CN107063682B - Guide plate sprocket detection device - Google Patents
Guide plate sprocket detection device Download PDFInfo
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- CN107063682B CN107063682B CN201710280260.2A CN201710280260A CN107063682B CN 107063682 B CN107063682 B CN 107063682B CN 201710280260 A CN201710280260 A CN 201710280260A CN 107063682 B CN107063682 B CN 107063682B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/02—Gearings; Transmission mechanisms
- G01M13/021—Gearings
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/24—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for determining value of torque or twisting moment for tightening a nut or other member which is similarly stressed
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Abstract
The invention discloses a guide plate sprocket detection device which comprises a pushing cylinder, a driving motor, a fixed block and a sprocket, wherein the sprocket is meshed with a chain on a guide plate, the fixed block is formed by combining two metal plates into an L shape, a rotating shaft of the driving motor is connected with a speed reducer, an output shaft of the speed reducer penetrates through one metal plate of the fixed block, a main shaft is sleeved on the output shaft of the speed reducer, a torque detection assembly is arranged on a base, the torque detection assembly is mutually linked with a connecting shaft, and when the torque detection assembly is used for detecting, the pushing cylinder pushes the fixed block to the guide plate, and the sprocket is meshed with the chain on the guide plate. According to the guide plate chain wheel detection device, the guide plate chain can be driven to rotate in an effective utilization mode of meshing of the chain wheels through the arrangement of the driving motor and the chain wheels, and meanwhile, the output torque of the driving motor can be effectively detected through the arrangement of the torque detection assembly, so that whether the guide plate chain wheel is too tight or too loose at the moment is detected.
Description
Technical Field
The invention relates to a detection device, in particular to a guide plate sprocket detection device.
Background
In the production process of the guide plates, one chain wheel is clamped between the two guide plates, and after the riveting of the two guide plates is finished, the chain is installed on the guide plates, so that the production of the guide plates can be finished preliminarily.
However, the riveting tightness of the guide plates in the prior art is indefinite, the problem that the guide plates are too tight or too loose in clamping the chain wheel is likely to occur, so that the influence on the rotation of the chain wheel in the use process of the chain saw is influenced, namely, when the clamping between the guide plates is too tight, the friction between the chain wheel and the guide plates is increased, so that the chain wheel is difficult to rotate, when the clamping between the guide plates is too loose, the friction between the chain wheel and the guide plates is too small, the rotation speed of the chain wheel is faster than that of gears in a chain saw body in the use process of the chain saw, the problem that the chain is loose easily occurs, the installation condition of the guide plates needs to be detected, the detection is realized by manually pulling the chain on the guide plates when the installation condition of the existing guide plates is detected, whether the installation of the guide plates is too loose or too tight is judged by the human feeling, and the manual detection is needed, and the detection is not accurate by the manual method, so that the detection accuracy is not high, the quality of the guide plates is easy to occur, and the problem is caused.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a guide plate chain wheel detection device which can accurately and effectively detect the installation tightness state between guide plates.
In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides a baffle sprocket detection device, includes pushing cylinder, driving motor, fixed block and sprocket, the sprocket meshes with the chain on the baffle mutually, the fixed block comprises two metal sheets combination into L type, driving motor's pivot is connected with the speed reducer, the output shaft of speed reducer passes a metal sheet of fixed block, has cup jointed the main shaft on it, and this fixed block is relative to another metal sheet of speed reducer's output shaft and pushing rod fixed connection who pushes away the cylinder, the sprocket cover is on the output shaft of speed reducer, the main shaft is including being cylindric base, the perforation has been seted up on the base coaxial, the rotatable wearing of speed reducer's output shaft is established at the perforation, the one end of base is equipped with the fixed plate, fixed plate and the metal sheet fixed connection of fixed block, the upper end of speed reducer's output shaft is equipped with sprocket fixed component, the sprocket fixed component includes connecting axle, upper sprocket gland and lower sprocket gland, this fixed block and the clamp plate that is discoid, the connecting axle is coaxial fixed on the terminal surface of speed reducer's output shaft, the clamp plate is located two opposite screw hole, the screw clamp is set up to two terminal surface, the screw clamp is located between two terminal surface opposite screw hole, two terminal surface, two screw hole side of the screw hole are connected to each other to the screw down on the terminal surface, the screw down plate is connected to the screw down plate is equipped with the screw down, the base is provided with a torque detection assembly, the torque detection assembly is linked with the connecting shaft, and when the detection is carried out, the pushing cylinder pushes the fixed block to the guide plate, and the chain wheel is meshed with the chain on the guide plate.
