JP6085486B2 - Hydraulic work machine - Google Patents

Description

  TECHNICAL FIELD The present invention relates to a hydraulic work machine, and more particularly to an emergency escape device that can cause a hydraulic work machine to escape from a work place to a safe place when an abnormality occurs in a hydraulic pump or the like and the self-propelled machine cannot be operated. In particular, the present invention relates to a hydraulic work machine that can be carried into a narrow work site and can be urgently escaped from such a place.

  Hydraulic working machines such as pile driving machines equipped with traveling devices that are operated by pressure oil supplied from a hydraulic pump driven by an engine are used for laying and maintenance work on railway tracks and maintenance work for surrounding facilities. ing. Usually, the work on the railway track is performed after the last train passes and before the first train starts operation, and it is necessary to evacuate the railway track immediately after the work is completed. In this case, it is usually possible to evacuate by driving the traveling device with the power of the hydraulic work machine, but when the engine stops due to unforeseen circumstances and the engine cannot be started, the train will continue until it evacuates from the railway track. Passage of the train must be stopped, causing the train schedule to be disturbed.

  Therefore, as described in Patent Document 1 below, a device for operating the hydraulic pressure of the traveling device using an external power source even when the engine is stopped and urgently escaping the hydraulic working machine out of the railroad track. There is. This device is equipped with a pump motor unit that is driven by connecting to an external power source in the main body of the hydraulic working machine. When an abnormality occurs in the engine, the traveling device is driven by the pressure oil generated by the pump motor unit. Is operated to cause the hydraulic working machine to escape from the track.

Public Utility Heisei 3-50605

  The device as described in Patent Document 1 is like a conventional hydraulic work machine provided with an emergency escape device, and the work machine as a whole is structurally enlarged.

  By the way, if the work site is a place that is wide enough in the horizontal direction and has no height restrictions, the above devices can be used. In a difficult work site, even an ordinary hydraulic work machine is difficult to carry in, and even an emergency escape device attached cannot be carried in.

  In view of the above circumstances, the present invention can be carried into a narrow work site such as under a railway overhead line or a platform of a station. It is an object of the present invention to provide a hydraulic working machine that can cause the hydraulic working machine to escape from a work place to a safe place when the time is reached.

Means for solving the above problems will be described with reference numerals of the embodiments described later. The invention according to claim 1 includes a work machine main body 1 provided with a traveling device 9 operated by pressure oil, and A hydraulic working machine comprising an emergency escape device comprising a self-propelled electric hydraulic unit 3 and a generator unit 4,
The electric hydraulic unit 3 includes an electric motor 17, an electric hydraulic pump 18 driven by the electric motor 17, an oil tank 19, and a traveling device 20 operated by pressure oil. The generator unit 4 includes a generator. 23, an electric motor 24 driven by electric power from the generator 23, an electric hydraulic pump 25 driven by the electric motor 24, an engine pump 22, an oil tank 26, and a traveling device 27 operated by pressure oil. When hydraulic pumps etc. break down, pressure oil can be supplied via hydraulic hoses 29, 30, 31 between work implement body 1, electric hydraulic unit 3, and generator unit 4. It is characterized by.

  According to a second aspect of the present invention, in the hydraulic work machine according to the first aspect, the generator unit 4 can be connected to an engine pump 5 different from the engine pump 22 by a hydraulic hose 33 from the outside. To do.

The invention according to claim 3 is a hydraulic work machine comprising a work machine body 1 provided with a traveling device 9 that is operated by pressure oil, and an emergency escape device 2 capable of self-running.
The emergency escape device 2 includes a main body engine pump 34, an engine pump 35 that is smaller than the main body engine pump 34, an oil tank 34, and a traveling device 37 that is operated by pressure oil. And the emergency escape device 2 can be supplied with pressure oil via a hydraulic hose 39.

  According to a fourth aspect of the present invention, in the hydraulic work machine according to the third aspect, the emergency escape device 2 is provided with an external engine pump 5 different from the built-in main body engine pump 34 and small engine pump 35 via the hydraulic hose 33. It is possible to connect with each other.

