CN221472468U

CN221472468U - Feeder of peanut selecting machine

Info

Publication number: CN221472468U
Application number: CN202323198514.6U
Authority: CN
Inventors: 邹中强
Original assignee: Nanyang Jinfeng Machinery Co ltd
Current assignee: Nanyang Jinfeng Machinery Co ltd
Priority date: 2023-11-27
Filing date: 2023-11-27
Publication date: 2024-08-06
Anticipated expiration: 2033-11-27

Abstract

The utility model discloses a feeder of a peanut selecting machine, which comprises a feeding frame, a feeding mechanism and a sorting mechanism; and (3) a feeding frame: the left side and the right side of the upper surface of the feeding frame are respectively connected with pulleys through bolts, the pulleys on the left side are lower than the pulleys on the right side, and the right side of the upper surface of the feeding frame is connected with a boss through bolts; and a feeding mechanism: the feeding device is arranged in the middle of the feeding frame; sorting mechanism: the circular ring sliding grooves on the left side and the right side of the circular ring sliding groove are respectively and slidably connected with two pulleys vertically adjacent to each other, and the sorting mechanism is fixedly connected with the left side surface of the boss; wherein: the right side middle part of boss is equipped with control switch group, and the external power source is connected to control switch group's input electricity, feeding mechanism includes arc unloading platform, baffle, branch dipperstick, conveyer belt, adjustable fender and pivot, and this peanut selects the feeder of fruit machine adopts trompil conveyer belt and multistage letter sorting mechanism, realizes automatic efficient mechanized pay-off and selects fruit operation, reduces the human cost, has also reduced the probability of human error.

Description

Feeder of peanut selecting machine

Technical Field

The utility model relates to the technical field of feeders, in particular to a feeder of a peanut selecting machine.

Background

Peanut is used as an important oil crop in China, the quality of the peanut is closely related to the processing quality and the product quality, and the peanut is manually selected all the time, so that the efficiency is low, the productivity is limited, and the quality of the peanut is easily unstable.

The peanut picker feeder is one of key equipment for realizing the mechanization of picking fruits, is an important transmission link for connecting the front working procedure and the rear working procedure of the peanut picker, is relatively mature in research at present, has higher performance indexes of feeders of various brands at home and abroad, and has preliminarily realized the mechanization of picking fruits, but the existing partial feeders have certain defects in structural design and functional realization, so that the research and development of the peanut picker feeder are very necessary.

The existing feeder has a certain problem, mainly a part of the feeder of the peanut selecting machine adopts a shaking screen to select, a sorting hole with an equal interval increasing diameter is formed in the shaking screen, then a diversion trench is arranged below the corresponding sorting hole, and then the sorting hole is conveyed through a common conveying belt, so that blockage is easy to occur under high-speed high-capacity working conditions, the efficient working is not realized, the working efficiency of the whole peanut selecting machine is influenced, peanuts are directly conveyed to a storage area from a feeding inlet, mechanical damage is easy to be caused to the peanuts, the integrity of the peanuts is difficult to be ensured, a screening and sorting mechanism is simple, the high-efficiency and accurate sorting is not realized, the quality of the selected peanuts is difficult to be ensured, a large amount of manual operation is needed, waste treatment is insufficient, the working environment is easy to be polluted, and the recycling utilization is also unfavorable.

Disclosure of utility model

The utility model aims to overcome the existing defects, and provides a feeder of a peanut selecting machine, which adopts an open-pore conveying belt and a multi-stage sorting mechanism, so that efficient filtration and accurate sorting are realized, the degree of automation is high, the waste is effectively treated by layer-by-layer screening, pollution is avoided, the effective utilization of various resources is realized, and the problems in the background technology can be effectively solved.

