CN217801387U

CN217801387U - Restricted space spanner with worm gear structure

Info

Publication number: CN217801387U
Application number: CN202222088744.6U
Authority: CN
Inventors: 孙福江
Original assignee: Weihai Jinde Tools Co ltd
Current assignee: Weihai Jinde Tools Co ltd
Priority date: 2022-08-10
Filing date: 2022-08-10
Publication date: 2022-11-15
Anticipated expiration: 2032-08-10

Abstract

The utility model relates to the technical field of wrenches, and discloses a limited space wrench with a worm gear structure, which comprises a shell, wherein the middle part of the shell is provided with a round hole, and the bottom of one side of the shell is rotatably sleeved with a rotating handle; a worm wheel and a worm are respectively and rotatably arranged on two sides of the inner cavity of the shell, the worm wheel is meshed with the worm, and one end of the rotating handle positioned in the shell is fixedly connected with the bottom end of the worm; and a limiting hole is formed in the middle of the worm wheel and coincides with the round hole. The utility model discloses a strike the spanner and rotate and change the handle for the worm drives the worm wheel and rotates, thereby drives the nut and rotate, realizes the elasticity of nut then, the utility model discloses the direction of the rotation space when can changing the nut rotation, can the slave unit openly carry out the elasticity to the nut in the restricted space, the operation is continuous simple, need not frequent change and not hard up spanner, offers convenience for actual installation and maintenance, has wide market prospect, does benefit to the popularization.

Description

Restricted space spanner with worm gear structure

Technical Field

The utility model relates to a spanner technical field specifically is a limited space spanner with worm gear structure.

Background

Well head device and well control equipment that use in the oil field, along with the improvement of pressure grade, well head and well control equipment highly increase by a wide margin, this has brought the difficulty for on-the-spot installation and normally operate these well head and well control equipment, need reduce the height urgently, and in order to reduce the height, just need compress the size of relevant position, the size of compression flange neck position can be considered to the priority, the compression of this position size just brings when installing and dismantling bolt hexagon nut, bolt axial space is compressed by a wide margin, can't operate with conventional box spanner, with present dedicated spanner that strikes, it is inconvenient to operate.

The current chinese patent that authorizes the notice number and be CN216098624U discloses a confined space is with short box spanner sub-assembly, relates to the ann of the confined space bolt of oil field wellhead assembly and well control equipment and tears technical field open, specifically is a confined space is with short box spanner sub-assembly, including a type box spanner and B type box spanner, a type box spanner's one end fixedly connected with a type connection lug, the ultrashort sleeve has been cup jointed on the a type connection lug, ultrashort telescopic one end is equipped with the hexagonal hole, and the telescopic other end of ultrashort is equipped with the square hole of connection. This short box spanner sub-assembly for confined space through A type box spanner, B type box spanner, A type connection lug, B type connection lug and the cooperation setting of ultrashort telescopic, makes this short box spanner sub-assembly for confined space can realize conveniently installing and removing the confined space hexagon nut of the flange bolt department that well head device and well control were equipped to the oil field use in the in-process that uses.

The above wrench assembly still suffers from the following drawbacks: when in actual use, stretch into the limited space of nut top with the spanner in the back, because the spanner can only rotate above the nut, can't change the direction in rotation space, still need carry out frequent change and not hard up spanner outside equipment, the operation is very inconvenient.

SUMMERY OF THE UTILITY MODEL

In view of the above problems in the prior art, the present invention provides a limited space wrench with a worm gear structure.

In order to achieve the purpose, the utility model provides a limited space wrench with a worm gear structure, which comprises a shell, wherein a round hole is arranged in the middle of the shell, and a rotating handle is rotatably sleeved at the bottom of one side of the shell; a worm wheel and a worm are respectively and rotatably arranged on two sides of the inner cavity of the shell, the worm wheel is meshed with the worm, and one end of a rotating handle positioned in the shell is fixedly connected with the bottom end of the worm; and a limiting hole is formed in the middle of the worm wheel and coincides with the round hole.

Preferably, annular spout has all been seted up to the upper and lower surface of worm wheel, and the stabilizer bar is all installed to the upper and lower surface of casing inner chamber, and the quantity of stabilizer bar is a plurality of and be annular symmetric distribution, and insert in the annular spout and install the slider the bottom of stabilizer bar, the slider slides and sets up in the annular spout.

Preferably, the longitudinal section of the annular chute is in a shape of a Chinese character 'tu' and the convex opening is set as an opening, and the bottom end of the stabilizer bar is inserted into the annular chute from the convex opening and is in sliding connection with the inner wall of the convex opening.

Preferably, the number of the circular holes is two and the circular holes are respectively arranged on the upper surface and the lower surface of the shell.

Preferably, the limiting hole is a regular hexagonal hole.

Preferably, the rotating handle is in a regular hexagonal prism shape.

Compared with the prior art, the utility model provides a limited space spanner with worm gear structure has following beneficial effect:

the utility model discloses when using, with the casing suit in the nut top, the nut card goes into spacing downthehole, rotates the handle through strikeing the spanner for the worm drives the worm wheel and rotates, thereby drives the nut and rotates, realizes the elasticity of nut then, the utility model discloses can change the direction of the rotation space when the nut is rotatory, can openly carry out the elasticity to the nut in the restricted space from equipment, operate in succession simply, need not frequent change and not hard up spanner, for actual installation and maintenance facilitate, have wide market prospect, do benefit to the popularization.

Drawings

Fig. 1 is a schematic top view of the present invention;

FIG. 2 is a schematic view of the internal structure of the housing of FIG. 1 according to the present invention;

FIG. 3 is a schematic sectional front view of the housing of the present invention;

fig. 4 is a schematic cross-sectional view of the worm wheel shown in fig. 3 according to the present invention.

