CN113479752A

CN113479752A - Portable current transformer replacement auxiliary device

Info

Publication number: CN113479752A
Application number: CN202110558506.4A
Authority: CN
Inventors: 胡建军; 李宾; 王秀境; 黄承润; 杨传波; 龙先鹏; 杨长静; 欧光征; 杨代宇; 潘琦琪; 杨孜
Original assignee: Guizhou Power Grid Co Ltd
Current assignee: Guizhou Power Grid Co Ltd
Priority date: 2021-05-21
Filing date: 2021-05-21
Publication date: 2021-10-08
Anticipated expiration: 2041-05-21
Also published as: CN113479752B

Abstract

The invention discloses a portable current transformer replacement auxiliary device, which comprises a cross beam, wherein a U-shaped hanging wheel is arranged at the top of the cross beam, anti-jumping clamp plates are arranged on two sides of the U-shaped hanging wheel, the portable current transformer replacement auxiliary device is provided with the U-shaped hanging wheel, a chain and a second O-shaped fixing ring, when the device is used, a current transformer is bound and rolled through a transformer binding and rolling belt, then the current transformer is lifted, then the anti-jumping clamp plates are pulled, the U-shaped hanging wheel is moved along the cross beam, then the transformer binding and rolling belt is lowered through the chain by using a jack until a new current transformer is in place, so that the current transformer replacement work can be completed by a small amount of personnel, and meanwhile, the current transformer replacement is safer, thereby greatly reducing the labor cost and the time cost, therefore, the current transformer can be conveniently replaced by using the device.

Description

Portable current transformer replacement auxiliary device

Technical Field

The invention relates to the technical field of current transformer replacement tools, in particular to a portable current transformer replacement auxiliary device.

Background

The current transformer is an instrument for measuring by converting a large primary side current into a small secondary side current according to the electromagnetic induction principle. The current transformer is composed of a closed iron core and a winding. The primary side winding of the transformer has few turns and is connected in a circuit of the current to be measured. Therefore, all current of a line always flows through the current transformer, the number of turns of the secondary side winding is large, the secondary side winding is connected in series in the measuring instrument and the protection loop, and the secondary side loop of the current transformer is always closed when the current transformer works, so that the impedance of the series coil of the measuring instrument and the protection loop is small, and the working state of the current transformer is close to a short circuit. The current transformer converts a large current on the primary side into a small current on the secondary side for measurement, and the secondary side can not be opened. Current transformers can be broadly classified into two types according to their uses: current transformer for measurement (or measurement winding of current transformer): and in the normal working current range, providing current information of the power grid for devices such as measurement, metering and the like. Protective current transformer (or protective winding of current transformer): and under the condition of power grid fault, providing power grid fault current information for devices such as relay protection and the like. When the current transformer is replaced, because the space of the switch cabinet is narrow, the staff is limited and can only lift or lift the current transformer by hands (the weight of the current transformer is about 34 kilograms and depends on the capacity), the current transformer is easy to topple, and the current transformer and other equipment are damaged and the staff are injured.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides a portable current transformer replacement auxiliary device, which solves the problems in the background technology.

The purpose of the invention is realized by the following technical scheme:

the portable current transformer replacement auxiliary device comprises a cross beam, a U-shaped change gear is arranged at the top of the cross beam, anti-jump clamp plates are arranged on two sides of the U-shaped change gear, a U-shaped hanging ring is fixedly connected between the two anti-jump clamp plates and below the first fixing bolt through a second fixing bolt, a first hook is arranged in the middle of the U-shaped suspension loop, a jack is arranged at the bottom of the first hook, a chain is arranged in the jack, both ends of the chain extend to the lower part of the jack, a second hook is arranged at one end of the chain, a triangular hanging ring is arranged in the second hook, a first O-shaped fixing ring is arranged at the bottom of the triangular hanging ring, a mutual inductor binding and rolling belt is fixedly connected at the bottom end of the first O-shaped fixing ring, the outside of mutual-inductor bundling area is provided with the slack adjuster, the one end of mutual-inductor bundling area is provided with the solid fixed ring of second O type.