In order to achieve the above purpose, the present utility model provides the following technical solutions: a feeder of a peanut selecting machine comprises a feeding frame, a feeding mechanism and a sorting mechanism;

And (3) a feeding frame: the left side and the right side of the upper surface of the feeding frame are respectively connected with pulleys through bolts, the pulleys on the left side are lower than the pulleys on the right side, and the right side of the upper surface of the feeding frame is connected with a boss through bolts;

and a feeding mechanism: the feeding device is arranged in the middle of the feeding frame;

Sorting mechanism: the circular ring sliding grooves on the left side and the right side of the circular ring sliding groove are respectively and slidably connected with two pulleys vertically adjacent to each other, and the sorting mechanism is fixedly connected with the left side surface of the boss;

Wherein: the right side middle part of boss is equipped with control switch group, and control switch group's input electricity is connected external power source, realizes automatic efficient mechanized pay-off and selects the fruit operation, reduces the human cost, has also reduced the probability of human error, classifies and separates the peanut of different specifications, accurately classifies the peanut to corresponding storage area, adopts multiple means effectively to protect the peanut and accurate classification, has realized the safe efficient mechanized separation of peanut, can provide reasonable protection to the peanut in the separation pay-off in-process.

Further, feeding mechanism includes arc unloading platform, baffle, divides the dipperstick, conveyer belt, adjustable fender and pivot, the pivot rotates respectively and connects in the inside front and back both ends of pay-off frame, and two pivots pass through the conveyer belt transmission and connect, have seted up evenly distributed's hole on the area body of conveyer belt, arc unloading platform is put in the place ahead of pay-off frame, has all pegged graft the baffle in the inside evenly-offered socket of arc unloading platform, and the upper end front side of arc unloading platform has pegged graft adjustable fender, and limit mouthful that corresponds with the baffle has been offered respectively to adjustable fender's bottom, divides the dipperstick to set up respectively in the upper end of four baffles, divide the dipperstick to be located the top of conveyer belt, divide the rear side of dipperstick respectively with the steel sheet fixed connection of the upper surface rear side of pay-off frame, the billet both sides pass through bolt and the upper surface threaded connection of pay-off frame, adopt multiple means effective protection peanut and accurate classification, realized safe efficient mechanized the separation of peanut.

Further, sorting mechanism still includes ring, ring gear, selection material pipe, gear, go-between and second motor, the ring spout has all been seted up at the outside middle part of ring, the ring passes through ring spout and vertical adjacent pulley sliding connection, the outside fixedly connected with ring gear of ring on right side, the left surface fixedly connected with second motor of boss, the output shaft and the gear fixed connection of second motor, ring gear and gear engagement are connected, the output of control switch group is connected to the input electricity of second motor, the opposite medial surface of two rings all is equipped with evenly distributed's selection material pipe, the selection material pipe of circumference distribution is a set of, one side that a set of selection material pipe is close to the pay-off frame all is equipped with the go-between, be equipped with evenly distributed's selection material steel pipe between two go-between, the rotation that the motor drove makes whole screening process automatic, do not need artifical the participation, the human cost is reduced, the probability of human error has also been reduced.

Further, the upper end right side of pay-off frame is equipped with the feeder hopper, the left end of feeder hopper is located the ring on right side inside, and the peanut can directly slide into the ring by the feeder hopper.

Further, still include the waste bin, the waste bin sets up in the left end of left ring, the second waste bin has been put to the downside of waste bin, makes unqualified peanut and other debris discharge effectively, can not influence the normal work of mechanism, also conveniently carries out subsequent handling to the waste material.

Further, the first waste bin is arranged at the bottom of the feeding frame, so that qualified and unqualified peanuts and other sundries can be separately processed, the mutual influence is avoided, and the requirements of classification and processing are met.

Further, the right side rear end of pay-off frame is equipped with first motor, and the right-hand member of the pivot of rear side and the output shaft fixed connection of first motor, the output of control switch group is connected to the input electricity of first motor, makes the conveyer belt can drive the peanut displacement that is located its upper end.

Compared with the prior art, the utility model has the beneficial effects that: the feeder of the peanut selecting machine has the following advantages:

