Mechanical connection yoke capable of limiting and preventing collision

Abstract

The utility model discloses a mechanical connection yoke capable of limiting and preventing collision. The mechanical connection yoke comprises a first connection yoke, a second connection yoke and a cross shaft assembly, a positioning mechanism for positioning the bearing sleeve is arranged in the bearing groove; a limiting groove is formed in the outer side of the bearing sleeve, an annular groove corresponding to the limiting groove is formed in the bearing groove, a limiting piece and an elastic extrusion mechanism are installed in the limiting groove, and the limiting piece can enter the annular groove under extrusion of the elastic extrusion mechanism; the elastic extrusion mechanism comprises a groove formed in the limiting groove, and an extrusion spring and an ejector block are arranged in the groove; the limiting pieces on the two sides cannot completely reset and enter the limiting grooves under the action of the multiple extrusion springs, so that the bearing sleeves are locked in the bearing grooves, the limiting pieces are made of high-hardness wear-resistant alloy materials, are stable and are not prone to deformation, gaps are effectively prevented from being easily generated between the first connecting yoke and the cross shaft and between the second connecting yoke and the cross shaft, shaking and collision are avoided, and the service life of the bearing sleeves is prolonged. Abrasion is reduced, transmission precision is improved, and service life is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of universal joint, concretely relates to a mechanical connecting joint fork with position limiting and anti-collision function. BACKGROUND

[0002] The main function of the universal joint connecting joint fork is to transmit and convert power. The connecting joint fork is an important mechanical transmission element, which is widely used in industrial production, agricultural machinery, automobiles, aerospace and other fields. The main function of the connecting joint fork is to convert rotary motion into linear motion, or convert linear motion into rotary motion, and through cooperation with other transmission devices, the movement and position control of the mechanical device are realized.

[0003] When the connecting joint fork is installed, the bearing sleeve of the universal joint fork is usually fixed by using a snap spring. Specifically, a snap spring groove is formed at both ends of the bearing sleeve, and then the snap spring is embedded in the groove to fix the bearing sleeve.

[0004] However, considering that the snap spring is assembled and disassembled by elastic deformation, it is easy to deform during use, which causes the connecting joint fork and the cross shaft to have a gap after a long time of use, resulting in shaking and collision, which accelerates wear and tear, affects transmission accuracy and service life. UTILITY MODEL CONTENTS

[0005] The utility model provides a mechanical connecting joint fork with position limiting and anti-collision function, the limiting piece at both sides cannot completely reset into the limiting groove under the action of multiple extrusion springs, thereby locking the bearing sleeve in the bearing groove, and since the limiting piece is made of high-hardness wear-resistant alloy material, it is stable and not easy to deform, effectively preventing the first connecting joint fork, the second connecting joint fork and the cross shaft from having a gap, preventing shaking and collision, reducing wear and tear, improving transmission accuracy and service life, thereby solving the problems in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a mechanical connecting joint fork with position limiting and anti-collision function, comprising a first connecting joint fork and a second connecting joint fork, the first connecting joint fork and the second connecting joint fork are connected through a cross shaft assembly; the cross shaft assembly comprises a cross shaft and a bearing sleeve mounted on the shaft head of the cross shaft, the first connecting joint fork and the second connecting joint fork are each provided with a bearing groove corresponding to the bearing sleeve on the two shaft heads of the cross shaft, and a positioning mechanism for positioning the bearing sleeve is arranged in the bearing groove.

[0007] Preferably, a limiting groove is arranged on the outside of the bearing sleeve, a ring groove corresponding to the limiting groove is arranged in the bearing groove, a limiting piece and an elastic extrusion mechanism on the inner side of the limiting piece are arranged in the limiting groove, and the limiting piece can enter the ring groove under the extrusion of the elastic extrusion mechanism.

[0008] Preferably, the width of the limiting piece is twice the width of the ring groove.

[0009] Preferably, the limiting piece is made of high-hardness wear-resistant alloy material.

[0010] Preferably, the limiting grooves on the bearing sleeve are mirror-imaged and arranged at two positions, and a spacing part is arranged between the two limiting grooves.

[0011] Preferably, the elastic extrusion mechanism comprises a groove arranged in the limiting groove, an extrusion spring and a top block are arranged in the groove, and the top block is extruded against the inner side of the limiting piece through the extrusion spring.

[0012] Preferably, at least two grooves are arranged on the same limiting groove, and the grooves are mirror-imaged from the middle part.

[0013] Preferably, the first connecting yoke and the second connecting yoke are both provided with straight holes corresponding to the limiting pieces.

[0014] Compared with the prior art, the utility model has the beneficial effects that:

[0015] 1. The limiting pieces on both sides cannot be completely reset into the limiting grooves under the action of the plurality of extrusion springs, so that the bearing sleeve is locked in the bearing groove, and since the limiting piece is made of high-hardness wear-resistant alloy material, it is stable and not easy to deform, effectively prevents the first connecting yoke, the second connecting yoke and the cross shaft from being easy to have a gap, does not shake and collide, reduces wear, and improves transmission accuracy and service life.

