JPS6231695A - Car lifting gear - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a vehicle lift device, and particularly to a vehicle lift device that easily and easily lifts vehicles such as low-floor trucks and buses when repairing them. The present invention relates to a vehicle lift device which enables safe lifting and also has a lift height sufficiently high for easy repair.

[Technical Background of the Invention and Problems thereof] Lift devices for lifting automobiles when repairing them have been provided in various markets.

These lift devices are generally divided into light lift devices for passenger cars and smaller, and heavy lift devices for trucks, buses, and the like. For example, the lightweight lifting device includes:
Although they are small like screw jacks, they often have a small lifting weight and are weak in strength. In addition, heavy lifting equipment is
It must be strong in terms of strength and have a large lifting capacity, which inevitably results in a large size.

However, current trucks, buses, and the like are mostly low-floor vehicles in order to facilitate the loading and unloading of cargo and to facilitate the boarding and alighting of passengers.

Therefore, when a vehicle has a low floor, the minimum ground clearance is naturally lowered accordingly, and this has caused a problem in that the weekday lift device cannot be inserted under the floor during repairs or the like. However, even if we try to use a compact lightweight lift device, it is impossible in terms of strength and lifting weight, and there is an urgent need for the development of a weekday lift device that can handle low-floor vehicles. It was rare.

[Purpose of the Invention] Therefore, in view of the above-mentioned points, the present invention provides a method that can be easily inserted under the floor of a low-floor vehicle such as a truck or bus. It was created with the aim of providing a harpoon that can be lifted easily and safely and has a sufficiently high lifting height.

[Summary of the Invention] In order to achieve the above object, the present invention provides a lift frame in which one longitudinal end of the frame is a vehicle lift part and the other end is equipped with a wheel; The cross frame is pivotably supported at approximately the middle portion in the longitudinal direction of the lift frame so as to be able to intersect with the lift frame, and the cross frame has a wheel attached to the other end, and one end is swingably attached to the lift frame. a pressing cylinder that presses the one end of the cross frame in a direction that narrows the crossing angle between the wheels of the lift frame and the wheels of the crossing frame with a pressing shaft protruding from the other end, and a pressing cylinder that prevents this crossing angle from expanding. This consists of a stopper that regulates and controls the pressure, and an operating section that appropriately controls the pushing and pulling of the pressure shaft of the pressure cylinder, the regulation by the stopper, and its release.

[Embodiment of the Invention] An embodiment of the invention will be described below with reference to the drawings.

That is, the reference numeral 1 shown in the figure is a lift frame, which is framed in a rectangular shape.

One longitudinal end of this lift frame 1 serves as a vehicle lift section 2 for lifting the automobile C, and two wheels 3 are attached to the other end.

On the other hand, reference numeral 4 denotes a cross frame, which is framed in a rectangular shape and has a width that can be inserted into the lift frame 1, and the vicinity of one end 5 in the longitudinal direction is placed inside the approximately intermediate portion 6 in the longitudinal direction of the lift frame 1. It is pivoted so that it can swing freely, and
Similar to the lift frame 1, two wheels 7 are attached to the other end.

One end of a hydraulic press cylinder 8 is swingably attached to the other end of the lift frame 1 in the longitudinal direction, and a press shaft 9 protrudes from the other end of the press cylinder 8. The tip end is swingably connected to the one end 5 of the cross frame 4. Also, the pressure cylinder 8
The press shaft 9 is operated to push and pull by an air pump 32 for oil circulation provided at the other end of the lift frame 1, and this press shaft 9 presses one end 5 of the cross frame 4. This moves the lift frame 1 and the cross frame 4 in a direction in which the cross angle between the wheels 3 of the lift frame 1 and the wheels 7 of the cross frame 4 becomes narrower.

As a result, as shown in FIG. 1, the lift frame 1 and the cross frame 4 are initially in a state of lying down in a substantially horizontal straight line, but the wheels 3 of the lift frame 1 and the wheels 7 of the cross frame 4 The press shaft 9 moves the lift frame 1 and the cross frame 4 in the direction in which the cross angle between the lift frame 1 and the cross frame 4 narrows.
When one end 5 of the cross frame 4 is pressed by the
The other end and the other end of the cross frame 4 come closer to each other, and the lift frame 1 and the cross frame 4 form a substantially cross-shaped shape, and the vehicle lift section 2 rises, making it possible to increase the lifting height.

