Electric hammer

IPC classes for russian patent Electric hammer (RU 2379422):

Another patents in same IPC classes:

Electric hammer / 2315181

Electric hammer comprises body with three-phase winding of linear induction motor stator adapted to receive reciprocating hollow striking armature installed therein in fluid-tight manner. The striking armature is monolithic in lower part and includes short-circuited current-conducting winding formed from outer surface thereof. Hammer comprises anvil block with damping means. Linear induction motor stator winding is installed in upper part of cylindrical electric hammer body, which is provided with tubular striking armature position sensors. Cylindrical body of electric hammer is installed inside cylindrical sealed shell so that lower and upper chambers are created. Chamber lengths are equal to cylindrical body length and striking armature travel correspondingly. The upper and lower chambers are freely connected with each other. Upper chamber is communicated with striking armature interior. Lower chamber has pipeline with check valve. Lower chamber and striking armature interiors are partly filled with heat-conductive and electrical insulation liquid. Remainder zones of lower chamber, striking armature interior and total upper chamber are filled with high-pressure heat-conductive gas. Lower chamber has protective safety valve. Vacuum chamber is created between lower monolithic striking armature part and anvil block. Damping means is installed in lower monolithic part of cylindrical electrical hammer body in fluid-tight manner and may reciprocate relatively the body. Cylindrical fluid-tight shell has additional weight. Short-circuited current-conducting winding of linear induction motor stator is linked to frequency-regulated power supply and control system.

Electromagnetic hammer / 2295025

Electromagnetic hammer contains cylindrical magnetic duct body with coaxially mounted electromagnetic coils of the same name of direct and reverse drive, guiding pipe, ferromagnetic strikers, indicators of upper and lower positions of ferromagnetic striker, energy feeding and control system. Electromagnetic hammer consists of n elementary electromagnetic hammers, mounted successively one on top of another. Between ferromagnetic strikers of elementary electromagnetic hammers, non-magnetic steel spacer plates are inserted, each having length equal to drive value of ferromagnetic striker. Above the uppermost ferromagnetic striker and below lowermost ferromagnetic striker, hermetic hollows are formed. Electromagnetic hammer is provided with n load masses. Electromagnetic coils of the same name are connected between each other synchronously and serially and have divided hollow disks. Each electromagnetic coil of the same name together with part of body of elementary electromagnetic hammers is made of identical sections. Guiding pipe and magnetic ducts are made hollow. Guiding pipe of electromagnetic hammer has longitudinal recess, filled with non current-conductive material.

Electric hammer / 2282029

Electric hammer comprises cylindrical body with three-phase winding located on inner body surface and tubular striking rotor slidably arranged in the body. The striking rotor is provided with excitation coils and short-circuited current-conducting rings located on outer striking rotor surface at poles thereof. The electric hammer has set-on weight installed on cylindrical surface thereof and connected to the surface and comprises striking rotor position sensors. Electric hammer has movable anvil block having case sealed to lower, inner part of cylindrical hammer body. The anvil block comprises damping chamber. High-pressure air chamber is defined by striking rotor cavities and cylindrical hammer body over the striking rotor and is connected to compressor by pipeline provided with check valve. Damping chamber of anvil block is communicated with ambient space through high-pressure safety valve, which in turn is linked to compressor through check valve. Lower part of anvil block has air-tightly installed cylindrical transmission power plate supported by anvil block case. Electric hammer also has power supply system, which controls three-phase winding of cylindrical body, and striking rotor excitation system.

