Leveling supporting leg and vehicle

Abstract

The invention discloses a leveling supporting leg and a vehicle. The leveling supporting leg comprises a lead screw, a nut, an outer pipe, a push rod, a foot plate, an elastic structure, a distance sensor, a driving structure and a controller. The controller is connected with the driving structure, the driving structure is further in driving connection with the nut, the nut is further in driving connection with the lead screw, one end of the push rod is fixedly connected with the lead screw in the axial direction, the foot plate is fixedly connected with the bottom face of the other end of the push rod, and the controller is further connected with the distance sensor. The axial clearance of the lead screw is installed in the outer pipe, the lead screw can move in the axial direction of the outer pipe, the elastic structure is installed between the top of the lead screw and the outer pipe, and the distance sensor is arranged at the top end of the lead screw and used for detecting the moving distance of the lead screw moving in the axial direction of the outer pipe. The distance sensor is arranged above the leveling supporting leg to detect the pressure after the leveling supporting leg touches the ground, and the leveling device has the advantage of being high in leveling precision on the complex, rugged and uneven ground.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of precision transmission, and particularly relates to a leveling support leg and a vehicle. BACKGROUND

[0002] With the development of special vehicles, the weight and size of vehicles are getting larger and larger, and the electric leveling technology of the vehicle body with leveling support legs as the main scheme is widely used. In the vehicle transportation process, the leveling support legs are in the retracted state, when leveling is needed, the vehicle body is in a stationary state, the leveling support legs are extended to the ground at the maximum speed, after the foot plate touches the ground, the leveling support legs reduce the speed and push the vehicle body to rise from the ground at a planned speed and adjust the level.

[0003] At present, in the leveling support leg products used in China, the related sensors are arranged at the bottom of the support leg, and in use, whether the ground supporting is in place is judged by detecting the pressure of the ground on the support leg. Such leveling method has poor leveling effect on complex and rugged uneven ground, and since the sensors are arranged at the bottom of the support leg, the service life is short due to frequent contact with the ground and exposure to wind and sun, and the practicability is low. SUMMARY

[0004] The technical problem to be solved by the application is to provide a leveling support leg, which solves the problems in the prior art.

[0005] The controller is connected with the driving structure, the driving structure is further connected with the nut, the nut is further connected with the lead screw, one end of the push rod is fixedly connected with the lead screw in the axial direction, the foot plate is fixedly connected with the other end of the push rod, and the controller is further connected with the distance sensor.

[0006] The lead screw is installed in the axial gap of the outer pipe, the lead screw can move in the axial direction of the outer pipe, the elastic structure is installed between the top of the lead screw and the outer pipe, and the distance sensor is arranged at the top end of the lead screw.

[0007] The controller is used for controlling the movement of the driving structure, so as to drive the nut to rotate in the first direction, drive the lead screw to move axially close to the ground, drive the push rod to move axially close to the ground, so that the foot plate moves close to the ground, and when the foot plate contacts the ground and is subjected to force, the reverse force can push the push rod to drive the lead screw to compress the elastic structure and move axially towards the top of the lead screw.

[0008] The distance sensor is used for sending a ground contact signal to the controller when detecting that the axial movement distance is less than or equal to the preset distance, so as to control the driving structure to stop driving the nut to rotate.

[0009] In a possible implementation, the leveling support leg further comprises a spline sleeve, the spline sleeve 10 is sleeved inside the outer tube, and an inner wall of the spline sleeve is provided with a spline groove; an outer wall of the lead screw is provided with an external spline, the external spline is matched with the spline groove to form a sliding spline structure capable of allowing the lead screw to move along the axial direction of the outer tube, and the sliding spline structure is further used to limit axial rotation of the lead screw.

[0010] In a possible implementation, the spline sleeve is provided with a stop portion; the stop portion is used to limit the distance of the axial movement of the lead screw along the outer tube.

[0011] In a possible implementation, the elastic structure is a disc spring.

[0012] In a possible implementation, the driving structure comprises a motor, a speed reducer and a transmission gear box; a power input end of the motor is connected with the controller, a power output end of the motor is connected with the speed reducer, the speed reducer is further connected with the transmission gear box, and the transmission gear box is further connected with the nut transmission; the controller is used to control the rotation of the motor, so as to drive the speed reducer to drive the transmission gear box to move, so as to drive the nut to rotate along the first direction.

[0013] The application further provides a vehicle, which comprises at least three leveling support legs according to any one of the possible implementations.

