Grabbing device and intelligent transfer trolley

Abstract

The invention provides a grabbing device and an intelligent transfer trolley, the grabbing device is used for grabbing an isolation circuit breaker handcart or a mutual inductor handcart of a high-voltage switch cabinet to the intelligent transfer trolley, the grabbing device comprises a moving beam and a pair of first grabbing mechanisms, and the pair of first grabbing mechanisms are arranged on the moving beam at intervals and can be close to or away from each other; each first grabbing mechanism comprises a swing rod capable of swinging longitudinally and a first hook plate arranged at the tail end of the swing rod, and the first hook plate is provided with a first clamping groove used for hooking a preset clamping part on an isolation circuit breaker handcart or a mutual inductor handcart. According to the device, the isolation circuit breaker handcart or the mutual inductor handcart is grabbed and unlocked from the electrical cabinet, finally, the isolation circuit breaker handcart or the mutual inductor handcart is transferred and maintained, operation is convenient and fast, time and labor are saved, and adjustment is easy and convenient.

Description

Technical Field

[0001] The present invention belongs to the technical field of electric power equipment, and in particular relates to an auxiliary equipment for electric power equipment maintenance operations, and more specifically to a grabbing device and an intelligent transfer vehicle including the grabbing device. Background Art

[0002] As we all know, the safety and reliability of operation and maintenance of industrial electrical power equipment are the primary considerations of the power supply department.

[0003] Specifically, in the industrial power and electrical equipment industry, for example, 10kV power systems are usually used, and indoor AC withdrawable switchgear is a complete set of power distribution equipment for single busbar and single busbar segmentation systems. This type of switchgear can be used in power plants, power transmission of small and medium-sized generators, power distribution of industrial and mining enterprises, and power receiving and transmission of secondary substations of power systems, and starting of large high-voltage motors, etc., to achieve the purpose of controlling, protecting, and detecting power equipment, and plays an important role in the operation of power systems and the protection of power equipment.

[0004] The transfer vehicle is a must-have operation and maintenance tool for the power distribution room in the substation. Specifically, the intelligent transfer vehicle is mainly used for the transfer and operation and maintenance of the isolating circuit breaker trolley and the current transformer trolley in the power and electrical equipment, so as to improve the efficiency of substation operation and maintenance and reduce labor intensity.

[0005] A key functional component on the intelligent transfer vehicle is the grabbing device, which is used to lock the isolating circuit breaker trolley or the transformer trolley of the high-voltage switchgear and grab it into the frame of the intelligent transfer vehicle, thereby achieving the purpose of removing the isolating circuit breaker trolley or the transformer trolley from the high-voltage switchgear.

[0006] The prior art uses manual labor to achieve the above purpose, which is difficult to operate and labor-intensive. Summary of the invention

[0007] The purpose of the present invention is to solve the above-mentioned problems of the prior art and to provide a grabbing device and a corresponding intelligent transfer vehicle with a simple structure and convenient and reliable unlocking and locking.

[0008] To achieve the above objectives, the present invention provides the following technical solutions:

[0009] The present invention provides a grabbing device for grabbing an isolating circuit breaker trolley or a transformer trolley of a high-voltage switch cabinet onto an intelligent transfer vehicle, comprising a moving beam and a pair of first grabbing mechanisms, wherein the pair of first grabbing mechanisms are arranged on the moving beam at intervals and can approach or move away from each other, each of the first grabbing mechanisms comprises a swing arm that can swing longitudinally and a first hook plate arranged at the end of the swing arm, and the first hook plate is provided with a first card slot for hooking a preset card portion on the isolating circuit breaker trolley or the transformer trolley, wherein when the two first hook plates hook the card portion on the isolating circuit breaker trolley and are driven to approach each other, the isolating circuit breaker trolley and the high-voltage switch cabinet are unlocked so that the isolating circuit breaker trolley can be separated from the cabinet body.