[0016] 2. When disassembling, the limiting pieces on both sides can be completely pushed back into the limiting grooves by inserting a rod into the straight hole from the outside, so that disassembly can be realized. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a front view structural schematic diagram of the utility model;

[0018] Figure 2 It is a side view and sectional view structural schematic diagram of the first connecting yoke of the utility model;

[0019] Figure 3 It is a top view and sectional view structural schematic diagram of the bearing sleeve of the utility model;

[0020] Figure 4 It is a front view structural schematic diagram of the bearing sleeve of the utility model;

[0021] Figure 5 It is a local sectional view structural schematic diagram of the first connecting yoke and the bearing sleeve of the utility model;

[0022] Figure 6 It is Figure 5 an enlarged structural schematic diagram of A.

[0023] Figure 7 It is first connecting fork part sectional view structure schematic diagram of the utility model.

[0024] In the figure: 1, first connecting fork; 2, second connecting fork; 3, cross shaft; 4, bearing sleeve; 5, bearing groove; 6, limit slot; 7, ring groove; 8, limiting piece; 9, interval part; 10, recess; 11, extrusion spring; 12, top block; 13, straight hole. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the utility model.

[0026] Please refer to Figures 1-7 The utility model provides a kind of limitable anti-collision mechanical connecting fork, including first connecting fork 1 and second connecting fork 2, the first connecting fork 1 with the second connecting fork 2 between it is connected by cross shaft assembly;The cross shaft assembly includes cross shaft 3 and bearing sleeve 4 installed on the shaft head of the cross shaft 3, the first connecting fork 1 with the second connecting fork 2 are equipped with the bearing sleeve 4 corresponding bearing groove 5 on the two shaft heads of the cross shaft 3, the bearing groove 5 is equipped with the positioning mechanism for the bearing sleeve 4 in position;When using, by the shaft head of cross shaft 3 enters bearing groove 5, then insert bearing sleeve 4, positioning mechanism locks bearing sleeve 4 in bearing groove 5, effectively prevent first connecting fork 1, second connecting fork 2 and cross shaft 3 between gap prone to occur, will not shake and collide, reduce abrasion, improve transmission accuracy and service life.

[0027] Specifically, the outer side of the bearing sleeve 4 is provided with a limiting slot 6, the bearing groove 5 is provided with a ring groove 7 corresponding to the limiting slot 6, the limiting slot 6 is provided with a limiting piece 8 and an elastic extrusion mechanism located on the inner side thereof, the limiting piece 8 can enter the ring groove 7 under the extrusion of the elastic extrusion mechanism;In this embodiment, insert bearing sleeve 4, insert bearing sleeve 4 before installing elastic extrusion mechanism limiting piece 8 in the limiting slot 6 on both sides, when inserting, first press the limiting piece 8 inward, so that the limiting piece 8 extrudes the elastic extrusion mechanism to completely enter the limiting slot 6, then insert in place, the limiting slot 6 corresponds to the ring groove 7, at this time, the elastic extrusion mechanism extrudes and rebounds, and the limiting piece 8 is partially extruded into the ring groove 7, and then the limiting pieces 8 on both sides cannot be completely reset into the limiting slot 6 under the action of the elastic extrusion mechanism, so as to lock the bearing sleeve 4 in the bearing groove 5.

[0028] Specifically, the width of the limiting piece 8 is twice the width of the ring groove 7; in this embodiment, the limiting piece 8 can only partially enter the ring groove 7, thereby avoiding the loosening of the bearing sleeve 4 caused by the full entry of the limiting piece 8 into the ring groove 7.

[0029] Specifically, the limiting piece 8 is made of high-hardness wear-resistant alloy material; in this embodiment, the limiting piece 8 is made of high-hardness wear-resistant alloy material, which is stable and not easy to deform, and cooperates with the positioning mechanism to effectively prevent the first connecting yoke 1, the second connecting yoke 2 and the cross shaft 3 from being prone to gaps, thereby reducing the shaking and collision and reducing the wear.

[0030] Specifically, the limiting grooves 6 on the bearing sleeve 4 are mirror-imaged and arranged at two positions, and a spacing part 9 is arranged between the two limiting grooves 6; in this embodiment, the spacing part 9 is arranged to avoid the rotation of the limiting piece 8 relative to the bearing sleeve 4, which is beneficial to the positioning of the internal limiting piece 8 during disassembly.

[0031] Specifically, the elastic extrusion mechanism includes a groove 10 arranged in the limiting groove 6, the groove 10 is provided with an extrusion spring 11 and a top block 12, and the top block 12 is extruded by the extrusion spring 11 and abuts against the inner side of the limiting piece 8; in this embodiment, the extrusion spring 11, the top block 12 and the limiting piece 8 are installed in the limiting grooves 6 on both sides of the inserted bearing sleeve 4, during the insertion, the limiting piece 8 is first pressed inward, so that the limiting piece 8 extrudes the top block 12, at the same time, the limiting piece 8 completely enters the limiting groove 6, then after being inserted in place, the limiting groove 6 corresponds to the ring groove 7, at this time, the top block 12 is partially extruded into the ring groove 7 under the extrusion and rebound of the extrusion spring 11, and the limiting pieces 8 on both sides cannot be completely reset into the limiting groove 6 under the action of the plurality of extrusion springs 11, thereby locking the bearing sleeve 4 in the bearing groove 5.

