58results about How to "Adjust the amount of compression" patented technology

The invention provides a train moving die experiment system, wherein the power device is constituted by a compression air ejection mechanism, a barrow and a flywheel accelerating mechanism; the flywheel accelerating mechanism is constituted by a plurality of flywheels driven by a motor below the line support rear area; the vertical position of the barrow is arranged between the flywheel accelerating mechanism and the line support; the horizontal position thereof is arranged between a testing car and the compression air ejection mechanism; the catch bar on the upper surface of the barrow penetrates through a guiding groove of the line support upwards and aligns with the tail part of the testing car; the line support in front of the flywheel accelerating mechanism is provided with a hydraulic barrow interceptor which has the same vertical position with the barrow; and the ejection rod of the compression air ejection mechanism is aligned with the tail part of the barrow. The system has strong power, the testing car has great shape and heavy weight, the testing car can reach a higher speed in a shorter time, the experiment environment is more close to the real conditions and the experiment results are more reliable.

The invention discloses a novel aerobics treading and jumping training device, relates to the technical field of fitness equipment, and mainly aims to solve the problem that the treading and jumping training strength of an existing device cannot be adjusted. The device comprises a base plate and a springboard, a plurality of telescopic rods are connected between the base plate and the springboard;the telescopic rod is sleeved with a first spring. An external thread section is arranged on the lower rod section of the telescopic rod; the external thread section is in threaded connection with asecond magnet ring; a first magnet ring is mounted on the lower surface of the springboard outside the telescopic rod; the first magnet ring and the second magnet ring have opposite magnetic poles; abuffer mechanism is further arranged between the base plate and the springboard; according to the pedal plate, the first magnet ring and the second magnet ring are arranged, the effect of initial acting force on the pedal plate can be adjusted by rotating the second magnet ring, the buffering mechanism is arranged, and the effect of adjusting the pedal force is further achieved; an adjusting mechanism is arranged, so that the inclination angle of the gangplank can be adjusted.

The invention provides a lever-type inerter synergistic shape memory alloy self-resetting structural system. The structural system comprises two columns, a beam, a connecting block, a level, a mass block, a rigid bracket, and self-resetting dampers. The two columns are installed at the two ends of the beam respectively to form an n-shaped frame structure. The connecting block is arranged in the middle of the beam. The top end of the lever is connected with the connecting block in a movable mode, and the connecting block moves horizontally to drive the lever to swing. The mass block is arrangedat the bottom end of the lever. The rotating fulcrum of the lever is arranged on the rigid bracket. The self-resetting dampers are mounted between the rigid bracket and the lever. According to the structural system, large inertia is provided for the structural system with small mass by utilizing the mass amplification effect of inertia, so that the effect of flexibly adjusting the natural vibration period of the structural system is achieved; and the energy consumption efficiency of the self-resetting dampers can be remarkably improved through the deformation amplification effect of the lever, and the self-resetting acting force of the self-resetting dampers on the structure is improved.

The invention relates to the field of grinding devices, in particular to a force feedback flexible floating grinding power head and a use method thereof. The force feedback flexible floating grindingpower head comprises a main shell body, and the main shell body is internally provided with a main shaft for realizing contact; and the end part of the main shell body is provided with a fixing mechanism, a positioning mechanism is arranged between the main shell body and the main shaft, and a flexible detection mechanism for sensing grinding force is further arranged between the main shell body and the main shaft. The use method comprises the steps of (1) depth adjustment; (2) pre-detection; (3) inception; and (4) working. According to the force feedback flexible floating grinding power headand the use method thereof, springs are used as thrust output elements, the end parts of the springs are provided with spring fixing bolts, so that the compression of the springs can be adjusted, andat the same time, the springs can be easily repaired or replaced, and the grinding force of materials can be automatically adjusted according to the grinding materials; and pressure sensors are mounted on the end parts of the springs, so that the real-time detection of the grinding force can be realized, and the grinding feed displacement can be measured according to the grinding force.

