JP3390729B2 - Combination unit - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to various working devices such as a tubing device and a hydraulic hammer used for foundation works such as construction and civil engineering, or work equipment used for incidental works such as a welding machine and an impact wrench. The present invention relates to a combination of a hydraulic unit, which is a prime mover, and a generator.

[0002]

2. Description of the Related Art Various works are performed in construction work and civil engineering work, and various work devices are used at work sites. For example, the cast-in-place pile construction method is an all-casing construction method in which a cylindrical casing is pushed into the ground while excavating the soil, the soil in the casing is discharged, and concrete is placed therein. Then, in this all-casing method, first, a rotary pushing device for pushing the casing into the ground, which is called a tubing device, is used. FIG. 5: is the figure which showed the casing pushing process by a tubing apparatus.

The tubing apparatus 100 grips the outer periphery of the inserted casing 101 with chuck means,
The hydraulic motor is rotationally driven to rotate the gripped casing, and a vertically driven cylinder is provided to lower the gripped casing. Therefore, by pushing the casing 101 gripped by the tubing device 100 into the ground while rotating, the casing 101 excavates the earth and sand inside the casing while cutting the boulders and obstacles with the cutting teeth provided at the tip. At 102, it is pushed deep into the ground while being discharged to the outside. However, since one casing 101 is shorter than the planned concrete pile, it is necessary to add the next casing 101 to the casing 101 that has been pushed in to some extent on the way, and an impact wrench is used for the connection.

In the all-casing method, basket-shaped reinforcing bars are inserted into the casing 101 thus pushed into the ground, and concrete is placed therein. After that, the casing 101 gripped by the tubing apparatus 100 is sequentially pulled out while being separated using an impact wrench, and the cast-in-place pile construction is completed.

In such a series of work, a hydraulic unit is used to drive a working device such as a tubing device,
A portable generator is used to drive electric tools such as impact wrenches. Then, as soon as the construction of one pile is completed, it will be moved to the next pile position.At that time, it is necessary to transport the hydraulic unit and the portable generator with the movement of the tubing device, etc. A crane was used, and the suspended hydraulic unit and portable generator were separately transported to the next position.

[0006]

However, if the hydraulic unit and the portable generator are separately conveyed,
As the number of movements increases, the number of times the crane is used to carry the work increases, and as the preparation time increases, the construction time that should be originally performed decreases, resulting in poor work efficiency. In addition, in order to improve work efficiency,
In addition to this, when examining the problems so far at the work site, it was found that the hydraulic unit and the portable generator were refueled separately, and that the labor of such work caused a delay in the work. I noticed that.

Although various things can be considered to improve the work efficiency at the work site, the present inventor has focused on different prime movers used at the same work site. In addition,
Such a problem is not limited to the combination of the hydraulic unit and the portable generator, but also to the combination of the prime mover such as the hydraulic unit and the compressor, or the generator and the compressor, which is used for other construction work and civil engineering work. Is also true.

Therefore, the present invention can transport a plurality of prime movers such as a hydraulic unit and a generator used at the same work site at one time in order to improve such a problem at the work site, and also refueling. The purpose is to provide a combination unit that can be done at once.

[0009]

A combination unit according to the present invention comprises an engine in which each prime mover of a hydraulic unit including a compressor, a generator and a hydraulic pump comprises an engine which can be driven by the same fuel. It is characterized in that one arbitrarily selected from the above is integrally assembled, and a connection flow path that enables fuel supply from the fuel tank of one main prime mover to the engine of another slave prime mover is formed. Therefore, according to the present invention, a plurality of prime movers, such as a hydraulic unit and a portable generator, which have been separately transported up to now, can be transported at one time, and by supplying fuel to one main prime mover, other slaves can be transported. The prime mover could also be driven, and the time and labor required for transportation and refueling could be greatly reduced.

