CN216915379U

CN216915379U - Wheel rim

Info

Publication number: CN216915379U
Application number: CN202220402449.0U
Authority: CN
Inventors: 张兴元; 张丰
Original assignee: Shanghai Jialong Technology Development Co ltd; Shijiazhuang Zhongxing Machinery Manufacturing Co ltd
Current assignee: Shanghai Jialong Technology Development Co ltd; Shijiazhuang Zhongxing Machinery Manufacturing Co ltd
Priority date: 2022-02-25
Filing date: 2022-02-25
Publication date: 2022-07-08
Anticipated expiration: 2032-02-25

Abstract

The utility model provides a rim, wherein a circular groove is provided with a first end and a second end, and one side of the first end is sequentially provided with a first arc-shaped transition section, a first side edge, a second arc-shaped transition section, a second side edge, a third arc-shaped transition section and a first outer flange from the direction far away from the second end; one side of the second end is provided with a fourth arc transition section, a third side, a fifth arc transition section, a fourth side, a sixth arc transition section and a second outer flange in sequence from the direction far away from the first end, and the material thicknesses of the first arc transition section, the second arc transition section, the third arc transition section, the fourth arc transition section, the fifth arc transition section and the sixth arc transition section are respectively larger than the material thicknesses of two sides of each arc transition section. The intensity of the dangerous section of each arc transition section of the rim is improved, and the service life of the rim can be prolonged.

Description

Wheel rim

Technical Field

The utility model relates to a rim.

Background

The rim, commonly known as a rim, is a component that mounts and supports the tire of the wheel around the wheel and forms the wheel with the spokes. The common forms of rims are mainly two: drop center rims and flat bottom rims. For a drop center rim, the rim is unitary with a deep well in the middle of its cross-section. It has a flange with shoulder for receiving the tyre bead of the tyre casing, the shoulder is usually inclined slightly towards the middle, and the maximum diameter of the inclined part is called the diameter of the tyre bead and the rim. The middle part of the cross section is made into a deep groove so as to be convenient for the disassembly and assembly of the outer tire. The deep groove rim has simple structure, high rigidity and small mass, and is most suitable for small-size tires with high elasticity.

Along with agricultural mechanical equipment's weight increases gradually, has proposed higher requirement to the structural strength and the bearing capacity of rim, and at present, the mode of solving promotion rim structural strength chooses for use thicker material, the steel manufacturing rim of higher strength, but can lead to the dead weight of rim to rise, the cost height.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problems of heavy weight, high cost and low strength of a rim in the prior art, and provides the rim.

The utility model solves the technical problems through the following technical scheme:

a rim is 281.5mm in width, 444.5mm in outer diameter, a circular groove is formed in the middle of the outer circumferential surface of the rim and circumferentially arranged along the outer circumferential surface of the rim, the inner diameter of the rim at the circular groove is 34.3mm, the circular groove is provided with a first end and a second end, a first side edge and a second side edge which extend obliquely upwards and a first outer flange are sequentially arranged on one side of the first end from the direction far away from the second end, the first end is connected with the first side edge through a first arc transition section, the first side edge is connected with the second side edge through a second arc transition section, and the second side edge is connected with the first outer flange through a third arc transition section; one side of the second end is provided with a third side edge and a fourth side edge which are inclined and extend upwards and a second outer flange in sequence from the direction far away from the first end, the second end is connected with the third side edge through a fourth arc transition section, the third side edge is connected with the fourth side edge through a fifth arc transition section, the fourth side edge is connected with the second outer flange through a sixth arc transition section, and the material thickness of the first arc transition section, the second arc transition section, the third arc transition section, the fourth arc transition section, the fifth arc transition section and the sixth arc transition section is equal to the material thickness of two sides of each arc transition section.

Preferably, the first outer flange includes a first arcuate segment and a first outboard segment, the first arcuate segment being connected to the third arcuate transition segment, the first arcuate segment having a material thickness greater than a material thickness of the first outboard segment.

