11730 results about "Gasket" patented technology

The invention discloses an industrial bolt intelligent identification and accurate grabbing control method and system based on depth vision, and the method comprises the steps: obtaining multispectral image data, carrying out the fusion detection of the nut edge, thread texture and other features of a bolt through an enhanced YOLOv8 network, screening an effective bolt, and eliminating the interference of a gasket, chippings and the like; extracting feature points to solve a 6DoF attitude, fusing vibration data of the mechanical arm to realize motion compensation, and outputting a three-dimensional coordinate and an attitude angle under a coordinate system of the mechanical arm; the three-dimensional coordinates are converted into motion coordinates, and the grabbing position is corrected in combination with the normal vector of the assembly surface; planning a path and generating grabbing strategies such as clamping jaw opening amplitude and clamping force matched with the bolt specification; the clamping force is dynamically adjusted based on feedback of the six-dimensional force sensor, and accurate grabbing is achieved. The system comprises a visual perception subsystem, an intelligent decision-making subsystem and a precise execution subsystem. The bolt recognition precision and grabbing stability in the complex environment are improved, and the assembly requirements of bolts of multiple specifications can be met.

The invention relates to a paraffin type thermostat. The paraffin type thermostat comprises a main valve 1, a cover and seal gasket assembly 2, an upper support 3, a rubber pipe 4, a valve seat 5, a vent hole 6, a lower support 7, paraffin 8, an inductor 9, a bypass valve 10, a central rod 11 and a spring 12. The upper support, the lower support and the valve seat of the thermostat are riveted into a whole. The upper end of the central rod is fixed to the center of the upper support. The lower portion of the central rod is inserted into a central hole of the rubber pipe. The lower end of the central rod is conical. A cavity between the rubber pipe and a shell of the inductor contains the paraffin. The upper portion and the lower portion of the shell of the inductor are provided with the main valve and the bypass valve which are in linkage. The vent hole is formed in the main valve. The paraffin type thermostat is high in heat conductivity and guarantees that an engine cannot be excessively cold.

A substrate holder includes a base configured to receive a substrate; a cover configured to mateably engage with the base, the cover defining an opening formed by inner sidewalls; and a removable insert defining a surface, the removable insert being configured to be received within the opening of the cover. The removable insert includes a gasket; a projection coupled to the gasket; and at least two insert tabs extending from opposite sides of the removable insert, each insert tab being configured to engage with at least one of the inner sidewalls forming the opening of the cover.

The invention discloses an automobile light-weight aluminum part connecting process and equipment based on laser welding, and relates to the technical field of automobile aluminum part laser welding, the equipment is based on a base body, a man-machine interaction control screen is arranged at the front end of the base body, and a driving motor and a threaded rod are arranged on the side wall of the base body; a lateral protection metal plate is fixed to the top end of the tool, a parameter adjusting plate is arranged on one side of the tool, a rotary station driving motor and a self-adaptive clamping tool are fixed to the parameter adjusting plate, an anti-scratching gasket is arranged on the inner wall of the tool in the circumferential direction, and the outer side of the tool is connected with a feeding air cylinder through a linkage lug base. The air cylinder is connected with a pressure controllable extrusion table through a first linkage lug base and a force transmission bending arm. A main bearing support is further welded to a base body, a laser welding head is installed on the main bearing support through a jacking air cylinder, a linear push rod and a fine adjustment lifting table, adjustment stability is guaranteed in cooperation with a guide structure, aluminum parts are prevented from being damaged through flexible clamping, precision is improved through multi-dimensional adjustment, and the precision welding requirement is met.

