Underground intelligent measuring and adjusting tool
Technical Field
The invention relates to a downhole measuring and adjusting tool applied to the technical field of oil field logging.
Background
The water injection oil displacement technology is a method for improving the oil production yield of an oil well, the pressure in the oil layer is improved by injecting water into the oil layer, the oil production amount of the oil well is increased, the seal inspection and the measurement and regulation of the current concentric water injection well need to use two instruments, namely a seal inspection instrument and a measurement and regulation instrument, and the seal inspection and the measurement and regulation need to be carried out twice, namely, the seal inspection and the measurement and regulation can be completed only by carrying out two downhole tests, and each layer needs water injection and each layer of the oil layer has different conditions, and each layer needs to be inspected, sealed, measured and regulated in operation process, so the complicated operation reduces the working efficiency, increases the construction cost and the working time, reduces the economic benefit, and simultaneously increases the intensity of workers. Although several measuring and adjusting instruments can finish the seal checking and measuring and adjusting work after one-time well descending in the prior art, the measuring and adjusting instruments still have the problems that the measuring and adjusting instruments cannot be accurately positioned with a water distributor and the adjusting arms cannot be retracted due to the fact that the instruments break down easily.
Disclosure of Invention
In order to solve the technical problems mentioned in the background technology, the invention provides an underground intelligent measuring and adjusting tool, which can complete all measurement and allocation work by one-time underground, simplifies the operation process, and can also manually lift an instrument to enable an adjusting arm to be retracted into an arm clamping bin, thereby avoiding the occurrence of the condition that the adjusting arm is clamped with a water distributor and can not move. In addition, a Hall element and magnetic steel are arranged in the corresponding position of the motor shell, and the initial position and the final position of the extension and retraction of the adjusting arm are controlled through the induction of the Hall element and the magnetic steel, so that the accurate positioning of the adjusting arm and the water distributor is realized.
The technical scheme of the invention is as follows: this kind of instrument is transferred to intelligence measure in pit, including ground controller, cable joint and inside two core joint, go up connector plug, shell and inside circuit board, the mounting bracket of circuit board, motor and the motor casing, its unique is characterized in that:
the measuring and adjusting tool further comprises a copper coupler, a mandrel, an arm clamping bin, a left arm device, a right arm device, a cam, a non-metal core, a non-metal head and a coil.
The upper end of the cable joint is in a sawtooth shape and is used for sleeving the outer layer of the cable on the upper end of the cable joint and fixing the outer layer of the cable; the cable joint is provided with a cable joint center hole and a cable joint inner cylindrical hole, a cable penetrates into the cable joint center hole and is connected with the two-core joint positioned in the cable joint inner cylindrical hole, and the lower end of the cable joint inner cylindrical hole is connected with the upper end of the upper connecting wire plug in a threaded manner; the two core connectors are positioned inside the cylindrical hole in the cable connector and are in threaded connection with the inner hole at the upper end of the upper connecting plug.
The lower end of the upper connecting plug is in threaded connection with the upper end of the shell, and an O-shaped ring is arranged in an annular groove of the upper connecting plug and used for sealing the upper connecting plug and the shell so as to prevent external water from entering the shell and damaging internal devices; the mounting rack is positioned in the shell, and an inner hole at the upper end of the mounting rack and the lower end of the mounting rack are provided with threads and can be matched with each other; the periphery of the circuit board is connected with the mounting rack through the rack hole in a threaded manner and is fixed in the mounting rack; a plurality of mounting frame holes, mounting frame lower end inner holes and mounting frame upper end inner holes are annularly distributed at the lower end of the mounting frame and can pass through electric wires; the motor control signal output end on the circuit board is connected with the control signal input end of the motor.
