877results about How to "Force balance" patented technology

A drive assembly is described which can apply a pure torque to a driven member while allowing for limited motion of the driven member in the radial direction. This drive assembly is particularly suitable for converting an Internal Combustion (IC) vehicle to an IC-electric hybrid vehicle comprising installation of two electric motors coupled to a drive shaft of the vehicle via the drive of this invention such that the electric motors can provide some or all of the mechanical power required to propel the vehicle while accepting some relative motion between the existing vehicle drive shafts and the chassis and imposing minimal radial force on the drive shaft.

The invention provides a lower limb powered shape righting device which comprises a waist supporting assembly and a left leg powered mechanism and a right leg powered mechanism which are the same in structure, the left leg powered mechanism and the right leg powered mechanism are symmetrically mounted on the two sides of the waist supporting assembly, and the waist supporting assembly is provided with a power module and a controller; the left leg powered mechanism is composed of a foot assembly, a shank assembly and a thigh assembly, the foot assembly is hinged to the shank assembly, the shank assembly is hinged to the thigh assembly, and the thigh assembly is hinged to the waist supporting assembly; the shape righting device further comprises an electric push rod, and the electric push rod is electrically connected with the controller; one end of the electric push rod is hinged to the shank assembly, and the other end of the electric push rod is hinged to the thigh assembly to drive the thigh assembly and the shank assembly to move relative to each other. The lower limb powered shape righting device has the advantages that the structure is stable, controllable performance is good, the lower limb powered shape righting device is portable, and a patient who is unhealthy in the lower limbs or a patient who suffers from knee, ankle and foot diseases can be assisted in conducting daily rehabilitation training independently.

The present invention relates to a load-bearing frame multistage wind-wheel power generator for wind-driven power generation. It is characterized by that it includes the following several portions: a circular stabilized frame connected with ground, a '+' shaped load-bearing rotary frame mounted on the circular stabilized frame by means of rotating device, a supporting frame and a power generator mounted on said '+'-shaped load-bearing rotary frame, first gear box set in the central position of '+'-shaped load-bearing rotary frame, second gear box which is set in the top portion of said supporting fame and is opposite to said first gear box, frame-type multistage wind wheel group with different diameters which is mounted on the supporting frame and symmetrically-arranged gear drive mechanisms.

The invention relates to a lifting net box with an inner liner and a lifting support system of the lifting net box. The invention consists of two parts: the net box with the lifting function and the lifting support system, wherein the net box is provided with the telescopic inner liner and mainly comprises a floating pipe, the inner liner, a separation plate, a ventilation main pipe, a ventilation hose, an air distribution pipe, a water communication pipe, a safety cap and the like, and the lifting support system mainly comprises an air pump, a communication pipe, an exhaust pipe, a valve, a flow rate distributor, an air distribution joint and an air pressure meter. The lifting support system on the sea level is connected to the ventilation main pipe through the ventilation hose and is then connected to the inner liner arranged in the floating pipe of the net box through the air distribution pipe, the inner liner can expand and contact under the effect of the air pump, a water body in the floating pipe is discharged when the inner liner expands, the upward floating of the net box is realized, the water body outside the net box enters the floating pipe from the water communication pipe through the siphon effect when the inner liner contacts, the downward sinking of the net box is realized, and the downward sinking is automatically stopped when the net box sinks down to a degree that a sinking element suspended at the bottom of a fishing net is in contact with the sea bed.

The invention discloses an adjustable spray nozzle which comprises a spray nozzle main body, at least two baffle plates, elastic pieces for applying external force onto the baffle plates and an adjusting piece arranged on the spray nozzle main body in a sleeving way. The adjustable spray nozzle has the benefits that the adjustable spray nozzle is provided with the two or more baffle plates, and the baffle plates can simultaneously rotate outwards or inwards under the action of the adjusting piece so as to realize the jet area and shape regulation; as the baffle plates are provided, the jet area is regulated by means of the rotation of the baffle plates, not the deformation of the baffle plate selves, so that the regulation within a larger range can be realized; the adjustable spray nozzle can be suitable for spray devices with various jet apertures.

