39results about How to "Prevent mutual sliding" patented technology

The invention discloses an insulating shielding cover. The insulating shielding cover comprises an insulator shielding cover and a cross arm shielding cover; the insulator shielding cover comprises a shielding cover body; the two sides of the shielding cover body are provided with connecting arms opposite to each other; clamping plates connected with the shielding cover body are arranged at the lower ends of the connecting arms; fixed pressing plates are arranged on the outer side walls of the connecting arms; one side of the shielding cover body is a horizontal side wall; a place reservation hole is formed in the lower part of the horizontal side wall; one end of the cross arm shielding cover is connected with the horizontal side wall; and the cross arm shielding cover communicates with the insulator shielding cover through the place reservation hole. Not only is the tightness of shielding at the joint guaranteed, but also the repeated shielding of the joint is avoided; time and shielding tools are saved; and the working efficiency is improved.

The invention discloses a screw-type vertical elevator and a working method thereof, and relates to the technical field of transportation. The screw-type vertical elevator comprises a well, a lift carand a driving mechanism. The driving mechanism comprises a motor, a transmission rod and a plurality of screws. The multiple screws are vertically arranged on the periphery of the lift car, and eachscrew is provided with a nut in a sleeved mode. The nuts are connected to the lift car through first connecting pieces, and each screw is provided with a second gear. An output shaft of the motor is provided with a worm, a worm wheel engaged with the worm is arranged at the upper end of the transmission rod, and a first gear engaged with all the second gears is arranged at the lower end of the transmission rod. The screw-type vertical elevator has the beneficial effects that the lift car lifting action is achieved in a spiral transmission mode of the screws and the nuts, the certain self-locking function is achieved, labor is saved, and the falling accident is prevented from being caused on the lift car; the driving mechanism has the self-locking function through design of the worm and theworm wheel, and controllability and safety of the screw-type vertical elevator are ensured; and through design of the second gears and the first gear, synchronous rotation of the four screws can be ensured, and thus ascending and descending of the lift car are more stable.

The invention relates to the field of logistics, and particularly discloses a portable vehicle-mounted refrigerator for logistics. The portable vehicle-mounted refrigerator for logistics comprises anouter box body, a sealing cover, a hinge, an inner box body and ice boxes, wherein the bottom of the inner box body is arranged on a horizontal supporting plate; vertical connecting inserting plates are fixed on the left end and right end of the supporting plate; inserting grooves matched with the connecting inserting plates are formed in the positions, corresponding to the connecting inserting plates, on the outer walls of the inner box body; a horizontal sliding rail is fixedly mounted on the bottom of the supporting plate; two sliding seats which are symmetrical left and right are slidablymounted on the sliding rail; the two sliding seats are both connected with supporting connecting rods through rotating shafts; two sliding sleeves are respectively and rotatably connected with the ends of the two supporting connecting rods through second pin shafts; and supporting springs sleeving a supporting sliding rod are fixedly connected to the sliding sleeves. According to the portable vehicle-mounted refrigerator for logistics, the supporting springs play a role of supporting and buffering at the bottom of the inner box body, so that the vibration to the inner box body in the transportation process is reduced, and internal goods are protected.

The invention relates to a novel three point bending test device for a rock sample, which belongs to test equipment. The test device is formed by a base, supports, rolling shafts and adjusting bolts, wherein the supports of the test device are in a rectangular shape; rolling shaft positioning grooves are arranged above the supports; the adjusting bolts are located in guide holes of the base and are arranged in bolt holes in bosses of the supports in a rotating way; a space between the supports can be adjusted through rotating the adjusting bolts, and the offset of the supports can be avoided; and meanwhile, scale marks are marked on the surface of the base, so that the supports can be positioned according to the size of the rock sample. The rolling shafts of the supports are fixedly arranged in the rolling shaft positioning grooves of the supports through springs, so that friction between the rock sample and the supports can be reduced, mutual sliding of the rock sample and the rolling shafts is prevented, and the measured value is more accurate. According to the test device, the deformation and the conversion between signals in a traditional method are changed, the real-time monitoring on a three point bending test of the rock sample is realized, the intuitiveness is strong, the structure is reasonable, the operation is flexible and simple, the effect is good, and the disassembly is convenient.

