Turnover safety supporting device of mine underground dumper

Abstract

The utility model belongs to the technical field of mining machinery, and relates to a turnover safety supporting device of a mine underground dumper. Comprising a triangular supporting frame located between a carriage and a chassis girder; the triangular support frame has a folded state and an unfolded state; one end of the hinge base is fixed on the bottom edge of the triangular support frame, and the other end is provided with a through hole; the wrench switch is fixedly mounted on the chassis girder, and a fixing hole is formed in the surface of the wrench switch; the rotating shaft simultaneously penetrates through the through hole and the fixing hole, so that the hinge base and the wrench switch can be connected in a relatively rotating manner; when the hinge base and the wrench switch rotate relatively, the triangular supporting frame is switched between the folded state and the unfolded state. The utility model not only provides technical guarantee for the safe operation of the underground mine dump truck, but also has the advantages of simple structure, low manufacturing cost and convenience and rapidness in operation and use.

Description

Technical Field

[0001] This utility model belongs to the field of mining machinery technology, specifically relating to a safety support device for a mine underground dump truck that can be tilted. Background Technology

[0002] In underground mining operations, dump trucks are the core equipment for transferring ore materials. Due to the high intensity of the work and the complex environment, dump trucks need to frequently raise their cargo boxes for inspection, cleaning, or maintenance. Current technology commonly uses wooden supports and overhead crane suspension to temporarily secure the raised cargo box. However, wooden supports are susceptible to uneven ground and moisture, resulting in poor support stability. After long-term use, they are prone to wear and cracking, posing a significant safety hazard of the cargo box falling unexpectedly. Suspension devices cannot be carried on the truck and are easily affected by the confined space in mines, leading to low operational flexibility and difficulty in meeting daily maintenance needs. Utility Model Content

[0003] To address the aforementioned issues, this utility model proposes a reversible safety support device based on the principle of triangular stability. Through mechanical structural innovation, the support device is integrated with the chassis of the dump truck, enabling rapid deployment and storage, and providing technical support for the safe operation of dump trucks in underground mines.

[0004] Specifically, this application provides a safety support device for a mine underground dump truck that can be tilted. It has the characteristics of simple structure, easy operation and low cost. It can also effectively solve the safety support problem of the dump truck body in the lifting state and avoid the safety hazard of abnormal descent of the truck body during maintenance.

[0005] To achieve the above-mentioned technical objectives, the technical solution adopted in this application is a tiltable safety support device for underground dump trucks in mines, wherein the dump truck includes a cargo box and a chassis beam; comprising:

[0006] A triangular support frame is located between the vehicle body and the chassis beam; the triangular support frame has a retracted state and an extended state; in the retracted state, the triangular support frame is attached parallel to the chassis beam; in the extended state, the triangular support frame is perpendicular to the chassis beam and supports the vehicle body.

[0007] The hinge base is fixed at one end to the bottom edge of the triangular support frame, and has a through hole at the other end; the bottom edge is defined as the side of the triangular support frame that is attached to the chassis beam in the unfolded state;

[0008] The wrench switch is fixedly installed on the chassis beam, and its surface has fixing holes;

[0009] A rotating shaft passes through both the through hole and the fixing hole to connect the hinge base and the wrench switch in a rotatable manner; when the hinge base and the wrench switch rotate relative to each other, the triangular support frame switches between a retracted state and an extended state.

[0010] As an improved technical solution of this application, the triangular support frame is an isosceles right triangle structure; the hinge base is fixed on one right-angled side of the triangular support frame.

[0011] As an improved technical solution of this application, the triangular support frame is made of three rectangular high-hardness alloy steel plates welded together, and the welded area is covered with an epoxy anti-corrosion coating.

[0012] As an improved technical solution of this application, the three sides of the triangular support frame are also provided with adjustable telescopic rods.

[0013] As an improved technical solution of this application, the contact surface between the hinge base and the chassis beam is provided with anti-slip serrated texture.

[0014] As an improved technical solution of this application, the rotating shaft is made of zinc-nickel alloy steel.

[0015] As an improved technical solution of this application, the rotating shaft is a telescopic structure.

[0016] As an improved technical solution of this application, the surface of the wrench switch is provided with a nitrile rubber coating layer.