The torque detection assembly comprises a torque output calculator, a power detector and a speed detection device, wherein the power detector is coupled with a machine body of a driving motor and is also coupled with the torque output calculator and is used for detecting output power of the driving motor to be input into the torque output calculator, the speed detection device comprises a lantern ring and a fixed ring, the lantern ring is sleeved on a connecting shaft, the fixed ring is rotatably sleeved on the outer side of the lantern ring, the fixed ring is coaxially fixed on the upper end face of a base and is coupled with the driving motor, a chute is formed in an inner ring wall of the fixed ring, a sliding block is slidably connected in the chute, a varistor shell is arranged on a wall of one end of the chute, the varistor shell is of a hollow structure, coils extending along the length direction of the varistor shell are laid on the inner wall of the varistor shell, one end of the slider is fixedly connected with a connecting rod, two ends of the spring are respectively abutted against the slider and the varistor shell, one end of the connecting rod is fixedly connected with the slider, the other end of the connecting rod extends into the varistor shell and is fixedly connected with two conducting pieces, two conducting pieces are mutually connected with two conducting pieces and are respectively connected with two connecting pieces, and are respectively connected with a power supply.
As a further improvement of the present invention, the power detector includes:
the current detection circuit is coupled with the machine body of the driving motor, is also coupled with the torque output calculator, and is used for detecting the current in the driving motor and transmitting the current into the torque output calculator;
the voltage detection circuit is coupled to the body of the driving motor, is also coupled to the torque output calculator, and is used for detecting the voltage in the driving motor and transmitting the voltage to the torque output calculator.
As a further improvement of the present invention, the current detection circuit includes:
the collector of the triode Q is coupled with a resistor R1 and then is connected with a power supply, the emitter is grounded, the base is coupled with a resistor R2 and then is connected with the power supply, the base is coupled with a resistor R3 and then is coupled with a torque output calculator, and the emitter is further coupled with a resistor R4 and then is coupled with the torque output calculator;
the voltage detection circuit comprises a detection resistor R5 and a detection resistor R6, wherein one end of the detection resistor R5 is coupled to the body of the driving motor, is further coupled to the collector of the triode Q, is further coupled to the torque output calculator, the other end of the detection resistor R5 is grounded, and one end of the detection resistor R6 is coupled to the detection resistor R5, and the other end of the detection resistor R6 is coupled to the power supply.
As a further improvement of the present invention, the torque output calculator includes:
the control CPU is coupled with the wiring terminals of the lantern ring through the I/O interfaces, is used for receiving the motor current value output by the current detection circuit and the motor voltage value output by the voltage detection circuit, and is used for receiving the speed value output by the wiring terminals, calculating the torque value according to the current value, the voltage value and the speed value and outputting the torque value;
the display module is coupled with the I/O interface of the control CPU and used for receiving and displaying the torque value output by the control CPU.
As a further improvement of the present invention, the control CPU internally calculates the torque value by a calculation formula, which is as follows:
wherein N is torque, U is voltage value obtained by detection of a voltage detection circuit, I is current value obtained by detection of a current detection circuit, ρ is a conversion coefficient, and R is an output resistance value of a wiring terminal.
