CN217671961U - Wheel rim - Google Patents

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 second inclined surface, a seventh 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 sixth transition surface and the seventh 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 sixth transition surface and the seventh transition surface is larger than that of the connecting part at one side or two sides of the first transition surface. This rim is through increasing the material thickness of 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 for mounting and supporting a tire on the upper periphery of a wheel, and forms the wheel with 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 dismounting of the outer tyre. 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 support 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 uprises.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a rim in order to overcome among the prior art rim weight heavier, the cost is higher and self intensity is lower defect.

The utility model discloses an above-mentioned technical problem is solved through following technical scheme:

a rim is characterized in that the width of the rim is 411mm, the outer diameter of the rim is 919.2mm, a circular groove arranged along the circumferential direction of the outer circumferential surface of the rim is formed in the middle of the outer circumferential surface of the rim, the inner diameter of the rim at the circular groove is 816.4mm, and the circular 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, 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, and the first inclined surface is provided with a transverse rolling straight line;

the rim is also provided with a fifth transition surface, a sixth transition surface, a second inclined surface, a seventh 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 second inclined surface, the seventh transition surface and the second outer flange are sequentially connected;

the first transition surface, the third transition surface, the fourth transition surface and the seventh transition surface are arc surfaces, and the material thickness of each transition surface is greater than that of the connecting parts at the two ends;

the fifth transition surface is an arc surface, and the material thickness of the fifth transition surface is larger than that of the circular groove;

the sixth transition surface is an arc surface, and the material thickness of the sixth transition surface is larger than that of the second inclined surface.

Preferably, the first outer flange includes a first connection 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 away from the second end, the fourth transition surface, the first connection surface, the first arc-shaped surface, and the first outer side surface are connected in sequence, the first connection 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 thicknesses of the first connection surface and the first outer side surface.

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

Preferably, the widths of the first outer flange and the second outer flange are both 15mm, and the arc radiuses of the first arc-shaped surface and the second arc-shaped surface are both 11mm.

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 sixth transition surface is 10mm, and the arc radius of the fourth transition surface and the seventh transition surface is 6mm.

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

Preferably, the width of the straight cross-rolling pattern on the first inclined plane is 27mm, and the minimum distance between the straight cross-rolling pattern and the first outer flange is 8.5mm.

Preferably, the rim has a bisecting plane in the width direction, and the first end and the second end, the fourth and seventh transition surfaces, and the first and second outer flanges are symmetrical about the bisecting plane, respectively.

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 roll-formed by a cylindrical structure, the initial thickness of the cylindrical structure is 7-12mm, the material thickness of the first inclined surface and the second inclined surface 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 seventh transition surface is increased by 0.5-1.5mm compared with the initial thickness of the material.

The utility model discloses an actively advance the effect and lie in:

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 the rim according to an embodiment of the present invention.

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

Description of reference numerals:

annular groove 100

First end 101

Second end 102

Midsplit 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

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

Transverse rolling straight line 150

Detailed Description

The present invention will be more clearly and completely described below with reference to the accompanying drawings.

The utility model disclosesA rim is provided, the model is W15 × 34 (34 × W15L), the structure is shown in figure 1, the width L of the rim ₁ Is composed of

Outer diameter of rim ₁ Is 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 is ₂ 816.4 +/-1 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 is also provided with a fifth transition surface 115, a sixth transition surface 116, a second inclined surface 105, a seventh transition surface 117 and a second outer flange 130 which extend upwards in sequence from the direction close to the second end 102 and far away from the first end 101, and the second end 102, the fifth transition surface 115, the sixth transition surface 116, the second inclined surface 105, the seventh transition surface 117 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, and the seventh transition surface 117 are arc surfaces, and the material thickness of each is greater than the material thickness of the connection portion at the two ends.

Here, the first transition surface 111 is taken 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.

In this embodiment, the fifth transition surface 115 and the sixth transition surface 116 are arc surfaces, the material thickness of the fifth transition surface 115 is greater than that of the circular groove 100, and the material thickness of the sixth transition surface 116 is greater than that of the second inclined surface 105, 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 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 sixth transition surface 116 and the seventh transition surface 117 is increased, so that the dangerous section strength of each transition surface of the rim is improved, and the service life of the rim can be prolonged. Meanwhile, the material thickness of one side or two sides of each transition surface of the rim is smaller than that of each transition surface by controlling the material thickness of two sides of each transition surface, so that the purpose of controlling the weight is realized, 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 about the bisecting plane 103, that is, the first connecting surface and the second connecting surface, the first arc-shaped surface and the second arc-shaped surface, and the first outer side surface and the second outer side surface are symmetrical about the bisecting plane 103. The dimensions of the first outer flange 120 and the second outer flange 130The same, the width D of the first outer flange 120 and the second outer flange 130 ₁ 15 + -1.5mm, the arc radius R of the first arc-shaped section 122 and the second arc-shaped section 132 ₄ Are all 11mm, D in FIG. 3 ₂ 381 +/-4.5mm ₄ Is composed of

The basic dimension of D4 is 25.4mm, the upper tolerance is +1.2mm, the lower tolerance is-0.4 mm, phi ₃ 868.4 + -0.4 mm.

