CN103625995A - Constant-tension type cable drum device capable of flexibly winding cable - Google Patents
Constant-tension type cable drum device capable of flexibly winding cable Download PDFInfo
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- CN103625995A CN103625995A CN201310683805.6A CN201310683805A CN103625995A CN 103625995 A CN103625995 A CN 103625995A CN 201310683805 A CN201310683805 A CN 201310683805A CN 103625995 A CN103625995 A CN 103625995A
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Abstract
The invention relates to cable winding equipment and in particular relates to a constant-tension type cable drum device capable of flexibly winding a cable. The constant-tension type cable drum device comprises a drum, wherein the drum is connected with a speed adjustment device through a drum shaft in a transmission manner; the speed adjustment device comprises a box body and a planetary differential transmission mechanism arranged in the box body; the planetary differential transmission mechanism comprises an input shaft arranged on the box body in a rotatable manner, a speed adjustment shaft and a planetary frame; a braking mechanism is arranged between the speed adjustment shaft and the box body and comprises a rotary friction disk and a mobile friction disk; a compression spring jacks one side of the mobile friction disk; furthermore, the mobile friction disk is connected with an adjustment mechanism in a transmission manner; the adjustment mechanism comprises an adjustment seat and a pressing disk; a mobile gear is arranged on the drum shaft in a rotation-stopping manner and is also connected with a shifting rod in a transmission manner; the planetary differential transmission mechanism is connected with the drum shaft through the planetary frame in a transmission manner. According to the constant-tension type cable drum device capable of flexibly winding the cable, the problem that the cable is damaged by the conventional cable drum device is solved.
Description
Technical field
The present invention relates to cable and draw over to one's side equipment, particularly relate to a kind of permanent tension type cable drum device that can flexible take-up.
Background technology
Cable drum device, as its name suggests, is mainly used for the folding and unfolding to cable.It is widely used in electrical source of power being provided, controlling power supply or control signal for mobile device.
Current cable drum device mainly comprises reel and sliding mechanism, and wherein sliding mechanism adopts friction clutch, fluid coupling, magnetic coupling, stalling torque motor etc. more, and it is located in reel.
When using, reel is installed on mobile device and with mobile device and walks about.When take-up, all make the cable rolling linear velocity of reel be greater than the speed of travel of mobile device, rely on sliding mechanism to keep reel cable rolling linear velocity consistent with the walking line speed of mobile device, thus one side tensioning cable, prevent that on the other hand cable is pulled off, make the reliable take-up of reel.
Known by above description, in the course of the work, in order to keep cable to be reliably wound on reel, cable all maintains larger tension force to the cable drum device of current employing said structure all the time, and this has just aggravated the wearing and tearing of cable, has shortened service life.Therefore, current cable drum device exists damage cable, shortens the cable problem in service life.
Summary of the invention
The object of the present invention is to provide a kind of permanent tension type cable drum device that can flexible take-up, to solve the problem of existing cable drum device damage cable.
In order to address the above problem, of the present invention can flexible take-up permanent tension type cable drum device by the following technical solutions: permanent tension type cable drum device that can flexible take-up, comprise reel, described reel is connected with speed regulation device by its drum shaft, described speed regulation device comprises casing and is located at the planetary differential transmission device in casing, described planetary differential transmission device comprises that rotation is assemblied in the input shaft on casing, speed governing axle and pinion carrier, input shaft, the pivot center conllinear of speed governing axle and pinion carrier and parallel with drum shaft, between speed governing axle and casing, be provided with stop mechanism, stop mechanism comprises the pivoting friction dish being fixedly assemblied on speed governing axle and movably rotates and be assemblied in the mobile friction disc on speed governing axle vertically, a mobile friction disc dorsad side of pivoting friction dish is top-loaded with Compress Spring, in addition, mobile friction disc is in transmission connection to be useful on and orders about it along the axially movable regulating mechanism of speed governing axle, regulating mechanism comprises the adjustment seat that is fixed on casing and is enclosed within adjustment seat and forms the platen of screw-nut body with adjustment seat, in the drum shaft of reel only spinning be furnished with can be along its axial movable free gear, free gear is also in transmission connection to be useful on and orders about that it is movable so that the driving lever of its set tooth mesh when reel is worked and on platen in drum shaft, planetary differential transmission device is in transmission connection by its pinion carrier and drum shaft.
