Manual operation mechanism of three-position load switch

Abstract

The utility model discloses a manual operation mechanism of a three-position load switch, and relates to the technical field of load switches. The device comprises a mounting plate, the top of the mounting plate is fixedly connected with an insulation box, and the right side of the insulation box is provided with an indication groove. When the pull rod is pulled rightwards, the pull rod drives the limiting rod to move rightwards, the limiting rod leaves the limiting hole, the limiting rod drives the limiting piece to compress the first spring, the left end of the limiting rod leaves the limiting hole, the knob is rotated, the butt joint hole and the limiting rod are staggered, the pull rod is loosened, the second gear blocks the limiting rod, and at the moment, the first spring is still in a compressed state. When a second gear rotates to a switching-on or grounding state, a first spring pushes a limiting piece to drive a limiting rod to move leftwards, and the limiting rod enters a limiting hole again, so that the situation that a worker continuously rotates the knob, so that the butt-joint rod and the insulating base are extruded, and the butt-joint rod and the insulating base are deformed is prevented; the device is damaged.

Description

Technical Field

[0001] The utility model belongs to the technical field of load switches, in particular to a manual operating mechanism of a three-position load switch. Background Art

[0002] A three-position load switch means that it has a closing position, an opening position, and a grounding position. Cutting off and isolating are different. Cutting off only means that the circuit has been disconnected and the load has been removed; isolation not only includes the cut-off state, but also indicates that the break between the power supply side and the load side is large. In the power industry, for the sake of safety, cutting off the load is not a sufficient condition for carrying out maintenance. Generally, there is a requirement for another obvious visible disconnection point, that is, the isolating break. The three-position switch actually integrates the functions of the isolating switch and the grounding switch, and is completed with one knife, so that mechanical interlocking can be achieved to prevent the main circuit from being energized and the grounding knife from being closed;

[0003] In the Chinese utility model patent with the announcement number CN212991013U, the utility model discloses a three-position load switch operating mechanism, which realizes the rotation of the contact blade by rotating the handle component, and the handle component drives the rotating shaft to rotate through the rotating shaft, the second bevel gear, the first bevel gear, the worm and the worm wheel, and utilizes the self-locking function of the worm and the worm wheel to realize the positioning of the contact blade, thereby improving the safety factor;

[0004] With respect to the above-mentioned related technologies, the inventor of the utility model believes that the following defects exist: since the contact blade is inside the electrical box, the device drives the contact blade to rotate by turning the handle. After the contact blade contacts the contact seat, the staff cannot detect the position of the contact blade and will continue to rotate the handle, causing the contact blade and the contact seat to be squeezed. Over a long period of time, the contact blade and the contact seat will be deformed, causing damage to the device. Utility Model Content

[0005] The utility model aims to provide a manual operating mechanism for a three-position load switch. By setting a limit rod, the docking rod is locked when the contact piece reaches the closed, isolated and grounded state to prevent the docking rod from squeezing the insulating base, thereby solving the problem that after the contact blade contacts the contact seat, the staff will not be able to detect and continue to rotate the handle, resulting in squeezing of the contact blade and the contact seat, which will cause the contact blade and the contact seat to be deformed for a long time and cause damage to the device.

[0006] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0007] The utility model is a manual operating mechanism of a three-position load switch, comprising a mounting plate, an insulating box is fixedly connected to the top of the mounting plate, an indicating groove is opened on the right side of the insulating box, and also comprises: a locking mechanism, the locking mechanism comprises a limit rod sleeved and arranged inside the insulating box, an end of the limit rod away from the insulating box is fixedly connected to a pull rod, a limit tube is fixedly connected to the inner wall of the right side of the insulating box, the limit rod is sleeved inside the limit tube, and this arrangement is convenient for the pull rod to move inside the docking rod.

[0008] Furthermore, a limiting plate is slidably connected inside the limiting tube, the limiting plate is sleeved inside the limiting tube, a first spring is fixedly connected to the right side of the limiting plate, a side of the first spring away from the limiting plate is fixedly connected to the right side inside the insulating box, and the limiting rod is sleeved inside the first spring. This arrangement allows the limiting plate to be pulled when the limiting rod is pulled, thereby squeezing the first spring.

