Automatic flip device for trolley circuit breaker

Abstract

The present invention discloses an automatic flipping device for a trolley circuit breaker, which can upgrade and flip the trolley circuit breaker through hydraulic assistance, and can also reliably and efficiently assist the maintenance process of the trolley circuit breaker, especially the bottom maintenance process. The present invention includes a forklift lifting frame, on which a forklift steel plate that is lifted and lowered under the action of hydraulic power is arranged; a load-bearing steel plate is welded to the front end surface of the forklift steel plate, and the far end of the load-bearing steel plate is rotatably mounted on the back plate of a gripping head assembly; the gripping head assembly includes a back plate, and the two sides of the back plate are side plates, which are a left side plate and a right side plate respectively; the bottom of the opposite side of the side plate is provided with a slide rail for supporting and sliding into the bottom of the trolley circuit breaker; a plurality of circuit breaker positioning holes for limiting the position of the trolley circuit breaker are arranged on the side plate, and after the trolley circuit breaker slides into the gripping head assembly, the position of the trolley circuit breaker is limited by the circuit breaker positioning pin inserted into the circuit breaker positioning hole at the front end of the trolley circuit breaker.

Description

Technical Field

[0001] The invention relates to an auxiliary moving and turning device for a trolley circuit breaker, which is specifically used for the translation, lifting movement and tilting and turning of the trolley circuit breaker during the maintenance process. Background Art

[0002] Circuit breakers with voltage levels of 35kV and below in substations are generally placed in a central switch cabinet, forming a trolley circuit breaker with the trolley base. This type of circuit breaker has the characteristics of complex structure, heavy weight, difficult to carry, and difficult to repair at the bottom of the trolley. Once a fault occurs at the bottom, the trolley circuit breaker is usually removed from the transport trolley by manpower and turned over for maintenance. During the turning process, permanent damage is easily caused to the arc extinguishing chamber in the key part of the middle and upper parts, which can easily damage the equipment. A large number of people are required to carry it during this process, which poses a great safety hazard and takes a long time. In order to improve the quality and efficiency of maintenance and eliminate maintenance hazards, it is urgent to design a trolley circuit breaker maintenance flip car to achieve the goal of convenient transportation, safety, efficiency, and high applicability of circuit breaker maintenance work. At present, there is no such equipment.

[0003] At present, the bottom fault of the trolley circuit breaker can only be handled by manual handling. It takes 4-5 people to lift the trolley circuit breaker from the transport cart and flip it on the ground. During the flipping process, soft objects are placed on the ground and the vulnerable part of the trolley circuit breaker is placed on it to prevent hard contact damage. In the prior art, the maintenance process of the trolley circuit breaker has the following defects:

[0004] 1. It consumes manpower. The trolley circuit breaker is large in size, and the average weight of equipment from different manufacturers is between 80 and 300 kg. There is no special equipment to support the maintenance of the trolley chassis, and a large number of people are required to lift it from the transport trolley.

[0005] 2. There are great safety hazards. There is no special handle on the base of the circuit breaker trolley for grabbing. During the process of transportation and adjusting the angle, if someone accidentally lets go of it, the trolley circuit breaker will fall, and even worse, it will cause injuries and disabilities, which poses a great safety risk.

[0006] 3. It is easy to cause equipment damage. After the trolley circuit breaker falls to the ground, during the overturning and maintenance process, the arc extinguishing chamber of the circuit breaker may be damaged during contact with the ground, causing permanent damage.

[0007] 4. The maintenance angle is limited, which is not convenient for maintenance. After the circuit breaker is transported to the ground, the angle and height of the equipment cannot be changed, and the work efficiency of the maintenance personnel will be greatly reduced. Summary of the invention

[0008] The technical problem to be solved by the present invention is to provide an automatic flipping device for a trolley circuit breaker in view of the deficiencies in the above-mentioned prior art, which can upgrade and flip the trolley circuit breaker through hydraulic assistance, and can also reliably and efficiently assist the maintenance process of the trolley circuit breaker, especially the bottom maintenance process.

