313 results about "Static friction" patented technology

The utility model relates to a clamp for accurate grinding of a right-angle measuring tool workpiece. The clamp comprises a base, a pressing plate and a top plate. The base is L-shaped, a plurality of vacuum chucks are embedded in the bottom surface of the positioning groove at intervals, and the bottom of each vacuum chuck is connected to a vacuum generator; two limiting tables are arranged on the base, supporting blocks are fixed to the tops of the two limiting tables respectively, the two ends of the top plate are fixed to the two supporting blocks respectively, guide rods arranged in the vertical direction are fixed between the two supporting blocks and the top plate respectively, the pressing plate is located between the base and the top plate, and the two ends of the pressing plate are slidably connected to the two guide rods in a sleeving mode respectively; and the top plate is connected with a pressing driver. The base is matched with the pressing plate, the right-angle measuring tool to be machined is pressed and positioned under the combined action of the L-shaped upper clamping face and the L-shaped lower clamping face, and clamping is reliable; a vertical pressure is provided through a vacuum negative pressure adsorption force mode, so that the horizontal plane static friction force of the right-angle measuring tool to be machined is improved, and a workpiece is stably clamped on the clamp.

A bicycle wheel assembly structure includes an annular rim, a hub, nipples, and spokes. The annular rim includes multiple rim penetration sections, each of which includes a rim-side limiting part on a circumference. The hub is arranged at the center of the annular rim. The hub includes multiple hub penetration sections. The rim-side limiting part and the nipple limiting part, and also the hub-side limiting part and the spoke limiting part, are all made in a hexagonal pyramid form with apex truncated to form a planar surface and including bevel facets so as to provide an anti-sliding effect resulting from geometric constraint and high static friction at both the annular rim-side and the hub-side. The angle of the hexagonal pyramid of the nipple limiting part is 60°, 90°, or 120°, and an optimum arrangement can be made based on the material elongation of the spokes and the desired tension.

The invention provides a return difference measuring method and device of a gear transmission mechanism in a motor driving system. According to the return difference measurement method, the return difference measurement value is indirectly determined by identifying the critical point that the gear transmission mechanism starts to respond to the driving signal, the critical point marks that the gear transmission mechanism completes the change from the idle stroke state to the effective transmission state, and the return difference measurement value is calculated based on the position data before the critical point. The return difference measurement value is a comprehensive index which contains the comprehensive influence of the gear backlash, the elastic deformation of the transmission shaft and the static friction force and reflects the overall transmission performance of the system, so that the return difference measurement value which reflects the overall transmission performance of the system and is real and comprehensive is obtained through measurement according to the technical scheme of the invention. According to the method, the transmission lag characteristic of the system under the actual working condition can be represented more accurately, and a more reliable data basis is provided for subsequent high-precision motion control.

A combined carpet is provided. The combined carpet includes an upper carpet body and a lower carpet body. The upper carpet body includes a first layer and a first attaching layer under the first layer; the lower carpet body is configured to be paved between the upper carpet and an object surface, and includes a second attaching layer and a second layer under the second attaching layer. An edge area of the first attaching layer extends beyond the second attaching layer to contact the object surface and does not overlap with the second attaching layer, a main area of the first attaching layer and the second attaching layer body realize a relative rest through a static friction force, to prevent relative movement when the upper and lower carpet bodies are connected, thereby forming a detachable combination between the upper carpet body and the lower carpet body.

The invention provides a multi-degree-of-freedom robot clamping jaw structure and a control method thereof, and relates to the technical field of self-adaptive clamping jaws, and the multi-degree-of-freedom robot clamping jaw structure comprises a multi-degree-of-freedom mechanical arm, a double-shaft-hole plate, a first rotating shaft, a second rotating shaft, a cam part, a wobble wheel part and a driving unit. The invention creatively provides a pre-positioning and rolling clamping two-stage clamping mode, firstly, self-adaptive pre-tightening is carried out through independent rotation of the wobble wheel piece, and a gap is eliminated; then continuous rolling extrusion force is applied to the side wall of the workpiece through synchronous and same-direction rotation of the cam piece and the wobble wheel piece; by means of the dynamic linear contact extrusion mode, anti-rotation torque far larger than static friction force can be generated, and therefore on the premise of not depending on the large static friction force, axial movement and circumferential rotation of the workpiece in the carrying process are effectively restrained, and stable clamping in essence is achieved.

