641 results about "Mechanical design" patented technology

The invention relates to the technical field of manipulators, in particular to a feeding and discharging manipulator for mechanical design and manufacture, which comprises a base, a multi-shaft mechanical arm, a hydraulic tank, a guide frame, a sliding plate and the like, the multi-shaft mechanical arm is mounted at the top of the base, the hydraulic tank is connected to the execution end of the multi-shaft mechanical arm, and the guide frame is connected to the hydraulic tank; sliding plates are slidably connected to the front side, the rear side, the upper side and the lower side in the guide frame and slidably penetrate through the guide frame. The telescopic rod of the air cylinder extends to drive the four clamping jaws to move in the direction close to one another, the clamping jaws are closed, the clamping jaws can clamp a workpiece, and the clamping jaws can be independently controlled to be opened and closed, so that flexible adjustment can be conducted according to the shape and size of the workpiece, the workpiece is prevented from being damaged, and the working efficiency is improved. And multiple faces of the workpiece can be clamped at the same time, it is guaranteed that clamping force is evenly distributed, and clamping stability is improved.

An electrical propulsion system comprises an inverter, an electrical motor assembly, an assembly, and a rotor position sensor. The inverter comprises a printed circuit board assembly (PCBA). The electrical motor assembly comprises a stator and a rotor. The assembly is configured to rotate a propeller and comprises a moving component and a stationary component. The rotor position sensor comprises at least one sensor coupled to the PCBA, and a magnet located on the moving component. The at least one sensor is configured to detect a magnetic field of the magnet through the stationary component.

The invention provides construction waste and slag mixed crushing and powder brick making equipment, and relates to the field of construction waste resource utilization. The equipment takes an innovative crushing and brick making process as a core, and efficient conversion of construction waste and slag is realized through efficient mechanical design and an intelligent control system. The equipment mainly comprises the following key components: a collision seat and a rolling seat for preliminary crushing, a connecting rod and a rotating seat are arranged in the collision seat and the rolling seat, and the lower side wall is rotationally connected with a conical crushing roller; the internal output end of the supporting inner frame is fixedly connected with the rotating base, and the upper side wall of the supporting inner frame is connected with the rotating shaft and the throwing frame; a supporting inner cavity is formed in the adjusting sleeve on the outer side wall of the rolling base. Through multi-stage crushing and intelligent control, the problems that in the prior art, the crushing efficiency is low, particles are not uniform, and the automation degree is low are effectively solved, an efficient and environment-friendly solution is provided for resource utilization of construction waste and furnace slag, and industrial technical progress is promoted.

The invention discloses a precision clamp device for machining special-shaped workpieces in mechanical design, and relates to the technical field of mechanical manufacturing, the precision clamp device comprises a base main body, a reference bottom plate, a plurality of rotating shafts and corresponding elastic clamping blocks, the reference bottom plate is arranged on the base main body, and positioning slots are formed for the rotating shafts to be rotatably mounted; the rotating shafts can independently rotate and drive the elastic clamping blocks to deflect to adapt to the irregular surface of the special-shaped workpiece, the rotating shafts comprise rotating blocks matched with the inserting grooves and adjusting sliding grooves extending along the shaft length, and the rotating shafts are evenly distributed on the circumference of the reference bottom plate; an elastic clamping block is connected with a transmission screw and an adjusting nut, a linear sliding block is arranged to be matched with an adjusting sliding groove, a self-adaptive contact is arranged on the side, facing the clamping center, of the elastic clamping block, the contact is provided with an elastic protection contact end cover, and a stress sensing connecting rod and an elastic buffering spring are installed in the contact. A movable rod penetrates through the base body, one end of the movable rod is connected with a control handle, the other end of the movable rod is connected with a self-adaptive pressing plate, the movable rod is sleeved with a reset spring, the pressing plate is provided with a profiling abutting block, and the clamping stability is improved.

