WO2020196221A1 - カウンタウエイト及び作業機 - Google Patents

カウンタウエイト及び作業機 Download PDF

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Publication number
WO2020196221A1
WO2020196221A1 PCT/JP2020/012195 JP2020012195W WO2020196221A1 WO 2020196221 A1 WO2020196221 A1 WO 2020196221A1 JP 2020012195 W JP2020012195 W JP 2020012195W WO 2020196221 A1 WO2020196221 A1 WO 2020196221A1
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WO
WIPO (PCT)
Prior art keywords
counterweight
weight
work machine
case
machine
Prior art date
Application number
PCT/JP2020/012195
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English (en)
French (fr)
Japanese (ja)
Inventor
健治 生宗
本多　亮
Original Assignee
株式会社タダノ
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 株式会社タダノ filed Critical 株式会社タダノ
Priority to CN202080021676.2A priority Critical patent/CN113574226B/zh
Priority to JP2021509290A priority patent/JP7375811B2/ja
Publication of WO2020196221A1 publication Critical patent/WO2020196221A1/ja

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
    • B66C23/62—Constructional features or details
    • B66C23/72—Counterweights or supports for balancing lifting couples
    • B66C23/74—Counterweights or supports for balancing lifting couples separate from jib
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/18—Counterweights

Definitions

  • the present invention relates to a counterweight and a working machine.
  • the filler can be taken in and out of the counterweight, and the weight of the counterweight can be changed by changing the amount and / or the material of the filler according to the state of the working machine.
  • the work capacity of the work machine differs depending on the model.
  • the weight of the counterweight differs depending on the model of the working machine on which the counterweight is mounted.
  • the size of the counterweight case depends on the size of the work machine on which the counterweight is mounted and / or the capacity of the filler filled in the counterweight case. It is set accordingly.
  • the width dimension of the counterweight case is set according to the width dimension of the swivel table of the working machine.
  • the dimensions other than the dimensions in the width direction of the counterweight case are set according to the volume of the filler filled in the counterweight case.
  • An object of the present invention is to provide a counterweight capable of suppressing costs in a counterweight mounted on a plurality of models.
  • a counterweight fixed to the work machine A common case for work machines of different models and A weight-side fixing mechanism for fixing the counterweight to the work machine, which is provided in the case and is standardized for work machines of different models, The filler filled in the case and the filler so that the weight of the counterweight is the weight set for each model. To be equipped.
  • one aspect of the working machine according to the present invention is A work machine that can be equipped with a counterweight A weight support that supports the counterweight and A work machine side fixing mechanism for fixing the counter weight to the weight support part, A work machine side engaging portion having a shape set for each work machine model is provided.
  • the work machine side fixing mechanism is When the engagement between the work machine side engaging portion and the weight side engaging portion provided on the counter weight is appropriate, the counter weight can be directly or indirectly connected to the weight support portion. If the engagement is improper, it will not be possible to connect to the counterweight.
  • FIG. 1 is a side view of a crane vehicle CC equipped with the counterweight 10 of the embodiment.
  • FIG. 2 is an explanatory diagram showing an assembly location of the counterweight 10 in the crane vehicle CC.
  • FIG. 3 is a perspective view of the counterweight 10.
  • FIG. 4 is a plan view of the counterweight 10.
  • FIG. 5 is a perspective view showing a joint portion of the counterweight 10.
  • FIG. 6A is a perspective view showing a weight-side abutting portion 71 of the erroneous assembly prevention structure 70 of the heavy counterweight 10 (a).
  • FIG. 6B is a perspective view showing a weight-side abutting portion 71 of the erroneous assembly prevention structure 70 of the light counterweight 10 (b).
  • FIG. 7A is a perspective view showing a swivel side abutting portion 72 of the erroneous assembly prevention structure 70 in the counterweight support portion 31 (a) of the crane vehicle CC having a high working capacity.
  • FIG. 7B is a perspective view showing a swivel side abutting portion 72 of the erroneous assembly prevention structure 70 in the counterweight support portion 31 (b) of the crane vehicle CC having a low working capacity.
  • FIG. 8A is an explanatory view of the operation when the heavy counterweight 10 (a) is assembled to the counterweight support portion 31 (a) of the compatible model.
  • FIG. 8B is an explanatory view of the operation when the heavy counterweight 10 (a) is assembled to the counterweight support portion 31 (b) of the non-conforming model.
  • FIG. 9A is an explanatory view of the operation when the light counterweight 10 (b) is assembled to the counterweight support portion 31 (b) of the compatible model.
  • FIG. 9B is an explanatory view of the operation when the light counterweight 10 (b) is assembled to the counterweight support portion 31 (a) of the non-conforming model.
  • the crane vehicle CC includes a traveling body 20, a swivel base 30, a boom 40, and an outrigger 50.
