Detachable telescopic multifunctional grounding knife switch crank

Abstract

The utility model discloses a detachable telescopic multifunctional grounding knife switch crank, which comprises an operating rod and is characterized in that the whole operating rod is of a Z-shaped structure, one end of the operating rod is provided with a magnetic suction joint, a ratchet wheel sleeve is arranged in the magnetic suction joint, and a movable arm claw is matched with the ratchet wheel sleeve; the ratchet wheel sleeve is provided with a first inner hexagonal counter bore, a first magnet is arranged at the bottom end of the first inner hexagonal counter bore, and a first magnet hole coaxial with the center line of the first inner hexagonal counter bore is formed in the center of the first magnet. And a movable connecting rod is matched with the first inner hexagonal counter bore. One rod is provided with a plurality of screwdriver heads, can meet the configuration of various grounding knife-switches and switch crank screwdriver heads of different specifications, can carry out switching operation under the working condition that the rotation angle is limited, is rapid and accurate in positioning, is not liable to fall off when the screwdriver heads are adsorbed, is labor-saving in operation, is convenient to carry, is easy to recognize, is not liable to be mixed, and is beneficial to on-site operation and storage.

Description

Technical Field

[0001] The utility model relates to a power station equipment maintenance equipment technology, in particular to a detachable and retractable multifunctional ground knife switch crank. Background Art

[0002] The switch wrenches used for the isolation operation of power equipment are of various forms. Different switches often require different crank wrenches, and many of them are special tools. For example, the patent announcement number is CN219094964U, an electric socket wrench, including a force rod and a handle, a connector is fixedly installed at one end of the force rod, a connecting tube is movably installed on the inner side of the connector, a socket head is installed in the middle of the connecting tube, fixed card slots are provided on the surfaces of both ends of the connecting tube, a partition is fixedly installed in the middle of the inner side of the connecting tube, a first spring is fixedly installed on both sides of the partition, the partition is connected to a moving column through the first spring, a mounting slot is provided on the moving column, a second spring is fixedly installed on the inner bottom of the mounting slot, and the moving column is connected to a card block through the second spring. Another example is a socket wrench for power engineering with patent announcement number CN212947499U, which includes a socket and a handle, one end of the socket is provided with a hexagonal groove, and one end of the handle is provided with a fixed block; the socket is fixed on the mounting sleeve; the mounting sleeve is provided on the fixed block; the two inner side walls of the mounting sleeve are provided with card slots; the fixed block is provided with a connecting device; one end of the fixed block is provided with a threaded hole; one end of the threaded hole is provided with a movable groove; both sides of the movable groove are provided with sliding grooves; the other end of the sliding groove passes through the side wall of the fixed block; the connecting device includes a threaded column threadedly connected to the threaded hole, a block provided at one end of the threaded column and slidably provided in the movable groove, and a block slidably provided in the sliding groove; the end of the threaded column away from the block passes through the threaded hole and is fixed with a torsion block; the ends of the two blocks facing each other are provided with an inclined surface that slides with the peripheral surface of the block; one end of the block is engaged with the card slot. And so on.

[0003] When inspecting and repairing equipment in a pumped-storage power station, the isolation operation often requires the use of earthing switches and switch cranks. For example, the earthing switch cranks include 400V switch cranks, 10kV switch cranks, 18kV switch cranks, 18kV isolating switch cranks, 10kV earthing switch cranks, 18kV earthing switch cranks, etc. These cranks are large in size and heavy in weight, and are not easy to carry. Moreover, each crank has a different function, which is difficult to identify and easy to confuse. Not only is it easy to make a mistake when selecting, resulting in time-consuming and laborious operation, but switches in different positions cannot be replaced by other cranks, such as when the rotation angle is limited, which delays defect handling in an emergency, resulting in the inability to handle defects in the first place, resulting in risks such as untimely defect handling and accident expansion. At the same time, during manual operation, if the existing replaceable movable joints or tools such as those in the above-mentioned public technology are used, the movable joints are easy to fall off, making it more difficult for operators to control. Summary of the invention

[0004] The purpose of the present utility model is to solve the above problems and provide a multi-functional dismountable and telescopic ground knife switch crank. It has the characteristics of being dismountable, having length selection, diverse functions, simple model selection, the joint will not disengage during operation, convenient to carry, and time-saving in operation.

