JPH079886U - Transfer device - Google Patents

Abstract

(57) [Summary] [Purpose] To improve the workability and secure a work space for the transfer device. [Structure] A swivel arm 3 having a suspending portion 5 is horizontally swivelable around a vertical axis 15 provided on a base 2 fixed to an external structure, and between the swivel arm and the 3 base 2,
A stopper mechanism 11 including a continuous sliding surface 12 provided on one side of the entire circumference around the vertical axis 15 and a biasing means 13 of a sliding pad 14 provided on the other side is provided, and the stopper mechanism 11 is provided. The operation of the mechanism 11 biases the sliding pad 14 against the sliding surface 12 to stop the revolving arm 3 at an arbitrary revolving position with respect to the base 2.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a transfer device for suspending and moving a heavy object such as an engine as a transfer target.

[0002]

[Prior art]

 2. Description of the Related Art Conventionally, a transfer device having a structure shown in FIG. 2 has been used as a transfer device for suspending and transferring a transfer target object such as an engine. This transfer device 1 is provided with a base 2 suspended from a ceiling, a first arm 3 attached to a lower end of the base 2 so as to be horizontally rotatable, and a horizontal swing at a front end of the first arm 3. It has a second arm 4 attached thereto and a hook 5 attached to the lower end of the second arm 4. In addition, the hook 5 is provided with a handle 6 for an operator to operate, and by operating the handle 6, the first arm 3 and the second arm 4 are horizontally swiveled around their respective swivel axes. You can do it.

In such a transfer device 1, the transfer target 8 is suspended by the hook 5 at the lower end of the second arm 4 using the rope 7 or the like, and the first arm 3 and the second arm 3 are manually operated. By horizontally rotating the arms 4, it is possible to easily move the transfer target 8 in the horizontal direction.

[0004]

[Problems to be solved by the device]

 By the way, since the transfer object 8 of the transfer device 1 is a heavy object such as an engine, in the transfer operation, the first arm is caused by the inertia of the transfer object 8 suspended by the hook 5. The horizontal pivoting movements of 3 and the second arm 4 are going to be continued. Therefore, in order to stop this, the operator needs to exert a force against the turning motion on the handle 6. Further, when the transfer device 1 is not used, the arms 3 and 4 must be securely held outside the range of movement of the worker so as not to interfere with the movement of the worker.

However, the heavier the transfer target 8 and the faster the turning speed thereof, the greater the force required to stop the transfer target 8 becomes. Is large and the workability is reduced. Further, even when the operator mistakenly recognizes that the object has once stopped, the transfer target 8 may turn at a low speed and stop within the operating range of the operator.

The present invention has been made in view of the above-mentioned circumstances, and it is possible to reliably stop the turning operation of the turning arm to improve workability, secure a work space, and the like. The purpose is to provide a device.

[0007]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention proposes the following two means. A first means is a swivel arm provided with a base fixed to an external structure, and a suspending portion attached to the base so as to be horizontally swivelable about a vertical axis and suspending an object to be transferred at a tip thereof. And a stopper mechanism that is provided between the swivel arm and the base and fixes relative rotation of the both, and the stopper mechanism is provided on one side of the swivel arm or the base. A sliding surface continuously arranged around the entire vertical axis is provided, and a biasing means provided on the other side for biasing the sliding pad toward the sliding surface is provided. We propose a transfer device.

A second means is the first means, wherein the swivel arm is composed of a plurality of arm portions rotatably connected about a vertical axis centered in parallel with the vertical axis of the base. , A transfer device in which a stopper mechanism is provided between adjacent arm portions is proposed.

[0009]

[Action]

 According to the transfer device according to the first means of the present invention, the transfer object suspended by the suspension part horizontally pivots the swivel arm provided rotatably around the vertical axis of the base. To move horizontally. Then, by operating the stopper mechanism provided between the base and the swing arm, the relative rotational movement between the base and the swing arm is fixed. The stopper mechanism presses the sliding pad against the sliding surface on one side of the base or swivel arm by the urging means on the other side, making use of the sliding friction between the two and the base and swivel arm. Fix and so that they do not rotate relative to each other. In this case, the sliding surface is continuously arranged around the entire circumference around the vertical axis. Therefore, by activating the biasing means at any pivot position of the pivot arm, It becomes possible to fix the swivel arm.