The invention relates to the technical field of speed reducers, in particular to a multi-stage coaxial speed reducer which comprises an outer cylinder, a first-stage gear ring and a second / third-stage gear ring are arranged in the outer cylinder, and a first-stage speed reducer, a second-stage speed reducer and a third-stage speed reducer are sequentially arranged in the outer cylinder. The first-stage planet carrier framework is axially fixed, and the second-stage planet carrier framework and the third-stage planet carrier framework axially float; gaskets / thrust bearings are arranged between stages to achieve axial supporting and friction reduction, and the last-stage three-stage planet gears adopt staggered-tooth gears to eliminate meshing clearances. Through the coaxial compact integrated design, the large reduction ratio and the compact structure are both considered; due to the lubricating circulation design of inter-stage antifriction supporting and self-adaptive rotating speed, the friction loss is greatly reduced, and the transmission efficiency is improved; the structure of staggered tooth clearance eliminating, elastic buffering and shaft system stabilizing effectively reduces gear abrasion and impact loads, remarkably prolongs the service life, has the advantages of being high in transmission precision, fast in response and stable in operation, and can be used for precise transmission, automobile active stabilizer bars and other scenes.

The invention relates to the technical field of petrochemical equipment sealing, in particular to a flange sealing performance evaluation method based on bolt axial stress, which comprises the following steps: establishing a nonlinear stress relationship between a gasket and bolt axial force; establishing a relationship between the axial stress of the bolt and the sealing contact stress of the contact surface of the gasket under different working pressures; constructing a three-dimensional model of a real sealing surface; establishing a three-dimensional model of the sealing surface contact process; obtaining the change of a leakage gap between the contact surfaces under different contact stresses, and establishing a relation model of the leakage gap of the contact interface and the sealing contact stress; establishing a quantitative evaluation model among the sealing contact stress, the leakage clearance and the leakage rate; obtaining the contact stress under the actual working condition, and calculating whether the corresponding leakage rate meets the tightness judgment standard or not so as to judge the sealing state of the flange. The invention aims to solve the technical problem that the metal sealing performance of in-service flange connection cannot be quantitatively and online evaluated in the prior art.

The invention provides an electric pile assembly line which comprises a preassembling branch line, a material preparation mechanism, a transfer mechanism and a final assembly branch line, the preassembling branch line is adjacent to the final assembly branch line, the material preparation mechanism is arranged at one end of the final assembly branch line, the transfer mechanism is located between the final assembly branch line and the material preparation mechanism, and the material preparation mechanism is used for storing diaphragms, bipolar plates and sealing gaskets. The preassembled branch lines are used for assembling the liquid flow frames, the partition plates and the blankets to form electrodes; the transfer mechanism is used for transferring the diaphragms, the bipolar plates, the sealing gaskets and the electrodes on the adjacent preassembled branch lines to the final assembly branch lines so as to stack the diaphragms, the bipolar plates and the sealing gaskets to form an electric pile. According to the invention, the distances between the transfer mechanism and the material preparation mechanism, the general assembly branch line and the adjacent pre-assembly branch line are equivalent, so that bipolar plates, sealing gaskets and diaphragms on the material preparation mechanism and electrodes on the pre-assembly branch line can be well transferred and stacked on the general assembly branch line to form an electric pile, the space layout is reasonable, the occupied production space is small, the cost is reduced, and the production efficiency is improved. The production efficiency is improved.

A keyboard may include a top case and a bottom case coupled with each other to define an internal compartment. Multiple internal layers are contained within the internal compartment. The multiple internal layers may include a plurality of keys mounted on a switch plate, wherein a portion of each of the plurality of keys protrudes over the top case; a printed circuit board (PCB) layer disposed under the switch plate; a gasket layer disposed under the PCB layer. The gasket layer comprises a peripheral wall and a bottom floor integrally formed with the peripheral wall. The switch plate is coupled with the peripheral wall of the gasket layer.

The application discloses an automatic assembling machine for piston rod assembly, comprising a rack and a connecting seat locking device, a piston rod clamping device, a sealing assembly detection device, a limiting gasket locking device, a nut locking detection device, a lifting device, a translation device and a central control unit arranged on the rack; the central control unit can control all actions of the connecting seat locking device, the piston rod clamping device, the sealing assembly detection device, the limiting gasket locking device, the nut locking detection device, the lifting device and the translation device. The application has the beneficial effects that: through the automatic design of the cooperation of multiple devices, the high precision, high efficiency and high reliability of the piston rod assembly are realized, and the problems of low efficiency, poor precision and easy damage in traditional manual assembly are effectively solved.

