11results about How to "Increase the separation distance" patented technology

The invention relates to the technical field of anti-impact tests, in particular to an anti-impact test device for an automobile polycarbonate sheet. The testing device comprises a testing device body, a clamp assembly and an adapting piece, when the size of a tested plate is relatively large, the adapting piece can be compressed and used for increasing the distance between the tested plate and a ball falling mechanism, and when the size of the tested plate is small, the adapting piece can be closer to the ball falling mechanism. According to the invention, when the falling ball body collides with the surface of a large plate, the buffer amplitude generated by the adapting piece to the large plate is small, and in the small plate test process, the pressure borne by the adapting piece is small, the resilience force is large, and when the falling ball body collides with the surface of the small plate, the buffer amplitude of the adapting piece to the small plate is larger than that of the large plate; therefore, the impact force borne by the large plate is larger than that borne by the small plate on the whole, and the situation that different plates are excessively detected is effectively reduced.

The invention relates to the technical field of elevator track correction technologies, in particular to a straightening device for an elevator guide rail, which comprises a guide rail body and a straightening component, and the guide rail body consists of a plurality of guide rail sections; the straightening component comprises a first bearing plate, a second bearing plate and two top supporting rods, a limiting hole is formed in the first bearing plate, one end of each top supporting rod is connected to the second bearing plate, the other end of each top supporting rod penetrates through the corresponding limiting hole, and an adjusting bolt is arranged on the side, corresponding to the top face of the first bearing plate, of each top supporting rod. In the operation of straightening the first to-be-calibrated section, the adjusting bolt is screwed firstly, so that the spacing distance between the reference section and the second to-be-calibrated section is increased, and after the pressure applied to the body by the guide rail section above the first to-be-calibrated section is eliminated, the first to-be-calibrated section is corrected and straightened by adopting an oscillation method; in this way, it can be ensured that the acting force applied to the first to-be-calibrated section can be effectively released, and stress is prevented from remaining on the first to-be-calibrated section.

The invention relates to the technical field of paddle equipment, in particular to a contra-rotating paddle operation device and an engine, and the contra-rotating paddle operation device comprises a first rotating shaft, a second rotating shaft, a first power mechanism, a second power mechanism, a first transmission mechanism and a second transmission mechanism, first blades are arranged at one end of the first rotating shaft; second blades are arranged at one end of the second rotating shaft; the output end of the first power mechanism and the output end of the second power mechanism are arranged in the radial direction of the first rotating shaft and the second rotating shaft. The first power mechanism and the second power mechanism are connected with the first rotating shaft and the second rotating shaft through the first transmission mechanism and the second transmission mechanism; a first bias assembly is arranged in the first transmission mechanism, and the input end and the output end of the first transmission mechanism are arranged in a staggered mode through the first bias assembly. The overall length of the shafting can be kept unchanged, meanwhile, the occupied space of the first power mechanism and the second power mechanism is increased, the situation that the output power is affected due to size limitation is avoided, and the power transmission effect is guaranteed.

The invention discloses an optical lens group of a police law enforcement recorder, which comprises seven lenses which sequentially comprise a first lens 11, a second lens 12, a third lens 13, an aperture 10, a fourth lens 14, a fifth lens 15, a sixth lens 16 and a seventh lens 17 from an object side to an image side, the optical lens group satisfies the following conditional expression: 0.012 lt; (CT1 to CT2) / EFLlt; 0.071, 0.07, 0.07; 1.9 lt, 1.9 lt; r < 14 > / EFLlt; 4; 0.4 lt; (R7-R8) / TTLlt; 0.6 part; on the basis of improving the imaging quality, the spherical aberration is corrected, the total length is adjusted, and the front group light receiving capability is internally adjusted.

The utility model discloses a kind of bar conveying discharge devices, including arrangement platform (1), the middle part of arrangement platform (1) is connected with guide slot (2), the end of guide slot (2) is connected with baffle (3), the guide slot (2) of baffle (3) inner side is equipped with blanking opening (4), the above of blanking opening (4) is equipped with conveying belt (5), the side of blanking opening (4) is equipped with pusher plate (6), one end of pusher plate (6) is slidably connected on the arrangement platform (1) of guide slot (2) side, the other end of pusher plate (6) extends to baffle (3) outside and rotationally connected with eccentric wheel (7), the middle part of eccentric wheel (7) is connected with driving motor (8), the below of blanking opening (4) is equipped with material shovel (9) being inclinedly arranged.The utility model can arrange round bar blank in material shovel sequentially, to improve the processing efficiency of round bar blank for operating personnel.

The utility model relates to the technical field of dragging electromechanical equipment, in particular to rail type electric dragging equipment which comprises a chassis assembly arranged above a ground connecting rail, and a front traction wheel set and a rear transmission wheel set are installed on the front side and the rear side of the bottom of the chassis assembly respectively. A power unit used for driving the front traction wheel set to operate is fixedly installed at the bottom of the middle section of the chassis assembly, a steel wire rope dragging mechanism is installed at the top of the chassis assembly, and a buffering stabilizing unit is fixedly installed at the position, on the rear side of the steel wire rope dragging mechanism, of the top of the chassis assembly. The rear end of a traction steel wire rope on the steel wire rope dragging mechanism penetrates through the buffering and stabilizing unit and is connected with a track trolley dragged on the rear side of the traction steel wire rope. According to the rail type electric dragging equipment, dual-power rail traction in the material transferring process can be achieved through the driving unit and the steel wire rope dragging mechanism, it can be effectively guaranteed that the rail trolley can stably and passively move forwards, and rapid traction and transferring of materials are guaranteed.

