CN218777079U

CN218777079U - Overload protection device for miniature conical double-screw extruder

Info

Publication number: CN218777079U
Application number: CN202223270887.5U
Authority: CN
Inventors: 周栋梁; 张宾; 张吉良
Original assignee: Shanghai Changkai Electromechanical Technology Co ltd
Current assignee: Shanghai Changkai Electromechanical Technology Co ltd
Priority date: 2022-12-07
Filing date: 2022-12-07
Publication date: 2023-03-31
Anticipated expiration: 2032-12-07

Abstract

The application discloses an overload protection device of a miniature conical double-screw extruder, which comprises a base, a mounting frame and an extrusion mechanism, wherein the extrusion mechanism comprises an extrusion assembly and a driving assembly; the extrusion assembly comprises an installation plate, a connecting rod, a first shell and a second shell, wherein two first groove bodies are formed in one side, away from the installation frame, of the first shell, two second groove bodies are formed in one side, close to the installation frame, of the second shell, the positions of the second groove bodies correspond to those of the first groove bodies one to one, the extrusion assembly further comprises two extrusion screws, a cavity defined by the first groove bodies and the second groove bodies is matched with the extrusion screws, and the driving assembly is used for driving the two extrusion screws to rotate; be provided with the determine module that is used for carrying out the detection to the pressure in the first casing on the mounting bracket. Pressure in the determine module detects in this application in to the first casing and knows for the staff, has reduced because of reasons such as material jam cause extrude the great moment of torsion of screw rod output to influence the probability of equipment normal operating.

Description

Overload protection device for miniature conical double-screw extruder

Technical Field

The utility model relates to an extruder technical field, in particular to miniature toper double screw extruder overload protection device.

Background

With the rapid development of polymer blends and nanocomposites, there is an urgent need for a laboratory mixing apparatus for new material research applications because the raw material yield obtained in the laboratory at the initial stage is very low or the material itself is expensive and many new materials are available only in "g" units. Therefore, blending equipment must be small to process these trace materials while establishing the necessary flow patterns to achieve a well-dispersed and uniformly distributed structure.

The small-sized twin-screw extruder in the prior art is not provided with a pressure detection and control system, and equipment is easy to malfunction or damage when the pressure in a screw barrel exceeds the designed bearing range of the equipment. In the process of using the double-screw extruder, if the die head of the extruder is blocked and the driving motor still works, the screw outputs larger torque, so that the gear box, the screw and other parts are easily damaged, and the service life of the extruder is shortened.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model provides a miniature toper double screw extruder overload protection device.

The above technical purpose of the present invention can be achieved by the following technical solutions: the overload protection device of the miniature conical double-screw extruder comprises a base, a mounting frame fixed with the upper surface of the base and an extrusion mechanism arranged on the mounting frame, wherein the extrusion mechanism comprises an extrusion assembly and a driving assembly;

the extrusion assembly comprises a mounting plate fixed on the mounting frame, the mounting plate is provided with a mounting hole, the extrusion assembly further comprises a connecting rod rotatably connected with the side wall of the mounting hole, a first shell hinged with one side, away from the mounting frame, of the connecting rod, and a second shell connected with one side, away from the mounting frame, of the first shell, two first groove bodies are formed in one side, away from the mounting frame, of the first shell, two second groove bodies are formed in one side, close to the mounting frame, of the second shell, the positions of the second groove bodies correspond to those of the first groove bodies one to one, the extrusion assembly further comprises extrusion screw rods, a cavity defined by the first groove bodies and the second groove bodies is matched with the extrusion screw rods, the number of the extrusion screw rods is two, and the driving assembly is used for driving the two extrusion screw rods to rotate;

be provided with the determine module that is used for carrying out the detection to the pressure in the first casing on the mounting bracket.

Through adopting above-mentioned technical scheme, this double screw extruder is in the use, drive assembly orders about two and extrudes the screw rod and rotates, so that two extrude the screw rod cooperation and extrude the granulation to the material in the cavity that first cell body and second cell body enclose, at this in-process, the pressure of determine module in to first casing detects for the staff knows, the great moment of torsion of screw rod output has been extruded because of reasons such as material jam has been reduced, and influence equipment normal operating's probability, be favorable to each zero drive part in the protective apparatus, with the life of extension equipment.