[0009] In order to achieve the above object, the present invention discloses the following technical solutions:

[0010] The automatic turning device of the trolley circuit breaker comprises a forklift lifting frame, on which a forklift steel plate which is raised and lowered under the action of hydraulic power is arranged;

[0011] A load-bearing steel plate is welded on the front end surface of the forklift steel plate, and the far end of the load-bearing steel plate is rotatably mounted on the back plate of the gripping head assembly;

[0012] The gripper assembly comprises a back plate, and the two sides of the back plate are side plates, which are a left side plate and a right side plate respectively; the bottom of the side plates facing each other is provided with a slide rail for supporting and sliding into the bottom of the trolley circuit breaker; the side plates are provided with a plurality of circuit breaker positioning holes for limiting the position of the trolley circuit breaker, and after the trolley circuit breaker slides into the gripper assembly, the position of the trolley circuit breaker is limited by the circuit breaker positioning pins inserted into the circuit breaker positioning holes at the front end of the trolley circuit breaker;

[0013] A hydraulic mechanism is connected between the back plate of the gripping head assembly and the forklift steel plate. The hydraulic mechanism includes a base and a telescopic rod that is telescopic under hydraulic pressure. The base is hingedly mounted on the forklift steel plate through an upper hinge, and the telescopic rod is hingedly mounted on the back plate through a lower hinge seat.

[0014] As a preferred embodiment of the present invention: an installation groove is provided on the bottom surface of the forklift steel plate, and the upper hinge is installed in the installation groove; at least two limit screws are arranged along the horizontal direction and toward the forklift steel plate at a position close to the bottom surface of the back plate; when the side plate of the gripping head assembly is in the horizontal direction, the distal end of the limit screw contacts the surface of the forklift steel plate.

[0015] As a preferred embodiment of the present invention: two baffles are installed near the upper part of the above-mentioned back plate, and the two sides of the load-bearing steel plate away from the forklift steel plate extend out of the rotating shaft rotatably installed on the baffle; the hydraulic mechanism drives the gripper assembly to flip at an angle of β, and 0<β≤60°.

[0016] As a preferred embodiment of the present invention: it also includes at least one supporting link, the upper end of the supporting link is rotatably mounted on the fixed part of the forklift lifting frame, and the lower end of the supporting link is connected to the link positioning hole opened on the side plate through a link positioning pin.

[0017] As a preferred embodiment of the present invention: there are two supporting connecting rods, which are respectively installed on the left side plate and the right side plate.

[0018] As a preferred embodiment of the present invention: there are two limit screws, which are symmetrically installed at positions close to both sides of the back plate; a rubber pad is installed on the side of the limit screw away from the back plate.

[0019] As a preferred embodiment of the present invention: it also includes at least one supporting link, the upper end of the supporting link is rotatably mounted on the fixed part of the forklift lifting frame, and the lower end of the supporting link is rotatably mounted on the side plate, and the supporting link is a telescopic link that can be fixed by screws.

[0020] As a preferred embodiment of the present invention: at least one of the two side panels is slidably mounted on the back panel, and a positioning component for simultaneously passing through the back panel and the slidably mounted side panel is provided on the back panel, and the positioning component includes a plurality of positioning through holes correspondingly opened on the back panel and the slidably mounted side panel, and a positioning pin for inserting into the positioning through holes.

[0021] As a preferred embodiment of the present invention: the forklift lifting frame is installed on a forklift platform, and the forklift platform includes movable running wheels.

[0022] The beneficial effects of the present invention are:

[0023] The automatic turning device for a handcart circuit breaker disclosed in the present invention comprises a forklift lifting frame, on which a forklift steel plate which is lifted and lowered under the action of hydraulic power is arranged; the forklift lifting frame part is based on the structural principle of a forklift, so that the entire power system is mature and reliable;

[0024] The front end surface of the forklift steel plate of the present invention is welded with a load-bearing steel plate, and the far end of the load-bearing steel plate is rotatably mounted on the back plate of the gripping head assembly; the load-bearing steel plate serves as a support point for the load bearing and the entire action, and after being reliably welded with the forklift steel plate, the structure is reliable and durable;