The invention relates to the technical field of composite gaskets, in particular to an anti-deformation composite gasket for a new energy thermal management system, which comprises a metal gasket and a rubber body, the metal gasket is integrally in a circular ring shape and is divided into an outer circular ring body and an inner ring belt, and the inner ring belt is positioned on the inner ring of the metal gasket and is thinner than the outer circular ring body; more than three grooves which are uniformly and equally divided are formed in the circumference of the inner ring of the metal gasket, and the rubber body is vulcanized on the inner edge of the metal gasket, is higher than the outer circular ring body towards the two sides in the thickness direction and wraps the outer circular ring body. The design that the rubber body wraps the outer circular ring body guarantees that the rubber body and the metal gasket are tightly combined, the sealing effect of the composite gasket in an automobile air conditioner pipeline system is greatly improved through the improvements, air conditioner refrigerant leakage is prevented, meanwhile, vibration in the automobile running process is absorbed, and noise generated by vibration is reduced.

The application discloses a rotary table type ultrasonic welding device, which comprises a rack, a rotary table, a supporting device and an ultrasonic welding device arranged on the periphery of the rotary table. The rotary table is rotatably installed on the rack. The rotary table is provided with supporting bolts protruding from the bottom surface of the rotary table. The supporting device is in abutment with the supporting bolts through liftable supporting pieces. When the ultrasonic welding device is pressed for welding, the mounting seat can be supported by the supporting device, so that the rotary table is prevented from being deformed due to the pressing. The rotary table is provided with a mounting seat. The mounting seat comprises a bottom plate installed by leveling screws. The rotary table and the mounting seat can be kept horizontal through the leveling screws. The mounting seat is further provided with elastic washers. The elastic compression of the elastic washers can ensure that the workpiece can keep the airtightness of welding even if the workpiece is slightly inclined when being pressed.

The invention discloses an organic silicon heat-conducting gasket and a preparation method thereof, and the preparation method comprises the following steps: mixing and uniformly stirring an organic silicon matrix, a heat-conducting filler, a nano material and a fibrous reinforcing filler to obtain mixed slurry; wherein the organic silicon matrix accounts for 10 to 50 parts; 20 to 80 parts of a heat-conducting filler; 1 part to 10 parts of a nano material; 1 part to 10 parts of fibrous reinforcing filler; the heat-conducting filler comprises surface-modified flaky boron nitride; the mixed slurry is subjected to multiple times of blade coating, forming and curing on a substrate, and an organic silicon heat conduction blank with sheet-shaped boron nitride oriented in the thickness direction is obtained; and cutting the organic silicon heat-conducting green body along the direction perpendicular to the blade coating plane to obtain the organic silicon heat-conducting gasket which is provided with a heat-conducting network in vertical orientation. According to the organic silicon heat-conducting gasket disclosed by the invention, extremely high heat conductivity coefficient can be obtained in the vertical direction by using relatively low heat-conducting filler content; meanwhile, the compression resilience of the gasket is obviously improved.

The invention discloses a photovoltaic panel installation method, system and equipment based on a wind load local shape coefficient and a medium, and relates to the technical field of offshore photovoltaic engineering. The method comprises the following steps: according to a wind load local shape coefficient table and a design drawing, dividing multi-stage shape coefficient distribution areas, including high, medium and low shape coefficient areas, which are determined by local shape coefficient values corresponding to photovoltaic panel mounting positions; the wind load capacity of the pressing block is calculated according to the wind load local shape coefficient, an adaptive photovoltaic pressing block connecting piece is selected according to the wind load capacity, a high shape coefficient area is connected through a U-shaped bolt pressing block, a gasket or sealant is additionally arranged, and a conventional straight bolt aluminum alloy pressing block standard part is used in a middle and low area. And finally, checking bolts and nuts of all pressing block connecting pieces, casually checking other connecting pieces, and adjusting and replacing if the connecting pieces are unqualified. Partitioned reinforced installation can be carried out according to the wind load local shape coefficient, and the problems that in the prior art, the bearing capacity is uneven, and batch falling is likely to happen are solved.