The invention discloses an automatic hooking and unhooking method and system for a gantry crane, and relates to the technical field of gantry cranes. The automatic hooking and unhooking method of the gantry crane comprises the steps of coarse positioning, multi-mode sensing, dynamic prediction and path planning, self-adaptive hooking and unhooking and closed loop confirmation. According to the automatic hooking and unhooking method for the gantry crane, through combination of multi-mode sensing and the digital twinborn prediction model, high-precision positioning and path planning in a dynamic environment are achieved, and accurate butt joint of the lifting hook and the corner fitting is achieved. Dynamically predicting a real-time simulation motion track based on a digital twin model, and planning an optimal path to counteract swinging; self-adaptive operation allows fine adjustment of the tail end of the lifting hook to adapt to tiny deviation; static friction and mechanical clamping stagnation can be broken through the micro-motion track action during unhooking, hook residues are prevented, closed-loop confirmation passes multi-sensor cross validation, and it is ensured that operation succeeds.

The invention relates to the field of fungus frame racking, in particular to a stable fungus frame racking machine, the bottom of a fungus frame is usually supported on a movable bearing roller, although a fixing device is arranged on the upper portion of the fungus frame, in the lifting motion, due to the mobility of the bearing roller, the fungus frame can still generate micro displacement or shaking, the fungus frame is separated from a fixing point, and therefore the fungus frame can not be separated from the fixing point. And safety risks in professional conveying of the fungus frames are further caused. When the mushroom frame is horizontally positioned and locked with the locking mechanism, the supporting of the bottom of the mushroom frame and the supporting rollers is converted into static friction from rolling friction, so that the risk of displacement and shaking of the mushroom frame caused by accidental rotation of the supporting rollers in the lifting process is eliminated, and the stability and the safety in the carrying process are improved.

This invention discloses a wide-range power adjustment device for a power vehicle, comprising a frame, a foot crank, a flywheel shaft, a flywheel, a static friction plate, an annular airbag, an airbag baffle, a return spring, a cantilever beam force sensor, a Hall sensor, and a controller. The flywheel shaft with the foot crank is rotatably connected to the frame, and the flywheel is fixedly connected to the flywheel shaft. The static friction plate, the annular airbag, and the airbag baffle are respectively clearance-fitted to the flywheel shaft. The annular airbag is fixedly connected between the static friction plate and the airbag baffle. Each return spring is connected between the static friction plate and the airbag baffle. The fixed cantilever beam force sensor is connected to the top of the static friction plate via a top steel wire rope. The speed measuring probe of the Hall sensor faces the flywheel. The inflation mechanism, the deflation mechanism, the cantilever beam force sensor, and the Hall sensor are all connected to the controller. This invention adopts a friction-damped power adjustment method, without a transmission structure, achieving zero power output and increasing the maximum power range.

This invention discloses a wind turbine yaw bushing device that is easy to disassemble, belonging to the field of wind turbine technology. It includes a yaw bushing body, which is installed in a mounting hole on a base. A pushing assembly is movably disposed within the bottom side wall of the yaw bushing body. A driving sleeve is rotatably disposed within the disassembly hole. A limiting ring is disposed above the driving sleeve, and a limiting block is rotatably disposed at the bottom of the limiting ring. When the yaw bushing body is disassembled, the driving sleeve rotates, causing it to move downwards and propelling the pushing assembly out from the bottom of the yaw bushing body. This allows the yaw bushing body to move upwards within the mounting hole. Simultaneously, lubricating liquid quickly seeps into the space between the yaw bushing body and the mounting hole through a groove, rapidly forming a lubricating film. This effectively reduces the force required to overcome the initial static friction, thus enabling rapid disassembly of the yaw bushing body.