[0025] The gripping head assembly of the present invention comprises a back plate, and the two sides of the back plate are side plates, which are a left side plate and a right side plate respectively; the bottom of the side plates facing each other is provided with a slide rail for supporting and sliding into the bottom of the trolley circuit breaker; a plurality of circuit breaker positioning holes for limiting the position of the trolley circuit breaker are provided on the side plates, and the position of the trolley circuit breaker is limited by the circuit breaker positioning pins inserted into the circuit breaker positioning holes at the front end of the trolley circuit breaker after the trolley circuit breaker slides into the gripping head assembly; the gripping head assembly is a brand-new assembly designed for the trolley circuit breaker, which can realize the smooth sliding in, positioning, and supporting of the trolley circuit breaker, as well as reliable support and limitation during the whole action process; the side plates serve as a supporting frame, and after the slide rails are installed, the trolley circuit breaker can slide in smoothly, and after the trolley circuit breaker slides in, the circuit breaker positioning pins can be inserted into the corresponding front end limit of the trolley circuit breaker according to the different sizes of the trolley circuit breaker, so that it can not only reliably support and limit, but also adapt to circuit breakers of different specifications;

[0026] A hydraulic mechanism is connected between the back plate of the gripping head assembly of the present invention and the forklift steel plate. The hydraulic mechanism includes a base and a telescopic rod that is telescopic under hydraulic pressure. The base is hingedly mounted on the forklift steel plate through an upper hinge, and the telescopic rod is hingedly mounted on the back plate through a lower hinge seat. The power source of the hydraulic mechanism is the forklift structure, which is convenient and reliable. After the telescopic rod of the hydraulic mechanism is extended, the back plate is supported to flip up, so the bottom of the trolley circuit breaker can be directly inspected and repaired; generally, the flip angle is controlled within 60 degrees to achieve the purpose of inspecting the bottom. The traditional manual method without the assistance of the device of the present invention is to flip the circuit breaker as a whole 90 degrees, which has safety hazards and consumes too much physical strength. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of a specific embodiment of the present invention;

[0028] Figure 2 It is a schematic diagram of the decomposed structure of a specific embodiment of the present invention;

[0029] Figure 3 It is a schematic structural diagram of a specific embodiment of the present invention in a side view direction.

[0030] Description of reference numerals:

[0031] 1-forklift steel plate, 2-mounting slot, 3-hydraulic mechanism, 4-upper hinge, 5-load-bearing steel plate, 6-lower hinge, 7-limit screw, 8-baffle, 9-right side plate, 10-connecting rod locating hole, 11-connecting rod locating pin, 12-left side plate, 13-slide rail, 14-circuit breaker locating hole, 15-forklift lifting frame, 16-handcart circuit breaker, 17-support connecting rod, 18-extension bracket. DETAILED DESCRIPTION

[0032] The specific implementation of the present invention is described below in conjunction with the accompanying drawings and embodiments:

[0033] like Figure 1-3 As shown, it shows a specific embodiment of the present invention. As shown in the figure, the automatic flipping device for a handcart circuit breaker disclosed in the present invention comprises a forklift lifting frame 15, on which a forklift steel plate 1 which is lifted and lowered under the action of hydraulic power is arranged;

[0034] A load-bearing steel plate 5 is welded to the front end surface of the forklift steel plate 1, and the far end of the load-bearing steel plate 5 is rotatably mounted on the back plate of the gripping head assembly;

[0035] The gripper assembly comprises a back plate, and the two sides of the back plate are side plates, which are a left side plate 12 and a right side plate 9 respectively; the bottom of the side plates facing each other is provided with a slide rail 13 for supporting and sliding into the bottom of the trolley circuit breaker 16; the side plates are provided with a plurality of circuit breaker positioning holes 14 for limiting the position of the trolley circuit breaker 16, and after the trolley circuit breaker 16 slides into the gripper assembly, the position of the trolley circuit breaker 16 is limited by the circuit breaker positioning pin inserted into the circuit breaker positioning hole 14 at the front end of the trolley circuit breaker 16;

[0036] A hydraulic mechanism 3 is connected between the back plate of the gripping head assembly and the forklift steel plate 1. The hydraulic mechanism 3 includes a base and a telescopic rod that is telescopic under hydraulic pressure. The base is hingedly mounted on the forklift steel plate 1 through an upper hinge 4, and the telescopic rod is hingedly mounted on the back plate through a lower hinge seat 6.