The lower end of the mounting frame is connected with the upper end of the motor shell through threads, a motor shell hole outside the motor shell and a motor shell outer groove can both pass through electric wires, a motor is arranged in the motor shell, a connecting shell screw is used for connecting the lower end of the motor shell and the lower end of the motor together through threads, a mandrel lower end square head is inserted in the cam square groove, and a connecting shaft screw penetrates through the cam hole and is connected with the inner part of the mandrel lower end square head through threads; the square head at the upper end of the mandrel is inserted into the square groove at the lower end of the copper coupler, and the thin head of the motor is inserted into the inner hole at the upper end of the copper coupler and used for driving the copper coupler, the mandrel and the cam to synchronously rotate.
A first magnetic steel hole and a second magnetic steel hole are formed in the outer surface of the copper coupler and used for placing magnetic steel in the holes; the lower end of the motor shell is inserted and fixed in the upper end of the clamping arm bin, the upper end of the thrust ball bearing is propped in a groove at the lower end of the motor shell, and the lower end of the thrust ball bearing is propped at the annular convex edge of the mandrel; the lower end of the shell is connected with the upper end of the clamping arm bin through threads, an O-shaped ring is arranged in an annular groove of the clamping arm bin, so that the outer part of the clamping arm bin is sealed with the shell, meanwhile, a vehicle-type sealing ring is arranged in a groove of the mandrel, so that the mandrel and the inner part of the clamping arm bin are sealed, and external water is prevented from entering the shell and damaging an internal device; after the measuring and adjusting tool is lowered into the water of the water distributor, the square through hole in the clamping arm bin is in contact with external water, then the device in the clamping arm bin is under upward water pressure, and the cam and the mandrel are upwards pressed against other devices.
The spring is positioned at the inner end of the U-shaped groove of the arm clamping bin, and the bottoms of the left arm device and the right arm device are respectively provided with a set screw for blocking the spring; the adjusting arm compresses the spring by applying inward pressure to the spring by tightening the screw in the retracting process, so that the spring has elasticity; during the extending process of the adjusting arm, the set screw is subjected to a transverse force in the spring ejecting direction under the action of the elastic force of the spring.
The square through hole in the arm clamping bin is used for limiting the left arm device and the right arm device to extend out and retract left and right; the arm connecting screw is in threaded connection with a bin hole in the outer surface of the arm clamping bin, penetrates through an annular through hole in the side face of the left arm and the right arm inside the arm clamping bin and is used for connecting the left arm device and the right arm device; the annular through hole is used for restricting the extending and retracting limit positions of the left arm device and the right arm device.
A Hall element is arranged in a straight groove on the side surface of the motor shell and is used for inducing the magnetic steel in a hole of the magnetic steel to generate an induction signal; the outer side ends of the left arm device and the right arm device are both of inclined plane structures with narrow tops and wide bottoms, and the inclined plane structures are used for manually lifting the measuring and adjusting tool upwards; an S-shaped channel is arranged beside the arm clamping bin, an electric wire led out from a coil below can be connected with a circuit board inside the mounting rack above through the S-shaped channel, epoxy resin is injected into a side hole of the S-shaped channel to completely seal the electric wire and the S-shaped channel, and external water is prevented from entering the shell to damage an internal device; a non-metal core is arranged below the arm clamping bin, and a core bin screw penetrates through a core hole and a bin bottom hole to connect and fix the arm clamping bin and the non-metal core through threaded fit; a non-metal head is arranged below the non-metal core, and the lower end of the non-metal core is inserted into a cylindrical hole in the coil; the lower end of the non-metal core is in threaded connection with an inner hole of the non-metal head; and magnetic steel is placed in the side hole of the non-metal head, and is used for generating a sensing signal when the measuring and adjusting tool is placed at a specified position and is sensed with a Hall element part on the water distributor, the sensing signal is transmitted to the circuit board, and the circuit board sends an arm opening signal to the motor.
The circuit board sends data to the ground controller through a cable, the ground controller sends different control commands to the circuit board to realize control over the tool and control the extension and retraction of the left arm device and the right arm device; and the ground controller sends control signals through the arm opening button and the arm retracting button.