A bathroom lock structure is provided, which includes an outdoor handle and an indoor handle. The indoor handle is provided with a knob with a spiral groove, a deblocking button in the indoor handle can be slid to cause a column on the deblocking button to be clamped in the spiral groove, a safety rod located in a first square hole within in the knob is driven to rotate. A locking cam in a shielding cover on the outdoor handle is driven to rotate by a rotation of the safety rod, thereby achieving locking or unlocking function. This bathroom lock structure achieves reliable locking and unlocking functions through exquisite mechanical design, thereby improving flexibility and convenience of use. The state of the lock can be observed through a display hole on the outdoor handle, allowing a user to clearly understand a current state of the lock.

The utility model discloses an accessory, relates to the technical field of AVG forklifts, and aims to solve the problems that in the prior art, related clamping accessories or other machines are adopted by the AVG forklifts, the design is complex, a vehicle body is greatly influenced, the structural weight of the whole vehicle and the structure of the accessories are influenced, and meanwhile application scenes are easily limited. The AVG forklift body comprises a main support, two plug pins are fixedly connected to one side of the main support, first electromagnets are arranged on the upper surfaces of the two plug pins, second electromagnets are arranged at the ends, close to the main support, of the plug pins, and the first electromagnets and the second electromagnets are installed in a submerged mode; the AVG forklift body comprises a driving main machine, a traveling system used for traveling, a hydraulic system used for lifting and an electric power system used for supplying power are arranged in the driving main machine, a radar range finder is arranged below the driving main machine, and an anti-collision head is arranged at one end of each pin.

The invention discloses an AI processing method and system for long-term memory of mechanical design knowledge, and the method comprises the steps: carrying out the semantic analysis and feature extraction of heterogeneous knowledge, such as parameterization formulas, engineering charts, technological processes and design principles, in the field of mechanical design through a multi-agent collaborative learning system; and establishing a multi-dimensional modular knowledge base and context-based Prompt strategy coupling mechanism. The method solves the problems of low efficiency, insufficient analysis accuracy, limited innovation support capability and the like in the existing mechanical design knowledge processing technology, and particularly solves the technical problems of high calculation complexity, inaccuracy in reasoning, poor adaptability and the like when multiple types of design knowledge are processed. Through the implementation of the method, the processing efficiency of the design knowledge and the design automation level are remarkably improved, the technical threshold of a designer is reduced, the design period is shortened, efficient analysis, accurate matching and innovative application of the mechanical design knowledge are achieved, and powerful support is provided for intelligent development of mechanical design.

The invention provides a hydraulic closed-loop tilling depth control system based on multi-sensor fusion in order to solve the problems that traditional tilling depth control is low in precision, poor in stability and the like. The system collects data through an inclination angle sensor, a displacement sensor, a posture sensor and the like, and after fusion processing, a hydraulic cylinder drives a parallel four-bar mechanism to adjust the tilling depth of the subsoiler. The system has three innovations: firstly, a dynamic model is constructed by using multi-source sensor cooperation and sliding mode variable structure control, the anti-interference capability is improved by combining a control strategy, and accurate tilling depth control is dynamically realized according to soil conditions; 2, a parallel four-bar mechanism is mechanically designed to be combined with hydraulic drive, terrain interference is eliminated by utilizing mechanism characteristics, and the control precision and unbalance loading resistance are enhanced; and thirdly, a bidirectional hydraulic lock and a manual-electric dual-mode oil way are adopted for hydraulic pressure, so that reliable tilling depth control and continuous operation are guaranteed. The three innovations are fused, and a high-precision, strong-stability and ultra-reliable tilling depth control solution is provided for saline-alkali soil agriculture.