The invention discloses an MEMS (Micro Electro Mechanical System) inertial sensor with high static friction resistance. The MEMS inertial sensor includes a support structure and an inertial structure. The inertial structure comprises at least one inertial mass block, an elastic structure and a stop structure. The resilient structure is mechanically coupled to the inertial mass and the support structure such that when the support structure is subjected to acceleration parallel to the first direction, the inertial mass is movable in a direction parallel to the first direction. The stop structure is fixed relative to the support structure and includes at least one primary stop element and one secondary stop element. If the acceleration exceeds a first threshold, the inertial mass abuts the primary stop element and then rotates about an axis of rotation defined by the primary stop element. If the acceleration exceeds a second threshold, rotation of the inertial mass is terminated when the inertial mass abuts the secondary stop element.

The application discloses a differential pressure mechanical sealing structure and a compressor, and relates to the technical field of mechanical sealing structures, and in particular relates to a differential pressure mechanical sealing structure and a compressor. The structure comprises a shell, an input shaft, a sealing static ring and a sealing dynamic ring, opposite sides of a mounting cavity on the shell are provided with shaft holes which are respectively connected with the inside of the shell and the outside; the input shaft passes through the mounting cavity and the shaft holes on the opposite sides of the mounting cavity and is connected with the sealing static ring; the dynamic friction surface of the end of the sealing dynamic ring is opposite to and adheres to the static friction surface of the sealing static ring, and the outer side of the sealing dynamic ring is provided with a ring of sealing pairs, so that the closed cavity of the mounting cavity is divided into an internal pressure cavity which is connected with the inside of the shell and an oil pressure cavity which is connected with an oil return channel. The sealing structure of the application divides high and low pressure areas by arranging the sealing pairs with comb-shaped sealing on the sealing dynamic ring, forms high and low pressure differences on both sides of the sealing dynamic ring, and forms a pre-tightening force difference between the sealing dynamic ring and the sealing static ring by combining the projection area corresponding to the pressure. The pre-tightening force difference does not decay with the abrasion of the mechanical sealing dynamic ring and the mechanical sealing static ring, but is only related to the current working pressure difference.

The invention discloses an intelligent material sorting device, and belongs to the technical field of material sorting, the intelligent material sorting device comprises a plurality of supports, two symmetrically arranged side plates are mounted on the supports, and a transmission mechanism is mounted between the two side plates; the angle adjusting mechanism can be linked through the scanning controller, the angle of the discharging plate is flexibly adjusted by means of the first electric push rod and the rolling wheels, the static friction force and the gliding requirement of materials with different sizes and weights are met, and the problem of blockage or too fast speed caused by a traditional fixed angle is solved; by means of a transmission belt of the auxiliary discharging mechanism, materials with too small sizes can be accurately pushed to be separated from the transmission belt, and the problem that the materials are difficult to slide off is solved; by matching with the moving and arranging function of the baffle, the material placing deviation can be corrected, and the storage difficulty is reduced; and meanwhile, the materials stably slide down to the second material receiving box along the adaptive angle, so that the collision damage risk is greatly reduced, automatic and precise sorting is integrally realized, the sorting efficiency is improved, and the material loss is reduced.

The application relates to a paper box production equipment field, in particular to a paperboard automatic feeding device, which comprises a feeding mechanism, the bottom of the falling paperboard is pushed by a pushing piece, the falling paperboard is pushed over to the feeding mechanism, the degree of automation is improved, and the production efficiency is improved; due to the friction force between the adjacent paperboards, part of the paperboards is suspended in the air when falling in the vertical direction static friction with the front and rear paperboards; when the pushing piece pushes over the front paperboard, the part of the paperboard loses the friction force and falls to the upper side of the supporting strip and keeps the vertical state; in the retracting process of the turning-over mechanism, the rear side of the pushing piece abuts against the front side of the frontmost paperboard, then the pushing piece is turned over downward along the hinge joint of the inclined block and the U-shaped block in the continuous retracting process, then passes through the lower side of the part of the paperboard, and the pushing piece is turned over upward and reset by the pulling force of the tension spring after passing through the part of the paperboard, so that the paperboard is prevented from being pressed and bent, and the production reliability is improved.

