Portable operation and maintenance trolley

Abstract

The invention discloses an operation and maintenance trolley convenient to carry, and relates to the technical field of electrical equipment overhaul, a supporting unit comprises a supporting bottom frame, a stand column is hinged to the inner wall of the supporting bottom frame, and an inclined supporting rod used for supporting the stand column is hinged to the side wall of the supporting bottom frame; the end, away from the stand column, of the vertical rod is connected with a transverse rod perpendicular to the long axis direction of the stand column. One end of the stabilizing unit is connected with the cross rod, and the other end of the stabilizing unit is connected with the inclined supporting rod; the lifting unit comprises a winch and a steel wire rope wound on the outer wall of a winch rotating shaft; the winch retracts and releases the steel wire rope so as to lift the middle-mounted vacuum circuit breaker; through the cooperation between the supporting unit and the lifting unit, enough moving space can be provided for the movement of the mid-set vacuum circuit breaker, and the lifting unit is arranged to expose the bottom of the mid-set vacuum circuit breaker in a labor-saving manner, so that the maintenance personnel can operate the mid-set vacuum circuit breaker more conveniently.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of power equipment maintenance, and in particular to a portable operation and maintenance trolley. BACKGROUND

[0002] In the operation and maintenance of the middle-mounted switch cabinet in the 10kV room of the substation, a transfer trolley is frequently used to move the middle-mounted vacuum circuit breaker (about 200KG in weight) out of the cabinet to complete the tasks such as bus transfer and maintenance.

[0003] Although the existing transfer trolley can carry the circuit breaker, it has significant design defects. First, because the number of transfer trolleys is limited, the operator needs to manually lift the circuit breaker off the transfer trolley, which usually requires more than 5 people to cooperate, and the labor intensity is extremely great. Moreover, there is a lack of effective manual gripping points, which poses safety hazards such as personnel slipping and heavy objects falling, especially for female operators. Second, the existing equipment is bulky and cannot be folded, which cannot be adapted to the closed pickup truck cargo box commonly used by operation and maintenance personnel, resulting in low transportation efficiency across sites and restricting the demand for rapid response. In addition, the traditional operation relies on pure manual handling and lacks mechanical assistance for the entire device, which cannot be operated by a single person and is difficult to respond flexibly to emergency conditions in a power-off environment. SUMMARY

[0004] Therefore, the technical problem to be solved by the present application is that the existing middle-mounted vacuum circuit breaker needs to consume a lot of physical labor of the workers to move the circuit breaker position during the transfer process, and there is a great safety hazard problem during the maintenance process.

[0005] The above technical problems are solved by the following technical solutions: the present application provides a portable operation and maintenance trolley, which comprises a supporting unit, a supporting chassis, a vertical column hinged to the inner wall of the supporting chassis, and an inclined support rod for supporting the vertical column hinged to the side wall of the supporting chassis; the vertical column is connected with a vertical rod along the long axis direction, and the end of the vertical rod away from the vertical column is connected with a horizontal rod perpendicular to the long axis direction of the vertical column; a stabilizing unit connected at one end to the horizontal rod and at the other end to the inclined support rod; The stabilizing unit, the vertical column and the horizontal rod form a triangular structure, thereby realizing the stability of the trolley structure; a lifting unit comprising a winch and a steel wire rope wound on the outer wall of the winch shaft; the winch retracts and releases the steel wire rope, thereby lifting the position of the middle-mounted vacuum circuit breaker; The lifting structure frame formed by cooperation between the supporting unit and the stabilizing unit is stable and has certain pressure bearing capacity, and then the center-mounted vacuum circuit breaker is lifted by the lifting unit, so that the bottom of the center-mounted vacuum circuit breaker can be disassembled and checked and repaired by the maintenance personnel; the center-mounted vacuum circuit breaker is maintained by the operation and maintenance trolley, so as to reduce the labor burden of the workers and improve the work efficiency.

[0006] In a preferred embodiment of the portable operation and maintenance trolley provided by the application, The stabilizing unit comprises a first connecting rod, a second connecting rod, and a screw rod element for connecting the first connecting rod and the second connecting rod; The first connecting rod is hingedly connected with the inclined supporting rod, and the second connecting rod is hingedly connected with the cross rod; A left-hand thread is formed in the inner part of the open end of the first connecting rod, and a right-hand thread is formed in the inner part of the open end of the second connecting rod; The screw rod element is provided with external thread structures at both ends thereof, which are matched with the first connecting rod and the second connecting rod; The stabilizing unit is supported between the cross rod and the inclined supporting rod in the form of a long rod structure, the vertical rod, the cross rod and the stabilizing unit form a triangular structure and provide good support effect, and the stabilizing unit is assembled by multiple parts, so as to facilitate the transportation and rapid assembly of the equipment by the workers.