The invention discloses an OLED (Organic Light-Emitting Diode) display panel packaging structure and a packaging method. The packaging structure comprises a base plate and a cover plate, wherein the base plate comprises a first substrate; multiple pixel areas are formed on the first substrate; each pixel area is internally provided with an OLED device and a pixel circuit for driving the OLED device; the OLED device is located on the pixel circuit; the cover plate comprises a second substrate; a metal isolation wall is formed around the pixel area on the base plate; the metal isolation wall is vertical to the first substrate and protrudes against the surface of the OLED device; a metal layer is formed on the second substrate; the position of the metal layer is corresponding to that of the metal isolation wall; the melting point of the metal layer is lower than that of the metal isolation wall; and the metal layer and the metal isolation wall are welded to seal the OLED device inside the metal isolation wall. According to the embodiment of the invention, through forming the metal isolation wall around the pixel area, the welding metal layer is formed at the corresponding position on the cover plate, sealing between the cover plate and the base plate is realized through a hot pressing welding mode, the packaging effects are improved, and the screen body frame size can be reduced.

The invention discloses a self-loading and unloading heavy-load shelf with an adjustable layer interval, and belongs to the field of shelves. The self-loading and unloading heavy-load shelf comprises a main framework, a layered frame, a manual winch, steel wire ropes, a pulley block, a heavy object and a lifting hook, wherein the layered frame comprises rolling lifting sliding sleeves, heavy-load slide rails and a tray; the heavy-load slide rails are arranged on both sides of the tray, and are arranged on vertical columns of the main framework through the rolling lifting sliding sleeves arranged at the two ends of the heavy-load slide rails; the manual winch is fixed on one side of the main framework, and four steel wire ropes are led out of the manual winch; after the steel wire ropes pass through the pulley block on the top of the main framework, two of the steel wire ropes are combined together and are connected with the hoisting hook, and the other two steel wire ropes are connected with the heavy object; hoisting rings are arranged on the four corners of the tray respectively and are correspondingly connected with the four steel wire ropes, and the tray is lifted or lowered through the manual winch. By adopting the self-loading and unloading heavy-load shelf, the height of a laminate can be adjusted under the condition that the laminate is under load; moreover, loading and unloading of heavy goods can be realized, and the self-loading and unloading heavy-load shelf is particularly suitable for storing heavy goods.

The invention discloses a telescopic track chassis, which comprises a left track frame, a right track frame, a left telescopic oil cylinder, a right telescopic oil cylinder and a center frame, wherein the left telescopic oil cylinder is arranged between the center frame and the left track frame; the right telescopic oil cylinder is arranged between the center frame and the right track frame; the left track frame comprises a left telescopic girder; the right track frame comprises a right telescopic girder; the left telescopic girder is matched with a left telescopic hole of the center frame; the right telescopic girder is matched with a right telescopic hole of the center frame; the telescopic direction of the left telescopic oil cylinder is parallel to a center line of the left telescopic hole; and the telescopic direction of the right telescopic oil cylinder is parallel to a center line of the right telescopic hole. Under the condition of state transition of the telescopic track chassis, the variation of the width between the left track frame and the right track frame can be realized by a hydraulic system, so that the transforming process and the operating process between an operating state and a filed transition state are simplified and the operating property of the telescopic track chassis can be improved; and simultaneously the rigidness and the strength of the telescopic track chassis under the construction state can be guaranteed.

