JPH0341199Y2 - - Google Patents

Description

[Detailed explanation of the idea] (Industrial application field) The present invention relates to a hydraulic universal support device.

(Prior Art) A conventional hydraulic universal support device is shown in FIG. Its function is to fix the hydraulic flexible support device to a fixing member (not shown) using a fixing screw 116, and to attach the ball joint 114,
122 and the rotating ring 108 which is rotatably fitted on the cylinder unit 100.
The positions of the arm 110 and the second arm 118 are arbitrarily set, and the ball joint 122 attached to the tip of the second arm 118 is moved, and the supporting device is attached to the fixture 1.
26, set it at any position, and turn the handle 1
06, the plunger 104 applies pressure to the oil in the cylinder 102 and chambers 112, 120, causing the ball joints 114, 122, the first arm 110, the second arm 118, and the rotation ring 108
This is to fix the position of.

(Problems to be solved by the invention) However, the conventional hydraulic universal support device has the following problems.

For example, when the handle is loosened in an attempt to change the support angle, all movable parts, including the ball joints at both ends and the rotating ring, come loose.

Therefore, there is a problem in that once the hydraulic pressure is loosened, the equipment must be set up again from the beginning.

Furthermore, when the hydraulic pressure is released, the entire device becomes loose, which causes the supported machine to fall in an unexpected direction, resulting in damage to the machine.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a hydraulic universal support device in which one ball joint does not become loosened even when the hydraulic pressure is released.

(Means for Solving the Problems) In order to solve the above problems, the present invention has the following configuration.

That is, a cylinder unit formed with a cylinder is provided, the arm is rotatably fixed to the cylinder unit, first and second arms having a through hole connected to the cylinder are provided inside, and the cylinder and the through hole are connected to each other. A hydraulic flexible support device that is provided with a plunger that pressurizes and depressurizes oil, and that fixes ball joints arranged at the tips of the first and second arms at arbitrary angles by pressurizing the plunger,
A communication path is bored through the cylinder unit and communicates with the through hole of the arm whose end is fixed to the cylinder unit, and intersects with the cylinder, and the communication path and the through hole communicating with the communication path are formed. A pressing member movable in the length direction is disposed throughout the communication path, and a pressing means for adjusting the pressing force on the pressing member is disposed at an opening on the opposite side of the communication path from the arm. do.

(effect) The operation will be explained with reference to FIG.

The lock knob 22, which is a pressing means, is rotated in the tightening direction, and the sliding body 28, whose tip is a pressing member, is rotated in the tightening direction.
When the end on the lock knob 22 side of the slider 28a is pressed, the end on the first arm 26a side of the sliding body 28a presses the end on the cylinder 16 side of the rod 38a, which is a pressing member. Then, the end of the rod 38a on the side of the ball joint 40a presses the end of the pressing body 42a on the cylinder 16 side, and the pressing body 42a presses the ball portion 56a to close the ball joint 4.
0a is fixed regardless of oil pressure.

(Example) Hereinafter, a preferred example of the present invention will be described in detail with reference to FIG. 1.

First, let's talk about the configuration.

Reference numeral 10 denotes a handle, and a female thread is formed inside the extension portion 12, and by rotating this handle 10, the pressure on the oil can be adjusted.

14 is a cylinder unit, and a cylinder 16 filled with oil is formed in the center.

A plunger 18 is installed inside the cylinder 16 so as to be slidable in the vertical direction in the drawing.

The upper part of the cylinder 16 of the cylinder unit 14 protrudes from the upper surface of the cylinder unit 14, and a male thread is formed on the outer periphery, and the extending portion 12 of the handle 10 is screwed onto the male thread. Therefore, the top of the plunger 18 abuts against the ceiling inside the extension part 12 of the handle 10.
As the handle 10 moves up and down in the drawing, the plunger 18 slides within the cylinder 16 to increase and decrease pressure on the oil.

Reference numeral 20 denotes a communication hole, which is bored to connect both sides of the cylinder unit 14.
It is provided at a position orthogonal to 6.

