CN216634172U

CN216634172U - Pin-shaft-free ultrastrong torsion explosion-proof ratchet wrench

Info

Publication number: CN216634172U
Application number: CN202220145427.0U
Authority: CN
Inventors: 杨建峰; 王玉; 魏立峰
Original assignee: Shijiazhuang Xuda Explosion Proof Tool Factory Co ltd
Current assignee: Shijiazhuang Xuda Explosion Proof Tool Factory Co ltd
Priority date: 2022-01-19
Filing date: 2022-01-19
Publication date: 2022-05-31
Anticipated expiration: 2032-01-19

Abstract

The utility model discloses a pinless ultrastrong torsion explosion-proof ratchet wrench, which comprises a force application rod, wherein one end of the force application rod is provided with a wrench head, the wrench head comprises a shell, a ratchet wheel, a pawl, a limiting piece and a sealing cover, the shell is provided with an accommodating cavity and a rotating cavity, the accommodating cavity is communicated with the rotating cavity, the ratchet wheel is positioned in the accommodating cavity, the ratchet wheel is rotatably connected with the shell, the pawl comprises an expanded part, a limiting piece and a pawl tip, the expanded part is positioned in the rotating cavity, the expanded part is rotatably connected with the shell, the pawl tip is abutted against a ratchet of the ratchet wheel, the limiting piece is abutted against the limiting piece, the limiting piece is connected with the shell, and the sealing cover is connected with the shell; the utility model ensures that the ratchet wrench has the advantages of unchanged volume, capability of bearing larger torque force, prolonged service life, reduced number of parts, simple and quick assembly, improved working efficiency and suitability for explosion-proof ratchet wrenches.

Description

Pin-shaft-free ultrastrong torsion explosion-proof ratchet wrench

Technical Field

The utility model belongs to the technical field of explosion-proof tool devices, and particularly relates to a pin-shaft-free ultrastrong torsion explosion-proof ratchet wrench.

Background

A ratchet wrench is a tool for rotating a bolt or nut placed in a narrow or difficult-to-access position, and is rotatably connected to an operating lever. The explosion-proof ratchet wrench is the most common manual tool for explosion-proof tools, and is mainly made of beryllium bronze and aluminum bronze, so that heat generated in a short time is absorbed and conducted when the tool and an object rub or impact; copper is soft, has good deformability during friction and impact, is not easy to generate tiny metal particles, and has an explosion-proof effect.

The torsion borne by the existing explosion-proof ratchet wrench is relatively small, and the explosion-proof ratchet wrench is easy to damage when being subjected to larger torsion, and analysis shows that the torsion of the existing explosion-proof ratchet wrench is transferred to the pin shaft by the ratchet of the ratchet wheel abutting against the pawl, the pin shaft is used for the pawl to rotate and connect with the wrench head, namely, the torsion borne by the explosion-proof ratchet wrench is directly related to the shearing strength borne by the pin shaft, and the shearing strength borne by the pin shaft is positively related to the diameter of the pin shaft, namely, the larger the diameter of the pin shaft is, the larger the shearing strength borne by the pin shaft is, namely, the larger the torsion borne by the explosion-proof ratchet wrench is, and conversely, the smaller the torsion borne by the explosion-proof ratchet wrench is; however, due to the limitation of the size of the ratchet wrench, the diameter of the pin shaft cannot be too large, and the torque force borne by the conventional explosion-proof ratchet wrench is small; and because the round pin axle is small, when maintaining, lose easily, cause spanner overall damage, and need change new spanner, caused the waste of resource to the use of round pin axle has still caused the increase of spanner spare part quantity, makes the spanner in the assembling process, causes the equipment loaded down with trivial details, has prolonged the equipment time, has reduced work efficiency.

SUMMERY OF THE UTILITY MODEL

The utility model solves the defects of the prior art, and provides the pin-shaft-free ultrastrong torsion explosion-proof ratchet wrench which has the advantages that the volume is unchanged, the larger torsion can be borne, the number of parts is reduced, and the working efficiency is improved.

In order to achieve the purpose, the technical scheme adopted by the utility model is as follows:

the utility model provides an explosion-proof ratchet spanner of no round pin axle superstrong torsion, includes the application of force pole, the one end of application of force pole is equipped with the wrench end, the wrench end includes casing, ratchet, pawl, locating part and closing cap, the casing is equipped with holds the chamber and rotates the chamber, hold the chamber with it is linked together to rotate the chamber, the ratchet is located hold the intracavity, ratchet rotation connects the casing, the pawl is including expansion portion, spacing portion and pawl point, expansion portion is located rotate the intracavity, expansion portion rotates and connects the casing, the pawl point with the ratchet looks butt of ratchet, spacing portion with locating part looks butt, the locating part is connected the casing, the closing cap is connected the casing.