A gripper which has a friction estimation module configured to estimate static and / or dynamic friction forces acting on gripping jaws is provided. The static friction force is calculated on the basis of constraining reactions whereto the gripping jaws are subjected, the constraining reactions being calculated at least as a function of an actuation force exerted on the gripping jaws, a coefficient of friction of gripper materials and / or lubricant used being known. The dynamic friction force is calculated on the basis of speed of the gripping jaws, width of sliding surfaces and distance between the sliding surfaces of the gripping jaws, the viscosity of the lubricant used being known.

The application relates to a friction plate assembly, a set and an electromagnetic clutch, which comprises a pair of elastic annular friction plates, both of which are provided with a central through hole for penetrating an output shaft, an outer ring of one friction plate is provided with an outer spline in the circumferential direction, and an inner ring of the other friction plate is provided with an inner spline in the circumferential direction; at least one friction plate is provided with a space between the center of the outer ring and the center of the inner ring in the axial direction in a free state, and the center of the inner ring is away from the other friction plate in the axial direction; the friction plate has a first state and a second state, when the friction plate is in the first state, the center of the inner ring and the center of the outer ring of the friction plate are coincident, and the two friction plates are tightly attached to each other; when the friction plate is in the second state, the friction plate returns to the concave-convex shape before deformation due to the disappearance of the magnetic force, so that the dynamic and static friction plates are quickly separated, and the problem that the planar friction plates cannot be completely and reliably separated in liquid is effectively solved.

The invention discloses a quick opening mechanism for composite material curing equipment, which relates to the technical field of autoclaves and comprises a tank door, a rotating arm, a door opening hydraulic cylinder and a rotating door hydraulic cylinder. According to the quick opening mechanism of the composite material curing equipment, the tank door is separated from the sealing surface and then rotates in order, static friction of a sealing piece does not need to be overcome, driving force needed by the door opening hydraulic cylinder is remarkably reduced, and energy consumption of a hydraulic system is reduced. Meanwhile, stress concentration of transmission parts such as the rotating arm and the shaft head supporting unit is reduced through stable action, damage of impact loads to a bearing and a support is avoided, the service life of core parts is prolonged, and the overall maintenance cost of equipment is reduced. The device is simple in structure, convenient to operate, free of impact and clamping stagnation, capable of avoiding equipment shaking or out-of-control risks caused by abrupt change of friction resistance when the tank door rotates, capable of guaranteeing operation safety of operators, coherent and efficient in action process, capable of shortening the opening and closing period of the tank door and capable of reducing non-production waiting time.

This invention discloses a CNC gantry machining center, belonging to the technical field of gantry machining centers. It includes two end beds, a column moving mechanism comprising bed guide rails fixedly mounted on the two end beds, column slides slidably mounted on the two end beds, columns fixedly mounted on the column slides, crossbeams fixedly mounted on the columns, and column moving wheels rotatably mounted on the columns. A drive motor is rotatably mounted on the two end beds, a drive cylinder is fixedly mounted on the column slide, a cross shaft seat is fixedly mounted on the telescopic end of the drive cylinder, a synchronous wheel seat is fixedly mounted on the column slide, and a first rocker arm and a second rocker arm are rotatably mounted on the cross shaft seat. This invention can balance the pressure of the column and slide movement on the guide rails, while reducing the maximum static friction during startup, improving work efficiency while reducing errors.

