A back collision prevention device for a mine dump truck

Abstract

The utility model belongs to the vehicle anti -collision technical field, concretely relates to a mine dump truck reverse anti -collision device, including support frame, install in the tail of mine dump truck, rotating shaft, rotatablely installed on support frame, its axial direction is parallel with the width direction of mine dump truck, contact plate, locate in the bottom of rotating shaft, induction arm, install on rotating shaft, normally closed proximity switch, install on support frame, its induction end corresponds with induction arm, the utility model can automatically cut off power when the vehicle reverses to will happen collision, avoided the collision accident caused by improper reverse operation, effectively improved vehicle unloading safety, reduced equipment loss, improved operation efficiency, and simple structure, easy to manufacture and installation, low in production cost, still adopt the mode that mechanical drive and proximity switch induction combine, confirm the collision through physical contact, its accuracy is high, is not easy to be interfered with environment, has guaranteed the reliability of collision detection.

Description

Technical Field

[0001] This utility model belongs to the field of vehicle anti-collision technology, specifically relating to an anti-collision device for reversing mining dump trucks. Background Technology

[0002] In mining and stripping operations, unloading is a critical link in material handling. Due to the involvement of high drops, heavy loads, and complex terrain, it has become a high-risk area for safety accidents. According to statistics, accidents in the unloading process account for a large proportion of the total number of accidents in mines, mainly manifested as equipment loss of control and collisions, material landslides and burials, which seriously threaten the lives of workers and cause significant property losses.

[0003] During unloading operations, mining dump trucks need to reverse to the retaining wall and stop precisely to complete the material unloading. However, in actual operation, due to various factors such as the slope of the mine road, differences in driver skill, and blind spots, mining dump trucks often cannot stop in time. If a collision occurs during reversing, it is highly likely to damage critical components such as the chassis, body structure, and engine, or even cause a fall, posing a significant threat to the safety of personnel and equipment.

[0004] Traditional preventative measures mainly rely on manual judgment of vehicle parking positions based on experience, while adding anti-collision beams to deal with potential collisions. However, manual operation is easily interfered with, and anti-collision beams can only mitigate impacts but cannot prevent collisions, so their actual effectiveness is limited. Utility Model Content

[0005] The purpose of this utility model is to provide a reversing anti-collision device for mining dump trucks, which solves the technical problem that mining dump trucks in the prior art cannot avoid collisions when reversing.

[0006] This utility model discloses a reversing anti-collision device for mining dump trucks, comprising:

[0007] The support frame is installed at the rear of the mining dump truck;

[0008] A rotating shaft is rotatably mounted on the support frame, and its axial direction is parallel to the width direction of the mining dump truck.

[0009] A contact plate is located at the bottom of the rotating shaft;

[0010] The sensing arm is mounted on the rotating shaft;

[0011] A normally closed proximity switch is mounted on the support frame, with its sensing end corresponding to the sensing arm.

[0012] This application can automatically cut off power when a vehicle is reversing and a collision is imminent, thereby avoiding collision accidents caused by improper reversing operations, effectively improving vehicle unloading safety, reducing equipment wear and tear, and increasing work efficiency. Moreover, its structure is simple, easy to manufacture and install, and has low production costs. It also adopts a combination of mechanical transmission and proximity switch sensing to confirm the occurrence of a collision through physical contact, which has high accuracy, is not easily affected by environmental interference, and ensures the reliability of collision detection.

[0013] Based on the above technical solution, the solution of this application can be further improved as follows:

[0014] Preferably, the support frame has a receiving cavity with its opening facing downwards; the rotating shaft is rotatably disposed within the receiving cavity; this solution improves structural compactness, protects the components inside the cavity, and provides support at both ends of the rotating shaft, thereby reducing stress concentration, enhancing structural strength, and ensuring the rotational stability of the rotating shaft.

[0015] Preferably, the receiving cavity has shaft holes on both sides that are adapted to the rotating shaft; this solution enables precise positioning and stable support of the rotating shaft, and can also guide the rotating shaft to rotate accurately, thereby ensuring smooth rotation and facilitating installation and disassembly.

[0016] Preferably, the shaft hole is interference-fitted with the rotating shaft; this solution can effectively counteract the rotation caused by inertia, thereby significantly improving the reliability of collision detection.

[0017] Preferably, a limiting block is provided at one end of the rotating shaft, and the sensing arm is provided at the other end; this solution serves to limit the axial movement of the rotating shaft, thereby improving the structural stability of the device.