[0010] Preferably, the corresponding swing rods of the pair of first grasping mechanisms are arranged to swing synchronously. Further preferably, the grasping device further comprises a lead screw arranged parallel to the moving beam, a base fixed on the moving beam, and a cantilever arranged at one end of the base; each of the swing rods is sleeved on the lead screw; and the top of the cantilever is rotatably connected to one end of the first electric push rod.

[0011] Preferably, the grasping device further comprises a synchronization rod, and the synchronization rod passes through the middle part of each of the swing rods; the other end of the first electric push rod is rotationally connected to the synchronization rod.

[0012] Further preferably, a threaded sleeve is sleeved on the lead screw, and the threaded sleeve is axially connected to the rocker rod; and drive motors connected thereto are arranged at both ends of the lead screw.

[0013] Preferably, a slide rail is arranged on the movable beam, a slider is arranged on the slide rail, and the slider and the threaded sleeve are fixed via a connecting rod.

[0014] Preferably, the grabbing device further comprises a second grabbing mechanism for grabbing the insulating plate of the high-voltage switch cabinet, and the second grabbing mechanism is arranged between the two first grabbing mechanisms and is arranged on the moving beam.

[0015] More preferably, the second grasping mechanism includes a second hook plate and a second electric push rod, the second hook plate is rotatably arranged on the other end of the base opposite to the end where the cantilever is arranged, a second clamping groove is formed in the second hook plate for clamping a preset clamping portion on the insulating plate, and the second electric push rod is pivotally connected to the top end of the cantilever and the second hook plate at the same time.

[0016] Preferably, both ends of the moving beam are connected with sliding guide blocks for being installed on external rails to realize the overall movement of the grabbing device.

[0017] At the same time, an intelligent transfer vehicle is provided, including a frame, a lifting device, a track assembly, a push-pull assembly and the above-mentioned grabbing device; the lifting device is arranged on the frame, the track assembly is arranged on the lifting device and is driven by the lifting device to be lifted and lowered, the push-pull assembly is arranged on the track assembly, and the grabbing device is arranged on the push-pull assembly and is driven by the push-pull assembly to move on the track assembly.

[0018] The technical solution provided by the present invention has the following beneficial effects: in the present invention, the isolating circuit breaker trolley or transformer trolley of the high-voltage switch cabinet is grabbed onto the intelligent transfer vehicle. Since the grabbing device includes a moving beam and a pair of first grabbing mechanisms, the two first grabbing mechanisms are arranged on the moving beam at intervals and can approach or move away from each other under the drive of an external mechanism. When the two first grabbing mechanisms approach each other, the unlocking action between the isolating circuit breaker trolley and the high-voltage switchgear cabinet is realized. Each first grabbing mechanism includes a swing arm that can swing longitudinally and a first hook plate arranged at the end of the swing arm, and the first hook plate is provided with a first card slot for hooking the preset card connection part on the isolating circuit breaker trolley or the transformer trolley. When the swing arm swings longitudinally to a certain position, such as when it is exactly located at the corresponding position of the preset clamping part on the isolating circuit breaker trolley or the transformer trolley, the two swing arms of the two first grabbing mechanisms move toward each other, thereby synchronously extending into the corresponding clamping part, and then the two swing arms swing again to make the corresponding first clamping groove engage with the corresponding clamping part, thereby realizing the locking of the isolating circuit breaker trolley or the transformer trolley. When the swing arm swings to a certain position in the opposite direction again, the clamping part can be released. Finally, the circuit breaker or transformer can be pulled out and maintained, which is convenient to operate, saving time and effort. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for describing the embodiments of the present invention are briefly introduced below.