In the combination unit of the present invention, each of the prime movers of the compressor, the generator and the hydraulic unit is constructed on a base member constituting a floor surface, and an extension base is provided on the base of the main prime mover. It is characterized in that it is detachably fixed and the driven motor mounted thereon is detachably fixed. Therefore, according to the present invention, while a plurality of prime movers can be transported at one time, they can be easily separated and transported, so that one prime mover can be flexibly transported and moved as needed on site. You can also let it.

Further, in the combination unit of the present invention, the connection flow path is such that the main prime mover and the slave prime mover are connected by a fuel pipe, and the main prime mover communicates with the fuel pipe. Therefore, an external supply flow passage is formed that includes a cock extending from the fuel tank, and the driven prime mover is connected to a flow passage that connects the fuel tank and the engine via a three-way cock to communicate with the fuel pipe. The external receiving channel is formed. Therefore, according to the present invention, the fuel of the main prime mover can be supplied to the slave prime mover with a simple configuration, and the flow path between the main prime mover and the slave prime mover can be separated by switching the cock, so that the slave prime mover itself It is also possible to drive the fuel in the fuel tank.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION Next, an embodiment of a combination unit according to the present invention will be described with reference to the drawings. Figure 1
Is a front view showing an embodiment of a combination unit,
FIG. 2 is a plan view showing an embodiment of the same combination unit. The combination unit 1 of the present embodiment includes a hydraulic unit 10 for driving a tubing device and a portable generator 20 for driving an impact wrench and a pump, which are used in the all-casing construction method described above.
And the portable generator 20 is attached to the hydraulic unit 10 side.

The hydraulic unit 10 is a base 1 that serves as a mount.
Various components are arranged and assembled on the base 1, and a house 12 is covered so as to cover them.
The house 12 itself has low rigidity, so the hydraulic unit 1
A U-shaped rigid frame 13 capable of supporting 0 is provided in the center, and is fixed to the base 11 so that the entire frame can be lifted. Therefore, two suspension bars 14 and 14 are provided in parallel at both corners of the rigid frame 13, and a wire for suspending with a crane can be hooked there.

Next, the structure of the hydraulic unit 10 will be briefly described. First, as shown by a broken line in FIG. 2, the engine 15 is arranged in the center on the base 11, and the oil storing the working oil is arranged on the left side thereof. A tank 16 and a plurality of pump units 17 that generate hydraulic pressure by the hydraulic oil are arranged. A valve unit 18 that controls the flow of hydraulic oil is provided in front of the engine 15.
Further, a fuel tank 19 is arranged on the right side.

The one portable generator 20 is installed on an extension base 30 projecting from the end face of the hydraulic unit 10 on the fuel tank 19 side. The extension base 30 is composed of a floor plate having an area on which the portable generator 20 is placed, or a frame configured to allow the portable generator to be placed, and with respect to the base 11 of the hydraulic unit 10,
Weld from the side or removably secure with bolts. Then, the base 21 of the portable generator 20 is screwed onto the extension base 30 with bolts so as to be detachably fixed. In this way, the portable generator 20 is provided on the fuel tank 19 side of the hydraulic unit 10,
This is because fuel is drawn from the fuel tank 19 of the hydraulic unit 10 to drive the portable generator 20.

Therefore, in the combination unit 1 of this embodiment, the hydraulic unit 10 and the portable generator 20 are connected to two fuel hoses 31 and 32 as shown in FIG. FIG. 3 is a side view showing the combination unit 1 from the portable generator 20 side. The fuel hoses 31 and 32 are connected to the self-sealing couplings 33 and 34 protruding from the base 11 of the hydraulic unit 10 and the self-sealing couplings 45 and 46 protruding from the base of the portable generator 20. ing. Two fuel hoses 31 and 32 are provided, one on the fuel supply side and one on the fuel return side. From the fuel tank 19 of the hydraulic unit 10 to the engine of the portable generator 20 via the fuel hose 31 on the fuel supply side, A flow path is formed so that the fuel flows in the opposite direction through the fuel hose 32 on the fuel return side.