[0009] Furthermore, an adjustment mechanism is provided inside the insulating box, and the adjustment mechanism includes a connecting rod sleeved inside the insulating box, and a pointer is fixedly connected to one end of the connecting rod away from the insulating box, and the pointer is located in the display slot, and a knob is fixedly connected to one end of the connecting rod away from the insulating box. This arrangement is to drive the pointer to rotate when the limit rod rotates, so that the position of the docking rod can be displayed.

[0010] Furthermore, the knob is located on the right side of the pointer, and the end of the connecting rod away from the knob is fixedly connected to the first gear, the bottom of the first gear is meshed with the second gear, the second gear is provided with a plurality of limiting holes, and the left end of the second gear is fixedly connected to a rotating rod, so that the first gear drives the second gear to rotate.

[0011] Furthermore, the end of the rotating rod away from the second gear is fixedly connected to a docking rod, and the end of the rotating rod away from the gear is rotatably connected to a fixed seat. Two fixed seats are provided, and the docking rod is located between the two fixed seats. The bottoms of the two fixed seats are fixedly connected to the top of the mounting plate. This arrangement is to limit the rotating rod by the fixed seat to prevent the rotating rod from moving left and right.

[0012] Furthermore, two docking mechanisms are fixedly connected to the top of the mounting plate. The docking mechanisms include an insulating base fixedly connected to the top of the mounting plate. Two fixing plates are fixedly connected to the top of the insulating base. This arrangement is for grounding the ground wire and the live wire.

[0013] Furthermore, the two fixed plates are fixedly connected to a sleeve on one side close to each other, and the second springs are fixedly connected to the right side inside the two sleeves. The two second springs are fixedly connected to a push rod on one end close to each other, and the push rod is sleeved inside the sleeve. This arrangement is to compress the second spring when the docking rod and the docking piece are closed, so that the docking rod and the docking piece can be docked more tightly.

[0014] Furthermore, the two push rods are fixedly connected to one side close to each other with a docking piece, and two sliding grooves are provided inside the insulating base. The docking piece is slidably connected inside the sliding groove. This arrangement facilitates the movement of the docking piece.

[0015] The utility model has the following beneficial effects:

[0016] 1. The manual operating mechanism of the three-position load switch, when the device is in the open state, when the pull rod is pulled to the right, the pull rod will drive the limit rod to move to the right, so that the limit rod leaves the limit hole, and when the limit rod moves, it will drive the limit plate to move to the right, and the limit plate will compress the first spring when it moves to the right. When the first spring is compressed to the shortest, the left end of the limit rod will leave the limit hole, turn the knob, the knob drives the connecting rod to rotate, the connecting rod drives the first gear to rotate, the first gear drives the second gear to rotate, so that the docking hole and the limit rod are staggered, release the pull rod, and the second gear will block the limit rod. At this time, the first spring is still in a compressed state, and the knob continues to be rotated. When the second gear rotates to the closed or grounded state, the first spring will push the baffle to move to the left, and the baffle drives the limit rod to move to the left, so that the limit rod enters the limit hole again, which can prevent the staff from continuing to rotate the knob, resulting in squeezing of the docking rod and the insulating base, which will cause deformation of the docking rod and the insulating base for a long time, causing damage to the device.

[0017] 2. The manual operating mechanism of the three-position load switch has a thickness of the docking rod that is greater than the gap between the two docking pieces. During the descent of the docking rod, the two docking pieces will move away from each other, and the docking pieces will push the push rods to move away from each other. The docking pieces will compress the second spring, so that the second spring pair will push the push rods to move toward each other, and the push rods will push the docking pieces to move, making the contact between the docking rod and the docking pieces closer to prevent contact failure.

[0018] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 It is a schematic cross-sectional diagram of the overall structure of the utility model;

[0022] Figure 3 This is a schematic diagram of the locking mechanism structure of the utility model;

[0023] Figure 4 This is a schematic diagram of the structure of the adjustment mechanism of the utility model;

[0024] Figure 5 It is a schematic diagram of the docking mechanism structure of the utility model.