The invention discloses a self-stabilization single-face thin film restrictor with a prepressure adjusting function. The problem of adjusting prepressure of the single-face thin film restrictor and the problem that prepressure cannot adapt to the working condition are solved, the effect of adjusting prepressure of the restrictor is achieved, and therefore the restrictor is capable of meeting the application requirement of working condition changes. Prepressure fluctuation can be automatically stabilized to stably control the throttling gap and realize the ideal throttling ratio. According to the technical scheme, the self-stabilization single-face thin film restrictor comprises an upper valve body and a lower valve body, an elastic thin film is arranged between the upper valve body and the lower valve body, a prepressure cavity is formed between the bottom of the upper valve body and the elastic thin film and communicated with a throttling conical hole, an adjusting stud is arranged in the throttling conical hole, an upper oil outlet hole is formed in the adjusting stud, and a throttling conical valve is arranged in the upper oil outlet hole through an elastic element in a supported mode; a throttling cavity is formed between the bottom of the lower valve body and the elastic thin film, a throttling table is arranged at the top of the lower valve body, and the throttling cavity is communicated with a lower oil outlet hole through a throttling gap between the throttling table and the elastic thin film.

The present invention relates to a shock and noise reducing device comprising: an elastic member constituted by a collection of a plurality of elastic chips; and an elastic container that compresses the elastic member and receives the same therein, wherein the elastic container includes: a bottom plate; a body coupled to the top side of the bottom plate and having a hollow cylindrical shape, wherein the body is open at the bottom thereof and has an open through-hole formed in the central portion of the top side thereof; and a compressing member provided inside the body and above the elastic member to transmit external shock to the elastic member while vibrating up and down in response to the shock. The present invention is advantageous in that the device does not use a binder and thus there is no emission of hazardous materials, so that the device can also be used indoors; there is no reduction in the elastic capability of the elastic chips, and there is no emission of fine dust or reduction in durability due to damage to the elastic chips or a binder; and it is possible to easily adjust the height and direction of the elastic container by improving the elastic container, to easilycompress the elastic chips, and to easily adjust the degree to which the elastic chips are compressed.

The invention relates to a building edge protection easy to disassemble and assemble. The building edge protection comprises vertical rods and transverse rods, wherein the transverse rods are connected between the adjacent vertical rods, the vertical rods comprise upper support plates, upper support rods, springs, spring support seats, spring elasticity adjusting sleeves, sliding sleeves, left upper connecting rods, left lower connecting rods, right upper connecting rods, right lower connecting rods, lower support rods and lower support plates, the upper support plates are supported on the upper layer surface of a building, the lower support plates are supported on the lower layer surface of the building, the upper support rods penetrate into the lower support rods and can move up and down in inner cavities of the lower support rods, the lower support rods are connected with the lower support plates through pin shafts, two convex columns are respectively arranged on the left and right sides of each sliding sleeve and are matched with the left upper connecting rod and the right upper connecting rod, limiting mounting holes are formed in the left upper connecting rod and the left lower connecting rod as well as the right upper connecting rod and the right lower connecting rod, and positioning pins are assembled at the limiting mounting holes. The building edge protection has the advantages of safety, reliability, no damage to a building structure during installation, convenience in disassembly and assembly, no generation of construction waste, convenience in transportation and capability of recycling.