The invention relates to a lithium battery mower with an automatic obstacle crossing structure and an obstacle crossing method thereof.The lithium battery mower comprises a fixed rack, the fixed rack is provided with a crawler device used for driving the fixed rack to move forwards, the front end of the fixed rack is provided with a movable rack, and the movable rack is rotationally provided with a first universal wheel; a cutting mechanism used for mowing is arranged on the movable rack, side supports are arranged on the two sides of the fixed rack respectively, and second universal wheels are arranged below the side supports; a guide rail is arranged on the side support, an adjusting sliding block fixed to the movable rack is arranged on the guide rail in a sliding mode, a driving shaft is rotationally arranged on the fixed rack, and the driving shaft is matched with the adjusting sliding block through a first linkage structure. When the mowing machine encounters an obstacle, the front end of the fixed rack and the cutting knife can automatically adjust the posture to be lifted up, stable obstacle crossing is achieved, and the problem that an existing mowing machine cannot actively cross the obstacle, and consequently the working efficiency is low is solved.

The invention relates to the field of ship deck mechanical design, and discloses a lightweight design method of an anchor and mooring equipment winding drum device, which comprises the following steps: S1, establishing a finite element model: establishing an initial three-dimensional model of the anchor and mooring equipment winding drum device, and carrying out regional division on the initial three-dimensional model to obtain a design domain and a non-design domain, applying a preset load condition and a boundary condition to the initial three-dimensional model so as to establish a finite element model; and S2, generating a conceptual configuration: based on the finite element model, carrying out topological optimization in the design domain to generate a material space distribution scheme representing an optimal force transmission path, and the scheme is the conceptual configuration. According to the method, the innovative structural configuration representing the optimal force transmission path is generated through the topological optimization technology, and the limitation of a traditional design method on structural innovation and optimization efficiency is systematically solved in combination with a parameterized multi-objective optimization process.

The external thread grinding machine comprises a machine body, a workpiece main shaft, a center frame and a grinding wheel main shaft, a Z-direction sliding plate and an X-direction sliding plate are arranged on the upper end face of the machine body, the workpiece main shaft is installed on the Z-direction sliding plate, and the center frame is installed on the Z-direction sliding plate and used for supporting the outer circle of a workpiece. The grinding wheel spindle is arranged on the X-direction sliding plate, the outer circle of one end of a workpiece can be clamped through the workpiece spindle, then the outer circle of the workpiece is supported by adjusting the center frame, grinding operation of external threads is completed, grinding of a center hole and jacking of a tailstock are not needed, the technological process is optimized, the machining cost is reduced, and the machining efficiency is improved. The invention belongs to the technical field of mechanical design.

The invention relates to a negative pressure quantitative adjustment and fine adjustment system for vacuum sizing of a drip tape production line, and belongs to the field of mechano-electronics. By adopting a mode of combining a mechanical design technology, a microelectronic technology, a communication technology, a pneumatic technology and the like, quantitative adjustment and fine adjustment of the vacuum degree in the vacuum sizing box are realized through independent work or matched and combined work of the air inlet nozzles with different calibers; and the combination mode of the air inlet nozzles stored in the EEPROM storage chip is called according to the production requirements of different pipe diameters and wall thicknesses, so that the production efficiency is effectively improved, and the purposes of accurately determining the diameter and the pipe wall thickness of the drip irrigation belt production line are achieved. The whole system has the advantages of high precision, low cost, convenience in use, high efficiency and the like, and has a wide market prospect.

The utility model relates to a special oil pumping device for a barreled oil drum, and aims to solve the problems of low efficiency, more oil residues, poor cleanliness, poor adaptability and the like in a traditional oil pumping mode. According to the device, efficient and clean extraction of oil at the bottom of the oil drum is achieved through precise mechanical design and the synergistic effect of parts. Specifically, the device comprises an oil suction pipe, a positioning oil suction disc seat, a spring, a pressure adjusting sleeve, an oil suction pipe positioning plate, a flat-head silencer and the like. The spring and the pressure adjusting sleeve ensure that the positioning oil suction disc seat is tightly attached to the bottom of the oil barrel, and thorough oil pumping is achieved. The filter screen filters impurities to protect the purity of the oil product; the flat-head silencer realizes air communication and prevents external pollution; the oil suction pipe positioning plate adjusts the position according to the size of the oil drum to ensure that the oil suction pipe clings to the inner wall. The oil pumping device has the advantages that oil pumping efficiency and thoroughness are improved, oil purity is protected, applicability and flexibility of the device are enhanced, cleaning cost and environmental pollution are reduced, and the like.