  • the traveling body 20 is a vehicle body of a self-propellable vehicle provided with wheels 21.
  • the swivel base 30 is provided on the traveling body 20 so as to be able to swivel 360 degrees in the horizontal direction.
  • the boom 40 is provided on the swivel base 30 so as to be undulating and expandable.
  • the undulation of the boom 40 is executed by the expansion and contraction of the undulation cylinder 41 provided between the boom 40 and the swivel base 30. Further, the expansion and contraction of the boom 40 is executed by expansion and contraction of an expansion / contraction cylinder (not shown) provided inside the boom 40.
  • the boom 40 is in a laid-down state shortened to the minimum length, and is in a retracted posture (a posture when the traveling body 20 travels) with its tip facing forward of the traveling body 20.
  • the boom 40 turns as the swivel table 30 turns.
  • the operator of the work machine (hereinafter, simply referred to as "operator") performs the work by turning the boom 40 (swivel table 30) and extending and / or standing the boom 40 from the retracted posture.
  • the arrow FR indicates the front of the crane vehicle CC
  • the arrow RR indicates the rear of the crane vehicle CC
  • the arrow L indicates the left direction of the crane vehicle CC
  • the arrow R (FIG. 2). (See) indicates the right direction of the crane car CC.
  • the left-right direction in the crane car CC means the left-right direction when the crane car CC is viewed from the rear side.
  • the width direction means the vehicle width direction (left-right direction) of the crane vehicle CC.
  • a pair of left and right out triggers 50 are provided in the front and rear of the traveling body 20. The operator grounds the four out-triggers 50 to stabilize the posture of the traveling body 20 during work.
  • the counterweight 10 is provided at the rear of the swivel table 30 in order to increase the working capacity (lifting capacity) of the boom 40.
  • the counterweight 10 is removable from the swivel base 30.
  • a counterweight support portion 31 is provided at the rear portion of the swivel base 30 at a height spaced above the traveling body 20.
  • the counterweight support portion 31 projects rearward from the rear portion of the swivel base 30.
  • the counterweight support portion 31 corresponds to an example of the weight support portion. As shown in FIG. 2, the counterweight support portion 31 has a main body 311, upper arm portions 312a and 312b, and lower arm portions 313a and 313b.
  • the main body 311 has a rectangular frame shape and extends in the front-rear direction.
  • the main body 311 has a first side surface (left side surface) in the width direction and a second side surface (right side surface) in the width direction.
  • the upper arm portion 312a is provided at the upper end portion of the left side surface of the main body 311.
  • the upper arm portion 312a extends from the left side surface of the main body 311 to the left side.
  • the upper arm portion 312b is provided at the upper end portion of the right side surface of the main body 311.
  • the upper arm portion 312b extends from the right side surface of the main body 311 to the right side.
  • the lower arm portion 313a is provided at the lower end portion of the left side surface of the main body 311.
  • the lower arm portion 313a extends from the left side surface of the main body 311 to the left side.
  • the tip (left end) of the lower arm 313a is closer to the main body 311 than the tip (left end) of the upper arm 312a.
  • the lower arm portion 313b is provided at the lower end portion of the right side surface of the main body 311.
  • the lower arm portion 313b extends from the right side surface of the main body 311 to the right side.
  • the tip (right end) of the lower arm 313b is closer to the main body 311 than the tip (right end) of the upper arm 312b.
  • the upper arm portions 312a and 312b have support portion side connecting portions 314a and 314b that can be connected to the detachable cylinders 14a and 14b described later, respectively.
  • the upper ends of the detachable cylinders 14a and 14b are connected to the support side connecting portions 314a and 314b, respectively, in the connected state of the counterweight 10.
  • the lower arm portions 313a and 313b each have a second coupling hole 62.
  • the second coupling hole 62 penetrates the lower arm portions 313a and 313b in the front-rear direction.
  • the second coupling hole 62 corresponds to an example of the working machine side fixing mechanism, the working machine side fixing portion, and the working machine side through hole, and constitutes the coupling mechanism 60 described later.
  • the second coupling hole 62 of the lower arm portion 313a is closer to the main body 311 than the support portion side connecting portion 314a of the upper arm portion 312a in the width direction. Further, the second coupling hole 62 of the lower arm portion 313b is closer to the main body 311 in the width direction than the support portion side connecting portion 314b of the upper arm portion 312b.
  • the counterweight 10 is coupled (removably fixed) to the counterweight support portion 31 by the detachable cylinders 14a and 14b and the coupling mechanism 60 described later.
  • the state in which the counterweight 10 is coupled to the counterweight support portion 31 is referred to as a coupled state of the counterweight 10.
  • the counterweight 10 corresponds to an example of a case, and has a counterweight case 13.
  • the counterweight case 13 is composed of a plurality of combined box-shaped members.
  • the counterweight case 13 may be a single box-shaped member.