[0017] Beneficial effects

[0018] 1. Stable structure

[0019] This utility model's safety support device, through its integrated welded design of the triangular support frame and hinge base, completely eliminates the gap problem of traditional prefabricated structures, significantly improving overall torsional strength and deformation resistance. The triangular support frame is made of high-hardness alloy steel, whose material properties ensure excellent toughness and fatigue resistance even in high-humidity and highly corrosive underground environments, making it less prone to brittle fracture or stress cracking over long-term use. The rotating shaft is made of zinc-nickel alloy with a rust-proof surface treatment, resisting corrosion from underground mud, acidic water vapor, and other corrosive media, greatly extending the device's service life. Furthermore, the welded integrated structure maintains a stable connection even under conditions of dump truck bumps, vibrations, or emergency braking, avoiding the risk of support failure due to loosening and providing continuous and reliable rigid support for the truck body.

[0020] 2. Adjustability and adaptability

[0021] The triangular support frame integrates an adjustable telescopic rod, whose length can be adjusted via a threaded or sliding rail structure. This allows for precise adaptation to differences in the gap between the chassis beams and the vehicle body of different models, avoiding support deviations or uneven stress caused by size mismatches. The rotating shaft adopts a sleeve-type telescopic design, ensuring the stability of the hinged structure while adapting to the installation requirements of chassis beams of different widths. For example, for narrow-body models (smaller beam spacing), the length of the rotating shaft can be shortened for compact installation; for wide-body models (larger beam spacing), the rotating shaft can be lengthened to ensure symmetrical arrangement of the support frame.

[0022] 3. Excellent anti-slip performance

[0023] The contact surface between the hinge base and the chassis beam has a serrated pattern, which significantly increases friction through mechanical engagement. This effectively prevents slippage or loosening of the device, even in oily, muddy, or wet environments, ensuring the support structure remains in a fixed position. The operating handle of the wrench switch is covered with a rubber layer, whose oil-resistant and wear-resistant properties resist downhole oil corrosion. Simultaneously, by increasing the coefficient of friction between the palm and the handle, it prevents accidental operation due to hand slippage.

[0024] In summary, this application utilizes a triangular support frame to support the chassis beam and the carriage. Based on the stability of triangles, this support structure also has strong stability. At the same time, the structural design of the device in this application allows the triangular support frame to have both an extended and a retracted state, making it easy to carry and space-saving, and convenient to use. Furthermore, the device structure of this application is simple, low in cost, and conducive to widespread promotion. Attached Figure Description

[0025] The accompanying drawings are not intended to be drawn to scale. In the drawings, each identical or nearly identical component shown in the various figures may be denoted by the same reference numeral. For clarity, not every component is labeled in each figure. Embodiments of various aspects of the invention will now be described by way of example and with reference to the accompanying drawings, wherein:

[0026] Figure 1 A schematic diagram of the device in its unfolded state is shown;

[0027] Figure 2 A three-dimensional structural diagram of this device is shown;

[0028] Figure 3 The front view of this device is shown.

[0029] In the diagram, 1 is the dump truck body, 2 is the triangular support frame, 3 is the hinge base, 4 is the rotating shaft, 5 is the wrench switch, and 6 is the chassis beam. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model without creative effort are within the scope of protection of this utility model. Unless otherwise defined, the technical or scientific terms used herein should have the ordinary meaning understood by those skilled in the art to which this utility model pertains.

[0031] This utility model proposes a flip-up safety support device based on the principle of triangular stability. Through mechanical structural innovation, the support device is integrated with the chassis of the dump truck, enabling rapid deployment and storage, and providing technical support for the safe operation of dump trucks in underground mines.

[0032] like Figure 1-3 As shown, a tiltable safety support device for an underground mining dump truck is disclosed. The dump truck includes a cargo box and a chassis beam.

[0033] A triangular support frame 2 is located between the truck body and the chassis beam 6. The triangular support frame 2 has a retracted state and an extended state. In the retracted state, the triangular support frame 2 is attached parallel to the chassis beam 6. In the extended state, the triangular support frame 2 is perpendicular to the chassis beam 6 and supports the truck body (dump truck body 1).

[0034] The hinge base 3 is fixed at one end to the bottom edge of the triangular support frame 2, and has a through hole at the other end; the bottom edge is defined as one side of the triangular support frame that is attached to the chassis beam in the unfolded state.

