CN205144947U

CN205144947U - A movement track control mechanism for medical bed

Info

Publication number: CN205144947U
Application number: CN201520988822.5U
Authority: CN
Inventors: 张合明
Original assignee: Individual
Current assignee: Individual
Priority date: 2015-12-02
Filing date: 2015-12-02
Publication date: 2016-04-13
Anticipated expiration: 2025-12-02

Abstract

The utility model discloses a movement track control mechanism for medical bed, its characterized in that: including trajectory control wheel, first control ware, the second controllor, third controller, first control ware, the second controllor, third controller all include depression bar, pneumatic cylinder and hydraulic clutch, on the piston rod of the fixed hydraulic pressure jar of depression bar, the utility model has the advantages of simple structure and reasonable design, can realize the power of same input shaft and import the switching that realizes a plurality of motions of medical bed action down, equipment operation is smooth -going, has better practical function.

Description

For the movement locus controlling organization of medical bedstead

Technical field

This utility model relates to a kind of movement locus controlling organization for medical bedstead.

Background technology

Medical bedstead, refers to the utensil or other article that are used in human body, and its effect for body surface is not obtain by the means of pharmacology, immunology or metabolism, but these means may be had to participate in and play certain assosting effect; Its use is intended to reach following expection object: (one) prevention of disease, diagnosis, treatment, monitoring, alleviation; (2) to damage or the diagnosis of deformity, treatment, monitoring, alleviation, compensation.In the process of the patient of existing treatment physical palsy, in order to reduce the bed rest time of patient, it is made to keep joyful mood, usual needs are accompanied and attended to and are embraced on wheelchair by patient, outdoor activity is carried out by invalid carriage belt patient, and the process of patient being embraced wheelchair of accompanying and attending to compares effort, for the patient that some body weight is heavier, accompany and attend to and be often difficult to accomplish this point, therefore a kind of movement locus controlling organization for medical bedstead how is designed, make the motion of medical bedstead can when same power shaft carries out power input, realize the switching of the direction of motion, become the technical problem that industry technical staff asks for solution.

Utility model content

The purpose of this utility model is to overcome above shortcomings in prior art, and provides a kind of movement locus controlling organization for medical bedstead of reasonable in design.

The technical scheme in the invention for solving the above technical problem is:

A kind of movement locus controlling organization for medical bedstead, it is characterized in that: comprise TRAJECTORY CONTROL wheel, first controller, second controller, 3rd controller, described first controller, second controller, 3rd controller includes depression bar, hydraulic cylinder and hydraulic clutch, on the piston rod of depression bar fixative cylinder pressure, hydraulic cylinder is connected to hydraulic clutch through oil pipe, described TRAJECTORY CONTROL wheel is arranged on TRAJECTORY CONTROL nut, TRAJECTORY CONTROL nut is arranged on TRAJECTORY CONTROL screw rod, TRAJECTORY CONTROL nut is slidably mounted on translation base, the hydraulic cylinder of the 3rd controller is fixed on translation base, the hydraulic cylinder of the first controller, the hydraulic cylinder of second controller is slidably mounted on lifting pedestal, translation base is provided with the first controller track, second controller track, the hydraulic cylinder of described first controller is provided with two the first controller control wheels, two the first controller control wheels are against the both sides of the first controller track respectively, the hydraulic cylinder of described second controller is provided with two second controller control wheels, two second controller control wheels are against the both sides of second controller track respectively, first controller track is made up of the connect successively first left control section and the first right control section, first left control section and the first right control section control the hydraulic cylinder of the first controller respectively away from TRAJECTORY CONTROL wheel and near TRAJECTORY CONTROL wheel, first controller track is by the connect successively second left control section, in second, control section and the second right control section are formed, second left control section, the hydraulic cylinder that in second, control section and the second right control section control second controller is respectively taken turns near TRAJECTORY CONTROL, away from TRAJECTORY CONTROL wheel and near TRAJECTORY CONTROL wheel.