The utility model belongs to the technical field of sand box casting, and particularly relates to a sand box fastening device for casting, which comprises an upper box and a lower box, four corners of a box body of the upper box are respectively provided with a first bolt hole penetrating from top to bottom, and four corners of a box body of the lower box are respectively provided with a second bolt hole penetrating from top to bottom; the first bolt holes and the second bolt holes are in one-to-one butt joint, and screw rods used for connecting the upper box and the lower box into a whole are assembled in the first bolt holes and the second bolt holes. A U-shaped limiting plate is further included. The limiting plate is tightly attached to the outer wall of the upper box and the outer wall of the lower box. Two limiting blocks are symmetrically arranged on the inner wall of the limiting plate, through holes are formed in the limiting blocks, and the two screw rods located on the same side are connected into the through holes of the limiting blocks correspondingly. According to the device, the screw can be quickly disassembled and assembled, the procedure of completely disassembling a nut and a gasket is reduced, and the working efficiency is improved; and the sand box is limited and fixed by connecting the limiting plate through the screw rod, so that the mold closing precision and the pressing effect of the upper and lower box bodies are ensured.

The invention relates to a multidirectional adjusting device of a coating die head, which comprises a rack, a rolling mechanism arranged on the rack and provided with a back roller, and a coating mechanism used for coating a foil, the coating mechanism comprises an upper die, a lower die matched with the upper die, and a gasket arranged between the upper die and the lower die, the upper die, the gasket and the lower die are closed to form a discharging lip nozzle with a partition flow control function, the bottom of the lower die is connected with a multidirectional adjusting mechanism, and the multidirectional adjusting mechanism comprises a left-right fine adjustment assembly arranged at the bottom of the lower die and a front-back adjustment assembly connected with the left-right fine adjustment assembly. The left-right fine adjustment assembly is arranged to drive the upper die, the gasket and the lower die to integrally and horizontally move, the relative position of the discharging lip nozzle and the foil is accurately controlled, the problem that the widths of blank spaces on the two sides are different is effectively solved, the front-back adjustment assembly can dynamically adjust the distance between the discharging lip nozzle and the back roller, and it is ensured that the thickness of a wet film is uniform; and the thickness control precision of the electrode coating is improved.

The utility model provides a small reservoir piezometric tube orifice osmometer telescopic suspension and protection device, which comprises a support base, a lifting plate, a pressure measuring pillar and a data cable, the support base is disc-shaped, the pressure measuring pillar is arranged below the support base, and the pressure measuring pillar can move up and down. According to the scheme, through the combined design of the cable protection cylinder, the mounting plate and the rubber gasket, a stable channel and protection are provided for the data cable, water or other impurities are prevented from permeating into the device through gaps to damage electronic equipment, subsequent maintenance or replacement of the data cable is facilitated, and meanwhile, through the supporting protection insertion plate, the data cable can be conveniently and rapidly protected. The overall structural strength of the device is enhanced, an additional protective layer is provided, damage caused by accidental collision in the carrying, mounting or dismounting process is effectively prevented, and the service life of the device is prolonged.

The invention discloses an elastic diamond grinding wheel, and particularly relates to the technical field of grinding and polishing machining consumables, the elastic diamond grinding wheel comprises a thin-wall elastic metal cover and a cutter bar, the thin-wall elastic metal cover is of a hollow annular body structure, and the diameter, used for being connected with the cutter bar, of one end of the thin-wall elastic metal cover is smaller than that of the center of the thin-wall elastic metal cover; the diameter of one end of the thin-wall elastic metal cover is larger than that of the center, the diameter of the other end of the thin-wall elastic metal cover is smaller than or equal to that of the center, multiple sets of diamond abrasive particles are evenly arranged on the outer side of the thin-wall elastic metal cover, the cutter bar is arranged at one end of the thin-wall elastic metal cover, one end of the cutter bar is of a hollow structure, and a bolt is connected into the hollow end of the cutter bar through threads. The outer side of the bolt is sleeved with a gasket; according to the diamond grinding wheel, the problem that an existing electroplating grinding and polishing wheel or a brazing grinding and polishing wheel lacks flexibility can be solved, the problem that an existing overlapping wheel or an abrasive belt wheel is short in service life can also be solved, a new consumable tool is provided for automatic blade root fillet grinding, and the quality of a ground and polished blade is guaranteed.