Furthermore, one side of the second hook is provided with a second anti-falling tongue.

Further, one side of the first hook is provided with a first anti-falling tongue.

Further, one side of the jack is provided with a positive and negative handle, and one end of the positive and negative handle is provided with an operating handle.

Furthermore, the two anti-jumping clamp plates are fixedly connected through a first fixing bolt.

Furthermore, the two sides of the anti-jumping clamp plate and the upper portion of the anti-jumping clamp plate, which is located on the first fixing bolt, are provided with mounting brackets, and anti-skidding pieces are arranged between the mounting brackets.

Furthermore, a clamping box is arranged inside the U-shaped hanging ring and above the first hook, connecting grooves are formed in the clamping box, clamping columns are connected inside the connecting grooves in a sliding mode, a clamping groove is formed in the top end of the first hook, one end of each clamping column extends into the clamping groove, two connecting springs are fixedly connected to the tops of the clamping columns, the top ends of the connecting springs are fixedly connected with the tops of inner cavities of the connecting grooves, a connecting rope is fixedly connected to the tops of the clamping columns and between the two connecting grooves, a sliding groove is formed in one side of the clamping box, a sliding block is connected inside the sliding groove in a sliding mode, a rope groove is formed in the clamping box and between the sliding groove and the connecting groove, one end of the connecting rope penetrates through the connecting rope and is fixedly connected with the tops of the sliding blocks, and a limiting groove is formed in the clamping box and between the sliding groove and the connecting groove, the bottom of limiting groove inner chamber is provided with supporting spring, supporting spring's top is provided with the stopper, one side of stopper all with one side fixed connection of slider.

Further, one side of triangle link is provided with fixed case, the inside sliding connection of fixed case has the gag lever post, the outside of second couple is seted up and is had the spacing groove, the one end of gag lever post extends to the limiting groove inside, the one end fixedly connected with dead lever of gag lever post, the inside outside sliding connection who just is located the dead lever of fixed case has fixed spring, the one end of dead lever extends to the outside of fixed case.

Further, the top in the mutual-inductor binding area outside is provided with second abrasionproof cover, the below in the mutual-inductor binding area outside is provided with first abrasionproof cover, the one end of first abrasionproof cover is provided with the connecting band, the one end of connecting band is connected with the one end of second abrasionproof cover, the inboard of first abrasionproof cover is provided with the second adhesive tape, the inboard of second abrasionproof cover is provided with the connecting band, the outside in mutual-inductor binding area and the inboard that is located second abrasionproof cover and first abrasionproof cover are provided with first adhesive tape, one side of first abrasionproof cover is provided with the fixed block, one side of second abrasionproof cover is provided with the second magic subsides, the one end of fixed block is provided with first magic subsides, first magic subsides and second magic subsides adhesive bonding, second adhesive tape and third adhesive tape all with first adhesive tape adhesive bonding.

The invention has the beneficial effects that:

1. this auxiliary device is changed to portable current transformer is through being provided with U type change gear, the solid fixed ring of chain and second O type, when making this device use, tie up current transformer through the transformer tie-up area and roll, then promote current transformer, then the pulling is prevented jumping splint, make U type change gear remove along the crossbeam, then through utilizing the ground jack to pass through the chain with the transformer tie-up area descend, take one's place until new current transformer, thereby only need a small amount of personnel can accomplish current transformer change work, it is comparatively safe when making to change current transformer simultaneously, thereby greatly reduced the human cost, time cost has been reduced by a wide margin simultaneously, thereby it is comparatively convenient to make to use this device to carry out current transformer and change.

2. This auxiliary device is changed to portable current transformer is through being provided with the card post, draw-in groove and joint case, make the bottom of card post can insert to the draw-in groove inside, thereby prescribe a limit to the position of first couple, when preventing that current transformer from carrying out the handling, the condition of rocking appears, stability when increasing the current transformer handling, through being provided with the dead lever, limit slot and gag lever post, make the one end of gag lever post can insert to limiting the inslot portion, thereby improved the stability that current transformer carried out the handling, thereby security when having improved current transformer and having changed.

