|
IPC classes for russian patent Fluid operated hammer (RU 2517290):
Another patents in same IPC classes:
 Deep water pile driver / 2498016
Driver comprises an anvil block, which is installed in an open frame and reciprocally moves by a hydraulic system, being in contact with water. A stem of a piston is placed in the piston cylinder and is attached by one end to the anvil block via a connecting mechanism. At the same time an outer source of hydraulic capacity is applied with a hydraulic chain on board. The connecting mechanism creates a connection between the piston stem and the anvil block as capable of transition, substantially, between a stiff lifting connection and substantially a soft connection for impact, preventing loss of stability with the piston stem, when the anvil block makes a strike in the extreme lower point. One version of realisation of the connecting mechanism includes a hollow body, which comprises opposite longitudinal slots, a rod sliding in the hollow body, which is connected in a sliding manner by a pin in one end of the opposite slots and rigidly connects by a pin in the other end of opposite slots to the anvil block, with a spring in the hollow body, creating a displacing action for pushing of the rod to the anvil block.
 Hydraulic shock machine / 2495991
Machine includes case, striker, forward stroke chamber, reverse stroke chamber, and additional chamber in the case, work fluid inlet and discharge ducts between case and striker, control duct and additional duct, tool, work fluid supply, accumulator, hydraulic distribution valve connecting forward stroke chamber either with work fluid supply or with drain to a tank; control chamber of hydraulic distribution valve is permanently connected via control duct to additional chamber, and distribution valve slide is spring-loaded by a load equal to force in control chamber of hydraulic distribution valve at work fluid pressure equal to P3 preset value. Forward stroke chamber is connected via hydraulic distribution valve to work fluid supply, accumulator and reverse stroke chamber by additional duct via reverse valve when strike is delayed and the system reaches preset P3 pressure value before forward stroke of striker, or by additional duct via reverse valve and by work fluid inlet and discharge duct from forward stroke chamber when striker starts forward stroke. Additional chamber is connected to work fluid supply, accumulator and reverse stroke chamber at the end of reverse stroke of striker, and to drain to a tank at the end of forward stroke of striker. Case, striker and work fluid inlet and discharge duct of forward stroke chamber can form closed circuit of work fluid in forward stroke chamber at the end of reverse stroke of striker.
 Adjustable impact machine / 2476644
Adjustable impact machine includes a housing, a hammer, chamber of forward and backward stroke, a working tool and a control device containing a spool valve and a stock interacting with it, a water motor, an exhaust nozzle, a control nozzle, a turning spring, a throttle and a working medium source. Spool valve is of rotating type, and a shaft is used as stock, on which spool valve, water motor and turning spring operating for closing of spool valve at absence of action of control pulse Pcontr of working medium pressure on the water motor from the control nozzle are installed. Exhaust nozzle is connected via outlet and inlet holes of spool valve at its open position to backward-stroke chamber and through the above throttle to the working medium source; at that, exhaust nozzle and control nozzle are oriented to the water motor with possibility of the spool valve opening. Its housing is equipped with a control chamber, and control device is equipped with a vacuum ejector, a check valve and a vacuum control connected to the forward-stroke chamber. Control chamber is connected to control nozzle, and through backward-stroke chamber in upper position of the hammer and the above throttle to the working medium source and through the inlet and outlet holes of the spool valve, vacuum ejector and check valve to forward-stroke chamber, which is made in the form of a vacuum spring.
 Impact device / 2443863
In the impact device a distribution valve comprises a body with a three-staged sleeve that moves in it, the first step of which, least in diameter, is arranged at one end of the sleeve, is permanently placed in an insulated cavity, communicated with a discharge line, and the third stage, largest in diameter, arranged at the opposite end of the sleeve, is coupled with the inner side surface of the case, which near the end of the specified stage has a circular bore, communicated with the discharge line, and is equipped with a circular ledge for periodic contact with a sealing belt at the end of the third stage. The inner cavity of the sleeve that is open at the side of the third stage end by means of radial holes in the wall and the circular bore at the external side surface of the second stage periodically communicates with the circular bore inside the valve body connected to the drain line, and using holes in the wall of the first stage it continuously communicates with the cavity formed by the inner bore of the body, the external side surface of first stage and the end surface of the second stage. In the valve body there is a circular bore, which forms a control cavity together with the external surface of the third stage and the circular ledge of the second stage, and by means of a check valve and a pilot slide valve it communicates with the upper coaxial recess in the chamber of the device travel at one position, and with the drain line - at the other position of the specified slide valve.
