JP4804549B2 - Emergency escape device and method for hydraulic work machine - Google Patents

Description

  TECHNICAL FIELD The present invention relates to an emergency escape device and method for a hydraulic work machine, and more specifically, causes a hydraulic work machine that has become unable to self-run due to an abnormality in an engine or a hydraulic pump to escape from a work place to a safe place. The present invention relates to an emergency escape device for a hydraulic working machine and a method for emergency escape of a hydraulic work machine using the emergency escape device.

  A hydraulic working machine equipped with a traveling device and a working device that is operated by pressure oil supplied via a hydraulic circuit from a hydraulic pump driven by an engine for laying and maintenance work of railway tracks, maintenance work of peripheral facilities, etc. Is used. 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 promptly evacuate from the railway track after the work is completed.

  In addition, when working on railway tracks such as under overhead lines, overpasses, and tunnels, abnormalities occur in the hydraulic work machine engine or hydraulic pump for some reason, and pressure oil can be supplied to traveling equipment. In the event that the hydraulic work machine cannot be withdrawn from the railway track, the emergency work device for operating the hydraulic work machine from the outside and causing the hydraulic work machine to escape from the railway track is put on standby. It is done.

  As the emergency escape device, a hydraulic power source unit composed of a prime mover, a hydraulic pump and a hydraulic oil tank, a hydraulic motor driven by pressure oil generated by the hydraulic power source unit, and driven by this hydraulic motor, an abnormality occurred. An escape device having a motor unit comprising a hydraulic pump connectable to a hydraulic circuit of a hydraulic working machine has been proposed, and a hydraulic pump of another hydraulic working machine is used as the hydraulic power source unit Has also been proposed (see, for example, Patent Document 1).

JP-A-11-148148

  However, although Patent Document 1 proposes to use another hydraulic working machine as the hydraulic power source unit, another hydraulic working machine is used as the hydraulic power source unit, and the hydraulic pressure of the motor unit is obtained by pressure oil from here. Since the pump is driven and the pressure oil generated by the hydraulic pump of this motor unit is supplied to the hydraulic circuit of the hydraulic working machine where the abnormality has occurred, another hydraulic working machine and motor unit that become the hydraulic power source unit Between the motor unit and the hydraulic work machine where the abnormality occurred, it is necessary to take out the hydraulic hoses that have been separately stored in the wound state and connect them to each other. Pull out the heavy and thick hydraulic hoses for a long time. Therefore, there is a problem that it takes a lot of work and takes a long time because it has to be carried and connected manually.

  Therefore, the present invention provides an emergency escape device for a hydraulic work machine and an emergency escape device that can easily perform a work of causing a malfunctioning hydraulic work machine to escape from a work place such as a railway track to a safe place. The purpose is to provide an emergency escape method for used hydraulic working machines.

In order to achieve the above object, an emergency escape device for a hydraulic working machine according to the present invention includes, as a first configuration, a traveling device that is operated by pressure oil supplied from a hydraulic pump driven by an engine via a hydraulic circuit. In an emergency escape device for causing the hydraulic work machine to escape from a work place when an abnormality occurs in the engine or the hydraulic pump in the provided hydraulic work machine, the emergency escape device includes the hydraulic work machine Separately, a traveling device that operates by pressure oil supplied from a hydraulic pump driven by an engine via a hydraulic circuit, and a pressure oil supply device for supplying pressure oil to the hydraulic work machine, piezoelectric oil supply device includes a hydraulic hose which connects the hydraulic circuit of the hydraulic circuit of the emergency escape device said hydraulic working machine, and a hose reel for winding the hydraulic hose, the hydraulic hose Is connected to the hydraulic circuit of the emergency escape device and the hydraulic circuit of the hydraulic working machine by being pulled out from the hose reel and connected to the hydraulic circuit of the hydraulic working machine when the abnormality occurs It is characterized in that.

According to a second configuration of the emergency escape device for a hydraulic work machine of the present invention, the hydraulic work machine includes a traveling device that is operated by pressure oil supplied from a hydraulic pump driven by an engine via a hydraulic circuit. In an emergency escape device for allowing the hydraulic work machine to escape from the work place when an abnormality occurs in the engine or the hydraulic pump, the emergency escape device is driven by the engine separately from the hydraulic work machine. A travel device that is operated by pressure oil supplied from a hydraulic pump via a hydraulic circuit, and a front device mounting portion that mounts a front device that is operated by the pressure oil, and the front device mounting portion includes the hydraulic device. A pressure oil supply device for supplying pressure oil to the work implement is mounted, and the pressure oil supply device includes a hydraulic circuit for the emergency escape device and a hydraulic circuit for the hydraulic work device. Comprising a hydraulic hose which connects, and a hose reel for winding the hydraulic hose, the hydraulic hose, the when the abnormality occurs, is pulled out from the hose reel, connected to a hydraulic circuit of the hydraulic working machine Thus, the hydraulic circuit of the emergency escape device is connected to the hydraulic circuit of the hydraulic working machine .

According to a third configuration of the emergency escape device for a hydraulic working machine of the present invention, the hydraulic working machine includes a traveling device that is operated by pressure oil supplied from a hydraulic pump driven by an engine via a hydraulic circuit. In an emergency escape device for allowing the hydraulic work machine to escape from the work place when an abnormality occurs in the engine or the hydraulic pump, the emergency escape device is driven by the engine separately from the hydraulic work machine. A traveling device that is operated by pressure oil supplied from a hydraulic pump via a hydraulic circuit, an upper revolving unit that is turnable on the traveling device, and a front part of the upper revolving unit that is operated by the pressure oil. A front device mounting portion for mounting the front device, and a pressure oil supply device for supplying pressure oil to the hydraulic work machine is mounted on the front device mounting portion. Is, piezoelectric oil supply device includes a hydraulic hose which connects the hydraulic circuit of the hydraulic circuit of the emergency escape device said hydraulic working machine, and a hose reel for winding the hydraulic hose, the hydraulic hose, when said abnormality occurs, drawn from the hose reel, by connecting to the hydraulic circuit of the hydraulic working machine, to connect the hydraulic circuit of the hydraulic working machine with a hydraulic circuit of the emergency escape device It is characterized.