[0020] Figure 1a A three-dimensional structural diagram of a gripping device provided in one embodiment of the present invention;

[0021] Figure 1b It is a three-dimensional structural diagram of an intelligent transfer vehicle including the above-mentioned grabbing device;

[0022] Figure 2a for Figure 1b An enlarged structural diagram of part A of the intelligent transfer vehicle shown;

[0023] Figure 2b for Figure 1b An enlarged structural diagram of part B of the intelligent transfer vehicle shown;

[0024] Figure 2c for Figure 1bAn enlarged structural diagram of the C portion of the intelligent transfer vehicle shown;

[0025] Figure 2d for Figure 1b An enlarged structural diagram of the D portion of the intelligent transport vehicle shown;

[0026] Figure 3 A three-dimensional structural diagram of the intelligent transfer vehicle provided by an embodiment of the present invention from another angle;

[0027] Figure 4a for Figure 3 An enlarged structural diagram of part A of the intelligent transfer vehicle shown;

[0028] Figure 4b for Figure 3 An enlarged structural diagram of part B of the intelligent transfer vehicle shown;

[0029] Figure 4c for Figure 3 The enlarged structural view of the C part of the intelligent transfer vehicle shown shows the detailed structure of the grabbing device;

[0030] Figure 5 A three-dimensional structural diagram of the intelligent transfer vehicle provided by an embodiment of the present invention from another angle;

[0031] Figure 6 for Figure 5 The enlarged structural view of part A of the intelligent transfer vehicle shown shows the detailed structure of the grabbing device. DETAILED DESCRIPTION

[0032] Embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although certain embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be construed as being limited to the embodiments described herein, which are instead provided for a more thorough and complete understanding of the present invention. It should be understood that the drawings and embodiments of the present invention are only for exemplary purposes and are not intended to limit the scope of protection of the present invention.

[0033] It should be understood that the various steps described in the method embodiments of the present invention may be performed in different orders and / or in parallel. In addition, the method embodiments may include additional steps and / or omit the steps shown. The scope of the present invention is not limited in this respect.

[0034] The term "including" and its variations used herein are open inclusions, i.e., "including but not limited to". The term "connected" may be directly connected or indirectly connected through intermediate components (elements). The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one other embodiment"; the term "some embodiments" means "at least some embodiments". The relevant definitions of other terms will be given in the following description.

[0035] It should be noted that the concepts such as "first" and "second" mentioned in the present invention are only used to distinguish between devices, modules or units, and are not used to limit these devices, modules or units to be different devices, modules or units, nor are they used to limit the order or interdependence of the functions performed by these devices, modules or units.

[0036] First of all, to summarize, the intelligent transport vehicle of the present invention is suitable for docking with a high-voltage switch cabinet to realize the transportation of large-sized or heavy components such as isolating circuit breakers (i.e., trolleys), insulating panels, and transformer trolleys in the high-voltage switch cabinet. It should be noted that a locking structure is provided between the isolating circuit breaker trolley and the cabinet of the high-voltage switch cabinet, and the locking structure mainly includes a locking rod that is retractably arranged in the isolating circuit breaker trolley and can be passed through the isolating circuit breaker mechanism box and abut against the inner side of the cabinet, and a pull ring that is arranged at the front end of the isolating circuit breaker trolley and can pull the locking rod back into the isolating circuit breaker trolley.

[0037] In the technical solution provided by the present invention, since the grabbing device includes a moving beam and a pair of first grabbing mechanisms, the two first grabbing mechanisms are arranged on the moving beam at intervals and can move closer to or farther from each other under the drive of an external mechanism. Each first grabbing mechanism includes a swing arm that can swing longitudinally and a first hook plate arranged at the end of the swing arm, and the first hook plate is provided with a first clamping groove for hooking a preset clamping part on an isolating circuit breaker trolley or a transformer trolley.

[0038] When the swing arm swings longitudinally to a certain position, such as when it is located at the corresponding position of the preset clamping part on the isolating circuit breaker trolley or the transformer trolley, the two swing arms of the two first grasping mechanisms synchronously extend into the corresponding clamping part (such as the pull ring at the front end of the isolating circuit breaker), and then the two swing arms swing again to make the corresponding first clamping groove engage with the corresponding clamping part, so that the first clamping groove of the first grasping mechanism hooks the isolating circuit breaker trolley or the transformer trolley.