The invention relates to the technical field of shield tunnel construction, and discloses a shield tunnel segment joint waterproof material and a waterproof structure, the shield tunnel segment joint waterproof material comprises a component A and a component B; the component A comprises the following component: 30-40 parts of liquid polysulfide rubber; 5 to 10 parts of a fluorinated polyurethane prepolymer; 1-5 parts of a silane coupling agent; 3-5 parts of fumed silica; 8-15 parts of hollow glass beads; 10 to 15 parts of nano calcium carbonate; 0.5 to 2 parts of polytetrafluoroethylene micro powder; 0.1 to 1 part of ettringite; the component B comprises the following component: 1-5 parts of manganese dioxide; and 5 to 10 parts of dioctyl phthalate. By utilizing the characteristics that the sealing gasket has excellent fluidity during injection and can be automatically cured into a high elastomer within a set time, a pre-installed sealing gasket can be replaced by adopting an innovative injection process, and the construction difficulty faced by high-precision shield segment assembly in a high-water-pressure environment is effectively solved.

A friction spacer adapted to be interposed between two mechanical components in order to transfer a force between the two mechanical components, the friction spacer including a flat part having two opposite surfaces defining a thickness, and a plurality of protuberances projecting from at least one of the surfaces, the protuberances of the plurality of protuberances extending from the at least one of the opposite surfaces by a determined average height. The flat part and the protuberances are produced from the same metal material, and the same metal material continuously extends between the flat part and the protuberances.

The pulse and heating gasket comprises inner-layer cloth, an inner-layer adhesive film, an energy conducting film, an FPC circuit board, a middle-layer adhesive film, a battery, an outer-layer adhesive film and outer-layer cloth, the FPC circuit board comprises a pulse unit and a heating unit, and the pulse unit is covered in the energy conducting film; the FPC circuit board is arranged between the inner-layer adhesive film and the middle-layer adhesive film, and the energy conducting film penetrates through the inner-layer adhesive film and the inner-layer cloth to the outside of the inner-layer cloth; the battery is arranged between the middle-layer adhesive film and the outer-layer adhesive film, the outer-layer adhesive film is connected with the outer-layer cloth, and the inner-layer cloth is connected with the periphery of the outer-layer cloth, during application, the pulse unit generates a pulse loop, the heating unit generates a heating effect, and the energy conducting film transmits the pulse loop and the heating effect to a human body; the inner layer adhesive film and the middle layer adhesive film seal the FPC circuit board and the energy conducting film, and the middle layer adhesive film and the outer layer adhesive film seal the battery, so that the waterproof function is achieved. Therefore, the design can be washed by water, and is clean and sanitary.

To provide a terminal board and a manufacturing method of the terminal board, which are capable of improving assemblability with respect to a housing.SOLUTION: A terminal board 1 includes a bus bar 10, a housing 20 provided with an insertion space part 21 into which a second connection part 12 of the bus bar 10 is inserted along an axial direction X, a packing 30 that is inserted into the insertion space part 21 together with the second connection part 12 and seals an annular space between an outer surface of the second connection part 12 and an inner surface of the insertion space part 21, and a packing holder 40 that has a bus bar insertion part 41 through which the second connection part 12 is inserted along the axial direction X, and which is inserted into the insertion space part 21 in a state in which the second connection part 12 is inserted into the bus bar insertion part 41, the other end surface 40a in the axial direction X is in contact with the packing 30, and one end surface 40b in the axial direction X is in contact with a planar part 13a.SELECTED DRAWING: Figure 5