[0032] Specifically, at least two grooves 10 are arranged on the same limiting groove 6, and a plurality of grooves 10 are mirror-imaged and arranged from the middle part; in this embodiment, the force balance of the top block 12 when extruding the limiting piece 8 is achieved.

[0033] Specifically, the first connecting yoke 1 and the second connecting yoke 2 are provided with straight holes 13 corresponding to the limiting piece 8 on both sides; in this embodiment, when disassembly is needed, a rod is inserted into the straight hole 13 from the outside, and the limiting piece 8 on both sides can be completely extruded back into the limiting groove 6 by force, thereby achieving the disassembly.

[0034] In order to facilitate the understanding of the above technical scheme of the utility model, the working principle or operation mode of the utility model in the actual process will be described in detail.

[0035] Working principle: when using, the shaft head of the cross shaft 3 enters the bearing groove 5, then the bearing sleeve 4 is inserted, before inserting the bearing sleeve 4, the extrusion springs 11, the top blocks 12 and the limiting pieces 8 are installed in the limiting grooves 6 on both sides, when inserting, the limiting pieces 8 are pressed inward first, so that the limiting pieces 8 extrude the top blocks 12, at the same time, the limiting pieces 8 completely enter the limiting grooves 6, then after being inserted in place, the limiting grooves 6 correspond to the ring grooves 7, at this time, the top blocks 12 extrude the limiting pieces 8 into the ring grooves 7 under the extrusion and rebound of the extrusion springs 11, and then the limiting pieces 8 on both sides cannot be completely reset into the limiting grooves 6 under the action of the multiple extrusion springs 11, so that the bearing sleeve 4 is locked in the bearing groove 5, and since the limiting pieces 8 are made of high-hardness wear-resistant alloy material, they are stable and not easy to deform, effectively prevent the first connecting yoke 1 and the second connecting yoke 2 from easily generating a gap with the cross shaft 3, do not shake and collide, reduce wear, improve transmission accuracy and service life; when disassembling, the straight holes 13 are inserted by external rod members, and the limiting pieces 8 on both sides can be completely reset into the limiting grooves 6 by force, so that disassembly can be realized.

[0036] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A mechanical hitch joint with limited position and anti-collision, comprising a first hitch joint (1) and a second hitch joint (2), the first hitch joint (1) and the second hitch joint (2) are connected through a cross shaft assembly; characterized in that, The cross shaft assembly comprises a cross shaft (3) and a bearing sleeve (4) mounted on the shaft head of the cross shaft (3), the first connecting yoke (1) and the second connecting yoke (2) are each provided with a bearing groove (5) corresponding to the bearing sleeve (4) on the two shaft heads of the cross shaft (3), and the bearing groove (5) is provided with a positioning mechanism for positioning the bearing sleeve (4).

2. The anti-collision mechanical coupling knuckle of claim 1, wherein, The outer side of the bearing sleeve (4) is provided with a limiting groove (6), the bearing groove (5) is provided with a ring groove (7) corresponding to the limiting groove (6), the limiting groove (6) is provided with a limiting piece (8) and an elastic extrusion mechanism inside, and the limiting piece (8) can enter the ring groove (7) under the extrusion of the elastic extrusion mechanism.

3. The anti-collision mechanical coupling knuckle of claim 2, wherein, The width of the limiting piece (8) is twice the width of the ring groove (7).

4. The anti-collision mechanical coupling knuckle of claim 2, wherein, The limiting piece (8) is made of high-hardness wear-resistant alloy material.

5. The position-limited anti-collision mechanical coupling clevis of claim 2, wherein, The limiting grooves (6) on the bearing sleeve (4) are mirror-imaged and arranged at two positions, and a spacing part (9) is arranged between the two limiting grooves (6).

6. The position-limited anti-collision mechanical coupling clevis of claim 2, wherein, The elastic extrusion mechanism comprises a groove (10) arranged in the limiting groove (6), the groove (10) is provided with an extrusion spring (11) and a top block (12), and the top block (12) is extruded against the inner side of the limiting piece (8) under the extrusion of the extrusion spring (11).

7. The position-limited anti-collision mechanical coupling clevis of claim 6, wherein, At least two grooves (10) are arranged on the same limiting groove (6), and the multiple grooves (10) are mirror-imaged and arranged from the middle part.

8. The position-limited anti-collision mechanical coupling clevis of claim 6, wherein, The first connecting yoke (1) and the second connecting yoke (2) are each provided with a straight hole (13) corresponding to the limiting piece (8).

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