JP2019014590A - Separation type counterweight - Google Patents

Abstract

To provide a separation type counterweight excellent in workability.SOLUTION: A separation type counterweight 100 comprises: a base weight 200 configured to be attachable to or detachable from a crane truck; and a separation type loading weight 300 placed on the base weight. The separation type loading weight comprises: a plurality of separation type center loading weights 310; and a plurality of separation type side loading weights 360 placed at sides of the separation type center loading weights. Each separation type side loading weight is configured so as to be stacked on another separation type side loading weight. Each separation type side loading weight is formed plane-symmetrical with respect to a vertical plane extending in forward and backward directions through the center thereof. Each separation type side loading weight comprises a coupling mechanism. The coupling mechanism provided on each separation type side loading weight can be coupled to the coupling mechanism provided on the other separation type side loading weight stacked thereon.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a split-type counterweight mounted on a swing body of a crane vehicle.

  In a crane vehicle, in order to improve workability and safety, a counterweight for balancing the weight is generally attached to the rear part of the revolving structure. As a kind of counterweight, there is known a divided counterweight in which a counterweight is configured by combining a plurality of divided weights.

  Patent Document 1 discloses one of such divided counterweights. In this split type counterweight, weights are stacked at the lower center of the rear part of the swivel of the crane truck, and desired split weights are stacked on the left and right according to the lifting performance of the crane truck. The divided weights have the same shape on the left and right, and can be used in common on the left and right.

  Patent Document 2 discloses another divided counterweight. This divided counterweight has a plurality of blocks of the same shape that are stacked one above the other. The block has a substantially rectangular parallelepiped shape, and can be connected to another block even when the block is rotated 180 °, and the block can be easily attached regardless of the orientation of the block. Each block has a fastening portion fastened by a fastener (for example, a bolt) that fastens the blocks. Thereby, the stacked blocks can be fastened by a fastener (bolt).

Japanese Patent No. 4947715 Japanese Patent No. 5167070

  In the divided counterweight disclosed in Patent Document 1, the divided weights arranged on the left and right have a shape that is rotationally symmetric on the left and right. For this reason, in order to balance the weight on the left and right, for example, when the left divided weight is moved to the right, it is necessary to rotate the divided weight by 180 °. This rotating operation needs to be performed while the divided weights are lifted or after the lifted divided weights are once lowered to the ground. Since the divided weight is very heavy, it is not only troublesome to rotate it while it is lifted up, but the divided weight may fluctuate. Moreover, it is not only time-consuming to rotate after being lowered to the ground, but also because it is heavy, it requires power to rotate. When attaching the divided weights stacked on the ground to the swivel of the crane vehicle, it is necessary to prepare for the ground by changing the direction of the left and right separately in consideration of the installation work.

  In the split type counterweight disclosed in Patent Document 2, a fastener is necessary to fasten the blocks, and a fastening tool is also necessary. Since the fastener is prepared as a separate part, it may be lost.

  Thus, it can be said that these divided counterweights are somewhat difficult in terms of workability.

  The present invention has been made in consideration of such a situation, and an object of the present invention is to provide a divided counterweight with excellent workability.

  The present invention is a split-type counterweight that is mounted on a swing body of a crane vehicle, and includes a base weight that is detachable from the swing body, and a split-type loading weight that is placed on the base weight. Has been. The split type stacking weight is composed of a plurality of split type center stacking weights and a plurality of split type side stacking weights placed on the side of the center stacking weight. Each of the divided type side loading weights is configured to be able to be stacked with another divided type side loading weight. Each of the split-type side loading weights is formed symmetrically with respect to a vertical plane including a straight line extending in the vertical direction through the center and a straight line extending in the front-rear direction through the center. Each divided type side loading weight is provided with a connecting mechanism. The connecting mechanism provided on each divided type side loading weight can be connected to the connecting mechanism provided on the other divided type side loading weights stacked on each other, and provided on the two divided type side loading weights stacked on each other. By connecting the connected connecting mechanisms to each other, the two divided side load weights stacked on each other are fixed to each other.

  ADVANTAGE OF THE INVENTION According to this invention, the division | segmentation type counterweight excellent in workability | operativity is provided.

