CN107389988B - High-altitude clamping device of transformer test clamp - Google Patents

Abstract

The invention discloses a high-altitude clamping device of a transformer test clamp, and relates to the technical field of electric auxiliary tools. Including tubular telescopic link, setting are in telescopic link lower part's slidingtype action bars, set up the clamping component in the telescopic link upper end, with clamping component fixed connection's haulage line, be used for resetting clamping component's spring and be used for fixing the third locking piece of slidingtype action bars, slidingtype action bars axial sliding connection is on the telescopic link, the one end and the clamping component fixed connection of haulage line, the other end and the slidingtype action bars of haulage line are connected, spring one end fixed connection is in clamping component, the other end fixed connection of spring in the telescopic link. The device can enable the staff to conveniently, rapidly and safely clamp and lock the test pliers, and improves the working efficiency.

Description

Transformer test clamp high altitude clamping device

Technical field

The present invention relates to the technical field of power auxiliary tools, and in particular to a high-altitude clamping device for transformer test clamps.

Background technique

During routine and handover tests of 220kV power transformers, the high-voltage side casing is very high, and high-altitude clamping devices are required for test wiring. The staff stands on the transformer heat sink or other lower position to remotely control the opening and closing of the test clamps. The test clamp can clamp or remove the test terminal. In the prior art, when using the clamping device to clamp the test pliers, workers need to continuously apply force to hold the operating rod to prevent the test pliers from falling from the clamping claws, which makes the operation inconvenient.

Contents of the invention

The technical problem to be solved by the present invention is to provide a high-altitude clamping device for transformer test pliers in view of the above-mentioned deficiencies in the prior art, allowing workers to clamp and lock the test pliers conveniently, quickly and safely, thereby improving work efficiency.

In order to solve the above technical problems, the technical solution adopted by the present invention is: a high-altitude clamping device for transformer test clamps, which includes a tubular telescopic rod, a sliding operating rod arranged at the lower part of the telescopic rod, and a clamping device arranged at the upper end of the telescopic rod. component, a traction wire fixedly connected to the clamping component, a spring for resetting the clamping component, and a third locking piece for fixing the sliding operating lever. The sliding operating lever is axially slidingly connected to the telescopic rod, and the traction wire One end of the spring is fixedly connected to the clamping component, the other end of the pulling wire is connected to the sliding operating rod, one end of the spring is fixedly connected to the clamping component, and the other end of the spring is fixedly connected to the telescopic rod.

Further, the lower end of the telescopic rod is also provided with a fixed operating rod, one end of the third locking member is ball-jointed to the fixed operating rod, and the other end of the third locking member is provided with a hook for fixing the sliding operating rod. , the sliding operating lever is provided with a locking groove corresponding to the third locking piece.

Further, the sliding operating lever includes a hand-held part and a sliding part arranged in a T-shape, and the lower part of the telescopic rod is provided with a sliding groove that matches the sliding operating lever.

Further, the telescopic rod includes an outer rod, an inner rod slidably connected to the inside of the outer rod, and a first locking member for fixing the outer rod and the inner rod.

Further, the first locking member is hinged to the end of the outer sleeve rod and includes a hand-held handle and a locking bump. The outer wall of the inner sleeve rod is provided with a locking plane that matches the locking bump.

Further, a guide ring is provided on the sliding operating rod, one end of the traction wire is connected to the clamping component, and the other end of the traction wire bypasses the guide ring and is fixed on the telescopic rod.

Further, one end of the telescopic rod connected to the traction line is provided with a roller for winding the traction line, and the roller is provided with a handle.

Further, the drum is provided with a second locking piece for fixing the handle.

Further, the clamping assembly includes a fixed claw fixed on the end of the telescopic rod and a movable claw hinged with the fixed claw. The clamping surfaces of the fixed claw and the movable claw are arranged oppositely. One end of the spring is fixedly connected to the movable claw, and the other end of the spring is connected to the movable claw. The inner sleeve rod is fixedly connected.

Further, both the fixed claw and the movable claw are grooved claws with a U-shaped cross section.

The beneficial effect of adopting the above technical solution is that: this device provides an easy-to-operate high-altitude clamping device. The staff drives the sliding operating rod to make the device clamp the test clamp, and the third locking member locks and fixes the sliding The sliding operating lever keeps the clamping assembly in a tightened state. During the lifting and lowering process of the clamping device, there is no need to hold the sliding operating lever all the time. The operation is convenient and fast, improving work efficiency, and preventing the test clamp from falling, improving safety.