Described pinion carrier and reel synchrodrive link together.
Together with described pinion carrier is in transmission connection in the same way with reel.
In the spool of reel and pinion carrier, be respectively provided with gear, pinion carrier and reel are synchronizeed by the transition gear meshing with described gear simultaneously together with being in transmission connection in the same way.
On casing, be also equipped with the driving handle rotating for ordering about platen, Compress Spring top is contained between platen and mobile friction disc.
Described driving handle is in transmission connection by gear and platen.
Described driving lever is assemblied on casing by a rotating shaft and forms seesaw structure.
The inner of driving lever is connected with driver plate by connecting rod, and driving lever orders about free gear along drum shaft activity by driver plate.
Described planetary differential transmission device also comprises rotating and is assemblied in the tween drive shaft in pinion carrier, and tween drive shaft is parallel to each other with input shaft and be connected by gear transmission, and adjusting shaft is also in transmission connection by gear and tween drive shaft.
The reel of permanent tension type cable drum device that can flexible take-up due to this is connected with speed regulation device, in the casing of described speed regulation device, be provided with planetary differential transmission device, and input shaft, the pivot center conllinear of speed governing axle and pinion carrier, between speed governing axle and casing, be provided with stop mechanism, planetary differential transmission device is in transmission connection by its pinion carrier and reel, therefore, when in use, the suffered propulsive effort of reel can be distributed by planetary differential transmission device, thereby make reel only to cable, provide needed less pulling force, rely on the automatic speed changing of transmission device to complete the automatic adjusting to the required power of take-up, realize flexible take-up, in addition, free gear in drum shaft coordinates with Compress Spring and platen can also automatically regulate its tension force in reel take-up process along with the variation of outside barrel diameter, as can be seen here, this can flexible take-up permanent tension type cable drum device solved the problem of existing cable drum device damage cable.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the embodiment of permanent tension type cable drum device that can flexible take-up;
Fig. 2 is the embodiment of permanent tension type cable drum device that can the flexible take-up constitution diagram when cable is vertical;
Fig. 3 is the reeling condition figure that the embodiment of permanent tension type cable drum device that can flexible take-up tightens up rear cable;
Fig. 4 is the schematic diagram after a period of time of embodiment of permanent tension type cable drum device that can flexible take-up;
Fig. 5 is the constitution diagram of the free gear of embodiment of permanent tension type cable drum device that can flexible take-up when separated with platen;
Fig. 6 is the schematic diagram that the access point of power supply cable is positioned at the initial point of cable drum device forced stroke;
Fig. 7 is the schematic diagram that the access point of power supply cable is positioned at the mid point of cable drum device forced stroke.
The specific embodiment
The embodiment of permanent tension type cable drum device that can flexible take-up, Fig. 1 is the schematic diagram of cable drum of the present invention.It comprises casing 1,2K-H(WW) type positive sign planetary differential transmission device 2, and planet carrier gear 3, electrical motor 4, worm-gear speed reducer 5, transition gear 6, drum shaft gear 7, current colector rotate slide plate 8, current colector fixedly power lead 10, free gear 11, driver plate 12, connecting rod 13, rotating shaft 14, driving lever 15, reel 16, power supply cable 17, mobile friction disc 18, Compress Spring 19, adjustment seat 20, platen 21, driving handle 22, bearing 23, handle gear 24, the pivoting friction dish 25 of slide plate 9, mobile device self.In casing 1, add and have lubricating oil, guarantee in casing 1 that each rotatable parts are all the time in being subject to lubricating status.
