CN217671958U

CN217671958U - Wheel rim

Info

Publication number: CN217671958U
Application number: CN202220393726.6U
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: 2022-10-28
Anticipated expiration: 2032-02-25

Abstract

The utility model provides a rim, wherein the middle part of the outer peripheral surface of the rim is provided with a circular groove which is circumferentially arranged along the outer peripheral surface of the rim, and the circular groove is provided with a first end and a second end; one side of the first end is provided with a first side edge, a second side edge and a first outer flange which are connected through a transition section and extend upwards in an inclined mode in sequence from the direction far away from the second end, and the second side edge is connected with the first outer flange; one side of the second end is provided with a third side edge, a fourth side edge and a second outer flange which are connected through a transition section and extend upwards in an inclined mode in sequence from the direction far away from the first end, the fourth side edge is connected with the second outer flange, and the material thickness of the transition section is equal to the material thickness of two sides of each transition section. This rim is through the material thickness that increases each changeover portion for the dangerous section intensity of each changeover portion 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 drop center in cross-section. It has a flange with shoulder for receiving the tyre bead of the tyre casing, the shoulder is usually slightly inclined towards the middle, and the maximum diameter of the inclined part is called the engagement diameter of the tyre bead and the wheel 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 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 for overcoming among the prior art rim weight is 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, the width of the rim is 552mm, the outer diameter of the rim is 596.9mm, the middle part of the outer circumferential surface of the rim is provided with an annular groove circumferentially arranged along the outer circumferential surface of the rim, the width of the annular groove is 348mm, the inner diameter of the rim at the annular groove is 495mm, and the annular groove is provided with a first end and a second end; one side of the first end is provided with a first side edge, a second side edge and a first outer flange 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 through a first transition section, the first side edge is connected with the second side edge through a second transition section, and the second side edge is connected with the first outer flange; the first end is provided with a first transition section, the second end is provided with a second transition section, the first transition section, the second transition section, the third transition section and the fourth transition section are respectively connected with the first outer flange and the second outer flange, and the material thickness of the first transition section, the second transition section, the third transition section and the fourth transition section is respectively larger than that of two sides of each transition section.

Preferably, the first outer flange includes a first connecting section and a first arc-shaped section, the first connecting section is connected with the second side edge, and the material thickness of the first arc-shaped section is greater than that of the first connecting section.

Preferably, the second outer flange includes a second connecting section and a second arc-shaped section, the second connecting section is connected to the fourth side, and the material thickness of the second arc-shaped section is greater than that of the second connecting section.

Preferably, the width of each of the first outer flange and the second outer flange is 22mm, and the arc radius of each of the first arc-shaped section and the second arc-shaped section is 12.7mm.

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 less than the inclination angle of the fourth side, and the inclination angle of the second side and the inclination angle of the fourth side are both 20 °.

Preferably, the second transition section comprises a first arc-shaped transition section and a third connecting section, the first arc-shaped transition section is connected with the first side edge, and the third connecting section is connected with the second side edge;

the fourth transition section comprises a second arc-shaped transition section and a fourth connecting section, the second arc-shaped transition section is connected with the third side edge, and the fourth connecting section is connected with the fourth side edge.

Preferably, the rim has a bisecting plane in the width direction, the distance between the first end and the bisecting plane is 174mm, the distance between the second end and the bisecting plane is 174mm, the distance between one end of the fourth side edge close to the second end and the bisecting plane is 212mm, and the distance between one end of the fourth side edge far away from the second end and the bisecting plane is 254mm;

the second side is close to the one end of first end with the distance of first outer flange is 42mm, the fourth side is close to the one end of second end with the distance of second outer flange is 42mm.

Preferably, the rim is further provided with an air tap mounting hole, and the air tap mounting hole is formed in the outer circumferential surface of the rim and is close to the first end of the circular groove.

Preferably, the wheel rims are symmetrically arranged by taking the bisection plane as a central plane.

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 transition section, the second transition section, the third transition section and the fourth transition section 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: the utility model discloses a rim is through the material thickness that increases each changeover portion department for the dangerous section intensity of each changeover portion of rim improves, and the life of rim can promote. Meanwhile, the material thickness of the two sides of each transition section of the rim is controlled to be smaller than that of each transition section, 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 partial sectional view of a rim according to an embodiment of the present invention.

