33results about How to "Control the degree of bending" patented technology

The invention relates to a variable-stiffness continuous type mechanism based on an air pressure locking principle. The variable-stiffness continuous type mechanism comprises a continuous type mechanism body, a state switching device used for changing the stiffness and flexibility states of the continuous type mechanism body and a pose control system used for controlling the bending degree of the continuous type mechanism body; the continuous type mechanism body is formed by a base and joints through friction sliding blocks, the base and the joints are connected in series, one end of each joint is provided with a connecting disc with a square shaft hole, and the other end of each joint is provided with a first friction disk provided with a round shaft hole; and each friction sliding block comprises a second friction disk matched with the corresponding first friction disk. The state switching device comprises a cylindrical silica gel air bag, an air guide pipe and a port. The pose control system is composed of steel wires and a driving motor, one end of each steel wire is connected with the joints, and the other end of each steel wire is connected with the driving motor. By means of the variable-stiffness continuous type mechanism, the technologies of positive pressure control and air bag locking are adopted, the continuous type mechanism can be extremely high in stiffness in the locking state, the response speed is high, rigid and flexible state switching is rapid, and the beneficial effects that the stiffness is variable, the response speed is high, and the positioning stiffness is high are achieved.

The invention provides a wiring mechanism and a refrigerator. A refrigerator body of the refrigerator is provided with a compartment with a forward opening, a drawer type door body can move in the front-back direction so as to open or close the compartment, and an electrical component is arranged on the drawer type door body; and the wiring mechanism comprises a cable used for supplying power forthe electrical component and a drag chain for containing a part of the cable, one end of the drag chain is fixed to the interior of the compartment, the wiring mechanism further comprises a supportingframe fixed to the rear side of the drawer type door body, and a fixing box fixed on the supporting frame, the fixing box is provided with a first inserting port, and the other end of the drag chainis inserted into the first inserting port. According to the wiring mechanism and the refrigerator, cable deformation and damage can be effectively avoided through the drag chain, the stable electricalconnection between the drawer type door body and the compartment is guaranteed, moreover, the fixing box provided with the first inserting port is fixedly arranged on the supporting frame, so that inserting installation of the drag chain is realized, the assembly is more convenient and faster, and working is reliable.

The invention relates to the technical field of fitness equipment, and discloses an apparatus for comprehensively training arm strength and abdominal muscles. The apparatus comprises a base, a supporting cylinder is fixedly installed at one side of the top of the base, an armrest rod is fixedly installed at the other side of the top of the base, the other end of the armrest rod is fixedly connected with the top of one side of the supporting cylinder, and a supporting spring is fixedly connected to the bottom of an inner cavity of the supporting cylinder. By means of the apparatus for comprehensively training the arm strength and abdominal muscles, through the adjustment of the height and the angle, a user bends down to place the abdomen over a sponge pad with a short distance, the dual hands tightly hold a lifting yoke rod, magnetic repulsion force is applied to a permanent magnet through a first electromagnet, so that the lifting yoke rod is stressed downwards, which is equal to the fact that gravity is applied to the hands of the user, and the user keeps the position of the lifting yoke rod unchanged so that arm load bearing and vertical bending training can be conducted. Throughmachine assisting, the user more scientifically controls the bending degree, and precisely controls the unbending and bending degree of the arms, and thus an excellent training effect is achieved.

The invention belongs to the technical field of tool clamps, and particularly relates to a self-centering clamp for grinding a ceramic cylinder sleeve. The self-centering clamp comprises a rotating shaft, a jacking device, a supporting frame, a motor and a connecting rod. According to the self-centering clamp, the motor drives the rotating shaft to rotate, the rotating shaft drives a second rotating disc to move in the axial direction of the rotating shaft through threads, and the threads on the rotating shaft are left-handed thread and right-handed thread respectively, so that the second rotating disc moves to a first rotating disc; in the process, the second rotating disc extrudes elastic spokes, the elastic spokes are bent towards the inner wall of the ceramic cylinder sleeve, the middle portions of the elastic spokes extrude the inner wall of the ceramic cylinder sleeve, and the ceramic cylinder sleeve is clamped; and the elastic spokes are used for clamping the ceramic cylinder sleeve, so that the elastic spokes contact the inner wall of the ceramic cylinder sleeve more closely, the ceramic cylinder sleeve is prevented from being damaged in the clamping process, the elastic spokes are tightly pressed against the inner wall of the ceramic cylinder sleeve, the elastic spokes are integrally elastic, impact force is avoided in the machining process of the ceramic cylinder sleeve, and damage to the ceramic cylinder sleeve is avoided.

