JP2944822B2 - Position fixing device for jack mechanism for stationary vehicle - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a jack mechanism for stopping a vehicle for safely operating a jack device provided on a lower surface of a vehicle such as a communication satellite tracking car, a broadcasting car, a medical X-ray car, and a product exhibition car. The present invention relates to a position fixing device.

[0002]

2. Description of the Related Art Conventionally, vehicles such as a communication satellite tracking vehicle, a broadcasting vehicle, a medical X-ray vehicle, and a product display vehicle are provided with a vehicle stationary jack mechanism in order to obtain a stable stationary state during work. I have. This conventional jack mechanism is disclosed in
As in the invention described in No. 2553, an oil cylinder is rotatably connected to a lower surface of a vehicle via a main shaft, and when the vehicle is stationary, the oil cylinder is operated to extend downward to the ground surface. It is also known that the oil cylinder is operated and contracted when not in use, and is located horizontally on the lower surface of the vehicle.

[0003]

However, the jack mechanism of this conventional method does not provide a means for fixing the horizontally positioned oil cylinder from outside, and only performs the operation while maintaining the oil cylinder oil pressure at a constant pressure. It is. Therefore, if oil leaks in the hydraulic system of the oil cylinder, etc., without turning on the jack mechanism,
The oil cylinder rotates vertically about the main shaft as a fulcrum, and may extend downward.

[0004] For this reason, if the operator moves the vehicle without knowing the oil leak, there is a danger that the oil cylinder projecting from the lower surface of the vehicle comes into contact with the protrusion on the ground surface to cause an accident. .

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and is directed to a jack device installed on a lower surface of a vehicle such as a communication satellite tracking vehicle, a broadcast vehicle, a medical X-ray vehicle, and a product display vehicle. Even if an oil leak occurs in the hydraulic system of the oil cylinder, rotation and extension of the oil cylinder located in the horizontal state in the downward direction are prevented, and the jack mechanism for stopping the vehicle can be used safely. In addition, when the vehicle stabilization jack mechanism is operated to stabilize the vehicle, quick operation is attempted.

[0006]

SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems by rotatably connecting a lower surface of a vehicle via a main shaft, operating an oil cylinder when the vehicle is stationary, and moving the oil cylinder down to the ground surface. When the jack is not in use, the oil cylinder is actuated to contract when not in use, and in the jack mechanism for stationary vehicle positioned horizontally on the underside of the vehicle, any one of the jack mechanisms is placed in the horizontal position of the jack mechanism. An engaging member is rotatably projected on the upper surface of the member by a support shaft, and an engaging claw is engaged with a lower surface of the engaging portion of the engaging member. Is fixed to the vehicle, the engaging member is pressed by the pressing portion of the actuator, the engaging member is rotated with the support shaft as a fulcrum, and the engagement between the engaging claw and the engaging member can be released. .

The actuator may be formed by an air cylinder.

The actuator may be formed by an oil cylinder.

Further, the actuator may be formed by a solenoid.

[0010]

Since the present invention is constructed as described above, the jack mechanism for stopping the vehicle installed on the lower surface of a vehicle such as a communication satellite tracking car, a broadcasting car, a medical X-ray car, a product exhibition car, etc. In this state, the oil cylinder is positioned horizontally on the underside of the vehicle. The jack mechanism in the housed state has an engaging body rotatably supported by a support shaft on an upper surface of any member of the jack mechanism, and a lower surface of the engaging portion of the engaging body is fixedly protruded from the vehicle. The engaging claw is located at the engaging position.

When operating the jack mechanism in the housed state, first, the actuator fixed to the vehicle is extended. This actuator can be formed by an air cylinder, an oil cylinder, a solenoid, or the like. Due to this extension, the actuator presses the engaging body at the tip of the pressing portion. Therefore, the engaging body pressed by the pressing portion rotates in the pressing direction with the support shaft as a fulcrum, the lower surface of the engaging portion is detached from the engaging claw, and the jack mechanism can be operated.

Conversely, in order to fix the position of the jack mechanism in the housed state, if the jack mechanism is housed in the contracted state of the actuator, the engaging portion of the engaging body of the jack mechanism may have a lower surface. The engaging body and the engaging claw engage with the engaging claw, and the position of the jack mechanism can be fixed.

