CN116572188B

CN116572188B - Limited space flange bolt fastening tool

Info

Publication number: CN116572188B
Application number: CN202310446474.8A
Authority: CN
Inventors: 李安训; 薛传文; 林滨; 杨卫君; 张睿洋
Original assignee: Lihuayi Lijin Refining and Chemical Co Ltd
Current assignee: Lihuayi Lijin Refining and Chemical Co Ltd
Priority date: 2023-04-24
Filing date: 2023-04-24
Publication date: 2025-09-09
Anticipated expiration: 2043-04-24
Also published as: CN116572188A

Abstract

The invention relates to the technical field of mechanical tools and discloses a limited space flange bolt fastening tool which comprises a gear wrench, a supporting arm and an auxiliary arm, wherein the gear wrench comprises a cover body and a gear set, the gear set is arranged in the cover body, the two supporting arms are respectively movably arranged at the top of the cover body, an adjustable clamping sleeve is arranged at the tail end of each supporting arm, and the lower end of the cover body is hinged with the auxiliary arm. The invention can be used for mounting and dismounting the limited space flange bolts. The force for installing and detaching the nut is extended to the outside of the flange group through gear transmission, so that the working space for installing and detaching the nut is enlarged. The invention has good use effect, convenient movement, high efficiency and manpower and material resource saving, and can work by a single person.

Description

Limited space flange bolt fastening tool

Technical Field

The invention relates to the technical field of mechanical tools, in particular to a limited space flange bolt fastening tool.

Background

In the pipeline inspection and maintenance process of petrochemical enterprises, flange bolts are often required to be installed and detached, because pipelines in a device area are very many, the detaching space of a plurality of flanges is relatively small, and the bolts are not easy to install and detach, because electric or pneumatic tools are generally relatively large, the use of the tools in a narrow space is limited, and currently, commonly used tools are generally openings, plum blossom or ratchet wrenches, and in order to prevent the situation of shaft rotation when the tools are used, two people are generally required to cooperate for detaching and installing. Therefore, the existing disassembly and assembly method and tool not only waste manpower and material resources, but also consume time and have low working efficiency in the use process.

Disclosure of Invention

The invention aims to overcome the defects existing in the prior art and provides a limited space flange bolt fastening tool.

In order to achieve the above purpose, the technical scheme of the invention is that the limited space flange bolt fastening tool is characterized by comprising a gear wrench, a supporting arm and an auxiliary arm, wherein the gear wrench comprises a cover body and two gear sets, the gear sets comprise an open gear, two auxiliary wheels and a driving wheel, the two auxiliary wheels are respectively meshed with the driving wheel and the open gear, the gear sets are arranged in the cover body, an inserting port is arranged at the front end of the cover body, the open gear is arranged at the inserting port, the top of a central shaft of the driving wheel penetrates through the top of the cover body, the central shafts of the two auxiliary wheels are rotatably connected with the cover body, the bottom of the central shaft of the driving wheel is rotatably connected with the cover body, wrench heads are movably inserted in the opening gear, the two supporting arms are respectively movably arranged at the top of the cover body and are positioned at two ends of the inserting port, the tail end of the supporting arm is provided with an adjustable jacket, the lower end of the cover body is hinged with the auxiliary arm, the auxiliary arm comprises an adjustable connecting rod and an adjustable open wrench, and the upper end of the adjustable connecting rod is hinged with the cover body, and the lower end of the adjustable open wrench.

The cover body is formed by connecting an upper cover and a lower cover, the gear set is located in a cavity formed by encircling the upper cover and the lower cover, two grooves and a through hole are respectively formed in the inner wall of the upper cover, three grooves are formed in the inner wall of the lower cover, the upper end and the lower end of a central shaft of the auxiliary wheel are respectively connected with the upper cover grooves and the corresponding lower cover grooves in a rotating mode, and the upper end of the central shaft of the driving wheel penetrates through the through hole of the upper cover and the lower end of the central shaft of the driving wheel is connected with the corresponding lower cover grooves in a rotating mode.

The head end of the supporting arm is provided with a rectangular chute, the top of the upper cover is provided with two screws, and the two screws are respectively movably inserted into the chute of the two supporting arms and fixed through fastening nuts.