2K-H(WW) type positive sign planetary differential transmission device 2 is comprised of input shaft I, sun wheel a and b, satellite gear d and g, pinion carrier H, output shaft II (adjusting shaft).The number of teeth of sun wheel a and b, satellite gear d and g is respectively Z
a, Z
b, Z
d, Z
g, the rotating speed that electrical motor 4 produces and moment are delivered to input shaft I after by worm-gear speed reducer 5, and the rotating speed of input shaft I is n
irevolutions per second, moment is M
inewton's millimeter.The rotating speed of input shaft I and moment are distributed to output shaft II and pinion carrier H by planetary differential transmission device 2.The rotating speed of output shaft II is n
iIrevolutions per second, moment is M
iInewton's millimeter; The rotating speed of pinion carrier H is n
hrevolutions per second, moment is M
hnewton's millimeter.The rotating speed of pinion carrier H and moment pass to output shaft III (drum shaft) after by gear 3, transition gear 6, gear 7, and the rotating speed of output shaft III is n
iIIrevolutions per second, moment M
iIInewton's millimeter.The right-hand member of output shaft III is installed with reel 16, left end is installed with current colector and rotates slide plate 8, and free gear 11 is arranged on the centre of output shaft III.Free gear 11 can rotate with output shaft III, also can in output shaft III, horizontally slip.Reel 16 is coiling and storage devices of power supply cable 17, and power supply cable 17 adopts single Multi-layer Store mode.When output shaft III is rotated, just be with movable reel 16 to rotate together with current colector rotation slide plate 8, power supply cable 17 is by after reel 16, through hole through axle III central authorities is connected with current colector rotation slide plate 8, the power lead 10 of mobile device self and current colector fixedly slide plate 9 are connected, and have realized fixedly power supply to the power supply of mobile device.Pivoting friction dish 25 rotates with output shaft II, and the end face pin of mobile friction disc 18 inserts in the end-face hole of adjustment seat 20, can not rotate.The periphery of adjustment seat 20 has screw thread, and the endoporus of platen 21 has screw thread, by screw thread, is connected with adjustment seat 20.Between mobile friction disc 18 and platen 21, Compress Spring 19 is installed.When output shaft III is rotated, also drive free gear 11 to rotate together, thereby drive platen 21 to rotate.When platen 21 rotates, transverse shifting, loosens or compresses Compress Spring 19 simultaneously, can change the friction force between mobile friction disc 18 and pivoting friction dish 25 friction disc pairs, thereby changes the resisting moment that output shaft II is subject to.When platen 21 rotates, can be with fixed handle gear 24 and driving handle 22 idle running.
Its principle of work is such:
Select the number of teeth of planet carrier gear 3, drum shaft gear 7, and allow its number of teeth equate, the rotating speed of pinion carrier H equals the rotation speed n of output shaft III
iII,
N
h=n
iIIformula (A)
Selection 2K-H(WW) Z in type positive sign planetary differential transmission device 2
a, Z
b, Z
d, Z
gthe number of teeth, make the PARAMETER ALPHA=Z of this planetary differential transmission device
dz
b/ Z
az
g=0.5.Rotating speed, the moment of input shaft I, output shaft II and pinion carrier H meet following relational expression:
N
i-0.5n
iI-0.5n
h=0 formula (B)
M
i=-2M
iI=-2M
hformula (C)
By formula (A) substitution formula (B), obtain:
N
i-0.5n
iI-0.5n
iII=0 formula (D)
From formula (B), when input shaft I can not transmission, the rotating speed of pinion carrier H and output shaft II equates, switched in opposite, so pinion carrier H is to the transmitting ratio n of output shaft II
h-II=1.From formula (C), when electrical motor 4 rotations, its output torque is when worm-gear speed reducer 5 amplifies backward input shaft I input torque, and input shaft I is averagely allocated to output shaft II and pinion carrier H by moment, therefore the active moment that output shaft II and pinion carrier H are subject to is equal all the time, i.e. M
iI=M
h.