[0007] In a preferred embodiment of the portable operation and maintenance trolley provided by the application, The screw rod element is matched with the second connecting rod and the first connecting rod at both ends thereof, so as to adjust the length of the stabilizing unit and eliminate the shaking of the shaft pin hole caused by the gap; The screw rod element is provided with a force adding rod outwardly extended at the middle position thereof; The screw rod element is connected with the first connecting rod and the second connecting rod at both ends thereof, the overall length of the stabilizing unit can be adjusted by rotating the screw rod element, and different lengths are adopted to support the cross rod, so as to adapt to different size apertures existing in each assembly process.

[0008] In a preferred embodiment of the portable operation and maintenance trolley provided by the application, The telescopic supports are installed on both sides of the long axis direction of the supporting base frame, the walking wheels are installed at the bottom of the telescopic supports, and the telescopic supports are slidingly connected with the supporting base frame, so as to realize the telescopic movement of the telescopic supports along the long axis direction of the supporting base frame; When the center-mounted vacuum circuit breaker is lifted, the telescopic supports are unfolded to the two sides of the supporting base frame, the bottom supporting area is increased, and the stability of the entire equipment during lifting is ensured; when the trolley needs to be transported, the telescopic supports are close to the supporting base frame, the overall volume of the equipment is reduced, and the equipment is convenient to place in the trolley for transportation.

[0009] In a preferred embodiment of the portable operation and maintenance trolley provided by the application: The support base frame is in a "mouth" shape structure, and the support base frame is symmetrically provided with support feet along the long axis direction; The support feet can support the support base frame in the long axis direction; After the telescopic frame is unfolded, in order to prevent the connection position of the support base frame and the telescopic frame from being bent and sunken under the action of gravity, the support feet are used to support the position, so that the support base frame and the telescopic frame are kept in the same horizontal position.

[0010] In a preferred embodiment of the portable operation and maintenance trolley provided by the application: The telescopic frame comprises a bottom horizontal frame and a bottom vertical frame, and the bottom horizontal frame and the bottom vertical frame are in sliding connection; The bottom horizontal frame and the support base frame are in sliding connection, and the bottom horizontal frame and the bottom vertical frame are in sliding connection; The bottom horizontal frame is provided with an auxiliary supporting wheel on the side wall close to the end of the bottom vertical frame; In order to further expand the area covered by the telescopic frame, the telescopic frame can be further telescoped along the longitudinal direction, so as to adjust the distance and position of the telescopic frame; and in order to further facilitate the movement of the telescopic frame, an auxiliary supporting wheel is arranged at the connection position of the bottom horizontal frame and the bottom vertical frame, so that the support structure is not deformed, and the equipment is facilitated to move.

[0011] In a preferred embodiment of the portable operation and maintenance trolley provided by the application: A through hole is formed in the top of the bottom horizontal frame; A screw rod is arranged in the through hole, and the screw rod penetrates through the support base frame and extends to the outside of the support base frame; A nut is arranged on the outside of the screw rod, the nut is in threaded connection with the screw rod, the bottom surface of the nut is in abutment with the surface of the support base frame, so as to fix the position between the bottom horizontal frame and the support base frame; The position of the axis of the first hinge plate and the second hinge plate coincides with the side wall of the support base frame, so that when the second hinge plate is in abutment with the support base frame, the column is in a state perpendicular to the bottom surface.

[0012] In a preferred embodiment of the portable operation and maintenance trolley provided by the application: The hinge position of the inclined support rod and the support base frame is staggered with the hinge position of the column and the support base frame; The inclined support rod, the support base frame and the column form a stable triangular structure, so as to realize the stable support of the column and the support base frame; The inclined supporting rod supports the stand from the bottom position, and the length of the inclined supporting rod is short, so that stable support of the stand can be formed, and the inclined supporting rod is hinged with the supporting base, so that the inclined supporting rod can be folded to facilitate transportation.

