JPS6146060Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a tractor, which protects the passenger and driver in the event of a vehicle overturning, and effectively utilizes the protective structure to provide an instrument box equipped with various instruments that can be used to prevent vibrations caused by vibrations of the vehicle. This suppresses the resonance of the instrument box, increases the mounting strength of the instrument box, and reduces the total number of parts.
The purpose is to increase the strength around the instrument box mounting part.

Next, embodiments of the present invention will be described in detail based on the drawings.

The cylindrical left and right main frames 1, 1 are connected to each other by a frame 2 spaced apart in the longitudinal direction to form a vehicle body frame 3, and on the front side of this body frame 3, two Hydraulic pumps P ₁ , P ₂
A case 5 is mounted on the rear side of the vehicle body frame in which a gear type transmission mechanism and a differential device, each of which is directly connected to the motor _M1 connected to the pump _P1 , are installed. , a frame 7 is installed above the rear side of the vehicle body frame 3 via a support 6.
and a frame 8 is provided directly at the lower part of the front side of the vehicle body frame 3 so as to protrude laterally outward from the vehicle body frame 3, respectively, and on both sides of the horizontal frame 8 on the front side, Front wheels 11, 11 are attached to the front wheels 11, 11, which can be driven up and down by the cylinder 9 and can be steered left and right in conjunction with the handle ₁₂ of the driving section 10. A transmission case 1 is provided with an interlocking motor _M2 , and a rear wheel 13 is provided on a cover of a differential shaft projecting left and right from the transmission case 5.
4 are connected to be vertically swingable around the differential shaft, and a swinging cylinder 15 is connected across the transmission case 14 and the end of the rear horizontal frame 7, thereby creating a frame structure that can be freely raised and lowered from the ground. An all-wheel drive type traveling vehicle body A is constructed, and an internal work equipment transmission and the engine 4 are interlocked and connected to the transmission case 5, and a power take-off shaft 16 for the work equipment protrudes from the rear of the case 5. A link mechanism 17 for lifting and lowering the working device is provided, and a driver's seat 18 is provided at the top of the speed change case 5 to form the driving section 10. An instrument box 19 equipped with various instruments, a handle 12, and various operating tools are arranged, and a step 20 is provided on the outside of the main frame.
The tractor is constructed by attaching the following.

A frame 28 for attaching the step 20 is provided on each of the main frames 1, 1 so as to protrude outward from the side of the main frame, and is located approximately in the same phase as the front end portion of the step mounting frame 28 in side view. The pillar 21 in the state of
21 is erected, and across these supports 21, 21,
A horizontal frame 22 is erected with the left and right main frames 1, 1 projecting outward laterally, and a U-shaped member 23 as a gate-shaped frame and a connecting member 24 connecting the bent upper end sides thereof are used for boarding. The frame 7 is constructed such that the protection frame B for protection against persons is configured such that its front left and right lower ends extend over the step mounting frame 28 and the horizontal frame 22, and its rear left and right lower ends serve as the support columns 6.
The instrument box 19 is welded and connected to the main frame 1, and the instrument box 19 is attached to the horizontal frame 22, and the shape retaining member 1 inside the box is welded and connected.
A pair of left and right horizontal frames 25 and 25 for reinforcing the instrument box are constructed across the upper end side of 9a and the protective frame B, and the step mounting frame 28, the horizontal frame 22, the support column 21, and the protective frame B are installed.
The space surrounded by the foot cover 29 is covered by the foot cover 29, and the protection frame B protects the passenger and driver in the event of the vehicle overturning, and the instrument box reinforcing frames 25, 25 are connected to the protection frame B, which has a strong structure. By doing so, the mounting strength of the instrument box 19 is increased, and the vibration of the instrument box 19, which is made of sheet metal or synthetic resin and is inherently prone to resonate with vehicle body vibration, is suppressed, and the instruments caused by the vibration are suppressed. damage or malfunction of the foot cover 29, frames 22, 28, struts 21, The overall strength can be increased by mutually functioning as a reinforcing member around the protective frames B.

A U-shaped frame 26 is attached to each of the left and right main frames 1, 1, and is positioned above the left and right main frames 1, 1 and passes between the support column 21 and the horizontal frame 22.
is welded and connected to the main frame 1, and a frame 27 connected thereto is welded and connected to the U-shaped frame 26 and the protection frame B, and a support 30 is provided in the middle part, so that The structure has a high bending strength.

Incidentally, a plurality of pairs of the reinforcing horizontal frames 25, 25 may be constructed vertically apart from each other at intervals.

In summary, in the tractor according to the present invention, step mounting frames are provided on each of the left and right main frames in a state that extends outward from the left and right, and a pair of left and right supports are respectively erected near the step mounting frame positions of the left and right main frames. A horizontal frame is provided so as to protrude outward from the right and left sides of the left and right main frames; A pair of left and right gate-shaped frames that are erected near the rear end of the main frame and are gate-shaped in side view, and a connecting member that connects the upper end sides of the pair of left and right gate-shaped frames to each other provide protection for the passenger. At least a pair of left and right horizontal frames for reinforcing the instrument box are constructed across the instrument box disposed in front of the driver's seat and the protective frame, and the step mounting frame, the horizontal frame, the struts, and , is characterized in that a foot cover is connected to cover the space surrounded by the protective frame.

In other words, by attaching a protective frame to ensure the safety of passengers and drivers when the vehicle overturns, and by effectively utilizing the strong structure of the protective frame and connecting the instrument box reinforcing frame to it, The mounting strength of the instrument box can be increased, and the resonance of the instrument box caused by vehicle body vibration can be suppressed, and by suppressing resonance, it has become difficult for instruments to be damaged or malfunction.

In addition, the protective frame, its mounting frame, and support struts, as well as the foot cover each function as a strength member, increasing the strength of the surrounding area, and the mounting structure of the horizontal frame for reinforcing the instrument box and the foot cover is shared. As a result, the overall number of parts can be reduced.

[Brief explanation of the drawing]

The drawings show an embodiment of a tractor according to the present invention,
FIG. 1 is an overall side view, FIG. 2 is a side view of the vehicle body frame and protective frame, and FIG. 3 is a longitudinal sectional view with an instrument box attached. 1... Main frame, 18... Driver's seat, 19
...Instruments, 21...Strut, 22...Horizontal frame, 23...Gate frame, 24...Connecting member, 25...Horizontal frame for reinforcing instrument box, 28
...Step mounting frame, 29...Foot cover, B...Protection frame.

Claims (1)

[Scope of utility model registration request] Step mounting frames 28, 28 are provided on the left and right main frames 1, 1, respectively, in a state of extending outward from the left and right sides, and left and right step mounting frames 28, 28 are provided upright near the positions of the step mounting frames 28, 28 of the left and right main frames 1, 1, respectively. A horizontal frame 22 is provided extending outwardly from the left and right sides of the left and right main frames 1, 1 over the pair of pillars 21, 21, and the front side is connected to the outer end portion of the step mounting frame 28 and the horizontal frame 22. a pair of left and right gate-shaped frames 23, 23, which are gate-shaped in side view, and whose rear sides are erected near the rear end of the main frame 1; Connecting members 24, 24 that connect the upper end sides of 23, 23 to each other constitute a protective frame B for the onboard driver, and further, an instrument box 19 disposed in the front of the driver's seat 18 and the protective frame B are connected to each other. , at least a pair of left and right horizontal frames 2 for reinforcing the instrument box.
5 and 25, and a foot cover 29 that covers the space surrounded by the step mounting frame 28, the horizontal frame 22, the support column 21, and the protective frame B is connected to the tractor.