Front hub and front wheel of mining dump truck and front wheel ventilation and heat dissipation method

Abstract

The invention discloses a front hub of a mining dump truck, which comprises inclined ribs, a base part and a ring part, the base part and the ring part are coaxially arranged and are positioned on the same central axis, the ring part is positioned on the outer side of the base part, a plurality of inclined ribs are connected between the base part and the ring part and are uniformly distributed along the circumferential direction, and the inclined ribs are in a twisted shape along the radial direction. The invention further discloses the front hub of the mining dump truck, the front wheel and a front wheel ventilation and heat dissipation method. The invention further discloses the front wheel and a front wheel ventilation and heat dissipation method. Forced convection cooling is formed for the brake calipers and the brake disc, and heat accumulation caused by braking is avoided.

Description

Technical Field

[0001] This invention belongs to the field of mining vehicle technology, specifically relating to a front wheel hub, front wheel, and front wheel ventilation and heat dissipation method for a mining dump truck. Background Technology

[0002] Mining dump trucks are large transport trucks used in open-pit mines to transport earth, rock, and mineral materials. They are heavy, have high load capacities, and operate in harsh environments with poor road conditions. The front axle of a mining dump truck simultaneously serves as a load-bearing, braking, steering, and traveling axle. The requirements for the front axle and its connecting structures are to maintain the stability and reliability of the dump truck even under such demanding operating conditions.

[0003] Non-independent front axles have good structural rigidity and strength, making them a feasible solution for mining dump trucks. However, the connection structure between the front axle and the chassis affects the stress and posture of the front axle during dump truck operation, and even the stability of the dump truck and the reliability of the entire vehicle.

[0004] The present invention aims to solve the technical problems existing in the above-mentioned situation. Summary of the Invention

[0005] The purpose of this invention is to provide a ventilation and heat dissipation method for the front wheel hub, front wheel, and front wheel of a mining dump truck, which avoids the accumulation of heat during braking by forming forced convection cooling of the brake caliper and brake disc.

[0006] To achieve the above objectives, the technical solution used in this invention is:

[0007] The front wheel hub of the mining dump truck includes: a diagonal rib, a base, and a ring. The base and the ring are coaxially arranged and located on the same central axis. The ring is located outside the base. Multiple diagonal ribs are connected between the base and the ring and are evenly distributed circumferentially. The diagonal ribs are twisted in the radial direction.

[0008] Furthermore, the ring part has a ring-shaped structure, and multiple threaded holes for mounting the wheel rim are evenly distributed around the right end face of the ring part. The third bolt is installed in the third threaded hole.

[0009] Furthermore, the right end face of the ring and the right end face of the base are located on the same plane.

[0010] Furthermore, the inclined rib forms an angle with its plane of rotation, and the angle between the top of the inclined rib and the plane of rotation is smaller than the angle between the root of the inclined rib and the plane of rotation.

[0011] Furthermore, the base is a cylindrical structure that extends in a ring shape along the circumference. The base has a first seat hole for installing the first bearing on the right side of the inner cavity and a second seat hole for installing the second bearing on the left side.

[0012] Furthermore, a flange for mounting a brake disc is provided on the left side of the outer peripheral surface of the base. Multiple second threaded holes are evenly distributed along the circumference of the flange, and second bolts are installed in the second threaded holes.

[0013] Furthermore, the right end face of the base is provided with an end cap threaded hole for mounting the end cap, and the inner cavity of the base is trumpet-shaped.

