JPH0413242Y2 - - Google Patents

Description

[Detailed explanation of the idea] (b) Industrial application fields The present invention relates to a cockpit structure for a power transport vehicle.

(b) Prior Art Conventionally, some power transport vehicles have a running section consisting of six or eight wheels or a running section of endless tracks. Such power transport vehicles have a driver's seat at the front or rear of the vehicle body, and a tiltable dump bed on the opposite side. Further, the cockpit faces toward the loading platform or toward the opposite direction.

However, in such a cockpit configuration, in order to move the carrier vehicle in the reverse direction, the carrier vehicle must be turned and made a U-turn, or the vehicle must be seated in the opposite direction to the traveling direction while maintaining the reverse direction. It was extremely difficult to maneuver, and there were safety issues as well.

Therefore, the inventor of the present invention first applied
In No. 2003, we disclosed a cockpit structure that can solve the above problems.

The cockpit structure has a link mechanism for reversing and raising and lowering the cockpit attached to the control section of the vehicle body, and the cockpit is attached to the top of the link mechanism, and the seating surface is attached to the cockpit in conjunction with the link movement of the link mechanism. The link mechanism is characterized in that it has a forward position and a reverse position with different seating directions, and that a pair of travel levers and a pair of clutch brake levers are respectively disposed in opposing positions on both sides of the link mechanism.

(c) Problems to be solved by the invention However, the heel cockpit structure still had the following problems regarding safety in the inverted position.

That is, the telescoping link that constitutes the reversing mechanism is constructed by fitting the outer rod to the inner rod so that it can freely slide, but since it does not have a sliding restriction means, it does not move even in the reversing position. , relative sliding was possible, and as a result, there was a risk that the cockpit would further invert toward the front, posing a safety problem for the pilot.

An object of the present invention is to provide a cockpit structure that can solve the above problems.

(d) Means for solving the problem In order to solve the above problem, the present invention provides a flexible link that can be bent into a V-shape at the lower end of the upper outer rod and the lower part of the seating part that constitute the cockpit reversing mechanism. A telescopic link detachment prevention member is attached to the lower part of the lower component link of the rotating link, and these members are made to be able to engage with each other in the reversed position of the cockpit,
The structure is such that the upper outer rod of the telescoping link is prevented from separating from the lower inner rod.

(e) Effect With the above configuration, the cockpit reversal and elevating link mechanism can be operated in accordance with forward movement or backward movement to allow the cockpit to selectively take the normal position and the inverted position, and the inverted Even in this position, relative sliding between the upper outer rod and the lower inner rod forming the telescopic link can be reliably prevented, and the cockpit can be fixed at the same position.

(F) Effects With the above configuration and operation, the present invention has the following effects.

The cockpit can be converted into the forward or reverse direction in one motion. That is, forward and reverse operations can be performed with the vehicle body in its original position without turning the power carrier.

In addition, the seating position during operation is stable, allowing safe and reliable operation.

In particular, in the inverted position, the expansion and contraction of the telescoping link can be reliably prevented, so the safety of the cockpit can be significantly improved.

(F) Example The example of the present invention will be explained in detail based on the drawings.
FIG. 3 shows the overall configuration of a power working vehicle having a cockpit structure according to the present invention.

In the figure, reference numeral 1 denotes a vehicle body that is equipped with a plurality of wheels 2 and is movable in the front and rear directions. It is equipped with a dump platform 6 that can be tilted. The present invention is essentially characterized by the structure of the control section 4, which will be specifically explained with reference to FIGS. 1 and 2.

In the figure, 7 is a floor surface in the control section 4, and a front floor surface 8 whose height is lower than the floor surface 7 by H is formed at the front of the floor surface 7.

Reference numeral 9 denotes a cockpit support base fixed in front of the floor surface 7. On the cockpit support base 9, an L-shaped cockpit seat 12 consisting of a seating part 10 and a backrest part 11 connects the seating part 10. They are supported in a detachable contact state. Incidentally, reference numeral 13 denotes a shock absorbing piece attached to the driver's seat support base 9 in order to reduce the shock when the power carrier vehicle is running.

Further, 14 is a cockpit reversing mechanism disposed substantially below the cockpit 12, and the reversing mechanism 14 has the following configuration in this embodiment.

That is, 15 is the backrest portion 11 of the cockpit 12.
This is a cockpit support fitting fixed to the back surface of the cockpit with connecting shafts 16 and 17. Further, reference numeral 18 is a telescoping link consisting of an upper outer rod 18a and a lower inner rod 18b that are slidable against each other, and the telescoping link 18 has its upper end connected to the upper part of the cockpit support fitting 15 by a pivot 19 At the same time, its lower end is connected to the rear part of a floor surface forming member 20 that forms the floor surface 7 by a pivot shaft 21.

Reference numeral 22 denotes a second rotation link disposed in an upright position at the bottom of the seating portion 10 of the cockpit 12, and one end of the rotation link 22 is connected to the lower end of the cockpit support fitting 15 by a pivot 23. At the same time, the other end is connected to the tip of the cockpit support base 9 by a pivot 24.