3. This auxiliary device is changed to portable current transformer is through being provided with first abrasionproof cover and second abrasionproof cover for first abrasionproof cover and second abrasionproof cover use the long time wearing and tearing back, can be convenient change, thereby prevent that the mutual-inductor strap from receiving wearing and tearing when handling current transformer, thereby reduced the use cost of this device.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the present invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

Drawings

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail with reference to the accompanying drawings, in which:

FIG. 1 is a schematic view of the internal structure of the present invention;

FIG. 2 is a left side view of the anti-bounce clamp of the present invention;

FIG. 3 is a schematic view of the lower structure of the chain of the present invention;

FIG. 4 is a schematic view of the structure below the anti-jump clamp plate and above the chain according to the present invention;

FIG. 5 is a schematic view of the inner structure of the first and second wear sleeves of the present invention;

FIG. 6 is a schematic view of a U-shaped suspension loop structure according to the present invention;

FIG. 7 is an enlarged view taken at A of FIG. 6 in accordance with the present invention;

FIG. 8 is an enlarged view taken at B of FIG. 6 in accordance with the present invention;

FIG. 9 is an enlarged view of FIG. 1 at C according to the present invention;

FIG. 10 is an enlarged view taken at D of FIG. 5 in accordance with the present invention;

FIG. 11 is an external view of the card cage of the present invention;

fig. 12 is a schematic view of the anti-jump splint in right side view.

In the figure: 1. a cross beam; 2. a U-shaped change gear; 3. an anti-jumping splint; 4. a first fixing bolt; 5. a U-shaped suspension loop; 6. a first hook; 7. a first anti-slip tongue; 8. a jack; 9. a chain; 10. an operating handle; 11. a second hook; 12. a second anti-slip tongue; 13. a triangular hanging ring; 14. a first O-ring; 15. binding and rolling a belt of the mutual inductor; 16. a slack adjuster; 17. a second O-ring retainer ring; 18. mounting a bracket; 19. anti-slip sheets; 20. a second fixing bolt; 21. a front handle and a back handle; 22. clamping a box; 23. connecting grooves; 24. a connecting spring; 25. clamping the column; 26. a card slot; 27. connecting ropes; 28. Rope grooves; 29. a limiting groove; 30. a support spring; 31. a limiting block; 32. a chute; 33. a slider; 34. a fixed box; 35. fixing the rod; 36. a limiting rod; 37. fixing the spring; 38. defining a slot; 39. a first wear sleeve; 40. a second wear sleeve; 41. a connecting belt; 42. a first adhesive tape; 43. a second adhesive tape; 44. a third adhesive tape; 45. a fixed block; 46. a first magic tape; 47. the second magic tape.

Detailed Description

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. It should be understood that the preferred embodiments are illustrative of the invention only and are not limiting upon the scope of the invention.

As shown in the figures, the portable current transformer replacement auxiliary device comprises a cross beam 1, wherein a U-shaped hanging wheel 2 is arranged at the top of the cross beam 1, anti-jump clamp plates 3 are respectively arranged at two sides of the U-shaped hanging wheel 2, a U-shaped hanging ring 5 is fixedly connected between the two anti-jump clamp plates 3 and below a first fixing bolt 4 through a second fixing bolt 20, a first hook 6 is arranged at the middle part of the U-shaped hanging ring 5, a jack 8 is arranged at the bottom of the first hook 6, a chain 9 is arranged inside the jack 8, two ends of the chain 9 extend to the lower part of the jack 8, a second hook 11 is arranged at one end of the chain 9, a triangular hanging ring 13 is arranged inside the second hook 11, a first O-shaped fixing ring 14 is arranged at the bottom of the triangular hanging ring 13, a transformer rolling belt 15 is fixedly connected to the bottom end of the first O-shaped fixing ring 14, a loosening and tightening adjuster 16 is arranged outside the transformer rolling belt 15, one end of the mutual inductor binding and rolling belt 15 is provided with a second O-shaped fixing ring 17.

Wherein, one side of second couple 11 is provided with second anticreep tongue 12, prevents when using this device, and triangle link 13 breaks away from second couple 11, leads to current transformer to drop, causes the impaired condition of current transformer to take place.