Method for cast-in-place pile building in collapsible ground / 2266368

Method involves drilling pilot hole; installing casing pipe connected to puncher; punching the well ground by dropping load on the puncher through casing pipe to reach design point and enlarging the casing pipe; arranging reinforcement case in the pipe; filling the well with concrete mix as casing pipe moves upward; compacting the concrete mix. In the case of pile with 300-1500 mm diameter forming and in the case of collapsible ground layer thickness up to 18 m or 18-50 m ratio between pilot hole depth and collapsible ground thickness is 1:(4.5-6) and 1:(1.5-5). The puncher has reinforced concrete tip and head made of tube with outer diameter equal to inner diameter of pilot hole. Welded to the head are centering rings. The tip has ring to engage thereof with technological control rod provided with thread, washer with retainers and nut on opposite end thereof. Ratio of height H of upper head part provided with centering rings to length of casing pipe to be installed in the head is 1:(20-30). Ratio between outer puncher diameter D and outer diameter d at tapered part ℓ thereof is equal to 1:0.8. Length ratio between cylindrical head part L and cylindrical tapered part ℓ is equal to 1:0.6. Angles γ of head and head transition area leading to tapered part ℓ are equal to 30°. Difference between outer puncher diameter D to outer casing pipe T diameter is 90-100 mm.

Device for driving casing strings / 2245964

Device is suspended on flexible support of balancing mechanism and includes striker bar with tail piece, head piece of casing pipes, spring and locking element placed on tail piece. Tail piece of striker bar is made with stopping clamp and is provided with support washer. Locking element is made with possible displacement along tail piece axis. Spring is mounted between support washer and locking element.

Tubular pile, encased in concrete, the method of driving piles / 2236505

The invention relates to tubular piles, enclosed in concrete

Device for immersion in the soil pipes / 2135692

The invention relates to the field of construction equipment and is intended mainly for diving into the ground metal pipes, primarily for the trenchless laying of underground communications

The method of construction of an anchor pile in casinopokernews heaving soils / 2114250

Device for pile driving during the laying of the foundation pillars / 2101419

Locking device / 2099471

Device for driving casing strings / 2245964

Method for cast-in-place pile building in collapsible ground / 2266368

Electric hammer / 2282029

Electromagnetic hammer / 2295025

Electric hammer / 2315181

Electric hammer / 2379422

Electric hammer contains a body with a three-phase primary winding on its internal surface. The body comprises a floating a head anchor with a short-circuited conductive winding on its external surface. It also accommodates head anchor position sensors and a frequency-controlled supply and control system, a hatchway with shock-absorbers. The electric hammer is made of N primary bodies and startors respectively with bearings on their ends. There bodies in upper and lower parts have guides of the head anchor travel. Said bodies and guides are placed in the second body formed along the full length of the first bodies and guides with air gaps, The guides in upper and lower parts have the apertures connected with said gaps. The upper cover of the upper guide is provided with a spring shock-absorber, and in the upper and lower parts of the second body of the electric hammer there are sucking and discharge fans respectively. The frequency-controlled supply and control system can be connected to a storage battery.

Method for hollow pile submersion (versions) / 2386751

Invention is related to construction, in particular to pile foundations. Method for submersion of reinforced concrete hollow pile under action of static or dynamic load developed by installation with loader includes installation of soil piercing device (SPD) into pile cavity, fixation of its position relative to pile; installation of pile with fixed SPD into vertical position relative to earth surface by equipment for pile submersion; submersion of pile into soil till specified elevation, under action of static, dynamic or combined load at pile and facility of soil piercing simultaneously; removal of soil piercing facility from pile cavity; filling of cavity with concrete mortar; at the same time SPD is installed in pile cavity, comprising stem and sharpened tip in the form of cone, or pyramid, or wedge, in which distance from upper end of rod to base of tip is longer than pile length; base of tip is set at the distance from lower end of pile, defined from the following ratio: where z - distance from lower end of pile to tip base; δ - minimum thickness of pile hollow wall; α - angle of tip sharpening.