[0013] In a preferred embodiment of the application, the bottom cross frame side wall is provided with a through hole. A screw rod is arranged in the through hole, and the screw rod penetrates the supporting base and extends to the outside. A nut is arranged outside the screw rod, the nut is threadedly connected with the screw rod, and the bottom surface of the nut abuts against the surface of the supporting base, so as to fix the position between the bottom cross frame and the supporting base. The side walls in contact with the bottom cross frame and the bottom longitudinal frame are clamped and fixed through the threaded cooperation between the screw rod and the nut, so as to fix the position between the bottom cross frame and the bottom longitudinal frame.

[0014] In a preferred embodiment of the application, the stand and the vertical rod are detachably connected. The horizontal rod and the vertical rod are detachably connected. In order to further reduce the overall volume of the device for transportation, the vertical rod, the horizontal rod and the stand are connected in a detachable manner.

[0015] The application has the following beneficial effects: the cooperation between the supporting unit and the lifting unit can provide sufficient moving space for the movement of the middle-mounted vacuum circuit breaker, the lifting unit can expose the bottom of the middle-mounted vacuum circuit breaker with less labor, and the maintenance personnel can operate better; meanwhile, the stable unit further ensures the stability of the supporting frame structure, and ensures that the positions of the contact points of the supporting frame remain stable during the lifting of the middle-mounted vacuum circuit breaker. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the application, the drawings of the embodiments of the application will be briefly introduced below. Obviously, the drawings described below only relate to some embodiments of the application, and are not a limitation on the application.

[0017] Figure 1 A working state schematic diagram of the operation and maintenance trolley is shown; Figure 2 An exploded structure schematic diagram of the operation and maintenance trolley is shown; Figure 3 A partial enlarged view of A of Figure 2 is shown; Figure 4 A partial enlarged view of B of Figure 2 is shown; Figure 5 Figure 1 shows a schematic diagram of the connection structure of the inclined support rod and the support chassis; Figure 6 Figure 1 shows a schematic diagram of the connection structure of the inclined support rod and the support chassis;

[0018] Figure 1 shows a schematic diagram of the connection structure of the inclined support rod and the support chassis; Figure 1 shows a schematic diagram of the connection structure of the inclined support rod and the support chassis; 1, support unit; 11, support chassis; 111, support foot; 12, telescopic frame; 121, bottom horizontal frame; 1211, through hole; 122, bottom vertical frame; 123, auxiliary support wheel; 124, screw rod; 125, nut; 13, walking wheel; 14, vertical column; 15, inclined support rod; 16, vertical rod; 17, horizontal rod; 18, connecting piece; 181, first hinged plate; 182, second hinged plate; 2, stabilizing unit; 21, first connecting rod; 22, second connecting rod; 23, screw rod; 231, force amplifying rod; 3, lifting unit; 31, winch; 32, steel wire rope. DETAILED DESCRIPTION

[0019] In order for those skilled in the art to better understand the present application, the present application will be further described in detail below in conjunction with specific embodiments and accompanying drawings.

[0020] The terms used in the present application are those general terms currently widely used in the art in consideration of the functions of the present application, but these terms can be changed according to the intention of those skilled in the art, precedents, or new technologies in the art. In addition, specific terms can be selected by the applicant, and in this case, the detailed meaning thereof will be described in the detailed description of the present application. Therefore, the terms used in the specification should not be understood as simple names, but based on the meaning of the terms and the overall description of the present application.

[0021] Reference Figure 1 The present embodiment provides a portable operation and maintenance trolley, comprising, The support unit 1 has sufficient height to lift the central vacuum circuit breaker, and the support unit 1 comprises a support chassis 11, the inner wall of the support chassis 11 is hinged with a vertical column 14, and the side wall of the support chassis 11 is hinged with an inclined support rod 15 for supporting the vertical column 14; the vertical column 14 is connected with a vertical rod 16 along the long axis direction, and the long axis direction of the vertical column 14 is the vertical direction shown in the figure, and the end of the vertical rod 16 away from the vertical column 14 is connected with a horizontal rod 17 perpendicular to the long axis direction of the vertical column 14; Figure 1 The support unit 1 has sufficient height to lift the central vacuum circuit breaker, and the support unit 1 comprises a support chassis 11, the inner wall of the support chassis 11 is hinged with a vertical column 14, and the side wall of the support chassis 11 is hinged with an inclined support rod 15 for supporting the vertical column 14; the vertical column 14 is connected with a vertical rod 16 along the long axis direction, and the long axis direction of the vertical column 14 is the vertical direction shown in the figure, and the end of the vertical rod 16 away from the vertical column 14 is connected with a horizontal rod 17 perpendicular to the long axis direction of the vertical column 14; The stabilizing unit 2 mainly forms a stable support between the horizontal rod 17 and the vertical rod 16 to ensure the stability of the structure between the vertical rod 16 and the horizontal rod 17; one end of the stabilizing unit 2 is connected with the horizontal rod 17, and the other end is connected with the inclined support rod 15; the triangle structure formed by the stabilizing unit 2, the vertical column 14 and the horizontal rod 17 further realizes the stability of the trolley structure; The lifting unit 3 can lift the middle-mounted vacuum circuit breaker to a certain height to expose the bottom of the middle-mounted vacuum circuit breaker for maintenance.