Further, a fixed seat is arranged at the lower end of the cover body, and the upper end of the telescopic connecting rod is hinged with the fixed seat.

The adjustable clamping sleeve comprises a fixed clamp and a movable clamp, wherein the fixed clamp is connected with the tail end of the supporting arm and integrally formed with the tail end of the supporting arm, and the movable clamp is movably sleeved with the supporting arm.

Further, the top section of the central shaft of the driving wheel is quadrilateral.

The invention has the beneficial effects that:

(1) The invention can be used for mounting and dismounting the limited space flange bolts. The force for installing and detaching the nut is extended to the outside of the flange group through gear transmission, so that the working space for installing and detaching the nut is enlarged.

(2) The wrench head is movably inserted into the opening gear, so that the wrench head can be conveniently replaced to adapt to nuts with different specifications, different use occasions can be met, and the service life of the wrench is prolonged.

(3) The design of the supporting arm can realize the stable supporting function on the gear wrench, the design of the rectangular chute at the head end of the supporting arm can realize the adjustment of the outward extension length of the supporting arm, and the design of the jacket with the adjustable tail end can clamp nuts with different sizes.

(4) The design of the auxiliary arm can realize fixing the nut at the lower end of the double-ended bolt, and the function of the auxiliary arm is to prevent the nut at the lower end from rotating along with the double-ended bolt when the gear wrench applies force to the nut at the upper end of the double-ended bolt.

(5) The invention has good use effect, convenient movement, high efficiency and manpower and material resource saving, and can work by a single person.

Drawings

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

Fig. 2 is an exploded view of the present invention.

In the figure, 1, a gear wrench, 11, an upper cover, 12, a lower cover, 13, an open gear, 14, a driving wheel, 15, an auxiliary wheel, a wrench head 16, 2, a supporting arm, 21, a fixed clamp, 22, a movable clamp, 23, a chute, 24, a fastening nut, 3, an auxiliary arm, 31, a telescopic connecting rod, 32, an adjustable open wrench, a fixed seat, 4 and a flange.

Detailed Description

Examples:

As shown in fig. 1 and 2, a limited space flange bolt tightening tool is characterized in that: comprises a gear wrench 1, a supporting arm 2 and an auxiliary arm 3, wherein the gear wrench 1 comprises a cover body and a gear set, the cover body is formed by connecting an upper cover 11 and a lower cover 12, the gear set is positioned in a cavity formed by encircling the upper cover 11 and the lower cover 12, the gear set comprises an opening gear 13, two auxiliary wheels 15 and a driving wheel 14, the two auxiliary wheels 15 are meshed with the driving wheel 14 and the opening gear 13 respectively, an inserting port is arranged at the front end of the cover body, a handle is arranged at the rear end of the cover body, the opening gear 13 is arranged at the inserting port, two grooves and a through hole are respectively arranged on the inner wall of the upper cover 11, three grooves are arranged on the inner wall of the lower cover 12, the upper end and the lower end of a central shaft of the two auxiliary wheels 15 are respectively connected with the two grooves of the upper cover 11 and the corresponding grooves of the lower cover 12 in a rotating way, the upper end of a central shaft of the driving wheel 14 passes through a through hole of the upper cover 11, the lower end of the central shaft is rotationally connected with a corresponding groove of the lower cover 12, a wrench head 16 is movably inserted in the opening gear 13, the wrench head 16 is replaceable to adapt nuts with different specifications, two support arms 2 are respectively movably installed at the top of the upper cover 11 and positioned at two ends of an inserting port, an adjustable clamping sleeve is arranged at the tail end of each support arm 2, each adjustable clamping sleeve comprises a fixing clamp 21 and a movable clamp 22, the fixing clamp 21 is connected with the tail end of each support arm 2 and integrally formed with the tail end of each support arm 2, the movable clamp 22 is movably sleeved with the corresponding support arm 2, a fixed seat 33 is arranged at the lower end of the lower cover 12 and is hinged with an auxiliary arm 3 through the fixed seat 33, the auxiliary arm 3 comprises a telescopic connecting rod 31 and an adjustable opening wrench 32, and the fixed seat 33 is hinged at the upper end of the telescopic connecting rod 31 The lower end is hinged with an adjustable open spanner 32.