  According to a fifth aspect of the present invention, in the hydraulic working machine according to the first or second aspect, the distance between the preceding working machine body 1 and the electric hydraulic unit 3 of the emergency escape device 2, and the electric hydraulic unit 3 and the generator Follow-up traveling that controls the traveling of the units 3 and 4 to change the direction of the units 3 and 4 according to the change of the direction of the work machine body 1 when the working machine body 1 changes the direction while maintaining the distance between the units 4 constant. A control device is provided.

  Claim 6 is the hydraulic work machine according to claim 3 or 4, wherein the work machine body 1 changes direction while maintaining a constant distance between the preceding work machine body 1 and the emergency escape device 6. And a follow-up travel control device for controlling the travel of the emergency escape device 6 so as to change the direction of the emergency escape device 6 accordingly.

  The effect of the invention by the above solution will be described with reference numerals of embodiments to be described later. According to the invention according to claim 1, the hydraulic working machine is provided with a traveling device 9 that operates with pressure oil. Since the work implement main body 1 and the emergency escape device 2 composed of the self-propelled electric hydraulic unit 3 and the generator unit 4 are separately configured, the work implement main body 1 and the electric hydraulic unit 3 of the emergency escape device 2 are provided. The generator unit 4 can be reduced in size and can be carried into a narrow work site such as under a railway overhead line or a platform of a station.

  And, for example, when the hydraulic pump 18 of the emergency escape device 2 breaks down during the operation of the hydraulic working machine, the hydraulic hoses 29, 30, 31 between the working machine main body 1, the electric hydraulic unit 3 and the generator unit 4. As a result of the connection being appropriately made, the traveling device 9 of the work implement main body 1 can be operated to urgently escape the work implement main body 1 from the work site to a safe place. In this case, even if the prime mover or pump of the electric hydraulic unit 3 or the generator unit 4 breaks down, the electric hydraulic unit 3 is connected by the interconnection of the hydraulic working machine 1, the electric hydraulic unit 3 and the generator unit 4. The traveling device 20 and the traveling device 27 of the generator unit 4 can be operated and moved to a required place.

  Further, when the generator 23 of the generator unit 4 is broken or there is no external power source near the work site, the oil in the oil tank 26 is pressurized by operating the engine pump 22 of the generator unit 4. The pressure oil is supplied to the traveling device 27, supplied to the traveling device 20 of the electric hydraulic unit 3 via the hydraulic hose 30, and supplied to the traveling device 9 of the work machine body 1 via the hydraulic hose 31. By doing so, the emergency escape of the work machine body 1, the electric hydraulic unit 3 and the generator unit 4 can be achieved.

  According to the second aspect of the present invention, when the engine pump 22 mounted on the generator unit 4 is out of order, the external engine pump 5 is connected to the generator unit 4 side via the hydraulic hose 33. Thus, the oil in the oil tank 26 is pressurized, the pressurized oil is supplied to the traveling device 27, supplied to the traveling device 20 of the electric hydraulic unit 3 via the hydraulic hose 30, and via the hydraulic hose 31. By supplying to the traveling device 9 of the work machine body 1, the work machine body 1, the electric hydraulic unit 3 and the generator unit 4 can be urgently escaped.

  According to the third aspect of the invention, the hydraulic working machine is divided into the working machine main body 1 having the traveling device 9 that is operated by pressure oil and the emergency escape device 6 that is capable of self-running. The machine main body 1 and the emergency escape device 6 can be reduced in size narrowly, and these can be carried into a narrow work site such as a railway overhead line or a station platform. Further, according to the present invention, since no generator is used, two hydraulic working machines, that is, the working machine main body 1 and the emergency escape device 6, are required, and therefore the work at the time of emergency escape becomes easy. Further, since the emergency escape device 6 incorporates a small engine pump 35 separately from the main body engine pump 34, if the main engine pump 34 breaks down, a small engine pump 35 different from the main body engine pump 34 is provided. In use, the engine pump 35 pressurizes oil from the oil tank 36 and supplies the pressurized oil to the work machine body 1 side via the hydraulic hose 39 and also to the traveling device 37 of the emergency escape device 6. Thus, the emergency escape of the work implement body 1 and the emergency escape device 6 can be achieved.