[0005] The above technical problems of the present utility model are mainly solved by the following technical solutions: A multi-functional dismountable and telescopic ground knife switch crank, including an operating rod, characterized in that the operating rod is integrally in a Z-shaped structure, one end of the operating rod is provided with a magnetic suction joint, a ratchet sleeve is arranged inside the magnetic suction joint, and a movable arm claw is arranged in cooperation with the ratchet sleeve; the ratchet sleeve has a first internal hexagonal counterbore, a first magnetic suction is arranged at the bottom end of the first internal hexagonal counterbore, and a first magnetic suction hole coaxial with the center line of the first internal hexagonal counterbore is arranged at the center of the first magnetic suction; a movable connecting rod is arranged in cooperation with the first internal hexagonal counterbore.

[0006] In the above-mentioned multi-functional dismountable and telescopic ground knife switch crank, preferably, the ratchet sleeve is arranged in an internal space composed of a handle base and a cover base, the movable arm claw is configured with a top-positioning spring, and the handle base is located at the end of the operating rod or is integrally formed with the operating rod.

[0007] In the above-mentioned multi-functional dismountable and telescopic ground knife switch crank, preferably, the movable arm claw has three working positions, namely a position for limiting the forward rotation of the ratchet sleeve, a position for limiting the reverse rotation of the ratchet sleeve, and a neutral position for completely disengaging from the ratchet sleeve.

[0008] In the above-mentioned multi-functional dismountable and telescopic ground knife switch crank, preferably, one end of the movable connecting rod is provided with an intermediate hexagonal prism in cooperation with the first internal hexagonal counterbore, and a positioning pin in cooperation with the first magnetic suction hole is arranged at the end of the intermediate hexagonal prism; the other end of the movable connecting rod is provided with a second internal hexagonal counterbore, a second magnetic suction is arranged at the bottom end of the second internal hexagonal counterbore, and a second magnetic suction hole coaxial with the center line of the second internal hexagonal counterbore is arranged at the center of the second magnetic suction.

[0009] In the above-mentioned multi-functional dismountable and telescopic ground knife switch crank, preferably, one end of the movable connecting rod is provided with an intermediate hexagonal prism and a positioning pin, and the other end of the movable connecting rod is provided with a second internal hexagonal counterbore and a second magnetic suction hole; a lengthening rod is arranged between one end and the other end of the movable connecting rod.

[0010] In the above-mentioned multi-functional dismountable and telescopic ground knife switch crank, preferably, one end of the lengthening rod is provided with a cross counterbore, a permanent magnet is arranged at the bottom end of the cross counterbore, and a cross block is arranged at the other end of the lengthening rod; the end of the part of the movable connecting rod in cooperation with the cross counterbore is provided with a cross head in cooperation with the cross counterbore, and the end of the part of the movable connecting rod in cooperation with the cross block is provided with a counterbore in cooperation with the cross block.

[0011] In the aforementioned detachable and retractable multifunctional ground knife switch crank, preferably, a handle is provided at one end of the operating rod, the handle is connected to the magnetic suction joint through a force rod, and an insulating layer is provided on the surface of the handle and the force rod.

[0012] This technical solution is mainly composed of an operating rod, a magnetic joint, a movable connecting rod, etc. The forward and reverse bidirectional rotation function is obtained by improving the conventional technology of the spur wheel and the movable arm claw, which overcomes the working conditions of limited rotation angle. Through the movable connecting rod and a pair of cranks, a variety of screwdriver bit configurations are obtained to meet the crank requirements of various specifications of ground cutters and switches. Since only a common crank, connecting rod and the required interchangeable screwdriver bits are configured, the amount of carrying is small, identification is relatively easy, and assembly is relatively simple.

