JP6233875B2 - Portable high-pressure hose emergency cut-off tool and high-pressure hose replacement method using the same - Google Patents

Description

  The present invention relates to a technique for blocking a flow path inside a high-pressure hose to prevent outflow of fluid from a damaged site.

2. Description of the Related Art Conventionally, there is a high-pressure hose that uses a fluid such as oil, air, water or the like with a high pressure of the order of several tens of KPa to several tens of MPa using a pump or the like and circulates the fluid inside. Applications of the high-pressure hose include various operations such as driving various working devices and cleaning by jetting high-pressure water. High pressure hoses are generally flexible due to materials such as rubber and resin due to their freedom of placement and convenience of work, and are used as hydraulic hoses and air hoses for devices such as hydraulic cylinders and air brakes. It has been.
Such a high-pressure hose may be damaged from the outer surface to the inner wall surface due to wear or contact. In that case, after stopping the pump connected to the high-pressure hose, remove the high-pressure hose from the joint or valve attached to both ends of the high-pressure hose and plug the joint or valve. It is often done.

  Here, multiple tie tampers and ballast regulators used for maintenance work such as inspection and replacement of rails and sleepers on railroad tracks on which passenger cars and freight cars run, ballast tamping work, etc. There are maintenance vehicles. Since this maintenance work needs to be carried out by placing a maintenance vehicle that can move on the railroad track, a predetermined time (the closing time) for carrying out the maintenance work in a time zone such as at night when a passenger car or a freight car does not travel. ) Is set. After this closing time, passenger cars and freight cars begin to operate. Therefore, since maintenance work cannot be performed, the maintenance work is required to be quick. So, for example, if the hydraulic hose of the maintenance vehicle is damaged during maintenance work, stop the maintenance vehicle on the track, replace the hydraulic hose as described above, and plug the joints, valves, etc. Is a big problem because it takes time.

  Moreover, there are a plurality of relatively long hydraulic hoses having a length of 4 and 5 m, and there are cases where 10 to 20 joints are arranged in close contact with each other. In this case, long trunk portions of a plurality of hydraulic hoses are often stacked, and it takes time to pick up damaged hydraulic hoses and sort the joints of the hydraulic hoses from other high-pressure hoses. Therefore, instead of removing the high-pressure hose from the joint or the like and plugging it as described above, it is possible to quickly prevent the oil outflow on the railroad and quickly evacuate the maintenance vehicle from the railroad. Was demanded.

Conventionally, there is no technique for directly blocking the high-pressure hose with respect to such a problem. For example, a method of wrapping an adhesive tape around a damaged portion to prevent the fluid from flowing out can be considered. However, unlike a normal water hose or the like, the high-pressure hose has a relatively large internal fluid pressure of several tens of KPa to several tens of MPa, so that when the pump is operated, the adhesive tape is immediately peeled off.
In addition, when searching for a technique applicable to a high-pressure hose, there is a technique described in Patent Document 1. This is done by making a cut of a predetermined size in the damaged part of the hose and expanding the damaged part, and then inserting the base material into the hose from this damaged part and hitting this internal base material and the outside of the hose. This is a technique of tightening the contacted base material with bolts and nuts to block the damaged part.

JP 2011-033183 A

However, in order to increase the pressure resistance of the high pressure hose, the inner layer and the outer layer are often formed firmly, and in addition, a reinforcing layer made of steel wire or the like is formed between these two layers. There is also. Therefore, like the technique of patent document 1, when performing the operation | work which cuts into a damaged site | part from an outer surface to an inner wall surface, such work will take time rather than a normal water supply hose etc. Furthermore, since it is also necessary to make the base materials face each other inside and outside the high-pressure hose and to connect and tighten them, it takes more time. Therefore, the technique of Patent Document 1 is not actually effective in that the flow path inside the high-pressure hose is quickly blocked.
This invention is made | formed in view of the above, Comprising: It provides the tool with sufficient workability | operativity which can interrupt | block the flow path inside the damaged high pressure hose rapidly.

