JPH0715627U - Crawler control device for multi-connection frame conveyor - Google Patents

Abstract

(57) [Summary] [Purpose] To control the crawlers of a multi-connection frame conveyor to facilitate the longitudinal movement. [Structure] Crawler angle detecting means A is provided at the center of turning of a crawler frame 5 of a multi-connection frame conveyor. A refraction angle detecting means B for detecting an angle in the horizontal direction of the frame unit 1 connected by the universal joint 2 is provided, and the left and right crawlers 6 are stopped or operated by the both detecting means A and B, so that the multi-connection frame conveyor runs vertically. To enable efficient driving.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention mainly relates to a control device for controlling a crawler supporting each frame unit when vertically moving a multi-connection frame conveyor used for soil removal and landfill so that each frame unit is not always bent.

[0002]

[Prior art]

 The multi-connection frame conveyor described in Japanese Examined Patent Publication No. 57-17811 forms a conveyor machine body by connecting a large number of frame units divided into unit lengths in series by universal joints, and transporting goods on this machine body. A conveyor belt for receiving or discharging a load is movably suspended, and for each frame unit, a crawler frame having right and left crawlers for supporting the frame is provided to be rotatable.

When the multi-connection conveyor as described above is run in the vertical direction, that is, in the vertical direction, the crawler frames provided in the respective frame units are fixed in the straight traveling direction, and the respective crawlers are driven at a constant speed.

In such a longitudinal operation, if the conditions of the ground where the crawlers are in contact are different even when trying to operate the left and right crawlers at a constant speed, a difference in the propulsive force between the left and right crawlers will occur, resulting in multi-connection. A plurality of crawler devices installed along the entire length of the conveyor travels to the right or left as the travels. For this reason, the connection point of each frame unit starts refracting and its refraction angle becomes the second largest, and finally the longitudinal operation becomes impossible.

In such a state, the longitudinal operation is stopped, the chlorabrame of the bent portion is turned by 90 ° C. to make it sideways, and then the crawler is operated to correct the direction, and then the longitudinal direction is made. Restart line operation.

[0006]

[Problems to be solved by the device]

 In the conventional multi-connection frame conveyor, since the vertical operation is stopped and the repair work is performed as described above, when a large number of locations need to be repaired, the repair work requires a great deal of labor and time. For this reason, there is a problem that the time required for the longitudinal operation becomes very long.

An object of the present invention is to solve the problems of the conventional crawler device as described above, and when the frame unit starts refracting during the longitudinal operation and the refraction angle reaches the limit, the correct position is automatically set. It is to provide a crawler controller adapted to be modified.

[0008]

[Means for Solving the Problems]

 In order to solve the above problems, the present invention detects that the center line of the frame unit and the traveling direction of the crawler frame are aligned with the center of rotation of each crower frame of the multi-connection frame conveyor. Crawler angle detection means is provided, and at the connecting portion of the front and rear frame units, refraction angle detection means for detecting the horizontal refraction angle of the front and rear frames is provided. When detecting the, a device having a control means that acts to correct the refraction by stopping the operation of one of the crawlers is adopted.

[0009]

[Action]

 In normal longitudinal operation, the crawler frame provided in each frame unit is integrated with the frame unit, and the left and right crawlers operate at a constant speed, so the multi-connection frame conveyor runs in a straight line. .

Now, if the state of the ground contact surfaces of the left and right crawlers of the front frame unit becomes different, the rotation speed of the left and right crawlers becomes different, and the frame unit starts moving to the right or left.

Now, for example, when the front frame unit starts to turn to the left in the traveling direction and a predetermined limit switch of the refraction angle detecting means operates, the crawler on the left side in the traveling direction of the front frame unit stops for a certain period of time. This causes the crawler frame to turn slightly to the left, so if the crawlers on both sides continue to operate, the refracted frame unit will be corrected to be a straight line. When the center limit switch acts in this way, the crawler on the right side stops, and the crawler on the left side starts turning the front frame unit toward the right side in the traveling direction. Drive the crawler.

At this time, the moving direction of the crawler and the center line of the frame unit coincide with each other. By repeating this action, it is possible to automatically correct the traveling direction of the crawler that is oriented in the left-right direction and continue vertical operation.

[0013]

【Example】

 In the embodiment shown in FIGS. 1 to 4, C is an example of a multi-connection frame conveyor, and a plurality of frame units 1 are connected by a universal joint 2 to form a conveyor machine. Although not shown, pulleys are provided at the outer ends of the frame units 1 at both ends, and the folded portions at both ends of the endless conveyor belt 3 are engaged with the pulleys.

Although not shown in the drawings, a plurality of carrier rollers and a return roller are arranged in each frame unit 1 to support the carrier side and the return side of the belt 3, and a predetermined frame unit has a belt 3 and a return roller. Drive means is provided. A crawler support base 4 is fixed to the lower part of the middle portion of each frame unit 1, and a crawler frame 5 is mounted on the support base 4 by a supporting main shaft 7 so as to be rotatable.