As preferably, hydraulic clutch comprises rotating shaft, cylinder body, piston, first piston bar, first travelling gear, second travelling gear, first friction plate and the second friction plate, first travelling gear is fixed in rotating shaft, described piston is slidably mounted in cylinder body, hydraulic oil is provided with in cylinder body, one end of described first piston bar is fixed on one end of piston, described first friction plate is fixed on the other end of described first piston bar, piston, first piston bar, first friction plate offers the rotating shaft installing hole for wearing rotating shaft, realize connecting by spline between described piston and rotating shaft, thus make piston phase countershaft radial direction fixing and piston can slide axially by phase countershaft, hydraulic cylinder is connected to cylinder body through oil pipe, second friction plate is fixed on the second travelling gear, second travelling gear is rotatably installed in rotating shaft, second travelling gear of the first controller and the engagement of the first driven wheel, second travelling gear of second controller and the engagement of the second driven wheel, first travelling gear of the first controller and the first travelling gear of second controller engage with the first balladeur train, first travelling gear and the drive screw of the 3rd controller link, second travelling gear and the translating screw of described 3rd controller link, the hydraulic clutch of second controller comprises the second piston rod, 3rd travelling gear, 4th travelling gear, 3rd friction plate and the 4th friction plate, one end of second piston rod is fixed on the other end of piston, the other end of the second piston rod fixes the 3rd friction plate, 4th friction plate is fixed on the 3rd travelling gear, 3rd travelling gear is rotatably installed in rotating shaft, the gear shaft of the second driven wheel is fixed with the 5th travelling gear, 3rd travelling gear, 4th travelling gear, 5th travelling gear engages successively, the two ends of the cylinder body of described second controller are connected to two interfaces of three-way diverter valve each via independent oil pipe, another interface of three-way diverter valve is connected to the hydraulic cylinder of second controller.

This utility model compared with prior art, has the following advantages and effect: structure is simple, reasonable in design, and realize the switching of the multiple athletic performance of medical bedstead under can realizing the power input of same power shaft, equipment operation is smooth-going, has good practical function.

Accompanying drawing explanation

Fig. 1 is the structural representation under the medical bedstead of this utility model embodiment is in original state.

Structural representation when Fig. 2 is the first bed board part, the second bed board part rotation of the medical bedstead of this utility model embodiment.

Fig. 3 is the mounting structure schematic diagram of this utility model embodiment first driving gear axle.

Fig. 4 is the mounting structure schematic diagram of this utility model embodiment first balladeur train.

Fig. 5 is the mounting structure schematic diagram of this utility model embodiment the 3rd driven wheel.

Fig. 6 is the structural representation of step 1 in this utility model embodiment medical bedstead movement locus implementation method.

Fig. 7 is the structural representation of step 2 in this utility model embodiment medical bedstead movement locus implementation method.

Fig. 8 is the structural representation of step 3 in this utility model embodiment medical bedstead movement locus implementation method.

Fig. 9 is the structural representation of step 4 in this utility model embodiment medical bedstead movement locus implementation method.

Figure 10 is the mounting structure schematic diagram of this utility model embodiment first bed board part.

Figure 11 is the structural representation of this utility model embodiment ratchet.

Detailed description of the invention

Below in conjunction with accompanying drawing, also by embodiment, the utility model is described in further detail, and following examples are that this utility model is not limited to following examples to explanation of the present utility model.

