49results about How to "Smooth descent" patented technology

The invention discloses a system for differential recovery of potential energy of a boom of an oil liquid hybrid power excavating machine. The system comprises a variable capacity pump, a multi-channel valve, a boom cylinder, an operating handle, a controller, a hydraulic control reversing valve, a hydraulic control reversing and throttling valve, a hydraulic control unloading valve, an energy accumulator, an electro-hydraulic proportional valve and a one-way valve. The controller is used for controlling the electro-hydraulic proportional valve and the variable capacity pump according to pressure at an outlet of the variable capacity pump and a pressure signal of the energy accumulator, thereby solving the flow distribution problem of the energy accumulator and the variable capacity pump. The energy accumulator is an energy storage element which can transform descending kinetic energy and potential energy of the boom to hydraulic energy and reasonably distribute the energy for a main power source and an auxiliary power source, and a working device is driven by the pump-energy accumulator. The system can avoid the waste of a large amount of the descending kinetic energy of the boom, reduce the energy transformation link, enable an engine to stably work in a high-efficient fuel oil region, improve the fuel coil economy of the excavating machine and reduce the emission of the system.

The invention provides a lifting hand-pushing van, comprising a vertical frame which includes an enclosed frame formed by hollow pipes; the bottom of the frame is provided with a walking wheel; the vertical frame is connected with an object arranging frame in a sliding way; a lifting hoisting mechanism is arranged between the upper part of the vertical frame and the object arranging frame; the lifting hoisting mechanism consists of a pulley block, a traction rope, a mainshaft and a reverse rotary self-locking device. The invention is characterized in that the traction rope is a chain; the last crown block of the pulley block is a drive chain wheel which is fixedly connected with the mainshaft which is connected with a power source by the reverse rotary self-locking device; the invention also comprises a chain tensioning and intake mechanism consisting of a first cable wire, a first guide wheel, a first movable wheel and a first pulling spring section, and a backing tensile stabilizing mechanism consisting of a second cable wire, a second guide wheel, a second movable wheel and a second pulling spring section; the invention has the advantages of good strength of chain, being not easy to be broken or be disconnected from the wheel, reliable operation, and high safety.

An escape device (10) including a cable (18), a rotatable cable dispensing assembly (22) from which the cable (18) is dispensed under load, a braking mechanism (28) operatively connected to the rotatable cable dispensing assembly (22), whereby a braking response of the braking mechanism (18) is proportional to the rate at which cable (18) is dispensed from the rotatable cable dispensing assembly (22).

The invention provides a composite fixture which comprises a vertical plate-shaped fixture body and at least one clamping device assembly. The clamping device assembly comprises two gripper jaws and cylinder driving systems arranged at the tail ends of the two gripper jaws; each cylinder driving system comprises a housing and a cylinder arranged in the housing, and a piston rod of the cylinder is connected with one gripper jaw so as to drive the gripper jaw to carry out relative movement; and the clamping device assembly is fixedly arranged on the fixture body and allows the two gripper jaws to extend out of the edge of the fixture body so as to clamp an object. When the composite fixture is used for setting a sand core, the sand core can be smoothly placed into a sand mold cavity, so tilting of the sand core and colliding between the sand core and a sand mold in the process of placing are avoided, integrality of the sand core and the sand mold cavity is maintained, and the quality of a casting is improved; furthermore, automatic core setting by using the composite fixture enables production efficiency to be enhanced and the level of manufacture technology for railway vehicles to be comprehensively elevated.