[0018] Preferably, the normally closed proximity switch is inserted into one side of the support frame, and the signal end of the normally closed proximity switch extends into the receiving cavity. The top wall of the receiving cavity has a wire-passing hole. This solution ensures installation stability, facilitates disassembly and installation, is convenient for inspection and maintenance, improves structural compactness, protects the connection area with the wire harness, extends the service life of the equipment, and facilitates the wire harness to extend into the receiving cavity, thereby avoiding tangled cables and improving the stability of signal transmission.

[0019] Preferably, the contact plate comprises:

[0020] A vertical arm is arranged in a vertical direction, and its top end is fixedly connected to the rotation axis;

[0021] A horizontal arm is arranged in a horizontal direction and fixedly connected to the bottom end of the vertical arm. This solution utilizes a T-shaped structure design to ensure synchronous rotation of the rotating shaft and the contact plate, and expands the obstacle detection range, thereby improving the reliability and stability of the detection.

[0022] Preferably, the vertical arm has a U-shaped cross-section, and the horizontal arm is a long strip plate. This design improves rigidity, disperses stress during collisions, avoids local deformation, reduces material usage, lightens the weight of the vertical arm, increases the contact area, and avoids excessive stress concentration in certain areas.

[0023] Through the above technical solution, this utility model achieves the following beneficial effects:

[0024] 1. This application can automatically cut off power when the vehicle is reversing and a collision is about to occur, thereby avoiding collision accidents caused by improper reversing operation, effectively improving vehicle unloading safety, reducing equipment wear and tear, and improving work efficiency. Moreover, its structure is simple, easy to manufacture and install, and has low production cost. It also adopts a combination of mechanical transmission and proximity switch sensing to confirm the occurrence of collision through physical contact, which is highly accurate, not easily affected by environmental interference, and ensures the reliability of collision detection.

[0025] 2. This application improves the reliability and stability of the detection by designing the contact plate as a T-shaped structure formed by the combination of a vertical arm and a horizontal arm, which ensures the synchronous rotation of the rotating shaft and the contact plate and expands the obstacle detection range. Attached Figure Description

[0026] 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.

[0027] Figure 1 This is a front view of the anti-collision device for reversing mining dump trucks according to a specific embodiment of this application;

[0028] Figure 2 for Figure 1 The diagram shows the installation of the anti-collision device for reversing a mining dump truck.

[0029] Figure 3 for Figure 1 The diagram shows the structure of the contact plate in the anti-collision device for the reversing mine dump truck.

[0030] Figure 4 for Figure 1The diagram shows the structural schematic of the support frame in the reversing anti-collision device of the mining dump truck.

[0031] Explanation of reference numerals in the attached figures:

[0032] 1. Support frame; 101. Receiving cavity; 102. Shaft hole; 103. Wire hole; 2. Rotating shaft; 3. Contact plate; 31. Vertical arm; 32. Horizontal arm; 4. Sensing arm; 5. Normally closed proximity switch; 6. Limit block. Detailed Implementation

[0033] 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.

[0034] The terms “first” and “second” 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. Therefore, a feature defined as “first” or “second” may explicitly or implicitly include one or more of the stated features.

[0035] In this application, unless otherwise expressly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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.

[0036] To better understand the above technical solutions, the following will provide a detailed description of the technical solutions in conjunction with the accompanying drawings and specific embodiments.

[0037] Example:

[0038] like Figure 1 and Figure 2 As shown in the embodiment of this application, a reversing anti-collision device for mining dump trucks is disclosed. It can automatically cut off the power when the vehicle is reversing and approaching a dangerous area, so as to avoid collision accidents caused by improper reversing operation and effectively improve the safety of unloading the vehicle. Its specific structure includes: support frame 1, rotating shaft 2, contact plate 3, sensing arm 4 and normally closed proximity switch 5.

[0039] Support frame 1 is installed at the rear of the mining dump truck, specifically at the center of the rear side of the tail beam. It serves as a basic support structure to provide installation for other components and can be fixed by welding.

[0040] The rotating shaft 2 is rotatably mounted on the support frame 1, and its axis is parallel to the width direction of the mining dump truck. This allows the contact plate 3 to more effectively drive the rotating shaft 2 to rotate when subjected to a collision force from the vehicle's length direction, i.e., the reversing direction, thereby improving the device's sensitivity to reversing collisions.