The invention has the beneficial effects that the guide plate is firstly arranged at one side of the chain wheel in the detection process through the arrangement of the pushing cylinder, the driving motor, the fixed block and the chain wheel, and then the pushing rod is pushed by the pushing cylinder, so that the chain wheel can be effectively pushed to the guide plate, and the chain wheel is meshed with the chain on the guide plate, thus the driving motor can drive the chain wheel to rotate, and further the chain on the guide plate is driven to rotate, and the output torque of the pushing cylinder can be effectively detected in the rotation process of the chain wheel through the arrangement of the torque detection assembly, so that whether the chain wheel on the guide plate at the moment is in an excessively loose or excessively tight state can be judged according to the torque.
Drawings
FIG. 1 is an overall construction diagram of a guide sprocket detecting apparatus of the present invention;
FIG. 2 is an overall construction view of the retaining ring of FIG. 1;
FIG. 3 is a block diagram of a torque detection assembly;
fig. 4 is a circuit diagram of a power detector.
Detailed Description
The invention will be further described in detail with reference to examples of embodiments shown in the drawings.
Referring to fig. 1 to 4, a guide plate sprocket detection apparatus of this embodiment includes a pushing cylinder 1, a driving motor 2, a fixed block 3 and a sprocket 31, the sprocket 31 is meshed with a chain on a guide plate, the fixed block 3 is formed by combining two metal plates into an L-shape, a rotating shaft of the driving motor 2 is connected with a speed reducer 21, an output shaft of the speed reducer 21 passes through one metal plate of the fixed block 3, a main shaft 22 is sleeved on the metal plate, the fixed block 3 is fixedly connected with a push rod of the pushing cylinder 1 relative to another metal plate of the output shaft of the speed reducer 21, the sprocket 31 is sleeved on the output shaft of the speed reducer 21, the main shaft 22 includes a cylindrical base 4, a through hole 6 is coaxially provided on the base 4, the output shaft of the speed reducer 21 is rotatably arranged in the through hole 6, one end of the base 4 is provided with a fixed plate, the fixed plate is fixedly connected with the metal plate of the fixed block 3, the upper end part of the output shaft of the speed reducer 21 is provided with a chain wheel fixing component 5, the chain wheel fixing component 5 comprises a connecting shaft 53, an upper chain wheel gland 51 and a lower chain wheel gland 52, the upper chain wheel gland 51 and the lower chain wheel gland 52 respectively comprise a screwing block 512 and a disc-shaped pressing plate 511, the connecting shaft 53 is coaxially fixed on the upper end face of the output shaft of the speed reducer 21, the two pressing plates 511 are sleeved on the connecting shaft 53, one ends of the two pressing plates 511 are oppositely arranged, the chain wheel 31 is clamped between the two pressing plates 511, the two screwing blocks 512 are respectively fixed at the opposite ends of the pressing plates 511, the screwing blocks 512 are of a strip-shaped structure, when the two pressing plates 511 are sleeved on the connecting shaft 53, the screwing block 512 at the lower part is mutually abutted with the upper end face of the output shaft of the speed reducer 21, the upper end face of the output shaft of the speed reducer 21 is provided with a plurality of threaded holes, the threaded holes are arranged at the position, close to the side edge of the screwing block 512, of the upper end face of the output shaft of the speed reducer 21, screws are connected in the threaded holes in a threaded manner, the screws are mutually abutted against the screwing block 512, the base 4 is provided with a torque detection component 7, the torque detection component 7 is mutually linked with the connecting shaft 53, during detection, the pushing cylinder 1 pushes the fixed block 3 to the guide plate to mesh the chain wheel 31 with a chain on the guide plate, during detection, the pushing cylinder 1 firstly acts to extend the pushing rod towards the guide plate, during the extension process of the pushing rod, the fixed block 3 is driven to move towards the guide plate, and during the movement process of the fixed block 3, the main shaft 22 moves together, so that the chain wheel 31 is driven to the guide plate, the chain wheel 31 is meshed with the chain on the guide plate is realized, then, through