A portable 10KV fast knife switch spring replacement tool

Abstract

The present invention discloses a portable 10KV fast knife switch spring replacement special tool, comprising a trolley guide groove, the top of the trolley guide groove is fixedly connected with an upper pressure plate, a screw is arranged in the upper pressure plate, the top of the screw passes through the upper pressure plate, the top of the screw is fixedly connected with a hexagonal head, an operating rod is connected to the hexagonal head, a bearing pressure plate is arranged on the top of the upper pressure plate, the middle part of the bearing pressure plate is movably connected with the screw through a screw bearing, the bearing pressure plate is fixedly connected with the upper pressure plate through a hexagonal screw, a trolley is arranged on the outer surface of the screw, a threaded sleeve is fixedly connected inside the trolley, the threaded sleeve is threadedly connected with the screw, a lower pressure plate is fixedly connected to the side of the trolley away from the trolley guide groove, and a bearing assembly is connected to the side of the trolley close to the trolley guide groove. The present invention is easy to carry, flexible to assemble, and can reduce operation time and power outage time.

Description

Technical Field

[0001] The invention relates to the technical field of high-voltage cabinet tools, in particular to a portable 10KV special tool for quickly replacing a knife switch spring. Background Art

[0002] At present, there are problems such as low maintenance efficiency, poor quality, and difficult installation when replacing the spring of the 10kV high-voltage cabinet grounding knife switch in the substation. With the increase in the number of years and times of operation of the high-voltage switch cabinet, and the increasing demand for high-quality electricity services on the power consumption side, according to the current relevant regulations on primary equipment maintenance and inspection, it is required to carry out periodic inspection and maintenance of the high-voltage switch cabinet in operation; at the same time, facing the dual pressure of equipment elimination such as rust on the spring of the fast grounding knife switch, aging and cracking of the base, and fatigue fracture of the spring, it is necessary to replace the spring of the fast grounding knife switch. The traditional operation method is cumbersome when removing and reinstalling the spring, the operation method has low reliability and long operation time, which indirectly affects the power outage time of the user, and the space inside the high-voltage cabinet is small, which can only accommodate a single person to operate, which increases the difficulty of the operation and easily causes personnel to be pinched, low work efficiency, and insufficient safety. Therefore, a portable 10kV fast ground knife spring replacement special tool is needed.

[0003] Currently, no effective solution has been proposed for the problems in the related technologies. Summary of the invention

[0004] The object of the present invention is to provide a portable 10KV special tool for quickly replacing knife switch springs to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical scheme: a portable 10KV special tool for replacing a fast knife gate spring, comprising a trolley guide groove, an upper pressure plate fixedly connected to the top of the trolley guide groove, a screw rod arranged in the upper pressure plate, the top of the screw rod passes through the upper pressure plate and is located above the upper pressure plate, a hexagonal head fixedly connected to the top of the screw rod, an operating rod connected to the hexagonal head, a bearing pressure plate arranged on the top of the upper pressure plate, the middle part of the bearing pressure plate movably connected to the screw rod through a screw bearing, the bearing pressure plate is fixedly connected to the upper pressure plate through a hexagonal screw, a trolley is arranged on the outer surface of the screw rod, a threaded sleeve is fixedly connected to the interior of the trolley, the threaded sleeve is threadedly connected to the screw rod, a side of the trolley away from the trolley guide groove is fixedly connected to a lower pressure plate, a side of the trolley close to the trolley guide groove is connected to a bearing assembly, a fast knife gate spring is arranged between the upper pressure plate and the lower pressure plate, and a pin sleeve is arranged between the fast knife gate spring and the lower pressure plate.

[0006] Furthermore, the bearing assembly includes connecting rod 1, connecting rod 2, bearing 1 and bearing 2. Connecting rod 1 is fixedly connected to one side of the trolley close to the trolley guide groove. Both ends of connecting rod 1 are connected to the inner wall of bearing 1. Connecting rod 2 is fixedly connected to the middle part of connecting rod 1. Connecting rod 2 is connected to the inner wall of bearing 2. Bearing 1 and bearing 2 match the trolley guide groove.

[0007] Furthermore, an opening is formed on a side of the upper pressing plate away from the trolley guide groove.

[0008] Furthermore, an arc groove is formed on the lower pressing plate.

[0009] Furthermore, a circular hole matching the screw rod is formed on the upper pressing plate near the screw rod.

[0010] Compared with the prior art, the present invention has the following beneficial effects:

[0011] (1) The tool has a simple structure, is easy to carry, and is flexible to assemble, which reduces the difficulty of the operation and the pressure of equipment inspection and maintenance. It is efficient in operation, has high promotion value, is simple and practical to operate, and reduces operation time and power outage time.