  Further, in the second configuration and the third configuration, the front device mounting portion is formed such that the pressure oil supply device and a hydraulic work machine operated by the pressure oil can be attached and detached, and the hydraulic work When the machine is mounted, the hydraulic circuit of the emergency escape device operates in a state where the hydraulic supply circuit connected to the pressure oil supply device is inactive and the hydraulic supply circuit connected to the hydraulic work machine is activated. It can be switched to a state.

According to a fourth configuration of the emergency escape device for a hydraulic working machine of the present invention, the hydraulic working machine includes a traveling device that is operated by pressure oil supplied from a hydraulic pump driven by an engine via a hydraulic circuit. In an emergency escape device for allowing the hydraulic work machine to escape from the work place when an abnormality occurs in the engine or the hydraulic pump, a traveling device, and an upper swing body provided on the traveling device so as to be capable of turning. A front device mounting portion provided at a front portion of the upper swing body, a hydraulic work machine mounted on the front device mounting portion, and the traveling device, the upper swing body and the hydraulic work machine driven by an engine. A hydraulic working device provided with a hydraulic circuit that is operated by pressure oil supplied from a hydraulic pump, wherein the Freon is obtained by removing the hydraulic working machine from the hydraulic working device The device mounting portion, provided with a hose reel for winding hydraulic hoses and said hydraulic hoses for supplying hydraulic fluid to the hydraulic circuit of the hydraulic working machine, the hydraulic hose, when said abnormality occurs, the hose A hydraulic oil supply device that connects the hydraulic circuit of the emergency escape device and the hydraulic circuit of the hydraulic work machine is mounted by being pulled out from the reel and connected to the hydraulic circuit of the hydraulic work machine, and the hydraulic pressure The hydraulic circuit connected to the hydraulic work machine is detached from the hydraulic work machine and connected to the hydraulic hose.

  Further, in each of the above configurations, a hydraulic motor that rotates the hose reel is provided, and a circuit that supplies pressure oil to the hydraulic motor that rotates the hose reel winds and rotates the rotation of the hose reel. And a rotation state switching means for switching between a state and a free rotation state, and a torque switching means for switching the rotation torque of the hose reel.

  Furthermore, the first configuration of the emergency escape method for the hydraulic working machine according to the present invention using the emergency escape device of each configuration described above is that the emergency escape device equipped with the pressure oil supply device is replaced with the travel device of the emergency escape device. The first step of operating the hydraulic work machine near the hydraulic work machine, the second process of feeding the hydraulic hose from the hose reel and connecting it to the hydraulic circuit of the hydraulic work machine, and the hydraulic pressure from the pressure oil supply device A third step of separating the emergency escape device from the hydraulic work machine by operating the traveling device of the emergency escape device in a state in which the supply of pressure oil to the hydraulic work machine is stopped, and feeding the hydraulic hose from the hose reel; With the emergency escape device stopped running, pressure oil is supplied from the pressure oil supply device to the hydraulic circuit of the hydraulic working machine via the hydraulic hose, and the traveling device of the hydraulic working machine is operated. The hydraulic work machine is made to approach the emergency escape device, and the fourth step of winding the hydraulic hose around the hose reel, the third step and the fourth step are performed at least once, and the hydraulic work machine is operated as the hydraulic work machine. It is characterized by being allowed to run to the escape location.

  According to a second configuration of the emergency escape method for a hydraulic working machine of the present invention, the emergency escape device equipped with the pressure oil supply device in the emergency escape device of each of the above configurations is operated, and the traveling device of the emergency escape device is operated. And a second step of feeding the hydraulic hose from the hose reel and connecting it to the hydraulic circuit of the hydraulic working machine, and a hydraulic hose from the hydraulic oil supply device. Pressure oil is supplied to the hydraulic circuit of the hydraulic work machine via the hydraulic operation machine, and the travel device of the hydraulic work machine is operated, and the travel device of the emergency escape device is operated to travel the emergency escape device and the hydraulic work machine. The third step is performed, and the hydraulic working machine is caused to travel to the escape location of the hydraulic working machine to escape.

  The emergency escape device for a hydraulic working machine according to the present invention includes a pressure oil supply device and a traveling device in a state in which a hydraulic hose is wound around a hose reel. You can drive up close. Therefore, it is not necessary to take out and prepare a hydraulic hose that has been separately stored in the wound state, and furthermore, the length of the hydraulic hose handled when connecting both hydraulic circuits with the hydraulic hose can be shortened. Connection work can be performed easily.

  In addition, after the hydraulic hose is connected, the emergency work device and the emergency escape device are run simultaneously or alternately so that the emergency escape device and the hydraulic work machine in which an abnormality has occurred are quickly You can evacuate to the place. Furthermore, by alternately running the two, it is possible to minimize the hydraulic pressure supply capacity in the emergency escape device, eliminating the need for other equipment such as the motor unit described above, simplifying the structure, and reducing the size of the device. Can be achieved. In addition, when the two are driven alternately, it is necessary to pull out or wind up the hydraulic hose from the hose reel, but it is easy to wind up the hydraulic hose by providing a hydraulic motor on the hose reel. Can be done.