The ground controller realizes the control of the measuring and adjusting tool according to the following paths, namely:
when the ground controller releases an arm opening signal, the motor drives the copper coupler, the mandrel and the cam to start to synchronously rotate, the left arm device and the right arm device extend out towards the direction of spring ejection of the corresponding lower part under the action of the elastic force of the spring, and the copper coupler, the mandrel and the cam stop rotating after the left arm and the right arm extend out to the limit positions; the Hall element and the magnetic steel in a hole of the magnetic steel are induced to generate an induction signal, and then the induction signal is transmitted to the motor to stop working.
When the ground controller releases the arm retracting signal, the motor drives the copper coupler, the mandrel and the cam to synchronously rotate, so that the left arm device and the right arm device are driven to retract into the arm clamping bin, after the left arm device and the right arm device retract into the arm clamping bin, the copper coupler, the mandrel and the cam synchronously rotate and stop to another position, at the moment, the Hall element and magnetic steel in two holes of magnetic steel on the outer surface of the copper coupler generate induction signals in an induction mode, and then the induction signals are transmitted to the motor to stop working.
When the left arm device and the right arm device do not extend out, the spring is in a compressed state, the right end of the cam is in contact with the right side face of the left arm inner groove, and the left end of the cam is in contact with the left side face of the right arm inner groove.
When the ground controller sends an arm opening signal, the motor drives the copper coupler, the mandrel and the cam to start rotating, at the moment, the contact between the right end of the cam and the right side surface of the left arm inner groove and the contact between the left end of the cam and the left side surface of the right arm inner groove are separated simultaneously, but because the spring in a compressed state has elasticity, the spring gives a transverse force in the spring ejecting direction to the set screw and drives the left arm device and the right arm device to extend outwards, therefore, in the cam rotating process, the left arm device and the right arm device extend outwards, the right side surface of the left arm inner groove is always contacted with the right end of the cam, and the left side surface of the right arm inner groove is always contacted with the left end of the cam, namely, the left arm device and the right arm device are always contacted with the cam.
And after the cam rotates to the maximum extending distance of the left arm device and the right arm device, the edge of the right end of the cam is contacted with the right side surface of the left arm inner groove, and the edge of the left end of the cam is contacted with the left side surface of the right arm inner groove.
When the ground controller sends an arm retracting signal, the motor drives the copper coupler, the mandrel and the cam to synchronously rotate, the left end of the cam gives a transverse force corresponding to the direction in which the spring below is compressed to the left side surface of the inner groove of the right arm, the right end of the cam gives a transverse force corresponding to the direction in which the spring below is compressed to the right side surface of the inner groove of the left arm, and the left arm device and the right arm device start to retract under the action of the two transverse forces until the left arm device and the right arm device are completely retracted into the arm clamping bin.
The invention has the following beneficial effects:
firstly, according to the measuring and adjusting tool provided by the invention, the two ends of the adjusting arm are of the inclined surface structures, so that once the instrument fails to cause the adjusting arm to be incapable of being withdrawn in the experiment process, the instrument can be manually lifted up under the unique inclined surface structure to enable the adjusting arm to be withdrawn into the arm clamping bin, the adjusting arm is prevented from being locked with a water distributor and incapable of moving, the adopted left and right arm structures are simple and convenient in extending and withdrawing modes and processes, and almost no abrasion is caused to the adjusting arm. And secondly, the magnetic steel in the copper coupler is induced with the Hall element in the straight groove on the side surface of the motor shell, so that the extending and retracting positions of the adjusting arm are accurately controlled, and the motion condition of the adjusting arm is monitored in real time. And thirdly, magnetic steel is placed in the side hole of the non-metal head and can be induced by a Hall element on the water distributor, so that the position is accurately obtained, a signal is transmitted to the motor to send an arm opening signal, and the non-metal head is accurately positioned and butted with the water distributor. In addition, a plurality of through holes are designed in the testing and adjusting tool, so that electric wires can pass through the through holes conveniently, and signals and data information can be transmitted; the unique structural design of the upper end and the lower end of the mounting rack can be matched with each other to be connected and expanded for standby.