[0013] The crank handle of this device is suitable for holding with both hands, and the operating lever adopts a Z-shaped structure, which is convenient for shaking the switch and the grounding knife with better force and less effort. The matching design of various magnetic suction and magnetic suction holes and the configuration of standardized hexagonal countersunk holes can quickly connect the crank handle and the interface of the bit, and it is not easy to fall off, ensuring that the bit is inserted into the interface and shaken in and out of the switch or grounding knife counterclockwise or clockwise. Reliable and stable force.

[0014] The setting of the connecting rod can solve some operations that require shaking the switch ground knife over a long distance.

[0015] This device can be selected according to the actual situation on site. For example, when the operating space is narrow or the switch ground knife has a short stroke, the connecting rod can be omitted and the operation can be carried out by connecting the crank handle and the bit. The crank handle, connecting rod and bit are small in size and can all be put into the tool bag, without the risk of accidentally touching the equipment when walking. The bit can be placed in the tool box. When emergency operation is required or an accident occurs, the bit tool box, crank handle and connecting rod can be directly brought to the site for operation, saving time and being convenient and safe during operation.

[0016] Therefore, compared with the prior art, the beneficial effects of the utility model are: one rod with multiple screwdriver bits, which can meet the configuration of various specifications of ground cutters and switch crank screwdriver bits, can be switched on and off under working conditions with limited rotation angles, has fast and accurate positioning, the screwdriver bits are adsorbed and not easy to fall off, saves effort in operation, is easy to carry, easy to identify and not easy to confuse, and is conducive to on-site operations and storage. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the utility model.

[0018] Figure 2 The utility model is a schematic diagram of a magnetic suction joint structure.

[0019] Figure 3 The utility model is a schematic diagram of a movable connecting rod structure.

[0020] Figure 4 This is a schematic structural view of an embodiment of an extended movable connecting rod of the present utility model.

[0021] Figure 5 This is a schematic structural view of an extended rod of the present utility model.

[0022] Figure 6 This is a schematic structural view of a bit head of the present utility model.

[0023] In the figure: 1 - handle, 2 - force - increasing rod, 3 - magnetic - absorption joint, 301 - handle base, 302 - cover base, 303 - ratchet sleeve, 3031 - first internal hexagonal counterbore, 3032 - first magnetic - absorption hole, 304 - movable arm claw, 305 - first magnetic absorption, 4 - movable connecting rod, 401 - positioning pin, 402 - intermediate hexagonal prism, 403 - second magnetic absorption, 404 - second magnetic - absorption hole, 405 - second internal hexagonal counterbore, 5 - bit head, 6 - extended rod, 601 - cross counterbore, 602 - permanent magnet, 603 - cross block. Specific embodiments

[0024] The technical solution of the present utility model will be further specifically described below through embodiments in conjunction with the drawings.

[0025] A disassemblable and telescopic multi - functional ground knife switch crank of this embodiment, as Figure 1 shown, includes an operating rod made of stainless - steel material. The operating rod has an overall Z - shaped structure. One end of the operating rod is provided with a rotatable handle 1. The handle 1 is connected to the magnetic - absorption joint 3 through the force - increasing rod 2. The center lines of the handle 1, the force - increasing rod 2, and the magnetic - absorption joint 3 are all perpendicular to the magnetic - absorption joint 3. Insulating layers are provided on the surfaces of the handle 1 and the force - increasing rod 2, which is beneficial for the hand feeling and safety.