This utility model discloses a cable anti-scratching structure for machine tools, relating to the field of CNC machine tool technology. It includes a cable chain bracket connected to the moving end of the machine tool, with an anti-scratching component installed at the cable outlet to ensure smooth cable routing. The anti-scratching component includes a rolling sleeve rotatably mounted at the cable outlet bend. The machine tool cable bends and exits after contacting the rolling sleeve, remaining relatively stationary with the rolling sleeve during movement. This utility model, through the cooperation of the rolling sleeve and bearing, allows the rolling sleeve to rotate synchronously with the cable during movement, thereby converting sliding friction into static friction. This directly eliminates direct scratching between the cable and sharp corners, fundamentally solving damage such as insulation layer breakage and exposed copper wire. Furthermore, the segmented rolling sleeve design allows each segment to rotate independently, and the cable retainer groove separates different cables, preventing tangling and pulling of multiple cables due to differences in movement speed or timing. This design is suitable for complex scenarios involving multiple moving parts.

The application discloses a wall-climbing chassis with a negative pressure adsorption type and a rolling wheel skirt cooperative sealing, and belongs to the technical field of wall inspection. The wall-climbing chassis comprises a machine body shell, a driving mechanism arranged in the machine body shell, a vacuum chamber arranged in the machine body shell, a negative pressure mechanism arranged between the vacuum chamber and the machine body shell, flexible skirts arranged on both sides of the bottom of the machine body shell, rolling wheels arranged at the front end and the rear end of the machine body shell respectively, limiting mechanisms respectively arranged on both sides of the rolling wheels, and an adjusting mechanism arranged between the rolling wheels and the flexible skirts. During operation, the negative pressure mechanism extracts air in the vacuum chamber, the flexible skirts are closely combined with a wall surface under the action of negative pressure, and a reliable sealing structure is formed; the driving mechanism is used for realizing the movement of the machine body shell along the wall surface; meanwhile, the rolling wheels convert static friction into sliding friction, and energy consumption is reduced; the adjusting mechanism keeps sealing when being static, releases part of pressure when being in motion, and avoids excessive friction.

The utility model discloses a hole-free ship cable bracket structure, which comprises a bottom plate, channel steel and two platforms for bearing ship cables, the left side and the right side of the top of the bottom plate are connected with the channel steel, and the two platforms are distributed between the two channel steel from top to bottom. According to the utility model, the bottom plate is fixed with the ship deck, so that the two steel channels can be mounted on the ship to serve as cable brackets for use, and the steel channels can be hung on a ship body without punching, and the stability is higher; furthermore, through arrangement of vertical rotating rods which are transversely spaced and two transverse rotating rods which are distributed up and down, each strand of ship cable can independently penetrate in and out, static friction during original pulling is changed into rolling friction, the friction force borne by the ship cable is greatly reduced, and the ship cable cannot make contact with the ship cable or be wound between the ship cable and the ship cable. Furthermore, through the arrangement of long rods which can be unfolded or folded, the height of the ship cable laid on the two platforms can be changed, and high flexibility is achieved.

The utility model provides an anti-settling building pile for building construction, and relates to the field of building piles, the anti-settling building pile comprises a settling column body, a cavity is formed in the settling column body, at least three groups of inserting grooves communicating with the interior of the cavity are formed in the outer surface of the settling column body, each group comprises two inserting grooves, the three groups of inserting grooves are arranged in a staggered mode, and the inserting grooves are arranged in the cavity. The settlement column comprises a settlement column body, a cavity is formed in the inner side of the settlement column body, an insertion groove is formed in the inner side of the settlement column body, an insertion plate is movably connected to the interior of the insertion groove, a movable rod is arranged in the cavity, an extension rod is fixedly connected to the upper end of the movable rod, and a first boss is fixedly connected to the upper side surface of the settlement column body. The inserting plates can be driven to extend out of the staggered inserting grooves, the contact area of the pile body and a soil body is greatly increased, the limitation that a traditional columnar pile only depends on static friction to prevent sedimentation is broken through, the pile body built-in stability is improved, vertical sedimentation and lateral deformation of a soft soil foundation are effectively restrained, the uneven sedimentation risk is reduced, the structure is simple, and force transmission is direct.