[0037] It should be noted that the present invention makes reference to the forklift lifting frame and hydraulic part that are separated by a hydraulic forklift because they belong to the prior art or the well-known structural principle; the bottom of the forklift lifting frame does not need the overly complicated structure of the hydraulic forklift and only needs to be provided with two horizontal movable plates with lockable rotating wheels; in this way, effective movement and support can be achieved.

[0038] As a preferred embodiment of the present invention, Figure 2 and 3 As shown: the bottom surface of the forklift steel plate 1 is provided with a mounting groove 2, and the upper hinge 4 is installed in the mounting groove; at least two limit screws 7 are arranged along the horizontal direction and toward the forklift steel plate 1 at the position of the back plate near the bottom surface; when the side plate of the gripper assembly is in the horizontal direction, the distal end of the limit screw 7 contacts the surface of the forklift steel plate 1. This preferred embodiment specifically designs a mounting groove for the forklift steel plate, so that the mounting structure is more reliable and compact, and the design of the limit screw can ensure that the trolley circuit breaker remains horizontal and does not flip down after entering the slide rail.

[0039] As a preferred embodiment of the present invention, Figure 1-3 As shown: two baffles 8 are installed near the upper part of the back plate, and the load-bearing steel plate 5 extends out from both sides of the end away from the forklift steel plate 1 to rotate the rotating shaft installed on the baffle 8; the hydraulic mechanism 3 drives the gripper assembly to flip at an angle of β, and 0<β≤60°. In this preferred embodiment, the load-bearing steel plate part is cleverly designed as a passive rotating part. This part has a larger load-bearing capacity, so the design is more stable and reliable; the rotating shaft part is preferably provided with bearings to achieve smoother passive rotation. The flipping angle is sufficient for daily use. In specific use, the better way is to stop at every 15 degrees to meet the requirements, and there is no need to stop and support at every precise angle.

[0040] As a preferred embodiment of the present invention, Figure 1 and3 As shown: it also includes at least one supporting link 17, the upper end of the supporting link 17 is rotatably mounted on the fixed part of the forklift lifting frame 15, and the lower end of the supporting link 17 is connected to the link positioning hole 10 opened on the side plate through the link positioning pin. The design of the supporting link of this preferred embodiment is that when the circuit breaker is flipped to a suitable angle, the supporting link is inserted into the reserved positioning hole to perform secondary fixation on the circuit breaker.

[0041] As a preferred embodiment of the present invention, as shown in the figure: there are two supporting connecting rods 17, which are respectively installed on the left side plate 12 and the right side plate 9. Designing two supporting connecting rods will make the support more stable and the flipping process more stable and reliable.

[0042] As a preferred embodiment of the present invention, Figure 2 and 3 As shown: there are two limit screws 7, which are symmetrically installed at the positions near the two sides of the back plate; a rubber pad is installed on the side of the limit screw 7 away from the back plate. The design of the two limit screws in this preferred embodiment can perform reliable horizontal limit, and the design of the rubber pad can prevent the positioning screws from damaging the forklift steel plate.

[0043] As a preferred embodiment of the present invention, Figure 2 and 3 As shown: it also includes at least one supporting link 17, the upper end of the supporting link 17 is rotatably mounted on the fixed part of the forklift lifting frame 15, and the lower end of the supporting link 17 is rotatably mounted on the side plate, and the supporting link 17 is a telescopic link that can be fixed by screws. In this preferred embodiment, another supporting link is disclosed, which is similar to the supporting link of a window, which can be telescopically adjusted and can also be fixed at a specific position, so the structure is reliable and telescopic and convenient.

