JPH0229097Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field The present application relates to a control device for a working machine for a spinning machine and a transport vehicle, and detects abnormal tension in a multicore cord stretched between a working machine that starts on one side and a transport vehicle. This is what I am trying to do.

Conventional technology There are two types of working machines for spinning machines, such as a splicing machine, which continuously patrols between spinning machines during spinning to monitor troubles and repairs them each time a trouble occurs, and a doffing machine, which continuously patrols between the spinning machines during spinning to monitor troubles and repair them each time a trouble occurs. There are two types of machines that launch at predetermined intervals toward the machine to be worked on and perform the work. Work equipment belonging to the latter category, such as a doffing machine, is loaded onto a transport vehicle, and after being transported by the transport vehicle to the side of the machine to be worked on, power is supplied from the transport vehicle through a multi-core cord, and the work equipment is carried out by the transport vehicle. On the outward journey towards the target machine, the cord is pulled out from the take-up reel provided on the transport vehicle, and on the outward journey towards the transport vehicle and back, the cord is pulled out by the cord take-up reel. The machine travels while being wound up, is loaded onto a transport vehicle again, and is transported to the next machine to be worked on.

The present application relates to a control device for working machines and transport vehicles that belong to the latter of the above two types, and is intended to prevent accidents such as tripping due to loosening of multi-core cords and accidents such as cutting of multi-core cords due to high tension. . The running speed and cord winding speed of the working machine are set so that the multicore cord stretched between the transport vehicle and the working machine does not become loose or is subject to abnormally strong tension.
However, in reality, for various reasons during operation, the work equipment starts the return trip without winding the cord, causing slack, which causes a run-over accident, or conversely, the cord is not pulled out properly or the cord is not wound. Accidents have occurred in which the multi-core cord is cut due to high tension acting on it without starting.

Problems to be Solved by the Invention In the past, various control devices have been proposed for controlling the operation of working machines or transport vehicles in order to prevent the above-mentioned run-over or disconnection accidents. However, conventional control devices only detect either slack in the multi-core cord or excessively strong tension among abnormal tensions, or in the case of detecting both, the control devices are complicated and control is difficult. This is not always satisfactory as there are problems such as the device itself malfunctioning.

Means for Solving the Problems In view of the drawbacks of the above-mentioned conventional devices, the present application aims to check whether the tension of the multi-core cord stretched between the working machine and the transport vehicle is normal, slack or excessively stretched, that is, abnormal tension is the load. The working machine is provided with a detection means for electrically detecting whether or not the abnormal tension is present, and the detection means detects abnormal tension for a predetermined set time or more, and the abnormal tension is recovered even after the predetermined set time has elapsed. If it is confirmed that the power is being supplied to the drive motor of the work equipment, stop the power supply to both the work equipment drive motor and the take-up reel drive motor of the transport vehicle. Alternatively, the power supply to only the drive motor of the take-up reel is stopped.

Effect As a result of the above configuration, in the present application, if abnormal tension acts on the coreless cord stretched between the transport vehicle and the work vehicle, and the duration of the application exceeds a predetermined set time, the work By stopping power supply to both the drive motor of the cord and the drive motor of the cord take-up reel, or only the drive motor of the take-up reel, accidents such as running over and cutting the coreless cord can be prevented.

Embodiments Next, the present application will be described in detail with reference to drawings showing embodiments. Loading rail 24 of transport vehicle 1 (Fig. 5)
As shown in FIG.
It travels on the rail 5 laid in the working path 4 between the gear end or out end of the group, and after stopping at the side of the machine to be worked on, it starts on one side and performs work only on the left spinning machine group in the drawing, After the working machine is finished, it is loaded onto the transport vehicle 1 again and travels towards the next machine to be worked on. Therefore, the transport vehicle 1 is provided with two sets of take-up reels 7, 7A of multi-core cords 6 that supply power to the two work machines 2, 2A, but these are controlled in the same way. Therefore, in the description of the embodiment, only one side of the take-up reel 7 and the working machine 2 shown in FIG. 5 will be described. The transport vehicle 1 is equipped with various devices such as a traveling device, a loading device for the working machines 2 and 2A, and a working device for doffing and other tasks for the working machines 2 and 2A. Since they are not directly related to the present application, they are all omitted.

In FIG. 5, 7 is a take-up reel for the multicore cord 6 as described above, and the rotation of the drive motor 8 is transmitted through a transmission mechanism 8a such as a reduction gear. The terminal end of the multicore cord 6 wound around the take-up reel 7 passes through the control box 9 of the working machine 2 and reaches the drive motor 10, which rotates the drive motor 10 in forward and reverse directions as described later. The power is transmitted to the drive wheels 12 via an appropriate transmission mechanism 10a, and the work machine 2 is guided by a guide rail 13 provided along the front surface of the spinning machine 3 and reciprocates between the transport vehicle 1 and the spinning machine 3. It travels while pulling out the multi-core cord 6 from the cord winding reel 7, and on the return trip, it travels while winding up the pulled-out multi-core cord 6. Also, on the outward trip, the working machine 2 performs each work unit consisting of a predetermined plurality of spindles. As in the past, the machine stops and performs work such as doffing, and when the work is completed, moves to the next work unit, performing intermittent running.

