1640results about How to "Stable clamping" patented technology

The invention discloses an inner clamping type steel pipe welding clamp, and belongs to the technical field of steel pipe welding. Comprising a bottom plate, clamping wheels and other components, the rotating directions of threads at the two ends of a double-end threaded rod are opposite, the double-end threaded rod and a polished rod are installed on the bottom plate side by side, an output shaft of a first motor is connected with a first bevel gear, a second bevel gear matched with the first bevel gear is fixedly installed in the middle of the double-end threaded rod, and two clamping mechanisms are oppositely installed on a threaded sleeve. The two movable plates are symmetrically and slidably installed in the sliding grooves in the two ends of the bottom plate, and a containing table is fixed to the upper ends of the movable plates. According to the clamping mechanism, the multiple contact parts are used for conducting multi-point positioning on the interiors of the steel pipes at the same time, meanwhile, the height of the clamping mechanism can be adjusted, the steel pipes are directly stabilized in the air through the clamping mechanism, the two steel pipes needing to be welded can be adjusted to be concentric and free of deviation, and the steel pipes cannot be shielded; and welding, grinding, polishing and other work are facilitated, and the precision of butt joint and post-treatment is improved.

The invention relates to the technical field of glass fiber detection equipment, and particularly discloses a glass fiber prepared finished product tensile strength detection device which comprises a base, a translation groove is formed in the top end of the base, two traction assemblies are slidably installed in the translation groove, each traction assembly comprises a T-shaped sliding block, and a U-shaped block is arranged at the top end of each T-shaped sliding block. A U-shaped groove is formed in the U-shaped block, a rotating shaft is rotationally installed on the U-shaped block, an upper clamping plate is fixedly installed on the outer wall of the rotating shaft and located in the U-shaped groove in the U-shaped block, and a fixed gear ring is further fixedly installed on the outer wall of the rotating shaft. According to the device, the upper clamping plate is controlled to move, the rotating plate can synchronously push the lower clamping plate and the rotating rod to rotate, the lower clamping plate and the upper clamping plate are attached to each other, glass fiber prepared finished products with different thicknesses are clamped and fixed, and the contact area of the glass fiber prepared finished products is effectively increased through triangular strips on the upper clamping plate and the lower clamping plate; and a glass fiber prepared finished product is stably clamped.

The invention discloses a C-shaped steel cutting machine, and belongs to the technical field of cutting machine equipment, the C-shaped steel cutting machine comprises a machine table and a mounting table, the top of the machine table is connected with a guide rail, and the C-shaped steel cutting machine further comprises the components of: a mounting table which is fixedly mounted at the top of the guide rail and is provided with a mounting rack; the cutter is mounted on the inner side of the mounting frame through a first electric telescopic rod; the cutting die is fixedly mounted at the top of the mounting table, is matched with the cutter and can be adjusted according to different C-shaped steels; and the clamping assembly is installed on the guide rail and used for discharging the cut C-shaped steel. Through the arrangement of the cutting die, when the C-shaped steel is pushed into the cutting die, the cutting die can play a role in supporting a wing plate of the C-shaped steel, so that during cutting, the phenomena of unevenness and even deformation of a notch can be prevented, and damage to a cutter is prevented.

The utility model relates to the technical field of automobile wire harness detection, in particular to an automobile wire harness conduction detection jig, which comprises a bottom plate and a clamping mechanism, a detection mechanism is arranged on the rear side of the bottom plate, the clamping mechanism is positioned on the front side of the bottom plate, and the clamping mechanism comprises a wire arranging assembly and a fixing assembly. The wire harness detection device has the beneficial effects that a large batch of wire harnesses are separated and separated one by one through the wire arranging assembly, the positions of the wire harnesses are adjusted, the wire harnesses are orderly placed on the surface, and then the two ends of the arranged wire harnesses are pressed and fixed through the fixing assembly, so that stable clamping is realized, the conditions of shaking and the like during detection are prevented, and the detection efficiency is improved. And therefore, the effect of quickly installing and clamping the wire harness is improved, the time for clamping and detecting the wire harness is shortened, and the convenience of installing the wire harness is improved.