[0025] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0026] 1. Mounting plate; 11. Insulating box; 12. Indicating slot; 2. Locking mechanism; 201. Limiting rod; 202. Pull rod; 203. Limiting piece; 204. First spring; 205. Limiting tube; 3. Adjusting mechanism; 301. Connecting rod; 302. Pointer; 303. Knob; 304. First gear; 305. Second gear; 306. Limiting hole; 307. Turn bar; 308. Docking rod; 309. Fixed seat; 4. Docking mechanism; 401. Insulating base; 402. Fixed plate; 403. Sleeve; 404. Second spring; 405. Push rod; 406. Docking piece; 407. Slide slot. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] See also Figure 1-5 As shown, the utility model is a manual operating mechanism of a three-position load switch, including a mounting plate 1, an insulating box 11 is fixedly connected to the top of the mounting plate 1, and an indicator groove 12 is opened on the right side of the insulating box 11, and also includes:

[0029] The locking mechanism 2 includes a limit rod 201 which is sleeved inside the insulating box 11, and a pull rod 202 is fixedly connected to one end of the limit rod 201 away from the insulating box 11. A limit tube 205 is fixedly connected to the right inner wall of the insulating box 11, and the limit rod 201 is sleeved inside the limit tube 205.

[0030] Among them, the limiting tube 205 is slidably connected to the limiting plate 203 inside, the limiting plate 203 is sleeved inside the limiting tube 205, and the first spring 204 is fixedly connected to the right side of the limiting plate 203. The side of the first spring 204 away from the limiting plate 203 is fixedly connected to the right side inside the insulating box 11, and the limiting rod 201 is sleeved on the inner side of the first spring 204.

[0031] An adjustment mechanism 3 is provided inside the insulating box 11, and the adjustment mechanism 3 includes a connecting rod 301 sleeved inside the insulating box 11, and a pointer 302 is fixedly connected to one end of the connecting rod 301 away from the insulating box 11, and the pointer 302 is located in the display slot, and a knob 303 is fixedly connected to one end of the connecting rod 301 away from the insulating box 11.

[0032] The knob 303 is located on the right side of the pointer 302. The end of the connecting rod 301 away from the knob 303 is fixedly connected to the first gear 304. The bottom of the first gear 304 is meshed with the second gear 305. The second gear 305 is provided with a plurality of limiting holes 306. The left end of the second gear 305 is fixedly connected to the rotating rod 307.

[0033] The end of the rotating rod 307 away from the second gear 305 is fixedly connected to the docking rod 308, and the end of the rotating rod 307 away from the gear is rotatably connected to a fixed seat 309. There are two fixed seats 309, and the docking rod 308 is located between the two fixed seats 309. The bottoms of the two fixed seats 309 are fixedly connected to the top of the mounting plate 1.

[0034] Two docking mechanisms 4 are fixedly connected to the top of the mounting plate 1 . The docking mechanism 4 includes an insulating base 401 fixedly connected to the top of the mounting plate 1 . Two fixing plates 402 are fixedly connected to the top of the insulating base 401 .

[0035] The two fixing plates 402 are fixedly connected to a sleeve 403 on one side close to each other, and the second springs 404 are fixedly connected to the right side inside the two sleeves 403. The two second springs 404 are fixedly connected to a push rod 405 on one end close to each other, and the push rod 405 is sleeved inside the sleeve 403.

[0036] A butt joint piece 406 is fixedly connected to the mutually adjacent sides of the two push rods 405 . Two slide grooves 407 are provided inside the insulating base 401 . The butt joint piece 406 is slidably connected inside the slide grooves 407 .

[0037] A specific application of this embodiment is: when the device is in the off state, when the pull rod 202 is pulled to the right, the pull rod 202 will drive the limit rod 201 to move to the right, so that the limit rod 201 leaves the limit hole 306, and when the limit rod 201 moves, it will drive the limit plate 203 to move to the right. When the limit plate 203 moves to the right, it will compress the first spring 204. When the first spring 204 is compressed to the shortest, the left end of the limit rod 201 will leave the limit hole 306, and the knob 303 will be turned to drive the connection The rod 301 rotates, the connecting rod 301 drives the first gear 304 to rotate, the first gear 304 drives the second gear 305 to rotate, so that the docking hole 306 and the limit rod 201 are staggered, and the pull rod 202 is released, and the second gear 305 blocks the limit rod 201. At this time, the first spring 204 is still in a compressed state. The knob 303 is continuously rotated. When the second gear 305 rotates to the closed or grounded state, the first spring 204 pushes the baffle to move left, and the baffle drives the limit rod 201 to move left, so that the limit When the rod 201 enters the limit hole 306 again, the staff can be prevented from continuing to rotate the knob 303, resulting in the squeezing of the docking rod 308 and the insulating base 401. For a long time, the docking rod 308 and the insulating base 401 will be deformed, resulting in damage to the device. When the knob 303 is rotated, the pointer 302 can be driven to rotate, thereby displaying the position of the docking rod 308, which is more convenient. When the second gear 305 rotates, the rotating rod 307 will be driven to rotate, and the rotation will drive the docking rod 308 to rotate. Because the thickness of the docking rod 308 is greater than the gap between the two dockings, during the descent of the docking rod 308, the two docking pieces 406 will move away from each other, and the docking piece 406 will push the push rod 405 to move away from each other. The docking piece 406 will compress the second spring 404, so that the second 404 spring pair will push the push rod 405 to move in a direction close to each other, and the push rod 405 will push the docking piece 406 to move, so that the contact between the docking rod 308 and the docking piece 406 is closer, preventing contact failure.