the rotation of the driving motor 2, the output shaft of the speed reducer 21 is rotated, and then the connecting shaft 53, the upper chain wheel gland 51 and the lower chain wheel gland 52 are rotated, so that the chain wheel 31 is driven to rotate, and the effect of uniform rotation of the driving chain wheel 31 is effectively realized, wherein the driving motor 2 in the embodiment adopts a direct current motor, the cost is lower, and the driving mode is simpler, when the chain wheel 31 is fixed, firstly, one pressing plate 511 is sheathed on the connecting shaft 53 with one screwing block 512, wherein the screwing block 512 is downward and is mutually abutted with the output shaft of the speed reducer 21, then the chain wheel 31 is put on, then the other pressing plate 511 is covered, the other screwing block 512 is back to the chain wheel 31, then the screwing block 512 is screwed by an external wrench, and the fixing of the chain wheel 31 can be effectively completed, therefore, in the process of stopping the rotation of the sprocket 31 after the completion, the sprocket 31 will continue to rotate due to the action of inertia or when the sprocket clamp 31 is clamped, so that the problem that the sprocket 31 rotates with the pressing plate 511 or the connecting shaft 53 rotates independently to loosen the whole connection can occur, and in the embodiment, the screw hole and the screw are arranged, the screw can be used for supporting the screwing block 512 in the process of stopping the rotation, the screwing block 512 is prevented from rotating, and the effect of keeping the connection tight is realized.
As a modified specific embodiment, the torque detecting assembly 7 comprises a torque output calculator 73, a power detector 71 and a speed detecting device 72, wherein the power detector 71 is coupled with the body of the driving motor 2 and is also coupled with the torque output calculator 73, and is used for detecting that the output power of the driving motor 2 is input into the torque output calculator 73, the speed detecting device 72 comprises a collar 721 and a fixed ring 722, the collar 721 is sleeved on the connecting shaft 53, the fixed ring 722 is rotatably sleeved on the outer side of the collar 721, the fixed ring 722 is coaxially fixed on the upper end face of the base 4 and is coupled with the driving motor 2, a sliding groove 7221 is formed on the inner ring wall of the fixed ring 722, a sliding block 7222 is slidably connected in the sliding groove 7221, a variable resistance housing 7223 is arranged on one end of the sliding groove 7221, the wall of the variable resistance housing 7223 is in a hollow structure, the coil extending along the length direction is laid on the inner wall of the fixed ring 722, one end of the sliding block 7222 is fixedly connected with a connecting rod 7225, a spring 7226 is sleeved on the connecting rod 7225, two ends of the spring 7226 are respectively abutted against the sliding block 7222 and the varistor shell 7223, one end of the connecting rod 7225 is fixedly connected with the sliding block 7222, the other end of the connecting rod extends into the varistor shell 7223 and is fixedly connected with a conducting sheet, the conducting sheet is mutually abutted against the coil and is conductive, two connecting terminals are arranged on the outer annular wall of the fixed ring 722 and are respectively and electrically connected with the conducting sheet and the coil, one connecting terminal is connected with an external power supply, the other connecting terminal is coupled with a torque output calculator 73, in the detection process, firstly, the power detector 71 and the speed detection device 72 can simultaneously input the output power of the driving motor 2 and the speed of a sprocket at the moment into the torque output calculator 73, the torque output calculator 73 can effectively obtain the torque generated by the sprocket at this time by calculating the output power and the speed, and under the condition of a certain speed, determine the value of the torque, whether the torque is larger or smaller than a threshold range, if the torque is larger than the threshold range, the force loaded by the sprocket at this time is larger, then the sprocket on the guide plate is in an overtightening state, and if the torque is smaller than the threshold range, the force loaded by the sprocket at this time is smaller, then the sprocket on the guide plate is in an overtightening state, thus the problem of low detection precision caused by adopting a manual detection mode