JP2024008698A - Adapter and method of mounting car body weight - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an adapter for a car body weight, which enables the car body weight to be mounted on multiple models, and a method of mounting the car body weight.

SOLUTION: An adaptor of the present invention is detachably provided between a support body mounted on one end side of a car body weight and a holding groove formed on a holding part of a car body for holding the support body and including an arc-shaped portion that is formed in an arc shape to engage with a part of an outer peripheral surface of the support body.

SELECTED DRAWING: Figure 3

COPYRIGHT: (C)2024,JPO&INPIT

Description

The present invention relates to an adapter and a method for attaching a car body weight.

As a construction machine, a crane is known which includes a lower traveling body including a pair of running parts having crawlers or the like, and an upper revolving body to which a hoistable boom or the like is attached and rotatably supported by the lower traveling body. ing.

In such construction machines, a car body weight is sometimes attached to the car body of the lower traveling body in order to ensure stability during work. A method for easily manufacturing such a car body weight has been proposed (Japanese Unexamined Patent Publication No. 2014-125281).

Japanese Patent Application Publication No. 2014-125281

The car body weight described in the above-mentioned publication is manufactured by welding a bracket for mounting on a car body to a weight body which is made by laminating and welding a plurality of iron plates. Such car body weights are generally manufactured for each model of construction machinery. For this reason, for example, it may not be possible to attach a car body weight for a relatively large model to a relatively small car body, for example, on a different model. If car body weights are prepared for each model of construction machinery, the cost may increase and management may become complicated.

The present invention has been made based on the above-mentioned circumstances, and an object thereof is to provide a car body weight adapter and a car body weight attachment method that allow the car body weight to be easily attached to multiple models. do.

An adapter according to one aspect of the present invention, which has been made to solve the above problems, includes a support attached to one end side of a car body weight, and a holding part of a car body that holds this support. It is detachably disposed between a holding groove including an arcuate portion formed in an arcuate shape so as to engage with a part of the outer peripheral surface of the body.

A method for attaching a car body weight according to another aspect of the present invention, which has been made to solve the above problems, includes the steps of attaching the adapter to the support of the car body weight, and attaching the support to which the adapter is attached. and a step of engaging with a holding groove formed in a holding portion of the car body, and the step of attaching the adapter includes the step of attaching the adapter to the arcuate portion so that the flat portion is located below the arcuate portion. The procedure for hanging the adapter on a support is to grasp the flat part or the extending part of the suspended adapter, rotate the adapter so that the flat part is located above the circular arc part, and then remove the extending part. and a step of bringing the car body into contact with the car body weight.

The adapter and car body weight mounting method of the present invention allows car body weights to be easily mounted on multiple models.

FIG. 1 is a schematic side view showing an example of a construction machine. 2 is a schematic plan view of the undercarriage of the construction machine shown in FIG. 1. FIG. FIG. 3 is a cross-sectional view taken along line AA in FIG. FIG. 4 is a schematic side view of the holding portion in cross section B in FIG. 2. FIG. FIG. 5 is a schematic plan view of the car body weight. FIG. 6 is a right side view of the car body weight of FIG. 5. FIG. 7 is a bottom view of the car body weight of FIG. 5. FIG. 8 is an enlarged view of the main part of cross section B in FIG. 2. FIG. 9 is a schematic plan view of the adapter. 10 is a schematic right side view of the adapter of FIG. 9. FIG. FIG. 11 is a schematic top view of the adapter of FIG. 9. FIG. 12 is an enlarged view of a main part showing a state in which the adapter is suspended from a support body at cross section C in FIG. 5. FIG. FIG. 13 is a left side view of FIG. 12. FIG. 14 is an enlarged view of the main parts of the adapter shown in FIG. 12 in a rotated state. FIG. 15 is a left side view of FIG. 14.

An adapter according to one aspect of the present invention is formed on a support attached to one end side of a car body weight and a holding part of a car body that holds this support, and is engaged with a part of the outer peripheral surface of the support. It is removably disposed between the retaining groove and the retaining groove including an arcuate portion formed in an arcuate shape so as to fit together.