The invention discloses an inverted-T-shaped cross-shaped sliding table vertical five-axis machining center, and relates to the technical field of five-axis machining. The precision problem is solved. The machine specifically comprises a base, an X-axis linear guide rail, a saddle, a Y-axis linear guide rail, a rotary table supporting plate, a five-axis cradle rotary table, a stand column, a Z-axis linear guide rail, a spindle box and a vertical tool magazine, the saddle is connected with the base through the X-axis linear guide rail to achieve X-axis left-right movement, and the rotary table supporting plate is connected with the saddle through the Y-axis linear guide rail to achieve Y-axis front-back movement. The five-axis cradle rotary table is installed on the rotary table supporting plate to achieve A-axis and C-axis rotary motion, a stand column is installed on the base, and the spindle box is connected with the stand column through a Z-axis linear guide rail. Compared with a traditional vertical five-axis machining center, a cross-shaped sliding table structure is adopted, overhanging of the saddle and the workbench can be effectively reduced, when the center bears the weight and inertia of a five-axis cradle rotary table, the precision change in the operation process of a machine tool is small, and high-precision five-axis linkage machining of workpieces can be achieved.

The invention relates to a combined clamp which comprises a supporting column, two clamp assemblies and a pipe detection assembly. The two clamp assemblies are installed at the two ends of the supporting column, and the pipe detection assembly is installed on the supporting column. The clamp assembly comprises a support, a first clamping jaw, a second clamping jaw, a driver, a transmission assembly and a positioning assembly. The support is installed at the end of the supporting column, the first clamping jaw and the second clamping jaw are rotatably installed on the support, the driver and the transmission assembly are installed in the support, the transmission assembly is connected with the first clamping jaw and the second clamping jaw, the positioning assembly is installed on the support in a front-back sliding mode, and the positioning assembly is connected with the transmission assembly. The pipe detection assembly is connected with the driver. The combined type clamp has the beneficial effects that the combined type clamp can clamp and center pipes of different specifications, the application range is wide, the operation efficiency can be ensured, and the clamping stability and safety are higher through the two clamp assemblies arranged in parallel.

The invention discloses a clamping robot and a clamping method, and belongs to the technical field of clamping robots, the clamping robot comprises a main body module and a clamping jaw module, the main body module comprises an electric control sliding rail, an electric control moving seat is arranged on the electric control sliding rail, and a mechanical arm is fixedly installed on the front end face of the electric control moving seat; a connecting plate is fixedly connected to one end of the mechanical arm, a top plate is fixedly connected to the bottom of the connecting plate, and through the arrangement of the four-claw clamping assembly, the rack, the hollow arm, the driving assembly, the pressurizing assembly, the supporting assembly and the gear, the device can lift the bottom of an object after the four-claw clamping assembly clamps the smooth and flat object, and the device is convenient to use. And the top of the clamping robot is pressed and limited, so that the smooth and flat object can be clamped by the four-claw clamping assembly more stably, the situation that the clamping robot shakes and falls off in the process of moving and conveying the object is avoided, and the clamping effect of the clamping robot is improved.

The invention relates to the technical field of welding devices, and discloses an anti-explosion valve rod welding device which comprises a welding table, a frame is fixedly connected to the top of the welding table, a fixing device is arranged at the top of the frame, a discharging device is arranged at the top of the welding table, and a slag removing device is arranged at the bottom of the welding table. When the explosion-proof valve rod starts to be welded, the explosion-proof valve rod is placed in a welding area, so that the surface of the explosion-proof valve rod can be fixed through an inner arc of an arc-shaped plate I under the condition that the circumferential surface of the explosion-proof valve rod needs to be welded, and the explosion-proof valve rod is fixed more stably during welding; according to the anti-explosion valve rod clamping device, the anti-explosion valve rod can be clamped more stably, the situation that the anti-explosion valve rod is damaged due to the fact that the force of the air cylinder is too large can be avoided through buffering provided by the first spring in the fixing process, meanwhile, the anti-explosion valve rod can be clamped more stably, and then the stability of the anti-explosion valve rod in the welding process can be further improved.