1. The peanut is poured into the circular ring through the feeder hopper by the staff, then the rotation of the second motor is controlled through the control switch group, the second motor rotates through the transmission shaft control gear, the gear rotates to enable the toothed ring to rotate, the toothed ring further drives the circular ring to rotate, the connecting ring rotates with the material selecting pipes, the peanuts continuously tumble and rotate between the material selecting pipes, the peanuts with proper size finally fall above the conveyor belt through gaps between the material selecting pipes and gaps between the material selecting pipes, the rotating material selecting pipes and the material selecting pipes continuously tumble, continuous and efficient screening of the peanuts can be achieved, the working efficiency is greatly improved, as the pulley on the left side is lower than the pulley on the right side, the peanuts which do not meet the requirements move leftwards into the material selecting pipes and the material selecting pipes on the left side under the rotation of the material selecting pipes on the right side, the spacing between the two material selecting pipes on the right side and the spacing between the two material selecting pipes on the left side are sequentially increased from the right side to the left side, the peanuts meeting the size requirements are fed into different areas of the conveyor belt, the continuous and continuous tumbling motions of the rotating material selecting pipes are achieved, the manpower is reduced, and the probability of the automatic material selecting operation is also achieved, and the manpower is reduced.

2. The peanut sorting mechanism sends peanuts into between the set separating rules according to the size, the peanuts start to continuously move forwards on the conveying belt to reach the end point of the conveying belt, the peanuts fall between different partition boards under the limiting effect of the separating rules, the peanuts are blocked by the movable baffle when rolling forwards on the arc-shaped blanking table, finally, the movement of the arc-shaped blanking table is stopped, the falling speed of the peanuts can be effectively slowed down, the collision force suffered by the peanuts is furthest reduced, the integrity of the peanuts is ensured, the peanuts with different specifications are classified and separated, the peanuts are accurately classified into corresponding storage areas, the peanuts are effectively protected by various means and are accurately classified, and safe and efficient mechanical sorting of the peanuts is realized.

3. The staff can control the rotation of first motor through control switch group, and first motor passes through the output shaft and drives the rear end pivot and rotate, and the pivot rotates and drives the conveyer belt motion, makes the conveyer belt can drive the peanut displacement that is located its upper end, and evenly distributed's hole has been seted up to the area body of conveyer belt, can directly filter the impurity that the peanut carried, guarantees the cleanliness of peanut, has also avoided impurity blocking mechanism simultaneously, and equal fixedly connected with rubber circle of hole inner wall can be fine buffering and protection peanut's whereabouts, avoids it to receive mechanical impact and damage.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic view of the rear side of the present utility model;

Fig. 3 is a schematic cross-sectional view of the present utility model.

In the figure: the automatic feeding device comprises a feeding frame 1, a feeding mechanism 2, an arc-shaped blanking table 21, a partition plate 22, a material dividing ruler 23, a conveying belt 24, a movable baffle 25, a rotating shaft 26, a first motor 3, a control switch group 4, a pulley 5, a feeding hopper 6, a waste hopper 7, a second waste bin 8, a sorting mechanism 9, a circular ring 91, a toothed ring 92, a material selecting pipe 93, a gear 94, a connecting ring 95, a second motor 96, a first waste bin 10 and a boss 11.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-3, the present embodiment provides a technical solution: a feeder of a peanut selecting machine comprises a feeding frame 1, a feeding mechanism 2 and a sorting mechanism 9;

Feeding frame 1: the left and right sides of the upper surface of the feeding frame are respectively connected with pulleys 5 through bolts, the pulleys 5 on the left side are lower than the pulleys 5 on the right side, the right side of the upper surface of the feeding frame 1 is connected with a boss 11 through bolts, and the bottom of the feeding frame 1 is provided with a first waste box 10 which can collect various waste materials generated during feeding in a concentrated manner;