 Pneumatic percussion machine to drive tools into soil / 2440460
Invention comprises a percussion mass, a guide unit of the percussion mass, a unit of percussion mass lifting, comprising a body, in the cavity of which there is a distributing device, an intermediate guide bushing (hereinafter - a bushing) and a working chamber. At the same time the bushing is placed between the body of the lifting unit and the guide unit and has a circular ledge on the inner surface and a limiter of the reverse motion of the percussion mass, and also holes for supply of compressed air into the working chamber. At the same time the latter is formed by an elastic circular valve installed in the circular groove on the external surface of the front part of the percussion mass, the inner surface of the bushing and the end of the stepped rod, which is a stepped tail of the tool. The distributing device is made in the form of an elastic circular cut-off valve installed in the circular groove on the outer surface of the bushing, and the body of the lifting unit has a channel for inlet of compressed air into the lifting unit body cavity and into the working chamber. Both valves are installed with the possibility of interaction with inner surfaces of the bushing and the lifting unit body.
 Pneumatic impact device for driving lengthy elements into soil / 2401910
Device has a striker at working end, impact mass at the opposite end, guide unit for moving of impact mass up and down, lifting unit. Lifting unit has a frame, at side of which there are holes arranged - inlet and outlet ones to air line. Inside body there are pneumatic chambers - accumulating one and working one, arranged with the possibility for piston under the weight to enter it, and distributing element in the centre of body in the form of stem, where valve is located, which closes exhaust hole between working and accumulating chambers, which is located in central upper part of body. The difference of proposed device is availability of additional damper and control pneumatic chambers, arranged one over the other - damper one is higher, control one is below, and availability of partition in damper chamber, which divides chamber into upper and lower parts. Partition has a vertical channel for passage of stem and connection of damper chamber parts over and under partition. The difference is also availability of two pistons: upper and lower ones, with arrangement of the lower one under damper chamber, upper one - under accumulating chamber.
 Impact-effect device / 2354828
Proposed device is designed for impact destruction of thick rocks and other materials, pile driving, soil compacting etc. and comprises a casing to house piston-striker, hydro pneumatic accumulator, two-position pressure control slide valve, two cylindrical two-position valves with control pistons. The control piston of every valve represents a two-stage cylindrical rod, the smaller stage end of which faces the valve to form, along with the casing, the first circular chamber constricted by the said smaller stage end and stem and permanently communicated with the pressure line, the second circular chamber constricted by the larger stage end and smaller stage side surface permanently communicated with the drain line and the piston control chamber, alternately communicated with pressure and drain lines, constricted by the casing and the larger stage free end face. The larger stage sidewall features a circular groove arranged so that the isolated chamber, constricted by the said groove and casing, communicates with the second chamber only in case the valve is closed, that is, it is in contact with the casing bore ledge. The hydraulic control slide valve represents a cylindrical plunger moving the casing with one its smooth end, its diametre being equal to that of the plunger, in permanently located in the end face chamber communicated with the rear coaxial groove of the working stroke chamber. The opposite end represents three-stage cylindrical rod with its diametre increasing towards the plunger and its smaller stage is permanently in the said end face chamber communicated with the front coaxial groove of the working stroke chamber. Two other stages make, along with the casing, circular chambers with diametre smaller than and equal to the plunger permanently communicated with the drain and pressure lines.
