阅读说明：本技术 狭小空间定扭矩螺栓的拧紧装置、制作方法及拧紧方法 (Tightening device, manufacturing method and tightening method for fixed-torque bolt in narrow space ) 是由 刘备 陈啸天 程卫民 于 2021-09-06 设计创作，主要内容包括：本发明涉及一种狭小空间定扭矩螺栓的拧紧装置、制作方法及拧紧方法。本发明狭小空间螺栓定扭矩拧紧装置,包括开口扳手、拧紧螺母,拧紧螺母固定连接在开口扳手的手持部上表面,开口扳手的开口尺寸与待拧螺栓的尺寸配套,拧紧螺母的外表面形状与扭力扳手的套筒尺寸相适应。本发明狭小空间定扭矩螺栓的拧紧装置,其可用于狭小空间有扭力要求的螺栓拧紧,结构简单,实用性强。(The invention relates to a tightening device, a manufacturing method and a tightening method for a fixed-torque bolt in a narrow space. The fixed-torque bolt tightening device in the narrow space comprises an open spanner and a tightening nut, wherein the tightening nut is fixedly connected to the upper surface of a handheld portion of the open spanner, the size of an opening of the open spanner is matched with the size of a bolt to be tightened, and the shape of the outer surface of the tightening nut is matched with the size of a sleeve of a torque spanner. The tightening device for the fixed-torque bolt in the narrow space can be used for tightening the bolt with the torque requirement in the narrow space, and is simple in structure and high in practicability.)

1. The utility model provides a narrow and small space decides tightening device of moment of torsion bolt which characterized in that: the opening wrench comprises an opening wrench (1) and a tightening nut (2), wherein the tightening nut (2) is fixedly connected to the upper surface of a handheld portion (11) of the opening wrench (1), the size of an opening (12) of the opening wrench (1) is matched with the size of a bolt to be tightened, and the shape of the outer surface of the tightening nut (2) is matched with the size of a sleeve of a torque wrench.

2. The tightening device for a narrow-space constant-torque bolt according to claim 1, characterized in that: the distance from the center of the opening (12) to the center line of the threaded hole of the screwing nut (2) is L, and the L needs to meet the space requirement of the overall height H of the torque wrench after being connected with the sleeve.

3. The tightening device for a constant-torque bolt according to claim 1 or 2, characterized in that: also comprises a torque wrench with a sleeve.

4. A method for manufacturing a tightening device for a constant-torque bolt according to claim 1 or 2, characterized in that: the method comprises the following steps:

the method comprises the following steps: measuring the height H of the whole body of the torque wrench connected with the sleeve, and then measuring the distance L between the bolt to be screwed and the space which can meet the height of the whole body of the torque wrench connected with the sleeve;

step two: the length L is measured on the open spanner from the center of the opening, and the tightening nut is welded at the measured position.

5. The tightening method of the fixed-torque bolt in the narrow space is characterized in that: a tightening apparatus for a constant-torque bolt using a narrow space according to claim 1 or 2.

6. The tightening method of a narrow-space constant-torque bolt according to claim 4, characterized in that: and moving the use position of the torque wrench outwards, and tightening the bolt by using the open end wrench.

Technical Field

The invention belongs to the technical field of lever principles, relates to a bolt tightening device, and particularly relates to a device for tightening a fixed-torque bolt in a narrow space.

Background

After the equipment and process piping are installed in the field, some bolts may have torque requirements. Particularly, when pump equipment is installed on site, the foundation bolts of the motors of the pump equipment need to be screwed down after secondary alignment, and a certain torsion value is achieved when the foundation bolts are required to be screwed down. However, since the space 30 between the motor body bracket 10 and the anchor bolt 20 is narrow (see fig. 1), the space is not enough, and the torque wrench cannot enter the space after being installed in the socket. Therefore, there is a need for a tightening device for a bolt that requires a torque in a narrow space.

Disclosure of Invention

The invention aims to provide a tightening device for a fixed-torque bolt in a narrow space, which can be used for tightening the bolt with a torque requirement in the narrow space and has the advantages of simple structure and strong practicability.

The invention aims to solve another technical problem of providing a manufacturing method of a tightening device for a fixed-torque bolt in a narrow space.

The invention provides a method for screwing a fixed-torque bolt in a narrow space.

The tightening device for the fixed-torque bolt in the narrow space comprises an open-end wrench and a tightening nut, wherein the tightening nut is fixedly connected to the upper surface of a handheld part of the open-end wrench, the size of an opening of the open-end wrench is matched with the size of a bolt to be tightened, and the shape of the outer surface of the tightening nut is matched with the size of a sleeve of the torque wrench.

According to the tightening device for the fixed-torque bolt in the narrow space, disclosed by the invention, the distance from the center of the opening to the center line of the threaded hole of the tightening nut is L, and the L needs to meet the space requirement of the overall height H after the torque wrench is connected with the sleeve.