As described above, in the jack mechanism, in the storage state when not in use, the engagement portion of the engagement body is engaged with the engagement claw on the vehicle side, and the oil cylinder can maintain the horizontal state. Becomes Therefore, even if the operator moves the vehicle without knowing the oil leak in the hydraulic system,
There is no possibility that the oil cylinder turns downward or expands without permission. Therefore, the jack mechanism such as an oil cylinder does not protrude greatly from the lower surface of the vehicle, and the danger-prevented jack mechanism for stopping the vehicle can be used safely.

Further, the jack mechanism for stopping the vehicle can release the fixing of the position by a simple mechanism, so that when the vehicle is stabilized, quick operation is possible.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings.
(Not shown), and by operating the hydraulic pressure of the second system or the like, the piston rod (2) inserted therein can be extended and contracted. The piston rod (2) has a leg at the tip.
(3) is fixed, and a wide grounding plate (5) for the ground surface (4) is provided on the leg portion (3), and the grounding plate (5) can move forward and backward with respect to the ground surface (4). .

The oil cylinder (1) is, as shown in FIG. 1, fixed to a lower surface on both sides of the target vehicle (6).
In (7), the base end is pivotally supported by a main shaft (8), and a rotating lever (10) is pivotally supported on a side surface by a fixed shaft (11).

The rotary lever (10) has a one-side projecting piece (12) and the other projecting piece (13) projecting from both sides in the axial direction of the oil cylinder (1). The one protruding piece (12) is formed shorter than the other protruding piece (13).
(12) is supported on one end of a driving rod (15) by a driving shaft (14), and the other end of the driving rod (15) is connected to a shaft support (16) fixed to the tip of an oil cylinder (1). It is slidably inserted.

Further, as the piston rod (2) contracts, the rotating lever (10) pushes the distal end of the driving rod (15) by a pressing plate (17) provided on the base end side of the leg (3). When pressed, it is rotatable about the fixed shaft (11) as a fulcrum.

The rotating lever (10) has a fixed shaft (11).
One end of the other protruding piece (13) located on the opposite side of the one protruding piece (12) is pivotally supported on the driven rod (20) by a driven shaft (18). Then, one end of the driven rod (20) is supported by a support shaft (21) on a target vehicle (6) located on the axial side surface of the oil cylinder (1), so that the piston rod (2) moves forward and backward. Accordingly, the oil cylinder (1) is formed to be rotatable around the main shaft (8) on the lower surface of the target vehicle (6). The jack mechanism (22) formed as described above is known as a known technique.

When the oil cylinder (1) is in a horizontal position, the jack mechanism (22) is provided with an engaging body (23) on the upper surface of the driven rod (20) as shown in FIG. To protrude rotatably. This engagement body (23) is shown in FIGS.
As shown in FIG. 4, a pair of rotating pieces (25) are supported on a target vehicle (6) by a support shaft (24), and a roller-shaped engaging portion ( 26) is rotatably supported. Further, the formation position of the engagement body (23) is not limited to the driven rod (20), but can be formed on the upper surface of any member of the jack mechanism (22).

The engaging body (23) is provided with a jack mechanism (2).
The engaging claw fixed to the target vehicle (6) in the horizontal state of 2)
At (27), the lower surface of the engaging portion (26) is located and can be engaged. The engaging claw (27) has an arc-shaped tip to facilitate the riding of the engaging portion (26).

Further, the engaging body (23) has a biasing ridge (28) interposed on the rotating piece (25) so as to urge the engaging portion (26) in the direction of the engaging claw (27). . The rotating piece (25) is shown in FIG.
As shown in (1), an abutment surface (30) capable of abutting against the surface of the driven rod (20) at the base end is formed so that the rotating piece (25) can be upright. With this configuration, even when the engaging portion (26) is disengaged from the engaging claw (27), the rotating piece (25) can be driven by the driven rod.
(20) There is no falling in the direction, and the next engaging portion (2
6) and the engagement claw (27) can be easily fixed.

When the engaging portion (26) is positioned at the engaging claw (27), the side surface of the engaging portion (26) is pressed by the pressing portion (23) of the actuator (31). 32). This actuator (31) can be formed by an air cylinder, an oil cylinder, a solenoid or the like. The actuator (31)
It is fixed to a target vehicle (6) via an actuator base (33). Further, the actuator (31) includes a pressing portion.
By extending (32) and pressing the engaging portion (26),
The engagement between the engagement claw (27) and the engagement body (23) can be released. Also, this engaging claw (27) is
It protrudes fixedly to the front side of (33). Further, if the oil cylinder (1) is automatically extended after the actuator (31) is extended, the operation becomes easy.

