CN2248198Y - Microtension open-width constant speed jigger - Google Patents

Abstract

The utility model relates to a microtension open-width constant speed jigger, which is provided with a machine frame on which an axle head is arranged; the axle head is provided with a belt pulley and a speed regulating motor. A cylinder is provided with a guide roller, a dye jigger of a width expanding frame, a cloth roller, a gear box provided with a driving axle with a gear, an electromagnetic clutch binder, a chainwheel, an overrunning clutch binder, a chain wheel, an electromagnetic clutch binder, an electric appliance box provided with a speed select control device, an equal linear speed control device, etc.

Description

Part power open width constant speed dye jigger a little

The utility model relates to the open width dye jigger of a kind of novel transmission mechanism and arrangements for speed regulation, small and the open width dye jigger that linear velocity equates of tension force during more specifically to a kind of dye gigging fabric.

Needs along with the raising and the foreign trade of living standards of the people, more and more higher to silk, cotton, the washing shrinkage of closing fabrics such as fibre, aberration, pulling force, feel, performance requirement such as crease-resistant, these performances of fabric with fabric is soaped, the open width dye jigger of dyeing, boiling-off, cleaning technical parameter---tension force and linear velocity during the dye gigging fabric are relevant, fabric will improve grade just needs fabric dye gigging when parting power and Constant Linear Velocity a little.The open width dye jigger of the domestic and imported that China printing and dyeing mill uses now mainly is M122, M125, M127, VH etc., differential gearing is adopted in these open width dye jigger two cloth beam transmissions respectively, two direct current generator transmissions, the friction pulley transmission, the tension force and the linear velocity of fabric also change cloth beam under the transmission between diameter variation two cloth beams along with its volume is gone up behind the fabric like this, fabric can not carry out dye gigging when parting power and Constant Linear Velocity a little, therefore parting the at first equipment that the open width dye jigger of power and Constant Linear Velocity has become printing and dyeing mill's product to improve grade a little, also is China engineers and technicians' brainstorm project.

When the purpose of this utility model is dye jigger work, bolt roller volume is gone up fabric and another cloth beam is emitted fabric in two cloth beams, at this moment the tension force of fabric is small and adjustable between two cloth beams, rolls up the cloth beam deceleration uniformly of going up fabric simultaneously the linear velocity of fabric is equated.

The utility model is to realize like this.This dye jigger organic frame, the variable-speed motor of belt pulley is installed on the spindle nose, the dye vat of deflector roll and expanding frame is installed in the cylinder, cloth beam, transmission case, the axle that belt pulley and travelling gear are installed is installed in the transmission case, two power transmission shafts of gear and electromagnetic clutch conjunction and sprocket wheel and freewheel clutch conjunction and sprocket wheel and electromagnetic clutch conjunction and gear are installed, the axle of the tension regulator of gear and freewheel clutch conjunction and moving plate and stator and gear composition is installed, the axle of travelling gear and tension dial and handwheel is installed, electric appliance box, the speed of installing on the electric appliance box select and etc. the linear speed control device comprise the low speed small size motor, connect cover, one is the power transmission shaft of friction wheel, feed screw nut's transmission axle bed is installed, the friction wheel axle of friction pulley and matrix driver is installed, convex driver and pin and spring, the tooth axle, lever and connecting rod and electromagnet, gear and power transmission shaft, connect cover and potentiometer, torsion spring and torsion spring seat and torsion spring fixed cover, handle and latch and plug housing, bearing block, pivoted housing and fixed cover, screw mandrel and handwheel, parts such as axle bed and guide rail are formed.Variable-speed motor is installed on the frame, dye vat is installed in the stull of frame, transmission case is installed in the top of frame front, be installed on the case on the axle travelling gear by idle wheel with being installed in that gear and the gears engaged on the electromagnetic clutch conjunction on the power transmission shaft axle go up the belt pulley of installation and linking by the belt pulley of installing on belt and the variable-speed motor spindle nose, be installed in sprocket wheel on the power transmission shaft and the sprocket wheel on electromagnetic clutch conjunction and sprocket wheel and the freewheel clutch conjunction respectively with another power transmission shaft on the sprocket wheel installed and the sprocket wheel on freewheel clutch conjunction and sprocket wheel and the electromagnetic clutch conjunction linking by chain, the gear that is directly installed on two power transmission shafts with a gear of upward installing of installation tension regulator and the gears engaged on the freewheel clutch conjunction respectively, a gear of upward installing of handwheel and tension dial and the gears engaged on two tension regulators are installed, moving plate on two tension regulators respectively be installed in gear on the same axle and the freewheel clutch on the freewheel clutch conjunction and linking, one of two cloth beam are by connecing cover and linking with two power transmission shafts and the other end is installed in the top of frame back by bearing, electric appliance box is installed in the top of transmission case, the speed of installing on the case is selected and the spindle nose that waits the low speed small size motor in the linear speed control device interlocks by connecing that to be knotted of installing in the transmission axle bed that the feed screw nut is installed be the power transmission shaft that friction is taken turns, the friction wheel links the friction pulley that is installed on the friction wheel axle, one end of friction wheel axle is installed with the matrix driver, the convex driver is installed in the axle center of tooth axle and by the chute on pin mounted thereto and the tooth axle and is linking, electromagnet is linking the tail point of convex driver by connecting rod and lever, the tooth of tooth axle with the gears engaged that is installed on the power transmission shaft, potentiometer is knotted power transmission shaft by connecing to interlock, one of torsion spring is installed on the torsion spring seat and the other end is fixed on the power transmission shaft by the torsion spring fixed cover, plug housing is installed on the bearing block, and bearing block is installed on the power transmission shaft by bearing, pivoted housing is fixed on the power transmission shaft, fixed cover is fixed on the electric appliance box, one of the screw mandrel that handwheel is installed is installed on the electric appliance box by axle bed and the other end is linking the feed screw nut, the transmission axle bed that the feed screw nut is installed is linking guide rail.