See Fig. 1-Figure 11, a kind of medical bedstead movement locus of the present embodiment implementation method, described medical bedstead comprises bedrest 1, bed board 2 and transfer device, described bed board 2 is fixed on bedrest 1, described transfer device comprises driving mechanism, rotating mechanism, elevating mechanism, translation mechanism and controlling organization, bed board 2 comprises bed board main body 21, for supporting the first bed board part 22 at back and the second bed board part 23 for supporting knee joint rear portion, bed board main body 21 offer for embedding the first bed board part 22, the mounting groove 24 of the second bed board part 23, the both sides of the first bed board part 22 arrange two pieces for what insert human body axillary fossa place and put forth effort plate 25, driving mechanism comprises the drive screw 31 be rotatably installed on bedrest 1, the end of drive screw 31 is provided with rolling disc 32, rolling disc 32 is provided with turning handle 33, described rotating mechanism comprises swinging mounting 41, first gripper shoe 42, second gripper shoe 43, support roller 44, first gripper shoe gear 45 and the second gripper shoe gear 46, described first gripper shoe 42, second gripper shoe 43 is in circular arc, and the center of circle of the first gripper shoe 42, the center of circle of the second gripper shoe 43 coincides, thus adapt to human body feature (health and lower limb are all take buttocks as the point of rotation), first bed board part 22 and the second bed board part 23 are separately fixed at the upper end of the first gripper shoe 42, the upper end of the second gripper shoe 43, the left and right sides of described first gripper shoe 42 and the second gripper shoe 43 is provided with the guide rail 48 in circular arc, the inside and outside both sides of guide rail 48 all arrange support roller 44, support roller 44 is pressed on guide rail 48, the inner side of described first gripper shoe 42 or arranged outside have the first tooth bar 471 in circular arc, first tooth bar 471 and the first gripper shoe gear 45 engage, the inner side of described second gripper shoe 43 or arranged outside have the second tooth bar 472 in circular arc, second tooth bar 472 and the second gripper shoe gear 46 engage, support roller 44, first gripper shoe gear 45 and the second gripper shoe gear 46 are rotatably installed on swinging mounting 41, the side of relative first gripper shoe 42 of guide rail 48 and the second gripper shoe 43 is inclined to set, thus improve the stability of strutting system of support roller 44, first gripper shoe gear 45 and the second gripper shoe gear 46 are separately positioned on the both sides of the first driven wheel 49 and the first gripper shoe gear 45 and the second gripper shoe gear 46 all with the first driven wheel 49 engage, elevating mechanism comprises lifting pedestal 51, lifting nut, lifting screw 52, second driven wheel 53, described lifting nut is rotatably installed on swinging mounting 41, described lifting nut and lifting screw 52 pass through threaded engagement, described second driven wheel 53 drives lifting nut, lifting screw 52 in vertically arranging and being rotatably installed on lifting pedestal 51, thus makes swinging mounting 41 vertically to move back and forth by OQ t base 51, described translation mechanism comprises translation base 61, translational nut, translating screw 62 and the 3rd driven wheel 63, described translational nut is rotatably installed on lifting pedestal 51, described translational nut, translating screw 62 pass through threaded engagement, described 3rd driven wheel 63 drives translating screw 62, described translating screw 62 is horizontally disposed with and is rotatably installed on translation base 61, thus makes lifting pedestal 51 can relative translation base 61 horizontal reciprocating movement, controlling organization comprises TRAJECTORY CONTROL wheel 711, first controller 72, second controller 73, 3rd controller 74, described first controller 72, second controller 73, 3rd controller 74 includes depression bar 81, hydraulic cylinder 82 and hydraulic clutch 83, on the piston rod of depression bar 81 fixative cylinder pressure 82, hydraulic cylinder 82 is connected to hydraulic clutch 83 through oil pipe, described TRAJECTORY CONTROL wheel 711 is arranged on TRAJECTORY CONTROL nut 712, TRAJECTORY CONTROL nut 712 is arranged on TRAJECTORY CONTROL screw rod 713, TRAJECTORY CONTROL nut 712 is slidably mounted on translation base 61, the hydraulic cylinder 82 of the 3rd controller 74 is fixed on translation base 61, the hydraulic cylinder 82 of the first controller 72, the hydraulic cylinder 82 of second controller 73 is slidably mounted on lifting pedestal 51, translation base 61 is provided with the first controller track 714, second controller track 715, first controller track 714 in the present embodiment, second controller track 715 is same controller track, the hydraulic cylinder 82 of described first controller 72 is provided with two the first controller control wheels 716, two the first controller control wheels 716 are against the both sides of the first controller track 714 respectively, the hydraulic cylinder 82 of described second controller 73 is provided with two second controller control wheels 717, two second controller control wheels 717 are against the both sides of second controller track 715 respectively, first controller track 714 is made up of the connect successively first left control section 7141 and the first right control section 7142, first left control section 7141 and the first right control section 7142 control the hydraulic cylinder 82 of the first controller 72 respectively away from TRAJECTORY CONTROL wheel 711 and near TRAJECTORY CONTROL wheel 711, first controller track 714 is by the connect successively second left control section 7151, in second, control section 7152 and the second right control section 7153 are formed, second left control section 7151, in second, control section 7152 and the second right control section 7153 control the hydraulic cylinder 82 of second controller 73 respectively near TRAJECTORY CONTROL wheel 711, away from TRAJECTORY CONTROL wheel 711 and near TRAJECTORY CONTROL wheel 711, swinging mounting 41 is rotatablely equipped with the first balladeur train 91, lifting pedestal 51 is rotatablely equipped with the first driving gear axle 92 and the second balladeur train 93, first balladeur train 91 is meshed with the first driving gear axle 92, translation base 61 is rotatablely equipped with the second driving gear axle 94, second balladeur train 93 and the second driving gear axle 94 are meshed, second driving gear axle 94, TRAJECTORY CONTROL screw rod 713 and drive screw 31 link, translating screw 62 realizes interlock via the hydraulic clutch 83 of the 3rd controller 74 and drive screw 31, first balladeur train 91 realizes interlock via the hydraulic clutch 83 of the first controller 72 and the first driven wheel 49, first balladeur train 91 realizes interlock via the hydraulic clutch 83 of second controller 73 and the second driven wheel 53, medical bedstead movement locus implementation method comprises following performing step:

