Dumper overturning angle detection device and dumper

Abstract

The utility model relates to a dumper overturning angle detection device and a dumper, and belongs to the field of engineering machinery. According to the technical scheme, the dumper overturning angle detection device comprises a fixed base, a rotating base and an angle sensor, the fixed base and the rotating base are hinged to each other, a stator of the angle sensor is fixedly connected with one of the fixed base and the rotating base, the other one of the fixed base and the rotating base is provided with a shifting rod, and a rotor of the angle sensor is provided with a shifting fork. The shifting rod is located in the shifting fork. In the scheme, the fixed base and the rotating base are a connecting structure between the frame and the container, the rotating angle sensor is arranged at the connecting structure, and the rotor of the sensor is driven to rotate through the shifting fork, so that mechanical impact is avoided, the service life of the sensor is prolonged, the detection precision is ensured, and the detection accuracy is improved by detecting the relative rotation between the stator and the rotor. And the influence of road surface gradient is eliminated.

Description

Technical Field

[0001] The utility model relates to the field of construction machinery, in particular to a tipping angle detection device for a dump truck and a dump truck. Background Art

[0002] A dump truck refers to a vehicle that can unload goods by itself through hydraulic or mechanical lifting. Also known as a tipping truck, it consists of components such as an automobile chassis, a hydraulic lifting mechanism, a cargo box, and a power take-off device, and is widely used in industries such as mining and construction. The tipping of the cargo box of a dump truck needs to be angle-limited. The current mainstream methods for angle-limiting the cargo box of a dump truck include the following:

[0003] First, a mechanical contact switch is adopted. In this method, it is impossible to avoid the impact on the mechanical switch when the cargo box reaches the tipping position, and the mechanical switch is easily damaged after long-term use;

[0004] Second, the position where the oil cylinder stroke reaches is used as the limit. Each time when the lifting reaches the position, it will cause an impact on the oil cylinder, and long-term operation will cause the risk of the oil cylinder being pulled out and the risk of the lifting system failing;

[0005] Third, some vehicles use the method of installing an inclination sensor on the cargo box to detect the lifting angle of the cargo box. The angle of the cargo box measured by this scheme is the absolute angle relative to the ground. The data collected on an uneven road surface will mislead the driver and cannot avoid the risk of falling too fast or lifting exceeding the oil cylinder stroke.

[0006] With the continuous improvement of safety requirements in each mining area and the continuous development of the entire mining vehicle industry towards refinement and intelligence, the original cargo box lifting detection scheme is no longer applicable. Summary of the Utility Model

[0007] Aiming at the above deficiencies of the current cargo box limit of a dump truck, the utility model provides a new tipping angle detection device for a dump truck.

[0008] To solve the above problems, the technical solution adopted by the utility model is that a tipping angle detection device for a dump truck includes a fixed base, a rotating base, and an angle sensor. The fixed base and the rotating base are hinged to each other. The stator of the angle sensor is fixedly connected to one of the fixed base and the rotating base, and a dial rod is provided on the other one. A dial fork is provided on the rotor of the angle sensor, and the dial rod is located in the dial fork. In this scheme, the fixed base and the rotating base are the connection structures between the vehicle frame and the cargo box. A rotary angle sensor is arranged here, and the rotor of the sensor is driven to rotate through the dial fork, without mechanical impact, improving the service life of the sensor, ensuring the detection accuracy, and eliminating the influence of the road surface slope by detecting the relative rotation between the stator and the rotor.

[0009] Preferably, the dial rod is made of nylon. It has strong wear resistance and smooth surface lubrication, making the movement of the dial fork smoother.

[0010] Preferably, the angle sensor is installed on the side surfaces of the fixed base and the rotating base. A threaded seat is provided on the side surface of the fixed base or the rotating base. One end of the lever is connected with a bolt and installed on the threaded seat through the bolt. The threaded connection is convenient for replacement, and at the same time, the installation length of the lever can be set.

[0011] Preferably, the stator of the angle sensor is installed on the fixed base, and the lever is installed on the rotating base.

[0012] Preferably, a sensor shield is further provided on the fixed base, and the sensor shield is located on the side of the angle sensor. The protection performance is improved.

[0013] Preferably, a top dead center switch is further provided on the fixed base, and a switch blade is further provided on the rotating base. The rotation path of the switch blade passes through the top dead center switch. The top dead center switch is further set for secondary limit, and the safety is further improved.

[0014] Preferably, when the rotating base rotates 70 degrees relative to the fixed base, the switch blade triggers the top dead center switch.

[0015] On the other hand, the present utility model further provides a dump truck, including a vehicle frame and a cargo box, and further including the above-mentioned dump truck flip angle detection device. The fixed base is installed on the vehicle frame, and the cargo box is installed on the rotating base.

[0016] It can be seen from the above technical solutions that the advantages of the present utility model are as follows: This solution provides a reliable, safe and stable cargo box flip angle monitoring device, replacing the current flip solution without angle monitoring for the cargo box and mechanical hard limit during the lifting and falling process, effectively reducing the possibility of impact on the cargo box, contact switch and vehicle frame when the cargo box falls back, and enhancing the reliability of the whole vehicle in use; the coaxial flip structure design can better transmit the actual flip angle and enable the use of one sensor for multiple vehicle models; the structural design of the nylon rod plus the fork effectively extends the service life of the structure of the present utility model; this utility model can better meet the development direction of vehicle orientation towards refinement, intelligence and unmanned operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the present utility model, the drawings required for description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0018] Figure 1 Structural schematic diagram of Embodiment 1 of the present utility model Figure 1 .

[0019] Figure 2 Structural schematic diagram of the first embodiment of the present utility model Figure 2 .