Preferably, the second outer flange includes a second arcuate segment and a second outer segment, the second arcuate segment being connected to the sixth arcuate transition segment, the second arcuate segment having a material thickness greater than a material thickness of the second outer segment.

Preferably, the width of each of the first outer flange and the second outer flange is 17mm, and the arc radius of each of the first arc-shaped section and the second arc-shaped section is 12.7 mm.

Preferably, the inclination angle of the first side is greater than the inclination angle of the second side, the inclination angle of the third side is greater than the inclination angle of the fourth side, and the inclination angles of the first side and the fourth side are both 5 °.

Preferably, the included angle between the third side and the circular groove is 130 °.

Preferably, the radius of the first arc transition section and the fourth arc transition section is 7mm, the radius of the second arc transition section and the fifth arc transition section is 13.5mm, and the arc radius of the third arc transition section and the sixth arc transition section is 6.5 mm.

Preferably, the width between the end of the sixth arcuate transition section near the second outer flange and the end of the third arcuate transition section near the first outer flange is 247.5 mm.

Preferably, the rim is further provided with an air tap mounting hole, and the air tap mounting hole is formed in one side, close to the second outer flange, of the outer circumferential surface of the rim.

Preferably, the rim is roll-formed by a cylindrical structure, the initial thickness of the cylindrical structure is 7-12mm, the material thickness of the first side, the second side, the third side and the fourth side is reduced by 0.5-3.5mm compared with the initial thickness, and the material thickness of the first arc-shaped transition section, the second arc-shaped transition section, the third arc-shaped transition section, the fourth arc-shaped transition section, the fifth arc-shaped transition section and the sixth arc-shaped transition section is increased by 0.5-1.5mm compared with the initial thickness of the material.

The positive progress effects of the utility model are as follows:

this rim is through the material thickness that increases each arc changeover portion for the dangerous section intensity of each arc changeover portion of rim improves, and the life of rim can promote. Meanwhile, the material thickness of the two sides of each arc transition section of the rim is controlled, so that the material thickness of the two sides of each arc transition section is smaller than that of each arc transition section, the purpose of controlling the weight is achieved, and the manufacturing cost can be reduced.

Drawings

Fig. 1 is a partial sectional view of a rim according to an embodiment of the present invention.

Description of reference numerals:

annular groove 100

First side 101

Second side 102

Third side 103

Fourth side 104

First arcuate transition section 111

Second arcuate transition section 112

Third arcuate transition segment 113

Fourth arcuate transition segment 114

Fifth arcuate transition segment 115

Sixth curved transition section 116

A first outer flange 120, a first arcuate segment 121, a first outboard segment 122

A second outer flange 130, a second arcuate segment 131, a second outer segment 132

Detailed Description

The present invention will be more clearly and completely described in the following description of preferred embodiments, taken in conjunction with the accompanying drawings.

As shown in FIG. 1, the present invention provides a rim, type 9.75X 16.5, having a width of

The outer diameter of the rim is 444.5 +/-1.4 mm, the middle part of the outer circumferential surface of the rim is provided with a circular groove 100 which is arranged along the circumferential direction of the outer circumferential surface of the rim, the width of the circular groove 100 is 113mm, and the inner diameter of the rim at the circular groove 100 is

The annular groove 100 has a first end and a second end. One side of the first end is provided with a first side edge 101, a second side edge 102 and a first outer flange 120 which extend obliquely and upwards in sequence from the direction far away from the second end, the first end is connected with the first side edge 101 through a first arc transition section 111, the first side edge 101 is connected with the second side edge 102 through a second arc transition section 112, and the second side edge 102 is connected with the first outer flange 120 through a third arc transition section 113.

