33results about How to "Meet adjustment requirements" patented technology

The invention discloses a slow light waveguide structure based on a photonic crystal air bridge structure, which adopts a line defect photonic crystal structure, and comprises a longitudinal structure and a horizontal structure, wherein, the longitudinal structure is an air bridge multi-layer structure which comprises an air layer, a semiconductor material layer, an air layer and a substrate material layer from the top layer to the bottom layer; the horizontal structure adopts a triangular lattice structure, the period is P, and the radius is R; and the waveguide is formed through removing a row of holes. Through changing the size of the line defect nearby hole, the slow light waveguide structure of the invention realizes a slow light working area reaching up to 50 nanometers; the central wavelength can be adjusted through the width of the waveguide, which can be realized only in need of the small holes with two types of apertures within the requirement range of hundreds of nanometers of operating wavelengths, thus lowering the requirement of device parameter adjustment in a certain technological condition. By utilizing the slow light photonic crystal waveguide of the slow optical waveguide structure based on the photonic crystal air bridge structure, the bandwidth can cover the C wave band of the fiber-optical communication, and can achieve 50nm.

The invention relates to a hydraulic four-jaw double-acting centering chuck. The hydraulic four-jaw double-acting centering chuck comprises a chuck body, clamping jaws, a sliding base, T-shaped blocks, a first wedge core sleeve and a second wedge core sleeve, wherein the sliding base is installed on the chuck body in a sliding mode, the clamping jaws are indirectly fixed to the sliding base through the T-shaped blocks, every two opposite clamping jaws in the four clamping jaws form one group in pairs, the first wedge core sleeve and the second wedge core sleeve are installed in the chuck body,a cylindrical cavity is formed in the chuck body, the first wedge core sleeve is matched with one group of clamping jaws in a wedge shape and then installed in the cylindrical cavity in a sliding mode, a square cavity is formed in the upper end of the first wedge core sleeve, the second wedge core sleeve is matched with the other group of clamping jaws in a wedge shape and then installed in the square cavity in a sliding mode, and a double-acting oil cylinder on the same side is mounted on a lathe, and independently pulls the first wedge core sleeve and the second wedge core sleeve to drive the two groups of clamping jaws in the opposite directions to move to clamp a square workpiece. The two groups of clamping jaws form a double-acting effect and conduct clamping from the side faces of abreaking hammer cylinder body correspondingly, the requirement for adjusting the positions of the clamping jaws by an operator is lowered, and meanwhile, the service life of the oil cylinder can be prolonged.

The invention relates to a system for adjusting an optical axis of a CCD stereo camera to the center in real time. The system for adjusting an optical axis of a CCD stereo camera to the center in real time which is provided by the invention comprises parallel light pipes (1), window glass (2), a stereo camera lens (3), a CCD (4) and a computer data collecting system (5), wherein the window glass (2), the stereo camera lens (3) and the CCD (4) are arranged on the optical axis of the parallel light pipes (1) in turn, and the computer data collecting system (5) is connected with the CCD (4). The invention provides the system for adjusting an optical axis of a CCD stereo camera to the center in real time with convenient adjustment, which can obtain the central deviation value in real time, for solving the technical problem in an existing CCD stereo camera that the real time adjustment of the optical axial with high precision to the center is difficult.

The invention discloses a bottom die trolley of a short-line matching prefabricated box girder. The bottom die trolley comprises an upper-layer support, a lower-layer support, an adjusting device, a jacking device and a walking device. The two supports are vertically stacked, and are small in size and low in center of gravity. The walking devices are connected to the bottoms of the two transversesides of the lower-layer support. Vertical limiting columns are connected to the middle positions of the front end and the rear end of the lower-layer bracket; the limiting column penetrates through the upper-layer support to enable the two supports to be vertically limited through a fastener, the adjusting device is a telescopic device arranged in the horizontal direction, one end of the adjusting device is hinged to a hinge base on the upper-layer support, the other end of the adjusting device is hinged to the limiting column and vertically limited, and the multiple jacking devices are vertically connected to the upper-layer support. Horizontal transverse movement of the upper-layer support relative to the lower-layer support and rotation of the upper-layer support around the limiting column on one side can be achieved through telescopic movement of the adjusting device, the jacking device is used for jacking the matching beam, the vertical height or inclination angle of the matchingbeam can be adjusted, longitudinal movement of the matching beam carried by the bottom die trolley is achieved through the walking device, and operation is easy.