The invention discloses a supporting structure for reducing the degree of freedom of an electromechanical transmission output shaft and an output gear, which belongs to the technical field of mechanical design and comprises a cylindrical pin, the output shaft, a flange plate, the output gear and a bearing. The flange plate is mounted on the box body; the flange plate is supported on the output gear through a bearing; one end of the output shaft is coaxially sleeved in an axial blind hole A in the output gear; the output gear and the output shaft are coaxially connected through a cylindrical pin; one end of the cylindrical pin is in transition fit with an axial blind hole B in the output gear, and the other end of the cylindrical pin is in transition fit with an axial blind hole C in the output shaft. According to the invention, the cylindrical pin is utilized to restrain the redundant degrees of freedom of the output gear and the output shaft in the axial direction and the radial direction, and the coaxiality between the output shaft and the output gear is improved, so that the assembly error is reduced, the dynamic load is reduced, and the overall performance and reliability of an electromechanical transmission system are improved.

The invention belongs to the technical field of mechanical design, and particularly relates to a method and device for optimizing structural parameters of a sliding shoe bearing oil cavity of a mill. The method comprises the steps that firstly, the influence degree of each to-be-optimized oil cavity structure parameter of the mill sliding shoe bearing on the oil film bearing characteristic is analyzed, and all the oil cavity structure parameters are divided into two types according to the influence degree, namely driving change parameters and driven change parameters; then establishing a regression model between the oil film bearing characteristic parameters and the active change parameters and a regression model between the driven change parameters and the active change parameters; and finally, solving to obtain optimal oil cavity structure parameters by combining all the established regression models with the goal that the oil film bearing characteristic parameters meet the requirements. The regression model established by the invention can reflect the mutual influence relationship among the oil cavity structure parameters, and the influence relationship is considered to optimize the oil cavity structure parameters, so that the optimization performance of the oil cavity structure parameters is improved.

A connecting rod-synchronized mechanical gripper, pertaining to the field of mechanical design. The mechanical gripper comprises a power source outputting power in the form of linear motion, the power source being rotatably disposed; and comprises a first gripper finger (4) and a second gripper finger (3) which are oppositely arranged, the first gripper finger and the second gripper finger both being rotatably disposed, and the first gripper finger and the second gripper finger being connected to one another by means of a transmission rod (8). The power source drives the first gripper finger to rotate, such that under the driving of the transmission rod, the first gripper finger and the second gripper finger are synchronously spread out or synchronously carry out gripping. The connecting rod-synchronized mechanical gripper can achieve synchronous gripping and loosening of the gripper fingers on both sides, which greatly reduces the space of motion required for gripping a drill pipe by the mechanical gripper, and facilitates optimization of the structure of the mechanical gripper and related components. Meanwhile, the synchronized motion of the gripper fingers on both sides effectively avoids position deviation of the drill pipe when being gripped, which better ensures the accuracy in delivery of the drill pipe.

The invention provides a hydraulic system structure capable of detecting internal leakage of an isolating valve and an internal leakage detection method, relates to the technical field of mechanical design of hydraulic systems, and solves the limitation problem that an existing detection mode is time-consuming and labor-consuming. The hydraulic system structure is sequentially connected with an isolating valve, a main distributing system oil source pipeline and a main distributing valve from a pressure oil tank; the main distributing valve is connected with a first servomotor and a second servomotor, the first servomotor and the second servomotor are both connected to the control ring, and the main distributing valve is further connected to the oil collecting tank through a cavity closing oil return pipeline. The isolating valve is further connected with a control valve, the control valve is provided with an oil supply port P, an oil return port T, a first working port A and a second working port B, the oil return port T is connected to the oil collecting groove through an oil discharge main pipeline, the first working port A is communicated with a closed piston cavity of the isolating valve, and the second working port B is communicated with an open piston cavity of the isolating valve; whether the isolating valve has an inner leakage fault or not can be quickly and conveniently determined by detecting whether the oil discharge main pipeline leaks oil or not.