Also, at this time, the vehicle lift section 2 is swingably provided at one end of the lift frame 1, and the vehicle lift section 2 and the vicinity of the one end 5 of the cross frame 4 are connected to each other by a sliding joint 11 by an auxiliary rod 10.
The vehicle contact surface 12 of the vehicle lift section 2 is formed to always face upward due to the principle of the link mechanism, regardless of whether the vehicle lift section 2 is raised. Moreover, as shown in FIG. 5, this vehicle contact surface 12 has
Two attachments of various types can be attached, for example, for standard buses, trucks, vehicles of 4 tons or less, large vehicles, etc. By replacing the attachment 29 each time, a suitable vehicle contact surface 12 can be formed. It is something. In this case, various types of attachments 29 are available, including those that can be attached by hooking onto the vehicle contact surface 12 and those whose height can be set appropriately using a height adjustment bin 30, for example. One end of a stopper ratchet rod 13 is swingably attached to approximately the middle portion of the cross frame 4.
The other end of this stopper ratchet rod 13 is slidably attached inside the lift frame 1, and the ratchet pawl 14
and a stopper 15 that restricts the crossing angle from widening by being locked with the stopper ratchet rod 13.
That is.

Furthermore, a total of two wheels 16 are formed, one on the image body side of the approximately intermediate portion 6 in the longitudinal direction of the lift frame 1, so that the lift frame 1 and the cross frame 4 are laid down as shown in FIG. When the condition is set, each wheel 3.
7, it is attached so as to be in contact with the ground, and is useful for obtaining smooth movement when moving the whole thing, especially when inserting it under the floor of a truck, bus, etc. Further, a brake 17 is provided near the wheel 16, and the wheel 16 is constantly braked by something like a spring (not shown), and the wheel 16 can be rotated by releasing it with a brake release handle 21 described later. This is to ensure safety during movement by adjusting the brake release handle 21. Further, a rotation stopper 31 is attached near the wheel 16, and is fixed to stop the rotation of the wheel 16 when not in use, thereby eliminating movement due to its own weight.

On the other hand, the pressing cylinder 8. The operation of the ratchet pawl 14 on the stopper ratchet rod 13, the operation of the brake 17, etc. are all performed by the operating section 18.

As shown in FIGS. 3 and 4, this operation section 18 is formed in a substantially U-shape, and both open ends thereof are connected to the lift frame 1.
An operation frame 19 is swingably attached to the other end, and a press cylinder operation rod 20 is attached to this operation frame 19.
, a stopper release lever 28 for releasing the stopper 15, a brake release handle 21, and an operating frame angle adjustment lever 22.

The operation frame 19 is attached to the lift frame 1 so as to be able to swing freely, but an angle adjustment plate 2 is used to stop and fix the swing at an appropriate angle that is easy to use with respect to the lift frame 1.
3 is provided. This angle adjustment plate 23 is fixed to the other end of the lift frame 1 and has a plurality of small holes 24 bored at appropriate intervals in an arcuate curved surface, and is operated by the operation frame angle adjustment lever 22. When the locking rod 25, which is slid along the frame 19 and enters and exits the small hole 24, is inserted into the small hole 24, the operating frame 19 is locked and fixed to the lift frame 1, and the operating frame angle is adjusted. When the locking rod 25 is pulled out from the small hole 24 by operating the lever 22, the lift frame 1 is removed.
On the other hand, the operation frame 19 can swing freely.

Also, when the press cylinder operating rod 20 is operated to move in one direction, the two wires 27 are connected via the lever rod 26.
operates to push out the push shaft 9 of the push cylinder 8 to raise the vehicle lift section 2 of the lift frame 1, and when the push cylinder operating rod 20 is moved in the other direction, the push cylinder 8 is pushed out.
The vehicle lift part 2 of the lift frame 1 is operated so that the pressing pressure is removed and the vehicle lift part 2 of the lift frame 1 is lowered.

For example, when lifting a vehicle such as a truck or bus, an attachment 29 suitable for the vehicle is first set. Next, the brake release handle 21 is grasped and activated, and the brake 17 is released while the entire body is moved and inserted under the floor of a truck, bus, or the like.

Therefore, by operating the press cylinder 8 using the press cylinder operating rod 20, the vehicle lift section 2 is lifted, and brought into contact with the differential, front axle, etc. of the vehicle, and the vehicle is lifted. Then, when the vehicle is lifted to a suitable height for repair, the press cylinder operating rod 20 is returned to the vehicle lift section 2 stopping position to repair the vehicle. When the repair is completed, the stopper 15 is released by the stopper release lever 28, and the pressing cylinder operating rod 20 is moved in the opposite direction to the lifting operation, thereby eliminating the pressing pressure of the pressing cylinder 8, lowering the vehicle lift section 2, and handling it from under the floor of the vehicle. The repair will then be completed.

Therefore, its operability is extremely excellent, and when the lift frame 1 and the cross frame 4 are completely laid down, that is, when the vehicle lift section 2 is in the lowest position, the lift frame 1 and the cross frame 4 are in the lowest position. Since it is formed to intersect with the cross frame 4, the planar shapes are different and do not overlap, so we added two attachments that slightly protrude to the height of the lift frame 1 or the cross frame 4. Since the height is only a moderate height, it will never become unusable for vehicles with low minimum ground clearance such as low-floor buses and trucks.Furthermore, when the vehicle is lifted, the stopper 15 is always used to prevent the vehicle from moving. Since the direction in which the lift section 2 descends is restrained, safety in repair work can be ensured.

