350results about How to "No rotation" patented technology

For the problem of staring from a satellite to a ground point, the invention provides a satellite attitude control method for ground point staring imaging. The method includes the steps: calculating an expected staring Euler angle and an expected angular velocity on the basis of a given satellite track state and a given ground point space coordinate, calculating the margin of error between an actual angular velocity and the expected angular velocity, then calculating the value of deviation between an optical axis and a ground point direction on the basis of an actual attitude, selecting a control law parameter, and finally calculating the controlled variable of the moment of a flywheel. In terms of applications, the attitude angle and the angular velocity of a satellite are measured and obtained by an attitude determination system. The controlled variable calculated by the method is transmitted to an executing mechanism, and then a ground point staring attitude control function is achieved. According to the method, a yaw angle can keep being zero, so an image will not rotate within the field of view of a camera, and the image is convenient to observe and analyze. The algorithm of the method is simple, the computation is easy, and the method is easy to achieve in terms of engineering. Moreover, the method exhibits high directional control precision and good directional stability.

The invention discloses a universal tooling fixture for shaft parts, which comprises a base fixed on a workbench, a clamping mechanism, an adjusting mechanism and an angle adjusting mechanism. Using the general tooling and fixture for shaft parts described in the present invention, an angle adjustment mechanism is set to realize the placement of shaft parts at any angle and all-round rotation, and the adjustment mechanism is set to adjust different shaft diameters and different lengths. As well as adjusting the clamping position of shaft parts with various shaft diameters on the same shaft, a clamping mechanism with adjustment parts is set up to clamp shaft parts. This device makes shaft parts more accurate during processing, testing and assembly. Efficient and convenient, especially for fast switching when clamping different positions of different shaft parts, which brings great convenience, and can effectively solve the problem of single specification of clamping parts, inflexible placement and troublesome operation of existing shaft parts tooling fixtures, etc. Problem, the device is simple in structure, easy to use, low in cost, and easy to popularize.

The invention belongs to the field of geotechnical engineering, and in particular relates to a compression-shear testing apparatus for a rock in a dry-wet cyclic process. The apparatus comprises an angle-variable compression-shear unit, and a compression machine for vertically applying load onto the angle-variable compression-shear unit; the apparatus also comprises a reservoir, water injection equipment for carrying out moisture saturation treatment on a rock sample in the angle-variable compression-shear unit, and heating equipment for carrying out hot-gas drying treatment on the rock sample in the angle-variable compression-shear unit. The angle-variable compression-shear unit is located in the reservoir, and the reservoir is communicated with the water injection equipment and the heating equipment. By adopting the compression-shear testing apparatus, the integration of rock sample dry-wet cyclic treatment and a shear test is realized, and the apparatus has the advantages of simple structure, convenient operation, low cost, wide application range and long service life; the rock samples in different states after different dry-wet cyclic times can be accurately simulated, shear test research is carried out on the rock samples, and moreover, failure load and displacement of the rock samples in the vertical direction in the shear test process can be recorded in real time.

The invention discloses a testing device and method for measuring the sandy soil moving states under different liquefaction degrees. The device comprises a model box, a working bench, a support, a speed regulating electromotor and a PIV (peak inverse voltage) platform, wherein the model box is internally provided with pulley blocks and steel wire ropes; the PIV platform is installed on one side out of a panel pasted with a transparent scale grid paper, and consists of two parts including a CCD (charged coupled device) digital camera and a camera support. A using method of the device comprises the following steps of: simulating liquefied sandy soil with different liquefaction degrees by adopting plastic sands with different gradations and a sodium chloride solution with specific density; dragging a carbon wire by the speed regulating electromotor; driving semi-spherical-body slide blocks to move horizontally by the pulley blocks; installing a pull force sensor at the vertical moving section; and measuring the moving state of plastic sand particles around during the moving process of the semi-spherical-body slide blocks by utilizing the PIV platform and the pull force sensor. The testing device and method for measuring the sandy soil moving states under different liquefaction degrees have the advantages that the liquefied sandy soil can be simulated under different pore pressure ratios according to actual requirements; the measurement accuracy is high; the operation is simple and feasible and the like.