Behind the power connection, variable-speed motor counterclockwise rotates, the belt pulley that is installed on the motor spindle nose makes the belt pulley and the travelling gear that are installed on the same axle of transmission case also do counterclockwise to rotate by belt, travelling gear makes the gear and the gear on the electromagnetic clutch conjunction that are installed on the front propeller shaft do the clockwise direction rotation by idle wheel, and makes gear and the gear on the electromagnetic clutch conjunction installed on the inter-axle shaft do counterclockwise to rotate; At this moment as make the gear that is installed on the front propeller shaft and the then electromagnetic clutch work of power connection of the electromagnetic clutch on the electromagnetic clutch conjunction, front propeller shaft and sprocket wheel mounted thereto and freewheel clutch conjunction and gear are made clockwise direction and are rotated, because the gear of installing on the sprocket wheel of installing on the inter-axle shaft and the power supply of the electromagnetic clutch on the electromagnetic clutch conjunction and the front propeller shaft and the power supply of the electromagnetic clutch on the electromagnetic clutch conjunction are same power supply sources, so the electromagnetic clutch on sprocket wheel of installing on the inter-axle shaft and the electromagnetic clutch conjunction is also worked, linking the sprocket wheel that is installed on the inter-axle shaft and the sprocket wheel on the electromagnetic clutch conjunction because be installed in sprocket wheel on the front propeller shaft and the sprocket wheel on the freewheel clutch conjunction by chain, so also making clockwise direction, inter-axle shaft rotates, two power transmission shafts are also made clockwise direction by two cloth beams that connect cover and link and are rotated, and the cloth beam volume that links with front propeller shaft is gone up fabric and emitted fabric with the cloth beam of inter-axle shaft binding like this; As make the gear that is installed on the inter-axle shaft and the power connection of the electromagnetic clutch on the electromagnetic clutch conjunction, then being installed in the sprocket wheel on the front propeller shaft and the power supply of the electromagnetic clutch on the electromagnetic clutch conjunction also connects, inter-axle shaft and front propeller shaft are done counterclockwise to rotate simultaneously, and the cloth beam that links with inter-axle shaft is made counterclockwise to rotate volume and gone up fabric and do counterclockwise to rotate to emit fabric with the cloth beam that front propeller shaft links; Because cloth beam volume is gone up maximum gauge and cloth beam diameter ratio behind the fabric less than the teeth number of sprocket ratio that is installed on sprocket wheel and electromagnetic clutch conjunction on the power transmission shaft, sprocket wheel and the freewheel clutch conjunction, so two cloth beams are parting power situation last volume dyeing and weaving thing a little all the time.After the dye jigger work, rotate the handwheel on the axle that travelling gear and tension dial are installed as clockwise direction, gear on two tension regulators of travelling gear transmission and its engagement, promote on the tension regulator moving plate to stator near and increase frictional force, because moving plate is linking the freewheel clutch on gear and the freewheel clutch conjunction, therefore when cloth beam is emitted fabric, by connecing its axle of going up the gear drive of installing and the installation tension regulator of its engagement of power transmission shaft that cover links the cloth beam upward gear of installation and the gear on the freewheel clutch conjunction, the tension force when increasing two cloth beam dye gigging fabrics; If counterclockwise rotate the handwheel on the axle that travelling gear and tension dial are installed, the power of reducing friction away from stator of the moving plate on the tension regulator, thereby the tension force when dwindling two cloth beam dye gigging fabrics.

