CN217669104U

CN217669104U - Auxiliary tool for torque wrench

Info

Publication number: CN217669104U
Application number: CN202221187116.7U
Authority: CN
Inventors: 范旭东; 李江南; 邵清; 刘凯
Original assignee: Weichai Power Co Ltd
Current assignee: Weichai Power Co Ltd
Priority date: 2022-05-17
Filing date: 2022-05-17
Publication date: 2022-10-28
Anticipated expiration: 2032-05-17

Abstract

The utility model discloses a torque wrench appurtenance, include: the wrench comprises an extension rod, an adapter and a wrench head, wherein the adapter is provided with an adapter hole and a first fixing hole, and the first fixing hole is connected with one end of the extension rod; the wrench head is provided with an operation hole and a second fixing hole, and the second fixing hole is connected with the other end of the extension rod; the torque from the operation hole to the extension rod is equal to the torque from the switching hole to the extension rod. According to the utility model discloses a wrench end is used for screwing up bolt or nut, because the extension rod is less in the ascending volume of horizontal direction, so also less to the space requirement, can effectual solution because of the problem of the unable operation of space restriction, the switching hole on the adapter equals the distance and the direction of the overhead handle hole of wrench to the extension rod to the distance and the direction of extension rod, can make torque wrench equal nut or bolt to the moment of extension rod like this, convenient accurate control torque to the moment of extension rod.

Description

Auxiliary tool for torque wrench

Technical Field

The utility model relates to an appurtenance technical field particularly, is a moment spanner appurtenance.

Background

This section provides background information related to the present disclosure only and is not necessarily prior art.

In the equipment assembling process, the situation that the moment cannot be controlled due to space limitation exists, and most of the existing auxiliary tools change the moment arms of the operating end and the stress end, so that the control precision of the moment is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problem of the accuracy of the torque which can not be controlled at least. The purpose is realized by the following technical scheme:

the utility model discloses a first aspect provides a torque wrench appurtenance, include:

an extension pole;

the adapter is provided with an adapter hole and a first fixing hole, and the first fixing hole is connected with one end of the extension rod;

the wrench head is provided with an operation hole and a second fixing hole, and the second fixing hole is connected with the other end of the extension rod;

the moment from the operation hole to the extension rod is equal to the moment from the transfer hole to the extension rod.

According to the utility model discloses a wrench end is used for screwing up bolt or nut, the adapter is used for connecting torque spanner, the wrench end is connected to the one end of extension rod, the adapter is connected to the other end, because the extension rod is less in the ascending volume of horizontal direction, so also less to the space requirement, can effectual solution because of the problem of space restriction unable operation, the switching on the adapter connects the hole to the extension rod apart from and the direction equals the overhead handle hole of wrench to the distance and the direction of extension rod, the moment that can make torque spanner to the extension rod like this equals the moment of nut or bolt to the extension rod, convenient accurate control torque.

Additionally, according to the utility model discloses a moment spanner appurtenance still can have following additional technical characterstic:

in some embodiments of the present invention, the extension rod is a straight rod, and the distance and the direction from the operation hole to the extension rod are equal to the distance and the direction from the transfer hole to the extension rod.

In some embodiments of the present invention, the adapter is a straight adapter, and the shape of the wrench head is consistent with the shape of the adapter.

In some embodiments of the present invention, the adapter is a bent adapter, and the shape of the wrench head is consistent with the shape of the adapter.

In some embodiments of the present invention, the center line of the operation hole coincides with the center line of the transfer hole, and the center line of the first fixing hole coincides with the center line of the first fixing hole.

In some embodiments of the present invention, the operation hole is closed or open.

In some embodiments of the present invention, a boss is disposed at one end of the operation hole.

In some embodiments of the invention, the length of the extension rod is adjustable.

In some embodiments of the present invention, the two ends of the extension rod are provided with fixing heads for matching the first fixing hole and the second fixing hole.

In some embodiments of the present invention, the outer wall of the operation hole is circular.

