JP5639099B2 - Piping clamp and piping fixing structure for work equipment - Google Patents

Description

  The present invention relates to a piping clamp tool that can be used for a turning work machine used for construction and civil engineering, and a pipe fixing structure for the work machine.

  In turning work machines such as backhoes, a large number of piping hoses are connected between the hydraulic pump driven by the engine and the oil tank or control valve, and between the control valve and the actuator. In order to avoid contact with and interference with the frame and internal equipment, it is bound with a clamp and fixed to the frame to suppress vibration of the hose.

  For example, in Patent Document 1, three delivery hoses are bound and supported by a pipe clamp tool, and the pipe clamp tool is fixed to the side of the swivel base. In this piping clamp tool, both ends of a pressing member that clamps the hose are fixed to the swivel base by bolts or welded base members, respectively.

JP 2001-271375 A

  Since the base member is fixed to the side portion of the swivel base, the bolt clamp for opening and closing the pressing member can be attached / detached from the outside, and maintenance such as hose replacement is easy. However, in parts where the vehicle equipment is located above and below the engine, the vehicle equipment becomes an obstacle to the bolt mounting and removal from the top and bottom, making it difficult to perform maintenance such as hose replacement. It has become difficult to use in a form.

It is an object of the present invention to provide a piping clamp tool and a work machine piping fixing structure capable of solving such problems of the prior art.
In the present invention, one end of the pressing member is pivotally supported by the base member, and the other end of the pressing member is easily pressed from the side opposite to the fixing direction of the base fixing tool by a pressing fastener different from the base fixing tool for fixing the base member. An object of the present invention is to provide a piping clamp device that can be fastened to a pipe.

  In the present invention, one end of the pressing member is pivotally supported by the base member, and the other end of the pressing member is fastened from the side opposite to the fixing direction of the base fixing tool by a pressing fastener different from the base fixing tool for fixing the base member. It is an object of the present invention to provide a pipe fixing structure for a work machine that can support pipes even in a place with many obstacles and can easily perform maintenance using a pipe clamp tool that can be used.

Specific means for solving the problems in the present invention are as follows.
First, a base member 2 having insertion holes 6 for inserting the fixture 5 at both ends and supporting the pipe 3 between both ends, and a pressing member for holding the pipe 3 together with the base member 2 4 and
One end portion of the base member 2 and one end portion of the pressing member 4 are provided with a pivot shaft 7 on one side and a bearing portion 9 fitted on the pivot shaft 7 on the other side so as to be freely opened and closed. ,
Fastening portions 2a that can be fastened to the other end portion of the base member 2 and the other end portion of the pressing member 4 by a fastener 8 at a position shifted from the insertion hole 6 from the side opposite to the insertion direction of the fixture 5. 4a is provided.

Second, the middle part of the base member 2 is positioned one step higher than both ends, and a pedestal part 2b that supports the pipe 3 is formed. A pivot shaft 7 is provided on one end part side of the pedestal part 2b. A bearing portion 9 is provided on one end side of the member 4, and an abutting portion 4 b is formed in the vicinity of the fastening portion 4 a on the other end portion of the pressing member 4, which can abut on the other end portion side of the hill portion 2 b. It is characterized by.
Third, the engine 12, the hydraulic pump 13, the oil tank 14, and the control valve 18 are mounted on the body frame 11, and the plurality of pipes 3 that connect the hydraulic pump 13 and the control valve 18 are the above-described claims or The pipe clamp 1 is bound and supported by the pipe clamp 1 described in FIG. 2, and the pipe clamp 1 is attached to the upper surface of the body frame 11 on which the engine 12 is mounted via the fixture 5.
The machine body frame 11 includes an attachment portion 15 that faces the insertion holes 6 at both ends of the pipe clamp 1 and an opening 16 that opens the fastening portions 2a and 4a at the other end downward. .

According to the present invention, even if there is an obstacle on the side of the holding member of the pipe clamp, the holding of the holding member can be loosened from the side opposite to the side on which the base member is fixed, and the rotation can be released. Easy maintenance.
That is, in the invention according to claim 1, the holding member 4 whose one end is connected via the pivot shaft 7 to the base member 2 whose both ends are fixed to the body frame 11 via the fixture 5. The pipe 3 can be sandwiched and opened by opening and closing, and the other end of the base member 2 and the other end of the pressing member 4 can be fastened by the fastener 8 from the opposite side to the insertion direction of the fixture 5. it can.