The adapter can fill the gap between the support body and the retention groove by being disposed between the support body of the car body weight and the retention groove of the car body that holds the support body. Therefore, even when the car body weight is attached to car bodies of a plurality of models, the attachment can be stabilized. Further, the adapter can be attached and detached freely, and does not require processing such as welding to the car body weight or car body. Therefore, the car body weight can be easily attached to multiple models.

The adapter is formed of a flat plate member, and has a rectangular flat part and a semi-cylindrical shape that extends from one side of the flat part and is curved so that one surface continuous from the flat part is the inner peripheral surface. It is good to have a section. By doing so, it can be easily placed between the car body weight and the car body.

It is preferable that the adapter further includes an extension part extending from the other side of the flat part in parallel to the flat part. By using this extending portion as a handle, the adapter can be easily handled.

A method for attaching a car body weight according to another aspect of the present invention includes the steps of attaching the adapter to the support of the car body weight, and forming the support attached with the adapter on the holding portion of the car body. and a step of hanging the adapter on the support body by the arcuate portion so that the flat portion is located below the arcuate portion; Grasp the flat part or the extending part of the lowered adapter and rotate the adapter so that the flat part is located above the circular arc part, and bring the extending part into contact with the car body weight. and has.

The mounting method of the car body weight does not require welding and fixing the adapter placed between the support and the holding groove, or using tools to attach and detach it, so the car body weight can be attached to multiple models. Easy to install.

[Details of the mode for carrying out the invention]
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings as appropriate. Note that the figures schematically show the configuration of the present invention, and the shape, scale, etc. of each configuration (each member) in each figure may differ from the actual one. In the following explanation, "front and rear" refers to the running direction of the undercarriage, and "left and right" refers to the direction (vehicle width direction) perpendicular to the running direction of the undercarriage in plan view. "Up and down" means the vertical direction of the running surface (ground, etc.) of the lower running body.

[Construction machinery]
The adapter of the present invention is used for construction machinery. The construction machine is, for example, a crane 1 as shown in FIG. The crane 1 mainly includes a lower traveling body 2 and an upper rotating body 3 supported by the lower traveling body 2. The upper revolving body 3 is rotatably supported in a plane substantially parallel to the running surface of the lower traveling body 2 . The crane 1 further includes a crane attachment 4 attached to the upper revolving body 2 so as to be able to raise and lower.

<Upper rotating body>
The upper revolving body 3 includes an operator's cabin, a raising and lowering device for raising and lowering the crane attachment 4, an engine (internal combustion engine), a hydraulic pump driven by the engine, and the like.

<Crane attachment>
The crane attachment 4 has, for example, a hook 41 attached to its tip. The crane attachment 4 includes a boom (main jib) 42 and a jib (auxiliary jib) 43, and lifts and lowers a load such as construction materials.

<Lower running body>
As shown in FIGS. 2 and 3, the lower traveling body 2 connects a pair of running sections 21 that are spaced apart in the left-right direction, and supports the upper rotating body 3 by connecting the pair of left and right running sections 21. It has a car body 22. The traveling section 21 is a crawler unit, and provides the crane 1 with self-propelling ability, allowing it to move within the site, for example. The crawler unit includes a crawler frame 24 supported by an axle 23 disposed in the front-rear direction of the car body 22, and a crawler 25 attached to the outer periphery of the crawler frame 24. The axle 23 is extendable and retractable, and can expand and contract the interval (vehicle width) between the pair of left and right running sections 21. Note that the arrow F in FIG. 2 is the traveling direction (forward direction) of the lower traveling body 2. Further, in FIG. 2, as an example, the running section 21 on the left side shows a reduced width state, and the running section 21 on the right side shows an expanded state.