In order to solve the above problems, a portable high-pressure hose emergency shut-off tool according to an aspect of the present invention is provided in a vehicle used for track maintenance work, and has a steel reinforcing layer in the layer, and the vehicle This is a portable high-pressure hose emergency shut-off tool that inserts a high-pressure hose in which high-pressure oil circulates in the internal flow path by driving the pump accompanying the operation of the engine and temporarily shuts off the flow path at the maintenance site. The first holding member having a first contact surface that contacts the high-pressure hose at one end and the first contact surface disposed opposite to the first contact surface A second clamping member having a second abutting surface that abuts on the high-pressure hose, a thread groove is formed on the outer peripheral surface, and the first clamping member has an end on the opposite side to the first abutting surface. A shaft member coupled so that the clamping member can be screw-fed, and a thread groove and a screw of the shaft member A threaded groove having a nut portion formed on an inner peripheral surface, and a C-shaped frame to which the second clamping member is coupled, and the first abutting surface and the second abutting surface Each of which is formed with a ridge line made up of continuous convex curved ridges facing each other, and the first clamping member and the second clamping member have a cross-sectional shape from both sides sandwiching the shaft of the shaft member, respectively. Each of the first clamping members includes a pair of planes that are continuously provided on the ridge so as to include a triangular region that extends linearly symmetrically toward the ridge and has the ridge as a vertex. Is formed with a through-hole parallel to the shaft of the shaft member at a position closer to the frame than the portion with which the high-pressure hose abuts, and one end of the second clamping member has the ridgeline of the second clamping member Fixed on the first ridge line of the second clamping member A guide rod extending toward the ridge line of the holding member and having the other end inserted into the through hole is provided, and the end of the first holding member on the frame side is on the first holding member side of the frame A guide portion having a shape formed to be engageable with the end portion of the first clamping member is formed by the guide rod and the guide portion so that the ridge line of the first clamping member faces the ridge line of the second clamping member. The first pinching member is configured to be displaceable to the second pinching member side by rotating the shaft member while maintaining the above posture, and the vehicle engine is started and the high pressure hose is brought into the shut-off position of the high pressure hose. In this state, the high-pressure oil was prevented from flowing out.

  According to this configuration, when the shaft member is rotated, the first clamping member is displaced toward the second clamping member by the screw feeding operation. The high pressure hose is sandwiched from the left and right by the first contact surface and the second contact surface. At this time, the axial force derived from the rotational torque of the shaft member is applied to the high-pressure hose as a pressing force. The high pressure hose sandwiched between the first clamping member and the second clamping member is strongly crushed by the contact surface on which the convex ridgeline is formed, and the flow path inside the high pressure hose is blocked. . In addition, since a frictional force is generated between the screw groove of the shaft member and the screw groove of the nut portion, the first holding member is not easily displaced in the direction away from the second holding member.

Further, a ridge line composed of continuous curved ridges may be formed on the contact surfaces of the two holding members, and the two ridge lines may be directly opposed. With this configuration, the high-pressure hose is crushed with the ridge lines facing each other, so that the flow path inside the high-pressure hose can be efficiently blocked.
Further, a through hole parallel to the axis of the shaft member may be formed in the first clamping member, and a guide rod inserted through the through hole may be further provided. With this configuration, since the straightness when the first clamping member is displaced toward the second clamping member is improved, the operability when the high-pressure hose is shut off can be further improved. In particular, when convexly shaped ridge lines are formed on the contact surfaces of the two clamping members, when the first clamping member is displaced while maintaining the posture in which the two ridge lines are directly opposed, Since the member is prevented from rotating around the axis of the shaft member, the high-pressure hose can be crushed more efficiently.

  Moreover, you may form the guide part formed so that the shape of the edge part by the side of the said 1st clamping member on the said 1st clamping member side of the said frame could be engaged. With this configuration, since the straightness when the first clamping member is displaced toward the second clamping member is improved, the operability when the high-pressure hose is shut off can be further improved. In particular, when convexly shaped ridge lines are formed on the contact surfaces of the two clamping members, when the first clamping member is displaced while maintaining the posture in which the two ridge lines are directly opposed, Since the member is prevented from rotating around the axis of the shaft member, the high-pressure hose can be crushed more efficiently.

