JPH0411579A - Front frame reinforcing device for transfer vehicle - Google Patents

Abstract

PURPOSE:To reduce the weight of a front frame by installing a reinforcing rib which is directed from the basic edge part to the free edge part on an intermediate part in the vertical direction to the basic edge part of the front frame and inserting a steering shaft into the recessed part of a reinforcing rib. CONSTITUTION:The front free edge side of a front frame 2 is connected at the left and right sides by a front plate 15, and a front space 16 is formed between an engine front edge surface and the front plate 15. The front space 16 part is a spread width part which is spread toward the side part for the basic edge parts 2a and 2b, and a transmission case 4 is installed on the spread width part. A reinforcing rib 5 is installed on the basic edge parts 2a and 2b of the front frame 2, and a steering shaft 6 is inserted into the recessed part 5a of the reinforcing rib 5. Accordingly, a sheet metal member is made thin, and reduction of weight is secured, and each strength in the vertical and lateral directions is improved, and the sheet metal can be held, covering and protecting the outer periphery of the steering shaft 6.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a front frame reinforcement device for a mobile vehicle.

The present invention relates to a system in which the engine body is one of the strong members, and the front frame extending from the engine body is also shaped to have a high strength and is used for attaching other members.

[Prior art] A conventional engine is one in which a front frame made of cast iron is rigidly attached to the front of the engine, such as those known in Japanese Patent Application Laid-Open No. 60-76473 and Japanese Utility Model Application No. 53-79601. Next, models appeared in which the front frame was made of sheet metal and was fixed to the side of the engine while protruding all the way to the front.

[IIM to be Solved by the Invention] In the conventional device, only a cast member was replaced with a sheet metal member, so the sheet metal was thick.

[Means to solve the problem] This invention aims to make sheet metal members as thin as possible.

The aim was to reduce weight and improve vertical and horizontal strength, and requested the following technical measures. That is, in the front frame 2 whose base end is attached to the side of the engine 1 and whose free ends protrude to the left and right front of the engine 1,
A transmission case 4 that is interlocked with the steering handle 3 is provided on this protruding part, and an axle case 35 is located at the middle part of the front frame 2 in the longitudinal direction, and at the middle part of the base end of the front frame 2 in the vertical direction. , a reinforcing rib 5 extending from the proximal end to the distal end is provided, and in the recess of this reinforcing rib 5,
The structure of the front frame reinforcing device for a mobile vehicle is characterized in that a steering shaft 6 for transmitting power from a steering handle 3 to a transmission case 4 is inserted.

[Effects of the Invention] With the above-described configuration, the present invention provides the following technical effects. That is, the sheet metal member is made as thin as possible to reduce its weight, and its strength in the vertical and horizontal directions is improved while covering the outer periphery of the steering shaft 6 to protect and hold it.

[Examples] Examples of the present invention will be described in detail below with reference to the drawings. However, the dimensions, materials, shapes, relative arrangements, etc. of the component parts described in this example are not intended to limit the scope of this invention to only those, unless there is a specific description. , is merely an illustrative example.

The rotation is an agricultural tractor 7 incorporating this invention.

The agricultural tractor 7 has front axles 8,
8 and a rear wheel (not shown), and the engine 1 is positioned above the front axles 8, 8.

The engine 1 includes a head cover 9 and a cylinder head 10.
The main components are a cylinder body 11 and an oil pan 12, and a clutch housing 13 is attached to the rear of the cylinder head 10 and cylinder body 11, which are rigid bodies.

A clutch (not shown) that connects and disconnects the driving force of the engine 1 is housed inside the clutch housing 13.

Base ends 2a and 2b of the front frame 2 extending in the front-rear direction are attached to both left and right sides of the cylinder body 11, which is a rigid body, via fasteners such as bolts and nuts.

A plurality of mounting holes 14, 14 are provided in the base end portions 2a, 2b.
11. is opened.

The front free end side of the front frame 2 is left and right connected by a front plate 15 between the front end surface of the engine 1 and the front plate 15.

The front space 16 that constitutes the front space 16 is a wide part that widens laterally with respect to the base end parts 2a and 2b, and the transmission case 4 is attached to this wide part.

The transmission case 4 is interlocked with the steering handle 3, and when the steering shaft 6 rotates, this rotational force is transmitted to the axle case 3 located at the bottom of the front frame 2.
The signal is transmitted to the front axles 8, 8 at both ends of the steering wheel.

Reference numeral 17 denotes a pitman arm, which changes the rotation of the steering shaft 6 to left and right rocking via a transmission device within the transmission case 4.

By gathering the steering members near the front frame 2 in this manner, the interlocking links and rods can be shortened.

The base ends 2a, 2b of the front frame 2 are provided with reinforcing ribs 5 extending from the base ends 2a, 2b toward the free end in the upper-upper intermediate part.
A steering shaft 6 for transmitting power from the steering handle 3 to the transmission case 4 is inserted into the four parts 5a of the reinforcing rib 5 and attached to the side wall of the cylinder body 11.

Reference numeral 18 denotes a gear box, which is equipped with two bevel gears (not shown) inside, and rotates the rotation shaft 19 in the vertical direction.
The direction is changed and the power is transmitted to the steering shaft 6 in the longitudinal direction.

At the front of the engine 1, above the front space 16 of the front frame 2, there are a radiator 20, a cooling fan 21, and a battery 22.
These parts and the engine 1 are surrounded by a bonnet 24 and a side cover 2.
5 and the front grill 26.

Reference numeral 27 denotes an instrument panel that covers the rear upper part of the engine 1, and the lower part is covered with a lower cover 28.

An axle case 3 for the front axles 8, 8 is attached below the front frame 2.

The aforementioned side covers 25 are attached to both the left and right sides of the engine 1.

On the side wall surface of the side cover 25, several sub-pieces protrude outward in the front-rear direction. Ribs 29°29, . . . having a chevron-shaped cross section are provided.

At the top and bottom of this rib 29, there are 9 long exhaust ports 30 in the front and back direction.
,30. , , are open, and hot air around the engine is discharged to the outside from these exhaust ports.

Five standing walls 31 and 32 are provided at the front and rear of the rib 29, and an intake port 33 and an exhaust port 34 are opened in the front and rear walls 31 and 32, respectively.

Although not shown, the front grille 26 is provided with openings for cooling air and combustion air, and air is sucked in by the rotation of the cooling fan 21 and discharged around the engine 1.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, in which Fig. 1 is a partial enlarged view of the main part, Fig. 2 is an overall side view with a partial section, Fig. 3 is a partial side view of another member, FIG. 4 is an S-8 sectional view, and FIG. 5 is an overall side view. In the figure, numeral 1 is an engine, 2 is a front frame, 3 is a steering handle, 4 is a transmission case, 5 is a reinforcing rib, 6 is a steering shaft, and 35 is an axle case.

Claims (1)

[Claims] (1) In the front frame 2 whose base end is attached to the side of the engine 1 and whose free ends protrude toward the left and right front of the engine 1, the transmission case 4 which is interlocked and connected to the steering handle 3 is attached to this protruding portion. An axle case 35 is located below the middle of the front frame 2 in the longitudinal direction, and a reinforcing rib 5 is provided at the middle of the base end of the front frame 2 in the vertical direction, extending from the base end to the free end. A front frame reinforcing device for a mobile vehicle, characterized in that a steering shaft 6 for transmitting power from a steering handle 3 to a transmission case 4 is inserted into a concave portion of a reinforcing rib 5.