[0014] The front wheel of the mining dump truck includes: a rim, a front axle, a brake disc, a support frame, and a brake caliper. The inner wall of the rim body has circumferentially extending spokes, with multiple through holes evenly distributed circumferentially. A third bolt passes through the through holes of the spokes and connects to a third threaded hole. The right side of the front axle is a stepped shaft, with multiple first threaded holes on its middle end face. The right end face of the stepped shaft has a shaft end threaded hole, which is used to fix a limit plate via an end bolt. The outer side of the limit plate presses against a first bearing. The brake disc has a center hole in its center, through which the brake disc... Multiple brake disc through holes are evenly distributed circumferentially on the outer side of the hole. The base passes through the central through hole. The second bolt passes through the brake disc through hole and connects to the second threaded hole of the flange. The lower part of the support frame is provided with multiple connecting through holes. The inner side of the multiple connecting through holes is provided with support frame through holes. The upper part is provided with fixing through holes. The support frame through holes are fitted onto the stepped shaft. The first bolt passes through the connecting through holes and connects to the first threaded hole. The left end face of the brake caliper is provided with a fourth threaded hole. The fourth bolt passes through the fixing through hole and connects to the fourth threaded hole. The upper part of the brake disc is located in the bayonet of the lower part of the brake caliper.

[0015] Preferably, the front wheel of the mining dump truck is characterized in that a limiting plate is connected to the right end of the stepped axle, and the limiting plate is located on the right side of the first bearing.

[0016] Front wheel ventilation and heat dissipation methods include:

[0017] The front axle drives the front wheel hub and base to rotate around the central axis, and the base drives the diagonal rib to rotate;

[0018] When braking is applied, the brake caliper clamps the brake disc, and the friction between the brake caliper's friction pads and the brake disc generates heat; the radially twisted diagonal ribs create forced convection within the space enclosed by the front wheel hub, front axle, and wheel rim.

[0019] The flowing airflow provides forced convection cooling to the brake calipers and brake discs, preventing heat buildup during braking.

[0020] The technical effects of this invention include:

[0021] According to the above scheme, during the rotation of the front wheel hub of the mining dump truck, the inclined ribs continuously push the air to form an axial airflow, which forces the brake caliper and brake disc to be cooled by convection, avoiding the accumulation of heat during braking, making the working temperature of the brake caliper relatively stable, and improving the safety of the dump truck.

[0022] Because the diagonal rib forms a certain angle with its plane of rotation, when the front wheel hub rotates, the side of the diagonal rib pushes the air to one side along the axis, thereby creating a pressure difference between the left and right sides of the front wheel hub, promoting airflow, and providing forced convection cooling for the brake calipers and brake discs. Moreover, the diagonal rib is twisted radially, so that it operates at the most favorable angle of attack in each radial section, improving ventilation efficiency. Attached Figure Description

[0023] Figure 1 This is a side view of the mining dump truck in this invention;

[0024] Figure 2 This is a partial isometric sectional view of the front wheel hub mounting assembly of the mining dump truck in this invention;

[0025] Figure 3 This is a cross-sectional view of the front wheel hub mounting assembly of the mining dump truck in this invention;

[0026] Figure 4 This is a front view of the front wheel hub 2 in this invention;

[0027] Figure 5 yes Figure 4 Cross-sectional view along the AA direction;

[0028] Figure 6 This is a simplified front view of the diagonal rib in this invention;

[0029] Figure 7 yes Figure 6 KK-direction view.

[0030] 0-Mining dump truck;

[0031] 1-Rim; 11-Rim body; 11a-Spoke; 12-Third bolt (fastening component);

[0032] 2-Front wheel hub,

[0033] 21-Diagonal reinforcement, 21a-Top, 21b-Root

[0034] 22-base, 22a-first seat hole, 22b-second seat hole, 22c-flange, 22ba-second threaded hole;

[0035] 23-Ring portion, 23a-Third threaded hole;

[0036] 3-Front axle; 4-Brake caliper; 5-Brake disc; 6-Support bracket;

[0037] 7-Fourth bolt (fastening component); 8-Second bolt (fastening component); 9-First bolt (fastening component);

[0038] 10-Bearing;

[0039] X - Central axis, R - Hub rotation direction, R' - Plane of rotation of the diagonal rib

[0040] S1 - Angle between the top of the inclined rib and the plane of rotation R'; S2 - Angle between the root of the inclined rib and the plane of rotation R'.

