14results about How to "Avoid frictional contact" patented technology

This utility model relates to the field of semiconductor saturable absorber protection technology, specifically to a solid-state laser semiconductor saturable absorber packaging device, including a base, a SESAM body, a lens barrel, and a dustproof lens; one end of the lens barrel is sleeved on the outside of the dustproof lens, and the other end of the lens barrel is connected to the base; the SESAM body is disposed inside the lens barrel, and the SESAM body is connected to the upper end face of the base; by adding a lens barrel and a dustproof lens, the SESAM body is encapsulated and protected, isolated from the external environment, avoiding frictional contact between the SESAM body and external dust particles, preventing external environmental pollution, ensuring the service life of the SESAM body, and meeting practical application requirements.

The present invention discloses a composite material anti-jumping natural inhibition type manhole cover and a method thereof, and belongs to the field of manhole cover technology. The composite material anti-jumping natural inhibition type manhole cover and a method thereof of the present invention include a metal manhole cover, a manhole cover seat and a manhole platform seat, and the manhole cover seat is provided with a built-in gasket ring inside. In order to solve the problem that the pillar and U-shaped column seat structure in the above scheme can achieve the effect of bite and anti-deviation, but its overall support is relatively poor, and it will also wear out over time and lose the bite force, the locking operation of the manhole cover can be completed by the rotation combination of the male shaft lock ring buckle and the female shaft lock ring buckle, so that when a vehicle passes on the manhole cover, the manhole cover will not bounce up due to the influence of the reaction force. This locking structure can play an anti-theft role while the manhole cover is deflected. The novel locking structure can prevent the manhole cover from being stolen except for the staff.

The invention discloses an overturning anti-shaking device for tube panel hoisting, and relates to the technical field of hoisting auxiliary tools. The device comprises a bottom frame, two side frames and a connecting rod, the two side frames are installed on the two sides of the bottom frame, connecting assemblies are arranged on the two sides of the connecting rod, buffering assemblies are arranged outside the two side frames, and a jacking assembly is arranged at the bottom of the bottom frame; the buffer assembly comprises a rotating block, the rotating block is rotationally connected to the exterior of the fixed shaft, sliding groove plates are fixedly connected to the two sides of the rotating block, inserting rods are movably connected to the interiors of the two sliding groove plates in a sleeving mode, two baffles are fixedly connected to the exterior of each inserting rod, and two buffer springs are movably connected to the exterior of each inserting rod in a sleeving mode. The top of the inserting rod is fixedly connected with a hanging ring. Auxiliary lifting points are added through the two lifting rings, the posture can be more stable when the tube panel is lifted, vibration in the lifting process can be absorbed through the buffer springs, and therefore the stability of the tube panel can be further improved when the tube panel is lifted.

The invention relates to a side channel compressor (1) for a fuel cell system (31) for conveying and / or compressing a gaseous medium, in particular hydrogen, comprising: a housing (3) and a drive (6); a compressor chamber (30) which extends in the housing (3) about an axis of rotation (4) and which has at least one circumferential side channel (19, 21); the invention relates to a side-channel compressor (1) having a housing (3), a rotor chamber (44) in the housing (3), and a compressor wheel (2) in the rotor chamber, which compressor wheel is rotatably arranged about the axis of rotation (4) and is driven by means of the drive (6), the side-channel compressor (1) having at least one bearing (27, 47) on a cylindrical bearing tongue (12), and wherein the corresponding bearing (27, 47) is arranged in the rotor chamber (44). 47) has a bearing outer ring (24), a bearing inner ring (22) and a bearing inner chamber (40) which is sealed from the rotor chamber (44) by means of at least one sealing element (26). According to the invention, the bearing inner chamber (40) can be separated from the rotor chamber (44) by a sealing element (26) in such a way that either a frictional seal or a contactless seal can be established between the bearing inner ring (22) and the sealing element (26) depending on the operating state of the side channel compressor (1). The present application also relates to a fuel cell system (31) having the side channel compressor (1) of the present application.