One side of the second end is provided with a third side 103, a fourth side 104 and a second outer flange 130 which are inclined and extend upwards in sequence from the direction far away from the first end, the second end is connected with the third side 103 through a fourth arc transition section 114, the third side 103 is connected with the fourth side 104 through a fifth arc transition section 115, the fourth side 104 is connected with the second outer flange 130 through a sixth arc transition section 116, and the material thicknesses of the first arc transition section 111, the second arc transition section 112, the third arc transition section 113, the fourth arc transition section 114, the fifth arc transition section 115 and the sixth arc transition section 116 are respectively greater than the material thicknesses of two sides of each arc transition section. Here, the first arc transition section 111 is taken as an example: as shown in fig. 1, the two sides of the first arc-shaped transition section 111 are respectively provided with the circular groove 100 and the first side 101, and the material thickness of the first arc-shaped transition section 111 is thicker than that of the circular groove 100 and the first side 101, so that the structural strength of the rim at a corner is improved, and the overall weight of the rim is kept at a relatively low level, so that the purposes of reducing weight, reducing cost and the like are achieved while the overall strength of the rim is ensured.

The first outer flange 120 includes a first arcuate segment 121 and a first outboard segment 122, the first arcuate segment 121 being connected to the third arcuate transition segment 113, the first arcuate segment 121 having a material thickness greater than a material thickness of the first outboard segment 122.

The second outer flange 130 includes a second arcuate segment 131 and a second outer segment 132, the second arcuate segment 131 being connected to the sixth arcuate transition segment 116, the second arcuate segment 131 having a material thickness greater than a material thickness of the second outer segment 132.

The width of the first outer flange 120 and the width of the second outer flange 130 are both 17mm, and the arc radius of the first arc-shaped section 121 and the arc-shaped section 131 are both 12.7 mm.

The angle of inclination of the first side 101 is greater than the angle of inclination of the second side 102, the angle of inclination of the third side 103 is greater than the angle of inclination of the fourth side 104, and the angles of inclination of the first side 101 and the fourth side 104 are both 5 °.

The radius of first arc changeover portion and fourth arc changeover portion is 7mm, and the radius of second arc changeover portion and fifth arc changeover portion is 13.5mm, and the circular arc radius of third arc changeover portion and sixth arc changeover portion is 6.5 mm.

The width between the end of the sixth arcuate transition segment 116 proximate the second outer flange 130 and the end of the third arcuate transition segment 113 proximate the first outer flange 120 is 247.5 ± 3 mm.

An air nozzle mounting hole is further formed in the rim and is formed in one side, close to the second outer flange 130, of the outer peripheral surface of the rim.

The rim is formed by rolling through a cylindrical structure, the initial thickness of the cylindrical structure is 7-12mm, the material thickness of the first side edge 101, the second side edge 102, the third side edge 103 and the fourth side edge 104 is reduced by 0.5-3.5mm compared with the initial thickness, and the material thickness of the first arc-shaped transition section 111, the second arc-shaped transition section 112, the third arc-shaped transition section 113, the fourth arc-shaped transition section 114, the fifth arc-shaped transition section 115 and the sixth arc-shaped transition section 116 is increased by 0.5-1.5mm compared with the initial thickness of the material.

The rim among the prior art adopts alloy steel material usually, because alloy steel material plasticity is not good, easy fracture, and the rejection rate is high, consequently can not adopt the mode of each arc transition section thickness of bodiness to strengthen rim intensity, the thickness everywhere of rim all is the uniform thickness usually. The plasticity of the common steel plate including the medium carbon steel is better, the strength of the obtained rim is higher by reducing the material thickness of each side edge and increasing the material thickness of each arc transition section, and the bench test can reach 100 ten thousand times, which is far higher than the test standard of 36 ten thousand times of the conventional rim made of alloy steel materials.

Specifically, the rim that this embodiment provided utilizes circumference forging itself in order to increase material strength, and through changing the mould size of forging, enlarge the size clearance of each arc transition department, make the material extrusion of other positions department move the bodiness to clearance department (arc transition department promptly) for dangerous section intensity at each arc transition department improves greatly, and life will promote greatly.

