A stone discharger for a mine dump truck
By installing stone-discharging rods at the middle and rear axle positions of the mining dump truck, and using steel pipe welded assemblies and hinged seats to provide fixing points, the problem of existing stone-discharging devices being only located at the rear axle position and lacking fixing points is solved, thus achieving effective stone discharging and safe maintenance operations.
Patent Information
- Application Number
- CN202522035676.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-22
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-09-22
AI Technical Summary
The existing mining dump trucks have stone ejectors located only at the rear axle position without any temporary fixing points, which results in the need for manpower and poses safety hazards when replacing the rear axle brake drum and tires.
Stone-discharging rods are installed at the middle and rear axles of the mining dump truck. They are fixed by welding the stone-discharging steel pipe assembly and the hinge seat, providing temporary fixing points. The stone-discharging rods on the middle axle are mounted on the frame and do not rotate with the cargo box. The stone-discharging rods on the rear axle are hinged to the cargo box and are fixed by stone-discharging hooks.
It effectively removes stones from the middle and rear axles, avoiding manpower consumption and safety hazards, and improving maintenance efficiency and safety.
Smart Images
Figure CN224676063U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of dump truck technology, specifically relating to a stone ejector for a mining dump truck. Background Technology
[0002] Off-highway mining dump trucks typically operate in open-pit mines where road conditions are harsh and uneven, with a large amount of gravel and sand. Most mining dump trucks use a single-sided dual-tire rear axle to ensure sufficient load-bearing capacity; however, the gap between the two tires can easily cause stones and other debris to get stuck between them. For example, in some large open-pit coal mines and metal mines, mining dump trucks can easily get stones from the road surface caught between the tires while driving.
[0003] If stones and other debris stuck between tires are not removed in time, they will accumulate and wear down the tires, even puncture them, causing economic losses and potentially leading to safety accidents. They may also damage surrounding components. Most dump trucks are equipped with stone deflectors. During vehicle operation, the deflector blades rotate back and forth to knock away stones and other debris stuck between the tires, or the blades collide with the wheel rims during rotation, causing the debris to vibrate and fall off. However, the stone deflector is located on the dump truck's cargo box and only corresponds to the rear axle.
[0004] In addition, when the vehicle needs to replace the brake drums and tires of the middle and rear axles, the stone ejector has no fixed point. At this time, one person needs to lift the stone ejector rod backward or find a stick on site to support the stone ejector rod, which consumes more manpower and poses safety hazards. Utility Model Content
[0005] This utility model provides a stone ejector for a mining dump truck, which solves the technical problem that the existing stone ejectors for mining dump trucks are only located at the rear axle and do not have a temporary fixing point. This utility model includes: a pair of middle axle stone-discharging rods, respectively disposed on both sides of the middle axle of a mining dump truck, and each of the middle axle stone-discharging rods can extend into the wheel sets on both sides of the middle axle, and the upper end of the middle axle stone-discharging rod is connected to the frame axle of the mining dump truck. A pair of rear axle stone-discharging rods are respectively provided on both sides of the rear axle of the mining dump truck, and each rear axle stone-discharging rod can extend into the wheel set on both sides of the rear axle. The upper end of the rear axle stone-discharging rod is connected to the cargo box axle of the mining dump truck.
[0006] This utility model features stone-discharging rods installed on both the middle and rear axles of the mining dump truck, which can discharge debris between the wheels on both sides of the middle and rear axles. Furthermore, the stone-discharging rods on the middle axle are mounted on the frame and will not move up and down with the rotation of the cargo box, thus not affecting the reset of the stone-discharging rods when the cargo box falls.
[0007] Furthermore: a stone-discharging steel pipe welding assembly is provided between the middle bridge stone-discharging rod and the vehicle frame, the stone-discharging steel pipe welding assembly includes: a base plate, which is provided on the side of the vehicle frame; A steel pipe, one end of which is mounted on the base plate; A pin is rotatably disposed at the other end of the steel pipe, with the front end of the pin extending out of the steel pipe; The upper end of the middle bridge stone-removing rod is sleeved on the pin shaft; Nuts are screwed onto the outer end of the pin to fasten the middle bridge stone-discharging rod plate; A hinge seat is provided between the rear axle stone ejector plate and the cargo box. The upper end of the rear axle stone ejector plate is axially connected to the hinge seat. The beneficial effect of this step is that the middle axle stone ejector plate extends out and falls into the tire gap through the welded assembly of the stone ejector steel pipe.
