CN217046192U - Counter-force arm and torque wrench - Google Patents
Counter-force arm and torque wrench Download PDFInfo
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- CN217046192U CN217046192U CN202220695151.3U CN202220695151U CN217046192U CN 217046192 U CN217046192 U CN 217046192U CN 202220695151 U CN202220695151 U CN 202220695151U CN 217046192 U CN217046192 U CN 217046192U
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Abstract
The utility model discloses a counter-force arm and torque wrench, through setting up roll adjustment elongated slot and connection structure on the counter-force arm body, the first connecting piece includes first linkage segment and second linkage segment, and the fastening connecting piece includes third linkage segment and operation section; the first connecting section extends into the distance-adjusting long groove and can slide in the distance-adjusting long groove, and the third connecting section is in threaded connection with the first connecting section through a through hole in the intermediate piece; the joint piece is detachably sleeved on the second connecting section, and the subsequent operation can be performed after the connecting structure is connected with an external torque wrench; when the adjustment is needed, the fastening connecting piece is only required to be unscrewed, the middle piece is held, namely, the sliding of the joint piece relative to the distance-adjusting long groove can be realized through the side wall of the hyperbolic column, the hyperbolic column is more convenient for an operator to slide, and the fixing can be completed through screwing after the hyperbolic column slides to a specified position. The adjustable distance of piecing pieces relative outside torque wrench of this embodiment, it is many to use the scene, has solved that current reaction arm uses the scene few, is difficult to satisfy the problem of actual demand.
Description
Technical Field
The utility model belongs to the technical field of torque wrench, especially, relate to a counter-force arm and torque wrench.
Background
An electric constant torque wrench is generally used in a place where a bolt (nut) is mounted and dismounted with a large torque ratio and where a torque accuracy requirement is high. The existing electric torque wrench usually controls a torque value according to the working current value change of a motor in the bolt tightening process by an intelligent controller, and when the torque value reaches a preset value, the motor stops working to realize the required torque value. The electric torque wrench mainly comprises a mechanical part consisting of a reduction gearbox, a reaction arm, a sleeve, an internal shaft, a gear and the like, an electromechanical part consisting of a machine body, a handle, a switch, a cable sheath, a driving motor and the like, and an electronic intelligent part consisting of an intelligent controller.
When the electric torque wrench works, the sleeve sleeves a bolt which needs to be loosened or tightened, the reaction force arm is supported on the adjacent bolt, the switch is pressed to drive the motor to rotate, the sleeve rotates clockwise or anticlockwise through the transmission of the mechanical part, and the loosening or tightening of the bolt is realized under the action of the reaction force arm and the supporting point.
When the whole machine leaves a factory, a conventional reaction arm is arranged. However, the reaction arm often has the problems of insufficient length or overlong length, and the application scenes are few, so that the practical application requirements of construction are difficult to meet.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to provide a counter-force arm and torque wrench to it is few to solve current counter-force arm application scene, is difficult to satisfy actual demand's problem.
In order to solve the above problems, the technical scheme of the utility model is that:
the utility model discloses a counter-force arm, include:
the torque wrench comprises a reaction arm body, wherein a distance adjusting long groove is formed in the reaction arm along the length direction, and a connecting structure used for connecting an external torque wrench is arranged at the first end of the reaction arm body;
the first connecting piece is a first connecting section and a second connecting section which are connected with each other, and the first connecting section extends into the distance-adjusting long groove;
the middle piece is a hyperbolic column, and the bottom surface of the middle piece slides on the upper end surface of the counterforce arm body and corresponds to the distance-adjusting long groove; a concave groove is formed in the top surface of the intermediate piece, and a through hole communicated with the lower distance-adjusting long groove is formed in the bottom surface of the concave groove;
the fastening connecting piece is respectively a third connecting section and an operating section which are connected, the third connecting section penetrates through the through hole and is in threaded connection with the first connecting section, and the bottom surface of the operating section is used for abutting against the bottom surface of the concave groove;
and the connecting end of the joint piece is detachably connected to the second connecting section and is used for sleeving or embedding the corresponding external adjacent connecting unit.