If the inside and outside radius of mobile friction disc 18, pivoting friction dish 25 is respectively R
1, R
2millimeter, friction coefficient is μ
1, friction face number is Z, the elasticity modulus of Compress Spring 19 is κ
1newton/millimeter, amount of compression are L millimeter, rotation, the resisting moment M of mobile friction disc to output shaft II
iI' available following formula expression:
M
iI'=μ
1z κ
1lR
vnewton's millimeter formula (E)
R wherein
vfor equivalent friction radius of facing, unit: millimeter, its value is:
R
v=2(R
2 3-R
1 3)/[3(R
2 2-R
1 2)] formula (F)
If the nominal diameter of screw thread is d1 millimeter on adjustment seat 20 peripheries, moment coefficient is κ
2, the moment T that rotating platen 21 needs can express with following formula:
T=κ
2κ
1ld
1newton's millimeter formula (G)
The resisting moment M that output shaft II is subject to so
iI' with the ratio m that rotates the moment T of platen 21 needs be:
M=M
iI'/T=μ
1zR
v/ κ
2d
1formula (H)
The material of friction disc adopts hardened steel, μ
1value be between 0.05～0.1, adjustment seat 20 is to have lubricated precision machined surface, κ with the screw thread pair of platen 21
2value desirable 0.1, quantity and the parameters R of selecting friction face to count Z
1, R
2, d
1size, and will above each parameter substitution formula (H), can make M
iI' be the multiple of T.Through checking computations, m value is more reasonable between 20～40.
During reel take-up, the suffered minimum tension of power supply cable 17 is the gravity of the free overhang length part of cable, as shown in Figure 2, consider that cable must be wound around closely on reel, need to add to initial tension of cable, so the suffered minimum tension of cable is above two power sums, with N, represent unit: newton.While being real work, the unsettled length after cable tightens up is greater than its free overhang length, tightens up the reeling condition of rear cable as shown in Figure 3.
When the reference position of the equipment that is movably walking in action stroke, cable drum also, in incipient state as shown in Figure 6, is now adjusted the unsettled length of cable, and making the suffered tension force of cable is N newton.Use R
cylinderthe outer radius of a circle that contacts with cable of millimeter expression reel, uses d
2millimeter represents the diameter of power supply cable 17, the resisting moment M that reel is subject to
at the beginning of cylinder' be:
M
at the beginning of cylinder'=NR
just=N(R
cylinder+ d
2/ 2) newton's millimeter formula (I)
In reference position as shown in Figure 6, the amount of compression of establishing spring 19 is L
justmillimeter, according to formula (G), the moment T that rotating platen 21 needs is just: T
just=κ
2κ
1l
justd
1newton's millimeter.If the number of teeth of free gear 11 and platen 21 is respectively Z
11, Z
21, and Z
21=Z
11, free gear 11 is to the transmitting ratio n of platen 21
11-21for: n
11-21=Z
21/ Z
11=1, so the resisting moment that free gear 11 is subject to is:
M
at the beginning of 11'=T
just/ n
11-21=κ
2κ
1l
justd
1newton's millimeter formula (K)
Ignore various loss due to frictions, output shaft III is subject to resisting moment and is:
M
at the beginning of III'=M
at the beginning of cylinder'+M
at the beginning of 11'=N(R
cylinder+ d
2/ 2)+κ
2κ
1l
justd
1formula (L)
M
at the beginning of III' unit be newton's millimeter.
