A traction vehicle traction device uncoupling warning protection device

Abstract

The utility model belongs to the technical field of tractors, and relates to a traction device unhooking warning protection device structure of a traction vehicle, including a traction seat and a traction pin, a plurality of transverse traction plates are arranged on one side of the traction seat, a coaxial through hole is arranged on the traction plate, the traction pin is inserted in the through hole to form a traction structure, a non-contact sensor is arranged below the lowermost traction plate, the sensor is electrically connected to a controller, the controller is electrically connected to an instrument panel, the sensor forms a sensing area directly in front of the sensor, in the traction state, the traction pin is located in the sensing area and matches the sensor gap, in the unhooking state, the traction pin moves upward and leaves the sensing area, the sensor transmits an unhooking signal to the controller, and the instrument panel displays fault information. The traction device unhooking warning protection device structure of the traction vehicle provided by the utility model increases the reliability of unhooking warning.

Description

Technical Field

[0001] The utility model belongs to the technical field of tractors, and relates to a traction device unhooking early warning protection device for a tractor. Background Art

[0002] The tractor towing device is an important component that connects the tractor to the trailer and bears the traction force. The device ensures that the tractor and trailer are connected reliably and smoothly, and can be easily and quickly disconnected. The towing pin is connected to the drawbar and prevents the tractor and trailer from loosening during driving through the anti-detachment structure. However, due to improper operation and other factors, the anti-detachment structure of the device did not work, resulting in the separation of the tractor and trailer during driving, which in turn caused property losses and personal injuries.

[0003] Chinese utility model patent CN 216231525 U (publication date: 2022.04.08) discloses a traction device disengagement warning protection device for a tractor, including a traction seat composed of a vertical plate and two or more horizontal plates, the upper and lower horizontal plates are arranged on the vertical plate at intervals, and the traction pin is arranged through the horizontal plate. A sensor electrically connected to a controller is provided on the traction seat on one side of the traction pin, and the controller is electrically connected to the instrument panel. When the traction pin is not disengaged, the sensing end of the sensor contacts the traction pin; when the traction pin is disengaged, the sensing end of the sensor does not contact the traction pin, the sensor transmits a traction pin disengagement signal to the controller, and the instrument panel displays a fault.

[0004] The above device uses a sensor to sense the traction pin to issue a warning, but the traction device of the tractor is not a high-precision component, and the matching accuracy of the traction pin and the traction seat is not high. When in use, it is easy to damage the sensor due to over-tight assembly, and it is easy to fail to sense the traction pin due to over-loose assembly. Utility Model Content

[0005] The utility model aims at the deficiencies of the prior art and provides a decoupling warning protection device for a traction device of a tractor, thereby increasing the reliability of the decoupling warning.

[0006] In order to solve the above technical problems, the purpose of the utility model is achieved through the following technical solutions:

[0007] A traction device uncoupling warning protection device for a traction vehicle comprises a traction seat and a traction pin, a plurality of transverse traction plates are arranged on one side of the traction seat, a coaxial through hole is arranged on the traction plate, the traction pin is inserted in the through hole to form a traction structure, a non-contact sensor is arranged below the lowest traction plate, the sensor is electrically connected to a controller, the controller is electrically connected to an instrument panel, a sensing area is formed in front of the sensor, in the traction state, the traction pin is located in the sensing area and is in clearance with the sensor, in the uncoupling state, the traction pin moves upward and is out of the sensing area, the sensor transmits an uncoupling signal to the controller, and the instrument panel displays fault information.

[0008] In the above-mentioned tractor traction device unhooking warning protection device, the sensor adopts a non-contact sensor commonly used in the field. Preferably, the sensor is a proximity switch, and various types of sensors such as inductive, capacitive, Hall, etc. can be used, preferably an inductive sensor.

[0009] In the above-mentioned unhooking warning protection device for the traction device of a tractor, the controller is electrically connected to the traction motor, and when the unhooking state is sensed, the controller controls the traction motor to slow down.

[0010] In the above-mentioned uncoupling warning protection device for the traction device of a tractor, the upper end of the traction pin is hinged to one end of the connecting plate, the other end of the connecting plate is hinged to the traction pin lifting arm, and an anti-uncoupling hook is provided on the traction seat, and the anti-uncoupling hook is hooked to the upper end of the connecting plate to form an anti-uncoupling structure.

[0011] In the above-mentioned unhooking warning protection device for the traction device of a tractor, the axis of the sensor is arranged in the horizontal direction, and in the traction state, the end of the traction pin passes through the through hole and extends to the bottom of the sensor axis.

[0012] In the above-mentioned unhooking warning protection device for the traction device of the tractor, a mounting bracket is fixedly connected to the vertical bottom plate of the traction seat, and the sensor is fixed on the mounting bracket.

[0013] In the above-mentioned unhooking warning protection device for the traction device of a tractor, a receiving groove cooperating with the sensor is provided at the bottom of the traction plate, and the axis of the sensor is flush with the bottom of the traction plate after installation.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] The utility model provides a traction device unhooking warning protection device for a tractor, which changes the type and installation structure of the sensor. When the traction device has low matching accuracy, it can accurately sense the unhooking state and issue an unhooking warning, greatly increasing the reliability of the unhooking warning protection device. The utility model has the advantages of simple structure, easy installation and high sensitivity. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the utility model in the traction state;

[0017] Figure 2 It is a structural schematic diagram of the utility model in the unhooking state;

[0018] Figure 3 It is the control principle diagram of the utility model;

