JP2542539B2 - Horizontal correction method for vehicles with outriggers - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a straightening method for keeping a vehicle body horizontal with outriggers on the front, rear, left and right sides of a vehicle body in order to prevent a vehicle such as a fire truck with a ladder or a truck crane from falling during work. .

[0002]

2. Description of the Related Art According to Japanese Patent Publication No. 61-52712,
The front vehicle width inclinometer that detects the inclination in the vehicle width direction that connects the two front left and right front outriggers to the vehicle body of the working vehicle as described above, and the vehicle width direction that connects the two rear left and right rear outriggers A rear vehicle width inclinometer that detects the inclination, three inclinometers that detect the inclination in the vehicle length direction, and an arithmetic control device that receives signals from these three inclinometers to perform calculations are provided. Therefore, the inclination in the vehicle width direction and the vehicle length direction in the front and rear of the body of the parked vehicle is detected by the three inclinometers, and the signals from the three inclinometers are received by the arithmetic and control unit, and four outriggers are detected. It is known that the amount of oil supplied to the extension side oil chamber of the hydraulic jack by the expansion / contraction hydraulic circuit is controlled by the arithmetic and control unit to keep it horizontal regardless of the ground on which the vehicle is parked.

[0003]

SUMMARY OF THE INVENTION In the above known device,
Keep the tires of the four wheels on the front, rear, left and right of the vehicle body in contact with the ground,
Since the outrigger hydraulic jack on the lower wheel is extended to level the vehicle body, when the vehicle is leveled, the wheel on the higher side is in contact with the ground and the reaction force due to the elasticity of springs not present in the tire of that wheel. Is unstable because it acts on the vehicle body.
For this reason, it is necessary to increase the weight of the vehicle body to increase its weight and to stabilize the outriggers by extending the length of the outriggers to the outside, which sometimes makes it impossible to perform work on a narrow road.

Further, a hydraulic circuit for expanding and contracting a jack branched from a common hydraulic pump is connected to the four hydraulic jacks, and the hydraulic oil supplied between the hydraulic jack with a small load and the hydraulic jack with a large load is supplied. It is very difficult to extend only the hydraulic jacks of the wheels on the lower side to make the vehicle body horizontal because the amount of the load changes depending on the magnitude of the load.

Further, after the vehicle body is made almost horizontal as described above, the hydraulic jack must be finely adjusted with a small flow rate using the flow control valve to re-level the vehicle body.

[0006]