FIG. 1 shows a mobile crane according to an embodiment. FIG. 2 is a front view of the divided counterweight shown in FIG. FIG. 3 is a plan view of the divided counterweight shown in FIG. FIG. 4 is a side view of the split counterweight shown in FIG. FIG. 5 is a perspective view of two divided side loading weights connected to each other. FIG. 6 shows the lower coupling mechanism in the coupled state with two split side loading weights. FIG. 7 shows the lower coupling mechanism in the retracted state with two split side load weights. FIG. 8A shows the lower coupling mechanism in the coupled state. FIG. 8B shows the lower coupling mechanism with the retaining pin removed. FIG. 8C shows the lower connecting mechanism from which the connecting pin member has been pulled out. FIG. 8D shows the lower coupling mechanism in which the swing plate is rotated. FIG. 8E shows the lower coupling mechanism in which the coupling pin member is pushed. FIG. 8F shows the lower coupling mechanism in the retracted state.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 shows a crane 10 according to the present embodiment. As shown in FIG. 1, the crane vehicle 10 includes a traveling body 20 that can travel and a crane 40 that is installed on the traveling body 20.

  The traveling body 20 includes a mounting base 24 on which the crane 40 is mounted and a driver seat 26 for controlling traveling of the traveling body 20. The mounting base 24 is supported by a plurality of wheels 22. The wheels 22 are configured to be driven by a drive mechanism (not shown), and some of the wheels 22 are configured to be steerable by a steering mechanism (not shown). The driver's seat 26 is provided with a plurality of control devices such as an accelerator, a brake, and a steering, and is configured so that the driving and steering of the wheels 22 can be controlled by these control devices. In addition, the mounting table 24 is provided with an outrigger 28 for stably supporting the mounting table 24 with respect to the ground when the crane 40 is operated.

  The crane 40 includes a revolving body 42 that is turnably mounted on the mount 24, a boom 46 for lifting a load, and a hoisting cylinder 48 for raising and lowering the boom 46. The boom 46 and the hoisting cylinder 48 are mounted on the swing body 42. The revolving body 42 is provided with a driver seat 44. The driver's seat 44 is provided with a plurality of operation levers and the like, and these operation levers and the like are configured to control the turning of the revolving body 42, the raising and lowering of the boom 46, and other operations such as lifting work of a load. Has been.

  The boom 46 is generally extendable, and depending on the angle of the boom 46, particularly when the boom 46 is extended and the angle of the boom 46 is small (close to horizontal), the weight of the crane 40 is very balanced. Become unbalanced. In order to suppress such an imbalance in weight, a counterweight is usually attached to the rear part of the revolving structure 42. In the present embodiment, the counterweight attached to the rear portion of the revolving structure 42 is a split-type counterweight 100 composed of a plurality of weights.

  FIG. 2 is a front view of the split counterweight 100 as seen from the rear. FIG. 3 is a plan view of the split counterweight 100 as viewed from above. FIG. 4 is a side view of the split counterweight 100 viewed from the side. Here, with respect to the split counterweight 100, in the posture mounted on the revolving structure 42, the direction approaching the revolving axis of the revolving structure 42 is the front, the direction away from the revolving axis of the revolving structure 42 is the rear, and the longitudinal direction thereof. On the other hand, for example, a direction perpendicular to the vertical is defined as a side.

  As shown in FIG. 2, the split-type counterweight 100 attached to the rear portion of the swing body 42 of the crane vehicle 10 includes a base weight 200 that is detachably attached to the rear portion of the swing body 42, and an upper portion of the base weight 200. It is comprised from the division | segmentation type | mold load weight 300 mounted in this.

  The base weight 200 has a center portion 200a projecting to the rear of the swivel body 42 and a side portion 200b projecting to the side of the center portion 200a when mounted on the rear portion of the swivel body 42. Moreover, the base weight 200 has the attachment part 210 attached to the rear part of the turning body 42 so that removal is possible (refer FIG. 3).

  The divided type loading weight 300 includes a plurality of divided type center loading weights 310 and a plurality of divided type side loading weights 360 placed on the sides of the divided type center loading weights 310. That is, the split-type stacking weight 300 includes a plurality of split-type center stacking weights 310 placed on the center part 200a of the base weight 200 and a plurality of split parts placed on the side part 200b of the base weight 200. The mold side loading weight 360 is configured.