  According to the fourth aspect of the invention, the emergency escape device 2 can be connected to the external engine pump 5 other than the built-in main engine pump 34 and the small engine pump 35. When both the pump 34 and the small engine pump 35 are out of order, the traveling device 37 of the emergency escape device 6 is operated by connecting the external engine pump 5 to the emergency escape device 6 side via the hydraulic hose 33. At the same time, emergency escape can be achieved by supplying the hydraulic working machine 1 side via the hydraulic hose 39 and operating the traveling device 9.

  According to the fifth aspect of the present invention, by providing the follow-up travel control device, one operator can control the three operating units, the electric hydraulic unit 3 and the generator unit 4 of the work implement body 1 and the emergency escape device 2. Only the work machine body 1 can be operated.

  According to the sixth aspect of the present invention, by providing the follow-up traveling control device, the two operations of the work implement main body 1 and the emergency escape device 6 can be performed only by the operation of the work implement main body 1 by one worker.

It is a side view which shows the emergency escape apparatus of the hydraulic working machine which concerns on this invention. It is a side view which shows the emergency escape apparatus of the other hydraulic working machine which concerns on this invention. It is a flowchart which shows the following traveling control of the hydraulic working machine of FIG. 3 is a flowchart showing follow-up traveling control of the hydraulic working machine in FIG. 2.

  A preferred embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows a hydraulic working machine according to the present invention, which includes a working machine body 1 having a traveling device 9 operated by pressure oil, An emergency escape device comprising an electric hydraulic unit 3 and a generator unit 4 each capable of running independently is constituted.

  Here, the work machine body 1 is composed of a pile driving machine, and a crawler type traveling device 9, a revolving body 10 provided on the traveling device 9 so as to be able to swivel, and a undulation at a front portion of the revolving body 10. A reader 11 is provided, and an auger drive device 13 is provided as a working device provided on a lift frame 12 that is lifted and lowered by a lift drive means (not shown) along the reader 11. Since the work machine body 1 does not include an engine, a hydraulic tank, and a hydraulic pump, the work machine body 1 can be reduced in size, and its width is half of the width (1500 mm) of a conventional hydraulic work machine (pile driver). It is about (750 mm). The traveling device 9, the auger drive device 13, and the like of the work machine main body 1 are operated by receiving supply of pressure oil from the electric hydraulic unit 3 or the generator unit 4.

  One electric hydraulic unit 3 constituting the emergency escape device 2 includes an electric motor (electric motor) 17, an electric hydraulic pump 18 driven by the electric motor 17, an oil tank 19, and a hydraulic circuit ( And a crawler type traveling device 20 that is operated by pressure oil supplied via a motor (not shown). An electric motor 17, an electric hydraulic pump 18, and an oil tank 19 are mounted on a machine frame 21 on the traveling device 20. The electric motor 17 is driven by electric power from a generator 23 of the generator unit 4 described later. As will be described later, the traveling device 20 can be operated by pressure oil from the electric hydraulic pump 18 or the engine pump 22 of the generator unit 4, but the electric motor 17 is activated by an external power source, and the electric hydraulic pump 18 It can be operated by pressurizing the oil in the oil tank 19 by operation and supplying the pressurized oil to the traveling device 9. The width of the electric hydraulic unit 3 is about 750 mm, which is the same as that of the work machine body 1.

