JP2008038469A - Counter weight - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a counter weight which can prevent a pipe arranged therein from being deformed. <P>SOLUTION: A shell filler weight shielding body 22 is formed of a plurality of slabs that are not deformed even if the weight of a shell filler is imposed thereon, in an external shell 21 in which the shell filler such as concrete or iron powder is filled. The shell filler weight shielding body 22 is formed of lower-stage slabs 25 each having a pipe mounting space 24, intermediate-stage slabs 27 each having a pipe arrangement space 26, and an upper-stage slab 28 for closing the pipe arrangement spaces 26. Thus a series of spaces that can shield the weight of the shell filler is formed in the external shell 21 by enclosing the slabs. Then locators 31 for positioning both ends of each pipe are arranged in the space enclosed by the shell filler weight shielding body 22, and a pipe 32 to be connected to heat exchanging equipment or to hydraulic equipment mounted on the locator 31, is also arranged. Further the space enclosed by the shell filler weight shielding body 22 is also filled with the shell filler. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a counterweight with a built-in pipe.

Some counterweights mounted on hydraulic excavators are filled with heavy objects such as concrete and cutting metal pieces to ensure a predetermined weight, and piping for connecting a heat exchanger is provided (for example, patents) Reference 1).
JP 2000-120439 A (page 4-5, FIG. 3-4)

  Thus, what provides piping in a counterweight will be in the state by which piping was embedded in the filler, and there exists a problem which piping deform | transforms with the weight of a filler. Even when a hollow pipe (duct) is installed in the counterweight and the pipe is disposed in the hollow pipe, there is a problem that the pipe is deformed together with the hollow pipe.

  The present invention has been made in view of these points, and an object of the present invention is to provide a counterweight capable of preventing deformation of piping disposed inside.

  According to the first aspect of the present invention, there is provided a space in the outer shell body that is surrounded by the outer shell body and a member that is not deformed even when receiving the weight of the filling material that is filled in the outer shell body and that can block the weight of the packing material. It is a counterweight provided with the filling weight blocker to be formed and a pipe disposed in a space surrounded by the fill weight blocker.

  According to a second aspect of the present invention, in the counterweight according to the first aspect, a positioning plate is provided for positioning both ends of the pipe.

  According to a third aspect of the present invention, in the counterweight according to the first or second aspect, the space surrounded by the filler weight blocker is filled with the filler.

  According to a fourth aspect of the present invention, the filler weight blocker in the counterweight according to any one of the first to third aspects is formed of a slab material.

  According to a fifth aspect of the present invention, there is provided a lower slab material having a pipe mounting space in which a plurality of filler weight blockers in the counterweight according to the fourth aspect are arranged via mounting recesses opened in the lower part, A middle slab material having a piping arrangement space arranged on the upper side of the slab material, and an upper slab material arranged on the upper side of the middle slab material and closing the piping arrangement space.

  According to the first aspect of the present invention, since the pipe is arranged in the space surrounded by the filler weight blocker, the weight of the filler can be prevented from acting on the pipe, and the pipe can be deformed. Can be prevented.

  According to the second aspect of the present invention, the piping can be easily positioned in the filling weight blocking body by the positioning plate.

  According to the invention described in claim 3, the piping can be positioned by filling the space surrounded by the filler weight blocker and the use of the filling space without waste can be achieved. .

  According to the invention described in claim 4, since the pipe is disposed in the space surrounded by the slab material, the strength of the slab material can surely prevent the weight of the filler from acting on the pipe. At the same time, the slab material itself can effectively function as a heavy weight of the counterweight.

  According to the invention described in claim 5, the pipe attached in the pipe mounting space of the lower slab material is arranged in the pipe installation space of the middle slab material so as to bypass the mounting recess. The filler weight from the upper side concerning piping can be interrupted | blocked by the upper slab material, and the durable piping structure suitable for the counterweight which has an attachment recessed part in the lower part can be provided.

  Hereinafter, the present invention will be described in detail with reference to one embodiment shown in FIGS.