  Furthermore, the emergency escape device of the hydraulic work machine according to the present invention is operated by a hydraulic work machine, for example, hydraulically, by removing the pressure oil supply device, except when it is necessary to stand by for the escape of the hydraulic work machine. The pile driving machine is attached to the front device mounting part, and the hydraulic circuit connected to the pressure oil supply device is replaced with a hydraulic motor or cylinder for operating the pile driving machine. It can be used for pile driving work similar to a hammer. Conversely, a hydraulic working machine of a hydraulic working device, for example, a pile driving machine of a pile driving machine, is formed so that it can be exchanged with a pressure oil supply device, so that it can be used as a pile driving machine in normal times. However, it can be used as an emergency escape device simply by replacing the pile driving machine with a pressure oil supply device when necessary. Thereby, except when using as an emergency escape apparatus, since it can be used as a pile driver, the utilization efficiency of an emergency escape apparatus can be improved.

It is explanatory drawing which shows one usage example of the emergency escape apparatus of this invention. It is a side view which shows the emergency escape apparatus of the state which mounts | wears with a pressure oil supply apparatus. It is also a plan view. It is a side view which shows the emergency escape apparatus of the state equipped with the pile driving | operation machine. It is a circuit diagram which shows the outline of the hydraulic circuit of the emergency escape device when a pile driving machine is mounted. It is explanatory drawing which shows the flow of the pressure oil at the time of only an emergency escape device drive | working in the state which connected the hydraulic circuit of the hydraulic working machine which abnormality generate | occur | produced, and the hydraulic circuit of the emergency escape device via the hydraulic hose. It is explanatory drawing which shows the flow of the pressure oil at the time of only the pile driver in which abnormality similarly generate | occur | produced. It is explanatory drawing which shows the flow of the pressure oil at the time of performing an auger excavation with the pile driving machine which abnormality similarly generate | occur | produced. It is explanatory drawing which shows the flow of the pressure oil at the time of performing the raising / lowering operation of the auger of a pile driver or the turning operation | movement of an upper turning body where abnormality occurred similarly. It is explanatory drawing which shows an example of the hydraulic circuit which enabled simultaneous driving | running | working of the hydraulic type working machine and the emergency escape apparatus in which abnormality occurred. It is explanatory drawing which shows the other example of the hydraulic circuit which enabled simultaneous driving | running | working of the hydraulic working machine and the emergency escape apparatus which a malfunction generate | occur | produced.

  The emergency escape device 11 shown in the present embodiment is provided with a traveling device 12 provided with a crawler, an upper revolving body 13 that is turnable on the traveling device 12, and a front portion of the upper revolving body 13. The apparatus main body 15 provided with the front apparatus attaching part 14 is comprised by the pressure oil supply apparatus 16 and the pile driving | operation machine 17 with which the said front apparatus attaching part 14 is detachably attached. An engine, a hydraulic pump, a hydraulic circuit, a fuel tank, and the like are provided inside the upper swing body 13, and a driver's cab 18 is provided on one upper side. A front jack 13a and a rear jack 13b are provided at the four front and rear, right and left corners of the upper swing body 13, and a pressure oil supply device mounting portion for mounting a pressure oil supply device 16 is mounted on the front device mounting portion 14. 14a and a pile driving machine mounting portion 14b for mounting the pile driving machine 17 are provided.

  The pressure oil supply device 16 includes four hose reels 22 arranged in parallel on a gantry 21, and is connected to the rear end portion of the gantry 21 with the pressure oil supply device mounting portion 14 a. A connecting portion 23 is provided. Each hose reel 22 is arranged with its rotation axis directed in the width direction of the upper swing body 13, and a hydraulic circuit connecting portion 24 having a swivel joint is provided at the end of the rotation shaft. Hydraulic motors 25 for rotation are connected to each other via a chain. Each hose reel 22 is wound with a hydraulic hose 26 whose base end communicates with the hydraulic circuit connecting portion 24. At the tip of each hydraulic hose 26, there is provided a coupler 27 for connecting to the hydraulic circuit of the hydraulic working machine in which an abnormality has occurred, and the coupler 27 is held at the front end of the gantry 21 during standby. .

  The pile driving machine 17 has a proximal end attached to a leader 32 supported by a leader attaching portion provided at the front end of the bracket 31 so as to be able to undulate and tiltable, and a undulating cylinder attaching portion provided at the rear end of the bracket 31, A hoisting cylinder 33 having a tip attached to the rear side of the reader 32, a working device that moves up and down along the reader 32, for example, an auger driving device 34, a lifting means 35 for lifting the auger driving device 34, and a lifting device A winch (see FIG. 5) 36 is provided, and a hydraulic circuit for operating each of the hoisting cylinder 33, the auger drive device 34, the elevating means 35 and the winch 36 is connected.

  The hydraulic circuit 41 provided in the apparatus main body 15 is configured to switch and supply a plurality of hydraulic pumps 42, an engine 43 that drives the hydraulic pumps 42, and pressure oil supplied from the hydraulic pumps 42 to a predetermined circuit. And a plurality of control valves 44. The apparatus main body 15 includes a pair of left and right traveling hydraulic motors 12ML and 12MR for operating the traveling apparatus 12, and a turning hydraulic motor 13M for rotating the upper swing body 13. The hydraulic circuit 41 is connected.