in the prior art can be effectively avoided, and meanwhile, in the rotating process of the connecting shaft 53, the sleeve ring 721 sleeved with the contact block 7222 rotates together with the sleeve ring 721 due to the friction force, the spring 7226 and the varistor housing 7224 are used, the contact block 7222 cannot rotate together after overcoming a part of elastic force, thus, a resistance with a resistance value can be output outwards through the cooperation of the conductive sheet and the coil in the varistor housing 7224, when the rotating speed of the connecting shaft 53 becomes higher, the spring 7226 is compressed more, the output resistance value of the speed detecting device 72 becomes smaller, mainly because the coil number of the connecting circuit becomes smaller, the length of the wire becomes shorter, the resistance can be definitely known to be smaller according to the principle of the resistance value of the wire, the resistance output by the rotating speed of the connecting shaft 53 is different compared with the original rotating speed, and the resistance is multiplied by a conversion coefficient, the effect of detecting the rotational speed of the connecting shaft 53 at this time can be effectively achieved, and the rotational speed can be fed back to the driving motor 2 and the torque output calculator 73 in real time, so that on the one hand, the rotational speed of the driving motor 2 can be stabilized, and on the other hand, a value of the rotational speed can be provided to the torque output calculator 73, so that the output torque calculation basis of the torque output calculator 73 for the connecting shaft 53 can be effectively provided.
As an improved embodiment, the power detector 71 includes:
the current detection circuit 711 is coupled to the body of the driving motor 2, and further coupled to the torque output calculator 73, and is configured to detect a current in the driving motor 2 and transmit the current to the torque output calculator 73;
the voltage detection circuit 712 is coupled to the body of the driving motor 2, and is further coupled to the torque output calculator 73, and is configured to detect the voltage in the driving motor 2, and transmit the detected voltage to the torque output calculator 73, and according to the calculation formula p=ui of the power, the real-time output current and the output voltage of the driving motor 2 can be effectively detected through the arrangement of the current detection circuit 711 and the voltage detection circuit 712, so that the effect of detecting the real-time power of the driving motor 2 at this time can be effectively realized.
As an improved embodiment, the current detection circuit 711 includes:
a triode Q, the collector of which is coupled with a resistor R1 and then is connected with a power supply, the emitter is grounded, the base is coupled with a resistor R2 and then is connected with the power supply, the base is coupled with a resistor R3 and then is coupled with a torque output calculator 73, and the emitter is further coupled with a resistor R4 and then is coupled with the torque output calculator 73;
the voltage detection circuit 712 includes a detection resistor R5 and a detection resistor R6, where one end of the detection resistor R5 is coupled to the body of the driving motor 2, and is further coupled to the collector of the triode Q, and the end is further coupled to the torque output calculator 73, and the other end of the detection resistor R5 is grounded, and one end of the detection resistor R6 is coupled to the detection resistor R5, and the other end is coupled to the power supply, during the operation of the driving motor 2, the current flowing in the driving motor 2 flows into the collector of the triode Q, and the current of the external power supply is input into the base of the triode Q, and according to the current relationship among the base, the collector and the emitter of the triode Q, when the base current is unchanged, the current of the emitter changes along with the collector, and is in a certain proportion to the current change of the collector, so that the real-time current of the driving motor 2 can be effectively detected through the arrangement of the triode Q, and the real-time current of the driving motor 2 is input into the torque output calculator 73, and the voltage of the driving motor 2 can be easily and the voltage can be easily detected through the arrangement of the resistor R5 and the resistor R6, so that the input of the voltage can be easily and effectively calculated.