Next, FIG. 4 is a block diagram showing a fuel supply flow path and a return flow path configured in such a combination unit 1. First, a diesel engine is used as the hydraulic unit 10, and flow paths 51 and 52 for supplying and returning fuel (light oil) from the fuel tank 19 to the engine are provided. In the present embodiment, the fuel tank is further provided. 19
To the external self-seal couplings 33, 34 to enable external supply of fuel from the fuel cocks 35, 3
A supply flow path 37 and a return flow path 38 via 6 are formed.

On the other hand, the portable generator 20 uses the same diesel engine as the hydraulic unit 10 and is driven by light oil. The portable generator 20 has the fuel tank 22 itself, but the hydraulic unit 10
It can be driven by the fuel supplied from the fuel tank 19 of FIG. Therefore, the portable generator 20 has a fuel tank 22 and an engine 23 which are originally provided.
Branch flow passages 43 and 44 are respectively formed in the supply flow passage 39 and the return flow passage 40 that connect to each other via three-way cocks 41 and 42, and externally attached self-sealing couplings 45 and 46
A flow path for connecting the engine 23 to the engine is provided.

Therefore, the combination unit 1 having such a configuration
Then, if the fuel cocks 35, 36 of the hydraulic unit 10 are opened and the three-way cocks 41, 42 of the portable generator 20 are switched to the branch flow passages 43, 44 side, the fuel of the hydraulic unit 10 of the portable generator 20 is changed. It can be supplied to the engine 23. That is, the fuel of the hydraulic unit 10 is supplied to the supply passage 3
7 through the fuel hose 31 on the supply side connected to the self-sealing coupling 33 via the fuel cock 35 and flows to the portable generator 20 side. Then, the fuel that has flowed to the portable generator 20 is supplied to the engine 23 through the three-way cock 41.

A part of the fuel leaked from the engine 23 is returned to the fuel tank again. That is, three-way cock 4
Fuel tank 1 of hydraulic unit 10 by switching 2
When the fuel is flown back to 9, the fuel flowing from the three-way cock 42 to the branch passage 44 flows from the portable generator 20 through the fuel hose 32 on the return side, and returns to the fuel tank 19 of the hydraulic unit 10. It will be.

On the other hand, when the portable generator 20 uses the fuel in its own fuel tank 22, the three-way cock 4
1, 42 are switched in reverse to cut off the connection with the branch flow passages 43, 44 and connect the fuel tank 22 and the engine 23. Then, the fuel in the fuel tank 22 is supplied to the engine 23 through the supply passage 39, and the fuel leaking therefrom flows through the return passage 40 and is returned to the fuel tank 22 again.

By combining the hydraulic unit 10 and the portable generator 20 in the combination unit 1 as described above, it is possible to carry out the carrying work which has been performed twice until now only once. A crane is used to convey the combination unit 1, and at that time, the hydraulic unit 10 is used.
One wire is hung on the two hanging bars 14 and 14 provided on the vehicle via metal fittings, and the hook hung from the crane is hooked on the wire. Then, in the combination unit 1, when the hook is pulled up by the crane, the portable generator 20 integrated with the hydraulic unit 10 is also lifted and conveyed via the extension base 30.

By the way, in the combination unit 1, since only the two fuel hoses 31 and 32 are directly connected to the hydraulic unit 10 and the portable generator 20, if the two fuel hoses 31 and 32 are removed, the portable generator 20 is hydraulically operated. It can be independent of the unit 10. The joint connecting the fuel hoses 31, 32 has a self-sealing coupling 33, 34, 45.46.
Is used, which is equipped with a valve that prevents fuel from flowing out by disconnecting the hose.
The fuel hoses 31 and 32 can be connected and disconnected by a simple attaching / detaching operation.