The utility model provides a numerical control finish machining cylindrical grinding machine for roller manufacturing, and relates to the technical field of cylindrical grinding machines. The connecting base is fixedly connected with a driving shaft of a grinding machine, three movable clamping blocks are installed in the connecting base in a surrounding mode, the end of a casting roller is inserted into the connecting base, and the movable clamping blocks make contact with the end of the casting roller. The outer portion of the connecting base is connected with a movable ferrule, and the movable ferrule is connected with the three movable clamping blocks. According to the utility model, the T-shaped inclined block A is in sliding fit with the fixed chute, and the T-shaped inclined block B is in sliding fit with the movable chute, so that the effect of guiding the movement of the movable clamping block is achieved; after the end of the casting roller is inserted into the connecting base, the spiral ring is rotated, the spiral ring pushes the movable ferrule to move outwards, the movable ferrule drives the three movable clamping blocks to move inwards synchronously, the spacing distance of the three movable clamping blocks is shortened, the movable clamping blocks make contact with the end of the casting roller, and the effect of clamping and limiting the end of the casting roller is achieved; and the stability of casting roller polishing operation is guaranteed.

The invention provides a thread machining auxiliary assembly, and relates to the field of internal thread machining. One side of the hollow supporting frame is fixedly connected with a fixed clamping base through bolts, three supporting rods are arranged on the outer side of the fixed clamping base in a surrounding mode, and each supporting rod is connected with two parallel connecting rods. A transmission screw is installed in the fixed clamping base, one end of the transmission screw is connected with a movable part, and the movable part is connected to the outer portion of the fixed clamping base. One ends of the parallel connecting rods are connected with a clamping jaw, and the clamping jaw is connected with the two parallel connecting rods. Through cooperation of the fixed ratchet disc and the movable ratchet disc, the rotation locking effect on the transmission screw rod is achieved, reverse rotation of the transmission screw rod is prevented, the stability of the state of the transmission screw rod is guaranteed, the problem of looseness of a screw tap clamping part is effectively avoided, and the thread machining precision is guaranteed. The screw tap chuck solves the problem that when a traditional screw tap chuck carries out machining operation, the screw tap clamping portion is prone to loosening, and the thread machining precision is affected.

The utility model relates to the technical field of Bluetooth earphones, in particular to a Bluetooth antenna and a head-mounted Bluetooth earphone. The Bluetooth antenna is arranged in the head-mounted Bluetooth earphone, the head-mounted Bluetooth earphone comprises an earphone shell, and the earphone shell comprises a metal shell and a plastic shell. The Bluetooth antenna comprises a first connecting part and a second connecting part, the first connecting part is provided with a first side face and a second side face which are oppositely arranged, the first side face is provided with an antenna radiation area, and the antenna radiation area is arranged at the position, close to the side edge, of the first side face; the second connecting part is flexibly connected with the first connecting part, the second connecting part is provided with a third side face and a fourth side face which are oppositely arranged, the third side face is provided with reference ground, and the reference ground is electrically connected with the antenna radiation area through a circuit. Wherein the first connecting part can be bent relative to the second connecting part, so that the antenna radiation area is arranged in a direction far away from the metal shell. The head-mounted Bluetooth earphone comprises the Bluetooth antenna. The Bluetooth signal transmission of the Bluetooth earphone applying the Bluetooth antenna is stable.

The utility model relates to the technical field of building construction, in particular to a constructional column concrete pouring device which comprises a hopper, a flow guide pipe is connected to the bottom of the hopper, two fixing plates are arranged in the middle of the hopper, fixing base tables are arranged at the upper ends of the fixing plates, hopper fixing devices are arranged on the fixing base tables, and each hopper fixing device comprises a first fixing arm. One end of the first fixing arm is detachably connected with the fixing base table, a base plate is arranged at the other end of the first fixing arm, the back face of the base plate is fixedly connected with the first fixing arm, two sets of clamping mechanisms are arranged on the front face of the base plate, each clamping mechanism comprises a clamping base, a second fixing arm and a clamping hoop, and the clamping bases are fixedly arranged on the front face of the base plate and provided with rotating shafts. According to the hopper fixing device, the hopper can be fixed to the inner side of a scaffold, an operator is prevented from standing on the edge for construction, and potential safety hazards are eliminated.

This application relates to a frequency converter unit, a frequency converter, and industrial control equipment. The frequency converter unit includes: a capacitor body, a bottom shell, a signal connector, and a cable connection assembly. The capacitor body includes an upper shell and a capacitor. The capacitor is disposed inside the upper shell, and a cavity is formed between the capacitor and the upper shell. The bottom shell has a mounting cavity. The bottom shell is detachably connected to the bottom of the upper shell. The signal connector is disposed on the upper shell and is positioned corresponding to the cavity. The cable connection assembly is disposed on the bottom shell and is positioned corresponding to the mounting cavity. The signal connector and the cable connection assembly are located on the same side of the outer shell. This utility model has the advantage of solving the problem of signal lines and output cables crossing and overlapping, and reducing the failure rate of the frequency converter.