[0012] (2) The bearing assembly not only serves to limit the position of the trolley, so that the trolley can only move up and down without rotating, but also reduces the friction resistance of the trolley guide groove during the movement of the trolley through the sliding of the bearing.

[0013] (3) The opening enables the top of the knife gate spring to enter the upper pressure plate easily and quickly, the arc groove enables the lower pressure plate to match the pin sleeve, and the round hole enables the screw to pass through the upper pressure plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 It is a structural schematic diagram of a portable 10KV fast knife switch spring replacement special tool according to an embodiment of the present invention;

[0016] Figure 2 1 is a top view of a portable 10KV fast knife switch spring replacement special tool according to an embodiment of the present invention;

[0017] Figure 3It is a schematic diagram of the connection structure between a fast knife switch spring and an upper pressing plate and a lower pressing plate in a portable 10KV fast knife switch spring replacement special tool according to an embodiment of the present invention;

[0018] Figure 4 It is a structural schematic diagram of a portable 10KV fast knife switch spring replacement special tool after rotating the operating lever according to an embodiment of the present invention;

[0019] Figure 5 The invention is a schematic diagram of the installation structure of a fast knife switch spring and a high-voltage cabinet in a portable special tool for replacing a 10KV fast knife switch spring according to an embodiment of the invention.

[0020] Reference numerals:

[0021] 1. Guide groove of trolley; 2. Upper pressure plate; 3. Screw; 4. Hexagonal head; 5. Operating lever; 6. Bearing pressure plate; 7. Screw bearing; 8. Hexagon socket screw; 9. Trolley; 10. Threaded sleeve; 11. Lower pressure plate; 12. Quick knife switch spring; 13. Pin sleeve; 14. Connecting rod 1; 15. Connecting rod 2; 16. Bearing 1; 17. Bearing 2; 18. Opening; 19. Arc groove; 20. High-voltage cabinet. DETAILED DESCRIPTION

[0022] In order to make the purpose, features and advantages of the present invention more obvious and easy to understand, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] The technical solution of the present invention is further described below with reference to the accompanying drawings and through specific implementation methods.

[0024] See also Figure 1-5 , a portable 10KV fast knife switch spring replacement special tool according to an embodiment of the present invention comprises a trolley guide groove 1, the interior of the trolley guide groove 1 is a "pin-shaped" structure, and an upper pressing plate 2 is fixedly connected to the top of the trolley guide groove 1. It should be noted that the upper pressing plate 2 and the trolley guide groove 1 are fixed by welding, and a screw 3 is arranged inside the upper pressing plate 2. The top of the screw 3 passes through the upper pressing plate 2 and is located above the upper pressing plate 2. A circular hole matching the screw 3 is opened near the upper pressing plate 2 near the screw 3, and the circular hole enables the screw 3 to pass through the upper pressing plate 2;

[0025] The top of the screw rod 3 is fixedly connected with a hexagonal head 4, and the hexagonal head 4 is connected with an operating rod 5. The top of the upper pressure plate 2 is provided with a bearing pressure plate 6, and the middle part of the bearing pressure plate 6 is movably connected with the screw rod 3 through a screw bearing 7. The bearing pressure plate 6 is fixedly connected with the upper pressure plate 2 through a hexagon socket screw 8, and a screw hole matching the hexagon socket screw 8 is opened on the upper pressure plate 2;

[0026] A trolley 9 is provided on the outer surface of the screw rod 3, a threaded sleeve 10 is fixedly connected to the interior of the trolley 9, the threaded sleeve 10 is threadedly connected to the screw rod 3, a lower pressing plate 11 is fixedly connected to the side of the trolley 9 away from the trolley guide groove 1, and a bearing assembly is connected to the side of the trolley 9 close to the trolley guide groove 1;

[0027] The bearing assembly needs to be explained. The bearing assembly includes a connecting rod 14, a connecting rod 2 15, a bearing 16 and a bearing 2 17. The trolley 9 is fixedly connected to a connecting rod 14 on one side close to the trolley guide groove 1. Both ends of the connecting rod 14 are connected to the inner wall of the bearing 16. The middle part of the connecting rod 14 is fixedly connected to a connecting rod 2 15. The connecting rod 2 15 is connected to the inner wall of the bearing 2 17. The bearing 16 and the bearing 2 17 match the trolley guide groove 1.