The utility model discloses a remote controller silica gel button punching device which comprises a working table, an air cylinder, an upper die, a lower die and a gasket, the air cylinder is vertically and downwards arranged on the working table, the upper die is connected with a piston rod of the air cylinder, the lower die is fixedly arranged on the working table and located under the upper die, and the gasket is arranged on the working table. The gasket is arranged between the upper die and the lower die, one end of the gasket is rotationally connected with the side face of the lower die, a plurality of supporting pieces are arranged on the lower die, a containing hole is formed in the gasket, and when the gasket is attached to the lower die, the supporting pieces are located in the containing hole. According to the punching device, the gasket capable of rotating around the lower die is additionally arranged on the lower die, and after the punching device punches the remote controller silica gel keys, silica gel waste can be easily pulled out of the lower die by rotating the gasket, so that the difficulty of cleaning the silica gel waste on the lower die by an operator is reduced, and the production efficiency is improved.

A joint floating fixed seat structure includes a fixed seat, an adapter, a guiding sliding set, an abutting gasket and a spring. A receiving space is disposed inside the fixed seat, and the adapter penetrates the receiving space. The guiding sliding set is movably accommodated in the receiving space and sleeved on the adapter, which includes a sliding element that can move left and right and a guiding seat that can move up and down along the sliding element. The abutting gasket is sleeved on the adapter, the spring is located between the guiding sliding set and the abutting gasket and abuts against the abutting gasket and against the adapter by the abutting gasket to eliminate the influence of pre-pressure of the spring.

The invention discloses a horizontal continuous nitration pipeline reactor and a manufacturing method of a refrigerant circulation assembly thereof, and belongs to the technical field of chemical pipeline reactors. The reactor mainly comprises a barrel assembly, a stirring assembly and a refrigerant circulating assembly, and has the advantages of high heat exchange capacity, large unit heat transfer area, high safety and the like. The manufacturing method of the refrigerant circulation assembly is characterized in that a special accessory concentric opposite feeding mechanism is adopted, the mechanism is provided with a bolt chuck and a nut chuck which are coaxial and can move synchronously, and an inner long beam clamping jaw and an outer long beam clamping jaw which can move in the radial direction are arranged on the bolt chuck and the nut chuck respectively. The concentric and opposite accessory feeding mechanism can accurately position components such as angle steel, U-shaped bolts, gaskets and the like and automatically achieve efficient fastening with the spiral coil pipe. According to the method, the technical bottleneck caused by the limited assembly space of the refrigerant circulation assembly is fundamentally solved, efficient and accurate automatic assembly is achieved, and the method has important engineering application value and popularization significance in the technical field of nitrification pipeline reactors.

The invention relates to a pressure tank for installation in a gas-driven vehicle for storing gas and to a method for producing a pressure tank or a preform of a pressure tank, the pressure tank having a rotationally symmetrical, longitudinally extending shape which is cylindrical in the middle region and which is closed at both ends with curved pole caps, the pressure tank has a tank wall, which encloses a cavity for storing gas, and a metal coupling, so-called boss, on each pole cap, the tank wall comprising a reinforcement layer made of a fiber-reinforced plastic and an inner sealing gasket, and wherein the pressure tank has a hollow space for storing gas, and a metal coupling, so-called boss, on each pole cap, and wherein the pressure tank has a hollow space for storing gas, and wherein the pressure tank has a hollow space for storing gas, and a metal coupling, so-called boss, on each pole cap. According to the invention, there is a bushing which is connected to the boss part, the pressure ring and the spring element for sealing in such a way that the spring element is supported on the bushing and the pressure ring is pressed onto the gasket and thus the gasket is pressed in the region on the boss part.

Features relating to a cartridge for use with a vaporizer body are provided. The cartridge mates with the vaporizer body in a cartridge receptacle. The cartridge may include a cartridge body defining a reservoir configured to contain vaporizable material; a mouthpiece coupled to a proximal end region of the cartridge body; at least one proximal absorbent pad wedged within an internal volume of the mouthpiece; a mouthpiece seal with sealing ribs; a cannula defining a vaporization chamber extending through the cartridge body; a resistive heating element; a porous wick configured to draw the vaporizable material in the reservoir towards the vaporization chamber; an internal sealing gasket positioned in a distal end region of the cartridge body; a lower support structure positioned in the distal end region of the cartridge body; and at least one distal absorbent pad configured to wedge within a recess located in the lower support structure.