In order to solve the above-mentioned problems of the prior art, the present invention allows the vehicle to be tilted as shown by the broken line in FIG. Lift the vehicle body with the four hydraulic jacks of the outrigger, then use the highest one of the four hydraulic jacks as a reference, and operate the remaining three hydraulic jacks as shown by the solid line in FIG. According to a first aspect of the present invention, there is provided a horizontal straightening method for a vehicle with outriggers including four outriggers having hydraulic jacks in front, rear, left and right of a vehicle body, wherein each hydraulic jack of each outrigger has Separately from the hydraulic circuit for expansion and contraction, a parallel lift device that additionally supplies the same amount of oil to each expansion side oil chamber of each hydraulic jack is connected, and the vehicle length inclination that detects the inclination in the vehicle length direction is attached to the vehicle body. And a first diagonal inclinometer for detecting a first diagonal tilt connecting two pairs of left front and right rear hydraulic jacks of a quadrangle having the four outrigger hydraulic jacks as corners, A second diagonal inclinometer that detects the inclination in the second diagonal direction connecting two pairs of outrigger hydraulic jacks on the front right and rear left, a signal from the vehicle length inclinometer, and the first and second An arithmetic and control unit that receives the signal from the diagonal inclinometer is installed, the vehicle is stopped, the hydraulic jacks of the four outriggers are extended, the hydraulic jacks are grounded, and then the vehicle body is lifted by the signal from the vehicle length inclinometer. , The arithmetic control unit calculates the amount of additional oil to be replenished to the extension side oil chamber of each hydraulic jack in order to float all the wheels from the ground and level the vehicle body, and operates the parallel lift device to Adjust the amount of oil in the entire hydraulic jack. Additional oil is supplied to the extension side oil chamber, and all hydraulic jacks are extended by the same amount, and all the wheels are lifted from the ground by lifting the vehicle body until it is in an inclined state, and then the first and second Based on the signal of the diagonal inclinometer, the highest hydraulic jack among the four hydraulic jacks and the other three hydraulic jacks are calculated by the arithmetic and control unit to be discriminated, and each extension side of the three hydraulic jacks is determined. The arithmetic and control unit commands the supply of oil to the oil chambers by the hydraulic circuit for expansion and contraction, and the supply of oil to the respective extension side oil chambers of the three hydraulic jacks is performed by the first,
The second diagonal inclinometer is stopped when it becomes horizontal. According to a second aspect of the present invention, in a horizontal straightening method for a vehicle with outriggers having four outriggers having hydraulic jacks on the front, rear, left and right of the vehicle body, the hydraulic jacks of the respective outriggers are provided with respective hydraulic pressures separately from the expansion / contraction hydraulic circuit. Two parallel pairs of front left and right rear sides of a quadrilateral with the hydraulic jacks of the four outriggers as the corners were connected to the vehicle body by connecting parallel lift devices to each of the extension side oil chambers to replenish the same amount of oil. The first diagonal inclinometer that detects the inclination in the diagonal direction with the hydraulic jacks of the outriggers of No. 2 and the second diagonally connected with the hydraulic jacks of the two pairs of front right and left rear outriggers.
A second diagonal inclinometer for detecting the inclination in the diagonal direction and an arithmetic and control unit for receiving the signals of the first and second diagonal inclinometers are provided, the vehicle is stopped, and the hydraulic jacks of the four outriggers are provided. After extending the respective hydraulic jacks and grounding the respective hydraulic jacks, the arithmetic and control unit calculates the inclination in the vehicle length direction by the signals of the first and second diagonal inclinometers, and lifts the vehicle body to lift all wheels from the ground. The arithmetic and control unit calculates the amount of oil to be additionally replenished to the extension side oil chamber of each hydraulic jack in order to make the vehicle body horizontal, and the parallel lift device is operated to reduce the amount of oil to the total hydraulic pressure. By replenishing each extension side oil chamber of the jack, all the hydraulic jacks are extended by the same amount, and all the wheels are lifted from the ground by lifting the vehicle body up to the tilted state. The four oils are output by the signal of the diagonal inclinometer of 2. The hydraulic jack at the highest position among the three jacks and the other three hydraulic jacks are calculated by the arithmetic and control unit to be discriminated, and oil is supplied to the expansion side oil chambers of the three hydraulic jacks by the expansion / contraction hydraulic circuit. The arithmetic and control unit is instructed to stop the supply of oil to the extension side oil chambers of the three hydraulic jacks when the first and second diagonal inclinometers are horizontal. Characterize. In any of the first and second methods, the parallel lift device that adds the same amount of oil to the respective extension side oil chambers of the respective hydraulic jacks of the respective outriggers can increase the amount of additional oil to be supplied. The arithmetic control unit has a replenishing cylinder provided with a plurality of constant volume sensors for controlling a predetermined magnitude, and the arithmetic and control unit replenishes the vehicle body by replenishing the same amount of oil to each extension side oil chamber of each hydraulic jack by the replenishing cylinder. Even when the minimum required oil amount sensor of the constant volume sensor of the replenishment cylinder is selected when lifting the entire vehicle by lifting it in a stopped tilted state, or when it has a motor type distributor. May be.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In FIG. 3, 10 is a vehicle body, 11L, 11R
Left and right front wheels, 12L, 12R are left and right rear wheels, 13L,
Reference numeral 13R denotes left and right front outriggers, and 14L and 14R denote left and right rear outriggers. Each outrigger is slidably fitted to the outer case 15 provided in the vehicle body in the vehicle width direction, and is always slidably fitted. Is an inner case 16 which is housed in the outer case and extends outside the vehicle body by the extension of the piston of the outrigger extension cylinder 17. The outer end of each inner case is a hydraulically operated piston-cylinder type hydraulic jack 18. Is provided downwards. Between the outer case 15 and the inner case 16, as described in the conventional device, an outrigger extension sensor for detecting that the inner case is extended from the vehicle body, and a hydraulic jack 18 extend downward. However, there is provided a jack grounding sensor (not shown) for detecting that the jack is grounded by pushing up the inner case when the stone butt at the lower end of the piston is grounded.