[0022] In order to further ensure the compression strength of the column 14 structure, the side wall of the column 14 is provided with an inclined support rod 15; the inclined support rod 15 can further ensure the stability of the column 14 structure, and provides lateral support for the column 14 to reduce the lateral deformation of the column 14.

[0023] The support base frame 11 is a rectangular frame structure, and the pipe wall of the support base frame 11 is hollow, so that the gravity of the entire device is lighter during the manufacturing process, and the entire device has good pressure bearing capacity; the lateral support force provided by the inclined support rod 15 for the column 14 can better support the entire device.

[0024] Further, in order to ensure that the middle-mounted vacuum circuit breaker has enough lifting space, a vertical rod 16 is installed at the top of the column 14, and a horizontal rod 17 is installed at the top of the vertical rod 16; the L-shaped structure formed between the vertical rod 16 and the horizontal rod 17 makes one end of the horizontal rod 17 extend a distance away from the column 14.

[0025] When the vertical rod 16 meets a certain height and the horizontal rod 17 meets a certain length requirement, due to the long force arm of the vertical rod 16 and the horizontal rod 17, the gravity of the middle-mounted vacuum circuit breaker can easily cause the vertical rod 16 or the horizontal rod 17 to bend when the middle-mounted vacuum circuit breaker is lifted at the end of the horizontal rod 17 away from the column 14; in order to further limit the deformation of the vertical rod 16 and the horizontal rod 17, one end of the stabilizing unit 2 is connected with the horizontal rod 17, and the other end of the stabilizing unit 2 is connected with the inclined support rod 15, and the stabilizing unit 2, the horizontal rod 17 and the vertical rod 16 form a relatively stable triangular structure, thereby further limiting the deformation of the horizontal rod 17 and the vertical rod 16.

[0026] The middle-mounted circuit breaker usually weighs about 200 kg, and more than 5 people are needed to lift the middle-mounted circuit breaker from the transfer trolley. In the process of lifting the middle-mounted circuit breaker, the safety risks of the workers and the middle-mounted circuit breaker are very high. In order to further solve the problem that the workers manually turn the middle-mounted vacuum circuit breaker and the safety risk is high, a winch 31 is installed on the side wall of the stand 14. The winch 31 is fixedly installed on the side wall of the stand 14 through an auxiliary mounting block connected with the winch 31. The winch 31 drives the steel wire rope 32 to be wound or unwound. Since the middle-mounted vacuum circuit breaker is connected with the end of the steel wire rope 32 away from the winch 31, the position of the middle-mounted vacuum circuit breaker is improved by winding the steel wire rope 32 through the winch 31, so that the bottom of the middle-mounted vacuum circuit breaker is away from the support platform, and the bottom of the middle-mounted vacuum circuit breaker is in a suspended state, which can better facilitate the workers to remove the bottom equipment of the middle-mounted vacuum circuit breaker, so as to facilitate the workers to maintain and repair.

[0027] When the middle-mounted vacuum circuit breaker needs to be lifted, the end of the steel wire rope 32 away from the winch 31 is connected with the middle-mounted vacuum circuit breaker, and then the winch 31 is rotated. The winch 31 drives the steel wire rope 32 to be wound around the outer side of the rotating shaft of the winch 31.

[0028] Referring to Figures 1 to 4 , as an optional embodiment, the stabilizing unit 2 is composed of a first connecting rod 21, a second connecting rod 22 and a screw rod 23. The first connecting rod 21 is hingedly connected with the inclined support rod 15. The inclined support rod 15 is provided with a hinge seat by welding. The first connecting rod 21 is connected with the hinge seat through a pin shaft. The first connecting rod 21 is flipped along the axis of the pin shaft.

