CN109244451A - A kind of efficient Preparation equipment of lithium battery lithium-rich manganese-based anode material nano-powder - Google Patents

Abstract

The invention discloses a kind of efficient Preparation equipments of lithium battery lithium-rich manganese-based anode material nano-powder, including fuselage, the first sliding cavity being arranged in the fuselage and the fixed block that the body upper is arranged in, it can slide up and down in first sliding cavity and be provided with sliding shoe, be fixedly installed first motor in the sliding shoe；Device structure of the invention is simple, it is easy to operate, moving down for fixed plate is driven by using power source, facilitate the disassembly of agitator and the taking-up of solution, the rotation of agitator is driven to accelerate rate of dissolution using the same power source simultaneously, the sealing for being slowly added to be completed at the same time stirring container of solid matter is completed while above-mentioned two function switch simultaneously, improve transfer efficiency, utilize buckle clamping agitator, prevent agitator from causing to throw away due to high-speed rotation, improving can device security, it cooperates and does not influence between each process, improve device practical performance.

Description

A kind of efficient Preparation equipment of lithium battery lithium-rich manganese-based anode material nano-powder

Technical field

The present invention relates to field of lithium, the efficient system of specifically a kind of lithium battery lithium-rich manganese-based anode material nano-powder Standby equipment.

Background technique

With the development of science and technology, social progress, country promotes always high-tech development, in field of lithium, one Directly there are a relatively difficult technical problem, be exactly lithium-rich manganese-based anode material nano-powder predecessor prepare when, due to Mixing vessel is simple and crude to cause mixing uneven, reacts insufficient, causes preparation efficiency lower, seriously affects lithium battery production effect Rate, therefore a kind of device of urgent need solves problems.

Summary of the invention

Technical problem to be solved by the invention is to provide a kind of height of lithium battery lithium-rich manganese-based anode material nano-powder Preparation equipment is imitated, the problems in above-mentioned present technology is able to solve.

The present invention is achieved through the following technical solutions: a kind of lithium battery lithium-rich manganese-based anode material of the invention is received The efficient Preparation equipment of rice flour body including fuselage, the first sliding cavity being arranged in the fuselage and is arranged in the fuselage The fixed block of top can slide up and down in first sliding cavity and be provided with sliding shoe, is fixedly installed in the sliding shoe First motor, the first motor output shaft extend downwardly end and are fixedly installed with first bevel gear, the first motor output The first spline housing is fixedly mounted in extending end in axial direction, and the first threaded hole up and down is provided in the sliding shoe, described First threaded hole screw-internal thread fit is connected with the first threaded rod extended up and down, first threaded rod both-side ends rotation up and down First sliding cavity is set to up and down in end wall, the first threaded rod top end and is fixedly installed on the fuselage roof The second interior motor power connects, and the first cavity of opening upwards is provided in the first sliding cavity bottom wall, and described first is empty It is symmetrically arranged with the second cavity of opening upwards in chamber left hand end wall, rotates and sets between first cavity and second cavity It is equipped with first rotating shaft, the first rotating shaft end in first cavity is fixedly installed with engages with the first bevel gear Second bevel gear, the first rotating shaft end in second cavity are fixedly installed with third hand tap gear, second cavity Far from the third cavity being connected to second cavity is provided in the end wall of first cavity side, turn in the third cavity Dynamic to be provided with the screw shell extended up and down, two sides are rotatably dispose in third cavity end wall up and down to the screw shell up and down Interior, the screw shell top end is provided with the second threaded hole of opening upwards, institute in the fuselage roof and roof It states the second threaded hole screw-internal thread fit and is connected with the second threaded rod extended up and down, the second threaded rod top end fixation is set It is placed in the fixed block bottom wall, rotation is provided with the first splined shaft extended up and down in the first sliding cavity roof, described First splined shaft bottom end protrudes into first sliding cavity, the first splined shaft top through the first sliding cavity bottom wall End is stretched out outside the fuselage and end is fixedly installed with rotating disc, is provided with the 4th of opening upwards in the rotating disc roof Cavity, the convex block being symmetrically set on the 4th cavity bottom wall are provided with opening in the 4th cavity left hand end wall Opposite groove is slidably provided with agitator in the 4th cavity of prime number, searches on plain agitator bottom wall and be symmetrically set with With the notch of convex block cooperation, it is provided with the stir chamber of opening upwards in the agitator, is arranged in told stir chamber bottom wall There is the 5th cavity, the first sliding eye of left and right perforation is provided in the 5th cavity left hand end wall, in first sliding eye It slidably is provided with the first sliding bar, is provided with and communicated with the second sliding eye between the stir chamber and the 5th cavity, institute It states and is slidably provided with the second splined shaft in the second sliding eye, the 5th cavity and end are protruded into second splined shaft bottom End is hingedly connected with the connecting rod extended downwardly, and the connecting rod bottom end and first sliding bar end are articulated and connected.