Method for erection of foundation, foundation and pile / 2386752

Group of inventions is related to construction and may be used to erect foundations of industrial and civil buildings with high vertical and horizontal loads under complex engineering and geological conditions, including undermined territories. In process of pile foundation erection piles are installed serially. At least one of piles is driven towards and at the angle to the previously arranged pile with provision of mutual support. Piles may be curvilinear. In this case they are submerged in soil with convexity to the side of base soil with the possibility to form arches in soil, which are inserted one into another. Piles may be provided with widening, then they are driven till mutual support in the area of widening. Widening may be arranged with holes or in the form of forks with teeth, also equipped with links with the possibility of their partial rumpling or damaging. Widening teeth may be joined by rope, besides rope is fixed on outer teeth and is pulled through holes with rollers in central teeth.

Impact device to submerge rods into soil / 2443827

Body of an impact device is rigidly fixed on a front external end facing the soil surface in a hollow double-sided stem having a piston in a hydraulic cylinder arranged in the plane perpendicular to the soil surface and fixed as capable of angular rotation by ±90° in the carriage. This carriage is progressively movable in vertical guides of the frame parallel to the specified plane and rigidly fixed in the rear part of a hydroficated basic machine. At the same time the submersible element enters into the soil via an end hole in the rear external end of the stem and is substantially permanently placed in its axial plane. Application of the invention will make it possible to ensure complete mechanisation of the soil slopes reinforcement process by driving flexible rod elements into them.

Pile driver / 2444591

Pile driver comprises an upper part of the pile driver guides arranged on the front part of the basic machine and supported with a hydraulic cylinder of pile driver guides lifting at the back, and a lower part of the pile driver guides supported with a facility of control in back and forth direction, a facility of control in back and forth direction comprising a bracket of the pile driver guides, having a rotary base attached as capable of rotation to the basic machine, and a rotary end attached as capable of rotation to the lower part of the pile drive guides, and a facility to actuate the bracket to rotate the bracket of the pile drive guides relative to the rotary base. The first arc outlined with the rotary end, when the bracket of the pile driver guides rotates for control of the lower part of the pile driver guides in back and forth direction. The second arc outlined with a connection part between the pile drive guides and the top of the hydraulic cylinder for lifting of the pile drive guides, which moves, when the lower part of the pile drive guides moves back and forth along the first arc, besides, both are convex to upwards. The radius of the first arc is less than the radius of the second arc. Each of the end of the first arc and the end of the second arc, when the lower part of the pile drive guides is installed in the farthest back position, is in the highest position, and the direct line passing through both end points of the second arc, is parallel to the tangent in the central part of the first arc.

FIELD: building.

SUBSTANCE: electric hammer contains a body with a three-phase primary winding on its internal surface. The body comprises a floating a head anchor with a short-circuited conductive winding on its external surface. It also accommodates head anchor position sensors and a frequency-controlled supply and control system, a hatchway with shock-absorbers. The electric hammer is made of N primary bodies and startors respectively with bearings on their ends. There bodies in upper and lower parts have guides of the head anchor travel. Said bodies and guides are placed in the second body formed along the full length of the first bodies and guides with air gaps, The guides in upper and lower parts have the apertures connected with said gaps. The upper cover of the upper guide is provided with a spring shock-absorber, and in the upper and lower parts of the second body of the electric hammer there are sucking and discharge fans respectively. The frequency-controlled supply and control system can be connected to a storage battery.

EFFECT: ensured high reliability and improving efficiency.

The invention relates to the construction industry and can be used for driving concrete piles, heavy metal pipe piles in the seabed during the construction of fixed offshore oil Legostayev platforms, including in submarine works at great sea depths or as element heavy duty impulsive seismic sources for non-explosive seismic operations.

Known electromelt [avsw of the USSR №497405. Bull. "Opening. Of the invention. Industrial designs. Trademarks, 1975, No. 48], which contains a cylindrical housing with magnetic poles and coaxially mounted electromagnetic coil backward and forward movement, a guide tube, a ferromagnetic head, the upper and lower provisions ferromagnetic striker system power and control.