1) control drive screw 31 to rotate, described drive screw 31 drives TRAJECTORY CONTROL to take turns 711 rectilinear movements, first TRAJECTORY CONTROL wheel 711 is pressed on the depression bar 81 of the first controller 72, thus promote the hydraulic cylinder 82 of the first controller 72, produce oil pressure, drive the hydraulic clutch 83 of the first controller 72 movable, thus realize the interlock of the first balladeur train 91 and the first driven wheel 49, drive screw 31 is via the second driving gear axle 94, second balladeur train 93, first driving gear axle 92 drives the first balladeur train 91, thus final first driven wheel 49 that drives rotates, thus drive the first gripper shoe gear 45 and the second gripper shoe gear 46 to rotate, the rotation direction of the first gripper shoe gear 45 and the second gripper shoe gear 46 is contrary, thus drive the first gripper shoe 42, second gripper shoe 43 is rotated towards contrary direction, thus the first bed board part 22 rotates human body back, second bed board part 23 rotates human thigh,

2) when TRAJECTORY CONTROL is taken turns on 711 rectilinear motions to the depression bar 81 of second controller 72, the depression bar 81 of TRAJECTORY CONTROL wheel 711 and the first controller 72 departs from, thus the hydraulic clutch 83 of the first controller 72 is movable, disconnect the interlock of the first balladeur train 91 and the first driven wheel 49, TRAJECTORY CONTROL wheel 711 promotes the hydraulic cylinder 82 of second controller 73, produce oil pressure, drive the hydraulic clutch 83 of second controller 73 movable, thus realize the interlock of the first balladeur train 91 and the second driven wheel 53, thus drive lifting nut to rotate, thus lift swinging mounting 41, thus lift patient,

3) when TRAJECTORY CONTROL is taken turns on 711 rectilinear motions to the depression bar 81 of the 3rd controller 74, the depression bar 81 of TRAJECTORY CONTROL wheel 711 and second controller 73 departs from, thus the hydraulic clutch 83 of second controller 73 is movable, disconnect the interlock of the first balladeur train 91 and the second driven wheel 53, TRAJECTORY CONTROL wheel 711 promotes the hydraulic cylinder 82 of the 3rd controller 74, produce oil pressure, drive the hydraulic clutch 83 of the 3rd controller 74 movable, thus realize the interlock of translating screw 62 and drive screw 31, thus promotion lifting pedestal 51 relative translation base 61 moves, when the first bed board part 22, time second bed board part 23 drives patient to move to above wheelchair, TRAJECTORY CONTROL wheel 711 departs from the depression bar 81 of the 3rd controller 74, and in lifting pedestal 51 relative translation base 61 moving process, first left control section 7141 controls the hydraulic cylinder 82 of the first controller 72 away from TRAJECTORY CONTROL wheel 711, in second, control section 7152 controls the hydraulic cylinder 82 of second controller 73 away from TRAJECTORY CONTROL wheel 711, thus avoid in lifting pedestal 51 relative translation base 61 moving process, the depression bar 81 of the first controller 72, the depression bar 81 of second controller 73 and contacting of TRAJECTORY CONTROL wheel 711, and make the depression bar 81 of second controller 73 again revert to TRAJECTORY CONTROL wheel 711 positions that can contact by the second left control section 7151,

4) when TRAJECTORY CONTROL is taken turns on 711 rectilinear motions to the depression bar 81 of second controller 73, TRAJECTORY CONTROL wheel 711 withstands a reversal valve, reversal valve is arranged on the oil pipe on the hydraulic cylinder 82 of second controller 73 and hydraulic cylinder 82 hydraulic clutch 83 of second controller 73, hydraulic cylinder 82 hydraulic clutch 83 is driven, thus realize the interlock of the first balladeur train 91 and the second driven wheel 53, thus drive lifting nut to rotate backward, thus patient is placed on the seat support of wheelchair, push wheelchair open;

5) rotate backward drive screw 31, the first bed board part 22, second bed board 2 progressively returns to initial position and snaps in mounting groove 24.