Drawings

Various additional advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like parts are designated with like reference numerals throughout the drawings. In the drawings:

fig. 1 schematically illustrates a structural view of an adapter of a torque wrench assistance tool according to an embodiment of the present invention when the adapter is an elbow adapter;

fig. 2 schematically illustrates a structural view of the torque wrench auxiliary tool according to an embodiment of the present invention when the adapter is a straight adapter;

figure 3 schematically illustrates an exploded view of an adapter of a torque wrench assistance tool according to an embodiment of the present invention as a straight adapter;

figure 4 schematically illustrates an exploded view of an adapter of a torque wrench assistance tool according to an embodiment of the present invention as an elbow adapter;

fig. 5 schematically shows a perspective view of a wrench head according to an embodiment of the present invention in a closed state;

fig. 6 schematically shows a perspective view of a wrench head according to an embodiment of the present invention in an open type.

The reference numbers are as follows:

10 is an extension rod, 11 is a first fixing head, 12 is a second fixing head, 13 is a first positioning block, and 14 is a second positioning block;

20 is an adapter, 21 is a first fixing hole, and 22 is an adapter hole;

30 is the spanner head, 31 is the second fixed hole, 32 is the operation hole, 33 is the boss.

Detailed Description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

It is to be understood that the terminology used herein is for the purpose of describing particular example embodiments only, and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" may be intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," "includes," "including," and "having" are inclusive and therefore specify the presence of stated features, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and/or groups thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring their performance in the particular order described or illustrated, unless specifically identified as an order of performance. It should also be understood that additional or alternative steps may be used.

Although the terms first, second, third, etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms may be only used to distinguish one element, component, region, layer or section from another region, layer or section. Terms such as "first," "second," and other numerical terms when used herein do not imply a sequence or order unless clearly indicated by the context. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the example embodiments.

For convenience of description, spatially relative terms, such as "inner", "outer", "lower", "below", "upper", "above", and the like, may be used herein to describe one element or feature's relationship to another element or feature as illustrated in the figures. Such spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" or "over" the other elements or features. Thus, the example term "in 8230 \8230; below" may include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

As shown in fig. 1 to 6, according to the utility model discloses an embodiment provides a moment spanner appurtenance, including extension rod 10, wrench head 30 and adapter 20, handle hole 32 and second fixed orifices 31 have been seted up respectively to wrench head 30's both ends, and adapter hole 22 and first fixed orifices 21 have been seted up respectively to adapter 20's both ends, and wrench head 30 passes through second fixed orifices 31 and links to each other with extension rod 10, and adapter 20 passes through first fixed orifices 21 and links to each other with extension rod 10.

In the case that the extension pole 10 is a bent pole, the moment from the operation hole 32 to the extension pole 10 can be made equal to the moment from the switch hole 22 to the extension pole 10 by properly designing the distance and direction between the operation hole 32 and the second fixing hole 31 and the distance and direction between the switch hole 22 and the first fixing hole 21.

Under the condition that the extension rod 10 is a straight rod, the distance and the direction between the operation hole 32 and the second fixing hole 31 are equal to the distance and the direction between the switching hole 22 and the first fixing hole 21, so that the moment from the torque wrench to the extension rod 10 is equal to the moment from a component to be fastened to the extension rod 10, and the moment is conveniently and accurately controlled.

Specifically, as shown in fig. 3 to 4, fixing heads, namely a first fixing head 11 and a second fixing head 12, are respectively disposed at two ends of the extension rod 10, and the fixing heads may be any one of square heads, hexagonal heads, or other rectangular heads. First fixed head 11 on the extension rod 10 can fixed adapter 20 with the cooperation of the first fixed orifices 21 on the adapter 20, prevents that adapter 20 from following circumferential direction, and in the same way, the cooperation of second fixed head 12 and the second fixed orifices 31 on the wrench head 30 can fix wrench head 30, prevents that wrench head 30 from rotating. If the fixed head at the both ends of extension rod 10 is the cylinder structure or does not have the fixed head, can cause in the use of moment spanner appurtenance, spanner head 30 or adapter 20 along extension rod 10 circumferential direction to can't reach the purpose of fastening, consequently, the both ends of extension rod 10 all are provided with the fixed head.