Description of the drawings

Figure 1 is a schematic three-dimensional structural diagram of the clamping assembly released according to the embodiment of the present invention;

Figure 2 is a schematic diagram of the clamping three-dimensional structure of the clamping assembly according to the embodiment of the present invention;

Figure 3 is an exploded schematic diagram of the connection position between the first locking member and the telescopic rod;

Figure 4 is a schematic structural diagram of the third locking member and the sliding operating lever locking groove according to the embodiment of the present invention;

Figure 5 is a schematic diagram of the sliding connection of the sliding operating rod according to the embodiment of the present invention.

In the picture: 1. Telescopic rod; 11. Jacket rod; 12. Inner sleeve rod; 121. Locking plane; 13. First locking piece; 131. Hand-held handle; 132. Locking bump; 2. Fixed operation Rod; 3. Sliding operating lever; 4. Clamping component; 41. Fixed claw; 42. Movable claw; 5. Traction wire; 6. Guide ring; 7. Spring; 8. Roller; 81. Second locking piece ; 9. The third locking piece.

Detailed ways

The present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

As shown in Figures 1 and 2, it is an embodiment of a transformer test clamp high-altitude clamping device of the present invention, including a tubular telescopic rod 1, a sliding operating rod 3 arranged at the lower part of the telescopic rod 1, 1 The upper end of the clamping component 4, the pulling wire 5 fixedly connected to the clamping component 4, the spring 7 for resetting the clamping component 4 and the third locking piece 9 for fixing the sliding operating lever 3, sliding operation The rod 3 is axially slidingly connected to the telescopic rod 1, one end of the pulling wire 5 is fixedly connected to the clamping component 4, the other end of the pulling wire 5 is connected to the sliding operating rod 3, one end of the spring 7 is fixedly connected to the clamping component 4, The other end of the spring is fixedly connected to the telescopic rod 1.

The transmission part of the device of the present invention adopts a traction rope 5. One end of the traction rope 5 is connected to the sliding operating rod 3. The sliding operating rod 3 is slidingly connected to the telescopic rod 1 and is arranged parallel to the fixed operating rod 2. When clamping is required, When tightening the test clamp, just slide the fixed operating rod 2 away from one end of the clamping assembly 4. When it is necessary to release the test clamp, loosen the fixed operating rod 2, and the spring 7 will pull and reset, so that the sliding operating rod 3 slides toward Hold one end of the clamping component 4, the angle of the clamping component 4 becomes larger, and release the test clamp.

As shown in Figure 4, the lower end of the telescopic rod 1 is also provided with a fixed operating rod 2. One end of the third locking member 9 is ball-jointed to the fixed operating rod 2, and the other end of the third locking member 9 is provided with a The hook that fixes the sliding operating lever 3 is provided with a locking groove corresponding to the third locking member 9 . The fixed operating rod 2 is fixed at the lower end of the telescopic rod 1 and is parallel to the sliding operating rod 3; the third locking member 9 can be a simple lashing rope, a collar connected to the fixed operating rod 2, or a locking rod . This embodiment adopts the form of a locking rod; when the clamping assembly 4 clamps the test clamp, the hook of the third locking member 9 is placed in the locking groove, so that the sliding operating rod 3 no longer slides, and the staff no longer Force is required to maintain the clamping state of the clamping component 4; the locking groove is provided with steps, and the hooks are placed on the steps. The locking steps can prevent the hooks of the third locking member 9 from rotating and causing locking failure; the hooks are in the Step-shaped, suitable for locking steps; on the one hand, the longer telescopic rod 1 is easy to operate, and there is no need to hold the sliding operating rod 3 all the time during the lifting and lowering of the clamping device. On the other hand, from a safety perspective, the clamping operation to which this clamping device belongs is a high-altitude operation. If the operator cannot always hold the sliding operating rod 3, the test clamp may fall during the process of removing it. In the event of an injury to someone, using the third locking piece 9 can prevent this from happening.

As shown in FIG. 5 , the sliding operating lever 3 includes a handheld part and a sliding part arranged in a T shape. The lower part of the telescopic rod 1 is provided with a sliding groove that matches the sliding operating lever 3 .

The telescopic rod 1 includes an outer rod 11 , an inner rod 12 slidably connected to the inside of the outer rod 11 , and a first locking member 13 for fixing the outer rod 11 and the inner rod 12 . The first locking part 13 is used to fix the telescopic rod 1 that has been telescopically retracted in place. The first locking part 13 can be in the form of a fixing pin, and the corresponding telescopic rod 1 is provided with a bolt hole that matches the telescopic rod 1; a clamp can also be used. The inner sleeve rod 12 is provided with a buckle strip, and the outer sleeve rod 11 is provided with a through hole that matches the buckle. The buckle protrudes through the hole for clamping and locking. The buckle can be withdrawn from the through hole. Adjust the length; the inner sleeve rod 12 and the outer sleeve rod 11 can also be connected by bolts.