  • the counterweight case 13 has an accommodating portion 131.
  • the counterweight case 13 has a plurality of accommodating portions 131a to 131g.
  • the filler 8 is filled in the plurality of accommodating portions 131a to 131g.
  • the accommodating portion 131a is provided in the central portion of the counterweight case 13 in the width direction.
  • the accommodating portion 131b and the accommodating portion 131c are provided adjacent to the left side of the accommodating portion 131a in the width direction.
  • the accommodating portion 131b is provided on the rear side of the accommodating portion 131c.
  • the accommodating portion 131d and the accommodating portion 131e are provided adjacent to the right side of the accommodating portion 131a in the width direction.
  • the accommodating portion 131d is provided on the rear side of the accommodating portion 131e.
  • the accommodating portion 131f is provided adjacent to the accommodating portion 131b and the left side of the accommodating portion 131b in the width direction. Further, the accommodating portion 131g is provided adjacent to the accommodating portion 131d and the right side of the accommodating portion 131e in the width direction.
  • Such a counterweight case 13 is standardized for work machines of different models.
  • the model to be shared by the counterweight case 13 may be at least two types of models. However, from the viewpoint of cost reduction, it is preferable that there are many models for which the counterweight case 13 is standardized.
  • a group including a plurality of models related to work machines is referred to as a target model group.
  • the specification information (for example, dimensions and shape) of the swivel table to which the counterweight is connected is the same in the models of the work machines included in the target model group. The reason for this is that if the specification information of the swivel table is the same, it is possible to use a common counterweight (for example, a counterweight having a counterweight case having the same shape).
  • One target model group is composed of, for example, models of work machines of the same manufacturer. Further, one target model group is composed of, for example, models of working machines of the same series from the same manufacturer.
  • the counterweight case 13 has, for example, standardized specifications (in other words, specification information) for the work machine models (at least two types of models) included in one target model group. It is a thing.
  • Such accommodating portions 131a to 131g are filled with fillers having different specific gravities.
  • the accommodating portion 131a is filled with a first filler having a first specific gravity.
  • the accommodating portions 131b to 131g are filled with a second filler having a second specific gravity.
  • the specific gravities of the fillers filled in the accommodating portions 131b to 131 g may be different from each other.
  • the specific gravities of the fillers filled in the accommodating portions 131a to 131g do not have to be different at all. Further, the specific gravities of the fillers filled in the accommodating portions 131a to 131g may be the same.
  • the weight of the counterweight 10 can be appropriately adjusted even when the counterweight case 13 having the same specifications is used. That is, it is possible to realize a plurality of types of counterweights 10 having the same specifications as the counterweight case 13 and having different weights.
  • the counterweight case 13 has a base weight portion 11 and a side weight portion 12.
  • the base weight portion 11 has a box shape.
  • the base weight portion 11 has a first side surface (left side surface) which is one side surface in the width direction and a second side surface (right side surface) which is the other side surface in the width direction. Further, the base weight portion 11 has a third side surface (upper side surface) which is one side surface in the vertical direction.
  • the base weight portion 11 has the above-mentioned accommodating portions 131a to 131e.
  • the accommodating portions 131a to 131e are partitioned from each other. That is, the accommodating portions 131a to 131e do not communicate with each other.
  • the side weight portion 12 has a left weight portion 12a and a right weight portion 12b.
  • the left side weight portion 12a and the right side weight portion 12b each have a first side surface (left side surface) which is one side surface in the width direction and a second side surface (right side surface) which is the other side surface in the width direction.
  • the left weight portion 12a has a box shape having the above-mentioned 131f.
  • the right side surface of the left side weight portion 12a is fixed to the left side surface of the base weight portion 11 by welding or fixing means such as fastening parts (for example, bolts and nuts).
  • the accommodating portion 131f does not communicate with the base weight portions 11 131a to 131e.
  • the right weight portion 12b has a box shape having the above-mentioned accommodating portion 131 g.
  • the left side surface of the right side weight portion 12b is fixed to the right side surface of the base weight portion 11 by welding or fixing means such as fastening parts (for example, bolts and nuts).
  • the accommodating portion 131g does not communicate with the accommodating portions 131a to 131e of the base weight portion 11.
  • the upper side surface of the left weight portion 12a and the upper side surface of the right side weight portion 12b are located on the same plane.
  • the upper side surface of the left side weight portion 12a and the upper side surface of the right side weight portion 12b are located above the upper side surface of the base weight portion 11.
  • Such a counterweight 10 has a concave shape when the counterweight 10 is viewed from the rear, surrounding the lower surface of the counterweight support portion 31 and both side surfaces (left side surface and right side surface) in the width direction.
  • the accommodating portions 131a to 131 g of the counterweight case 13 are filled with heavy objects such as iron ore, iron sand, iron scraps, or ready-mixed concrete, or heavy objects obtained by appropriately combining these heavy objects as a filler. There is.