A certain aspect of the method for replacing a high-pressure hose according to the present invention is provided in a movable vehicle used for track maintenance work, and has a steel reinforcing layer in the layer, which is accompanied by operation of the engine of the vehicle. When a high-pressure hose in which high-pressure oil circulates in an internal flow path is damaged by driving a pump, the high-pressure hose is replaced, and in the stop step of stopping the engine, the engine is stopped, Using the portable high-pressure hose emergency shut-off tool according to the aspect, the damaged high-pressure hose is maintained in a posture in which the ridge line of the first clamping member is directly opposed to the ridge line of the second clamping member, An emergency blocking step of rotating the shaft member to displace the first clamping member toward the second clamping member and sandwiching the first clamping member between the first clamping member and the second clamping member to block the internal flow path. And the car A restart step for starting the engine and driving the pump; and a high-pressure shut-off step for preventing outflow of the high-pressure oil when the high pressure is applied again to the shut-off position of the high-pressure hose by the driving. The portable high pressure hose emergency shut-off tool is sandwiched in the high-pressure hose and the vehicle is moved away from the place where the emergency shut-off step is performed while the internal flow path is shut off; And replacing the damaged high-pressure hose after the moving step.

  With this configuration, even if there is no time to replace the high-pressure hose at the place where the high-pressure hose is damaged, the internal flow path is interrupted immediately, and the vehicle is moved to another place in that state. Therefore, even if there is no time to replace the high-pressure hose at the place where the high-pressure hose is damaged, excessive outflow of fluid from the inside of the high-pressure hose can be prevented.

Therefore, according to an aspect of the present invention, the flow path inside the high-pressure hose is blocked only by rotating the shaft member, so that it does not take time to remove the high-pressure hose from the joint or to make a cut. . Therefore, the damaged flow path inside the high-pressure hose can be quickly shut off.
In addition, once the first clamping member is screwed and the high pressure hose is crushed, the position of the first clamping member is not easily displaced. Even if added, the blocking state of the flow path can be firmly maintained.

It is a front view explaining the portable high-pressure hose emergency shut-off tool concerning this embodiment. It is a top view explaining the portable high-pressure hose emergency cutoff tool concerning this embodiment. It is a figure explaining the state which the 1st clamping member displaced. It is a figure explaining the state which the 1st clamping member displaced. It is a schematic perspective view explaining the usage method of the portable high-pressure hose emergency cutoff tool which concerns on this embodiment. It is a schematic perspective view explaining the portable high-pressure hose emergency cutoff tool which concerns on other embodiment of this invention.

  The portable high-pressure hose emergency cut-off tool according to the embodiment of the present invention is used to cut off an internal flow path with a hydraulic hose used in a track maintenance vehicle interposed therebetween. The pressure applied to the oil that is the fluid flowing through the flow path is 15 to 35 MPa. The configuration will be described below with reference to the drawings. In addition, the shape, size, or ratio of each member or device constituting the portable high-pressure hose emergency shut-off tool shown in the drawing is appropriately simplified and exaggerated.

(Constitution)
As shown in FIG. 1, the portable high-pressure hose emergency cutoff tool 1 according to the embodiment of the present invention includes a first clamping member 2 and a second clamping member 3 that sandwich a high-pressure hose 9 from both sides on a coaxial line. The portable high-pressure hose emergency cutoff tool 1 has a guide bar 10 fixed to the second holding member 3. The portable high-pressure hose emergency shut-off tool 1 has a cylindrical bearing 4 fixed to the first clamping member 2, a shaft member 5 connected to the cylindrical bearing 4, and a nut portion 6 screwed with the shaft member 5. . The portable high-pressure hose emergency cutoff tool 1 has a frame 7 that supports the nut portion 6 and the second clamping member 3. The portable high-pressure hose emergency cutoff tool 1 has a handle portion 8 that rotates the shaft member 5. These members are all made of stainless steel.