  As shown in FIG. 5, the hydraulic circuit when the pile driving machine 17 is attached to the apparatus main body 15 includes each circuit from a plurality of control valves 44 provided in the hydraulic circuit 41, and the pile driving machine 17. The hoisting cylinder 33, the hydraulic motor 34M of the auger drive device 34, the hydraulic motor 35M of the elevating means 35, and the hydraulic motor 36M of the winch 36 are connected to each other, and each control valve 44 is operated. These devices are configured to operate. In order to avoid complication of the drawing, FIG. 5 shows only main circuits used when the pile driving machine 17 is mounted on the apparatus main body 15, and the return circuit from each device and the front jack 13a. The circuit for operating the rear jack 13b and the like and the circuit when the pressure oil supply device 16 is mounted are not shown.

  As shown in FIGS. 4 and 5, the pile driving machine 17 is mounted on the apparatus main body 15, and the hydraulic circuit 41 switched by a plurality of control valves 44 is connected to the cylinder and the hydraulic motor of the pile driving machine 17, respectively. Therefore, it can be used as a normal pile driving machine for pile driving work or ground improvement work.

  When the pressure oil supply device 16 is attached to the apparatus body 15, as shown in FIGS. 6 to 11, each circuit from the plurality of control valves 44 provided in the hydraulic circuit 41 is connected to each hose reel 22. Each hydraulic hose 26 is connected via a hydraulic circuit connecting portion 24. One control valve 44 is provided with a hose reel hydraulic circuit 61 for operating the hydraulic motor 25 for rotating each hose reel 22. The hose reel hydraulic circuit 61 includes a rotation state switching unit 62 for switching the rotation of the hose reel 22 between a winding rotation state and a free rotation state, and a torque switching unit 63 for switching the rotation torque of the hose reel 22. Is provided. 6 to 11 also show only main circuits used when the pressure oil supply device 16 is attached to the apparatus main body 15, and illustrations of return circuits and the like from the respective parts are omitted in the same manner as described above.

  The rotation state switching means 62 switches a supply side circuit for supplying pressure oil to the hydraulic motor 25 for driving the hose reel and a return side circuit for returning pressure oil from the hydraulic motor 25 between a non-communication state and a communication state. The supply circuit and the return circuit are brought into a non-communication state (FIGS. 7 to 11), so that the hydraulic circuit 61 for hose reel is supplied from the hydraulic pump 42 via one control valve 44. Pressure oil supplied to the side circuit is supplied to each hydraulic motor 25, and each hose reel rotates in the direction of winding the hydraulic hose by the hydraulic motor 25, and the hydraulic hose 26 is wound around the hose reel 22. The pressure oil discharged from each hydraulic motor 25 passes through the return side circuit and finally returns to the hydraulic oil tank in the hydraulic circuit 41.

  The rotation state switching means 62 causes the supply side circuit and the return side circuit of the hose reel hydraulic circuit 61 to communicate with each other as shown in FIG. 6 so that the hydraulic oil can freely flow between the supply side circuit and the return side circuit. Therefore, the hydraulic motors 25 can be freely rotated, and the hose reel 22 is freely rotated. This free rotation state of the hose reel 22 is used when the hydraulic hose 26 is pulled out from the hose reel 22, that is, when the hose reel 22 is rotated in the direction opposite to the winding direction of the hydraulic hose 26.

  Further, the torque switching means 63 is formed by combining a relief valve 63a and a switching valve 63b, and the set pressure of the relief valve 63a has a sufficiently low rotational torque as long as the hydraulic hose 26 can be wound. It is set to a pressure that can be applied to the reel 22 (hydraulic motor 25). The switching valve 63b has a low torque position for connecting the supply side circuit and the return side circuit of the hydraulic circuit 61 for the hose reel via the relief valve 63a, and a high torque position for blocking the supply side circuit and the return side circuit. If the switching valve 63b is set to the high torque position, the hydraulic oil supplied to the supply side circuit is supplied to each hydraulic motor 25, and the hydraulic motor 25 is at a pressure corresponding to the supply pressure from the hydraulic pump 42. And the hose reel 22 is rotated with high torque in the direction of winding the hydraulic hose 26.

  When the switching valve 63b is set to the low torque position, when the pressure oil supply pressure to the hydraulic motor 25 is equal to or lower than the set pressure of the relief valve 63a, the hose reel is rotated at a low torque at a pressure equal to or lower than the set pressure. When the pressure exceeds the set pressure of the relief valve 63a, the relief valve 63a is opened and the supply side circuit and the return side circuit are in communication with each other, so that hydraulic oil can freely flow between the supply side circuit and the return side circuit. Thus, the hose reel 22 is in a freely rotating state. In this way, by forming the hose reel 22 so as not to rotate in the winding direction beyond a preset torque, it is possible to prevent a large tensile load from acting on the hydraulic hose 26 when the hydraulic hose 26 is wound. The hose 26 can be protected.

  On the other hand, as shown in FIG. 1, a hydraulic work machine that performs work in a railway track, in this embodiment, a pile driver 72 for work in a railway track equipped with a short leader 71 is a normal pile driver. Similarly, a traveling device 73 provided with a crawler, an upper revolving body 74 provided on the traveling device 73 so as to be able to swivel, the reader 71 provided at a front portion of the upper revolving body 74, and the reader 71 A raising and lowering cylinder 75 for supporting the auger drive device 76, an auger drive device 76 that is a working device that moves up and down along the reader 71, a lifting means 77 for moving the auger drive device 76 up and down along the leader 71, and a lifting device A winch 78 and the like are provided, and a hydraulic circuit 81 for operating them is provided.