The invention discloses a free diving type deep sea turbulence profile instrument, comprising a pressure resistant cabin, a protective side cover, a data acquisition device, a battery pack, a communication device, a supporting column, a floating body, and a damping device. The front end of the pressure resistant cabin is provided with a front end cover. The front end cover is provided with a sensor mounting position, and also fixedly mounted with a front protective frame. The data acquisition device is mounted in the front end cover. A rear end cover is arranged behind the pressure resistant cabin. The front end cover and the rear end cover are connected to the pressure resistant cabin through screw threads. The lower end of the rear end cover is fixedly mounted with a battery frame. The battery pack is fixedly mounted on the battery frame. The free diving type deep sea turbulence profile instrument has the advantages that a segmented structure in which a long cylindrical pressure tank, the floating body, and a damping device are arranged in order from bottom to top is adopted, so that the profile instrument with the center of gravity located below can still dive stably in a vertical direction under the condition of ocean undercurrent interference and the like, and the dive speed can be configured according to needs.

The invention provides a wind-resistance roller shutter drawing mechanism, belonging to the technical field of machinery and solving the problem that the traditional roller shutter is not smooth to slip due to the effect of wind. A wind-resistance roller shutter of the wind-resistance roller shutter drawing mechanism comprises curtain cloth, a window cover, a reelpipe, side rails and a lower rod, wherein the upper end and the lower end of each side rail are respectively provided with a cloth-guiding top plug and a side rail bottom plug; the wind-resistance roller shutter drawing mechanism is arranged in the side rails and comprises a movable pulley bracket, a drawing part and an elastic compensating part, wherein the upper end of the compensating part is connected with each cloth-guiding top plug, the movable pulley bracket is suspended at the lower end of the compensating part, one end of the drawing part is connected with the reelpipe, and the other end of the drawing part penetrates through the cloth-guiding top plugs, extends downwards to stride pulleys on the side rail bottom plugs, extends upwards to stride a pulley on the movable pulley bracket, then extends downwards to stride other pulleys on the side rail bottom plugs and finally extends in an obliquely upward manner to be fixed on the lower rod. The wind-resistance roller shutter drawing mechanism disclosed by the invention has the advantages of simple structure, stability, reliability and good guiding property.

A radiator core assembly machine comprises a window, an operator, a support lever, box doors, supporting feet, and an assembly host, the window is embedded at the upper end of the front surface of theassembly host, the lower surface of the operator is welded to the upper end of the support lever, the lower end of that support lever is hinged to the right side of the front surface of the assemblyhost, the two box doors are arranged at the lower end of the front surface of the assembly host, the upper ends of the supporting feet are weld to the lower surface of the assembly host, the assemblyhost is electrically connected with the operator through a wire, the material in the assembling process is flattened by a flattening mechanism, the assembled radiator is relatively flat, and the use performance of the radiator is ensured. A nested mechanism is used for assembly and drives a transmission mechanism to run at the same time, so that a blast cooling mechanism generates wind energy, theassembly process is cooled, the material is prevented from being heated and damaged, and a reinforcing mechanism makes the assembly process firmer.

The invention relates to a hydrologic monitoring device. The device includes a first drum body and a second drum body which are cylindrical and are arranged side by side; a unidirectional unwinding mechanism is fixedly arranged at the bottom of the first drum body, a floating ball is arranged in the second drum body, the diameter of the floating ball is smaller than the inner diameter of the second drum body, and multiple water inlets are formed in the lower portions of the first drum body and second drum body; a protection device is arranged at the exterior of each water inlet, and the unidirectional unwinding mechanism includes a housing, a rotating shaft arranged in the housing and a first winding wheel fixedly arranged on the rotating shaft. The two ends of the rotating shaft are connected to the housing through bearings, a ratchet wheel is also fixedly arranged on the rotating shaft, a pawl matched with the ratchet wheel is arranged in the housing, and a first pull line is arranged on the first winding wheel. A first pulley is arranged on the top of the first drum body, a second pulley is arranged on the top of the second drum body, and the top of the first pull line sequentially bypasses the first pulley and the second pulley to be connected to the top of the floating ball.