 / 2347037
 / 2333317
 / 2333316
 / 2250305
 / 2252299
 / 2260121
 / 2265721
 / 2310723
 / 2311532
 / 2312952
 / 2329356
/ 2333316
/ 2333317
|
FIELD: machine building.
SUBSTANCE: pile driving hammer comprises tubular body, impact body, impact body lift two hydraulic cylinders, fluid pressure control valve, pressure and discharge fluid lines. Two lift-drop devices are arranged at hydraulic cylinder rod ends and equipped with metal shields. Two proximity sensors are arranged at tubular body to interact with metal shields. Hydraulic cylinder piston ends make a closed working fluid chamber communicated via pipes while fluid pressure control valve interacts with cylinder rod ends only.
EFFECT: accelerated fall of impact mass approximating to free fall velocity, replace ability, lower material input, simplified design.
6 dwg
The present invention relates to a construction machine for driving into the soil piles, steel pipe, sheet piling and other precast elements.
Known pile hammer comprising a tubular housing, a percussion mass with Central blind hole, the pressure and drain lines with batteries, valve, single cylinder with a rod connected with the impact mass [1].
Hammer has the following disadvantages: complex structure of the shock mass, relatively slow speed, the need for batteries having a single cylinder, a rod which is connected with the impact mass.
The closest technical solution is a hammer "Stark" [2]having a tubular casing, a cylindrical drum weight with the top flange and two hydraulic cylinders with rods.
The main disadvantages of this hammer are some reduction in the velocity of the shock mass during the fall because of the slowdown during the discharge of oil and the lack of shift shock the masses.
The objective of the invention is to obtain maximum falling velocity of the shock mass corresponding to the speed of free fall, providing an acceptable drop height for any given impact energy, providing shift shock weight, minimum power consumption in one cycle impact, simplify the design accounts for the elimination of batteries.
The problem is solved in that the hydraulic hammer includes a tubular casing, a removable cylindrical drum weight with the annular recess posted with the possibility of reciprocating movement along the tubular housing, the striker plate with shock absorber, two hydraulic cylinders at the ends of the rods are pivoted lifting and dropping device with metal screens, with the piston cavity they are connected by a short pipe and the rod end is connected by tubing to the humidifier, with electro-hydraulic control.
Figure 1 shows a General view of the hammer; figure 2 - impact mass; figure 3 - lifting and discharging mechanism; figure 4 is a hydraulic circuit breaker with electrorefining; figure 5 - wiring; 6 - disable disables the lock.
Hydraulic hammer includes a tubular housing 1, the impact of mass 2, the striker plate with damper 3, two hoisting-and-discharging device 4 screens 5, 6, the hydraulic cylinders 7 and 8, valve 9 with electro-hydraulic control, two non-contact sensor 10, the control relay 11.
The tubular body 1 has diametrically spaced longitudinal slots 12, the left and right of which is fixed guide parts 13 with the switching-off of the lugs 14 and 15, and disables the stop 15 may take the working and idle position.
Below about which of iesi 12 on the tubular body 1 has two spring-loaded including the stop 16, the bracket 17. In its lower part are diametrically brackets 18 and vent holes 19.
Impact weight 2 in the lower part has a head 20, and in the middle of the ring groove 21. It can be interchangeable with different mass, and is extracted and inserted into the tubular body 1 through its upper end.
Lifting and discharging device 4 includes a housing 22 with the lugs 23, the lifting lever 24, two cheeks 25, vkluchaya-off lever 26 with the rotary lever 27, the spring retainer 28 and the thrust axis 29.
The lifting lever 20 in the interaction vkluchaya-off lever 22 with the spring loaded including emphasis 13 occupies its working position and through a longitudinal slot 12 is engaged with the annular groove 17 of the shock mass 2.
Lifting lever 24 in the interaction vkluchaya-off lever 26 with a spring-loaded off the lugs 16 occupies its working position and through a longitudinal slot 12 is engaged with the annular groove 21 of the shock mass 2 for its ascent.
Lifting lever 24 in the interaction involving-off lever 26 with the switching-off of the lugs 14 or 15 goes into idle position, reteplase with the annular groove 17 of the shock mass 2 and providing her fall.