  The first sandwiching member 2 has a prismatic shape as a whole, and the longitudinal direction of the side surface thereof is arranged orthogonal to the axial direction of the shaft member. Moreover, as shown in FIG. 2, the cross section is made into the substantially pentagon shape diameter-reduced to the high-pressure hose 9 side, and the termination | terminus is the 1st contact surface 2a in which the smooth convex-shaped edge was formed. As shown in FIG. 1, the first abutting surface 2 a is formed by continuously forming the convex ridge from the upper end to the lower end of the first clamping member 2, and the end of the first clamping member 2 on the high pressure hose 9 side. The ridgeline of the part is formed. The 1st clamping member 2 contact | abuts on the outer surface 9a of the high pressure hose 9 after being comprised in this way.

  The first clamping member 2 has a through hole 2b formed parallel to the axis of the shaft member 5, and a guide member 10 is inserted into the through hole 2b. The guide rod 10 is fixed to the second holding member 3 so that one end thereof protrudes horizontally toward the nut portion 6, and guides the axial displacement of the first holding member 2. With this configuration, as will be described later, when the first clamping member 2 is displaced toward the second clamping member 3 while maintaining the posture in which the above-described two ridge lines face each other, the first clamping member is Prevents pivoting about the axis.

  A guide portion 2 c is formed at the lower end of the first clamping member 2 on the frame 7 side so as to be engageable with the frame 7. The guide portion 2c is engaged with the frame 7 so as to sandwich the end portion of the frame 7 on the first clamping member 2 side from above. With this configuration, as will be described later, when the first clamping member 2 is displaced toward the second clamping member 3 while maintaining the posture in which the above-described two ridge lines face each other, the first clamping member is Prevents pivoting about the axis.

  Similar to the first clamping member 2, the second clamping member 3 has a prismatic shape as a whole, and the longitudinal direction of the side surface thereof is arranged orthogonal to the axial direction of the shaft member. Moreover, as shown in FIG. 2, the cross section is made into the substantially pentagon shape which diameter-reduces to the high-pressure hose 9 side, The termination | terminus is the 2nd contact surface 3a in which the smooth convex-shaped ridge was formed. As shown in FIG. 1, the second abutting surface 3 a is formed such that the convex ridge is continuously formed from the upper end to the lower end of the second clamping member 3, and the end of the second clamping member 3 on the high pressure hose 9 side. The ridgeline of the part is formed. The 2nd clamping member 3 contact | abuts on the outer surface 9a of the high pressure hose 9 after being comprised in this way.

  As shown in FIG. 1, the second contact surface 3a is disposed opposite to the first contact surface 2a, and the high-pressure hose 9 is disposed between the first contact surface 2a and the second contact surface 3a. . Moreover, the ridgeline of the 1st clamping 1st member 2 and the ridgeline of the 2nd clamping member 3 are arrange | positioned so as to oppose. Therefore, as will be described later, when the first clamping first member 2 is displaced toward the second clamping member 3, the first clamping member 2 and the second clamping member 3 each correct the ridge lines configured as described above. Since the high-pressure hose 9 is crushed against the first contact surface 2a and the second contact surface 3a, neither the high-pressure hose 9 is sheared. Then, a large pressing force can be applied to the high pressure hose 9 to block the flow path inside the high pressure hose 9.

The cylindrical bearing 4 is fixed to the opposite end portion of the first abutting surface 2a of the first clamping member 2, and the rotational movement of the shaft member 5 as shown by the bidirectional rotation arrow in the figure is performed in both directions in the figure. The first pinching member 2 is converted into a straight movement as indicated by a directional arrow.
A thread groove 5 a is formed on the outer peripheral surface of the shaft member 5. A thread groove 6 a that engages with the thread groove 5 a is formed on the inner peripheral surface of the nut portion 6. Thereby, the 1st clamping member 2 is couple | bonded by the shaft member 5 so that screw feeding is possible. Further, the end 5c of the shaft member 5 opposite to the cylindrical bearing 4 has a hexagonal cross section. Further, an insertion hole 5b is formed in the end portion 5c, and a substantially cylindrical handle portion 8 is inserted into the insertion hole 5b. The shaft member 5 can be rotated by rotating the handle portion 8.