The utility model discloses a robot welding clamp which comprises a fixing frame, two end clamping devices, a middle clamping mechanism and a connecting base, the fixing frame is in a long strip shape, and the two end clamping devices are sequentially arranged on the fixing frame in the length direction of the fixing frame; the middle clamping mechanism is installed on the fixing frame and located between the two end clamping devices. Connecting seats are arranged at the two ends of the fixing frame correspondingly and used for being connected with a positioner. The welding fixture has the technical effects that the end part clamping device and the middle part clamping mechanism are matched for use, so that a to-be-welded fixture can be stably clamped; the connecting base is arranged and can be connected with a positioner for use, so that the positioner is used for driving the whole clamp to rotate along the axis, a welding gun is always kept in a good welding posture in the welding process, the all-directional welding effect is guaranteed, welding operation of all parts can be completed at a time, repair welding is not needed, automatic operation can be achieved, and the welding efficiency is higher.

The utility model discloses an elbow clamping device with strong stability, which comprises a base, the upper end of the base is fixedly connected with a processing table and a clamping mechanism through a fixing shaft, the clamping mechanism comprises two sliding chutes, a sliding block, a fixing rod, a fixing plate, a groove, a clamping plate and a driving assembly, the upper end of the base is symmetrically provided with the two sliding chutes, and the sliding block is fixedly connected with the processing table. Two sliding blocks are symmetrically and slidably connected to the inner walls of the two sliding grooves, two fixing rods are symmetrically and fixedly connected to the upper ends of the two sliding blocks, two fixing plates are symmetrically and fixedly connected to the side walls of the two fixing rods, and two grooves are symmetrically formed in the side walls, close to each other, of the two fixing plates. Clamping plates are slidably connected to the inner walls of the two grooves correspondingly, and driving assemblies are arranged on the inner walls of the sliding grooves. According to the elbow clamping device, the clamping plate can be driven to clamp an elbow through rotation of the driving motor, a mechanical mechanism is adopted, operation is easy, and more time and labor are saved compared with clamping through a rotating threaded rod.

The overturning and clamping device comprises a mounting base, an overturning frame is rotationally connected to the mounting base, a clamping mechanism is arranged on the overturning frame and comprises a side frame and a clamping piece, a sliding groove for the clamping piece to move is formed in the inner side of the side frame, and the clamping piece is arranged in the sliding groove. The clamping pieces are installed on the sliding grooves in a sliding mode, the number of the side frames is two, the side frames are installed at the left end and the right end of the overturning frame in a sliding mode respectively, the inner side of each side frame is provided with a pair of clamping pieces arranged in parallel front and back, and the two clamping pieces move on the inner sides of the side frames through adjusting assemblies. The double-shaft hydraulic cylinder controls the whole side frame to move above the turnover frame, so that the goods shelf is driven to move horizontally, the turnover frame is prevented from covering the bottom of the goods shelf, and welding operation can completely cover the bottom of the goods shelf.

The invention provides a belt pulley assembly hoisting turnover device, and relates to the technical field of hoisting assistive devices, the belt pulley assembly hoisting turnover device comprises two hoisting arms which are hinged together in an X shape, each hoisting arm is provided with a connecting ring in a penetrating mode, the lower end of each hoisting arm is provided with an adjustable pitching piece, the pitching piece is rotatably connected with a clamping jaw which is matched with a belt groove of a belt pulley, and the clamping jaw is provided with a clamping groove matched with the belt groove of the belt pulley. And a locking piece is arranged between the two suspension arms. According to the belt wheel clamping device, the two lifting arms are pulled through the pull ring to generate clamping action, the two clamping jaws clamp the horizontally-placed belt wheel, the pitching piece is used for adjusting the levelness of the two clamping jaws so that the two clamping jaws can coaxially rotate, the locking piece is used for locking the angle of the two lifting arms, and therefore loosening is avoided, clamping is more stable, and the belt wheel clamping device can also adapt to belt wheels with different diameters; and the universality is improved.

The invention provides a modularized outdoor electric energy metering box, and relates to the technical field of electric energy metering boxes. The electric energy metering box comprises a box body, three hinged doors are hinged to the front end of the box body, a first mounting cavity is formed in one side of the inner wall of the box body, a second mounting cavity is formed in the middle of the inner wall of the box body, a third mounting cavity is formed in the other side of the inner wall of the box body, and a plurality of stabilizing assemblies are arranged on the inner wall of the second mounting cavity. And the inner wall of the second mounting cavity is fixedly connected with three fixing plates, and the two sides of the inner wall of each fixing plate are rotationally connected with a first two-way threaded rod and a second two-way threaded rod correspondingly. According to the modularized outdoor electric energy metering box provided by the invention, when gas in the third mounting cavity enters the second mounting cavity, the gas is dispersed by the distribution plate in the air dispersion assembly and then is uniformly distributed through the distribution holes, so that the situation that a certain place in the second mounting cavity is excessively cooled is effectively avoided.

