JPH0723047U - Work attachment adapter - Google Patents

Abstract

(57) [Summary] [Purpose] With the work attachment of the prior art, when the relay boom is not used, the base end of the front boom is
It was designed to be attached directly to the tip of the main boom.
In addition, the shape and weight of the base end of the front boom are unnecessarily large, which is a structural problem, and the work attachment components with different mounting dimensions can be connected to the tip of the main boom. There wasn't. This problem is solved. [Structure] In the adapter of the present invention, the rear upper pin hole and the ventral side upper pin hole are drilled so that the required work attachment components can be connected, and the rear side pin hole and the ventral side of the tip of the main boom are connected. Forming a box-shaped adapter body that has a boss that opens a lower pin hole on the back side and a lower pin hole on the ventral side that can be connected to pin holes, and is centered around the hole center of the upper pin hole on the back side of the adapter body A boom bend pin hole was formed in an arc shape with a radius.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention mainly relates to a work attachment adapter mounted on the front part of a construction machine such as a hydraulic excavator.

[0002]

[Prior art]

 FIG. 5 is a side view showing the work (long) attachment 1 described in Japanese Utility Model Laid-Open No. 64-28452. In the figure, 2 is a main boom, 3 is a front boom 4, 5 is a relay boom, 6 is an arm, and 7 is a crusher as a work tool. FIG. 6 is a side view showing a state in which the front boom 3 is connected to the tip end portion of the main boom 2 in FIG. 5 in a boom bend shape for a backhoe. In the figure, 8 is an arm and 9 is a bucket as a work tool. As shown in FIGS. 5 and 6, in the conventional work attachment, a backhoe-use pin hole 10 is opened on the ventral side of the tip of the main boom 2. Therefore, the main boom 2 can be used as both the long attachment and the backhoe attachment.

[0003]

[Problems to be solved by the device]

 In the work attachment for work at high places, one or more relay booms can be attached and detached between the main boom and the front boom according to the work height. Therefore, the shape of the main boom is set to a large size and the connecting pin is set to a large diameter, and the pin diameter of the pin connecting portion of the relay boom is the same as the pin diameter of the tip of the main boom. In the conventional work attachment, the pin diameter at the base end of the front boom is made the same as the pin diameter at the tip of the main boom, and when the relay boom is not used, the base end of the front boom is connected to the tip of the main boom. I tried to mount it directly. As a result, the shape and weight of the base end of the front boom are unnecessarily large, which is a structural problem, and the required work attachment components are connected to the tip of the main boom or the tip of the relay boom. I couldn't. An object of the present invention is to provide an adapter that can solve the above problems.

[0004]

[Means for Solving the Problems]

 In the adapter of the present invention, a boom, an arm, and a work tool are sequentially connected to the front part of the vehicle body to form a work attachment, and the boom is divided into a main boom and a front boom. For work attachments that allow one or more relay booms to be attached to and detached from the boom, open the rear upper pin hole and the ventral upper pin hole to connect the required work attachment components. The bracket body and the adapter body with the rear lower pin hole that can be connected to the rear side pin hole and the ventral side pin hole at the tip of the main boom and the boss with the ventral side lower pin hole opened are formed into a box shape. Align the center of the rear upper pin hole of the adapter body with an arc of the same radius, and make the boom base parallel to the center of the upper pin hole of the ventral surface and of the same diameter. It was perforated in the pin hole de, and connecting the adapter body to the main boom tip or relay boom tip, constructed by connecting a required work attach components to the adapter body distal end.

[0005]

[Action]

 In the adapter of the present invention, the rear side upper pin hole and the ventral side upper pin hole are opened in the bracket formed on the upper part of the adapter body so that the required work attachment components can be connected. That is, since the bracket of the adapter body is formed corresponding to the size and shape of the mounting portion of the required work attachment component, the work attachment can be reassembled to the optimum work attachment corresponding to the work content. Further, when the work attachment component is a front boom, the shape and weight of the front end of the front boom can be made smaller and lighter than the conventional front boom. In addition, by installing an adapter on the work attachment, the boom can be selected as a side view straight or a dogleg bent shape, or the adapter itself can be used as a single joint.

[0006]

【Example】

 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a side view showing a work attachment 12 equipped with an adapter 11 of the present invention. In the figure, 13 is a main boom, 14 is a front boom that is a work attachment component (the work attachment is not limited to the front boom, but the front boom is an example for convenience of explanation), 15 is a relay boom, 16 Is an arm and 17 is a crusher. FIG. 2 is a side view showing a work attachment 12 'in which the relay boom 15 in FIG. 1 is removed and the boom is reassembled into a V-shaped hend shape in order to dismantle the foundation of a low place such as a building. FIG. 3 is a detailed view of part A of FIG. In the figure, 18 is the adapter body of the adapter 11, 19 is a rear side upper pin hole opened in the adapter body 18, 20 is a ventral side upper pin hole, 21 is a boom bend pin hole, and 22 is a back side lower pin hole. , 23 is a lower pin hole on the abdominal surface side, 24 is a pin inserted through the upper pin hole 19 on the rear side and the rear pin hole a on the base end of the front boom 14, and 25 is a pin hole 21 for the boom bend. And a pin which is fitted and inserted through a ventral side pin hole (b) at the base end of the front boom (14), and 26 passes through a rear lower side pin hole (22) and a rear side pin hole (c) at the tip of the main boom (13). The reference numeral 27 denotes a pin inserted through the lower part of the abdominal surface side pin hole 23 and the abdominal surface side pin hole d at the tip of the main boom 13. FIG. 4 is a cross-sectional view of the main part viewed from BB of FIG. In the figure, 28 is a bracket of the adapter body 18, 29 is a boss, φd is the pin diameter of the pin 24, and φD is the pin diameter of the pin 26.