By way of limitation, the enlarged portion is cylindrically disposed, and the outer surface of the cylindrically disposed enlarged portion is smooth.

As another definition, the rotating chamber is fitted with the enlarged portion, and the inner surface of the rotating chamber is smooth.

As another limitation, one end of the rotation cavity is provided with a stop portion, and the stop portion and the limiting member are respectively located on two sides of the pawl.

As another limitation, the limiting part comprises a spring, a butting column and a limiting cavity, the limiting cavity is arranged along the length direction of the shell, the limiting cavity is communicated with the accommodating cavity, one end of the butting column is connected with one end of the spring, the other end of the spring is abutted against the bottom of the limiting cavity, and the other end of the butting column is abutted against the limiting part.

As another limitation, the diameter of the abutting column is larger than that of the spring, and the diameter of the abutting column is matched with that of the limiting cavity.

As another limitation, the other end of the force application rod is detachably connected with an auxiliary wrench head, and the auxiliary wrench head and the wrench head are different in specification.

As another limitation, the number of the secondary wrench heads is several, and the specifications of the secondary wrench heads are different.

Compared with the prior art, the utility model has the technical progress that:

the wrench head comprises a shell, a ratchet wheel, a pawl, a limiting piece and a sealing cover, wherein the shell is provided with an accommodating cavity and a rotating cavity, the accommodating cavity is communicated with the rotating cavity, the ratchet wheel is positioned in the accommodating cavity and is rotationally connected with the shell, the pawl comprises an expansion part, the limiting part and a pawl tip, the expansion part is positioned in the rotating cavity, and the expansion part is rotationally connected with the shell; the pawl tip is abutted with the ratchet of the ratchet wheel, the limiting part is abutted with the limiting part, the limiting part is connected with the shell, and the sealing cover is connected with the shell; the shell is directly and rotationally connected with the pawl, so that the torque force of the wrench is transmitted to the shell through the pawl abutted by the ratchet wheel, the torque force strength borne by the wrench is improved, and the service life of the wrench is prolonged; the number of parts is reduced, so that the spanner is simple and quick to assemble, and the working efficiency is improved; in conclusion, the ratchet wrench has the advantages that the size of the ratchet wrench is unchanged, larger torque can be borne, the service life of the wrench is prolonged, the number of parts is reduced, the wrench is easy and quick to assemble, the working efficiency is improved, and the ratchet wrench is suitable for the explosion-proof ratchet wrench.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model and not to limit the utility model.

In the drawings:

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural diagram of a housing according to an embodiment of the present invention;

FIG. 3 is a schematic view of a pawl according to an embodiment of the present invention;

FIG. 4 is a schematic diagram of a spring and a post according to an embodiment of the utility model.

Labeling components: 1-force application rod, 2-shell, 201-containing cavity, 202-rotating cavity, 203-limiting cavity, 3-ratchet wheel, 4-pawl, 401-expansion part, 402-limiting part, 403-pawl tip, 5-limiting part, 501-spring, 502-abutting column, 6-sealing cover, 7-stopping part and 8-auxiliary wrench head.

Detailed Description

Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for purposes of illustration and explanation only and are not intended to limit the present invention.

Embodiment is an explosion-proof ratchet spanner of superstrong torsion of no round pin axle