A casting defect repairing method is characterized by comprising the following steps of drilling or tapping a threaded bottom hole capable of covering a defect of a casting according to the size of the defect of the casting, boring a pin hole in the upper portion of the threaded bottom hole of the casting, polishing the bottom of the casting and conducting chamfering by 45 degrees by a bench worker, manufacturing a plug in interference fit with the casting, placing the plug in liquid nitrogen to be cooled for at least half an hour, plugging the plug into the casting to be in interference fit with the casting after the plug is cooled, welding the bottom of the casting and the lower end of the bottom of the plug through a welding rod, knocking out puffy surfaces on the surface of the casting after welding of each layer is finished, detecting whether cracks exist or not, continuing to weld the next layer if no crack exists, stopping welding until the welding area is 3-5 mm higher than the bottom of the casting, and polishing protruding portions of the top end of the pin hole of the casting and the bottom of the casting by the bench worker. The casting defect repairing method has the beneficial effects of guaranteeing the quality and shape of a sand core, solving the problem that complex sand cores are difficult to produce, simplifying manual operation and improving working efficiency.

The invention discloses a filling machine which comprises a rack, a storage hopper, a rotary table and a discharging mechanism. A supporting stand column is arranged on the rack and is connected with a mounting frame, the rotary table is connected with a rotary table driving mechanism, the storage hopper is arranged above the rotary table and corresponds to multiple measuring cups arranged on the rotary table, a fixed disc is arranged below the rotary table, a discharging port is formed in the fixed disc, a material hitting mechanism is arranged on the mounting frame, the discharging mechanism is arranged bellow the discharging port correspondingly, the supporting stand column is sleeved with a sliding sleeve, the mounting frame is fixedly connected to the sliding sleeve, the sliding sleeve is connected with the supporting stand column through a locking device, a driving air cylinder is arranged above the supporting stand column, a piston rod of the driving air cylinder is connected with the supporting stand column, and a shell of the driving air cylinder is connected with the sliding sleeve. The filling machine is convenient to clean and maintain, quick to mount and accurate in positioning, and measuring of the measuring cups cannot be influenced after the rotary table is lifted up partially and then mounted.

The invention discloses a plate veneering processing device, and belongs to the field of plate processing mechanical equipment. A feeding mechanism, a skin covering mechanism and a surface pressing mechanism are horizontally and fixedly arranged on the upper side of a fixing base in sequence in the horizontal direction. A lifting mechanism is vertically arranged in the middle of the upper side ofa horizontal-moving guide plate, and a plate adsorbing mechanism is horizontally arranged on the lower side of the lifting mechanism. A plurality of plate bearing rotating rollers are horizontally androtationally connected to a plate bearing support sequentially in the horizontal direction. A skin pulling mechanism is horizontally arranged on the positions, on one sides of the multiple plate bearing rotating rollers, on the plate bearing support, and a surface pressing support is vertically arranged on the position, on one side of the skin covering mechanism, on the fixing base. A plate bearing platform is horizontally and fixedly arranged in the middle of the surface pressing support, and a hot pressing support is horizontally located on the upper side of the plate bearing platform. Theplate veneering processing device is reasonable in structural design, plates can be horizontally moved and fed accurately block by block, the plates can be automatically subjected to skin covering processing, efficient and stable veneering processing for the plates is achieved, and thus needs for processing and using are met.

The invention relates to cervical disc prosthesis, an implantable device, a cervical disc prosthesis and implantable device combination device and a method of implanting a cervical implant to cervical vertebra. The combination device comprises the cervical disc prosthesis and the implantable device, wherein the cervical disc prosthesis is composed of an upper endplate, nucleus pulposus and a lower endplate, the upper endplate and the nucleus pulposus form a ball and socket joint, and the nucleus pulposus and the lower endplate are in interference fit to form a cylinder fitting structure; the implantable device is composed of a clamping rod, a sleeve, a rotation handle and a stop pin, the clamping rod is sleeved inside the sleeve in an empty mode, the stop pin prevents relative rotation between the clamping rod and the sleeve, the rotation handle in rotation bolted connection onto the tail end of the clamping rod promotes relative axial movement generated between the clamping rod and the sleeve whose tail end is embedded inside the rotation handle fitting groove, the sleeve squeezes the clamping head of the clamping rod in the case of axial movement of the clamping rod, and relaxation and clamping of the prosthesis are realized through opening and closing of the clamping head.

The invention discloses a turning clamp. The turning clamp comprises a clamp body, a locating block, a pressing mechanism and a safety screw, wherein the clamp body is provided with a hollow cavity, one end of the clamp body is fixedly connected with a flange plate, and the flange plate is used for being fixedly connected with a machine tool; the locating block is fixed into the cavity of the clamp body through a pin, a certain angle is formed between the locating block and the central axis of the clamp body, the locating block is provided with a locating and supporting surface which is matched with the outline of a workpiece to be machined, and after the workpiece is fixed into the locating and supporting surface, the central axis of a round-ring-shaped machined factor on the workpiece and a spindle of the machine tool coincide; the pressing mechanism comprises a first-direction pressing mechanism body and a second-direction pressing mechanism body, and the first-direction pressing mechanism body and the second-direction pressing mechanism body are used for locking the workpiece in the first direction and the second direction; the safety screw penetrates through the cavity of the clamp body and is fixed to the two opposite side faces, and the safety screw is used for preventing the workpiece in the cavity from disengaging and flying out. The invention further discloses a method of the turning clamp. By the adoption of the turning clamp and the method of the turning clamp, turning of the round-ring-shaped machined factor with the inclined central axis can be achieved, and the problems that at present, the structures of machined workpieces are limited, the clamping stability is poor, and potential safety hazards exist are solved.

