JP2977778B2 - Hatch turning mechanism for armored vehicles - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an armored vehicle. In particular, it relates to a turning mechanism of a hatch provided on an upper part of an armored vehicle.

[0002]

2. Description of the Related Art In an armored vehicle A as shown in FIG. 1, when a gun 2 is mounted on a cabin 1, a hatch 3 is opened upward and a turret 4 provided in front is used. However, it was not possible to shoot forward because of the inability to turn the turret, and not to shoot sideways or backwards.

As a mechanism for turning the turret 4, a ball bearing 5 shown in FIG. 2 is provided between a hatch and an outer frame. In this structure, when the inner race has a diameter of about 800 to 900 mm, the inner race and the outer race are fixed by fitting the outer periphery of the hatch or the inner periphery of the outer frame during assembly. Under the operating condition of the armored car's turret, it is exposed to severe weather and mud, etc., from the outside world, and no matter how much the seal is applied, the mud, etc., gets into the inside of the ball bearing 5 and the friction increases, resulting in poor movement. . For this reason, frequent maintenance is required. However, since the ball bearings 5 are fixed by fitting, the maintenance is difficult. In addition, since high precision is not required, the use of the ball bearing 5 itself is overwhelming.
It also becomes a specification. Further, the bearing is a standard product, has only a predetermined size, and has no degree of freedom in designing the hatch outer diameter.

[0004]

If the gun turns along the hatch provided on the upper part of the armored vehicle, it is possible to fire not only forward but also sideward or backward. The present invention provides a turret capable of turning the hatch to rotate the gun to protect the turret in any of the front, rear, left and right directions, and further improves the maintainability and design of the turning mechanism of the turret, and further increases the weight. The purpose is to alleviate the problem.

[0005]

[Means for Solving the Problems]

(1) An outer ring 19 having an L-shaped cross section is fixed to the cabin 1 and comprises a cylindrical fence 12 below the hatch 3. The inner ring 1 is fixed to the lower surface of the outer frame 7 secured to the cabin 1 by the sealing device 13.
4, and a cam shaft 16 having a rolling cam ring 15 attached to one end of the inner ring 14 is penetrated and fixed to the inner ring 14, and the rolling cam ring 15 can roll on the bottom of the outer ring 19. Placed on (2) An upward flange 20 is provided on the bottom inner edge of the outer ring 19.
To prevent the rolling cam wheel 15 from coming off. (3) A plurality of retainers 21 each having a J-shaped cross section are fixed on the inner circumference of the inner ring 14 to prevent the hatch 3 from coming off upward.

[0006]

FIG. 3 is an enlarged plan view when the present invention is applied to a hatch 3 on a cabin 1 shown in FIG. FIG. 4 is a side view. The hatch 3 can be opened and closed only from the inside by the handle 6 inside. The hatch 3 is attached to an outer frame 7 by a hinge 8 so as to be freely opened and closed.
The barrel of the gun 2 is rotatably supported on a yoke 9 by a pin 9a so as to be vertically rotatable. Further, the turning shaft 10 is rotatably supported on the outer frame 7 by a pin 10a so as to be rotatable left and right (horizontally).

FIG. 4 is a side view, and FIG. 5 is an enlarged view of the part indicated by the arrow A in FIG. In FIG. 5, the hatch 3 is fixed via a seal on a cylindrical fence 12 having a horizontal flange 11 at the top. An outer frame 7 is fixed to a lower portion of the fence 12, and a seal device 13 is provided at an outer edge of the outer frame 7. The outer frame 7 is in contact with the cabin 1 via the sealing device 13. A cylindrical inner ring 14 is fixed to the lower surface of the outer frame 7, and a cam shaft 16 having a rolling cam wheel 15 fixed to one end is fixed to the inner ring 14 by a washer 17 and a nut 18. The rolling cam wheel 15 rolls on the bottom of the outer ring 19 having an L-shaped cross section. The outer ring 19 has an upward flange 2 at its bottom end.
0 is provided. Further, the retainer 21 formed by bending a flat plate into a J-shape separately from the camshaft 16 is attached to the inner ring 14 at several places on the circumference by bolts and nuts (not shown).

In FIG. 5, the hatch 3 has an inner ring 14 at the lower part.
, The rolling cam wheel 15 fixed on the outer ring 19 can roll and turn. Further, an upward flange 20 provided at the end of the outer ring 19 prevents the outer ring 19 from coming off outward. The hatch 3 is prevented from coming off to the upper part by the retainer 21.

When assembling, the fence 1
2. The outer frame 7, the inner ring 14, and the rolling cam wheel 15 are fixed, and the rolling cam wheel 15 is placed on the outer ring 19 fixed to the cabin 1 side. Are fixed to the inner ring 14 at a constant interval in a positional relationship intersecting with the lower part of the inner ring. The disassembly is detached vertically by removing the retainer-21, so that the rotating part can be easily maintained.

In the above description, the armored vehicle has been described. However, it is a matter of course that the turning mechanism according to the present invention can be used for those provided with a hatch, such as a security boat, a snowmobile, a tank, a towing vehicle, and the like.

[0011]

According to the first aspect of the present invention, the hatch is formed integrally with the outer frame so that the outer ring provided on the cabin can be smoothly rotated by the rolling cam wheel. The degree of freedom has increased. According to the invention of claim 2, the rolling cam wheel can be smoothly operated without coming off in the circumferential direction.
According to the third aspect of the present invention, the hatch does not come off by the retainer, and the operability is improved.

Since the construction is simple, disassembly and assembly are very easy, and a turning mechanism with good maintainability can be obtained. Further, since there is no fitting like a conventional ball bearing, high machining accuracy is not required. Also, since the weight has been reduced,
Assembly and disassembly are improved, and turning when operating the gun is also easier.

[Brief description of the drawings]

FIG. 1 is a perspective view of a known armored vehicle.

FIG. 2 shows an example of a known hatch rotation device.

FIG. 3 is a plan view of a hatch according to the present invention.

FIG. 4 is a side view of the same.

FIG. 5 is a detailed view of a portion viewed from an arrow A in FIG. 4;

FIG. 6 shows another example of a method of mounting a gun.

FIG. 7 is a front view of FIG. 6;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cabin 2 Gun 3 Hatch 4 Gun seat 5 Ball bearing 6 Handle 7 Outer frame 8 Hinge 9 Yoke 10 Swing axis 11 Horizontal flange 12 Fence 13 Seal device 14 Inner ring 15 Rolling cam wheel 16 Camshaft 17 Washer 18 Nut 19 Outer ring 20 Upward flange 21 Retainer

Claims (3)

(57) [Claims] 1. An outer ring (19) having an L-shaped cross section is fixed to the cabin (1), comprising a cabin (1) and a hatch (3) rotatable on the cabin (1). The outer frame (7) is fixed to the lower part of the hatch (3) via a cylindrical fence (12) and sealed to the cabin (1) by a sealing device (13). An inner ring (14) is fixed to the lower surface, and a cam shaft (16) having a rolling cam ring (15) attached to one end thereof penetrates through the inner ring (14) and is fixed to the inner ring (14). A hatch turning mechanism for an armored vehicle, wherein a wheel (15) is rollably mounted on a bottom portion of the outer ring (19). 2. The hatch turning mechanism for an armored vehicle according to claim 1, wherein an upward flange (20) is provided on a bottom inner edge of the outer race (19) to prevent the rolling cam wheel (15) from coming off. 3. A retainer (21) having a J-shaped cross section is fixed to the inside of the inner ring (14) on the circumference to prevent the hatch (3) from coming off upward. 2. The turning mechanism of a hatch in the armored vehicle according to 2.