Both ends of the handle portion 8 are formed with a slightly larger diameter than the central portion, and are larger than the diameter of the insertion hole 5b. As a result, the handle portion 8 can be displaced in a direction perpendicular to the axis of the shaft member 5, so that the length of the portion exposed from the insertion hole 5 b is set to the front side (lower side in FIG. 1) and the rear side ( It can be freely adjusted with the upper side in FIG.
The frame 7 is formed in a substantially C shape, and the second holding member 3 is fixed to one end 7b, and the nut portion 6 is fixed to the other end 7c. As a result, the first clamping member 2 is configured to be displaceable between the second clamping member 3 and the nut portion 6 as indicated by a two-way linear arrow in the figure as the shaft member 5 rotates. ing. Further, the shaft member 5 rotates in a forward and reverse direction as indicated by a bi-directional rotation arrow in the figure, and the displacement of the first clamping member 2 is also moved to the second clamping member 3 side by the rotation direction. It is also switched to the side.

In the high-pressure hose 9, a reinforcing layer 9c made of steel wire is disposed between the inner layer 9d and the outer layer 9b.
In the portable high-pressure hose emergency shut-off tool 1 according to the present embodiment, when the shaft member 5 is rotated using the handle portion 8 with the above-described configuration, the first clamping member 2 is moved to the second clamping member 3 side by a screw feeding operation. Displace to The first abutment surface 2a and the second abutment surface 3a abut against the outer surface 9a of the high pressure hose 9, and the high pressure hose 9 includes the first clamping member 2 and the second clamping member 3 as shown in FIGS. Between the left and right. When the shaft member 5 is further rotated, the axial force derived from the rotational torque of the shaft member 5 is applied to the high pressure hose 9 as a pressing force. As shown in FIGS. 3 and 4, the high-pressure hose 9 sandwiched between the first sandwiching member 2 and the second sandwiching member 3 on the same coaxial line as the first sandwiching member 2 and the first sandwiching member 3 is formed with a convex ridgeline. The contact surface 2a and the second contact surface 3a are strongly crushed and the flow path inside the high-pressure hose 9 is blocked. At this time, since a frictional force is generated between the screw groove 5a of the shaft member 5 and the screw groove 6a of the nut portion 6, the first holding member 2 can be easily displaced in a direction away from the second holding member 3. Absent.

(How to replace the high pressure hose)
Next, a method for replacing the high-pressure hose performed using two portable high-pressure hose emergency shut-off tools 1 according to the present embodiment will be described. Here, the high pressure hose 9 is a hydraulic hose that drives a stabilizer that is a working device of a ballast regulator that is a maintenance vehicle. The stabilizer is a working device that performs the initial settlement of the ballast. This hydraulic hose is attached to a pump (not shown) that applies pressure to oil as a working fluid, and this pump operates in conjunction with the driving of the ballast regulator engine. Moreover, although the damage which generate | occur | produced in the high pressure hose 9 is a laceration which penetrates from the outer surface 9a of the high pressure hose 9 to the inner wall surface 9e, the high pressure hose 9 shall not be cut | disconnected.

First, when an operator who performs maintenance work detects damage to the high-pressure hose 9 based on a display of a hydraulic oil tank level sensor (not shown) disposed in the high-pressure hose 9, the maintenance work is temporarily stopped. And the engine of a ballast regulator is stopped on a track | line, and the operation | movement of the pump which supplies pressure oil inside the said high pressure hose 9 is stopped. Pressure oil to which a pressure of about 17 MPa is applied is supplied from the pump.
Next, the operator prepares one portable high-pressure hose emergency cut-off tool 1 according to the present embodiment, and, as shown in FIG. 1, between the first clamping member 2 and the second clamping member 3, the high-pressure hose. Arrange an arbitrary position on the pump side from the 9 damage site. At this time, the high pressure hose 9 is arranged so that the center position is on the axis of the shaft member 5.