  The hydraulic circuit 81 of the pile driver 72 is a plurality as shown in FIGS. 6 to 11 (in FIGS. 7 to 11, only the hydraulic circuit 41 and the main part of the hydraulic circuit 81 are denoted by reference numerals). A hydraulic pump 82, an engine 83 for driving the hydraulic pump 82, a plurality of control valves 84 for switching and supplying pressure oil supplied from the hydraulic pump 82 to a predetermined circuit, and the plurality of control valves 84. And a circuit for operating the equipment to be switched. The circuit for operating the equipment is a turning hydraulic pressure for turning the pair of left and right hydraulic hydraulic motors 73ML and 73MR for operating the traveling device 73 and the upper swing body 74 from each control valve 84. The motor 74M, the hoisting cylinder 75, the hydraulic motor 76M of the auger drive device 76, the hydraulic motor 77M of the elevating means 77, and the hydraulic motor 78M of the winch 78 are connected. Furthermore, as a hydraulic working machine for working on a railroad track, an external circuit connection unit 85 for connecting an external hydraulic circuit, and hydraulic fluid derived from each device in the hydraulic circuit 81 is connected to an external circuit connection unit. A return circuit switching valve 86 for switching to the 85 side is provided. The external circuit connecting portion 85 is provided with a coupler receiver 85 a corresponding to the coupler 27 provided at the tip of the hydraulic hose 26. The coupler receiver 85a and the coupler 27 are closed by a check valve when not connected, and have a structure that automatically opens and communicates when both are connected.

  In the normal state, the pile driver 72 switches the return circuit switching valve 86 to the hydraulic oil tank 87 side in the hydraulic circuit 81 and uses the hydraulic circuit 81 of the own machine. In the state where the upper swing body 74 is swung to a predetermined angle, the angle of the leader 71 is adjusted by the hoisting cylinder 75 and the auger drive device 76 is moved up and down by the lifting means 77 and the auger drive device 76 is moved. Operate the pile driving work. At this time, the emergency escape device 11 stands by at a predetermined standby position with the pressure oil supply device 16 attached to the front device mounting portion 14.

  When an abnormality occurs in the engine 83 or the hydraulic pump 82 during the work and the pile driver 72 cannot move from the work place to a predetermined evacuation place by itself, the emergency escape device 11 cannot be used under the overhead line. The vehicle enters the railway track from the standby place and travels to the nearest pile driver 72 where the abnormality has occurred. Then, the rotation state switching means 62 is switched to the free rotation state of the hose reel 22, the hydraulic hose 26 is pulled out from each hose reel 22, and the hydraulic hose 26 is connected to the external circuit connection portion 85 of the pile driving machine 72. To do. At this time, the length of the hydraulic hose 26 pulled out from the hose reel 22 and connected to the emergency escape device 11 as close as possible to the pile driver 72, for example, close to 1 to several meters, is about several meters. It is possible to connect the heavy and thick hydraulic hose 26 easily in a short time. Further, after the hydraulic hose is connected, the return circuit switching valve 86 in the hydraulic circuit 81 of the pile driving machine 72 is switched to the external circuit connecting portion 85 side.

  If the performance of the hydraulic unit installed in the emergency escape device 11 is difficult or inefficient to simultaneously operate the traveling device 12 of the emergency escape device 11 and the traveling device 73 of the pile driving machine 72, connect the hydraulic hose. The escape operation of the pile driver 72 by the subsequent emergency escape device 11 is performed by alternately running the emergency escape device 11 and the pile driver 72 as shown in FIG.

  First, as shown in FIG. 1 (A), the emergency escape device 11 is caused to travel in the direction of the evacuation place (retreat direction) in a state after the hydraulic hose is connected. At this time, the rotation state switching means 62 in the hydraulic circuit 41 of the emergency escape device 11 is set to the position of the free rotation state of the hose reel, the torque switching means 63 is set to an arbitrary position, and the control valve 44 is set to the hydraulic circuit 81 of the pile driving machine 72. No pressure oil is supplied to the emergency escape device 11 and the traveling device 12 of the emergency escape device 11 is operated in the backward direction.

  As a result, the hydraulic fluid boosted by the hydraulic pump 42 of the hydraulic circuit 41 passes through the circuit L11 from the predetermined control valve 44 and is supplied to the left traveling hydraulic motor 12ML and the right traveling hydraulic motor 12MR, respectively. The emergency escape device 11 is moved away from the pile driver 72 by operating. At this time, since the rotation state switching means 62 is in the free rotation state of the hose reel 22, the hydraulic hose 26 is pulled out from the hose reel 22 as the emergency escape device 11 is separated from the pile driving machine 72. To go.

  As shown in FIG. 1B, the emergency escape device 11 is stopped when the emergency escape device 11 is separated from the pile driving machine 72 to a predetermined distance, for example, a distance corresponding to the length of the hydraulic hose 26, and the hydraulic circuit The hydraulic oil boosted by the hydraulic pump 42 is supplied to the hydraulic circuit 81 of the pile driving machine 72, and the pile driving machine 72 is moved backward to a position close to the emergency escape device 11.

  That is, as shown in FIG. 7, the hydraulic oil boosted by the hydraulic pump 42 of the hydraulic circuit 41 is supplied from the predetermined control valve 44 to the hydraulic circuit 81 of the pile driving machine 72 via the pressure oil supply device 16. The traveling device 73 of the hammer 72 is operated in the backward direction, and the hydraulic oil returning from the return circuit switching valve 86 via the external circuit connection portion 85 is supplied from the predetermined control valve 44 to the hydraulic oil tank 45 of the hydraulic circuit 41. To collect. Further, the rotational state switching means 62 is in a non-communication state, and the torque switching means 63 is in a low torque position.