In the figure: 1. a housing; 2. a circular hole; 3. turning a handle; 4. a worm gear; 5. a worm; 6. a limiting hole; 7. an annular chute; 8. a stabilizer bar.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present disclosure more clear, the technical solutions of the embodiments of the present disclosure will be described below clearly and completely with reference to the accompanying drawings of the embodiments of the present disclosure.

The structure, ratio, size and the like shown in the drawings attached to the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by people familiar with the technology, and are not used for limiting the limit conditions which can be implemented by the present invention, so that the present invention does not have the substantial significance in the technology, and any structure modification, ratio relationship change or size adjustment should still fall within the scope which can be covered by the technical content disclosed by the present invention without affecting the efficacy which can be produced by the present invention and the purpose which can be achieved by the present invention. In addition, the terms such as "upper", "lower", "left", "right", "middle", etc. used in the present specification are used for clarity of description only, and are not used to limit the scope of the present invention, and the relative relationship between the terms can be changed or adjusted without substantial technical changes.

Referring to fig. 1-4, a limited space wrench with a worm gear structure comprises a housing 1, wherein a circular hole 2 is formed in the middle of the housing 1, the two circular holes 2 are respectively formed in the upper surface and the lower surface of the housing 1, and a rotating handle 3 is rotatably sleeved at the bottom of one side of the housing 1; a worm wheel 4 and a worm 5 are respectively and rotatably arranged on two sides of an inner cavity of the shell 1, the worm wheel 4 is meshed with the worm 5, and one end of the rotating handle 3, which is positioned in the shell 1, is fixedly connected with the bottom end of the worm 5; the middle part of the worm wheel 4 is provided with a limiting hole 6, and the limiting hole 6 coincides with the round hole 2.

Annular chute 7 has all been seted up to worm wheel 4's upper and lower surface, and stabilizer bar 8 is all installed to the upper and lower surface of 1 inner chamber of casing, and the quantity of stabilizer bar 8 is a plurality of and be annular symmetric distribution, and insert in annular chute 7 and install the slider stabilizer bar 8's bottom, and the slider slides and sets up in annular chute 7, makes things convenient for worm wheel 4 to rotate between upper and lower two sets of stabilizer bar 8.

The longitudinal section of annular spout 7 sets up to the opening for type and tang, and stabilizer bar 8's bottom is inserted annular spout 7 from the tang in and with tang inner wall sliding connection, can improve the rotational stability of worm wheel 4 between two sets of stabilizer bar 8.

The limiting hole 6 is a regular hexagonal hole, and the hexagonal nut is conveniently clamped.

The rotating handle 3 is in a regular hexagonal prism shape, and a knocking wrench is convenient to use to rotate.

The utility model discloses when using, with 1 suit of casing in the nut top, the nut card is gone into to spacing downthehole 6, rotates to change 3 through strikeing the spanner for worm 5 drives worm wheel 4 and rotates, thereby drives the nut and rotates, realizes the elasticity of nut then, the utility model discloses can change the direction of the rotation space when the nut is rotatory, can openly carry out the elasticity to the nut in the restricted space from equipment, operate in succession simply, need not frequent change and not hard up spanner, facilitate for actual installation and maintenance, have wide market prospect, do benefit to the popularization.

The above description is only an exemplary embodiment of the present invention, and is not intended to limit the present invention, the scope of which is defined by the appended claims. Various modifications and equivalents of the invention can be made by those skilled in the art within the spirit and scope of the invention, and such modifications and equivalents should also be considered as falling within the scope of the invention.

Claims

1. A confined space wrench with worm gear structure, includes casing (1), its characterized in that:

a round hole (2) is formed in the middle of the shell (1), and a rotating handle (3) is rotatably sleeved at the bottom of one side of the shell (1);

a worm wheel (4) and a worm (5) are respectively and rotatably arranged on two sides of the inner cavity of the shell (1), the worm wheel (4) is meshed with the worm (5), and one end of the rotating handle (3) positioned in the shell (1) is fixedly connected with the bottom end of the worm (5);

a limiting hole (6) is formed in the middle of the worm wheel (4), and the limiting hole (6) is overlapped with the round hole (2).

2. The confined space wrench with the worm and gear structure as claimed in claim 1, wherein the worm gear (4) has a ring-shaped sliding groove (7) on the upper and lower surfaces thereof, the stabilizer bars (8) are mounted on the upper and lower surfaces of the inner cavity of the housing (1), the stabilizer bars (8) are distributed in a ring-shaped symmetrical manner, the bottom ends of the stabilizer bars (8) are inserted into the ring-shaped sliding groove (7) and are provided with sliding blocks, and the sliding blocks are slidably disposed in the ring-shaped sliding groove (7).

3. The confined space wrench with a worm gear structure as claimed in claim 2, wherein the longitudinal section of the annular chute (7) is in a shape of Chinese character 'tu' and the convex opening is arranged to be open, and the bottom end of the stabilizer bar (8) is inserted into the annular chute (7) from the convex opening and is connected with the inner wall of the convex opening in a sliding manner.

4. The confined space wrench with a worm gear structure as claimed in claim 1, wherein the number of the circular holes (2) is two and are respectively arranged on the upper surface and the lower surface of the housing (1).

5. The confined space wrench with the worm gear structure as claimed in claim 1, wherein the limiting hole (6) is a regular hexagonal hole.

6. The confined space wrench with a worm gear structure as claimed in claim 1, wherein the rotating handle (3) is in the shape of a regular hexagon.