Meanwhile, the fixed head can be detached, and the fixed head can select a proper matching structure according to the wrench head 30 and the adapter 20.

It should be further understood that the first fixing head 11 is provided with a first positioning block 13 along the direction of the center of the extension pole 10 for preventing the adapter 20 from sliding toward the center of the extension pole 10, and the second fixing head 12 is provided with a second positioning block 14 along the direction of the center of the extension pole 10 for preventing the wrench head 30 from sliding toward the center of the extension pole 10.

It should be understood that the extension rod 10 is a straight rod, so that the torque between the torque wrench and the component to be fastened and the extension rod 10 is not changed, and the torque is controlled accurately. If the extension rod 10 is not a straight rod, the torque from the torque wrench to the extension rod 10 is different from the torque from the component to be fastened to the extension rod 10 during use, which is not conducive to torque control by an operator and thus affects assembly quality.

It should be understood that the adapter 20 may be a straight adapter 20 or an elbow adapter 20, and because the external profile of the wrench head 30 is the same as the external profile of the adapter 20, when the adapter 20 is a straight adapter 20, the wrench head 30 is also a straight wrench head 30, and when the adapter 20 is an elbow adapter 20, the wrench head 30 is also an elbow wrench head 30.

One situation is that the straight adapter 20 and the straight wrench head 30 are connected to two ends of the extension rod 10 respectively, and the center line of the adapter hole 22 of the straight adapter 20 coincides with the center line of the operation hole 32 of the wrench head 30 in the horizontal direction, so that the length of the force arm is ensured to be unchanged, and the torque can be controlled more accurately.

In another case, the adapter 20 is a bent adapter 20, the wrench head 30 is a bent wrench head 30, a large arc transition is formed in the middle of the bent wrench head 30, and the bent adapter 20 and the bent wrench head 30 have the same external contour and shape, so that the large arc transition is also formed in the middle of the bent adapter 20. The elbow wrench head 30 is adapted to be shielded from the fastening member in a relatively close proximity so that it can be operated while avoiding the shielding.

It should be further understood that in either case, the center line of the operation hole 32 coincides with the center line of the adapter hole 22. The centre line of the operating hole 32 coincides with the centre line of the transfer hole 22, meaning that the torque of the torque wrench to the extension pole 10 is equal to the torque of the part to be fastened to the extension pole 10, i.e. the direction and magnitude of the torque are the same, which improves the accuracy of the control torque.

It should be understood that the adapter 20 is plate-shaped, and one end of the adapter 20 is provided with a first fixing hole 21, and the other end is provided with a transfer hole 22. The first fixing hole 21 is used for matching with the first fixing head 11 on the extension rod 10, the first fixing head 11 is accommodated in the first fixing hole 21, and the outer side wall of the first fixing head 11 is attached to the inner wall of the first fixing hole 21, so that the axial rotation of the adapter 20 on the extension rod 10 can be further limited, and parts needing to be fastened can be fastened better. The switching hole 22 is designed for the purpose of matching with a torque wrench, one end of the torque wrench is connected with the switching hole 22, the torque wrench is rotated, the switching head 20 drives the extension rod 10 and the wrench head 30 to rotate together, the torque of the switching head 20 is transmitted to a fastened part, and the fastening purpose is achieved.

It should be further understood that, as shown in fig. 5 to 6, the wrench head 30 is also plate-shaped, and has the same external contour, size and the same size as the adapter 20, and one end of the wrench head 30 is provided with a second fixing hole 31, and the other end is provided with an operation hole 32. The second fixing hole 31 is used for matching with the second fixing head 12 on the extension rod 10, the second fixing head 12 is accommodated in the second fixing hole 31, and the outer side wall of the second fixing head 12 is attached to the inner wall of the second fixing hole 31, so that the circumferential rotation of the wrench head 30 on the extension rod 10 can be further limited, and parts needing to be fastened can be fastened better.

