JPH0733610U - Wire saw drive - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a wire saw drive device that can easily change directions. [Structure] The auxiliary wheels 54 are composed of a pair arranged in front of and behind the rear wheel shaft 15a, and are respectively attached to a pair of mounting plates 56 which are swingably supported by the rear wheel shaft 15a. Each auxiliary wheel 54 is rotatably supported on the lower surface side of the mounting plate 56 in a vertical plane, and is rotatably mounted in a plane orthogonal to this. The cylinder 6 is provided between the pair of stays 56, which are installed on the upper surface of the mounting plate 56 so as to face each other.
0 and the coil spring 62 are provided side by side. Coil spring 6
2 urges the attachment plates 56 in directions toward each other. When the cylinder 60 is driven, the mounting plate 56 rotates downward against the biasing force of the coil spring 62, the auxiliary wheel 54 bottoms on the running surface, and the rear wheel 15 separates from the inner bottom surface of the rail 50. The distance between the rear wheels 15 is set within the height of the side surface of the rail 50.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a wire saw driving device, and more particularly to a technique for improving the driving operability of the wire saw driving device.

[0002]

[Prior art]

 A wire saw method is known as a method applied to the dismantling of concrete structures and the cutting of stones, and an example thereof is disclosed in Japanese Patent Publication No. 3-53426. The wire saw used in this type of construction has a structure in which a sintered body in which diamond particles are mixed is attached to the wire. Keep running and cut the object.

A drive device for a wire saw is disclosed, for example, in Japanese Unexamined Patent Publication No. 4-350263, and the drive device disclosed in this publication is a dolly having front and rear wheels traveling on a rail. It has an engine provided above and a main sheave rotatably driven by this engine. An endless wire saw wound around the outer periphery of the object to be cut is wound around the main sheave.

However, the wire saw driving device having such a configuration has been pointed out to have the technical problems described below.

[0005]

[Problems to be solved by the device]

 That is, in the wire saw driving device described above, the front wheel and the rear wheel are provided in pairs, and each pair of wheels can rotate along the rails, so that linear movement in the front-back direction is possible. , It was very difficult to change direction to other directions. For this reason, for example, when the wire saw driving device is stored in a warehouse or the like, it is hung and moved by a crane or the like, and it has been desired to easily change the traveling direction.

In addition, this type of wire saw driving device is not always used in a flat place, and for example, a cutting operation is also performed in a place where there is a deviation in the inclination angle or direction between rails. Be seen. However, if the wire saw driving device is installed in such a state, there is a risk that one of the wheels will run off the rail, and there was a problem in the stability of the cutting work.

The present invention has been made in view of the above-mentioned conventional problems, and an object thereof is a wire saw that can easily change the traveling direction and can also secure the stability of cutting work. It is to provide a drive device.

[0008]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention provides a main sheave around which an endless wire saw is wound, a power source for rotationally driving the main sheave, and a carriage on which the main sheave and the power source are mounted. In a wire saw driving device having front and rear wheels arranged on the lower surface of this trolley, auxiliary wheels rotatable in two orthogonal planes are attached to either one of the front and rear wheels. A drive mechanism is provided which, when the auxiliary wheel reaches the running surface, drives either the front wheel or the rear wheel on the side to which the auxiliary wheel is attached so as to separate upward from the running surface. It is characterized by that.

The front and rear wheels move along concave rails, and the amount by which the front and rear wheels of the drive mechanism are separated upward can be set within the height of the side surface of the rail.

[0010]

[Action]

 According to the wire saw drive device having the above-described configuration, auxiliary wheels that are rotatable in two planes that are directly intersecting with each other are attached to either the front wheel or the rear wheel, and when the auxiliary wheels land on the running surface. A drive mechanism is provided to drive either the front wheel or the rear wheel on the side to which the auxiliary wheel is attached so as to be separated upward from the traveling surface. Therefore, the drive mechanism is operated as necessary. And the bogie of the wire saw drive device is supported at three points by one of the front and rear wheels and the auxiliary wheel, and the auxiliary wheel can rotate in two planes orthogonal to each other, for example, in the vertical and horizontal planes. As it is, it is easy to change the direction of the dolly.