Preferably technical solution is provided with the second sliding cavity up and down in the fixed block, and described second is sliding Move it is intracavitary be slidably provided with the filter cylinder with multiple groups filter hole, be fixedly installed with rack gear on end wall on rear side of the filter cylinder, institute The filter chamber for being provided with opening upwards in filter cylinder is stated, is rotated in the filter chamber bottom wall and is provided with the second shaft, described second turn Axis top end protrudes into the filter chamber and outer surface is fixedly installed with agitating paddle, described in the second shaft bottom end is stretched out Filter cylinder is outer and end is fixedly installed with the second spline housing, is provided with for opening forward 6th in end wall on rear side of second sliding cavity Cavity is rotatably provided with the scroll bar extended up and down in the 6th cavity, flower up and down is provided in the scroll bar Keyhole, the splined hole internal spline are connected with the third splined shaft extended up and down, the third splined shaft bottom end with Second motor power connects, and the third shaft that left and right extends rotatably is provided in the 6th cavity, and the third turns Axis outer surface is fixedly installed with the turbine engaged with the scroll bar, and the turbine front and rear sides are symmetrically arranged with nibbles with the rack gear The gear of conjunction.

Preferably technical solution is hingedly connected with sealing cover, the sealing cover on end wall at left and right sides of the filter cylinder Be hingedly connected with push rod on roof, the push rod bottom end articulated connection on the fixed block roof.

Preferably technical solution is provided with the opposite limiting slot that is open, institute in the second sliding eye left hand end wall State the limited block for being slidably provided in limiting slot and being fixedly connected with second splined shaft, the limited block and the limit Elasticity is provided with top pressure spring between groove bottom wall.

The beneficial effects of the present invention are: the solid for preparing predecessor is placed in described when being worked with equipment of the invention In filter cylinder, while solution will be prepared and be placed in the agitator, the agitator is then placed in the 4th cavity, is aligned institute Convex block and notch are stated, starts the first motor at this time, the first motor rotation drives the first bevel gear rotation, described First bevel gear rotation drives the second bevel gear rotation, and the second bevel gear rotation drives the third hand tap gear to turn Dynamic, the third hand tap gear rotation drives the 4th bevel gear rotation, and the 4th bevel gear rotation drives the thread bush Cylinder rotation, the screw shell rotation drive first threaded rod to move down, and first threaded rod, which moves down, drives the fixation Block moves down, and starts second motor after the fixed block moves down, and the second motor rotation drives the third splined shaft Rotation, the third splined shaft rotation drive the scroll bar rotation, and the scroll bar rotation drives the turbine rotation, the turbine Rotation drives the gear rotation, and the gear rotation drives the rack gear to move down, and the rack gear, which moves down, to be driven under the filter cylinder It moves in the agitator, solid chemical material immerses in the solvent in the filter cylinder at this time, and the filter cylinder, which moves down, drives institute It states the second spline housing and moves down and abutted with second splined shaft, second splined shaft, which moves down, pushes the connecting rod to two sidesways Dynamic promotion first sliding bar, which slides in grooves on two sides, to be blocked, and the filter cylinder moves down while the sealing cover is closed, same with this The rotation of the second motor of Shi Suoshu drives the first threaded rod rotation, and the first threaded rod rotation drives first sliding shoe It moves up, first sliding shoe, which moves up, drives first spline housing and first splined shaft to cooperate, and starts described the at this time One motor, the first motor rotation drive the first spline housing rotation, and the first spline housing rotation drives described first Splined shaft rotation, the first splined shaft rotation drive the turn disc, the stirring of turn disc drop east Bucket rotation, the agitator rotation drive the second splined shaft rotation, and the second splined shaft rotation drives second flower Key set rotation, so that second shaft be driven to rotate, the second shaft rotation drives the stirring paddle stirring, accelerates reaction Speed.