[0008] Furthermore: the cargo box is provided with stone discharge hooks at the positions corresponding to the tail ends of the middle axle stone discharge rod and the tail ends of the rear axle stone discharge rod, and the stone discharge hooks include: hook hinge seats, which are provided on the bottom surface of the cargo box; The hook is pivotally connected to the hook hinge seat; The rotating surfaces of the middle axle and rear axle stone-discharging rods are the same as the length direction of the cargo box, and the rotating surface of the stone-discharging hook is the same as the width direction of the cargo box. The beneficial effect of this step is that the stone-discharging hook provides a temporary fixing point, which can be used to fix the middle axle and rear axle stone-discharging rods during vehicle maintenance.
[0009] Furthermore: the length of the middle bridge stone-discharging rod is greater than the vertical distance from the stone-discharging steel pipe welded assembly to the middle bridge axis, and less than the distance from the stone-discharging steel pipe welded assembly to the outer edge of the rear bridge; The length of the rear axle stone-removing rod is greater than the vertical distance from the hinge seat to the rear axle axis, but less than the vertical distance from the hinge seat to the bottom edge of the rear axle tire. The beneficial effect of this step is that it ensures that the middle axle stone-removing rod and the rear axle stone-removing rod can achieve the stone-removing effect without interfering with the vehicle's movement.
[0010] Furthermore, the thickness of the middle bridge runner and the rear bridge runner is 16±2mm and the width is 90±5mm. The beneficial effect of this step is that the middle bridge runner and the rear bridge runner have good structural strength.
[0011] Furthermore, since the center of gravity of the middle bridge runner and the rear bridge runner is at the midpoint or rear section, the beneficial effect of this step is that it allows the middle bridge runner and the rear bridge runner to have good rotational performance.
[0012] Furthermore, the mining dump truck is equipped with limiting blocks at the positions corresponding to the middle axle stone discharge rod and the rear axle stone discharge rod. The beneficial effect of this step is that the limiting blocks can reduce the impact of the middle axle stone discharge rod and the rear axle stone discharge rod on the middle axle and the rear axle.
[0013] The beneficial effects of this utility model are: 1. This utility model provides stone-discharging rods at both the middle and rear axle positions of the mining dump truck, and the stone-discharging rods of the middle axle are mounted on the frame, so that the lifting and lowering of the cargo box will not affect the reset of the stone-discharging rods of the middle axle. 2. This utility model can also be used when vehicles are being repaired, such as when replacing the front and rear axle brake drums or tires. Instead of using manpower to lift the stone ejector rod or finding sticks on site to support it, the stone ejector rod can be lifted backward and hooked with the stone ejector hook. This helps to improve efficiency and ensure safety. Attached Figure Description
[0014] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0015] Figure 1 A schematic diagram of the structure of a stone ejector for a mining dump truck provided by this utility model; Figure 2 A schematic diagram of the structure of the middle axle stone-discharging rod and the welded assembly of the stone-discharging steel pipe of the stone-discharging device of a mining dump truck provided by this utility model; Figure 3 A perspective view of the stone ejector hook in the stone ejector of a mining dump truck provided by this utility model.
[0016] Figure label: 1-Middle axle stone ejector plate; 2-Rear axle stone ejector plate; 3-Chassis; 4-Cargo box; 5-Middle axle; 6-Rear axle; 7-Stone ejector hook; 11-Base plate; 12-Steel pipe; 13-Pin; 14-Nut; 71-Hook hinge seat; 72-Hook. Detailed Implementation
[0017] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and should not be construed as limiting the scope of protection of the present invention. It should be noted that, unless otherwise stated, the technical or scientific terms used in this application shall have the ordinary meaning as understood by one of ordinary skill in the art to which this utility model pertains.
[0018] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0019] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly defined.
[0020] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0021] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.
[0022] Implementation of this application, for example Figures 1-3 As shown, this application provides a stone ejector for a mining dump truck.
[0023] This application includes: a pair of middle bridge stone-discharging rods 1, respectively disposed on both sides of the middle bridge 5 of a mining dump truck, and each of the middle bridge stone-discharging rods 1 can extend into the wheel set on both sides of the middle bridge 5, and the upper end of the middle bridge stone-discharging rod 1 is axled to the frame 3 of the mining dump truck. A pair of rear axle stone discharge rods 2 are respectively provided on both sides of the rear axle 6 of the mining dump truck, and each rear axle stone discharge rod 2 can extend into the wheel set on both sides of the rear axle 6. The upper end of the rear axle stone discharge rod 2 is axle connected to the cargo box 4 of the mining dump truck.
