CN110695898B

CN110695898B - Magnetic telescopic sleeve

Info

Publication number: CN110695898B
Application number: CN201910993278.6A
Authority: CN
Inventors: 李磊; 段延辉; 王晓恒; 张红钵; 杨兴国
Original assignee: State Grid Henan Fanxian Power Supply Co; State Grid Corp of China SGCC; Puyang Power Supply Co of State Grid Henan Electric Power Co Ltd
Current assignee: State Grid Henan Fanxian Power Supply Co; State Grid Corp of China SGCC; Puyang Power Supply Co of State Grid Henan Electric Power Co Ltd
Priority date: 2019-10-18
Filing date: 2019-10-18
Publication date: 2021-05-04
Anticipated expiration: 2039-10-18
Also published as: CN110695898A

Abstract

The invention discloses a magnetic telescopic sleeve, which comprises a sleeve and a powerful magnetic ring arranged in the sleeve, wherein the sleeve comprises a lower end part of a screwing nut and an upper end part of a connecting screwing handle, through holes which are communicated up and down are formed in the inner end part and the lower end part of the upper end part, the powerful magnetic ring is connected in the through hole of the lower end part through a spiral spring, and the inner diameters of the spiral spring and the powerful magnetic ring are larger than the inner diameter of the through hole. According to the invention, through the design of the through holes, nuts on bolts with different lengths can be screwed, and the nuts can be adsorbed in the screwing process, so that the reliability of screwing is ensured; the mounting groove that the side set up and ordinary handle phase-match can twist the nut at the coplanar, stirs the ring and can slide from top to bottom along the solid fixed cylinder, and then adapts to different operating space's use restriction, can twist the nut soon in telescopic top.

Description

Magnetic telescopic sleeve

Technical Field

The invention relates to the technical field of socket wrenches, in particular to a magnetic telescopic sleeve used in line maintenance.

Background

The socket wrench is composed of a plurality of sockets with hexagonal holes or dodecagonal holes, a handle, a connecting rod and other accessories, and is particularly suitable for screwing bolts or nuts with very narrow or deep recesses. The socket wrench is mainly applied to the nut end or the bolt end which is completely lower than the connected surface, and the diameter of the concave hole can not be used for an open end wrench or an adjustable wrench and a box spanner; in addition, due to the space limitation of the bolt pieces, the nut can only be screwed by using a socket wrench.

However, when the nut is screwed on the longer bolt, the sleeve of the existing socket wrench, the connecting rod and the handle are positioned on the same axis, and one end of the sleeve is closed when the sleeve works, so that the nut at the bottom of the longer bolt cannot be screwed; even if the sleeve is lengthened, the use requirement cannot be completely met, the nut is screwed only by the length of the inner hole of the sleeve, and the nut is further screwed by the lengthened sleeve, so that the stability is lacked.

In addition, the shape and size specification of the nut are various, and when the traditional socket wrench is used, a socket with different shape and size specification is required to be equipped, so that the cost is high; in addition, different sleeves and nuts must be compared during use, and matched sleeve head wrenches are selected, so that serious influence is brought to actual use and working efficiency. Although the prior art has the universal sleeve, the prior art still cannot meet the screwing of the bottom nut of the long bolt, and the nut cannot be firmly combined with the universal sleeve in the screwing process.

Disclosure of Invention

In order to overcome the defects in the prior art, the invention provides a magnetic telescopic sleeve, which solves the technical problem that the existing sleeve wrench cannot screw a nut at the bottom of a long bolt.

The technical scheme of the invention is realized as follows: the magnetic telescopic sleeve comprises a sleeve and a powerful magnetic ring arranged in the sleeve, the sleeve comprises a lower end part of a screwing nut and an upper end part of a connecting screwing handle, through holes which are communicated up and down are formed in the upper end part and the lower end part, the powerful magnetic ring is connected in the through hole of the lower end part through a spiral spring, and the inner diameters of the spiral spring and the powerful magnetic ring are larger than the inner diameter of the through hole.

Furthermore, an inner cylinder vertically corresponding to the through hole is arranged in the lower end part, the inner cylinder divides the lower end part into an inner hole and an outer annular groove, the inner diameter of the inner hole is the same as the diameter of the through hole, and the height between the lower end face of the inner cylinder and the lower port of the through hole is larger than the height of the nut to be screwed.

Furthermore, a mounting ring is arranged between the outer wall of the inner barrel and the inner wall of the sleeve, the mounting ring is provided with fixing holes which are closely adjacent, and the telescopic rods are fixedly clamped in the fixing holes.

Furthermore, the telescopic rod comprises a prismatic rod which is fixedly connected with the fixing hole in a clamping mode, a telescopic sleeve is connected below the prismatic rod, thin springs axially supporting the prismatic rod are arranged in the telescopic sleeve, and when the thin springs are compressed, the sum of the elastic force of each thin spring is smaller than the adsorption force of the powerful magnetic ring.