  FIG. 7 shows a hydraulic excavator 11 as a work machine. An upper swing body 13 is turnable with respect to the lower traveling body 12, and a cab 14 and a work device 15 are disposed on the front portion of the upper swing body 13. A power unit 16 such as an engine, a hydraulic pump, and a generator is mounted on the rear of these, and a counterweight 17 is mounted on the rear of the upper swing body 13.

  FIG. 1 shows a counterweight 17 mounted on an upper swing body 13 of a hydraulic excavator 11, and the weight of the filler is filled in an outer shell body 21 filled with a filler (not shown) such as concrete or iron powder. The filler weight blocker 22 is composed of a plurality of slab materials that are not deformed even when subjected to the above.

  This filling weight blocker 22 is disposed on the upper side of the lower slab member 25 having a plurality of pipe mounting spaces 24 arranged through a plurality of mounting recesses 23 opened in the lower portion, and the lower slab member 25. Unlike a mere duct, these slabs are provided with a middle slab material 27 having a pipe placement space 26 and an upper slab material 28 disposed above the middle slab material 27 and closing the pipe placement space 26. A series of spaces 24, 26, 24 surrounded by the materials 25, 27, 28 and capable of blocking the weight of the filling are formed in the outer shell 21.

  The left and right pipe mounting spaces 24 surrounded by the filler weight blocker 22 are provided with locators 31 as positioning plates for positioning both ends of the pipe, and a series of spaces surrounded by the filler weight blocker 22 A pipe 32 such as a hose or a tube (metal pipe) for connecting a heat exchanger or connecting to a hydraulic device, which is attached to the locator 31 and positioned, is disposed in the 24, 26, 24.

  A series of spaces 24, 26, 24 surrounded by the filler weight blocker 22 is also filled with a filler (not shown) such as concrete or iron powder.

  The mounting recess 23 and the lower slab material 25 are mounted on the bottom plate 33 of the counterweight 17, and a pair of locators 31 are formed so as to partition the pipe mounting space 24 from the bottom plate 33 to the lower surface of the middle slab material 27. It is protruding. On the side opposite to the pipe 32 side of these locators 31, pipe connection spaces 34 for connecting the pipe outside the counter to the internal pipe 32 are provided.

  As shown in FIGS. 2 and 3, each pipe connection space 34 is opened to the outside, so that these pipe connection spaces 34 are not filled with a filler.

  As shown in FIGS. 4 and 5, the pipe mounting space 24 and the pipe placement space 26 are formed in as small a space as possible within a range in which the pipe 32 can be placed. On the other hand, the pipe connection space 34 opened to the outside has a sufficient work space.

  FIG. 6 shows a counterweight mounting structure, and since a pair of counterweight mounting bases 35 protrude from the rear part of the swing frame 13f of the upper swing body 13, these counterweight mounting bases 35 are paired with a pair of mounting recesses. 23, the bolt 36 inserted from below the counterweight mounting base 35 is screwed into the middle slab member 27 through the mounting recess 23, and the counterweight 17 is inserted into the rear part of the upper swing body 13. Mount.

  Next, the function and effect of this embodiment will be described.

  The locator 31 is pre-installed in advance, and the pipe 32 for connecting the heat exchanger or hydraulic equipment is pre-installed in the locator 31, and the pipe 32 positioned by the locator 31 directly adds the large weight of the packing. A series of spaces 24, 26, and 24 are formed with slab materials 25, 27, and 28 so that they are not received. At this time, a series of spaces 24, 26, and 24 surrounded by the slab materials 25, 27, and 28 are made of concrete. Then, the space is closed by filling with a filler (not shown) such as iron powder.

  In other words, the filler is filled around the pipe 32, but the filler added to the pipe 32 by surrounding the pipe 32 with the filler weight blocker 22 composed of slab materials 25, 27, and 28 of thick plates. So that excessive load due to the weight of a large amount of filler (not shown) further filled in the outer shell 21 on the filler weight blocker 22 is not applied to the pipe 32. To do.

  By installing the pipe 32 in advance, the series of spaces 24, 26, 24 surrounded by the slab materials 25, 27, 28 around the pipe 32 can be minimized, and the pipe 32 is formed into a complicated shape by bending. As a result, an arbitrary oil passage or the like can be easily formed in the can weight.

