JPH0192195A - Positioning installation device for construction work - Google Patents

Abstract

PURPOSE: To reduce the cost of the whole device and improve the operability in working by driving a compressor by the discharge pressure of a hydraulic pump driven by a power engine. CONSTITUTION: This device is constituted in such a manner that a compressor 34 is driven by the discharge pressure of a hydraulic pump driven by a power engine 6. Thus, the loading of the engine for the compressor 34 as in the past is not required. Further, since a control valve with detent is arranged in the lower stream of a traveling control valve, it is not required to switch the ON/ OFF of the compressor hydraulic motor every traveling stop, and the operation is facilitated. Thus, the cost of the whole device can be reduced and, further, since the space for loading the engine for the compressor 34 is not required, the whole device can be miniaturized, and the space on the body can be effectively utilized.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention relates to a positioning and installation device for construction work for installing heavy objects such as concrete split pieces and stones used in construction work.

(Prior art) When positioning and installing a heavy object A such as two-piece concrete or stone for conventional construction work.

Positioning installations such as those shown in FIGS. 3 and 4 use equipment.

The above-mentioned positioning and installation is carried out by placing the device on the vehicle body frame b, which can freely run around two legs a, and the engine C for power and the work machine d9.
Outrigger e1 work equipment d to stabilize the vehicle body during work
A compressor g that operates a vacuum suction bag fif provided at the tip of the compressor g, and a compressor engine h that drives the compressor g.

The driver's seat l etc. are installed in an appropriate arrangement.

When the vehicle is running, the power engine C drives a hydraulic pump (not shown), and the hydraulic oil discharged from the hydraulic pump drives the hydraulic motor provided on the suspension a, thereby driving the vehicle.

During work, the compressor g is driven by the compressor engine h to obtain the driving force necessary for the vacuum suction device f.

(Problems to be Solved by the Invention) In the above conventional positioning installation device, the power engine C
In addition, a compressor engine h is installed separately to drive the compressor g during operation, which makes the device itself expensive.

Start the compressor engine h for each work,
There were problems such as complicated operation because the system had to stop.

(Means and effects for solving the problems) This invention was made for the purpose of improving the above-mentioned problems, and includes an upper rotating body which is rotatably provided on a lower vehicle body which can freely travel around nine legs. By driving the compressor with the discharge pressure of the hydraulic pump driven by the above-mentioned power engine, along with a working machine for positioning and installing heavy objects on the body, the engine for the compressor is no longer required, reducing the cost of the entire device and reducing the cost of 9 operations. The purpose of the present invention is to provide a positioning and installation device for construction work with improved operability.

(Embodiment) An embodiment of the present invention will be described in detail with reference to the drawings shown in FIGS. 1 and 2. In FIG. 1, reference numeral 1 denotes a lower vehicle body that can freely run on a track-type suspension 2.

Outriggers 3 are attached to the front and rear to stabilize the vehicle body 1 during work.

An upper revolving body 5 is rotatably provided on the lower body 1 via a revolving mechanism 4. On the upper revolving body 5, a power engine 6 is installed at the front and rear of the vehicle, and a work Ia7 is installed at the front of the upper revolving body 5. , and a driver's seat 8 is installed between them.

The working machine 7 has a support member 10 rotatably provided on a support column 9 erected at the front of the upper revolving body 5, and a longitudinal long hole 10a formed in the support member 10; The proximal ends of balance arms 11.12, which are provided parallel to each other, are movably supported in the horizontal elongated holes 10b via pins 13.14, and the lower balance arms 1
A balance weight 15 is attached to the base end of 2.

Further, on the tip end side of each balance arm 11, 12, the base end side of a tip arm 17 from which a vacuum suction device 16 is suspended is pivoted by a pin 18, and the tip arm 17 is a balance arm. The posture can be controlled by moving the positions of pins 13 and 14 that support the proximal ends of the pins 11 and 12 along the long holes 10a and 10b using a working machine cylinder (not shown).

On the other hand, the power engine 6 mounted on the upper revolving body 5 drives two hydraulic pumps 20 and 21 shown in FIG. 2, and the hydraulic pressure discharged from these hydraulic pumps 20 and 21 is , lines 22, 23, as follows: line 22 is supplied respectively to a right travel control valve 24 and to a compressor control valve 25 with a detent 25a connected in series with it, and line 23 is supplied with a swivel control valve 2
6 and left travel control valve 27, respectively.

And the oil pressure coming out of the left and right travel control valves 27 and 24 is.

It is supplied to the left and right travel motors 31.32 installed on the lower vehicle body 1 side through the swivel joint 30 provided in the turning mechanism 4 through conduits 28 and 29, and these travel motors 31 and 32 rotate the suspension 2. It is designed to be driven and run.