The car body 22 has a support portion that supports the upper revolving body 3. The support portion includes a swing bearing 26 and the like for rotatably supporting the upper revolving body 3. The car body 22 has a holding part 27 for holding the rod-shaped support 51 of the car body weight 5 on each of the upper surface on the front end side and the upper surface on the rear end side. The holding portion 27 of this embodiment is composed of a pair of plate-shaped members (plates). As shown in FIG. 4, a holding groove 271 for receiving the support body 51 is formed in each of the pair of plates of the holding portion 27. As shown in FIG. Specifically, the holding groove 271 has an arcuate portion 272 whose lower end is formed in an arcuate shape, and a pair of opposing surfaces 273 that are continuous from the surface of the arcuate portion 272 . The distance between the pair of opposing surfaces 273 gradually increases upward so that they can be easily engaged with the support body 51.

[Car body weight]
The car body weight 5 has a support body 51, as shown in FIGS. 5, 6, and 7. The support body 51 of this embodiment is a single rod-shaped (substantially cylindrical) member. Specifically, the car body weight 5 includes a main body 52 having a substantially rectangular parallelepiped shape, a support 51 arranged at one end of the main body 52 so as to be spaced apart from the main body 52, and a support 51 arranged at the one end. 51 above the upper surface of the main body 52. The car body weight 5 has a contact portion 54 on the lower side of the one end side (rear end surface) for abutting against the front end side surface or the rear end side surface of the car body 22.

The car body weight 5 engages the support part 51 with the holding grooves 271 of the pair of holding parts 27 of the car body 22, and brings the abutting part 54 into contact with the side surface on the front end side or the side surface on the rear end side of the car body 22. By doing so, it can be attached to the car body 22.

<Adapter>
The adapter 6 is disposed between the support body 51 of the car body weight 5 and the holding groove 271 of the holding part 27 of the car body 22, as shown in FIG. The adapter 6 is for reducing or eliminating the gap between the support body 51 and the holding groove 271, and is arranged between the support body 51 and the holding groove 271 so that the car body weight attached to the car body 22 5 can be stabilized.

The adapter 6 is formed of a flat plate member, as shown in FIGS. 9, 10, and 11. By forming the adapter 6 from a flat plate member, it can be manufactured at low cost and can be easily handled. Although the material of the adapter 6 is not particularly limited, for example, steel can be used.

The adapter 6 includes a rectangular flat part 61 and a semi-cylindrical part extending from one side of the flat part 61 and curved so that one surface (surface) continuous from the flat part is the inner peripheral surface. 62, and an extending portion 63 extending from the other side of the flat portion 61 in parallel to the flat portion 61. The adapter 6 of this embodiment further includes a flat part 64 extending from the tip of the semi-cylindrical part 62.

Specifically, the semi-cylindrical portion 62 is curved so as to fit into the holding groove 271. In other words, the semi-cylindrical portion 62 is curved so that its outer peripheral surface fits into the arcuate portion 272 of the holding groove 271 . The inner circumferential surface of the semi-cylindrical portion 62 contacts the outer circumferential surface of the support body 51.

The semi-cylindrical portion 62 is formed in a substantially semi-cylindrical shape, and the range of its circumferential surface (the range where it contacts the inner circumferential surface of the support body 51) is formed to be 180° or less. The lower limit of the range of the circumferential surface is not particularly limited, but is preferably 150°, more preferably 160°, and even more preferably 170°.

The surface of the flat portion 64 and the surface of the flat portion 61 are continuous via the surface of the semi-cylindrical portion 62 and are substantially parallel. Although the length (height) from the lower end of the semi-cylindrical part 62 to the end of the flat part 64 is not particularly limited, for example, from the lower end of the semi-cylindrical part 62 to the end of the flat part 61 It is approximately half the length of .

The semi-cylindrical portion 62 extends from one side of the flat portion 61. An extending portion 63 extending parallel to the flat portion 61 is formed from the other side of the flat portion 61 . Specifically, a semi-cylindrical portion 62 extends from one side of a substantially rectangular flat surface in plan view, and an extending portion 63 extends from a part of one side adjacent to the side from which the semi-cylindrical portion 62 extends. It is extending. It is preferable that a part of the above-mentioned side is a side that is spaced apart from the semi-cylindrical part 62. The surface of the flat portion 61 and the surface of the extension portion 63 are flush with each other. Since the adapter 6 has the flat part 61 and the extending part 63, the operator can grasp at least one of the flat part 61 and the extending part 63, and can easily handle the adapter 6.

