JP4703975B2 - Guide device for hydraulic flexible tube - Google Patents

Abstract

The device has a carrier hose (26) intended to carry a milling frame and comprising same cylindrical shape and diameter as that of hydraulic hoses (22). The carrier hose has cylindrical cases integrated to a fixation block (28) and a suspension cable at its center. The cable is integrated to a sleeve that is screwed on the case. The fixation block connects the hoses (22) to fluid source, motor and hydraulic pump.

Description

In particular, the present invention relates to a guide device for winding a hydraulic flexible tube around a cylinder in supplying hydraulic oil to a hydraulic device of a drilling machine.

In order to form a hole in the ground in the form of a bulkhead, a drilling tool, most often called a milling machine, is known. The milling machine includes a frame suspended at the end of the winding means, and the frame includes, at its lower end, a plurality of teeth that are driven by a plurality of hydraulic motors and arranged in two cylinders having a plurality of horizontal axes. Has two wheels. The hydraulic motor is replenished with hydraulic oil introduced from the ground surface via a flexible tube, also called a hydraulic flexible tube. In order to replenish the hydraulic control device, it is necessary to arrange a large number of hydraulic flexible tubes over a length that can be several hundred meters. In order to perform the guidance of the flexible tube and the winding around the cylinder installed on the ground surface at the same time, a guide device for the flexible tube is used.

Such a guide device for a flexible tube is described in Patent Document 1. The guide device described in the publication includes a plurality of crossing members that are spaced apart in the longitudinal direction over the entire length of the guide device and that act to support a flexible tube extending in a direction perpendicular to the crossing member. . The cross member is supported by holding struts at each end. A plurality of end members having the same shape as the holding struts are provided at the edge of the guide device. The connection between the holding struts and the end members is provided by two traction cables through which these members pass. This joining is realized by considering the holding strut and the end member so as to have a shape adapted to guide on two opposing surfaces. When wrapped around a cylinder, the retaining struts are arranged to overlap directly and form a layer.
European Patent No. 518292 U.S. Pat. No. 3,248,487 German Patent No. 1082644 US Pat. No. 6,367,238

  This type of hydraulic flexible tube guide has two major disadvantages. First, in the manufacture of the holding strut and the edge member, it is necessary to accurately arrange a large number of members having a plurality of surfaces that need to be accurately processed to provide the above-described joining. Therefore, the manufacture of the device is complicated and relatively expensive. Further, when the guide device is wound around the cylinder, the winding diameter becomes very large due to the height of the holding struts overlapping each other. Since the end members and the holding struts also increase the total amount of the linear members of the guide device, it is necessary to use a large cylinder depending on the total amount of the device and the space occupied by the device.

  Furthermore, the traction cables arranged on both sides of the guide device act only to maintain a constant tension in the guide device and do not act to support the frame. In practice, the frame is supported by the bias of the traction cable 14.

  The object of the present invention is a guide for winding a flexible tube around a cylinder, which is easy to manufacture, is small and low in cost, and can solve the disadvantages mentioned above, in particular those associated with winding. To provide an apparatus.

The object is that the guide device of the present invention is formed to support at least two hydraulic flexible tubes extending in a direction orthogonal to the transverse member, and is periodically spaced over the entire length of the guide device. The guide device includes at least one support flexible tube having a diameter that is precisely equal to that of the hydraulic flexible tube, and the at least one support flexible tube is covered by a covering means. Comprising at least one support cable and forming a fastening means at its end.

It will be appreciated that the guide device is configured such that neither the end member nor the holding strut need be provided. Therefore, the number of manufactured and assembled parts is reduced.
Also, the hydraulic flexible tube and the supporting flexible tube have the same diameter, so that the two layers of the flexible tube can be connected to each other without risk of the tube being crushed when wound around the cylinder. Support each other.

  Furthermore, it should be noted that in Patent Document 1, two supporting flexible tubes are required, whereas in the present invention, only one supporting flexible tube is used. In particular, since the supporting flexible tube is forcibly arranged at the end, the holding strut and the end member are securely fixed by the flexible tube. In the present invention, several structures can be assumed for the arrangement of the supporting flexible tube.

Advantageously, at least some of the plurality of cross members comprise means for coupling with the means for securing the support flexible tube. In particular, the connecting block is a transverse member arranged at the end of the guide device. At the end of the supporting flexible tube, an auxiliary fixing member is provided which is fitted into a certain zone in the transverse member. Furthermore, in order to ensure the connection between the attachment fixing member of the supporting flexible tube and the connection block, one member having the shape of a jaw is arranged to face the block.

As another advantage, the support flexible tube comprises a plurality of support flexible tube portions.
Each support flexible tube portion is connected to the connection block when the same portion is disposed on either of the guide device edge, also connected with the stress absorbing transverse member provided with connecting means. The stress absorbing member is composed of two flexible tubes each including a flexible tube passage and a plurality of jaws for connecting the fixing means of the supporting flexible tube portion.