[0041] W-Airflow. Detailed Implementation

[0042] The following description fully illustrates specific embodiments of the invention to enable those skilled in the art to practice and reproduce them.

[0043] In the following description, the direction along the central axis will be called the axial direction. The tangent direction at any point of rotation about the central axis will be called the circumferential direction. The direction that intersects the central axis and is perpendicular to it will be called the radial direction. The left side in the attached diagram will be called the left side, and the right side will be called the right side.

[0044] like Figure 1 The image shown is a side view of the mining dump truck 0 in this invention.

[0045] Mining dump trucks typically use a rear-wheel drive configuration with the front wheels as driven wheels. This implementation plan only uses one side of the front wheel hub as an example for illustration.

[0046] like Figure 2 The image shown is a partial isometric sectional view of the front wheel hub mounting assembly of the mining dump truck in this invention. Figure 3 The figure shown is a cross-sectional view of the front wheel hub mounting assembly of the mining dump truck in this invention.

[0047] The rim 1 is connected to the front hub 2, and the front hub 2 is supported on the front axle 3 in a rotatable manner by means of the bearing 10.

[0048] The front wheel hub 2 includes: a diagonal rib 21, a base 22, and a ring 23; the base 22 and the ring 23 are coaxially arranged, the ring 23 is located outside the base 22, and the diagonal rib 21 connects the base 22 and the ring 23.

[0049] The base 22 is a cylindrical structure that extends in a ring shape along the circumference. The base 22 has a first mounting hole 22a for mounting the bearing 10 on the right side of the inner cavity and a second mounting hole 22b on the left side.

[0050] The inner cavity of the base 22 is trumpet-shaped. The right end face of the base 22 is provided with an end cap threaded hole for mounting the end cap.

[0051] like Figure 4 The image shown is a front view of the front wheel hub 2 in this invention; as shown... Figure 5 As shown, is Figure 4 A cross-sectional view along the AA direction. (e.g.) Figure 6The image shown is a simplified front view of the inclined rib 21 in this invention; as shown... Figure 7 As shown, is Figure 6 KK-direction view.

[0052] A second bearing is installed on the left side of the inner cavity of the base 22, and a first bearing (bearing 10 includes a first bearing and a second bearing) is installed on the right side. The first bearing is installed in the first seat hole 22a, and the second bearing is installed in the second seat hole 22b. A limit plate is connected to the right end of the stepped shaft, and the limit plate is located to the right of the first bearing.

[0053] A flange 22c for mounting the brake disc 5 is provided on the left side of the outer peripheral surface of the base 22. A plurality of second threaded holes 22ba are evenly distributed along the circumference of the flange 22b. The second bolt 8 passes through the brake disc 5 and connects to the second threaded holes 22ba to fix the brake disc 5 on the flange 22b.

[0054] The ring portion 23 has a ring-shaped structure. The right end face of the ring portion 23 is on the same plane as the right end face of the base portion 22. The right end face of the ring portion 23 has a plurality of threaded holes 23a for mounting the rim 1 evenly distributed around its circumference. The third bolt 12 is installed in the third threaded hole 23a.

[0055] The diagonal rib 21 connects the base 22 and the ring 23 and is evenly distributed circumferentially. The diagonal rib 21 has a certain angle with the central axis X, that is, the diagonal rib 21 has a certain angle with its rotation plane R'. Moreover, the diagonal rib 21 has a twisted shape in the radial direction, that is, the angle S1 between the top rib 21a and the rotation plane R' is smaller than the angle S2 between the root rib 21b and the rotation plane R'.

[0056] like Figure 3 As shown, the rim 1 is connected to the ring 23 of the front hub 2.

[0057] The inner wall of the rim body 11 on the inner side of the rim 1 is provided with a spoke 11a extending in the circumferential direction, and the spoke 11a has a plurality of through holes evenly distributed in the circumferential direction.

[0058] The third bolt 12 passes through the through hole on the spoke 11a and connects to the third threaded hole 23a on the end face of the ring 23, so that the rim body 11 is integrally fixedly connected to the front hub 2, and correspondingly, the rim 1 is integrally fixedly connected to the front hub 2.