When the vehicle body is lifted by the hydraulic jack to lift the wheels off the ground, the left and right rear wheels 12L,
In order to prevent the 12R tire from bowing down the spring 19 which is not present and bowing downward, as shown in FIG. 4, the vehicle body is provided with the hook 21 which is operated by the spring lock cylinder 20, and the vehicle body is lifted. Cylinder 2 above
0 piston to extend hook 21 and spring 19
Hang it on the metal fitting 22 provided in the center of the
It is preferable to prevent the rear wheel from hanging down by being integrated with. Instead of the hook 21, one end of the rope is connected to the center of the spring 19 not present, and the spring lock cylinder 20 pulls the other end of the rope to pull up the spring not present in each rear wheel, and the spring 19 not present. The car body 10
May be integrated with.

The pressure oil from the hydraulic pump 23 is used as a common hydraulic circuit 2 for expanding and contracting the four outrigger extension cylinders 17.
4, a common hydraulic circuit 25 for expansion and contraction of the spring-locking cylinders 20 of the two rear wheels, four individual expansion and contraction hydraulic circuits 26 for individually operating the four hydraulic jacks 18, operating hydraulic pressure for a parallel lift device described later. The circuit 27 is branched and supplied via an electromagnetic switching valve and returned to the reservoir 28 (see FIGS. 5, 7, and 8).

The parallel lift device 30 is for replenishing the same amount of pressure oil to the respective expansion side oil chambers 18a of the four hydraulic jacks 18 so as to extend the pistons of the respective hydraulic jacks downward by the same length. Then, the operating hydraulic circuit 27,
An electromagnetic switching valve 29 connected to the circuit, a replenisher 30 ',
The refueling machine 30 'is composed of a replenishing circuit for replenishing pressure oil from the refueling machine 30' to the expansion side oil chamber of each hydraulic jack via a check valve. Replenishment cylinder 3 having a piston 32 protruding outside the cylinder as the chamber is additionally replenished, and having a plurality of constant volume sensors 33 provided along the protrusion path of the piston.
1 or the motor type distributor 34 may be used, and the extension side oil chamber 18
The supply circuit 35 for additionally supplying pressure oil to a may be connected to the expansion circuit 26 of the individual hydraulic jack.

Since there is a limit to the length of the piston that extends downward from the four hydraulic jacks in order to make the vehicle body 10 horizontal, the vehicle body 10 detects inclination in the vehicle width direction as shown in FIG. A vehicle width inclinometer 40 and a vehicle length inclinometer 41 for detecting an inclination in the vehicle length direction are provided, and when a vehicle is parked, the vehicle width inclinometer 40 and a signal from the vehicle length inclinometer 41 are used to perform arithmetic control described later. The device 44 calculates the leaning angle of the vehicle body, and it is determined whether or not the leaning angle of the vehicle body can be made horizontal without grounding all the wheels by the four hydraulic jacks of the front, rear, left and right outriggers. When the car body is not leveled, the car body is moved to a place where the car body can be leveled and parked, and then the car body is leveled.

To make the vehicle body horizontal by the method of claim 1,
In addition to the vehicle length direction inclinometer 41, two pairs of left front and right rear outriggers 13L and 14R of a quadrangle whose corners are the hydraulic jacks 18 of the four outriggers 13L and 13R, 14L and 14R provided on the vehicle body 10 are provided. Detecting the inclination in the first diagonal direction connecting the hydraulic jacks 18 of the first
The diagonal inclinometer 42, the second diagonal inclinometer 43 that detects the inclination in the second diagonal direction that connects the hydraulic jacks 18, 18 of the two pairs of front right and left rear outriggers 13R and 14L, and the vehicle described above. An arithmetic and control unit 44 is used which receives the signals of the long inclinometer 41 and the signals of the first and second diagonal inclinometers 42 and 43. The first diagonal inclinometer 42 and the second diagonal inclinometer 43 are the inclinations of the hydraulic jacks when the inner cases 16 of the pair of outriggers 13L and 14R and 13R and 14L are projected from the vehicle body 10 to the outside. Is preferably detected.