  The generator unit 4, which is another unit constituting the emergency escape device 2, includes an engine pump 22, a generator 23, an electric motor (electric motor) 24 driven by electric power from the generator 23, and the electric motor 24. And an oil tank 26, and a crawler type traveling device 27 that is operated by pressure oil supplied from the electric hydraulic pump 25 via a hydraulic circuit (not shown). The engine pump 22, the generator 23, the electric motor 24, the hydraulic pump 25, and the oil tank 26 are mounted on a machine frame 28 on the traveling device 27. Although not shown, the engine pump 22 is a small and compact unit integrally including a pump, a gasoline engine for driving the pump, a fuel (gasoline) tank, and the like. Even if the hydraulic pump 25 fails, the minimum pressure oil necessary for the emergency escape of the hydraulic work machine 1 can be supplied from the oil tank 26 to the work machine main body 1 side. The width of the generator unit 4 is also about 750 mm as with the work machine body 1. The traveling device 927 operates the generator 23 with an external power source, rotates the electric motor 24 with the electric power from the generator 23 to drive the hydraulic pump 25, and operates with the pressure oil pressurized by the pump 25. It is like that.

  The hydraulic circuit such as the traveling device 9 and the auger drive device 13 in the work machine body 1 and the hydraulic circuit of the electric hydraulic unit 3 can be connected via a hydraulic hose 29, and hydraulic pressure can be supplied from the electric hydraulic unit 3 side. The hydraulic fluid of the electric hydraulic unit 3 and the hydraulic circuit of the generator unit 4 can be connected via a hydraulic hose 30 and can be electrically driven from the generator unit 4 side. Pressure oil can be supplied to the hydraulic system unit 3 side. Further, the hydraulic circuit of the hydraulic working machine 1 and the hydraulic circuit of the generator unit 4 can be connected via a hydraulic hose 31 so that pressure oil can be supplied from the generator unit 4 side to the hydraulic working machine 1 side. Yes. Further, by connecting the electric motor 17 of the electric hydraulic unit 3 and the generator 23 of the generator unit 4 with the cap tire 32, the electric motor 17 can be driven by the electric power from the generator 23. The hydraulic hoses 29, 30, and 31 are inserted at their ends into connection ports provided in each hydraulic circuit.

  In FIG. 1, reference numeral 5 denotes an engine pump that can be connected to the generator unit 4 from the outside. This engine pump 5 is provided when the generator 23, the motor 24, or the electric hydraulic pump 25 mounted in the generator unit 4 fails, or when the built-in small engine pump 22 fails. Is connected to the generator unit 4 side via the hydraulic hose 33 to pressurize the oil in the oil tank 26, and the pressurized oil is supplied to the traveling device 27 of the generator unit 4 and the traveling device 20 of the electric hydraulic unit 3. And it can supply to the traveling apparatus 9 of the working machine main body 1, and those emergency escapes can be aimed at.

  Next, the use of the hydraulic working machine (pile driver) configured as described above will be described. In use, the hydraulic circuit of the working machine body 1 and the hydraulic pressure of the electric hydraulic unit 3 are used as shown in FIG. The circuit is connected by a hydraulic hose 29, the hydraulic circuit of the electric hydraulic unit 3 and the hydraulic circuit of the generator unit 4 are connected by a hydraulic hose 30, and if necessary, between the electric hydraulic unit 3 and the generator unit 4. The cap tire 31 is connected.

  Therefore, when the work machine body 1 is carried into the pile driving work site, the traveling device 9 of the work machine body 1 is operated by the pressure oil supplied from the electric hydraulic unit 3 side, and the work machine body 1 is moved. While moving to the work site, the electric hydraulic unit 3 and the generator unit 4 are moved following the work machine main body 1 by operating the traveling devices 20 and the traveling devices 27, respectively. At this time, since the work machine body 1, the electric hydraulic unit 3 and the generator unit 4 are each as narrow as about 750 mm, they can be carried even in a narrow work site such as under a railway overhead line or at a station platform. it can.