  • the counterweight 10 has removable cylinders 14a and 14b.
  • the detachable cylinders 14a and 14b are for supporting the counterweight 10 on the counterweight support portion 31.
  • the detachable cylinders 14a and 14b can be expanded and contracted in the vertical direction.
  • the counterweight 10 has a detachable cylinder 14a on the right side and a detachable cylinder 14b on the left side.
  • the detachable cylinders 14a and 14b are provided at two positions separated in the left-right direction on the upper side surface of the base weight portion 11. Such detachable cylinders 14a and 14b have common specifications (in other words, specification information) for the work machine models (at least two types of models) included in one target model group.
  • the counterweight case 13 and the removable cylinders 14a and 14b are common to the same target model group.
  • the operator When assembling the counterweight 10 to the counterweight support portion 31, the operator first places the counterweight 10 on the front portion of the traveling body 20. Next, the operator rotates the swivel base 30 to arrange the counterweight support portion 31 above the counterweight 10.
  • the operator extends the detachable cylinders 14a and 14b and engages the upper end portions thereof with the upper arm portions 312a and 312b.
  • the operator raises the counterweight 10 to the coupling position shown in FIG. 2 by contracting the detachable cylinders 14a and 14b.
  • the operator can lower the counterweight 10 arranged at the coupling position shown in FIG. 2 by extending the detachable cylinders 14a and 14b.
  • the counterweight 10 has support brackets 15a and 15b.
  • the support brackets 15a and 15b are provided on the upper side surface of the base weight portion 11.
  • the counterweight 10 has a support bracket 15a on the left side and a support bracket 15b on the right side.
  • the support brackets 15a and 15b are provided at two positions separated in the left-right direction on the upper side surface of the base weight portion 11.
  • the support brackets 15a and 15b each have two plate members 151 and 152 facing each other in the front-rear direction.
  • the plate member 151 is provided on the front side of the plate member 152.
  • the plate members 151 and 152 have a substantially L-shaped plate shape, respectively.
  • Such support brackets 15a and 15b have standard specifications (in other words, specification information) for the work machine models (at least two types of models) included in one target model group.
  • the counterweight case 13, the detachable cylinders 14a and 14b, and the detachable cylinders 14a and 14b are common to the same target model group.
  • the lower ends of the detachable cylinders 14a and 14b are supported by the support brackets 15a and 15b. Specifically, the lower end of the left detachable cylinder 14a is supported by the left support bracket 15a. The lower end of the detachable cylinder 14b on the right side is supported by the support bracket 15b on the right side.
  • the plate members 151 and 152 have a first half portion (inner half portion) which is an inner half portion in the width direction and a second half portion (outer half portion) which is an outer half portion in the width direction.
  • the inside in the width direction means a side closer to the center in the vehicle width direction of the crane vehicle CC with reference to the plate members 151 and 152.
  • the outside in the width direction means the side far from the center in the vehicle width direction of the crane vehicle CC with reference to the plate members 151 and 152.
  • the upper end of the inner half of the plate members 151 and 152 is located below the upper end of the outer half of the plate members 151 and 152.
  • the inner halves of the plate members 151 and 152 each have a first coupling hole 61.
  • the first coupling holes 61 penetrate the plate members 151 and 152 in the front-rear direction, respectively.
  • the first coupling hole 61 corresponds to an example of a weight side fixing mechanism, a weight side fixing portion, and a weight side through hole.
  • the outer half of the plate members 151 and 152 has a cylinder fixing portion 153, which is a portion to which the detachable cylinders 14a and 14b are fixed.
  • the cylinder fixing portion 153 is composed of through holes penetrating the outer half portions of the plate members 151 and 152 in the front-rear direction.
  • the detachable cylinders 14a and 14b are fixed to the outer halves (that is, the support brackets 15a and 15b) of the plate members 151 and 152 via the pins 154 inserted into the cylinder fixing portion 153.
  • the counterweight 10 located at the coupling position is coupled to the counterweight support portion 31 by the coupling mechanism 60.
  • specifications in other words, specification information
  • the counterweight case 13, the detachable cylinders 14a and 14b, the detachable cylinders 14a and 14b, and the coupling mechanism 60 are common to the same target model group.
  • the coupling mechanism 60 will be described.
  • the coupling mechanism 60 is for coupling the counterweight 10 located at the coupling position and the counterweight support portion 31.
  • the coupling mechanism 60 can take a coupling state in which the counterweight 10 and the counterweight support portion 31 are coupled, and a coupling release state in which the coupling between the counterweight 10 and the counterweight support portion 31 is released.
  • the coupling mechanism 60 includes a first coupling hole 61 (see FIG. 3) provided in the counterweight 10 and a second coupling hole 62 (see FIG. 7A) provided in the counterweight support portion 31 of the swivel table 30. , A fixing pin 63 that is fastened to the counterweight support portion 31 in a state of being inserted into the first coupling hole 61 and the second coupling hole 62.