When the vehicle is parked and its inclination angle is within the range in which the vehicle body can be leveled with the hydraulic jack as described above,
The electromagnetic switching valve 24 'connected to the expansion / contraction common hydraulic circuit 24 of the outrigger extension cylinder is operated from the neutral position to extend the inner case 16 of each outrigger to the outside of the vehicle body, and then to the individual expansion / contraction hydraulic circuit 26 of each hydraulic jack. All the connected electromagnetic switching valves 26 'are operated from the neutral position to supply pressure oil to the extension side hydraulic pressure 18a of the hydraulic jack 18 of each outrigger (broken line arrow in FIG. 1), and the hydraulic jacks are extended downward respectively. Ground the bottom of the hydraulic jack. These controls are performed by the above-mentioned outrigger extension sensor and the hydraulic jack ground sensor. At this time, the electromagnetic switching valve 25 'of the expansion / contraction common hydraulic circuit 25 of each spring lock cylinder 20 is actuated from neutral, and the hook 21 is hooked on the metal fitting 22 by the piston thereof, and the left and right rear wheels 12L, 12R.
It is preferable that the spring 19 not included in the above is integrated with the vehicle body.

Then, the same amount of pressure oil is additionally supplied to the respective extension side oil chambers 18a of all the hydraulic jacks 18 to extend the respective hydraulic jacks downward by the same length, so that the vehicle body is parked in an inclined state. (Broken line in FIG. 2), all wheels 1
Separate 1L, 11R, 12L and 12R from the ground. The height at which the vehicle body is lifted is a height at which all the wheels are kept floating from the ground even when the vehicle body is next leveled (solid line in FIG. 2). The arithmetic and control unit 44 receives a signal from the vehicle length inclinometer 41, and based on the signal, the arithmetic and control unit adds each hydraulic jack 18 to the extension side oil chamber 18a in order to extend downward by the same length. The amount of oil to be replenished is calculated, and the parallel lift device 30 is instructed, and as shown by the solid line arrow in FIG. 1, the replenishment circuit 35 additionally replenishes the above-mentioned amount of oil to the respective extension side oil chambers 18a of the respective hydraulic jacks 18. . The parallel lift device 30 forcibly replenishes each of the hydraulic jacks 18 with a predetermined amount of pressure oil in each of the extension-side oil chambers of the individual hydraulic jacks, so that each hydraulic jack is the same regardless of the load. Extend the length downwards, lift the car body in a tilted state until it is parked, and then level the car body so that the wheels do not touch the ground.