  Next, the shaft member 5 is rotated using the handle portion 8 to displace the first clamping member 2 to the second clamping member 3 side. After the first contact surface 2a of the first clamping member 2 contacts the outer surface 9a of the high-pressure hose 9, the first clamping member 2 is further fed. Then, the high-pressure hose 9 is crushed between the first contact surface 2a on which the convex ridgeline is formed and the second contact surface 3a on which the convex ridgeline is similarly formed. As a result, as shown in FIG. 4, the inner wall surface 9e of the high-pressure hose 9 is brought into close contact, and the flow path inside the high-pressure hose 9 is blocked (emergency blocking step).

When the inner wall surface 9e of the high pressure hose 9 is in close contact, the reaction force transmitted from the high pressure hose 9 increases. When the operator feels an increase in the reaction force, the rotation of the handle portion 8 is stopped.
Next, the operator uses another portable high-pressure hose emergency shut-off tool 1 between the first clamping member 2 and the second clamping member 3 from the damaged portion of the high-pressure hose 9 as described above. Arrange any position on the side. Hereinafter, at this position, the operation of blocking the flow path inside the high-pressure hose 9 by the portable high-pressure hose emergency cutoff tool 1 is the same as described above. As a result, the high-pressure hose 9 is blocked at two locations on the pump side and the hydraulic oil tank side across the damaged portion, and oil outflow stops from the damaged portion.

  Next, the ballast regulator engine is restarted while the two portable high-pressure hose emergency shut-off tools 1 are sandwiched between the high-pressure hoses 9. As the engine starts, the pump connected to the high-pressure hose 9 starts operating. When the pump is operated, a predetermined pressure is applied to the high-pressure side shut-off position of the high-pressure hose 9 sandwiched by the portable high-pressure hose emergency shut-off tool 1. Since the high-pressure hose 9 is firmly shut off by the portable high-pressure hose emergency shut-off tool 1, the pressure oil cannot move before the shut-off position and does not flow out from the damaged position. The pressure oil is bypassed to another path from a relief valve (not shown) connected to the high-pressure hose 9 and is returned to the pump.

  Next, the worker moves the ballast regulator from the track to a base line that is a shelter for the maintenance vehicle (moving step). At this time, the high-pressure hose 9 of the ballast regulator and the portable high-pressure hose emergency shut-off tool 1 are coupled in the above-described shut-off state. This is because once the first clamping member 2 is screwed and the high-pressure hose 9 is crushed, the frictional force between the screw grooves does not easily displace the position of the first clamping member 2. Therefore, even if pressure is applied to the oil inside the high-pressure hose 9 in a state where the internal flow path is blocked, the blocked state of the flow path can be firmly maintained. Thereby, a ballast regulator can be moved from the track | line which performed the emergency cutoff step, with the portable high-pressure hose emergency cutoff tool 1 sandwiched in the high-pressure hose 9.

And if the ballast regulator is retracted to the base line, it becomes possible for other maintenance vehicles to pass through and work on the track where the ballast regulator has stopped, thus increasing the delay in maintenance work. do not do.
Further, in the ballast regulator retracted on the base line, the damaged high-pressure hose 9 is removed from the joints at both ends thereof and replaced with new high-pressure hoses (exchange step). As described above, the high-pressure hose replacement method according to the present embodiment is configured.

  According to the method for replacing a high-pressure hose according to the present embodiment, even if there is no time to replace the high-pressure hose 9 on the line where the high-pressure hose 9 is damaged, the internal flow path is interrupted immediately, Move the maintenance vehicle to the base line. Therefore, in the maintenance work of the track that requires quick work, even if there is no time to replace the high-pressure hose 9 on the track where the high-pressure hose 9 is damaged, excessive oil leakage from the inside of the high-pressure hose 9 is prevented. be able to.