Because the number of teeth of planet carrier gear 3, drum shaft gear 7 is equal, ignore loss due to friction, the resisting moment that output shaft III is subject to will pass to pinion carrier H by equivalence.Therefore the resisting moment M that pinion carrier H is subject to
at the beginning of H' be:
M
at the beginning of H'=M
at the beginning of III'=N(R
cylinder+ d
2/ 2)+κ
2κ
1l is d just
1formula (M)
M
at the beginning of H' unit be newton's millimeter
According to formula (H), the resisting moment that now output shaft II is subject to is:
M
at the beginning of II'=mT
just=m κ
2κ
1l
justd
1newton's millimeter formula (N)
Make formula (M) equate with formula (N):
L
just=N(R
cylinder+ d
2/ 2)/[(m-1) κ
2κ
1d
1] formula (O)
In formula (O), because m value is between 20～40, therefore when replacing (m-1) with m, while ignoring the resisting moment of 21 pairs of output shaft III of platen, the error of L value just between 2.5%～5%, affect very little, therefore formula (O) can be reduced to:
L
just=N(R
cylinder+ d
2/ 2)/(m κ
2κ
1d
1) formula (P)
In sum, the initial compression amount that is N newton, Compress Spring 19 when cable stretch is L
just=N(R
cylinder+ d
2/ 2)/(m κ
2κ
1d
1) when millimeter, the resisting moment that output shaft II and pinion carrier H are subject to equates, if electrical power now, the active moment that the output shaft II of cable drum and pinion carrier H are subject to also equates.
The equipment of supposing to be movably walking has been walked forward t second from reference position, reel 16 with rotation speed n revolutions per second continuous take-up work t second, as shown in Figure 4.Because the power supply cable 17 on cable drum of the present invention adopts single Multi-layer Store mode on reel 16, so when reel 16 take-up, the increase speed of cable winding radius is d
2millimeter/turn.Through t after second cable winding radius increase to:
R
t=R
cylinder+ d
2/ 2+ntd
2formula (Q)
R
tunit be millimeter.
If tension force when now power supply cable 17 rolls tightly is still N, the resisting moment that reel is subject to is:
M
cylinder t'=NR
t=N(R
cylinder+ d
2/ 2+ntd
2) newton's millimeter formula (R)
Similarly, ignore platen 21 to the loss due to friction in the resisting moment impact of output shaft III and messenger chain, the resisting moment that pinion carrier H is subject to is:
M
ht'=M
cylinder t'=NR
t=N(R
cylinder+ d
2/ 2+ntd
2) newton's millimeter formula (S)
If the pitch of screw thread pair is p millimeter between adjustment seat 20 and platen 21, and order:
P=Nd
2/ (m κ
2κ
1d
1) formula (T)
Because free gear 11 is to the transmitting ratio n of platen 21
11-21=Z
21/ Z
11therefore=1, through t after second, the distance that platen 21 is moved to the left is ntp millimeter, the total compression amount L of Compress Spring 19
tfor: L
t=L
just+ ntp, L
tunit be millimeter.According to formula (G), the moment that rotating platen 21 needs is T
t=κ
2κ
1l
td
1newton's millimeter, according to formula (H), the friction moment of friction disc pair, friction disc pair to the resisting moment of output shaft II is:
M
iI t'=mT
t=m κ
2κ
1l
td
1=m κ
2κ
1d
1(L
just+ ntp) newton's millimeter formula (U)
By formula (P) and formula (T) substitution formula (U), obtain:
M
iI t'=N (R
cylinder+ d
2/ 2+ntd
2) newton's millimeter formula (V)
Comparison expression (S) and formula (V) are found, M
ht'=M
iI t'.After having determined the pitch p of screw thread pair by formula (T), when reel 16 is with speed n revolutions per second of continuous rotation t after second, the tension force when power supply cable 17 rolls tightly is during still for N, and the resisting moment of pinion carrier H and output shaft II still equates.Conversely, after having determined the pitch p of screw thread pair by formula (T), when reel 16 is with speed n revolutions per second of continuous rotation t after second, when the resisting moment being subject in pinion carrier H and output shaft II equates, the pulling force that power supply cable 17 is subject to is still N newton.
The principle of work of Here it is constant-tension cable reel of the present invention.
From formula (T), can find out tension force N newton and cable size d that the pitch p of screw thread pair and cable need
2millimeter is directly related, that is to say the constant-tension cable reel of the power supply cable special use that cable drum of the present invention is a certain model specification.