  • the fixing pin 63 corresponds to an example of a shaft member.
  • the first coupling hole 61 corresponds to an example of the weight side fixing mechanism. As shown in FIGS. 5 and 6A, the first coupling hole 61 is provided in the plate members 151 and 152 of the support brackets 15a and 15b that support the detachable cylinders 14a and 14b. The central axis of the first coupling hole 61 of the plate member 151 and the central axis of the first coupling hole 61 of the plate member 152 are located on the same straight line parallel to the front-rear direction.
  • the second coupling hole 62 is provided in the lower arm portions 313a and 313b of the counterweight support portion 31 in the swivel base 30. As shown in FIGS. 7A and 7B, the second coupling hole 62 penetrates the lower arm portions 313a and 313b in the front-rear direction.
  • the second coupling hole 62 has an elliptical shape that is larger in the left-right direction and the vertical direction and longer in the left-right direction than the first coupling hole 61.
  • the second coupling hole 62 is arranged at a position coaxial with the first coupling hole 61 of the counterweight 10 when the counterweight 10 suitable for the crane wheel CC is arranged at the coupling position. The arrangement relationship between the first bond hole 61 and the second bond hole 62 will be described later.
  • the fixing pin 63 is fastened to the counterweight support portion 31 in a state of being inserted into the first coupling hole 61 and the second coupling hole 62 to fix the counterweight 10 to the counterweight support portion 31.
  • the weight of the counterweight 10 will be described below.
  • the weight of the counterweight 10 is set according to the working capacity (lifting capacity) of the crane vehicle CC.
  • the model of the crane vehicle CC a model having a relatively high working capacity (lifting capacity) (hereinafter referred to as the first model) and a model having a relatively low working capacity (hereinafter referred to as the second model). It is called a model.) And is set.
  • the traveling body 20 and the swivel table 30 have the same specifications (in other words, the specification information is the same). Therefore, the cost can be reduced as compared with the case where the traveling body 20 and the swivel base 30 are designed for each working capacity (model) of the crane vehicle CC.
  • the counterweight 10 also has two types of counterweights having different weights according to the working capacity of each model of the crane vehicle CC, that is, relatively heavy counterweights (also referred to as first counterweights). And a relatively light counterweight (also referred to as a second counterweight) are set.
  • the first counterweight will be referred to as a counterweight 10 (a)
  • the second counterweight will be referred to as a counterweight 10 (b).
  • the counterweight support portion to which the counterweight 10 (a) can be fixed is referred to as a counterweight support portion 31 (a).
  • the counterweight support portion to which the counterweight 10 (b) can be fixed is referred to as a counterweight support portion 31 (b).
  • the first model and the second model of the crane car CC have a common swivel base 30.
  • the counterweight case 13 is also shared. By sharing the counterweight case 13 in this way, it is possible to reduce the cost as compared with the case where different counterweight cases are used.
  • the counterweight 10 (a) and the counterweight 10 (b) use a common counterweight case 13 (in other words, the same specification information), but have different weights.
  • the specific gravity of the filler is different.
  • the weight of the counterweight can be made different without significantly changing the volume of the filler to be filled in the counterweight case 13.
  • the counterweight 10 (a) is filled with a filler having a specific gravity of about 5
  • the counterweight 10 (b) is filled with a filler having a specific gravity of about 4.
  • the specific gravity for example, the mixing ratio of a filler such as iron or steel having a specific gravity larger than 4 or 5 and a filler such as concrete, soil or sand having a specific gravity smaller than 4 or 5 is mixed. It may be done by adjusting. Alternatively, the weight of the counterweight may be adjusted by making the material of the filler used different.
  • the number of models due to the difference in the working capacity of the crane vehicle CC and the number of types of counterweights 10 according to the difference are not limited to two types, and a plurality of types of three or more can be set. ..
  • the counterweight case 13 when the counterweight case 13 is shared as described above, it is difficult to distinguish the counterweight 10 (a) and the counterweight 10 (b) in appearance. Therefore, there is a possibility that the counterweight may be erroneously assembled to the swivel base 30 (counterweight support portions 31 (a), 31 (b)) of the crane vehicle CC other than the proper model.
  • an erroneous assembly prevention structure 70 is provided between the counterweight 10 and the counterweight support portion 31.
  • the misassembly prevention structure 70 will be described with reference to FIGS. 6A, 6B, 7A, and 7B.
  • the erroneous assembly prevention structure 70 includes a weight-side abutting portion 71 (see FIGS. 6A and 6B) provided on the upper surface of the counterweight case 13 and a swivel-side abutting portion 71 provided on the lower surface of the counterweight support portion 31.
  • a unit 72 (see FIGS. 7A and 7B) is provided.