The invention relates to the technical field of cranes, and particularly discloses a power supply cable winding drum device of a crane. Comprising a hollow cylinder, and side discs are arranged on the two sides of the hollow cylinder; one side of the hollow cylinder is rotationally connected with one side of the side disc through a rotating bolt, an outer inclined round hole is formed in the outer side of the hollow cylinder, a cleaning assembly is rotationally connected to the inner wall of the hollow cylinder through a rotating bolt, an outer connecting rod is fixedly connected to the outer side of the side disc, and a concave connecting plate is fixedly connected to the end, away from the side disc, of the outer connecting rod. According to the power supply cable winding drum device of the crane, a plurality of outer inclined round holes are formed in the surface of the hollow cylinder, so that dust and impurities can conveniently penetrate through the outer inclined round holes, and the dust and the impurities are difficult to attach to the surface of the hollow cylinder; and damage caused by friction contact between the cable and the surface of the winding drum due to the fact that the winding drum is affected by the working environment after long-time use and a large amount of dust and impurities adhere to the surface is prevented.

This invention discloses an automated crop planting device for cuttings, relating to the field of agricultural machinery. It includes a planting cylinder and a lifting platform. The upper part of the planting cylinder has a seedling delivery component within a seedling separation chamber. Its trumpet-shaped support plate, with its wide opening facing upwards, accommodates seedlings. A concentric seedling separation plate at the bottom is driven to rotate by an independent motor. Mechanical single-plant separation is achieved through seedling holes and notches. Seedlings fall under gravity through the delivery tube into the lower cutting chamber. The rotation speed of the seedling separation plate is linked to the walking speed and the cutting frequency to ensure proper spacing between plants. The cutting chamber is equipped with an adaptive cutting component. Seedlings fall between a pair of synchronously rotating inward-facing conveying gears, and are elastically clamped by a tension spring to adapt to irregular shapes and avoid damage. Simultaneously, the V-shaped clamp of the vertical cutting component moves downwards to correct tilting, achieving precise vertical insertion of seedlings into the soil. This device realizes mechanical single-plant separation, elastic adaptive clamping, and vertical cutting, improving operational efficiency and survival rate.

The invention discloses a power transmission line tower ground wire hoisting appliance, and relates to the field of hoisting appliances, the power transmission line tower ground wire hoisting appliance comprises a motor base, a control box, a connection mounting plate, a winding and unwinding guide frame, a fixed top plate, a winding and unwinding roller and a traction rope, the control box is fixedly mounted on one side of the motor base, and the connection mounting plate is fixedly mounted on one side of the upper end of the motor base. According to the power transmission line tower ground wire hoisting device, the inclined included angle of a tower is avoided, the ground wire is prevented from being in frictional contact with the tower when lifted, the ground wire is safely hoisted, the hoisting device is used for hoisting the ground wire at different positions of the tower, the ground wire is further prevented from being in frictional contact with the tower when lifted, and the safety of the tower is improved. The ground wire hoisting device is simple in structure, convenient to use and capable of meeting the ground wire hoisting requirements of different positions, the overall size of the hoisting device is reduced, hoisting use at any position can be achieved, and the hoisted ground wire is wound through rotation of the ground wire winding roller.

The present invention relates to a side-channel compressor (1) for compressing a gaseous medium for a fuel cell system (2), the side-channel compressor having a housing having a first housing component (3) and a second housing component (4), wherein the first housing component (3) has a bearing journal (5) extending along a rotation axis (R), the bearing journal having a journal root section (6) and a journal main section (7), wherein a bearing inner ring (8) of a bearing device (9) is arranged on the journal main section (7), wherein the bearing device (9) has a first bearing (19) and a second bearing (20), wherein a compressor wheel structure assembly (10) is arranged on the bearing outer ring (11) of the bearing device (9) in a manner rotatable about the rotation axis (R). According to the invention, the compressor wheel assembly (10) has an additional cap-shaped sealing element (13) on its end side facing the second housing component (4), particularly on the first end face (30), which at least almost completely covers the bearings (19, 20) and / or the bearing assembly (9) in a manner orthogonal to the axis of rotation (R), wherein the cap-shaped sealing element (13) is at least indirectly connected to the hub (16), thereby enabling fluid encapsulation of the internal space (27) of the hub (16) relative to the environment (29) of the compressor wheel assembly (10). Furthermore, the invention relates to a fuel cell system (2) having a side-channel compressor (1) according to the invention.

