JP4894466B2 - Construction machine hose clamp device - Google Patents

Description

  The present invention relates to a clamp device that bundles and fixes a plurality of hoses in a construction machine such as a hydraulic excavator.

  The background art will be described taking a hydraulic excavator as a preferred example of the present invention as an example.

  As shown in FIG. 7, the hydraulic excavator is configured such that an upper swing body 2 is rotatably mounted on a crawler-type lower traveling body 1 and a work attachment 3 is mounted on the upper swing body 2.

  The work attachment 3 includes a boom 4 that can be raised and lowered, an arm 5 attached to the tip of the boom 4, a bucket 6 attached to the tip of the arm 5, and a boom and an arm that are hydraulic actuators for driving them. And bucket cylinders 7, 8, and 9.

  In this hydraulic excavator, a clamp device is used to fix each hose such as a hydraulic hose connecting the control valve provided on the upper swing body 2 and each hydraulic actuator in place.

  As shown in FIGS. 8 and 9, this clamping device is configured by bundling a plurality of (two in the illustrated example) hoses H, H in parallel on a single rubber grommet 10 and combining them as a set. 4 sets) and a pair of clamp bodies (first and second clamp bodies) 11 and 12 are collectively clamped. One of the clamp bodies 11, 12 (for example, the first clamp body 11) is fixed to the revolving frame constituting the upper revolving body 2.

  The grommet 10 is formed in an oval shape (a shape in which both sides of the rectangle are semicircular) with hose holes 13 and 13 provided at intervals, and the hoses H and H are fitted into the hose holes 13 and 13. In the inserted state, it is fitted into the concave grooves 14 of the clamp bodies 11 and 12.

  The grommet 10 is provided with slits 15 and 15 for opening the hose holes 13 and 13 when the hose is fitted, and both side flanges 16 (only one side is shown) for preventing the groove 14 from coming off.

  The clamp bodies 11 and 12 are formed in a comb shape in which a plurality of concave grooves 14 (four) are provided at regular intervals, and are abutted in a state where the grommets 10 are accommodated in the respective concave grooves 14. Fastened with screws 17 and 17.

  In FIG. 9, 18 and 18 are screw holes provided in the first clamp body 11, and 19 and 19 are screw-through holes provided in the second clamp body 12.

  In the conventional clamping device, as shown in Patent Document 1, both clamp bodies 11 and 12 are symmetrical (half-divided), and the depth X of each concave groove 14. The total length in the longitudinal direction when viewed from the front (the oblong vertical dimension excluding the flange 16) Y is set to approximately ½.

Therefore, when performing the clamping operation, normally, a procedure is adopted in which a half part of the grommet 10 is fitted into the first clamp body 11 on the fixed side, and the second clamp body 12 is put on the protruding half part and fastened.
JP-A-11-200408

  The grommet 10 is set slightly larger than the concave groove 14 (which becomes an oval hole in the butted state) of both the clamp bodies 11 and 12 so as not to rattle or come off in the clamped state, and uses elasticity. And press-fitted into the concave groove 14.

  In this case, normally, a procedure is adopted in which the grommet 10 is pushed into the first clamp body 11 fixed to the machine side, and the second clamp body 12 is put on the protruding portion of the grommet 10 and pushed.

  However, although the grommet 10 can be pushed into the first clamp body 11 relatively easily while allowing flexibility due to the orientation, inclination, elastic deformation, etc. of the grommet 10, the second clamp is then applied to the protruding portion of the grommet 10. When the body 12 is pushed in, the clamp body 12 is pushed all the way while receiving the resistance of the grommet 10 and the operation of using the tightening force of the screws 16 and 16 in the final stage must be performed.

  That is, a large pushing force and a pushing allowance are required for the clamping operation, and the clamping work is very troublesome.

  On the other hand, since both the clamp bodies 11 and 12 are symmetrical, it is necessary to change the depth of the concave grooves between the two grommets 10 according to the number of hoses (grommet size) bundled together. That is, for each of the clamp bodies 11 and 12, a plurality of pairs having different groove depths must be prepared according to the grommet size and used separately, which increases the number of parts, which is disadvantageous for cost and handling. .

  Therefore, the present invention provides a hose clamp device for a construction machine that can easily and efficiently perform a clamping operation and can share one clamp body regardless of the number of hoses to be bundled.

