JPS588130A - Removing method of variation in weight in long direction of lap and apparatus thereof - Google Patents

Abstract

PURPOSE:To remove the variation in weight in the long direction and improve the uniformity, by adding a draft ratio set to offset the trend value of the variation in weight of the lap to the standard draft ratio one after another. CONSTITUTION:The weight per unit length of a lap is light at the start of winding the lap, increased gradually, and then further reduced after exceeding the target value. To remove the variation in weight of the lap in the long direction, the draft ratio applied to the fibers before the lap formation is changed stepwise interposing the standard draft ratio indicated by an alternate long and short line therebetween to show the target weight per unit length of all the laps in the respective zones after the drafting.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method and apparatus for eliminating longitudinal weight variations in wraps formed in a wrap former machine.

In wrap former machines, such as sliver wrap machines and ribbon wrap machines, which are comber preparation machines in cotton combers, longitudinal weight variations are found in the formed wraps. When a pair of plastic wrap with low binding force is rolled up at work, it is E! This is a phenomenon that occurs due to the power of electricity. In other words, due to the influence of 4% and 11, the wrap becomes eregia rad, and as a result, the clap is 1% thinner, while the tsubu O1l is large, causing it to fall apart. - Two (two) is diluted and one (Iregi a) is created)
K<~turtle>, as a result the wrap does not become thinner.

There is a tendency for the thickness of F7'0 to change depending on the 2 dots of HiOiregijima. The loose wrap for indder mechanism O goodness 1, that is, the machine O (
This is due to weight fluctuation due to weight.

As mentioned above, if a wrap with a longitudinal direction O weight movement is treated with a combing machine, it is natural that it will be combed! Even if the weight fluctuation of the wrap fed to the hoisting O sliver occurs, there may be some O offset between the machine process and the O11 O process due to the shift dabber operation. Finally, weight fluctuations have the disadvantage of reducing the evenness of the yarn.

This invention eliminates the above-mentioned drawbacks of the conventional O-wrap 7#-Ma IIO, and eliminates the above-mentioned drawbacks of the conventional O-wrap 7#-ma IIO.
This is for the purpose of being an element in IL's Lap 7#-1 machine.

The target of this issue *01 is the wrap-forming mechanism that uses the individual Otsu V gouf spear machine K and the tsuy when picking up the OII # sex and the transmission
The tendency value of the longitudinal weight fluctuation that occurs due to the outer radius * of the outer radius is fixed, and the Kl is set so as to cancel the tendency value of the longitudinal weight fluctuation.
This is achieved by sequentially adding the desired draft ratio to the reference draft ratio of the Pzoma machine as the lap progresses.

The present *e+io* example will be described below with reference to the attached drawings.

The unit length of the ship for the wrap used in the 1st II Hiro Sliver Wrap Machine is measured as the vertical axis, and the longitudinal axis of the wrap O is divided into 10 equal parts, and the horizontal axis is the yyO unit. FIG.

Measurement of weight is carried out, for example, as follows, i.e., the lugs formed on a slipper wrap machine are unwound and spread out, and the beginning of the roll is 5 yards from -1, Cut 2 yards and weigh them to calculate the weight per yard. After that, sequentially, for example, 30 yards)'II
K! +-) to gIjN to calculate the weight per yard, and obtain 10 numerical values over the entire length of the wrap. 11th
1 shows the target value of the weight per unit length of the one-point chain binding chain drawn parallel to the horizontal axis.

No. 111-e As is clear, the weight per unit length of the wrap is lighter than the target value at the beginning of wrapping (the left end in No. 115!!l), and then the weight is gradually increased to exceed the target value. There is a section in 1 where the weight decreases greatly as the volume approaches the end.

Figure 2 is a diagram showing the draft ratio of the drafting means adopted in the method of reducing the longitudinal weight fluctuation of the wrap at 1jlK), where the vertical axis is the draft ratio and the horizontal axis is the longitudinal direction of the wrap. It shows.