  The plurality of split-type center loading weights 310 are all composed of the same structure. The plurality of split-type side stacking weights 360 are all configured with the same structure, similarly to the split-type center stacking weight 310.

  Each of the split-type center stacking weights 310 is configured to be able to be stacked with another split-type center stacking weight 310. Each split-type center stacking weight 310 has a convex portion 312 on the upper surface for positioning and prevention of displacement, and a concave portion 314 for receiving the convex portion 312 on the lower surface. Preferably, each split-type center loading weight 310 has a plurality of convex portions 312 and a plurality of concave portions 314. The convex portions 312 and the concave portions 314 are not limited to this, but are provided at the four corners as shown in FIG. 3, for example.

  Similarly, each divided-type side loading weight 360 is configured to be able to be stacked with another divided-type side loading weight 360. Each split-type side stacking weight 360 has a convex portion 362 on the upper surface for positioning and preventing positional deviation, and a concave portion 364 for receiving the convex portion 362 on the lower surface. Preferably, each split-type side loading weight 360 has a plurality of convex portions 362 and a plurality of concave portions 364. The protrusions 362 and the recesses 364 are not limited to this, but are provided at the four corners as shown in FIG. 3, for example.

  Further, the center portion 200 a of the base weight 200 has a convex portion 220 that engages with the concave portion 314 of the split-type center stacking weight 310 on the upper surface. Similarly, the side part 200b of the base weight 200 has a convex part 230 on the upper surface that engages the concave part 364 of the split-type side stacking weight 360.

  As shown in FIG. 3, the split-type center stacking weight 310 and the split-type side stacking weight 360 are further a portion of the base weight 200 on which the split-type center stacking weight 310 and the split-type side stacking weight 360 are placed, that is, the center. The part 200a and the side part 200b extend along the arc C. The arc C extends, for example, on a circumference around the turning axis of the turning body 42.

  Here, with respect to each split-type center loading weight 310, in the posture when mounted on the rear part of the revolving structure 42, the direction approaching the revolving axis of the revolving structure 42 is defined as the front, and the direction away from the revolving axis of the revolving structure 42 is the rear. And Under this assumption, each split-type center stacking weight 310 is formed symmetrically with respect to a vertical plane P1 including a straight line extending in the vertical direction through the center and a straight line extending in the front-rear direction through the center. It is.

  Similarly, for each split-type side loading weight 360, in the posture when mounted on the rear part of the revolving structure 42, the direction approaching the revolving axis of the revolving structure 42 is the front, and the direction away from the revolving axis of the revolving structure 42 is the rear. And Under this assumption, each split-type side load weight 360 is formed symmetrically with respect to a vertical plane P2 including a straight line extending in the vertical direction through the center and a straight line extending in the front-rear direction through the center. It is.

  In the following description, it is assumed that all the orientations related to the split-type center stacking weight 310 and the split-type side stacking weight 360 are in the posture when the split-type counterweight 100 is attached to the rear portion of the revolving structure 42. That is, front and rear refer to the direction along the above-mentioned front and back, up and down refers to the direction along the above-described vertical direction, and left and right or side refers to the direction along the above-mentioned arc C. To do.

  As shown in FIG. 4, each split-type side stacking weight 360 includes a connecting mechanism 600. For example, each split-type side loading weight 360 includes a pair of coupling mechanisms 600 provided on the left and right side surfaces, as shown in FIG. For example, the coupling mechanism 600 is provided at the bottom of a vertically extending groove provided on the side surface of the split-type side stacking weight 360 in order to avoid the protrusion. The connection mechanism 600 provided in each divided type side load weight 360 can be connected to the connection mechanism 600 provided in another divided type side load weight 360 stacked on each other. In addition, the connecting mechanism 600 provided in each split-type side stacking weight 360 is connected to each other by connecting the connecting mechanisms 600 provided in the two split-type side stacking weights 360 stacked together. The two divided side load weights 360 are fixed to each other.