The invention discloses a bending machine with an adjustable feeding depth, and belongs to the field of bending machines. A milling groove iron block is arranged on the left side of the top of a base,a threaded rod is arranged on the right side of the top of the base, the bottom of the outer wall of the threaded rod is sleeved with a driven gear, the right side of the base is provided with a servo motor through an installing plate, the top of the outer wall of an upper end output shaft of the servo motor is sleeved with a driving gear, the driving gear is connected with the driven gear through a chain, the top of the outer wall of the threaded rod is sleeved with a cross moving block, a sliding hole is formed in the right side of the top of the cross moving block, a sliding rod is inserted in the sliding hole, the bottom of the sliding rod is fixedly connected with the top of the base, the left side of the bottom of the cross moving rod is provided with a squeezing block, and a firstthreaded hole is formed in the center of the top of the squeezing block. By means of the bending machine, the feeding depth of a bending knife is conveniently adjusted to prevent the complicated changing of the bending knife or the milling groove iron block, force bearing of the bending knife is uniform after the adjustment is completed, and the bending knife does not easily tilt.

The invention discloses a packaging structure of a flexible circuit board. The packaging structure comprises a packaging side cover for quickly positioning the circuit board, an integrated heat dissipation plate used for dissipating heat of the circuit board is installed on the surface of one side of the packaging side cover, and the surface of the other side of the packaging side cover is provided with a high-temperature heat conduction plate which is used for assisting the heat dissipation of the port of the circuit board. According to the invention, an evaporation chamber and an absorbent cotton block are arranged, rapid heat dissipation of the circuit board and operation of controlling the bending degree are realized in a relatively sealed environment, during implementation, once the circuit board emits heat, the heat of the conductor on the surface of the circuit board can be quickly dissipated by evaporating the moisture in the absorbent cotton block; then, the heated quick expansion table is heated to expand to extrude moisture in the absorbent cotton block; and when the space in the evaporation chamber is adjusted to be reduced by increasing the evaporation moisture of theabsorbent cotton block, the absorbent cotton block is pressed, so that the regulation and control column is pressed, and therefore, the operation of controlling the bending degree of the circuit boardcan be realized.

The invention discloses a backward bending device for dance training of a student. The backward bending device comprises a base, wherein an accommodating groove is formed in the front surface of the base; a fixing belt is fixedly connected to the inner wall of the accommodating groove; a fixing column is fixedly connected to the center of the top of the base; a rotating screw is in threaded connection with the inner wall of the fixing column; a positioning slot is formed in the surface of the rotating screw; a positioning screw is in threaded connection with the inner wall of the positioning slot. Through arrangement of the positioning screw, after confirmation of the using height of the backward bending device for dance training of the student, under coordination of a rotating disc, the positioning screw moves and runs through the positioning slot and the rotating screw does not rotate; through arrangement of a telescopic rod, after confirmation of the using height of the backward bending device for dance training of the student, the telescopic rod is expended and is inserted into a positioning hole, the positioning slot and the positioning screw are confirmed on the same horizontal line, and thus the positioning screw conveniently fixes the rotating screw.

The invention provides a wiring mechanism and a refrigerator. The wiring mechanism is used for realizing the electrical connection between a drawer type door body and a refrigerator body, the refrigerator body is provided with a chamber which is opened forwards, the drawer type door body is capable of moving in the front and back direction to open or close the chamber, and the drawer type door body is provided with an electrical component; the wiring mechanism comprises a cable for supplying power to the electrical component and a drag chain for accommodating part of the cable, and one end ofthe drag chain is used for being fixed inside the chamber; and the wiring mechanism further comprises a support frame fixed on the rear side of the drawer type door body and a fixing box fixedly clamped with the support frame, and the other end of the drag chain is connected to the fixing box. The wiring mechanism effectively avoids the cable from deformation and damage through the drag chain, andthe drag chain is fixedly mounted through the fixing box fixedly clamped on the support frame, the assembly is more convenient, the structure is pleasing to the eye, and the work is safer and more reliable.