Further, the determine module includes the movable rod fixed with first casing bottom and runs through the dwang that sets up on the movable rod and fix with the movable rod, set up the hole of stepping down that supplies the movable rod to pass on the mounting bracket, the dwang rotates with the mounting panel lateral wall to be connected, determine module still includes the fixed pull rod of one end of keeping away from first casing with the movable rod and with the fixed force sensor of pull rod lower extreme, fixed surface on force sensor bottom and the base.

Through adopting above-mentioned technical scheme, at the in-process that uses this twin-screw extruder, when pressure in the first casing is great, vertical direction downstream is all followed to first casing and second casing, and movable rod, dwang and pull rod constitute the lever, trigger force sensor, and when the numerical value that force sensor shows exceeded the setting value, reach the upper limit value of equipment normal operating promptly, and the staff can be through observing the numerical value that force sensor shows, can make equipment move in normal range.

Further, a controller and an installation shell are fixed on the installation frame, the controller is electrically connected with the tension sensor, and a buzzer electrically connected with the controller is fixed at the top of the installation shell.

Through adopting above-mentioned technical scheme, the pressure numerical value that tension sensor detected transmits the controller with the form of signal of telecommunication, and when the pressure value exceeded the default, the work of controller control bee calling organ to this warning personnel on duty in time carry out corresponding control, make equipment maintain the operation in normal range.

Further, one side of the second shell, which is close to the mounting rack, is also provided with a circulation tank and a reflux tank which are communicated with one of the second tank bodies, the reflux tanks are provided with two reflux tanks which are respectively communicated with the bottoms of the two second tank bodies, and one end of each circulation tank is communicated with the bottoms of the two reflux tanks.

Through adopting above-mentioned technical scheme, the cavity that first cell body and second cell body enclose constitutes the banburying cavity, and the setting of circulation groove and backwash channel for the material is in banburying cavity inner loop many times banburying, has improved the banburying effect of material.

Furthermore, one side of the second shell far away from the mounting rack is provided with a feeding hole and a discharging hole, a feeding plug matched with the feeding hole in an inserting mode is arranged in the feeding hole, and a discharging plug matched with the discharging hole in an inserting mode is arranged in the discharging hole.

By adopting the technical scheme, after the charging plug is opened, materials can be added into the internal mixing cavity, and after the discharging plug is opened, discharging operation can be carried out.

Furthermore, the side wall of the second shell is provided with an overflow hole communicated with the discharge hole, and the discharge plug is provided with an arc-shaped guide groove.

Through adopting above-mentioned technical scheme, when the pressure that pressure sensor detected exceeded the upper limit, the staff need rotate the stopper of unloading for arc guiding groove all communicates with overflow hole and backward flow groove, and at this moment, the material in the banburying cavity is unloaded from the overflow hole, has reduced the banburying pressure in the banburying cavity, is favorable to the protective apparatus spare part. When equipment normally operates, the staff only need rotate the stopper of unloading for arc guiding groove all communicates with circulation groove and backwash tank, makes the material in the banburying cavity inner loop banburying many times with this, in order to improve the banburying effect of material.

Further, drive assembly installs on the mounting bracket and with motor output shaft coaxial driving shaft, fixed cover locate driving epaxial action wheel including being fixed in dead lever on the mounting bracket, with the fixed motor of dead lever lower extreme, rotate, fix the protective housing on the mounting bracket, run through set up in the protective housing top and rotate the driven shaft of being connected with the protective housing, fix the cover locate driven epaxial follow driving wheel, be used for connecting the drive belt of follow driving wheel and action wheel, fix the cover locate driven epaxial driving gear and run through set up in the protective housing on the diapire and rotate the actuating lever of being connected with the protective housing, the actuating lever is equipped with two and extrudes the screw rod upper end with two respectively and fixes, two equal fixed cover is equipped with the driven gear with driving gear engagement on the actuating lever, and two driven gear dislocation set, be connected through coupling assembling between the output shaft of motor and the driving shaft.

Through adopting above-mentioned technical scheme, the motor work back is connected through coupling assembling and is driven driving shaft and action wheel rotation, and under the effect of drive belt, from the driving wheel rotation and drive the driven shaft and rotate to this makes driving gear and two driven gear all rotate, thereby makes two extrusion screw rotate, carries out abundant banburying to the material in two banburying cavities.