[0029] The side wall of the cross rod 17 is also connected with a hinge seat by welding. The second connecting rod 22 is hingedly connected with the cross rod 17. The second connecting rod 22 is connected with the hinge seat of the cross rod 17 through a pin shaft. The second connecting rod 22 and the first connecting rod 21 can rotate along the fixed axis position. When the second connecting rod 22 and the first connecting rod 21 are at any specific position, the axes of the second connecting rod 22 and the first connecting rod 21 coincide, so as to connect the first connecting rod 21 and the second connecting rod 22 to form a stable support structure to support the vertical rod 16 and the cross rod 17.

[0030] The connection between the first connecting rod 21 and the second connecting rod 22 is achieved by the cooperation between the bolt and the screw hole to connect and fix the first connecting rod 21 and the second connecting rod 22, the screw rod 23 adopts a double-end screw rod structure to connect the first connecting rod 21 and the second connecting rod 22, and rotating the screw rod 23 can simultaneously increase the depth of the screw rod part into the first connecting rod 21 and the second connecting rod 22, so as to ensure that a stable connection structure is formed between the screw rod 23, the first connecting rod 21 and the second connecting rod 22.

[0031] Further, the stabilizing unit 2 is detachably installed, which further facilitates the disassembly of the staff, thereby reducing the volume of the entire device and facilitating the transportation of the device by the staff.

[0032] Further, the outer wall circumferential surface of the screw rod 23 is also provided with a force adding rod 231, which makes it easier for the staff to assemble the device when rotating the screw rod 23.

[0033] During installation, first, the second connecting rod 22 is connected with the cross rod 17, then one end of the screw rod 23 is threadedly connected with the first connecting rod 21, and the other end of the screw rod 23 is threadedly connected with the second connecting rod 22, and during initial installation, the depth difference of the screw rod 23 into the first connecting rod 21 and the second connecting rod 22 needs to be ensured to be small; then the first connecting rod 21 is connected with the hinge seat of the inclined support rod 15 through a pin shaft, and during the connection of the first connecting rod 21 and the inclined support rod 15, the length of the entire stabilizing unit 2 is first adjusted by rotating the screw rod 23, and when the length is appropriate and the end of the first connecting rod 21 away from the screw rod 23 can be connected with the hinge seat of the inclined support rod 15, the first connecting rod 21 and the inclined support rod 15 are connected and fixed by using the pin shaft; then in order to further ensure that the vertical rod 16 and the cross rod 17 will not deform during lifting of the heavy object, the vertical rod 16 and the cross rod 17 need to be supported in the opposite direction of gravity, and after the entire device is assembled, there is still a certain gap between the components of the entire device, which needs to be further balanced, therefore after assembly, the screw rod 23 is reversely rotated, the length of the screw rod part of the screw rod 23 extending out of the first connecting rod 21 and the second connecting rod 22 is increased, the overall length of the stabilizing unit 2 is increased, the gap between the components is solved, and the vertical rod 16 and the cross rod 17 are reversely supported, so that the vertical rod 16 and the cross rod 17 remain in a stable state.

[0034] Reference Figures 1 to 6In an embodiment provided by the present application, the support base 11 is provided with a telescopic frame 12 extending to both sides along the long axis direction, the support base 11 is of a rectangular structure, and the long axis direction is the direction in which the side wall of the longer end of the support base 11 extends; and the telescopic frame 12 can increase the distance across the entire support base, thereby effectively resisting the instability caused by the lateral force of the entire device and further avoiding the tilting of the entire device.

[0035] The telescopic frame 12 includes a bottom cross frame 121 in sliding connection with the support base 11, and it is to be noted that the bottom cross frame 121 is of an 'F' structure in the vertical direction, and the telescopic frame 12 further includes a bottom longitudinal frame 122 in sliding connection with the bottom cross frame 121, and the sliding direction between the bottom cross frame 121 and the support base 11 is parallel to the long axis direction of the support base 11; through the mutual sliding between the bottom cross frame 121 and the support base 11, the lateral span of the support base can be increased or shortened along the long axis direction of the support base 11; the sliding direction between the bottom cross frame 121 and the bottom longitudinal frame 122 is not parallel to the sliding direction between the bottom cross frame 121 and the support base 11, and the mutual sliding between the bottom cross frame 121 and the bottom longitudinal frame 122 can increase or shorten the longitudinal span of the support base along the short axis direction of the support base 11; based on the increase of the lateral and longitudinal spans of the support base, the tilting of the entire device when lifting the heavy object can be avoided.