In FIG. 2, a chain line drawn parallel to the horizontal axis indicates a draft ratio of 1, that is, a standard draft ratio, which is adopted when the target value is 0 weight per unit length of the wrap. As you can see in Figure 2, lap 010 after 1 Larp Kl was taken.
The draft ratio applied as each equally divided area is drafted before becoming a lap is varied stepwise. HiO field OII step O draft ratio change is the first
It is determined in accordance with the weight fluctuation per unit length of the wrap shown in the figure. That is, the area of the wrap indicated by 1 in FIG. 1 tends to be lightly engraved compared to the target value of weight per unit length O, and the sliver wrap! The target value of the draft ratio is set to be smaller than the target value of the draft ratio when the draft ratio is formed by thin drafting. On the other hand, the area of the wrap indicated by 8 is heavier than the target weight value and is shaped like 1! Therefore, when the sliver wrap is troughed to form the zone 8, the draft ratio is set to be larger than the target value of the draft ratio. And each area is 27)
The draft ratio for each area is set so that the target unit length and weight are all set in 11.

Also in the ribbon wrap machine l) F: 20jI #Hirosu 2 Iparap! Since the same type of t)%0 is used, the laps formed exhibit the same weight variation per initial length as in FIG. Therefore, like the second Wi,
A draft means O draft ratio for each area of the wrap is set.

As a result of drafting with the draft ratio of the draft means set for each area as described above, the sliver 1F7'! The weight of each section of the wrap formed from the thin and ribbon wrap machines approaches the respective weight per unit length oIiI target value, making it possible to obtain a wrap without longitudinal weight fluctuations.

Next, remove the longitudinal weight fluctuation of the wrap of the present invention*1
An example in which the ribbon wrap machine is installed in a ribbon wrap machine will be described.

As shown in FIG. 4, the ribbon wrapping machine includes a wrap supply means 25, a draft means 26, and a wrap doubling means.
and a lap winding means 1J. A plurality of wraps placed on the wrap supply means K11l are each drafted, doubled in a layered manner, and wound right behind to form a wrap. The mechanisms of each ribbon wrap machine 0 are driven from the main basket 33 via respective mechanical coupling mechanisms.

The device for removing the longitudinal weight fluctuation of the O-wrap of the present invention is a draft ratio control mechanism connected to a draft means, and the draft ratio control mechanism is comprised of a "storage device operating mechanism 1" and a storage device, as shown in FIG. 1-1 and draft ratio changing machine-1
It consists of 1.

FIG. 3 shows a block diagram of an apparatus for eliminating longitudinal weight fluctuations of the present invention.

The storage device operating mechanism 35 is wound by the wrap monitoring means 1 and 2, and is carried out in the area where one roll is formed.
This is a device that instructs the storage device when to change the draft ratio. In other words, the storage device operating mechanism 1 is composed of a pulse generator and a counter. The pulse generator is a lap progress length measuring means that generates pulses in proportion to the rotation speed of the main motor, so it indirectly measures the length of the lap progress.
This is a device that measures the length of the formed wrap. The counter is a memory activation means that counts the O pulses from the pulse generator, and the count value of the pulses from the pulse generator reaches a designated position at each predetermined interval of the lap, which is stored as the corresponding count value. A signal is output to the storage device each time. In this example, the designated positions at each predetermined interval of the wrap are 10 locations, and the total length of the wrap is 350 yards (
Remove 5 yards (approx. 4.5 m) of each of the beginning and end of the roll (approximately 320 m), and divide the middle part of the remaining υ into 10 equal parts.
areas are created, and the front end position of each area is determined as the designated position.

A memory device 36 is a character generator, and the character generator is provided with a memory element of 10 times,
In each of the memory elements, a predetermined draft ratio addition value to the reference draft ratio of the draft means is recorded in correspondence with the designated position.

In other words, the reference dock shown in FIG. The difference dl-D from the draft ratio d1 set as above is recorded in each memory element as a draft ratio additional value. When the character generator receives a signal from the storage device operating mechanism, the character generator generates a predetermined degree from the storage element at a specified position corresponding to the signal.
A reading arithmetic device is provided that reads the draft ratio additional value, calculates the difference between it and a predetermined draft ratio additional value at a specified position one position before the specified position, and outputs the difference as a voltage value.