[0039] When it is necessary to unlock the trolley and the electrical cabinet, it is only necessary to move the swing arms closer to each other and pull the two pull rings closer to each other to retract the locking rod into the trolley, so that the trolley can be pulled out of the cabinet to achieve unlocking. Finally, with the help of other devices on the transfer vehicle, such as the push-pull device, the circuit breaker trolley or the transformer trolley can be transported and maintained, which is convenient to operate, saves time and effort, has accurate positioning and is easy to adjust.

[0040] Since the grabbing device of the present invention is arranged on the intelligent transfer vehicle, for the convenience of description, the intelligent transfer vehicle will be described as a whole first, and then the grabbing device will be described.

[0041] 1-6 , according to one embodiment of the present invention, a gripping device 30 is provided, which includes a moving beam 32 fixed to, for example, a horizontal conveyor belt 74 , and two of the above-mentioned first gripping mechanisms 36 and a second gripping mechanism 34 arranged on the moving beam 32 .

[0042] The second grabbing mechanism 34 is used to grab the insulating plate on the electrical switch cabinet so as to move the heavy insulating plate into the intelligent transfer vehicle 100. It includes a base 342 fixed on the moving beam 32, a cantilever 344 arranged at one end of the base 342, a second hook plate 346 rotatably arranged at the other end of the base 342, and a second electric push rod 348 pivotally connected to the top end of the cantilever 344 and the second hook plate 346; a second slot 3462 is formed in the second hook plate 346.

[0043] Here, it is necessary to explain that: the second grabbing mechanism 34 has the above-mentioned structure. When it is necessary to grab and drag the insulating plate into the intelligent transfer vehicle 100, first, the intelligent transfer vehicle 100 is moved to the side of the electrical switch cabinet so that the locking assembly 40 is hooked in the corresponding lock hole on the electrical switch cabinet, thereby ensuring that the intelligent transfer vehicle 100 and the electrical switch cabinet are temporarily fixed to each other to ensure operational safety. Subsequently, when the external drive signal acts on the second electric push rod 348, it pushes the second hook plate 346 to flip downward so that the second card slot 3462 is hooked with the corresponding part of the insulating plate, thereby realizing the grabbing action of the insulating plate. When the second card slot 3462 needs to be separated from the corresponding part of the insulating plate, under the action of the external drive signal, the second electric push rod 348 retracts to the original position, and the second hook plate 346 flips upward to realize the separation action of the insulating plate.

[0044] In one embodiment, two first grabbing mechanisms 36 are distributed on the left and right sides of the second grabbing mechanism 34, and are used to grab the circuit breaker trolley or the current transformer trolley, so as to move the circuit breaker trolley or the current transformer trolley into the intelligent transport vehicle 100. Each first grabbing mechanism 36 includes a swing rod 366 rotatably sleeved on the lead screw 362 and a first hook plate 368 disposed at the end of the swing rod 366, and a first slot 3682 is provided on the first hook plate 368; the lead screw 362 is straddled at both ends of the moving beam 32 and is arranged parallel to the moving beam 32; a synchronization rod 369 is arranged in the middle of the swing rod 366, the top of the cantilever 344 is rotatably connected to one end of the first electric push rod 367, and the other end of the first electric push rod 367 is rotatably connected to the synchronization rod 369.

[0045] According to the above structure, when it is necessary to grab and drag the isolating circuit breaker trolley or the current transformer trolley into the intelligent transfer vehicle 100, first, the intelligent transfer vehicle 100 is moved to the side of the electrical switch cabinet so that the locking assembly 40 is hooked in the corresponding lock hole on the electrical switch cabinet, thereby ensuring that the intelligent transfer vehicle 100 and the electrical switch cabinet are temporarily fixed to each other to ensure operational safety. Next, when the external drive signal acts on the first electric push rod 367, it pushes the synchronization rod 369 to produce a positional displacement. Since the synchronization rod 369 passes through the swing rod 366, the swing rod 366 swings around the lead screw 362, so that the first hook plate 368 flips and the first slot 3682 is hooked with the corresponding part of the circuit breaker trolley or the current transformer trolley, and then the moving beam 32 continues to move under the action of the external drive signal, thereby removing it from the electrical switch cabinet.