Feeding mechanism 2: the feeding mechanism 2 comprises an arc-shaped blanking table 21, a partition 22, a dividing ruler 23, a conveying belt 24, a movable baffle 25 and rotating shafts 26, wherein the rotating shafts 26 are respectively connected to the front end and the rear end of the inside of the feeding frame 1 in a rotating way, the two rotating shafts 26 are in transmission connection through the conveying belt 24, a first motor 3 is arranged at the rear end of the right side surface of the feeding frame 1, the right end of the rotating shaft 26 at the rear side is fixedly connected with an output shaft of the first motor 3, the input end of the first motor 3 is electrically connected with the output end of a control switch group 4, a worker can control the rotation of the first motor 3 through the control switch group 4, the first motor 3 drives the rear end rotating shaft 11 to rotate through the output shaft, the rotating shaft 11 drives the conveying belt 24 to move, the conveying belt 24 can drive peanuts at the upper end of the conveying belt 24 to move, uniformly distributed holes are formed in the belt body of the conveying belt 24, impurities carried by peanuts can be directly filtered, the cleanliness of the peanuts is ensured, the impurity blocking mechanisms are avoided, the inner walls of the holes are provided with rubber rings, the falling of the peanuts can be well buffered and protected, the peanuts are prevented from being damaged by mechanical impact, the arc-shaped blanking tables 21 are placed in front of the feeding frames 1, the baffle plates 22 are inserted into the evenly opened jacks in the arc-shaped blanking tables 21, the movable baffle plates 25 are inserted into the front sides of the upper ends of the arc-shaped blanking tables 21, the bottom ends of the movable baffle plates 25 are respectively provided with limiting openings corresponding to the baffle plates 22, the distributing bars 23 are respectively arranged at the upper ends of the four baffle plates 22, the distributing bars 23 are positioned above the conveying belt 24, the rear sides of the distributing bars 23 are respectively fixedly connected with the steel plates at the rear sides of the upper surfaces of the feeding frames 1, after the peanuts are respectively fed between the arranged distributing bars 23 by the sorting mechanisms 9 according to the sizes, the peanuts start to continuously move forwards on the conveying belt 24, when reaching the end point of the conveyor belt 24, the peanuts fall between different partition boards 22 under the limiting action of the separating ruler 23, the peanuts are blocked by the movable baffle plates 25 when the arc-shaped blanking table 21 rolls forwards, and finally the movement of the peanuts is stopped at the arc-shaped blanking table 21, so that the falling speed of the peanuts can be effectively slowed down, the collision force of the peanuts can be furthest reduced, the integrity of the peanuts is ensured, the peanuts with different specifications are classified and separated, the peanuts are accurately classified into corresponding storage areas, the peanuts are effectively protected and accurately classified by adopting various means, and the safe and efficient mechanical separation of the peanuts is realized;

Sorting mechanism 9: the sorting mechanism 9 comprises a circular ring 91, a toothed ring 92, a material selecting tube 93, a gear 94, a connecting ring 95 and a second motor 96, wherein the middle part of the outer side of the circular ring 91 is provided with circular ring sliding grooves, the circular ring 91 is in sliding connection with vertically adjacent pulleys 5 through the circular ring sliding grooves, the outer side of the circular ring 91 on the right side is fixedly connected with the toothed ring 92, the right side of the upper end of the feeding frame 1 is provided with a feeding hopper 6, the left end of the feeding hopper 6 is positioned in the circular ring 91 on the right side, the left side surface of the boss 11 is fixedly connected with the second motor 96, the output shaft of the second motor 96 is fixedly connected with the gear 94, the toothed ring 92 is meshed with the gear 94, the input end of the second motor 96 is electrically connected with the output end of the control switch group 4, the opposite inner sides of the two circular rings 91 are respectively provided with evenly distributed material selecting tubes 93, one group of circumferentially distributed material selecting tubes 93 is provided with the connecting ring 95 on one side of the material selecting tubes 93 close to the feeding frame 1, a uniformly distributed material selecting steel pipe is arranged between the two connecting rings 95, a worker pours peanuts into the circular ring 91 through the feed hopper 6, then the rotation of the second motor 96 is controlled through the control switch group 4, the second motor 96 controls the gear 94 to rotate through the transmission shaft, the gear 94 rotates to enable the toothed ring 92 to rotate, the toothed ring 92 further drives the circular ring 91 to rotate, the connecting rings 95 and the material selecting pipe 93 rotate, the peanuts continuously tumble and rotate between the material selecting pipes 93, finally the peanuts with proper size fall above the conveyor belt through gaps between the material selecting pipes 93, the rotating material selecting pipes 93 continuously tumble and move the peanuts, continuous and efficient screening of the peanuts can be realized, the working efficiency is greatly improved, the left pulley is lower than the right pulley, the peanuts with the sizes which do not meet the requirements leftwards move into the next group of material selecting pipes 93 under the rotation of the material selecting pipes 93, the spacing between the two adjacent material selecting pipes 93 on the right side, the spacing between the material selecting steel pipes and the spacing between the two adjacent material selecting pipes 93 on the left side are sequentially increased from right to left, after screening layer by layer, peanuts meeting the size requirement are sent into different areas of the conveyor belt 24, the peanuts which do not meet the requirement are sent into the leftmost waste hopper 7 by the continuously rotating material selecting pipe 93, and the waste falls into the second waste box 8 through the waste hopper 7, so that the waste can be effectively treated, the influence on the subsequent working procedures is avoided, the pollution of the waste is avoided, the whole screening process is automated by the rotation driven by a motor, the manual participation is not needed, the labor cost is reduced, and the probability of human error is also reduced;

