JP2000190731A - Canopy device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To secure a required space where an operator puts on a driver's seat and operates even when longitudinal length of a ceiling portion is longer than a strut, by placing the strut and an auxiliary strut on a car body rotatably back and forth, and by providing a ceiling portion with a slide mechanism for back-and-forth moving a ceiling on a support body. SOLUTION: This device 1 is provided with a strut 4 and an auxiliary strut 5 that are mounted to a pedestal 3 at the back of a driver's seat 2 of a constructing vehicle, back and forth rotatably and spaced in the back and forth direction, and a ceiling portion 6 over the driver's seat 2. A ceiling 61 is moved by a slide mechanism backward on a support body 62, and the strut 4 and the auxiliary strut 5 are rotated backward. Thus, the ceiling portion 6 can move from a higher normal position covering over the driver's seat 2 to a lower storage position at the back of the driver's seat 2. In addition, even if longitudinal length of the ceiling portion 6 is relatively longer than the strut 4, when the ceiling portion 6 is moved to the storage position, a required space is secured where an operator puts on the driver's seat 2 and operates.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a canopy device provided in a construction vehicle such as a wheel loader.

[0002]

2. Description of the Related Art A construction vehicle such as a wheel loader is provided with a canopy device for protecting a driver's seat from sunshine and rain. In general, this canopy device has upright supports on the left and right sides behind the driver's seat on the vehicle body in order to secure a front view and facilitate the operator's getting on and off the driver's seat. The ceiling is fixed to cover the top.

[0003] In construction vehicles such as wheel loaders, the minimum ground clearance of the traveling body is set high so that the vehicle can travel and work on uneven terrain. Therefore, the position of the driver's seat is also high. The canopy device provided to cover,
It is the highest part of a construction vehicle. When transporting a construction vehicle equipped with such a canopy device to a work site using a trailer or the like, when the construction vehicle is directly loaded on the trailer or the like,
It may exceed the height specified in the vehicle restriction order. At this time, the canopy device must be removed from the construction vehicle in order to reduce the height below the height specified in the vehicle restriction order. In addition, when entering a building or the like in which the height of the entrance or the ceiling is lower than the ceiling of the canopy device and performing work, it is necessary to remove the canopy device.

[0004] However, since the canopy device is heavy and firmly fixed on the body of the construction vehicle, it is not easy to remove the canopy device from the construction vehicle. Equipment is required. Therefore, the auxiliary column is arranged to be separated from the column in the front-rear direction, the column and the auxiliary column are pivotally mounted on the vehicle body so as to be able to rotate back and forth, and the ceiling is pivotally attached to the upper ends of the column and the auxiliary column. A canopy device has been proposed (see Japanese Patent Application No. 8-303326).

[0005] In this canopy device, the ceiling can be moved downward from the normal position covering the driver's seat to the low storage position by rotating the support column and the auxiliary support column backward. Therefore, even if the height of the construction vehicle is restricted as described above, it is not necessary to remove the construction vehicle from the vehicle body.

[0006]

However, in the structure of the canopy device, the length of the ceiling in the front-rear direction is relatively longer than the length of the column (the length of the column is relatively short). When the pillar is rotated backward, the ceiling retreat distance is insufficient and the tip of the ceiling is positioned above the driver's seat, which is necessary for the operator to operate in the driver's seat. There is a problem that it is not possible to secure a comfortable space.

The present invention solves such a problem in a canopy device for a construction vehicle. When the height of the construction vehicle is restricted, it is not necessary to remove the construction vehicle from the vehicle body. It is an object of the present invention to provide a canopy device that can secure a space necessary for an operator to get on a driver's seat and perform an operation, even if the canopy is relatively long compared to the length of a column.

[0008]

According to the present invention, in order to solve the above-mentioned problems, a support and an auxiliary support are separated from each other in a front-rear direction.
In a canopy device pivotally mounted on a vehicle body so as to be able to pivot back and forth, and a ceiling portion pivotally attached to upper ends of a support column and an auxiliary column, a slide mechanism is provided at the ceiling portion to move the ceiling back and forth on the support. .

In this canopy device, the ceiling is moved rearward on the support by the slide mechanism, and the support column and the auxiliary support column are rotated rearward, so that the ceiling portion covers the driver's seat from a high normal position. Move to the rear lower storage position. Therefore, when the height of the construction vehicle is limited,
It is not necessary to remove the ceiling from the vehicle body, and even if the length of the ceiling in the front-rear direction is relatively longer than the length of the column, when the ceiling is moved to the stowed position, the operator does not need to remove the driver's seat. The space required for boarding and performing operations is secured.

[0010]

FIG. 1 is a side view of a canopy device showing an embodiment of the present invention, FIG. 2 is a rear view of the canopy device, FIG. 3 is a plan view of a slide mechanism, and FIG. FIGS. 5 and 5 are cross-sectional views taken along line AA of FIG. 3. FIG. 6 is a plan view of a slide mechanism showing a state where the slide frame has moved to the rear end. FIG. 7 is a slide showing a state where the slide frame has moved to the rear end. 8 is a sectional view taken along line BB of FIG. 6, FIG. 9 is a sectional view taken along line CC of FIG. 7, and FIG. 10 is an explanatory view of the operation of the canopy device.