  Each split-type center stacking weight 310 is also provided with a coupling mechanism (not shown). For example, each split-type center loading weight 310 includes a pair of coupling mechanisms provided on the left and right side surfaces. The connection mechanism provided in each split-type center stacking weight 310 can be connected to the connection mechanism provided in another split-type center stacking weight 310 stacked on each other. In addition, the connecting mechanism provided in each split-type center loading weight 310 has two split-ups stacked on each other by connecting the connecting mechanisms provided on the two split-type center loading weights 310 stacked on each other. The mold center loading weight 310 is configured to be fixed to each other.

  Specifically, as shown in FIG. 4, the connection mechanism 600 includes an upper connection mechanism 400 and a lower connection mechanism 500. The upper coupling mechanism 400 provided in each divided type side loading weight 360 is provided in the upper part of each divided type side loading weight 360, and the lower coupling mechanism 500 provided in each divided type side loading weight 360 is , Provided on the lower part of each split-type side stacking weight 360.

  As shown in FIG. 4, the upper connection mechanism 400 provided in each divided-type side stacking weight 360 is connected to the lower connection mechanism 500 provided in another divided-type side stacking weight 360 stacked thereon. Is possible. Further, the lower connection mechanism 500 provided in each divided-type side stacking weight 360 can be connected to the upper connection mechanism 400 provided in another divided-type side stacking weight 360 stacked thereunder. The upper connecting mechanism 400 and the lower connecting mechanism 500 provided on the two divided side stacking weights 360 stacked on each other are connected to each other, thereby fixing the two divided type side stacking weights 360 stacked on each other. Is configured to do.

  FIGS. 1 to 4 show an example in which a plurality of split-type center stacking weights 310 and a plurality of split-type side stacking weights 360 are mounted on the base weight 200. This is one example. In this case, it is not always necessary to place the plurality of divided type center loading weights 310 and the plurality of divided type side loading weights 360 on the base weight 200.

  For example, depending on the weight required during use, only one split-type side load weight 360 may be placed on the base weight 200, or the split-type side load weight 360 may be placed on the base weight 200. It does not have to be placed at all.

  Similarly, with respect to the split-type center loading weight 310, only one split-type center loading weight 310 may be placed on the base weight 200, or the split-type center loading weight 310 is placed on the base weight 200. It does not have to be placed at all.

  Further, in order to dispose a device such as a winch at the rear part of the revolving structure 42, the necessary weight is obtained by securing the space by not placing the split-type center loading weight 310 on the base weight 200. It may be obtained by placing a split-type side loading weight 360 on 200.

  Hereinafter, the connection mechanism 600, that is, the upper connection mechanism 400 and the lower connection mechanism 500 will be described in detail. FIG. 5 is a perspective view of two split-type side loading weights 360 connected to each other. As will be described later, the lower connection mechanism 500 includes a connection link 520 (see FIGS. 8A to 8F) having a swinging plate 524, the connection state connected to the upper connection mechanism 400, and the upper connection mechanism 400. The connection state is released and the swinging plate 524 of the connection link 520 is stored.

  In FIG. 5, the lower connecting mechanism 500 of the upper split-type side stacking weight 360 is connected to the upper connecting mechanism 400 of the lower split-type side stacking weight 360 and the lower split-type side stacking weight 360 is connected. The lower connection mechanism 500 of the weight 360 is in a retracted state in which the swing plate 524 of the connection link 520 is stored. FIG. 6 shows the lower coupling mechanism 500 in a coupled state with two split side loading weights 360, and FIG. 7 shows the lower coupling mechanism 500 in a retracted state with two split side loading weights 360. Show.

  Next, details of the structures of the upper coupling mechanism 400 and the lower coupling mechanism 500 will be described with reference to FIGS. 8A to 8F.

  As shown in FIGS. 8A to 8F, the upper coupling mechanism 400 includes an attachment portion 410 attached to the split-type side stacking weight 360 and a connection plate 420 extending upward from the attachment portion 410. The attachment portion 410 and the connection plate 420 are integrally formed. The attachment part 410 is attached to the split-type side stacking weight 360 with a bolt, for example.