Lifting and dropping device 4 are arranged movably between the guide parts 13 and through the lugs 23 of the hinge for replays to the ends of the cylinders 7 and 8.
Hydrochlide 7 and 8 lugs 27 hinged to the brackets 18. Piston cavity of the hydraulic cylinders 7 and 8 are connected by a short pipe 28 with the filling nozzle 29.
The valve 9 with electro-hydraulic control is installed on the bracket 17 with the plate 30 and through it connected to a pressure head 31 and the drain 32 highways leading to the Hydra pump station 33, and highways 34 and 35 leading to the rod cavities of hydrocontrol 7 and 8.
Two non-contact sensor 10 mounted on the tubular body 1. In figure 1 one sensor is shown by the dotted line, as covered by a screen 5 lifting and dropping mechanism 4, and the other is on the opposite side. Thus, when the lower position of the respective lifting and dropping device 4 screen 5 or 6 were against the corresponding proximity sensor 10.
Remote control panel 11 has electrocutes 36 contacts 37 and electrocutes 38, contacts 39. Power remote control 11 is supplied from the rechargeable battery of 12V when the switch 40.
Connecting the remote control 11 non-contact sensors 10 (EP-16) and to the electromagnets 41 and 42 of the valve 9 by using plug connectors SR, SR, SR, SR.
Hydraulic hammer can work with mounting it on the pile with the help of hooks(not shown) or in bisoprolol version.
After installation of the hammer on the pile 43, the inclusion of a remote control unit 11 of the switch 40 and the supply of hydraulic oil to the control valve 9 depending on the position of the valve 44 and one lifting and discharging device 4 screen 5 or 6 goes down to pirania lifting and dropping of the lever 26 in spring stop 16. While lifting the lever 24 engages with the annular groove 21 of the shock mass 2, and the screen 5 or 6 becomes against proximity sensor 10. Electric current going through the coil 36 or 38 and the closed contacts 37 or 39 of the circuit of the electromagnet. Switches the spool of the pilot valve 45 and accordingly the spool 44 of the valve 9. The piston rod of the hydraulic cylinder 7 or 8 with lifting and discharging device 4 and the impact mass 2 moves upward under the pressure of roaming closed volume piston cavities, which is under pressure at the same time moving down the piston opposite the rod end (opposite lifting and discharging device 4 in the idle position moves downward) until the interaction involving-off lever 26 with the switching-off stop 14 or 15. Lifting lever 24 lifting and dropping device 4 disjoined with the impact mass 2, which falls under its own weight and strikes Boikova part 20 by Amor is Satoru of the striker plate 3. The fall of the shock mass 2, the movement freed up lifting and dropping device 4 to the full movement of the working fluid in the hydraulic cylinder 7 or 8 and while driving down the opposite lifting and dropping device 4 should be approximately the same. Screen 10 of this opposite lifting and dropping device 4 and placed against his beskontaktnogo sensor 5 or 6, provides the switching valve 9 and the drop impact weight 2 with strike after interaction with it already the second lifting and discharging device in accordance with the already described processes. Idling up both lifting and dropping device no. Each turn is followed by the blow.
Disables the stop 15 in the working position provides drop shock the masses with 2 half-height. Switching on or off is achieved by moving the lever 45 through the slots 46 in the holder 47 with the rope 48.
Sources of information
1. Patent No. 2333317, "Hydraulic Hammer".
2. The company prospectus "Stark" (China). Hydraulic hammers HHP series.
Hydraulic hammer for driving piles containing tubular housing, impact mass, two hydraulic cylinders for lifting drums masses valve to control the flow of oil, the pressure and drain the hydroline, characterized in that have camping two lifting and dropping device at the ends of the cylinders with metal screens, two proximity sensors on the tubular housing for interaction with metal screens, piston cavity of the cylinders form a trapped volume of fluid to link them with the pipeline, and the valve communicates only with rod cavities of the cylinders.
|