The invention discloses a cylindrical material conveying device based on a horizontal linear motor, and belongs to the field of mechanical design and manufacture, the device comprises a magnetic flux switching linear motor, a stator supporting device, a material supporting device, a material pushing device and a sensor device, and the magnetic flux switching linear motor is a driving source and is of a horizontal bilateral structure; the reinforcing ribs in the stator supporting structure adopt a dual-function coupling design, so that the cost can be reduced and the efficiency can be improved; the material supporting device is fixedly connected with the stator supporting structure and is in linear contact with the cylindrical material; the pushing device is fixedly connected with the linear motor rotor and is connected with the stator supporting structure through a linear guide rail sliding block; the sensor device is located on one side of the linear motor, and a signal line is of a spring coil structure. The rotor is simple in structure, easy to maintain, good in natural heat dissipation effect, compact in overall structure and high in space utilization rate, and the problems that an existing same-type cylindrical material conveying device is complex in rotor structure, poor in natural heat dissipation effect and low in overall structure space utilization rate are solved.

The invention relates to a batch automatic design method and system for turbine end wall modeling, belongs to the technical field of turbine mechanical design, and provides non-axisymmetric end wall modeling design for an axial flow turbine by taking a trigonometric function and a Bezier curve as axial modeling functions and taking a sine function as a circumferential modeling function. Meanwhile, the non-axisymmetric end wall curved surface is accurately drawn through programming, and a point cloud file of the three-dimensional curved surface is generated. And then the point cloud file is imported into three-dimensional modeling software for three-dimensional curved surface modeling, and automatic batch design of the non-axisymmetric end walls of the axial flow turbine is achieved. The end wall near the pressure surface is convex, and the end wall near the suction surface is concave, so that the airflow of the end wall near the pressure surface is accelerated to flow, the static pressure is reduced, the airflow of the end wall near the suction surface is decelerated, the static pressure is increased, and the non-uniformity of circumferential distribution of the static pressure in the end area is reduced; flow separation among the blades is effectively improved, vortex shedding is reduced, pressure loss is reduced, and turbine performance and efficiency are improved.

The utility model discloses a suction spout head and household suction equipment that conforms to ergonomic design. The suction spout head includes a water spray nozzle, a spout head body, a water supply pipe, a water suction pipe, and a handle connector; a first mounting portion, a second mounting portion, and a hand-held portion are arranged inside the handle connector; the first mounting portion is located at the lower portion of the second mounting portion, and the hand-held portion is formed by extending outward from the middle portion of the second mounting portion and is in an arc shape; the first mounting portion, the second mounting portion, and the hand-held portion are integrally formed; the water supply pipe is connected to the water spray nozzle, and the water suction pipe is connected to the spout head body, and the water supply pipe and the water suction pipe are respectively mounted on the first mounting portion and the second mounting portion of the handle connector. The present application replaces the simple clamp assembly in the prior art by adding a handle connector, so that the handle connector has both the function of firmly mounting the water supply pipe and the suction pipe and the function of an external handle that conforms to ergonomic design.

The invention discloses a multi-software combined special-shaped superconducting coil structure design method, and aims to optimize a modeling mode of a special-shaped superconducting coil and improve modeling efficiency on the premise of ensuring result precision. According to the method, for a three-dimensional special-shaped complex superconducting magnet structure, a platform is built based on a Python language, and a multi-software combined geometric modeling system is built by combining mechanical design software SolidWorks, finite element software Abaqus and electromagnetic analysis software Opa-3d. The method comprises the following steps: firstly, establishing a geometric model through SolidWorks software, and outputting the geometric model in a general file format; and then, importing the geometric file into Abaqus to carry out automatic unit division. Geometric model data files of the divided units are obtained through calculation, geometric coordinates of unit nodes are read in sequence, the geometric coordinates are arranged into coil geometric data files which can be recognized by Opera-3d, and finally geometric modeling is completed in Opera-3d. According to the method, the blank that the coil in Opera-3d cannot be directly imported through mechanical design software is filled up, and the geometric modeling mode of the coil in the software is enriched.