The invention belongs to the technical field of wood-plastic plates and particularly discloses a fabricated composite wood-plastic plate. The fabricated composite wood-plastic plate comprises a firstplate body, a second plate body, a connecting block and a step groove; the first plate body is connected with the second plate body, and the connecting block is arranged at the position, correspondingto the second plate body, of one end of the first plate body; a first arc-shaped groove is formed in the position, corresponding to the connecting block, of one end of the first plate body; a slidingring is elastically connected to the connecting block, a connecting module is hinged to the outer side of the sliding ring, and a fast demounting module is arranged on the inner side of the connecting block; and a second arc-shaped groove is formed in the position, corresponding to the first arc-shaped groove, of one end of the second plate body, an arc-shaped sliding block is arranged on the inner side of the end, close to the first arc-shaped groove, of the second arc-shaped groove, the junction of the second arc-shaped groove and the step groove is elastically connected with a clamped connection module, and a clamping block is arranged on the side, located on the clamped connection module, of the inner side of the second arc-shaped groove. The connecting efficiency of the first plate body and the second plate body can be improved, and the demounting and mounting efficiency is improved.

The invention discloses an anti-slip cable saddle structure for suspension bridges. The anti-slip cable saddle structure comprises a saddle. The bottom of a trough of the saddle is provided with at least one longitudinal partition parallel to trough walls. At least one discontinuous clamp plate layer is arranged between each two adjacent longitudinal partitions or between each longitudinal partition and the corresponding trough wall. Each discontinuous clamp plate layer is formed by linking at least four tangential clamp plates in the longitudinal direction. Besides the bottom of the trough and the sidewalls all providing effective friction, the added tangential clamp plates and longitudinal partitions provide effective friction, so that slip resistance is greatly improved; slipping between a main cable and the trough can be prevented; an effective solution is provided for cable saddle structures of small side- and middle-span ratio suspension bridges or multi-pylon multi-span suspension bridges, and overall rigidity, wind resistance and bearing capacity of the bridges are improved.

The invention provides a cover component of a top-pressing elevator weight block. The cover component of the top-pressing elevator weight block comprises a cover component body in a semi-rectangular shape as a whole. The cover component body is held on the outer of a U-shaped counterweight beam, and locked. The cover component body includes an outer locking block in the semi-rectangular shape and two inner locking blocks in the semi-rectangular shape which are correspondingly connected to the inside of both sides of the outer locking block. The two inner locking blocks are located on the U-shaped opening side of the counterweight beam and the outer locking block is located on the opposite side of the U-shaped opening side of the counterweight beam. The outer locking block and the inner locking blocks are locked through a first bolt locking assembly. The two inner locking blocks are correspondingly sandwiched outside of both side ends of the U-shaped opening side of the counterweight beam. Top pressing members are correspondingly arranged on the two inner locking blocks, and are pressed against inner walls of both sides of the counterweight beam. The top pressing members interact with the locking force of the outer side of the locking blocks to improve the locking performance.

The invention discloses an insulating shielding cover. The insulating shielding cover comprises an insulator shielding cover and a cross arm shielding cover; the insulator shielding cover comprises a shielding cover body; the two sides of the shielding cover body are provided with connecting arms opposite to each other; clamping plates connected with the shielding cover body are arranged at the lower ends of the connecting arms; fixed pressing plates are arranged on the outer side walls of the connecting arms; one side of the shielding cover body is a horizontal side wall; a place reservation hole is formed in the lower part of the horizontal side wall; one end of the cross arm shielding cover is connected with the horizontal side wall; and the cross arm shielding cover communicates with the insulator shielding cover through the place reservation hole. Not only is the tightness of shielding at the joint guaranteed, but also the repeated shielding of the joint is avoided; time and shielding tools are saved; and the working efficiency is improved.

