JPH0623813U - Top opener for lorries - Google Patents

Abstract

(57) [Summary] [Objective] In a hood opening / closing device for a freight vehicle that opens and closes the hood by towing the wire rope, absorbs the extension of the wire rope that grows with use and gives the wire rope an appropriate tension. [Composition] A pulley 6a axially attached to the front and rear of the tilt 1,
6b and a pair of moving pulleys 8 pivotally mounted on a base 7 having a tail rib attached thereto and movably supported by guide rails. A wire rope 14 is attached to the pulleys 6a and 6b from the outside and a moving pulley 8 is attached. After being hung from the inside, the one end is connected to the tensioner 11 and the other end is connected to the winder 13, and the slack due to the elongation of the wire rope 14 is absorbed by the winding of the winder 13.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hood opening / closing device for a truck, and more particularly to a hood opening / closing device of a type in which opening and closing of the hood is performed by power.

[0002]

[Prior art]

 As a device for opening and closing this seed hood, it has a wire rope that can be hung on pulleys placed before and after the tilt, and a winding drum that winds the wire rope.The motor drives the winding drum to move the wire rope. , A type that opens and closes the hood via a hood bone that is connected to a wire rope is known.

[0003]

[Problems to be solved by the device]

 In the hood opening / closing device of the type described above using the wire rope, the wire rope is inevitably stretched by the tension during winding, and gradually loosens with use, impairing the smooth opening / closing of the hood. Or the wire rope comes off the pool.

In order to solve this problem, an attempt has been made to absorb the elongation of the wire rope by supporting the pulley so that it can move in a certain section and urging it in one direction by a spring. In addition to being limited, if a strong spring is used, the tension of the wire rope at the beginning of use will increase, and a large amount of power will be required for winding. Conversely, if a weak spring is used, the amount of absorption will decrease. .

An object of the present invention is to provide a hood opening / closing device that can moderate the tension of the wire rope even if the wire rope extends.

[0006]

[Means for solving the problem]

 The hood opening / closing device of the present invention is a hood device for a freight vehicle in which a hood bone movably supported on a rail laid in the longitudinal direction of a tilt is extensiblely connected by a link and a hood is placed on the hood bone. , A pair of pulleys that are axially attached to the front and rear of the tilt, a drive device that rotationally drives one of the pair of pulleys, and a support that is capable of advancing and retracting in one direction along the rails and are connected to the hood bone. A pair of movable pulleys, a wire rope that is hung on the pair of pulleys from the outside, then hung on the pair of movable pulleys from the inside, and one end of which is connected to the machine frame, and a winder that is connected to the wire rope. Each end of the wire rope is connected to the winder, or only one end is connected to the winder and the other end is fixed to the machine frame or a spring is attached to the machine frame. Are connected through.

[0007]

[Action]

 Since each end of the wire rope is fixed, when the pulley is driven to rotate in one direction by the drive device, the wire rope on the take-in side is drawn in while pulling the moving pulley in one direction and moves to the pay-out side. The amount required to move the pulley is fed out, and the top bone connected to the moving pulley is moved in one direction together with the moving pulley.

When the pulley is rotationally driven in the opposite direction, the movable pulley and the hood bone move in the opposite direction. If the wire rope becomes loose due to use, the looseness of the wire rope is taken up by the winder. The winder can be driven manually by rotating the handle, or can be powered by a motor. The winder may be fixed at the time of winding so that the wound wire rope will not be unwound, but it is preferable to install a ratchet mechanism, a unidirectional rotating clutch or other nick feed mechanism. It is desirable to prevent it from rotating in the rewinding direction.

When one end of the wire rope is connected to the machine frame via a spring, this allows some extension of the wire rope to be absorbed.

[0010]

【Example】

 FIG. 1 shows a hood device for a freight vehicle. An inverted U shape in which a runner (not shown) provided at a leg end on a rail 2 laid along a tilt 1 is movably connected to the rail. It includes a hood bone 3, a link mechanism 4 that connects the hood bones 3 in a stretchable manner, and a hood 5 that is placed on the hood bone.