[0014] The leveling support leg comprises a lead screw, a nut, an outer tube, a push rod, a foot disc, an elastic structure, a distance sensor, a driving structure and a controller. The controller is connected with the driving structure, the driving structure is further connected with the nut driving, the nut is further connected with the lead screw driving, one end of the push rod is fixedly connected with the lead screw along the axial direction, the foot disc is fixedly connected with the other end of the push rod, and the controller is further connected with the distance sensor. The lead screw is installed inside the outer tube in the axial gap, the lead screw can move along the axial direction of the outer tube, the elastic structure is installed between the top of the lead screw and the outer tube, and the distance sensor is arranged at the top end of the lead screw. The distance sensor is used to detect the movement distance of the lead screw along the axial direction of the outer tube. The controller is used to control the movement of the driving structure, so as to drive the nut to rotate along the first direction, drive the lead screw to move axially close to the ground, drive the push rod to move axially close to the ground, and make the foot disc move close to the ground. When the foot disc contacts the ground and is subjected to force, the reverse force can push the push rod to drive the lead screw to compress the elastic structure and move upward. The distance sensor is used to send a ground contact signal to the controller when the detected movement distance is less than or equal to a preset distance, so as to control the driving structure to stop driving the nut to rotate. The application detects the pressure after the leveling support leg contacts the ground by arranging the distance sensor above the leveling support leg, and has the characteristics of high leveling precision on the complex, rugged and uneven ground.

[0015] The technical solutions of the application are further described in detail below with reference to the drawings and examples. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 A leveling leg structure diagram of the present application; Figure 2 A leveling leg structure diagram of the present application; Figure 3 A leveling leg structure diagram of the present application;

[0017] BRIEF DESCRIPTION OF DRAWINGS DETAILED DESCRIPTION

[0018] As Figure 1 , Figure 2 , Figure 3 shown, the leveling leg includes: a lead screw 01, a nut 02, an outer tube 03, a push rod 04, a foot disc 05, an elastic structure 06, a distance sensor 07, a driving structure 08 and a controller (not shown in the figure).

[0019] The controller is connected with the driving structure 08, the driving structure 08 is further drivingly connected with the nut 02, the nut 02 is further drivingly connected with the lead screw 01, one end of the push rod 04 is fixedly connected with the lead screw 01 in the axial direction, the foot disc 05 is fixedly connected with the other end of the push rod 04, and the controller is further connected with the distance sensor 07.

[0020] The lead screw 01 is installed in the inner part of the outer tube 03 in the axial direction, the lead screw 01 can move in the axial direction of the outer tube 03, the elastic structure 06 is installed between the top of the lead screw 01 and the outer tube 03, and the distance sensor 07 is arranged at the top end of the lead screw 01, and the distance sensor 07 is used to detect the movement distance of the lead screw 01 moving in the axial direction of the outer tube 03.

[0021] The leveling leg in the embodiment is generally arranged at the bottom or side of the vehicle and is fixedly connected with the vehicle body, and in order to ensure that the vehicle can be leveled, at least three leveling legs are generally arranged on each vehicle. When the vehicle is running, the leveling leg is in a retracted state, and when the vehicle needs to be leveled after stopping, the controller can control the driving structure 08 to move, thereby driving the nut 02 to rotate in a first direction (clockwise direction or counterclockwise direction), driving the lead screw 01 to move axially close to the ground, thereby driving the push rod 04 to move axially close to the ground, so that the foot disc 05 moves close to the ground, and when the foot disc 05 contacts the ground and is subjected to a force, a reverse force can push the push rod 04 to drive the lead screw 01 to compress the elastic structure 06 and move towards the top of the lead screw 01.

[0022] When the distance sensor 07 arranged at the top end of the lead screw 01 detects that the movement distance is less than or equal to a preset distance, the distance sensor 07 can send a ground contact signal to the controller, thereby controlling the driving structure 08 to stop driving the nut 02 to rotate, so that the leveling leg no longer expands or contracts, and the leveling of the vehicle is completed.

[0023] In this embodiment, the deformation size of the elastic structure 06 reflects the force size of the leveling legs on the ground, so that the distance sensor 07 is arranged above the lead screw 01 to detect the displacement distance of the lead screw 01 after being stressed, which is equivalent to detecting the pressure of the leveling legs after being contacted with the ground, and the stress of the at least three leveling legs is consistent, which means that the vehicle has been leveled, and the leveling precision is high on the complex, rugged and uneven ground. In addition, since the distance sensor 07 is arranged above the lead screw 01, it is avoided to contact the ground, and the influence of wind, sunshine, rain and other harsh environments is small, which greatly prolongs the service life of the product and has high practicability. Optionally, as shown in Figure 3 The leveling leg further comprises a spline sleeve 09, the spline sleeve 09 is sleeved in the outer tube 03, and the inner wall of the spline sleeve 09 is provided with a spline groove; the outer wall of the lead screw has an external spline, the external spline is matched with the spline groove to form a sliding spline structure 10 capable of enabling the lead screw to displace along the axial direction of the outer tube, and the sliding spline structure 10 is further used to limit the axial rotation of the lead screw 01.