Further, according to the second aspect of the present invention, the amount of upward separation of either the front wheel or the rear wheel is set within the height of the side surface of the concave rail. When the wheels are driven, the bogie is supported at three points, the effect of the inclination angle between the rails can be eliminated, and the wheels on the side separated upward from the running surface move along the side surface of the rail. Therefore, this can be used as a guide for the truck.

[0012]

【Example】

 Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. 1 to 5 show an embodiment of a wire saw driving device according to the present invention. The wire saw driving device shown in the figure includes a main sheave 10 around which an endless wire saw is wound, and an engine 12 (driving source) that drives the main sheave 10 to rotate.

The main sheave 10 is rotatably installed on the front end side of a carriage 16 having front and rear wheels 14 and 15. The engine 12 is fixedly supported on the rear end side of the bogie 16, and a torque converter 18 whose slip amount changes according to the load is attached to the rotation shaft of the engine 12. In the torque converter 18 configured as described above, when the object to be cut is cut by the wire saw, if the cutting resistance of the wire saw increases significantly, the slip amount increases and the cutting of the wire saw can be prevented. .

A power transmission mechanism 20 is interposed between the rotary shaft 10 a of the main sheave 10 and the pulley 18 a of the torque converter 18. The power transmission mechanism 20 of this embodiment includes a transmission 24, an intermediate pulley 26, and a plurality of belts 28, 28a. The input pulley 24a of the transmission 24 and the pulley 18 of the torque converter 18 are connected by a belt 28 wound around them, and the output pulley 24b of the transmission 24 and the intermediate pulley 26 are wound around them. They are connected by a rotated belt 28a.

In front of the main sheave 10, a pair of guide sheaves 30 around which a wire saw is wound are rotatably provided on the same vertical plane. Further, on the carriage 16, a receiver 34 for controlling the engine 12 such as starting, stopping, restarting and adjusting the rotation speed is installed. The transmitter 36, which sends a signal to the receiver 34, is placed at a place distant from the truck 16 and includes an ON / OFF switch, a starter motor start switch of the engine 12, a rotation speed increase / decrease switch of the engine 12, and an O of the truck 16. An N, OFF switch, a traveling speed increasing / decreasing switch of the truck 16 and the like are provided.

On the other hand, below the carriage 16, a pair of rails 50 along which the front and rear wheels 14, 15 move are attached in parallel. The rail 50 has a concave cross section, and has a width that allows the wheels 14 and 15 to be loosely fitted therein. One front wheel 14 and one rear wheel 15 are provided, and are fixed to both ends of a front wheel shaft 14a and a rear wheel shaft 15a that are rotatably supported on the lower surface side of the carriage 16.

In this embodiment, the driving force is applied only to the front wheels 14, and the differential gear mechanism 52 is provided at the center of the front wheel shaft 14a. Is connected to the engine 12 via a clutch, a speed reducer and the like (not shown). The rear wheel 15 is of a non-driving type, and an auxiliary wheel 54 is installed on the center of the rear wheel shaft 15a.

As shown in detail in FIGS. 4 and 5, the auxiliary wheels 54 are composed of a pair of wheels arranged in front of and behind the rear wheel shaft 15a, and a pair of pivotally supported by the rear wheel shaft 15a. Each is attached to the attachment plate 56. Each auxiliary wheel 54 is rotatably supported on the lower surface side of the mounting plate 56 in a vertical plane, and is rotatably mounted in a plane orthogonal to this.

The pair of mounting plates 56 extend in the radial direction of the rear wheel shaft 15a and are swingably attached to the outer periphery of the rear wheel shaft 15a. A cylinder 60 and a coil spring 62 are provided side by side between a pair of stays 58 that are installed opposite to each other on the upper surface of each mounting plate 56. The coil panel 62 urges the pair of mounting plates 56 in the direction of approaching each other. The cylinder 60 constitutes a main part of the drive mechanism of the auxiliary wheel 54, and when the plunger is expanded or contracted by hydraulic pressure or pneumatic pressure, when the cylinder 60 is in the inoperative state, as shown in FIG. The mounting plates 56 are located close to each other by the urging force of the coil spring 62. In this state, the rear wheels 15 contact the inner bottom surface of the rail 50, and the pair of auxiliary wheels 54 move upward from the traveling surface. It is separated.