Wherein: the upper surface right side of pay-off frame 1 has boss 11 through bolt threaded connection, and the right flank middle part of boss 11 is equipped with control switch group 4, and the external power source is connected to control switch group 4's input electricity, and the staff is stopped through control switch group 4 start-stop of first motor 3 and second motor 95, has simplified the operation process, makes the staff can convenient and fast ground control the operation of whole mechanism.

The utility model provides a feeder of a peanut selecting machine, which has the following working principle: during feeding, a worker pours peanuts into the circular ring 91 through the feeding hopper 6, then the rotation of the second motor 96 is controlled through the control switch group 4, the second motor 96 controls the gear 94 to rotate through the transmission shaft, the gear 94 rotates to enable the gear 92 to rotate, the gear 92 further drives the circular ring 91 to rotate, the circular ring 91 rotates to enable the connecting ring 95 to rotate with the material selecting pipes 93, the peanuts continuously tumble and rotate among the material selecting pipes, finally the peanuts with proper size fall above the conveyor belt 24 through gaps among the material selecting pipes 93 and gaps among the material selecting pipes, the rotary material selecting pipes 93 and the material selecting pipes continuously tumble, continuous and efficient screening of the peanuts can be realized, the working efficiency is greatly improved, as the pulley 5 on the left side is lower than the pulley 5 on the right side, the peanuts with the size which is not in accordance with the requirements leftwards move into the material selecting pipes 93 and the left material selecting pipes 93 under the rotation of the material selecting pipes 93 on the right side, the spacing between the two adjacent material selecting pipes 93 on the right side, the spacing between the material selecting steel pipes and the spacing between the two adjacent material selecting pipes 93 on the left side are sequentially increased from the right to the left, after the peanuts meeting the size requirement are sent into different areas of the conveyor belt 24, the peanuts which are not met with the requirement are continuously rotated by the material selecting pipes 93 and the material selecting steel pipes and sent into the leftmost waste hopper 7, and the waste materials slide into the second waste hopper 8 through the waste hopper 7, so that the waste materials can be effectively treated, the influence on the subsequent process is avoided, the waste materials are prevented from polluting, the whole screening process is automated by the rotation driven by a motor, the manual participation is not needed, the labor cost is reduced, the probability of manual errors is also reduced, meanwhile, the worker controls the rotation of the first motor 3 through the control switch group 4, the first motor 3 drives the rear-end rotating shaft 26 to rotate through the output shaft, the rotation of the rotating shaft 26 drives the conveying belt 24 to move, so that the conveying belt 24 can drive the peanuts at the upper end of the conveying belt to move, holes which are uniformly distributed are formed in the belt body of the conveying belt 24, impurities carried by the peanuts can be directly filtered, the cleanliness of the peanuts is guaranteed, an impurity blocking mechanism is avoided, rubber rings are arranged on the inner walls of the holes, the peanuts can be well buffered and protected from falling down, the peanuts are prevented from being damaged by mechanical impact, the sorting mechanism 9 sends the peanuts into the space between the set separating rods 23 according to the size, the peanuts start to continuously move forwards on the conveying belt 24, the peanuts reach the end of the conveying belt 24, the peanuts fall into different partition plates 22 under the limiting effect of the separating rods 23, the peanuts are blocked by the movable baffle plates 25 when the arc-shaped blanking table 21 rolls forwards, finally, the falling speed of the peanuts can be effectively slowed down, the falling force of the peanuts is reduced to the maximum extent, the integrity of the peanuts with different specifications is guaranteed, the peanuts are accurately sorted into corresponding storage areas, and the peanuts are effectively protected, and the peanuts are mechanically and accurately sorted.