The draft ratio changing mechanism J consists of a motor control section 38, a control motor mechanism 39, 40, and a differential gear 42 (FIG. 5). The motor control section 3B is a mechanism that amplifies the voltage value from the character generator and transmits it to the control motor mechanisms 39 and 40. The control motor mechanism is composed of a control motor 39 and mechanical coupling means such as a reducer 40, and the control motor 39 generates a rotational force at a rotational speed corresponding to the voltage amplified by the motor control section 38, and the mechanical coupling means is a mechanism that transmits the rotational force to the differential gear 42. In addition to the rotational force of the control motor 39, the differential gear 42 also has a drive means 26.
It is installed so as to give a reference draft ratio to 9 rotational force is transmitted. That is, as is clear from FIGS. 3, 4WA, and 5, the six lambda wheels 41 are connected to one end of the differential gear 420, and the input shaft 41 has a
1 turning force 1I7X*t.

Draft part 0 reference trough via mechanical coupling mechanism)
It is converted into a rotation speed corresponding to JtK and given.

The output shaft 43 is further connected to the differential gear 42, and the rotational speed of the output shaft 430 is a rotation that is a combination of the 0 rotational speed of the OB1 rotational force from the control motor 39 and the 11 rotational speed of the O rotational force from the main sweater 33. It's speed.

The draft hand J226 of the ribbon 2-tub machine is 7p)p
-Ra 27, two dollar rollers 28.29 and back p-
230, the front roller 27 is directly driven from the main motor 33 via a mechanical coupling mechanism (Fig. 4), and the two O middle rollers 38 and 29 are the pack four rollers 3.
It is driven via a zero gear mechanism. And the said Dora 7
) The sliding mechanism 370, the differential gear 420, and the output shaft 43 are connected to the pack roots 3OK via the power transmission means 44.

W141) In this embodiment, the storage device 1j of the device for removing weight fluctuations in the longitudinal direction of the wrap is stored in each of the storage elements of the character generator such that the draft ratio addition value to the standard draft ratio of the drafting means corresponds to the specified position. #! is configured to be However, a function generator is additionally attached to the memory device, and the memory element stores the characteristics of each wrap forming mechanism and the tendency value of the longitudinal weight fluctuation of the wrap that occurs due to changes in the outer diameter of the wrap O. The function generator adds a draft ratio to a reference draft ratio by converting it into memory corresponding to a specified position at each predetermined interval in the longitudinal direction and canceling the trend value of the weight fluctuation in the longitudinal direction of the wrap inputted from the storage element. value, and the draft ratio additional value can be configured to be output in correspondence with the specified position.

Next, the operation of the device for eliminating longitudinal weight fluctuations of the wrap according to the present invention will be explained.

First of all, target Tsug 7#-ma machine, for example, Sutui Harap! The characteristics of the wrap-for-elongation mechanism in a thin or ribbon wrap machine and the tendency of longitudinal weight fluctuations caused by changes in the outer diameter of the wrap during wrap winding are determined. The storage device of the device of the present invention, which is attached to the lap former IIK at the ninth point, is adjusted to the zero point. In other words, the draft additional value is set to OK at all specified positions. Thereafter, a wrap is formed using predetermined raw materials and under predetermined spinning conditions. Unwind and spread the formed wrap to make the total length of the wrap 3.
By removing 5 yards (about 4.5 m) of each of the 50 yards (approximately 320 m) of the beginning and end of the spring, the middle portion is divided into 10 equal parts to obtain 10 wrap subareas. Two specimens of 1 yard each are cut in the longitudinal center area of each of the 10 wrap subsections.

Weigh each sample, calculate the average value, and calculate the unit length (F)
t) Find the weight. Thus, the target lap ho-r
II C) Longitudinal weight fluctuation O tendency value having the first
obtained as shown in the figure. In order to obtain a more accurate trend value, it is recommended to measure the weight per unit length of several lugs using the method described above and calculate the average value as the trend value. The removal of D05 yards may be done by removing only one side.

Based on the trend value, the draft ratio additional values d and D at the 10 designated positions are calculated as shown in the second @IK.

Next, the draft ratio additional value 4%-0 is stored in 10 memory elements of the character generator, which is a memory device of the apparatus of the present invention, in correspondence with the specified position. Next, the recording device operation horizontal O counter owns is performed. In other words, the counter is adjusted so as to output a signal to the storage device each time the O-wrap being formed reaches the length at which the 10 specified positions are placed. By the above storage device O storage and counter adjustment, the pre-operation preparation of the apparatus of the present invention is completed.