As shown in fig. 3, the first end 101 and the second end 102, the fourth transition surface 114 and the seventh transition surface 117, and the first outer flange 120 and the second outer flange 130 are symmetrical about the bisecting plane 103, respectively. Specifically, the arc radii R of the fourth transition surface 114 and the seventh transition surface 117 ₃ Both are 6mm, and the included angles A between the first inclined surface 104 and the second inclined surface 105 and the outer peripheral surface of the circular groove 100 ₁ Are all 5 °

As shown in fig. 3, the arc radius R of the fifth transition surface 115 ₁ 11mm, the arc radius R of the sixth transition surface 116 ₂ Is 10mm.

As shown in fig. 1, an air nozzle mounting hole 140 is further formed in the rim, and the air nozzle mounting hole 140 is formed in 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 15.7mm.

As shown in FIG. 1, the first inclined surface 104 of the rim is provided with a cross-rolling straight line 150, the depth of the cross-rolling straight line is 0.4-0.8, the pitch is 1.6-3.2, and the width D is ₅ 27mm, minimum distance D from the first outer flange 120 ₃ Is 8.5mm.

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 plane 104, the second inclined plane 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, and the wall thickness of the first transition surface 111, the second transition surface 112, the third transition surface 113, the fourth transition surface 114, the fifth transition surface 115, the sixth transition surface 116, the seventh transition surface 117, the first arc-shaped section 122 and the second arc-shaped section 132 is larger than or equal to 3.9mm. The thinned material is supplied to the transition surfaces of each arc by thinning the material at the portions for the purpose of thickening the thickness of the material at 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, through changing the mould size of forging, enlarges the size clearance of 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 because the rim formed in one step is formed by performing ten thousand tons of cold rolling forging on the circumference of the rim, 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, so that 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 million times, the service life of the bench test is long, and the actual service life is greatly prolonged.

Although specific embodiments of the present invention have been described above, it will be understood by those skilled in the art that this is by way of example only, and that the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments can be made by those skilled in the art without departing from the spirit and the principles of the present invention, and these changes and modifications are all within the scope of the present invention.

Claims (10)

1. A rim is characterized in that the width of the rim is 411mm, the outer diameter of the rim is 919.2mm, a circular groove arranged along the circumferential direction of the outer circumferential surface of the rim is formed in the middle of the outer circumferential surface of the rim, the inner diameter of the rim at the circular groove is 816.4mm, and the circular 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, 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, and the first inclined surface is provided with a transverse rolling straight line;

the rim is also provided with a fifth transition surface, a sixth transition surface, a second inclined surface, a seventh 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 second inclined surface, the seventh transition surface and the second outer flange are sequentially connected;

the first transition surface, the third transition surface, the fourth transition surface and the seventh transition surface are arc surfaces, and the material thickness of each transition surface is greater than that of the connecting parts at the two ends;

the fifth transition surface is an arc surface, and the material thickness of the fifth transition surface is larger than that of the circular groove;

the sixth transition surface is an arc surface, and the material thickness of the sixth transition surface is larger than that of the second inclined surface.

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 far away from the first end, the seventh 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 peripheral surface of the annular groove, and the material thickness of the second arc-shaped surface is greater than that 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 15mm, and the first arcuate surface and the second arcuate surface each have a radius of curvature of 11mm.

5. 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 sixth transition surface have a radius of 10mm, and the fourth transition surface and the seventh transition surface have a radius of 6mm.

6. The wheel rim of claim 1, wherein the first and second inclined surfaces are each angled 5 ° from the outer circumferential surface of the annular groove.

7. The wheel rim of claim 1, wherein the width of the straight cross-hatching on the first inclined surface is 27mm, and the minimum distance of the straight cross-hatching from the first outer flange is 8.5mm.

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

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 first and second inclined surfaces have a material thickness reduced by 0 to 3.5mm compared to the initial thickness, and the first, third, fourth, fifth, seventh and seventh transition surfaces have a material thickness increased by 0.5 to 1.5mm compared to the initial thickness of the material.

Images