In FIG. 5, the replenisher 3 of the parallel lift device 30 is shown.
0'is a replenishing cylinder 31L for additionally replenishing pressure oil to the two hydraulic jacks of the left and right outriggers 13L and 14L.
And a replenishment cylinder 31R that replenishes the pressure oil to the two hydraulic jacks of the right and left outriggers 13R and 14R, both replenishment cylinders 31L and 31R being in parallel with the operating circuit 2
7 is connected to the solenoid switching valve 29, and each cylinder is connected to the replenishment chamber 3
The maximum amount of pressure oil to be supplied to each of the two hydraulic jacks is stored in 1a, and the pressure oil is supplied to the extension side oil chamber 18a of each hydraulic jack via the electromagnetic opening / closing valves 31'L and 31'R and the flow dividers 36L and 36R. It is supposed to do. Arithmetic control device 4
4, the electromagnetic switching valve 29 is switched to the replenishment side, the electromagnetic opening / closing valves 31'L, 31'R are opened, and when the pressure oil is supplied to the replenishment cylinders 31L, 31R through the electromagnetic switching valve 29, the piston Numeral 32 extends out from the replenishing cylinders 31L and 31R, respectively, and pushes out the pressure oil in the replenishment chamber 31a, and the pushed out pressure oil is electromagnetic on-off valves 31'L and 31'R.
Through the flow dividers 36L and 36R, respectively, and the same amount is added to the expansion side oil chambers 18a of the hydraulic jacks 18 from the replenishment circuit 35 to supply the pressure oil in the compression side oil chambers of the hydraulic jacks. Is a solenoid on-off valve 31'L, 31'R,
It is returned to the reservoir 28 via the electromagnetic switching valve 29. As described above, the piston 32 of each supply cylinder 31L, 31R
A plurality of constant volume sensors 33 are provided along the projecting path, and are shown as A3 ... 6 for the replenishment cylinder 31L and A7 ... 10 for the replenishment cylinder 31R (see FIGS. 5 and 6). If Fθ is the forward ascending inclination angle and Rθ is the backward ascending inclination angle, for example, 3 ° <Fθ ≦ 5 for A3 and A7.
°, A4, A8 is 0 ° <Fθ ≤ 3 °, A5, A9 is 0 °
<Rθ ≦ 3 °, A6 and A10 are 3 ° <Rθ ≦ 5 °, and the constant capacity sensor is set according to the inclination angle. For this reason, the inclination angle of the vehicle body in the parked state is 4 °
Then, the piston 3 of each replenishment cylinder 31L, 31R
2 extends to replenish pressure oil to the extension side oil chamber of the hydraulic jack, and when the projection provided on the piston 32 reaches A3 of the constant volume sensor, the arithmetic control unit 44 causes the solenoid on-off valve 3
1'L is closed to stop additional replenishment, and when the constant volume sensor A7 is reached, the electromagnetic on-off valve 31'R is closed to stop additional replenishment, thus closing both electromagnetic on-off valves 31'L and 31'R. Then, the arithmetic and control unit 44 returns the electromagnetic switching valve 29 to the neutral position. In other words, the angle of inclination of the parked car goes up,
Or, how many times the vehicle body is lifted at the time of backward climbing, it is known that the wheels do not touch the ground even when the vehicle body is next leveled, because it is known according to the distance between the front and rear wheels of the wheels. As described above, the arithmetic and control unit 44 calculates the amount of oil to be additionally replenished to each expansion side oil chamber of each hydraulic cylinder, switches the electromagnetic switching valve 29 of the working hydraulic circuit 27 from neutral, and causes each parallel cylinder of the parallel lift device 30 to replenish each hydraulic cylinder. When pressure oil is additionally replenished to each extension-side oil chamber of the hydraulic cylinder, parallel lift is performed, and when the amount of additional replenishment oil to each extension-side oil chamber reaches the calculated value, the electromagnetic switching valve 29 of the working hydraulic circuit 27 is neutralized. Then the parallel lift ends. The operation control device 44 then switches the electromagnetic switching valve 29 to the reverse return side to supply the pressure oil to the respective supply chambers 31a of the supply cylinders 31L and 31R to return the pistons 32 to the original positions. Since parallel lift is performed in FIG. 5, additional hydraulic oil is supplied to the front and rear outrigger hydraulic jacks on the left side by the replenishing cylinder 31L, and pressure oil is added to the right and left outrigger hydraulic jacks on the right and left outriggers by the replenishing cylinder 31R. Since the replenishment is performed, the electromagnetic opening / closing valve 31'L,
31'R is provided, but when the pressure oil pushed out from one replenishing cylinder is divided into four by a flow divider and additional replenishment is made to each hydraulic jack to perform parallel lift, the solenoid opening / closing valve 3
1'L and 31'R are unnecessary.

In FIG. 7 of the second embodiment, the parallel lift device 3 is shown.
0 replenisher 30 'consists of four hydraulic motors 34a connected to a series of shafts 38 for adding pressure oil to the individual extension side oil chambers 18a of the four hydraulic jacks 18, each of which hydraulic motors 34 a is a motor type distributor 34 connected in parallel with a flow rate control valve 37 for making the pressure oil from the electromagnetic switching valve 29 of the working hydraulic circuit 27 a constant flow rate. The total amount of oil to be additionally supplied to all the extension side oil chambers 18a of the four hydraulic jacks is calculated, and the electromagnetic switching valve 29 connected to the operating hydraulic circuit 27 is controlled by a timer so that the total amount of oil flows only while The switching valve 29 is opened. As a result, the constant flow rate of pressure oil that has passed through the flow rate control valve 37 is equally distributed to the four hydraulic motors 34a that rotate integrally.
It is supplied and is additionally replenished from each replenishment circuit 35 to the extension side oil chamber 18a of each hydraulic jack.

In FIG. 8 of the third embodiment, the parallel lift device 3 is shown.
0 replenisher 30 'has the same four hydraulic motors 34a as above.
In this case, the amount of oil that can be additionally supplied to the extension side oil chamber 18a of each hydraulic jack by one rotation of the hydraulic motor is known. For this reason, the rotation speed detection sensor 39 detects the rotation speed of a series of shafts 38 that connect the four hydraulic motors, and the arithmetic and control unit 44 calculates the amount of additional replenishment oil and commands the electromagnetic switching valve 29 to control each of them. When the supplementary replenishment of the pressure oil to the extension side oil chamber 18a of the hydraulic jack is started, the number of revolutions of the shaft 38 is detected at the same time by the revolution number detection sensor 39, and the number of revolutions corresponds to each extension side oil of each hydraulic jack. When a predetermined value corresponding to the amount of oil to be additionally supplied to the chamber is reached, the arithmetic and control unit returns the electromagnetic switching valve 29 to the original state and stops the supply. As a result, the same parallel lift can be performed without using the above-described flow rate control valve 37 and the timer that controls the electromagnetic switching valve 29.