Behind the power connection, low speed small size motor clockwise direction rotation in the linear speed control device is selected and waited to the speed on the electric appliance box of being installed in, the power transmission shaft that by connecing that cover and low speed small size motor spindle nose link one of its spindle nose of installing in feed screw nut's the transmission axle bed is installed is the friction wheel also clockwise direction rotates, and the friction wheel promotes also to make when friction crop rotation clockwise direction with its binding rotates a friction wheel axle that the matrix driver is installed to make clockwise direction and rotates; When the power connection of the electromagnetic clutch that drives cloth beam dye gigging fabric, the power supply of electromagnet is also connected simultaneously and is worked, electromagnet moves forward by connecting rod and lever pushing convex driver, the compression spring also links with the matrix driver, therefore when matrix driver clockwise direction rotates, convex driver also clockwise direction rotates and makes the also clockwise direction rotation of tooth axle, and then make and the tooth meshed gears of tooth axle and the power transmission shaft do rotation counterclockwise that gear is installed, power transmission shaft counterclockwise rotates to make torsion spring fixed cover mounted thereto tighten torsion spring and make by connecing cover and also does counterclockwise to rotate with the potentiometer of its binding, so Xuan Ding cloth beam rotating speed along with potentiometer counterclockwise rotate resistance value at the uniform velocity increasing and make exciting curent the reducing at the uniform velocity that feeds the variable-speed motor magnetizing coil, variable-speed motor spindle nose speed slowing down at the uniform velocity, thereby the rotating speed that makes cloth beam is slowing down at the uniform velocity also, also be diameter increase at the uniform velocity behind the last fabric of its volume when the cloth beam rotating speed at the uniform velocity slows down, thereby realized that dye jigger is waiting linear speed situation last volume dyeing and weaving thing; When the power supply that disconnects the electromagnetic clutch that drives cloth beam dye gigging fabric, the power supply of electromagnet also disconnect, the spring that is compressed by the convex driver in the tooth axle unclamps, the convex driver leaves the matrix driver and gets back to original position, lever and connecting rod and electromagnet are also got back to original position, and torsion spring forwards original position to and makes tooth axle, gear and power transmission shaft and potentiometer forward original position to.The pull-up handle makes latch leave fixed cover and rotates plug housing, the pivoted housing that is fixed on the power transmission shaft near plug housing also and then rotates, thereby power transmission shaft is rotated and drive potentiometer and follow rotation, because the rotating speed exciting curent that potentiometer is control feeds the variable-speed motor magnetizing coil, that just control the variable-speed motor spindle nose is the rotating speed of cloth beam, so the linear velocity when changing the resistance value of potentiometer and just can select cloth beam dye gigging fabric.The handwheel of rotational fixation on screw mandrel, make transmission axle bed move left and right on guide rail that the feed screw nut is installed, thereby the power transmission shaft installed in the transmission axle bed that the feed screw nut the is installed friction wheel on it inwardly or from interior is moved on the rubbing surface of friction pulley to the limit from the limit, the time that the friction wheel is advanced on the rubbing surface of friction pulley also just changes to weak point or from short is long from long, to determine that the position of friction wheel on the rubbing surface of friction pulley determine that linear speed such as dye jigger rolls up the fabric of certain thickness, fabric is thin more, keep to the side more in the position of friction wheel on the rubbing surface of friction pulley.

Advantage of the present utility model has realized that at first fabric is parting the inferior linear speed dye gigging of power situation a little; The secondth, simple in structure, easy to manufacture; The 3rd is wide application, silk, cotton, closes fibre and all is suitable for: the 4th is processing ease, easy to maintenance.The utility model is suitable for simultaneously and makes package machine and wire drawing machine etc. except making dye jigger.

Accompanying drawing 1 the utility model embodiment parts the structure chart of power open width constant speed dye jigger a little.