Description of the drawings:
fig. 1 is a cross-sectional view of a cable connector and a two-end connection device.
Fig. 2 is a schematic structural view of a cable joint.
Fig. 3 is a schematic structural view of the housing.
Fig. 4 is a cross-sectional view of the mounting bracket.
Fig. 5 is a schematic structural view of the front surface of the motor casing.
Fig. 6 is a schematic structural view of the bottom of the motor case.
Fig. 7 is a cross-sectional view of the cam and the drive linkage above.
Fig. 8 is a schematic structural diagram of the connection between the motor and the copper coupling.
Fig. 9 is a schematic structural diagram of the connection of the cam, the mandrel and the copper coupler.
Fig. 10 is a schematic view of a card arm bin structure.
Figure 11 is a cross-sectional view of the interior of the cartridge arm.
FIG. 12 is a cross-sectional view of the adjustment arm in the square through hole of the arm magazine.
Fig. 13 is a schematic view of the structure of the adjustment arm obliquely upward from the front.
Fig. 14 is a schematic view of the structure of the back of the adjusting arm obliquely upward.
Fig. 15 is a schematic view of the front side of the extended adjustment arm.
FIG. 16 is a cross-sectional view of the card arm magazine at the junction with the non-metallic core.
Fig. 17 is a schematic view of the structure of the coil.
Figure 18 is a cross-sectional view of the cartridge and all devices below.
In the figure 2-cable connection, 203-cable connection centre hole, 202-cable connection inner cylindrical hole, 3-two core connection, 4-upper connecting plug, 41-upper connecting plug upper end inner hole, 43-upper connecting plug annular groove, 44-O-ring, 45-upper connecting plug upper end, 46-upper connecting plug lower end, 5-housing, 51-housing upper end, 52-housing lower end, 6-mounting bracket, 61-mounting bracket upper end inner hole, 62-mounting bracket lower end, 63-mounting bracket hole, 64-mounting bracket lower end inner hole, 7-circuit board, 8-mounting bracket hole, 9-motor housing, 91-motor housing outer groove, 92-motor housing hole, 93-motor housing upper end, 94-motor housing lower end, 95-motor housing lower end groove, 10-copper coupling, 101-copper coupling lower end square groove, 102-magnet one hole, 103-magnet two hole, 104-copper coupling upper end inner hole, 11-motor, 112-motor thin head, 111-coupling screw, 12-mandrel, 121-mandrel upper end square head, 122-mandrel lower end square head, 123-mandrel groove, 124-car type seal ring, 126-mandrel annular ridge, 13-cam, 139-cam hole, 135-cam square groove, 14-arm cartridge, 141-arm cartridge U-shaped groove, 142-cartridge hole, 143-arm cartridge annular groove, 145-arm cartridge upper end, 15-thrust ball bearing, 16-spring, 17-set screw, 18-square through hole, 19-link screw, 20-left arm device, 21-right arm device, 22-ramp structure, 23-left and right arm inner groove, 24-link screw, 25-annular through hole, 26-hall element, 27-coil, 271-coil inner cylindrical hole, 28-non-metallic core, 282-core bin screw, 281-core hole, 283-bin bottom hole, 284-non-metallic core lower end, 29-non-metallic head, 291-non-metallic head side hole, 30-non-metallic head inner hole, 132-cam right end, 131-cam left end, 201-left arm inner groove right side face, 211-right arm inside groove left side, 133-cam right end edge, 134-cam left end edge, 31-S channel, 311-S channel side hole.