In the invention according to claim 2, the pivot shaft 7 is provided on one end side of the hill portion 2 b in the middle of the base member 2, and the abutting portion 4 b of the pressing member 4 contacts the other end portion side of the hill portion 2 b. It is possible to contact, the positioning of the pressing member 4 at the time of closing can be ensured, and the fastening operation of the pressing member 4 can be facilitated.
According to the third aspect of the present invention, the opening 16 is formed from the lower side of the body frame 11 even if the work equipment is disposed on the upper surface of the body frame 11 after the piping clamp 1 is attached via the fixing tool 5. The fastening portions 2a and 4a can be tightened or loosened through the gaps.

It is a perspective view of the piping clamp implement open state which shows the embodiment of the present invention. It is a perspective view of a pipe clamp implement closed state. It is a side view of a piping clamp tool. It is a top view of a piping clamp fixture mounting state. It is a front view of a piping clamp tool. It is a top view of the swivel of a backhoe. It is a rear view of the swivel of a backhoe. It is a right view of the swivel of a backhoe. It is a perspective view of the swivel of a backhoe. It is a perspective view of a piping holder. It is a disassembled perspective view of the carrier roller of a backhoe. It is a disassembled perspective view of a carrier roller shaft. It is the whole backhoe side view.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
In FIG. 13, a small rear turning type backhoe is illustrated as the turning work machine 21, and this turning work machine 21 is schematically equipped with a turntable 23 mounted on a crawler type traveling device 22 via a vertical axis, A base portion of the first boom 25 of the excavating work device 24 is pivotally supported near the center of the upper portion of the platform 23, and a cabin 26 is disposed on the upper portion of the swivel base 23 behind the first boom 25. The engine 12 is installed.

  6 to 13, the swivel base 23 has a body frame 11 on the skeleton, and the body frame 11 stands on a flat base frame 11 </ b> A with a substantially frame-shaped vertical frame 11 </ b> B extending from the front to the rear. A pair of upper and lower swing brackets 11S that support the swing shaft that pivotally supports the base of the first boom 25 is provided at the front of the vertical frame 11B, and the rear vertical wall 11D is erected in a direction crossing the rear of the vertical frame 11B. To form the front wall of the engine room.

The base frame 11A is formed with an opening 11a in which a swivel joint is disposed at the center side, a motor attachment portion 11b to which a turning motor is attached, an engine room opening 11c behind the rear vertical wall 11D, and the like.
Further, an arrangement portion 11e for disposing the fuel tank 20 on the left side and a cylinder mounting portion 11f for the swing cylinder 17 are formed on the right side, and an oil tank 14 is mounted on the upper side of the cylinder mounting portion 11f. An attachment portion 11g is provided, and a mount portion 11h for mounting the engine 12 is formed behind the rear vertical wall 11D.

A multiple hydraulic pump 13 driven by a crankshaft is mounted on the left side of the engine 12, and the hydraulic pump 13 is connected to a control valve 18 through a plurality of pipes 3. It is erected on the upper right side of the frame 11 or mounted on the side of the oil tank 14.
The plurality of pipes 3 are bound together by a plurality of pipe clamps 1 in the longitudinal direction, and are attached by attaching the pipe clamps (hose clamps) 1 to the body frame 11, and may be formed of metal pipes. In the embodiment, it is formed of a hose, and is attached to the machine frame 11 during or before assembly of the engine 12, the hydraulic pump 13, the oil tank 14, the control valve 18 and the like, and the pipe clamp 1 is attached during maintenance. Open and exchanged.

  The piping clamp 1 is disposed in the vicinity of the engine room opening 11c of the machine body frame 11 where the engine 12 is disposed, and is mounted in the vicinity of the mounting portion 11g of the oil tank 14, the hydraulic pump 13, the radiator 31, and the like. A plurality of simple piping clamps 30 are arranged. Further, although not fixed to the body frame 11, a pipe holder 38 is provided as a pipe clamp tool for bundling a plurality of pipes 3 to keep them steady.