The disadvantage of this design electromate is its low efficiency, a large number of winding copper for the manufacture of solenoid coils, resulting in significant cost and low reliability due to the poor conditions of the heat sink from the power of the electromagnetic coils.

Closest to the proposed invention to the technical essence and the achieved result is electromelt [autospid. No. 58669], which is the prototype and contains the head, ARPUs with three-phase stator winding on the inner surfaces of the linear induction motor, in which with the ability reciprocating movement of the hermetically installed monolithic hollow in the lower part of the ferromagnetic anchor-head with conductive squirrel-cage winding on its outer surface, and a striker plate with shock.

The lack of such electromate is its low efficiency and reliability due to the complexity of the design and bad cooling conditions anchor-striker and stator of the linear motor.

The objective of the invention is to increase the efficiency of electromate and reliability.

This task is achieved by the fact that electromelt containing the main body with the basic stator winding on the inner surfaces of the linear induction motor, in which free movement is set ferromagnetic anchor-head with conductive squirrel-cage winding on its outer surface, the transducer armature is brisk in the main body of electromelt system, variable-frequency power and control, a cap with damper and electrobolt is further provided with N-1 elementary stators with the main buildings, having bearings at its ends and additional buildings with air gaps between the primary and secondary housings, upper and lower elementary have rails, so the e is equipped with additional buildings, the upper cover upper rail provided with a shock absorber in the form of a spring, and the top and bottom housings of electromate set accordingly retractable and exhaust fans, the system variable frequency power supply and control electromate connected to a commercial power supply or to the appropriate voltage battery, also between the absorber electromate, its lower end and the tip placed the movable member between the anchor-brisk and bottom rail anchors-striker of electromate.

The drawing shows a longitudinal section of the proposed electromate. Electromelt consists of N main body 1, the drawing shows electromelt when N=2 with three-phase windings elementary stator linear induction motor 2. Within these elementary stators and housings with bearings 3, providing an air gap 4 elementary stators, installed with the possibility of reciprocating movement of the ferromagnetic anchor head 5 with conductive squirrel-cage winding 6 and a hardened tip 7. The upper element 8 additional housing electromate consisting of elements 8, 9, 10, 11, installed, at least two upper position sensor 12 and the lower position 13 anchor-striker 5. System frequency-regulated electric is obitaniya (not shown) on one side is connected to a commercial power supply or the battery, and on the other side - three-phase terminals of the stator of the linear motor, connected in series or in parallel(not shown).

The main section 1 and the stators 2 and bearings 3 in the upper and lower portions provided with guides 14, 15 along the length of the stroke of the armature is brisk. In these guides in the upper part of the holes 16, 17. These guides, together with N blocks of stators placed in the additional enclosure made of airtight elements 8, 9, 10, 11.

In elements 8 and 11 additional housing set accordingly retractable 18 19 and exhaust fans. The flange 20 of the lower rail anchors-striker through the absorber 21 rests on the flange 22 of the cap 23. In addition, the cap 23 has a damper 24 in the upper part and 25 in its lower part. On the damper 25 in the cap 23 is installed hammered pile 26. In the upper part of the guide 14 in its top cover 27 is installed spring 28. Between the rails 4, 5, main chassis 1 and the additional body is made of air gaps 29, 30, 31, 32. Power supply circuit with the battery and the system variable frequency control is equipped with a remote control (not shown). Management electromotor by using microcontroller via cable, radio or optical channel (not shown). At the bottom of electromate m is waiting for anchor-busy, the guide 15, the damper 21 and the head 23 movably mounted movable element 33.

The device operates as follows. Electromelt the tip 23 of the flange 22 and the shock absorbers 24, 25 is set Koper on hammering the pile 26, additional housing electromate of the elements 8, 9, 10, 11 with the flange 20 of the guide 15 is based on the shock absorber 21 and the head 23.