Further, coupling assembling includes the lower shaft coupling fixed with the output shaft of motor, with the torque sensor that the shaft coupling top is fixed down and with the fixed last shaft coupling in torque sensor top, it is fixed with the driving shaft lower extreme to go up the shaft coupling, just torque sensor is connected with the controller electricity.

Through adopting above-mentioned technical scheme, torque sensor's setting can carry out real-time supervision to the moment of torsion of motor working in-process output to transmit the moment of torsion for the controller, be favorable to the staff through adjusting motor speed, so that the moment of torsion maintains in equipment normal operating range.

To sum up, the utility model discloses following beneficial effect has:

1. in the application, in the use process of the double-screw extruder, the driving assembly drives the two extrusion screws to rotate, so that the two extrusion screws are matched and extrude and granulate materials in a cavity defined by the first groove body and the second groove body, in the process, the detection assembly detects the pressure in the first shell for workers to know, the greater torque output by the extrusion screws due to material blockage and other reasons is reduced, the normal operation probability of equipment is influenced, and the zero driving parts in the equipment are protected, so that the service life of the equipment is prolonged;

2. in this application, the pressure numerical value that tension sensor detected transmits the controller with the form of signal of telecommunication, and when the pressure value exceeded the default, the work of controller control bee calling organ to this warning person on duty in time carries out corresponding control, makes equipment maintain the operation in normal within range.

Drawings

Fig. 1 is a schematic overall structure diagram of an embodiment of the present invention;

FIG. 2 is a schematic view of the structure of FIG. 1 from another perspective;

FIG. 3 is a schematic structural view of an embodiment of the present invention for highlighting an extrusion mechanism;

FIG. 4 is an enlarged schematic view at A in FIG. 2;

fig. 5 is an enlarged schematic view at B in fig. 3.

In the figure: 1. a base; 2. a mounting frame; 21. a hole for abdication; 22. a controller; 23. mounting a shell; 231. a buzzer; 3. an extrusion mechanism; 31. an extrusion assembly; 311. mounting a plate; 3111. mounting holes; 312. a connecting rod; 313. a first housing; 3131. a first tank body; 314. a second housing; 3141. a second tank body; 3142. a circulation tank; 3143. a reflux tank; 315. extruding a screw; 32. a drive assembly; 321. fixing the rod; 322. a motor; 323. a drive shaft; 324. a driving wheel; 325. a protective shell; 326. a driven shaft; 327. a driven wheel; 328. a transmission belt; 329. a driving gear; 3210. a drive rod; 3211. a driven gear; 4. a detection component; 41. a movable rod; 42. rotating the rod; 43. a pull rod; 44. a tension sensor; 5. a connecting assembly; 51. a lower coupling; 52. a torque sensor; 53. an upper coupling; 6. a feed aperture; 61. a charging plug; 7. a discharge hole; 71. a discharging plug; 711. an arc-shaped guide groove; 8. an overflow aperture.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application; it is obvious that the embodiments described are only a part of the embodiments of the present application, and not all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without making creative efforts based on the embodiments in the present application belong to the protection scope of the present application.

As shown in fig. 1-5, the embodiment of the present application discloses a miniature conical twin-screw extruder overload protection device, which comprises a base 1, a mounting frame 2, an extrusion mechanism 3 and a detection assembly 4. The base 1 is a horizontally arranged rectangular plate-shaped structure, and the bottom of the mounting frame 2 is fixed with the upper surface of the base 1.