As preferably, hydraulic clutch 83 comprises rotating shaft 831, cylinder body 8321, piston 8322, first piston bar 8323, first travelling gear 8331, second travelling gear 8332, first friction plate 8341 and the second friction plate 8342, first travelling gear 8331 is fixed in rotating shaft 831, described piston 8322 is slidably mounted in cylinder body 8321, hydraulic oil is provided with in cylinder body 8321, one end of described first piston bar 8323 is fixed on one end of piston 8322, described first friction plate 8341 is fixed on the other end of described first piston bar 8323, piston 8322, first piston bar 8323, first friction plate 8341 offers rotating shaft 831 installing hole for wearing rotating shaft 831, realize connecting by spline between described piston 8322 and rotating shaft 831, thus make piston 8322 phase countershaft 831 radial direction fixing and piston 8322 can slide axially by phase countershaft 831, hydraulic cylinder 82 is connected to cylinder body 8321 through oil pipe, second friction plate 8342 is fixed on the second travelling gear 8332, second travelling gear 8332 is rotatably installed in rotating shaft 831, second travelling gear 8332 of the first controller 72 and the first driven wheel 49 engage, second travelling gear 8332 of second controller 73 and the second driven wheel 53 engage, first travelling gear 8331 of the first controller 72 and the first travelling gear 8331 of second controller 73 engage with the first balladeur train 91, first travelling gear 8331 of the 3rd controller 74 links with drive screw 31, second travelling gear 8332 of described 3rd controller 74 links with translating screw 62, the hydraulic clutch 83 of second controller 73 comprises the second piston rod 8324, 3rd travelling gear 8333, 4th travelling gear 8334, 3rd friction plate 8343 and the 4th friction plate 8344, one end of second piston rod 8324 is fixed on the other end of piston 8322, the other end of the second piston rod 8324 fixes the 3rd friction plate 8343, 4th friction plate 8344 is fixed on the 3rd travelling gear 8333, 3rd travelling gear 8333 is rotatably installed in rotating shaft 831, the gear shaft of the second driven wheel 53 is fixed with the 5th travelling gear, 3rd travelling gear 8333, 4th travelling gear 8334, 5th travelling gear 8335 engages successively, the two ends of the cylinder body 8321 of described second controller 73 are connected to two interfaces of three-way diverter valve 835 each via independent oil pipe, another interface of three-way diverter valve 835 is connected to the hydraulic cylinder 82 of second controller 73.Adopt this structure, make it possible to namely can realize the continuous rotation of the first bed board part 22, second bed board part 23, rise, translation, decline, vertical motion towards a direction continuous rotating drive screw rod 31, improve the seriality of action.

As preferably, when TRAJECTORY CONTROL takes turns 711 rectilinear motions to the tail end of the depression bar 81 of the 3rd controller 74 time, second left control section 7151 makes the depression bar 81 of second controller 73 just again revert to TRAJECTORY CONTROL and takes turns 711 positions that can contact, the depression bar 81 of second controller 73 near the tail end of the depression bar 81 of the 3rd controller 74, thus improves the continuity of motion.

As preferably, one end of first bed board part 22 is rotatably installed in the first gripper shoe 42, first bed board part 22 offers and puts forth effort board slot 261, that puts forth effort that plate 25 is slidably mounted on the first bed board part 22 puts forth effort in board slot 261, be provided with in first bed board part 22 for by put forth effort plate 25 head into put forth effort board slot 261 put forth effort plate 25 stage clip, put forth effort board slot 261 offers and put forth effort plate 25 draw-in groove, be provided with for snapping in the first draw-in groove inserted link 262 putting forth effort plate 25 draw-in groove in first bed board part 22, first draw-in groove inserted link 262 is provided with for the first draw-in groove inserted link 262 being headed into the first inserted link stage clip putting forth effort plate 25 draw-in groove, first gripper shoe 42 offers gripper shoe draw-in groove, the second draw-in groove inserted link 263 for snapping in gripper shoe draw-in groove is provided with in first bed board part 22, second draw-in groove inserted link 263 is provided with the second inserted link stage clip for the second draw-in groove inserted link 263 being headed into gripper shoe draw-in groove, one end of first bed board part 22 is rotatablely equipped with operator 266, operator passes through head rod 264 266, second connection tube connects the first draw-in groove inserted link 262 respectively, second draw-in groove inserted link 263, thus can rotating operation hands 266 time, make to put forth effort plate 25 to spring into and put forth effort plate 25 draw-in groove, and rotation first gripper shoe 42 can be operated, thus make to facilitate the first bed board part 22 and patient to depart from.

