CN215789495U

CN215789495U - Ratchet sleeve with adjustable torsion

Info

Publication number: CN215789495U
Application number: CN202121652145.1U
Authority: CN
Inventors: 崔忠信; 刘海峰; 琚小然; 孟万忠; 田兴; 李生建
Original assignee: HBIS Co Ltd
Current assignee: HBIS Co Ltd
Priority date: 2021-07-20
Filing date: 2021-07-20
Publication date: 2022-02-11
Anticipated expiration: 2031-07-20

Abstract

The utility model discloses a ratchet sleeve with adjustable torsion, which belongs to the technical field of hardware tools and aims to improve the working efficiency of equipment maintenance. The sleeve is provided with the ratchet wheel and pawl mechanism, can be matched with a ratchet wheel wrench for use, can also be matched with a common wrench to realize continuous rotation operation of a bolt or a nut, can be flexibly combined with various wrenches, is very convenient to use and carry, and can effectively improve the working efficiency of equipment maintenance.

Description

Ratchet sleeve with adjustable torsion

Technical Field

The utility model relates to a ratchet sleeve with adjustable torque force, and belongs to the technical field of hardware tools.

Background

The sleeve is one of main tools in the process of equipment maintenance and is used for fastening or loosening equipment parts such as bolts, nuts and the like. However, the existing sleeve has a single function, can only be used together with a special ratchet wrench, is inconvenient to carry, has great limitation on combination flexibility, causes great inconvenience for use, and influences the working efficiency of equipment maintenance to a great extent.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a ratchet sleeve with adjustable torsion aiming at the defects of the prior art so as to improve the working efficiency of equipment maintenance.

In order to achieve the purpose, the utility model adopts the following technical scheme:

the utility model provides a torsion adjustable ratchet sleeve, is including initiative cover (1) that is equipped with the spanner draw-in groove, passive cover (3) and the ratchet pawl mechanism that are equipped with nut or bolt head draw-in groove, initiative cover (1) and passive cover (3) are coaxial each other and rotate between the two and are connected, ratchet pawl mechanism installs between initiative cover (1) and passive cover (3).

The ratchet sleeve with the adjustable torsion comprises a ratchet wheel (4), a spring (6) and a straight rod-shaped pawl (7), wherein the ratchet wheel (4) is coaxially fixed on the driving sleeve (1), the spring (6) and the pawl (7) are installed in the same radial hole in the driven sleeve (3), the head end of the pawl (7) is opposite to teeth on the outer edge of the ratchet wheel (4), one end of the spring (6) abuts against the driven sleeve (3), and the other end of the spring abuts against the tail end of the pawl (7), so that pressing force for the ratchet wheel (4) is provided for the pawl (7).

According to the ratchet sleeve with the adjustable torsion, each tooth of the ratchet wheel (4) is provided with a vertical face which is parallel to the diameter of the ratchet wheel (4) and the axis of the ratchet wheel (4), and the end face of the head end of the pawl (7) is an inclined face and is opposite to the vertical face of the tooth of the ratchet wheel (4).

The end face of the head end of the pawl (7) and the axis of the pawl sleeve are in an included angle of 30-60 degrees.

The torque force adjustable ratchet sleeve is characterized in that radial holes for mounting the spring (6) and the pawl (7) on the driven sleeve (3) are through threaded holes, and the outer ends of the threaded holes are provided with the adjusting bolts (5).

According to the ratchet sleeve with the adjustable torsion, the driving sleeve (1) is rotatably connected with the driven sleeve (3) through the U-shaped bolt (2), the middle of the U-shaped bolt (2) is located in the long hole (10) on one side of the driven sleeve (3), two ends of the U-shaped bolt respectively penetrate through the two round holes on the other side of the driven sleeve (3), and the two straight arms of the bolt (2) are clamped in the annular groove (9) in the driving sleeve (1).

According to the ratchet sleeve with the adjustable torsion, the ratchet (4) is sleeved on the boss (8) at the end part of the driving sleeve (1).

According to the ratchet sleeve with the adjustable torsion, the ratchet (4) is in interference fit with the boss (8) at the end part of the driving sleeve (1).

According to the ratchet sleeve with the adjustable torsion, the tail end of the pawl (7) is provided with a clamping groove matched with the end part of the spring (6).

The sleeve is provided with the ratchet wheel and pawl mechanism, can be matched with a ratchet wheel wrench for use, can also be matched with a common wrench to realize continuous rotation operation of a bolt or a nut, can be flexibly combined with various wrenches, is very convenient to use and carry, and can effectively improve the working efficiency of equipment maintenance.

The adjusting bolt is used for adjusting the fastening pre-tightening torque of the sleeve, so that the sleeve can meet the fastening requirements of bolts with different pre-tightening forces, the universality of the sleeve is improved, and the working efficiency of equipment maintenance is further improved.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

FIG. 1 is a front view of the present invention;

FIG. 2 is a half-sectional view of the present invention;

FIG. 3 is a cross-sectional view A-A of the present invention;

FIG. 4 is a cross-sectional view B-B of the present invention;

FIG. 5 is a top view of the present invention;

FIG. 6 is a bottom view of the present invention;

FIG. 7 is a schematic structural view of the active sheath of the present invention;

fig. 8 is a schematic structural view of the passive sleeve of the present invention.