The invention discloses an advertisement cleaning machine, and relates to the technical field of cleaning equipment manufacturing. The advertisement cleaning machine comprises multiple installation plates hinged sequentially, wherein the first installation plate and the tail installation plate are hinged through a detachable hinge for enclosing; a roll brush driven by a first motor is arranged oneach installation plate and is arranged on a vertical shaft; first elastic shafts driven by servo motors are arranged at two ends, close to the vertical shafts, on least two installation plates; driving wheels driven by second motors are arranged at one ends of the first elastic shafts; driven wheels arranged through second elastic shafts are arranged at two ends, close to two ends of the verticalshafts, of the other installation plates; a nozzle is arranged at one end of each installation plate; and the nozzles are sequentially connected with an annular water collecting device through a water pump and a filter. Compared with the prior art, the advertisement cleaning machine provided by the invention can solve the problem that small advertisements on the surface of an existing cylindricalrod piece are hard to clear.

The invention discloses a convenient-to-position wood floor cutting device, which comprises a cutting workbench, a positioning workbench, a first screw rod, a slide rod, a first motor, a second motor,a fixed retaining plate, a measuring plate, a right vertical plate, a movable clamping plate, an adjusting plate, an adjusting rod, a limiting plate and springs. The cutting workbench is placed longitudinally, the positioning workbench is placed transversely, the cutting workbench and the positioning workbench are fixedly connected to form a T-shaped structure, and supporting frames for supporting the cutting workbench and the positioning workbench are arranged below the same. The convenient-to-position wood floor cutting device is simple in structure, convenient to operate, high in cutting efficiency, smooth in cutting plane, capable of cutting wood floors in different sizes and completely independent of manual operation in a cutting process, and accordingly high quality of cut wood floors is guaranteed.

The invention discloses an analog semi-rigid underlying structure temperature shrinkage fracture testing method and a device. The device mainly consists of a bracket, a gripping head, a screw rod, positioning bolts and a force sensor, and the selected materials of an analog test piece are organic glass plate and rubber tire. The testing method comprises the following steps: fixing a test piece pasted with a strain disc on the device through the gripping head, then placing in a temperature control test box, and connecting the strain disc and a strain box through a conducting wire which penetrates through the test box; turning the positioning bolts to apply a tensile force to the test piece through the control of the force sensor, and realizing the purpose of applying the tensile force to the test piece; and while applying the tensile force to the test piece, ensuring that the test piece and the gripping head are in the same plane, and fixing the test piece through a fastening bolt and the screw rod, so as to ensure that the test piece does not generate torsion. The method provided by the invention can simulate the fracture condition generated by fracture of a semi-rigid underlying structure after the action of temperature and load, and provides an effective way for research of underlying structure indoor analog and the fracture condition under the condition of temperature variation; and the structure is simple, the operation is convenient and the effect is good.

The invention discloses a root key construction device for a root pouring pile. A hydraulic cylinder is fixed to the position above the center of a base plate. The end portion of a hydraulic rod of the hydraulic cylinder downwards stretches out towards the base plate. A plurality of vertical push rods are evenly distributed on the part, around the hydraulic cylinder, of the base plate. The hydraulic rod is connected with the vertical push rods through a connecting rod mechanism, the vertical push rods move in the radial direction of the base plate, the positions, corresponding to the vertical push rods, of the edge of the upper surface of the base plate are provided with root key limiting devices, and the root key axis points at the axis of the base plate through the root key limiting devices and moves in the radial direction of the base plate. The positions, corresponding to the root key limiting devices, of the bottom of the base plate are rotationally connected with transmission gears, the transmission gears are in transmission connection with respective drive motors, and the transmission gears are in engaged transmission with vertical racks at the tail ends of root keys inserted in the side wall of a pile pit. It can be known from the above structure, the root key construction device for the root pouring pile can construct all root keys on one layer at the same time, automatic ascending in the pile pit can be achieved without the aid of external force so that construction of all the root keys in the pile pit can be finished, and the root key construction efficiency is improved.