[0026] One end of the force - increasing rod 2 of the operating rod is provided with a magnetic - absorption joint 3. A ratchet sleeve 303 is arranged inside the magnetic - absorption joint 3, and a movable arm claw 304 is arranged in cooperation with the ratchet sleeve 303. The ratchet sleeve 303 is arranged in the internal space composed of the handle base 301 and the cover base 302. The movable arm claw 304 is configured with a top - position spring. The handle base 301 is located at the end of the operating rod and is made into an integral structure with the operating rod during manufacturing. The movable arm claw 304 has three working positions, namely, the position for limiting the forward rotation of the ratchet sleeve 303, the position for limiting the reverse rotation of the ratchet sleeve 303, and the neutral position completely disengaged from the ratchet sleeve 303. The ratchet and pawl are the basis of the forward - and - reverse two - way wrench structure. As part of the conventional technology, its structure is simple and the assembly is convenient, and it can be customized or purchased.

[0027] See Figure 2, the ratchet socket 303 has a first countersunk hexagon socket 3031. [Note: For hexagons such as the first countersunk hexagon socket 3031 below, their cross-sections are all regular inner hexagons or regular hexagonal prisms]. At the bottom end of the first countersunk hexagon socket 3031, there is a tubular first magnetic attraction 305. At the center of the first magnetic attraction 305, there is a first magnetic attraction hole 3032 arranged coaxially with the center line of the first countersunk hexagon socket 3031, and the first magnetic attraction hole 3032 is a round hole.

[0028] A movable connecting rod 4 is provided in cooperation with the first countersunk hexagon socket 3031. As Figure 3 shown, one end of the movable connecting rod 4 is provided with an intermediate hexagonal prism 402 that cooperates with the first countersunk hexagon socket 3031, and a positioning pin 401 that cooperates with the first magnetic attraction hole 3032 is provided at the end of the intermediate hexagonal prism 402. The other end of the movable connecting rod 4 is provided with a second countersunk hexagon socket 405, and a tubular second magnetic attraction 403 is provided at the bottom end of the second countersunk hexagon socket 405. At the center of the second magnetic attraction 403, there is a second magnetic attraction hole 404 arranged coaxially with the center line of the second countersunk hexagon socket 405.

[0029] An embodiment of the extended movable connecting rod 4, as Figure 4 , Figure 5 shown, the movable connecting rod 4 is composed of three parts. One end is provided with an intermediate hexagonal prism 402 and a positioning pin 401, and the other end is provided with a second countersunk hexagon socket 405 and a second magnetic attraction hole 404. An extension rod 6 is arranged between the two ends. One end of the extension rod 6 is provided with a cross countersunk hole 601, and a permanent magnet 602 is provided at the bottom end of the cross countersunk hole 601. The other end of the extension rod 6 is provided with a cross block 603. Among them, at the end of the part of the movable connecting rod 4 that cooperates with the cross countersunk hole 601, there is a cross head that cooperates with the cross countersunk hole 601. At the end of the part of the movable connecting rod 6 that cooperates with the cross block 603, there is a countersunk hole that cooperates with the cross block 603. Similarly, a permanent magnet 602 is provided at the bottom of this countersunk hole.

[0030] The length of the extension rod 6 in the movable connecting rod 4 can be evaluated and customized according to the actual switch disconnector environment conditions in the project. Due to the standardized application of the cross blocks 603 and cross countersunk holes 601 at both ends, the extension rod 6 has good interchangeability. Due to the setting of the permanent magnet 602, the relative stability after assembly is also ensured.

[0031] Working principle and application: In actual application, the sizes of the second magnetic attraction hole 404 and the second countersunk hexagon socket 405 are set to be the same as those of the first countersunk hexagon socket 3031 and the first magnetic attraction hole 3032 to achieve the technical purpose of the best interchangeability.

[0032] The device can be equipped with multiple bits 5. One end of the bit 5 uniformly adopts a standard connection that matches the first countersunk hexagon socket 3031 and the first magnetic attraction hole 3032. The other ends of the bits 5 are respectively customized into interfaces that match various ends such as the 400V switch crank, the 10kV switch crank, the 18kV switch crank, the 18kV disconnecting switch crank, and so on. Since the magnetic attraction joint 3 has a two-way rotation function, it can meet the two operation requirements of opening and closing the switch. At the same time, the ratchet neutral gear can be used to perform switch operations under working conditions with limited rotation angle. When the operation site is narrow or the travel of the switch grounding knife is short, the extension rod 6 does not need to be used, and only the crank magnetic attraction joint 3 and the corresponding bit 5 need to be connected to perform the operation. When a long-distance operation of turning the switch grounding knife is required, the connecting rod 4 with the extension rod 6 can be replaced to complete the operation.