In order to verify the shut-off capability of the portable high-pressure hose emergency shut-off tool 1 according to this embodiment, a pressure resistance test was performed.
In the test, two types of steel wire reinforced rubber hoses for hydraulic use (Plasser & Toyler, rated pressure 21 MPa, length 2 m) with inner diameters of 9.5 mm and 12 mm were prepared.
After connecting one end of these two types of high-pressure hoses with an inner diameter to the pump via a relief valve and cutting the high-pressure hose at its intermediate position, at a position 150 mm from the cutting position on the pump side, as shown in FIG. It cut off using the portable high-pressure hose emergency cut-off tool 1 according to the present embodiment. For easy viewing, the blocking position in the figure is shown at a position closer to the cutting position than the actual position. Thereafter, oils with the following respective pressures were introduced from the pump, pressure was applied to the blocked locations to establish a shut-off state, and oil outflow from the damaged site was observed for 30 minutes thereafter.
(1) Test 1: 17.5 MPa
(2) Test 2: 21.0 MPa
(3) Test 3: 32.0 MPa
With respect to the high-pressure hose 9 having two types of inner diameters, no oil leakage was confirmed for 30 minutes in any of the cases (1) to (3). Thereby, the interruption | blocking capability of the portable high-pressure hose emergency interruption | blocking tool 1 which concerns on this embodiment has been demonstrated.

(effect)
The portable high-pressure hose emergency cutoff tool 1 according to the present embodiment includes a first contact surface 2a on which a convex ridge line is formed, and a second contact surface 3a on which a convex ridge line is formed. The high-pressure hose 9 is sandwiched between them. And if the 1st clamping 1st member 2 displaces to the 2nd clamping member 3 side, the 1st clamping member 2 and the 2nd clamping member 3 will mutually oppose each ridgeline, and will crush the high pressure hose 9. FIG. Therefore, even the relatively robust high-pressure hose 9 can block the internal flow path.
Moreover, since the portable high-pressure hose emergency cutoff tool 1 according to the present embodiment only needs to rotate the handle portion 8 to rotate the shaft member 5, it can have a simple structure and is portable. In addition, since no special electrical / electronic parts are required, the probability of failure is low even under rainy wind.

  In the portable high-pressure hose emergency shut-off tool 1 according to the present embodiment, the handle portion 8 is inserted so as to be displaceable in a direction orthogonal to the axis of the shaft member 5, so the length of the portion exposed from the insertion hole 5 b Can be freely adjusted between the front side (lower side in FIG. 1) and the rear side (upper side in FIG. 1). Therefore, when the shaft member 5 is rotated, if the length of the portion exposed from the insertion hole 5b is displaced so that the front side becomes longer every half rotation, the shaft member 5 is smoothly rotated. The workability of the hose emergency cutoff tool 1 is further improved.

(Other)
In addition, the shape of the 1st clamping member 2 and the 2nd clamping member 3 is not restricted to the shape as described in this embodiment, You may change suitably. For example, as shown in FIG. 6, the first clamping member 2 is composed of a planar first abutting surface 2a and four rectangular parallelepiped fixing portions 2d, and the first abutting surface 2a and the second clamping member It is good also as a structure which pinches | interposes the high voltage | pressure hose 9 between the 2nd contact surfaces 3a of the member 3. FIG.

Moreover, the raw material of the portable high-pressure hose emergency cutoff tool 1 according to the present embodiment is not limited to stainless steel, and may be made of other metals such as iron or reinforced resin. The nut portion and the second clamping member may be formed separately from the frame 7 and then fixed to the frame 7 or may be formed integrally with the frame 7 from the beginning.
The high pressure hose may be made of rubber or resin. The high-pressure hose is not limited to a structure in which a reinforcing layer is provided between the outer layer and the inner layer, and any other fluid can be used as long as a fluid to which a relatively large pressure of several tens of KPa or more flows. It may be a structure.

Further, the high-pressure hose to which the present invention is applied is not limited to the high-pressure hose used in the track maintenance vehicle, and heavy equipment for civil engineering construction work or water is jetted at high pressure to wash the object to be cleaned. It can be used for a hose in which a fluid to which a relatively large pressure of several tens of KPa or more is circulated, such as a high pressure washer.
Further, the high-pressure hose 9 may or may not be in a cut state as long as damage occurs and the internal flow path needs to be blocked. The damaged state may be a laceration or a pinhole.