Description of reference numerals:

circular groove 100

First side 101

Second side 102

Third side 103

Fourth side 104

First transition section 111

Second transition section 112

Third transition section 113

Fourth transition section 114

First connection segment 121

First arc segment 122

Second connection section 131

Second arc segment 132

First arc transition 1121

Third connecting section 1122

Second arcuate transition section 1141

Fourth connecting section 1142

Air faucet mounting hole 200

Detailed Description

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

As shown in fig. 1-2, a rim with a width L of 20.00 × 22.5 is provided for the embodiment of the present invention ₁ 552 +/-9 mm and the external diameter phi of the rim ₁ 596.9 +/-1.4 mm, a circular groove 100 arranged along the circumferential direction of the outer circumferential surface of the rim is arranged in the middle of the outer circumferential surface of the rim, the width of the circular groove 100 is 348 +/-5 mm, and the inner diameter phi of the rim at the circular groove 100 is ₂ Is composed of

Specifically, as shown in fig. 2, the circular 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 which extend obliquely 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 transition section 111, the first side edge 101 is connected with the second side edge 102 through a second transition section 112, and the second side edge 102 is connected with the first outer flange; one side of the second end is provided with a third side 103, a fourth side 104 and a second outer flange which extend obliquely upwards in sequence from the direction far away from the first end, the second end is connected with the second side 102 through a third transition section 113, the third side 103 and the fourth side 104 are connected through a fourth transition section 114, and the fourth side 104 is connected with the second outer flange.

In this embodiment, the material thickness of each of the first transition section 111, the second transition section 112, the third transition section 113, and the fourth transition section 114 is greater than the material thickness of each of the two sides of each transition section. The first transition section 111, the second transition section 112, the third transition section 113, and the fourth transition section 114 are all arc-shaped. Here, the first transition section 111 is taken as an example: as shown in fig. 2, two sides of the first transition section 111 are respectively a cylinder where the circular groove 100 is located and the first side 101, and the material thickness of the first transition section 111 is thicker than the cylinder and the first side 101 at the position of the circular groove 100. The structural strength of the rim at the corner is improved, and the whole weight of the rim is kept at a relatively low level, so that the purposes of reducing weight, lowering cost and the like are achieved while the whole strength of the rim is ensured.

This rim is through the material thickness that increases each changeover portion for the dangerous section intensity of each changeover portion of rim improves, and the life of rim can promote. Meanwhile, the material thickness of the two sides of each transition section of the rim is controlled to be smaller than that of each transition section, 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 includes a first connection section 121 and a first arc-shaped section 122, the first connection section 121 is connected to the second side edge 102, and the material thickness of the first arc-shaped section 122 is greater than that of the first connection section 121, so that the strength at the first arc-shaped section 122 of the first outer flange is reinforced. The second outer flange includes a second connection section 131 and a second arc-shaped section 132, the second connection section 131 is connected with the fourth side edge 104, and the material thickness of the second arc-shaped section 132 is greater than that of the second connection section 131, so that the strength at the second arc-shaped section 132132 of the second outer flange is also enhanced.

In the embodiment, as shown in fig. 2, the first outer flange and the second outer flange have the same size, the width of the first outer flange and the width of the second outer flange are both 22 ± 2mm, and the arc radius of the first arc-shaped section 122 and the arc radius of the second arc-shaped section 132 are both 12.7mm.

In this embodiment, the inclination angle of the first side 101 is greater than that of the second side 102, the inclination angle of the third side 103 is less than that of the fourth side 104, and the inclination angles of the second side 102 and the fourth side 104 are both 20 °.

The second transition section 112 includes a first arc-shaped transition section 1121 and a third connecting section 1122, the first arc-shaped transition section 1121 is connected to the first side edge 101, and the third connecting section 1122 is connected to the second side edge 102. The fourth transition section 114 includes a second arc transition section 1141 and a fourth connection section 1142, the second arc transition section 1141 is connected to the third side edge 103, and the fourth connection section 1142 is connected to the fourth side edge 104.