In the vehicle constructed as described above, a jack mechanism (22) for stopping the vehicle installed on the lower surface of a target vehicle (6) such as a communication satellite tracking vehicle, a broadcasting vehicle, a medical X-ray vehicle, a product exhibition vehicle, etc. In the folded storage state, the oil cylinder (1) is positioned horizontally on the lower surface of the target vehicle (6).

When the jack mechanism (22) is in the retracted state, the pressing plate (1) provided on the leg portion (3) of the piston rod (2).
7) strongly presses the driving rod (15), and the driving rod (15)
The rotation lever (10) connected to the oil cylinder (1) is fixed on the side surface of the oil cylinder (1).

Therefore, if the hydraulic pressure of the hydraulic system of the oil cylinder (1) is constant, the jack mechanism (22) attempts to maintain the stored state. However, if an oil leak or the like occurs in the hydraulic system, the oil cylinder (1) rotates vertically with the main shaft (8) as a fulcrum and extends downward without turning on the jack mechanism (22). May occur.

However, the jack mechanism (2) of the present invention
2) The engaging portion (26) of the engaging body (23) provided on the driven rod (20) is engaged with the engaging claw (27) of the target vehicle (6) in the stored state when not in use. The driven rod (20) is fixed with the oil cylinder (1) engaged and the oil cylinder (1) positioned horizontally.

Therefore, even if the worker moves the vehicle without knowing the oil leak of the hydraulic system, the jack mechanism (22) can rotate the oil cylinder (1) downward or extend it without permission. Nothing to do. A jack mechanism (22) such as an oil cylinder (1) is used for the target vehicle.
There is no large projection from the lower surface of (6), and the danger-prevented jack mechanism for stationary vehicle (22) can be used safely.

Then, the jack mechanism is moved from the above stored state.
To release the fixation of the position of (22), first, the target vehicle (6)
Then, the pressing portion (32) of the actuator (31) fixed to is extended. When this extension is performed, the actuator (31) presses the engaging portion (26) of the engaging body (23) with the tip of the pressing portion (32).

Due to the pressing by the pressing portion (32), the engaging body (23) rotates in the pressing direction against the urging force of the urging strut (28), and the lower surface of the engaging portion (26) is engaged. The jack mechanism (22) is released from the pawl (27), and the jack mechanism (22) can be operated.

The vehicle stationary jack mechanism (22)
Since the fixed position can be released by a simple mechanism, quick operation is possible.

Further, in the above were unlocking position of jack key mechanism (22). Next, in order to make the target vehicle (6) stationary, the piston rod (2) in the contracted state is slid in the extension direction, and the leg (3) of the piston rod (2) is extended. When the leg (3) is in the contracted state of the piston rod (2),
The tip of the driving rod (15) is pressed by the pressing plate (17).

Then, by the operation of extending the leg portion (3), the pressing of the main driving rod (15) by the pressing plate (17) is gradually released, and the driving shaft (16) moves in the inserting direction. Also,
With the movement of the main driving rod (15), the turning lever (10) connected to the main driving rod (15) turns about the fixed shaft (11) as a fulcrum. Then, the horizontal oil cylinder (1) rotates in the direction of gravity with the main shaft (8) as a fulcrum, and hangs from the lower surface of the target vehicle (6).

The suspended state of the oil cylinder (1) is achieved by a rotating lever connecting the fixed shaft (11) and the support shaft (24).
The (10) and the driven rod (20) are expanded to the maximum with the driven shaft (18) as a fulcrum, and the oil cylinder (1) stops at a position perpendicular to the ground surface (4). Also this oil cylinder
Even if (1) is positioned vertically, the piston rod
Since (2) continues sliding in the extension direction, the piston rod (2) descends the leg (3), and the grounding plate (5) of the leg (3) is moved to the ground surface (4). ) To stably stop the target vehicle (6).

[0035] In the above decompresses the jack key mechanism (22), and a target vehicle (6) stationary. Next, the above the jack key mechanism of stretched state in the reverse (22), an embodiment for accommodating folded to the lower surface of the object vehicle (6).