The utility model discloses a counter-force arm, be equipped with a butt section between first linkage segment and the second linkage segment for the butt extremely the lower terminal surface of counter-force arm body.
The utility model discloses a counter-force arm, be equipped with a connecting hole on the first linkage segment, be equipped with the internal thread in the connecting hole, be equipped with corresponding external screw thread on the third linkage segment.
The utility model discloses a reaction arm, fastening connection spare is fastening screw, first linkage segment does fastening screw's screw thread section, the operation section does fastening screw's spiral shell head.
The utility model discloses a counter-force arm, connection structure is for locating the collar of the first end of counter-force arm body, be equipped with the splined hole that is used for installing to outside torque wrench on the internal face of collar.
The utility model discloses a counter-force arm, first linkage segment is cylindrical linkage segment, the roll adjustment elongated slot is waist hole shape elongated slot.
The utility model discloses a counter-force arm, the joint spare is sleeve or interior hexagonal joint.
The counter-force arm of the utility model also comprises a safety pin; and the joint piece and the second connecting section are respectively provided with a first pin hole and a second pin hole for inserting a safety pin.
The utility model discloses a counter-force arm, the joint spare is located first pinhole department is equipped with an annular groove, the gomphosis has rubber safety ring in the annular groove.
The utility model discloses a torque wrench, including above-mentioned arbitrary item the reaction arm of force.
The utility model discloses owing to adopt above technical scheme, make it compare with prior art and have following advantage and positive effect:
in an embodiment of the present invention, the distance-adjusting long groove and the connection structure are provided on the reaction arm body, the first connection section of the first connection member extends into the distance-adjusting long groove and can slide therein, and the third connection section of the fastening connection member is screwed with the first connection section through the through hole in the intermediate member; after connection, the second connecting section of the first connecting piece and the lower end face of the middle piece are respectively abutted against two sides of the reaction arm body, and the operating section of the fastening connecting piece is tightly pressed on the bottom face of the concave groove of the middle piece; the joint piece is detachably sleeved on the second connecting section, so that the relative position of the joint piece and the reaction arm body is fixed, and the subsequent operation can be performed after the connecting structure is connected with an external torque wrench; when the relative position of the joint piece and the counter-force arm body needs to be adjusted, the fastening connecting piece only needs to be unscrewed, the middle piece is held, namely the sliding of the joint piece relative to the distance-adjusting long groove can be realized through the side wall of the hyperbolic cylinder, the sliding of an operator is facilitated due to the shape of the hyperbolic cylinder, and the fixing can be completed through screwing after the joint piece slides to a specified position. The adjustable distance of piecing pieces relative outside torque wrench of this embodiment, it is many to use the scene, has solved that current reaction arm uses the scene few, is difficult to satisfy the problem of actual demand.
Drawings
FIG. 1 is an exploded view of a reaction arm according to the present invention;
FIG. 2 is another exploded view of the reaction arm of the present invention;
fig. 3 is a schematic view of a reaction arm of the present invention;
fig. 4 is a cross-sectional view of the reaction arm of the present invention;
fig. 5 is a schematic view of the application of the reaction arm of the present invention.
Description of the reference numerals: 1: a reaction arm body; 101: adjusting the distance of the long groove; 102: a mounting ring; 2: a middleware; 3: a first connecting member; 301: a second connection section; 302: a first connection section; 303: an abutment section; 304: a second pin hole; 4: fastening a connecting piece; 401: a third connection section; 402: an operation section; 5: a socket piece; 501: a first pin hole; 6: a safety pin; 7: a rubber safety ring.