The canopy device 1 is pivotally mounted on a pedestal 3 fixed on both left and right sides of a vehicle body behind a driver's seat 2 of a construction vehicle such as a wheel loader so as to be rotatable back and forth in the front-rear direction. The vehicle includes a support 4, an auxiliary support 5, and a ceiling 6 for covering the driver's seat 2. The ceiling portion 6 is provided with a slide mechanism 7 for moving the ceiling 61 on the support 62 in the front-rear direction.

The support 4 and the auxiliary support 5 have their lower ends pivotally connected to the pedestal 3 with pins 41 and 51, respectively, and the upper ends thereof are pivotally attached to a support bracket 63 of a support 62 with pins 42 and 52. ing. Here, the distance between the pin 41 at the lower end of the support and the pin 42 at the upper end is equal to the distance between the pin 51 at the lower end of the auxiliary support 5 and the pin 52 at the upper end,
The distance between the pin 41 at the lower end of the support and the pin 51 at the lower end of the auxiliary support 5 and the distance between the pin 42 at the upper end of the support and the pin 52 at the upper end of the auxiliary support 5 are different. The support 4, the auxiliary support 5, the pedestal 3, and the support bracket 63 form a so-called parallel link. A handrail 45 is provided on a side surface of the support 4.

A through hole 43 is formed at the lower end of the column 4 so as to penetrate the pedestal 3 when the column 4 is in the normal position shown in FIG.
Is formed so as to coincide with the through hole 31 formed in the through hole.
By inserting the L-shaped fixing pin 9 into the through holes 43 and 31 in this state, the support 4 and the auxiliary support 5 are held at the normal position. A retaining pin 10 is inserted into the tip of the fixing pin 9 inserted into the through holes 43 and 31 to prevent the fixing pin 9 from falling off.

A fixing bolt 11 is provided on the front surface of the base 3.
A screw hole is provided on the front surface of the lower end of the column 4, and the fixing bolt 11 is screwed into the screw hole to securely fix the column 4 to ensure safety during work and running. .
On the rear surface of the support 4, two stoppers 12 are vertically separated.
When the column 4 and the auxiliary column 5 rotate rearward to reach the storage position as shown in FIG. 10, the stopper 12 abuts on the auxiliary column 5 and rotation is restricted rearward. You.

The pedestal 3 is also provided with a through-hole 32 at a position corresponding to the through-hole 43 when the support 4 reaches the storage position, and the fixing pins 9 are inserted through the through-holes 43 and 32. Thereby, the support 4 and the auxiliary support 5 are held at the storage positions. A clevis 15 of a gas spring 14 is rotatably mounted on the auxiliary support 5, and a distal end of a piston rod 16 of the gas spring 14 is rotatably mounted on a mounting bracket 17 projecting upward from the pedestal 3. Have been. The gas spring 14 is a balance urging unit that urges the auxiliary column 5 forward when rotating the column 4 and the auxiliary column 5.

The slide mechanism 7 of the ceiling portion 6 includes a slide frame 71 to which the ceiling 61 is fixed, and a slide bracket 7 for supporting the slide frame 71 movably back and forth.
2 is provided. The slide frame 71 is provided with a sliding member 73 that is long in the front-rear direction at both left and right ends. The sliding member 73 has a long hole 74 formed in the longitudinal direction, and a handle 89 is attached inside.

The support member 62 of the ceiling 6 has a support plate 65 fixed from the support bracket 63 so as to rise from the support bracket 63 and protrude inward from the lower surface of a support pipe 64 extending forward. The slide bracket 72 is connected to the bolt 75 and the nut 7 via the rubber mount 66.
It is fixed at 6. A spacer 77, a washer 78, and a spring washer 79 are interposed between the slide bracket 72 and the nut 76, and the spacer 77 is fitted in the elongated hole 74 of the slide frame 71. The slide bracket 72 is guided to move back and forth on the slide bracket 72.

At a predetermined position of the slide frame 71, a front end positioning hole 82 and a rear end positioning hole 83 are provided, and a positioning pin 80 is mounted on the slide bracket 72 by a pin holding member 81. Or, after positioning at the rear end, the front end positioning hole 82,
Alternatively, a positioning pin 80 is inserted into the rear end positioning hole 83 and held by a spring 84.

The slide frame 71 is provided with a front end position fixing nut 85 and a rear end position fixing nut 86. After the slide frame 71 is positioned, a position fixing bolt 88 to which a collar 87 is attached is attached to a slide bracket. It is fixed by screwing from below 72.
Next, the operation of the canopy device 1 will be described.