[0044] As a preferred embodiment of the present invention, Figure 1-3 As shown: at least one of the two side plates is slidably mounted on the back plate, and a positioning assembly is provided on the back plate for simultaneously passing through the back plate and the slidably mounted side plate, and the positioning assembly includes a plurality of corresponding positioning through holes opened on the back plate and the slidably mounted side plate, and positioning pins for inserting into the positioning through holes. The spacing between the side plates on both sides of the gripper assembly can be adjusted manually, and the positioning pins are inserted for positioning after adjusting the clamping spacing size, so the clamping size of the clamp can be adjusted, which is suitable for trolley circuit breakers from different manufacturers. Manually adjust the spacing between the side plates on both sides of the clamp, and when the spacing is adjusted to the appropriate position, use the inserted positioning pins to fix it, give the circuit breaker an upward force, and use the slide self-locking mechanism to ensure that the circuit breaker is reliably fixed on the gripper assembly during the flipping process.

[0045] As a preferred embodiment of the present invention, as shown in the figure: the forklift lifting frame 15 is installed on a forklift platform, and the forklift platform includes movable running wheels. This embodiment can make the translation lifting and lowering maintain a reliable operation process, and the on-site maintenance operation is more flexible and convenient.

[0046] In summary, the purpose of the present invention is to address the deficiencies in the above-mentioned prior art and propose a trolley circuit breaker flipping vehicle, which can firmly grasp the trolley circuit breaker and flip it over, making it easier for workers to inspect and repair it. At the same time, the vehicle body has wheels, which can be moved freely. Specifically,

[0047] The present invention designs a new type of gripper to be used in combination with a hydraulic forklift, which is composed of a forklift part, a connecting part and a gripper part. The forklift part is composed of a forklift steel plate and a load-bearing steel plate. Based on the hydraulic forklift, the original fork legs are removed, and the load-bearing steel plate and the forklift steel plate are welded into one. The load-bearing steel plate is mainly used for bearing weight. The connecting part is composed of a hydraulic mechanism and a supporting connecting rod. The two ends of the hydraulic mechanism are respectively connected to the forklift steel plate and the gripper through ball heads, and when the hydraulic mechanism is actuated, the gripper is pushed to rotate upward. One end of the supporting connecting rod is fixed to the vertical support structure of the forklift, and the other end is connected to the reserved positioning hole of the gripper side plate. When the circuit breaker is flipped to a suitable angle, the supporting connecting rod is inserted into the reserved positioning hole to fix the circuit breaker for a second time (similar to the window positioning support rod). As shown in the figure, the gripper part is composed of a side plate, a side bottom plate, a slide rail, a circuit breaker limiting mechanism, a positioning pin and a gripper limiting screw. The side plate can be moved left and right to adjust the clamping distance. After adjusting the clamping size, insert the positioning pin to clamp and fix the two sides of the trolley circuit breaker. The side bottom plate is equipped with a slide rail that facilitates the entry and exit of the circuit breaker roller and a circuit breaker limit mechanism, which is used for the entry and exit of the bottom roller of the circuit breaker and the fixation of the circuit breaker. To ensure the safety of maintenance work, two positioning screws are set on the side of the clamping plate close to the forklift to ensure that the circuit breaker trolley remains horizontal after entering the track and does not flip down.

[0048] By controlling the hydraulic mechanism to push the gripper against the lower steel plate on the forklift side, the gripper can be rotated upward by 45 to 60 degrees, enabling maintenance personnel to perform maintenance work on the bottom of the circuit breaker. Ultimately, the gripper can be used to fix the circuit breaker trolley and flip it over according to maintenance needs, forming a flippable clamping mechanism for circuit breaker trolley maintenance.

[0049] The present invention can achieve the following functions:

[0050] (1) The trolley circuit breaker can be quickly flipped over to facilitate bottom maintenance;

[0051] (2) The hydraulic mechanism is powerful, easy to operate, improves efficiency, and achieves rapid handling; the lifting structure and the rotation of the grab head are all equipped with hydraulic mechanisms;

[0052] (3) The fixing of the supporting connecting rod and the slideways and self-locking mechanisms of the bottom plates on both sides of the clamp ensure that the circuit breaker remains stable and does not fall off during the flipping process, which is safe and reliable;

[0053] (4) The spacing between the two side plates of the clamping plate can be adjusted manually. After adjusting the clamping spacing, insert the positioning pin for positioning. Therefore, the clamping size of the clamp can be adjusted, which is suitable for handcart circuit breakers of different manufacturers. Manually adjust the spacing between the two side plates of the clamping plate. When the spacing is adjusted to the appropriate position, insert the positioning pin to fix it, give the circuit breaker an upward force, and ensure that the circuit breaker is reliably fixed on the gripping head during the flipping process through the slide self-locking mechanism.