  For example, during the work of pile driving on a railway track, the electric motor (electric motor) 17 of the electric hydraulic unit 3 breaks down and the electric hydraulic pump 18 does not operate. When the device 9 and the traveling device 9 of the electric hydraulic unit 3 cannot be operated, and the work machine body 1, the electric hydraulic unit 3 and the generator unit 4 cannot be retreated from the railroad track. When there is an external power source near the site, the generator 23 of the generator unit 4 is connected to the external power source, the generator 23 is operated, the electric motor 24 is driven and the hydraulic pump 25 is operated, The oil in the oil tank 26 is pressurized, and the pressure oil is supplied to the traveling device 20 of the electric hydraulic unit 3 via the hydraulic hose 30 and the working machine via the hydraulic hose 31. By supplying to the traveling device 9 of the body 1, all the traveling devices 9, 20, 27 including the generator unit 4 can be operated, so that the work machine body 1, the electric hydraulic unit 3 and the generator unit 4 are connected to the railway. Emergency escape from the orbit is possible. In this case, as an external power source for driving the generator 24, a power source for lighting and a compacting machine is always installed at a railway track maintenance work site that is usually performed at night, so that the power source can be used.

  Further, when the generator 23 of the generator unit 4 is broken or there is no external power source near the work site, the oil in the oil tank 26 is pressurized by operating the engine pump 22 of the generator unit 4. The pressure oil is supplied to the traveling device 27, supplied to the traveling device 20 of the electric hydraulic unit 3 via the hydraulic hose 30, and supplied to the traveling device 9 of the work machine body 1 via the hydraulic hose 31. By doing so, the emergency escape of the work machine body 1, the electric hydraulic unit 3 and the generator unit 4 can be achieved.

  Further, when the engine pump 22 mounted on the generator unit 4 is out of order, the external engine pump 5 is connected to the generator unit 4 side via the hydraulic hose 33 so that the oil in the oil tank 26 is discharged. The pressurized oil is supplied to the traveling device 27 and supplied to the traveling device 20 of the electric hydraulic unit 3 via the hydraulic hose 30 and the traveling device 9 of the work implement body 1 via the hydraulic hose 31. Can be supplied to.

  FIG. 2 shows another hydraulic working machine according to the present invention. In FIG. 2, reference numeral 1 denotes a working machine body composed of the same pile driving machine as shown in FIG. Since it is exactly the same as that of FIG. 1, the same components are denoted by the same reference numerals and description thereof is omitted. In FIG. 1, 6 is a self-propelled emergency escape device. In addition, the width | variety of each of the working machine main body 1 and the emergency escape apparatus 6 is about 750 mm similarly to the hydraulic working machine shown in FIG.

  The emergency escape device 6 includes a main engine pump 34, an engine pump 35 smaller than the main engine pump 34, an oil tank 36, and a crawler that is operated by pressure oil supplied from the main engine pump 34 or the small engine pump 35. The main body engine pump 34, the small engine pump 35 and the oil tank 36 are mounted on a machine frame 38 on the traveling device 37. When an abnormality such as an engine failure occurs, the work machine By connecting the hydraulic circuit of the main body 1 and the hydraulic circuit of the emergency escape device 6 with a hydraulic hose 39, pressure oil can be supplied between the work machine main body 1 side and the emergency escape device 6 side. . Further, the emergency escape device 6 is connected to an external engine pump 5 different from the built-in main body engine pump 34 and small engine pump 35 by a hydraulic hose 33 as in the case of the generator unit 4 shown in FIG. It can be done.

  The use of the hydraulic working machine shown in FIG. 2 will be described. In use, the hydraulic circuit of the working machine body 1 and the hydraulic circuit of the emergency escape device 6 are connected by a hydraulic hose 39. Thus, when the work machine main body 1 is carried into the pile driving work site, the traveling device 9 of the work machine main body 1 is operated by the pressure oil supplied from the emergency escape device 6 side, and the work machine main body 1 is While moving to the work site, the emergency escape device 6 is moved following the work implement body 1 by operating the traveling device 37. At this time, since the work machine body 1 and the emergency escape device 6 have a narrow width of about 750 mm, they can be carried even in a narrow work site such as under a railway overhead line or at a station platform.

  If the main body engine pump 34 of the emergency escape device 6 breaks down during the operation as described above, a small engine pump 35 different from the main body engine pump 34 is used, and the engine pump 35 removes the oil from the oil tank 36. The pressure oil is supplied to the work machine main body 1 side via the hydraulic hose 39 and supplied to the traveling device 37 of the emergency escape device 6, thereby the work machine main body 1 and the emergency escape device 6. Can be moved from the work site to a safe place to make an emergency escape.