[0059] A central hole is provided in the center of the brake disc 5. Multiple brake disc through holes are evenly distributed circumferentially on the outer side of the central hole. The base 22 passes through the central hole. The second bolt 8 passes through the through hole on the brake disc 5 and connects to the second threaded hole 22ba of the flange 22c, thus integrally fixing the brake disc 5 to the base 22 of the front wheel hub 2. When the front wheel hub 2 rotates, the brake disc 5 rotates synchronously with the front wheel hub 2.

[0060] The right side of the front axle 3 is a stepped shaft, and the right end face of the stepped shaft is provided with a threaded hole. A limit plate is fixed to the threaded hole by an end bolt, and the outer side of the limit plate presses against the first bearing. The middle end face of the front axle 3 is provided with multiple first threaded holes.

[0061] The lower part of the support frame 6 is provided with multiple connecting through holes, the inner side of which is provided with support frame through holes, and the upper part is provided with fixing through holes.

[0062] The support frame 6 is fitted onto the stepped shaft through the support frame through hole. The first bolt 9 passes through the connecting through hole of the support frame 6 and connects to the first threaded hole of the front axle 3, thus connecting the support frame 6 to the front axle 3. The support frame 6 is integrally and fixedly connected to the front axle 3 by means of the first bolt 9.

[0063] The left end face of the brake caliper 4 is provided with a fourth threaded hole. The fourth bolt 7 passes through the fixing through hole of the support frame 6 and is connected to the fourth threaded hole. The upper part of the brake disc 5 is located in the bayonet at the lower part of the brake caliper 4. The brake caliper 4 is integrally fixed to the support frame 6 by means of the fourth bolt 7. Correspondingly, the brake caliper 4 is integrally fixed to the front axle 3. The front axle 3 is a stationary component during braking, the brake caliper 4 is a stationary component, and the front wheel hub 2 and brake disc 5 are rotating components.

[0064] When braking is applied, the brake caliper 4 clamps the brake disc 5. The friction pads of the brake caliper 4 rub against the brake disc 5. Since the brake disc 5 is integrally fixedly connected to the front wheel hub 2, the brake disc 5 drags the front wheel hub 2 in the opposite direction to achieve the braking effect. The heat generated during braking will accumulate in the space enclosed by the front wheel hub 2, the front axle 3, and the wheel rim 11.

[0065] As the front wheel hub 2 rotates around its central axis X along the R direction, the diagonal rib 21 continuously pushes air to form an axial airflow. This airflow W passes through the space formed by the wheel rim 1, the front wheel hub 2, and the front axle 3. In other words, the flowing airflow cools the brake caliper 4 and brake disc 5, preventing heat buildup during braking and improving the reliability of the brake caliper and the safety of the dump truck. Moreover, this process requires no additional power source; it can be achieved simply by rotating the front wheel hub 2, making the structure simple and easy to implement.

[0066] The specific steps for front wheel ventilation and heat dissipation are as follows:

[0067] 1. The front axle 3 drives the front wheel hub 2 and the base 22 to rotate around the central axis X, and the base 22 drives the diagonal rib 21 to rotate;

[0068] 2. When braking is applied, the brake caliper 4 clamps the brake disc 5, and the friction between the friction pads of the brake caliper 4 and the brake disc 5 generates heat; the radially twisted diagonal ribs 21 form forced convection in the space enclosed by the front hub 2, the front axle 3, and the wheel rim 11.

[0069] 3. The flowing airflow provides forced convection cooling to the brake caliper 4 and brake disc 5, preventing heat buildup during braking.

[0070] The terminology used in this invention is descriptive and exemplary, not restrictive. Since this invention can be embodied in many forms without departing from the spirit or essence of the technical solution, it should be understood that the above embodiments are not limited to any of the foregoing details, but should be interpreted broadly within the spirit and scope defined by the appended claims. Therefore, all variations and modifications falling within the scope of the claims or their equivalents should be covered by the appended claims.