  The connection plate 420 has a through hole 420 a for connection with the lower connection mechanism 500. The through hole 420a of the connection plate 420 is not only used for connection with the lower connection mechanism 500 but also connected with a lifting wire rope when lifting the divided side loading weight 360 to which the upper connection mechanism 400 is attached. It can also be used. That is, the connecting plate 420 has a function of a hanging ring to which the lifting wire rope is connected.

  The lower connection mechanism 500 includes an attachment portion 510 attached to the split-type side stacking weight 360 and a connection link 520 held by the attachment portion 510. The attachment portion 510 is attached to the split-type side loading weight 360 with a bolt, for example.

  The connection link 520 is an upper connection of the fixed plate 522 fixed to the mounting portion 510, the pair of swing plates 524 supported by the joint 526 so as to be swingable with respect to the fixed plate 522, and the pair of swing plates 524. A connection pin member 540 for connecting to the connection plate 420 of the mechanism 400 is provided.

  The pair of rocking plates 524 includes a rocking plate 524A on the near side and a rocking plate 524B on the back side. Here, the back side means an object to be attached to the lower side coupling mechanism 500, that is, the side close to the split-type side stacking weight 360, and the near side means the side far from the split-type side stacking weight 360. ing.

  The connection pin member 540 includes a base 542, a connection pin 544 extending from the base 542, a connection pin stopper 546 extending from the base 542, and a handle 548 provided on the base 542.

  The connecting pin 544 extends through a through hole formed in the swing plate 524A and can be inserted into a through hole formed in the swing plate 524B. The through holes and the connection pins 544 formed in the rocking plates 524A and 524B are designed so that the connection pins 544 are inserted into the through holes with an appropriate minute gap therebetween. Thus, the connecting pin member 540 is configured to be movable back and forth (front side and back side) with respect to the swing plate 524A.

  The connecting pin stopper 546 has a pin portion 546a extending through a through hole formed in the swing plate 524A, and an end portion 546b positioned at the tip of the pin portion 546a. The end portion 546b is formed to have a larger diameter than the pin portion 546a, and prevents the pin portion 546a and thus the connecting pin member 540 from being completely removed from the swing plate 524A.

  The handle 548 is provided so that the user can easily move the connecting pin member 540 back and forth with respect to the swing plate 524A (moving forward and backward). For example, the user can move the connecting pin member 540 back and forth with respect to the swing plate 524 </ b> A by an operation with one hand holding the handle 548.

  The lower coupling mechanism 500 also includes a retaining pin 560 for preventing the coupling pin member 540 from being unintentionally detached. The retaining pin 560 is connected to the fall prevention string 564 via the ring 562, and the fall prevention string 564 is connected to the attachment portion 510.

  The swing plate 524A is provided with a pair of retaining pin receiving portions 528 that receive the retaining pins 560. The retaining pin receiving portion 528 protrudes toward the front side and has a through hole into which the retaining pin 560 is inserted.

  The retaining pin 560 is inserted into the retaining pin receiving portion 528 in a state where the connecting pin member 540 is pushed inward. In this state, the base 542 of the connecting pin member 540 is disposed between the swing plate 524A and the retaining pin 560. Thereby, when the connecting pin member 540 moves to the near side, the base 542 hits the retaining pin 560 and the movement of the connecting pin member 540 is obstructed, so that the connecting pin member 540 is prevented from unintentionally coming off.

  The lower coupling mechanism 500 also has a storage plate 580 for supporting the pair of swing plates 524 in the storage state. The storage plate 580 is fixed to the attachment portion 510. The storage plate 580 has a through hole 580a into which the connection pin 544 of the connection pin member 540 can be inserted. The storage plate 580 supports the connecting pin 544 inserted into the through hole 580a, thereby maintaining the pair of swing plates 524 at a certain position (storage position) in the storage state.

  Next, an operation for switching the lower coupling mechanism 500 from the coupled state to the retracted state will be described with reference to FIGS. 8A to 8F.

  In the state shown in FIG. 8A, the lower coupling mechanism 500 is in a coupled state. In this state, the connecting pin member 540 is pushed inward, and the retaining pin 560 is inserted into the retaining pin receiving portion 528 and is located on the front side of the base 542 of the connecting pin member 540. The connection plate 420 of the upper connection mechanism 400 is located between the pair of swing plates 524. Although not shown, the connecting pin 544 extends through a through hole 420a formed in the connecting plate 420 of the upper connecting mechanism 400, and the distal end portion of the connecting pin 544 is formed on the back rocking plate 524B. Inserted into the through hole. Thereby, the lower connection mechanism 500 is connected to the upper connection mechanism 400.