FIG. 2 shows an opening / closing device of the above-mentioned hood device, which includes a pair of pulleys 6a and 6b axially attached to the front and rear of the tilt 1 and an pedestal 7 to which a rear hood 3 is attached. A pair of moving pulleys 8 movably supported by guide rails (not shown) integral with the rails 2 and the pulleys 6a and 6b are hung from the outside, and the moving pulley 8 is hung from the inside. A wire rope 14 connected to a tensioner 11 attached to the machine frame via a pulley 9 and the other end to a winder 13 via a guide pulley 12, a motor 15, a speed reducer 16 and a chain transmission. It is composed of a rotation driving device 18 for a pulley 6a composed of a device 17, and when the motor 15 is rotationally driven in the forward or reverse direction, the hood bone 3 at the rear end moves forward and backward together with the base 7, and the hood opens and closes. There is.

As shown in FIG. 3, the tensioner 11 is slidably supported by a bearing 22 fixed to a machine frame 21, and a rod 23 having a wire rope 14 connected to a projecting end of the machine frame 21. It comprises a nut 24 screwed to the rod end, a coil spring 25 wound around a rod 23 between the bearing 22 and biasing the rod 23 to the right in FIG. 3, and a cylindrical cover 26. It is designed to absorb some slack in the wire rope 14.

When the tensioner 11 cannot absorb the slack, a handle (not shown) is attached to the winder 13, and the handle is rotated to wind the wire rope 14 by the winder 13 to absorb the slack. Although not shown, this winder is designed so that it can be rotated only in one direction by the ratchet, that is, in the direction in which the wire rope 14 is wound, and in the direction in which the wire rope 14 is unwound. Since it does not, the wire rope will not loosen when rewound.

[0014]

[Effect of device]

 The present invention is configured as described above and has the following effects. According to the hood opening / closing device of claim 1, when the wire rope is slackened due to stretching, the slack can be wound up by the winder to absorb the slack, and the tension of the wire rope can be moderated. You can

When the one end of the wire rope is connected to the machine frame via the spring as in the apparatus according to the second aspect, it is possible to absorb some slack in the wire rope. By connecting both ends of the wire rope to the winder as in the apparatus according to the third aspect, the slack of the wire rope can be absorbed from either side. If the winding machine is provided with the chopping feed mechanism as in the apparatus according to claim 4, the fixing operation becomes unnecessary only by operating the winding machine in the winding direction, and the wire rope can be rewound and loosened. There is no.

[Brief description of drawings]

FIG. 1 is a side view of a hood device mounted on a truck.

FIG. 2 is a schematic view of a hood opening / closing device.

FIG. 3 is a sectional view of a tensioner.

[Explanation of symbols]

6a, 6b ... Pulley 7 ...
Platform 8: Moving pulley 11 ...
・ Tensioner 13 ・ ・ ・ Winding machine 14 ・ ・
・ Wire rope 15 ・ ・ ・ Motor

Claims (4)

[Scope of utility model registration request] 1. A hood device for a freight vehicle in which a hood bone that is movably supported on a rail laid in the longitudinal direction of a tilt is extensiblely connected by a link, and a hood is covered on the hood bone. A pair of pulleys that are axially attached to the front and rear, a drive device that rotates and drives one of the pair of pulleys, and a pair of movable pulleys that are supported so as to be able to move back and forth in one direction along the rails and that are connected to the top bone. , After being hung on the pair of pulleys from the outside, hung on the pair of moving pulleys from the inside,
A hood opening / closing device including a wire rope whose one end is connected to the machine frame and a winder whose other end is connected. 2. The hood opening / closing device according to claim 1, wherein one end of the wire rope is connected to the machine frame via a spring. 3. The hood opening / closing device according to claim 1, wherein one end of the wire rope is connected to a winder instead of being connected to a machine frame. 4. The hood opening / closing device according to claim 1, wherein the winder is adapted to rotate only in the winding direction by the hacking mechanism.