The drawing marks are 1, an active sleeve, 2, a bolt, 3, a passive sleeve, 4, a ratchet wheel, 5, an adjusting bolt, 6, a spring, 7, a pawl, 8, a boss, 9, a groove, 10, a long hole, 11 and a threaded hole.

Detailed Description

The utility model provides a ratchet sleeve with torque adjustment, which can realize the functions of a ratchet and a torque wrench, and the structure is further explained by combining the attached drawings.

Referring to fig. 1, 2, 3 and 6, the present invention includes an active sleeve 1, a passive sleeve 3, a latch 2, a ratchet 4, an adjusting bolt 5, a spring 6 and a pawl 7; the ratchet wheel 4 is arranged on a boss 8 of the driving sleeve 1 and locked in an interference fit mode; the pawl 7 is arranged in a radial through hole of the driven sleeve 3 and can axially slide along the through hole, the outer end of the through hole is provided with internal threads which are threaded holes, and the adjusting bolt 5 is arranged in the threaded holes; one end of the spring 6 is arranged in a clamping groove at the tail end of the pawl 7, and the other end of the spring props against the adjusting bolt 5; the U-shaped bolt 2 passes through a long hole 10 at one side of the driven sleeve 3 and the annular groove 9 on the driving sleeve 1, and the end part of the U-shaped bolt is inserted into two round holes at the other side of the driven sleeve 3 so as to realize the rotary connection between the driving sleeve 1 and the driven sleeve 3.

As can be seen in fig. 4, the pawl 7 is urged against the surface of the ratchet 4 by the spring 6. The end of the pawl 7 is an inclined surface, and the inclined angle (the included angle between the inclined surface and the axis) is 30-60 degrees. The pawl 7 slides relative to the ratchet wheel 4, and the inclined surface of the pawl 7 is arranged opposite to the vertical surface of the teeth of the ratchet wheel 4.

The use mode of the utility model is completely the same as that of the common sleeve, and any skilled person can use the utility model.

Before use, the maximum torque of the ratchet sleeve is required to be adjusted through the adjusting bolt 5, when the ratchet sleeve reaches the maximum torque, the ratchet 4 jacks up the pawl 7, and transmission is stopped; when the maximum torque of the ratchet sleeve is smaller than a set value, the pawl 7 is attached to the surface of the ratchet 4 under the action of the spring to block the movement of the ratchet, so that the torque is transmitted.

According to the utility model, the ratchet wheel and pawl mechanism and the spring are integrated into the sleeve structure, so that the ratchet wheel and pawl mechanism not only has a ratchet wheel function, but also can adjust the fastening pre-tightening torque according to requirements, thereby meeting the fastening requirements of a plurality of bolts with different pre-tightening forces and improving the working efficiency by times.

Claims

1. The ratchet sleeve with the adjustable torsion is characterized by comprising an active sleeve (1) provided with a wrench clamping groove, a passive sleeve (3) provided with a nut or bolt head clamping groove and a ratchet and pawl mechanism, wherein the active sleeve (1) and the passive sleeve (3) are coaxial with each other and are rotationally connected with each other, and the ratchet and pawl mechanism is arranged between the active sleeve (1) and the passive sleeve (3).

2. A torque adjustable ratchet sleeve according to claim 1, wherein the ratchet-pawl mechanism comprises a ratchet wheel (4), a spring (6) and a straight rod-shaped pawl (7), the ratchet wheel (4) is coaxially fixed on the driving sleeve (1), the spring (6) and the pawl (7) are installed in the same radial hole on the driven sleeve (3), the head end of the pawl (7) is opposite to the teeth on the outer edge of the ratchet wheel (4), one end of the spring (6) is pressed against the driven sleeve (3), and the other end of the spring is pressed against the tail end of the pawl (7), so as to provide the pawl (7) with pressing force on the ratchet wheel (4).

3. A torque adjustable ratchet sleeve according to claim 2, wherein each tooth of the ratchet wheel (4) has an elevation parallel to both the diameter of the ratchet wheel (4) and the axis of the ratchet wheel (4), and the end surface of the leading end of the pawl (7) is beveled and opposite to the elevation of the tooth of the ratchet wheel (4).

4. A torque adjustable ratchet sleeve according to claim 3, wherein the angle between the end surface of the head end of the pawl (7) and its axis is 30 ° to 60 °.

5. A torsion adjustable ratchet sleeve according to any one of claims 2 to 4, wherein the radial holes in the driven sleeve (3) for mounting the spring (6) and the pawl (7) are through threaded holes, and the outer ends of the threaded holes are provided with adjusting bolts (5).

6. A torsion adjustable ratchet sleeve according to claim 5, wherein the driving sleeve (1) is rotatably connected with the driven sleeve (3) through a U-shaped bolt (2), the middle part of the U-shaped bolt (2) is positioned in a long hole (10) at one side of the driven sleeve (3), two ends of the U-shaped bolt respectively penetrate through two round holes at the other side of the driven sleeve (3), and two straight arms of the bolt (2) are clamped in an annular groove (9) on the driving sleeve (1).

7. A torque adjustable ratchet sleeve according to claim 6, wherein the ratchet (4) is fitted over a boss (8) at the end of the driving sleeve (1).

8. A torque adjustable ratchet sleeve according to claim 7, wherein the ratchet (4) is an interference fit with the boss (8) at the end of the driving sleeve (1).

9. A torsion adjustable ratchet sleeve according to claim 8, wherein the tail end of the pawl (7) is provided with a catch which mates with the end of the spring (6).