As described above, when an abnormal tension is applied to the multicore cord 6 stretched between the transport vehicle 1 and the working machine 2 due to excessive loosening, the detection means 14 for detecting this is the first detection member. 15 and a second detection member 16, each of which is constructed as follows. First of all, the second sensing member 16 is as follows. In FIG. 1, 17 is a detection tube, and the detection tube 17 is a cylinder body divided into two in the longitudinal direction.
One end has a large-diameter tightening part 18, and this tightening part 18 faces the transport vehicle 1 side (the right side in the drawing), and the rear screw 19 is attached so as to surround the multicore cord 6. By tightening the tightening portion 18 with the screw, the multi-core cord 6 is attached to a predetermined position.
The detection tube 17 attached to the multi-core cord 6 is held by holding plates 20 and 20A provided at the bottom of the working machine 2 so as to be able to freely slide within a predetermined range. The detection tube 17
A detection dog 21 is provided protrudingly as shown in the drawing.
A spring 22 press-fitted between the detection dog 21 and the holding plate 20a urges the detection tube 17 in the drawing direction of the multicore cord 6, that is, to the left in the drawing, so that the detection dog 21 comes into contact with the holding plate 20. ing. The detection dog 21 has a certain width as shown in the drawings, and has a flat detection surface 21a on its outer periphery. Next, the first detection member 15
In this embodiment, it consists of a limit switch 15a provided at the bottom of the work machine 2, and the detection dock 2
1, the mounting position is set so that it can be pressed by the detection dog 21 when the detection tube 17 is pushed by the spring 22 and the detection dog 21 is in contact with the holding plate 20.

A transport vehicle 1 loaded with working machines 2 and 2A travels,
As shown in FIG. 5, when the spinning machine 3 to be worked is stopped on the side, the bridge 23 provided in the transport vehicle 1 is activated, and the bridge 23 is stretched between the transport vehicle 1 and the spinning machine 3, so that both Dotsuking. Next, in response to a start command to the working machine 2, the drive motor 10 rotates in the normal direction, and starts the forward journey while pulling out the multi-core cord 6 sent to the cord winding reel 7, and as described above, the spinning machine continues to move intermittently. It reaches the final stage of 3. At this time, naturally, the drive motor 8 of the cord winding reel 7 is not being driven. As described above, when the working machine 2 reaches the final end of the spinning machine 3 and the work is completed, a detection device (not shown) detects this and switches the drive motor 10 of the working machine 2 to reverse rotation and drives the cord winding reel 7. A winding command is issued to the motor 8. Therefore, the working machine 2 starts its return journey towards the transport vehicle 1 and is stretched in synchronization with this. The multi-core cord 6 is wound onto a cord take-up reel 7, and the work machine 2 is again loaded onto the transport vehicle 1 and transported towards the next machine to be worked on.

In the series of work cycles described above, as long as each operating part operates normally, the work equipment 2
Multicore cord 6 stretched between the and transporter 1
Abnormal tension due to over-pulling or loosening should not be applied. However, in actual work, the following troubles may occur, resulting in abnormal tension. In other words, in the case of outward travel, the cord winding reel 7 may not rotate in the reverse direction for some reason, resulting in excessive pulling due to a pull-out failure, or in the case of return travel, only the winding may occur even though the working machine 2 is not traveling. This may be due to over-pulling due to excessive winding, or even slackness due to the work machine 2 not winding up properly even though it is traveling on the return trip.If this is left untreated, a tripping or cutting accident will occur. However, in the present application, this is detected and the accident is prevented in the following manner.

When the work equipment 2 is loaded on the transport vehicle 1, no tension is acting on the multicore cord 6, so the holding tube 17 is pushed by the spring 22 and the detection dog 21 is moved to the first position.
As shown in the figure, the state is the same as when the multicore cord 6, which will be described later, comes into contact with the holding plate 20 and becomes slack. When the working machine 2 starts its outward journey from this state, the detection tube 17 maintains the state shown in FIG. Therefore, it is not detected as abnormal tension and work equipment 2
runs while pulling out the multi-core cord 6.
When running in this manner, tension is applied due to the pull-out resistance from the cord take-up reel 7 and the weight of the multi-core cord 6, and the multi-core cord 6 is pulled to the right in the drawing opposite to the pull-out direction. , the detection tube 17 presses the spring 22 and moves to the right, and the detection dog 21 presses the limit switch 15A, resulting in the state shown in FIG. 2 in which the tension and the elastic force of the spring 22 are balanced. That is, in the embodiment of the present application, the limit switch 15A is always pressed when the tension acting on the multi-core cord 6 is normal, so that the work implement 2 runs while confirming that the tension on the multi-core cord 6 is normal. However, tension fluctuations within an allowable range during running are absorbed by the sensing surface 21a of the sensing dock 21, and do not cause any trouble.