  When releasing the connection between the lower connection mechanism 500 and the upper connection mechanism 400, first, the retaining pin 560 is removed from the retaining pin receiving portion 528 as shown in FIG. 8B. Thereby, the connection pin member 540 becomes a state which can move back and forth.

  Next, as shown in FIG. 8C, the connecting pin member 540 is pulled out until the end 546b of the connecting pin stopper 546 contacts the swing plate 524A. In this state, the distal end portion of the connecting pin 544 has come out of the through hole formed in the inner rocking plate 524B and the through hole 420a formed in the connecting plate 420 of the upper connecting mechanism 400. As a result, the pair of swing plates 524 can swing with respect to the fixed plate 522.

  Subsequently, as shown in FIG. 8D, the pair of swing plates 524 are rotated about the joint 526 until the connecting pin 544 is aligned with the through hole 580 a formed in the storage plate 580. In this state, the storage plate 580 is located between the pair of swing plates 524.

  Next, as shown in FIG. 8E, the connecting pin member 540 is pushed inward. In this state, although not shown, the connecting pin 544 extends through a through hole 580a formed in the storage plate 580, and the distal end portion of the connecting pin 544 is formed on the back rocking plate 524B. Inserted into the through hole. Thereby, rotation of the pair of swing plates 524 around the joint 526 is prevented. The pair of swing plates 524 is maintained at the storage position.

  Finally, as shown in FIG. 8F, the retaining pin 560 is inserted into the retaining pin receiving portion 528. Thereby, the lower side connection mechanism 500 will be in a retracted state. In this state, the base 542 of the connecting pin member 540 is disposed between the swing plate 524A and the retaining pin 560. Thereby, unintentional disconnection of the connecting pin member 540 is prevented.

  The switching operation from the connected state to the retracted state of the lower connecting mechanism 500 has been described above. However, the operation of switching the lower connecting mechanism 500 from the stored state to the connected state is performed by reversing the procedure described here.

  The divided counterweight 100 configured as described above is excellent in workability as described below.

  Since the split-type center stacking weight 310 and the split-type side stacking weight 360 are each configured by the same structure, the stacking order is not restricted.

  The split-type center stacking weight 310 and the split-type side stacking weight 360 have the convex portion 312 and the concave portion 314, the convex portion 362, and the concave portion 364 for positioning and preventing misalignment, respectively. In addition to being positioned, positional deviation after stacking is prevented.

  Since the split-type side loading weight 360 is connected by the connecting mechanism 600 attached thereto, that is, the upper connecting mechanism 400 and the lower connecting mechanism 500, a separate part for connection or a tool for the part are prepared. There is no need to do.

  In addition, since the upper coupling mechanism 400 and the lower coupling mechanism 500 are attached to the split-type side stacking weight 360, they are unlikely to be lost, unlike a coupling component prepared as a separate component.

  The connection pin member 540 of the lower connection mechanism 500 is prevented from being completely removed from the swinging plate 524A by the connection pin stopper 546, so there is no fear of losing it unlike the separated parts.

  The plurality of split side load weights 360 connected by the connection mechanism 600 can be lifted and moved together.

  Since the plurality of split type side load weights 360 placed on the base weight 200 are connected by the connecting mechanism 600, even if the crane vehicle 10 falls down, the plurality of split type side load weights 360 are separated. Is prevented from diffusing.

  Since the split-type side loading weight 360 is formed symmetrically with respect to the vertical plane P2 extending in the front-rear direction through the center thereof, for example, it is placed on the left side portion 200b of the base weight 200. When the split-type side load weight 360 is transferred onto the right side portion 200b of the base weight 200, the split-type side load weight 360 may be transferred as it is without changing the orientation in a state where the split-type side load weight 360 is lifted. ° No need to rotate.