The rim provided by the embodiment is formed in one step by adopting an innovative six-column cold rolling forging mode, and the rim formed in one step is formed by performing ten thousand tons of cold rolling forging on the circumference of the rim, so that the rim with good rigidity, light weight and high strength is formed, and under the condition of the same material, the weight can be reduced to produce the light rim, and the production mode of the traditional rim is thoroughly changed. The traditional three horizontal cold rolling and rolling machines are changed into a vertical rolling and forming machine, the production process is simplified, the production speed is improved, and more importantly, the existing process of stretching, bending and deforming is changed into the process of forging, extruding and deforming by ten thousand tons of circumference, so that the stretching and yield strength of the rim material can be improved, and the service life is prolonged. The rim drum test can be performed more than 100 times, the service life of the bench test is long, and the actual service life is greatly prolonged.

While specific embodiments of the utility model have been described above, it will be appreciated by those skilled in the art that this is by way of example only, and that the scope of the utility model is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and scope of the utility model, and these changes and modifications are within the scope of the utility model.

Claims

1. A rim is characterized in that the width of the rim is 281.5mm, the outer diameter of the rim is 444.5mm, a circular groove is formed in the middle of the outer circumferential surface of the rim and circumferentially arranged along the outer circumferential surface of the rim, the inner diameter of the rim at the circular groove is 34.3mm, the circular groove is provided with a first end and a second end, a first side edge, a second side edge and a first outer flange which extend obliquely upwards are sequentially arranged on one side of the first end from the direction far away from the second end, the first end is connected with the first side edge through a first arc transition section, the first side edge is connected with the second side edge through a second arc transition section, and the second side edge is connected with the first outer flange through a third arc transition section; one side of the second end is provided with a third side edge and a fourth side edge which are inclined and extend upwards and a second outer flange in sequence from the direction far away from the first end, the second end is connected with the third side edge through a fourth arc transition section, the third side edge is connected with the fourth side edge through a fifth arc transition section, the fourth side edge is connected with the second outer flange through a sixth arc transition section, and the material thickness of the first arc transition section, the second arc transition section, the third arc transition section, the fourth arc transition section, the fifth arc transition section and the sixth arc transition section is equal to the material thickness of two sides of each arc transition section.

2. The wheel rim of claim 1, wherein the first outer flange includes a first arcuate segment and a first outboard segment, the first arcuate segment being connected to the third arcuate transition segment, the first arcuate segment having a material thickness greater than a material thickness of the first outboard segment.

3. The wheel rim of claim 2, wherein the second outer flange includes a second arcuate segment and a second outer segment, the second arcuate segment being connected to the sixth arcuate transition segment, the second arcuate segment having a material thickness greater than a material thickness of the second outer segment.

4. The wheel rim of claim 3, wherein the first outer flange and the second outer flange each have a width of 17mm, and the first arcuate segment and the second arcuate segment each have an arc radius of 12.7 mm.

5. The rim of claim 1, wherein the angle of inclination of the first side is greater than the angle of inclination of the second side, the angle of inclination of the third side is greater than the angle of inclination of the fourth side, and the angles of inclination of the first side and the fourth side are both 5 °.

6. The wheel rim of claim 5, wherein the third side includes an angle of 130 ° with respect to the annular recess.

7. The wheel rim of claim 5, wherein the radius of the first curved transition and the fourth curved transition is 7mm, the radius of the second curved transition and the fifth curved transition is 13.5mm, and the radius of the third curved transition and the sixth curved transition is 6.5 mm.

8. The wheel rim of claim 1, wherein a width between an end of the sixth arcuate transition proximate the second outer flange and an end of the third arcuate transition proximate the first outer flange is 247.5 mm.

9. The rim according to claim 1, further comprising air nozzle mounting holes formed in the rim on a side of the outer peripheral surface of the rim adjacent to the second outer flange.

10. The rim according to any one of claims 1 to 9, wherein the rim is roll-formed from a cylindrical structure having an initial thickness of 7 to 12mm, the material thickness of the first, second, third and fourth sides is reduced by 0.5 to 3.5mm compared to the initial thickness, and the material thickness of the first, second, third, fourth, fifth and sixth curved transitions is increased by 0.5 to 1.5mm compared to the initial thickness of the material.