JPH05663A - Forward/backward movement device utilizing clamp mechanism - Google Patents

Abstract

PURPOSE:To enable moving of a truck on frames by clamping the frames. CONSTITUTION:A cylinder 3 is pivotaly supported in the forward/backward direction through a pin 4 on one end on the side surface of a truck 2 travelling on a frame 1, and striking plates 8,9 which hold the upper and the lower surfaces of the frame 1, a supporting arm 11 which extends toward the upper part between the striking plates 8,9 and a clamp mechanism 7 which is provided with a guide roll 12 on one end rolling on the lower surface of the frame 1 are suspended at the tip of a rod 5 of the cylinder 3 through the supporting arm 11.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a forward / backward moving device utilizing a clamp mechanism which is applied to, for example, a trolley which runs on an aggregate at a tank bottom of a crude oil tanker.

[0002]

2. Description of the Related Art When a trolley which travels on a slippery aggregate, for example, an aggregate at the bottom of a tank of a crude oil tanker, is driven by a trolley 02 on a T-shaped aggregate 01 at the bottom of the tank, as shown in FIG.
The drive wheel traveling is performed by driving the gear mechanism 07 mounted on the axle 05 of the drive wheel 04 by the hydraulic motor or the air motor 06.

[0003]

In the conventional driving wheel traveling, oil and sludge adhere to the surface of the aggregate in the tank, which makes it slippery, which is an environmental condition in which normal movement is difficult. In this case, it is conceivable to increase the weight of the dolly and increase the load applied to the wheels to increase the frictional force between the wheels and the aggregate to prevent slippage, but the moving dolly originally used in this type of tank is limited to the tank deck. It is necessary to reduce the weight so that it can be easily handled by introducing it through the opening, and the weight increase for increasing the frictional force is in the opposite direction.

The present invention was developed in order to solve such a problem, and uses air or hydraulic pressure as a driving source, and can reliably move even a slippery surface by a method independent of weight. The purpose is to provide a device.

[0005]

The structure of the present invention for achieving the above object will be described with reference to FIGS. 1 to 3 corresponding to the embodiments. The present invention is directed to a cart 2 traveling on an aggregate 1. Cylinders 3 are axially supported on the side faces in the front-rear direction via rear end pins 4, and at the tips of rods 5 of the cylinders 3, abutting plates 8 and 9 sandwiching the upper surface and the lower surface of the aggregate 1 in the front-rear direction, A clamp mechanism 7 having a support arm 11 extending upward between the corresponding plates 8 and 9 and a guide roll 12 rolling on the lower surface of the aggregate 1 at one end,
It is characterized in that it is suspended by the support arm 11.

[0006]

According to the present invention, since the clamp mechanism suspended at the rod tip of the cylinder by the above means is fixed or slid on the aggregate by the reciprocal movement of the rod,
By repeating this, the cart moves on the aggregate.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 1 to 3. Reference numeral 1 denotes an aggregate having a T-shaped cross section.
The carriage 2 is movably placed on the pair of. A hydraulic or pneumatic cylinder 3 is axially supported in the front-rear direction via a pin 4 at one end on both sides of the carriage 2, and a clamp mechanism 7 is attached to the tip of a rod 5 of the cylinder 3 via a pin 6. It is suspended. More specifically, the clamp mechanism 7 includes an upper contact plate 8 and an lower contact plate 9 that sandwich the upper and lower surfaces of the aggregate 1 in the front and rear direction, an inclined side plate 10 that connects these contact plates 8 and 9, and the inclined side plate 10. It is composed of a supporting arm 11 which is erected upright and a guide roll 12 which is provided below the upper contact plate 8 and rolls on the lower surface of the aggregate 1. The tip of the rod 5 is provided via the supporting arm 11. It was hung on the pin 6 of.

The operation will now be described with reference to FIG. 3. The state of FIG. 3a shows the state before the carriage 2 in which the rod 5 of the cylinder 3 is extended. From this state, as shown in FIG. When the rod 5 is contracted, a twisting force acts on the clamp mechanism 7 via the pin 6 to clamp the aggregate 1. Therefore, at the same time when the rod 5 contracts, the cylinder 3
Is pulled and the carriage 2 connected to the pin 4 moves in the direction of the arrow. In the state of FIG. 3c, when the rod 5 of the cylinder 3 is extended after the carriage 2 of FIG. 3b has moved, the pin 6 tries to push the support arm 11 of the clamp mechanism 7, and the clamp mechanism 7 is likely to be separated from the aggregate 1. Then, the guide roll 12 hits the aggregate 1 and slides in the direction in which the rod 5 extends.

The carriage 2 moves on the aggregate 1 by alternately repeating the states of 3a, 3b and 3c in FIG. Note that the inside of the carriage 2 is equipped with a series of wheel drive mechanisms as in the conventional case. Normally, the vehicle is driven by the wheel drive mechanism in the carriage, and when a wheel slip occurs, the motor load is detected and automatically. Switching to cylinder drive.

[0010]

As described above, according to the present invention, a cylinder is axially supported in the front-rear direction through a pin at one end on the side surface of a trolley that travels on the aggregate, and the top of the aggregate is attached to the rod tip of the cylinder. And a lower plate sandwiching the lower surface with the front and rear, a clamp mechanism having a support arm extending upward in the middle of the plate and a guide roll at one end that slides on the lower surface of the aggregate is suspended via the support arm. Because it is a thing, the clamp mechanism can clamp the slippery aggregate securely and move the trolley, and its driving is performed by the expansion and contraction movement of the cylinder using hydraulic or pneumatic pressure, so it can be used even in an explosive atmosphere At the same time, it has an effect that it can be moved easily without increasing the weight of the carriage.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention.

FIG. 2 is a partial side view of FIG.

FIG. 3 is an operation explanatory diagram.

FIG. 4 shows a conventional example in which a is a side view and b is a front view.

[Explanation of symbols]

 1 Aggregate 2 Cart 3 Cylinder 4 Pin 5 Rod 7 Clamp mechanism

Claims (1)

Claim: What is claimed is: 1. A cylinder is axially supported in the front-rear direction through a pin at one end on a side surface of a trolley that travels on the aggregate, and a rod tip of the cylinder is provided with an upper surface of the aggregate. A clamp mechanism having a contact plate that sandwiches the lower surface between the front and rear, a support arm that extends upward in the middle of the corresponding plate, and a guide roll at one end that rolls on the lower surface of the aggregate is suspended via the support arm. A forward / backward movement device utilizing a clamp mechanism characterized by the above.