First driven wheel is fixed with ratchet 101, ratchet 101 is other is provided with ratchet 102, ratchet 102 is rotatably installed on swinging mounting, swinging mounting is provided with for driving ratchet towards the insurance oil cylinder 103 rotated away from ratchet direction, insurance oil cylinder 103 is connected to the hydraulic cylinder of the first controller, thus make when TRAJECTORY CONTROL wheel moves on the depression bar of the first controller, insurance hydraulic oil cylinder driving ratchet is towards rotating away from ratchet direction, thus the first driven wheel can be rotated, on the depression bar of TRAJECTORY CONTROL wheel disengaging first controller, ratchet is locked, thus the first driven wheel can not be rotated backward, thus ensure the first gripper shoe, second gripper shoe can not be subject to Gravitational sliding.

Above content described in this description is only to the explanation of this utility model example.This utility model person of ordinary skill in the field can make various amendment or supplements or adopt similar mode to substitute to described specific embodiment; only otherwise depart from the content of this utility model description or surmount this scope as defined in the claims, protection domain of the present utility model all should be belonged to.

Claims

1. the movement locus controlling organization for medical bedstead, it is characterized in that: comprise TRAJECTORY CONTROL wheel, first controller, second controller, 3rd controller, described first controller, second controller, 3rd controller includes depression bar, hydraulic cylinder and hydraulic clutch, on the piston rod of depression bar fixative cylinder pressure, hydraulic cylinder is connected to hydraulic clutch through oil pipe, described TRAJECTORY CONTROL wheel is arranged on TRAJECTORY CONTROL nut, TRAJECTORY CONTROL nut is arranged on TRAJECTORY CONTROL screw rod, TRAJECTORY CONTROL nut is slidably mounted on translation base, the hydraulic cylinder of the 3rd controller is fixed on translation base, the hydraulic cylinder of the first controller, the hydraulic cylinder of second controller is slidably mounted on lifting pedestal, translation base is provided with the first controller track, second controller track, the hydraulic cylinder of described first controller is provided with two the first controller control wheels, two the first controller control wheels are against the both sides of the first controller track respectively, the hydraulic cylinder of described second controller is provided with two second controller control wheels, two second controller control wheels are against the both sides of second controller track respectively, first controller track is made up of the connect successively first left control section and the first right control section, first left control section and the first right control section control the hydraulic cylinder of the first controller respectively away from TRAJECTORY CONTROL wheel and near TRAJECTORY CONTROL wheel, first controller track is by the connect successively second left control section, in second, control section and the second right control section are formed, second left control section, the hydraulic cylinder that in second, control section and the second right control section control second controller is respectively taken turns near TRAJECTORY CONTROL, away from TRAJECTORY CONTROL wheel and near TRAJECTORY CONTROL wheel.

2. the movement locus controlling organization for medical bedstead according to claim 1, it is characterized in that: hydraulic clutch comprises rotating shaft, cylinder body, piston, first piston bar, first travelling gear, second travelling gear, first friction plate and the second friction plate, first travelling gear is fixed in rotating shaft, piston is slidably mounted in cylinder body, hydraulic oil is provided with in cylinder body, one end of first piston bar is fixed on one end of piston, first friction plate is fixed on the other end of first piston bar, piston, first piston bar, first friction plate offers the rotating shaft installing hole for wearing rotating shaft, realize connecting by spline between piston and rotating shaft, thus make piston phase countershaft radial direction fixing and piston can slide axially by phase countershaft, hydraulic cylinder is connected to cylinder body through oil pipe, second friction plate is fixed on the second travelling gear, second travelling gear is rotatably installed in rotating shaft, second travelling gear of the first controller and the engagement of the first driven wheel, second travelling gear of second controller and the engagement of the second driven wheel, first travelling gear of the first controller and the first travelling gear of second controller engage with the first balladeur train, first travelling gear and the drive screw of the 3rd controller link, second travelling gear and the translating screw of described 3rd controller link, the hydraulic clutch of second controller comprises the second piston rod, 3rd travelling gear, 4th travelling gear, 3rd friction plate and the 4th friction plate, one end of second piston rod is fixed on the other end of piston, the other end of the second piston rod fixes the 3rd friction plate, 4th friction plate is fixed on the 3rd travelling gear, 3rd travelling gear is rotatably installed in rotating shaft, the gear shaft of the second driven wheel is fixed with the 5th travelling gear, 3rd travelling gear, 4th travelling gear, 5th travelling gear engages successively, the two ends of the cylinder body of described second controller are connected to two interfaces of three-way diverter valve each via independent oil pipe, another interface of three-way diverter valve is connected to the hydraulic cylinder of second controller.