[0046] Preferably, a threaded sleeve 364 is sleeved on the lead screw 362, and the threaded sleeve 364 is axially connected to the swing rod 366; a driving motor 361 connected to the lead screw 362 is arranged at both ends. When the driving motor 361 is running, it drives the lead screw 362 to rotate together. Since the lead screw 362 is straddled at both ends of the slide rail 38 and cannot move axially, the lead screw 362 only has a rotational movement but no axial movement. The threaded sleeve 364 is connected to the lead screw 362 in a threaded manner, so the threaded sleeve 364 is prompted to move axially, and the two swing rods 366 are synchronously driven to move axially toward or away from each other along the lead screw 362. Here, when the swing rods 366 of the two first grabbing mechanisms 36 approach each other due to the relative movement between the lead screw 326 and the threaded sleeve 364, the corresponding two second clamping grooves 3682 also approach each other, thereby realizing the unlocking between the circuit breaker trolley and the electrical cabinet.

[0047] Preferably, the two ends of the moving beam 32 are connected with sliding guide blocks 200, which are used to be installed on the external track to realize the overall movement of the grabbing device. Here, the sliding guide blocks 200 can adopt various types of structures, such as a dovetail groove structure, an inverted T-shaped structure, etc., and the present invention does not limit this. After the sliding guide blocks 200 are provided, the entire grabbing device can slide in cooperation with the external track, such as the track provided on the frame, so that the grabbing device can move forward and backward along the track.

[0048] Further preferably, a slide rail 38 is provided on the moving beam 32, a slider 365 is provided on the slide rail 38, and the slider 365 is fixed to the sliding sleeve 364 through a connecting rod 363. When the rocker 366 moves axially, in order to ensure the movement accuracy and stability, the above-mentioned slide rail and slider are matched. Specifically, since the sliding between the slider 365 and the sliding sleeve 364 is a precision sliding, and the slider 365 is fixedly connected to the sliding sleeve 364, the circumferential movement of the sliding sleeve 364 is also very stable and smooth, and the rocker 366 connected to the sliding sleeve 364 also moves smoothly and smoothly, thereby improving the stability and reliability of the operation.

[0049] The present invention also provides an intelligent transfer vehicle 100 , which includes a frame 10 , a lifting device 20 , a track assembly 60 , a push-pull assembly 70 , the above-mentioned grasping device 30 and a locking assembly 40 disposed at the end of the protruding end 642 .

[0050] The frame 10 includes a base 12, columns 14 longitudinally arranged from the four corners of the base 12, and a pair of longitudinal beams 18 and a pair of cross beams 16 connecting two adjacent columns 14 at their top ends. The pair of longitudinal beams 18 are arranged in parallel, the pair of cross beams 16 are arranged in parallel, and each longitudinal beam 18 is arranged perpendicular to the adjacent cross beam 16.

[0051] The lifting device 20 includes a motor 24 installed on one of the cross beams 16, a transmission shaft 26 disposed between two columns 14 at both ends of the cross beam 16 and driven to rotate by the motor 24, a longitudinal transmission belt 268 disposed at both ends of the transmission shaft 26 and driven by the transmission shaft 26 to rotate along the height direction of the corresponding column 14, and a fixing frame 28 fixed on the longitudinal transmission belt 268 and capable of being lifted and lowered along the height direction of the corresponding column 14;

[0052] The rail assembly 60 includes a rail mounting frame 62 fixed on a corresponding fixing frame 28 and a rail 64 disposed between two rail mounting frames 62 . One end of the rail 64 has an extended end 642 extending out of the frame 10 .