[0035] The wrench switch 5 is fixedly installed on the chassis beam 6, and its surface is provided with fixing holes;

[0036] A rotating shaft 4 passes through both the through hole and the fixing hole to connect the hinge base 3 and the wrench switch 5 in a way that allows them to rotate relative to each other. The hinge base 3 and the wrench switch 5 use the rotating shaft 4 as the center of rotation. The lever principle of the wrench switch 5 is used to apply torque, which drives the hinge base 3 to rotate the triangular support frame 2 around the rotating shaft from 0 to 90 degrees, so that the triangular support frame 2 can switch between the folded state and the unfolded state.

[0037] As an improved technical solution of this application, the triangular support frame 2 has an isosceles right triangle structure; the hinge base 3 is fixed on one right-angled side of the triangular support frame 2. The purpose is to utilize the geometric properties of the isosceles right triangle to evenly distribute the supporting force, avoid stress concentration, and at the same time reduce material redundancy and lower the overall weight of the device.

[0038] As an improved technical solution of this application, the triangular support frame 2 is made of three rectangular high-hardness alloy steel plates welded together, and the welded area is covered with an epoxy anti-corrosion coating. The purpose is to ensure the support strength by using high-hardness alloy steel plates, to enhance torsional resistance by using rectangular cross-sections, and to isolate groundwater from contact with the weld seams by the epoxy coating, thus preventing structural corrosion caused by the humid environment in the mine.

[0039] As an improved technical solution in this application, the three sides of the triangular support frame 2 are also equipped with adjustable telescopic rods. The purpose is to adapt to chassis beams of different widths and improve the versatility of the device.

[0040] As an improved technical solution in this application, the contact surface between the hinge base 3 and the chassis beam 6 is provided with anti-slip serrated texture. The purpose is to increase the static friction coefficient and prevent the support device from displacing under vibration conditions, especially to prevent the support frame from accidentally slipping off during loading and unloading on slopes.

[0041] As an improved technical solution in this application, the rotating shaft 4 is made of zinc-nickel alloy steel. The purpose is to utilize the ultra-high hardness and corrosion resistance of zinc-nickel alloy to ensure the service life of the rotating shaft 4 under frequent rotation and acidic mining environments.

[0042] As an improved technical solution of this application, the rotating shaft 4 is a telescopic structure. The purpose is to make the length of the rotating shaft 4 adjustable, which facilitates the installation and positioning of the equipment in narrow spaces and allows for partial replacement when the rotating shaft 4 is damaged.

[0043] As an improved technical solution of this application, the surface of the wrench switch 5 is covered with a nitrile rubber coating. The purpose is to improve operating comfort by utilizing the oil resistance and elasticity of nitrile rubber, while increasing the friction of hand contact.

[0044] Example 1

[0045] like Figure 1-3 As shown, a tiltable safety support device for underground mining dump trucks is based on a welded integral structure of a triangular support frame 2 and a hinge base 3, combined with a tilting action controlled by a wrench switch 5, achieving stable support and rapid storage of the truck body in a raised state. The following details its implementation method in conjunction with the specific structure, installation, and operation procedures:

[0046] The device includes two symmetrically arranged triangular support frames 2, which are welded together from three pieces of high-hardness alloy steel to form a stable triangular structure. The bottom edge of the triangular support frame 2 is welded to the hinge base 3 to form a whole, and the hinge base 3 is fixed to both sides of the dump truck chassis beam 6 by high-strength bolts. The contact surface between the hinge base 3 and the chassis beam 6 is provided with anti-slip serrated texture to increase friction and prevent displacement of the device under vibration or tilting conditions. The rotating shaft 4 is made of corrosion-resistant zinc-nickel alloy and its surface is treated with anti-rust to ensure reliability under long-term use. The length of the rotating shaft 4 can be adjusted according to the width of the chassis beam of different models through a telescopic structure, thus adapting to various dump truck models. The wrench switch 5 is connected to the hinge base 3 by a hinge, and its surface is covered with a rubber layer to improve anti-slip and comfort during operation. The operator can drive the triangular support frame 2 to rotate around the rotating shaft 4 by turning the wrench switch 5.