Device structure of the invention is simple, easy to operate, drives moving down for fixed plate by using power source, facilitates stirring The disassembly of bucket and the taking-up of solution, while driving the rotation of agitator to accelerate rate of dissolution using the same power source, while The sealing for being slowly added to be completed at the same time stirring container that solid matter is completed while above-mentioned two function switch, improves conversion Efficiency, using buckle clamping agitator, prevent agitator since high-speed rotation causes to throw away, raising can device security, it is each It cooperates and does not influence between process, improve device practical performance.

Detailed description of the invention

The present invention is described in detail by following specific embodiments and drawings for ease of explanation,.

Fig. 1 is a kind of efficient Preparation equipment overall structure of lithium battery lithium-rich manganese-based anode material nano-powder of the invention Schematic diagram；

Fig. 2 is the structural schematic diagram of A in Fig. 1；

Fig. 3 is the structural schematic diagram of B in Fig. 1.

Specific embodiment

As shown in Figure 1-Figure 3, a kind of efficient preparation of lithium battery lithium-rich manganese-based anode material nano-powder of the invention is set It is standby, including fuselage 100, the first sliding cavity 131 being arranged in the fuselage 100 and 100 top of fuselage is set Fixed block 116 can slide up and down in first sliding cavity 131 and be provided with sliding shoe 107, fixed in the sliding shoe 107 It is provided with first motor 108,108 output shaft of first motor extends downwardly end and is fixedly installed with first bevel gear 133, institute It states 108 output shaft of first motor and upwardly extends the first spline housing 132 of end fixed installation, be provided in the sliding shoe 107 First threaded hole 138 of lower perforation, 138 screw-internal thread fit of the first threaded hole are connected with the first threaded rod extended up and down 137, about 137 both-side ends of the first threaded rod are rotatably dispose in about 131 end wall of the first sliding cavity, and described One threaded rod, 137 top end is connected by power with the second motor 139 being fixedly installed in 100 roof of fuselage, and described It is provided with the first cavity 134 of opening upwards in one sliding cavity, 131 bottom wall, is symmetrically set in 134 left hand end wall of the first cavity It is equipped with the second cavity 101 of opening upwards, rotation is provided with first between first cavity 134 and second cavity 101 Shaft 136,136 end of the first rotating shaft in first cavity 134 is fixedly installed with nibbles with the first bevel gear 133 The second bevel gear 135 of conjunction, 136 end of the first rotating shaft in second cavity 101 are fixedly installed with third hand tap gear 102, second cavity 101 is connected to far from being provided in the 134 side end wall of the first cavity with second cavity 101 Third cavity 104, the interior rotation of the third cavity 104 are provided with the screw shell 105 extended up and down, the screw shell 105 Upper and lower two sides are rotatably dispose in about 104 end wall of third cavity, and 105 top end of screw shell runs through the machine The second threaded hole 106 of opening upwards is provided in 100 roof of body and roof, 106 screw-internal thread fit of the second threaded hole connects It is connected to the second threaded rod 109 extended up and down, 109 top end of the second threaded rod is fixedly installed on the fixed block 116 In bottom wall, rotation is provided with the first splined shaft 130 extended up and down, first spline in 131 roof of the first sliding cavity 130 bottom end of axis protrudes into first sliding cavity 131, first splined shaft 130 through 131 bottom wall of the first sliding cavity Top end is stretched out outside the fuselage 100 and end is fixedly installed with rotating disc 129, is provided in 129 roof of rotating disc 4th cavity 112 of opening upwards, the convex block 110 being symmetrically set on 112 bottom wall of the 4th cavity, the described 4th is empty It is provided with the opposite groove 128 that is open in 112 left hand end wall of chamber, is slidably provided with agitator in the 4th cavity 112 of prime number 123, search the notch 111 being symmetrically set on plain 123 bottom wall of agitator with the convex block 110 cooperation, the agitator 123 It is inside provided with the stir chamber 124 of opening upwards, the 5th cavity 125, the 5th cavity are provided in told 123 bottom wall of stir chamber It is provided with the first sliding eye 127 of left and right perforation in 125 left hand end walls, is slidably provided in first sliding eye 127 First sliding bar 113 is provided with and communicated with the second sliding eye 148 between the stir chamber 124 and the 5th cavity 125, described The second splined shaft 152 is slidably provided in second sliding eye 148,152 bottom of the second splined shaft protrudes into the described 5th Cavity 125 and end are hingedly connected with the connecting rod 126 extended downwardly, and 126 bottom end of connecting rod and described first are slided The articulated connection of 113 end of lever.