[0036] Further, the bottom cross frame 121 is in sliding connection with the support base 11, when the end of the bottom cross frame 121 close to the support base 11 is located inside the support base 11 at a short distance, the lifting of the heavy object is easily affected by the gravity of the heavy object, so that the contact position between the support base 11 and the bottom cross frame 121 is bent; therefore, the support base 11 is provided with a threaded sleeve at the central position in the short axis direction, and the threaded sleeve is provided with a support leg 111 inside, the threaded part of the support leg 111 is in threaded connection with the threaded sleeve, and by rotating the support leg 111, the position of the bottom of the support leg 111 away from the ground can be adjusted to abut against the ground, thereby further decomposing the influence of the gravity on the contact position between the support base 11 and the bottom cross frame 121 during the lifting of the heavy object, and avoiding the bending of the contact position between the support base 11 and the bottom cross frame 121.

[0037] When lifting the heavy object, the support leg 111 is in contact with the ground and located at the central position in the short axis direction of the support base 11 to form a stable support point, so that the support base 11 and the bottom cross frame 121 will not be dislocated under the action of gravity; and when the entire device needs to be moved, the support leg 111 can be adjusted to be away from the ground.

[0038] Further, the number of telescopic frames 12 is two groups, and the two groups of telescopic frames 12 are symmetrically arranged on both sides of the long axis direction of the support base frame 11; in order to ensure that the position between the bottom cross frame 121 and the support base frame 11 is in a relatively fixed state, and to avoid the device from sliding when hoisting; the side wall of the bottom cross frame 121 is provided with a through hole 1211, the opposite surface of the support base frame 11 and the through hole 1211 is provided with a circular hole, and a screw rod 124 is arranged in the circular hole, the bottom of the screw rod 124 is located inside the bottom cross frame 121, and the screw rod 124 penetrates the through hole 1211 and the circular hole and extends to the outside of the support base frame 11; the bottom of the screw rod 124 is fixedly connected with a protrusion, the protrusion is arranged inside the bottom cross frame 121, the radial dimension of the protrusion is greater than the transverse dimension of the through hole 1211, the protrusion cannot pass through the through hole 1211 with the screw rod 124, and a threaded nut 125 is sleeved outside the screw rod 124 in a threaded manner; by rotating the threaded nut 125, the threaded nut 125 is close to the upper surface of the support base frame 11, the bottom of the protrusion is close to the bottom inner wall of the bottom cross frame 121, the threaded nut 125 and the protrusion limit the screw rod 124, and the position between the bottom cross frame 121 and the support base frame 11 is fixed.

[0039] When the bottom cross frame 121 needs to slide relative to the support base frame 11, that is, the bottom cross frame 121 slides along the inner wall of the support base frame 11, the threaded nut 125 is rotated to move away from the upper surface of the support base frame 11, and the close contact between the protrusion at the bottom of the screw rod 124 and the bottom cross frame 121 is released; when it is necessary to fix the position of the bottom cross frame 121 and the support base frame 11, the threaded nut 125 is rotated by using a wrench, so that the bottom of the threaded nut 125 is pressed against the upper surface of the support base frame 11, and the protrusion at the bottom of the screw rod 124 abuts against the inner wall of the bottom cross frame 121 and is pressed tightly; the screw rod 124 and the threaded nut 125 are in threaded connection, so that the position of the bottom cross frame 121 and the support base frame 11 is fixed.

[0040] It should be noted that the bottom cross frame 121 and the bottom longitudinal frame 122 are in sliding connection, and the fixing mode of the position between the bottom cross frame 121 and the bottom longitudinal frame 122 can also adopt the fixing mode between the support base frame 11 and the bottom cross frame 121; the position between the bottom cross frame 121 and the bottom longitudinal frame 122 can also be fixed by positioning holes and in cooperation with a pin shaft after the bottom longitudinal frame 122 is stretched to a suitable length.