The specific implementation mode is as follows:
the invention will be further described with reference to the accompanying drawings in which:
this kind of underground intelligent measure and regulate instrument includes: the cable connector 2, the two-core connector 3 inside the cable connector, the upper connecting plug 4, the shell 5, the circuit board 7 inside the cable connector, the mounting frame 6 of the circuit board, the motor 11, the motor shell 9, the copper coupler 10, the mandrel 12, the arm clamping bin 14, the left arm device 20 inside the cable connector, the right arm device 21, the cam 13, the nonmetal core 28 below the cable connector, the nonmetal head 29, the coil 27 and other main devices.
In fig. 1, the upper end of the cable connector 2 is serrated so as to fix the outer layer of the cable on the upper end of the cable connector 2 and prevent the cable from sliding off, so that the cable penetrates into the central hole 203 of the cable connector and is connected with the two-core connector 3 below, the lower end of the inner cylindrical hole 202 of the cable connector is screwed with the upper end 45 of the upper connecting plug, and the two-core connector 3 is positioned inside the inner cylindrical hole 202 of the cable connector and is screwed with the inner hole 41 of the upper end of the upper connecting plug.
In fig. 1, 2 and 3, the lower end 46 of the upper connecting plug is connected with the upper end 51 of the shell in a threaded manner, and the O-shaped ring 44 is arranged in the annular groove 43 of the upper connecting plug, so that the upper connecting plug 4 is sealed with the shell 5, and external water is prevented from entering the shell 5 to damage internal devices; the mounting frames 6 are positioned in the shell 5, as shown in fig. 4, the mounting frame upper end inner hole 61 and the mounting frame lower end 62 are provided with threads and can be matched with each other, that is, the mounting frame upper end inner hole 61 and the mounting frame lower end 62 can be connected together by threads and a plurality of mounting frames 6 can be connected and expanded according to the experimental requirements in the above-mentioned connection mode; circuit board 7 is in the same place and is fixed inside mounting bracket 6 through plate frame hole 63 and mounting bracket 6 threaded connection all around, when a plurality of circuit boards 7 of experiment needs, can let a plurality of mounting bracket 6 be in the same place according to the mutual threaded connection of connected mode of above-mentioned mounting bracket 6, and design a plurality of mounting bracket holes 8 around the 6 lower extremes of mounting bracket, be convenient for use crescent spanner screws up mounting bracket 6 together each other, mounting bracket lower extreme hole 64 and mounting bracket upper end hole 61 all can pass the electric wire, the electric wire that circuit board 7 drawn forth also can pass mounting bracket hole 8 simultaneously, and be connected with two core joint 3 of top, circuit board 7 can also send different signal control below motor 11.
In fig. 4, 5 and 6, the lower end 62 of the mounting bracket is connected with the upper end 93 of the motor casing by screw thread, the motor casing hole 92 and the motor casing outer groove 91 outside the motor casing 9 can both pass through the electric wire, the motor 11 is arranged inside the motor casing 9, in fig. 7, the lower end of the motor casing 9 is connected with the lower end of the motor 11 by the connecting casing screw 111, in fig. 9, the lower end square head 122 of the mandrel is inserted into the cam square groove 135, and is connected with the inner part of the lower end square head 122 of the mandrel by the connecting shaft screw 19 passing through the cam hole 139. The square head 121 at the upper end of the mandrel is inserted in the square groove 101 at the lower end of the copper coupler, and the thin head part 112 of the motor is inserted in the inner hole 104 at the upper end of the copper coupler, so that the motor 11 drives the copper coupler 10, the mandrel 12 and the cam 13 to synchronously rotate. The outer surface of the copper coupling 10 is designed with a first magnetic steel hole 102 and a second magnetic steel hole 103, magnetic steel is placed in the holes, the lower end 94 of the motor casing is inserted and fixed in the upper end 145 of the clamping arm bin, as shown in fig. 6, 7 and 9, the upper end of the thrust ball bearing 15 is supported in a groove 95 at the lower end of the motor casing, the lower end of the thrust ball bearing 15 is supported in an annular convex rib 126 of the mandrel, when the measuring and adjusting tool is lowered into the water of the water distributor, the square through hole 18 of the clamping arm bin is contacted with external water, so that the internal device of the clamping arm bin 14 is subjected to upward water pressure, the cam 13 and the mandrel 12 can upwards support and press other devices, due to the existence of the thrust ball bearing 15, the device damage caused by the displacement and the frictional contact of the cam 13, the mandrel 12 and the motor casing 9 in the vertical direction is effectively avoided, as shown in fig. 11, the lower end 52 of the, the outside of the arm clamping bin 14 is sealed with the shell 5, meanwhile, the vehicle-type sealing ring 124 is arranged in the mandrel groove 123, the mandrel 12 is sealed with the inside of the arm clamping bin 14, and the two sealing rings are used for preventing external water from entering the electric shell 5 to damage an internal device.
