Electronic differential lock executing mechanism with signal feedback function

Abstract

The utility model discloses an electronic differential lock actuating mechanism with a signal feedback function, which comprises an actuating mechanism, the actuating mechanism is positioned in a differential lock shell and movably sleeved on a horizontally arranged guide rod, an eccentric worm wheel is arranged at the upper end of the actuating mechanism, and an eccentric column is arranged at the lower end of the eccentric worm wheel. A sliding groove matched with the eccentric column is formed in the upper end face of the actuating mechanism, and the eccentric turbine drives the eccentric column to slide in the sliding groove when rotating, so that the actuating mechanism moves in the axial direction of the guide rod. A first magnet and a second magnet are respectively arranged on two sides of the upper end of the actuating mechanism; the differential lock shell is provided with a first magnetic control switch and a second magnetic control switch which are matched with the first magnet and the second magnet respectively. The position of the actuating mechanism of the electronic differential lock is accurately monitored through the cooperation of the magnetically controlled switch and the magnet, and signals indicating whether unlocking and locking of the differential lock are successful or not are continuously monitored and fed back, so that the actual state of the differential lock is accurately fed back, and the working reliability of the differential lock is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic differential locks, and particularly relates to an electronic differential lock actuator with a signal feedback function. Background Art

[0002] With the continuous development of agricultural modernization, the large-scale of agricultural machinery has become the main development trend, and the requirements for the working conditions and practicality of products are more stringent, especially for the drive systems of large-scale agricultural machinery. In large-scale agricultural machinery and equipment, in order to ensure the normal operation of products under harsh working conditions such as muddy and potholed roads, a differential lock structure is usually set to ensure its working process. However, the existing differential lock structure does not have a signal feedback function. Whether the differential lock is locked or unlocked successfully, the driver cannot receive feedback information in real time, resulting in the inability to monitor the actual locked and unlocked states of the differential lock in real time and dynamically. It is very easy to cause long-term locking or unlocking and sliding without locking. Being in the locked state for a long time causes no differential between the left and right wheels of the vehicle. Under working conditions that require differential, the load on one side of the differential is too large, resulting in gear tooth damage; being in the unlocked state for a long time limits the power performance of the vehicle and makes it unable to get out of trouble, seriously affecting the working performance of the differential and the safety of vehicle operation. Summary of the Utility Model

[0003] In order to solve the above problems existing in the prior art, the utility model provides an electronic differential lock actuator with a signal feedback function. The technical problems to be solved by the utility model are realized through the following technical solutions:

[0004] An electronic differential lock actuator with a signal feedback function includes an actuating mechanism. The actuating mechanism is located inside the differential lock housing and is movably sleeved on a horizontally arranged guide rod. An eccentric worm gear is arranged at the upper end of the actuating mechanism. An eccentric column is provided at the lower end of the eccentric worm gear. A chute cooperating with the eccentric column is provided on the upper end surface of the actuating mechanism. When the eccentric worm gear rotates, it drives the eccentric column to slide in the chute, so that the actuating mechanism moves axially along the guide rod.

[0005] A first magnet and a second magnet are respectively arranged on both sides of the upper end of the actuating mechanism; a first magnetic control switch and a second magnetic control switch cooperating with the first magnet and the second magnet are respectively arranged on the differential lock housing.

[0006] Further, the distance between the centers of the first magnetic control switch and the second magnetic control switch is greater than the distance between the centers of the first magnet and the second magnet.

[0007] Further, the eccentric worm gear is fixed on the differential lock housing through a central shaft.

[0008] Further, the eccentric worm gear meshes with the worm, and the worm is connected to the output shaft of the drive motor.

[0009] Advantages of the present utility model:

[0010] By arranging magnets on both sides of the upper end of the differential lock actuating mechanism and arranging magnetic control switches on the differential lock housing that cooperate with the two magnets, the present utility model accurately monitors the position of the electronic differential lock actuating mechanism through the magnetic control switches, and continuously monitors and feedbacks the signals of whether the differential lock is unlocked or locked successfully, so as to accurately feedback the actual state of the differential lock, effectively improving the reliability of the differential lock operation and enhancing the running safety of the vehicle.

[0011] The following will further elaborate on the present utility model in detail in conjunction with the drawings and embodiments. Description of the Drawings

[0012] Figures 1 - 2 is a structural schematic diagram of the present utility model;

[0013] Figure 3 is a schematic diagram of the cooperation between the actuating mechanism and the eccentric worm gear;

[0014] Figure 4 is a schematic diagram of the working principle of the present utility model.

[0015] Description of the Reference Numerals:

[0016] 1 - actuating mechanism; 2 - differential housing; 3 - guide rod; 4 - eccentric worm gear; 5 - worm; 6 - drive motor; 7 - first magnet; 8 - second magnet; 9 - first magnetic control switch; 10 - second magnetic control switch; 4-1 - central axis; 4-2 - eccentric column. Specific Embodiments

[0017] The following further describes the present utility model in detail in conjunction with specific embodiments, but the implementation manners of the present utility model are not limited thereto.