The invention relates to the technical field of numerical control machine tools, in particular to a positioning type metal machining numerical control machine tool which comprises a machine tool base, a plurality of moving wheels, a control table, a moving seat and a mounting seat, the moving wheels are symmetrically arranged on the machine tool base, and the control table and the mounting seat are both arranged on the machine tool base. The movable seat is movably arranged on the machine tool base and located on one side of the mounting seat, a position adjusting lead screw is movably arranged on the machine tool base and slidably penetrates through the movable seat, the position adjusting lead screw and the movable seat are in threaded fit, a position adjusting motor is arranged on the machine tool base, and the output end of the position adjusting motor is coaxially connected with the position adjusting lead screw. The numerical control machine tool further comprises a machining assembly and a clamping system, the clamping system is arranged on the mounting base, and the machining assembly is arranged on the moving base and used for cutting the cylindrical parts. And the traditional mode that the cylindrical part is manually held by hand to be stabilized is eliminated, and the input amount of labor force is reduced.

The invention relates to the technical field of mutual inductors, in particular to a combined mutual inductor for new energy and an installation and configuration method thereof.The combined mutual inductor comprises an annular current detection winding and a control base arranged at the bottom of the current detection winding, and an annular energy storage winding and a voltage electricity taking assembly are arranged on the two sides of the current detection winding respectively; the energy storage winding is used for obtaining electric energy and storing the electric energy in an energy storage circuit in the control base, and the voltage electricity taking assembly is used for clamping and piercing a to-be-detected cable to obtain a voltage signal. According to the invention, the driving disc provided with the spiral chute drives the plurality of electricity taking needle mechanisms to move radially at the same time, so that the to-be-detected cable is stably clamped and punctured to obtain a voltage signal, clamping is stable, dislocation of the cable and the electricity taking needles is avoided, and an electricity taking signal is stable.

The utility model discloses an irregular workpiece clamp for a numerical control machine tool, and relates to the technical field of workpiece clamps, the clamp comprises a base, a clamping assembly, a rotating assembly and a lifting assembly, the clamping assembly comprises a clamping box, two sliding block grooves are formed in the upper surface of the base, and the rotating assembly is arranged in the clamping box. Two sliding block grooves are formed in the upper surface of the base, the inner side walls of the two sliding block grooves are jointly and rotationally connected with a two-way screw rod through bearings in a penetrating mode, the inner side walls of the two sliding block grooves are both slidably connected with sliding blocks, the two-way screw rod is in threaded connection with the two sliding blocks, clamping boxes are arranged on the upper surfaces of the two sliding blocks, and the rotating assembly is arranged on the upper surface of the base. And the lifting assembly is arranged on the upper surface of the sliding block and used for driving the clamping box to ascend and descend. By means of the clamping assembly, clamping of irregular workpieces is completed, the clamping assembly is more suitable for the shapes of the irregular workpieces, and clamping is more stable.

The invention relates to the technical field of glass fiber reinforced plastic storage tank machining, and discloses a glass fiber reinforced plastic storage tank machining clamping device which comprises a bottom plate, a clamping mechanism is arranged on the bottom plate, and an adjusting mechanism is arranged on the clamping mechanism; the clamping mechanism comprises a rectangular sliding hole and a first motor, and the rectangular sliding hole is formed in the top of the bottom plate. It can be ensured that the glass fiber reinforced plastic storage tank is firmly and accurately fixed in the machining process, machining errors caused by shaking or shifting of the storage tank are reduced, and therefore the machining precision is remarkably improved, the position of the triangular clamping plate can be flexibly adjusted according to the glass fiber reinforced plastic storage tanks of different sizes and shapes, and the machining efficiency of the storage tank is greatly improved whether a small storage tank or a large storage tank is small or large. And the application range of the device is greatly widened, and the cost input and operation troubles caused by mismatching of equipment are reduced.

