RU2620180C1 - Device for providing operability of caterpillar vehicle chassis - Google Patents

Abstract

FIELD: transportation.

SUBSTANCE: device for ensuring the operability of a caterpillar vehicle chassis consisting of a caterpillar propulsor including caterpillars, driving wheels, idlers with caterpillar tension mechanisms, track rollers, supporting rollers, a suspension comprising torsion shafts, balancers and shock absorbers, and the structure of each caterpillar tension mechanism of the right and the left sides comprises a crank, a worm wheel, a worm and a worm stopper. The caterpillar tension mechanism has a power part consisting of a control unit, a worm electric motor, an electromagnet of the worm stopper. The driving wheels, the idlers, the supporting rollers, the track rollers are equipped with sensors measuring their angular velocity. The torsion shafts are equipped with displacement sensors. The hydraulic shock absorbers are equipped with liquid pressure sensors. The worm wheels are equipped with vibration sensors. All sensors are connected to the information receiving and processing unit connected to the control unit of the power part of the caterpillar tension mechanism and to the memory device.

EFFECT: increasing the service life of the propulsor parts.

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Description

The invention relates to military tracked vehicles, in particular to the undercarriage of a tracked vehicle equipped with a track tensioning mechanism.

The undercarriage of tracked vehicles is a system consisting of a tracked mover and suspension. The caterpillar mover includes two tracks, two drive wheels, two steering wheels with track tension mechanisms, twelve track rollers, ten support rollers. Each crank tension mechanism of the starboard and port side includes a crank, a worm wheel, a worm and a worm stopper.

The suspension includes twelve torsion shafts, twelve balancers and six hydraulic shock absorbers.

The proposed device additionally has a power part of the track tension mechanism consisting of a control unit, an electric motor connected to the worm and the worm stopper electromagnet. In addition, two driving wheels, two steering wheels, twelve track rollers, ten support rollers are equipped with sensors that measure their angular velocity, twelve torsion shafts are equipped with displacement sensors, six hydraulic shock absorbers are equipped with fluid pressure sensors, worm wheels are equipped with vibration sensors, and the sensors are connected to the unit for receiving and processing information.

A high level of specific power speeds allows you to get high maximum and average speeds of tracked vehicles on the ground. However, the implementation of these indicators is limited to large moment losses with an incomplete spot of contact between the drive wheel and the tracked contour. Also, the results of changing the characteristics of the chassis must be used for its diagnosis.

To provide caterpillar contour with limited power consumption for operation, it is necessary to control the tension of the tracks depending on road and ground conditions. To exclude the dumping of tracks from the drive wheels and to limit the departure of track rollers from the tracks during movement, it is necessary to increase the tension of the tracks. Changing the tension is also necessary when driving on rough terrain, to stabilize the wave processes that occur in the free branches of the tracks, and ensure the durability of the mover.

A known design of the mechanism of the tension of the tracks of a transport machine, consisting of a power unit and a hydraulic system (BMD-1 landing combat vehicles, M .: Military Publishing House, 1973, Fig. 124-127, p. 288-294, analogue). The design of the mechanism allows you to synchronously or separately adjust the tension of both tracks when changing clearance or resistance to movement. The disadvantage is the lack of control by the tension of the tracks when cornering.

Close to the invention is the design of a mechanism for automatically tensioning the tracks of a transport machine (patent No. 137536). The design contains a power unit and a spool box. In automatic mode, the tension control of the tracks is carried out using a hydraulic actuator according to the signal coming from the helm of the transport machine. The identification of lateral vibrations of the tracks is carried out using fluid pressure sensors located in the Executive cylinders of the track tension mechanism. The disadvantage of this design is the difficulty of placing the hydraulic system in the machine body. In addition, both tracks will exhibit excessive track tension.

Also, in both designs, the operation of the suspension during movement is not taken into account. The results of the running gear during movement are not analyzed.

The proposed design with a device to ensure the running gear of the tracked vehicle is shown in Fig. 1. It contains twenty-six rotation sensors of the leading, guiding, supporting, track rollers of the caterpillar mover (1), twelve sensors of displacement of the torsion shaft of the suspension (2), six liquid pressure sensors in the hydraulic shock absorbers (3), an information receiving and processing unit (4) , power unit control units (5), worm electric motors (6), worm stop electromagnets (7), memory (8), worm wheel vibration sensors (9), connecting cables.

Description of the invention

When the machine moves, depending on changes in road and soil conditions - resistance to movement, on the direction of movement, the machine turns, from the sensors of the angular speed of rotation of the leading, support, supporting, guide rollers 1, the displacement sensors of the torsion shafts 2, the fluid pressure sensors in the hydraulic shock absorbers 3 is transmitted an electric signal to the information receiving and processing unit 4, when changing the characteristics of the chassis and the need to control the tension of the tracks, an electric signal from the receiving and processing unit formation is transmitted to the control units of the power part 5. From the control unit of the power part 5, a signal is transmitted to the electromagnet stopper electromagnet, which moves the stopper, along with this, the necessary electrical signal is supplied to the worm motor, which rotates the worm through the necessary angle, thereby acting through the worm wheel on the crank. After completing the necessary turn, the worm becomes on the stopper.

The information reception and processing unit continuously monitors the occurrence of transverse wave processes in the branches of the tracks, based on the analysis of changes in the angular velocities of the rollers and oscillatory processes on the worm wheel. To extinguish wave processes, an electric signal from the information receiving and processing unit is transmitted to the control units of the power part 5. From the control unit of the power part 5, a signal is transmitted to the electromagnet's stopper electromagnet, which moves the stopper, and at the same time the necessary electrical signal is sent to the worm’s electric motor, which turns the worm at the required angle, thereby acting through the worm wheel on the crank.

All information from the information reception and processing unit and the control units of the power unit of the track tension mechanism is stored on the storage device.

The effectiveness of this system lies in the fact that the design of this device provides information about the angular velocities of the leading, guides, supporting, track rollers, the movement of torsion shafts, pressure in hydraulic shock absorbers. One of the results of processing this information is an electrical signal to the control unit to control the tension of the tracks during movement. The adjustment results are also stored in the storage device. The storage device stores information and has a database of running gear parameters. Using all this information, you can predict the process of changing the characteristics of the chassis in the future and determine its residual life.

Thus, all this will allow:

1) to increase the stability margin of the caterpillar contour, the durability of the parts of the mover;

2) maximize the use of the running gear resource, prevent premature dispatch for repair, and exclude diagnostic work.

Claims (1)

A device for ensuring the running gear of a tracked vehicle, which consists of a caterpillar mover, including two tracks, two driving wheels, two steering wheels with track tensioning mechanisms, twelve track rollers, ten support rollers, and a suspension, which includes twelve torsion shafts, twelve balancers and six hydraulic shock absorbers, and each crank tension mechanism of the starboard and port side includes a crank, a worm wheel, a worm and a worm stopper, characterized in that that the track tensioning mechanism has a power unit consisting of a control unit, a worm motor, a worm stopper electromagnet, two drive wheels, two guide wheels, while twelve track rollers and ten support rollers are equipped with sensors that measure their angular velocity, twelve torsion shafts are equipped with sensors displacement, six hydraulic shock absorbers are equipped with liquid pressure sensors, worm wheels are equipped with vibration sensors, and all sensors are connected to the information receiving and processing unit Which is connected to the control unit power part tensioner caterpillars, and a memory.

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