The invention relates to an installation system for a power distribution device, comprising a fixed slide frame and a slide rail press-fitted into the slide frame, the slide rail is provided with a power distribution device and at least A groove, the groove has opposite first side and second side, the said at least one groove is installed with a positioning piece that prevents the sliding frame and the slide rail from sliding relative to each other, and the positioning piece includes a laterally extending The body, the body has a side abutting against the carriage and has two opposite ends in the transverse direction, one end is provided with a tenon part, and the tenon part is connected with the first side and the second side of the groove. The side is extrusion fit, and the end of the body opposite to the tenon is a free end, and the tenon is provided with a protrusion for pressing the tenon into the groove or pulling it out from the groove through the free end out of the lever fulcrum.

The invention belongs to the technical field of wood-plastic plates and particularly discloses a fabricated composite wood-plastic plate. The fabricated composite wood-plastic plate comprises a firstplate body, a second plate body, a connecting block and a step groove; the first plate body is connected with the second plate body, and the connecting block is arranged at the position, correspondingto the second plate body, of one end of the first plate body; a first arc-shaped groove is formed in the position, corresponding to the connecting block, of one end of the first plate body; a slidingring is elastically connected to the connecting block, a connecting module is hinged to the outer side of the sliding ring, and a fast demounting module is arranged on the inner side of the connecting block; and a second arc-shaped groove is formed in the position, corresponding to the first arc-shaped groove, of one end of the second plate body, an arc-shaped sliding block is arranged on the inner side of the end, close to the first arc-shaped groove, of the second arc-shaped groove, the junction of the second arc-shaped groove and the step groove is elastically connected with a clamped connection module, and a clamping block is arranged on the side, located on the clamped connection module, of the inner side of the second arc-shaped groove. The connecting efficiency of the first plate body and the second plate body can be improved, and the demounting and mounting efficiency is improved.

The invention provides an embracing-hoop type elevator counterweight filler cover component. The embracing-hoop type elevator counterweight filler cover component comprises a cover component body, wherein the whole of the cover component body is in a rectangular-frame shape, the cover component body is arranged on the periphery of a vertical beam of a counterweight filler housing in an embracing-hoop mode and is locked, the cover component body comprises four L-shaped locking blocks which are connected in a head-to-tail mode in sequence, and every two adjacent locking blocks are locked through bolt locking assembly. According to the embracing-hoop type elevator counterweight filler cover component, sequential connection of the four L-shaped locking blocks is adopted, regulating tanks are formed in connection parts, size is convenient to adjust, the embracing-hoop type elevator counterweight filler cover component is suitable for vertical beams of counterweight filler housings with different thicknesses and sizes, and the applicability of the embracing-hoop type elevator counterweight filler cover component is improved; in addition, according to the embracing-hoop type elevator counterweight filler cover component, friction between the cover component body and the vertical beam of the counterweight filler housing is improved, friction between contacting surfaces of two adjacent locking blocks is improved, the friction performance is improved effectively, mutually sliding is prevented, and the locking performance is improved.

The present invention discloses a universal hinged in-ear hearing aid, comprising front, middle and rear parts of the hearing aid, the front part of the hearing aid includes a loudspeaker, the rear part of the hearing aid includes a body, and the middle part of the hearing aid includes a sound Conducting device, the sound conducting device is a hinged connection device, one end of the hinged connection device is connected to the front of the hearing aid, and the other end is connected to the rear of the hearing aid, the rotation of the hinged connection device The angle can be controlled freely, and the rotation elevation angle can be as high as 60 degrees, which can meet the requirements of the corner of the human ear canal. The in-ear hearing aid provided by the present invention can be completely placed in the ear, has strong concealment, and always maintains elastic contact with the ear canal, and its front part can be placed in the deep ear canal close to the eardrum of the human body. Air circulation, long-term wearing is not easy to sweat, effectively reduce feedback and occlusion effects, the transmitted sound is clear, and the gain loss is small. It is a universal flexible in-ear hearing aid suitable for any hearing-impaired patients.