The invention discloses a new energy ship pipeline fixing support and a fixing method thereof, and relates to the technical field of pipeline fixing.The new energy ship pipeline fixing support comprises a U-shaped transverse plate, a plurality of translation plates are arranged in an opening of the U-shaped transverse plate, an arc-shaped supporting plate is arranged above the translation plates, and a pair of arc-shaped clamping grooves are formed in the two sides of the bottom face of the arc-shaped supporting plate; a pair of arc-shaped sliding plates are clamped in the pair of arc-shaped clamping grooves in a sliding mode, an arc-shaped clamping plate is fixedly arranged at the top end of each arc-shaped sliding plate, and the arc-shaped supporting plate and the pair of arc-shaped clamping plates form an annular clamping cavity; and a pipeline is placed above the U-shaped transverse plate and is inserted into the annular clamping cavities in a penetrating manner. By means of the annular clamping cavity, the pipeline can be evenly stressed in all radial directions in the circumferential direction, and three-dimensional stress balance is achieved; the distance between the translation plates is adjusted according to the length of the pipeline, the clamping force can be evenly distributed in the length direction of the pipeline, and the translation plates and the clamping force jointly ensure that the pipeline can be stably clamped in all directions.

The aluminum alloy anti-collision beam detection mechanism for the automobile comprises a bottom plate and a clamping mechanism, a driving groove is formed in the middle of the upper surface of the bottom plate, two limiting grooves are symmetrically formed in the two sides of the driving groove, a threaded rod is rotationally arranged in the driving groove, a driving handle is fixedly connected to the end of one end of the threaded rod, and the clamping mechanism is fixedly connected to the end of the other end of the threaded rod. The driving handle is movably arranged in one outer side face of the bottom plate, the two clamping mechanisms are symmetrically arranged on the bottom plate, the two clamping mechanisms move face to face or back to back in the bottom plate, and each clamping mechanism is composed of a clamping frame, a supporting roller, a first threaded driving rod and a second threaded driving rod. The anti-collision beam clamping device has the advantages that anti-collision beams with different lengths, widths and thicknesses can be clamped stably, the detection accuracy is improved, and meanwhile, the anti-collision beams can be prevented from falling off during collision.

The invention relates to the technical field of seamless metal steel pipe machining, in particular to clamping equipment applied to seamless metal steel pipe machining, which comprises an L-shaped support, a plurality of groups of push rod motors are arranged at the top end of a horizontal support arm of the L-shaped support, and the top ends of output shafts of the push rod motors are connected with ejector rods; the supporting plate is rotationally arranged at the top end of a vertical supporting arm of the L-shaped support, and the bottom end of the supporting plate makes contact with an ejector rod at the top end of the push rod motor; and the external penetrating assembly is fixedly installed on one side of the top end of the supporting plate, and a deflection abutting rod which is adjusted in a single direction in a normal state is arranged on the external penetrating assembly. In the actual use process, stable abutting can be effectively conducted on the steel pipe from the outer side and the inner side, in the outer side abutting process, the controllable one-way process is achieved, reverse operation is convenient, rotation adjustment of the steel pipe can be achieved as needed in the inner abutting process, and the abutting state during rotation is ensured.

According to the technical scheme, the pincerlike mutual inductor is characterized in that a first shell and a second shell are included, each of the first shell and the second shell comprises a pivoting end and an opening and closing end, a locking mechanism is arranged at the opening and closing end, the locking mechanism comprises a locking bolt and a locking nut, a through mounting hole is formed in the first shell, and a through hole is formed in the second shell. The locking bolt is movably connected with the mounting hole, a spring is axially arranged in the mounting hole, the two ends of the spring abut against the head of the locking bolt and the inner wall of the mounting hole respectively, and the screw portion of the locking bolt extends out of the mounting hole. A butt joint hole corresponding to the mounting hole is formed in the second shell, the locking nut is fixedly arranged in the butt joint hole, and a screw rod part of the locking bolt extends into the butt joint hole and can be in threaded connection with the locking nut. The device is provided with the locking mechanism, and when long-time detection is needed, the locking mechanism can lock the mutual inductor, so that the mutual inductor is stably clamped.