Its working process of collecting cable is such:
First adjust the initial compression amount of holddown spring 19.When the reference position of equipment at shift motion, cable drum is also in incipient state.Reel 16 is pierced into in one end of power supply cable 17, then couple together through rotating slide plate 8 with current colector after the through hole of output shaft III, cable overhang will be as shown in Figure 2.Now, as shown in Figure 5, the driving lever of cable drum of the present invention 15 is pushed to the left side, driving lever 15 will be around axle 14 rotations, drivening rod 13, thus driver plate 12 is moved right, driven gear 11 slides to the right, departs from engagement with platen 21.Rotating drive handle 22, is just with fixed handle gear 24 to rotate together, thereby drives platen 21 rotations, holddown spring 19.Under holddown spring pressure-acting, pivoting friction dish and mobile friction disc produce resisting moment by the rotation to output shaft II.For the power supply cable 17 of specific certain model specification, when cable stretch is N Newtonian time, can calculate the empty millimeter of due unsettled length L, as shown in Figure 6.First rotarily actuate the pressure that handle 22 loosens Compress Spring 19 completely, then opposite spin driving handle 22 compresses Compress Spring 19 a little, then, with hand rotating drum 16, makes its unsettled length be greater than L
empty mm, then decontrol again reel 16, reel 16 will rotate backward.When if reel 16 is slack, the unsettled length of cable equals L
empty mmthe initial compression amount of Compress Spring 19 has just been adjusted.The principle of adjusting is like this as follows: when electrical motor 4 is not switched on, input shaft I can not rotated under the self-locking action of worm-gear speed reducer 5, when rotating drum 16, output shaft III will drive output shaft II to rotate by drum shaft gear 7, transition gear 6, planet carrier gear 3, pinion carrier H so.Because the transmitting ratio n from drum shaft gear 7 to output shaft II
7-II=1, so the moment that output shaft III is subject to equals the moment that output shaft II is subject to, i.e. M
iII=M
iI, meet the condition that formula (O) is set up.Therefore, if the amount of compression of Compress Spring 19 is greater than L
justmillimeter, the resisting moment of output shaft II is greater than M
at the beginning of II', to loosen so after reel 16, cable overhang length must be greater than L
emptymillimeter, cable stretch must be greater than N newton; Otherwise, if the amount of compression of Compress Spring 19 is less than L
justmillimeter, the resisting moment of output shaft II is less than M
at the beginning of II', to loosen so after reel 16, cable overhang length must be less than L
emptymillimeter, cable stretch must be less than N newton.In a word, by the above adjustment mode, repeatedly adjust several times, cable stretch must be adjusted to and equal N newton, now the amount of compression of Compress Spring is just initial compression amount L
justmillimeter.
After the initial compression amount of Compress Spring 19 is adjusted, driving lever 15 is pushed to the right, make free gear 11 with platen 21 engagements, cable drum just can have been started working.In order to make the reliable take-up of cable drum, should be when the reference position shown in Fig. 6, the model specification of choose reasonable electrical motor 4, worm-gear speed reducer 5, in the situation that hypothesis output shaft II is not rotated, allow the convoluting speed of reel 16 be greater than slightly the moving velocity V of mobile device, like this, along with the increase of cable winding radius, the convoluting speed of reel 16 must increase gradually, has guaranteed cable drum reliably take-up all the time.At n
iI=0 o'clock, the rotating speed of output shaft III was with n
iII is fixedrevolutions per second expression.