The invention discloses a driveless air water intake device. The device comprises an air inlet device, a condensation sleeve and a water collecting tank which are sequentially connected from top to bottom, the condensation sleeve comprises a spiral tube, an exhaust pipe placed inside the spiral tube, a sealing condensation layer wrapped around the tube wall of the exhaust pipe and a plurality of air outlets formed in the tube wall of the spiral tube; the upper end of the spiral tube is connected to the air inlet device, and the lower end is connected to the water collecting tank; the lower endof the exhaust pipe is in communication with the spiral tube, the upper end of the exhaust pipe is sealed in a tapered structure with a tip end upward, the upper end of the exhaust pipe is provided with a plurality of exhaust branch pipes extending outward from the pipe walls and gradually expanding, and the plurality of exhaust branch pipes are correspondingly connected to the plurality of air outlets one by one; the air outlets are of triangular structures, and one tip end of a triangle is upward. The device can effectively reduce the air resistance, thereby reducing the pressure drop, increase the air intake amount, and improve the efficiency of taking water from the air.

The invention discloses a combined water retaining device for water conservancy construction, comprising a group of device bases; left risers, right risers and middle risers which are arranged on the device bases; a group of positioning drill rods respectively penetrates through two ends of the device bases; slide tracks are arranged on the left sides of the left vertical slab and slide rails are arranged on the right sides of the right risers; the upper parts of the right risers, the middle risers and the middle risers are connected with extension risers; the tops of the extension risers are respectively connected with top cover plates; middle water retaining plates are respectively arranged among the left risers, the middle risers and the right risers; gap water retaining plates are arranged between the left risers and the right risers adjacent to the left risers. The combined water retaining device is simplified in structure and convenient to disassemble and assemble; water flow is step by step cut off through combined installation, and thus the water retaining device has the good cut-off effect; after construction completion, the entire device can be withdrawn and reused, and thus the water conservancy construction cost is reduced.

The invention relates to a hydrological monitoring device, which comprises a cylindrical first cylinder and a second cylinder arranged side by side, a one-way pay-off mechanism is fixedly arranged at the bottom of the first cylinder, and a floating ball is arranged in the second cylinder. The diameter of the floating ball is smaller than the inner diameter of the second cylinder. The first cylinder and the lower part of the second cylinder are provided with a plurality of water inlets, and the outside of the water inlets is provided with a protective device. The one-way pay-off mechanism includes a shell and a The rotating shaft and the first winding wheel fixedly arranged on the rotating shaft, both ends of the rotating shaft are connected with the casing through bearings, a ratchet wheel is fixedly arranged on the rotating shaft, and a pawl matching the ratchet wheel is arranged inside the casing. The first pulley is set on the first pulley; the first pulley is set on the top of the first cylinder, the second pulley is set on the top of the second cylinder, and the top of the first pulley goes around the first pulley, the second pulley and the floating ball in turn. top connection.

The utility model discloses a rope rolling rack and a detachable portal crane. The detachable portal crane comprises a three-dimensional frame formed by detachably connecting multiple blocks together, a traveling crane arranged on the upper part of the three-dimensional frame, and a loading and unloading device used for loading and unloading materials, and also comprises a rope rolling rack arranged at the bottom of the three-dimensional frame, a rope arrangement wheel component arranged on the top of the three-dimensional frame, first traction equipment, second traction equipment and a driving device which drives the traveling crane to reciprocate, wherein the second traction equipment is connected with one end of the loading and unloading device through a second traction rope; the loading and unloading device comprises a movable door; an inner wall of the movable door is connected with the first traction equipment through a first traction rope; the traveling crane comprises a lifting beam and a lifting box arranged on the lifting beam; and an insertion structure for fastening and loosening the loading and unloading device is formed in the lifting box. The portal crane disclosed by the utility model can be detached and moved at any time, is suitable for field operation and contributes to transportation of mechanical equipment.

