JPH0717652Y2 - Mounting structure of balance weight in tractor - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a structure in which a balance weight is attached to the front part of the machine body in order to maintain the weight balance between the machine body and the working device connected to the rear part of the machine body. More specifically, a balance weight mounting portion having a closed loop shape is formed at the front end portion of the vehicle body frame in plan view, the balance weight is hooked from above to the mounting portion, and the balance weight is attached via a bolt to the mounting portion. The present invention relates to a structure for mounting a balance weight in a tractor configured to be fixedly connected to the.

[Prior Art] As a conventional structure for attaching a balance weight to a front portion of an airframe, as shown in, for example, Japanese Utility Model Laid-Open No. 57-135478, the balance weight is hooked from above with respect to the balance weight attaching portion, and the balance weight is attached to the attaching portion. There has been a structure in which a lower wrap-around portion is extended rearward, and the extended portion is fixedly connected to a frame that is laid between the attachment portion and the left and right sides via vertical bolts.

[Problems to be solved by the device]

Since the conventional structure has a structure in which a wraparound part that wraps around a mounting part downward is screwed and connected by a bolt, a frame that extends between the mounting part and the left and right is required. There is a disadvantage in that the balance weight mounting portion becomes longer in the front-rear direction by extending the back portion, and further, a hole for inserting a bolt must be formed in the balance weight having an unstable shape.

In the present invention, by devising the structure for mounting the balance weight to the balance weight mounting portion, a separate mounting frame is not used, and no holes are formed in the balance weight. The purpose is to make it compact.

[Means for Solving the Problems]

The characteristic configuration of the present invention taken to achieve the above object is to provide a bolt for fixing the balance weight by screwing it in the front-rear direction at the front end portion of the balance weight mounting portion, and to the balance weight, An upper hook portion for the balance weight attachment portion, a wrap portion having a length in the up-down direction that can wrap around the attachment portion below the attachment portion and contact the bolt, and a space portion for allowing operation of the bolt, respectively. The point is that the balance weight is fixedly connected by applying a bolt screwed to the balance weight mounting portion to the wraparound portion.
The effects are as follows.

[Action]

Since the bolt is screwed onto the front end of the mounting part and the tip of the bolt abuts on the wraparound part and is fixed by abutting pressing, there is no need to extend the wraparound part to the rear, The direction is made compact and a separate mounting frame is not required. Further, since the balance weight is not directly screwed and fixed with a bolt, the balance weight need not be bored.

[Effect of device]

By eliminating the need for a mounting frame, the structure can be simplified, and by making the mounting frame compact, the front-rear length of the machine can be shortened.
Since it is not necessary to make holes in the balance weight having an unstable shape, the manufacturing process can be omitted. As a whole, the cost can be reduced by reducing the number of parts and the manufacturing process. I was able to do it.

〔Example〕

FIG. 1 shows the front part of the vehicle body of the tractor. In order to form a closed loop-shaped balance weight mounting part in the front end of the vehicle body frame (1) in plan view, the opening is directed toward the rear of the vehicle body in plan view. The character-shaped balance weight mounting portion (2) is fixedly connected. A plurality of balance weights (3) are attached to the balance weight attaching portion (2) in the machine width direction in order to balance the balance with a working device such as a cultivator connected to the rear of the aircraft. It is designed to be used.

The balance weight (3) is a hook-shaped hooking portion (4) hooked above the mounting portion, a wraparound portion (5) that wraps around the mounting portion downward, and a space for bolt operation screwed to the front end of the mounting portion. It is provided with a portion (6), and is configured so that the tip of the bolt (7) is brought into contact with the wraparound portion (5) and fixedly connected by abutting pressing.

Further, a handle (8) is provided on the balance weight (3) for easy carrying.

A recess (9) is formed on the upper surface of the front end of the mounting portion (2) for positioning the balance weight (3) with respect to the mounting portion, while the balance weight (3) is formed. On the side, a convex portion (10) fitted in the concave portion (9) is provided.

When the balance weight (3) is attached to the attachment portion (2), the balance weight (3) is inserted into the attachment portion (2) from below and then dropped and hooked. Then, the bolt (7) is screwed and fixed.

In the above embodiment, the balance weight mounting portion (2) is illustrated as being separate from the vehicle body frame (1), but it may be formed integrally.

It should be noted that reference numerals are added to the claims of the utility model for convenience of comparison with the drawings, but the present invention is not limited to the structure of the accompanying drawings by the entry.

[Brief description of drawings]

The drawings show an embodiment of a balance weight mounting structure for a tractor according to the present invention. FIG. 1 is a side view of a front portion of the tractor with a part thereof being cut away, and FIG. 2 is a perspective view of an essential portion with the balance weight removed. , FIG. 3 is a vertical sectional front view of a main part. (1) …… Body frame, (2) …… Balance weight mounting part, (3) …… Balance weight, (4) …… Hooking part, (5) …… Rounding part, (6) …… Space part,
(7) …… Bolt.

Claims (1)

[Scope of utility model registration request] 1. A balance weight mounting portion (2) having a closed loop shape in a plan view at a front end portion of a vehicle body frame (1).
A balance weight (3) is hooked on the mounting portion (2) from above, and the balance weight (3) is fixedly connected to the mounting portion (2) via a bolt (7). In the structure for mounting the balance weight in the tractor, a bolt (7) for fixing the balance weight (3) is screwed in the front-rear direction at the front end of the balance weight mounting portion (2), and An upper hooking part (4) with respect to the balance weight mounting part (2), a vertical length which can go around the lower part of the mounting part (2) and contact the bolt (7) to the balance weight (3). A rounded portion (5) having a height and a space portion (6) for allowing the operation of the bolt (7) are respectively formed, and the bolt (7) screwed to the balance weight mounting portion (2) is Mounting structure of the balance weight in the tractor which abutting the serial curved portion (5) is fixed connected to the balance weight (3).