[0041] The contact plate 3 is located at the bottom of the rotating shaft 2. When the mining dump truck reverses to approach the obstacle, the contact plate 3 will first collide with the obstacle, which will cause the rotating shaft 2 to rotate around its axis.

[0042] The sensing arm 4 is mounted on the rotating shaft 2 and can rotate together with the rotating shaft 2. Its position change can be sensed by the normally closed proximity switch 5.

[0043] A normally closed proximity switch 5 is mounted on the support frame 1, and its sensing end corresponds to the sensing arm 4. It is used to send a signal to the vehicle's control system (ECU) when the sensing arm 4 moves forward from its sensing end. The control system then activates corresponding warning measures (such as sounding an alarm or illuminating a warning light) and controls the vehicle to stop reversing, thereby achieving the collision avoidance function.

[0044] For example, after receiving a collision signal, the vehicle's control system (ECU) will switch to remote throttle function, control the throttle to 0, make the engine idle, and pull down the throttle pedal travel signal to disable the throttle pedal, thereby achieving the fuel cut-off function.

[0045] It should be noted that the vehicle's control system (ECU) only takes appropriate action on the collision signal emitted by the normally closed proximity switch 5 during the reversing process; while in the parking or forward-moving state, even if a collision signal is received, no appropriate action is taken, thereby avoiding false triggering.

[0046] Understandably, the normally closed proximity switch 5 only emits a collision signal when the sensing arm 4 moves forward from its sensing end. Therefore, compared with the normally open type, it can effectively reduce the occurrence of false triggering due to external environmental interference, thus ensuring the safety of the normal reversing process.

[0047] This invention can automatically cut off power when a vehicle is reversing and a collision is imminent, thereby avoiding collision accidents caused by improper reversing operations, effectively improving vehicle unloading safety, reducing equipment wear and tear, and increasing work efficiency. Moreover, its structure is simple, easy to manufacture and install, and has low production costs. It also adopts a combination of mechanical transmission and proximity switch sensing to confirm the occurrence of a collision through physical contact, which is highly accurate, not easily affected by environmental interference, and ensures the reliability of collision detection.

[0048] In some embodiments, such as Figure 2 and Figure 4As shown, the support frame 1 has a receiving cavity 101 with its opening facing downwards; the rotating shaft 2 is rotatably disposed within the receiving cavity 101.

[0049] For example, the support frame 1 is concave, which has high structural strength and is easy to manufacture and process, but it is not limited to this and can also be U-shaped, C-shaped, etc., without specific limitation.

[0050] The above design improves the structural compactness, protects the internal components, and provides end-to-end support for the rotating shaft 2, thereby reducing stress concentration, enhancing structural strength, and ensuring the rotational stability of the rotating shaft 2.

[0051] Based on the above embodiments, such as Figure 4 As shown, the cavity 101 has shaft holes 102 on both sides that are adapted to the rotating shaft 2, so as to achieve precise positioning and stable support for the rotating shaft 2, and guide the rotating shaft 2 to rotate accurately, thereby ensuring the smoothness of rotation and facilitating installation and disassembly.

[0052] In this embodiment, the shaft hole 102 is interference-fitted with the rotating shaft 2 to allow the rotating shaft 2 to withstand a certain degree of frictional resistance when it rotates.

[0053] Understandably, in the scenario of starting and stopping a mining dump truck, the vehicle's inertia can easily cause the contact plate 3 to swing and drive the rotating shaft 2 to rotate. The aforementioned frictional resistance can effectively counteract this rotation caused by inertia, thereby significantly improving the reliability of collision detection.

[0054] In this embodiment, as Figure 1 As shown, a limiting block 6 is provided at one end of the rotating shaft 2, and a sensing arm 4 is provided at the other end.

[0055] For example, the limiting block 6 and the rotating shaft 2 can be bolted, thereby reducing the difficulty of manufacturing the device and improving manufacturing efficiency.

[0056] The above design serves to limit the axial movement of the rotating shaft 2, thereby improving the structural stability of the device.

[0057] In this embodiment, as Figure 1 As shown, the normally closed proximity switch 5 is inserted into one side of the support frame 1, and the signal end of the normally closed proximity switch 5 extends into the receiving cavity 101. A wire hole 103 is provided on the top wall of the receiving cavity 101.