The invention relates to a portable liquid level meter for a sewage station. The portable liquid level meter comprises a handle, a gauge rack, a gauge shaft, a measuring gauge, a passive self-locking bearing, a rocking handle, a sludge scraper and a floater, wherein the handle is arranged at one end of the gauge rack, the passive self-locking bearing is fixed to the outside of the gauge rack through a bearing cover, one end of the gauge shaft is connected with the inner side of the passive end of the passive self-locking bearing, the measuring gauge is wound at the other end of the gauge shaft, and the free end of the measuring gauge is movably connected with the floater through the sludge scraper. The rocking handle is connected with the inner side of the active end of the passive self-locking bearing. The portable liquid level meter is convenient to carry, is used or put away at any time, adapts to various types of water, is not eroded, is not affected by floating bubbles and can be automatically cleaned, the measuring gauge is passively self-locked during measurement, and the situation of automatic descending of the floater does not occur.

The invention relates to the technical field of ship sectioned transportation and discloses a production-line ground conveying pre-jacking system and a load control method thereof. The system comprises an oil cylinder, a pressure sensor, a servo valve and a reversing valve. The pressure sensor is fixedly mounted in a rodless cavity of the oil cylinder; an oil outlet of a rod cavity of the oil cylinder communicates with an oil inlet of one end of the reversing valve; and an oil inlet of the other end of the reversing valve communicates with an oil outlet of the servo valve. A plurality of ground conveying trolleys which are distributed at the bottom of a product are set in a no-load jacking state, when the pressure reaches a pre-set pressure value of 2MPa, the servo valve is automatically closed, and the oil cylinder stops pre-jacking action. Before product jacking, the system provides pre-jacking for the product, full contact of a balance support and the bottom surface of the product is guaranteed, the good synchronous foundation is built for subsequent synchronous loaded jacking, the advantages of being convenient to control and good in extendibility, and the working efficiency and the operation safety of ship sectioned transportation are greatly improved.

The invention provides a rice quantitative packaging device, which relates to the field of rice packaging. The rice quantitative packaging device includes a feeding hopper, a first processing mechanism is arranged below the feeding hopper, the upper end of the first processing mechanism is fixedly connected with the feeding hopper, and a second processing mechanism is arranged below the first processing mechanism , the upper end of the second processing mechanism is fixedly connected with the lower end of the first processing mechanism. The rice quantitative packaging device, by setting the feeding hopper, the first processing mechanism and the second processing mechanism, the rice can enter the interior of the device through the feeding hopper, the rice can be rotated and descended through the spiral blade, and can be sent to the small net through the ventilation pipe. The inside of the ring is inflated to achieve the effect of cleaning the impurities in the rice when packaging the rice, which solves the problem that the rice packaging device in the prior art does not handle the impurities in the rice thoroughly when packaging the rice. There is a quality problem with the rice.

The invention discloses an efficient pit digging automation device applied to farmland soil. The efficient pit digging automation device comprises pit fixing rods which are symmetrically distributed, a pit digging part arranged between the two pit fixing rods and reciprocating in the length direction of the pit fixing rods and a pair of deep pit feeding parts for driving the pit digging part to move downwards for deep digging, wherein the two pit fixing rods are in an expanding-unfolding state and a closing-folding state on the horizontal plane, the pit digging part and the two pit fixing rods move synchronously, and the deep pit feeding parts are mounted below the bottom surfaces of the pit fixing rods. According to the efficient pit digging automation device applied to the farmland soil, the pit digging part between the pit fixing rods is started to alternately break and shovel soil in a reciprocating mode to form a rectangular pit, then the deep pit feeding parts below the pit fixing rods are started to drive the pit digging part to move downwards by a section, then the deep pit feeding parts continue to alternately break the soil and shovel the soil to form a deeper rectangular pit, the automatic pit digging efficiency of the device is high, manpower and time are saved, and orderly management of agricultural work is facilitated.