Then, the portable generator 20 is extended to the base 3
0 or the extension base 30 with the portable generator 20 mounted thereon can be removed from the base 11 of the hydraulic unit 10, so that only the portable generator 20 is transported to another work place by such separation work. Is possible. The portable generator 20 is mainly used in one place mainly with the hydraulic unit, but since it is used for tools in various works or various welding works in a construction site, for example, in the same site. There is also a case where it is desired to carry it to a place apart from the pile construction using the hydraulic unit 10 when something needs to be repaired at another place. Therefore, in such cases,
It would be convenient if the portable generator 20 could be transported independently of the hydraulic unit 10.

Therefore, according to the combination unit 1 of this embodiment, the hydraulic unit 10 and the portable generator 20 which have been separately conveyed can be conveyed at one time. The work can be completed in a short time, and the transfer work can be halved.
Further, since the hydraulic unit 10 itself can be driven by the fuel in the hydraulic unit 10 as well as the portable generator 20, it is only necessary to refuel the hydraulic unit 10, which reduces labor and time. Could be achieved. Therefore, the combination unit 1 of the present embodiment can solve the problems of transportation and refueling at the same time.

The present invention is not limited to the above-mentioned embodiment, and various modifications can be made without departing from the spirit of the invention. In the above embodiment, the hydraulic unit 10 and the portable generator 20 are integrated as an example of the combination unit 1. However, in addition to the combination, for example, a hydraulic unit and a compressor, or a generator and a compressor. Combinations of the above are possible. In that case, the same effect as that of the above-described embodiment can be obtained by integrating the hydraulic unit or the generator and the compressor via the base to form a flow path similar to that in FIG. Further, in the above-described embodiment, the fuel of the hydraulic unit 10 is directly supplied to the engine 23 of the portable generator 20, but the fuel tank 22 of the portable generator 20 is used.
You may make it supply via.

[0027]

According to the present invention, each prime mover of a hydraulic unit including a compressor, a generator and a hydraulic pump is provided with an engine that can be driven by the same fuel, and one selected from the plurality of prime movers can be selected. Since they are assembled together and a connection flow passage that enables fuel supply from the fuel tank of one prime mover to the engine of another slave prime mover is formed,
It has become possible to provide a combination unit that can transport multiple prime movers such as hydraulic units and generators used at the same work site at the same time, and that can refuel at the same time.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of a combination unit according to the present invention.

FIG. 2 is a plan view showing an embodiment of a combination unit according to the present invention.

FIG. 3 is a side view showing an embodiment of a combination unit according to the present invention.

FIG. 4 is a block diagram showing a fuel supply passage and a return passage formed in the combination unit 1.

FIG. 5 is a diagram showing a casing pushing step by the tubing device.

[Explanation of symbols]

1 combination unit 10 hydraulic unit 11 base 14 hanging bar 19 Fuel tank 20 Portable generator 21 base 22 Fuel tank 23 engine 31,32 Fuel hose

─────────────────────────────────────────────────── ─── Continuation of front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) F02B 67/00 F02B 63/04 F02B 63/06 F15B 1/00 B60K 15/02 F02M 37/00

Claims (3)

(57) [Claims] 1. A prime mover of a hydraulic unit including a compressor, a generator, and a hydraulic pump is provided with an engine that can be driven by the same fuel, and one arbitrarily selected from the plurality of prime movers is integrally assembled, A combination unit characterized in that a connection flow passage is formed to allow fuel to be supplied from a fuel tank of one primary prime mover to an engine of another secondary prime mover. 2. The combination unit according to claim 1, wherein each of the prime movers of the compressor, the generator and the hydraulic unit is formed on a base member constituting a floor surface, and the base of the main prime mover. A combination unit, wherein an extension base is detachably fixed, and the driven motor mounted thereon is detachably fixed. 3. The combination unit according to claim 1 or 2, wherein the connection flow path is configured such that the main prime mover and the slave prime mover are connected by a fuel pipe, and the main prime mover is An external supply flow path including a cock extending from the fuel tank for communicating with the fuel pipe is formed, and the driven motor is provided in a flow path connecting the fuel tank and the engine for communicating with the fuel pipe. A combination unit, characterized in that an external receiving flow path connected via a three-way cock is formed.