The invention relates to a rotary valve type large torque hydraulic corner self-servo valve, which has the technical scheme that: a valve body (10) is concentrically arranged in a cylinder body cylindrical cavity (18); a valve sleeve (8) is concentrically arranged in a valve body cylindrical cavity (27); a right end of a valve plug (9) penetrates through the valve sleeve (8) so as to be concentrically arranged in the valve body cylindrical cavity (27); and an output shaft of a motor (3) is in key joint with an inner hole (46) on a left end of the valve plug (9) concentrically. Fixed stops (7) are respectively arranged on an upper part and a lower part of an inner wall of a cylinder body (4), and are in movable fit with the valve body (10); two blades (17) are fixed on an outer wall of the valve body cylindrical cavity (27), are arranged at an angle of 180 degrees, and are in movable fit with the cylinder body (4); and the fixed stops (7) and the blades (17) are in staggered arrangement with the blades (17). The rotary valve type large torque hydraulic corner self-servo valve has the characteristics of simple structure, easiness in processing, balance in stressing of the valve plug, large output torque, good dynamic property, flow gain linear, quick respond speed, and high control accuracy.

The invention relates to a wall climbing operation robot suitable for moving on a variable-curvature wall surface. The wall climbing operation robot is characterized in that the robot comprises two moving modules independent of each other and a vehicle body intermediate platform; the two moving modules independent of each other are identical in structure and are arranged symmetrically with the vehicle body intermediate platform as the center and connected with the vehicle body intermediate platform through limiting connecting joints with two degrees of freedom correspondingly; the two moving modules independent of each other comprise the right moving module and the left moving module; each moving module comprises a driving structure, a transmission structure, a travelling structure, a tensioning structure and a gap type permanent magnetic attraction structure which are fixed to a vehicle frame; the two moving modules has the two rotational degrees of freedom relative to the vehicle body platform through connection of the limiting connecting joints so that the robot can adapt to the surface curvature change of a magnetic conductive structural body.

The invention discloses a cracking furnace for producing ethylene by cracking hydrocarbon steam. The cracking furnace is characterized in that a radiant coil is a two-stage branched and diameter-altered radiant tube; a plurality of first-stage tubes are combined into one tube in an inverted Y-shaped tube form at the lower end of the second-stage tube; and the first-stage tubes are connected with the second-stage tube through a three-dimensional structural connector formed by symmetric curved tubes and S-shaped curved tubes. The invention has the following beneficial effects: the mechanical property defects of a 2-1 type branched tube, a 4-1 type branched tube and the like are overcome; and the technological properties can be improved, and the service life of the radiant coil and the operational cycle of the cracking furnace can be prolonged finally.

The invention relates to a monitoring camera with the cleaning function and convenient to maintain. The monitoring camera comprises struts, a body and a protective cover. The monitoring camera furthercomprises an overhauling mechanism and a cleaning mechanism. The overhauling mechanism comprises a first driving assembly, a top plate, a lifting sleeve, a driving shaft, two supporting rods, two first bearings and two transmission assemblies. The cleaning mechanism comprises a second driving assembly, a water collecting tank, a water conveying pipe, a water pump, a rotating pipe, a cleaning strip, two fixing shafts, two second bearings and at least two nozzles. The first driving assembly comprises a first motor, a worm and a first gear; the transmission assembly comprises a wire spool and asteel wire rope. According to the monitoring camera with the cleaning function and convenient to maintain, the lifting of the main body is achieved through the overhauling mechanism. The overhauling convenience of the camera is improved. The cleanliness of the protective cover is improved through the cleaning mechanism, and the shooting definition of the camera is improved.

The invention discloses a forging die, which belongs to the technical field of die design, and includes an upper die seat backing plate, an upper die seat, an upper die, a flange pressing plate, an inner hexagon screw, a lower die, pins, a pressing plate, bolts, and a lower die Seat, support rod, lower mold base plate, ejector rod, lower ejector rod, upper and lower mold base plate and upper and lower mold bases are first inserted into the holes of the two for positioning by pins, and then fixed and connected by bolts. The flange pressing plate is pressed on the upper mold base through the hexagon socket head screw, the support rod is fixed on the upper surface of the lower mold base backing plate, and a through hole is drilled in the middle of the lower mold base backing plate, and the lower ejector rod is installed in this hole. The upper part of the ejector pin is located in the middle hole of the lower mold base and the lower mold. The forging die disclosed by the present invention has a high position accuracy between the upper and lower mold bases and the backing plates of the upper and lower mold bases. Both the upper mold and the lower mold are Reliable fixation, easy installation and disassembly of support rods, relatively balanced force when closing molds.

