JPS5824281B2 - Truck wheel attachment/detachment device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a wheel attachment/detachment device that is convenient for attaching and detaching truck wheels (hereinafter simply referred to as wheels). This invention relates to a truck wheel attachment/detachment device in which two wheels, an inner and an outer wheel, can be attached and detached with -.

Trucks that are handled relatively harshly often suffer from punctures and therefore require frequent wheel replacement.

In addition, in order to use trucks economically, it is necessary to replace the right and left wheels from time to time, the front wheels and the rear wheels, and even the outer and inner wheels of double-wheeled trucks. A wise method is to average out the degree of wear by replacing them.

By the way, trucks are generally used harshly and are often used in salty and humid places such as sandy beaches and swamps, so the nuts and screws that attach the wheels become clogged with dust.

Therefore, an extremely large amount of force is required to remove the nut, but conventionally, a box spanner with a handle is often used, so it is difficult to turn the nut. Since the nut is in the opposite position, a long box spanner must be used, and rotational force cannot be generated without support. You can often see people finally changing tires.

Recently, nut attaching and detaching machines that use compressed air and those that can switch between slow speeds are rarely seen, but they are not useful for attaching and detaching nuts in inconvenient locations.

The present invention was developed in view of the above-mentioned difficulties of the conventional method, and its objectives are to make it easy to install, to simply turn the nut, and to use the sliding two-stage spanner for hexagonal and square nuts. The purpose of the present invention is to provide a wheel attachment/detachment device that is convenient for handling.

That is, the device of the present invention has a pipe-shaped support arm that movably accommodates a rod for advancing and retracting a hook, which has an adhesive ring to the wheel surface and a surface plate having a plurality of spanner guide/support holes. The frame is connected to the wheel surface and can be switched between a hexagonal box and a square box by sliding, and the wheel can be attached and detached by using a box spanner with a ratchet wheel that can be rotated left and right. The present invention will be explained based on the following embodiment drawings. Fig. 1 is a front view of a truck wheel attachment/detaching device showing an embodiment of the present invention, and Fig. 2 is a front view of the device. A plan view, FIG. 3 is an enlarged sectional view taken along line A-A in FIG. 1, FIG. 4 is an enlarged view of a portion of FIG. Figure 6 is a sectional view taken along line B-B in Figure 5, Figure 7 is a sectional view taken along line CC in Figure 5, and Figure 8 is a view taken along arrow Q in Figure 5. The face plate is made of a thin metal plate with box spanner guide/support holes 1A that match the position and number of wheel mounting bolts, and round rods are arranged in a ring around the outer periphery to improve the texture. The bent edge ring 2 is attached by welding or the like.

3 is an adhesive ring made by bending a pipe into an annular shape and is attached to the wheel surface, and a supporting metal fitting 11 of a gourd 9 that is hooked into a hole provided in the wheel is protruded from the outside of the ring.

4 is a threaded rod for rotating the hook 9 about the pin 12, and 5 is a bundle for rotation thereof.

Reference numeral 6 denotes a pipe-shaped support arm in which the surface plate 1 and the adhesive ring 3 are connected by welding or the like, and a rod for rotating the hooking claw 9 passes through the hollow part of the support arm. They are provided at multiple locations (three locations in the embodiment) around the entire circumference of the ring 3.

7 is a universal joint, and 8 is a rod connected to the universal joint 7, to the tip of which a rear end of a hook 9 is movably connected by a pin 10.

13 is a nut attached to the surface plate 1 by welding etc.
A threaded portion of the threaded rod 4 is screwed into this.

Therefore, when the threaded rod 4 is rotated by the bundle 5, the rod 8 moves back and forth through the universal joint 7, and the hooking pawl 9 rotates about the pin 12 and engages with the hole edge of the wheel, thereby tightening the entire frame. is attached and fixed to the hole surface (the concave surface of the outer wheel 30 when attaching and detaching the outer wheel, and the convex surface of the inner wheel 29 when attaching and detaching the inner wheel).

(See the chain diagram in FIG. 2) 14 is a box spanner, and a hexagonal box 14A of an appropriate depth is formed at the tip thereof.

