JPS6136861Y2 - - Google Patents

Description

[Detailed description of the invention] This invention is a multi-tube hydraulic system in which a large number of flexible small-diameter hoses are housed in one flexible large-diameter coated hose to distribute and supply pressure fluid to work equipment. Regarding hoses.

When performing underground work such as mining or coal mining, in order to operate equipment such as self-propelled shoring, loading equipment, or conveying equipment, a large number of hydraulic hoses that should be connected to individual actuators are combined into a single connector. A multi-tube type hydraulic hose is used that can be connected simultaneously to various devices in a compact manner through a cap nut. A sleeve-like joint is connected to the annular collar part, a jacket hose is crimped to the joint, and an annular retaining plate having a central hole inside the casing and a number of through holes around the periphery. are rotatably attached, and the insert portions of the required number of cardiac conduit tips housed in the jacket hose are loosely fitted into these through holes, and the insert portions of the slightly larger diameter return conduits that also serve as positioning pins are inserted through them. Then, each insert body part is fixed with an elastic lock washer, and while the insert body part of each conduit is fitted into the insert body opening of the mating coupling part of the hydraulic device, the casing part of the nut is screwed into the coupling part and connected. Such a method has been proposed as Japanese Patent Application Laid-Open No. 105984/1984.

By the way, in this case, with the annular protection plate attached to the inner thread of the cap nut's casing, insert the insert parts of the conduits one by one into the many holes on the protection plate, and insert them from the front side. An elastic locking washer must be installed, which requires a large number of assembly steps, and is difficult to assemble in a narrow space.
In addition, since each insert part is supported by only one annular protection plate, the installation condition is unsafe, and furthermore,
In this case, the casing parts are connected by screws, which not only takes time, but also makes it difficult to tell if the casing is partially screwed (leaking), and requires a long tool to rotate the casing. It is not suitable for use in confined spaces, and since the large number of conduits are simply housed side by side in the jacket hose, if the jacket hose is bent, the conduits on the outside will stretch and the conduits on the inside will contract. There is a problem that the life of the conduit is shortened by repeating this process.

In addition, the required number of conduits and cables that serve both as reinforcement and power transmission are spirally wound around the core member to serve as a multi-tubular underwater pipe that sends pressurized fluid to the seabed and pumps up oil. , they are bonded with a non-foaming filler such as polyvinyl chloride or neoprene, and the outside is surrounded by a foamable filler.
Furthermore, the one whose surface was covered with a protective tube was published in 1973.
Proposed as No. -25613.

By the way, with this method, many conduits are joined together with the center tube using a filler material, resulting in poor flexibility as a whole, and the drawback is that it is difficult to attach connecting fittings to the many conduits and the outer protective tube. There is.

Therefore, this invention eliminates the need for a lock washer etc. for each cap when installing a large number of small diameter hose caps.
A multi-tube hydraulic system that requires no effort to assemble and is easy to work with, provides stable support for the base, and is easy to connect with the other connecting member, and does not apply excessive tension or compression to small-diameter hoses. The hose is provided with a box-shaped or cylindrical head and a stepped sleeve to form an outer cylinder, and a flexible covered hose is fixed to the rear end of the stepped sleeve via a socket. Inside the outer cylinder, the rear peripheral edge engages with a step formed at the inner center of the outer cylinder, and the peripheral part is provided with numerous pin insertion holes along the circumference, and the front surface is provided with a positioning hole. A disk-shaped front clamp with a pin implanted therein, and a rear clamp having a slightly smaller diameter and having the same number of hose receiving recesses as the pin insertion holes on the circumferential surface are arranged at a required interval, Both clamps are separably connected by a center bolt, and the front clamp is fixed to the outer cylinder, and the front parts and mouthpiece pins of many small diameter hoses are fitted and supported in the recess of the rear clamp and the insertion hole of the front clamp. , these small-diameter hoses are tied together in a spiral shape and housed in a covered hose, and a window hole for inserting a connection adapter is provided on the front surface of the head, and vertical holes are provided on both sides, and the vertical hole 8 is provided with a window hole for inserting a connection adapter. It is characterized by a U-shaped pin inserted through it and connected to a connection adapter.

Embodiments of this invention will be described below with reference to the drawings.