The invention discloses a camera suspension device for aerial photography unmanned aerial vehicle, the structure includes rotating fan blades, drive motor, Connecting frame, camera suspension mainframe, A support frame, that rotate blades bee welded to the drive motor and mechanically connected, A drive motor is fixedly mounted at the end of the connecting frame, At that same time, the work of thesmooth sliding mechanism make the camera more smooth in the course of lifting and lowering, and prevents the camera from get stuck; Through the rotation of the rotating mechanism, the whole image pickup mechanism is rotated by 360 degrees, so that the camera rotates by 360 degrees and shoots in all directions, so that the difficult space to be photographed can be photographed, and the process ofthe rotation of the image pickup mechanism is damped by the vibration damping mechanism, so as to ensure that the image pickup mechanism can be reduced to rotate normally.

The invention discloses a brake cable releasing mechanism. The brake cable releasing mechanism comprises a shifting assembly installed on a supporting base and used for controlling position shift, and the shifting assembly comprises a handle, a rotary shaft matched with the handle and a rotary block connected with the rotary shaft. The shifting assembly further comprises a slide shaft used for being connected with a brake cable, a special-shaped open groove is formed in the rotary block, and the slide shaft is sleeved with the special-shaped open groove. According to the brake cable releasing mechanism, when the handle is downwards pulled or upwards pushed, the brake cable can be released, and smooth lifting of a medical tower crane can be achieved.

The invention relates to a feeder used for medical care. The feeder comprises baffle boards, a fixing rack, fixing belts, a protection pad, a food outlet, an anti-sticking layer and a slot. The bottom ends of the baffle boards are equipped with feeding buckets. The insides of the feeding buckets are provided with adjusting shafts. The fixing rack is fixed at the bottom ends of the adjusting shafts. A feeder body is installed below the fixing rack. The fixing belts are inlaid on two sides of the feeder body. The interior of the feeder body is provided with a feeding pipeline. The protection pad is inlaid on the outer wall of the feeder body. The food outlet is installed in the bottom end of the feeder body. Two sides of the food outlet are fixed with limiting boards. The feeder used for medical care has the following beneficial effects: during application, outsides of the feeding buckets are blocked through the baffle boards in order to prevent food from overflowing; additionally, insides of the feeding buckets are in the structures of funnels so that food can automatically gather towards the bottom.

The invention provides a curtain capable of being automatically cleaned and belongs to the technical field of curtains. The curtain comprises winding drums and a cloth curtain wound on the winding drums, wherein two ends of the winding drums are arranged on a wall body through mounting brackets; in addition, one end of one winding drum is connected with a motor through a rotating shaft; a dust cleaning assembly is arranged below the winding drums and comprises two dust cleaning plates for clamping the cloth curtain at the middle part; a driving component for controlling the two dust cleaning plates to be close to each other is rotationally arranged on one side of each bracket; inserting rods are fixedly connected to the end parts of the two dust cleaning plates; each driving component comprises a rotary table and a half gear which is fixedly arranged on one side of the rotary table; and a rotating drum which is rotationally matched with the corresponding bracket is fixedly connected tothe other side of each rotary table. The embodiment of the invention has the advantages of simple structure and good dust cleaning effect; and meanwhile, the condition that people repeatedly climb when cleaning the curtain is avoided, potential safety hazards are eliminated and the cleaning time of the curtain is prolonged.

The invention discloses metal bending equipment of an automatic discharging mechanism for metal bending. The metal bending equipment comprises a bending main machine, a discharging mechanism, a material guiding mechanism and a forming block, one end of an upper stop block and one end of a lower push block are fixedly connected with the output end of a long-strip air cylinder in a threaded mode, the upper stop block is located at the upper end of the lower push block, and automatic discharging of the forming block is achieved. The manual discharging time of an operator is shortened, and the working efficiency of the metal bending equipment is improved. The lower end of a roller is lower than the lower end of the forming block. After the forming block is pushed, the lower end of the formingblock impacts the roller, the forming block changes the direction and moves downwards obliquely under the action of self gravity and residual inertia, and first-time direction-changing discharging ofthe forming block is achieved. The inclined falling point of the bottom end of the forming block is located in the middle of the upper end of a fixing piece, when the forming block falling from a material guiding box impacts the fixing piece, the material guiding box has a certain inclination angle, the buffering effect of a second buffering spring wire is matched, so that the forming block changes the direction for the second time, discharging is slow, and manual operation is not needed.