The extending portion 63 may extend from one side above the flat portion 61 (the side opposite to the side from which the semi-cylindrical portion 62 extends); It is preferable that the first side extends from the side adjacent to the side from which the second side extends. Furthermore, since the adapters 6 are used in pairs, it is possible to prepare an adapter 6 in which the extension part 63 extends from the right side of the plane part 61 and another adapter in which the extension part 63 extends from the left side of the plane part 61. preferable. By doing so, it is possible to carry out the contact procedure in the car body weight mounting method described later.

Although the length (width) in the left-right direction of the semi-cylindrical portion 62 is not particularly limited, it is preferably greater than or equal to the thickness of the plate of the holding portion 27 . Although the length (height) of the adapter 6 in the vertical direction is not particularly limited, it is preferable that the height exceeds the diameter of the support body 51.

[How to install car body weights]
The method for attaching the car body weight includes the steps of attaching the adapter 6 to the support 51 of the car body weight 5, and attaching the support 51 with the adapter 6 attached to the holding groove 271 formed in the holding part 27 of the car body 22. The adapter mounting step includes a step of suspending the adapter 6 from the support body 51 by the semi-cylindrical portion 62 so that the flat portion 61 is located below the semi-cylindrical portion 62; Grip the flat part 61 or the extending part 63 of the adapter 6 and rotate the adapter 6 so that the flat part 61 is located above the semi-cylindrical part 62, and bring the extending part 63 into contact with the car body weight 5. and a procedure to do so.

<Adapter installation process>
In the adapter mounting step, the adapter 6 is mounted on the support body 51 of the car body weight 5. The adapter mounting process includes a procedure for suspending the adapter 6 from the support body 51 by the semi-cylindrical part 62 so that the flat part 61 is located below the semi-cylindrical part 62, and a procedure for suspending the flat part 61 or the extension of the suspended adapter 6. Gripping the protruding part 63 and rotating the adapter 6 so that the flat part 61 is positioned above the semi-cylindrical part 62, the extending part 63 is attached to the support plate 53 that supports the support body 51 of the car body weight 5. and a procedure for bringing it into contact with.

[Hanging procedure]
In the hanging procedure, as shown in FIGS. 12 and 13, the adapter 6 is suspended from the support body 51 by the semi-cylindrical part 62 so that the flat part 61 is located below the semi-cylindrical part 62. That is, the adapter 6 is suspended from the support body 51. When suspending the adapter 6 from the support 51, the back surface of the flat portion 61 (the surface continuous from the outer circumferential surface of the semi-cylindrical portion 62) should face the main body 51 side of the car body weight 5 and be extended. It is preferable to hang it so that the portion 63 is located on the support plate 53 side. Further, it is preferable to suspend the extending portion 63 so as not to contact the support plate 53.

[Contact procedure]
In the abutting procedure, as shown in FIGS. 14 and 15, grip the suspended adapter 6 by its flat part 61 or extension part 63 and place the adapter so that the flat part 61 is located above the semi-cylindrical part 62. 6 to bring the extending portion 63 into contact with the car body weight 5. That is, the adapter 6 is rotated toward the main body of the car body weight 5 around the support 51 so that the flat portion 61 and the extension 63 are located above the support 51, and the extension protruding in the left-right direction The lower edge of the portion 63 is brought into contact with the upper edge of the support plate 52. That is, the adapter 6 is moved (slided) toward the support plate 53 while being rotated. In this way, it is preferable that the extending portion 63 is formed such that its lower edge abuts the upper edge of the support plate 52 . By bringing the lower edge of the extending portion 63 into contact with the upper edge of the support plate 52, unintentional rotation of the adapter 6 can be suppressed, and detachment of the adapter 6 from the support body 51 can be suppressed.

<Engagement process>
In the engagement step, the support body 51 with the adapter 6 attached thereto is engaged with the holding groove 271 formed in the holding portion 27 of the car body 22 (see FIG. 8). The car body weight 5 is attached to the car body 22 by the support body 51 engaging with the holding groove 271 and the contact portion 54 abutting the front end side surface or the rear end side surface of the car body 22.