The invention discloses a steel plate butt welding gap adjusting device, and belongs to steel plate position adjusting devices. The problem that according to an existing steel plate butt welding positioning device, the butt welding steel plate gap is difficult to precisely adjust is solved. The device comprises a base assembly, a fixing assembly, a transmission mechanism, a positioning mechanism and a gap indicating assembly; the base assembly comprises a bottom plate, a front guide rail and a rear guide rail; the fixing assembly comprises a left fixing plate, a right fixing plate, a left pressing plate and a right pressing plate; the transmission mechanism comprises a transmission shaft, a reverse shaft, a front screw and a rear screw; the positioning mechanism comprises a left camshaft, a right camshaft, a left long positioning sliding block, a right long positioning sliding block, a left short positioning sliding block, a right short positioning sliding block, a left pressing strip, a right pressing strip, a left shifting fork, a right shifting fork, a left driving rod, a right driving rod and a positioning pin; the gap indicating assembly is composed of a left pointer, a right pointer and a ruler; the device is simple in structure, low in manufacturing cost, small in work environment influence, easy and convenient to operate, capable of ensuring the steel plate butt welding gap and precise positioning and greatly improving the welding quality and the welding efficiency and suitable for multiple welding processes of lasers, electric arcs and the like.

The invention discloses a shield support for a steep medium-thickness coal seam, which comprises a lower landing leg and a support beam mutually articulated, wherein the support beam is arched; a free end of the support beam is further articulated with an upper landing leg; the lower landing leg and the upper landing leg are linear; first hydraulic cylinders are movably connected between the upper landing leg and the support beam and between the lower landing leg and the support beam respectively; the lower landing leg comprises a lower landing leg main body and a lower landing leg extension body; the upper end of the lower landing leg main body is articulated with the support beam; a sharp head is arranged at a free end of the lower landing leg extension body; a second hydraulic cylinder is movably connected between the lower landing leg main body and the lower landing leg extension body; the first hydraulic cylinder on the lower landing leg is articulated with the lower landing leg main body by the bottom end of a cylinder body of the first hydraulic cylinder; and the tail ends of piston rods of the two first hydraulic cylinders are articulated with the support beam respectively. The support has the benefits that the support is good in stability and safety and can be adjusted with changes in coal seam thickness and a dip angle, and a coal seam recovery ratio and a level of mechanization are high.

The invention relates to a generator, in particular to an adjustable voltage permanent-magnet generator, which comprises a main shaft, a rotor fixedly arranged on the main shaft, and stators arranged around the rotor. The rotor is fixedly arranged on the main shaft, a permanent magnet is fixedly arranged on the rotor, the stators are arranged on the main shaft through a bearing, the stators at least comprise a fixed stator and an adjustable stator on which a fixed stator coil and an adjustable stator coil are arranged respectively, phase lines of the fixed stator coil and the adjustable stator coil are correspondingly connected in series respectively, the fixed stator is fixedly connected with a generator bracket, the adjustable stator is connected to the generator bracket through a spring, and the adjustable stator is also provided with a deflection adjusting mechanism. The generator saves a rectification-inversion device in a parallel network of the permanent-magnet generator, has adjustable output voltage, lowers manufacturing cost greatly, and improves reliability of products.

The invention relates to a diagnostic bed device for ultrasonic inspection. The diagnostic bed device comprises a bottom plate, a middle plate, a bed board, a bedside plate, a leg device, a leg powerdevice, a bed body lifting device and a leg lifting device, wherein the lower part of the bed board is provided with four guide posts, the middle plate is provided with four fixing holes, the fixing holes are fixedly connected with lower parts of the guide posts, the middle of each guide post has a guiding hole, the bottom plate is provided with four bottom plate upright posts, the bottom plate upright posts are in slip connection with the guiding holes, the guiding holes slide on the bottom plate upright posts, the front side of the bed board is provided with bed board pin holes, the rear side of the bedside plate is provided with bedside plate pin holes, and pins penetrate through the bed board pin holes and the bedside plate pin holes so as to hinge the bed board and the bedside plate together.

The invention discloses a planetary reducer and a method for installing and adjusting a bevel gear of the planetary reducer, belonging to the technical field of mining production equipment. It includes a box body, a first transmission shaft assembly and a second transmission shaft assembly. The first transmission shaft assembly includes the first bevel gear pair, the first support and the first adjustment pad, the second transmission shaft assembly includes the second bevel gear pair, the second support and the second adjustment pad, and the first support is NU type cylindrical roller Sub-bearing, the second support is NJ type cylindrical roller bearing. The box body is integrally cast and formed, and has a box cover. An installation observation hole is opened on the box body, and the installation observation port is facing the contact area between the first bevel gear pair and the second bevel gear pair. Through the structural principle that the inner and outer rings of the NU-type cylindrical roller bearing and the NJ-type cylindrical roller bearing can be separated, the first transmission shaft assembly and the second transmission shaft assembly can produce a certain displacement in the axial direction, The efficient and precise adjustment of the first bevel gear pair and the second bevel gear pair is realized.