  The hydraulic oil boosted by the hydraulic pump 42 passes through a plurality of supply-side circuits L12, a supply-side hydraulic hose 26 connected to the supply-side circuit L12, and an external circuit connection portion 85 from a predetermined control valve 44. It is supplied to the discharge side circuit L13 of the pump 82 in the hydraulic circuit 81. As a result, the pile driving machine 72 performs a traveling operation in the same backward direction as in the normal state, so that the left traveling hydraulic motor 73ML and the right traveling hydraulic motor are passed from the predetermined control valve 84 through the supply side circuit L14. Pressure oil is respectively supplied to 73MR, and the pile driving machine 72 travels in a direction in which the traveling device 73 operates in the backward direction and approaches the emergency escape device 11.

  The hydraulic oil discharged from the hydraulic motors 73ML and 73MR returns to a predetermined control valve 84 from a return side circuit (forward side circuit) (not shown), passes through a circuit L15, a return circuit switching valve 86, and a circuit L16, and further to an external circuit. The hydraulic hose 26 on the return side passes through the connection portion 85, passes through the circuit L17 of the hydraulic circuit 41, and is recovered from the predetermined control valve 44 to the hydraulic oil tank 45 of the hydraulic circuit 41.

  At the same time, each hydraulic motor 25 of the hose reel 22 is set in a state of rotating in the winding direction with a low torque by the torque switching means 63, so that the pile driving machine 72 approaches the emergency escape device 11. When the hydraulic hose 26 is wound around the hose reel 22 and the pile driving machine 72 is stopped, the hose reel 22 is idled to protect the hydraulic hose 26, the coupler 27, and the like.

  And as shown in FIG.1 (C), when the pile driver 72 approachs the emergency escape apparatus 11 to the predetermined distance, by stopping the pile driver 72, it is the same as the said FIG. 1 (A). Then, the traveling of the emergency escape device 11 and the traveling of the pile driving machine 72 are alternately repeated until the pile driving machine 72 reaches the evacuation place and is ready to escape. As a result, the pile driving machine 72 is retracted to the evacuation place to escape from the railroad track, and the emergency escape device 11 is retracted from the railroad track so that the railroad track can be in a state where the train can run. .

  Further, by connecting the hydraulic circuit 41 of the emergency escape device 11 in correspondence with the discharge side circuit of the pump 82 in the hydraulic circuit 81 of the pile driver 72, the pile driver 72 performs the same pile driving operation as usual. It is also possible to perform. For example, as shown in FIG. 8, when performing a pile driving work by the pile driving machine 72, the pile driving machine 72 from the hydraulic circuit 41 of the emergency escape device 11 through the pressure oil supply device 16 and the external circuit connection portion 85. The pressure oil supplied to the hydraulic circuit 81 may be supplied from a predetermined control valve 84 to the hydraulic motor 76M of the auger drive device 76 and the hydraulic motor 77M of the lifting / lowering means 77 via the circuit L18. Furthermore, as shown in FIG. 9, the upper turning body 74 of the pile driving machine 72 can be turned by supplying pressure oil to the turning hydraulic motor 74M via the circuit L19, and the pressure oil is supplied from the circuit L20. By doing so, the expansion and contraction of the hoisting cylinder 75, the operation of the winch 78 by supplying pressure oil from the circuit L21, and the operation of the front jack and the rear jack can be performed by selecting each circuit.

  Therefore, even if an abnormality occurs in the engine or the hydraulic pump in the pile driving machine 72 during the pile driving work, not only can the pile driving machine 72 be able to travel in the railway track, but also the emergency escape device 11 By connecting the hydraulic circuit 41, the pile driving machine 72 can perform the pile driving work as usual, so that the train can run without finishing the pile driving work in a halfway state. You can evacuate and escape after working.

  Further, as shown in FIG. 10, means for simultaneously supplying pressure oil in both directions to the upstream side of the travel switching section 44a and the pressure oil supply section 44b of the control valve 44 in the hydraulic circuit 41 of the emergency escape device 11, for example, diversion By providing the valve 46, it becomes possible to supply pressure oil to the both traveling hydraulic motors 12ML, 12MR of the emergency escape device 11 and the both traveling hydraulic motors 73ML, 73MR of the pile driving machine 72 simultaneously. In a state where the hydraulic hose 26 is connected, the emergency escape device 11 and the pile driver 72 can be run simultaneously to escape from the railroad track.

  In addition, as shown in FIG. 11, a travel switching unit 44 a and a pressure oil supply unit 44 b of the control valve 44 are connected in series, supplied from the travel switching unit 44 a to the traveling device 12, and returned from the traveling device 12. Even if the oil is formed so as to be supplied to the hydraulic circuit 81 of the pile driving machine 72 via the pressure oil supply unit 44b, the emergency escape device 11 and the pile driving machine 72 can be run simultaneously to escape.

  The emergency escape device 11 needs to wait at a predetermined position with the pressure oil supply device 16 mounted when the pile driving machine 72 performs the work in the railway track. During the period not to be performed, each circuit of the hydraulic circuit 41 is removed from the pressure oil supply device 16, the pressure oil supply device 16 is removed from the front device attachment portion 14, and the pile driving machine 17 is attached to the front device attachment portion 14. By connecting each circuit of the hydraulic circuit 41 to a predetermined position of the pile working machine 17, it can be used as a normal pile driver as shown in FIGS. 4 and 5. Therefore, it is not necessary to store in a standby state for a long period of time unlike an emergency escape device, and conversion from a pile driver to the emergency escape device 11 can be easily performed. The main body 15 can be used effectively, and the operating efficiency can be improved. Further, since the hydraulic hose 26 can be stored while being wound around the hose reel 22 provided in the pressure oil supply device 16, the hydraulic hose separately wound and stored on the reel as in the prior art can be used at the construction site. It is no longer necessary to transport it.