In Fig. 1, 1 is a box-shaped or cylindrical head 1
an outer cylinder consisting of a and a stepped sleeve 1b,
A socket 1c is assembled to the rear end of the stepped sleeve 1b, and a front end of a flexible covered hose 2 is caulked between the outer periphery of the rear end of the stepped sleeve 1b and the socket 1c. , an annular stepped portion 1e is provided at the inner center of the outer cylinder 1, and the rear peripheral edge thereof engages with the stepped portion 1e, and as shown in FIG. Stepped pin insertion hole 3a
and a disk-shaped front clamp 3 with a central screw insertion hole 3b and a positioning pin 7a implanted in the front surface, and a disk-shaped front clamp 3 with a slightly smaller diameter than this, with the pin inserted through the circumferential surface as shown in Figure 2 (b). A rear clamp 4 having the same number of stepped semicircular hose receiving recesses 4a as holes 3a and a central threaded hole 4b is arranged at a required interval, and the front and rear clamps 3, 4 are attached to the center bolt 5. The front clamp 3 is thus separably coupled, and the front clamp 3 is fixed to the outer cylinder 1 by machine screws 9a (FIG. 3).

Small-diameter hoses 6 for conveying pressure fluid are fitted into the recesses 4a on the circumferential surface of the rear clamp 4, and the cap pins 7 caulked to the tips of the small-diameter hoses 6 are connected to each of the front clamps 3. The pins are inserted into the pin insertion holes 3a and housed in the head 1a, and the head 1a has a circular window hole 1d on the front end surface into which a connection adapter (to be described later) is inserted, and on both sides there are holes for coupling. A vertical hole 8 into which the U-shaped pin 10 is inserted is bored from the top surface, and a small hole 9 for inserting a small screw 9a for fixing the front clamp 3 is provided in the center of the top surface.

A large number of small-diameter hoses 6 held in the outer cylinder 1 via cap pins 7 are each wound into a spiral shape and housed in the covered hose 2, as shown in FIG. Therefore, even if the covered hose 2 is bent, the small-diameter hose 6 is not forcibly pulled or compressed, so the resistance is small and the flexibility of the hose 2 is maintained.

When storing a large number of small-diameter hoses 6 in a spiral bundle in the covered hose 2 as described above,
Each small diameter hose 6 with a cap pin 7 caulked to the end
The length is made a certain length longer than the covered hose 2 with the outer cylinder 1 attached to both ends, and each small diameter hose 6 is inserted into the covered hose 2 and both ends are connected to the fourth hose.
As shown in the figure, the small diameter hoses 6 are exposed from the outer cylinder 1, and in this state, each small diameter hose 6 is fitted into the circumferential recess 4a of the rear clamp 4, and each cap pin 7 is inserted into the insertion hole 3a of the front clamp 3, respectively. By connecting the clamps 3 and 4 with the center bolt 5 and then rotating the connecting clamps 3 and 4 located on both sides of the covered hose 2 in opposite directions, a large number of small diameter hoses 2 can be formed into a spiral as shown in FIG. The connecting clamps 3 and 4 enter the outer cylinder 1 and the rear peripheral edge of the front clamp 3 comes into contact with the annular step 1e. What is necessary is to align the screw hole with the small hole 9 of the outer cylinder 1 and fix both with the small screw 9.

FIG. 5 shows a connection adapter 11 that serves as the counterpart of the hydraulic hose and is attached to a required location on the work equipment.
It shows a cylindrical main body 11a inserted into the head 1a of the outer cylinder 1 and a flange 11 of an appropriately shaped shape.
A pressurized liquid passage hole 12a and insertion holes 12 for the cap pins 7 communicating therewith are bored in the axial direction in the periphery of the cylindrical main body 11a in the same number as the pins 7, and an inlet of each insertion hole 12 is formed. Grooves 12b with a larger diameter than the insertion hole 12 are formed at each end, and the grooves 1
A seal ring 13 made of an elastic material and having an inner diameter slightly smaller than that of the cap pin 7 and a presser ring 14 made of a synthetic resin material are fitted into the ring 2b.

A stepped screw hole 15 is provided in the center of the cylindrical body 11a, into which the boss 20a of the lid 20 having the same diameter as the disk is fitted, and a stepped screw hole 15 is provided in a part of the periphery. A pair of positioning pin holes 16
a, 16b are provided, and an annular groove 17 for receiving a U-shaped pin 10 for coupling is formed in the center of the circumferential surface.

The disc-shaped lid 20 has a boss portion 20a at the center of the back surface, a stepped bolt hole 21 at the center, and an insertion hole 22 for the cap pin 7 at the periphery.
The same number of cylindrical bodies 1 are provided in a part of the periphery.
A positioning pin 23 protruding toward 1a and a pin hole 24 for receiving a positioning pin 7a on the front clamp 3 are provided.

Therefore, this lid body 20 has a seal ring 13 in each slot 12b of each pin insertion hole 12 as described above.
And after fitting the presser ring 14,
While inserting the positioning pin 23 into one pin hole 16a of the cylindrical body 11a, the boss portion 20a is fitted into the stepped screw hole 15, and the bolt 25 is inserted through the center bolt hole 21 into the screw hole 15. By screwing them together and tightening them, they are fixed integrally to the cylindrical body 11a. At this time, the insertion hole 22 of the cap pin 7 of the lid body 20 and the insertion hole 12 of the cylindrical body 11a are aligned, and the slot Seal ring 1 attached to 12b
3 and the presser ring 14 are prevented from falling off.