Wherein, one side of first couple 6 is provided with first anticreep tongue 7, prevents when using this device, and first couple 6 breaks away from U type link 5, leads to current transformer to drop, causes the impaired condition of current transformer to take place.

Wherein, one side of the jack 8 is provided with a positive and negative handle 21, and one end of the positive and negative handle 21 is provided with an operating handle 10, which is convenient for adjusting the positive and negative modes of the tightness adjuster 16.

Wherein, two prevent jumping splint 3 through first fixing bolt 4 fixed connection for it is comparatively stable when using to prevent jumping splint 3.

Wherein, the both sides of preventing jumping splint 3 and the top that is located first fixing bolt 4 all are provided with installing support 18, are provided with antiskid ribbed tile 19 between installing support 18 for it is comparatively stable when U type change gear 2 uses.

Wherein, a clamping box 22 is arranged inside the U-shaped hanging ring 5 and above the first hook 6, a connecting groove 23 is arranged inside the clamping box 22, a clamping column 25 is connected inside the connecting groove 23 in a sliding manner, a clamping groove 26 is arranged at the top end of the first hook 6, one end of the clamping column 25 extends into the clamping groove 26, two connecting springs 24 are fixedly connected to the top of the clamping column 25, the top ends of the connecting springs 24 are fixedly connected with the top of the inner cavity of the connecting groove 23, a connecting rope 27 is fixedly connected to the top of the clamping column 25 and between the two connecting grooves 23, a sliding groove 32 is arranged on one side of the clamping box 22, a sliding block 33 is connected inside the sliding groove 32 in a sliding manner, a rope groove 28 is arranged inside the clamping box 22 and between the sliding groove 32 and the connecting groove 23, one end of the connecting rope 27 passes through the connecting rope 27 and is fixedly connected with the top of the sliding block 33, a limiting groove 29 is arranged inside the clamping box 22 and between the sliding groove 32 and the connecting groove 23, the bottom of the inner cavity of the limiting groove 29 is provided with a supporting spring 30, the top end of the supporting spring 30 is provided with a limiting block 31, one side of the limiting block 31 is fixedly connected with one side of the sliding block 33, the position of the first hook 6 is limited, and the current transformer is prevented from swinging during lifting.

Wherein, one side of triangle link 13 is provided with fixed case 34, the inside sliding connection of fixed case 34 has gag lever post 36, limited groove 38 is seted up in the outside of second couple 11, the one end of gag lever post 36 extends to limited groove 38 inside, the one end fixedly connected with dead lever 35 of gag lever post 36, the inside outside sliding connection who just is located dead lever 35 of fixed case 34 has fixed spring 37, the one end of dead lever 35 extends to the outside of fixed case 34, it is spacing to carry out second couple 11, prevent when the handling, current transformer rocks.

Wherein, a second anti-wear sleeve 40 is arranged above the outer side of the transformer binding belt 15, a first anti-wear sleeve 39 is arranged below the outer side of the transformer binding belt 15, a connecting belt 41 is arranged at one end of the first anti-wear sleeve 39, one end of the connecting belt 41 is connected with one end of the second anti-wear sleeve 40, a second adhesive belt 43 is arranged inside the first anti-wear sleeve 39, a connecting belt 41 is arranged inside the second anti-wear sleeve 40, a first adhesive belt 42 is arranged outside the transformer binding belt 15 and inside the second anti-wear sleeve 40 and the first anti-wear sleeve 39, a fixing block 45 is arranged on one side of the first anti-wear sleeve 39, a second magic tape 47 is arranged on one side of the second anti-wear sleeve 40, a first magic tape 46 is arranged at one end of the fixing block 45, the first magic tape 46 is adhesively connected with the second magic tape 47, the second adhesive belt 43 and the third magic tape 44 are adhesively connected with the first adhesive belt 42, the abrasion degree of the mutual inductor binding and rolling belt 15 is reduced, so that the use cost of the device is reduced.