Detailed Description
The reaction arm and the torque wrench according to the present invention will be described in detail with reference to the accompanying drawings and specific embodiments. The advantages and features of the present invention will become more fully apparent from the following description and appended claims.
Example one
Referring to fig. 1 to 5, in one embodiment, a reaction arm includes a reaction arm body 1, a first connector 3, an intermediate member 2, a fastening connector 4, and a connector member 5.
The reaction arm body 1 is provided with a distance-adjusting elongated slot 101 along the length direction, and the first end of the reaction arm body 1 is provided with a connecting structure for connecting an external torque wrench.
The first connecting piece 3 is a first connecting section 302 and a second connecting section 301 which are connected, and the first connecting section 302 extends into the distance-adjusting long groove 101. The intermediate member 2 may be a hyperbolic cylinder, and the bottom surface of the intermediate member 2 slides on the upper end surface of the reaction arm body 1 and corresponds to the distance adjustment groove 101. The top surface of the intermediate member 2 is provided with a concave groove, and the bottom surface of the concave groove is provided with a through hole communicated with the lower distance-adjusting long groove 101.
The fastening connection member 4 is a third connection section 401 and an operation section 402 which are connected with each other, the third connection section 401 is arranged in the through hole in a penetrating manner and is connected with the first connection section 302 in a threaded manner, and the bottom surface of the operation section 402 is used for being abutted to the bottom surface of the concave groove.
The connection end of the socket 5 is detachably connected to the second connection segment 301 for nesting or embedding a corresponding externally adjoining connection unit. The detachable connection arrangement allows the joint 5 to be replaced according to the size of the externally adjoining bolt, further increasing the application scenarios. In this embodiment, the distance-adjusting long groove 101 and the connecting structure are arranged on the reaction arm body 1, the first connecting section 302 of the first connecting member 3 extends into the distance-adjusting long groove 101 and can slide therein, and the third connecting section 401 of the fastening connecting member 4 is in threaded connection with the first connecting section 302 through the through hole in the intermediate member 2. After the connection, the second connection section 301 of the first connection member 3 and the lower end surface of the intermediate member 2 respectively abut against the two sides of the reaction arm body 1, and the operation section 402 of the fastening connection member 4 is pressed against the bottom surface of the concave groove of the intermediate member 2. The joint piece 5 is detachably sleeved on the second connecting section 301, so that the relative position of the joint piece 5 and the reaction arm body 1 is fixed, and the connecting structure can be subsequently operated after being connected with an external torque wrench. When the relative position of the joint piece 5 and the reaction arm body 1 needs to be adjusted, the fastening connecting piece 4 only needs to be unscrewed, the middle piece 2 is held, namely the side wall of the hyperbolic cylinder can realize the sliding of the joint piece 5 relative to the distance-adjusting long groove 101, the hyperbolic cylinder is more convenient for an operator to slide, and the joint piece can be fixed by screwing after sliding to a specified position. The adjustable distance of the connector 5 relative to the external torque wrench is adjustable, application scenes are many, and the problems that the existing reaction arm is few in application scenes and difficult to meet actual requirements are solved.
The following further describes the specific structure of the reaction arm of this embodiment:
in this embodiment, be equipped with a butt section 303 between first linkage segment 302 and the second linkage segment 301 for butt to the lower terminal surface of reaction arm body 1, thereby make the first connecting piece 3 butt not receive the restriction of second linkage segment 301 size to the area of reaction arm body 1, can set up the size of butt section 303 into the lower terminal surface phase-match with the reaction arm, thereby guarantee that sufficient area produces sufficient frictional force when the butt.
Furthermore, the bottom surface of the intermediate piece 2 can also be dimensioned to match the upper end surface of the reaction arm, also in order to have a sufficient area to generate sufficient friction force and to achieve fastening relative to the reaction arm body 1.
In this embodiment, a connection hole is formed in the first connection section 302, an internal thread is formed in the connection hole, and a corresponding external thread is formed on the third connection section 401.