This utility model relates to the field of brake calipers, and discloses an electromechanical brake caliper assembly integrating a parking lock mechanism, including a brake caliper assembly and a brake motor assembly, which are fixedly connected. The brake caliper assembly includes a caliper body, a force sensor, a ball screw assembly, and a friction pad assembly. The brake motor assembly includes a PCBA, an ECU main housing, and a lower housing arranged from top to bottom. An actuator motor is installed at the bottom of the lower housing, and a gear transmission assembly and a parking lock device are installed inside the lower housing. The actuator motor and the gear transmission assembly are linked through the parking lock device. A clamping force transmission module is provided between the PCBA and the brake caliper assembly. The PCBA's elastic contact pin is connected to the upper pin, so that the force sensor sends a signal to the PCBA through the clamping force transmission module. Compared with using an external cable to connect the force sensor and the controller to transmit signals, this utility model is simpler to assemble and the signal transmission is safer and more reliable.

The utility model discloses a double row tooth shock absorber technical field's a double row tooth shock absorber gear ring limit baffle, including shock absorber casing, the inside installation of shock absorber casing has double row gear, and the both ends of shock absorber casing are close to double row gear respectively and are provided with gear ring limit component, and the gear ring limit component includes limit baffle, and the one end of limit baffle is connected with output shaft, and the one end of limit baffle away from output shaft is provided with first connecting flange, the gear ring limit baffle of double row tooth shock absorber of this scheme design, through the structural design of baffle connecting cover and baffle adjusting groove, has realized the transition fit between limit baffle and shock absorber casing effectively, avoided the friction contact between limit baffle and double row gear, reduced the problem of excessive wear and heat accumulation, through the structural design of the sliding fit between sealing guide ring and annular guide groove, has further improved the stability of limit baffle, ensures that limit baffle does not occur position deviation under high -strength impact or vibration condition.

The utility model provides an electric supporting rod wire harness protective sleeve and a vehicle. The electric supporting rod wire harness protection sleeve comprises a blanking cap and a wire harness tube connected to the blanking cap. The wire harness tube comprises a bent section, the bent section is made of an elastic material and is bent towards a first preset direction in an initial state, and the wire harness tube is configured to enable the bending direction of the bent section to be unchanged when the two ends of the wire harness tube are far away from each other or close to each other due to external force. The bending section is arranged to be bent towards the first preset direction, so that when the wire harness tube is bent, the moving direction of the bending bulge part of the wire harness tube is the first preset direction, namely the direction far away from the frame of the metal plate of the frame, so that the wire harness tube can be prevented from being in frictional contact with the metal plate when being bent, and the service life of the wire harness tube is prolonged. Therefore, abnormal sound and abrasion of the wire harness tube caused by collision between the wire harness tube and the automobile body can be avoided, and the driving experience of people in the automobile can be improved.

The invention discloses a novel moisture-proof prefabricated electrical junction box, which relates to the technical field of electrical junction boxes and comprises a box body, a box cover detachably mounted at the open end of the box body through screws and a plurality of threading holes formed in the side wall of the box body at equal intervals. The moisture-proof mechanism is used for preventing moisture from affecting connecting parts in the box body, the sealing mechanism is used for improving the sealing performance in the box body, the moisture-proof mechanism comprises two sets of assembling frames symmetrically arranged on the inner side and the outer side of the box body and moisture absorption plates inserted into the inner sides of the assembling frames in a sliding mode, and a switching window is formed in the inner side wall of the box body in a penetrating mode; the switching window is located between the two sets of assembling frames, and a conversion component used for converting the positions of the two sets of assembling frames is arranged in the switching window. Through the arrangement of the moisture absorption plate, moisture in damp air in the box body can be effectively absorbed by the moisture absorption plate in the inner side of the box body by utilizing the moisture absorption property of the moisture absorption plate, so that the air in the box body is kept dry, and parts in the box body are prevented from being affected with damp.

The utility model discloses a high-definition peeping device for top plate hydraulic fracturing drilling. The high-definition peeping device comprises an anti-collision protection head, a flow guide pipe and a drainage protection cover which are sequentially connected from top to bottom. The anti-collision protection head, the flow guide pipe and the drainage protection cover are connected through thread structures, and the lower portion of the drainage protection cover is connected with drilling peeping equipment. The water collecting tank is arranged at the joint of the drainage protection cover and the flow guide pipe, water flow left from the top can be collected, water flow drainage is conducted through the drainage tank, meanwhile, the drainage protection cover is integrally designed to be in a cone frustum shape, and water flow which does not enter the water collecting tank can be directly shunted; meanwhile, the external material is a rubber material, the outer diameter of the bottom is larger than the outer diameter of the peeping equipment, the top and lateral anti-collision function can be achieved, and rock debris and the like in the hole are prevented from directly falling on the transparent protective cover around the peeping probe to cause damage.