[0041] The overall longitudinal length of the bottom horizontal frame 121 and the bottom vertical frame 122 after stretching and unfolding is relatively long, which makes the connection position of the bottom horizontal frame 121 and the bottom vertical frame 122 easily affected by the gravity brought about during the lifting of heavy objects, and thus causes the connection position of the bottom horizontal frame 121 and the bottom vertical frame 122 to bend; therefore, in order to ensure that the bottom horizontal frame 121 and the bottom vertical frame 122 are in a horizontal state, an auxiliary support wheel 123 is provided at the connection position of the bottom horizontal frame 121 and the bottom vertical frame 122. The auxiliary support wheel 123 is in contact with the ground and provides good support for the bottom horizontal frame 121 and the bottom vertical frame 122.

[0042] The bottom horizontal frame 121 and the bottom vertical frame 122 are respectively provided with walking wheels 13 at the end positions away from each other, and the two sets of telescopic frames 12 are symmetrically arranged, thereby ensuring that the four sets of walking wheels 13 are arranged at the four corners of the support base, thereby better facilitating the staff to push the equipment to move.

[0043] Figures 1 to 6 In some embodiments, in this embodiment, the column 14 and the supporting base 11 are hinged by a connecting member 18, and the first hinge plate 181 and the supporting base 11 are connected by bolts, and the second hinge plate 182 and the column 14 are connected by bolts; the column 14 is symmetrically provided with oblique support columns along both sides to effectively prevent the column 14 from bending.

[0044] It should be noted that the position of the hinge axis of the first hinge plate 181 and the second hinge plate 182 is located on the side wall of the support base 11, and during the flipping process of the column 14, the side wall of the second hinge plate 182 conflicts with the side wall of the support base 11, and the support base 11 limits the rotation angle of the second hinge plate 182, so that the column 14 is perpendicular to the support base 11.

[0045] Furthermore, the oblique support rod 15 is also connected to the supporting base frame 11 by a hinged manner, and the oblique support rod 15 is flipped at an appropriate angle so that one end of the oblique support rod 15 is engaged with the outside of the column 14, and then the position between the oblique support rod 15 and the column 14 is fixed by bolts, thereby ensuring that the oblique support rod 15 can provide stable support for the column 14.

[0046] Specifically, the upright column 14 and the vertical rod 16 are connected by means of bolts clamping a connecting sleeve, which is easy to disassemble and reduces the volume of the entire device.

[0047] For the maintenance of the middle type vacuum circuit breaker, each distribution room is in different position, some of which are in the hinterland of the mountain area. If the whole equipment is too large, it will be more difficult to operate during the transfer process. In order to facilitate the transportation of the whole equipment, the whole equipment is disassembled, the size of the whole maintenance trolley is reduced and placed in the interior of the power repair truck for transportation. When disassembling, the steel wire rope 32 is wound in the winch 31, then the first connecting rod 21 and the inclined support rod 15 are separated, then the connection between the inclined support rod 15 and the column 14 is disconnected, then the column 14 is turned over, the vertical rod 16 and the horizontal rod 17 are slowly tilted and placed in a lower position, then the second connecting rod 22 and the horizontal rod 17 are separated, then the horizontal rod 17 and the vertical rod 16 are disassembled, then the first connecting rod 21 and the second connecting rod 22 are separated, at this time only the components of the supporting base are left, the telescopic frame 12 is compressed to the minimum state, then the column 14 and the inclined support rod 15 are inclined and leaned on the surface of the supporting base 11, thereby completing the disassembly of the whole equipment. Then the disassembled parts are carried into the interior of the power repair truck, so as to achieve the purpose of convenient transportation.

[0048] Finally, it should be pointed out that the above detailed description of the method and equipment is only an embodiment, and those skilled in the art can modify the embodiment in different ways without departing from the scope of the present application.

[0049] It is important to note that the above embodiments are only used to illustrate the technical solutions of the present application and are not limited. Although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or replaced by equivalents without departing from the spirit and scope of the present application, which should be covered in the scope of the claims of the present application.

Claims

1. A portable maintenance vehicle, characterized by: include, A support unit (1) comprises a support base (11), wherein an inner wall of the support base (11) is hingedly connected to a column (14), and a side wall of the support base (11) is hingedly connected to an oblique support rod (15) for supporting the column (14); the column (14) is connected to a vertical rod (16) along the longitudinal direction, and the end of the vertical rod (16) away from the column (14) is connected to a horizontal rod (17) perpendicular to the longitudinal direction of the column (14); A stabilizing unit (2), one end of the stabilizing unit (2) is connected to the cross bar (17), and the other end is connected to the oblique support bar (15); The stabilizing unit (2), the upright column (14) and the crossbar (17) form a triangular structure, thereby achieving stability of the trolley structure; The lifting unit (3) comprises a winch (31) and a steel wire rope (32) wound around the outer wall of a rotating shaft of the winch (31); the winch (31) retracts and releases the steel wire rope (32), thereby raising or lowering the position of the center-mounted vacuum circuit breaker.