[0024] During use, as the vehicle moves forward, the wheels rotate counterclockwise. As the wheels roll over the road surface, stones and other debris become lodged in the outer edge of the gap between the two wheels. With the rotation of the wheel assembly, the middle axle stone-expelling rod 1 and the rear axle stone-expelling rod 2 insert themselves between the axle and the debris. The axle then presses against the middle axle stone-expelling rod 1 and / or the rear axle stone-expelling rod 2, preventing the rods from rotating and thus holding the debris in place until it is forced out of the wheel assembly gap, achieving the purpose of stone expulsion. Furthermore, the middle axle stone-expelling rod 1 is mounted on the frame 3 and will not move up or down with the rotation of the cargo box 4, thus not affecting its reset when the cargo box 4 falls. As for the rear axle stone-expelling rod 2, it is close to the axle of the cargo box 4, and the rotation of the cargo box 4 will not significantly increase the vertical displacement of the rear axle stone-expelling rod 2, thus not affecting its reset.
[0025] Based on the above technical solution, in order to make the position of the middle bridge stone-removing rod 1 correspond to the position of the wheel set, it is necessary to provide a stone-removing steel pipe welding assembly between the middle bridge stone-removing rod 1 and the frame 3. The position of the middle bridge stone-removing rod 1 is extended by the stone-removing steel pipe welding assembly. The stone-removing steel pipe welding assembly includes: a base plate 11, which is provided on the side of the frame 3. The steel pipe 12 has one end on the base plate 11. In order to ensure the connection strength between the steel pipe 12 and the base plate 11, multiple reinforcing ribs can be provided around the steel pipe 12. Pin 13 is rotatably disposed at the other end of the steel pipe 12. For example, pin 13 and steel pipe 12 can be connected by bearing, and the front end of pin 13 extends out of steel pipe 12. The upper end of the middle bridge stone-removing rod 1 is sleeved on the pin 13; Nut 14 is screwed onto the outer end of the pin 13 to fasten the middle bridge stone-discharging rod 1. To further ensure the fastening effect, a cotter pin or the like can also be provided between nut 14 and pin 13. A hinge seat is provided between the rear axle stone guide plate 2 and the cargo box 4, and the upper end of the rear axle stone guide plate 2 is axially connected to the hinge seat.
[0026] Based on the above technical solution, the cargo box 4 is provided with stone discharge hooks 7 at the positions corresponding to the tail ends of the middle axle stone discharge rod 1 and the rear axle stone discharge rod 2. The stone discharge hooks 7 include: hook hinge seats 71, which are provided on the bottom surface of the cargo box 4. Hook 72 is axially connected to hook hinge seat 71; The rotating surfaces of the middle axle stone-discharging rod 1 and the rear axle stone-discharging rod 2 are in the same direction as the length of the cargo box 4, and the rotating surface of the stone-discharging hook 7 is in the same direction as the width of the cargo box 4. The two are perpendicular to each other, making them easier to pick up and put down. The stone-discharging hook 7 provides a temporary fixing point for the rods, which can be used to fix the middle axle stone-discharging rod 1 and the rear axle stone-discharging rod 2 during vehicle maintenance.
[0027] Based on the above technical solution, the length of the middle bridge stone-discharging rod 1 is greater than the vertical distance from the stone-discharging steel pipe welded assembly to the axis of the middle bridge 5, and less than the distance from the stone-discharging steel pipe welded assembly to the outer edge of the rear bridge 6. The length of the rear axle stone-removing rod 2 is greater than the vertical distance from the hinge seat to the axle center of the rear axle 6, and less than the vertical distance from the hinge seat to the bottom edge of the tire of the rear axle 6, so as to ensure that the middle axle stone-removing rod 1 and the rear axle stone-removing rod 2 can achieve the stone-removing effect without interfering with the movement of the vehicle.
[0028] Based on the above technical solution, the thickness of the middle bridge runner plate 1 and the rear bridge runner plate 2 is 16±2mm and the width is 90±5mm. The middle bridge runner plate 1 and the rear bridge runner plate 2 have good structural strength, are resistant to bending and are not easily deformed.