As shown in FIG. 3 , the first locking member 13 is hinged to the end of the outer sleeve rod 11 and includes a handle 131 and a locking protrusion 132 . The outer wall of the inner sleeve rod 12 is provided with a locking protrusion 132 . Adapted locking plane 121 . In this embodiment, the locking method of the inner sleeve rod 12 and the outer sleeve rod 11 is realized by a cam and a locking plane pressed against the cam. The inner sleeve rod 12 and the outer sleeve rod 11 can be locked and fixed by rotating the hand handle 131 .

The sliding operating rod 3 is provided with a guide ring 6, one end of the pulling wire 5 is connected to the clamping component 4, and the other end of the pulling wire 5 is fixed on the telescopic rod 1 around the guide ring 6. The traction wire 5 is used to control the action of the clamping component 4 from the handheld end at a distance, involving a complete transmission system, which can be connected by a simple push-pull rod. One end of the push-pull rod is connected to the sliding operating rod, and the other end is connected to the movable claw. 42 connection; the movable claw 42 can be slidably connected to the telescopic rod 1, one end of the push-pull rod is connected to the sliding operating rod, and the other end is connected to the movable claw 42; in this embodiment, the movable claw 42 is hinged with the fixed claw 41, and the pulling wire 5 One end is fixed inside the U-shaped groove of the movable claw 42, and the other end is fixed on the telescopic rod 1 along the inside of the rod of the telescopic rod 1, bypassing the guide ring 6 of the sliding operating rod 3, and multiple locations can be provided inside the shaft of the telescopic rod 1. The guide ring guides the direction of the traction line 5. The guide ring 6 on the sliding operating rod 3 can be a ring or a roller, which acts as a moving pulley. The moving distance of the sliding operating rod 3 can be more clearly reflected on the movable claw 42 ; When it is necessary to remove the clamping device, relax the sliding operating rod 3, the spring 7 stretches the movable claw 42 and rotates, and the opening angle of the clamping assembly 4 becomes larger; in this embodiment, the sliding operating rod 3 and the telescopic rod 1 adopt sliding As for the connection method, in order to enable the sliding operating rod 3 to be reset smoothly, a return spring can be provided between the sliding operating rod 3 and the telescopic rod 1.

As shown in Figure 4, one end of the telescopic rod 1 connected to the traction wire 5 is provided with a roller 8 for winding the traction wire 5, and the roller 8 is provided with a handle.

The drum 8 is provided with a second locking part 81 for fixing the handle. In order to adapt to the change in the length of the telescopic rod 1, a roller 8 is provided for winding, and the handle is used to assist in adjusting the length of the traction line 5. When the length of the telescopic rod 1 is fixed, the length of the traction line 5 is fixed accordingly. The locking member 81 locks the handle to prevent the drum 8 from rotating forward and reverse, causing the length of the traction line 5 to change.

The clamping component 4 includes a fixed claw 41 fixed on the end of the telescopic rod 1 and a movable claw 42 hinged with the fixed claw 41. The clamping surfaces of the fixed claw 41 and the movable claw 42 are arranged oppositely. One end of the spring 7 is fixedly connected to the movable claw 42. , the other end of spring 7 is fixedly connected with inner sleeve rod 12. The clamping component 4 is used to grab the test pliers, and the sliding operating rod 3 can control the opening angle of the fixed claw 41 and the movable claw 42.

Both the fixed claw 41 and the movable claw 42 are grooved claws with a U-shaped cross section. The notches of the fixed claw 41 and the movable claw 42 are arranged relative to each other. When the test pliers need to be clamped, the handle of the test pliers falls into the U-shaped groove, and the opening angle between the fixed claw 41 and the movable claw 42 becomes smaller and the test pliers are held tightly. handle.

The movable claw 42 is an arc-shaped hook. The fixed claw 41 and the movable claw 42 can adopt a symmetrical strip shape or a certain arc shape. In this embodiment, the fixed claw 41 adopts a strip shape, and the movable claw 42 adopts a hook shape. Both the fixed claw 41 and the movable claw 42 are provided with a hook shape. There is a U-shaped groove, and the free ends of the fixed claw 41 and the movable claw 42 are both equipped with flares. The groove width of the U-shaped groove at the flared end is larger than the groove width of the U-shaped groove on the claw body. The flared end plays a guiding role, and at the same time , the free end U-shaped groove of the movable claw 42 is provided with a section with only two side walls and no floor section. The opening angle of the two side walls becomes larger, which plays a guiding role in guiding the handle of the test pliers to fall into the U-shaped groove. When clamping is required, When tightening the test pliers, first slide one handle of the test pliers into the U-shaped groove of the fixed claw 41, guide the other handle into the U-shaped groove of the movable claw 42, and grasp the fixed operating rod 2 and operating handle 3.