The communication hole 20 is formed to have a large diameter near both ends, and a female thread is formed at the left end in the drawing, into which a lock knob 22, which will be described later, is screwed. The center part of the communication hole 20 is perpendicular to the cylinder 16, and is located in the cylinder 1 in the drawing.
The right end of the communication hole 20, which is formed to have a slightly larger diameter on the right side of the cylinder unit 6, is further formed to have a larger diameter by providing a stepped portion 24, and extends to the right end of the cylinder unit 14 in the drawing. is formed, and a first arm 26a, which will be described later, is screwed onto it.

28a is a sliding body serving as a pressing member;
0 in the length direction of the communicating hole 20. Its shape is that the left half of the drawing is the small diameter part 30.
The right half is formed as a large diameter portion 32.

Therefore, the stepped portion 24 and the large diameter portion 32 of the communication hole 20 are engaged, and the amount of movement is regulated. Also, the small diameter part 3
0 passes through the cylinder 16 and slides into the inner wall of the communication hole 20 on the left side of the cylinder 16 in the drawing, and loosely fits in the communication hole 20 on the right side of the cylinder 16 in the drawing. This is because the diameters of the communication holes 20 differ slightly across the cylinder 16 as described above.

Reference numeral 22 denotes a lock knob serving as a pressing means, which is screwed onto one end of the communication hole 20, and has a small diameter protrusion 34 protruding from its tip for pushing the small diameter portion 30 of the sliding body 28a. ing.

The first arm 26a is screwed onto one end of the communication hole 20 as described above. The center thereof is formed into a hollow through hole 36a. Through hole 3
A metal rod 38a is inserted into the through hole 36a inside the rod 6a.
It is loosely inserted so that it can move freely in the length direction. The rod 38a does not necessarily have to be made of metal, and may be made of ceramic, resin, or the like as long as it has sufficient rigidity and elasticity. Both ends of the rod 38a, which is a pressing member, are connected to the end surface of the sliding body 28a on the first arm 26a side and the first
The pusher 42a of the ball joint 40a disposed at the tip of the arm 26a can come into contact with the end surface on the cylinder unit 14 side.

Reference numeral 44 denotes an extended shaft portion of the cylinder unit 14 extending downward in the drawing, and a rotation ring 46, which will be described later, rotates around this extended shaft portion 44.

Reference numeral 46 designates a rotating ring, which is provided with a through hole 48 in the center, through which the extending shaft portion 44 of the cylinder unit 14 is inserted.
is configured to be rotatable. In order to prevent the rotating ring 46 from coming off the extended shaft 44, a coupler 50 is screwed onto the tip of the extended shaft 44.

Similar to the cylinder unit 14, the rotary ring 46 is also provided with a connecting hole 52 for fixing the second arm 26a, and the second arm 26b is screwed into the connecting hole 52.

The connection hole 52 is connected to the cylinder 16 through a communication path 54a,
54b, and the connection hole 52 is connected to ensure a hydraulic circuit even when the rotation ring 46 rotates.
is always in communication with the communication path 54c to close the hydraulic circuit.

Reference numeral 28b denotes a sliding body, which is disposed within the connection hole 52 and can slide upon receiving hydraulic pressure on the end face on the cylinder 16 side.

The center of the second arm 26b is formed in a hollow through hole 36b. A metal rod 38b is loosely inserted into the through hole 36b so as to be movable in the length direction of the through hole 36b. The rod 38b can be made of the same material as the rod 38a, but does not necessarily need to be made of an elastic material. Both ends of the rod 38b touch the end surface of the second arm 26b of the sliding body 28b, and the second arm 26b side end surface of the sliding body 28b.
It is disposed at the tip of b and can come into contact with the end surface on the rotating ring 46 side of the pressing body 42b of the ball joint 40b.