  In the embodiment, the pile driving machine that performs the pile driving work in the railway track is illustrated as the hydraulic working machine that uses the emergency escape device. However, the emergency escape device of the present invention is driven by the engine. It is possible to cope with various hydraulic working machines such as cranes and excavators equipped with traveling devices that are operated by pressure oil supplied from a hydraulic pump through a hydraulic circuit. In addition, the work place of the hydraulic work machine to be escaped is not particularly limited, and it is suitable for escape of a hydraulic work machine that works in a place where a crane can not be used such as under an overhead line, under a bridge, in a tunnel, It can be used in the same way for escape of a hydraulic working machine that performs work in various other places.

  Further, in the embodiment, as an emergency escape device, a traveling device, an upper swing body and a front device mounting portion are provided, and a pressure oil supply device or a pile driving machine can be attached to the front device mounting portion, An emergency escape device provided with an engine, a hydraulic pump, a hydraulic circuit, a fuel tank, a driver's cab, etc. was illustrated, but as an emergency escape device, a main body unit and a traveling device including an engine, a hydraulic pump, a hydraulic circuit, and a fuel tank, And a dedicated emergency escape device having a pressure oil supply device similar to that described above in the main body, and the traveling device is not limited to a crawler but may be a wheel. Further, the main body portion and the traveling device may be provided without the upper swing body, and the same front device mounting portion as the above may be provided on the main body portion.

  The hydraulic work machine to be mounted on the front device mounting part is not limited to the pile driving machine, and an excavator or the like can be mounted, and the hydraulic work machine to be mounted on the front device mounting part is removable. For example, two units can be formed by adding a hydraulic circuit that is required when the pressure oil supply device is mounted. One of the pile drivers can be used as a pile driver for performing a predetermined operation, and the other can be used as an emergency escape device.

  DESCRIPTION OF SYMBOLS 11 ... Emergency escape device, 12 ... Traveling device, 12ML ... Left traveling hydraulic motor, 12MR ... Right traveling hydraulic motor, 13 ... Upper turning body, 13a ... Front jack, 13b ... Rear jack, 13M ... Turning hydraulic motor, DESCRIPTION OF SYMBOLS 14 ... Front apparatus attaching part, 14a ... Pressure oil supply apparatus mounting part, 14b ... Pile driving | operation machine mounting part, 15 ... Apparatus main body, 16 ... Pressure oil supply apparatus, 17 ... Pile driving | operation machine, 18 ... Driver's cab, 21 DESCRIPTION OF SYMBOLS 22: Hose reel 23 ... Connection part 24 ... Hydraulic circuit connection part 25 ... Hydraulic motor 26 ... Hydraulic hose 27 ... Coupler 31 ... Bracket 32 ... Leader 33 ... Lifting cylinder 34 ... Auger Drive device, 34M ... hydraulic motor, 35 ... lifting means, 35M ... hydraulic motor, 36 ... winch, 36M ... hydraulic motor, 41 ... hydraulic circuit, 42 ... hydraulic pump, 43 ... d Gin, 44 ... control valve, 44a ... travel switching unit, 44b ... pressure oil supply unit, 45 ... hydraulic oil tank, 46 ... shunt valve, 61 ... hydraulic circuit for hose reel, 62 ... rotational state switching means, 63 ... torque switching Means, 63a ... relief valve, 63b ... switching valve, 71 ... leader, 72 ... pile driver, 73 ... traveling device, 73ML ... hydraulic motor for left traveling, 73MR ... hydraulic motor for right traveling, 74 ... upper turning body, 74M DESCRIPTION OF SYMBOLS: Hydraulic motor for turning, 75 ... Hoisting cylinder, 76 ... Auger drive device, 76M ... Hydraulic motor, 77 ... Elevating means, 77M ... Hydraulic motor, 78 ... Winch, 78M ... Hydraulic motor, 81 ... Hydraulic circuit, 82 ... Hydraulic pump , 83 ... Engine, 84 ... Control valve, 85 ... External circuit connection part, 85a ... Coupler receiver, 86 ... Return circuit switching valve, 87 ... Hydraulic oil tank

Claims (9)