The embodiment discloses a pinless ultrastrong torsion explosion-proof ratchet wrench, as shown in fig. 1, fig. 2 and fig. 3, comprising a force application rod 1, wherein one end of the force application rod 1 is fixedly connected with a wrench head in a welding manner, one end of the force application rod 1 can be also connected with the wrench head in a detachable manner, the detachable connection comprises other connection modes such as bolt connection, plug connection and the like, one end of the force application rod 1 can be connected with the wrench head in an integrated forming mode, the other end of the force application rod 1 can be detachably connected with the auxiliary wrench head 8, the internal structure of the auxiliary wrench head 8 is the same as that of the wrench head, a plurality of auxiliary wrench heads 8 can be provided, the specifications of a plurality of auxiliary wrench heads 8 are different, the specifications of the auxiliary wrench heads 8 are different from those of the wrench head, the auxiliary wrench head 8 with different specifications is replaced, so that the wrench can be suitable for nuts with different specifications, and the application range of the wrench is improved; the wrench head comprises a shell 2, the shell 2 is provided with an accommodating cavity 201 and a rotating cavity 202 through a machine tool, the accommodating cavity 201 is arranged in a step mode close to the end of the force application rod 1, the rotating cavity 202 is located at the junction of the steps, the accommodating cavity 201 is communicated with the rotating cavity 202, and the communicating port of the rotating cavity 202 and the accommodating cavity 201 is smaller than the inner diameter of the rotating cavity 202, so that the rotating stability of the pawl 4 and the shell 2 is improved; the ratchet wheel 3 is positioned in the accommodating cavity 201, the ratchet wheel 3 is rotationally connected with the shell 2, the pawl 4 comprises an expansion part 401, a limiting part 402 and a pawl tip 403, the expansion part 401 is positioned in the rotating cavity 202, the expansion part 401 is rotationally connected with the shell 2, the limiting part 402 of the pawl 4 is positioned on one side of the rotating cavity 202, namely the limiting part 402 is positioned in the accommodating cavity 201, the stopping part 7 is arranged on the other side of the rotating cavity 202, namely the stopping part 7 and the limiting part 5 are respectively positioned on two sides of the pawl 4, the stopping part 7 can prevent the pawl 4 from excessively moving, and the stability of the pawl 4 is improved; preferably, the enlarged part 401 is arranged cylindrically, the outer surface of the cylindrically arranged enlarged part 401 is smooth, the rotating cavity 202 is matched with the enlarged part 401, i.e. the enlarged part 401 is completely embedded into the rotating cavity 202, the inner surface of the rotating cavity 202 is smooth, the arrangement enables the pawl 4 and the shell 2 to rotate smoothly, and the number of parts is reduced through the enlarged part 401 of the pawl 4 and the rotating cavity 202 of the shell 2, so that the wrench is more convenient, simpler and faster to assemble, and the working efficiency is improved; the arrangement can transmit the torque force borne by the wrench to the shell 2 through the ratchet wheel 3 and the pawl 4, so that the wrench can bear larger torque force under the condition of unchanged volume, and the service life of the wrench is prolonged; the bottom of the limiting part 402 is abutted against the limiting part 5, the limiting part 5 is connected with the housing 2, the limiting part 5 can be correspondingly pressed and lifted along with the up-and-down movement of the limiting part 402, so that the pawl tip 403 is abutted against the ratchet of the ratchet 3, and the sealing cover 6 is connected with the housing 2 through a bolt and used for closing the accommodating cavity 201 of the housing 2; during operation, firstly, a wrench head is sleeved on a nut, the position of an application rod 1 is adjusted, a limiting part 5 is abutted to a limiting part 402, a pawl tip 403 is abutted to a ratchet of a ratchet wheel 3, then, pressure is applied to the application rod 1, the pressure applied to the application rod 1 is transmitted to a shell 2 through the ratchet of the ratchet wheel 3 and a pawl 4, the expanded part 401 of the pawl 4 is rotatably connected with a rotating cavity 202 of the shell 2, the contact area between the pawl 4 and the shell 2 is increased, the pawl 4 can bear large torsion and is used for fastening or loosening the nut, finally, the pressure is applied to the application rod 1 in the reverse direction, the application rod 1 drives the ratchet wheel 3 to rotate, when the ratchet wheel 3 rotates, the pawl tip 403 is pushed by the ratchet wheel 3, the pawl tip 403 moves to drive the limiting part 402 to press the limiting part 5, and the ratchet wheel 3 rotates to adjust the position of the application rod 1; the advantage of this embodiment lies in from this, adopts above-mentioned setting, makes the spanner volume unchangeable, can bear great torsion, has prolonged the life of spanner to reduce the quantity of spare part, made the spanner assemble simple, swift, improved work efficiency.

A preferable structure of the limiting member 5 in this embodiment is, as shown in fig. 1, fig. 2, and fig. 4, the limiting member 5 includes a spring 501, an abutting column 502, and a limiting cavity 203, the housing 2 is provided with the limiting cavity 203 through a machine tool, the limiting cavity 203 is arranged along the length direction of the housing 2, the limiting cavity 203 is communicated with the accommodating cavity 201, the limiting cavity 203 is below the limiting portion 402, one end of the spring 501 is fixedly connected to one end of the abutting column 502 through a welding manner, preferably, the diameter of the abutting column 502 is greater than the diameter of the spring 501, this arrangement increases the stability of the abutting column 502 and the spring 501, prolongs the service life of the limiting member 5, the diameter of the abutting column 502 is adapted to the diameter of the limiting cavity 203, and this arrangement increases the stability of the abutting column 502; the end, far away from the abutting column 502, of the spring 501 extends into the limiting cavity 203, the other end of the spring 501 abuts against the bottom of the limiting cavity 203, the abutting column 502 is pressed downwards to compress the spring 501, and the upper end of the abutting column 502 abuts against the limiting part 402, so that the arrangement structure is simple and the practicability is high; the advantage of this embodiment lies in that the adoption is gone up the setting, simple structure, practicality are strong.

