CN211474859U

CN211474859U - Reversing gear shifting fork

Info

Publication number: CN211474859U
Application number: CN201921526939.6U
Authority: CN
Inventors: 崔建业
Original assignee: NINGBO TIANYE PRECISION CASTING CO Ltd
Current assignee: NINGBO TIANYE PRECISION CASTING CO Ltd
Priority date: 2019-09-12
Filing date: 2019-09-12
Publication date: 2020-09-11
Anticipated expiration: 2029-09-12

Abstract

The utility model relates to the technical field of gearbox manufacturing, in particular to a reversing gear shifting fork, which comprises a shifting fork rod and a shifting fork body, wherein the shifting fork rod is detachably connected to the shifting fork body, a cavity is arranged in the shifting fork rod, two clamping jaws are arranged in the cavity, a first spring is connected between the two clamping jaws, each clamping jaw comprises a vertical part and a clamping part, the vertical part of each clamping jaw is fixedly connected with a pressing rod, and one part of each pressing rod extends out of the side wall of the shifting fork rod; the pressing rod is also provided with an inner groove, a resisting plate is fixedly arranged in the cavity, and a bulge matched with the inner groove is arranged on the resisting plate; the shifting fork body is internally provided with a limiting groove for limiting the movement of the two clamping jaws. The pressing rod is pushed in two directions, so that the clamping part of the clamping jaw enters the limiting groove, the clamping part of the clamping jaw is clamped with the limiting groove, the effect of connecting the shifting fork body and the shifting fork rod is also achieved, the shifting fork body and the shifting fork rod are connected together, and the technical problem that the shifting fork is inconvenient to detach in the prior art is solved.

Description

Reversing gear shifting fork

Technical Field

The utility model relates to a technical field is made to the gearbox, specifically is a switching-over fender shift fork.

Background

At present, when an operating handle is pushed by a key part of a shifting fork in a reversing gear, the shifting fork connected with one end of the operating handle pushes a sliding gear in a gearbox to move axially, and after an engagement system of an original gear pair is disengaged, the shifting fork is engaged with another gear to establish a new gear pair engagement relation, so that a required transmission ratio is obtained, gear shifting of different gears is realized, and engagement or disengagement of the sliding gear and a clutch gear can also be realized.

And to current shift fork, the shift fork is whole to be changed and is maintained after long-term use wearing and tearing or misuse damage, and the shift fork does not have the dismantlement function, leads to the user to increase use cost when changing wearing and tearing or damage the shift fork.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a main aim at provides a switching-over keeps off shift fork has convenient to detach's advantage, has solved the technical problem that the shift fork is not convenient for dismantle among the prior art.

In order to achieve the above purpose, the utility model adopts the technical scheme that: a reversing gear shifting fork comprises a shifting fork rod and a shifting fork body, wherein the shifting fork rod is detachably connected to the shifting fork body, a cavity is formed in the shifting fork rod, two clamping jaws are arranged in the cavity, a first spring is connected between the two clamping jaws, each clamping jaw comprises a vertical part and a clamping part, a pressing rod is fixedly connected to the vertical part of each clamping jaw, and part of the pressing rod extends out of the side wall of the shifting fork rod; the pressing rod is also provided with an inner groove, a butting plate is fixedly arranged in the cavity, and a bulge matched with the inner groove is arranged on the butting plate; the shifting fork body is internally provided with a limiting groove for limiting the movement of the two clamping jaws.

Further preferably, a protective sleeve is sleeved outside one end, far away from the clamping jaw, of the pressing rod. The push rod is prevented from sliding relatively when the shifting fork rod and the shifting fork body are not connected together.

Further optimize, the radial inboard of both ends tip of shift fork body all is equipped with the recess, be equipped with wear-resisting piece in the recess, be connected with the second spring between wear-resisting piece and the recess inner wall. The wear-resisting piece can prolong the service life of the shifting fork body.

Further preferably, the cross section of the protrusion is in the shape of a right-angled triangle, and the side of the right-angled triangle close to one side of the clamping jaw is a right-angled side. After the pressing rod is fixed on the abutting plate, the pressing rod cannot be separated from the abutting plate in a mode of directly moving outwards, and temporary fixing is facilitated.

Further preferably, when the shifting fork rod and the shifting fork body are connected together, one end of the abutting plate abuts against the vertical part of the clamping jaw.

Further optimize, be equipped with the shaft hole on the shifting fork pole, still be equipped with the protective sheath in the shaft hole, the embedded steel ball that is equipped with of protective sheath, the steel ball distributes along the circumference and sets up. The steel ball is arranged to enable the shifting fork to rotate more smoothly.

Further preferably, the cross section of the inner groove is a right trapezoid, the cross section of the protrusion is also a right trapezoid, the area of the right trapezoid where the inner groove is located is larger than that of the right trapezoid where the protrusion is located, and the protrusion can slide relative to the inner groove.