As described above, when abnormal tension acts on the multicore cord 6 is as follows. First, if excessive tension is applied to the multi-core cord 6 due to excessive pulling, the above-mentioned normal tension balance will be disrupted and the multi-core cord 6
is further pulled back to the right, so the detection tube 17 moves to the position shown in FIG. If it is detected that the load has been applied and this condition is not corrected even after a predetermined set time has elapsed, the drive motor 10 of the work equipment 2 is stopped and the movement of the work equipment 2 is stopped, thereby preventing the occurrence of an accident. prevent. As described above, even if abnormal tension occurs, the working machine 2 will not stop if the abnormal tension is instantaneous or if it is naturally repaired within a predetermined set time.

Next, during the go-around, the procedure is as follows. If an excessive tension is applied to the multicore cord 6 during a go-around, the detection means 14 will operate in the same manner as described above, resulting in the state shown in Fig. 3, and even after the predetermined set time has elapsed, If it is not repaired, stop the drive motor 10 of the working machine 2 in the same way as on the outbound trip, and
The drive motor 8 of the cord winding reel 7 which is winding the multi-core cord 6 is stopped, and the winding of the multi-core cord 6 is stopped. As mentioned above, on the return trip, even if the working machine 2 travels normally, if the multi-core cord 6 is not wound normally,
If abnormal tension is generated due to slackness and the working machine 2 continues to run, there is a risk of a run over. When the multicore cord 6 becomes slack in this way, the balance under normal tension as shown in FIG. When the pressure on the limit switch 15A is released, and as described above, if this condition is not corrected even after a predetermined set time has elapsed, the drive motors 10,
8 to prevent accidents from occurring.

In the embodiment of the present application described above, the limit switch 15A is provided on the main body of the working machine 2, and the detection dog 21 is provided protruding from the detection tube 17 attached to the multi-core cord 6. In addition, a limit switch 15A may be attached to the detection tube 17, and two limit switches may be attached to the work equipment 2, so that one of the limit switches is pressed in the case of excessive tension or slack, and one of the limit switches is pressed in the case of normal tension. It can also be implemented in such a way that it never occurs. As is clear from the above, the present application provides a relative relationship between a detection member fixedly provided on the main body of the work machine 2 and a detection member fixedly provided on the multi-core cord 6 and fixedly provided based on tension fluctuations of the multi-core cord 6. It consists of a movable sensing member whose positional relationship changes, and abnormal tension is detected by changes in the relative positional relationship of both sensing members, so as long as this condition is satisfied, it is limited to the above embodiment. It is not something that will be done.
Note that the control means for electrically controlling the drive motor 10 of the working machine 2 and the drive motor 8 of the cord winding reel 7 as described above based on the detected abnormal tension by the detection means 14 is conventionally used. Since the electrical circuits shown in FIG.

Effects of the invention As described in detail above, the present application uses a fixed detection means directly attached to the work machine body and a fixed detection means attached to a multicore cord based on the tension fluctuation of the multicore cord. Abnormal tension is detected by a movable detection means held on the work equipment so that the relative positional relationship of the It is a useful idea as there is no need for maintenance and management is easy.

[Brief explanation of the drawing]

The drawings show the embodiment of the present application, and FIGS. 1 to 3 are operation explanatory diagrams that are partially enlarged from FIG. 5, FIG. 4 is an end view of the stopper part, FIG. FIG. 6 is a plan view of the arrangement. DESCRIPTION OF SYMBOLS 1... Transport vehicle, 2... Working machine, 3, 3A... Spinning machine, 6... Multicore cord, 7... Cord winding reel, 8, 10... Drive motor, 14... Detection means, 15... ...First detection member, 15A...Limit switch, 16...Second detection member, 17...Detection tube, 21...Detection dock, 22...Spring.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. A transport vehicle having a cord winding reel, a cord loaded on the transport vehicle, powered by a multi-core cord from the transport vehicle, and reciprocating between the transport vehicle and the spinning machine; During this time, in the work machine that performs a predetermined work, a first detection member is fixedly provided at a predetermined position of the work machine, and a multi-core cord is attached to a multi-core cord stretched between the work machine and the transport vehicle. A second sensing member held on the working machine constitutes a sensing means so as to move within a predetermined range according to tension fluctuations, and when the sensing means detects abnormal tension for a predetermined set time or longer, , An abnormal tension detection device for a multi-core cord in a spinning machine working machine, which stops the drive motor of the work machine and the drive motor of the cord winding reel of the transport vehicle at the same time, or stops only the drive motor of the work machine. . 2. The first detection member constituting the detection means is a limit switch attached to a predetermined position of the working machine,
The second detection member is attached to the multicore cord, the protruding detection dog corresponds to the limit switch, is held on the working machine so as to be able to slide freely within a predetermined range, and is pulled out by a spring. This is an abnormal tension detection device for a multi-core cord in a spinning machine working machine, which consists of a detection tube that is biased in a direction.