The invention discloses a traditional Chinese medicine processing grinding device. A grinding device body, a connection rod, a rotating rod and a holding handle are included; the top of the grinding device body is provided with a protective cover which is provided with a compressing hole, and the compressing hole is connected with a tight jacking rotary knob; meanwhile, the lower end of the tightjacking rotary knob is in screw connection with a connection block through a spring; the protective cover is connected with a connection column on a grinding barrel through the compressing hole, and the middle portion of the protective cover is provided with a sliding hole; a grinding block is fixed to the lower end face of the protective cover through a screw; the lower end face of a grinding body is provided with a connection groove, and the grinding body is connected with a positioning column through the connection groove; the upper portion of the positioning column is provided with a boss,and the upper portion of the boss is connected with a screen plate through an elastic piece; and an external thread is machined outside the grinding barrel. The traditional Chinese medicine processing grinding device can be used for performing secondary grinding on Chinese herbal medicine, then the grinding effect of the Chinese herbal medicine is improved, and the grinding quality of the Chineseherbal medicine is improved.

The invention relates to the field of medical instruments, in particular to a torsion-controllable lumbar vertebra turning-around device. The lumbar vertebra turning-around device comprises a main body, a rotating drum, a torsion structure and a limiting structure; the main body is provided with an inner cavity and an opening communicated with the inner cavity; the rotating drum is rotatably accommodated in the inner cavity and is positioned at one end, close to the opening, of the inner cavity; the axis of the rotating drum coincides with the axis of the main body; the torsion structure comprises an elastic piece, a first end face gear and a second end face gear. The first end face gear is connected with the rotary drum, the second end face gear is contained in the inner cavity in a sliding mode along the axis of the main body, and the first end face gear is meshed with the second end face gear; the limiting structure is connected with the main body and located at the end, away from the opening, of the main body. The elastic piece is contained in the inner cavity, and the two ends of the elastic piece abut against the limiting structure and the second end face gear respectively. The limiting structure is used for adjusting the compression amount of the elastic piece. According to the torsion-controllable lumbar vertebra turning-around device, the phenomenon that the lumbar vertebra screw slips during installation can be avoided.

The invention discloses a letter bending machine, and belongs to the technical field of stereoscopic luminous letter machining equipment. The letter bending machine comprises a rack, and a plate clamping device is arranged on the rack; a cutting device is arranged below the plate clamping device and comprises an installation base, a rotating disc is installed on the installation base in a rotating mode, a cutter bar is arranged on the rotating disc in a sliding mode, a cutter head is arranged on the cutter bar, and a linear driving device making the cutter bar move linearly is arranged between the rotating disc and the cutter bar; a stopping block used for limiting the rotating position of the cutter bar is arranged on the rack, and a limiting block corresponding to the stopping block in position is installed at one end, close to the cutter head, of the cutter bar. According to the letter bending machine, once electric control fails, the limiting block on the cutter bar will impact the stopping block to prevent the cutter bar from continuing rotation, and it is effectively avoided that cutter tipping happens on the cutter head rotating at high speed because the cutter bar does not rotate in place; safety performance of using the letter bending machine is improved through mechanical limiting.

A double-eccentric ultralow temperature butterfly valve comprises a valve body, a valve rod and a butterfly plate. The double-eccentric ultralow temperature butterfly valve is characterized in that a manhole is formed in the valve body, and an upper maintenance cover is arranged at the position of the manhole; a sealing component composed of a sealing ring, a pressing ring and a jacking and pressing component is included; the inner side face of the sealing ring is sealed with the butterfly plate, the jacking and pressing component comprises a locking ring, a plurality of jacking and pressing screws arranged on the locking ring and locking nuts connected with the jacking and pressing screws, the end portions of the jacking and pressing screws are pressed on the outer end face of the pressing ring, a circular bead face is arranged at the end, away from the pressing ring, of the locking ring, and a compression ring compressed on the circular bead face is inserted in the inner cavity wall of the valve body. Through the structure, the sealing ring is convenient to replace online, and the online maintenance of the valve body is more convenient and faster. In the maintenance process, only the upper maintenance cover needs to be opened, and the sealing component is dismounted one by one. In addition, the position of the pressing ring is controlled by adjusting the jacking and pressing screws, the compression amount of the sealing ring can be adjusted, and therefore the sealing performance of the valve is guaranteed, and the safe reliability of the valve is improved.