This utility model belongs to the field of furniture technology, specifically relating to a concealed locking mechanism for furniture connectors. It includes a first board and a second board, with a wooden plug on the first board. The first board and the second board are connected by a connector, which includes a lock head with a slot. The lock head is fixed to the second board by bolts. The second lock head has a sliding groove inside and a locking block inside. The locking block is elastically connected to the inner wall of the second lock head by a spring. This concealed locking mechanism primarily secures the connector through the mechanical locking of the locking block and the slot. Simultaneously, a push rod inserted into an expansion joint causes the expansion joint to elastically deform and tightly adhere to the inner wall of the groove, generating significant static friction for auxiliary fixation. This dual-fixing mechanism significantly improves the overall stability and shear resistance of the board connection, effectively preventing loosening or displacement of the connection.

The invention relates to the technical field of planetary reducer self-locking, and discloses a planetary reducer self-locking protection structure which comprises a reducer shell, a rotating shaft is rotatably connected to the reducer shell in a penetrating mode, a shell of an annular structure is fixedly connected to the bottom of the reducer shell, and a static friction disc is fixedly connected to the side, away from the reducer shell, of the shell. A plurality of annularly and uniformly distributed sliding grooves are formed in the top of the heat dissipation ring, guide seats corresponding to the sliding grooves in number and position are fixedly connected to the bottom of the dynamic friction disc, mounting seats are slidably connected to the interiors of the sliding grooves, and guide blocks are fixedly connected to the tops of the mounting seats; according to the self-locking protection structure of the planetary reducer, the problem that the contact time of the dynamic friction disc and the static friction disc is delayed due to the increased gap caused by the fact that the dynamic friction disc and the static friction disc are abraded and the gap between the dynamic friction disc and the static friction disc is increased can be solved.

The utility model relates to a normally open solenoid valve for a double-cavity air spring, which comprises a shell, a movable iron core axially moving and a coil assembly controlling the movable iron core to move are arranged in the shell, a base is mounted at one end of the shell, a base is mounted between the base and the coil assembly, and a valve port is arranged on the base. A tappet capable of moving axially is arranged at the position, corresponding to the valve port, between the base and the base, one end of the tappet penetrates through the base to abut against the movable iron core, an elastic piece is arranged at the second end of the tappet, and an auxiliary sealing piece is arranged between the tappet and the base and comprises a sealing body which is in a circular ring shape. The upper end and the lower end of the sealing body are each provided with an outer lip part and an inner lip part, the two outer lip parts, the two inner lip parts and the whole vertical section of the sealing body are in an X shape, the two inner lip parts are in interference fit with the outer wall of a tappet, and the two outer lip parts are in interference fit with a base. A brand new auxiliary sealing piece structure is designed, and the difference value of dynamic and static friction force can be reduced as much as possible through the design.

The invention relates to the technical field of special packaging equipment, in particular to an automatic anti-explosion valve feeding device which comprises automatic feeding equipment composed of a conveyor arranged on a rack, a material fixing mechanism and a material distributing table, the material fixing mechanism comprises a material table, a clamp and a positioning pin, and the clamp and the positioning pin are arranged on the material table. The material table is further provided with a jacking structure used for adjusting the position of the clamp. A bearing mechanism and a knocking structure are arranged on the outer surface of the positioning pin. According to the automatic feeding device for the anti-explosion valves, through active knocking, controllable knocking force in the horizontal direction is generated, workpieces are helped to overcome static friction or weak deformation and fall on a positioning datum plane, the impact force of knocking can enable the multiple layers of anti-explosion valves to be attached more tightly, interlayer gaps are reduced, it is guaranteed that the multiple layers are prevented from being grabbed mistakenly or not grabbed by a conveyor in the follow-up grabbing process, and meanwhile the work efficiency is improved. And chippings on the surface of the explosion-proof valve can be shaken off by vibration during knocking, so that the influence of impurities on the subsequent positioning precision is avoided.