The invention discloses a dance training back bending device for a student. The device comprises a base, a storage groove is formed in the front surface of the base, a fixing belt is fixedly connectedto the inner wall of the storage groove, a fixing pile is fixedly connected to the center of the top of the base, and a rotary lead screw is in threaded connection with the inner wall of the fixing pile; a locating groove is formed in the surface of the rotary lead screw, and a locating lead screw is in threaded connection with the inner wall of the locating groove. According to the dance training back bending device for the student, through the arrangement of the locating lead screw, after the using height of the dance training back bending device for the student is confirmed, the locating lead screw moves and penetrates through the locating groove under the cooperation of a rotary disc, so that the rotary lead screw does not rotate; through the arrangement of a telescopic rod, after theusing height of the dance training back bending device for the student is confirmed, the telescopic rod extends and is inserted in a locating hole, and after it is confirmed that the locating grooveand the locating lead screw are on the same horizontal line, convenience is brought for the locating lead screw to fix the rotary lead screw.

The invention discloses a twisting device for a steel rail. The twisting device comprises a substrate, a base for supporting the substrate, a turntable and a supporting frame. The twisting device is driven by hydraulic cylinders and is connected with the hydraulic cylinders through lug plates; when the two hydraulic cylinders synchronously operate, the turntable can be driven to move up and down, so that the bending degree of the steel rail in the vertical direction can be controlled; when one hydraulic cylinder moves actively, and the other hydraulic cylinder moves passively, the turntable can be controlled to rotate to control the bending degree of the steel rail in the horizontal direction, so that the steel rail can be twisted.

The invention provides a wire routing mechanism and a refrigerator. The wire routing mechanism is used for realizing the electrical connection between a drawer type door body and a refrigerator body,and an electrical component is arranged on the drawer type door body. The wire routing mechanism comprises a mounting box fixed in a compartment, a support frame fixed on the rear side of the drawer type door body and a fixed box fixed on the support frame, wherein a drag chain is connected between the mounting box and the fixed box. The wire routing mechanism further comprises a cable used for supplying power to the electrical component, and part of the cable is housed inside the drag chain. A first connector extending into the mounting box and a second connector extending into the fixed boxare arranged at the two ends of the cable. The wire routing mechanism protects the cable through the drag chain. Moreover, the two ends of the drag chain are respectively fixed on the mounting box andthe fixed box, so that the possible extrusion, deformation and damage of the exposed cable are effectively avoided. Thus, the stable electrical connection between the drawer type door body and the compartment is ensured, and the work is safe and reliable.

The invention relates to the technical field of building materials, and discloses an efficient automatic bending device for building rubber plate detection. The efficient automatic bending device for building rubber plate detection comprises a placing table, and the surface of the placing table is fixedly connected with an upper shell. A rotating disc intermittently rotates in a reciprocating mode to drive four clamping frames to be close to one another, so that rubber plates in the clamping frames are inserted into inserting plates to realize the fixation; dielectric plates move between positive plates and negative plates of polar plate sets, so that a ratchet wheel rotates clockwise, and the subsequent bending operation is triggered; the ratchet wheel drives a rotating plate to rotate through linkage rods, and the inserting plates move synchronously, so that the rubber plates in a fixed state are partially bent, and automatic bending of the rubber plates is achieved; and an external switch energizes electromagnets to generate magnetism, the linkage rods rotate to be away from the ratchet wheel, the rotating plate does not rotate along with the ratchet wheel any more and resets under the action of a torsional spring on the outer side of the rotating plate, the rubber plates moves synchronously, the bending degree of the rubber plates can be controlled according to actual bending requirements, and the practicability is higher.

The invention provides a device for accurately bending a printed circuit board. The device comprises a base, a micrometer, a fixed arm and a pressing block, wherein two gaskets on the base are used for bearing the printed circuit board; the micrometer comprises a rotating part, a fixed part, and a shaft part which is linked with the rotating part; the fixed arm is fixed on the base and is used for fixing the fixed part of the micrometer; and the pressing block is fixed on the shaft part of the micrometer in a rotatable way.