  The advantages of such a configuration become apparent, for example, when the supporting flexible tube is broken. In the device of Patent Document 1, the entire end member and the holding strut and the damaged cable strip must be discarded and reassembled. In the present invention, only the damaged supporting flexible tube portion is replaced. do it. Under such assumptions, it is clear that time loss during repair is a major disadvantage.

    The invention will be better understood and its advantages will become more apparent through the following detailed description with the embodiments described as non-limiting illustrations. The description refers to the following drawings.

  1 has a caterpillar vehicle 10 having an arm 12 on which a perforated frame 14 is suspended. Two pairs of drilling wheels 16 having a horizontal axis, driven by a plurality of hydraulic motors, are arranged at the lower end of the drilling frame 14. The perforated wheel 16 has a plurality of teeth arranged on the periphery and formed to cut the ground.

  The hydraulic pump 18 is disposed in the same portion of the frame 14 above the drilling wheel 16. The pump 18 sucks the particles cut by the milling cutter, and discharges the particles in the direction of the ground surface through the discharge pipe 20.

  In order for various hydraulic engines (motors, pumps, and ultimately other hydraulic components) to function, replenishment of hydraulic fluid is required. The hydraulic oil supply is performed via a plurality of hydraulic flexible tubes 22 that introduce hydraulic oil from the ground surface to various hydraulic devices. In fact, the hydraulic flexible tube 22 has precisely the same geometric shape and equal dimensions, in particular equal diameter. The flexible tube 22 is wound around the cylinder 13 fixed to the caterpillar wheel 10 upstream.

  As shown in FIG. 2, the hydraulic flexible tube 22 is collected in a guide device 24 and is held together. In this example, a guide device for eight hydraulic flexible tubes 22 is handled. In the guide device, the hydraulic flexible tubes 22 are held in parallel and in alignment with exactly two equal intervals between two adjacent flexible tubes 22.

  In addition, the guide device 24 comprises a single supporting flexible tube 26 that acts to maintain a constant tension in the guide device 24 and, in part, to hold the perforated frame 14. One important feature of the support flexible tube 26 is that it has exactly the same shape and dimensions as the hydraulic flexible tube 22. In the example shown in FIG. 2, the supporting flexible tube 26 has exactly the same cylindrical shape and the same diameter as the hydraulic flexible tube 22.

  A connecting block 28, which is a transverse element to which the hydraulic flexible tube 22 and the support flexible tube 26 are fixed, is disposed at each end of the guide device 24. By the connection block 28, the hydraulic flexible tube 22 is connected to the hydraulic oil supply source upstream and to the motor and the hydraulic pump 18 (not shown) downstream. The connecting block 28 connects the two guide devices to each other particularly when it is necessary to form a deep hole. In practice, one connecting block 28 is provided for every 30 meters of the hydraulic flexible tube 22.

  Accordingly, the connecting block 28 is a member having a plurality of cylindrical holes 30 arranged in parallel with each other at equal intervals throughout the block, and having a precise rectangular shape. The end of the hydraulic flexible tube 22 is closely fitted in the cylindrical hole 30.

  The support flexible tube 26 is also fixed to the connection block 28. As shown in FIG. 3, the supporting flexible tube 26 has fixing means shown in the form of a cylindrical ring 32 having ribs 34 on the outer surface at the end thereof.

Cylindrical ring 32 of the supporting flexible tube 26 has the shape of a jaw 38 provided with a semi-cylindrical recess, the two elongate members 36 and 37 opposed to the coupling block 28, to connect the connecting block 28. The end of the jaw 38 is fitted to the rib 34 of the cylindrical ring 32 by connecting the shapes. The two long members 36 and 37 are assembled so that the semicylindrical recesses of the members 36 and 37 face each other. The whole formed in this way has a length and width precisely equal to the length and width of the connecting block 28. The elongated members 36 and 37 also ensure the connection of the hydraulic flexible tube 22.

  According to the embodiment shown in FIG. 2, the supporting flexible tube 26 is constituted by a plurality of supporting flexible tube portions 26a and 26b. In practice, the length of the supporting flexible tube portions 26a, 26b is about 6 meters.

The supporting flexible tube portions 26a and 26b are connected to each other by a plurality of stress absorbing elements 40 which are cross members provided with means for connecting the fixing means of the supporting flexible tube 26. 2 and 3 illustrate the stress absorbing element 40. The stress absorbing element 40 includes two portions 40a and 40b facing each other. Each portion 40a, 40b includes a plurality of semi-cylindrical recesses for penetrating the hydraulic flexible tube 22, and two stationary rings 3 of two adjacent supporting flexible tube portions 26a, 26b.
It is an elongate member which has one recessed part for fixing 2 by shape connection .

