JPS5822773A - Operating device for coupler - Google Patents

Abstract

PURPOSE:To enable to automatically release a lock of a coupler by mounting a remotely controllable cylinder unit on a locking unit. CONSTITUTION:When a coupling is removed, a switch 22 of an operating chamber is closed. Then, a changeover valve 20 is switched, the end chamber 15 of a cylinder 13 communicates with an air tank 21, and high pressure air is supplied to the chamber 15. When piston 17 is then slid against the force of a spring 12, a lock plunger 8 is retarded along a guide frame 9, and the engagement of the hook 5 with the engaging groove 10 is disengaged. In coupling, when a king pin 2 is pressed into a holder 7, the hook 5 is turned, and the holder 7 holds the pin 2. Simultaneously, the groove 10 of the hook 5 is opened, a plunger 8 is engaged with the groove 10, the rotation of the hook 5 is retricted, and the coupling is safely and effectively performed.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides an operating device for a coupling device that can easily connect a tractor and a trailer. -.

The operating device of the conventional coupling device has a structure in which it is operated by an operating lever directly provided on the coupling device main body. However, with the above structure, when attempting to remove the trailer from the tractor, the driver must step out of the cab and press the control lever fl.
- The operator has to operate the tractor and then return to the operator's cab to move the tractor forward, which imposes a great deal of effort on the operator and wastes time.

In order to eliminate the above-mentioned drawbacks, the present invention is designed to enable the coupling device to be operated by a remotely controllable cylinder.

To explain the embodiment below with reference to drawings, (1) shows the main body of the coupling device L7, this main body (1) has a V-shaped guide surface +3113 that guides the king pin (2) on the front side of the trailer.
1 is formed, and a fitting part (4) for receiving the king pin (2) is formed in the inner part of the guide surface +31131. +51 +51 is a pair of hooks that are rotatably supported on the r device adjacent to the fitting part f41 K by a pin +61 +61, and the king pin (2) in the fitting part (4) is attached to this hook +51 Clamping part (71+
7+ is formed. 1 (8) indicates a lock plunger that can move forward and backward along a guide frame (9) fixed to the main body. engagement groove 10) When engaged with flω, a pair of hooks +51 +
In addition to preventing the rotation of 51, this hook +51 +
51, the king pin (2) is held in a locking manner.

flll is attached to the lock plunger (8), and the rod (111) extends in the retraction direction of the lock plunger (8), with its free end protruding outward from the outer periphery of the main body (1). A spring (121) is provided so as to always bias the VC lock plunger (8) in the forward direction.

03 is a cylinder for retracting the lock plunger (8), and the cylinder mouth J is fixed to the main body (1).
51 and a base chamber (a slidable piston α that divides into 161
The piston αη is fixed to the free end of the protruding rod (111) in the tip chamber aS+VC, and the lock plunger (8) is moved forward and backward by sliding of the piston opening η.

A hole (18109) is formed in each chamber f151 f16 of the @fertilizing shilling OJ, and a hole (1g
) is opened in the atmosphere Q, and the tip chamber (hole (18) on the 19 side
is connected to the air tank 011 via the switching valve (20) and receives 1A.

The switching valve is switched by a switch located in the operator's cab of the tractor, and when the switch is turned on, the tip chamber (19 and the air tank 011 are connected).
When the switch ■ is turned off, the front chamber (151) is opened to the atmosphere.

(to) is a latch that is pivotally supported at a position close to the lock plunger (8), and the latch has a notch at the end, and the notch (2) is connected to the lock plunger +81 ff, which is engaged with the lock plunger (8). It engages with the mating protrusion (3) to restrict the lock plunger (8) from fitting into the engagement groove QOI (Il]l.

The launch (231 is a spring (261 is a notch (
2" is always engaged with the engagement protrusion @, and the hook i5) is rotated in the direction of removing the king pin (2; Then, the latch θ is rotated in the direction of releasing the engagement between the notch and the engagement protrusion.