[0053] The push-pull assembly 70 includes a push-pull motor 72 fixedly mounted on one of the track mounting frames 62 and a horizontal conveyor belt 74 driven by the push-pull motor 72 to rotate along the length direction of the track 64 .

[0054] In the above embodiment, the base 12 of the frame 10 can be composed of multiple, for example, four, profiles of suitable length connected to each other, such as aluminum alloy profiles or stainless steel. Considering that the entire intelligent transport vehicle 100 needs to transport heavy current transformer carts or circuit breaker carts in the electrical switch cabinet, it needs to have a certain load capacity, so the base 12 needs to have sufficient structural strength. Therefore, it is preferred to use steel such as stainless steel to form the base 12. Multiple profiles can be fixed to each other by appropriate means, such as riveting, threaded connection or welding. In another embodiment, the frame 10 adopts an integrally welded square tube structure to ensure the body strength of the entire vehicle and meet the load-bearing requirements.

[0055] Preferably, in one embodiment, a motor mounting plate 22 is provided on one of the beams 16, and the motor 24 is fixed on the motor mounting plate 22. Here, since the cross-sectional area of ​​the beam 16 is much smaller than that of the motor 24, when the motor 24 is directly mounted on the beam 16, it may not be successfully installed due to the limited installation area, or even if it can be installed, the connection strength after installation is not enough, which can easily cause the motor 24 to be offset during operation, and thus fail to accurately transmit power to the transmission shaft 26. After adding the motor mounting plate 22, it is equivalent to increasing the contact area of ​​the motor 24 when it is installed, so that the installation of the motor 24 can be made more firm and stable, and finally the power can be accurately transmitted to the transmission shaft 26.

[0056] In another embodiment, the motor 24 has a horizontal driving shaft 242, and a driving gear 244 is disposed on the horizontal driving shaft 242; correspondingly, a driven gear 262 is disposed on the transmission shaft 26 and meshes with the driving gear 244. Through the meshing of the two gears, the power output by the motor 24 is transmitted to the transmission shaft 26, so that the transmission shaft 26 itself rotates.

[0057] Preferably, upper transmission wheels 264 are arranged at both ends of the transmission shaft 26 near the corresponding posts 14, and lower transmission wheels 266 are arranged at the bottom of the corresponding posts 14 near the base 12, and the longitudinal transmission belt 268 is wound between the corresponding upper transmission wheels 264 and the lower transmission wheels 266. When the transmission shaft 26 rotates, the upper transmission wheels 264 are driven to rotate together, thereby causing the longitudinal transmission belt 268 to perform longitudinal rotational motion.

[0058] In one embodiment, a first transmission wheel 722 is provided on the push-pull motor 72 ; a bracket 726 is provided on the track mounting frame 62 on which the push-pull motor 72 is not provided, and a second transmission wheel 724 is provided on the bracket 726 ; and the horizontal conveyor belt 74 is wound between the first transmission wheel 722 and the second transmission wheel 724 .

[0059] In the present invention, since the grabbing device includes a moving beam and a pair of first grabbing mechanisms, the two first grabbing mechanisms are arranged on the moving beam at intervals and can be driven to move closer to or farther from each other. Each first grabbing mechanism includes a swinging arm that can swing longitudinally and a first hook plate arranged at the end of the swinging arm, and the first hook plate is provided with a first slot for hooking a preset clamping part (such as a locking assembly on the isolating circuit breaker) on the isolating circuit breaker trolley or the transformer trolley. When the swinging arm swings longitudinally to a certain position, such as when it is exactly located at the corresponding position of the preset clamping part on the isolating circuit breaker trolley or the transformer trolley, the two swinging arms of the two first grabbing mechanisms move in the same direction, thereby synchronously extending into the corresponding clamping part, and then the two swinging arms swing again so that the corresponding first slot engages with the corresponding clamping part, thereby realizing the locking of the isolating circuit breaker trolley or the transformer trolley. When the swinging arm swings to a certain position in the opposite direction again, the clamping part can be released. When the two first grabbing mechanisms hook the locking components on the isolating circuit breaker trolley and approach each other, the unlocking action between the isolating circuit breaker trolley and the high-voltage switchgear cabinet is realized, and finally the circuit breaker trolley or the transformer trolley is pulled out and maintained, which is convenient to operate, saving time and effort.