The invention discloses a portable underground water fixed-depth sampling device. The device comprises a base; a fixing frame is arranged on the outer wall of the top of the base; a rotating pipe is rotatably arranged on the fixing frame; a hose is connected to the outer wall of the rotating pipe in a wound mode; one end of the hose is communicated with the rotating pipe; a sampling mechanism is arranged at the other end of the hose; an adjusting wheel is arranged on the outer wall of one side of the rotating pipe; an air suction cylinder is arranged on the outer wall of the rotating pipe; theair suction cylinder is communicated with the rotating pipe through a communicating pipe; a control valve is arranged on the outer wall of the communicating pipe; a limiting mechanism is arranged onthe fixing frame; a supporting mechanism is arranged on the base; the sampling mechanism comprises a sampling barrel, a sliding rod, a piston plate, a collecting barrel and a rubber pad; and a mounting opening is formed in the outer wall of the top of the sampling barrel. In the process of moving the sampling barrel up and down, underground water of other depths is effectively prevented from immersing into the sampling barrel, so that fixed-depth sampling is effectively achieved, and a sampling effect is better.

The invention provides a brick stack feeding device and a destacker using the brick stack feeding device. The brick stack feeding device includes a main frame, a first oil cylinder, a lifting frame and a guide plate group, the first oil cylinder is arranged in the main frame, the output end of the first oil cylinder is connected with the lifting frame, the guide plate group includes a plurality ofsets of guide plates, the multiple sets of guide plates are arranged in the main frame in an inclined manner, and a prism-frustum-shaped containing cavity with the small top and the large bottom is formed among the multiple sets of guide plates. The unstacker using the brick stack feeding device includes a large frame, a walking trolley, a destacker gripper and the brick stack feeding device, thewalking trolley is connected to the destacker gripper, the walking trolley can walk on the large frame, and the brick stack feeding device is arranged below the large frame. By means of the destacker, in the feeding process of sintered bricks to be disassembled, all layers of sintered bricks are neatened at the same time, the lower-layer sintered bricks needing to be disassembled are clamped, thelower-layer sintered bricks keep the original state when upper-layer sintered bricks are subjected to seam jointing and clamping, good and reliable clamping of the sintered bricks can be achieved, and the destacking process of sintered brick stacks is completed.

The invention discloses a vertical forming cabinet. The vertical forming cabinet comprises a cabinet body, layer board mechanisms layered in the cabinet body layer by layer, and counterweight mechanisms which are set in the cabinet body to offset the self-weight of the layer board mechanisms. Each counterweight mechanism comprises a hanging wheel assembly, a limit guide assembly arranged below thehanging wheel assembly, and a weight piece which slidingly matches the limit guide assembly. Each weight piece is connected with the corresponding layer board mechanism through a pulling rope wound on a hanging wheel assembly. According to the vertical forming cabinet designed in the structure, each limit guide assembly is arranged in a counterweight mechanism, which makes a weight piece more stable during the rising or lowering process; mutual collision between adjacent weight pieces or entanglement between adjacent pulling ropes can be effectively avoided; and the reliability of the vertical forming cabinet is effectively improved.

The invention discloses a reciprocating type pit digging method for farmland land. The reciprocating type pit digging method for the farmland land comprises the following steps of firstly unfolding and fixing pit fixing rods, then starting a gear motor to drive a lead screw to rotate so as to drive pit digging parts to move forwards as a whole, then carrying out ground breaking operation first by a plurality of soil cutting blades, then starting a servo motor to drive soil digging shovels and the soil cutting blades to be switched for use, then reversing the gear motor to drive the pit digging parts to move back, then carrying out shoveled soil conveying operation through the soil digging shovels, then starting a forward and reverse rotation motor to drive a feeding rod located below to move downwards, then driving the pit digging parts to move downwards as a whole, and continuing to carry out soil breaking and soil digging operation until a deep rectangular pit is formed. According to the reciprocating type pit digging method for the farmland land, the pit digging parts between the pit fixing rods are started to alternately break soil and shovel soil in a reciprocating mode to form the rectangular pit, then deep pit feeding parts below the pit fixing rods are started to drive the pit digging parts to move downwards by a section, then soil breaking and soil shoveling continue alternately to form a deeper rectangular pit, the automatic pit digging efficiency of the reciprocating type pit digging method for the farmland land is high, and manpower and time are saved.