  • the weight side abutting portion 71 corresponds to an example of a weight side engaging portion. Further, the swivel side abutting portion 72 corresponds to an example of the working machine side engaging portion.
  • FIG. 6A shows a weight-side abutting portion 71 of a counterweight 10 (a) for mounting on a crane vehicle CC of a model (first model) having a high working capacity.
  • FIG. 6B shows a weight-side abutting portion 71 of a counterweight 10 (b) for mounting on a crane vehicle CC of a model (second model) having a low working capacity.
  • the weight of the counterweight 10 (b) is lighter than the weight of the counterweight 10 (a).
  • the counterweight case 13 of the counterweight 10 (b) and the counterweight case 13 of the counterweight 10 (b) have the same specifications (in other words, they have the same specification information).
  • FIG. 7A shows a swivel side abutting portion 72 of the counterweight support portion 31 (a) provided in the crane vehicle CC having a high working capacity.
  • FIG. 7B shows a swivel side abutting portion 72 of the counterweight support portion 31 (b) provided on the swivel base 30 of the crane car CC having a low working capacity.
  • the weight-side abutting portions 71 of the counterweights 10 (a) and 10 (b) include a first pedestal 71a and a second pedestal 71b, as shown in FIGS. 6A and 6B.
  • the first pedestal 71a and the second pedestal 71b are provided inside the support brackets 15a and 15b in the width direction on the upper surface of the counterweight case 13.
  • the first pedestal 71a and the second pedestal 71b are provided at a predetermined interval in the width direction. In the case of the present embodiment, the first pedestal 71a is provided outside the second pedestal 71b in the width direction. In the counterweight 10 (a) and the counterweight 10 (b), the first pedestal 71a and the second pedestal 71b have the same structure. Further, in the counterweight 10 (a) and the counterweight 10 (b), the first pedestal 71a and the second pedestal 71b are arranged at the same position.
  • a substantially rectangular parallelepiped abutting member 71c is firmly fixed to the upper surface of the first pedestal 71a by fastening parts such as bolts.
  • the upper surface of the abutting member 71c is located above the upper surface of the second pedestal 71b.
  • the upper surface of the abutting member 71c corresponds to an example of the abutting surface on the weight side.
  • the abutting member 71c is firmly fixed to the upper surface of the second pedestal 71b by fastening parts such as bolts.
  • the upper surface of the abutting member 71c is located above the upper surface of the first pedestal 71a.
  • the swivel side abutting portion 72 of the counterweight support portions 31 (a) and 31 (b) includes a first pedestal 72a and a second pedestal 72b as shown in FIGS. 7A and 7B.
  • the first pedestal 72a and the second pedestal 72b are the lower surfaces of the counterweight support portion 31, and when the counterweights 10 (a) and 10 (b) are mounted, the first pedestal 71a of the weight side abutting portion 71 And the second pedestal 71b are arranged at positions facing each other in the vertical direction.
  • a substantially rectangular parallelepiped abutting member 72c is attached to the lower surface of the second pedestal 72b by fastening parts such as bolts. It is firmly fixed.
  • the lower surface of the abutting member 72c is located below the lower surface of the first pedestal 72a.
  • the lower surface of the abutting member 72c corresponds to an example of the abutting surface on the working machine side.
  • the vertical dimension of the abutting member 72c is formed to be larger than the vertical dimension of the abutting member 71c of the counterweight case 13.
  • the abutting member 72c is firmly fixed to the upper surface of the first pedestal 72a by fastening parts such as bolts. ing.
  • the lower surface of the abutting member 72c is located below the lower surface of the second pedestal 72b.
  • the abutting member 71c of the weight side abutting portion 71 of the counterweights 10 (a) and 10 (b) is the first pedestal 72a of the swivel side abutting portion 72. And when it comes into direct contact with the lower surface of the second pedestal 72b, the counterweights 10 (a) and 10 (b) can be arranged at the coupling position. In other words, the counterweights 10 (a) and 10 (b) can be arranged at the coupling position when the weight-side abutting portion 71 and the swivel-side abutting portion 72 are engaged in an appropriate state.
  • the counterweights 10 (a) and 10 (B) cannot be raised to the coupling position.
  • the counterweights 10 (a) and 10 (b) cannot be arranged at the coupling position.
  • FIG. 8A describes a case where the counterweight 10 (a) is mounted on the counterweight support portion 31 (a) of the swivel base 30 of the crane vehicle CC, which is a compatible model and has a high working capacity.
  • the abutting member 71c of the counterweight 10 (a) becomes as shown in the figure.
  • the weight-side abutting portion 71 and the swivel-side abutting portion 72 are engaged in an appropriate state.