Therefore, the outer tube 1 integrated with the covered hose 2 is fitted into the connection adapter 11 attached to the work equipment via the flange 11b through the window hole 1d, and the positioning pin 7a on the front clamp 3 is inserted into the connection adapter 11 attached to the work equipment via the flange 11b. When inserted into the pin holes 24 of the lid body 20, the cap pins 7 of the large number of small diameter hoses 6 are aligned with each insertion hole 22 of the lid body 20, and in this state, the outer cylinder 1 is pressed toward the adapter 11 side. , each cap pin 7
and the positioning pins 7a are located in the holes 22, 24.
It passes through and deeply fits into each insertion hole 12 and pin hole 16b of the cylindrical main body 11a.

Therefore, if the U-shaped pins 10 are inserted into the vertical holes 8 on both sides of the outer cylinder 1 from above, the U-shaped pins 10
0 engages with the annular groove 17 of the cylindrical main body 11a, the connection adapter 11 and the outer cylinder 1 are integrally connected, and the large number of small diameter hoses 6 communicate with the pressure fluid passage hole 12a of the connection adapter 11. Accordingly, pressure fluid from the hydraulic pressure source can be supplied to the required actuators, respectively.

At this time, the cap pin 7 of each small-diameter hose 6 is in close contact with the seal ring 13 fitted into each groove 12b of the cylindrical main body 11a all around, and the joint portion is sufficiently sealed.

Then, by removing the U-shaped pin 10 from the outer cylinder 1 and pulling out the outer cylinder 1, the outer cylinder 1 and the covered hose 2 can be easily separated from the connection adapter 11.

As described above, in this invention, the end cap pins of a large number of small diameter hoses are fitted and supported by the front clamp and the rear clamp, so they can be supported reliably and stably. Assembling to the rear clamp can be done outside the outer cylinder, and the front and rear clamps are connected with one central bolt, and only the front clamp needs to be fixed to the outer cylinder, making it easy to install small diameter hoses. The assembly work is easier and requires fewer man-hours than the above-mentioned prior art, and the connection with the mating adapter is done in a one-touch manner by simply inserting and removing the U-shaped pin, without using screws. Connection and separation work can be done quickly, no long tools are required, and it is suitable for use in narrow spaces.Also, the connection condition is always constant, there is no risk of defects such as half-threading, and there are many Small-diameter hoses are spirally wound and housed in covered hoses without being fixed with filler, so even if the covered hose is bent, unreasonable tension or compression will be applied to the small-diameter hoses. It maintains its flexibility like a single hose and can withstand long-term use.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway perspective view of an embodiment of this invention.
Figures 2A and 2B are perspective views of the front and rear clamp halves. FIG. 3 is a cutaway side view of the state in which the hose is accommodated. FIG. 4 is a half-sectional side view of the state in which the front and rear clamps are attached to the hose. FIG. 5 is an exploded perspective view of the connection adapter. FIG. 6 is a half-sectional side view of the connecting body of this invention coupled to an adapter. In the figure, 1...outer cylinder, 1a...head, 1b...stepped sleeve, 1c...socket, 1d...window hole,
1e...Stepped portion, 2...Coated hose, 3...Front clamp, 4...Rear clamp, 5...Center bolt, 6...Small diameter hose, 7...Best pin, 8...
Vertical hole, 10...U-shaped pin.

Claims (1)

[Scope of utility model registration request] Box-shaped or cylindrical head 1a and stepped sleeve 1
A flexible covered hose 2 is fixed to the rear end of the stepped sleeve 1b via a socket 1c. 1, and has a large number of pin insertion holes 3a along the circumference, and has a positioning pin 7a implanted in the front surface. A rear clamp 4 having a slightly smaller diameter and having the same number of hose receiving recesses 4a as the pin insertion holes 3a on the circumferential surface are arranged at a required interval, and both clamps 3 and 4 are arranged at a required interval. The front clamp 3 is separably connected to the outer cylinder 1 by a central bolt 5, and a large number of small diameter hoses 6 are attached.
The front part and the mouthpiece pin 7 are fitted and supported in the recess 4a of the rear clamp 4 and the insertion hole 3a of the front clamp 3, and the small diameter hoses 6 are tied together in a spiral shape and housed in the covered hose 2, A window hole 1d for inserting a connection adapter is provided on the front surface of the head 1a, and vertical holes 8 are provided on both sides, and a U-shaped pin 10 is inserted into the vertical hole 8 to be connected to the connection adapter. A multi-tube hydraulic hose.