As shown in fig. 2, the rim has a median plane (position of a dotted line in the figure) in the width direction, the distance between the first end and the median plane is 174 ± 5mm, the distance between the second end and the median plane is 174 ± 5mm, the distance between the end of the fourth side 104 close to the second end and the median plane is 212 ± 5mm, and the distance between the end of the fourth side 104 far from the second end and the median plane is 254 ± 5mm. The end of the second side 102 near the first end is 42mm from the first outer flange and the end of the fourth side 104 near the second end is 42mm from the second outer flange. The wheel rims are symmetrically arranged by taking the middle division plane as a central plane.

As shown in fig. 1, the rim is further provided with an air faucet mounting hole 200, and the air faucet mounting hole 200 is formed on the outer circumferential surface of the rim near the first end of the circular groove 100. The nozzle mounting hole 200 has a diameter of 15.7mm.

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 side 101, the second side 102, the third side 103 and the fourth side 104 is reduced by 0.5-3.5mm compared with the initial thickness, and the material thickness of the first transition section 111, the second transition section 112, the third transition section 113 and the fourth transition section 114 is increased by 0.5-1.5mm compared with the initial thickness of the material. By thinning the material at each side portion, the thinned material is supplied to each transition section for the purpose of achieving a thickening of the thickness of the material of the transition section.

The rim among the prior art usually adopts alloy steel material, because alloy steel material plasticity is not good, easy fracture, and the rejection rate is high, consequently can not adopt the mode of each 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 transition section, and the bench test can reach 100 ten thousand times, which is far higher than the 36 ten thousand test standards 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 section department, makes the material extrusion of other positions department move the bodiness to clearance department (transition section department promptly), makes the dangerous section intensity of each transition section department improve 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 one vertical rolling machine, so that the production process is simplified, the production speed is improved, and more importantly, the existing process of stretching, bending and deformation is changed into the process of forging, extruding and deformation 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.

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

1. A rim, characterized in that the width of the rim is 552mm, the outer diameter of the rim is 596.9mm, the middle part of the outer circumferential surface of the rim is provided with an annular groove circumferentially arranged along the outer circumferential surface of the rim, the width of the annular groove is 348mm, the inner diameter of the rim at the annular groove is 495mm, and the annular groove is provided with a first end and a second end; one side of the first end is provided with a first side edge, a second side edge and a first outer flange 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 through a first transition section, the first side edge is connected with the second side edge through a second transition section, and the second side edge is connected with the first outer flange; the first end is provided with a first transition section, the second end is provided with a second transition section, the first transition section, the second transition section, the third transition section and the fourth transition section are respectively connected with the first outer flange and the second outer flange, and the material thickness of the first transition section, the second transition section, the third transition section and the fourth transition section is respectively larger than that of two sides of each transition section.

2. The wheel rim of claim 1, wherein the first outer flange includes a first connecting segment and a first arcuate segment, the first connecting segment being connected to the second side edge, the first arcuate segment having a material thickness greater than a material thickness of the first connecting segment.

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

4. The wheel rim of claim 3, wherein the first outer flange and the second outer flange each have a width of 22mm, and the first arcuate segment and the second arcuate segment each have an arc radius of 12.7mm.

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 less than the angle of inclination of the fourth side, and the angle of inclination of the second side and the angle of inclination of the fourth side are both 20 °.

6. The wheel rim of claim 5, wherein the second transition segment includes a first arcuate transition segment and a third connecting segment, the first arcuate transition segment being connected to the first side edge and the third connecting segment being connected to the second side edge;

7. The rim of claim 1, wherein the rim has a bisecting plane in the width direction, the first end is 174mm from the bisecting plane, the second end is 174mm from the bisecting plane, the end of the fourth side adjacent to the second end is 212mm from the bisecting plane, and the end of the fourth side distal from the second end is 254mm from the bisecting plane;

the distance between one end of the second side edge close to the first end and the first outer flange is 42mm, and the distance between one end of the fourth side edge close to the second end and the second outer flange is 42mm.

8. The rim of claim 1, further comprising an air nozzle mounting hole formed in the rim at a location on the outer peripheral surface of the rim proximate the first end of the annular recess.

9. The wheel rim of claim 7, wherein the wheel rim is symmetrically arranged about the bisecting plane.

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, second, third and fourth sides have a material thickness reduced by 0.5 to 3.5mm compared to the initial thickness, and the first, second, third and fourth transitions have a material thickness increased by 0.5 to 1.5mm compared to the initial thickness of the material.