Accompanying drawing 2 the utility model embodiment part A---the A cutaway view on the power open width constant speed dye jigger structure chart 1 a little.

The speed that accompanying drawing 3 the utility model embodiment part power open width constant speed dye jigger a little select and etc. the structure chart of linear speed control device.

The speed that accompanying drawing 4 the utility model embodiment part power open width constant speed dye jigger a little select and etc. B---the B cutaway view on the linear speed control device structure chart 3.

The speed that accompanying drawing 5 the utility model embodiment part power open width constant speed dye jigger a little select and etc. the C on the linear speed control device structure chart 3 to view.

Be specific embodiment of the utility model below:

As shown in Figure 1, present embodiment comprises that being installed in frame [18] goes up the variable-speed motor [27] that belt pulley [29] are installed on its spindle nose, the dye vat [12] that deflector roll [16] and expanding frame [13] and expanding frame [14] are installed in the cylinder is installed in the stull of frame [18], transmission case [1] is installed in the top of frame [18] front, be installed in the case on the axle travelling gear [31] by idle wheel [30] and [32] and [33] respectively be installed in gear on power transmission shaft [23] and [2] and gear [26] and [3] on the electromagnetic clutch conjunction and meshing, and the belt pulley [28] that axle is upward installed is linking by the belt pulley of installing on belt and variable-speed motor [27] spindle nose [29], be installed in the case sprocket wheel on the power transmission shaft [2] and the sprocket wheel [4] on electromagnetic clutch conjunction and sprocket wheel and the freewheel clutch conjunction and sprocket wheel [5] respectively be installed in sprocket wheel on the power transmission shaft [23] and sprocket wheel [25] and the sprocket wheel [24] on freewheel clutch conjunction and sprocket wheel and the electromagnetic clutch conjunction and linking by chain, the gear [6] that is installed on the power transmission shaft [2] is meshing with last gear of installing of the axle that tension regulator is installed and the gear [7] on the freewheel clutch conjunction, the gear [22] that is installed on the power transmission shaft [23] is meshing with last gear of installing of the axle that tension regulator is installed and the gear [21] on the freewheel clutch conjunction, the gear of upward installing [10] that handwheel and tension dial [11] are installed in the case is meshing with gear [9] and [19] on two tension regulators, moving plate on two tension regulators [8] and [20] respectively be installed in gear on the same axle and the freewheel clutch on the freewheel clutch conjunction and linking, two cloth beams [15] and [17] one is linking with power transmission shaft [2] and [23] respectively by connecing cover, the other end then is installed in the top of frame [18] back by bearing, electric appliance box is installed in the top of transmission case [1], the speed of installing on the case is selected and the spindle nose that waits the low speed small size motor [35] in the linear speed control device is the power transmission shaft [37] that friction is taken turns by the one head that connects cover [36] and linking installation in the transmission axle bed [39] that the feed screw nut is installed, the friction wheel links the friction pulley [40] that is installed on the friction wheel axle [42], one end of friction wheel axle [42] is installed with matrix driver [41], convex driver [59] is installed in the axle center of tooth axle [63] and by the chute on pin mounted thereto [61] and the tooth axle [63] and is linking, electromagnet [65] is linking the tail point of convex driver [59] by connecting rod [64] and lever [60], the tooth of tooth axle [63] is meshing with the gear [49] that is installed on the power transmission shaft [48], potentiometer [46] is linking power transmission shaft [48] by connecing cover [47], one of torsion spring [51] is installed in that torsion spring seat [50] is gone up and the other end is fixed on the power transmission shaft [48] by torsion spring fixed cover [52], plug housing [55] is installed on the bearing block [58], bearing block [58] is installed on the power transmission shaft [48] by bearing, pivoted housing [57] is fixed on the electric appliance box, [43] one of the screw mandrels that handwheel [45] is installed are installed on the electric appliance box by axle bed [44] and the other end is linking the feed screw nut, the transmission axle bed [39] that the feed screw nut is installed is linking guide rail [38].