In fig. 12, the spring 16 is located at the inner end of the U-shaped groove 141 of the arm clamping bin, the set screws 17 are mounted at the bottoms of the left arm device and the right arm device, and are used for blocking the spring 16, and the spring 16 is compressed by the inward pressure of the spring 16 given by the set screws 17 in the retracting process of the adjusting arm, so that the spring 16 has elasticity; during the extension, the set screw 17 is given a lateral force in the spring 16 ejection direction due to the spring force of the spring 16. As shown in FIG. 10, the square through hole 18 inside the arm clamping bin is designed to be of a size that the left and right arm devices can only extend out and retract left and right, the arm connecting screw 24 is in threaded connection with the bin hole 142 on the outer surface of the arm clamping bin and penetrates through the annular through hole 25 on the side surface of the left and right arms inside the arm clamping bin 14 to play a role in connecting the left and right arms, and the two sides of the annular through hole 25 restrict the extending and retracting limit positions of the left and right arms.
The ground controller sends control signals through the arm opening button and the arm retracting button so as to control the left arm device and the right arm device to extend and retract. As shown in fig. 13 and 14, when the left and right arms are not extended, the spring 16 is in a compressed state, the cam right end 132 is in contact with the left arm inner groove right side 201, and the cam left end 131 is in contact with the right arm inner groove left side 211; when the ground controller sends an arm opening signal, the motor 11 drives the copper coupler 10, the mandrel 12 and the cam 13 to start rotating, at this time, the contact between the right end 132 of the cam and the right side 201 of the left arm inner groove and the contact between the left end 131 of the cam and the left side 211 of the right arm inner groove are about to be simultaneously separated, but because the spring 16 in a compressed state has elasticity, the spring 16 gives a transverse force to the spring 16 in the ejecting direction of the fastening screw 17 and drives the left arm and the right arm to extend outwards, therefore, during the rotation of the cam 13, the left arm and the right arm slowly extend outwards, the right side 201 of the left arm inner groove is always in contact with the right end 132 of the cam, the left side 211 of the right arm inner groove is always in contact with the left end 131 of the cam, namely, the left arm and the right arm are always in contact with the cam 13, after the cam 13 rotates for some angles, the left arm and the left arm reach the maximum extending distance due, and the cam left end edge 134 contacts the right arm inner groove left side 211; when the ground controller sends an arm retracting signal, the motor 11 drives the copper coupler 10, the spindle 12 and the cam 13 to synchronously rotate, meanwhile, the left end 131 of the cam gives a transverse force corresponding to the compression direction of the spring 16 below to the left side surface 211 of the inner groove of the right arm, the right end 132 of the cam gives a transverse force corresponding to the compression direction of the spring 16 below to the right side surface 201 of the inner groove of the left arm, and the left arm and the right arm start to retract under the action of 2 transverse forces until the left arm and the right arm are completely retracted into the arm clamping bin 14. The left arm and the right arm have simple and unique motion process and mode, and the structure is simple and easy to understand.