When an abnormality occurs in the engine or the hydraulic pump in a hydraulic working machine having a traveling device that is operated by pressure oil supplied from a hydraulic pump driven by an engine via a hydraulic circuit, the hydraulic working machine In the emergency escape device for escaping from the work place, the emergency escape device is operated by pressure oil supplied from a hydraulic pump driven by an engine via a hydraulic circuit, separately from the hydraulic work machine. A pressure oil supply device for supplying pressure oil to the hydraulic work machine, the pressure oil supply device connecting a hydraulic circuit of the emergency escape device and a hydraulic circuit of the hydraulic work machine to comprise a hydraulic hose, and a hose reel for winding the hydraulic hose, the hydraulic hose, when said abnormality occurs, drawn from the hose reel, the hydraulic working machine By connecting to the hydraulic circuit, emergency escape device for a hydraulic working machine, characterized in that for connecting the hydraulic circuit of the hydraulic working machine with a hydraulic circuit of the emergency escape device. When an abnormality occurs in the engine or the hydraulic pump in a hydraulic working machine having a traveling device that is operated by pressure oil supplied from a hydraulic pump driven by an engine via a hydraulic circuit, the hydraulic working machine In the emergency escape device for escaping from the work place, the emergency escape device is operated by pressure oil supplied from a hydraulic pump driven by an engine via a hydraulic circuit, separately from the hydraulic work machine. And a front device mounting portion for mounting the front device operated by the pressure oil, and a pressure oil supply device for supplying pressure oil to the hydraulic work machine is mounted on the front device mounting portion. The pressure oil supply device includes a hydraulic hose that connects the hydraulic circuit of the emergency escape device and the hydraulic circuit of the hydraulic work machine, and a hoist that winds up the hydraulic hose. A Suriru, the hydraulic hose, when said abnormality occurs, drawn from the hose reel, by connecting to the hydraulic circuit of the hydraulic working machine, the hydraulic circuit of the emergency escape device hydraulic An emergency escape device for a hydraulic working machine, characterized in that the hydraulic circuit of the working machine is connected . When an abnormality occurs in the engine or the hydraulic pump in a hydraulic working machine having a traveling device that is operated by pressure oil supplied from a hydraulic pump driven by an engine via a hydraulic circuit, the hydraulic working machine In the emergency escape device for escaping from the work place, the emergency escape device is operated by pressure oil supplied from a hydraulic pump driven by an engine via a hydraulic circuit, separately from the hydraulic work machine. And a front device mounting portion for mounting a front device operated by the pressure oil on a front portion of the upper swing body, A pressure oil supply device for supplying pressure oil to the hydraulic work machine is attached to the device mounting portion, and the pressure oil supply device is connected to a hydraulic circuit of the emergency escape device. Comprising a hydraulic hose which connects the hydraulic circuit of the serial hydraulic working machine, and a hose reel for winding the hydraulic hose, the hydraulic hose, when said abnormality occurs, drawn from the hose reel, the An emergency escape device for a hydraulic work machine, wherein the hydraulic circuit of the emergency work device and the hydraulic circuit of the hydraulic work machine are connected by connecting to a hydraulic circuit of the hydraulic work machine. The front device mounting portion is formed to be detachable and replaceable with the pressure oil supply device and a hydraulic work machine operated by pressure oil, and the hydraulic circuit of the emergency escape device when the hydraulic work machine is mounted is: 4. The hydraulic pressure supply circuit connected to the hydraulic work machine is switched to an inoperative state, and the hydraulic pressure supply circuit connected to the hydraulic work machine is switched to an activated state. The emergency escape device for the hydraulic work machine described. When an abnormality occurs in the engine or the hydraulic pump in a hydraulic working machine having a traveling device that is operated by pressure oil supplied from a hydraulic pump driven by an engine via a hydraulic circuit, the hydraulic working machine In the emergency escape device for escaping from the work place, a traveling device, an upper revolving body provided on the traveling device so as to be able to swivel, a front device mounting portion provided at a front portion of the upper revolving body, A hydraulic work machine mounted on the front device mounting portion, and a hydraulic circuit that operates the traveling device, the upper swing body, and the hydraulic work machine with pressure oil supplied from a hydraulic pump driven by an engine. A hydraulic working device, wherein pressure oil is applied to a hydraulic circuit of the hydraulic working machine at the front device mounting portion from which the hydraulic working machine is removed from the hydraulic working device. With a hose reel for winding hydraulic hoses and said hydraulic hoses for feeding the hydraulic hose, when said abnormality occurs, drawn from the hose reel, is connected to the hydraulic circuit of the hydraulic working machine By mounting a hydraulic oil supply device that connects the hydraulic circuit of the emergency escape device and the hydraulic circuit of the hydraulic working machine, the hydraulic circuit connected to the hydraulic working machine is removed from the hydraulic working machine and An emergency escape device for a hydraulic working machine connected to a hydraulic hose. The emergency escape device for a hydraulic working machine according to any one of claims 1 to 5, further comprising a hydraulic motor that rotates the hose reel. The circuit for supplying pressure oil to the hydraulic motor for rotating the hose reel includes rotation state switching means for switching the rotation of the hose reel between a winding rotation state and a free rotation state, and the rotation torque of the hose reel. The emergency escape device for a hydraulic working machine according to claim 6, further comprising torque switching means for switching between the two. An emergency escape method for a hydraulic work machine using the emergency escape device according to any one of claims 1 to 7, wherein the emergency escape device equipped with the pressure oil supply device is used as a traveling device for the emergency escape device. The first step of operating the hydraulic work machine near the hydraulic work machine, the second process of feeding the hydraulic hose from the hose reel and connecting it to the hydraulic circuit of the hydraulic work machine, and the hydraulic pressure from the pressure oil supply device A third step of separating the emergency escape device from the hydraulic work machine by operating the traveling device of the emergency escape device in a state in which the supply of pressure oil to the hydraulic work machine is stopped, and feeding the hydraulic hose from the hose reel; With the emergency escape device stopped running, pressure oil is supplied from the pressure oil supply device to the hydraulic circuit of the hydraulic working machine via the hydraulic hose, and the hydraulic working machine is operated to operate the hydraulic device. The work machine is brought close to the emergency escape device, and the fourth step of winding the hydraulic hose around the hose reel, the third step and the fourth step are performed at least once, and the hydraulic work device is escaped from the hydraulic work device. An emergency escape method for a hydraulic working machine, wherein the escape is performed by traveling to a place. An emergency escape method for a hydraulic work machine using the emergency escape device according to any one of claims 1 to 7, wherein the emergency escape device equipped with the pressure oil supply device is used as a traveling device for the emergency escape device. The first step of operating the hydraulic work machine near the hydraulic work machine, the second process of feeding the hydraulic hose from the hose reel and connecting it to the hydraulic circuit of the hydraulic work machine, and the hydraulic pressure from the pressure oil supply device Pressure oil is supplied to the hydraulic circuit of the hydraulic working machine via the hose, and the traveling device of the hydraulic working machine is operated, and the emergency escape device and the hydraulic working machine are operated by operating the traveling device of the emergency escape device, The hydraulic work machine emergency escape method is characterized in that the hydraulic work machine is caused to travel to the escape location of the hydraulic work machine by performing the third step of running the machine.

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