Double-pin manual torque wrenchTechnical field:
The invention relates to a double-pin manual torque wrench.
The background technology is as follows:
The dust ring in the ball nut structure needs to be pre-tightened after assembly, and is plugged into a stress groove on the end face of the dust ring through a straight line, when the ball nut is used, the straight line is limited by an operation space, multiple operations are needed, the pre-tightening purpose cannot be achieved completely, and the dust ring is scraped.
The invention comprises the following steps:
The invention aims to solve the problems in the prior art and provides a double-pin manual torque wrench.
The invention adopts the technical scheme that: the double-pin manual torque wrench comprises a wrench body, a connector and a double-pin wrench head, wherein the connector is fixedly connected to the wrench body; the double-pin spanner comprises a movable head, a fixed head, an adjusting screw and a working pin, wherein the fixed head is fixedly connected to the connecting head, the movable head is hinged to the fixed head through a bolt, the movable head rotates around a hinge point, the adjusting screw is in threaded connection with the movable head, one end of the adjusting screw is abutted to the fixed head, the two working pins are respectively fixedly connected to the tail ends of the movable head and the fixed head, the axial direction of the working pin is perpendicular to the axial direction of the spanner body, and the working pin on the fixed head is positioned on the working pin on the movable head around a rotating path of the hinge point.
Further, the fixed head comprises a first arc part and a connecting rod part which are integrally formed, the connecting rod part is fixedly connected to the connecting head, the working pin is fixedly connected to the tail end of the first arc part, and the axial direction of the working pin is parallel to the axial direction of the first arc part.
Further, a hinge hole is formed at the joint of the first arc part and the connecting rod part.
Further, the movable head comprises a second arc part and a hinge seat which are integrally formed, the second arc part and the first arc part are identical in shape and size, a mounting groove hole is formed in the hinge seat, the connecting rod part is inserted into the mounting groove hole, and the hinge seat is hinged with the hinge hole through a bolt; the adjusting screw is in threaded connection on the terminal surface of articulated seat, and adjusting screw is contradicted on the outer arc face of first circular arc portion.
Further, the working pin is of a step pin structure with a large cylindrical part and a small cylindrical part, the tail ends of the movable head and the fixed head are respectively provided with a step hole, the working pin is correspondingly welded in the step holes, and the large cylindrical part and the small cylindrical part in the working pin are respectively arranged on two corresponding side surfaces of the movable head or the fixed head.
Further, a handle sleeve is sleeved on the wrench body.
The invention has the following beneficial effects:
1) The two working pins are correspondingly clamped into the stress grooves on the end face of the dust ring, the two working pins form a limit, and when the dust ring is pre-tightened, the wrench body is rotated, so that the wrench is convenient to use and operate.
2) The large cylinder part and the small cylinder on the working pin can be correspondingly applicable to the dustproof rings of the stress grooves in two different size intervals, and the applicability is wide.
Description of the drawings:
Fig. 1 is a structural diagram of the present invention.
Fig. 2 is a structural diagram of the present invention.
FIG. 3 is a block diagram of a double pin wrench in accordance with the present invention.
FIG. 4 is a block diagram of a double pin wrench in accordance with the present invention.
The specific embodiment is as follows:
the invention is further described below with reference to the accompanying drawings.
As shown in fig. 1 to 4, the double-pin manual torque wrench of the present invention comprises a wrench body 1, a connector 2 and a double-pin wrench head 3, wherein the connector 2 is fixedly connected to the wrench body 1, and the double-pin wrench head 3 is fixedly connected to the connector 2.
The double-pin spanner 3 comprises a movable head 31, a fixed head 32, an adjusting screw 33 and working pins 34, wherein the fixed head 32 is fixedly connected to a connector 2, the movable head 31 is hinged to the fixed head 32 through a bolt, the movable head 31 can rotate around a hinged point, the adjusting screw 33 is in threaded connection with the movable head 31, one end of the adjusting screw 33 is abutted against the fixed head 32, the two working pins 34 are respectively fixedly connected to the tail ends of the movable head 31 and the fixed head 32, and the axial direction of the working pins 34 is perpendicular to the axial direction of the spanner body 1. The operating pin 34 on the fixed head 32 is in the rotational path of the operating pin 34 on the movable head 31 about the hinge point.
The fixing head 32 includes a first arc portion 321 and a connecting rod portion 322 that are integrally formed, the connecting rod portion 322 is fixedly connected (welded or bolted) to the connecting head 2, the working pin 34 is fixedly connected to the end of the first arc portion 321, and the axial direction of the working pin 34 is parallel to the axial direction of the first arc portion 321.
A hinge hole 323 is provided at a junction of the first arc portion 321 and the link portion 322.
The movable head 31 comprises a second arc part 311 and a hinge seat 312 which are integrally formed, the second arc part 311 and the first arc part 321 have the same shape and size, the hinge seat 312 is provided with a mounting groove hole 313, the mounting groove hole 313 is arranged towards the axis direction of the wrench body 1, a connecting rod part 322 in the fixed head 32 is inserted into the mounting groove hole 313, and the hinge seat 312 is correspondingly hinged with the hinge hole 323 through a bolt.
The adjusting screw 33 is in threaded connection with the end face of the hinge seat 312, and the adjusting screw 33 abuts against the outer arc face of the first arc portion 321. In use, the position of the adjustment screw 33 is adjusted to limit the maximum degree of freedom in the outward rotation of the movable head 31. The degree of freedom of inward rotation of the movable head 31 does not need to be limited.
The working pin 34 in the invention is of a step pin structure with a large cylindrical part and a small cylindrical part, the tail ends of the movable head 31 and the fixed head 32 are respectively provided with a step hole, the working pin 34 is correspondingly welded in the step holes, the step surface of the working pin 34 is matched with the step surface of the step hole, and the large cylindrical part and the small cylindrical part in the working pin 34 are respectively arranged on two corresponding side surfaces of the movable head 31 or the fixed head 32.
The large cylindrical portion and the small cylindrical portion of the operating pin 34 may correspond to dust rings suitable for use in two different sized section stress slots.
The wrench body 1 is sleeved with the handle sleeve 11, and the handle sleeve 11 is made of rubber materials, so that friction force between the wrench body and the hand can be increased.
When in use, according to the size of the dust ring, the position of the adjusting screw 33 is adjusted, the adjusting screw 33 is used for limiting the maximum degree of freedom of the outward rotation of the movable head 31, and the dust ring can be clamped in the using process conveniently. The inward rotation freedom degree of the movable head 31 is not limited, when the wrench is used, the two working pins 34 are correspondingly clamped into the stress grooves on the end face of the dust ring, the two working pins 34 form a limit, and when the dust ring is pre-tightened, the wrench body 1 is rotated, so that the wrench is convenient to use and operate. The large cylindrical part and the small cylindrical part on the working pin 34 can be correspondingly applicable to the dustproof rings of the stress grooves in two different size intervals, and the applicability is wide.
The foregoing is merely a preferred embodiment of the invention, and it should be noted that modifications could be made by those skilled in the art without departing from the principles of the invention, which modifications would also be considered to be within the scope of the invention.