The invention of claim 1 is provided with a grommet formed in a frontal oval shape in which both ends of a rectangle are semicircular and provided with a plurality of hose holes in parallel, and a pair of clamp bodies provided with concave grooves, A plurality of hoses are fitted in the hose holes of the grommets and bundled in parallel, and with the grommets fitted in the concave grooves of the clamp bodies, the clamp bodies are fastened in an opposing posture by fastening means. In the hose clamp device of construction machinery that fixes
(I) The two clamp bodies are asymmetric shapes having different depths of the grooves,
(Ii) The overall dimension in the longitudinal direction of the grommet in front view is A, the radius of the semicircular portion at both ends in the longitudinal direction of the grommet is B, the above A-B is C, and the concave of the first clamp body having a large depth of the concave groove Assuming that the groove depth is D and the groove depth of the second clamp body having a small groove is E, C≈D and B≈E are set.

  According to a second aspect of the present invention, in the configuration of the first aspect, the first and second clamp bodies are each provided with a plurality of concave grooves, and a plurality of hoses are used as one set to fix the plurality of sets between the clamp bodies. It is configured.

  According to a third aspect of the present invention, in the configuration of the first or second aspect, the first clamp body is fixed to a fixed portion of the machine, and the second clamp body is fastened to the first clamp body by fastening means. It is.

According to the present invention, since both clamp bodies have asymmetric shapes with different groove depths and the groove depths are set to the above-mentioned dimensions in relation to the grommet dimensions, the second clamp body is set to the protruding end of the grommet. The portion (semicircular portion) can be covered with almost no resistance, and can be fastened to the first clamp body with a minimum pushing allowance. That is, the clamping operation can be performed easily and efficiently.

  The effect of this point is that, particularly when a plurality of sets of hoses are clamped simultaneously as in the invention of claim 2, and after the grommet is fitted into the first clamp body fixed to the machine side as in the invention of claim 3. This is remarkable when a procedure for fastening the second clamp body to the protruding portion of the grommet must be taken.

  Moreover, a 2nd clamp body can be shared with respect to the 1st clamp body from which a ditch | groove depth changes according to the number of hoses bundled (grommet size) by the said dimension setting. For this reason, the number of parts is small, which is advantageous for cost and handling of the clamping device.

  An embodiment of the present invention will be described with reference to FIGS.

1st Embodiment (refer FIGS. 1-4)
In the first embodiment, as shown in FIG. 1, one of the swing frames 23 constituting the upper swing body 2 (see FIG. 7) of the hydraulic excavator is provided for the hydraulic hose clamping device that connects the control valve CV and the hydraulic actuator. A case where the first clamp body 21 is fixed to the boom mounting bracket 24 via the clamp mounting member 25 and the clamp seat 26 is taken as an example.

  Further, in the first embodiment, two hoses H, H are bundled with one rubber grommet 20, and four sets as a set are clamped together by the first and second clamp bodies 21, 22. The configuration is taken.

  The grommet 20 has an oblong shape in front view provided with hose holes 27, 27, slits 28, 28, and both side flanges 29, 29 for retaining, like the grommet 10 of the conventional clamping device shown in FIGS. The hoses H and H are fitted in the hose holes 27 and 27 and are fitted in the concave grooves 30 and 31 of the clamp bodies 21 and 22, respectively.

  Both clamp bodies 21 and 22 are formed in a comb shape in which concave grooves 30... 31 are provided at regular intervals, and are abutted in a state where the grommets 20 are accommodated in the respective concave grooves 30. Are fastened by two screws 32, 32. Thereby, the hose group is fixed to the boom mounting bracket 24 in a clamped state.

  3 and 4, 33 and 33 are screw holes provided in the first clamp body 21, and 34 and 34 are screw through holes provided in the second clamp body 22.

  Both clamp bodies 21 and 22 have asymmetric shapes in which the depths of the respective concave grooves 30 and 31 are different, and the concave groove depth is set as follows in relation to the grommet 20.

As shown in FIG. 4, the longitudinal dimension of the grommet 20 in the front view (the elliptical vertical dimension excluding the flange 29) is A, and the outer half of the hose H fitted in the hose hole 27 of the grommet 20 is covered. The radius of the grommet end portion (semicircular portion) is B, the above AB is C, the depth of the first clamp body 21 with the large depth of the concave groove 30 is D, and the depth of the concave groove 31 is small. 2 Let E be the depth of the concave groove of the clamp body 22,
C ≒ D 、 B ≒ E
Is set to

According to this configuration, the grommet 20, since a state is fitted to the first clamp member 21, only the semicircular shaped portion of one end side (radius B) protrudes from the clamping member 21, the second against the protruding portion The clamp body 22 can be fitted to the first clamp body 21 with almost no resistance and with a minimum push-in allowance (almost 0).