The invention relates to an energy-saving, efficient and low-noise press hydraulic system. The system comprises an oil tank, a first oil suction filter, a first direct-acting overflow valve, a first pressure sensor, a three-position four-way electro-hydraulic reversing valve, a first one-way valve, a first two-position two-way electromagnetic ball valve, an external control one-way balance valve, a first throttling hole, a movable plate driving long-stroke hydraulic cylinder, a movable plate driving hydraulic cylinder, a second one-way valve, a first pressure gauge, an internal gear pump, an AC servo motor and a first coupling, a second pressure sensor, a second throttling hole, a second two-position two-way electromagnetic ball valve, a second oil suction filter, a three-phase asynchronous motor, a second coupler, a constant-pressure variable plunger pump, a second pressure gauge, an electromagnetic overflow valve, a third one-way valve, a three-position four-way electromagnetic reversing valve, a double one-way throttling valve, a two-way hydraulic lock, a second direct-acting overflow valve and a short-stroke pressurizing hydraulic cylinder. According to the system, the manufacturing difficulty is effectively reduced, the manufacturing cost is greatly reduced, the efficiency is high, the heat is little, and the noise is low.

The invention discloses a pile pulling device and a pile pulling construction method thereof. There are multiple groups of claws on the pile device which are driven by the oil cylinder and can protrude toward the center of the pipe to form a plurality of claws that support or cut off the waste piles. There are several alloy teeth on the inner surface of the claws. The solenoid valve and oil pipe are connected to the oil pump and oil tank on the combined power pile machine; there are multiple high-pressure water nozzles at the bottom of the sleeve type pile extractor, and the high-pressure water nozzles are connected to the combined power hole forming machine through the solenoid valve and high-pressure water pipe. The pile driver is connected with the water pump of the water source; the oil cylinder is also provided with a distance sensor for detecting the downward elongation of the piston rod, and the distance sensor is electrically connected with the controller. The convex column is accurate and reliable for the bottom of the waste pile, the construction noise is small, and the waste pile is pulled out after one-time rotation or cutting, saving time and effort, the construction period is short, and the construction efficiency is high.

The invention provides a wind-resistance roller shutter drawing mechanism, belonging to the technical field of machinery and solving the problem that the traditional roller shutter is not smooth to slip due to the effect of wind. A wind-resistance roller shutter of the wind-resistance roller shutter drawing mechanism comprises curtain cloth, a window cover, a reelpipe, side rails and a lower rod, wherein the upper end and the lower end of each side rail are respectively provided with a cloth-guiding top plug and a side rail bottom plug; the wind-resistance roller shutter drawing mechanism is arranged in the side rails and comprises a movable pulley bracket, a drawing part and an elastic compensating part, wherein the upper end of the compensating part is connected with each cloth-guiding top plug, the movable pulley bracket is suspended at the lower end of the compensating part, one end of the drawing part is connected with the reelpipe, and the other end of the drawing part penetrates through the cloth-guiding top plugs, extends downwards to stride pulleys on the side rail bottom plugs, extends upwards to stride a pulley on the movable pulley bracket, then extends downwards to stride other pulleys on the side rail bottom plugs and finally extends in an obliquely upward manner to be fixed on the lower rod. The wind-resistance roller shutter drawing mechanism disclosed by the invention has the advantages of simple structure, stability, reliability and good guiding property.