  When both the main body engine pump 34 and the small engine pump 35 mounted on the emergency escape device 6 are out of order, the external engine pump 5 is connected to the emergency escape device 6 side via the hydraulic hose 33. Thus, the oil from the oil tank 36 is pressurized and the travel device 37 of the emergency escape device 6 is operated, and is supplied to the hydraulic working machine 1 side via the hydraulic hose 39 to operate the travel device 9. Emergency escape can be planned.

  The above-described hydraulic work machine in FIG. 1 can normally be driven by three workers because the work machine main body 1 and the electric hydraulic unit 3 and the generator unit 4 of the emergency escape device 2 can each run independently. In addition, the hydraulic work machine of FIG. 2 requires two workers because the work machine main body 1 and the emergency escape device 6 can each be self-propelled. By controlling each of the hydraulic work machines with the following traveling control device, the hydraulic work machine shown in FIGS. 1 and 2 can be operated only by the work machine main body 1 by one worker. The following traveling control apparatus will be described below.

  FIG. 3 shows a flowchart of follow-up running control applied to the hydraulic working machine of FIG. This follow-up traveling control device keeps the distance between the preceding work machine body 1 and the electric hydraulic unit 3 of the emergency escape device 2 and the distance between the electric hydraulic unit 3 and the generator unit 4 constant. However, when the work machine body 1 changes direction, the traveling of the units 3 and 4 is controlled so as to change the direction of the units 3 and 4 accordingly.

  1 will be described in accordance with the flowchart shown in FIG. 3, an operator who operates the work machine main body 1 selects the automatic follow-up travel mode, and the work machine main body 1 travels by a crawler operation of the travel device 9. When the operation is started, a control signal is transmitted from the work implement body 1 to the electric hydraulic unit 3 of the emergency escape device 2, and the traveling device 20 of the electric hydraulic unit 3 follows the work implement main body 1 based on the control signal. Then, a control signal is transmitted from the electric hydraulic unit 3 to the generator unit 4, and the traveling device 27 of the generator unit 4 follows the electric hydraulic unit 3 based on this control signal.

  That is, when the work machine body 1 changes direction, the electric hydraulic unit 3 of the emergency escape device 2 follows the work machine body 1 while maintaining a constant distance from the work machine body 1 (work machine body 1 Change the direction while calculating the position that changed direction). In this case, the control device grasps the machines (worker main body 1 and unit 3) where the optical follow-up cameras (not shown) attached to the front ends of the electric hydraulic unit 3 and the generator unit 4 respectively run ahead, Catch the distance and direction to control the driving. When the preceding work machine main body 1 stops the travel operation, the follow-up travel control is terminated. When the work machine main body 1 resumes the travel operation, the control shown in the flowchart of FIG. 3 is performed again, and this is repeated.

  Further, in this case, as safety devices, infrared human sensitive sensors (detecting temperatures of 15 ° to 40 °) (not shown) are installed at the rear part of the work machine body 1, the front and rear of the unit 3, and the front part of the unit 4, respectively. If a human enters during that time, the vehicle will decelerate rapidly, and touch sensors (not shown) are provided at the front and rear of the unit 3 and at the front of the unit 4, and the units 3 and 4 are attached to these touch sensors. It is possible to set so that the traveling of the units 3 and 4 is stopped suddenly when it is lightly hit.

  Each unit 3, 4 is provided with an inclination sensor (not shown) to prevent the vehicle from falling during traveling. As the management device, touch panel 40, 41, 42 (see FIGS. 1 and 2) is provided on work machine body 1 and each unit 3, 4, and control functions of each unit 3, 4 are provided on these touch panels 40, 41, 42. And the left and right turn action schedule is displayed. In FIG. 2, a touch panel provided on the emergency escape device 6 is indicated by 43.