A square box 15 is slidably inserted into the hexagonal box, and a square hole 15A is formed in the center thereof.

When using the hexagonal box 14A, the rectangular box 15 is moved to the left by the pin 18, but even at this time, the hexagonal box 14A and the rectangular box 15 overlap by the L dimension, and the rectangular box 15 overlaps with the hexagonal box 1.
It never deviates from 4A.

16 is a round bar connected to the rear end of the square box 15;
Reference numeral 17 denotes a ring rotatably fitted around the outer periphery of the round bar 16, on which a pin 18 is screwed, as shown in FIG.
An annular groove 16A is formed on the outer periphery of the round bar 16 at the tip end thereof.
By projecting inward, the ring 17 can freely rotate relative to the round bar 16, but its axial movement is restricted.

Therefore, if the pin 18 is placed in the position shown in FIG. 5 and pushed down in the direction shown by arrow 18A to the end, the square box 15
The front end surface of the hexagonal box 14A is retracted and the hexagonal box 14A is ready for use.

Furthermore, if the pin 18 is moved to the right within the elongated hole 14B, the square box 15 will slide to the right within the hexagonal box 14A, and its end surface will be flush with the end surface 14C of the hexagonal box. is ready for use.

18C and 19 are side plates constituting the bundle, and a ratchet wheel 20 and a gourd 26 that engages with the ratchet wheel 20 are provided between the side plates.

27 is a rod-shaped bundle attached to the rear ends of the side plates 18C and 19; 28 is a push screw for fixing the gourd 26 to the core shaft of the handle 25; by rotating the handle 25, the gourd 26 is reversed; The rotation direction of the ratchet wheel 20 can be switched.

21 is a shaft fixed to the rear end of the box spanner 14;
A ratchet wheel 20 is attached, and the tip thereof is provided with a square head 21A to which a fast rotation bundle can be attached.

Reference numeral 22 denotes a retaining ring around the shaft 21, for example, a pin or the like can be used to secure the shaft 21.
Fixed to.

23 is a bolt for fixing the ends of both side plates, 23A is a nut, and 24 is a spacing piece for ensuring a gap between both side plates.

Further, numeral 31 shown by a chain line in FIG. 2 is a mounting nut for the outer wheel 30, and 32 is the shape of the head of an inner wheel mounting nut.

In the embodiments of the box spanner with ratchet wheel shown in FIGS. 5 to 8, switching and opening of the gourd 26 is performed by rotating the handle 25 to which the gourd is fixed. For example, it is of course possible to attach a leaf spring or the like to elastically operate or fix the switching and opening position of the gourd 26, and the hooking claw device shown in FIGS. In this embodiment, the melon 9 is engaged with the hole edge of the wheel by rotating the pin 12 of the support fitting 11 fixed to the adhesive ring 3 as a fulcrum, but the present invention is not limited to this. During formation, a substantially L-shaped metal fitting with a screw hole provided at the rear end may be moved forward and backward along the inner hole of the arm 6 with a screw.

The wheel attachment/detachment device according to the present invention is constructed as described above, and the case where this device is used to attach/detach a double wheel as shown by the chain line in FIG. 2 will now be described.

As is well known, in the case of a double wheel, a cap nut 32 is usually attached to the end of a bolt screwed onto the axle plate, with a square head at the tip, a thread on the outer diameter, and a tapered flange at the rear end.
screw the inner wheel 29 through the tapered collar.
First, attach the outer wheel 30, then screw the hexagonal nut 31 into the thread on the outer diameter of the cap nut, and clamp the wheel by a part of the taper formed on the tip surface of the hexagonal nut. The inner and outer wheels are firmly attached.

Therefore, in order to remove the double wheel, first, a frame as shown in FIG. After touching the adhesive ring 3 to the surface of the wheel, making sure that the claw 9 is inserted.

Rotate the frame a little counterclockwise, hook the tip of the hook 9 on the hole edge, and rotate the screw 4 with the bundle 5 to engage the hook 9 with the wheel 30 and move the frame outward. It is fixed to the wheel 30.