[0024] Optionally, as shown in Figure 3 The spline sleeve 09 has a stop portion 91. The stop portion 91 is used to limit the displacement distance of the lead screw 01 along the axial direction of the outer tube 03.

[0025] Optionally, the elastic structure 06 can be a disc spring or a spring, which is not limited here.

[0026] Optionally, the driving structure can comprise a motor, a speed reducer and a transmission gear box. The power input end of the motor is connected with the controller, the power output end of the motor is connected with the speed reducer, the speed reducer is further connected with the transmission gear box, and the transmission gear box is further connected with the nut transmission. When the vehicle needs to be leveled after stopping, the controller can control the motor to rotate, so as to drive the speed reducer to drive the transmission gear box to move, so as to drive the nut to rotate in the first direction, drive the foot disc to extend out, when the vehicle does not need to be leveled, the controller can control the motor to rotate, drive the nut to rotate in the second direction, and drive the foot disc to retract. When the first direction is the clockwise direction, the second direction is the counterclockwise direction, and when the first direction is the counterclockwise direction, the second direction is the clockwise direction.

[0027] The embodiment of the present application further provides a vehicle, which has at least three leveling legs according to any one of the above embodiments.

[0028] The above is only a preferred embodiment of the present application, and does not limit the present application, especially the number of leveling legs arranged in the vehicle in the present application, which can be set according to actual needs. Any simple modification, change and equivalent structure change made according to the technical essence of the present application to the above embodiments still belong to the protection scope of the technical solution of the present application.

Claims

1. A leveling leg, characterized in that: include: Lead screw, nut, outer tube, push rod, foot plate, elastic structure, distance sensor, drive structure and controller; The controller is connected to the driving structure, the driving structure is also connected to the nut, the nut is also connected to the screw, one end of the push rod is fixedly connected to the screw along the axial direction, the foot plate is fixedly connected to the bottom surface of the other end of the push rod, and the controller is also connected to the distance sensor; The axial clearance of the lead screw is installed inside the outer tube, and the lead screw can move axially along the outer tube. The elastic structure is installed between the top of the lead screw and the outer tube. The distance sensor is provided at the top of the lead screw, and the distance sensor is used to detect the movement distance of the lead screw along the axial direction of the outer tube. The controller is used to control the movement of the driving structure, thereby driving the nut to rotate in a first direction, driving the lead screw to move axially close to the ground, thereby driving the push rod to move axially close to the ground, so that the foot plate moves close to the ground. When the foot plate contacts the ground and is subjected to force, the reverse force can push the push rod to drive the lead screw to compress the elastic structure and move toward the top of the lead screw; The distance sensor is configured to send a ground contact signal to the controller when detecting that the movement distance is less than or equal to a preset distance, thereby controlling the driving structure to stop driving the nut to rotate.

2. The leveling leg according to claim 1, characterized in that: The leveling leg further comprises a spline sleeve, the spline sleeve is sleeved inside the outer tube, and the inner wall of the spline sleeve is provided with a spline groove; The outer wall of the lead screw has an external spline, which cooperates with the spline groove to form a sliding spline structure that enables the lead screw to move axially along the outer tube. The sliding spline structure is also used to limit the axial rotation of the lead screw.

3. The leveling leg according to claim 2, characterized in that: The spline sleeve has a stop portion; The stop portion is used to limit the distance that the lead screw can move along the axial direction of the outer tube.

4. The leveling leg according to any one of claims 1 to 3, characterized in that: The elastic structure is a disc spring.

5. The leveling leg according to any one of claims 1 to 3, characterized in that: The driving structure includes a motor, a reducer and a transmission gearbox; The power input end of the motor is connected to the controller, the power output end of the motor is connected to the reducer, the reducer is further connected to the transmission gearbox, and the transmission gearbox is further connected to the nut in a transmission manner; The controller is used to control the motor to rotate, thereby driving the reducer to drive the transmission gear box to move, so as to drive the nut to rotate along the first direction.

6. A vehicle, characterized in that: The vehicle has at least three leveling legs according to any one of claims 1-5.

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