Further, according to the transfer device of the second means of the present invention, since the revolving arm is composed of a plurality of arm portions rotatably mounted around the horizontal axis, each arm portion is revolved horizontally. As a result, the suspension part is moved to an arbitrary position. Even in this case, by operating the stopper mechanism provided between the adjacent arm portions, the respective arm portions are fixed to each other, and the suspension portion for suspending the transferred object is stopped at an arbitrary position, Alternatively, it is possible to maintain each arm portion and the suspension portion in a stopped state at any position.

[0011]

【Example】

 An embodiment of the transfer device according to the present invention will be described below with reference to FIG. In FIG. 1, reference numeral 10 is a transfer device, reference numerals 11 and 17 are stopper mechanisms, 12 and 18 are sliding surfaces, 13 and 19 are air cylinders (urging means), and 14 and 20 are sliding pads. 22 is a swivel axis (vertical axis), 16 and 23 are brackets, 21 is a disk-shaped member, 24 is switch means, 25 is a cable, 26 is a solenoid valve, 27 is an air tube, and 28 is a swivel arm. In the present embodiment, the same parts as those of the conventional example shown in FIG. 2 are designated by the same reference numerals to simplify the description.

The transfer device 10 of the present embodiment is also a device for transferring a heavy object 8 (object to be transferred) such as an engine, and is a base mounted in a suspended state on a ceiling (external structure). 2, a first arm 3 (arm portion) attached to the lower end of the base 2 so as to be horizontally pivotable, and a second arm 4 (arm portion) attached to the tip of the first arm 3 so as to be horizontally pivotable. The third embodiment is common to the conventional example in that the lower arm of the second arm 4 is provided with a hook 5 (suspension portion). However, the transfer device 10 of the present embodiment is provided with the stopper mechanisms 11 and 17 between the base 2 and the first arm 3 and between the first arm 3 and the second arm 4, This is different from the conventional example.

The stopper mechanism 11 provided between the base 2 and the first arm 3 includes a sliding surface 12 provided on the base 2 and an air cylinder 13 (biasing means) provided on the first arm 3. And a sliding pad 14 attached to the tip of the rod 13a of the air cylinder 13 and brought into close contact with the sliding surface 12.

The sliding surface 12 is provided on the outer periphery of the lower end portion of the base 2, and is, for example, continuously equidistant from the turning axis 15 (vertical axis) of the first arm 3 over the entire circumference. It is composed of a cylindrical surface. Further, the air cylinder 13 is fixed to the first arm 3 by a bracket 16 with the tip of the rod 13a directed toward the turning axis 15. When the rod 13a is retracted, a gap is formed between the sliding pad 14 arranged at the tip of the rod 13a and the sliding surface 12, and the rod 13a is protruded. The moving pad 14 and the sliding surface 12 are arranged at a position where they are brought into close contact with each other with a constant pressure.

The stopper mechanism 17 provided between the first arm 3 and the second arm 4 has a sliding surface 18 provided on the second arm 4 and an air cylinder provided on the first arm 3. 19 and a sliding pad 20 attached to the tip of the rod 19a of the air cylinder 19 and brought into close contact with the sliding surface 18.

The sliding surface 18 is constituted by, for example, the upper surface of a horizontal disk-shaped member 21 fixed to the first arm 3. The disk-shaped member 21 is formed in a continuous brim shape around the turning axis 22 (vertical axis) of the second arm 4 over the entire circumference. The air cylinder 19 is fixed to the tip of the first arm 3 by a bracket 23 so that the rod 19a can be projected vertically downward. Then, with the rod 19a retracted, a gap is formed between the sliding pad 20 arranged at the tip of the rod 19a and the sliding surface 18, and with the rod 19a protruding, the sliding pad 20 is arranged at a position where it can be brought into close contact with the sliding surface 18 with a constant pressure.

Further, a handle 6 for operating the transfer device 10 is provided on the hook 5 provided at the lower end of the second arm 4, and the stopper mechanism 11.17 is provided in the vicinity of the handle 6. Switch means 24 are provided for actuation. The switch means 24 can operate the solenoid valve 26 by, for example, disconnecting and connecting a power source guided by a cable 25 from the ceiling via the base 2. As a result, the air pressure introduced from the air pressure supply source (not shown) to the air cylinders 13 and 19 by the air tube 27 is supplied and stopped, and the rods 13a and 19a of the air cylinders 13 and 19 are advanced and retracted, so that the base 2 and the first arm are moved. 3, the relative rotational movement of the first arm 3 and the second arm 4 can be fixed.

