JPS62180192A - Fluid-circuit coupling device for car - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention provides a system for connecting a hydraulic circuit provided in a vehicle such as an automobile and a hydraulic circuit provided in a bodywork such as a container mounted on the vehicle in a cab. The present invention relates to a fluid circuit connecting device that can be automatically connected or disconnected by an operation from the outside.

[Conventional technology]

Conventionally, the connection or separation of hydraulic circuits between a vehicle and the container or other bodywork mounted thereon has been done manually using a type of quick coupling.

(Problems to be Solved by the Invention) Since the above-mentioned known quick couplings must be connected or separated manually, the crew must get out of the vehicle and perform the work each time, which is extremely troublesome. There was a problem in that it was time-consuming.

[Means for solving problems]

In order to solve the above problems, this invention removably mounts a bodywork on a vehicle, and after mounting, connects a connector leading to a fluid circuit on the vehicle side and a connector leading to a hydraulic circuit on the body side. In the vehicle, a connector mounting base is provided on the vehicle side that is moved forward and backward by a drive cylinder that can be operated from inside the cab, and the connector on the vehicle side is attached to this mounting base, and the connector is connected to the above connector on the bodywork side. A separable body side connector is provided, and both connectors have a valve body that closes the valve port with spring pressure when the two connectors are separated, and presses them together to open the valve port when the two connectors are connected. It has been established.

[Effect]

Since the present invention has the above-described configuration, the connector on the vehicle side and the connector on the side of the bodywork such as a container are separated by simply mounting the bodywork on the chassis of the vehicle. However, since the valve ports of the separated connectors are closed by the valve bodies, there is no leakage of hydraulic pressure or the like.

To connect the connector from this state, operate the drive cylinder on the vehicle by operating a lever inside the cab, move the connector mounting base towards the connector on the bodywork, and both connectors will automatically fit together. At the same time, the valve body of each connector is pushed open and both valve ports communicate with each other, and the fluid circuit on the vehicle side and the fluid circuit on the bodywork side communicate with each other.

Further, each connector can be separated by pulling out the connector on the vehicle side from the connector on the bodywork by using the drive cylinder in the opposite manner as described above.

〔Example〕

Reference numeral 1 in FIG. 1 is a vehicle implementing the present invention, and the figure shows an example of a container car, in which a container 3 is mounted on a chassis 2, and 4 is its cab.

5 is a subframe on the chassis 2, and the container 3 is placed on the subframe 5 from the rear end of the chassis 2, slid forward on this subframe 5, and mounted on the chassis 2.

Reference numeral 7 denotes a hydraulically actuated drive cylinder mounted on a front portion of the chassis 2. As shown in FIG.

The advance/retreat frame 9 has rollers 10 on both outside front and rear sides of the chassis 2.
It moves forward and backward accurately along the upper left and right pair of guide rails 11.

At both rear ends of the advancing/retracting frame 9, as shown in FIGS. 2 and 3, the front ends of a pair of upper and lower links 12 are arranged so that they can swing from side to side and also slightly up and down using vertical bins. The rear end of each link 12 is connected to the connector mounting base 1.
4 with a vertical pin, and the advance/retreat frame 9 and link 1
2 and the mounting base 14 form a parallelogram, and the connector mounting base 14 is configured to be able to move horizontally and vertically within a certain range.

Reference numeral 15 in FIG. 2 is a restoring spring whose outer ends are connected to both links 12, and the inner ends of each spring 15 are connected to the connector mounting base 1.
4, so that this mounting base 14 is always located at the center.

In addition, the upper end of a suspension spring 18 is connected to the end of the pair of pieces 17 provided at the upper part of the rear side of the advancing/retracting frame S, as shown in FIG. The mounting base 14 is connected to the lower end of the L-shaped piece 19 and suspended by the spring 18.

Furthermore, a pair of left and right vehicle side connectors A and a pair of left and right guide pins 21 located outside of the vehicle side connectors A are provided at the rear of the connector mounting base 14, and the tips of the guide pins 21 are tapered.

