CN216915368U

CN216915368U - Wheel rim

Info

Publication number: CN216915368U
Application number: CN202220401798.0U
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; one side of the first end is provided with a first transition surface, a second transition surface, a third transition surface, a first inclined surface, a fourth transition surface and a first outer flange in sequence from the direction far away from the second end; one side of the second end is provided with a fifth transition surface, a sixth transition surface, a seventh transition surface, a second inclined surface, an eighth transition surface and a second outer flange in sequence from the direction far away from the first end, the first transition surface, the third transition surface, the fourth transition surface, the fifth transition surface, the seventh transition surface and the eighth transition surface are arc surfaces, and the thickness of the materials of the first transition surface, the third transition surface, the fourth transition surface, the fifth transition surface, the seventh transition surface and the eighth transition surface is larger than that of the connecting parts at the two ends of the first transition surface and the second transition surface. This rim is through the material thickness that increases transition face department for the dangerous section intensity of the transition face of rim improves, and the life of rim can promote, realizes the purpose of control weight, can also reduce manufacturing cost.

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 on the wheel at its upper periphery, 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 drop center in 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 overcome the defects 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, the width of the rim is 408mm, the outer diameter of the rim is 1020.8mm, the middle part of the outer circumferential surface of the rim is provided with an annular groove arranged along the circumferential direction of the outer circumferential surface of the rim, the inner diameter of the rim at the annular groove is 918mm, and the annular groove is provided with a first end and a second end;

the rim is also provided with a first transition surface, a second transition surface, a third transition surface, a first inclined surface, a fourth transition surface and a first outer flange which sequentially extend upwards from the direction close to the first end and far away from the second end, and the first end, the first transition surface, the second transition surface, the third transition surface, the first inclined surface, the fourth transition surface and the first outer flange are sequentially connected;

the rim is also provided with a fifth transition surface, a sixth transition surface, a seventh transition surface, a second inclined surface, an eighth transition surface and a second outer flange which sequentially extend upwards from the direction close to the second end and far away from the first end, and the second end, the fifth transition surface, the sixth transition surface, the seventh transition surface, the second inclined surface, the eighth transition surface and the second outer flange are sequentially connected;

the first transition surface, the third transition surface, the fourth transition surface, the fifth transition surface, the seventh transition surface and the eighth transition surface are arc surfaces, and the material thickness of each transition surface is larger than that of the connection part at the two ends of the transition surface.

Preferably, the first outer flange includes a first connecting surface, a first arc-shaped surface and a first outer side surface that extend upward in sequence from a direction that is close to the first end and is far away from the second end, the fourth transition surface, the first connecting surface, the first arc-shaped surface and the first outer side surface are connected in sequence, the first connecting surface is perpendicular to the outer circumferential surface of the circular groove, and the material thickness of the first arc-shaped surface is greater than the material thickness of the first connecting surface and the first outer side surface.

Preferably, the second outer flange includes from being close to the second end, and keep away from the direction of first end upwards extends in proper order and connects face, second arcwall face and second lateral surface, the eighth transition face the second is connected the face the second arcwall face with the second lateral surface connects gradually, the second is connected the face perpendicular to the outer peripheral face of ring groove, the material thickness of second arcwall face is greater than the second is connected the face with the material thickness of second lateral surface.

Preferably, the width of each of the first outer flange and the second outer flange is 13.5mm, and the arc radius of each of the first arc-shaped surface and the second arc-shaped surface is 11 mm.

Preferably, the rim has a bisecting plane in the width direction, and the first and second connection faces, the first and second arc-shaped faces, and the first and second outer side faces are respectively symmetrical about the bisecting plane.

Preferably, the rim has a bisecting plane in the width direction, and the first end and the second end, the first inclined surface and the second inclined surface, the third transition surface and the seventh transition surface, the fourth transition surface and the eighth transition surface, and the first outer flange and the second outer flange are respectively symmetrical about the bisecting plane.

Preferably, the arc radius of the first transition surface and the fifth transition surface is 11mm, the arc radius of the third transition surface and the seventh transition surface is 10mm, and the arc radius of the fourth transition surface and the eighth transition surface is 6 mm.

Preferably, the included angles between the first inclined plane and the outer peripheral surface of the circular groove and the included angles between the second inclined plane and the outer peripheral surface of the circular groove are both 5 °.

Preferably, an air tap mounting hole is further formed in the rim, and the air tap mounting hole is formed in one side, close to the first outer flange, of the outer peripheral surface of the rim.

Preferably, the rim is formed by roll forming through a cylindrical structure, the initial thickness of the cylindrical structure is 7-12mm, the material thickness of the first inclined plane and the second inclined plane is reduced by 0-3.5mm compared with the initial thickness, and the material thickness of the first transition surface, the third transition surface, the fourth transition surface, the fifth transition surface, the seventh transition surface and the eighth transition surface 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 through the material thickness that increases transition face department for the dangerous section intensity of the transition face of rim improves, and the life of rim can promote. Meanwhile, the material thickness of the two sides of the transition surface of the rim is controlled to be smaller than that of the transition surface, so that the purpose of controlling the weight is achieved, and the manufacturing cost can be reduced.