The invention discloses a generator retaining ring surface corrosion defect automatic detection device, and relates to the technical field of corrosion detection, and the generator retaining ring surface corrosion defect automatic detection device comprises a base, a rotating mechanism, an autorotation mechanism, a clamping mechanism, a spraying mechanism, a removing mechanism and a fluorescence irradiation lamp. Through a rotating mechanism, an autorotation mechanism, a spraying mechanism, a removing mechanism and a fluorescent irradiation lamp, a second motor is controlled to operate, the generator retaining ring is driven to rotate, a first motor is controlled to operate, the generator retaining ring in a clamping mechanism rotates along with a rotating disc, a draw-off pump is controlled to operate, and a fluorescent agent is sprayed to the surface of the autorotation generator retaining ring; under the cooperation of the raised erasing block, the fluorescent agent on the surface of the generator retaining ring is erased and the fluorescent agent in the corrosion pit on the inner surface is retained, and after the work is finished, a detector can clearly observe the position and corrosion condition of the corrosion pit through the fluorescent agent, so that the detection effect is effectively improved, and the detection efficiency is improved. The problem that detection personnel cannot easily observe the condition of the corrosion pit is solved.

The invention discloses a laser welding device and method similar to turbine blade circumference equal division, and relates to the technical field of laser welding, the laser welding device comprises a device body, an equal-angle division rotating mechanism, a pressing two-way movement mechanism and a double-pendulum automatic welding head, and an XY-axis movement mechanism is installed on the device body; the equal-angle segmentation rotating mechanism is arranged on the upper side of the XY-axis movement mechanism through the linear reciprocating movement mechanism and used for clamping a first to-be-welded part. The pressing bidirectional movement mechanism is arranged on the upper side of the XY-axis movement mechanism and comprises clamping parts which are symmetrically arranged, and the clamping parts are connected with a moving part; the double-pendulum automatic welding head is connected with the lifting mechanism and used for conducting welding operation when the first to-be-welded part and the second to-be-welded part move to the to-be-welded position. According to the invention, the automatic precision welding of the circumference of the similar turbine blade on the similar turbine main body circumference piece can be realized.

The invention discloses a novel wig tidying device, and relates to the technical field of wig tidying, the novel wig tidying device comprises a box body mechanism, a placing mechanism is arranged in the box body mechanism, a washing and tidying mechanism is arranged in the box body mechanism, a drying mechanism is arranged on the inner wall of the box body mechanism, and the box body mechanism comprises an outer shell; the placing mechanism comprises a bracket, and a plurality of anti-slip strips are symmetrically distributed on the two sides of the outer wall of the bracket. The clamping plates are movably installed on the two sides of the bracket in cooperation with the rotating bases, the springs on the connecting plates are used for pushing the clamping plates to be close to the bracket, then the clamping plates are conveniently matched with the bracket to clamp the base layer on the inner side of the wig, and the anti-slip strips are matched with the anti-slip blocks, so that the friction force after clamping is improved, and the clamping effect is improved. According to the clamping device, the clamping stability is guaranteed, more stable clamping is achieved, the tidying effect is guaranteed, and the situation of falling in the tidying process is prevented.

The invention relates to the technical field of vehicle maintenance equipment, and discloses a telescopic folding type wheel dismounting device which comprises a movable chassis, a folding mechanism is arranged in the movable chassis, and two wheel dismounting mechanisms are arranged outside the folding mechanism. The folding mechanism is used for folding the wheel dismounting mechanism and adjusting the position of the wheel dismounting mechanism, the wheel dismounting mechanism is used for clamping and dismounting wheels, a vehicle body jacking assembly is arranged on the side, away from the folding mechanism, of the interior of the movable chassis, and the vehicle body jacking assembly is used for jacking a vehicle. The folding mechanism comprises two movable frames, and racks are fixedly connected to the inner sides of the movable frames. The vehicle is jacked up through the vehicle body jacking mechanism, then the position of the wheel disassembling mechanism is adjusted through the folding mechanism, the wheel is disassembled from the vehicle through the wheel disassembling mechanism, automatic wheel disassembling is achieved, the automation degree is high, time and labor are saved, and the wheel disassembling and replacing efficiency is improved.