As an improved embodiment, the torque output calculator 73 includes:
a control CPU731 having a plurality of I/O interfaces thereon, the control CPU731 being coupled to the current detection circuit 711 and the voltage detection circuit 712 through the I/O interfaces for receiving a motor current value output from the current detection circuit 711 and a motor voltage value output from the voltage detection circuit 712, the control CPU731 being further coupled to the connection terminals of the collar 721 through the I/O interfaces for receiving a speed value output from the connection terminals, and calculating a torque value according to the current value, the voltage value, and the speed value and outputting the torque value;
the display module 732 is coupled to the I/O interface of the control CPU731, and is configured to receive the torque value output by the control CPU731 and display the torque value, and by adopting the setting of the control CPU731, the output voltage of the voltage detection circuit 712, the output current of the current detection circuit 711, and the speed output by the speed detection device 72 can be effectively received, and then the output torque of the sprocket at this time can be effectively calculated according to the values, and according to the torque, whether the guide plate driven by the sprocket at this time is in an excessively tight or excessively loose state can be determined, and the calculated torque is compared with the internal torque threshold range, and then the comparison result is displayed by adopting the display module 732, wherein the control CPU731 of the embodiment adopts a singlechip with the model number of STC89C52, which is simple and convenient to use and low in price, and the display module adopts an LCD liquid crystal display to display chinese character, and displays an excessively tight or excessively loose character, so that the whole detection assembly 7 is more visual and clear.
As a specific embodiment of the improvement, the control CPU731 internally calculates the torque value by a calculation formula as follows:
wherein N is torque, U is a voltage value obtained by detection of the voltage detection circuit, I is a current value obtained by detection of the current detection circuit, ρ is a resistance and rotation speed conversion coefficient, R is an output resistance value of the connection terminal, and according to a calculation formula n=9550×p/V of torque, P is output power of the motor, V is a rotation speed of the motor at this time, therefore, power of the motor can be calculated according to a power company by using current of the current detection circuit 711 and voltage detected by the voltage detection circuit 712, the rotation speed can be represented by resistance of the connection terminal, wherein the conversion coefficient can be input in advance by itself, and as for the threshold range, when the sprocket 31 is engaged with a guide plate determined to be proper, then an output torque range of the torque output calculator 73 is used as a torque threshold range, so that determination of the torque threshold range can be realized, and meanwhile, in a direct calculation mode using voltage, resistance and current is adopted by the formula, a direct calculation mode is not needed, after the current detection circuit 711 and the voltage detection circuit 712 detect voltage and current, the calculation is performed in advance, thus, the calculated amount of the torque output calculator 73 can be reduced, the calculated load of the effective calculator 73 can be reduced, and the torque output calculator 73 can be controlled more easily.
In summary, the guide plate sprocket detection device of the present invention can effectively realize that the sprocket 31 is meshed with the chain on the guide plate by the pushing action of the pushing cylinder 1 in the detection process through the pushing cylinder 1, the driving motor 2, the fixed block 3 and the sprocket 31, then the sprocket 31 can be effectively driven to rotate by the rotation driving action of the driving motor 2, and then the torque detection assembly 7 detects the output torque of the sprocket, so that the detection of whether the sprocket in the guide plate meshed with the sprocket 31 is in an overtightening or overtightening state can be effectively realized.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above examples, and all technical solutions belonging to the concept of the present invention belong to the protection scope of the present invention. It should be noted that modifications and adaptations to the present invention may occur to one skilled in the art without departing from the principles of the present invention and are intended to be within the scope of the present invention.