When the supply voltage is required, time-varying frequency from the system variable frequency control on the stator 2 with case 1, the air gap creates a traveling magnetic field in accordance with the law V=2τf, where τ is the pole division of the stator winding (m); f is the frequency of the current supplied to the stator (1/s). This speed m/s platoon anchor-striker 5 that generates a traveling magnetic field, creates a pulling force in accordance with the law F=BLI, and the anchor-head begins to move in the upper position. With the approach of the armature-striker to the upper position sensor 12, the sensor gives a signal to the control system on the reverse and the beginning of the braking armature is brisk. At the same time with an electric brake for maximum during anchor-striker touches the damper 28 in the top cover 27 of the guide 14. There is an intense electrical and mechanical braking of the armature is brisk. The latter increases the efficiency of electromate, as this option when small and especially zero near the posts is practically zero, and the mechanical braking significantly increases the efficiency of electromate. After inhibition by continuous increase of the power frequency of the stator 2 from the frequency-controlled system with any necessary restrictions on values of currents and accordingly efforts, an intensive acceleration anchor-striker to the shock velocity, which typically lies in the range of 4-6 m/S.

With the passage of the anchor-striker through the sensor lower position 13 again the signal in the control system electromotor on a new switch, but with some delay. Ferromagnetic anchor head at this time through the dampers 24, 25 transmits the energy of the shock pulse to the tip 23 and hammered the pile 26. Pile plunges into the ground, and the body electromate together with the stators and the guide falls on the absorber 21. The anchor head 5 by the elasticity of the shock absorbers 24, 25, the elastic properties hammered soil and the piles 26 receives the speed of the "rebound". This speed is usually 20-30% of the impact speed, which almost matches the speed of the platoon firing pin in the upper position. This process eliminates the process of cyclic start electromate that significantly increases its energy characteristics. After the "rebound" anchor-striker from tip system VFD control back on the stator electromate and its cycle is povtoryaetsya. The introduction of the bearings 3 and the guides 14, 15 and the rolling element 33 in the lower part of the main body improves reliability electromate, and the installation of the fan 18 and 19 in the annexe consisting of elements 8, 9, 10, 11, even more increases the intensity of cooling electromate, which further increases the reliability and increases the activation time. This embodiment of electromate ensuring full compliance tasks to increase efficiency and reliability by improving the work of bearing assemblies, better cooling and to facilitate periodic modes of inhibition in the upper position of the anchor is brisk. Structurally, electromelt may be made cylindrical, flat, or square. The stators can be connected in parallel or in series electrically and mechanically. The power of such stators can be done either from one or from several variable frequency drives operating synchronously and in phase.

According to this design concept, you can create electromate with masses known to 100-200 tons

In addition, electromelt according to the proposed scheme has a complete environmentally friendly and can be operated in the pure waters of the seas, oceans.

Electromelt containing housed in the annexe of the foundations of the first building phase winding elementary stator linear induction motor, bearings mounted on the ends of the main body, placed in the stator main body with a possibility of free movement of ferromagnetic anchor-head with conductive squirrel-cage winding on its outer surface, the position sensors ferromagnetic armature is brisk in the main body of electromate, a cap with damper system variable-frequency power and control, characterized in that electromelt performed with at least two main buildings with elementary stators, with the upper and lower main body provided with guides along the stroke length of the ferromagnetic armature is brisk, and the additional body is made of sealed elements, each of which is concentrically installed relative to the main body, the upper and lower rails to form between them an air gap with the top rail is made with a lid with spring shock absorber to interact with the ferromagnetic armature is brisk, in the elements for more housing, concentric placed relative to the upper and lower guides, respectively installed the intake and exhaust fans in the upper and lower parts respectively of the upper and lower guide holes, and the flange of the bottom rail rests on the flange of the cap through the AMO shall citator, at the bottom of electromate between ferromagnetic anchor-brisk, bottom rail, bumper and head movably mounted guide element, and the system variable frequency power supply and control electromate connected to a commercial power supply or to the appropriate voltage battery.