Disclosed are mounting means for agricultural tools, for example tillage assemblies, that comprise a resilient element and a horizontal pivot axis. This allows upward and rearward deflection of a tillage blade of the assembly in response to impact with obstacles. Tillage implements comprising the foregoing assemblies are also disclosed. In certain embodiments, the assemblies advantageously allow lateral deflection of at least a support arm of the assembly in response to impact with obstacles, which may be enhanced by providing a pivot means of the assembly with a resilient bushing. The resilient element and / or the resilient bushing may comprise elastomeric materials.

The invention discloses a stair autonomous obstacle crossing wheel, which is mainly characterized in that the starting of a direct current variable frequency motor is controlled through a control component, and each driving wheel is intelligently driven for carrying out alternating rotation in proper time so that the whole stair self obstacle crossing wheel autonomously walks; when an obstacle is met, a relay is controlled by a control component to extend out an electromagnetic push rod until the electromagnetic push rod is in contact with the ground, and in addition, the electromagnetic push rod continuously extends until the whole stair autonomous obstacle crossing wheel is jacked up for anticlockwise turning to cross the obstacle. The stair autonomous obstacle crossing wheel disclosed by the invention has the advantages that an autonomous obstacle crossing function is completely realized, the structure is simple and reasonable, the stress is balanced, better walking flexibility and obstacle crossing function intelligentization are realized, the work stability and the work reliability of the whole stair autonomous obstacle crossing wheel are good, the control mode is simple, the manufacturing cost is low, and the service life is long.

The invention discloses a radiating structure for an independent graphics card of a computer. The radiating structure comprises a mounting structure for the independent graphics card and a radiator. The radiator which is flat integrally is matched with the independent graphics card and is provided with a front surface and a back surface, a heat conduction base is arranged on the front surface of the integrally flat radiator, a main body of the radiator comprises radiating fins, and the radiating fins are parallelly arrayed at intervals. An outward smooth surface of the heat conduction base flatly clings to a GPU (graphics processing unit) chip of the independent graphics card, the back surface of the radiator is in contact with a partition plate surface in a host case of the computer in a parallelly clinging manner, a space of a host of the computer is halved by a partition plate, computer hardware including a mainboard, hard disks, power boxes and a fan are parallelly mounted on a surface or two surfaces of the partition plate or are mounted on the single surface or the two surfaces of the partition plate in a parallelly clinging contact manner, and the independent graphics card is parallel to the partition plate. The invention further discloses the mounting fixing structure for the independent graphics card of the computer. The radiating structure and the mounting fixing structure have the advantages that various independent graphics cards can be compatibly arranged in the ultrathin case, the effective radiating area of the independent graphics card can be enlarged, and the radiating efficiency of the independent graphics card can be enhanced.

The invention relates to a dual-feedback variable-speed constant-frequency wind-driven generator, comprising a chassis of front cabin, a chassis of back cabin, a generator, an accelerating box, a wind wheel, and a controller. The connecting face between the chassis of front cabin and the chassis of back cabin is inclined. The chassis of back cabin is fixed on the tower support. The generator is arranged on the chassis of back cabin. The accelerating box is arranged on the chassis of front cabin. The generator via the coupler is connected with the accelerating box. The accelerating box and the hub of wind wheel are connected via the end cover. The controller is connected with the generator, the accelerating box, the blade of wind wheel, and the main axle. The invention can improve the stability of wind-driven generator. The inclined chassis of cabin can reduce the axial interference of accelerating box and the generator, and stabilize the chassis. The invention also realizes the speed adjustment of variable-speed wind-driven generator, to avoid complex vector calculation.