According to the transfer device 10 configured as described above, the operator operates the handle 6 attached to the hook 5 to move the first arm 3 and the second arm 4 horizontally and vertically. The transfer target 8 can be moved to an arbitrary position by operating and using the rope 7 or the like to suspend the transfer target 8 on the hook 5. Then, by switching the switch means 24 in a state in which the revolving arm 28 is revolved to the position where the transfer object 8 is to be arranged, the respective stopper mechanisms 11 and 17 are operated and the base 2 and the first arm 3 The relative rotation of the first arm 3 and the second arm 4 can be fixed, and the transfer target 8 can be stopped.

Here, the sliding surfaces 12 and 18 of each stopper mechanism 11 and 17 are formed as a cylindrical surface or an upper surface of a disk-shaped member 21 that is continuous over the entire circumference around the turning axis 15 and 22. Since the sliding pads 14 and 20 can be pressed at any position in the circumferential direction, the transfer target 8 can be stopped at an arbitrary position and can be maintained in a stopped state. Therefore, the worker can easily stop the transfer target object 8 by the stopper mechanism 11, 17 without applying a force to stop the transfer target object 8 that tries to continue moving due to inertia. As a result, the workability of the transfer operation of the transfer target 8 can be improved.

The transfer device 10 according to the present invention can employ the following techniques. Instead of the revolving arm 28 composed of two arm parts 3 and 4, adopt one revolving arm 28 or a revolving arm 28 composed of three or more arm parts. Although the urging means 13 and 19 are air cylinders, other arbitrary urging means capable of advancing and retracting the sliding pad 14 and 20 toward the sliding surface 12 and 18 are adopted instead of the air cylinder. thing. In the stopper mechanism 11 between the base 2 and the first arm 3, the sliding surface 12 is a cylindrical surface, but instead of this, it is formed continuously around the vertical axis 15 over the entire circumference. Use any other sliding surface. Although the sliding surface 12 is provided on the base 2, the air cylinder 13 of the first arm 3 should be replaced. In the stopper mechanism 17 between the first arm 3 and the second arm 4, the sliding surface 18 is the upper surface of the disc-shaped member 21, but instead of this, any other sliding surface may be adopted. . Although the sliding surface 18 is provided on the second arm 4, it should be replaced with the air cylinder 19 of the first arm 3.

[0021]

As described in detail above, the transfer device according to the first means of the present invention is a swivel having a suspending portion around a vertical axis provided on a base fixed to an external structure. An arm is installed so that it can be horizontally swung, and between the swivel arm and the base, a continuous sliding surface is provided on one side of the arm around the vertical axis and a continuous sliding surface on the other side. Since the stopper mechanism consisting of the biasing means is provided, the relative rotation between the base and the swivel arm is fixed by operating the stopper mechanism while the swivel arm is placed at an arbitrary swivel position. The transferred object can be stopped at any position. Therefore, it is possible to reduce the burden on the operator required to stop the transferred object and improve the workability, and at the same time, keep each arm in the stopped state at any position to ensure the work space for the operator. The effect of being able to secure is produced. Also, in the transfer device according to the second means of the present invention, the swivel arm has a plurality of arm portions rotatably connected to each other about a vertical axis arranged at a parallel interval to the vertical axis of the base. Since the stopper mechanism is arranged between the adjacent arm portions, each arm portion is swiveled to increase the degree of freedom in the arrangement of the suspension portion, and to cope with various transfer operations. There is an effect that can be.

[Brief description of drawings]

FIG. 1 is a side view showing an embodiment of a transfer device according to the present invention.

FIG. 2 is a perspective view showing a conventional example of a transfer device.

[Explanation of symbols]

 2 Base 3 1st arm (arm part) 4 2nd arm (arm part) 5 Hook (suspension part) 8 Transfer object 10 Transfer device 11/17 Stopper mechanism 12/18 Sliding surface 13/19 Energizing Means 14/20 Sliding pad 16/22 Vertical axis 28 Swiveling arm

Claims (2)

[Scope of utility model registration request] 1. A base fixed to an external structure, and a swivel arm provided on the base so as to be horizontally swivelable about a vertical axis and provided at a tip end thereof with a suspending portion for suspending a transfer object. A stopper mechanism provided between the swivel arm and the base for fixing relative rotation between the swivel arm and the base, the stopper mechanism being provided on one side of the swivel arm or the base A sliding surface continuously arranged around the entire circumference, and a biasing means that is provided on the other side and biases the sliding pad toward the sliding surface. Transfer device. 2. A swivel arm is composed of a plurality of arm portions rotatably connected about a vertical axis arranged at a parallel interval to a vertical axis of a base, and a stopper mechanism is provided between adjacent arm sections. The transfer device according to claim 1, wherein the transfer devices are provided respectively.