Reference numeral 25 denotes a connector mounting base fixed near the lower end of the container 3 via a bracket 24, and this mounting base 25 has a pair of left and right guide holes 22 into which both the guide pins 21 are fitted;
A pair of left and right container side connectors B are provided.

The vehicle-side connector A is as shown in FIGS. 5 and 6. In this figure, reference numeral 27 denotes a cylindrical main body fixed to the connector mounting base 14, and a reciprocating cylinder 28 is provided inside the main body. A sliding tube 31 is fitted between the sliding tubes 30 and 30, and a press spring 32 is provided between the inner portion of the outer end of the inner periphery of the sliding tube 31 and the receiving portion 30.

A cover 34 is fixed to the rear outer periphery of the main body 27, a receiving ring 35 is fixed to the inner periphery of the rear end, and the flange 36 on the outer periphery of the large diameter portion 29 is positioned between the rear end of the main body 27 and the receiving ring 35, and the movement is moved back and forth. The range of movement of the tube 28 is limited.

The rear part of the reciprocating cylinder 28 is a large diameter opening 38, the rear end is an outer bottomed tapered part 3S, and the inner end of the large diameter opening 38 is a small diameter valve port 40. The inside of the valve port 40 is a valve chamber 41, and a tapered valve body 42 is fitted into the valve chamber 41. A pin 43 at the tip of the valve body 42 is loosely fitted into the valve port 40 to form a large diameter opening 38.
It can appear inside at will.

Further, a spring receiving piece 44 having a communication hole is fixed in the reciprocating cylinder 28, and a push spring 45 is inserted between this receiving piece 44 and the valve body 42.
The spring 45 holds the valve body 42 in a position where the valve port 40 is closed.

The container-side connector B is as shown in FIGS. 5 and 6. In other words, the advancing/retracting cylinder 2 of the vehicle side connector A
A main body 52 having a tubular portion 50 and a tapered portion 51 that fit the large-diameter opening 38 and tapered portion 3S provided in the connector mounting base 25 is fixed to the connector mounting base 25.

A circumferential groove is provided on the outer periphery of the end of the tubular portion 50, and an O-ring 53 is fitted therein. 53
to maintain oil tightness.

Further, a valve port 54 is provided at the front end of the main body 52, and a tapered valve body 55 is fitted inside the valve body 55 in the same way as inside the reciprocating cylinder 28, and a pin 56 at the tip thereof is loosely fitted into the valve port 54. A spring receiving piece 57 is fixed to the rear part of the main body 52 and has a communication hole, so that this receiving piece 57 and the valve body 5
A push spring 58 is provided between the valve body 55 and the spring 58.
is held in a position where the valve port 54 is closed.

In addition, a flexible hydraulic pipe 60 is connected to the front end of the reciprocating tube 28 of the vehicle side connector A as shown in FIGS. 5 and 6.
This is connected to a hydraulic unit provided in the vehicle 1, and a hydraulic pipe 61 leading to a hydraulic operating mechanism provided in the container 3 is connected to the rear end of the main body 52 of the container-side connector B.

Next, the operation of the above embodiment will be explained. FIG. 1 shows a state in which the container 3 is mounted on the subframe 5, and at this time,
The chassis 2 and the container 3 are fixed by a locking mechanism (not shown). In addition, in this state, Fig. 2,
As shown in Fig. 3, the piston rod 8 of the cylinder 7 is in the retracted position, the connectors A and B are separated, and the guide pin 21 on the vehicle side is also separated from the connector mounting base 25 on the container side, so the container 3 cannot be mounted. Easy to do.

In addition, in this state, as shown in Fig. 5, connector A, .
Since each valve port 40.54 of H is closed by a valve body 42.55, there is no risk of oil leaking from the valve port 40.54.