The invention relates to a tightening device for a fixed-torque bolt in a narrow space, which further comprises a torque wrench with a sleeve.

The invention relates to a manufacturing method of a tightening device of a fixed-torque bolt in a narrow space, which comprises the following steps:

the method comprises the following steps: measuring the height H of the whole body of the torque wrench connected with the sleeve, and then measuring the distance L between the bolt to be screwed and the space which can meet the height of the whole body of the torque wrench connected with the sleeve;

step two: the length L is measured on the open spanner from the center of the opening, and the tightening nut is welded at the measured position.

The invention relates to a method for tightening a fixed-torque bolt in a narrow space, which utilizes the tightening device for the fixed-torque bolt in the narrow space.

The invention relates to a method for screwing a fixed-torque bolt in a narrow space, which moves a torque wrench outwards at a use position and screws the bolt by using an open end wrench.

When the tool is manufactured, one open end wrench matched with a bolt needing to be screwed is used, one torque wrench sleeve is used, and one nut with the same specification as the sleeve is used. Firstly, the height H of the torque wrench after the sleeve is installed is measured, and then the distance L from the bolt to the space which can meet the height of the torque wrench is measured. The length L is measured on the open spanner from the center of the opening, and the tightening nut is welded at the measured position.

The tightening device for the fixed-torque bolt in the narrow space comprises the open-end wrench and the tightening nut, wherein the tightening nut is fixedly connected to the upper surface of the handheld part of the open-end wrench, when the tightening device is used, the open-end wrench is placed at the position of the bolt to be tightened, the torque wrench sleeve is arranged at the position of the tightening nut, and the tightening device can be used for tightening the bolt with the torque requirement in the narrow space, and is simple in structure and high in practicability.

The manufacturing method of the tightening device for the fixed-torque bolt in the narrow space only needs to select the open-ended wrench matched with the bolt to be tightened and the nut (as the tightening nut) with the same specification as the sleeve of the torque wrench, and is simple and easy to implement and high in practicability.

The method for screwing the fixed-torque bolt in the narrow space utilizes the screwing device of the fixed-torque bolt in the narrow space to move the use position of the torque wrench outwards and utilizes the open-end wrench to screw the bolt, so that the method is simple and easy to implement and has strong practicability.

The bolt fixed torque tightening device for narrow space of the invention is further explained with reference to the attached drawings.

Drawings

FIG. 1 is a schematic view of the space between a motor body support and an anchor bolt;

FIG. 2 is a schematic structural view of the tightening device for fixing the torque of the bolt in a narrow space according to the present invention;

fig. 3 is a view showing a state of use of the tightening apparatus for fixing a bolt torque in a narrow space according to the present invention.

Detailed Description

As shown in FIG. 2, the tightening device for a fixed-torque bolt in a narrow space comprises an open end wrench 1 and a tightening nut 2, wherein the tightening nut 2 is fixedly connected to the upper surface of a handheld part 11 of the open end wrench 1, the size of an opening 12 of the open end wrench 1 is matched with the size of a bolt to be tightened, and the shape of the outer surface of the tightening nut 2 is matched with the size of a sleeve 4 of a torque wrench 3. In this embodiment, the tightening nut 2 is welded and fixed to the open end wrench 1.

The distance from the center of the opening 12 to the center line of the threaded hole of the tightening nut 2 is L, and L needs to satisfy the space requirement of the overall height H of the torque wrench after being connected with the sleeve.

The tightening device for the fixed-torque bolt in the narrow space can also comprise a torque wrench to be sleeved.

As shown in fig. 2 and 3, the manufacturing method of the tightening device for the fixed-torque bolt in the narrow space of the invention comprises the following steps:

the method comprises the following steps: the height H of the whole body after the torque wrench 3 is connected with the sleeve 4 is measured, and then the distance L from the bolt 20 to be screwed to the space which can meet the height of the whole body after the torque wrench 3 is connected with the sleeve 4 is measured.

Step two: the length L is measured on the open spanner from the center of the opening, and the tightening nut is welded at the measured position.

As shown in fig. 3, in the tightening method of the fixed torque bolt in a narrow space according to the present invention, the sleeve 4 of the torque wrench 3 is fitted over the tightening nut 2 by using the tightening device of the fixed torque bolt in a narrow space, and the bolt is tightened by moving the torque wrench to the outside in the use position.

The torque value required to tighten the bolt to be tightened (anchor bolt 20) in operation is F1, the torque value at the point of tightening the bolt is F2, and F1 is calculated as F2 × L according to the force.

According to the tightening device for the fixed-torque bolt in the narrow space, an open-ended wrench is selected according to the specification of the foundation bolt in the using process, and the torque value of the torque wrench is adjusted according to the stress calculation. The device is not limited by space, can be freely applied in narrow operation space, and has simple structure and strong practicability.

The above-mentioned embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solution of the present invention by those skilled in the art should fall within the protection scope defined by the claims of the present invention without departing from the spirit of the present invention.