Drawings

Fig. 1 is a schematic structural view of a rim according to an embodiment of the present invention.

Fig. 2 is a cross-sectional view (one) of a rim according to an embodiment of the present invention.

Fig. 3 is a sectional view (two) of a rim according to an embodiment of the present invention.

Description of reference numerals:

circular groove 100

First end 101

Second end 102

Median plane 103

First inclined plane 104

Second inclined surface 105

First transition surface 111

Second transition surface 112

Third transition surface 113

Fourth transition surface 114

Fifth transition surface 115

Sixth transition surface 116

Seventh transition surface 117

Eighth transition surface 118

First outer flange 120

First connection section 121

First arc segment 122

First outboard section 123

Second outer flange 130

Second connection section 131

Second arc segment 132

Second outer section 133

Air tap mounting hole 140

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.

The utility model provides a rim, the model is W15 × 38(38 × W15L), the structure is shown in figure 1, the width L of the rim is₁Is composed of

Outer diameter phi of rim₁Is composed of

The middle part of the outer peripheral surface of the rim is provided with a circular ring-shaped groove 100 arranged along the circumferential direction of the outer peripheral surface of the rim, and the inner diameter phi of the rim at the circular ring-shaped groove 100 is₂Is 918 +/-1.5 mm.

Specifically, as shown in fig. 2, the rim further has a first transition surface 111, a second transition surface 112, a third transition surface 113, a first inclined surface 104, a fourth transition surface 114, and a first outer flange 120, which extend upward in sequence from a direction close to the first end 101 and away from the second end 102, and the first end 101, the first transition surface 111, the second transition surface 112, the third transition surface 113, the first inclined surface 104, the fourth transition surface 114, and the first outer flange 120 are connected in sequence. The rim further has a fifth transition surface 115, a sixth transition surface 116, a seventh transition surface 117, a second inclined surface 105, an eighth transition surface 118 and a second outer flange 130 which extend upwards in sequence from a direction close to the second end 102 and far from the first end 101, and the second end 102, the fifth transition surface 115, the sixth transition surface 116, the seventh transition surface 117, the second inclined surface 105, the eighth transition surface 118 and the second outer flange 130 are connected in sequence.

In this embodiment, the first transition surface 111, the third transition surface 113, the fourth transition surface 114, the fifth transition surface 115, the seventh transition surface 117, and the eighth transition surface 118 are arc surfaces, and the respective material thickness thereof is greater than the material thickness of the connection portion at the two ends thereof.

Here, taking the first transition surface 111 as an example: as shown in fig. 2, the two sides of the first transition surface 111 are respectively provided with the annular groove 100 and the second transition surface 112, and the material thickness of the first transition surface 111 is thicker than that of the annular groove 100 and the second transition surface 112, so that the structural strength of the rim at the corner is improved, and the overall weight of the rim is kept at a relatively low level, so as to achieve the purposes of reducing weight and cost while ensuring the overall strength of the rim.

According to the rim, the material thickness of the first transition surface 111, the third transition surface 113, the fourth transition surface 114, the fifth transition surface 115, the seventh transition surface 117 and the eighth transition surface 118 is increased, so that the strength of the dangerous section of each transition surface of the rim is improved, and the service life of the rim can be prolonged. Meanwhile, the material thickness of the two sides of each transition surface of the rim is controlled to be smaller than that of each transition surface, so that the purpose of controlling the weight is achieved, and the manufacturing cost can be reduced.

As shown in fig. 2, the first outer flange 120 includes a first connection section 121, a first arc-shaped section 122 and a first outer side section 123, wherein the first connection section 121 is connected to the third transition surface 113 and perpendicular to the outer circumferential surface of the circular groove 100, and the material thickness of the first arc-shaped section 122 is also greater than the material thickness of the first connection section 121 and the first outer side section 123, so that the strength at the first arc-shaped section 122 of the first outer flange 120 is enhanced. In addition, the second outer flange 130 includes a second connecting section 131, a second arc-shaped section 132 and a second outer section 133, the second connecting section 131 is connected with the sixth transition surface 116 and is perpendicular to the outer circumferential surface of the circular groove 100, and the material thickness of the second arc-shaped section 132 is greater than that of the second connecting section 131 and the second outer section 133, so that the strength at the second arc-shaped section 132 of the second outer flange 130 is also enhanced.

As shown in fig. 3, in the present embodiment, the rim has a bisecting plane 103 in the width direction, and the first outer flange 120 and the second outer flange 130 are symmetrical with respect to the bisecting plane 103, that is, the first connecting surface and the second connecting surface, the first arc surface and the second arc surface, and the first outer side surface and the second outer side surface are symmetrical with respect to the bisecting plane 103, respectively. The first outer flange 120 and the second outer flange 130 are the same size, and the width D of the first outer flange 120 and the second outer flange 130₁Are all made of

Arc radius R of first arc segment 122 and second arc segment 132₄Are all 11mm, D in FIG. 3₂381. + -.5 mm, D₃Is 33mm, D₄Is composed of

φ₃Is 970 +/-0.4 mm.