[0054] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the field without departing from the purpose of the present invention. These changes involve related technologies well known to those skilled in the art, which all fall within the scope of protection of the patent of the present invention.

[0055] Many other changes and modifications may be made without departing from the concept and scope of the present invention.It should be understood that the present invention is not limited to the specific embodiments, and the scope of the present invention is defined by the appended claims.

Claims

1. The automatic flipping device for the trolley circuit breaker is characterized by: It includes a forklift lifting frame, on which a forklift steel plate that is raised and lowered under the action of hydraulic power is arranged; A load-bearing steel plate is welded on the front end surface of the forklift steel plate, and the far end of the load-bearing steel plate is rotatably mounted on the back plate of the gripping head assembly; The gripper assembly comprises a back plate, and the two sides of the back plate are side plates, which are a left side plate and a right side plate respectively; the bottom of the side plates facing each other is provided with a slide rail for supporting and sliding into the bottom of the trolley circuit breaker; the side plates are provided with a plurality of circuit breaker positioning holes for limiting the position of the trolley circuit breaker, and after the trolley circuit breaker slides into the gripper assembly, the position of the trolley circuit breaker is limited by the circuit breaker positioning pins inserted into the circuit breaker positioning holes at the front end of the trolley circuit breaker; A hydraulic mechanism is connected between the back plate of the gripping head assembly and the forklift steel plate. The hydraulic mechanism includes a base and a telescopic rod that is telescopic under hydraulic pressure. The base is hingedly mounted on the forklift steel plate through an upper hinge, and the telescopic rod is hingedly mounted on the back plate through a lower hinge seat. The bottom surface of the forklift steel plate is provided with a mounting groove, and the upper hinge is installed in the mounting groove; at least two limit screws are arranged along the horizontal direction and toward the forklift steel plate at a position close to the bottom surface of the back plate; when the side plate of the gripping head assembly is in the horizontal direction, the distal end of the limit screw contacts the surface of the forklift steel plate; Two baffles are installed near the upper part of the back plate, and the two sides of the end of the load-bearing steel plate away from the forklift steel plate extend out of the rotating shafts rotatably installed on the baffles; the hydraulic mechanism drives the gripper assembly to flip at an angle of β, and 0<β≤60°; It also includes at least one supporting link, the upper end of which is rotatably mounted on the fixed part of the forklift lifting frame, and the lower end of which is connected to a link positioning hole provided on the side plate through a link positioning pin; There are two limit screws, which are symmetrically installed at positions close to both sides of the back plate; a rubber pad is installed on the side of the limit screw away from the back plate; It also comprises at least one supporting link, the upper end of the supporting link is rotatably mounted on the fixed part of the forklift lifting frame, the lower end of the supporting link is rotatably mounted on the side plate, and the supporting link is a telescopic link that can be fixed by screws.

2. The automatic turning device for a trolley circuit breaker according to claim 1, characterized in that: There are two supporting connecting rods, which are respectively installed on the left side plate and the right side plate.

3. The automatic turning device for a trolley circuit breaker according to claim 1, characterized in that: At least one of the two side panels is slidably mounted on the back panel, and a positioning component is provided on the back panel for simultaneously passing through the back panel and the slidably mounted side panel. The positioning component includes a plurality of positioning through holes correspondingly opened on the back panel and the slidably mounted side panel, and a positioning pin for inserting into the positioning through holes.

4. The automatic turning device for a trolley circuit breaker according to claim 1, characterized in that: The forklift lifting frame is installed on a forklift platform, and the forklift platform includes movable running wheels.

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