Next, the configuration of the adapter 11 of the present invention will be described with reference to FIGS. In the present invention, a rear side pin hole 19 (shown in FIGS. 3 and 4) at the base end of the front boom 14 and a rear side upper pin hole 19 and a front side upper pin hole 20 which can be connected to the front side pin hole B are opened. The opened bracket 28 (shown in FIG. 4) and the rear lower pin hole 22 and the lower ventral pin hole 23 which can be connected to the rear pin hole C and the ventral pin hole D at the tip of the main boom 13 are opened. The adapter body 18 having the bosses 29 (shown in FIG. 4) formed in a box shape is formed into a box-shaped one having a same radius R (shown in FIG. 3) centered on the hole center of the rear upper pin hole 19 of the adapter body 18. A boom bend pin hole 21 is opened in an arc shape in parallel with the hole center of the abdominal surface side upper pin hole 20 and has the same diameter, and the adapter body 18 is connected to the front end of the main boom 13 or the front end of the relay boom 15. The front of the adapter body 18 The boom 14 is configured to be connected.

Next, the operation of the adapter 11 of the present invention will be described. In the present invention, the back side upper pin hole 19 and the ventral side upper pin hole 20 are opened so that the work attachment components can be connected to the bracket 28 formed on the upper portion of the main body 18 of the adapter. That is, since the bracket 28 of the adapter body 18 is formed in accordance with the dimensions and shape of the mounting portion of the required work attachment components, it is necessary to replace the work attachment with the optimum work attachment corresponding to the work content. Comes. When the work attachment component is the front boom 14, the shape and weight of the base end of the front boom 14 should be smaller and lighter than the conventional front boom (reference numeral 3 shown in FIGS. 5 and 6). You can Further, by providing the adapter 11 to the work attachment, the boom can be selected as a straight side view or a dogleg bend shape, but since the relay boom can be used as usual, the durability of the relay boom can be maintained, and The adapter itself can act as a single relay.

[0009]

[Effect of device]

 In the adapter of the present invention, the rear side upper pin hole and the ventral side upper pin hole are opened in the bracket formed on the upper part of the adapter body so that the required work attachment components can be connected. That is, since the bracket of the adapter body is formed corresponding to the size shape of the mounting portion of the required work attachment component, the work attachment can be reassembled according to the work content. Further, when the work attachment component is the front boom, the shape and weight of the front end of the front boom can be made smaller and lighter than the conventional front boom. In addition, by installing the adapter on the work attachment, the boom can be selected as a straight side view or a dogleg bend shape, and the adapter itself can be a single joint. Therefore, in the work attachment equipped with the adapter of the present invention, the work attachment can have appropriate strength and workability can be improved.

[Brief description of drawings]

FIG. 1 is a side view showing a work attachment equipped with an adapter of the present invention.

FIG. 2 is a side view showing a work attachment in which the boom in FIG. 1 is reassembled into a bend shape.

FIG. 3 is a detailed view of part A of FIG.

FIG. 4 is a cross-sectional view of a main part seen from BB of FIG.

FIG. 5 is a side view showing a conventional work attachment.

6 is a side view showing a state in which the work attachment in FIG. 5 is used for a backhoe.

[Explanation of symbols]

 1,12,12 'Work attachment 2,13 Main boom 3,14 Front boom 6,8,16 Arm 7,17 Crusher 11 Adapter 18 Adapter body 19 Rear upper pin hole (of adapter body 18) 20 (Adapter body) 18) Ventral side upper pin hole 21 Boom bend pin hole 22 (Adapter body 18) back side lower pin hole 23 (Adapter body 18) ventral side lower pin hole 24, 25, 26, 27 pin 28 Bracket 29 Boss

Claims (1)

[Scope of utility model registration request] 1. A boom, an arm, and a work tool are sequentially connected to a front portion of a vehicle body to form a work attachment, and the boom is divided into a main boom and a front boom to be formed. In a work attachment that allows one or more relay booms to be attached and detached between the brackets, a bracket with a rear side upper pin hole and a ventral side upper pin hole opened so that the required work attachment components can be connected. , A box-shaped adapter body with a boss that opens a lower back pinhole and a lower venthole pinhole that can be connected to the backside pinhole and ventral side pinhole on the tip of the main boom Open a boom bend pin hole parallel to the ventral side upper pin hole center and in the same diameter on an arc of the same radius centered on the back side upper pin hole center point. An adapter for a work attachment, characterized in that the adapter body is pierced, and the adapter body is connected to a tip portion of a main boom or a relay boom, and required work attachment components are connected to the tip portion of the adapter body.