The invention discloses a pipeline internal inspection robot. The pipeline internal inspection robot comprises a vehicle body with wheels and a lifting frame arranged on the vehicle body. The lifting frame comprises a base connected with the vehicle body, the base is rotationally connected with a connecting rod, and a camera assembly is arranged at the end, opposite to the base, of the connecting rod. The pipeline internal inspection robot is characterized in that the base can slide forwards and backwards relative to the vehicle body; a driving mechanism capable of driving sliding is arranged between the vehicle body and the base; the vehicle body is provided with a linkage part driving the lifting frame to ascend and descend so that the wheels on the vehicle body can be stressed in a more balanced mode. The pipeline internal inspection robot is effectively prevented from inclining forwards or turning over backwards, and continuous and stable work of the pipeline internal inspection robot is guaranteed.

The embodiment of the invention discloses an artificial stone production system, comprising a stirring device, a material distributing machine, a vibrating device and a pressurizing device, wherein the stirring device is used for evenly mixing raw materials; the material distributing machine is used for distributing the materials according to artificial stone textures; the vibrating device is used for vibrating the distributed materials; the pressurizing device is used for pressing the vibrated materials to form a green body; the stirring device, the material distributing machine, the vibrating machine and the pressurizing device are sequentially connected with one another through a conveyer. The artificial stone production system is applied to the field of artificial stone production; the productive task can be finished according to presetting; particularly, high-quality and high-fidelity simulation artificial stone can be prepared; automatic control can be achieved; the artificial stone production system has the characteristics of being high in production efficiency and high in product percent of pass.

The invention provides an energy storage spot-welding locating and clamping device of a stationary blade fan-shaped block welding assembly. The device comprises a base, a press block, a stop pin, a locating block and press plates. The base serves as a main component, is an arc locating surface manufactured according to the structure of the air inlet side of the welding assembly and is used for fixing a supporting piece located on the exhaust side of the welding assembly to the base through cylindrical pins. The press block, the stop pin, the locating block or the press plates are adopted on the inner arc face and the outer arc face of the welding assembly for dual inner arc locating. The clamp structure is compact; all compressing components of the clamping device are connected through screws or pin nuts; the press block and pins can be flexibly adjusted; locating is safe and reliable, and precision is high; operation is convenient and quick; repeated precision is high; the service cycle is long; maintenance is easy; the time for energy storage spot-welding clamping, spot welding and correction is greatly saved; and the production period is shortened. Thermal deformation in the assembly welding process is effectively controlled, and by means of a clamp, the assembly welding quality can be improved, and the reject ratio can be lowered.

The invention discloses a thrombus removing device capable of preventing damage on an inner wall of a blood vessel. The thrombus removing device of the invention comprises an outer support sleeving device and an internal removing device; the outer support sleeving device comprises a metal sleeve and an outer sleeving tube; an infrared detection device is arranged on an end surface of the metal sleeve which faces a cutting device; the internal cleaning device comprises a first thrombus channel, a second thrombus channel and the cutting device; the cutting device comprises blade support strips, blades, a pin roll, an air cylinder, a rubber sleeve and projected strips; an internal removing device of the thrombus removing device supports one side of the inner wall of the blood vessel with the thrombus through the outer support sleeving device before working to prevent the inner wall of the blood vessel from being scratched during a removing process; a motor drives the second thrombus channel to rotate and the blade support stripes expand through the air cylinder; and infrared detection device on the outer support sleeving device can detect an opening position of the blades. The thrombus removing device capable of preventing damage on inner wall of blood vessel can provide convenience to medical staff to control the blades not to go beyond a scratching-proof fillet and guarantees that the inner wall of the blood vessel is not damaged while the vessel is unblocked.