The principle of the utility model lies in: when the shifting fork rod and the shifting fork body are not connected together, the clamping part of the clamping jaw does not extend into the limiting groove in the shifting fork body, so that the shifting fork rod and the shifting fork body can move relatively, namely can be detached and separated, and at the moment, one end of the pressing rod is provided with a protective sleeve to prevent the pressing rod from sliding relatively;

when the shifting fork rod and the shifting rod body need to be connected together, the protective sleeve is removed, a user pushes the two pressing rods to move towards the direction of the clamping jaws, the first spring between the two clamping jaws is compressed, meanwhile, the distance between the two clamping jaws is reduced, so that the length of the bottom of the clamping part of the clamping jaws is smaller than that of the upper part of the limiting groove, at the moment, the user pushes the two pressing rods to move towards the shifting fork body again, the clamping parts of the two clamping jaws enter the limiting groove, meanwhile, the inner grooves in the pressing rods are matched with the protrusions in the abutting plate, and the pressing rods cannot continue to move towards the shifting fork body; at the moment, a user releases the hand, the first spring between the two clamping jaws releases the elastic force to extend, so that the distance between the two clamping jaws is increased until the clamping parts of the clamping jaws are attached to the inner side wall of the limiting groove, the clamping jaws are clamped in the limiting groove, meanwhile, the pressing rod can transversely slide on the abutting plate, and finally, the inner groove is matched with the bulge on the abutting plate to fix the pressing rod; therefore, the shifting fork rod is connected with the shifting rod body, and subsequent use is facilitated.

The utility model has the advantages that: 1. according to the clamping device, the pressing rod is pushed in two directions, so that the clamping jaw fixedly connected with the pressing rod enters the limiting groove, the clamping jaw enters the limiting groove, on one hand, the clamping part of the clamping jaw is clamped with the limiting groove, on the other hand, the effect of connecting the shifting fork body and the shifting fork rod is also achieved, the shifting fork body and the shifting fork rod are connected together, and the technical problem that the shifting fork is inconvenient to detach in the prior art is solved. 2. The inner groove on the pressing rod is matched with the protrusion on the abutting plate, the inner groove and the cross section of the protrusion are arranged in a right trapezoid mode, the pressing rod is fixed on the abutting plate, the pressing rod cannot continue to move towards the shifting fork body, and the protrusion is matched with the inner groove to fix the pressing rod.

Drawings

Fig. 1 is a schematic structural view of the reversing gear shifting fork of the present invention, wherein the shifting fork rod is not connected with the shifting fork body.

Fig. 2 is a schematic structural view of the fork rod and the fork body of the present invention.

Reference numerals: the device comprises a shifting fork rod 1, a shifting fork body 2, a clamping jaw 3, a vertical part 31, a clamping part 32, a first spring 4, a pressing rod 5, an inner groove 51, a resisting plate 6, a protrusion 7, a limiting groove 8, a protecting sleeve 9, a groove 10, a wear-resisting block 11, a second spring 12, a shaft hole 13, a protecting sleeve 14 and a steel ball 15.

Detailed Description

The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art.

Embodiment 1 of the present invention is shown in fig. 1-2: a reversing gear shifting fork comprises a shifting fork rod 1 and a shifting fork body 2, wherein the shifting fork rod 1 is detachably connected to the shifting fork body 2, a cavity is formed in the shifting fork rod 1, two clamping jaws 3 are arranged in the cavity, a first spring 4 is connected between the two clamping jaws 3, each clamping jaw 3 comprises a vertical part 31 and a clamping part 32, the vertical part 31 of each clamping jaw 3 is fixedly connected with a pressing rod 5, and one part of each pressing rod 5 extends out of the side wall of the shifting fork rod 1; the pressing rod 5 is also provided with an inner groove 51, a resisting plate 6 is fixedly arranged in the cavity, and the resisting plate 6 is provided with a bulge 7 matched with the inner groove 51; and a limiting groove 8 for limiting the movement of the two clamping jaws 3 is arranged in the shifting fork body 2.

And a protective sleeve 9 is sleeved outside one end of the pressing rod 5 far away from the clamping jaw 3.

The radial inner sides of the end parts of the two ends of the shifting fork body 2 are respectively provided with a groove 10, a wear-resistant block 11 is arranged in each groove 10, and a second spring 12 is connected between each wear-resistant block 11 and the inner wall of each groove 10.

The cross-sectional shape of the protrusion 7 is a right-angled triangle, and the side of the right-angled triangle close to one side of the clamping jaw 3 is a right-angled side.

When the shifting fork rod 1 is connected with the shifting fork body 2, one end of the abutting plate 6 abuts against the vertical part 31 of the clamping jaw 3.