[0020] Description of main reference numerals

[0021] 1. Fixed base, 2. Rotating base, 3. Angle sensor, 4. Sensor shield, 5. First frame wire plate, 6. Support pad, 7. Fork, 8. Lever, 9. Wire seat, 10. Top dead center switch, 11. Second frame wire plate, 12. Top dead center switch bracket, 13. Switch blade. Specific implementation manners

[0022] To make the objectives, features, and advantages of the present utility model more obvious and understandable, the technical solutions in the present utility model will be clearly and completely described below with reference to the accompanying drawings in the specific embodiments of the present utility model. Obviously, the embodiments described below are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments in this patent, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of this patent.

[0023] Embodiment 1

[0024] As Figure 1 shown, a tipping angle detection device for a dump truck includes a fixed base 1 and a rotating base 2. The fixed base 1 and the rotating base 2 are hinged to each other. An angle sensor 3 is provided on one side of the angle detection device. The angle sensor 3 includes a stator and a rotor, and is installed at the hinge shaft between the fixed base 1 and the rotating base 2. A top dead center switch 10 is provided on the other side of the angle detection device:

[0025] The angle sensor 3 includes a stator and a rotor that can rotate relative to each other, and outputs the relative angle change between the stator and the rotor. Commonly used principles include grating type, variable resistance type, etc. (The angle sensor is prior art and will not be elaborated here). The stator of the angle sensor 3 is fixedly connected to one of the fixed base 1 and the rotating base 2, and a lever 8 is provided on the other. In this embodiment, the stator of the angle sensor is installed on the fixed base 1, the lever 8 is installed on the rotating base 2, a fork 7 is provided on the rotor of the angle sensor, the lever 8 is located in the fork 7, and the lever 8 is made of nylon. A wire seat 9 is provided on the side of the rotating base 2. One end of the lever 8 is connected with a bolt and installed on the wire seat 9 through the bolt. The fixed base 1 includes a first frame wire plate 5, and a sensor shield 4 is installed on the first frame wire plate 5. The sensor shield 4 is located on the side of the angle sensor 3.

[0026] The rotating base 2 further includes a second frame wire plate 11, as Figure 2As shown in the figure, a top dead center switch bracket 12 is provided on the second vehicle frame wire plate 11, and a top dead center switch 10 is installed on the top dead center switch bracket 12. In cooperation with the top dead center switch 10, a switch blade 13 is further provided on the rotating base 2. The rotation path of the switch blade 13 passes through the top dead center switch 10. When the rotating base 2 rotates 70 degrees relative to the fixed base 1, the switch blade 13 triggers the top dead center switch 10.

[0027] Embodiment 2

[0028] This embodiment further provides a dump truck, including a vehicle frame and a cargo box, and further including the dump truck tipping angle detection device described in Embodiment 1. The fixed base 1 is installed on the vehicle frame, and the cargo box is installed on the rotating base 2.

[0029] It can be seen from the above embodiments that the beneficial effects of the present utility model are as follows. This solution provides a reliable, safe and stable cargo box tipping angle monitoring device, replacing the current tipping solution of the cargo box without angle monitoring and mechanical hard limit during the lifting and falling process, effectively reducing the possibility of impact on the cargo box, contact switch and vehicle frame when the cargo box falls back, and enhancing the reliability of the whole vehicle during use; the coaxial tipping structure design can better transmit the actual tipping angle and enable the use of one sensor for multiple vehicle models; the structure design of nylon rod plus fork effectively extends the service life of the structure of the present utility model; this utility model can better meet the development direction of vehicle orientation towards refinement, intelligence and unmanned operation.

[0030] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present utility model. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present utility model. Therefore, the present utility model will not be limited to the embodiments shown herein, but will be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A tipping angle detection device for a dump truck, characterized in that, It includes a fixed base (1), a rotating base (2) and an angle sensor (3). The fixed base (1) and the rotating base (2) are hinged to each other. The stator of the angle sensor (3) is fixedly connected to one of the fixed base (1) and the rotating base (2), and a dial rod (8) is provided on the other one. A fork (7) is provided on the rotor of the angle sensor, and the dial rod (8) is located in the fork (7).

2. The tipping angle detection device for a dump truck according to claim 1, characterized in that The dial rod (8) is made of nylon.

3. The tipping angle detection device for a dump truck according to claim 2, characterized in that, The angle sensor is installed on the side surfaces of the fixed base (1) and the rotating base (2). A threaded seat (9) is provided on the side surface of the fixed base (1) or the rotating base (2). One end of the dial rod (8) is connected with a bolt and is installed on the threaded seat (9) through the bolt.

4. The tipping angle detection device for a dump truck according to any one of claims 1-3, characterized in that, The stator of the angle sensor is installed on the fixed base (1), and the dial rod (8) is installed on the rotating base (2).

5. The tipping angle detection device for a dump truck according to any one of claims 1-3, characterized in that, A sensor shield (4) is further provided on the fixed base (1), and the sensor shield (4) is located on the side of the angle sensor (3).

6. The tipping angle detection device for a dump truck according to any one of claims 1-3, characterized in that, An upper dead center switch (10) is further provided on the fixed base, and a switch blade (13) is further provided on the rotating base (2). The rotation path of the switch blade (13) passes through the upper dead center switch (10).

7. The tipping angle detection device for a dump truck according to claim 6, characterized in that, When the rotating base (2) rotates 70 degrees relative to the fixed base (1), the switch blade (13) triggers the upper dead center switch (10).

8. A dump truck, comprising a vehicle frame and a cargo box, characterized in that, It further includes a tipping angle detection device for a dump truck according to any one of claims 1-7. The fixed base (1) is installed on the vehicle frame, and the cargo box is installed on the rotating base (2).

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