Or the telescopic rod comprises a telescopic sleeve fixedly connected with the fixing hole in a clamping mode, the prismatic rod extending downwards is inserted in the telescopic sleeve, the thin springs axially supporting the prismatic rod are arranged in the telescopic sleeve, and when the thin springs are compressed, the sum of the elastic force of each thin spring is smaller than the adsorption force of the powerful magnetic ring.

Furthermore, the side wall of the lower end part of the sleeve is provided with an installation groove for connecting a common handle.

Further, telescopic upper end is including fixed section of thick bamboo, has seted up axial spacing groove on the lateral wall of fixed section of thick bamboo, the swing handle includes the rotary rod with spacing groove circumference joint.

Furthermore, the limiting groove is provided with two at least, and one end and limiting groove circumference joint, the other end of rotary rod are connected with and dial the ring.

The invention has the beneficial effects that: through the design of the through holes, nuts on bolts with different lengths can be screwed, and the nuts can be adsorbed in the screwing process, so that the screwing reliability is ensured; the mounting groove arranged on the side face is matched with a common handle, the nut can be screwed on the same plane, the toggle ring can slide up and down along the fixed cylinder, the use limitation of different operation spaces is further adapted, and the nut can be screwed above the sleeve; the telescopic rod is pressed against the upper end face of the nut, the telescopic rod which is opposite to the nut up and down is compressed, and then the peripheral telescopic rod clamps the nut, so that different clamping shapes can be constructed, and the nut can be matched with nuts of different shapes and different specifications; because the strong magnetic ring and the lower port of the sleeve are separated by a certain distance, the sleeve can be driven to press the nut under the magnetic absorption of the strong magnetic ring, and then the telescopic rod can be automatically compressed to construct a clamping groove matched with the nut, and the telescopic rod is not required to be compressed by manually pressing the sleeve.

Drawings

In order to illustrate the embodiments of the invention more clearly, the drawings that are needed in the description of the embodiments will be briefly described below, it being apparent that the drawings in the following description are only some embodiments of the invention, and that other drawings may be derived from those drawings by a person skilled in the art without inventive effort.

FIG. 1 is a schematic cross-sectional view of the present invention;

FIG. 2 is a top view of the present invention;

FIG. 3 is a top view of the mounting ring of FIG. 1;

fig. 4 is a schematic structural view of the telescopic rod in fig. 1.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.

Embodiment 1, a magnetic telescopic sleeve, as shown in fig. 1, includes a sleeve 1 and a strong magnetic ring 2 disposed in the sleeve 1, where the sleeve 1 includes a lower end portion for screwing a nut and an upper end portion for connecting a rotating handle 9, the lower end portion may be directly clamped to the nut to be screwed, the rotating handle 9 is manually operated to rotate to drive the sleeve 1 to rotate, and the sleeve 1 drives the nut to be detached from the bolt; when the nut is screwed, the powerful magnetic ring 2 can reliably adsorb the nut, and the nut is prevented from falling off.

And through holes 10 which are communicated up and down are formed in the upper end part and the lower end part, bolts can pass through the through holes, and the lower end part of the sleeve 1 can be clamped to the nuts no matter how long the bolts with the nuts are. The strong magnetic ring 2 is connected in a through hole 10 at the lower end part through a spiral spring 8, the spiral spring 8 can stretch up and down, and then the strong magnetic ring 2 is driven to change the distance between the strong magnetic ring and the nut, and the strong magnetic ring 2 is ensured to meet the requirements of nut adsorption at different heights. The inner diameters of the spiral spring 8 and the powerful magnetic ring 2 are larger than the inner diameter of the through hole 10, so that interference with a bolt of the through hole 10 is avoided.

In embodiment 2, the magnetic telescopic sleeve is provided with an inner cylinder 3 vertically corresponding to the through hole 10 in the lower end portion, the inner cylinder 3 divides the lower end portion into an inner hole 4 and an outer annular groove 5, the inner diameter of the inner hole 4 is the same as the diameter of the through hole 10, the height between the lower end surface of the inner cylinder 3 and the lower port of the through hole 10 is greater than the height of a nut to be screwed, and the coil spring 8 is connected to the lower end portion of the inner cylinder 3.

An installation ring 6 is arranged between the outer wall of the inner cylinder 3 and the inner wall of the sleeve 1 in an interference fit manner, as shown in fig. 3, the installation ring 6 is provided with closely adjacent fixing holes 6-1, and telescopic rods 7 are fixedly clamped in the fixing holes 6-1; as shown in figure 4, the telescopic rod 7 comprises a prismatic rod 7-2 which is fixedly clamped with the fixing hole 6-1, a telescopic sleeve 7-1 is connected below the prismatic rod 7-2, and a thin spring 7-3 which axially supports the prismatic rod 7-2 is arranged in the telescopic sleeve 7-1. When the nut is screwed, the telescopic rod 7 is pressed against the upper end face of the nut, the telescopic rod which is opposite to the nut up and down is compressed, and then the peripheral telescopic rod clamps the nut, so that different clamping shapes can be constructed, and the nut can be matched with nuts of different shapes and different specifications.