The extruding mechanism 3 is arranged on the mounting frame 2, the extruding mechanism 3 comprises an extruding component 31 and a driving component 32, and the extruding component 31 comprises a mounting plate 311, a connecting rod 312, a first shell 313, a second shell 314 and an extruding screw 315. The mounting plate 311 is a vertically arranged plate-shaped structure, the side wall of one side of the mounting plate is fixed to the mounting frame 2, and four mounting holes 3111 distributed in a rectangular array are formed in the mounting plate 311. The connecting rods 312 are rod-shaped, one end of each connecting rod is rotatably connected to the side walls of the two sides of the mounting hole 3111, the side walls of the first housing 313 are hinged to the side, away from the mounting frame 2, of the connecting rods 312, and the four connecting rods 312 are arranged and distributed in a rectangular array with respect to the first housing 313. The second housing 314 is connected to a side of the first housing 313 away from the mounting frame 2, and a screw (not shown) in clearance fit with the second housing 314 penetrates through the second housing 314 and is in threaded connection with the first housing 313. In this embodiment, two first groove bodies 3131 are disposed on a side of the first housing 313 away from the mounting block 2, two second groove bodies 3141 are disposed on a side of the second housing 314 close to the mounting block 2, the positions of the second groove bodies 3141 correspond to the positions of the first groove bodies 3131 one by one, and the second groove bodies 3141 and the corresponding first groove bodies 3131 form an internal mixing cavity (not shown in the figure) of the twin-screw extruder. The number of the extrusion screws 315 is two, and the two extrusion screws 315 are respectively matched with the two banburying cavities.

The driving assembly 32 is used for driving the two extrusion screws 315 to rotate, and the driving assembly 32 includes a fixing rod 321, a motor 322, a driving shaft 323, a driving wheel 324, a protective shell 325, a driven shaft 326, a driven wheel 327, a transmission belt 328, a driving gear 329, a driving rod 3210 and a driven gear 3211. The fixing rod 321 is a vertically arranged round rod-shaped structure, the upper end of the fixing rod 321 is fixed with the mounting frame 2, the motor 322 is fixed with the lower end of the fixing rod 321, and the output shaft of the motor 322 vertically extends upwards. The driving shaft 323 is a cylindrical structure, the axis of the driving shaft 323 coincides with the axis of the output shaft of the motor 322, and the driving shaft 323 is connected with the output shaft of the motor 322 through a connecting component 5. Specifically, the connecting assembly 5 includes a lower coupler 51 fixed to an output shaft of the motor 322, a torque sensor 52 fixed to a top of the lower coupler 51, and an upper coupler 53 fixed to a top of the torque sensor 52, and the upper coupler 53 is fixed to a lower end of the driving shaft 323.

The axis of the driving wheel 324 coincides with the axis of the output shaft of the motor 322, and the driving wheel 324 is sleeved on the driving shaft 323 and fixed with the driving shaft 323. The protective housing 325 is fixed on the mounting frame 2, the driven shaft 326 is a vertically arranged cylindrical structure, and the driven shaft 326 penetrates through the top of the protective housing 325 and is connected with the protective housing 325 in a rotating manner. The axis of the driven wheel 327 coincides with the axis of the driven shaft 326, and the driven wheel 327 is sleeved on the driven shaft 326 and fixed with the driven shaft 326. The driving belt 328 is an annular belt-shaped structure disposed in a closed manner, and the inner surface of the driving belt is tightly abutted to the outer surface of the driven wheel 327 and the outer surface of the driving wheel 324, so as to connect the driven wheel 327 and the driving wheel 324. The axis of the driving gear 329 coincides with the axis of the driven shaft 326, and the driving gear 329 is sleeved on the driven shaft 326 and fixed with the driven shaft 326. The driving rods 3210 penetrate through the bottom wall of the protective shell 325 and are rotatably connected with the protective shell 325, and two driving rods 3210 are arranged and fixed to the upper ends of the two extrusion screws 315 respectively. The axis of the driven gear 3211 coincides with the axis of the driving rod 3210, the driven gear 3211 is sleeved on the driving rod 3210 and fixed to the driving rod 3210, two driven gears 3211 are provided and located on the two driving rods 3210, and the two driven gears 3211 are arranged in a staggered manner.