In the reference position shown in Fig. 6, when mobile device with speed V walk forward, electrical motor 4 during electric rotation, the active moment that input shaft I is distributed to output shaft II and pinion carrier H equates, and the resisting moment that pinion carrier H and output shaft II are subject to also equates, output shaft II and pinion carrier H will rotate so, according to formula (D), the rotation speed n of output shaft III
iIImust be less than n
iII is fixed, when dropping to, the rotating speed of output shaft III is less than while tightening up the rotating speed that cable needs, the cable of tension will be relaxed, cable diminishes to the resisting moment of pinion carrier H, and gear 11 is while driving platens 21 rotate and be moved to the left, at any t after second, friction disc pair is all constantly equal to the resisting moment of output shaft II the resisting moment that pinion carrier H is subject to while rolling tightly cable, therefore, when the cable of tension is relaxed, the resisting moment that pinion carrier H is subject to is less than the resisting moment that output shaft II is subject to, so, the output torque of motor also can reduce, can only drive pinion carrier H to rotate, the rotating speed of pinion carrier H will be elevated to n
iIIfixed.In brief, after the cable of tension is relaxed, output shaft II reduces to zero by rotating speed under the lock torque effect in friction disc pair, and the rotating speed of output shaft III will be elevated to n
iIIfixed, accelerate take-up.When through t after second, cable is tightened up, and cable stretch reaches again N Newtonian time, the resisting moment that pinion carrier H is subject to equals again the resisting moment that friction disc imposes on output shaft II, the take-up speed of reel 16 can reduce again, repeats above-mentioned take-up process, the terminal until mobile device is walked.
The flexible take-up process of Here it is constant-tension cable reel of the present invention.
Cable drum of the present invention has two kinds of mode of operation.First kind of way is that the access point of power supply cable 17 is at the end points of mobile device shift motion.As shown in Figure 6.In this case, when mobile device moves from right to left, cable drum is packed up cable.Adjust as previously mentioned after the initial compression amount of Compress Spring 19, cable drum is just along with the permanent tension flexible take-up of movement of equipment.When mobile device moves from left to right, reel 16 rotates backward under cable tension, and cable drum is emitted cable.Now, electrical motor 4 is without power supply, and input shaft I can not rotated under the self-locking action of worm-gear speed reducer 5, n
i=0.Because the thrust that platen 21 loosens Compress Spring 19 is taken in rotating backward of reel 16 to, so the suffered tension force of cable is still definite value.Therefore output shaft III drives output shaft II to rotate, the rotating speed of output shaft II equals the rotating speed of output shaft III, and cable drum can be emitted cable.When mobile device stops midway, electrical motor 4 dead electricity, under the self-locking action of input shaft I worm-gear speed reducer 5, can not rotate, the stopping of equipment can not make cable pull reel 16 to rotate backward yet, output shaft II can not rotated under the brake action of friction moment yet, therefore, reel 16 can not rotate, and the cable of winding can not emitted automatically.Under this mode of operation, during take-up, flexible take-up; During cable laying, output shaft II rotating speed equates with output shaft III rotating speed, and cable drum is with permanent tension force N newton cable laying; When equipment stops, under the brake action of friction disc, the cable of winding can not emitted automatically.
The second way is that the access point of power supply cable 17 is at the mid point of equipment moving stroke, as shown in Figure 7.In this case, no matter equipment whichaway moves, and cable drum is always subject to allowing it rotate counterclockwise the active moment of collecting cable, and only, when equipment stops moving, electrical motor 4 is meeting dead electricity, and cable drum just can quit work.When equipment is in right endpoint as shown in Figure 7, to adjust as previously mentioned after the initial compression amount of Compress Spring 19, cable drum just can be started working.During take-up, normal take-up as previously mentioned; During cable laying, cable tension rotates backward reel 16, and the rotating speed of input shaft I and direction are all constant, therefore according to formula (D), output shaft II faster rotational speed, because cable tension is definite value always, the moment direction that cable imposes on reel 16 when collecting cable too, so the moment of input shaft I, output shaft II, output shaft III still meets formula (C).Under this mode of operation, during take-up, flexible take-up; During cable laying, output shaft II is accelerated to rotate, and cable drum is with permanent tension force N newton cable laying; When equipment stops, under the brake action of friction disc, the cable of winding can not emitted automatically.