The mounting portion 11g of the oil tank 14 is formed by fixing the base plate 19 to the upper portion of the vertical plate, the front and rear legs 19a, etc. that form the cylinder mounting portion 11f.
The plurality of simple pipe clamp tools 30 have substantially the same structure. For example, the simple pipe clamp tool 30 attached to the side surfaces of the front and rear legs 19a of the attachment portion 11g of the oil tank 14 is a base member that holds the pipe 3 therebetween. The pressing member is formed by bending a band plate, and the pressing member is fastened to both legs 19a before and after the attachment portion 11g by bolts 30a from the outside.

  On the other hand, as shown in FIGS. 1 to 7, the pipe clamp tool 1 has a base member 2 having insertion holes 6 for inserting the fixtures 5 at both ends, and the pressing member 4 is near one end of the base member 2. One end portion is coupled to the base member 2 via the pivot shaft 7, and the pressing member 4 is openable and closable with respect to the base member 2 around the pivot shaft 7. The pipe 3 is sandwiched via 10.

The base member 2 bends both ends of the flat plate in a bowl shape, forms a high platform 2b that is one step higher than both ends in the middle, and fixes the pivot shaft 7 to one end of the high platform 2b. . The pivot shaft 7 is formed by bending the pin material into a U-shape (or P-shape or L-shape), welding and fixing the base side to the side surface of the hill portion 2b, and the straight tip end side of the hill portion 2b. It is arranged parallel to the top surface.
The base member 2 is formed wider than one end portion from the hill portion 2b to the other end portion, and half of the other end portion protrudes in the width direction from the one end portion and the cushion material 10, and the other end portion has a width direction. Bolt insertion holes are drilled at two locations.

  The hole at one end of the base member 2 on the side of the pivot shaft 7 and the hole at the position where the other end protrudes are insertion holes 6 into which a fixing tool 5 such as a bolt is inserted. The base member 2 is fixed to the body frame 11 by being inserted and screwed into the female screw hole formed in the body frame 11 from above. The hole at the extended position of the cushion member 10 of the base member 2 forms a fastening portion 2 a for fastening the pressing member 4.

The holding member 4 is formed by bending a band plate, and a cylindrical body is welded and fixed to one end portion to form a bearing portion 9. By fitting the bearing portion 9 to the pivot shaft 7, the base member 2 is formed. It is pivotally connected to.
The other end of the pressing member 4 (the end opposite to the bearing 9) faces the fastening portion 2a of the base member 2, and this end is perforated with a hole and welded with a nut 4d to fasten the fastening portion 4a. It can be fastened with a fastener 8 such as a bolt from below.

Accordingly, the fastening portion 4a is positioned in a symmetrical position with the fastening portion 2a and the insertion hole 6 on the one end portion side of the base member 2 with the pedestal portion 2b interposed therebetween. The position is shifted in the direction. Accordingly, the fastening portion 4 a on the other end side of the pressing member 4 does not overlap with the insertion hole 6 on the other end portion of the base member 2.
The holding member 4 has a long side surface from the midway portion facing the hill portion 2b to the other end portion where the fastening portion 4a is formed, and this side surface covers the side surface of the cushion material 10 and the surface on the other end portion side of the hill portion 2b. And an abutting portion 4b that can abut against the other end side of the hill portion 2b.

When the pressing member 4 is closed, the side contact portion 4b comes into contact with the surface on the other end side of the hill portion 2b, and the fastening portion 4a is disposed at an appropriate position with respect to the fastening portion 2a. By fitting the hole with the fastening portion 2a, the fastener 8 can be easily inserted.
The body frame 11 has an engine room behind the rear vertical wall 11D, and an engine room opening 11c is formed to release heat from the engine 12 disposed in the engine room. A front edge of the engine room opening 11c is formed. Is bent back and forth, is located between the insertion hole 6 on the other end side of the base member 2 and the fastening portion 2a, and a portion facing the insertion hole 6 of the body frame 11 is for attaching the base member 2 The engine room opening 11c which becomes the attachment part 15 and faces the fastening part 2a is the opening part 16.

  Therefore, both ends of the base member 2 are fixed to the mounting portion 15 by inserting the fixture 5 into the insertion hole 6 from above the body frame 11, whereas the other end of the pressing member 4 is the opening 16. The fastening tool 8 is inserted into the fastening part 2a and the fastening part 4a from below the machine body frame 11 via the joint, and both of them are fastened, and the working direction fastened by the fastening tool 5 and the working direction fastened by the fastening tool 8 The direction in which the bolt is inserted and tightened is reversed.