The detection assembly 4 is disposed on the mounting frame 2 for detecting the pressure in the first housing 313, and the detection assembly 4 includes a movable rod 41, a rotating rod 42, a pull rod 43, and a tension sensor 44. The movable rod 41 is a rod-shaped structure, the mounting frame 2 is provided with a yielding hole 21 for the movable rod 41 to pass through, and one end of the movable rod 41 is fixed to the bottom of the first housing 313. The rotating rod 42 is a round rod structure, and is disposed on the movable rod 41 and fixed with the movable rod 41, and the rotating rod 42 is rotatably connected with the side wall of the mounting plate 311. The pull rod 43 is vertically arranged, the upper end of the pull rod 43 is fixed with one end of the movable rod 41 far away from the first shell 313, the top of the tension sensor 44 is fixed with the lower end of the pull rod 43, and the bottom of the tension sensor 44 is fixed with the upper surface of the base 1. In this embodiment, be fixed with controller 22 and installation shell 23 on the mounting bracket 2, controller 22 is connected with tension sensor 44 and torque sensor 52 are all electrically, and the installation shell 23 top is fixed with the bee calling organ 231 of being connected with controller 22 electricity, and one side that mounting bracket 2 was kept away from to second casing 314 has seted up charge-air 6 and discharge opening 7, is provided with in the charge-air 6 to peg graft complex charging plug 61 with charge-air 6, is provided with in the discharge opening 7 to peg graft complex discharge plug 71 with discharge opening 7. In order to enhance the banburying effect of the materials, one side of the second shell 314 close to the mounting rack 2 is further provided with two circulation grooves 3142 and two reflux grooves 3143 which are communicated with one of the second groove bodies 3141, the reflux grooves 3143 are respectively communicated with the bottoms of the two second groove bodies 3141, and one end of each circulation groove 3142 is communicated with the bottoms of the two reflux grooves 3143.

In the using process of the double-screw extruder, after a worker opens the feeding plug 61, materials to be subjected to banburying can be added into a banburying cavity through the feeding hole 6, after the motor 322 works, the driving shaft 323 and the driving wheel 324 are connected and driven to rotate through the connecting component 5, the driven wheel 327 rotates and drives the driven shaft 326 to rotate under the action of the driving belt 328, the driving wheel 329 and the two driven gears 3211 are enabled to rotate, so that the two extrusion screws 315 rotate, the materials in the two banburying cavities are fully banburied, the circulation groove 3142 and the backflow groove 3143 are arranged, the materials are circularly and repeatedly banburied in the banburying cavity, the banburying effect of the materials is improved, in the process, when the pressure in the banburying cavity is too large, the banburying cavity and the first shell 313 move downwards under the action of pressure, the lever tension sensor 44 is triggered through the lever, when the pressure value exceeds a preset value, the controller 22 controls the operation of the warning buzzer 231 to work, so that the operator on duty can timely control the operation of the motor 322, the equipment to maintain the operation in a normal range, and play a good overload protection role in protecting the twin-screw extruder.

In order to reduce the probability of overlarge pressure in the internal mixing cavity due to excessive materials in the internal mixing cavity, the side wall of the second shell 314 is provided with an overflow hole 8 communicated with the discharge hole 7, and the discharge plug 71 is provided with an arc-shaped guide groove 711. When the pressure detected by the pressure sensor exceeds the upper limit, the worker needs to rotate the discharging plug 71, so that the arc-shaped guide groove 711 is communicated with the overflow hole 8 and the backflow groove 3143, at the moment, the materials in the internal mixing cavity are discharged from the overflow hole 8, the internal mixing pressure in the internal mixing cavity is reduced, and the protection of equipment parts is facilitated. When the equipment normally operates, a worker only needs to rotate the discharging plug 71, so that the arc-shaped guide groove 711 is communicated with the circulating groove 3142 and the backflow groove 3143, the materials are circularly mixed for multiple times in the mixing cavity, and the mixing effect of the materials is improved.

It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection not only limits in above-mentioned embodiment, and the fan belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. Miniature toper double screw extruder overload protection device, including base (1), with base (1) upper surface fixed's mounting bracket (2) and set up extrusion mechanism (3) on mounting bracket (2), characterized by: the extrusion mechanism (3) comprises an extrusion assembly (31) and a driving assembly (32);

the extruding component (31) comprises a mounting plate (311) fixed on a mounting frame (2), the mounting plate (311) is provided with a mounting hole (3111), the extruding component (31) further comprises a connecting rod (312) rotatably connected with the side wall of the mounting hole (3111), a first shell (313) hinged to one side, away from the mounting frame (2), of the connecting rod (312), and a second shell (314) connected to one side, away from the mounting frame (2), of the first shell (313), two first groove bodies (3131) are arranged on one side, away from the mounting frame (2), of the second shell (314), two second groove bodies (3141) are arranged on one side, close to the mounting frame (2), of the second shell (313), the positions of the second groove bodies (3141) correspond to the positions of the first groove bodies (3131) one to one, the extruding component (31) further comprises extruding screw rods (315), a cavity formed by the first groove body (3131) and the second groove body (3141) is matched with the extruding screw rods (315), the extruding screw rods (315) are arranged, and the driving component (32) is used for driving the two screw rods (315) to rotate;

the mounting frame (2) is provided with a detection assembly (4) for detecting the pressure in the first shell (313).