Crawler wheels are rotatably mounted on both sides of both ends of the crawler frame 5, and the folded portions at both ends of the left and right crawlers 6 are engaged with the respective wheels, so that the left and right wheels are separately provided. Drive means for driving and rotating forward and reverse is provided.

Although not shown, the crawler frame 5 is provided with movable rollers that receive the upper and lower portions of the middle portion of the crawler 6. Reference numeral 8 in FIG. 2 denotes a detection cam provided on the crawler frame 5, the outer periphery of which is an arc shape concentric with the main shaft 7, and a recess 9 is provided at the center thereof to provide a limit switch 10 fixed to the frame unit 1. Crawler angle detecting means A is provided so that the working piece is engaged with and disengaged from the recess 9.

Further, the refraction angle detecting means B is as shown in detail in FIGS. 3 and 4, and a detection cam 11 is attached near one end of the frame unit 1 so that it can be horizontally swung by a shaft 12. The outer circumference of the cam 11 is formed in an arc shape concentric with the shaft 12, and a recess 13 is provided at the center.

Further, the frame unit 1 is provided with three limit switches 14, 15, and 16. Both ends of a connecting rod 19 are connected by universal joints to a projecting piece 17 provided on the side of the shaft 12 mounting portion of the cam 11 and a bracket 18 provided on the adjacent frame unit 1.

FIGS. 1 to 3 show a state in which each frame unit 1 is in a straight line and extends in the direction of the arrow. At this time, as shown in FIG. 2, the action piece of the limit switch 10 of the crawler angle detecting means A engages with the recess 9 of the cam 8 to indicate that the frame unit 1 and the crawler 6 are parallel to each other. .

Further, as shown in FIG. 3, since the working piece of the central limit switch 15 is engaged with the recess 13 of the cam 11 of the refraction angle detecting means, the frame unit 1 before and after this portion is You can see that it is straight and not bent.

Now, a difference occurs in the rotational speeds of the left and right crawlers belonging to the front portion, that is, the left side of FIG. 4, that is, the front frame unit 1, and, for example, the front frame unit 1 moves toward the traveling direction. When the limit switch 14 of the refraction angle detecting means B operates, the crawler 6 on the left side is stopped for a certain period of time in the traveling direction of the front frame unit 1.

As a result, the front crawler frame 5 is slightly leftward, and when the crawlers 6 on both sides are driven as they are, the refracted front and rear frame units are corrected to be straight.

When the central limit switch 15 is actuated in this way, the right crawler 6 of the front frame unit 1 is stopped, and the front crawler 6 starts to rotate the front frame unit 1 to the right side in the traveling direction, and When the limit switch 10 of the angle detecting means A operates, the crawlers 6 on both sides are driven.

At this time, the traveling direction of the crawler 6 and the center line of the frame unit 1 coincide with each other. By repeating this action, it is possible to automatically correct the traveling direction of the crawler 6 which is oriented in the left-right direction and continue the longitudinal operation.

[0025]

【effect】

 According to this invention, each frame unit is provided with the crawler angle detecting means for detecting the angle of the crawler frame with respect to the frame unit and the refraction angle detecting means for detecting the refraction angle of the front and rear frame units as described above. Since the left and right crawlers are controlled by this detection means, when the front and rear frame units are about to bend during vertical operation, they are quickly detected and corrected. Can be done efficiently.

[Brief description of drawings]

FIG. 1 is a partially cutaway plan view of an embodiment.

FIG. 2 is an enlarged plan view of the above.

FIG. 3 is an enlarged plan view of the refraction angle detecting means.

FIG. 4 is an enlarged plan view of the same operation.

[Explanation of symbols]

 C Multi-connection frame conveyor A Crawler angle detection means B Bending angle detection means 1 Frame unit 2 Universal joint 3 Conveyor belt 5 Crawler frame 6 Crawler 8 Detection cam 9 Recess 10 Limit switch 11 Detection cam 13 Recess 14 Limit switch 15 Limit switch 16 Limit switch

Claims (1)

[Scope of utility model registration request] 1. A conveyor machine body is constructed by connecting a plurality of frame units divided into unit lengths in series by a universal joint, and a conveyor belt for receiving or discharging a load is suspended on the machine body so that the conveyor belt can travel. , In a multi-connection frame conveyor in which a crawler frame having right and left crawlers for supporting each frame unit on its left and right sides is rotatably provided, the center of the frame unit is located at the center of rotation of each crawler frame. A crawler angle detecting means for detecting that the line and the traveling direction of the crawler frame are coincident with each other is provided, and a refraction angle detecting means for detecting a horizontal refraction angle of the front and rear frames is provided at a connecting portion of the front and rear frame units. When a refraction limit of this refraction angle detection means and its refraction direction are detected, the operation of one crawler is stopped. A crawler controller for a multi-joint frame conveyor having control means operative to stop and correct refraction.