In addition, when the lift frame 1 and the cross frame 4 are completely laid down, the press cylinder 8 is formed so that it is installed so that the press shaft 9 is directed slightly upward rather than horizontally. be.

[Effects of the Invention] The present invention configured as described above has a lift frame 1 in which one longitudinal end of the frame is the vehicle lift part 2 and a wheel 3 is attached to the other end, and the vicinity of one longitudinal end 5 of the frame. is pivotally supported in a substantially intermediate portion 6 in the longitudinal direction of the lift frame 1 so as to be able to intersect with the lift frame 1,
The one end 5 of the cross frame 4 is connected to the wheel of the lift frame 1 by a cross frame 4 with a wheel 7 attached to the other end, and a pressing shaft 9 that is swingably attached to the lift frame 1 at one end and protrudes from the other end. 3 and the wheels 7 of the cross frame 4.
, a stopper 15 that restricts this intersecting angle from expanding, and an operating section 18 that appropriately controls the pushing and pulling of the pressing shaft 9 of the pressing cylinder 8, the restriction by the stopper 15, and its release. frame 1
Since the cross frame 4 and the cross frame 4 are framed together, they have very high strength.The lift frame 1 is pivoted in the vicinity of one end 5 of the cross frame 4 at a substantially intermediate portion 6 in the longitudinal direction of the lift frame 1. Since the lift frame 1 and the cross frame 4 are made to be able to intersect with each other, if the lift frame 1 and the cross frame 4 are completely laid down, the lift frame 1 and the cross frame 4 are made to be able to intersect with each other as described above. The longitudinal frames do not overlap at all, and it can be easily inserted under the floor of a vehicle with a low minimum ground clearance, such as a low-floor truck or bus.

Since the lift frame 1 is framed, the press cylinder 8 can be stored inside it, and the press cylinder 8 hardly gets in the way when it is inserted under the floor of the low-floor vehicle.

Furthermore, when the pressing shaft 9 of the pressing cylinder 8 presses one end 5 of the cross frame 4 as described above, the lift frame 1 and the cross frame 4 form a substantially inverted shape, and the vehicle lift portion 2 rises. It is possible to lift a vehicle,
It also became possible to increase the lift height. At that time, since the stopper 15 is provided, even if the pressing pressure of the pressing cylinder 8 is lost during lifting of the vehicle, the vehicle can be stopped in that state. There was no accident of 2 descending and it was safe.

These operations such as lifting the vehicle and the above-mentioned restriction and release of the stopper 15 can be performed all at once using the operation section 18, which is very convenient and can be easily operated by one person.

As explained above, according to the present invention, even vehicles with low minimum ground clearance and large weight, such as low-floor trucks and buses, can be used safely and easily, and the lift height is also large. It has various excellent effects such as easy operation and excellent operability.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, in which Fig. 1 is a front view before lifting, Fig. 2 is a front view when lifted, Fig. 3 is a plan view, and Fig. 4 is a perspective view of the operating section. , FIG. 5 is a perspective view of the automobile lift section. C...Automobile, 1...Lift frame, 2...Vehicle lift part, 3...
・・Wheel, 4・Cross frame, 5・One end, 6・
...Longitudinal direction substantially middle portion, 7...Wheel, 8...Press cylinder, 9...Press shaft, 10...Auxiliary rod, 11
... Slide joint, 12 ... Vehicle contact surface, 13 ... Stopper ratchet rod, 14 ... Ratchet pawl, 15 ...
・Stopper, 16...wheel, 17...brake,
18... Operating unit, one... Operating frame, 20... Pressing cylinder operating rod, 21... Brake release handle, 22
...Operation frame angle adjustment lever, 23...Angle adjustment plate,
24... Small hole, 25... Locking rod, 26... Thread lever, 27... Wire, 28... Stopper release lever, 29... Attachment, 30... Height adjustment pin,
31... Rotation stopper, 32... Air pump.

Claims (1)

[Claims] 1. One longitudinal end of the frame is a vehicle lift part, and the other end is a lift frame with wheels attached, and the vicinity of one longitudinal end of the frame is a pivot that can swing freely at approximately the middle part of the lift frame in the longitudinal direction. a cross frame supported and formed to be able to intersect with the lift frame, and with a wheel attached to the other end;
A pressing cylinder whose one end is swingably attached to the lift frame and which uses a pressing shaft protruding from the other end to press the one end of the cross frame in a direction that narrows the crossing angle between the wheels of the lift frame and the wheels of the cross frame. A vehicle lift device comprising: a stopper that restricts the intersecting angle from expanding; and an operating section that appropriately controls the pushing and pulling of the pressing shaft of the pressing cylinder, the restriction by the stopper, and its release.