The working principle of the embodiment of the utility model is as follows:

during operation, firstly, a wrench head is sleeved on a nut, the position of the force application rod 1 is adjusted, the limiting part 5 is abutted to the limiting part 402, the pawl tip 403 is abutted to the ratchet of the ratchet wheel 3, then, pressure is applied to the force application rod 1, the pressure applied to the force application rod 1 is transmitted to the shell 2 through the ratchet of the ratchet wheel 3 and the pawl 4, the expanded part 401 of the pawl 4 is rotatably connected with the rotating cavity 202 of the shell 2, the contact area between the pawl 4 and the shell 2 is increased, the pawl 4 can bear large torsion and is used for fastening or loosening the nut, finally, pressure is applied to the force application rod 1 in the reverse direction, the force application rod 1 drives the ratchet wheel 3 to rotate, when the ratchet wheel 3 rotates, the pawl tip 403 is pushed by the ratchet wheel 3, the pawl tip 403 moves to drive the limiting part 402 to press the limiting part 5, and the ratchet wheel 3 rotates to adjust the position of the force application rod 1.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the utility model. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims

1. The utility model provides an explosion-proof ratchet spanner of no round pin axle superstrong torsion, includes application of force pole (1), the one end of application of force pole (1) is equipped with wrench end, its characterized in that: the wrench head comprises a shell (2), a ratchet wheel (3), a pawl (4), a limiting piece (5) and a sealing cover (6), the shell (2) is provided with an accommodating cavity (201) and a rotating cavity (202), the accommodating cavity (201) is communicated with the rotating cavity (202), the ratchet wheel (3) is positioned in the accommodating cavity (201), the ratchet wheel (3) is rotationally connected with the shell (2), the pawl (4) comprises an expansion part (401), a limiting part (402) and a pawl tip (403), the expansion part (401) is positioned in the rotating cavity (202), the expansion part (401) is rotatably connected with the shell (2), the pawl tip (403) is abutted against the ratchet of the ratchet wheel (3), the limiting part (402) is abutted against the limiting part (5), the limiting piece (5) is connected with the shell (2), and the sealing cover (6) is connected with the shell (2).

2. The pinless ultrastrong torsion explosion-proof ratchet wrench as claimed in claim 1, characterized in that: the expansion part (401) is arranged in a cylindrical shape, and the outer surface of the expansion part (401) arranged in the cylindrical shape is smooth.

3. The pinless ultrastrong torsion explosion-proof ratchet wrench as claimed in claim 2, characterized in that: the rotating cavity (202) is matched with the expansion part (401), and the inner surface of the rotating cavity (202) is smooth.

4. The pinless ultrastrong torsion explosion-proof ratchet wrench as claimed in claim 1, characterized in that: one end of the rotating cavity (202) is provided with a stopping part (7), and the stopping part (7) and the limiting part (5) are respectively positioned on two sides of the pawl (4).

5. The pinless ultrastrong torsion explosion-proof ratchet wrench as claimed in claim 1, characterized in that: the locating part (5) comprises a spring (501), an abutting column (502) and a limiting cavity (203), the limiting cavity (203) is arranged along the length direction of the shell (2), the limiting cavity (203) is communicated with the accommodating cavity (201), one end of the abutting column (502) is connected with one end of the spring (501), the other end of the spring (501) is abutted to the bottom of the limiting cavity (203), and the other end of the abutting column (502) is abutted to the limiting part (402).

6. The pinless ultrastrong torsion explosion-proof ratchet wrench as claimed in claim 5, characterized in that: the diameter of the abutting column (502) is larger than that of the spring (501), and the diameter of the abutting column (502) is matched with that of the limiting cavity (203).

7. The pinless ultrastrong torsion explosion-proof ratchet wrench as claimed in claim 1, characterized in that: the other end of the force application rod (1) is detachably connected with an auxiliary wrench head (8), and the auxiliary wrench head (8) and the wrench head are different in specification.

8. The pinless ultrastrong torsion explosion-proof ratchet wrench as claimed in claim 7, characterized in that: the auxiliary wrench heads (8) are multiple, and the specifications of the auxiliary wrench heads (8) are different.