④ After the arc is extinguished, you can choose to withdraw the electrorheological fluid 177 and then pull out the trolley. If you choose to withdraw the electrorheological fluid 177, you need to re-pump the electrorheological fluid 177 after pushing the trolley back. Then, connect the ground of the electrode drive plate 181, so that an electric field is formed between the lower conductive rod 175 and the electrode drive plate 181 again. The electrorheological fluid 177 is converted back into a solid state under the action of the electric field.

[0067] ⑤ The servo motor 179 drives the spur gear 178 in reverse to rotate, and the spur gear 178 drives the inner cylinder 176 to rotate through the outer rack. The inner cylinder 176 drives the lower conductive rod 175 to rotate through the electrode drive plate 181, the solid electrorheological fluid 177, and the linkage plate 180, causing the lower conductive rod 175 to move upward and contact the upper conductive rod 174 to energize.

[0068] ⑥ Disconnect the grounding circuit of the electrode driving plate 181 again, and optionally withdraw the electrorheological fluid 177 again.

[0069] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or substitute equivalents for some of the technical features. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. Lifting type circuit breaker trolley, characterized in that: include: Main frame (1); A bottom plate (2), the bottom plate (2) is fixedly connected to the upper end of the main frame (1), and a rectangular groove (5) is formed at the upper end of the bottom plate (2); as well as A lifting mechanism, the lifting mechanism comprising a rotating rod (6), a third half gear (7), a tooth column (8), a mounting plate (12) and a lifting seat (16), the rotating rod (6) being rotatably connected to the side end of the base plate (2), the third half gear (7) being fixedly connected to the circumferential surface of the rotating rod (6), the tooth column (8) being slidably connected in the rectangular groove (5), the tooth column (8) and the third half gear (7) being meshed, the mounting plate (12) being fixedly connected to the upper end of the tooth column (8), and the lifting seat (16) being threadedly connected to the upper end of the mounting plate (12) by a bolt; The side end of the rotating rod (6) is fixedly connected to a ratchet (14), the side end of the bottom plate (2) is threadedly connected to a housing (13) via a bolt, the side end of the housing (13) is rotatably connected to a ratchet (15) via a rotating shaft, and the ratchet (15) and the ratchet (14) are intermittently meshed; The side end of the lifting seat (16) is fixedly connected to an insulating cylinder (17), and the side end of the insulating cylinder (17) is fixedly connected to a contact arm (18); the insulating cylinder (17) comprises an insulating outer cylinder (171), an upper fixing sleeve (172) sleeved on the upper end of the outer cylinder (171), a lower fixing sleeve (173) sleeved on the lower end of the outer cylinder (171), and an upper conductive rod (174) vertically arranged in the outer cylinder (171) and fixed on the upper fixing sleeve (172). , a lower conductive rod (175) vertically arranged in the outer cylinder (171) and threadedly matched with the lower fixed sleeve (173); the lower conductive rod (175) is always charged; the ends of the upper conductive rod (174) and the lower conductive rod (175) are opposite to each other; the upper contact arm (18) is inserted into the insulating cylinder (17) from the upper side of the insulating cylinder (17) and is fixedly connected to the upper conductive rod (174) and electrically contacted; the lower contact arm (18) is inserted into the insulating cylinder (17) from the lower side of the insulating cylinder (17) 7) is slidably sleeved with the lower conductive rod (175) and is in electrical contact; an insulating inner cylinder (176) is slidably sleeved on the outer portion of the upper portion of the lower conductive rod (175); the inner cylinder (176) is filled with an electrorheological fluid (177); a plurality of linkage pieces (180) are provided on the outer circumference of the upper end of the lower conductive rod (175); a plurality of electrode drive pieces (181) are provided on the inner wall of the inner cylinder (176); the electrode drive pieces (181) are switched on and off by The circuit is grounded; the lower conductive rod (175) slides upward and seals to penetrate the inner cylinder (176); a through hole is provided at the upper end of the inner cylinder (176) corresponding to the lower conductive rod (175); an outer rack is provided on the outer ring of the inner cylinder (176) along the axial direction, and a spur gear (178) is engaged with the outer rack; a servo motor (179) arranged outside the outer cylinder (171) drives the inner cylinder (176) to rotate through the spur gear (178); A liquid pipe is provided on the upper portion of the inner cylinder (176); the liquid pipe is connected to the outside of the outer cylinder (171); and the electrorheological fluid (177) is pumped into the inner cylinder (176) through the liquid pipe.

2. The lifting circuit breaker trolley according to claim 1, characterized in that: The circumferential surface of the rotating rod (6) is fixedly connected to a first gear (9), the side end of the bottom plate (2) is rotatably connected to a second gear (10), and the side end of the second gear (10) is fixedly connected to a rotating handle (11).

3. The lifting circuit breaker trolley according to claim 1, characterized in that: The upper end of the main frame (1) is fixedly connected to a pulling rod (4), the lower end of the main frame (1) is fixedly connected to a base plate (2), and the four corners of the lower end of the base plate (2) are fixedly connected to universal wheels (3).

4. The lifting type circuit breaker trolley according to claim 3, characterized in that: The lower end of the tooth column (8) is fixedly connected to a rectangular plate, and the circumferential surface of the pulling rod (4) is provided with a rubber ring.

5. The lifting type circuit breaker trolley according to claim 1, characterized in that: The circuit breaking working method of the insulating cylinder is as follows: ① When power is cut off, the ground of the electrode driving plate (181) is connected, an electric field is formed between the lower conductive rod (175) and the electrode driving plate (181), and the electrorheological fluid (177) is converted into a solid state under the action of the electric field; ② The servo motor (179) drives the spur gear (178) to rotate, and the spur gear (178) drives the inner cylinder (176) to rotate through the outer rack; the inner cylinder (176) drives the lower conductive rod (175) to rotate through the electrode driving piece (181), the solid electrorheological fluid (177) and the linkage piece (180); because the lower conductive rod (175) is threadedly matched with the fixed sleeve (173), the rotation of the lower conductive rod (175) causes it to move downward under the action of the thread, thereby releasing contact with the upper conductive rod (174); ③ When the lower conductive rod (175) moves downward over a certain distance, the grounding circuit of the electrode driving plate (181) is disconnected, and the electrorheological fluid (177) loses the electric field effect and turns into liquid, which immerses the top of the lower conductive rod (175) and extinguishes the arc; ④ After the arc is extinguished, the electrorheological fluid (177) can be drawn out and then the trolley can be pulled out. If the electrorheological fluid (177) is drawn out, the electrorheological fluid (177) needs to be re-pumped in after the trolley is pushed back, and then the grounding of the electrode driving piece (181) is connected, so that an electric field is formed again between the lower conductive rod (175) and the electrode driving piece (181), and the electrorheological fluid (177) is converted back into a solid state under the action of the electric field. ⑤ The servo motor (179) drives the spur gear (178) in reverse to rotate, and the spur gear (178) drives the inner cylinder (176) to rotate through the outer rack; the inner cylinder (176) drives the lower conductive rod (175) to rotate through the electrode driving piece (181), the solid electrorheological fluid (177) and the linkage piece (180); the lower conductive rod (175) moves upward and contacts the upper conductive rod (174) to energize; ⑥ Disconnect the grounding circuit of the electrode drive plate (181) again, and optionally withdraw the electrorheological fluid (177) again.

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