On the other hand, when the expansion / contraction plunger is extended by driving the cylinder 60, the mounting plate 56 rotates downward against the urging force of the coil spring 62, and the auxiliary wheel 54 bottoms on the traveling surface. The rear wheel 15 is separated from the inner bottom surface of the rail 50. In this case, the amount of upward separation of the rear wheel 15 is set within the height of the side surface of the rail 50. Now, in the wire saw driving device configured as described above, the engine 12 is started when a signal is sent from the transmitter 36 to the receiver 34 by remote control. When the engine 12 is started, the wire saw wound around the main sheave 10 travels and moves, and the travel movement cuts an object to be cut. At this time, as the cutting progresses, the carriage 16 is moved rearward, and by such an operation, the wire saw is maintained in a predetermined tension state.

By the way, in such a cutting process, for example, when there is a deviation in the inclination direction or the angle between the pair of rails 50 and one of the wheels 14 and 15 is separated from the rail 50, the cylinder 60 is driven. To be done. When the cylinder 60 is driven, the pair of auxiliary wheels 54 bottoms on the running surface, the rear wheels 15 are separated from the inner bottom surface of the rail 50, and the carriage 16 is supported by the pair of front wheels 14 and the auxiliary wheels 54 at three points. Therefore, the influence of the inclination angle between the rails 50 can be eliminated.

In this case, since the amount of separation of the rear wheel 15 on the side separated upward from the inner bottom surface of the rail 50 is set within the height of the side surface of the rail 50, when the carriage 16 is moved. Since the rear wheel 15 comes into contact with the side surface of the rail 50 and its moving direction is regulated, the rear wheel 15 can be used for guiding when the carriage 16 is moved. Further, when the device is stored in a garage or the like, the cylinder 60 is driven in the same manner as described above, and the auxiliary wheels 54 are set to the bottom. By this operation, the dolly 16 is supported by the pair of front wheels 14 and the auxiliary wheels 54 at three points, and the auxiliary wheels 54 are configured to be rotatable without two planes orthogonal to each other. By adjusting the, you can easily turn it in any direction, which makes the storage work very easy.

In the above embodiment, the auxiliary wheel 54 is provided on the non-driving side rear wheel 15 side. However, when the driving side wheel is the rear wheel, the auxiliary wheel 54 is the front wheel. It is also possible to provide it on the 14 side. In the above embodiment, the auxiliary wheel 54 is directly attached to the rear wheel shaft 15a of the rear wheel 15, but the auxiliary wheel 54 does not necessarily have to be directly attached to the shaft 15a. It can be provided separately.

Further, although the engine 12 is used as the rotary drive source of the main sheave 10 in the above-mentioned embodiment, the present invention is not limited to this, and for example, hydraulic or electric power is used. It may be a driving electric motor or the like.

[0025]

[Effect of device]

 As described above in detail in the embodiments, according to the wire saw driving device of the present invention, it is possible to easily change the direction of a relatively heavy device, and it is very easy to store the device in a garage or the like. Become. Further, according to the configuration of claim 2, even when there is a difference in the inclination angle between the laid rails, the device can be moved in a stable state.

[Brief description of drawings]

FIG. 1 is a top view showing an embodiment of a wire saw driving device according to the present invention.

FIG. 2 is a side view of the drive unit.

FIG. 3 is a rear view of the drive unit.

FIG. 4 is a side view showing a non-actuated state of auxiliary wheels of the drive system.

FIG. 5 is a side view of an operating state of auxiliary wheels of the drive system.

[Explanation of symbols]

 10 Main Sheave 12 Engine 14 Front Wheel 15 Rear Wheel 16 Bogie 50 Rail 52 Differential Gear Mechanism 54 Auxiliary Wheel 56 Mounting Plate 60 Cylinder 62 Coil Spring

Claims (2)

[Scope of utility model registration request] 1. A main sheave around which an endless wire saw is wound, a power source for rotating the main sheave, a carriage on which the main sheave and the power source are mounted, and a lower surface of the carriage. In the wire saw driving device having the front and rear wheels, an auxiliary wheel rotatable in two orthogonal planes is attached to one of the front and rear wheels, and the auxiliary wheel is attached to the traveling surface. A wire saw drive device comprising a drive mechanism for driving one of the front wheel and the rear wheel on the side to which the auxiliary wheel is attached when the vehicle bottoms out so as to separate upward from the traveling surface. 2. The front and rear wheels move along concave rails, and the amount by which the front and rear wheels of the drive mechanism are separated above each other is set within a height of a side surface of the rail. The wire saw drive device according to claim 1.