In this way, when the vehicle body is parallel lifted to a predetermined height in the parked inclined state, the arithmetic control unit 44
Receives signals from the first diagonal inclinometer 42 and the second diagonal inclinometer 43, and performs calculation to determine the highest one hydraulic jack of the four hydraulic jacks and the other three hydraulic jacks. The individual solenoid switching valves 26 'of the hydraulic circuits 26 for expansion and contraction of the three hydraulic jacks are operated, and each of the three hydraulic jacks is operated by each of the hydraulic circuits 26 as shown by the solid line arrow in FIG. The first diagonal that detects the tilt in the first diagonal direction by connecting the hydraulic jacks of the two front left and right rear outriggers by replenishing the extension side oil chamber with pressure oil to extend the three hydraulic jacks downward When the inclinometer 42 detects horizontal, the pressure oil supply to the front left and rear right hydraulic jacks is stopped, and the second diagonal inclinometer 43 connecting the front right and rear left hydraulic jacks is connected. When it detects horizontal, its front right and left To stop the supply of hydraulic fluid to the filtration of hydraulic jacks. As a result, the car body becomes horizontal regardless of the slope of the parked ground, and all wheels are floating above the ground (Fig. 2 solid line). At this time, if it is indicated that any of the jack ground sensors of the four hydraulic jacks is not in the grounded state, the arithmetic and control unit 44 causes the electromagnetic switching valve 26 'of the hydraulic circuit 26 for individual expansion and contraction of the outrigger hydraulic jack. Is operated to supply pressure oil to the extension side oil chamber to extend only the hydraulic jack, and when the ground contact sensor detects a ground contact state, supply of pressure oil is stopped.

In order to make the vehicle body horizontal by the method of claim 2,
The four outriggers 13L and 13R, 14L and 14R
First diagonal inclinometer that detects the inclination in the first diagonal direction connecting the hydraulic jacks 18, 18 of two pairs of left front and right rear outriggers 13L and 14R having a corner of each hydraulic jack 18 of FIG. 42, and a second diagonal inclinometer 43 that detects the inclination in the second diagonal direction that connects the hydraulic jacks 18, 18 of the two pairs of front right and rear left outriggers 13R and 14L.
Then, the arithmetic and control unit 44 which receives the signals of the first and second diagonal inclinometers 42 and 43 is used. Also in this case, the first diagonal inclinometer 42 and the second diagonal inclinometer 43 are the hydraulic jacks when the inner cases 16 of the pair of outriggers 13L and 14R, 13R and 14L are projected from the vehicle body 10 to the outside. It is preferable to detect the tied inclination. Further, the arithmetic and control unit 44 has a function of receiving the signals of the first and second diagonal inclinometers 42 and 43 and calculating the inclination of the vehicle body both in the vehicle width direction and the vehicle length direction. I shall.

When the vehicle is parked and the inclination angle of the vehicle body is within a range that can be leveled by the four hydraulic jacks, the inner case 16 of each outrigger is extended to the outside of the vehicle body as described above, and each of the outriggers is extended. Hydraulic jack 1
Extend 8 downwards to ground. Also in this case, the spring lock cylinder 20 is operated to operate the left and right rear wheels 12L and 12R.
It is preferable to integrate the spring 19 which is not present in the vehicle body with the vehicle body.

Then, the arithmetic and control unit 44 calculates the inclination of the vehicle body in the vehicle length direction on the basis of the signals from the first and second diagonal inclinometers 42 and 43, and based on this result, the vehicle body is inclined as described above. A parallel lift for additionally replenishing the extension side oil chamber 18a of each of the four hydraulic cylinders 18 required to raise all the wheels even when the vehicle is horizontally tilted and then the vehicle body is horizontally leveled. Calculate the amount of oil for use.