When the thin springs 7-3 are compressed, the sum of the elastic forces of the thin springs 7-3 is smaller than the adsorption force of the powerful magnetic ring 2. Because the strong magnetic ring 2 and the lower port of the sleeve 1 are separated by a certain distance, the sleeve 1 can be driven to press the nut under the magnetic absorption of the strong magnetic ring 2, and the telescopic rod 7 can be automatically compressed to form a clamping groove matched with the nut, and the telescopic rod is not required to be compressed by manually pressing the sleeve.

Or the telescopic rod 7 comprises a telescopic sleeve fixedly connected with the fixing hole in a clamping manner, a prismatic rod extending downwards is inserted in the telescopic sleeve, thin springs axially supporting the prismatic rod are arranged in the telescopic sleeve, and when the thin springs are compressed, the sum of the elastic force of each thin spring is smaller than the adsorption force of the powerful magnetic ring.

The other structure of this embodiment is the same as embodiment 1.

Embodiment 3, the side wall of the lower end of the sleeve 1 is provided with an installation groove 1-1 for connecting a common handle, and the installation groove arranged on the side surface is matched with the common handle, so that a nut can be screwed on the same plane, and the application and operation range of the invention is expanded.

The other structure of this embodiment is the same as

embodiment

1 or 2.

Embodiment 4, as shown in fig. 1 and 2, the upper end of the sleeve 1 includes a fixed cylinder 1-2, an axial limiting groove 1-3 is formed in a side wall of the fixed cylinder 1-2, and the rotating handle 9 includes a rotating rod 11 circumferentially engaged with the limiting groove 1-3.

Furthermore, at least two limiting grooves 1-3 are arranged, one end of a rotating rod 11 is circumferentially clamped with the limiting grooves 1-3, and the other end of the rotating rod is connected with a poking ring 12. The toggle ring 12 can slide up and down along the fixed cylinder 1-2 to adapt to the use limitation of different operation spaces, and the nut can be screwed above the sleeve 1.

The other structure of this embodiment is the same as

embodiment

1, 2 or 3.

Nothing in this specification is intended to be exhaustive of all conventional and well known techniques.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. Magnetic force telescope tube, its characterized in that: the magnetic flux-cored wire comprises a sleeve (1) and a strong magnetic ring (2) arranged in the sleeve (1), wherein the sleeve (1) comprises a lower end part of a screwing nut and an upper end part of a connecting screwing handle (9), through holes (10) which are communicated up and down are formed in the inner end part and the lower end part of the upper end part, the strong magnetic ring (2) is connected in the through hole (10) of the lower end part through a spiral spring (8), and the inner diameters of the spiral spring (8) and the strong magnetic ring (2) are larger than the inner diameter of the through hole (10);

an inner cylinder (3) vertically corresponding to the through hole (10) is arranged in the lower end part of the screwing nut, the lower end part is divided into an inner hole (4) and an outer annular groove (5) by the inner cylinder (3), the inner diameter of the inner hole (4) is the same as the diameter of the through hole (10), and the height between the lower end surface of the inner cylinder (3) and the lower port of the through hole (10) is larger than the height of the nut to be screwed;

a mounting ring (6) is arranged between the outer wall of the inner barrel (3) and the inner wall of the sleeve (1), the mounting ring (6) is provided with closely adjacent fixing holes (6-1), and a telescopic rod (7) is fixedly clamped in the fixing holes (6-1);

the telescopic rod (7) comprises a prismatic rod (7-2) fixedly connected with the fixing hole (6-1) in a clamping mode, a telescopic sleeve (7-1) is connected below the prismatic rod (7-2), a thin spring (7-3) axially supporting the prismatic rod (7-2) is arranged in the telescopic sleeve (7-1), and when the thin spring (7-3) is compressed, the sum of the elastic force of each thin spring (7-3) is smaller than the adsorption force of the powerful magnetic ring (2); or the telescopic rod (7) comprises a telescopic sleeve fixedly connected with the fixing hole in a clamping mode, a prismatic rod extending downwards is inserted in the telescopic sleeve, thin springs axially supporting the prismatic rod are arranged in the telescopic sleeve, and when the thin springs are compressed, the sum of the elastic force of each thin spring is smaller than the adsorption force of the powerful magnetic ring.

2. The magnetic telescoping sleeve of claim 1, wherein: the side wall of the lower end part of the sleeve (1) is provided with an installation groove (1-1) for connecting a common handle.

3. The magnetic telescoping sleeve of claim 2, wherein: the upper end of the sleeve (1) comprises a fixed barrel (1-2), an axial limiting groove (1-3) is formed in the side wall of the fixed barrel (1-2), and the rotating handle (9) comprises a rotating rod (11) which is circumferentially clamped with the limiting groove (1-3).

4. The magnetic telescoping sleeve of claim 3, wherein: at least two limiting grooves (1-3) are arranged, one end of the rotating rod (11) is circumferentially clamped with the limiting grooves (1-3), and the other end of the rotating rod is connected with a stirring ring (12).