[0029] Based on the above technical solution, the center of gravity of the middle axle runner plate 1 and the rear axle runner plate 2 is at the midpoint or rear section, that is, the middle axle runner plate 1 and the rear axle runner plate 2 are regular shapes, or shapes that are smaller at the top and larger at the bottom, such as teardrop shapes; this allows the middle axle runner plate 1 and the rear axle runner plate 2 to have a good rotational tendency, making it easier to return to its original position, and making it easier to maintain a vertical state when there are no debris between the wheelsets, thus reducing the swing amplitude.
[0030] Based on the above technical solution, the mining dump truck is equipped with limiting blocks at the positions corresponding to the middle axle stone discharge rod 1 and the rear axle stone discharge rod 2. The limiting blocks are generally located on the steel pipe and hinge seat of the stone discharger steel pipe welded assembly, and are all located at the front end. Under normal circumstances, the side of the limiting block is on the same vertical line as the outer edge of the axle near the rod. In this way, the limiting blocks can reduce the impact of the middle axle stone discharge rod 1 and the rear axle stone discharge rod 2 on the middle axle 5 and the rear axle 6.
[0031] In the above, the middle axle stone-discharging rod 1 is not affected by the lifting and rotation of the cargo box 4, and together with the rear axle stone-discharging rod 2, it achieves the purpose of stone discharging.
[0032] Numerous specific details are set forth in this specification. However, it will be understood that embodiments of this invention may be practiced without these specific details. In some instances, well-known methods, structures, and techniques have not been shown in detail so as not to obscure the understanding of this specification. In the description of this specification, references to the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Furthermore, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of the different embodiments or examples.
[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model.
Claims
1. A stone-discharging device for a mining dump truck, characterized in that, include: A pair of middle axle stone-discharging rods are respectively installed on both sides of the middle axle of the mining dump truck, and each of the middle axle stone-discharging rods can extend into the wheel set on both sides of the middle axle. The upper end of the middle axle stone-discharging rod is connected to the frame axle of the mining dump truck. A pair of rear axle stone-discharging rods are respectively provided on both sides of the rear axle of the mining dump truck, and each rear axle stone-discharging rod can extend into the wheel set on both sides of the rear axle. The upper end of the rear axle stone-discharging rod is connected to the cargo box axle of the mining dump truck.
2. The stone ejector for a mining dump truck according to claim 1, characterized in that, A stone-discharging steel pipe welding assembly is provided between the middle bridge stone-discharging rod and the vehicle frame. The stone-discharging steel pipe welding assembly includes: a base plate, which is provided on the side of the vehicle frame; A steel pipe, one end of which is mounted on the base plate; A pin is rotatably disposed at the other end of the steel pipe, with the front end of the pin extending out of the steel pipe; The upper end of the middle bridge stone-removing rod is sleeved on the pin shaft; Nuts are screwed onto the outer end of the pin to fasten the middle bridge stone-discharging rod plate; A hinge seat is provided between the rear axle stone ejector plate and the cargo box, and the upper end of the rear axle stone ejector plate is axially connected to the hinge seat.
3. The stone ejector for a mining dump truck according to claim 1, characterized in that, The cargo box is equipped with stone-discharging hooks at the positions corresponding to the tail ends of the middle axle stone-discharging rod and the rear axle stone-discharging rod. Each stone-discharging hook includes a hook hinge seat, which is located on the bottom surface of the cargo box. The hook is pivotally connected to the hook hinge seat; The rotating surfaces of the middle axle stone-discharging rod and the rear axle stone-discharging rod are in the same direction as the length of the cargo box, and the rotating surface of the stone-discharging hook is in the same direction as the width of the cargo box.
4. The stone ejector for a mining dump truck according to claim 2, characterized in that, The length of the middle bridge stone-discharging rod is greater than the vertical distance from the stone-discharging steel pipe welded assembly to the middle bridge axis, and less than the distance from the stone-discharging steel pipe welded assembly to the outer edge of the rear bridge. The length of the rear axle ejector bar is greater than the vertical distance from the hinge seat to the rear axle axis, but less than the vertical distance from the hinge seat to the bottom edge of the rear axle tire.
5. The stone ejector for a mining dump truck according to claim 1, 2, 3 or 4, characterized in that, The thickness of the middle bridge runner and the rear bridge runner is 16±2mm, and the width is 90±5mm.
6. The stone ejector for a mining dump truck according to claim 5, characterized in that, The center of gravity of the middle bridge runner and the rear bridge runner is at the midpoint or the rear section.
7. The stone ejector for a mining dump truck according to claim 6, characterized in that, The mining dump truck is equipped with limiting blocks at the positions corresponding to the middle axle stone discharge rod and the rear axle stone discharge rod.