It should be noted that, in the above embodiment, the first motor 3 and the second motor 95 may be a M9RZ90G4GGA/MY9G200B gear motor, and the control switch group 4 is provided with switch buttons corresponding to the first motor 3 and the second motor 95 one by one for controlling the switching operation thereof.

The foregoing description is only illustrative of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structures or equivalent processes or direct or indirect application in other related technical fields are included in the scope of the present utility model.

Claims

1. The utility model provides a feeder of peanut selection fruit machine which characterized in that: comprises a feeding frame (1), a feeding mechanism (2) and a sorting mechanism (9);

Feeding frame (1): the left side and the right side of the upper surface of the feeding frame are respectively connected with pulleys (5) through bolts, the pulleys (5) on the left side are lower than the pulleys (5) on the right side, and the right side of the upper surface of the feeding frame (1) is connected with a boss (11) through bolts;

feeding mechanism (2): the feeding device is arranged in the middle of the feeding frame (1);

Sorting mechanism (9): the circular ring sliding grooves on the left side and the right side of the circular ring sliding groove are respectively connected with two pulleys (5) which are vertically adjacent, and the sorting mechanism (9) is fixedly connected with the left side surface of the boss (11);

Wherein: the middle part of the right side surface of the boss (11) is provided with a control switch group (4), and the input end of the control switch group (4) is electrically connected with an external power supply.

2. A feeder for a peanut picker as in claim 1, wherein: feeding mechanism (2) are including arc unloading platform (21), baffle (22), divide dipperstick (23), conveyer belt (24), adjustable fender (25) and pivot (26), pivot (26) rotate respectively and connect in the inside front and back both ends of pay-off frame (1), and two pivots (26) are connected through conveyer belt (24) transmission, have seted up evenly distributed's hole on the area body of conveyer belt (24), arc unloading platform (21) are put in the place ahead of pay-off frame (1), all peg graft in the socket that evenly offered of the inside of arc unloading platform (21) have baffle (22), and the upper end front side of arc unloading platform (21) is pegged graft and is had adjustable fender (25), and limit mouthful corresponding with baffle (22) has been offered respectively to the bottom of adjustable fender (25), divides dipperstick (23) to set up in the upper end of four baffles (22) respectively, divide dipperstick (23) to be located the top of conveyer belt (24), divide the rear side of dipperstick (23) to be connected with the fixed steel sheet of the upper surface rear side of pay-off frame (1) respectively.

3. A feeder for a peanut picker as in claim 1, wherein: sorting mechanism (9) are including ring (91), ring gear (92), selection pipe (93), gear (94), go-between (95) and second motor (96), ring spout has all been seted up at the outside middle part of ring (91), ring (91) are through ring spout and vertical adjacent pulley (5) sliding connection, outside fixedly connected with ring gear (92) of ring (91) on right side, the left surface fixedly connected with second motor (96) of boss (11), the output shaft and the gear (94) fixed connection of second motor (96), ring gear (92) and gear (94) meshing are connected, the output of control switch group (4) is connected to the input electricity of second motor (96), the opposite medial surface of two rings (91) all is equipped with evenly distributed's selection pipe (93), circumferentially distributed's selection pipe (93) are a set of steel pipe, one side that a set of selection pipe (93) is close to pay-off frame (1) all is equipped with go-up go-between (95), be equipped with evenly distributed's steel pipe selection between two go-between (95).

4. A feeder for a peanut picker as claimed in claim 3, wherein: the right side of the upper end of the feeding frame (1) is provided with a feeding hopper (6), and the left end of the feeding hopper (6) is positioned inside a circular ring (91) on the right side.

5. A feeder for a peanut picker as claimed in claim 3, wherein: still include waste bin (7), waste bin (7) set up in the left end of left ring (91), second waste bin (8) are put to waste bin (7) downside.

6. A feeder for a peanut picker as in claim 1, wherein: the bottom of the feeding frame (1) is provided with a first waste box (10).

7. A feeder for a peanut picker as claimed in claim 2, wherein: the right side rear end of pay-off frame (1) is equipped with first motor (3), and the right-hand member of pivot (26) of rear side and the output shaft fixed connection of first motor (3), the output of control switch group (4) is connected to the input electricity of first motor (3).