DESCRIPTION OF SYMBOLS 1 Portable high-pressure hose emergency cutoff tool 2 1st clamping member 2a 1st contact surface 2b Through-hole 2c Guide part 3 2nd clamping member 3a 2nd contact surface 4 Rotating bearing 5 Shaft member 5a Thread groove (shaft member)
5b Insertion hole 6 Nut part 6a Thread groove (nut part)
7 Frame 8 Handle 9 High-pressure hose 10 Guide rod

Claims (3)

A high pressure hose is provided in a vehicle used for track maintenance work, has a steel reinforcing layer in the layer, and high pressure oil flows through an internal flow path by driving a pump accompanying the operation of the engine of the vehicle. , A portable high-pressure hose emergency shut-off tool that sandwiches from outside and shuts off the flow path at the maintenance site,
A first clamping member having a first contact surface that contacts the high-pressure hose at one end;
A second holding member provided with a second contact surface that is disposed opposite to the first contact surface and that is disposed between the first contact surface and the high pressure hose;
A shaft member formed with a thread groove on the outer peripheral surface, and coupled to the end of the first holding member opposite to the first contact surface so that the first holding member can be screwed;
A screw groove to be screwed with the screw groove of the shaft member has a nut portion formed on the inner peripheral surface, and a C-shaped frame to which the second clamping member is coupled,
On the first abutment surface and the second abutment surface, ridge lines each consisting of continuous convex ridges are formed facing each other,
Each of the first clamping member and the second clamping member has a triangular cross-sectional shape extending linearly symmetrically from both sides sandwiching the shaft of the shaft member toward the ridge, and having the ridge as a vertex. Each including a set of planes provided continuously to the ridge so as to include a region of shape,
In the first clamping member, a through-hole parallel to the axis of the shaft member is formed at a position closer to the frame than a portion where the high-pressure hose contacts.
One end of the second clamping member is fixed on the ridge line of the second clamping member, extends from the ridge line of the second clamping member toward the ridge line of the first clamping member, and the other end of the second clamping member. A guide rod inserted through the hole is provided,
A guide portion having a shape formed so as to be engageable with an end portion on the first clamping member side of the frame is formed on the end portion on the frame side of the first clamping member,
The shaft member is rotated to hold the first clamping member while maintaining a posture in which the ridge line of the first clamping member is directly opposed to the ridge line of the second clamping member by the guide rod and the guide portion. It is configured to be displaceable to the second clamping member side,
A portable high-pressure hose emergency shut-off tool that prevents the high-pressure oil from flowing out in a state where the engine of the vehicle is started and the high pressure is applied to the high-pressure hose shut-off position. It said second clamping member is coupled to the frame only at one end face of the C-shaped frame so as to have a gap between the inner surface of the opening portion of the C-shaped frame,
A coupling portion between the shaft member located on the other end side of the C-shaped frame and the first clamping member and a coupling portion between the frame of the second clamping member are aligned on the same straight line. The portable high-pressure hose emergency shut-off tool according to claim 1, wherein It is provided in a movable vehicle used for track maintenance work, has a steel reinforcing layer in the layer, and high-pressure oil circulates in the internal flow path by driving the pump accompanying the operation of the engine of the vehicle. A method of replacing a high pressure hose when the high pressure hose is damaged,
A stopping step of stopping the engine;
The portable high-pressure hose emergency cut-off tool according to claim 1 or 2, wherein the engine is stopped, the damaged high-pressure hose is connected to the ridge line of the first clamping member, and the second clamping member is While maintaining the posture of facing the ridgeline, the shaft member is rotated to displace the first clamping member toward the second clamping member, and between the first clamping member and the second clamping member An emergency shut-off step that sandwiches and shuts off the internal flow path;
A restarting step of starting the engine of the vehicle and driving the pump;
A high-pressure shut-off step for preventing outflow of the high-pressure oil in a state where the high pressure is applied again to the shut-off position of the high-pressure hose by the driving;
The portable high-pressure hose emergency shut-off tool is sandwiched in the high-pressure hose, and the moving step of moving the vehicle away from the place where the emergency shut-off step has been performed while the internal flow path is shut off, and
A replacement step of replacing the damaged high pressure hose after the moving step;
A method of replacing a high-pressure hose characterized by comprising:

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