It also includes a height-adjustable support frame hinged with the telescopic rod 1. For the convenience of workers, a support frame can be installed. The support frame includes a vertical rod hinged with the telescopic rod 1 and a support rod hinged with the vertical rod. There are three support rods. The lengths of the three struts can be set as needed and are suitable for various uneven support planes. The first locking member of the length of the struts can be in the form of locking screws, snap locks or the above-mentioned first locking member 13. .

Working process: During the transformer test, the staff member stands on the transformer heat sink, holds the fixed operating rod and the sliding operating rod to clamp the test clamp, opens the jaws and places them on the transformer bushing terminal block, and loosens the sliding clamp. The operating rod and the test clamp are clamped on the casing, the clamping device is removed, and the test is started. After the test is completed, the wiring clamp is removed through this device.

Beneficial effects: Telescopic rods are set up to meet the needs of different heights; the clamping component adopts asymmetrical clamping claws, and the clamping claws adopt the form of grooves, which is more conducive to holding the handle of the test pliers; the transmission method adopts the form of traction wire, The operation is simple, and the connection method of the movable pulley can more effectively drive the clamping assembly; it is equipped with a locking fixture of a fixed operating rod and a sliding operating rod to facilitate the staff to clamp the test clamp.

The above descriptions are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the protection of the present invention. within the range.

Claims (6)

1. The utility model provides a transformer test pincers high altitude clamping device, its characterized in that includes tubular telescopic link (1), sets up telescopic link (1) lower part slip type action bars (3), set up clamping assembly (4) of telescopic link (1) upper end, with clamping assembly (4) fixed connection's haulage line (5), be used for restoring spring (7) and the fixed third locking piece (9) of slip type action bars (3), slip type action bars (3) axial sliding connection in on telescopic link (1), the one end of haulage line (5) with clamping assembly (4) fixed connection, the other end of haulage line (5) with slip type action bars (3) are connected, spring (7) one end fixed connection in clamping assembly (4), the other end of spring fixed connection in telescopic link (1);

the lower end of the telescopic rod (1) is also provided with a fixed operating rod (2), one end of the third locking piece (9) is in ball joint with the fixed operating rod (2), the other end of the third locking piece (9) is provided with a hook for fixing the sliding operating rod (3), and the sliding operating rod (3) is provided with a locking groove corresponding to the third locking piece (9);

the sliding type operating rod (3) comprises a handheld part and a sliding part which are arranged in a T shape, and a sliding groove matched with the sliding type operating rod (3) is formed in the lower part of the telescopic rod (1);

the clamping assembly (4) comprises a fixed claw (41) fixed at the end part of the telescopic rod (1) and a movable claw (42) hinged with the fixed claw (41), clamping surfaces of the fixed claw (41) and the movable claw (42) are arranged oppositely, one end of the spring (7) is fixedly connected with the movable claw (42), and the other end of the spring (7) is fixedly connected with the inner sleeve rod (12);

the fixed claw (41) and the movable claw (42) are groove claws with U-shaped cross sections so as to form U-shaped grooves;

the fixed jaw (41) adopts a strip-shaped form, the movable jaw (42) adopts a hook-shaped form, the free ends of the fixed jaw (41) and the movable jaw (42) are provided with flaring, and the groove width of the U-shaped groove at the flaring end is larger than that of the U-shaped groove on the jaw body.

2. The transformer test clamp high-altitude clamping device according to claim 1, wherein: the telescopic rod (1) comprises an outer sleeve rod (11), an inner sleeve rod (12) which is connected to the inner side of the outer sleeve rod (11) in a sliding mode, and a first locking piece (13) which is used for fixing the outer sleeve rod (11) and the inner sleeve rod (12).

3. The transformer test clamp high-altitude clamping device according to claim 2, wherein: the first locking piece (13) is hinged to the end portion of the outer sleeve rod (11), the first locking piece comprises a handheld handle (131) and a locking lug (132), and a locking plane (121) matched with the locking lug (132) is arranged on the outer wall of the rod body of the inner sleeve rod (12).

4. The transformer test clamp high-altitude clamping device according to claim 1, wherein: the sliding type operation rod (3) is provided with a guide ring (6), one end of the traction wire (5) is connected to the clamping assembly (4), and the other end of the traction wire (5) bypasses the guide ring (6) and is fixed on the telescopic rod (1).

5. The transformer test clamp high-altitude clamping device according to claim 1, wherein: one end of the telescopic rod (1) connected with the traction wire (5) is provided with a roller (8) used for winding the traction wire (5), and the roller (8) is provided with a handle.

6. The transformer test clamp high-altitude clamping device according to claim 5, wherein: the roller (8) is provided with a second locking piece (81) for fixing the handle.