The invention discloses a high-back-pressure seawater hydraulic frictional wear test bed. The test bed comprises a support, a high-pressure bin is installed on the support, a pipe joint is arranged on the high-pressure bin, a high-pressure power source injects high-pressure seawater into the high-pressure bin through the pipe joint, an inclined disk assembly and a plunger cylinder block assembly are arranged in the high-pressure bin, one end of the plunger cylinder block assembly is fixedly connected with a valve sleeve through a suction valve, and the other end of the plunger cylinder block assembly makes contact with the inclined disk assembly through a skid shoe. According to the high-back-pressure seawater hydraulic frictional wear test bed, a plunger and cylinder block friction pair, a skid shoe and inclined disk friction pair and a shaft and bearing bush friction pair are arranged in the high-pressure bin in a concentrated mode, and all the friction pairs move at the same time, and thus can be tested at the same time; high-pressure seawater is injected into the high-pressure bin through the pipe joint, a deep sea pressure environment can be simulated, and the conditions of operation of all the friction pairs in the 2000 m deep sea environment can be tested.

The invention relates to the technical field of solenoid valves, in particular to a hydraulic high-flow high-speed digital valve with a solenoid valve arranged in the middle. The hydraulic high-flow high-speed digital valve comprises a valve body and a valve element arranged in the valve body in a sliding manner; the back end of the valve element is provided with a cylindrical moving armature in a sleeving manner; a fixed armature is arranged in the valve body behind the moving armature; the valve body comprises a front valve body, a back valve body and a spacer bush arranged between the front valve body and the back valve body; the front and back valve bodies are made of magnetic materials; the spacer bush is made of a non-magnetic material; the joint faces of the fixed armature and the moving armature are positioned in a coverage area of the spacer bush; an annular coil block is arranged outside the valve body in a sleeving manner. A solenoid coil is positioned in the middle section of the valve body, and the integral structure is more compact; the position of the fixed armature can be conveniently adjusted, so that a gap between the fixed armature and the moving armature is finely adjusted; taper faces with unequal inclination angles at the joint of the valve element and the valve body ensure the stress balance of the valve element, the sealing effect is improved, and leakage caused by nonuniform abrasion of a sealing face can be avoided.

The invention provides a metal spring leaf in an electronic product and a connecting structure adopting the metal spring leaf, which comprises a metal spring leaf and a PCB. The metal spring leaf comprises a spring leaf body with an elastic back bending structure; a contact end and a welding end are arranged at both ends of the spring leaf body; the welding end is near to the middle part of the spring leaf body; a hole groove is arranged on the PCB; and the metal spring leaf is arranged in the hole groove and welded on the PCB bard through the welding end. As the metal spring leaf has the elastic back bending structure, and the welding end is arranged at the middle part of the elastic back bending structure, the dimension of the metal spring leaf is greatly reduced, and the deformation of the metal spring leaf is reduced. As the metal spring leaf is arranged in the hole groove on the PCB, the exposed part of the metal spring leaf is reduced; therefore, the metal spring leaf can be elastically compressed in the hole groove, and the probability of deformation failure caused by unexpected collision of the metal spring leaf is reduced.

The invention provides a corner self-servo passive and supple hydraulic robot joint. According to the technical scheme of the corner self-servo passive and supple hydraulic robot joint, a valve body (14) is concentrically installed in a cylindrical cavity (32) of a cylinder body; the left end and the right end of the valve body (14) are concentrically provided with two deep groove ball bearings (5); a driving bevel gear (13) is concentrically installed on the shaft shoulder of an output shaft at the right end of the valve body (14); a driven shaft (12) is installed on a right end cover (7); a driven bevel gear (8) is concentrically installed on the driven shaft (12); two connecting rods (9) are fixedly and symmetrically installed at the two ends of the driven shaft (12) through screws; and a driven arm (10) is installed between the other ends of the two connecting rods (9). The corner self-servo passive and supple hydraulic robot joint has the beneficial effects that a fixing stop block can be fixed easily and assembled easily, the output torque of the joint is large, the force borne by the valve body is in balance, displacement is not prone to occurrence, the dynamic characteristic is good, the joint flexibility is good, the response speed is high, and the control precision is high.