The invention discloses a multi-needle presser foot embroidery machine head and an embroidery machine, and belongs to the technical field of embroidery machines. The embroidery machine head comprises a machine shell, a needle rod driving shaft, a presser foot driving wheel, a presser foot mechanism, a presser foot transmission mechanism and a presser foot adjusting mechanism, wherein the presser foot mechanism comprises a presser foot strip, a presser feet and a presser foot lifting rod; the presser foot transmission mechanism is arranged between the presser foot driving wheel and the presser foot lifting rod and used for driving the presser foot mechanism to move up and down; and the presser foot adjusting mechanism is arranged on the machine shell and adjusts the vertical position of the presser foot mechanism through the presser foot transmission mechanism. The needle rod driving shaft drives the presser foot mechanism to move up and down through the presser foot driving wheel and the presser foot transmission mechanism, so that the presser foot mechanism can effectively press an upper thread when the embroidery machine works, and thus the embroidery quality is improved. The presser foot adjusting mechanism can adjust the vertical position of the presser foot mechanism through the presser foot transmission mechanism, the presser foot mechanism is convenient to lift, and thus the presser foot mechanism is prevented from interfering with embroidery cloth replacement and other operations.

The invention discloses a slow light waveguide structure based on a photonic crystal air bridge structure, which adopts a line defect photonic crystal structure, and comprises a longitudinal structure and a horizontal structure, wherein, the longitudinal structure is an air bridge multi-layer structure which comprises an air layer, a semiconductor material layer, an air layer and a substrate material layer from the top layer to the bottom layer; the horizontal structure adopts a triangular lattice structure, the period is P, and the radius is R; and the waveguide is formed through removing a row of holes. Through changing the size of the line defect nearby hole, the slow light waveguide structure of the invention realizes a slow light working area reaching up to 50 nanometers; the centralwavelength can be adjusted through the width of the waveguide, which can be realized only in need of the small holes with two types of apertures within the requirement range of hundreds of nanometersof operating wavelengths, thus lowering the requirement of device parameter adjustment in a certain technological condition. By utilizing the slow light photonic crystal waveguide of the slow opticalwaveguide structure based on the photonic crystal air bridge structure, the bandwidth can cover the C wave band of the fiber-optical communication, and can achieve 50nm.

The invention discloses a positioning tool of an aircraft wing box leading edge technological connector and belongs to the technical field of aircraft assembly. The positioning tool comprises a base unit, a support connected with the base unit and an intersection point positioning plate connected with the support. An adjusting unit is further arranged between the intersection point positioning plate and the support. The adjusting unit comprises a connecting plate, a first adjusting plate and a second adjusting plate. The connecting plate is connected with the support through a locking bolt, the first adjusting plate is rotatably connected with the connecting plate through a transverse rotary shaft, and the second adjusting plate is rotatably connected with the first adjusting plate through a longitudinal rotary shaft. Tapered bosses are evenly distributed on the second adjusting plate, tapered grooves matched with the tapered bosses are formed in the intersection point positioning plate, and the intersection point positioning plate penetrates through the second adjusting plate through a threaded positioning pin to be connected with the first adjusting plate. The intersection point positioning plate is provided with an interval spacer through the positioning pin. The positioning tool of the aircraft wing box leading edge technological connector is simple in structure and high in automatic degree.

The invention relates to a generator, in particular to an adjustable voltage permanent-magnet generator, which comprises a main shaft, a rotor fixedly arranged on the main shaft, and stators arranged around the rotor. The rotor is fixedly arranged on the main shaft, a permanent magnet is fixedly arranged on the rotor, the stators are arranged on the main shaft through a bearing, the stators at least comprise a fixed stator and an adjustable stator on which a fixed stator coil and an adjustable stator coil are arranged respectively, phase lines of the fixed stator coil and the adjustable stator coil are correspondingly connected in series respectively, the fixed stator is fixedly connected with a generator bracket, the adjustable stator is connected to the generator bracket through a spring, and the adjustable stator is also provided with a deflection adjusting mechanism. The generator saves a rectification-inversion device in a parallel network of the permanent-magnet generator, has adjustable output voltage, lowers manufacturing cost greatly, and improves reliability of products.

A position and angle adjustment device for T-shaped welding belongs to a welding position and angle adjustment device, which solves the problem that it is difficult to accurately adjust the welding position, angle and gap existing in the T-shaped welding positioning of the existing welding plate. The present invention includes a base assembly, a transmission mechanism, a fixing assembly, a positioning mechanism and an indicating assembly. The base assembly includes a bottom plate and a bottom support; Support, fixed plate, positioning plate support; positioning mechanism includes front and rear positioning plate, front and rear positioning slide plate, slide plate support, sliding screw rod, sliding screw rod support, driving rod, front and rear pressure rod, front and rear positioning bar ; The indication component includes a welding angle pointer, a welding angle scale, a positioning angle pointer, a positioning angle scale, a positioning displacement pointer, and a positioning displacement scale. The invention is simple and novel, easy to adjust and operate, less affected by the processing environment, can ensure the welding position, angle and gap positioning accuracy in the T-shaped welding of the welding plate, can improve the welding efficiency and quality, and is suitable for various welding methods such as laser welding.