JPH04314647A - Safety frame structure for work vehicle - Google Patents

Abstract

PURPOSE:To cheaply constitute a safety frame while facilitating work for mounting the safety frame to a car body. CONSTITUTION:In a safety frame structure for a work vehicle in which a safety frame 10 is vertically provided in a condition of striding over right/left respective car body frames 11, the safety frame 10 is constituted of a pair of right/left two-part divided frame members 10A, 10B, and upper ends thereof are butt- connected.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a safety frame structure for a working vehicle, in which a safety frame is erected astride both left and right vehicle body frames.

0002

2. Description of the Related Art Conventionally, as a safety frame structure for this type of work vehicle, a single frame member bent into a substantially U-shape is used, for example, as disclosed in Japanese Utility Model Application Publication No. 2-143381. was installed upright, straddling the left and right vehicle body frames.

0003

[Problems to be Solved by the Invention] Therefore, in the above-mentioned conventional safety frame, when attaching the safety frame to the vehicle body, the worker has to lift the U-shaped frame, which is difficult to handle and is long and heavy. must be assembled,
It was hard work and the work was not easy.

The present invention has been made in view of the above-mentioned circumstances, and provides a safety frame structure for a working vehicle that allows the work of attaching the safety frame to the vehicle body to be carried out easily and allows the construction of the safety frame at low cost. For the purpose of providing.

[0005]

[Means for Solving the Problems] The safety frame structure for a working vehicle according to the present invention is such that, in the above-described one, the safety frame is constituted by a pair of left and right frame members divided into two parts, and the left and right frame members are divided into two parts. The characteristic structure is that the upper ends of the two are butted and connected. Further, the safety frame may be disposed behind the operator's seat, and a protective member for protecting the back of the head of a worker seated on the operator's seat may be provided at an upper end connecting portion of the safety frame. . The functions and effects of this characteristic configuration are as follows.

[0006]

[Operation] In other words, the safety frame is composed of a pair of left and right frame members divided into two parts, and the upper ends of the left and right frame members are butted and connected. The members are individually erected on the vehicle body frame, and then the left and right frame members are connected to each other at the abutting portions of their upper ends.

[0007]

[Effects of the Invention] Therefore, the installation work is not done by lifting the entire safety frame, but by installing the left and right frames, which are easy to handle, making the work easier, and the left and right frames also have a symmetrical shape. Since it can be configured, a single frame can be manufactured at low cost with a small number of processing steps, and it is also easy to transport, improving work efficiency and reducing costs.

[0008]

Embodiments Hereinafter, embodiments of the present invention will be explained based on the drawings. FIG. 2 shows a riding lawn mower. This riding type lawn mower has a vehicle body 1 supported by a pair of left and right front wheels 2, 2 and rear wheels 3, 3 so as to be able to travel. A bonnet 5 and a grass collection container 6 are located at the rear, an engine 7 and the like are located at the lower abdomen of the vehicle body 1, and
A mower 8 is arranged at the lower front of the vehicle body 1. A safety frame 10 is erected behind the control seat 9 in the control section 4.

The safety frame 10 is connected and fixed to a vehicle body frame 11 of the vehicle body 1, as shown in FIGS. 1 and 3. The vehicle body frame 11 includes a front frame 11A and a rear frame 11, which are assembled with square pipe members and the like in a U-shape when viewed from above.
B are welded to the upper part of the front wall and the lower part of the rear wall of a pair of left and right vertical rectangular cylindrical frames 11C, 11C at the ends of the respective frames 11A, 11B. on the other hand,
The safety frame 10 includes a pair of left and right frame members 1.
0A, 10B, each frame member 10A, 10B is configured by the square tube frame 11C.
, 11C are welded to a rectangular plate member 12 which is bent into a substantially U-shape so that they have the same shape.

In the above configuration, the square column parts 13, 13 are fitted into the square tube frames 11C, 11C with the upper ends of the square plate members 12, 12 of the left and right frame members 10A, 10B facing each other, and the square column parts 13, 13 are fitted into the square tube frames 11C, 11C. Part 13,1
3 and the square tube frames 11C, 11C are screwed together with bolts, and with the upper ends of the left and right square plate members 12, 12 abutted against each other, the two square plate members 1 are connected at the butt points.
A channel member 14 is fitted into 2 and 12 from above and connected with bolts. As shown in FIG. 2, a cushion member 15 is fixed to the front part of the channel member 14 as a protective member to protect the back of the head of a worker seated on the operator seat 9 from hitting the safety frame 10. .

Next, the mounting structure of the weight 16 for balancing the weight of the vehicle body 1 at the front and rear will be briefly described. As shown in FIGS. 2 and 4, the rear frame 1
A receiving surface on which the weight 16 is placed is provided on the horizontal frame 17 at the rear end of 1B, the weight 16 is placed on this receiving surface, and the weight 16 is fixed to the horizontal frame 17 with bolts. The shape of the rear edge of the weight 16 is as follows in plan view:
It is formed so as to draw a circular arc with respect to the pivot turning center of the vehicle body 1.

[Another Embodiment] The present invention may be implemented as follows. (a) The left and right frame members are composed of a series of bent members, and the lower ends thereof are directly connected to the vehicle body frame. (b) The left and right frame members shall be constructed of pipe members. (c) Connecting the upper parts of the left and right frame members and connecting the left and right frame members to the vehicle body frame by welding.

[0013] Although reference numerals are written in the claims for convenient comparison with the drawings, the present invention is not limited to the structure shown in the accompanying drawings.

[Brief explanation of drawings]

[Figure 1] Exploded perspective view showing how the safety frame is attached to the vehicle body frame

[Figure 2] Overall side view showing a riding lawn mower

[Figure 3] Vertical side view showing the safety frame

[Figure 4] Vertical side view showing weights installed on the vehicle body frame

[Explanation of symbols]

9 Control seat 10
Safety frame 10A, 10B frame members

Claims (2)

[Claims] Claim 1. A safety frame structure for a work vehicle in which a safety frame (10) is erected astride left and right vehicle body frames (11), wherein the safety frame (10)
), a pair of left and right frame members divided into two (10A)
, (10B), and these left and right frame members (10
Safety frame structure of a working vehicle in which the upper ends of A) and (10B) are butted and connected. 2. The safety frame (10) is disposed behind the pilot seat (9), and the safety frame (10) is arranged behind the pilot seat (9).
A protective member (15) that protects the back of the head of a worker seated on the
The safety frame structure for a work vehicle according to claim 1, wherein the safety frame (10) is provided with a connecting portion at an upper end of the safety frame (10).