Claims (5)
1. A baffle sprocket detection device, its characterized in that: including pushing cylinder (1), driving motor (2), fixed block (3) and sprocket (31), sprocket (31) meshes with the chain on the baffle mutually, fixed block (3) are formed into the L type by two metal sheets combination, driving motor (2)'s pivot is connected with speed reducer (21), the output shaft of speed reducer (21) passes a metal sheet of fixed block (3), cup joints main shaft (22) on it, and another metal sheet of this fixed block (3) for speed reducer (21) output shaft and pushing cylinder (1) push rod fixed connection, sprocket (31) cover is on the output shaft of speed reducer (21), main shaft (22) are including being cylindric base (4), perforation (6) have been seted up on the coaxial on base (4), the rotatable wearing of output shaft of speed reducer (21) is established in perforation (6), the one end of base (4) is equipped with the fixed plate, the fixed plate is fixedly connected with the metal sheet of fixed block (3), the last fixed plate of output shaft (21) is equipped with sprocket (5), sprocket (5) and sprocket (52) are connected down in fixed shaft (52), the upper chain wheel gland (51) and the lower chain wheel gland (52) comprise screwing blocks (512) and disc-shaped pressing plates (511), the connecting shaft (53) is coaxially fixed on the upper end face of an output shaft of the speed reducer (21), the two pressing plates (511) are sleeved on the connecting shaft (53), one ends of the two pressing plates (511) are oppositely arranged, the chain wheel (31) is clamped between the two pressing plates (511), the two screwing blocks (512) are respectively fixed at one ends of the pressing plates (511) opposite to each other, the screwing blocks (512) are of a strip-shaped structure, when the two pressing plates (511) are sleeved on the connecting shaft (53), the screwing blocks (512) below are mutually abutted to the upper end face of the output shaft of the speed reducer (21), a plurality of threaded holes are formed in the upper end face of the output shaft of the speed reducer (21) and are close to the positions of the screwing blocks (512), screws are connected in the threaded holes, and are in threaded connection with the screws, and are in mutual detection with the screwing blocks (512), and the detection block (4) are meshed with the chain guide plate (3) and the detection block (3) are meshed with the detection block (1) when the chain guide plate (3) is pushed to the detection block; the torque detection assembly (7) comprises a torque output calculator (73), a power detector (71) and a speed detection device (72), wherein the power detector (71) is coupled with a machine body of the driving motor (2) and is also coupled with the torque output calculator (73) and is used for detecting output power of the driving motor (2) to be input into the torque output calculator (73), the speed detection device (72) comprises a collar (721) and a fixed ring (722), the collar (721) is sleeved on a connecting shaft (53), the fixed ring (722) is rotatably sleeved on the outer side of the collar (721), the fixed ring (722) is coaxially fixed on the upper end face of the base (4), a sliding groove (7221) is formed in the inner annular wall of the fixed ring (722), a sliding block (7222) is slidably connected in the sliding groove (7221), a variable resistance housing (7223) is arranged on the wall at one end of the sliding groove (7221), the variable resistance housing (7223) is of a hollow structure, a coil is sleeved on the inner wall of the variable resistance housing (7223) along the length direction of the sliding block (7221), two ends (7222) are fixedly connected with a connecting rod (7225) and the two ends (7222) are fixedly connected with the variable resistance housing (7223), one end of the connecting rod (7225) is fixedly connected with the sliding block (7222), the other end of the connecting rod extends into the varistor shell (7223) and is fixedly connected with a conducting strip, the conducting strip is mutually abutted to the coil and is conductive, two wiring terminals are arranged on the outer annular wall of the fixed ring (722) and are respectively electrically connected with the conducting strip and the coil, one of the two wiring terminals is connected with an external power supply, the other one of the two wiring terminals is coupled with the torque output calculator (73) and is also coupled with the machine body of the driving motor (2).
2. The guide plate sprocket detection apparatus as set forth in claim 1, wherein: the power detector (71) includes:
the current detection circuit (711) is coupled to the body of the driving motor (2) and also coupled to the torque output calculator (73) and is used for detecting the current in the driving motor (2) and transmitting the current into the torque output calculator (73); the voltage detection circuit (712) is coupled to the body of the driving motor (2), and is further coupled to the torque output calculator (73) for detecting the voltage in the driving motor (2) and transmitting the detected voltage to the torque output calculator (73).