  In order to maintain a constant interval between the flexible tubes 22, a plurality of spacer bars 42 are arranged on the flexible tube 22 along the longitudinal direction. In practice, one spacing bar 42 is arranged every 50 meters.

  3 and 4 show the structure of the supporting flexible tube 26 in more detail. In this structure, a metal support cable 44 is provided in the center, which acts to absorb traction stress generated in the guide device.

The support cable 44 is connected to the fixed ring 32 constituting the fixing means of the support flexible tube 26. More specifically, the end of the support cable 44 is connected to a sleeve 46 that faces the fixed ring 32.

  The supporting flexible tube 26 is covered by a covering means including a plurality of strut tubes 48 made of a plastic material and a flexible outer sheath 50 having the same diameter as the hydraulic flexible tube 22. In particular, such a coating allows the cable to be held in a central position within the support flexible tube 26.

The outer sheath 50 is also connected to the stationary ring 32. The fixed ring 32 includes two coaxial cylindrical members 52 and 53 in which the end of the outer sheath 50 is forcibly fitted.
The outer sheath 50 preferably extends at least to a position between the two stress absorbing elements 40.

  FIG. 5 shows another embodiment in which the guide device 24 comprises two supporting flexible tubes 26 and nine hydraulic flexible tubes 22. The benefit of having two support flexible tubes 26 is that the traction capability of the device is doubled while the bending effects that can be caused by rotation of the device about a single central flexible tube can be avoided. It is in.

  In yet another embodiment, the support flexible tube 26 is composed of a single member. In fact, in some cases it may be beneficial for the support flexible tube not to consist of a plurality of support flexible tube portions.

  In yet another embodiment, the support flexible tube 26 includes a plurality of support cables 44. For example, if the support flexible tube comprises three support cables 44 having a total cross-sectional area equal to the cross-sectional area of one cable, the traction capability will be precisely equal. In addition, the flexibility of the support flexible tube 26 is increased.

Another advantage is that if one of the cables breaks, at least temporarily, the remaining cables can absorb the traction stress.
The advantage of having a plurality of equal-diameter flexible tubes is that the flexible tubes can be wound around the storage cylinder 13 regularly and homogeneously without the risk of the hydraulic flexible tube 22 collapsing. .

  In addition, since the maximum height of the guide device 24 is precisely equal to the diameter of the flexible tube, the flexible tube has a very small structure in the winding position. Conversely, a longer flexible tube can be wound around the cylinder 13 as compared to the known case where the height of the guide device 24 is relatively large (eg, due to the presence of the end member). Furthermore, since the guide device 24 is relatively simple, use and maintenance by the user are facilitated.

The perspective view which shows the manufacturing equipment of the cast partition which has a large depth Perspective view showing a part of the guide device Side view showing part of the guide device Longitudinal cross-sectional view showing fixing means for supporting flexible tube in connecting block Top view showing a guide device comprising two supporting flexible tubes

Claims (15)

To the cylinder, comprising a plurality of transverse members formed to support at least two hydraulic flexible tubes extending in a direction orthogonal to the transverse members and periodically spaced over the entire length of the guide device In the guide device for winding the hydraulic flexible tube, the guide device includes at least one support flexible tube having a diameter precisely equal to that of the hydraulic flexible tube, and the at least one support flexible tube has an end. has a section, and provided with at least one support cable is covered by covering means, that end of the supporting flexible tube is a to consist fixing means for fixing the support cable to the cross member, wherein the guide apparatus. The guide device according to claim 1, wherein at least some of the cross members include a plurality of connecting means with a fixing means of the supporting flexible tube. The guide device according to claim 2 , characterized in that at least some of the cross members comprise a plurality of means for maintaining a constant spacing between different flexible tubes. The guide device according to claim 2, wherein at least some of the transverse members including the connecting means are a plurality of connecting blocks that act to connect the hydraulic flexible pipe to an external hydraulic engine. . The guide device according to any one of claims 2 to 4, wherein the supporting flexible tube includes a plurality of supporting flexible tube portions. At least some of the transverse member comprising the coupling means, and characterized by comprising a connection means of the fixed means of two of said supporting flexible tube portion adjacent to each of its faces, a plurality of stress-absorbing element The guide device according to claim 5. The guide device according to claim 1, wherein the support cable is connected to fixing means. The guide device according to claim 1, wherein the covering means includes one outer sheath and a plurality of strut means. The outer sheath is characterized by being forcibly fitted to the fixing means, guide apparatus according to claim 8. The guide device according to claim 1, wherein the guide device comprises a single supporting flexible tube. The guide device according to claim 1, wherein the guide device includes a plurality of supporting flexible tubes. The guide device according to claim 1, wherein the support flexible tube includes a single support cable. The guide device according to claim 11, wherein the support flexible tube includes a plurality of support cables. The guide device according to claim 1, wherein the support flexible tube includes a plurality of support cables. The guide device according to claim 11, wherein the support flexible tube includes a single support cable.

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