2. The overload protection device for the miniature conical twin-screw extruder according to claim 1, wherein: detection component (4) include with first casing (313) bottom fixed movable rod (41) and run through set up on movable rod (41) and with movable rod (41) fixed dwang (42), set up on mounting bracket (2) and supply yielding hole (21) that movable rod (41) passed, dwang (42) rotate with mounting panel (311) lateral wall to be connected, detection component (4) still include with movable rod (41) keep away from fixed pull rod (43) of the one end of first casing (313) and with pull rod (43) lower extreme fixed force sensor (44), force sensor (44) bottom and base (1) fixed surface.

3. The overload protection device for the miniature conical twin-screw extruder according to claim 2, wherein: be fixed with controller (22) and installation shell (23) on mounting bracket (2), controller (22) are connected with force sensor (44) electricity, installation shell (23) top is fixed with bee calling organ (231) of being connected with controller (22) electricity.

4. The overload protection device for the miniature conical twin-screw extruder according to claim 3, wherein: circulation groove (3142) and reflux groove (3143) with one of them second cell body (3141) intercommunication are still seted up to one side that second casing (314) are close to mounting bracket (2), reflux groove (3143) are equipped with two and communicate with two second cell bodies (3141) bottoms respectively, the one end and two reflux grooves (3143) bottoms of circulation groove (3142) all communicate.

5. The overload protection device for the miniature conical double-screw extruder according to claim 4, which is characterized in that: one side of the second shell (314) far away from the mounting frame (2) is provided with a feeding hole (6) and a discharging hole (7), a feeding plug (61) which is in plug-in connection with the feeding hole (6) and matched with the feeding hole is arranged in the feeding hole (6), and a discharging plug (71) which is in plug-in connection with the discharging hole (7) and matched with the discharging hole is arranged in the discharging hole (7).

6. The overload protection device for the miniature conical twin-screw extruder according to claim 5, wherein: the side wall of the second shell (314) is provided with an overflow hole (8) communicated with the discharge hole (7), and the discharge plug (71) is provided with an arc-shaped guide groove (711).

7. The overload protection device for the miniature conical twin-screw extruder according to claim 6, wherein: drive assembly (32) including being fixed in dead lever (321) on mounting bracket (2), motor (322) fixed with dead lever (321) lower extreme, rotate install on mounting bracket (2) and with motor (322) output shaft coaxial driving shaft (323), driving wheel (324) on driving shaft (323) are located to the fixed cover, be fixed in protective housing (325) on mounting bracket (2), run through set up in protective housing (325) top and with the protective housing (325) rotate the driven shaft (326) be connected, driven wheel (327) on fixed cover locates driven shaft (326), be used for connecting drive belt (328) of driven wheel (327) and driving wheel (324), fixed cover locates driving gear (329) on driven shaft (326) and run through set up on protective housing (325) inner bottom wall and with protective housing (325) rotation be connected actuating lever (3210), actuating lever (3210) are equipped with two and extrude screw rod (315) upper end fixed with two respectively, two all fixed cover is equipped with driven gear (3211) with driving gear (329) meshing on actuating lever (3210), and two driven gear (3211) dislocation set, the output shaft of motor (322) and driving shaft (323) are connected through driving shaft (323) coupling assembling 5).

8. The overload protection device for the miniature conical double-screw extruder according to claim 7, which is characterized in that: coupling assembling (5) including with the lower shaft coupling (51) that the output shaft of motor (322) is fixed, with torque sensor (52) that shaft coupling (51) top is fixed down and with fixed last shaft coupling (53) in torque sensor (52) top, it is fixed with driving shaft (323) lower extreme to go up shaft coupling (53), just torque sensor (52) are connected with controller (22) electricity.