[0019] Figure numerals: 1. traction seat; 2. traction pin; 3. traction plate; 4. through hole; 5. sensor; 6. controller; 7. instrument panel; 8. traction motor; 9. connecting plate; 10. traction pin lifting arm; 11. anti-unhooking; 12. vertical bottom plate; 13. mounting bracket; 14. accommodating groove. DETAILED DESCRIPTION

[0020] The present invention will be further described below with reference to the accompanying drawings. Figure 1-3 :

[0021] A traction device uncoupling warning protection device for a tractor comprises a traction seat 1 and a traction pin 2. A plurality of transverse traction plates 3 are arranged on one side of the traction seat 1. A coaxial through hole 4 is arranged on the traction plate 3. The traction pin 2 is inserted into the through hole 4 to form a traction structure. A non-contact sensor 5 is arranged below the lowermost traction plate 3. The sensor 5 is electrically connected to a controller 6. The controller 6 is electrically connected to an instrument panel 7. The sensor 5 forms a sensing area directly in front of the sensor 5. In the traction state, the traction pin 2 is located in the sensing area and is clearance-matched with the sensor 5. In the uncoupling state, the traction pin 2 moves upward and disengages from the sensing area. The sensor 5 transmits an uncoupling signal to the controller 6, and the instrument panel 7 displays fault information.

[0022] This embodiment uses a non-contact sensor 5 to detect whether the traction device is facing unhooking or unhooking. Figure 1 When the traction pin 2 is located in the sensing area, the sensor 5 senses the traction pin 2 and transmits a signal that the traction pin 2 has not fallen out to the controller 6 or does not transmit a signal to the controller 6; Figure 2 When the traction pin 2 leaves the sensing area, the sensor 5 no longer senses the traction pin 2. Figure 3, the high-level signal enters the controller 6, the controller 6 controls the traction motor 8, limits the maximum speed of the vehicle, and makes the vehicle slow down quickly. In addition, the controller 6 sends the uncoupling state to the instrument through CAN communication, and the instrument displays the corresponding fault code. Thus, the safe traction operation of the tractor is ensured.

[0023] The sensor 5 is an inductive proximity switch.

[0024] The controller 6 is electrically connected to the traction motor 8 , and when the unhooking state is sensed, the controller 6 controls the traction motor 8 to reduce speed.

[0025] The upper end of the traction pin 2 is hinged to one end of the connecting plate 9, and the other end of the connecting plate 9 is hinged to the traction pin lifting arm 10. The traction seat 1 is provided with an anti-disengagement hook 11, and the anti-disengagement hook 11 is hooked to the upper end of the connecting plate 9 to form an anti-disengagement structure.

[0026] In order to more sensitively sense the presence of the traction pin 2 , the axis of the sensor 5 is arranged in the horizontal direction. In the traction state, the end of the traction pin 2 passes through the through hole 4 and extends to the bottom of the axis of the sensor 5 .

[0027] The installation structure of the sensor 5 in this embodiment is as follows: a mounting bracket 13 is fixedly connected to the vertical bottom plate 12 of the traction seat 1 , and the sensor 5 is fixed on the mounting bracket 13 .

[0028] Furthermore, the bottom of the traction plate 3 is provided with a receiving groove 14 for matching with the sensor 5, and the axis of the sensor 5 is flush with the bottom of the traction plate 3 after installation. By providing the receiving groove 14, the installation position of the sensor 5 can be slightly moved upward, thereby moving the sensing area upward and reducing the requirements for the insertion position of the traction pin 2.

[0029] The above embodiments are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A traction device uncoupling warning protection device for a tractor, comprising a traction seat (1) and a traction pin (2), wherein one side of the traction seat (1) is provided with a plurality of transverse traction plates (3), the traction plates (3) are provided with coaxial through holes (4), the traction pin (2) is inserted into the through holes (4) to form a traction structure, characterized in that: A non-contact sensor (5) is arranged below the lowermost traction plate (3), the sensor (5) is electrically connected to a controller (6), the controller (6) is electrically connected to an instrument panel (7), the sensor (5) forms a sensing area directly in front of the sensor (5), in a traction state, the traction pin (2) is located in the sensing area and is clearance-matched with the sensor (5), in an unhooked state, the traction pin (2) moves upward and is out of the sensing area, the sensor (5) transmits an unhooked signal to the controller (6), and the instrument panel (7) displays fault information.

2. A tractor traction device uncoupling warning protection device according to claim 1, characterized in that: The sensor (5) is a proximity switch.

3. The traction device uncoupling warning protection device of a tractor according to claim 1, characterized in that: The controller (6) is electrically connected to the traction motor (8).

4. The traction device uncoupling warning protection device of a tractor according to claim 1, characterized in that: The upper end of the traction pin (2) is hinged to one end of the connecting plate (9), and the other end of the connecting plate (9) is hinged to the traction pin lifting arm (10). The traction seat (1) is provided with an anti-slip hook (11), and the anti-slip hook (11) is hooked to the upper end of the connecting plate (9) to form an anti-slip structure.

5. The traction device uncoupling warning protection device of a tractor according to claim 1, characterized in that: The axis of the sensor (5) is arranged in the horizontal direction. In the traction state, the end of the traction pin (2) passes through the through hole (4) and extends to the bottom of the axis of the sensor (5).

6. The traction device uncoupling warning protection device of a tractor according to claim 1, characterized in that: A mounting bracket (13) is fixedly connected to the vertical bottom plate (12) of the traction seat (1), and the sensor (5) is fixed on the mounting bracket (13).

7. A tractor traction device uncoupling warning protection device according to claim 6, characterized in that: The bottom of the traction plate (3) is provided with a receiving groove (14) that cooperates with the sensor (5); after the sensor (5) is installed, the axis line of the sensor (5) is flush with the bottom of the traction plate (3).

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