  In addition, as a preparation stage for mounting the split-type side loading weight 360 on the revolving structure 42, it is not necessary to pile up the left side mounting and the right mounting on the ground or on the carrier bed of the transport vehicle.

  When the lower coupling mechanism 500 is in a retracted state that is not used for coupling with the upper coupling mechanism 400, the swinging plate 524 is maintained in the retracted position by the coupling pin member 540 and the storage plate 580. Don't be.

  Further, since the connecting pin 544 of the connecting pin member 540 also serves as a component for maintaining the swing plate 524 in the retracted position, it is not necessary to provide a separate component for that purpose.

  Since the connection plate 420 of the upper connection mechanism 400 has a function of a suspension ring to which the lifting wire rope is connected, it is not necessary to separately provide a suspension ring on the split side loading weight 360 to which the upper connection mechanism 400 is attached. .

  Since the connection pin member 540 is provided with the handle 548, the workability with one hand is excellent.

  As described above, the efficiency of the mounting operation of the split counterweight 100 to the revolving structure 42 is improved, the time for mounting the revolving structure 42 is shortened, and the safety of the mounting operation is also improved.

  The embodiments of the present invention have been described above with reference to the drawings. However, the present invention is not limited to these embodiments, and various modifications and changes can be made without departing from the scope of the present invention. Also good.

DESCRIPTION OF SYMBOLS 10 ... Crane vehicle, 20 ... Running body, 22 ... Wheel, 24 ... Mounting base, 26 ... Driver's seat, 28 ... Outrigger, 40 ... Crane, 42 ... Swing body, 44 ... Driver's seat, 46 ... Boom, 48 ... Rising cylinder , 100: Divided counter weight, 200: Base weight, 200a: Center portion, 200b ... Side portion, 210 ... Mounting portion, 220 ... Convex portion, 230 ... Convex portion, 300 ... Divided load weight, 310 ... Divided center Stacking weight, 312 ... convex part, 314 ... concave part, 360 ... split-type side stacking weight, 362 ... convex part, 364 ... concave part, 400 ... upper coupling mechanism, 410 ... attachment part, 420 ... coupling plate, 420a ... through hole, 500 ... Lower connection mechanism, 510 ... Mounting portion, 520 ... Connection link, 522 ... Fixed plate, 524 ... Oscillating plate, 524A ... Oscillating Rate, 524B ... Oscillating plate, 526 ... Joint, 528 ... Retaining pin receiving part, 540 ... Connecting pin member, 542 ... Base part, 544 ... Connecting pin, 546 ... Connecting pin stopper, 546a ... Pin part, 546b ... End part 548 ... handle, 560 ... retaining pin, 562 ... ring, 580 ... storage plate, 580a ... through hole, 600 ... coupling mechanism, P1 ... vertical plane, P2 ... vertical plane.

Claims (2)

A split type counterweight to be mounted on a swing body of a crane vehicle,
A base weight configured to be detachable from the revolving structure;
It is composed of a split-type loading weight placed on the base weight,
The split-type loading weight is composed of a plurality of split-type center loading weights and a plurality of split-type side loading weights placed on the side of the center loading weight,
Each split type side load weight is configured to be able to stack with other split type side load weights,
Each split-type side loading weight is formed symmetrically with respect to a vertical plane including a straight line extending in the vertical direction through the center and a straight line extending in the front-rear direction through the center.
Each split type side loading weight has a connecting mechanism, and the connecting mechanism provided on each split type side loading weight can be connected to the connecting mechanism provided on other divided type side loading weights stacked on each other. The two split-type side loading weights stacked on each other are connected to each other so that the two split-type side loading weights stacked on each other are fixed to each other. Counterweight.   The coupling mechanism is composed of an upper coupling mechanism and a lower coupling mechanism, and the upper coupling mechanism provided on each divided type side loading weight is provided on another divided type side loading weight stacked thereon. Can be connected to the lower connection mechanism, and the lower connection mechanism provided in each divided type side loading weight can be connected to the upper connection mechanism provided in the other divided type side loading weights stacked below The upper connecting mechanism and the lower connecting mechanism provided on the two divided type side loading weights stacked on each other fix the two divided type side loading weights stacked on each other by being connected to each other. The divided counterweight according to claim 1, configured as described above.