The spinning operation of a lap former machine equipped with the device of the invention is carried out in no way different from the operation of a regular O lap former machine. The draft ratio additional value recorded in the storage device 36 is read at every 1090 designated positions, and the difference from the previous draft ratio additional value is transmitted to the differential gear 42, and the rotation speed of the pack roller 3o is adjusted. I can do it. And 0 on the horizontal axis in Figure 2
When the additional value of the ratio of the drum 7F is negative as in position 20, the differential gear 42 operates so that the rotational speed of the batter roller 30 becomes faster, and the total draft ratio of the drafting means becomes smaller. Conversely, when the draft ratio addition value is positive as at position 8 on the horizontal axis in FIG. In this embodiment, firstly, the rotation of the cant roller 28 is linked to the puck row 230, so the draft ratio addition value that is changed for each specified position is It takes place between Tsu 27 and the first dragon Kandora 28. Draft ratio of over O
All wR changes are automatically performed by the device of the present invention. A wrap is then formed in which longitudinal weight fluctuations are eliminated.

No. 59 shows an implementation diagram of an embodiment of the device for removing weight fluctuations in the longitudinal direction of the O-wrap of the present invention.
In this Example 0 device, the standard draft ratio 0 value is applied to the applicable lap for! A reference draft ratio adjusting device for adjusting according to the value of the volume of the yMII11 9 tsup 01 mass from the machine is provided in addition to the device of the first implementation #l. The standard draft ratio adjustment device is the 51st! Weighing device, as shown in
It consists of a comparator, a good report a, and an arithmetic unit. The weighing device is a device that weighs the weight of one wrap that has been dotted after a certain amount of spring has been taken by the inspection means of the two-tub counter machine, and the weighing is performed every dotfing, and the zero weighing value is output as an electric signal. Comparison IIIK is output. Upper and lower limit values of the weight of 0 wraps are set in the comparator. The comparator is a device that compares the electrical signal input from the scale with the upper and lower limit set values, and outputs a signal to the alarm if it deviates from the upper and lower limit set values. It is equipped with a flashing 2 lamp and/or a warning buzzer, and also has a signal 0 transmitting device that stops the drive device of the lap 7 machine.

On the other hand, if the signal from the weighing device is within the upper and lower limit set values,
The signal is output to the comparator. A center weight setting signal corresponding to the target weight per unit length of the wrap formed by the wrap 7#-ma machine is set in the comparator. The comparator is a device that compares the electric signal input from the comparator with the center weight setting signal, computes the deviation value as a geometrically weighted average of the values measured up to the previous time, and outputs the result. It is. The output from the comparator is added to the signal from the character generator shown in the first embodiment and is input to the motor control section. Other OwI functions in the device of this embodiment O are the same as those of the first embodiment.

The sliver or wrap fed to the two-tube printer contains significant state variations caused by previous processes. And the weight loading is expressed as a difference in the weight of 01 laps. Therefore, even if it is possible to eliminate longitudinal weight fluctuations within a single wrap using only the device that removes longitudinal weight fluctuations in the wrap as shown in the first embodiment, the average weight per unit length over the entire length of one wrap is Wrap for vllk
It varies depending on the loft of the supplied sliver or wrap. Average weight per unit length over the entire length of one wrap 0 To eliminate the difference in each loft of the feed material, the reference draft input by mechanical means from the main motor to the differential gear as shown in the first embodiment is used. What is necessary is to adjust the rotation speed corresponding to the ratio. Therefore, in this embodiment, a reference draft ratio adjustment device is provided, and the average weight per unit length of one wrap, expressed by the weight of one wrap, is input into the reference draft ratio adjustment device, and the unit is set to zero for the wrap. It compares the weight per length and outputs the difference to the motor control section.

That is, the reference draft ratio adjusting device in the apparatus of this embodiment adjusts the reference draft ratio in the apparatus of the first embodiment for each lap formed by the applicable lap former machine to obtain an adjustment reference draft ratio. K is set so that fluctuations in weight in the longitudinal direction of the wrap can be eliminated based on the draft ratio.

Therefore, by using the apparatus of this embodiment, it is possible to eliminate the fluctuation in the weight of the wrap in the longitudinal direction, and it is also possible to keep the weight constant at the weight of the wrap IIO, unit length, mold O, weight standard.