  • the position of the counterweight 10 (a) at this time is the coupling position, and as shown in the drawing, the second coupling hole 62 provided in the counterweight 10 (a) and the counterweight support portion 31 (a)
  • the first coupling hole 61 provided is coaxially arranged. Therefore, the fixing pin 63 can be inserted into the first coupling hole 61 and the second coupling hole 62. As a result, the counterweight support portion 31 (a) and the counterweight 10 (a) can be coupled by the fixing pin 63.
  • the first coupling hole 61 and the second coupling hole 62 form a fixing pin 63. It is ready for insertion. That is, the first coupling hole 61 and the second coupling hole 62 are in a state in which the counterweight 10 can be directly or indirectly connected to the counterweight support portion 31 (a).
  • FIG. 8B describes a case where the counterweight 10 (a) is erroneously mounted on the counterweight support portion 31 (b) of the swivel base 30 of the crane car CC, which is a non-conforming model and has a low working capacity.
  • the abutting member 71c of the counterweight 10 (a) becomes the third of the counterweight support portion 31 (b). It comes into contact with the abutting member 72c provided on the pedestal 72a.
  • the weight-side abutting portion 71 and the swivel-side abutting portion 72 engage in an inappropriate state.
  • the counterweight 10 (a) cannot be raised to the coupling position, and the second coupling hole 62 provided in the counterweight 10 (a) and the first coupling provided in the counterweight support portion 31 (b).
  • the position with the hole 61 is displaced. Therefore, the fixing pin 63 cannot be inserted into the first coupling hole 61 and the second coupling hole 62.
  • FIG. 9A describes a case where the counterweight 10 (b) is assembled to the counterweight support portion 31 (b) of the swivel base 30 of the crane vehicle CC, which is a compatible model and has a relatively low working capacity.
  • the abutting member 71c of the counterweight 10 (b) supports the counterweight as shown in the figure. It comes into contact with the second pedestal 72b of the portion 31 (b). In other words, the weight side abutting portion 71 and the swivel side abutting portion 72 are engaged in an appropriate state.
  • the position of the counterweight 10 (b) at this time is the coupling position, and the second coupling hole 62 provided in the counterweight 10 (b) and the first coupling hole 62 provided in the counterweight support portion 31 (b).
  • the holes 61 are arranged coaxially. Therefore, the fixing pin 63 can be inserted into the first coupling hole 61 and the second coupling hole 62. As a result, the counterweight support portion 31 (b) and the counterweight 10 (b) can be coupled by the fixing pin 63.
  • FIG. 9B describes a case where the counterweight 10 (b) is erroneously assembled to the counterweight support portion 31 (a) of the swivel base 30 of the crane car CC having a high working capacity, which is a non-conforming model.
  • the abutting member 71c of the counterweight 10 (b) comes into contact with the abutting member 72c provided on the second pedestal 72b of the counterweight support portion 31 (a).
  • the weight-side abutting portion 71 and the swivel-side abutting portion 72 engage in an inappropriate state.
  • the counterweight 10 (b) cannot be raised to the coupling position, and the second coupling hole 62 provided in the counterweight 10 (b) and the first coupling provided in the counterweight support portion 31 (a).
  • the position with the hole 61 is displaced. Therefore, the fixing pin 63 cannot be inserted into the first coupling hole 61 and the second coupling hole 62.
  • the counterweight 10 (b) cannot be assembled to the counterweight support portion 31 (a) of the non-conforming model, and erroneous assembly can be prevented.
  • the counterweight 10 of the present embodiment is a counterweight 10 including a counterweight case 13 mounted on the crane car CC and a filler filled in the counterweight case 13.
  • the counterweight case 13 is formed so as to be mounted on a plurality of models of crane car CCs having different specifications, and the filling material is different from at least one of the filling amount and the material of the crane car CC model.
  • a plurality of types of weights are set according to the difference. Therefore, when the counterweights 10 (a) and 10 (b) having different weights are formed, the counterweight case 13 can be shared, so that the cost can be reduced.
  • the counterweight case 13 is common and the counterweights having different weights are realized. That is, even if the amount of the filler to be filled in the counterweight case 13 is the same, the weight of the counterweight can be different. Therefore, even when the counterweight case 13 is filled with the filler without any gap, the weight of the counterweight can be made different. In this way, since the gap between the accommodating portions of the counterweight case 13 can be reduced, it is possible to prevent the filler from moving in the accommodating portion during work. As a result, work stability is improved.
  • the erroneous assembly prevention structure 70 as described above is provided. Therefore, it is possible to prevent the counterweight from being erroneously assembled to the incompatible crane car CC.
  • the erroneous assembly prevention structure 70 simply prevents erroneous assembly of the counterweight 10 and the counterweight support portion 31 by the coupling mechanism 60 by a mechanical structure. Therefore, it is possible to prevent human error from occurring. Further, according to the erroneous assembly prevention structure 70 of the present embodiment, the number of parts can be suppressed and the cost can be reduced.