The invention concerns a toothbrush comprising a brushing roller (4), a drive shaft with a first end secured to said brushing roller (4), said toothbrush comprising a first casing (30) within which runs said drive shaft, as well as a cover (8), made of a first material, having an internal face facing said roller (4), said drive shaft comprising an extremal segment emerging from said first casing (30) and including said first end, said brush comprising a bearing receiving said extremal segment, said toothbrush comprising a protective piece (9) made of a second material softer than said first material, said protective piece (9) cladding said internal face and projecting from the latter to form a lip (90), said protective piece (9) forming said bearing.Oral hygiene instruments.

The utility model discloses an adjusting platform spherical hinge locking structure, and belongs to the technical field of mechanical design, the adjusting platform spherical hinge locking structure comprises an adjusting platform, a spherical hinge posture adjusting and fixing structure, an oil way assembly and a control module, the spherical hinge posture adjusting and fixing structure comprises a spherical hinge, an oil cylinder and a universal link head, and after the adjusting platform completes platform posture adjustment through the spherical hinge, the oil way assembly is fixed to the adjusting platform; the control module controls the oil way assembly, then the multiple sets of oil cylinders around the spherical hinge are controlled to be stretched under the condition that the torque is not changed, it is guaranteed that the multiple oil cylinders reach the designated stretching positions at the same time, locking of the spherical hinge is completed, the complete locking state of the spherical hinge can be achieved, one or more spherical hinges can be locked in any posture, and the locking effect is good. Under the condition that a plurality of spherical hinge supports are locked, the posture of the spherical hinge supports is not changed at will, the locking state is stable, and the posture of the spherical hinge supports cannot be changed under the condition of external force.

The invention belongs to the field of mechanical design, and relates to a rotary blowout preventer for a coal mine drilling machine. The core structure comprises a transition four-way joint which is provided with a deflation valve and a water drain valve which are respectively used for discharging gas and drilling slag and water; the rotary sealing device comprises a shell, a front end cover, a rear end cover, a rotary inner sleeve and a sealing rubber sleeve, the sealing rubber sleeve is in an inverted cone shape, self-sealing is achieved through the pressure of media returning out of a hole, and the holding force on the drill rod is enhanced. In addition, the device is further provided with an axial limiting structure, various sealing pieces, a nylon supporting ring, a lubricating nipple and other auxiliary components. In some embodiments, an auxiliary sealing ring is additionally arranged on the inner side of the large end of the sealing rubber sleeve, and double-sealing guarantee is formed. The device can effectively solve the problems that an existing coal mine drilling gas leakage-proof device is rapid in sealing abrasion, poor in high-pressure sealing performance and the like, and safe production of a coal mine is guaranteed.

The utility model belongs to the technical field of machining, and particularly relates to a portable stamping device for mechanical design and manufacturing, which comprises a frame. Positioning boxes are fixedly connected to the two ends of the rack correspondingly, guide rods are arranged at the front ends and the rear ends of inner cavities of the positioning boxes correspondingly, fixing frames are movably connected to the surfaces of the guide rods through guide sleeves, molds are fixedly connected to the opposite ends of the two fixing frames, and a collecting assembly is movably connected to the lower surfaces of the molds. The surface of the guide rod is sleeved with a spring, the opposite ends of the two springs are both fixedly connected with the fixing frame, and the opposite ends of the two springs are both fixedly connected with an inner cavity of the positioning box. And by means of matched use of structures such as springs, the effect that when different materials need to be punched, the die can be conveniently and rapidly replaced is achieved.