[0058] The aforementioned insertion design ensures the stable installation of the normally closed proximity switch 5, and makes it easy to disassemble and install, facilitating inspection and maintenance. Its signal end extends into the receiving cavity 101, improving the structural compactness and protecting the connection area with the wire harness, thereby extending the service life of the equipment. Furthermore, by opening the wire passage hole 103, it is easy for the wire harness to extend into the receiving cavity 101, thus avoiding the occurrence of messy and tangled cables and improving the stability of signal transmission.

[0059] In some embodiments, such as Figures 1-3 As shown, the contact plate 3 includes:

[0060] The vertical arm 31 is arranged in the vertical direction and its top end is fixedly connected to the rotating shaft 2, which serves as a bridge and support, and enables the rotating shaft 2 to rotate in the expected manner.

[0061] The horizontal arm 32 is arranged horizontally and fixedly connected to the bottom of the vertical arm 31 to expand the contact range with obstacles and improve the detection sensitivity.

[0062] The T-shaped structure design combining the vertical arm 31 and the horizontal arm 32 ensures the synchronous rotation of the rotating shaft 2 and the contact plate 3 through the vertical arm 31, and expands the obstacle detection range by utilizing the horizontal arm 32, thereby improving the reliability and stability of the detection.

[0063] In this embodiment, as Figure 3 As shown, the vertical arm 31 has a U-shaped cross-section, forming a reinforcing rib structure that significantly improves rigidity. It can disperse stress during collision, avoid local deformation, and reduce the amount of material used, thus reducing the weight of the vertical arm 31. The horizontal arm 32 is a long strip plate, which increases the contact area and avoids excessive stress concentration in local areas.

[0064] Further explanation regarding this application:

[0065] Normal state (no collision): When the mining dump truck is reversing and does not encounter any obstacles, the contact plate 3 hangs down naturally under the action of gravity; at this time, the sensing arm 4 is located directly in front of the sensing end of the normally closed proximity switch 5, so the normally closed proximity switch 5 senses the target and remains in the open state.

[0066] Triggered state (collision occurs): When the vehicle reverses and approaches an obstacle, the contact plate 3 at the rear of the vehicle first collides with the obstacle. The contact plate 3 is pushed by the force to rotate the rotating shaft 2 around its axis. The rotating shaft 2 drives the sensing arm 4 to move together, so that the sensing arm 4 moves away from the front of the sensing end of the normally closed proximity switch 5. The normally closed proximity switch 5 can no longer sense the target and will send a signal to the vehicle's control system (ECU). The control system will then activate the corresponding warning measures (such as sounding an alarm or illuminating a warning light) and control the vehicle to stop reversing, thereby realizing the collision avoidance function.

[0067] 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.

[0068] In the description of this specification, the references to terms such as "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 the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, 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 different embodiments or examples.

[0069] 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 reversing anti-collision device for mining dump trucks, characterized in that, include: The support frame is installed at the rear of the mining dump truck; A rotating shaft is rotatably mounted on the support frame, and its axial direction is parallel to the width direction of the mining dump truck. A contact plate is located at the bottom of the rotating shaft; The sensing arm is mounted on the rotating shaft; A normally closed proximity switch is mounted on the support frame, with its sensing end corresponding to the sensing arm.

2. The anti-collision device for reversing mining dump trucks according to claim 1, characterized in that, The support frame has a receiving cavity with its opening facing downwards; the rotating shaft is rotatably disposed within the receiving cavity.

3. The anti-collision device for reversing mining dump trucks according to claim 2, characterized in that, Both sides of the receiving cavity are provided with shaft holes that are adapted to the rotating shaft.

4. The anti-collision device for reversing mining dump trucks according to claim 3, characterized in that, The shaft hole is interference-fitted with the rotating shaft.

5. The anti-collision device for reversing mining dump trucks according to claim 3, characterized in that, One end of the rotating shaft is provided with a limiting block, and the other end is provided with the sensing arm.

6. The anti-collision device for reversing mining dump trucks according to claim 5, characterized in that, The normally closed proximity switch is inserted into one side of the support frame, and the signal end of the normally closed proximity switch extends into the receiving cavity. A wire hole is provided on the top wall of the receiving cavity.

7. The anti-collision device for reversing mining dump trucks according to claim 1, characterized in that, The contact plate includes: A vertical arm is arranged in a vertical direction, and its top end is fixedly connected to the rotation axis; A horizontal arm is arranged in a horizontal direction and is fixedly connected to the bottom end of the vertical arm.

8. The anti-collision device for reversing mining dump trucks according to claim 7, characterized in that, The vertical arm has a U-shaped cross-section, and the horizontal arm is a long strip plate.

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