  • the specific configuration of the counterweight and the working machine according to the present invention is not limited to the above-described embodiment, and the design may be changed or the design may be changed as long as the gist of the present invention is not deviated. Additions etc. are allowed.
  • the crane car CC is shown as a working machine equipped with the counterweight 10, but the working machine is not limited to the crane car CC.
  • the present invention is applied to, for example, a vehicle equipped with a boom such as an aerial work platform and a ladder vehicle, a construction machine such as a hydraulic excavator and a wheel loader, and a general work machine having a counterweight such as an agricultural machine. Can be done.
  • the present invention is not limited to this, and the filling amount may be simply changed. ..
  • the counterweight case 13 may be provided with a partition wall or the like for restricting the movement of the filler in advance.
  • the coupling mechanism 60 the fixing pin 63 is inserted into the first coupling hole 61 and the second coupling hole 62 provided in the counterweight 10 and the swivel base 30, but the coupling mechanism 60 is shown. It is not limited to this of the mechanism.
  • the coupling mechanism for example, a mechanism for inserting and fastening a bolt provided on one side of the counterweight 10 and the swivel base 30 through a hole provided on the other side, or a mechanism for hooking a hook provided on one side to a pin on the other side.
  • the bonding mechanism may be a structure that can be bonded at a specific bonding position and cannot be bonded if it deviates from the bonding position.
  • the structure of the erroneous assembly prevention structure 70 is not limited to the case of the present embodiment.
  • the erroneous assembly prevention structure for example, a protrusion having a shape in which the pedestal and the abutting member are integrated may be assembled.
  • the relationship between the push-up member and the pedestal may be a pin and a hole.
  • the pin moves relative to the bottom of the hole and is placed at the coupling position, and in the case of a non-conforming model, the pin does not enter the hole and cannot move to the coupling position. May be good.
  • the counterweight case 13 can be shared by separating the pin from the counterweight case 13.
  • the present invention can be applied to various working machines.

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Component Parts Of Construction Machinery (AREA)
  • Jib Cranes (AREA)
PCT/JP2020/012195 2019-03-25 2020-03-19 カウンタウエイト及び作業機 WO2020196221A1 (ja)

Priority Applications (2)

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CN202080021676.2A CN113574226B (zh) 2019-03-25 2020-03-19 配重及作业机
JP2021509290A JP7375811B2 (ja) 2019-03-25 2020-03-19 カウンタウエイト及び作業機

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JP2019-056851 2019-03-25
JP2019056851 2019-03-25

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CN (1) CN113574226B (enrdf_load_stackoverflow)
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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0434290U (enrdf_load_stackoverflow) * 1990-07-20 1992-03-23
JPH0542353U (ja) * 1991-11-15 1993-06-08 株式会社小松製作所 建設車両のカウンタウエイト
JPH0649490U (ja) * 1992-12-17 1994-07-08 東洋運搬機株式会社 カウンタウエイト
JPH10128490A (ja) * 1996-10-21 1998-05-19 Toyota Autom Loom Works Ltd 産業車両用カウンタウエイトの製造方法
JP2001151470A (ja) * 1999-11-30 2001-06-05 Aichi Corp 作業車のカウンタウェイト
JP2009097283A (ja) * 2007-10-18 2009-05-07 Komatsu Ltd カウンタウェイト
JP2010006554A (ja) * 2008-06-27 2010-01-14 Hitachi Sumitomo Heavy Industries Construction Crane Co Ltd カウンタウエイト着脱装置およびトラッククレーン

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3862575B2 (ja) * 2001-09-28 2006-12-27 新キャタピラー三菱株式会社 カウンタウエイト及びそのリサイクル方法
US9702114B2 (en) * 2012-04-03 2017-07-11 Harnischfeger Technologies, Inc. Counterweight system for an industrial machine

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0434290U (enrdf_load_stackoverflow) * 1990-07-20 1992-03-23
JPH0542353U (ja) * 1991-11-15 1993-06-08 株式会社小松製作所 建設車両のカウンタウエイト
JPH0649490U (ja) * 1992-12-17 1994-07-08 東洋運搬機株式会社 カウンタウエイト
JPH10128490A (ja) * 1996-10-21 1998-05-19 Toyota Autom Loom Works Ltd 産業車両用カウンタウエイトの製造方法
JP2001151470A (ja) * 1999-11-30 2001-06-05 Aichi Corp 作業車のカウンタウェイト
JP2009097283A (ja) * 2007-10-18 2009-05-07 Komatsu Ltd カウンタウェイト
JP2010006554A (ja) * 2008-06-27 2010-01-14 Hitachi Sumitomo Heavy Industries Construction Crane Co Ltd カウンタウエイト着脱装置およびトラッククレーン

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JP7375811B2 (ja) 2023-11-08
CN113574226A (zh) 2021-10-29
CN113574226B (zh) 2023-01-06

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