[0018] Please refer to Figures 1 - 4, an embodiment of the present utility model provides an electronic differential lock actuator with a signal feedback function, which specifically includes an actuating mechanism 1. The actuating mechanism 1 is located inside the differential lock housing 2 and is movably sleeved on a horizontally arranged guide rod 3. Both ends of the guide rod 3 are fixed on the differential lock housing 2. An eccentric worm gear 4 is arranged at the upper end of the actuating mechanism 1, and the eccentric worm gear 4 is fixed on the differential lock housing 2 through a central shaft 4-1; the lower end of the eccentric worm gear 4 has an eccentric column 4-2, and a sliding groove matching with the eccentric column 4-2 is arranged on the upper end surface of the actuating mechanism 1; the eccentric worm gear 4 meshes with a worm 5, and the worm 5 is connected to the output shaft of a driving motor 6. When the output shaft of the driving motor 6 drives the worm 5 to rotate, the eccentric worm gear 4 is driven to perform an eccentric rotational motion. The rotation of the eccentric worm gear 4 drives the eccentric column 4-2 to slide in the sliding groove, so that the actuating mechanism 1 moves axially along the guide rod 3, thereby realizing the unlocking or locking process of the differential lock.

[0019] First magnets 7 and second magnets 8 are respectively arranged on both sides of the upper end of the actuating mechanism 1; first magnetic control switches 9 and second magnetic control switches 10 respectively matched with the first magnets 7 and second magnets 8 are arranged on the differential housing 2, and the distance between the centers of the first magnetic control switch 9 and the second magnetic control switch 10 is greater than the distance between the centers of the first magnet 7 and the second magnet 8, so that the actuating mechanism 1 can normally realize the unlocking and locking processes of the differential lock.

[0020] Specifically, the first magnets 7 and the second magnets 8 are embedded on both sides of the upper end of the actuating mechanism 1 and perform synchronous axial movement along with the actuating mechanism 1.

[0021] The working process of the electronic differential lock actuator with a signal feedback function is as follows:

[0022] Differential lock unlocking process: When the driving motor receives a differential lock unlocking signal sent by the control circuit of the vehicle system, it starts to drive the worm to reverse. Through the meshing transmission between the eccentric worm gear and the worm, the actuating mechanism drives the second magnet to move axially along the guide rod towards the side of the second magnetic control switch for unlocking. If the second magnetic control switch senses the second magnet, it outputs a feedback signal with a duty cycle of 50% and a frequency of 250±10Hz, indicating successful unlocking. The second magnetic control switch sends the unlocking success signal to the control circuit for the next operation; if the second magnetic control switch does not sense the second magnet and the duration exceeds 10s, it outputs a feedback signal with a frequency of 350±10Hz, indicating unlocking failure. At this time, the second magnetic control switch feeds back the unlocking failure signal to the control circuit, and the control circuit sends a signal to try unlocking again or give an alarm.

[0023] Differential lock process: When the drive motor receives the differential lock signal sent by the control loop of the vehicle system, it starts to drive the worm to rotate forward. Through the meshing transmission of the eccentric worm gear and the worm, the actuating mechanism drives the first magnet to move axially along the guide rod towards the first magnetic control switch for the locking action. If the first magnetic control switch senses the first magnet, it outputs a feedback signal with a duty cycle of 50% and a frequency of 150 ± 10 Hz, indicating that the locking is successful. The first magnetic control switch sends this locking success signal to the control loop for the next operation; if the first magnetic control switch does not sense the first magnet and the duration exceeds 10 s, it outputs a feedback signal with a frequency of 350 ± 10 Hz, indicating that the locking fails. At this time, the first magnetic control switch feeds back the locking failure signal to the control loop, and the control loop sends a signal to try locking again or give an alarm.

[0024] The above content is a further detailed description of the present utility model in combination with specific preferred embodiments, and it cannot be determined that the specific implementation of the present utility model is only limited to these descriptions. For those of ordinary skill in the technical field to which the present utility model belongs, without departing from the concept of the present utility model, several simple deductions or replacements can still be made, and all should be regarded as belonging to the protection scope of the present utility model.

Claims

1. An electronic differential lock actuator with a signal feedback function, characterized in that: The invention comprises an actuating mechanism, which is located in a differential lock housing and is movably mounted on a horizontally arranged guide rod. An eccentric worm wheel is arranged at the upper end of the actuating mechanism, an eccentric column is arranged at the lower end of the eccentric worm wheel, and a sliding groove matched with the eccentric column is arranged on the upper end surface of the actuating mechanism. When the eccentric worm wheel rotates, the eccentric column is driven to slide in the sliding groove, so that the actuating mechanism moves axially along the guide rod. A first magnet and a second magnet are respectively arranged on both sides of the upper end of the actuating mechanism; a first magnetic control switch and a second magnetic control switch cooperating with the first magnet and the second magnet are respectively arranged on the differential lock housing.

2. The electronic differential lock actuator with signal feedback function according to claim 1, characterized in that: The distance between the centers of the first magnetic control switch and the second magnetic control switch is greater than the distance between the centers of the first magnet and the second magnet.

3. The electronic differential lock actuator with signal feedback function according to claim 1, characterized in that: The eccentric worm gear is fixed to the differential lock housing through a central shaft.

4. The electronic differential lock actuator with signal feedback function according to claim 1, characterized in that: The eccentric worm wheel is meshed with a worm, and the worm is connected to an output shaft of a driving motor.

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