The invention discloses an automatic elevating apparatus and method of an aeration tube of a floating aerator, and belongs to the technical fields of water restoration and water treatment. The apparatus comprises a slide rail fixed on a floating aerator floating body, slidable mechanical arms are arranged at the top feet of the slide rail, the bottom foot of every mechanical arm is provided with a slidable aeration branch tube, a rope of a pulley group mechanism pulls a large fixed pulley fixed above the mechanical arm slide rail, the large fixed pulley coaxially drives a small fixed pulley having a certain ratio relative to the large fixed pulley to rotate, and the small fixed pulley controls the top feet of the X-shaped mechanical arms to move apart or close up, so a case that a rising or descending distance of the aeration branch tubes driven by the X-shaped mechanical arms is almost same to a distance of a weight moving closer to the water level is realized, and a gas conveying flexible tube is synchronously retracted or released by a gas conveying tube telescoping mechanism. The apparatus and the method allow the aeration tubes to be positioned in specific positions above the riverbed, reduce the disturbance to riverbed sediments and improve the oxygen charging efficiency.

The invention relates to a double-vane hydraulic self-servo oscillating cylinder. According to the technical scheme, two fixed stoppers (9) are symmetrically fixed on the inner wall of a cylinder body (7). Two vanes (25) are symmetrically fixed on an oscillating output shaft (10). The two vanes (25) and the two fixed stoppers (9) are in staggered arrangement. The valve body (6) and the oil distribution disc (17) are used for oil distribution for end faces. High-pressure oil enters two corresponding work cavities through a high-pressure oil way (16), a radial high-pressure oil way of the cylinder (7), a high-pressure annular oil groove (27) and a high-pressure radial oil passage (23) and a high-pressure radial oil passage (19). Low-pressure oil of the other two work cavities returns through a low-pressure oil distribution oil way (18), a low-pressure radial oil passage (19), a low-pressure annular oil groove (26), a radial low-pressure oil way of the cylinder body (7) and a low-pressure oil way (8). The double-vane hydraulic self-servo oscillating cylinder is small in radial size, good in dynamic property, simple in oil ways, convenient to machine and easy to produce, and stress of the valve body (6) and the oscillating output shaft (10) is balanced.

The invention discloses a four-drill auger miner particularly suitable for mining an ultrathin coal seam and a protective coal seam with the minimum thickness of 0.45 meter and the inclination of 0 to 25 degrees. The four-drill auger miner mainly comprises an explosion-proof motor, a hydraulic coupler, a fine-adjustment hydraulic cylinder, an air duct, a speed reducer, a fine-adjustment device, a frame, a fixing box, drills and a drill pipe, wherein the explosion-proof motor is connected with the speed reducer by the hydraulic coupler; the output shaft of the speed reducer is connected with the drill pipe which is connected with the transmission shaft of the fixing box; the fixing box is provided with four drills which have opposite rotation directions, symmetrically; and the four drills are divided into right rotating drills and left rotating drills which are arranged in pairs, and are driven to move through gear meshing so as to complete cutting. The cutting efficiency and coal capacity of the four-drill auger miner are improved greatly; and the anger miner has balanced stress and stable running in use, and the drills are convenient to maintain after being worn drills. Therefore, the working stability of the complete machine is improved. The four-drill auger miner has the advantages of compact and reasonable structure, high interchangeability and easy maintenance.

The invention provides a vertical shaft impact type crusher. The vertical shaft impact type crusher comprises a base, and a power device, a transmission device, a main shaft assembly, an impeller body, a feeding device, a material distribution device and a vortex crushing cavity which are arranged on the base, wherein the impeller body is rotationally mounted in the vortex crushing cavity and comprises an impeller shaft and a flow channel fixedly connected with the impeller shaft; the power device drives the rotation of the main shaft assembly and the rotation of the impeller shaft through the transmission device; and the feeding device and the material distribution device are mounted above the impeller body so that materials freely fall onto the flow channel of the impeller body. The vertical shaft impact type crusher provided by the technical scheme has a very good crushing effect; and damages to parts of a machine body by the materials are reduced and the service life of the parts of the machine body is prolonged.