Next, insert the box spanner 14 part of the box spanner with a ratchet wheel through the guide/support hole 1A provided in the surface plate 1, first engage the hexagonal nut, and then attach the gourd 26 to the ratchet wheel 20 so that the handle 25 The hexagonal nut is loosened by engaging the rod-shaped bundle 27 and rotating it by hand.

Of course, in this case, the square box 15 is retracted by the pin 18.

After the hexagonal nut is loosened by several bundle operations, the gourd 26 is released from the ratchet wheel 20,
If a box spanner (not shown) with a handle (square hole) is engaged with the square head 21A provided at the outer end of the shaft 21 and the box spanner 14 is rotated, the hexagonal nut can be quickly pulled out.

By removing all the hexagonal nuts in this manner, the outer wheel 30 can be easily removed.

Also, to remove the inner wheel 29, use a box spanner.
Move the pin 18 provided in 14 to the right and move it to the square box 15.
Extend the square box to the tip surface and attach this square box to the inner wheel 2.
It is sufficient to engage the square head of the cap nut fixing the cap nut 9 and operate in the same manner as described above.

Also, when attaching the wheel to the axle plate, the operation is performed in the opposite manner to when removing it, that is, the ratchet wheel's gourd is engaged in the opposite direction and rotated in the opposite direction.

In this case, the inventor has tested that since the hook 9 is firmly engaged with the wheel, there is no problem in leaving it as it is.

As described above, in the present invention, after a frame body consisting of a surface plate provided with a plurality of spanner guide/support holes, an adhesive ring, and an arm is attached to the wheel surface, the frame body is slid in two stages from the guide/support holes. Since the wheel mounting nut is installed and removed by inserting a type box spanner, even if the box spanner is long, it is supported by the guide/support hole in the surface plate, so it does not bend and is easy to install. Natsuto can be attached and detached.

Therefore, it is easy to operate even by one person, and the wheel can be attached and detached in a short time.The frame is also lightweight, making it easy to attach to the wheel.Furthermore, the two-stage sliding box spanner Since it is possible to switch between hexagonal and square boxes, there are practical effects such as the ability to remove the inner and outer wheels with a single spanner, and the practical benefits of implementing the present invention are extremely large.

[Brief explanation of drawings]

Fig. 1 is a front view of a truck wheel attachment/detaching device showing one embodiment of the present invention, Fig. 2 is a plan view thereof, Fig. 3 is an enlarged sectional view taken along line A-A in Fig. FIG. 5 is a side view of the box spanner according to the present invention, FIG. 6 is a sectional view taken along line B-B in FIG. 5, and FIG. The CC sectional view and FIG. 8 are views taken along arrow Q in FIG. Explanation of codes, 1...Top plate, 1 person...
Box spanner guide and support hole, 2...Wire ring,
3...Adhesive ring, 4...Threaded rod, 5...
... Rotating bundle, 6... Support arm,
9... Hook claw, 14... Box spanner - 1l4A... Hexagonal box, 15...
...Square box, 17...Ring, 18...
...Pin, 18C519...Side plate, 20...
... Ratchet wheel, 21 ... Axis, 25
...Pattern, 26...Melon, 2γ...
- Rod-shaped bundle.

Claims (1)

[Claims] 1 An adhesive ring 3 formed by bending a pipe into an annular shape and attached to the wheel surface, a box spanner guide/support hole provided opposite the wheel mounting nut, and a screw for advancing and retracting the hooking pawl 9 that engages with the wheel. A surface plate 1 having a protruding rod 4;
a pipe-shaped support arm 6 into which the threaded rod is inserted;
a box-shaped frame formed by connecting a plurality of boxes by welding, a box spanner 14 that can be switched between a hexagonal box and a square box by sliding; It is equipped with a box spanner consisting of a bundle with a ratchet wheel that can be freely rotated left and right and opened by switching the melon, and a plurality of hook claws 9 movably protruding outward from the adhesive ring are attached to the wheel surface. After engaging the hole edge and tightening and fixing by rotating the threaded rod 4, insert the box spanner through the guide/support hole of the surface plate 1 and rotate it to tighten the wheel nut. A truck wheel attachment/detachment device characterized by being detachable.