Then, the arithmetic and control unit 44 gives an instruction to the parallel lift unit 30 to cause the replenishing machine 30 'to replenish each hydraulic cylinder 18 with a required amount of pressure oil as described above to execute the parallel lift. The parallel lift device 30 is shown in FIGS.
Any of 8 is acceptable. After that, the arithmetic and control unit 44
As described above, one of the highest four of the four hydraulic jacks and the other three are calculated and determined by the signals of the second both-sided diagonal inclinometers 42 and 43, and the extension side oil of the three hydraulic jacks is determined. The chamber 18a is supplied with pressure oil until the first and second diagonal inclinometers 42 and 43 detect the level, and the vehicle body is leveled. Then, one of the jack ground sensors of the four hydraulic jacks is grounded. If it detects that it is not in the state, only the hydraulic jack is extended downward until the ground sensor detects the ground state.

In this way, when the body is leveled and the work is completed, the four hydraulic jacks are contracted, all the wheels are grounded, and the lower ends of the hydraulic jacks are floated from the ground. The inner case 16 of each outrigger is placed in the outer case 15. Store.

[0024]

As described above, according to the present invention, the vehicle body 10 is parallel lifted by the parallel lift device 30 to a height at which all the wheels are not grounded even when the vehicle body 10 is parked and inclined next time. Since the vehicle body is horizontal, the entire weight of the vehicle is distributed and added to the hydraulic jacks of the four outriggers. Therefore, since the weight of the vehicle acts as a weight, the vehicle body can be stably kept horizontal, the overhanging length of the outriggers can be shortened, and work on a narrow road becomes possible. In particular, when the rear wheel is integrated with the vehicle body by the spring lock cylinder 20, the rear wheel does not hang down, and the height at which the parallel lift device 30 lifts the vehicle body can be lowered, which is more stable. Further, the parallel lift by the parallel lift device 30 can be surely performed because the replenisher 30 'forcibly replenishes the required amount of oil to the extension side oil chambers of the four hydraulic jacks of the front, rear, left, and right outriggers. . Further, the vehicle body can be quickly and accurately leveled only by the two operations of the parallel lift by the parallel lift device 30 and the subsequent horizontal correction.

[Brief description of drawings]

FIG. 1 is a schematic explanatory diagram of a main part of an apparatus for carrying out the present invention.

FIG. 2 is an explanatory diagram showing a state in which a vehicle body is lifted in parallel and then horizontally placed.

FIG. 3 is a plan view of a vehicle body.

FIG. 4 is a front view of an example of a spring lock device.

FIG. 5 is a hydraulic circuit according to the first embodiment of the present invention.

FIG. 6 is a side view of the supply cylinder of FIG.

FIG. 7 is a hydraulic circuit diagram of a second embodiment of the present invention.

FIG. 8 is a hydraulic circuit diagram of another embodiment of the present invention.

[Explanation of symbols]

 10 vehicle body 11 front wheel 12 rear wheel 13 front left and right outriggers 14 rear left and right outriggers 18 hydraulic jacks of each outrigger 23 hydraulic pump 26 individual hydraulic circuits for expanding and contracting hydraulic jacks 27 operating hydraulic circuit of parallel lifting device 29 parallel lifting device Electromagnetic switching valve 30 Parallel lift device 30 'Pressure oil replenisher for parallel lift 31 Replenishing cylinder 32 Piston 33 Constant volume sensor 34 Motor type distributor 35 Replenishing circuit 41 Vehicle longitudinal direction inclinometer 42 1st diagonal inclinometer 43 No. 2-diagonal inclinometer 44 arithmetic and control unit

Claims (4)