In summary, before the portable current transformer replacement auxiliary device is used, the first hook 6 is hooked on the U-shaped hanging ring 5, then the operator buckles the sliding block 33, so that the sliding block 33 drives the limiting block 31 to slide along the inner cavity of the limiting groove 29, so that the connecting rope 27 pulls the clamping column 25 to move upwards, then the first hook 6 is moved to the lower side of the clamping column 25, then the operator loosens the sliding block 33, at this time, the supporting spring 30 pushes the limiting block 31 to slide upwards along the inner cavity of the limiting groove 29, at the same time, the connecting spring 24 pushes the clamping column 25 to move downwards, so that the bottom end of the clamping column 25 is inserted into the clamping groove 26, then the triangular hanging ring 13 is hung on the outer side of the second hook 11, then the fixing rod 35 is pulled, so that the fixing rod 35 pulls the limiting rod 36 to move towards the outer side of the fixing box 34, so that the limiting rod 36 is aligned with the limiting groove 38, then the fixing rod 35 is loosened, at this time, the fixing spring 37 pushes one end of the limiting rod 36 to be inserted into the limiting groove 38, when the first anti-wear sleeve 39 and the second anti-wear sleeve 40 need to be replaced, an operator pulls the first magic tape 46 to enable the first magic tape 46 and the second magic tape 47 to contact in a bonding state, then tears the second anti-wear sleeve 40 and the first anti-wear sleeve 39 from the outer side of the transformer binding belt 15, then sleeves the new first anti-wear sleeve 39 and the second anti-wear sleeve 40 on the outer side of the transformer binding belt 15, then presses the first anti-wear sleeve 39 and the second anti-wear sleeve 40 to enable the third bonding belt 44 and the second bonding belt 43 to be bonded with the first bonding belt 42, then presses the first magic tape 46 and the second magic tape 47 to enable the first magic tape 46 and the second magic tape 47 to be bonded, when the transformer binding belt is used, the tightness of the transformer binding belt 15 is adjusted through the tightness adjuster 16, then the old current transformer is bound through the transformer binding belt 15, and then the transformer binding belt 15 is lifted through the chain 9 by using the lifting adjuster 8, thereby lifting the old current transformer, then pulling the anti-jump clamp plate 3 to make the U-shaped hanging wheel 2 move along the beam 1, thereby making the chain 9 drive the transformer binding belt 15 to move, further driving the old current transformer to move to a proper position, then lowering the transformer binding belt 15 through the chain 9 by using the jack 8 to make the old current transformer move to a proper position, then using the transformer binding belt 15 to bind the old current transformer, then binding the new current transformer by using the transformer binding belt 15, then using the jack 8 to lift the transformer binding belt 15 through the chain 9 to lift the new current transformer, then pulling the anti-jump clamp plate 3 to make the U-shaped hanging wheel 2 move along the beam 1, thereby making the chain 9 drive the transformer binding belt 15 to move, further driving the new current transformer to move to a proper position, the transformer strap 15 is then lowered by means of the chain 9 by using the jack 8 until a new current transformer is in place and then installed.

Finally, the above embodiments are only intended to illustrate the technical solutions of the present invention and not to limit the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all of them should be covered by the claims of the present invention.

Claims

1. Portable current transformer changes auxiliary device, including crossbeam (1), its characterized in that: the anti-bouncing cable is characterized in that a U-shaped hanging wheel (2) is arranged at the top of the crossbeam (1), anti-bouncing clamp plates (3) are arranged on two sides of the U-shaped hanging wheel (2), two anti-bouncing clamp plates (3) are fixedly connected below a first fixing bolt (4) through a second fixing bolt (20), a first hook (6) is arranged in the middle of the U-shaped hanging ring (5), a jack (8) is arranged at the bottom of the first hook (6), a chain (9) is arranged inside the jack (8), two ends of the chain (9) extend to the lower side of the jack (8), a second hook (11) is arranged at one end of the chain (9), a triangular hanging ring (13) is arranged inside the second hook (11), a first O-shaped fixing ring (14) is arranged at the bottom of the triangular hanging ring (13), and a mutual inductor binding belt (15) is fixedly connected to the bottom end of the first O-shaped fixing ring (14), the outside of mutual-inductor bundling belt (15) is provided with slack adjuster (16), the one end of mutual-inductor bundling belt (15) is provided with the solid fixed ring of second O type (17).