Claims (9)
1. permanent tension type cable drum device that can flexible take-up, comprise reel, it is characterized in that, described reel is connected with speed regulation device by its drum shaft, described speed regulation device comprises casing and is located at the planetary differential transmission device in casing, described planetary differential transmission device comprises that rotation is assemblied in the input shaft on casing, speed governing axle and pinion carrier, input shaft, the pivot center conllinear of speed governing axle and pinion carrier and parallel with drum shaft, between speed governing axle and casing, be provided with stop mechanism, stop mechanism comprises the pivoting friction dish being fixedly assemblied on speed governing axle and movably rotates and be assemblied in the mobile friction disc on speed governing axle vertically, a mobile friction disc dorsad side of pivoting friction dish is top-loaded with Compress Spring, in addition, mobile friction disc is in transmission connection to be useful on and orders about it along the axially movable regulating mechanism of speed governing axle, regulating mechanism comprises the adjustment seat that is fixed on casing and is enclosed within adjustment seat and forms the platen of screw-nut body with adjustment seat, in the drum shaft of reel only spinning be furnished with can be along its axial movable free gear, free gear is also in transmission connection to be useful on and orders about that it is movable so that the driving lever of its set tooth mesh when reel is worked and on platen in drum shaft, planetary differential transmission device is in transmission connection by its pinion carrier and drum shaft.
2. permanent tension type cable drum device that can flexible take-up according to claim 1, is characterized in that, described pinion carrier and reel synchrodrive link together.
3. permanent tension type cable drum device that can flexible take-up according to claim 2, is characterized in that, together with described pinion carrier is in transmission connection in the same way with reel.
4. permanent tension type cable drum device that can flexible take-up according to claim 3, it is characterized in that, in the spool of reel and pinion carrier, be respectively provided with gear, pinion carrier and reel are synchronizeed by the transition gear meshing with described gear simultaneously together with being in transmission connection in the same way.
5. permanent tension type cable drum device that can flexible take-up according to claim 1, is characterized in that, is also equipped with the driving handle rotating for ordering about platen on casing, and Compress Spring top is contained between platen and mobile friction disc.
6. permanent tension type cable drum device that can flexible take-up according to claim 5, is characterized in that, described driving handle is in transmission connection by gear and platen.
7. permanent tension type cable drum device that can flexible take-up according to claim 1, is characterized in that, described driving lever is assemblied on casing by a rotating shaft and forms seesaw structure.
8. permanent tension type cable drum device that can flexible take-up according to claim 7, is characterized in that, the inner of driving lever is connected with driver plate by connecting rod, and driving lever orders about free gear along drum shaft activity by driver plate.
According to described in claim 1-8 any one can flexible take-up permanent tension type cable drum device, it is characterized in that, described planetary differential transmission device also comprises that rotation is assemblied in the tween drive shaft in pinion carrier, tween drive shaft is parallel to each other with input shaft and be connected by gear transmission, and adjusting shaft is also in transmission connection by gear and tween drive shaft.
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| CN106516915A (en) * | 2015-09-13 | 2017-03-22 | 沧州华海风电设备科技技术开发有限公司 | Force adjusting and outputting machine |
| CN106966238A (en) * | 2017-04-04 | 2017-07-21 | 温岭市仁全机械设备有限公司 | A kind of bridge equipment |
| CN107043049A (en) * | 2017-06-14 | 2017-08-15 | 佛山佛塑科技集团股份有限公司 | The winding/unwinding device of tubing |
| CN107128748A (en) * | 2017-04-04 | 2017-09-05 | 温岭市仁全机械设备有限公司 | A kind of novel bridge equipment |
| CN110077918A (en) * | 2019-05-30 | 2019-08-02 | 晋中学院 | A kind of control system according to shuttle car speed closed loop folding and unfolding cable |
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| CN110077918A (en) * | 2019-05-30 | 2019-08-02 | 晋中学院 | A kind of control system according to shuttle car speed closed loop folding and unfolding cable |
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