  Since the pipe 32 is disposed in a series of spaces 24, 26, 24 surrounded by the filler weight blocker 22, the weight of the filler can be prevented from acting on the pipe 32, and the pipe 32 can be deformed. Can be prevented. That is, since the pipe 32 is covered with thick slab members 25, 27, and 28, the weight of the filler is not directly received, and the pipe 32 is disposed even when the pipe 32 is installed in the lower portion of the counterweight 17. The space 26 is not crushed by the tonnage of the packing.

  The locator 31 can easily position the pipe 32 in the filling weight blocker 22, and in particular, in the series of spaces 24, 26, 24 surrounded by the filler weight blocker 22 by the piping pre-installation by the locator 31. Piping positioning before filling can be done easily.

  The piping 32 can be positioned by the filler filled in the series of spaces 24, 26, and 24 surrounded by the filler weight blocker 22, and the wasteful filling space can be utilized.

  In other words, it is possible to inject filling material into a series of spaces 24, 26, 24 around the piping 32, and the injected material has a piping fixing function and a piping protection function. In addition, since a filling guard can be injected around the pipe 32, the surplus space can be used to the maximum and the weight of the counterweight 17 can be easily secured.

  In particular, when a waterproof filler is filled around the pipe 32, it is possible to prevent water leakage and oil leakage due to cracks in the pipe 32 and the like.

  Since the pipe 32 is disposed in a series of spaces 24, 26, 24 surrounded by the slab members 25, 27, 28, the filling on the filler weight blocker 22 is performed according to the strength of the slab members 25, 27, 28. The weight of the object can be reliably prevented from acting on the pipe 32, and the slab members 25, 27 and 28 themselves can function effectively as the weight of the counterweight 17.

  The pipe 32 attached in the pipe installation space 24 of the lower slab material 25 is arranged in the pipe installation space 26 of the middle slab material 27 so as to bypass the installation recess 23, and the upper side of the pipe 32 is applied. Thus, it is possible to provide a pipe durability structure suitable for the counterweight 17 having the mounting recess 23 in the lower part.

  In addition, a recess is provided in the outer shell body 21 of the counterweight 17, and a counterweight attachment / detachment device (attachment called a counterweight removal device) for attaching / detaching the counterweight 17 to / from the upper swing body 13 in the recess, a fuel tank Alternatively, a battery or an accumulator may be fitted. In this case, it is preferable to form a series of spaces 24, 26, 24 surrounded by the filler weight blocker 22 so as to avoid the recess.

  The present invention is applicable to a swivel type work machine, a crane truck, and the like.

It is a perspective sectional view showing one embodiment of a counterweight according to the present invention. It is a top view of a counterweight same as the above. It is a front view of a counterweight same as the above. It is sectional drawing of the IV-IV line of FIG. It is sectional drawing of the VV line of FIG. It is sectional drawing of the VI-VI line of FIG. It is a side view of the working machine carrying a counterweight same as the above.

Explanation of symbols

21 outer shell
22 Filler weight blocker
23 Mounting recess
24 Piping installation space
25 Lower slab material
26 Piping installation space
27 Middle slab material
28 Upper slab material
31 Locator as positioning plate
32 Piping

Claims (5)

The outer shell,
A filler weight blocker that forms a space in the outer shell body that is surrounded by a member that does not deform even if it receives the weight of the filler filled in the outer shell body, and can block the weight of the filler;
And a pipe disposed in a space surrounded by a filler weight blocker. The counterweight according to claim 1, further comprising a positioning plate for positioning both ends of the pipe. The counterweight according to claim 1 or 2, wherein the space surrounded by the filler weight blocker is filled with a filler. The counterweight according to any one of claims 1 to 3, wherein the filling weight blocker is made of a slab material. Filler weight blocker is
A lower slab material having a plurality of pipe mounting spaces arranged through mounting recesses opened in the lower part;
A middle slab material having a pipe arrangement space arranged on the upper side of the lower slab material;
The counterweight according to claim 4, further comprising: an upper slab material disposed on an upper side of the middle slab material and closing a piping arrangement space.

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