Claims

1. A front wheel hub for a mining dump truck, characterized in that, include: The base, ring, and diagonal ribs are arranged coaxially on the same central axis. The ring is located outside the base. Multiple diagonal ribs are connected between the base and the ring and are evenly distributed circumferentially. The diagonal ribs are twisted radially.

2. The front wheel hub of the mining dump truck as described in claim 1, characterized in that, The ring part has a ring-shaped structure, and multiple threaded holes for mounting the wheel rim are evenly distributed around the right end face of the ring part. The third bolt is installed in the third threaded hole.

3. The front wheel hub of the mining dump truck as described in claim 1, characterized in that, The right end face of the ring and the right end face of the base are on the same plane.

4. The front wheel hub of the mining dump truck as described in claim 4, characterized in that, The inclined reinforcement forms an angle with its plane of rotation, and the angle between the top of the inclined reinforcement and the plane of rotation is smaller than the angle between the root of the inclined reinforcement and the plane of rotation.

5. The front wheel hub of the mining dump truck as described in claim 1, characterized in that, The base is a cylindrical structure that extends in a ring shape along the circumference. The base has a first seat hole for installing the first bearing on the right side of the inner cavity and a second seat hole for installing the second bearing on the left side.

6. The front wheel hub of the mining dump truck as described in claim 1, characterized in that, The outer peripheral surface of the base has a flange for mounting the brake disc on the left side. The flange has multiple second threaded holes evenly distributed along the circumference, and the second threaded holes are used to install second bolts.

7. The front wheel hub of the mining dump truck as described in claim 1, characterized in that, The right end face of the base is provided with an end cap threaded hole for mounting the end cap, and the inner cavity of the base is flared.

8. A front wheel of a mining dump truck using the front wheel hub according to any one of claims 1-7, comprising: The wheel rim, front axle, brake disc, support frame, and brake caliper are characterized in that: the inner wall of the rim body on the inner side of the rim is provided with spokes extending circumferentially, and multiple through holes are evenly distributed along the circumferential direction on the spokes; a third bolt passes through the through holes of the spokes and connects to a third threaded hole; the right side of the front axle is a stepped shaft, and the middle end face of the front axle is provided with multiple first threaded holes; the right end face of the stepped shaft is provided with a shaft end threaded hole, and a limit plate is fixed to the shaft end threaded hole by an end bolt; the outer side of the limit plate presses against a first bearing; the brake disc is provided with a brake disc center hole in the middle, and the outer side of the brake disc through hole... Multiple brake disc through holes are evenly distributed circumferentially, with the base passing through the central through hole. A second bolt passes through the brake disc through hole and connects to the second threaded hole of the flange. The lower part of the support frame has multiple connecting through holes, and the inner side of the multiple connecting through holes has a support frame through hole. The upper part has a fixing through hole, and the support frame through hole is fitted onto the stepped shaft. A first bolt passes through the connecting through hole and connects to the first threaded hole. The left end face of the brake caliper has a fourth threaded hole, and a fourth bolt passes through the fixing through hole and connects to the fourth threaded hole. The upper part of the brake disc is located in the bayonet at the lower part of the brake caliper.

9. The front wheel of the mining dump truck as described in claim 7, characterized in that, A limiting plate is connected to the right end of the stepped shaft, and the limiting plate is located to the right of the first bearing.

10. The front wheel ventilation and heat dissipation method as described in claim 8, characterized in that, include: The front axle drives the front wheel hub and base to rotate around the central axis, and the base drives the diagonal rib to rotate; When braking is applied, the brake caliper clamps the brake disc, and the friction between the brake caliper's friction pads and the brake disc generates heat; the radially twisted diagonal ribs create forced convection within the space enclosed by the front wheel hub, front axle, and wheel rim. The flowing airflow provides forced convection cooling to the brake calipers and brake discs, preventing heat buildup during braking.

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