[0060] The above description is only a preferred embodiment of the present invention and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the invention involved in the present invention is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the above inventive concept. For example, the above features are replaced with the technical features with similar functions invented in the present invention (but not limited to) to form a technical solution.

[0061] Although the subject matter has been described in language specific to structural features and / or methodological logical actions, it should be understood that the subject matter defined in the appended claims is not necessarily limited to the specific features or actions described above. On the contrary, the specific features and actions described above are merely example forms of implementing the claims.

Claims

1. A grabbing device, used to grab the isolating circuit breaker trolley or the transformer trolley of the high-voltage switch cabinet onto an intelligent transfer vehicle, characterized in that: It comprises a moving beam and a pair of first grabbing mechanisms, wherein the pair of first grabbing mechanisms are arranged on the moving beam at intervals and can approach or move away from each other, each of the first grabbing mechanisms comprises a swing arm which can swing longitudinally and a first hook plate arranged at the end of the swing arm, and the first hook plate is provided with a first clamping groove for hooking a preset clamping part on an isolating circuit breaker trolley or a transformer trolley, wherein when the two first hook plates hook the clamping parts on the isolating circuit breaker trolley and are driven to approach each other, the isolating circuit breaker trolley and the high-voltage switch cabinet are unlocked so that the isolating circuit breaker trolley can be moved out of the cabinet.

2. The gripping device according to claim 1, characterized in that: The corresponding swing rods of the pair of first grabbing mechanisms are arranged to swing synchronously.

3. The gripping device according to claim 2, characterized in that: It also includes a lead screw arranged parallel to the moving beam, a base fixed on the moving beam and a cantilever arranged at one end of the base; each swing rod is sleeved on the lead screw; the top of the cantilever is rotatably connected to one end of the first electric push rod.

4. The gripping device according to claim 3, characterized in that: It also includes a synchronization rod, which passes through the middle part of each of the swing rods; the other end of the first electric push rod is rotatably connected to the synchronization rod.

5. The gripping device according to claim 4, characterized in that: A threaded sleeve is sleeved on the lead screw, and the threaded sleeve is axially connected to the swing rod; and drive motors connected thereto are arranged at both ends of the lead screw.

6. The gripping device according to claim 5, characterized in that: A slide rail is arranged on the movable beam, a slider is arranged on the slide rail, and the slider is fixed to the threaded sleeve via a connecting rod.

7. The gripping device according to claim 4, characterized in that: It also includes a second grabbing mechanism for grabbing the insulating plate of the high-voltage switch cabinet, wherein the second grabbing mechanism is arranged between the two first grabbing mechanisms and is arranged on the moving beam.

8. The gripping device according to claim 7, characterized in that: The second grabbing mechanism includes a second hook plate and a second electric push rod. The second hook plate is rotatably arranged on the other end of the base opposite to the end where the cantilever is arranged. A second clamping groove is formed in the second hook plate for clamping a preset clamping portion on the insulating plate. The second electric push rod is pivotally connected to the top end of the cantilever and the second hook plate at the same time.

9. The gripping device according to claim 1, characterized in that: Both ends of the moving beam are connected with sliding guide blocks, which are used to be installed on the external track to realize the overall movement of the grabbing device.

10. An intelligent transport vehicle, characterized in that: It comprises a frame, a lifting device, a track assembly, a push-pull assembly and the grabbing device described in any one of claims 1 to 9; the lifting device is arranged on the frame, the track assembly is arranged on the lifting device and is driven by the lifting device to rise and fall, the push-pull assembly is arranged on the track assembly, and the grabbing device is arranged on the push-pull assembly and is driven by the push-pull assembly to move on the track assembly.

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