  When the emergency escape device 2 is running automatically, when the electric hydraulic unit 3 is too close to the work machine body 1 and the generator unit 4 is too close to the electric hydraulic unit 3, the hydraulic hose is loosened. To avoid such a situation, the working machine is not shown in the figure to avoid such a situation because the hydraulic hose may be damaged due to scratches caused by rubbing the ground or the like. Tension winches can be interposed between the main body 1 and the electric hydraulic unit 3 and between the electric hydraulic unit 3 and the generator unit 4.

  FIG. 4 shows a flowchart of follow-up running control applied to the hydraulic working machine of FIG. The follow-up traveling control device changes the direction of the emergency escape device 6 according to the change in the direction of the work implement body 1 while maintaining the distance between the preceding work implement main body 1 and the emergency escape device 6 constant. Thus, the travel of the emergency escape device 6 is controlled. As shown in the flowchart of FIG. 4, the follow-up running control device selects the automatic follow-up running mode, and when the work implement main body 1 starts a run operation by a crawler operation of the travel device 9, the emergency escape from the work implement main body 1 A control signal is transmitted to the device 6, and the emergency escape device 6 follows the work implement body 1 based on the control signal. Also in this case, the two operations of the work implement body 1 and the emergency escape device 6 can be performed only by the operation of the work implement body 1 by one worker.

  In the hydraulic working machine shown in FIG. 2 as well, the tension winch as described above can be interposed between the working machine body 1 and the emergency escape device 2.

DESCRIPTION OF SYMBOLS 1 Hydraulic work machine 2 Emergency escape device 3 Electric hydraulic unit 4 Generator unit 5 External engine pump 6 Emergency escape device 9 Hydraulic work machine traveling device 14 Hydraulic work machine hydraulic pump 15 Hydraulic work machine engine 17 Electric Electric unit hydraulic motor 18 Electric hydraulic unit hydraulic pump 19 Electric hydraulic unit oil tank 20 Electric hydraulic unit traveling device 22 Generator unit built-in small engine 23 Generator unit generator 24 Generator unit electric motor 25 Generator unit Hydraulic pump 26 Generator unit oil tank 27 Generator unit travel device 29 Hydraulic hose 30 Hydraulic hose 31 Hydraulic hose 34 Emergency escape device main body engine pump 35 Emergency escape device small engine pump 36 Emergency escape device Oil tank 37 emergency escape device travel device

Claims (6)

A hydraulic working machine comprising a working machine body provided with a traveling device operated by pressure oil, and an emergency escape device comprising a self-propelled electric hydraulic unit and a generator unit,
The electric hydraulic unit includes an electric motor, an electric hydraulic pump driven by the electric motor, an oil tank, and a traveling device that operates by pressure oil. The generator unit includes a generator and a generator from the generator. It consists of an electric motor driven by electric power, an electric hydraulic pump driven by this electric motor, an engine pump, an oil tank, and a traveling device operated by pressure oil. Hydraulic work machine that can supply pressure oil via hydraulic hose between the motor and electric hydraulic unit and generator unit.   The hydraulic working machine according to claim 1, wherein an engine pump different from the engine pump can be connected to the generator unit by a hydraulic hose from the outside. A hydraulic working machine comprising a working machine body equipped with a traveling device operated by pressure oil, and an emergency escape device capable of self-running,
The emergency escape device consists of a main body engine pump, an engine pump smaller than the main body engine pump, an oil tank, and a traveling device that operates by pressure oil. Hydraulic working machine that can supply pressure oil via a hydraulic hose.   The hydraulic working machine according to claim 3, wherein an external engine pump different from the built-in main body engine pump and small engine pump can be connected to the emergency escape device via a hydraulic hose.   While maintaining the distance between the preceding working machine body and the electric hydraulic unit of the emergency escape device, and the distance between the electric hydraulic unit and the generator unit, respectively, when the working machine body changes direction, The hydraulic working machine according to claim 1 or 2, further comprising a follow-up travel control device that controls the travel of each unit so as to change the direction of each unit accordingly.   Tracking to control the travel of the emergency escape device to change the direction of the emergency escape device according to the change of the direction of the emergency escape device while maintaining a constant distance between the preceding work implement body and the emergency escape device The hydraulic working machine according to claim 3 or 4, further comprising a traveling control device.

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