The working condition of present embodiment is as follows:

Behind the power connection, variable-speed motor [27] counterclockwise rotates, the belt pulley [29] that is installed on variable-speed motor [27] spindle nose makes the belt pulley [28] and the travelling gear [31] that are installed on the same axle of transmission case [1] also do counterclockwise to rotate by belt, and travelling gear [31] makes the gear and the gear [3] on the electromagnetic clutch conjunction that are installed on the power transmission shaft [2] do the clockwise direction rotation, is installed in gear and the rotation of the work of the gear [26] on electromagnetic clutch conjunction counter clockwise direction on the power transmission shaft [23] by idle wheel [30] and [32] and [33]; At this moment as make the gear that is installed on the power transmission shaft [2] and the power connection of the electromagnetic clutch on the electromagnetic clutch conjunction, then electromagnetic clutch work, power transmission shaft [2] and sprocket wheel mounted thereto and the sprocket wheel [5] on the freewheel clutch conjunction and gear [6] are made clockwise direction and are rotated, because the sprocket wheel that power transmission shaft [23] is upward installed and the power supply of the electromagnetic clutch on the electromagnetic clutch conjunction and power transmission shaft [2] go up the gear of installation and the power supply of the electromagnetic clutch on the electromagnetic clutch conjunction is same power supply source, so power transmission shaft [23] is gone up the sprocket wheel of installation and the electromagnetic clutch on the electromagnetic clutch conjunction is also worked, linking the sprocket wheel that is installed on the power transmission shaft [23] and the sprocket wheel [24] on the electromagnetic clutch conjunction because be installed in sprocket wheel on the power transmission shaft [2] and the sprocket wheel [5] on the freewheel clutch conjunction by chain, so also making clockwise direction, power transmission shaft [23] rotates, the clockwise direction rotation is also done by two cloth beams [15] and [17] that connect cover and link in two power transmission shafts [2] and [23], like this fabric and cloth beam [17] is emitted fabric on cloth beam [15] volume; If make the gear that is installed on the power transmission shaft [23] and the electromagnetic clutch on the electromagnetic clutch conjunction power connection, then be installed in sprocket wheel on the power transmission shaft [2] and the power supply of the electromagnetic clutch on the electromagnetic clutch conjunction is also connected, power transmission shaft [23] and power transmission shaft [2] are done counterclockwise to rotate, and cloth beam [17] rotates counterclockwise that volume is gone up fabric and cloth beam [15] counterclockwise rotates and emits fabric.After the dye jigger work, as clockwise direction rotate be installed with travelling gear [10] and tension dial [11] spool on handwheel, gear [9] on two tension regulators of travelling gear [10] transmission and its engagement and [19] promote moving plate [8] on the tension regulator and [20] to stator near and increase frictional force, owing to go up gear and its freewheel clutch of freewheel clutch conjunction of installing and linking moving plate [8] and [20] respectively for two that tension regulator is installed, and its gear [7] and [21] are gone up gear [6] and [22] of installing with power transmission shaft [2] and [23] respectively and are being meshed, thereby the tension force when having increased two cloth beams [15] and [17] dye gigging fabric; As counterclockwise rotate be installed with travelling gear [10] and tension dial [11] spool on handwheel, the moving plate on the tension regulator [8] and [20] power of reducing friction away from stator, the tension force when reducing two cloth beams [15] and [17] dye gigging fabric with this.