The utility model discloses a gemstone processing tool with a turnover function, which relates to the technical field of gemstone processing, and comprises a support frame, a gemstone positioning machine frame and a turnover assembly, three gemstone clamping assemblies distributed at equal intervals are arranged in the gemstone positioning machine frame, a turnover shaft is welded on the outer wall of one side of the gemstone positioning machine frame, and the gemstone clamping assemblies are connected with the turnover shaft. The overturning assembly comprises an installation plate welded to the side wall of the supporting frame, a gear fixedly arranged at one end of the overturning shaft in a sleeving mode, an air cylinder fixedly installed on the side wall of the installation plate and a rack fixedly connected with a piston rod of the air cylinder. The gemstone positioning machine is provided with the overturning assembly, so that a gemstone clamped on the gemstone positioning machine frame can be overturned, the multi-angle machining requirement of the gemstone can be met conveniently, and the machining efficiency and quality are improved; the gemstone clamping assembly is arranged, two arc-shaped clamps fixed to two centering rods are controlled to be centered and drawn close through rotation of a two-way screw, then gemstones of different specifications can be stably clamped, and adaptability and practicability are improved.

The utility model discloses a wire plug torsion experiment device, which comprises fixing plates, an experiment table plate and a torsion disc, the two ends of the experiment table plate are both provided with the fixing plates, the tops of the fixing plates are both provided with mounting plates, the fixing plates are both internally provided with first screw holes, and the first screw holes are internally provided with fixing screw rods in a threaded manner. A motor is installed in the middle of the bottom of the experiment table plate, and a rotating shaft is installed at the output end of the motor. According to the utility model, the mounting rod, the connecting plate, the clamping block and the spring are arranged, when the wire plug twisting device is used, the tail end of a cable of a wire plug can pass through the space between the clamping block and the twisting disc, at the moment, the connecting plate is pulled to move through the mounting rod under the elastic action of the spring, so that the clamping block is tightly attached to the cable, and the cable can be clamped through the clamping block; a cable can be firmly fixed on the outer side of the torsion disc, the tail end of the cable does not need to be connected with a weight, and the cable can be prevented from falling off from the outer side of the torsion disc.

The utility model discloses an unmanned aerial vehicle hoisting structure, and belongs to the technical field of unmanned aerial vehicle production. The lifting device comprises a machine body, a lifting frame is fixedly connected to the bottom of the machine body, electric telescopic rods are arranged on the two sides of the bottom of the lifting frame, and bearings are arranged on the surfaces of the electric telescopic rods in a sleeved mode. Through the arrangement of the transmission gear and the driven gear ring, the electric telescopic rod is firstly controlled to stretch out, goods are placed on the top of the supporting plate, then the electric telescopic rod is controlled to contract to clamp the goods upwards and stably, the unmanned aerial vehicle can be controlled to fly to an unloading site, the electric telescopic rod is controlled to stretch out, and meanwhile a transmission groove is started to enable the transmission gear to rotate; the transmission gear drives the driven gear rings on the two sides to be meshed, the driven gear rings drive the electric telescopic rods to rotate by 180 degrees, at the moment, the supporting plate is separated from the bottom of the goods, the goods slide to the ground to be automatically unloaded, manpower is saved, and the hoisting efficiency is improved.

The utility model discloses clamping type welding equipment for pipelines, which is characterized in that a clamping cavity is formed in a rotating chuck, the top of the inner side of the clamping cavity is rotatably connected with a bidirectional clamping screw rod along the horizontal direction, and the end part of the bidirectional clamping screw rod is connected with a knob; the outer side of the bidirectional clamping screw rod and the outer side of the guide rod are each connected with two sets of clamping arc blocks which are oppositely arranged, and the arc faces of the opposite sides of the two sets of clamping arc blocks are each provided with a rubber pad in an adhesive mode. The two clamping arc blocks are conveniently and synchronously driven to move through the two-way clamping lead screws before welding, the two two-way clamping lead screws are both semicircular, the two-way clamping lead screws are matched with rubber pads to effectively clamp and limit a pipeline when the pipeline is clamped, and the two-way clamping device can be suitable for clamping pipelines with different pipe diameters; therefore, the clamping stability and the welding precision of the pipeline in the welding process are guaranteed.