(57) [Claims] 1. A front and rear vehicle body, the outrigger with the horizontal correcting method of a vehicle equipped with four outrigger with hydraulic jacks to the left and right, to the hydraulic jack of each outrigger, apart from the telescoping oil pressure circuit, the hydraulic Parallel lift devices are connected to the extension side oil chambers to replenish the same amount of oil respectively, and a vehicle length inclinometer for detecting the vehicle length direction inclination and the four outrigger hydraulic jacks are used as corners on the vehicle body. A pair of left front and right rear outrigger hydraulics of a quadrangle that connects the first diagonal inclinometer that detects the diagonal in the first diagonal direction and hydraulic pressures of the two front outboard right and left rear outriggers. A second diagonal inclinometer for detecting an inclination in a second diagonal direction with the jack connected, and an arithmetic and control unit for receiving signals of the vehicle length inclinometer and signals of the first and second diagonal inclinometers. provided, to stop the vehicle, the One after grounding the respective hydraulic jacks each hydraulic jack and each extension of the outrigger, lift the vehicle body by a signal of the vehicle length inclinometer, elongation side of the hydraulic jack to level the vehicle body to float all wheels off the ground The same amount of additional oil to be supplied to the oil chambers is calculated by the arithmetic and control unit, and the parallel lift device is operated to additionally supply the oil amounts to the extension side oil chambers of all the hydraulic jacks. the hydraulic jack in the same amount extended, lift untilゝinclined state of stopping the vehicle floating all wheels off the ground, then, the first, the <br/> four by the signal of the second diagonal inclinometer and the highest hydraulic jack of the hydraulic jack, with three hydraulic jacks otherwise determined by calculating in the arithmetic and control unit, the oil in the hydraulic circuit for the stretch in the stretch side oil chamber of the three hydraulic jack To And commands the feed before Symbol arithmetic and control unit, the supply of oil to each <br/> extension-side oil chamber of the three respective hydraulic jacks, the first, second diagonal direction inclinometer horizontal A horizontal straightening method for a vehicle with an outrigger, which is characterized in that the vehicle is stopped when it becomes. Wherein the front and rear of the vehicle body, the outrigger with the horizontal correcting method of a vehicle equipped with four outrigger with hydraulic jacks to the left and right, to the hydraulic jack of each outrigger, apart from the telescoping oil pressure circuit, the hydraulic connect the parallel lifting device for replenished respectively the same amount of oil to each extension-side oil chamber of the jack, the vehicle body, two pairs of left and right behind the quadrilateral to the corner of each of the hydraulic jacks of the four outrigger The first diagonal inclinometer that detects the tilt in the first diagonal direction that connects the hydraulic jacks of the outriggers and the second diagonal tilt that connects the two pairs of front right and left rear outrigger hydraulic jacks. a second diagonal inclinometer for detecting, the first, the arithmetic and control unit is provided which receives a signal of the second diagonal inclinometer, stop the vehicle, each of the respective hydraulic jacks of the four outrigger to each extension Hydraulic jack After grounding, the arithmetic and control unit calculates the inclination in the vehicle length direction based on the signals of the first and second diagonal inclinometers, and the hydraulic pressure is used to raise the vehicle body and lift all the wheels off the ground to make the vehicle body horizontal. Add a calculation of the amount of oil to the same amount replenished to the extension-side oil chamber of the jack performs in the arithmetic and control unit, the oil amount by operating the parallel lifting device to the extension-side oil chamber of all the hydraulic jack Replenish,
Thus the same amount extended all the hydraulic jacks, to lift the inclined state of stopping the vehicle orゝfloated all wheels off the ground, then, the first, the the signal of the second diagonal inclinometer <br /> The hydraulic jack at the highest position of the four hydraulic jacks,
With the other three hydraulic jacks of determining by calculation by the arithmetic and control unit, before to supply the oil in the hydraulic circuit for the stretch in the extension <br/> beauty side oil chamber of the three hydraulic jack commanded by <br/> Symbol arithmetic and control unit, the supply of oil to each <br/> extension-side oil chamber of the three hydraulic jacks, the first, second diagonal direction inclinometer is horizontal A horizontal correction method for a vehicle with an outrigger, which is characterized in that the vehicle is stopped. 3. The method of claim 1, in the horizontal correcting method of outriggers with vehicle according to any one of claims 2, wherein the four
One the parallel lifting device for adding respectively the same amount of oil in the extension-side oil chamber of the hydraulic jack of each outrigger of the supply cylinder with a plurality of constant volume sensor for controlling the amount of oil replenished to a predetermined magnitude The arithmetic and control unit has the above-mentioned, when the same amount of oil is replenished to the respective extension side oil chambers of the respective hydraulic jacks by the replenishing cylinder and the vehicle body is lifted until the vehicle is stopped and the whole vehicle is floated. A horizontal straightening method for a vehicle with an outrigger, characterized in that a sensor with a minimum required oil amount of a constant volume sensor of a supply cylinder is selected. 4. The method of claim 1, in the horizontal correcting method of outriggers with vehicle according to any one of claims 2, wherein the four
The parallel lifting device, the horizontal correcting method outrigger with vehicles having a motor type distributing machines One of adding respectively the same amount of oil to each extension-side oil chamber of the hydraulic jack of outriggers.