And the supplied raw materials, for example, Sukui Al9, are lap O
If the weight per unit length exceeds the upper and lower limit set values, the machine will be stopped and a report will be issued, which prevents wasted spinning operations on the lap former machine and also allows for inspection and adjustment of the previous process. Helpful to do.

The present invention measures the characteristics of the individual two-tub forming IIK$-company wrap 7 ocher mechanism and the longitudinal direction weight fluctuation O tendency value that occurs due to changes in the outer diameter of the wrap O at the time of lap inspection, and measures the weight. By setting the draft ratio so as to cancel out the tendency value of fluctuation and adding it sequentially to the standard draft ratio of the drafting means of the lap former machine as the wrap 31 progresses, the weight fluctuation in the direction of the yam is removed. A wrap is obtained, and as a result, the straightness of the combed yarn Oj1 spun using the wrap formed using the wrap 7-ohm machine equipped with the IjIO device of the present invention is improved.

Furthermore, as shown in another example of the qgo of the present invention, if a reference draft ratio adjustment device is added to the device of the present invention and used, it is possible to eliminate longitudinal weight fluctuations of the wraps and to reduce the weight per unit length of each wrap. can be kept constant at its own target weight, and as a result, the spun coat! The evenness of the yarn can be improved even over a fairly long cycle. Further, if the weight of the wrap O unit length roller exceeds the upper and lower limit set values, the machine is stopped, so that unnecessary spinning operations can be prevented and the previous process can be inspected and adjusted.

Furthermore, the apparatus of the present invention performs an operation for measuring the trend value of the weight fluctuation in the direction of the Japanese yam in the lap, and a recording device for the additional value of the draft ratio.
All operations of the apparatus of the present invention, such as operations and counter adjustment operations, other than settings are automatically processed. However, the operation of the lap former machine equipped with the OII device of the present invention does not require any special operations, in other words, it can be operated with the ordinary lap former machine without placing any special burden on the workers. Just by performing the same operation, you can create a wrap that eliminates longitudinal weight fluctuations.
I can do it.

Furthermore, the device of the present invention has a simple structure and is therefore inexpensive.
It can be used not only for new installations but also for existing installations by modifying them.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing the weight fluctuation of a nine-up unit length bearing formed in a sliver wrap i7. FIG. 2 is a diagram showing the draft ratio set for each designated position in the apparatus of the present invention. FIG. 3 is a block diagram illustrating an embodiment of the apparatus of the present invention. FIG. 4 is a schematic perspective view of a nine-ribbon wrapping machine equipped with an apparatus according to an embodiment of the present invention. FIG. 5 is a front view illustrating a draft ratio changing mechanism used in the apparatus according to the embodiment of the present invention. FIG. 6 is a boot diagram illustrating another embodiment of the apparatus of the invention. 21.-Wrap unit length per weight curve for the entire length of the wrap, 22. Draft ratio set for each specified position of the entire length of the wrap, l'...Wrap supply device, 247-7 calculation y) Sac-ra, 2 B--First second lozenge, 29... Second second lozenge, 30... Back roller, 31-... Lap printer means, 32... Wrap Winding means, 33...Main motor, 1"...Storage device operating mechanism, 1"...Storage device, 3F...Draft ratio changing mechanism, 38...Motor control unit, 39.- control motor,
40...Reducer, 41...Input shaft for rotational force giving reference draft ratio, 4
2...Differential gear, 43.-Output shaft after being adjusted by differential gear, 44.-
Power transmission means. Figure 1 Figure 2 12 3 4 5 6 7 8 9 1
0Figure 3

Claims (1)