Then, when the fastener 8 is loosened from below the body frame 11 through the opening 16 without releasing the fixing of the base member 2, a hand is inserted from the opening 16 so that the pressing member 4 is centered on the pivot shaft 7. The pipe 3 can be exchanged by opening the holding member 4 by opening it.
The cushion material 10 is formed of an elastic material such as rubber, and includes a lower cushion material 10D fixed to the hill portion 2b of the base member 2, and an upper cushion material 10U fixed to the inner surface side of the pressing member 4 facing the hill portion 2b. Both cushion material 10D, 10U has the semicircular recessed part 10a fitted to the three piping 3 in an opposing surface.

Both cushion materials 10D and 10U have substantially the same width as the pressing member 4, and the same one can be used, but the upper cushion material 10U of the pressing member 4 is formed on the pressing member 4 on the opposite side to the recess 10a. A circular protrusion 10Ua fitted in the hole 4c is provided to increase the fixing strength to the pressing member 4.
The pipe holder 38 binds a plurality of (three) pipes 3 between the pipe clamp tool 1 and the simple pipe clamp tool 30. In FIG. 10, the pipe holder 38 is formed in a corrugated shape with resin or rubber, etc., and has a side holding recess 38a that opens in one direction (downward) on both sides and a middle holding recess 38b that opens in the other side (upward) in the center. Are formed in a horizontal row.

The pipe holder 38 has two pipes 3 on both sides fitted into the side holding recess 38a from the lower side, and the center one pipe 3 is fitted into the middle holding recess 38b from the upper side to keep the interval between the pipes 3 constant. Then, mutual vibration and vibration are stopped to prevent interference. The pipe holder 38 is particularly useful when the pipe 3 is a hose, and is easy to attach to the hose, change the position, and the like.
In the pipe holder 38, each of the holding recesses 38a and 38b is formed so that the opening opening is slightly narrower than the back, and the hose is press-fitted into a shape that does not come out, or the side holding recess 38a and the intermediate holding recess 38b The vertical hose is made different so that the central hose is triangularly arranged with respect to the two hoses on both sides, and the number of the downward holding side holding recesses 38a and the upward opening middle holding recesses 38b is increased or decreased. Or you may form so that four or more hoses can be hold | maintained.

6-9, the oil tank 14 mounted on the base plate 19 of the mounting portion 11g has a tank body 14B, which is a thin plate formed on a thick plate bottom plate 14A, fixed by welding. Four corners of 14A are bolted to the base plate 19.
Since the oil tank 14 has a thin tank main body 14B welded to a thick bottom plate 14A, the number of components is small and a flat surface is easily secured, and the bottom plate 14A is formed of a single thick plate. Therefore, welding distortion is difficult to occur.

Further, since the base plate 19 is also formed of a single thick plate, welding distortion is difficult to occur, and the horizontal accuracy of the contact surface with the bottom plate 14A is easily obtained.
In the engine room behind the rear vertical wall 11D of the body frame 11, an engine 12 is disposed, and a cooling air suction type radiator 31 is disposed on the right side. These include a left and right side cover 32, an upper cover 33 and A hood 34 (shown in FIG. 13) covers the periphery of the radiator 31, and a partition member is provided between the upper cover 33 and the hood 34, and the cooling air of the engine 12 flows into the suction side chamber of the radiator 31. It has no structure.

The suction side chamber of the radiator 31 has a lower temperature than the engine room, and has a good dustproof and waterproof atmosphere in order to circulate cooling air to be sent to the engine 12, and an engine control actuator 35 is provided in the suction side chamber. Is arranged.
The actuator 35 is an accelerator lever control AI motor, is disposed below the suction side of the radiator 31, and is connected to the engine 12 via an accelerator cable 36.

By arranging the actuator 35 in the suction side chamber, it is closer to the engine 12 than in the case where it is located below the cockpit of the cabin 26 or below the step portion, so that it is easy to assemble and ensures dustproof and waterproof properties. It will be possible.
11-13, the carrier roller of the crawler type traveling device 22 is shown. The crawler type traveling device 22 has a rear drive wheel 41, a front driven wheel 42, a plurality of intermediate lower rolling wheels 43 and an intermediate upper carrier roller 44 around a track frame 40, and a crawler 45 is wound around them. It is configured to hang.