In order to lower the canopy device 1 from the normal position in FIG. 1 to the storage position, first, the fixing bolt 11 is loosened and the retaining pin 10 is removed. Next, the fixing pin 9 is pulled out to release the fixing of the support 4, and in this state, the handrail 45 of the support 4 is pushed rearward to rotate the support 4 and the auxiliary support 5 backward. At this time, the column 4 and the auxiliary column 5 rotate while maintaining the parallel state, and the inclination of the ceiling 6 with respect to the vehicle body is kept constant without changing.

When the column 4 and the auxiliary column 5 are rotated backward, they are urged forward by the gas spring 14, so that rapid rotation can be prevented and the column 4 and the auxiliary column 5 can be safely moved. As shown in FIG. 10, when the support 4 and the auxiliary support 5 descend and reach the storage position, the stopper 12 abuts on the auxiliary support 4 and rotation is restricted. At this time, the through hole 4 of the support 4
Reference numeral 3 coincides with the through hole 32 of the pedestal 3, and the support pin 4 is fixed to the pedestal 3 by inserting the fixing pin 9 into the through holes 32 and 43 and inserting the retaining pin 10.

If the length of the ceiling portion 6 of the canopy device 1 in the front-rear direction is relatively longer than the length of the column 4 (the column length is relatively short), the column 4 is rotated backward. When the retreat distance of the ceiling 6 is short, the tip of the ceiling 6 is positioned above the driver's seat 2 as shown by a broken line in FIG. The space required for the operation cannot be secured.

Therefore, before rotating the support column 4 backward,
The position fixing bolt 88 is removed from the front end position fixing nut 85, the positioning pin 80 is pulled out from the front end positioning hole 82, the handle 89 is pushed backward, and the slide frame 71 is moved on the slide bracket 72 as shown in FIGS. After moving to the rear end, the positioning pin 80 is inserted into the rear end positioning hole 83, the position fixing bolt 88 is screwed into the rear end position fixing nut 86, and the ceiling 61 is fixed at the rear end position.

After that, when the column 4 is rotated rearward as described above, the ceiling 6 moves to the storage position behind the driver's seat 2 as shown by a solid line in FIG. The space necessary for boarding and performing operations can be secured. When returning from the storage position to the normal position, the procedure may be reversed. Since the support 4 and the auxiliary support 5 are urged forward by the gas spring 14 when rotating forward, a large force is not required to raise the ceiling 6.

In this canopy device 1, the ceiling 61 is moved rearward on the support 62 by the slide mechanism 7, and the column 4 and the auxiliary column 5 are rotated rearward, so that the ceiling 6 is placed above the driver's seat 2. Can be moved from the high normal position covering the vehicle to the low storage position behind the driver's seat 2, so there is no need to remove the ceiling 6 from the vehicle body when the height of the construction vehicle is limited. When the ceiling 6 is moved to the stowed position, the operator needs to get on the driver's seat 2 to perform the operation even if the length in the front-rear direction is relatively longer than the length of the column 5. Space is secured.

[0026]

As described above, the canopy device of the present invention does not need to be detached from the vehicle body when the height of the construction vehicle is restricted, and the length of the ceiling in the front-rear direction is equal to the length of the column. Even if it is relatively long, a space necessary for the operator to get on the driver's seat and perform the operation can be secured. Therefore, work efficiency during transportation and work can be improved, and costs can be reduced.

[Brief description of the drawings]

FIG. 1 is a side view of a canopy device showing an embodiment of the present invention.

FIG. 2 is a rear view of the canopy device.

FIG. 3 is a plan view of a slide mechanism.

FIG. 4 is a side view of the slide mechanism.

FIG. 5 is a sectional view taken along line AA of FIG. 3;

FIG. 6 is a plan view of the slide mechanism showing a state where the slide frame has moved to a rear end.

FIG. 7 is a side view of the slide mechanism showing a state where the slide frame has moved to the rear end.

FIG. 8 is a sectional view taken along line BB of FIG. 6;

FIG. 9 is a sectional view taken along the line CC of FIG. 7;

FIG. 10 is an explanatory diagram of the operation of the canopy device.

[Explanation of symbols]

 Reference Signs List 1 canopy device 2 driver's seat 3 pedestal 4 support 5 auxiliary support 6 ceiling 7 slide mechanism 9 fixing pin 10 retaining pin 11 fixing bolt 12 stopper 14 gas spring 61 ceiling 62 support 63 support bracket 64 support pipe 65 support plate 71 slide Frame 72 Slide bracket 73 Sliding member 74 Slotted hole 75 Bolt 77 Spacer 80 Positioning pin 88 Position fixing bolt

Claims (1)

[Claims] 1. A canopy device comprising: a support column and an auxiliary support column which are separated from each other in a front-rear direction, pivotally mounted on a vehicle body so as to be able to rotate back and forth, and a ceiling is pivotally attached to upper ends of the support column and the auxiliary support column; A canopy device provided with a slide mechanism for moving a ceiling back and forth on a support at a ceiling portion.