3. The guide plate sprocket detection apparatus as set forth in claim 2, wherein: the current detection circuit (711) includes:
a triode Q, the collector of which is coupled with a resistor R1 and then is connected with a power supply, the emitter is grounded, the base is coupled with a resistor R2 and then is connected with the power supply, the base is coupled with a resistor R3 and then is coupled with a torque output calculator (73), wherein the emitter is further coupled with a resistor R4 and then is coupled with the torque output calculator (73);
the voltage detection circuit (712) comprises a detection resistor R5 and a detection resistor R6, wherein one end of the detection resistor R5 is coupled to the body of the driving motor (2), is further coupled to the collector of the triode Q, is further coupled to the torque output calculator (73), the other end of the detection resistor R5 is grounded, and one end of the detection resistor R6 is coupled to the detection resistor R5, and the other end of the detection resistor R6 is coupled to a power supply.
4. A guide plate sprocket detecting apparatus according to claim 2 or 3, wherein: the torque output calculator (73) includes:
a control CPU (731) having a plurality of I/O interfaces thereon, the control CPU (731) being coupled to the current detection circuit (711) and the voltage detection circuit (712) through the I/O interfaces for receiving the motor current value output by the current detection circuit (711) and receiving the motor voltage value output by the voltage detection circuit (712), the control CPU (731) being further coupled to the connection terminal of the collar (721) through the I/O interfaces for receiving the speed value output by the connection terminal, and calculating a torque value according to the current value, the voltage value and the speed value and outputting the torque value;
and the display module (732) is coupled to the I/O interface of the control CPU (731) and is used for receiving and displaying the torque value output by the control CPU (731).
5. The guide plate sprocket detection apparatus as set forth in claim 4, wherein: the control CPU (731) calculates a torque value by a calculation formula as follows:
wherein N is torque, U is voltage value obtained by detection of a voltage detection circuit, I is current value obtained by detection of a current detection circuit, ρ is a resistance and rotation speed conversion coefficient, and R is an output resistance value of a connecting terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710280260.2A CN107063682B (en) | 2017-04-25 | 2017-04-25 | Guide plate sprocket detection device |
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| CN109900398B (en) * | 2019-03-22 | 2023-09-29 | 长春大学 | Extrusion type torque measuring device based on sheet type force sensitive resistor |
| CN109916784B (en) * | 2019-04-04 | 2020-04-14 | 东北大学 | Device and method for measuring torque of rotating non-spherical particles |
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| GB305774A (en) * | 1927-12-23 | 1929-02-14 | Charles Francis Cowdrey | Improvements in or relating to brake testing machines |
| CN101769805A (en) * | 2010-03-02 | 2010-07-07 | 五邑大学 | Test bed for testing friction torque property of double ball screws |
| CN104155102A (en) * | 2014-07-15 | 2014-11-19 | 重庆大学 | Transmission and friction experiment table for multifunctional mechanical part |
| CN105424247A (en) * | 2015-12-31 | 2016-03-23 | 金华职业技术学院 | Power detection device and method of harvester |
| CN206787823U (en) * | 2017-04-25 | 2017-12-22 | 浙江硕和机器人科技有限公司 | A kind of guide plate sprocket wheel detection means |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| GB305774A (en) * | 1927-12-23 | 1929-02-14 | Charles Francis Cowdrey | Improvements in or relating to brake testing machines |
| CN101769805A (en) * | 2010-03-02 | 2010-07-07 | 五邑大学 | Test bed for testing friction torque property of double ball screws |
| CN104155102A (en) * | 2014-07-15 | 2014-11-19 | 重庆大学 | Transmission and friction experiment table for multifunctional mechanical part |
| CN105424247A (en) * | 2015-12-31 | 2016-03-23 | 金华职业技术学院 | Power detection device and method of harvester |
| CN206787823U (en) * | 2017-04-25 | 2017-12-22 | 浙江硕和机器人科技有限公司 | A kind of guide plate sprocket wheel detection means |
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