The carrier roller 44 cantilever-supports one end of a roller shaft 47 on a support bracket 46 fixed to an intermediate upper surface of the track frame 40, and the roller member 50 is rotatable on the roller shaft 47 via a bearing 48, an oil seal 49, and the like. I support it.
The support bracket 46 has a bifurcated portion 46 a that clamps the small-diameter end portion of the roller shaft 47. The roller shaft 47 is fixed to the track frame 40 by fastening the bifurcated portion 46 a with a bolt 51. .

Two parallel flat portions 47a are milled at the small-diameter end of the roller shaft 47, and a parallel holding surface 46b facing the flat portion 47a is formed on the bifurcated portion 46a, and the flat portion 47a is held. The small diameter end portion of the roller shaft 47 is inserted into the bifurcated portion 46a of the support bracket 46 so as to be in contact with the surface 46b.
When the small-diameter end portion of the roller shaft 47 is formed in an oval cross-sectional shape having two flat portions 47a, the surface pressure between the flat portion 47a and the sandwiching surface 46b is lower than in the case of a circular cross section, and the roller shaft 47 Since the rotation of the support bracket 46 is prevented, the support bracket 46 is not scraped, and the support strength can be increased with respect to the load in the vertical direction.

In the present invention, the shape of each member and the positional relationship between the front, back, left, right, and top are best configured as shown in FIGS. However, it is not limited to the said embodiment, A member, a structure can be variously deformed, and a combination can also be changed.
For example, the base member 2 may be provided with the bearing portion 9, the holding member 4 may be provided on the pivot shaft 7, the base member 2 may be flat without the hill portion 2 b, and the abutting portion 4 b of the holding member 4 may be the lower cushion. You may make it contact | abut on the side surface of material 10D.

DESCRIPTION OF SYMBOLS 1 Piping clamp 2 Base member 2a Fastening part 2b Elevation part 3 Piping 4 Holding member 4a Fastening part 4b Abutting part 4d Nut 5 Fixing tool 6 Insertion hole 7 Pivot shaft 8 Fastening tool 9 Bearing part 10 Cushioning material 11 Airframe frame 12 Engine 13 Hydraulic pump 14 Oil tank 16 Opening 18 Control valve

Claims (3)

A base member (2) having an insertion hole (6) for inserting the fixture (5) at both ends and supporting the pipe (3) between both ends, and a pipe coupled with the base member (2) A holding member (4) for holding (3),
One end portion of the base member (2) and one end portion of the pressing member (4) are provided with a pivot shaft (7) on one side and a bearing portion (9) fitted on the pivot shaft (7) on the other side. ) Is provided and is connected to be freely opened and closed,
The other end of the base member (2) and the other end of the pressing member (4) are fastened from the opposite side of the insertion direction of the fixture (5) to a position shifted from the insertion hole (6). 8. A pipe clamp that is provided with fastening portions (2a, 4a) that can be fastened in step 8).   The middle part of the base member (2) is positioned one step higher than both end parts, and a pedestal part (2b) for supporting the pipe (3) is formed, and a pivot shaft (7) is formed on one end part side of the pedestal part (2b). ), A bearing portion (9) is provided on one end portion side of the pressing member (4), and in the vicinity of the fastening portion (4a) on the other end portion of the pressing member (4), the pedestal portion (2b) The piping clamp tool according to claim 1, wherein a contact portion (4b) capable of contacting the other end portion is formed. An engine (12), a hydraulic pump (13), an oil tank (14), and a control valve (18) are mounted on the body frame (11), and a plurality of pipes connecting the hydraulic pump (13) and the control valve (18) are connected. The pipe (3) is bundled and supported by the pipe clamp tool (1) according to claim 1 or 2, and the pipe clamp tool (1) of the body frame (11) on which the engine (12) is mounted. It is attached to the upper surface via a fixture (5)
The body frame (11) is an opening that opens downwardly the attachment portion (15) facing the insertion holes (6) at both ends of the pipe clamp (1) and the fastening portions (2a, 4a) at the other end. A work machine pipe fixing structure, comprising: a work section (16).

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