[0033] The above embodiments are illustrative of the present invention and not restrictive thereof. Any simple transformation of the structure of the present invention by those of ordinary skill in the art without departing from the principle of the technical solution and without creative efforts shall fall within the protection scope of the present invention.

Claims

1. A detachable and retractable multifunctional ground knife switch crank, including an operating rod, characterized in that The operating rod is in a Z-shaped structure as a whole, and a magnetic attraction joint (3) is provided at one end of the operating rod, a ratchet sleeve (303) is provided inside the magnetic attraction joint, and a movable arm claw (304) is provided in cooperation with the ratchet sleeve; the ratchet sleeve has a first hexagonal countersunk hole (3031), a first magnetic attraction (305) is provided at the bottom end of the first hexagonal countersunk hole, and a first magnetic attraction hole (3032) coaxially arranged with the center line of the first hexagonal countersunk hole is provided at the center of the first magnetic attraction; and a movable connecting rod (4) is provided in cooperation with the first hexagonal countersunk hole.

2. The detachable and retractable multifunctional ground knife switch crank handle according to claim 1 is characterized in that: The ratchet sleeve (303) is arranged in a built-in space formed by a handle seat (301) and a cover seat (302), the movable arm claw (304) is provided with a top spring, and the handle seat is located at the end of the operating rod or forms an integral structure with the operating rod.

3. The detachable and retractable multifunctional ground knife switch crank handle according to claim 1 is characterized in that: The movable arm claw (304) has three working positions, namely a position for limiting the forward rotation of the ratchet sleeve (303), a position for limiting the reverse rotation of the ratchet sleeve, and a neutral position for completely disengaging from the ratchet sleeve.

4. The detachable and retractable multifunctional ground knife switch crank according to claim 1 is characterized in that: One end of the movable connecting rod (4) is provided with an intermediate hexagonal prism (402) that cooperates with the first internal hexagonal countersunk hole (3031), and the end of the intermediate hexagonal prism is provided with a positioning pin (401) that cooperates with the first magnetic attraction hole (3032); the other end of the movable connecting rod is provided with a second internal hexagonal countersunk hole (405), the bottom end of the second internal hexagonal countersunk hole is provided with a second magnetic attraction (403), and the center of the second magnetic attraction is provided with a second magnetic attraction hole (404) coaxially arranged with the center line of the second internal hexagonal countersunk hole.

5. The detachable and retractable multifunctional ground knife switch crank handle according to claim 1 is characterized in that: One end of the movable connecting rod (4) is provided with a middle hexagonal prism (402) and a positioning pin (401), and the other end of the movable connecting rod is provided with a second inner hexagonal countersunk hole (405) and a second magnetic attraction hole (404); an extension rod (6) is provided between one end and the other end of the movable connecting rod.

6. The detachable and retractable multifunctional ground knife switch crank handle according to claim 5, characterized in that: One end of the extension rod (6) is provided with a cross countersunk hole (601), the bottom end of the cross countersunk hole is provided with a permanent magnet (602), and the other end of the extension rod is provided with a cross block (603); the end of the movable connecting rod (4) part that cooperates with the cross countersunk hole is provided with a cross head that cooperates with the cross countersunk hole, and the end of the movable connecting rod part that cooperates with the cross block is provided with a countersunk hole that cooperates with the cross block.

7. The detachable and retractable multifunctional ground knife switch crank handle according to claim 1 is characterized in that: A handle (1) is provided at one end of the operating rod, and the handle is connected to a magnetic suction joint (3) via a force-adding rod (2), and an insulating layer is provided on the surface of the handle and the force-adding rod.

Images