Specifically, the fastening connector 4 is a fastening screw, the first connecting section 302 is a threaded section of the fastening screw, and the operating section 402 is a screw head of the fastening screw, and the threaded connection with the first connecting section 302 can be realized by screwing the fastening screw, and the screw head can be pressed on the bottom surface of the concave groove to press the intermediate member 2 on the reaction arm body 1.
In this embodiment, the connecting structure on the reaction arm body 1 may be specifically a mounting ring 102 disposed at the first end of the reaction arm body 1, and the inner wall surface of the mounting ring 102 is provided with a spline hole for mounting to an external torque wrench.
In this embodiment, the first connecting section 302 is a cylindrical connecting section, and the distance-adjusting slot 101 is a kidney-shaped slot. The diameter of the first connecting section 302 and the width of the long distance adjusting groove 101 can be set to be in clearance fit, that is, the diameter of the first connecting section 302 is smaller than the width of the long distance adjusting groove 101, so that the sliding between the two is facilitated.
Further, the abutment section 303 may be provided in the form of a circular disk, and the diameter may be specifically adapted to the size of the bottom surface of the reaction arm body. The diameter of the bottom surface of the intermediate piece 2 can also be arranged to correspond to the size of the top surface of the reaction arm body.
In this embodiment, the length of the distance-adjusting slot 101 may be 86-210 mm, and the distance from the center point of the spline hole to the proximal end of the distance-adjusting slot 101 may be 57-170 mm.
In this embodiment the counter force arm may also comprise a safety pin 6. The socket 5 and the second connection section 301 are respectively provided with a first pin hole 501 and a second pin hole 304 for inserting the safety pin 6. After the socket 5 is mounted to the second connection section 301, the safety pin 6 may be inserted into the first pin hole 501 and the second pin hole 304, so as to fix the relative position between the socket 5 and the second connection section 301, and prevent the socket 5 from falling off under the action of external force.
Furthermore, the joint piece 5 is provided with an annular groove at the first pin hole 501, and a rubber safety ring 7 is embedded in the annular groove, so that the safety pin 6 can be limited by the rubber safety ring 7 after being inserted into the two corresponding pin holes, and the condition that the joint piece 5 falls off due to the fact that the safety pin 6 is separated from the external torque wrench during working can be effectively avoided.
In the present embodiment, the joint 5 may be a socket or an inner hexagonal joint, and may also be other corresponding connection joints, which are not limited herein. Through setting up joints such as sleeve, hexagon socket joint into with the second linkage segment 301 can dismantle the connection to carry out the fixed of relative position through the safety pin, thereby further improved the application scene of the reaction arm of this embodiment, adaptable in various forms's bolt etc..
In many application scenarios, a countersunk head bolt is arranged beside a bolt to be screwed, and referring to fig. 5, a common counterforce arm does not have a point capable of being abutted, so that the function of the counterforce arm cannot be realized; in the reaction arm of this embodiment, the connector 5 is selected as an inner hexagonal connector or other structures, and is inserted into the countersunk bolt, and the first pin hole 501 on the connector and the second pin hole 304 on the second connection section 301 are combined to complete mutual position fixing, so that the function of the reaction arm can be realized.