2. The portable current transformer replacement assistance device according to claim 1, wherein: one side of the second hook (11) is provided with a second anti-falling tongue (12).

3. The portable current transformer replacement assistance device according to claim 1, wherein: one side of the first hook (6) is provided with a first anti-dropping tongue (7).

4. The portable current transformer replacement assistance device according to claim 1, wherein: one side of the jack (8) is provided with a front and back handle (21), and one end of the front and back handle (21) is provided with an operating handle (10).

5. The portable current transformer replacement assistance device according to claim 1, wherein: the two anti-jumping splints (3) are fixedly connected through a first fixing bolt (4).

6. The portable current transformer replacement assistance device according to claim 1, wherein: and mounting brackets (18) are arranged on two sides of the anti-jumping clamp plate (3) and above the first fixing bolt (4), and anti-skidding sheets (19) are arranged between the mounting brackets (18).

7. The portable current transformer replacement assistance device according to claim 1, wherein: a clamping box (22) is arranged inside the U-shaped hanging ring (5) and above the first hook (6), a connecting groove (23) is formed inside the clamping box (22), a clamping column (25) is connected inside the connecting groove (23) in a sliding manner, a clamping groove (26) is formed in the top end of the first hook (6), one end of the clamping column (25) extends into the clamping groove (26), two connecting springs (24) are fixedly connected to the top of the clamping column (25), the top ends of the connecting springs (24) are fixedly connected with the top of the inner cavity of the connecting groove (23), a connecting rope (27) is fixedly connected to the top of the clamping column (25) and is positioned between the two connecting grooves (23), a sliding groove (32) is formed in one side of the clamping box (22), a sliding block (33) is connected inside the sliding groove (32), a rope groove (28) is formed in the clamping box (22) and is positioned between the sliding groove (32) and the connecting groove (23), the one end of connecting rope (27) is passed connect rope (27) and with the top fixed connection of slider (33), spacing groove (29) have been seted up to inside and being located between spout (32) and spread groove (23) of joint case (22), the bottom of spacing groove (29) inner chamber is provided with supporting spring (30), the top of supporting spring (30) is provided with stopper (31), one side of stopper (31) all with one side fixed connection of slider (33).

8. The portable current transformer replacement assistance device according to claim 1, wherein: one side of triangle link (13) is provided with fixed case (34), fixed case (34) inside sliding connection has gag lever post (36), limited groove (38) are seted up in the outside of second couple (11), the one end of gag lever post (36) extends to inside limited groove (38), the one end fixedly connected with dead lever (35) of gag lever post (36), the inside outside sliding connection that just is located dead lever (35) of fixed case (34) has fixing spring (37), the one end of dead lever (35) extends to the outside of fixed case (34).

9. The portable current transformer replacement assistance device according to claim 1, wherein: the transformer binding belt is characterized in that a second anti-abrasion sleeve (40) is arranged above the outer side of the transformer binding belt (15), a first anti-abrasion sleeve (39) is arranged below the outer side of the transformer binding belt (15), a connecting belt (41) is arranged at one end of the first anti-abrasion sleeve (39), one end of the connecting belt (41) is connected with one end of the second anti-abrasion sleeve (40), a second bonding belt (43) is arranged on the inner side of the first anti-abrasion sleeve (39), a connecting belt (41) is arranged on the inner side of the second anti-abrasion sleeve (40), a second magic tape (47) is arranged on one side of the second anti-abrasion sleeve (40) and is positioned on the outer side of the transformer binding belt (15), a first bonding belt (42) is arranged on the inner side of the second anti-abrasion sleeve (40) and the first anti-abrasion sleeve (39), a fixing block (45) is arranged on one side of the first anti-abrasion sleeve (39), a second magic tape (47) is arranged on one end of the first magic tape (46), the first magic tape (46) is connected with the second magic tape (47) in an adhesive mode, and the second adhesive tape (43) and the third adhesive tape (44) are connected with the first adhesive tape (42) in an adhesive mode.