When the ground controller releases an arm retracting signal, the motor 11, the copper coupler 10, the mandrel 12 and the cam 13 synchronously rotate to drive the left arm and the right arm to retract, but when the power supply system is powered off, the motor 11 is damaged or the copper coupler 10, the mandrel 12 and the cam 13 have faults, the left arm and the right arm cannot retract. In this situation, the outer ends of the left and right arms are designed into the slope structure 22 with a narrow top and a wide bottom, so that the measuring and adjusting instrument can be lifted up manually, in the lifting up process, the outer water distributor cylinder device extrudes the slope structure to generate a force vertically acting on the slope structure 22, the force can be decomposed into a horizontal inward transverse force and a vertical downward pressure, but due to the failure of the device, the cam 13 is positioned in the left and right arm inner grooves 23 and is stopped, as shown in fig. 15, the left and right sides of the cam 13 at the position have a spare space and the width of the left and right arm inner grooves 23 is large, the cam 13 which is stopped cannot prevent the left and right arms from retracting inwards, so the left and right arms can be pushed to retract inwards under the two forces until the left and right arms retract into the arm clamping bin 14, and the method effectively avoids the problem that the adjusting arm cannot retract due to the failure in the experimental process, the unique structural design enables the left and right arm devices to be manually retracted.
In fig. 5 and 7, a hall element 26 is placed in a straight groove on the side surface of a motor case 9, when a ground controller releases an arm opening signal, a motor 11 drives a copper coupling 10, a mandrel 12 and a cam 13 to start to rotate synchronously, a left arm and a right arm start to extend outwards under the action of spring force, the copper coupling 10, the mandrel 12 and the cam 13 stop rotating and stop at a certain position after the left arm and the right arm extend to extreme positions, and at the moment, the hall element 26 in the straight groove on the side surface of the motor case 9 and magnetic steel in a magnetic steel hole 102 on the outer surface of the copper coupling 10 generate an induction signal through induction, and then the induction signal is transmitted to the motor 11 to stop working; when the ground controller releases the arm retracting signal, the motor 11 drives the copper coupler 10, the mandrel 12 and the cam 13 to synchronously rotate, so that the left arm and the right arm are driven to retract into the arm clamping bin 14, after the left arm and the right arm are retracted into the arm clamping bin 14, the copper coupler 10, the mandrel 12 and the cam 13 synchronously rotate and stop at another position, at the moment, the Hall element 26 in the straight groove on the side surface of the motor shell 9 and the magnetic steel in the two magnetic steel holes 103 on the outer surface of the copper coupler 10 generate induction signals in an induction mode, and then the induction signals are transmitted to the motor 11 to stop working. Therefore, the left arm and the right arm can be accurately extended out and retracted to corresponding positions without error, and the motion and position conditions of the left arm and the right arm can be monitored in real time.
In fig. 18, an S-shaped channel 31 is arranged beside the arm clamping bin 14, the electric wire led out from the lower coil 27 can be connected with the circuit board 7 in the upper mounting rack through the S-shaped channel 31, and epoxy resin is injected into the side hole 311 of the S-shaped channel to completely seal the electric wire and the S-shaped channel 31, so as to prevent external water from entering the shell 5 and damaging internal devices, in fig. 16, a non-metal core 28 is arranged below the arm clamping bin 14, and a core bin screw 282 penetrates through a core hole 281 and a bin bottom hole 283 to connect and fix the arm clamping bin 14 with the non-metal core 28 through threaded fit; the nonmetal core 28 below is non-metal head 29, nonmetal core lower extreme 284 inserts the inside cylinder hole 271 of coil, the material of core is the nonmetal purpose and prevents to produce the vortex with coil 27 and send the heat to cause the damage to the part, and coil 27 has the function of wireless charging, nonmetal core lower extreme 284 and non-metal head hole 30 threaded connection, and place the magnet steel in the nonmetal head side hole 291, place the hall element part induction production inductive signal on appointed position and the injection mandrel when shown measure and regulate the instrument, and transmit circuit board 7, then circuit board 7 sends out the arm signal transmission and gives motor 11.