Note that both rods 26a and 26b have rounded ends. The ends of both rods 26a and 26b on the cylinder 16 side are connected to sliding bodies 28a and 28b, respectively.
The cylinder 16 is in contact with the opposite end surface of the cylinder 16 .
The contact portion on the side of the sliding bodies 28a and 28b is a rod 38.
They are rounded to correspond to the roundness of the ends a and 38b. Sliding body 28a of both rods 38a, 38b,
The end opposite to 28b enters ball joints 40a and 40b to which the ends of both arms 26a and 26b opposite to the cylinder 16 side are fixed, and the ball part 56
The ball joints 42a, 42b are in contact with the side surfaces opposite to the ball portions 56a, 56b of the pressing bodies 42a, 42b for fixing the angles of the ball joints 40a, 40b by pressing the ball joints 40a, 56b. Rods 38a, 38 of pressing bodies 42a, 42b
The contact portion with b is also the rod 3 of the sliding bodies 28a, 28b.
8a, 38b, the rods 38a,
It is carved in a round shape corresponding to the tip of 38b.

A fixture 58 is fixed to a base (not shown) or the like.

Reference numeral 60 is a mounting tool, and a measuring device (not shown) is attached to the tip.
etc. are fixed as appropriate.

The hydraulic universal support device according to the present invention is constructed as described above, and its operation will be described next.

First, the case of tightening using only hydraulic pressure will be explained.

When the handle 10 is rotated in the tightening direction, the handle 10 presses the top of the plunger 18 upward and downward in the drawing. The lower end of plunger 18 then applies pressure to the oil.

Then, the oil passes through the cylinder 16 and the right side of the cylinder 16 in the drawing of the communication hole 20, and applies pressure to the end surface of the sliding body 28a on the cylinder 16 side. At the same time, pressure is applied to the end surface of the sliding body 28b on the cylinder 16 side via the cylinder 16 and the communication holes 54a and 54b.

Both the sliders 28a and 28b to which pressure is applied are pressed in the opposite direction to the cylinder 16 and slide. At this time, the sliding bodies 28a, 28b push the rods 38a, 38b, respectively, in the direction of the ball joints 40a, 40b. Ball joints 40a, 40b of rods 38a, 38b pushed in the direction of ball joints 40a, 40b
The side tips press the pressing bodies 42a, 42b toward the ball portions 56a, 56b, respectively. Pressing body 42
When the ball portions 56a, 42b press against the ball portions 56a, 56b, the ball joints 40a, 40b are fixed, and the pressure applied between the rotary ring 46 and the coupler 50 causes the cylinder unit 14 to be pressed toward the rotary ring 46, and the entire device is fixed in an arbitrary state.

Next, a case will be described in which the ball joint 40a at the tip of the first arm 26a is fixed and the hydraulic pressure is released.

Following the tightening using only the hydraulic pressure, the lock knob 22 is rotated in the tightening direction. Then, the protrusion 34 at the tip of the lock knob 22 touches the slider 28.
Press the tip of the small diameter portion 30 of a toward the first arm 26a. The sliding body 28a presses the rod 38a by the pressure of the lock knob 22 in addition to the hydraulic pressure, and mechanically fixes the ball joint 40a.

When it is confirmed that the lock knob 22 is pressed, the handle 10 is rotated in the loosening direction to release the hydraulic pressure, and the pressure applied to the oil decreases and the oil level rises in the drawing. Therefore, the sliding body 28b is released from the hydraulic pressure,
Slides toward the cylinder 16 side. Then Rod 38b
The pressing of the rod 38b is released, and the pressing body 4 is pressed by the rod 38b.
2b is also released, and the pressing body 4 of the ball joint 40b
2b's pressure on the ball portion 56b is also released. However, due to the restoring force (reaction force) due to the elasticity of the rod 38a, the lock knob 22, the sliding body 28a, and the pressing body 4
Since 2a continues to be mechanically pressed, the ball joint 40a
never loosens.