The invention discloses a sealing protection device for an intermediate joint of a cable for power transmission, relates to the technical field of sealing protection devices, solves the technical problem of sealing, and comprises a first protection cylinder and a second protection cylinder which are both internally provided with grooves. A fixing plate is fixedly installed at the corresponding ends of the first protection cylinder and the second protection cylinder, the fixing plate is fixedly installed in the groove, and sealing assemblies are arranged in the first protection cylinder and the second protection cylinder; the sealing assembly comprises a moving ring slidably mounted in the groove, an air bag is fixedly mounted on the side, away from the fixing plate, of the moving ring, an extrusion ring is fixedly mounted on the side, away from the air bag, of the moving ring, a sealing gasket is rotatably mounted at the end, away from the moving ring, of the extrusion ring, and a guide rod is slidably mounted on the moving ring in a penetrating mode. Sealing operation is facilitated, the sealing capacity of the device can be improved, and the safety protection capacity of the device can be improved.

The utility model provides an optimized detection device for the drawing force of a pipe seam anchor rod, and belongs to the field of pipe seam anchor rod drawing force detection. Comprising a hollow pipe seam anchor rod body, a stress clamping groove lantern ring arranged on the hollow pipe seam anchor rod body in a sleeving mode, a counter-force cone clamped into the stress clamping groove lantern ring, threaded steel bars screwed into the counter-force cone and the hollow pipe seam anchor rod body and a counter-force cylinder arranged on the periphery of the counter-force cone. A hydraulic jack and a pressure sensor are sequentially arranged above the counter-force cylinder; a pipe seam anchor rod gasket and an improved gasket are sequentially arranged below the counter-force cylinder; a cylindrical protrusion is arranged at the bottom of the improved gasket, and a groove is formed in the center of the improved gasket. The influence of the external environment on the hollow pipe seam anchor rod pull-out test is reduced by building the platform, and the stability and repeatability of the test are improved; by improving the design of the cylindrical protrusion and the groove of the gasket, the pull-out test force transmission structure is effectively attached to the uneven rock wall, and meanwhile the exposed end of the test anchor rod can be effectively protected through the device.

The utility model provides a multi-point lock body which comprises a locking assembly and a driving assembly, the driving assembly comprises a driving block, a driving block first gasket and a third driving strip, and the locking assembly comprises a second spring bolt and a driving spring. The second spring bolt is connected to the spring pressing block through the thrust spring, the spring pressing block is fixed in the lock body, and the driving block first gasket is fixedly connected with the driving block, is provided with a shifting end and is used for shifting the second spring bolt to compress the thrust spring and driving the second spring bolt to retract; the driving spring is arranged in a driving spring mounting groove of the lock body and is limited by the driving spring mounting groove; the third driving strip comprises a first bow part and a second bow part, the first bow part covers the driving spring, the second bow part accommodates and pushes the driving block, and the driving spring drives the third driving strip to align the rotated driving block. The utility model can solve the problem that most of the existing lock bodies are in one-way transmission, and the transmission strip can only move in one direction.

The improved pneumatic actuator comprises a first shell and a second shell which are detachably assembled together, and an inner cavity is formed after the first shell and the second shell are assembled; the air tap is arranged on the first shell and partially extends into the inner cavity; the device further comprises a driving rod, the driving rod extends into the inner cavity from one side of the second shell, the part, located in the inner cavity, of the driving rod is provided with a piston, the side, facing the second shell, of the piston is provided with a spring, and at least one end of the spring is arranged on an adjusting gasket. A diaphragm is arranged on the side, facing the first shell, of the piston, a sealed air cavity is formed between the diaphragm and the first shell, and the inner end of the air nozzle is communicated to the air cavity. According to the improved pneumatic actuator, the main shell is of a two-half type detachable assembly structure, the main shell can be conveniently disassembled to replace and adjust the internal structure, springs with different elastic coefficients can be conveniently replaced, and therefore the improved pneumatic actuator can be better matched with different operation target working conditions of a supercharger.