Valuably, the second sliding cavity 115 up and down, second sliding cavity 115 are provided in the fixed block 116 It is interior to be slidably provided with the filter cylinder 119 with multiple groups filter hole, rack gear is fixedly installed on the 119 rear side end wall of filter cylinder 147, the filter chamber 121 of opening upwards is provided in the filter cylinder 119, rotation is provided with second in 121 bottom wall of filter chamber Shaft 122,122 top end of the second shaft protrudes into the filter chamber 121 and outer surface is fixedly installed with agitating paddle 120, Second shaft, 122 bottom end stretches out that the filter cylinder 119 is outer and end is fixedly installed with the second spline housing 114, and described the It is provided with the 6th cavity 146 for opening forward in two sliding cavities, 115 rear side end wall, is rotatably set in the 6th cavity 146 It is equipped with the scroll bar 143 extended up and down, is provided with splined hole 142 up and down in the scroll bar 143, in the splined hole 142 Spline fitted is connected with the third splined shaft 141 extended up and down, 141 bottom end of third splined shaft and second motor 139 are connected by power, and the third shaft 140 that left and right extends, the third shaft are rotatably provided in the 6th cavity 146 140 outer surfaces are fixedly installed with the turbine 145 engaged with the scroll bar 143,145 front and rear sides of turbine be symmetrically arranged with 147 meshed gears 144 of rack gear.

Valuably, sealing cover 118,118 roof of sealing cover are hingedly connected on 119 left and right sides end wall of filter cylinder On be hingedly connected with push rod 117,117 bottom end of the push rod articulated connection on 116 roof of fixed block.

Valuably, the opposite limiting slot 150 that is open, the limit are provided in 148 left hand end wall of the second sliding eye The limited block 149 being fixedly connected with second splined shaft 152, the limited block 149 and institute are slidably provided in slot 150 Elasticity is provided with top pressure spring 151 between stating 150 bottom wall of limiting slot.

When equipment of the invention is in original state, the first motor 108 and the second motor 139 are in static shape State, first sliding shoe 107 are located at 131 lower section of the first sliding cavity, the first bevel gear 133 and the second cone tooth 135 engagement of wheel, first spline housing 132 are separated with first splined shaft 130.

When being worked with equipment of the invention, the solid for preparing predecessor is placed in the filter cylinder 119, while will preparation Solution is placed in the agitator 123, and the agitator 123 is then placed in the 4th cavity 112, is aligned the convex block 110 with notch 111, start the first motor 108 at this time, the rotation of first motor 108 drives the first bevel gear 133 Rotation, the rotation of first bevel gear 133 drive the second bevel gear 135 to rotate, and the rotation of second bevel gear 135 drives The third hand tap gear 102 rotates, and the rotation of third hand tap gear 102 drives the 4th bevel gear 103 to rotate, and the described 4th The rotation of bevel gear 103 drives the screw shell 105 to rotate, and the rotation of screw shell 105 drives first threaded rod 109 It moves down, first threaded rod 109, which moves down, drives the fixed block 116 to move down, after the fixed block 116 moves down described in starting Second motor 139, the rotation of the second motor 139 drive the third splined shaft 141 to rotate, 141 turns of the third splined shaft Dynamic that the scroll bar 143 is driven to rotate, the rotation of scroll bar 143 drives the turbine 145 to rotate, and the rotation of turbine 145 drives The gear 144 rotates, and the rotation of gear 144 drives the rack gear 147 to move down, and the rack gear 147, which moves down, drives the filter Cylinder 119 is displaced downwardly in the agitator 123, and solid chemical material immerses in the solvent in the filter cylinder 119 at this time, the filter Cylinder 119, which moves down, to be driven second spline housing 114 to move down to abut with second splined shaft 152, under second splined shaft 152 Shifting pushes the connecting rod 126 to slide in grooves on two sides 128 to mobile promotion first sliding bar 113 in two sides and blocks, described Filter cylinder 119 moves down while the sealing cover 118 is closed, and the rotation of the second motor 139 drives first screw thread at the same time Bar 137 rotates, and the rotation of the first threaded rod 137 drives first sliding shoe 107 to move up, on first sliding shoe 107 Shipper pole moves first spline housing 132 and cooperates with first splined shaft 130, starts the first motor 108 at this time, and described the The rotation of one motor 108 drives first spline housing 132 to rotate, and the rotation of the first spline housing 132 drives first spline Axis 130 rotates, and the rotation of the first splined shaft 130 drives the rotating disc 129 to rotate, the rotation of the rotating disc 129 drop east The agitator 123 rotates, and the rotation of agitator 123 drives second splined shaft 152 to rotate, second splined shaft 152 rotations drive second spline housing 114 to rotate, so that second shaft 122 is driven to rotate, second shaft 122 Rotation drives the agitating paddle 120 to stir, and accelerates reaction speed.