Example two
The present embodiment provides a torque wrench, which includes the reaction arm in the first embodiment. By arranging the distance-adjusting elongated slot 101 and the connecting structure on the reaction arm body 1, the first connecting section 302 of the first connecting member 3 extends into the distance-adjusting elongated slot 101 and can slide therein, and the third connecting section 401 of the fastening connecting member 4 is in threaded connection with the first connecting section 302 through the through hole in the intermediate member 2. After the connection, the second connection section 301 of the first connection member 3 and the lower end surface of the intermediate member 2 respectively abut against the two sides of the reaction arm body 1, and the operation section 402 of the fastening connection member 4 is pressed against the bottom surface of the concave groove of the intermediate member 2. The joint piece 5 is detachably sleeved on the second connecting section 301, so that the relative position of the joint piece 5 and the reaction arm body 1 is fixed, and the connecting structure can be subsequently operated after being connected with an external torque wrench. When the relative position of the joint piece 5 and the reaction arm body 1 needs to be adjusted, the fastening connecting piece 4 only needs to be unscrewed, the middle piece 2 is held, namely the side wall of the hyperbolic cylinder can realize the sliding of the joint piece 5 relative to the distance-adjusting long groove 101, the hyperbolic cylinder is more convenient for an operator to slide, and the joint piece can be fixed by screwing after sliding to a specified position. The adjustable joint 5 of this embodiment is far or near relative outside torque wrench, and the application scene is many, has solved current reaction arm and has used the scene few, is difficult to satisfy actual demand's problem.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the embodiments. Even if various changes are made to the present invention, the changes are still within the scope of the present invention if they fall within the scope of the claims and their equivalents.
Claims (10)
1. A reaction arm, comprising:
the torque-adjustable torque wrench comprises a reaction arm body, wherein a distance-adjustable long groove is formed in the reaction arm along the length direction, and a connecting structure for connecting an external torque wrench is arranged at the first end of the reaction arm body;
the first connecting piece is a first connecting section and a second connecting section which are connected with each other, and the first connecting section extends into the distance-adjusting long groove;
the middle piece is a hyperbolic column, and the bottom surface of the middle piece slides on the upper end surface of the counterforce arm body and corresponds to the distance-adjusting long groove; a concave groove is formed in the top surface of the intermediate piece, and a through hole communicated with the lower distance-adjusting long groove is formed in the bottom surface of the concave groove;
the fastening connecting piece is respectively a third connecting section and an operating section which are connected, the third connecting section penetrates through the through hole and is in threaded connection with the first connecting section, and the bottom surface of the operating section is used for abutting against the bottom surface of the concave groove;
and the connecting end of the joint piece is detachably connected to the second connecting section and is used for sleeving or embedding the corresponding external adjacent connecting unit.
2. The reaction arm of claim 1 wherein an abutment section is provided between the first and second connection sections for abutment against the lower end surface of the reaction arm body.
3. The reaction arm as in claim 1 wherein the first connecting section has a connecting hole with an internal thread and the third connecting section has a corresponding external thread.
4. The reaction arm of claim 3 wherein the fastening connection is a fastening screw, the first connection section is a threaded section of the fastening screw, and the operating section is a head of the fastening screw.
5. The reaction arm of claim 1 wherein the attachment structure is a mounting ring disposed at the first end of the reaction arm body, the mounting ring having a splined opening in an inner wall for attachment to an external torque wrench.
6. The reaction arm of claim 1 wherein the first connecting section is a cylindrical connecting section and the adjustable length slot is a kidney-shaped slot.
7. The reaction arm of claim 1 wherein the adapter member is a socket or a socket head.
8. The reaction arm of claim 1 further including a fuse pin; and the joint piece and the second connecting section are respectively provided with a first pin hole and a second pin hole for inserting a safety pin.
9. The reaction arm of claim 8 wherein said adapter member defines an annular recess at said first pin opening, said annular recess having a rubber retaining ring disposed therein.
10. A torque wrench comprising a reaction arm according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220695151.3U CN217046192U (en) | 2022-03-29 | 2022-03-29 | Counter-force arm and torque wrench |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220695151.3U CN217046192U (en) | 2022-03-29 | 2022-03-29 | Counter-force arm and torque wrench |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217046192U true CN217046192U (en) | 2022-07-26 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220695151.3U Active CN217046192U (en) | 2022-03-29 | 2022-03-29 | Counter-force arm and torque wrench |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217046192U (en) |
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2022
- 2022-03-29 CN CN202220695151.3U patent/CN217046192U/en active Active
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