First, the piston rod (2) in the extended state is slid in the contracting direction, and the leg (3) at the tip of the piston rod (2).
Operates in the retraction direction. The main driving rod (15) inserted into the shaft support (16) of the oil cylinder (1) is positioned in the direction in which the leg (3) is inserted. And the pressing plate of the leg (3)
When (17) presses the tip of the driving rod (15), the driving rod (1) is pressed.
5) retreats inside the shaft support (16), and the turning lever (10) connected to the main driving rod (15) turns on the side surface of the oil cylinder (1) with the fixed shaft (11) as a fulcrum.

The rotation of the rotating lever (10) about the fixed shaft (11) as a fulcrum is performed by moving the driven rod (20), which is linearly extended on the extension of the rotating lever (10), with the driven shaft (18). ) As a fulcrum to bend and bend, with the main shaft (8) as a fulcrum, to make an arc on the fixed shaft (11) and the support shaft (21) as a fulcrum to make an arc on the driven shaft (18). Let it do.

Therefore, the distance between the fixed shaft (11) provided on the oil cylinder (1) and the support shaft (24) of the target vehicle (6) is reduced. Then, if the contraction of the piston rod (2) is continued, the oil cylinder is
By turning (1), the jack mechanism (22) can store the oil cylinder (1) in a horizontal state on the lower surface of the target vehicle (6).

In order to fix the position of the jack mechanism (22) simultaneously with the storage of the jack mechanism (22), the actuator (31)
Of the engaging member (23) by contracting the pressing portion (32) of the engaging member (23).
Is set in a state in which it can ride on the engagement claw (27). Further, in this case, the engaging body (23) is moved by the urging member (28).
(26) is raised from the driven rod (20),
(26) is such that the engaging claw (27) can be automatically climbed on and the engagement between the engaging body (23) and the engaging claw (27) can be fixed.

[0040]

Since the present invention is constructed as described above, the jack mechanism installed on the lower surface of a vehicle such as a communication satellite tracking car, a broadcast car, a medical X-ray car, a product display car, etc. In the stowed state, the engagement portion of the engagement body is engaged with the engagement claw on the vehicle side, so that the oil cylinder can be maintained in a horizontal state.

Therefore, even if the operator moves the vehicle without noticing the oil leak in the hydraulic system, the oil cylinder does not rotate downward or extend without permission. Also, the jack mechanism such as an oil cylinder does not protrude greatly from the lower surface of the vehicle, and the danger-prevented jack mechanism for stopping the vehicle can be used safely.

Further, since the position can be released from being fixed by a simple mechanism, quick operation is possible when the vehicle is stabilized.

[Brief description of the drawings]

FIG. 1 is a front view of a jack mechanism.

FIG. 2 is an enlarged front view of a position fixing mechanism.

FIG. 3 is an enlarged plan view of a position fixing mechanism.

FIG. 4 is an enlarged perspective view of a position fixing mechanism.

[Explanation of symbols]

 Reference Signs List 1 oil cylinder 4 ground surface 8 main shaft 22 jack mechanism 23 engaging body 24 support shaft 26 engaging portion 27 engaging claw 31 actuator 32 pressing portion

Claims (4)

(57) [Claims] 1. An oil cylinder is rotatably connected to a lower surface of a vehicle via a main shaft. The oil cylinder is operated when the vehicle is stationary, extends downward to the ground surface, and is contracted by operating the oil cylinder when not in use. In a jack mechanism for stationary vehicle positioned horizontally on the lower surface of the vehicle, an engaging body is rotatably projected by a support shaft on an upper surface of any member of the jack mechanism in a state where the jack mechanism is in a horizontal position. ,
An engagement claw is engaged with the lower surface of the engagement portion of the engagement body, and the engagement claw is positioned.
The engaging claw is fixedly protruded from the vehicle, and the actuator is fixed to the vehicle. The engaging portion is pressed by the pressing portion of the actuator, and the engaging body is rotated about the support shaft, so that the engaging claw and the engaging body A position fixing device for a jack mechanism for stopping a vehicle, wherein the engagement can be released. 2. The position fixing device of a jack mechanism for stopping a vehicle according to claim 1, wherein the actuator is formed by an air cylinder. 3. The position fixing device of a jack mechanism for stopping a vehicle according to claim 1, wherein the actuator is formed by an oil cylinder. 4. The position fixing device of a jack mechanism for stopping a vehicle according to claim 1, wherein the actuator is formed by a solenoid.