When the container 3 is placed on the subframe 5 and fixed as described above, when the drive cylinder 7 is operated by operating the handle inside the cab 4 of the vehicle 1 and the piston rod 8 is advanced rearward, the rear end of the container 3 is fixed. The advancing/retracting frame 9 retreats, and the connector mounting base 14 connected to it via the link 12 retreats, and the left and right guide pins 21 first move toward the connector mounting base 2.
5 begins to enter the left and right guide holes 22. At this time, even if the guide pin 21 and the guide hole 22 are slightly eccentric, it is corrected by moving the mounting base 14 horizontally and vertically by the link 12.

In this way, the left and right guide pins 21 first enter the guide holes 22, and when the mounting base 14 is further retreated under the condition that the positions of both mounting bases 14 and 25 are exactly aligned, both guide pins 21
is deeply fitted into the guide hole 22, and the vehicle side connector A
The tubular portion 5o of the container-side connector B fits into the large-diameter opening 38 of the valve body 42. The O-ring 53 closely contacts the inner surface of the large-diameter opening 38 to maintain oil tightness, and as shown in FIG. 5
The pins 43.56 of No. 5 are pressed against each other, causing each valve body 42.55 to retreat against the spring 45.58, and opening the valve ports 4o, 54.

In this state, in FIG. 6, the hydraulic pressure from the hydraulic pipe 6o enters the valve chamber 41 through the communication hole of the spring receiving piece 44, and
0.54, flows through the communication hole of the spring receiving piece 57 and is sent to the hydraulic pipe 61. The same holds true for the reverse flow.

Further, in the embodiment, one pair each of connectors A and B are provided as shown in FIG. 2, but there may be more than one pair.

Note that in order to separate the connectors A and B that are connected as described above, the piston rod 8 is retracted in the reverse operation when they were connected, so that the connectors A and B are separated, and each valve body 42.
55 closes each valve port 40.55.

〔effect〕

As described above, when a mounting object such as a container is removably mounted on a vehicle, the present invention connects a connector communicating with a fluid circuit such as a hydraulic pressure on the vehicle side and a connector communicating with a fluid circuit of the mounting object side. It can be attached and detached using a drive cylinder that is operated from inside the vehicle's cab, and therefore, unlike conventional devices, there is no need for passengers to get out of the vehicle and operate it, making it extremely convenient and allowing for efficient connection and separation work. .

Furthermore, since each connector has a valve that is closed until connected and automatically opens when connected, there is an advantage that there is no risk of leakage of oil or the like.

[Brief explanation of drawings]

FIG. 1 is a side view of a vehicle equipped with the coupling device of the present invention;
Figure 2 is an enlarged cross-sectional plan view of a part of the main part of the above, Figure 3 is an enlarged side view of a part of the same as shown above, and Figure 4 is a side view of the spring mounting part of the same which is further enlarged and cross-sectioned. Figure, Figure 5,
FIG. 6 is an enlarged longitudinal sectional side view showing various states of the connector portion. 1... Vehicle, 2... Chassis, 3...
...Container as an example of mounted object, 4...
Cab, 7... Drive cylinder, 14...
・Connector mounting base on the vehicle side, 21... Guide pin, 22... Guide hole, 25... Connector mounting base on the river/container side, 27... Vehicle side connector Main body, 28...Advancing/retracting cylinder, 32...Press spring, 40.54...Valve port, 42.55...
...Valve body, A...Vehicle side connector, B...
...Connector on the container side. Patent applicant: Fuji Sharyo Co., Ltd. Agent: Kama 1) Bun 2

Claims (1)

[Claims] In a vehicle in which a bodywork is removably mounted on the vehicle, and a connector leading to a fluid circuit on the vehicle side and a connector leading to a hydraulic circuit on the bodywork are connected after mounting, there is a A connector mounting base that can be moved forward and backward by a drive cylinder that can be operated from A fluid circuit coupling device for a vehicle, in which the connector is provided with a valve body that closes the valve port with spring pressure when the two connectors are separated, and opens the valve port by pressing against each other when the two connectors are connected.