[0028] A quick knife gate spring 12 is provided between the upper pressure plate 2 and the lower pressure plate 11, and a pin sleeve 13 is provided between the quick knife gate spring 12 and the lower pressure plate 11. An opening 18 is provided on the side of the upper pressure plate 2 away from the trolley guide groove 1, and the opening 18 can facilitate the top of the quick knife gate spring 12 to enter the upper pressure plate 2. An arc groove 19 is provided on the lower pressure plate 11, and the arc groove 19 is located at the top of the lower pressure plate 11. The arc groove 19 can match the lower pressure plate 11 with the pin sleeve 13.

[0029] In order to facilitate understanding of the above technical solutions of the present invention, the working principle or operation mode of the present invention in the actual process is described in detail below.

[0030] In actual application, first place the quick knife gate spring 12 between the upper pressure plate 2 and the lower pressure plate 11, the top spring seat of the quick knife gate spring 12 is located on the opening 18 of the upper pressure plate 2, then place the pin sleeve 13 between the bottom spring seat of the quick knife gate spring 12 and the lower pressure plate 11, the arc groove 19 of the lower pressure plate 11 can match the pin sleeve 13, then rotate the hexagonal head 4 by turning the operating lever 5, so that the screw 3 rotates, and the threaded sleeve 10 inside the trolley 9 moves upward due to the rotation of the screw 3. Under the limit of the bearing assembly, the trolley 9 only moves but does not rotate. After compressing the quick knife gate spring 12 to a suitable size, the quick knife gate spring 12 is placed on the high-voltage cabinet 20 through a tool. The installation place of the knife switch spring 12 is inserted into the upper and lower ends, and the ring finger is inserted, and the pin is locked with the retaining ring. Then the operating rod 5 is rotated counterclockwise to loosen the special tool. The tool combines the lever principle with the rotating screw to convert the rotation amount of the screw into the compression amount of the spring, which can minimize the working space. The spring can be compressed by twisting the operating rod 5 with one hand, reducing the difficulty of disassembling the spring. The "pin-shaped" structure of the trolley guide groove design and the matching bearing assembly design can prevent the spring from being compressed and offset, and at the same time can reduce the friction resistance caused by the stress in the process of compressing the spring, so that the operator can operate with one hand, achieving a safe, reliable, efficient and fast disassembly and assembly effect.

[0031] As described above, the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features thereof may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A portable 10KV fast knife switch spring replacement special tool, characterized in that: The invention comprises a trolley guide groove (1), the top of which is fixedly connected to an upper pressure plate (2), a screw rod (3) is arranged inside the upper pressure plate (2), the top of the screw rod (3) passes through the upper pressure plate (2) and is located above the upper pressure plate (2), the top of the screw rod (3) is fixedly connected to a hexagonal head (4), an operating rod (5) is connected to the hexagonal head (4), a bearing pressure plate (6) is arranged on the top of the upper pressure plate (2), the middle part of the bearing pressure plate (6) is movably connected to the screw rod (3) through a screw bearing (7), and the bearing pressure plate (6) is connected to the upper pressure plate (2) through a hexagonal screw (8). The pressure plate (2) is fixedly connected, a trolley (9) is provided on the outer surface of the screw rod (3), a threaded sleeve (10) is fixedly connected inside the trolley (9), and the threaded sleeve (10) is threadedly connected to the screw rod (3), a side of the trolley (9) away from the trolley guide groove (1) is fixedly connected to a lower pressure plate (11), and a side of the trolley (9) close to the trolley guide groove (1) is connected to a bearing assembly, a quick knife gate spring (12) is provided between the upper pressure plate (2) and the lower pressure plate (11), and a pin sleeve (13) is provided between the quick knife gate spring (12) and the lower pressure plate (11); The bearing assembly comprises a connecting rod 1 (14), a connecting rod 2 (15), a bearing 1 (16) and a bearing 2 (17); the trolley (9) is fixedly connected with a connecting rod 1 (14) on one side close to the trolley guide groove (1); both ends of the connecting rod 1 (14) are connected to the inner wall of the bearing 1 (16); the middle part of the connecting rod 1 (14) is fixedly connected with a connecting rod 2 (15); the connecting rod 2 (15) is connected to the inner wall of the bearing 2 (17); the bearing 1 (16) and the bearing 2 (17) match the trolley guide groove (1).

2. A portable 10KV fast knife switch spring replacement special tool according to claim 1, characterized in that: An opening (18) is formed on a side of the upper pressing plate (2) away from the trolley guide groove (1).

3. A portable 10KV fast knife switch spring replacement special tool according to claim 1, characterized in that: The lower pressing plate (11) is provided with an arc-shaped groove (19).

4. A portable 10KV fast knife switch spring replacement special tool according to claim 1, characterized in that: The upper pressing plate (2) is provided with a circular hole matching the screw rod (3) near the screw rod (3).

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