The beneficial effects of the present invention are: the solid for preparing predecessor is placed in described when being worked with equipment of the invention In filter cylinder, while solution will be prepared and be placed in the agitator, the agitator is then placed in the 4th cavity, is aligned institute Convex block and notch are stated, starts the first motor at this time, the first motor rotation drives the first bevel gear rotation, described First bevel gear rotation drives the second bevel gear rotation, and the second bevel gear rotation drives the third hand tap gear to turn Dynamic, the third hand tap gear rotation drives the 4th bevel gear rotation, and the 4th bevel gear rotation drives the thread bush Cylinder rotation, the screw shell rotation drive first threaded rod to move down, and first threaded rod, which moves down, drives the fixation Block moves down, and starts second motor after the fixed block moves down, and the second motor rotation drives the third splined shaft Rotation, the third splined shaft rotation drive the scroll bar rotation, and the scroll bar rotation drives the turbine rotation, the turbine Rotation drives the gear rotation, and the gear rotation drives the rack gear to move down, and the rack gear, which moves down, to be driven under the filter cylinder It moves in the agitator, solid chemical material immerses in the solvent in the filter cylinder at this time, and the filter cylinder, which moves down, drives institute It states the second spline housing and moves down and abutted with second splined shaft, second splined shaft, which moves down, pushes the connecting rod to two sidesways Dynamic promotion first sliding bar, which slides in grooves on two sides, to be blocked, and the filter cylinder moves down while the sealing cover is closed, same with this The rotation of the second motor of Shi Suoshu drives the first threaded rod rotation, and the first threaded rod rotation drives first sliding shoe It moves up, first sliding shoe, which moves up, drives first spline housing and first splined shaft to cooperate, and starts described the at this time One motor, the first motor rotation drive the first spline housing rotation, and the first spline housing rotation drives described first Splined shaft rotation, the first splined shaft rotation drive the turn disc, the stirring of turn disc drop east Bucket rotation, the agitator rotation drive the second splined shaft rotation, and the second splined shaft rotation drives second flower Key set rotation, so that second shaft be driven to rotate, the second shaft rotation drives the stirring paddle stirring, accelerates reaction Speed.

Device structure of the invention is simple, easy to operate, drives moving down for fixed plate by using power source, facilitates stirring The disassembly of bucket and the taking-up of solution, while driving the rotation of agitator to accelerate rate of dissolution using the same power source, while The sealing for being slowly added to be completed at the same time stirring container that solid matter is completed while above-mentioned two function switch, improves conversion Efficiency, using buckle clamping agitator, prevent agitator since high-speed rotation causes to throw away, raising can device security, it is each It cooperates and does not influence between process, improve device practical performance.

The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any The change or replacement expected without creative work, should be covered by the protection scope of the present invention.Therefore, of the invention Protection scope should be determined by the scope of protection defined in the claims.