To loosen the ball joint 40a, rotate the handle 10 again in the tightening direction, apply hydraulic pressure, and then rotate the lock knob 22 in the loosening direction to release the contact between the protrusion 34 of the lock knob 22 and the sliding body 28a. The fixation of the ball joint 40a is released.

Next, we will discuss an example of how the operation is applied.

First, use the lock knob 22 to lock the first arm 26a.
Fix it completely and decide your general posture. At this time, there is no hydraulic pressure in the second arm 26b, but the posture of the second arm 26b is determined by applying some hydraulic pressure, and the posture of the second arm 26b is adjusted by pushing with the hand.
To securely fix a handle 10 at an accurate position. According to this operating method, the first and second arms 26a, 2
More accurate positioning can be achieved than the method of fixing 6b at the same time.

First, the first and second arms 26a, 26b are simultaneously set in a predetermined posture using the handle 10 (at this time, the lock knob 22 is loosened). Next, tighten the lock knob 22 so that only the second arm 26b is free or in a semi-free state where you can freely change the posture by pushing it with your hand, and then tighten the lock knob 22.
Loosen 0. At this time, the rod 38a is first bent by the hydraulic pressure, and when the handle 10 is loosened, the restoring force (reaction force) of the rod 38a is applied to the lock knob 22. Then, the rod 38a moves to the sliding body 28.
Ball joint 4 with the end surface on the rod 38a side of a as the fixed end.
In an attempt to extend in the 0a direction, the pressing body 42a is pushed toward the tip by the restoring force, and the ball joint 40a is fixed. Therefore, the same applies to the above application example, but
Since the rod 38a requires restoring force, sufficient elasticity (although not very large) and rigidity are required. Since the sliding body 28a can maintain its position even if the oil pressure is lowered in this way, the rod 38a continues to hold the restoring force as a reaction force, and the first arm 26a
remains in position. Next, the second arm 26
By finely adjusting b to determine the position and tightening the handle 10, the attitude of the entire device is determined accurately.

Note that in order to free the entire device, first loosen the lock knob 22 and then loosen the handle 10.

Although various preferred embodiments of the present invention have been described above, the present invention is not limited to the above-mentioned embodiments, and it goes without saying that many modifications can be made without departing from the spirit of the invention. .

(Effect of the invention) When the hydraulic flexible support device according to the invention is used,
Since it is possible to prevent the entire device from loosening at the same time when the hydraulic pressure is released, it is possible to prevent supported equipment, etc. from falling over.

Also, since only one arm can be loosened, it is easy to adjust the position, angle, etc.

Furthermore, by adjusting both hydraulic pressure and mechanical pressure when making adjustments, there is an effect that accurate fine adjustments can be easily made.

[Brief explanation of drawings]

FIG. 1 is a front sectional view of a hydraulic universal support device according to the present invention, and FIG. 2 is a front sectional view of a conventional hydraulic universal support device. 10... Handle, 14... Cylinder unit, 16... Cylinder, 18... Plunger, 2
0...Communication hole, 22...Lock knob, 26a...
...First arm, 26b...Second arm, 28a, 28
b...Sliding body, 36a, 36b...Through hole, 38
a, 38b...rod, 40a, 40b...ball joint, 42a, 42b...pressing body, 46...rotating ring.

Claims (1)

[Scope of claim for utility model registration] A cylinder unit forming a cylinder is provided,
First and second arms are rotatably fixed to the cylinder unit and have a through hole connected to the cylinder inside, a plunger is provided for pressurizing and depressurizing the oil in the cylinder and the through hole, and the plunger is rotatably fixed to the cylinder unit. The first and second
A hydraulic swivel support device for fixing a ball joint disposed at the tip of an arm at an arbitrary angle, which passes through the cylinder unit and communicates with a through hole in the arm whose end is fixed to the cylinder unit, A communication path is bored that intersects with the communication path, and a pressing member that is movable in the length direction is arranged across the communication path and the through hole communicating with the communication path, and A hydraulic flexible support device, characterized in that a pressing means for adjusting the pressing force on the pressing member is disposed in the opening.