As shown in fig. 3, the first and second ends 101, 102, the first and

second bevels

104, 105, the third and seventh transition surfaces 113, 117, the fourth and eighth transition surfaces 114, 118, and the first and second

outer flanges

120, 130 are symmetrical about the bisecting plane 103, respectively. Specifically, the radius R of the arc of the first transition surface 111 and the fifth transition surface 115₁Arc radii R of the third transition surface 113 and the seventh transition surface 117, both 11mm₂Arc radii R of fourth transition surface 114 and eighth transition surface 118, each 10mm₃All 6mm, the included angles A between the first inclined surface 104 and the second inclined surface 105 and the peripheral surface of the circular groove 100₁Are all at 5 °

As shown in fig. 1, an air nozzle mounting hole 140 is further provided on the rim, and the air nozzle mounting hole 140 is provided on the outer peripheral surface of the rim on the side close to the first outer flange 120, specifically, on the surfaces of the first transition surface 111 and the second transition surface 112. The nozzle mounting hole 140 has a diameter of 15.7 mm.

The material of the rim in the embodiment is medium carbon steel below 440, and the rim is formed by a cylindrical structure rolling process. The initial thickness of the cylindrical structure is 7-12mm, the material thickness of the first inclined surface 104, the second inclined surface 105, the first connecting section 121, the second connecting section 131, the first outer side section 123 and the second outer side section 133 is reduced by 0.5-3.5mm compared with the initial thickness, the material thickness of the second transition surface 112 and the sixth transition surface 116 is reduced by 0.75mm or less compared with the initial thickness, and the material thickness of the first transition surface 111, the third transition surface 113, the fourth transition surface 114, the fifth transition surface 115, the seventh transition surface 117 and the eighth transition surface 118 is increased by at least 1mm compared with the initial thickness of the material. By thinning the material at the portions, thinned material is supplied to the respective curved transition surfaces for the purpose of thickening the material thickness of the transition surfaces.

The rim in the prior art is usually made of alloy steel materials, and because the alloy steel materials are poor in plasticity, easy to crack and high in rejection rate, the strength of the rim cannot be enhanced in a mode of thickening the thickness of each transition surface, and the thickness of each part of the rim is usually equal. 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 transition surface, 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, the size clearance of enlargiing each transition face department makes the material extrusion of other positions department move the bodiness to clearance department (transition face department promptly) for the dangerous section intensity of each transition face 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, characterized in that the width of the rim is 408mm, the outer diameter of the rim is 1020.8mm, the middle part of the outer circumferential surface of the rim is provided with a circular ring-shaped groove arranged along the circumferential direction of the outer circumferential surface of the rim, the inner diameter of the rim at the circular ring-shaped groove is 918mm, and the circular ring-shaped groove is provided with a first end and a second end;

2. The rim according to claim 1, wherein the first outer flange includes a first connecting surface, a first arc-shaped surface and a first outer side surface extending upward in sequence from a direction close to the first end and away from the second end, the fourth transition surface, the first connecting surface, the first arc-shaped surface and the first outer side surface are connected in sequence, the first connecting surface is perpendicular to the outer circumferential surface of the annular groove, and the material thickness of the first arc-shaped surface is greater than that of the first connecting surface and the first outer side surface.

3. The rim according to claim 2, wherein the second outer flange includes a second connecting surface, a second arc-shaped surface and a second outer side surface extending upward in sequence from a direction close to the second end and away from the first end, the eighth transition surface, the second connecting surface, the second arc-shaped surface and the second outer side surface are connected in sequence, the second connecting surface is perpendicular to the outer circumferential surface of the annular groove, and the material thickness of the second arc-shaped surface is greater than the material thickness of the second connecting surface and the second outer side surface.

4. The wheel rim of claim 3, wherein the first outer flange and the second outer flange each have a width of 13.5mm and the first arcuate surface and the second arcuate surface each have a radius of curvature of 11 mm.

5. The rim according to claim 3, characterized in that it has a median plane in the width direction of the rim, the first and second connection faces, the first and second arc faces, the first and second outer side faces being symmetrical with respect to the median plane, respectively.

6. The rim of claim 1, having a bisecting plane in a width direction of the rim, the first and second ends, the first and second beveled surfaces, the third and seventh transition surfaces, the fourth and eighth transition surfaces, the first and second outer flanges being symmetrical about the bisecting plane, respectively.

7. The rim of claim 1, wherein the first transition surface and the fifth transition surface have a radius of 11mm, the third transition surface and the seventh transition surface have a radius of 10mm, and the fourth transition surface and the eighth transition surface have a radius of 6 mm.

8. The wheel rim of claim 1, wherein the first and second inclined surfaces each include an angle of 5 ° with respect to the outer circumferential surface of the annular groove.

9. The wheel rim of claim 1, further comprising air tap mounting holes formed in the rim, the air tap mounting holes being formed in the outer peripheral surface of the rim on a side thereof adjacent to the first 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 and second inclined surfaces is reduced by 0 to 3.5mm compared to the initial thickness, and the material thickness of the first, third, fourth, fifth, seventh and eighth transition surfaces is increased by 0.5 to 1.5mm compared to the initial thickness of the material.