The invention discloses a mechanical arm for mechanical design and manufacturing, and relates to the technical field of mechanical design. The device comprises a driving air cylinder, an output shaft of the driving air cylinder is connected with a moving frame, a connecting plate is arranged in the moving frame and rotationally provided with one end of a first connecting rod, the other end of the first connecting rod is slidably connected into a first sliding groove, a groove is formed in the first sliding groove, and the groove is clamped with one end of the first connecting rod; the first sliding groove is formed in a first sliding block, and the first sliding block is fixedly provided with one end of a second connecting rod. The moving frame and the internal moving mechanism can make accurate contact with an object through pushing of the driving air cylinder, the moving mechanism is automatically adjusted after being abutted against the object, the mechanical arm rotates towards the inner side to conduct tight clamping, and in the process, clamping stability is guaranteed through clamping connection of the first connecting rod and the groove and deformation of the reset spring, and when the object needs to be released, the air cylinder is started; the mechanical arm rotates outwards through the counter-acting force of the spring, and objects are released easily.

The invention discloses an integrated parallel five-finger dexterous manipulator with fifteen degrees of freedom, and belongs to the field of mechanical design and manufacturing. The dexterous manipulator is composed of a palm module, a base and three-degree-of-freedom fingers, wherein the palm module is mounted at the top of the base; a fixed mounting through hole used for being connected with an external mechanical arm is designed in the bottom of the base; the three-degree-of-freedom fingers are integrally mounted on the palm module, each finger has three active degrees of freedom, and 15-degree-of-freedom operation and movement of the dexterous manipulator are achieved by controlling cooperation of the five fingers; rotation of a motor at the palm part is converted into bending motion of all joints of the five fingers through a compact parallel connection link mechanism, all drivers are integrated at the palm part, and flexible operation of the manipulator with fifteen active degrees of freedom can be achieved under the condition that an additional driving device is not needed. The technical problem that the size and the multi-control freedom degree of an existing dexterous manipulator driver are difficult to consider at the same time is solved.

A mobility impaired rehabilitation wheelchair having both a manual mode of operation and a motorized mode of operation for use by a wheelchair occupant in providing efficient and reliable leg exercising for improving circulation and providing muscular stimulation. The mobility impaired rehabilitation wheelchair has an electrical motor and shaft movement that is compact in nature for enabling the motorized mode of operation and the mechanical design provides the wheelchair occupant with a leaver to control movement and the ability to disconnect motion in the manual mode of operation.

The invention discloses a fabric detection device, and belongs to the technical field of fabric performance detection.The fabric detection device comprises a supporting seat, a detection control cabinet is fixedly connected to the side face of the supporting seat, a supporting guide mechanism is fixedly connected to the supporting seat, and two guide blocks are slidably connected into the supporting guide mechanism; and an upper rubbing plate is fixedly connected below the guide block on the upper side. According to the cloth rubbing device, the upper rubbing plate, the lower rubbing plate, the contact plate, the clamping plate and the first elastic assembly are adopted, when the upper rubbing plate and the lower rubbing plate are far away from the middle plate, cloth is automatically clamped and limited, and when the distance between the upper rubbing plate and the middle plate and the distance between the lower rubbing plate and the middle plate are minimum, clamping and limiting are automatically relieved, so that rubbing treatment of the cloth is more sufficient and comprehensive; the fabric detection device provided by the invention not only improves the comprehensiveness and accuracy of the detection of the crease resistance of the fabric, but also remarkably improves the detection efficiency and reliability through the innovative mechanical design and the automatic operation process of the fabric detection device.

The utility model belongs to the technical field of mechanical design, and particularly relates to a helicopter pedal angle sensor mounting device which comprises a mounting seat and a bushing. The mounting seat comprises a base and a boss; the base is plate-shaped, a center hole is formed in the middle of the base, and the boss is located on the edge of one side of the base. The bushing is mounted at an axis hole of the pedal mounting shaft; a rotating shaft of the angle sensor penetrates through a central hole of the mounting seat base and then is connected with the lining; the mounting seat boss is fixed on the side surface of the pedal; and the angle sensor flange is fixed on the boss-free side of the mounting seat base.