The shifting fork rod 1 is provided with a shaft hole 13, a protective sleeve 14 is further arranged in the shaft hole 13, steel balls 15 are embedded in the protective sleeve 14, and the steel balls 15 are distributed along the circumference. The steel ball 15 enables the shifting fork to be shifted more smoothly.

The cross section of the inner groove 51 is a right trapezoid, the cross section of the protrusion 7 is also a right trapezoid, the area of the right trapezoid where the inner groove 51 is located is larger than the area of the right trapezoid where the protrusion 7 is located, and the protrusion 7 can slide relative to the inner groove 51.

The utility model discloses a concrete operating procedure as follows: when the shifting fork rod 1 and the shifting fork body 2 are not connected together, the clamping parts 32 of the clamping jaws 3 do not extend into the limiting groove 8 in the shifting fork body 2, the distance between the farthest ends of the bottoms of the clamping parts 32 of the two clamping jaws 3 is longer than the length of the upper part of the limiting groove 8, so that the shifting fork rod 1 and the shifting fork body 2 can move relatively, namely can be detached and separated, and at the moment, one end of the pressing rod 5 is provided with a protecting sleeve 9 to prevent the pressing rod 5 from sliding relatively;

when the shifting fork rod 1 and the shifting lever body need to be connected together, the protecting sleeve 9 is removed, a user pushes the two pressing rods 5 to move towards the direction of the clamping jaws 3, the first spring 4 between the two clamping jaws 3 is compressed, and meanwhile, the distance between the two clamping jaws 3 is reduced, so that the distance between the farthest ends of the bottoms of the clamping parts 32 of the two clamping jaws 3 is smaller than the length of the upper part of the limiting groove 8, at the moment, the user pushes the two pressing rods 5 to move towards the shifting fork body 2 again, so that the clamping parts 32 of the two clamping jaws 3 enter the limiting groove 8, meanwhile, the inner grooves 51 on the pressing rods 5 are matched with the protrusions 7 on the resisting plates 6, and the pressing rods 5 cannot continue to move towards the shifting fork body 2; at this moment, a user releases a hand, the first spring 4 between the two clamping jaws 3 releases elastic force and extends, so that the distance between the two clamping jaws 3 is increased, until the clamping part 32 of the clamping jaw 3 is attached to the inner side wall of the limiting groove 8, the clamping jaw 3 is clamped in the limiting groove 8, meanwhile, the pressing rod 5 can slide transversely on the abutting plate 6, finally, the inner groove 51 is matched with the protrusion 7 on the abutting plate 6, the pressing rod 5 is fixed, and therefore the shifting fork rod 1 is connected with the shifting lever 2, and subsequent use is facilitated.

When the shifting fork rod 1 and the shifting fork body 2 are not connected together, a user only can push the two pressing rods 5 to move towards the direction of the clamping jaws 3, the first spring 4 between the two clamping jaws 3 is compressed, when the clamping part 32 of the clamping jaw 3 is not attached to the inner side wall of the limiting groove 8, the clamping part 32 of the clamping jaw 3 can move upwards to be separated from the limiting groove 8, and finally the user releases the pressing rods 5, and the clamping jaws 3 reset under the action of the first spring 4.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the principles of the present invention may be applied to any other embodiment without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A reversing gear shifting fork comprises a shifting fork rod and a shifting fork body, wherein the shifting fork rod is detachably connected to the shifting fork body; the pressing rod is also provided with an inner groove, a butting plate is fixedly arranged in the cavity, and a bulge matched with the inner groove is arranged on the butting plate; the shifting fork body is internally provided with a limiting groove for limiting the movement of the two clamping jaws.

2. The reverse shift fork according to claim 1, wherein a protective sleeve is sleeved over an end of the push rod remote from the pawl.

3. The reversing gear shifting fork according to claim 1, wherein a groove is formed in the radial inner side of each end of the fork body, a wear-resistant block is arranged in the groove, and a second spring is connected between the wear-resistant block and the inner wall of the groove.

4. The reverse shift fork according to claim 1, wherein the cross-sectional shape of the protrusion is a right triangle, and the side of the right triangle adjacent to the jaw is a right-angled side.

5. The reverse shift fork according to claim 1, wherein when the fork lever is coupled to the fork body, one end of the abutting plate abuts against the vertical portion of the jaw.

6. The reversing gear shifting fork according to claim 1, wherein a shaft hole is formed in the shifting fork rod, a protective sleeve is further arranged in the shaft hole, steel balls are embedded in the protective sleeve, and the steel balls are distributed along the circumference.

7. The reverse shift fork according to claim 1, wherein the inner slot has a right trapezoid cross section, the protrusion has a right trapezoid cross section, the inner slot has a larger right trapezoid area than the protrusion, and the protrusion is slidable relative to the inner slot.