Specifically, the operation hole 32 is closed or opened. The closed operating hole 32 is a complete hole, and the component to be fastened can be completely accommodated in the operating hole 32, while the open operating hole 32 lacks a part, and the component to be fastened can be only partially accommodated in the operating hole 32. The open operating hole 32 does not affect the fastening effect, and the open operating hole 32 is designed for the main purpose of solving the problem of limited space, some parts needing fastening are arranged at the position close to the edge, the gap between the parts needing fastening and the equipment is very small, and the closed operating hole 32 cannot be inserted into the parts needing fastening. At this time, the open type operation hole 32 can achieve the fastening effect by connecting the parts to be fastened at the portion.

It is further to be understood that the outer wall of the access hole 32 is rounded in order to save as much space as possible on the basis of the strength.

It is further understood that the operation hole 32 is provided with a boss 33 at one end, and because there is a stepped structure at the pressing surface of the part to be fastened, the height of the boss 33 is the same as that of the stepped structure, so that the part to be fastened for the operation hole 32 can be fastened better.

It is further understood that the access hole 32 may be a quincunx hole, a hexagonal hole, or any rectangular hole. Most of the parts needing to be fastened (such as a bolt and a nut) on the market at present are hexagonal heads, and hexagonal holes with different diameters can be selected according to different parts needing to be improved. The quincuncial holes are more advantageous than hexagonal holes, and when the operation holes 32 are the quincuncial holes, the torque wrench auxiliary tool can meet the tightening requirement by rotating 30 degrees at the minimum, so that the torque wrench auxiliary tool has smaller requirement on the tightening space.

It should also be understood that the length of the extension pole 10 is not fixed, and the length of the extension pole 10 may be adjusted according to different operating conditions. A standard extension pole 10 will generally suffice, but if the shield above the bolt is taller, it can be lengthened further than a standard extension pole 10.

It should be understood that, the torque wrench auxiliary tool of the present embodiment may be used in the engine assembling process, because the turbocharger of the engine is connected to the exhaust pipe and usually screwed by using a stud, a nut or a hexagon flange bolt, the limit of the structure of the turbocharger itself is that the screwing space for the bolt or the nut is very small, and the torque cannot be controlled by using the conventional torque wrench, a socket or a plug-in wrench head 30. Spanner head 30 and adapter 20 are connected through extension rod 10, and the one end fixing bolt or the nut of spanner head 30, the moment spanner is connected to the one end of adapter 20, and the moment spanner is rotated, and adapter 20 drives spanner head 30 and rotates, and the moment of moment spanner can directly transmit for bolt or nut, does not have the influence to arm of force length like this, can accurate control moment. The torque wrench auxiliary tool of the embodiment has small volume in the horizontal direction, has small requirement on space, and can solve the problem that the torque is difficult to control when a supercharger bolt is fastened.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A torque wrench accessory tool, comprising:

an extension pole;

2. The torque wrench auxiliary tool according to claim 1, wherein the extension rod is a straight rod, and the distance and direction from the operation hole to the extension rod are equal to those from the transfer hole to the extension rod.

3. The torque wrench auxiliary tool according to claim 1, wherein the adapter is a straight adapter and the wrench head is shaped to conform to the adapter.

4. The torque wrench aid according to claim 1, wherein the adapter is an elbow adapter, the wrench head having a shape conforming to the shape of the adapter.

5. The torque wrench aid according to claim 1, wherein a centerline of the operation hole coincides with a centerline of the transfer hole, and a centerline of the first fixing hole coincides with a centerline of the first fixing hole.

6. The torque wrench aid tool according to claim 1, wherein the access opening is closed or open.

7. The torque wrench auxiliary tool according to claim 1, wherein one end of the operation hole is provided with a boss.

8. The torque wrench aid as claimed in claim 1, wherein the extension rod is adjustable in length.

9. The torque wrench auxiliary tool according to claim 1, wherein fixing heads are provided at both ends of the extension rod for fixing in cooperation with the first fixing hole and the second fixing hole.

10. The torque wrench auxiliary tool according to claim 1, wherein the outer wall of the operation hole is circular.