The invention discloses an optical imaging system, image pick-up module and electronic device. The optical imaging system includes a first lens group, a second lens group and a third lens group whichare distributed from an object side to an image side. The first lens group has negative refraction power and comprises at least one lens; a surface closest to the image side is concave at a position close to an optical axis. The second lens group has positive refraction power and comprises at least two lenses; the surface, closest to the image side, of the second lens group is a convex surface ata position close to the optical axis. The third lens group hasrefraction power and comprises at least three lenses; the surface, closest to the object side, of the third lens group is a concave surface at a position close to the optical axis; the surface, closest to the image side, of the third lens group is a convex surface at a position close to the optical axis. The optical imaging system satisfies the following conditional expression: SD2/R2<1. The optical imaging system can maintain good optical performance while maintaining small size and light weight, and can well capture details of a photographed object.

The invention provides a photosensitive chip assembly, a camera module and electronic equipment. The photosensitive chip assembly comprises a photosensitive chip and a compensation film, and the photosensitive chip comprises a microlens array; the compensation film is arranged on the back surface of the photosensitive chip, and the thermal expansion coefficient of the compensation film is greater than or equal to that of the micro-lens array.

The invention discloses a method for theoretically calculating the roundness error of a ring piece in the rolling process of a large ring piece. The method comprises the following steps that (1) radial rolling process parameters of the ring piece are obtained; 2) calculating the force of a roller on the ring piece in the rolling process of the ring piece based on a slip line theory; 3) calculating the maximum bending moment of the ring piece; 4) setting the rolling rigidity condition of the ring piece; 5) calculating the bending angle of the ring piece; (6) calculating the contact arc length of a core roller of the bent ring piece and the ring piece; 7) calculating the roundness error of the bent ring piece; and (8) the ring piece roundness error ei corresponding to the current rolling time of the ring piece is output. According to the method, the relation between the bending degree of the ring piece and the bending moment, the rolling force and the size of the ring piece is analyzed, the radial and axial feeding strategy is adjusted according to the calculation result, and therefore the bending degree and the roundness error of the ring piece are controlled, and the purpose of controlling the roundness error of the ring piece is achieved.

The invention discloses a fixing device for a bendable sample based on a terahertz spectrometer. The fixing device comprises: a first clamp assembly and a second clamp assembly. The first clamp assembly at least comprises a first fixing clamp. The second clamp assembly at least comprises a second fixing clamp. The first fixing clamp and the second fixing clamp are arranged as follows: respectivelyclamping the first end and the second end of the to-be-detected sample, and the first fixing clamp and the second fixing clamp move in a first horizontal direction to bend the to-be-detected sample.In addition, the invention further discloses a measuring system comprising a terahertz time-domain spectrometer and the fixing device, and a measuring method. The measuring method adopts a measuring system for measurement, comprising the following steps of: clamping and fixing the to-be-measured sample by the fixing device; adjusting the bending degree of the to-be-measured sample according to needs; and emitting a terahertz signal by the transmitting end of the terahertz time-domain spectrometer, receiving the terahertz signal penetrating the to-be-measured sample by the receiving end of theterahertz time-domain spectrometer, and analyzing.

The invention relates to the technical field of head and neck massage, and discloses a neurology head and neck massage nursing device which comprises a supporting base and two sets of supporting rods hinged to the left side and the right side of the supporting base, a pair of connecting rods is fixedly installed on the opposite faces of the two supporting rods on the same side, and adjusting mechanisms are arranged on the connecting rods; the adjusting mechanism comprises four sets of adjusting rods and two side edge nursing pillows fixedly connected with the adjusting rods, and the two side edge nursing pillows are symmetrically distributed along the center. According to the head and neck massage nursing device for the neurology department, when the head and neck massage nursing device is used, a supporting base is placed at a designated position, the length of an adjusting rod is adjusted by manually controlling the position of an extension rod in a base rod, and due to the fact that a side nursing pillow can deform, the bending degree of the side nursing pillow can be adjusted when the length of the upper adjusting rod and the length of the lower adjusting rod are controlled; therefore, the head and the neck of different sizes can be adapted, the use of different people can be met, and the effect of better fitting degree can be achieved.