Further, the hydraulic pressure coming out of the swing control valve 26 is supplied to the swing motor 33 provided in the swing mechanism 4, and the swing motor 33 is
As the upper rotating body 5 is rotated, the hydraulic pressure from the compressor control valve 25 is transferred to a compressor 34 installed on the upper rotating body 5. The compressor 34 is driven by this 5-pressure oil motor 35.

On the other hand, when the respective control valves 24, 25, 26, 27 are in neutral, the discharge pressure of each hydraulic pump 20, 21 is merged from the carryover boat 39 into the pipe line 37, and is transferred by this pipe line 37 via the swivel joint 30. It is introduced into the lower vehicle body l side and supplied to each outrigger 3 provided at the front and rear of the lower vehicle body 1 via an outrigger operation valve 38.

Next, to explain the operation of the positioning and installation device configured as described above, when positioning and installing the vacuum suction device 16 for a heavy object A such as a two-shot concrete product, first, when moving to the work site, the outrigger operation valve group 38 is activated. By operating and supplying hydraulic pressure to the outriggers 3 provided at the front and rear of the lower vehicle body l, each outrigger 3 is extended until it touches the ground.
The lower vehicle body 1 is fixed in a horizontal state with respect to the road surface.

Next, in this state, if the compressor control valve 25 is switched to the operating position and held in that position by the detent 25a,
The hydraulic pressure that has passed through the neutral position of the right travel control valve 24 flows into the compressor motor 35, and the compressor 34 is driven by the compressor motor 35 and becomes in operation.In this state, operate the work equipment control lever 40. The work begins, but since the work machine 7 was conventionally rotated around the support column 9, the work range was limited to the range shown by the imaginary line in FIG. The range shown by the imaginary line in Fig. 3 shows the workable range when the posture of the work equipment 7 is changed.For this reason, in the past, after installing two or three heavy items A, the vehicle body was moved and then the vehicle body was moved again. This required a lot of time in addition to the actual work, resulting in poor work efficiency.

However, in this embodiment, the working machine 7 is grounded in a rotatable manner on the upper revolving structure 5, which is rotatable relative to the lower vehicle body 1.
In addition to the conventional workable range, the workable range can be expanded by the rotation of the upper rotating body 5, so the workable range of one working machine 7 is greatly expanded, and the outrigger 3 that stabilizes the vehicle body during one work is attached to the lower vehicle body. Since it is provided on the l side, the upper rotating body 5 can turn with the lower vehicle body l fixed horizontally by the outriggers 3.

In addition, each outrigger 3 receives hydraulic pressure discharged from a carryover boat 39 of a control valve group provided on the upper rotating body 5 side through a swivel joint 30 provided in the rotating mechanism 4.
This is because it is introduced into the lower vehicle body 1, and is further supplied to the antriggers 3 provided at the front and rear of the lower vehicle body 1 by an outrigger operating valve group 38 provided on the lower vehicle body 1 side to operate these. , swivel joint 30
All you have to do is add two new boats for outriggers (this can be done easily).

On the other hand, when the work at that position is completed and the travel control valves 24 and 27 are operated to move to the primary position.

Since the hydraulic pressure that has been supplied to the compressor motor 35 from the neutral position of the right travel control valve 24 via the compressor control valve 25 is now supplied to the right travel motor 32, the compressor motor 35 is automatically stopped during travel. Ru.

Furthermore, when the lower vehicle body 1 is stopped at the next work position and the right travel control valve 24 is operated to the neutral position, hydraulic pressure is again supplied to the compressor motor 35 and the compressor 34 is driven, so all work is completed. There is no need to operate the compressor control valve 25 until the

In the above embodiment, the compressor control valve 25 is connected in series to the right travel control valve 24, but it may of course be connected to another control valve.

(Effects of the Invention) As described in detail above, this invention drives a compressor with a part of the hydraulic pressure discharged from a hydraulic pump driven by a power engine. There is no need to install it.

Furthermore, since the control valve with a detent is arranged in the circuit downstream of the travel control valve, there is no need to turn on and off the compressor hydraulic motor each time travel is stopped, which simplifies the operation.

This not only reduces the cost of the entire device, but also
Since no space is required to mount the compressor engine, the entire device can be made smaller and space on the vehicle body can be used more effectively.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention; FIG. 1 is a side view, FIG. 2 is a hydraulic circuit diagram, and FIGS. 3 and 4 are conventional illustrations. l...Lower body, 2...Suspension. 5... Upper revolving body, 6... Power engine. 7...Work equipment, 20.21...Hydraulic pump. 34...comple, tsusa. Patent applicant Komatsu Ltd. (and 1 other person) Agent (patent attorney) Osamu Matsuzawa Figure 4

Claims (1)

[Claims] An upper revolving body 5 is rotatably provided on a lower vehicle body 1 which can run freely by means of an undercarriage 2, and a working machine 7 for positioning and installing heavy objects and a power engine 6 are mounted on the upper revolving body 5. A positioning and installation device for construction work that drives a discharge pressure compressor 34 of a hydraulic pump 20, 21 driven by a power engine 6.