2. The portable operation and maintenance vehicle according to claim 1, characterized in that: The stabilizing unit (2) comprises a first connecting rod (21), a second connecting rod (22), and a screw member (23) for connecting the first connecting rod (21) and the second connecting rod (22); The first connecting rod (21) is hinged to the oblique support rod (15), and the second connecting rod (22) is hinged to the cross rod (17); A left-hand thread is provided inside the open end of the first connecting rod (21), and a right-hand thread is provided inside the open end of the second connecting rod (22); Both ends of the screw member (23) are respectively provided with external thread structures adapted to the first connecting rod (21) and the second connecting rod (22).

3. The portable operation and maintenance vehicle according to claim 2, characterized in that: The two ends of the screw member (23) respectively cooperate with the second connecting rod (22) and the first connecting rod (21), and can adjust the length of the stabilizing unit (2), thereby eliminating the shaking of the shaft pin hole caused by the gap; A force-adding rod (231) is provided extending outward from the middle portion of the screw member (23).

4. The portable operation and maintenance vehicle according to claim 3, characterized in that: Telescopic frames (12) are installed on both sides of the supporting base frame (11) in the long axis direction, and walking wheels (13) are installed at the bottom of the telescopic frame (12). The telescopic frame (12) is slidably connected to the supporting base frame (11), thereby enabling the telescopic frame (12) to be telescoped along the long axis direction of the supporting base frame (11).

5. The portable operation and maintenance vehicle according to claim 4, characterized in that: The support base (11) is a "mouth"-shaped structure, and the support base (11) is symmetrically provided with support feet (111) along the long axis direction; The support legs (111) can contact the ground to support both sides of the support base frame (11) in the long axis direction.

6. The portable operation and maintenance vehicle according to claim 5, characterized in that: The telescopic frame (12) comprises a bottom horizontal frame (121) and a bottom vertical frame (122), and the bottom horizontal frame (121) and the bottom vertical frame (122) slide with each other; The bottom horizontal frame (121) is in sliding engagement with the supporting bottom frame (11), and the bottom horizontal frame (121) is in sliding engagement with the bottom vertical frame (122); An auxiliary support wheel (123) is provided on a side wall of the bottom horizontal frame (121) close to the end of the bottom vertical frame (122).

7. The portable operation and maintenance vehicle according to claim 6, characterized in that: A through hole (1211) is formed on the top of the bottom horizontal frame (121); A screw rod (124) is provided inside the through hole (1211), and the screw rod (124) passes through the supporting base frame (11) and extends to the outside of the supporting base frame (11); A nut (125) is sleeved on the outside of the screw rod (124), the nut (125) being threadedly connected to the screw rod (124), and the bottom surface of the nut (125) abutting against the surface of the supporting base frame (11), thereby achieving the fixation of the position between the bottom cross frame (121) and the supporting base frame (11).

8. The portable operation and maintenance vehicle according to claim 7, characterized in that: The upright column (14) and the supporting base frame (11) are hingedly connected via a connecting piece (18); The connecting member (18) comprises a first hinge plate (181) and a second hinge plate (182), wherein the first hinge plate (181) and the second hinge plate are hingedly connected; The first hinge plate (181) is fixedly connected to the side wall of the support base (11), the second hinge plate (182) is connected to the column (14), and the hinge point between the first hinge plate (181) and the second hinge plate (182) coincides with the side wall of the support base (11).

9. The portable operation and maintenance vehicle according to claim 8, characterized in that: The hinge position between the oblique support rod (15) and the support base (11) is staggered from the hinge position between the upright column (14) and the support base (11); A stable triangular structure is formed between the oblique support rod (15), the support base (11) and the column (14), thereby achieving stable support of the column (14) and the support base (11).

10. The portable operation and maintenance vehicle according to claim 9, characterized in that: The upright post (14) and the vertical rod (16) are detachably connected; The crossbar (17) and the vertical bar (16) are detachably connected.

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