[advantage]
The adapter 6 is disposed between the support 51 of the car body weight 5 and the holding groove 271 of the car body 22 that holds this support 51, thereby filling the gap between the support 51 and the holding groove 271. be able to. Therefore, even when the car body weight 5 having the support body 51 having a smaller diameter than the diameter of the arcuate portion 272 of the holding groove 271 is attached to the car body 22, the support body 51 may wobble within the holding groove 271. This can be suppressed and the attachment can be stabilized.

The method for attaching the car body weight is that the adapter 6 can be attached to the car body weight 5 by hanging the detachable adapter 6 onto the support 51 and inverting it. There is no need to weld to the groove 271 or fix with tools. Therefore, the car body weight 5 having the support body 51 having a smaller diameter than the diameter of the arcuate portion 272 of the holding groove 271 can be easily attached to the car body 22.

[Other embodiments]
The above embodiments do not limit the configuration of the present invention. Therefore, in the above embodiment, it is possible to omit, replace, or add the constituent elements of each part of the above embodiment based on the description of this specification and common general technical knowledge, and all of these are interpreted as falling within the scope of the present invention. Should.

The adapter does not necessarily have to be formed of a flat plate member, and its shape is not particularly limited as long as it can reduce or eliminate the gap between the support of the car body weight and the holding groove of the car body. do not have.

The number of extension parts extending from the plane part is not limited to one, and a plurality of extension parts may extend from a plurality of sides of the plane part.

The flat portion and the extending portion do not need to be formed flush with each other, and may have a stepped portion. Further, the surface of the plane portion and the surface of the extension portion do not necessarily have to be parallel.

In the above embodiment, the lower edge of the extending portion of the adapter is brought into contact with the upper edge of the support plate of the car body weight, but if the adapter can be prevented from rotating and falling, The extension portion of the adapter may abut another member of the car body weight. The part that comes into contact with the car body weight to prevent rotation of the adapter may be a flat part.

The holder of the car body is not limited to a pair of plates as long as it can support the support of the car body weight.

The support body does not need to be a single rod-shaped member, and the support body may be attached to each of the pair of support plates of the car body weight.

INDUSTRIAL APPLICATION The adapter of this invention can attach one car body weight to several models of car bodies, and can be used suitably for construction machinery.

1 Crane 2 Lower traveling body 21 Traveling part 22 Car body 23 Axle 24 Crawler frame 25 Crawler 26 Swing bearing 27 Holding part 271 Holding groove 272 Arc-shaped part 273 Opposing surface 3 Upper revolving body 4 Crane attachment 41 Hook 42 Boom 43 Jib 5 Car Body weight 51 Support body 52 Main body 53 Support plate 54 Contact portion 6 Adapter 61 Plane portion 62 Semi-cylindrical portion 63 Extension portion 64 Flat portion F Traveling direction of the traveling body (forward direction)

Claims (4)

A support body attached to one end side of the car body weight and a holding part of the car body that holds this support body are formed in an arc shape so as to engage with a part of the outer peripheral surface of the support body. An adapter that is removably placed between the holding groove and the holding groove that includes an arcuate portion. It is formed of a flat plate member,
A rectangular plane part,
The adapter according to claim 1, further comprising a semi-cylindrical part extending from one side of the flat part and curved so that one surface continuous from the flat part is an inner circumferential surface. 3. The adapter according to claim 2, further comprising an extending portion extending from the other side of the flat portion in parallel with the flat portion. A method of attaching a car body weight to a car body,
Attaching the adapter according to claim 3 to the support of the car body weight;
engaging the support body with the adapter attached to a holding groove formed in a holding part of the car body;
The above adapter installation process is
suspending the adapter from the support body by the arcuate portion so that the flat portion is located below the arcuate portion;
Grasp the flat part or the extending part of the suspended adapter and rotate the adapter so that the flat part is located above the circular arc part, and bring the extending part into contact with the car body weight. How to install car body weights with steps and steps.

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