(281 is an operating lever for manually advancing and retracting the lock plunger (8), and one end of this operating lever @ is attached to the main body (
1) has a shaft support 1, the other end of the handle protrudes from the main body (1), and the middle part passes through the connecting piece fixed to the rear end of the lock plunger (8), swinging the operating lever ■. When the lock plunger (8) is slid along the guide frame (9), the engagement groove (tll flo)
It is now possible to connect and disconnect from l.

The present invention has the configuration as shown in @.Next, we will explain the connection operation between the tractor and the trailer.First, when the tractor and the trailer are traveling, the front chamber a9 of the cylinder a3 is connected to the switching valve (201) as shown in FIG. Since the lock plunger (8) is open to the atmosphere, the hook 15+151
When the spring O is inserted into the engagement groove (1ω+II),
It is held at 2, and then the hook +51 +51 clamp -
A trailer-side kingpin (21) is held and pulled by the holding portion (7) to maintain the connection between the tractor and the trailer.

Next, when removing the trailer from the tractor, operate the switch ■ in the driver's cab to the ``closed'' position as shown in Figure 2.
5) and the air tank (21) communicate with each other, and high pressure air is supplied to the tip chamber (19).

Then, the piston a slides against the force of the spring (1) and retreats along the lock plunger (81) or the guide frame (9), and engages with the engagement groove a of the hook +51 +51. is released.Then the switch (221
When set to ``off'', the lock plunger (8) moves forward from the point where the tip chamber (151 is exposed to the atmosphere) by the force of the spring G2 [7], but the lock plunger (8)
Since the engaging protrusion (C) engages with the notch 1241 in the latch, the latch is held in a state where its forward movement is restricted.

A tractor there? - When the king pin f21 is moved forward, it receives an external force from the holding part (7) of the hook f5+151, so the hook +51151 is rotated about the pin +61 as shown by the dashed line in Fig. 3, and at the same time, the hook (6
) The engagement pin housed in Like Fufu” +51
The +51 end f will be kept in contact with each other.

Next, when connecting the trailer to the tractor, press the king pin (21) into the gripping part f71 K in the state shown by the dashed line in Figure 3, and the hook f51+51 will rotate as shown by the solid line in Figure 3.
The JA holding part (7) will hold the king pin (21).

Soi, l - hook +51 +51 engagement groove fil at the same time
) (1(I is opened, so the lock plunger (
8) is inserted into the retaining groove mouth n (In) and the hook +51 +
The rotation of 51 is restricted, and the tractor and trailer are connected safely and securely.

If the cylinder, switching valve, etc. is out of order, or if there are multiple workers, the hook can be unlocked by moving the operating lever backwards as shown in Figure 3.
%, and the coupling device can be operated selectively using the cylinder or the operating lever.

As described above, in the present invention, since the coupling device is operated by a remote controllable sill, the driver can easily operate the coupling device from the driver's cab, but the driver can easily operate the coupling device from the driver's cab. There is no need to go outside the driver's cab to operate the coupling device, making the operation extremely easy and quick.

[Brief explanation of drawings]

FIG. 1 is an overall view, and FIGS. 2 and 3 are partially enlarged views of the operating state. (1) is the main body of the coupling device, (2) is the king pin, +51
151 H hook, (8) lock plunger, 11
) flO) engagement groove (Ill is the rod, +12 is the spring, port 3 is the cylinder, (171 is the piston). Applicant: Kyokuto Kaihatsu Kogyo Co., Ltd.

Claims (1)

[Claims] A pair of rotatable hooks that hold a kingpin of a trailer, and a lock plunger that is elastically moved forward and backward by a spring in the direction of fitting into the engagement groove of the hooks are curved and installed in the main body of the coupling device. In the connecting device,
The lock plunger is provided with a rod extending in the forward and backward directions of the lock plunger, a shilling piston fixed to the main body of the coupling device is connected to the rod, and by supplying high pressure fluid to the sill ring, the lock plunger is engaged with the hook. An operating device for a coupling device, characterized in that it is set back from a matching groove so that it hangs.