  That is, instead of pushing the second clamp body 12 over the dimension X that is ½ of the total length Y of the grommet as in the conventional clamping device shown in FIGS. 8 and 9, the second clamp body 22 is simply placed at the protruding portion of the grommet. Just cover it.

  For this reason, the clamping operation can be performed easily and quickly. In particular, when a plurality of sets of hoses are clamped at the same time as in this embodiment (when the total pushing resistance is increased), this effect becomes remarkable.

Second embodiment (see FIG. 5)
In the first embodiment, a configuration in which two hoses H, H are bundled with one grommet 20 is adopted, whereas in a second embodiment, a configuration in which three hoses H ... are bundled with one grommet 20 is employed. ing. Other configurations including the grommets 20 and the groove depth setting are the same as those in the first embodiment.

According to the clamp device, the groove depth of the second clamping member 22 E is almost the same as the radius B of the semicircular portion of the grommet end, in the case of bundling the two hoses as in the first embodiment And it is not necessary to use the 2nd clamp body 22 separately by the case where three hoses are bundled like 2nd Embodiment. That is, the 2nd clamp body 22 can be shared with respect to the 1st clamp body 21 from which a ditch | groove depth changes according to the number of hoses to be bundled (grommet size).

  For this reason, the number of parts can be reduced, the cost can be reduced, and it is advantageous for storage and other handling.

3rd Embodiment (refer FIG. 6)
In the first and second embodiments, on the premise that the same-diameter hose is divided into a plurality of sets and clamped, the sizes of all concave grooves 30..., 31. In the third embodiment, a configuration is used in which a plurality of sets of hoses having different diameters are clamped.

  Further, in the drawing, two types of hoses having different diameters are illustrated as being bundled and clamped on two grommets 20 and 20 having sizes suitable for each, and the concave grooves 30 and 22 of both the clamp bodies 21 and 22 are illustrated. 31 is also provided in two sizes depending on the grommet size.

  Also in the third embodiment, the dimensional relationship between the corresponding grommet 20 and the concave grooves 30, 31, that is, the relationship of C≈D and B≈E is the same, and the same effect as both the first and second embodiments is obtained. Obtainable.

It is a perspective view of a part of upper revolving unit in which the clamp apparatus and the apparatus according to the first embodiment of the present invention are installed. It is an enlarged view of the clamp apparatus in FIG. It is a disassembled perspective view of a clamp apparatus. It is an enlarged plan view of the apparatus. It is FIG. 4 equivalent view of the clamp apparatus concerning 2nd Embodiment of this invention. It is a top view before the fastening of the clamp apparatus concerning 3rd Embodiment of this invention. 1 is a schematic side view of a hydraulic excavator as an example of a machine to which the present invention is applied. FIG. 3 is a view corresponding to FIG. 2 of a conventional clamping device. It is an enlarged plan view before fastening of the apparatus.

DESCRIPTION OF SYMBOLS 20 Grommet 21 1st clamp body 22 2nd clamp body H hose 23 Revolving frame as a fixed part of a machine 24 Boom mounting bracket 25 Clamp mounting member 26 Clamp seat 27 Grommet hose hole 30 Groove of first clamp body 31 2nd Groove 32 of clamp body 32 Screw as fastening means

Claims (3)

A grommet having a semicircular shape at both ends of a rectangle and having a plurality of hose holes provided in parallel, and a pair of clamp bodies having concave grooves, and a plurality of hoses are provided on the grommet. A hose for construction machinery in which the grommet is bundled in parallel in the hose holes of the two clamps, and the grommets are fitted in the concave grooves of the clamp bodies, and the clamp bodies are fastened in an opposing posture by fastening means to fix the hoses. In the clamping device,
(I) The two clamp bodies are asymmetric shapes having different depths of the grooves,
(Ii) The overall dimension in the longitudinal direction of the grommet in front view is A, the radius of the semicircular portion at both ends in the longitudinal direction of the grommet is B, the above A-B is C, and the concave of the first clamp body having a large depth of the concave groove A hose clamp device for a construction machine, wherein the groove depth is set to D, and the groove depth of the second clamp body having a small groove is set to E, so that C≈D and B≈E.   The construction according to claim 1, wherein a plurality of concave grooves are provided in each of the first and second clamp bodies, and a plurality of hoses are set as one set and the plurality of sets are fixed between the clamp bodies. Mechanical hose clamp device.   3. The hose clamp for a construction machine according to claim 1, wherein the first clamp body is fixed to a fixed portion of the machine, and the second clamp body is fastened to the first clamp body by fastening means. apparatus.

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