[0047] When the dump truck body 1 (cargo box) needs to be lifted for inspection or maintenance, the operator first lifts the dump truck body 1 to a position forming a certain angle with the chassis beam 6. Then, the operator turns the lever switch 5 to the unfolding direction, driving the triangular support frame 2 to rotate around the rotating shaft 4 towards the angled area between the dump truck body 1 and the chassis beam 6. After being fully unfolded, the triangular support frame 2 inserts into the space between the bottom of the cargo box and the chassis beam 6, utilizing the geometric stability of the triangular structure to form a rigid physical support. At this time, the top edge of the triangular support frame 2 is in close contact with the bottom of the cargo box, and the bottom edge is fixed to the chassis beam by the anti-slip serrated texture of the hinge base 3 and high-strength bolts, ensuring that the support device will not slip or loosen under stress. During this process, the telescopic structure of the rotating shaft 4 can be finely adjusted according to the actual width of the chassis beam, allowing the triangular support frame 2 to precisely adapt to the installation requirements of different vehicle models. After the support is completed, the operator can safely carry out inspection work under the cargo box, completely eliminating the risk of the cargo box accidentally falling in traditional wooden stick support or suspension methods.

[0048] After maintenance is completed, the operator activates the wrench switch, causing the triangular support frame 2 to rotate laterally around the rotating shaft 4 towards the chassis beam 6. Once reset, the triangular support frame 2 fits perfectly against the installation position of the chassis beam 6, maintaining a sufficient safety distance from the bottom of the vehicle body to avoid interfering with its normal lifting and lowering. The entire rotation process requires no additional tools and can be completed by a single person in a short time, significantly improving work efficiency. Furthermore, when folded, the device is flush with the vehicle's profile, not increasing the vehicle's external dimensions during operation, making it suitable for the confined working environment of underground mines.

[0049] In practical applications, the device, symmetrically installed on both sides of the chassis beam, ensures a uniform distribution of support force, avoiding eccentric loading problems caused by unilateral force application. The combination of anti-slip serrated texture and high-strength bolts further enhances the stability of the device under complex working conditions.

[0050] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Those skilled in the art to which this invention pertains can make various modifications and refinements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of this invention shall be determined by the claims.

Claims

1. A tiltable safety support device for an underground mining dump truck, the dump truck comprising a cargo box and a chassis beam; characterized in that, include: A triangular support frame is located between the carriage and the chassis beam; the triangular support frame has a stowed state and an unfolded state. In the stowed state, the triangular support frame is attached parallel to the chassis beam; in the unfolded state, the triangular support frame is perpendicular to the chassis beam and supports the vehicle body. The hinge base is fixed at one end to the bottom edge of the triangular support frame, and has a through hole at the other end; the bottom edge is defined as one side of the triangular support frame that is attached to the chassis beam in the unfolded state; The wrench switch is fixedly installed on the chassis beam, and its surface has fixing holes; A rotating shaft passes through both the through hole and the fixing hole to connect the hinge base and the wrench switch in a rotatable manner; when the hinge base and the wrench switch rotate relative to each other, the triangular support frame switches between a retracted state and an extended state.

2. The safety support device for a tiltable underground dump truck in a mine according to claim 1, characterized in that, The triangular support frame has an isosceles right triangle structure; the hinge base is fixed on one right-angled side of the triangular support frame.

3. The safety support device for a tiltable underground mine dump truck according to claim 1, characterized in that, The triangular support frame is made of three rectangular high-hardness alloy steel plates welded together, and the welded area is covered with an epoxy anti-corrosion coating.

4. The safety support device for a tiltable underground mine dump truck according to claim 1, characterized in that, The triangular support frame is also equipped with adjustable telescopic rods inside its three sides.

5. A safety support device for a tiltable underground mine dump truck according to claim 1, characterized in that, The contact surface between the hinge base and the chassis beam is provided with anti-slip serrated texture.

6. A safety support device for a tiltable underground mine dump truck according to claim 1, characterized in that, The rotating shaft is made of zinc-nickel alloy steel.

7. A safety support device for a tiltable underground mine dump truck according to claim 1, characterized in that, The rotating shaft has a telescopic structure.

8. A safety support device for a tiltable underground mine dump truck according to claim 1, characterized in that, The surface of the wrench switch is covered with a nitrile rubber coating.

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