[0038] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0039] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A manual operating mechanism for a three-position load switch, comprising a mounting plate (1), the top of the mounting plate (1) being fixedly connected to an insulating box (11), the right side of the insulating box (11) being provided with an indicating slot (12), characterized in that: Also includes: A locking mechanism (2), the locking mechanism (2) comprising a limit rod (201) sleeved inside the insulation box (11), the limit rod (201) having one end away from the insulation box (11) fixedly connected to a pull rod (202), a limit tube (205) fixedly connected to the right inner wall of the insulation box (11), the limit rod (201) sleeved inside the limit tube (205); The limiting tube (205) is slidably connected to a limiting plate (203) inside, the limiting plate (203) is sleeved inside the limiting tube (205), a first spring (204) is fixedly connected to the right side of the limiting plate (203), a side of the first spring (204) away from the limiting plate (203) is fixedly connected to the right side inside the insulating box (11), and the limiting rod (201) is sleeved inside the first spring (204).

2. A manual operating mechanism for a three-position load switch according to claim 1, characterized in that: An adjustment mechanism (3) is provided inside the insulating box (11), and the adjustment mechanism (3) comprises a connecting rod (301) sleeved inside the insulating box (11), a pointer (302) is fixedly connected to one end of the connecting rod (301) away from the insulating box (11), and the pointer (302) is located in the display slot, and a knob (303) is fixedly connected to one end of the connecting rod (301) away from the insulating box (11).

3. A manual operating mechanism for a three-position load switch according to claim 2, characterized in that: The knob (303) is located on the right side of the pointer (302); one end of the connecting rod (301) away from the knob (303) is fixedly connected to a first gear (304); a second gear (305) is meshedly connected to the bottom of the first gear (304); a plurality of limiting holes (306) are formed on the second gear (305); and a rotating rod (307) is fixedly connected to the left end of the second gear (305).

4. A manual operating mechanism for a three-position load switch according to claim 3, characterized in that: One end of the rotating rod (307) away from the second gear (305) is fixedly connected to a docking rod (308), and one end of the rotating rod (307) away from the gear is rotatably connected to a fixing seat (309), two fixing seats (309) are provided, the docking rod (308) is located between the two fixing seats (309), and the bottoms of the two fixing seats (309) are fixedly connected to the top of the mounting plate (1).

5. The manual operating mechanism of a three-position load switch according to claim 1, characterized in that: The top of the mounting plate (1) is fixedly connected to two docking mechanisms (4), the docking mechanism (4) comprising an insulating base (401) fixedly connected to the top of the mounting plate (1), and the top of the insulating base (401) is fixedly connected to two fixing plates (402).

6. A manual operating mechanism for a three-position load switch according to claim 5, characterized in that: The two fixing plates (402) are fixedly connected to a sleeve (403) on one side close to each other, the inside right sides of the two sleeves (403) are fixedly connected to a second spring (404), and the two second springs (404) are fixedly connected to a push rod (405) on one end close to each other, and the push rod (405) is sleeved inside the sleeve (403).

7. A manual operating mechanism for a three-position load switch according to claim 6, characterized in that: A butt joint piece (406) is fixedly connected to the mutually adjacent sides of the two push rods (405), two slide grooves (407) are provided inside the insulating base (401), and the butt joint piece (406) is slidably connected inside the slide grooves (407).

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