The utility model discloses a prefabricated assembly type frame structure damper which comprises a prefabricated concrete column, the right side of the prefabricated concrete column is fixedly connected with a column embedded part, the right side of the column embedded part is provided with a beam embedded part, the right side of the beam embedded part is provided with a prefabricated concrete beam, and the prefabricated concrete beam is fixedly connected with the column embedded part. The top of the column embedded part and the top of the beam embedded part are each provided with a first flange cover plate. When an earthquake comes and before a prefabricated node does not reach a relative slippage bending moment, relative slippage is generated after friction force between a web, a flange cover plate and an embedded part reaches the maximum value of static friction force, and the node bending moment reaches a sliding bending moment; the displacement of the cover plates and the embedded parts reaches the maximum value, the stress of the bolts is converted, the joints are stressed through connection, in the process, except the cover plates which are replaceable energy consumption parts, other parts and concrete basically work elastically, and only damaged parts need to be replaced after an earthquake.

The utility model relates to a cable irradiation processing frame, and belongs to the field of cable production and processing, the cable irradiation processing frame comprises a rack, the rack is provided with a guide roller and a processor, the guide roller is rotatably connected with the rack, a cable blank bypasses the guide roller, the rack is also rotatably provided with a branching roller, the rotation axis of the branching roller is parallel to the axis of the guide roller, and the processor is connected with the branching roller. A plurality of wire distributing discs are coaxially arranged on the wire distributing roller, and a wire distributing ring groove allowing a cable blank to penetrate through is formed between every two adjacent wire distributing discs. In the advancing process of the cable blank, the cable blank bypasses the branching roller, the branching roller or the branching disc makes contact with the cable blank and rotates, the friction mode between the branching roller or the branching disc and the cable blank is mainly contact static friction, the friction acting force is small, the caused damage degree is small, and the cable blank, the branching roller and the branching disc are not prone to being damaged.

A camera lens driving device comprises a frame body, a first lens base, a second lens base and an actuating assembly. The two guide rail pieces are arranged on two sides of the frame body respectively. The first mirror base is slidably arranged on one side of the two guide rail pieces, and the second mirror base is slidably arranged on the other side of the two guide rail pieces. The actuating assembly comprises a first actuating piece and a second actuating piece. The first actuating piece is arranged on one side of the frame body and is clamped between the first lens base and the second lens base. The second actuating piece is arranged on the other side of the frame body and clamps the second lens base. In response to the static friction force of the second actuating piece to the second mirror base being greater than the static friction force of the first actuating piece to the second mirror base and the static friction force of the first actuating piece to the second mirror base being greater than the dynamic friction force of the second actuating piece to the second mirror base, the first actuating piece moves the first mirror base and the second mirror base, and the second actuating piece selectively moves the second mirror base.

The application discloses an explosion-proof gun head device for cable transmission perforation and relates to the technical field of oil well drilling, and aims to solve the technical problem that the inside of the explosion-proof gun head is prone to safety hazards when repeatedly subjected to high temperature. The application is characterized in that the elastic wave section and the outward-pulling elastic sheet are made of the same material and synchronously deformed, the pre-tightening force increment is offset by one-time linear compensation of the compensation block, the creep acceleration cycle is broken, and the spring fatigue is delayed; the directional rotary movement of the compensation block is realized through the universal ball and the inclined guide gap, the secondary range compensation is completed by cooperating with the gradually changing arc side, the safe distance between the transmission thunder needle and the detonator is accurately kept, and the misfire is eliminated; the elastic section of the stable movement structure provides normal damping, the damping is adaptively enhanced with the compensation action, the static friction dead zone is eliminated, the piston flutter jamming is inhibited, the peak value damping of the secondary rotary movement is triggered, the piston violent movement caused by the suction effect is converted into controllable displacement, the action threshold drift is avoided, and the non-target layer mis-triggering is eliminated.