In this embodiment, preferably, the head end of the supporting arm 2 is provided with a rectangular chute 23, the top of the upper cover 11 is provided with two screws, and the two screws are movably inserted into the chute 23 of the two supporting arms 2 respectively and are fixed by fastening nuts 24.

In this embodiment, the top section of the central shaft of the driving wheel 14 is preferably quadrangular.

The working principle is that firstly, workers need to confirm the specification of bolts in the disassembled flange 4 on site, determine the size of the wrench head 16 and replace the wrench head, then hold the gear wrench 1 to clamp the wrench head 16 onto the double-headed bolt nuts which need to be assembled or disassembled, then move the adjusting support arm 2 to extend outwards for a length which enables the adjustable jackets at the tail ends of the support arm 2 to be clamped onto the corresponding nuts at the two sides respectively, adjust the moving clamp 22 to clamp the nuts, and tighten the fastening nuts 24 to fix the support arm 2, so that the gear wrench 1 is fixed, and the gear wrench 1 cannot shake or shift when the disassembling and assembling nuts are forced to rotate. Then, the length of the telescopic connecting rod 31 is adjusted so that the adjustable open spanner 32 can be clamped above the corresponding nut below the double-head bolt, the adjusting knob on the adjustable open spanner 32 is adjusted so that the adjustable open spanner 32 clamps the corresponding nut, finally, the driving wheel 14 is forced by the electric or pneumatic spanner, and the driving wheel 14 is rotated to drive the open gear 13 to rotate through the auxiliary wheel 15, so that the nut can be installed or dismounted.

The above-described embodiments are merely preferred embodiments of the present invention, and the present invention is not limited in any way, and other variations and modifications may be made without departing from the technical aspects set forth in the claims.

In the description of the present invention, it should be understood that the terms "orientation" or "positional relationship" are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and to simplify the description, rather than to indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as limiting the invention.

Claims

1. The utility model provides a limit space flange bolt fastening instrument, includes gear wrench, support arm and auxiliary arm, gear wrench includes lid and gear train, the gear train includes opening gear, auxiliary wheel and action wheel, the auxiliary wheel is two, two the auxiliary wheel respectively with action wheel and opening gear intermeshing, the gear train is installed in the lid inside, the lid front end is equipped with the interface, opening gear locates interface department, the center pin top of action wheel passes the lid top, two the center pin and the lid rotation of auxiliary wheel are connected, the center pin bottom and the lid rotation of action wheel are connected, the inside movable grafting of opening gear has the spanner head, the support arm is two respectively movable mounting at the lid top and is located the interface both ends, the support arm tail end is equipped with adjustable clamp sleeve, lid lower extreme articulated auxiliary arm, the auxiliary arm includes scalable connecting rod and adjustable opening wrench, scalable connecting rod upper end articulated lid, lower extreme articulated adjustable opening wrench.

2. The limited space flange bolt fastening tool according to claim 1, wherein the cover body is formed by connecting an upper cover and a lower cover, the gear set is located in a cavity formed by enclosing the upper cover and the lower cover, two grooves and a through hole are respectively formed in the inner wall of the upper cover, three grooves are formed in the inner wall of the lower cover, the upper end and the lower end of a central shaft of the two auxiliary wheels are respectively connected with the upper cover grooves and the corresponding lower cover grooves in a rotating mode, and the upper end of the central shaft of the driving wheel penetrates through the through hole of the upper cover, and the lower end of the central shaft of the driving wheel is connected with the corresponding lower cover grooves in a rotating mode.

3. The fastening tool for the limited space flange bolts according to claim 2, wherein the head end of the supporting arm is provided with a rectangular chute, the top of the upper cover is provided with two screws, and the two screws are movably inserted into the chute of the two supporting arms respectively and fixed by fastening nuts.

4. The tool for fastening a flange bolt in a confined space of claim 1, wherein the lower end of the cover is provided with a fixing base, and the upper end of the telescopic connecting rod is hinged with the fixing base.

5. The confined space flange bolt tightening tool of claim 1, wherein the adjustable clamp comprises a fixed clamp and a movable clamp, the fixed clamp is connected with the tail end of the support arm and is integrally formed with the tail end of the support arm, and the movable clamp is movably sleeved with the support arm.

6. The confined space flange bolt-fastening tool as set forth in claim 1, wherein said drive wheel has a quadrangular top section of its center axis.