The invention discloses a construction platform for facilitating root key construction of a root type cast-in-place pile. The construction platform for facilitating the root key construction of the root type cast-in-place pile comprises a base plate; the positions, corresponding to root key limiting devices, of the bottom of the base plate are respectively and rotatably connected with transmission gears; the transmission gears are respectively in transmission connection with respective driving motor; the transmission gears are in engaged transmission with vertical gear racks at the tail ends of the root keys which are inserted into the side wall of a pile pit. From the above structure, the construction platform for facilitating the root key construction of the root type cast-in-place pile disclosed by the invention can climb in the pile pit automatically so as to complete the construction of all root keys in the pile pit without external force, so that the construction efficiency of the root keys is improved.

The invention provides a track-laying vehicle loading wheel load test device, which belongs to the field of the sensor and the test technology. The track-laying vehicle loading wheel load test device aims to solve the problems that the traditional test device can not realize the load measurement of a double-width rim loading wheel in the track-laying vehicle, and measurement is inaccurate caused by that an oriented rod is deviated. The track-laying vehicle loading wheel load test device comprises loading wheels, a multi-component sensor and a sliding ring locating system, wherein the multi-component sensor is arranged between two spokes of rims, the sliding ring locating system adopts a connecting rod system or a guide rail system so as to protect the oriented rod and a sliding ring from relative movement, and the measurement accuracy is guaranteed.

The invention discloses a secondary pressure plate for electric equipment and operation method thereof. The secondary pressure plate comprises a pressure plate main body, a clutch mechanism and a fixed shaft; the clutch mechanism comprises a first base and a second base which are all installed on the top surface of the pressure plate main body, wherein an electromagnet is installed on the first baes, and a stretching tongue is installed on the second base; one end surface of an iron core of the electromagnet is opposite to one end surface of the stretching tongue, the on and off of the electromagnet can implement the connection and separation of the stretching tongue and the iron core; the fixed shaft is installed on the bottom surface of the pressure plate main body; a first binding post and a second binding post are installed on the end surface of the free end of the fixed shaft, the first binding post is electrically connected with the iron core, and the second binding post is electrically connected with the stretching tongue. Through the adoption of the method disclosed by the invention, the blocking/deblocking efficiency of the secondary pressure plate is improved, and the tedious degree of the entire installation of the secondary pressure plate is reduced.

The invention provides a hot press device for high temperature adhesive curing. The hot press device comprises an end cover (1), bolts (2), a force rod (3), a base (4), a magnet (5), a high temperature rubber pad (7), an electric heating sheet (8), an electrode (9), a lead hole (10), a bearing (11), and a core shaft (12). The base (4) is of a cylindrical structure with an inverted U-shaped cross section; the upper bottom surface is provided with a through hole and the inner wall of the through hole is provided with a thread. The base (4) provides support, and the magnet (5), the high temperature rubber pad (7) and the electric heating sheet (8) are arranged in the base (4). The magnet (5) provides attracting force; the upper end of the magnet (5) is provided with an internal thread which is directly connected with a core shaft thread (12c) of the core shaft (12). The hot pressure device allows the temperature and the applied force to be adjusted, thereby meeting the conditions of multiple times of curing of a high temperature adhesive, and is simple in design, accurate in control and easy to operate.

Disclosed is a multi-connecting-rod independent suspension for a drive axle of a commercial vehicle. The multi-connecting-rod independent suspension for the drive axle of the commercial vehicle comprises an auxiliary vehicle frame assembly used for being connected with vehicle frame longitudinal beams, an upper longitudinal pulling rod assembly, an upper horizontal pulling rod assembly, a lower horizontal pulling rod assembly, a stable pulling rod assembly, an absorber spring assembly and a bearing base assembly. The auxiliary vehicle frame assembly mainly comprises an auxiliary vehicle frame with a structure of double longitudinal beams and double horizontal beams. The auxiliary vehicle frame comprises an auxiliary vehicle frame front horizontal beam, an auxiliary vehicle frame back horizontal beam and an auxiliary vehicle frame longitudinal beam. The upper longitudinal pulling rod assembly mainly comprises upper longitudinal pulling rods. The upper horizontal pulling rod assembly mainly comprises upper horizontal pulling rods. The lower horizontal pulling rod assembly mainly comprises lower front horizontal pulling rods and lower back horizontal pulling rods. The stable pulling rod assembly mainly comprises stable pulling rods and stable pulling rod connecting bosses. The absorber spring assembly mainly comprises absorbers and springs. The multi-connecting-rod independent suspension for the drive axle of the commercial vehicle has the enough bearing capacity, the comfort performance and stability of the vehicles are improved, the weight of the drive axle is greatly reduced, the fuel oil economy is improved, the space layout can met the electrification demands of the commercial vehicle, and geometric deformation of the suspension does not happen under the extreme load.