[Claims] 1. A method for determining the longitudinal weight fluctuation of the wrap in a wrap former machine; The generated longitudinal direction weight fluctuation OIt direction value is sent to Il, and the draft ratio set to cancel the longitudinal direction weight fluctuation trend value is set as the lap carving O road.
The method is to sequentially add to the reference draft ratio of the draft means to melt the lap to compensate for the longitudinal direction amount variation caused by the wrap forming process. 2. A device for eliminating longitudinal weight fluctuations of the wrap suitable for a lap former machine, comprising a doubling means for the swiper or the lug, a swiper trenching means, and a winding means for the wrap. at; a draft ratio W at which the device is connected to the draft means;
*It is a mechanism, and the control @I11 is the storage device,
From the storage device operating mechanism that outputs a good O signal that operates the storage device and the Dotsufu F comparison mechanism that operates based on the signal from the storage device, the storage device is activated at lap 7. It is characterized by a person who memorizes the characteristics of the pulling mechanism and the draft ratio set to cancel the tendency value of the longitudinal weight fluctuation that occurs due to the change in the outer diameter of the wrap when removing the wrap O. A device that eliminates longitudinal weight fluctuations of two tubes. 36 The storage device includes a plurality of storage elements and a function generator, and each storage element has a function generator that controls the longitudinal weight variation O of the wrap.
The trend values are stored in correspondence with specified positions at predetermined intervals in the longitudinal direction of the wrap, and the mlll generator inputs the trend values output from the respective storage elements. 3. The SO device according to claim 2, wherein the SO device is configured to convert the draft ratio so as to erase the draft ratio and output it as an additional value of the draft ratio with respect to the reference draft ratio. 4. The storage device stores the longitudinal weight fluctuation O1s of the wrap.
The storage element includes a IIWk storage element that stores draft ratio additional values for a reference draft ratio set to cancel the above-mentioned tendency value in correspondence with specified positions at predetermined intervals in the longitudinal direction of the wrap. The Om position according to claim 1, in which a draft ratio additional value is output. 5. In the storage device or the character generator, the character generator stores a predetermined draft ratio addition value to the reference draft ratio of the drafting means in correspondence with a specified position at each predetermined interval in the longitudinal direction of the wrap, and A patent claim in which the O output outputs, as a voltage value, a value corresponding to the difference between the signal N1 designated position 0 predetermined draft ratio additional value from the storage device operating mechanism and the predetermined draft ratio additional value at the immediately preceding designated position. The device according to item 4. 6. The specified position O at each predetermined interval in the longitudinal direction of the wrap
If there are 6 to 30 IIs, and the specified position is the beginning of the lap and the end of the lap, the running length is removed, and the middle part of the remaining lap is divided into 6 to 30 equal parts. 6 table 3
Apparatus according to any one of claims 2 to 5, wherein 0 zones are actuated and each of the zones is run to the OSm position. The predetermined interval IIO in the longitudinal direction of the y-wrap is 6 to 30 specified positions OII, and the specified position is either the beginning or the end of the wrap with respect to the entire length of the wrap.
After removing a certain length from part to part, dividing the remaining 0 part into 6 to 30 equal parts to operate 6fi to 30110 areas, according to claim 2) defined at the front end position of each of the areas. The device according to any one of Item 5. & The device according to claim 6 or 7, wherein the number of designated positions is ten. 9. The mechanism for operating the storage device comprises a lap progress length measuring means and a storage device activating means, and the lap progress length measuring means detects the progress length of the lap to be formed in the form IIL11 or a value proportional to the progress length. The storage device activating means compares the progress length of the lap detected by the lap progress length measuring means with the above-mentioned interval, and determines the length of the lap to be carried out at each of the predetermined intervals. 3. The apparatus according to claim 2, further comprising means for outputting a signal to a storage device each time the object passes through the predetermined position. 1. The lap progress length measuring means is a pulse generator that generates pulses in proportion to the rotational speed of the main motor, and the storage device activating means counts the pulses from the pulse generator and In order to indicate the position, a signal is output every time the count value of pulses from the pulse generator at the predetermined interval Kl of the lap is stored as the corresponding count value. The device according to scope item 9. 3. The device according to claim 2, wherein said draft ratio changing mechanism comprises draft ratio changing means and actuation transmitting means for transmitting a signal from the storage device to the draft ratio changing means as a mechanical actuation. 12. The operation transmission means includes a motor control unit that amplifies the output voltage from the storage device and a control motor that is operated by the amplified voltage, and the draft ratio changing mechanism includes a differential gear and a differential gear. power transmission means for connecting the output shaft to any one of a plurality of draft rollers forming the draft means; According to claim 11, the corresponding rotational force and the rotational force from the control motor are input, and rotation having a rotational speed that is a combination of the rotational speeds of the two rotational forces is output to the power transmission means. equipment. 13. The apparatus according to claim 12, wherein the output shaft of the differential gear is connected to a pack row M)K of the drafting means via the power transmission means.