Furthermore, 25 and 26 are seating portions 10 of the cockpit 12.
is arranged in parallel with the second rotation link 22 at the bottom of the
The upper and lower rotating links are bendable in a V-shape around a pivot 27, and the upper end of the upper rotating link 25 is connected to the cockpit support fitting 15 via the pivot 28, the ram pipe 29, and the pivot 23. It is connected to the bottom end of. On the other hand, the lower rotation link 26 has its base end adjacent to the pivot shaft 21 and is attached to the floor surface forming member 20.
It is pivotally supported by a pivot 30.

In such a configuration, when the cockpit 12 is lifted vertically, the upper outer rod 1 of the first telescoping link 18
8a slides relative to the lower inner rod 18b,
The telescopic link 18 is extended, and the bent upper and lower rotation links 25, 26 and ram tube 29 are extended until they become straight. Thereafter, while maintaining the above-mentioned linear position, the cockpit 12 is tilted forward and the telescopic link 18 is returned to its original retracted position, so that the cockpit 12 takes the position shown by the imaginary line in FIG. .

Also, in this position, the cockpit reversing mechanism 14
Since this is a fixed chain, the cockpit 12 is fixed at the same inverted position.

However, since the telescoping link 18 constituting the cockpit reversing link mechanism 14 consists of an upper outer rod 18a and a lower inner rod 18b, if force is inadvertently applied to the cockpit 11, the telescoping link 18 may flip further forward.

Therefore, in the present invention, as shown in FIG. 1, a telescopic link detachment prevention member is provided at the lower end of the upper outer rod 18a of the first telescopic link 18 and the lower part of the lower rotary link 26 of the third rotary link. A and B are attached so that they can engage with each other in the reversed position of the cockpit 12, thereby preventing the upper outer rod 18a from separating from the lower inner rod 18b. Further, with this configuration, the cockpit 1 can be securely and firmly fixed in the reversed position, and safety can be significantly improved.

In this case, the cockpit 12 is rotated by 90 degrees, and the seat part 10 and the backrest part 1 are in the solid line position in FIG.
1 form a backrest portion and a seating portion, respectively.

That is, the cockpit 12 can be changed from the forward position shown by the solid line in FIG. 1 to the reverse position. In addition, in such a conversion, since a sufficient height h can be secured between the seating surface of the cockpit 12 and the rear floor surface 7,
The operator can maintain a stable seating position.

Reference numerals 31, 32, 33, and 34 are a pair of travel levers and a pair of clutch pedal brakes, which are disposed on both sides of the pilot's seat 12. The lever 31 and the clutch brake pedal 33 can be operated, and when the driver is seated in the cockpit 12 shown by the phantom line, the steering lever 32 and the clutch brake pedal 34 can be operated.

In addition, in FIG. 1, 35 indicates a clutch brake operation path.

[Brief explanation of the drawing]

Fig. 1 is a front view of the cockpit structure of a power carrier according to the present invention, Fig. 2 is a sectional view taken along the line of Fig. 1, and Fig. 3 is a front view of a power carrier having the same cockpit structure. . 1... Vehicle body, 4... Control section, 12... Pilot seat,
DESCRIPTION OF SYMBOLS 14... Pilot seat inversion mechanism, 18... Telescopic link at the 1st position, 18a... Upper outer rod, 18b... Lower inner rod, A, B... Telescopic link detachment prevention member.

Claims (1)

[Claims for Utility Model Registration] In the normal position, the L-shaped cockpit 12 consisting of the seating part 10 and the backrest part 11 arranged on the floor surface 7 is rotated by the cockpit reversing mechanism 14.
0 and the backrest part 11 are freely reversible to an inverted position where they are converted into a backrest part and a seating part, respectively, and the cockpit reversing mechanism 14 is in the normal position. The lower inner rod 18b is slidably fitted and formed, and the lower end of the lower inner rod 18b is pivotally supported on the rear part of the floor surface 7, and the upper outer rod 18a
A first part whose upper end is pivoted to the upper end of the backrest part 11.
A second link, which is arranged so as to be able to stand up freely at the lower part of the seating part 10 of the cockpit 12, and whose upper end is connected to the lower end of the backrest part 11 and whose lower end is pivoted to the front part of the floor surface 7. It consists of a movable link 22, and upper and lower rotary links 25 and 26 which are arranged in a V-shape so as to be bendable at the lower part of the seating part 10 of the cockpit seat 12, and the upper rotary link 2
The upper end of 5 is connected to the cockpit support fitting 1 through the ram pipe 29.
5, and the base end of the lower rotation link 26 is pivoted to the floor surface 7 at a position adjacent to the floor surface pivot portion of the first telescopic link 18; They are attached to the lower end of the upper outer rod 18a of the telescopic link 18 and the lower part of the lower rotation link 26 of the third rotation link, and are engaged with each other in the inverted position of the cockpit 12, and are attached to the lower end of the upper outer rod 18a. A cockpit structure for a power transport vehicle, characterized in that it is comprised of telescoping link detachment prevention members A and B that prevent detachment from the rod 18b.