Claims (4)

1. a kind of efficient Preparation equipment of lithium battery lithium-rich manganese-based anode material nano-powder of the invention, including fuselage, setting The first sliding cavity in the fuselage and the fixed block that the body upper is arranged in, can be upper and lower in first sliding cavity Sliding is provided with sliding shoe, first motor is fixedly installed in the sliding shoe, the first motor output shaft extends downwardly End is fixedly installed with first bevel gear, and the first motor output shaft upwardly extends end and the first spline housing, institute is fixedly mounted State the first threaded hole being provided in sliding shoe up and down, the first threaded hole screw-internal thread fit is connected with to be extended up and down First threaded rod, both-side ends are rotatably dispose in first sliding cavity or more end wall first threaded rod up and down, described First threaded rod top end is connect with the second motor power being fixedly installed in the fuselage roof, first sliding cavity It is provided with the first cavity of opening upwards in bottom wall, is symmetrically arranged with the second of opening upwards in the first cavity left hand end wall Cavity, rotation is provided with first rotating shaft between first cavity and second cavity, and described the in first cavity One shaft end is fixedly installed with the second bevel gear engaged with the first bevel gear, and described first in second cavity Shaft end is fixedly installed with third hand tap gear, and second cavity in the end wall of first cavity side far from being provided with and institute The third cavity of the second cavity connection is stated, rotation is provided with the screw shell extended up and down, the screw thread in the third cavity Two sides are rotatably dispose in the third cavity or more end wall sleeve up and down, and the screw shell top end runs through the fuselage The second threaded hole of opening upwards is provided in roof and roof, the second threaded hole screw-internal thread fit is connected with extension up and down The second threaded rod, the second threaded rod top end is fixedly installed in the fixed block bottom wall, first sliding cavity Rotation is provided with the first splined shaft extended up and down in roof, and the first splined shaft bottom end runs through first sliding cavity Bottom wall protrudes into first sliding cavity, and the first splined shaft top end is stretched out outside the fuselage and end is fixedly installed with and turns Moving plate is provided with the 4th cavity of opening upwards in the rotating disc roof, is symmetrical set on the 4th cavity bottom wall Some convex blocks are provided with the opposite groove that is open in the 4th cavity left hand end wall, slidably set in the 4th cavity of prime number It is equipped with agitator, the notch being symmetrically set on plain agitator bottom wall with convex block cooperation is searched, is set in the agitator It is equipped with the stir chamber of opening upwards, the 5th cavity is provided in told stir chamber bottom wall, is set in the 5th cavity left hand end wall It is equipped with the first sliding eye of left and right perforation, is slidably provided with the first sliding bar, the stir chamber in first sliding eye It is provided with and communicated with the second sliding eye between the 5th cavity, is slidably provided with the second spline in second sliding eye Axis, the 5th cavity is protruded into second splined shaft bottom and end is hingedly connected with the connecting rod extended downwardly, the company Extension bar bottom end and first sliding bar end are articulated and connected.

2. a kind of efficient Preparation equipment of lithium battery lithium-rich manganese-based anode material nano-powder according to claim 1, It is characterized in that: being provided with the second sliding cavity up and down in the fixed block, be slidably arranged in second sliding cavity There is the filter cylinder with multiple groups filter hole, is fixedly installed with rack gear on end wall on rear side of the filter cylinder, opening is provided in the filter cylinder Upward filter chamber, the interior rotation of the filter chamber bottom wall are provided with the second shaft, and the second shaft top end protrudes into described Filter chamber and outer surface are fixedly installed with agitating paddle, and the second shaft bottom end is stretched out outside the filter cylinder and the fixed peace in end Equipped with the second spline housing, the 6th cavity for opening forward, the 6th cavity are provided in end wall on rear side of second sliding cavity It is interior to be rotatably provided with the scroll bar extended up and down, splined hole up and down is provided in the scroll bar, in the splined hole Spline fitted is connected with the third splined shaft extended up and down, and the third splined shaft bottom end and second motor power connect It connects, the third shaft that left and right extends rotatably is provided in the 6th cavity, third shaft outer surface is fixedly installed with The turbine engaged with the scroll bar, the turbine front and rear sides are symmetrically arranged with and the rack gear meshed gears.

3. a kind of efficient Preparation equipment of lithium battery lithium-rich manganese-based anode material nano-powder according to claim 1, It is characterized in that: being hingedly connected with sealing cover on end wall at left and right sides of the filter cylinder, be hingedly connected with and push away in the sealing lid top wall Bar, push rod bottom end articulated connection on the fixed block roof.

4. a kind of efficient Preparation equipment of lithium battery lithium-rich manganese-based anode material nano-powder according to claim 1, It is characterized in that: being provided with the opposite limiting slot of being open in the second sliding eye left hand end wall, it is slidable in the limiting slot It is provided with the limited block being fixedly connected with second splined shaft, elasticity is provided between the limited block and the limit groove bottom wall Top pressure spring.