Behind the power connection, low speed small size motor [35] clockwise direction rotation in the linear speed control device is selected and waited to the speed on the electric appliance box of being installed in, also make clockwise direction by a power transmission shaft [37] that is friction is taken turns that connects cover [36] binding small size motor [35] spindle nose and rotate, and make the friction pulley [40] of binding friction wheel and the friction wheel axle [42] of installation friction pulley [40] and matrix driver [41] also do the clockwise direction rotation; When connecting the power supply of the gear that is installed on power transmission shaft [2] or [23] and the electromagnetic clutch on the electromagnetic clutch conjunction when driving cloth beam [15] and [17] dye gigging fabric, the power supply of electromagnet [65] is also connected and is worked, and promote convex driver [59] by connecting rod [64] and lever [60] and move forward, compression spring [62] also links and makes tooth axle [63] make clockwise direction with matrix driver [41] and rotate, and then make and do counterclockwise to rotate with the tooth meshed gears [49] of tooth axle [63] and make the power transmission shaft [48] that gear [49] is installed also do rotation counterclockwise, power transmission shaft [48] counterclockwise rotates and makes torsion spring fixed cover [52] mounted thereto tighten torsion spring [51], and make by the potentiometer [46] that connects cover [47] and its binding and also does rotation counterclockwise, like this along with potentiometer [46] counterclockwise rotate resistance value at the uniform velocity increase and make exciting curent the reducing at the uniform velocity that feeds variable-speed motor [35] magnetizing coil, rotating speed on variable-speed motor [35] spindle nose is slowing down at the uniform velocity also, on this and cloth beam [15] or [17] volume behind the fabric diameter increase linear speed dye gigging such as synchronous realization gradually; Disconnect the gear that is installed on power transmission shaft [2] and [23] and the power supply of the electromagnetic clutch on the electromagnetic clutch conjunction when stopping cloth beam [15] and [17] dye gigging fabric, then the power supply of electromagnet [65] also disconnects, unclamped by the spring [62] of convex driver [59] compression in the tooth axle, convex driver [59] leaves matrix driver [41] and sets back and power transmission shaft [48], tooth axle [63], potentiometer [46] are set back.Pull-up handle [56] makes latch [54] leave fixed cover [53] and rotates plug housing [55], the pivoted housing [57] that is fixed on the power transmission shaft [48] near plug housing [55] also and then rotates, and then rotate thereby power transmission shaft [48] is rotated and drive potentiometer [46], align the exciting curent that feeds variable-speed motor [35] magnetizing coil with this, thereby determine variable-speed motor [35] spindle nose rotating speed, the just linear velocity of cloth beam [15] and [17] fabric when the dye gigging fabric.The handwheel [45] of rotational fixation on screw mandrel [43], make the transmission axle bed [39] that the feed screw nut is installed go up move left and right at guide rail [38], the friction wheel on the power transmission shaft [37] that thereby the one head that makes installation in the transmission axle bed [39] that the feed screw nut is installed is friction takes turns inwardly or from interior moves to the limit from the limit on the rubbing surface of friction pulley [40], the time that the friction wheel is advanced on the rubbing surface of friction pulley [40] also just changes to weak point or from short is long from long, to determine that the position of friction wheel on the rubbing surface of friction pulley [40] determine the fabric of its kind of linear speed dye gigging thickness such as dye jigger, fabric is thin more, for a short time keep to the side more in the position of wheel on the rubbing surface of friction pulley [40] of rubbing.

Claims (1)

1, a kind of power of parting a little open width constant speed dye jigger, organic frame [18], dye vat [12], cloth beam [15] and [17], the transmission case [1] that power transmission shaft [2] and [23] are installed that deflector roll [16] and expanding frame [13] and expanding frame [14] are installed in variable-speed motor [27] that spindle nose is equipped with belt pulley [29], the cylinder, power transmission shaft [2] and [23] are installed on the frame [18] gear and electromagnetic clutch conjunction and sprocket wheel and freewheel clutch conjunction and sprocket wheel and electromagnetic clutch conjunction are installed respectively, the speed that is installed with select and etc. the compositions such as electric appliance box of linear speed control device; It is characterized in that power transmission shaft [2] is gone up the sprocket wheel of installing and the sprocket wheel [5] on the freewheel clutch conjunction goes up the sprocket wheel of installation by chain and power transmission shaft [23] and the sprocket wheel [24] on the electromagnetic clutch conjunction is linking, power transmission shaft [23] goes up the sprocket wheel of installing and the sprocket wheel [25] on the freewheel clutch conjunction goes up the sprocket wheel of installation by chain and power transmission shaft [2] and the sprocket wheel [4] on the electromagnetic clutch conjunction is linking

The speed on the electric appliance box of being installed in select and etc. the linear speed control device low speed small size motor [35] is arranged, one is the power transmission shaft [37] of friction wheel, the friction wheel axle [42] of friction pulley [40] and matrix driver [41] is installed, the convex driver [59] of pin [61] is installed, tooth axle [63], electromagnet [65], connecting rod [64], lever [60], the power transmission shaft [48] of gear [49] is installed, potentiometer [46], torsion spring [51], torsion spring seat [50], torsion spring fixed cover [52], bearing block [58], plug housing [55], pivoted housing [57], fixed cover [53], the screw mandrel [43] of handwheel [45] is installed, axle bed [44], feed screw nut's transmission axle bed [39] is installed, guide rail compositions such as [38]; One be its friction wheel of power transmission shaft [37] and the friction pulley [40] of friction wheel linking, and can be along inwardly or from interior moving from the limit on the rubbing surface of friction pulley [40] to the limit, be installed in the chute of convex driver [59] by pin mounted thereto [61] and tooth axle [63] in the tooth axle [63] and link that its tail is sharp to be linked by lever [60] and connecting rod [64] and electromagnet [65].

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