The vibration exciter
(57) Abstract:Use: in the construction for driving into the ground construction and other submerged items using compressed air. The essence of the invention: vibration exciter includes a housing 3, which is installed inside the striker 4, the diaphragm chambers and the air-distributing device. The vibration exciter is equipped with a centering rods 5 in the form of rods missed formed in the striker 4 longitudinal channels spaced equally around the perimeter. Rod 5 inserted in the slots of the housing 3 with the possibility of axial and radial movement therein. At the working end of the striker 4 is performed collar, the profile of which corresponds to the profile of the immersed element 1. 1 Il. The invention relates to the construction, in particular to a device for immersion in the soil of building elements using compressed air.Known rod diesel hammers designed for driving into soil pipes and other building elements. In these machines, the impact energy is transmitted to the submersible pipe located on the periphery of the protrusions.Disadvantages rod diesel hammers are the complexity of the design, the length and ruggedness (usually there are four tabs), low efficiency of energy transfer shock, because all the impact energy is transmitted through the dissected tabs, drum size which is much less than the face square hammered element receiving the blow. In addition, in a stationary mode in such hammers implemented mode is forced through an air cushion, so that the efficiency of the rod diesel hammers is relatively low.Closest to the claimed device to the technical essence and the achieved result is a vibration exciter for driving into soil pipes and other submersible construction elements, including a housing connected to the base, hollow drummer holds the air-distributing device, a diaphragm disposed between the ends of the striker and bases, forming a working camera.The disadvantages of this device is the following:
drummer due to backlash between it and the cylindrical body can swing, and the possibility of distortions drummer leads to a slanted stroke;
because of the presence of distortions and oscillations drummer decreases the durability of the diaphragms of the machine.The aim of the invention is to increase the efficiency of driving into the ground submersible element is the fact that the vibration exciter is equipped with a centering rods made rods missed formed by drummer longitudinal channels spaced equally around the perimeter, with a centering rod installed in made in building nests with the possibility of axial and radial displacements.Sign "of the vibration exciter is equipped with a centering rods, made in the form of rods missed formed by drummer longitudinal channels spaced equally around the perimeter" is missing in the above-mentioned analogues and prototype and is not known from other sources. The use of a centering rod allows you to ensure the centering of the vibration exciter and thereby to improve the efficiency of operation of the machine and driving into soil immersion elements. By placing the centering rods evenly around the perimeter of the drummer and pass them educated on the perimeter drummer longitudinal channels is provided by the joint deviation of rods and drummer at occurrence of overturning moment, which provides a centering drummer. The specified characteristic contributes to the achievement of goals and as a result is significant.The sign is Emesene" is missing in the models and the prototype and is not known from other sources. Due to the fixation rod into the slots of the housing with a possibility of axial and radial movement of the possibility of rotation of the striker under the influence of overturning moment arising at the time of oblique impact, and thus the possibility of centering feature of the system drummer-rod relative to the housing of the vibration exciter and the working drum surface. Providing centering feature of the system drummer-rod, this feature improves the efficiency of the process of immersion scored items and the durability of the vibration exciter, excluding the oblique shock. Thus the considered characteristic contributes to the achievement of the goals and, therefore, is essential.Sign of "vibration exciter comprising a casing, inside of which is movably installed drummer, the diaphragm chambers, the air-distributing device and the collar on the working end of the striker having a profile corresponding to the profile of the immersed element contained in the prototype.The implementation of the size and shape of the collar of the working surface drummer corresponding to the profile and dimensions of the immersed element allows the transmission of impact energy from the drums to the submersible element evenly over the th element, and also allows the transfer of impact energy along a straight path, and to reduce energy loss caused by the deformation of the intermediate elements. Thanks to the symptom possible the work of the pathogen, it also improves the efficiency of the process. Therefore, this characteristic is essential.The drawing shows a vibration exciter.Clogging submersible element 1 into the ground by means of vibration exciter 2. The latter consists of a casing 3 in which is placed a drummer with 4 guide rods 5, missing in the slotted holes of the striker 4, spaced evenly around the perimeter of the latter, reason 6 and 7, the apertures 8 and 9, forming working chambers 10 and 11. In the cavity 12 of the striker 4 posted by valve 13, is made in the form of a hollow cylinder. The valve 13 is held by a crosspiece 14. In the last holes, in which are included with the ability to move the lugs 15, rests on the valve 13. Perpendicular to the cavity 12 is made exhaust channels 16, which are connected to atmosphere. For flowing compressed air from the chamber 10 into the chamber 11 in the striker 4 is performed by-pass channels 17. Coaxially with the valve 13 on the grounds 6 and 7 fixed springs 18 and 19. To lower founded the ity of the striker 4 is equipped with an annular collar 20, the profile and dimensions of which correspond to the profile and cross section (end) submersible element 1. The guide rod 5 is fixed in the slots 1 of the bases 6 and 7 using the damping elements 22. Base 6 and 7 on the inner side provided with the tabs attached to the diaphragm 8 and 9, the protrusion of the upper base 6 provided with an axial channel 23. The base 6 has an exhaust aperture 24. The lower base 7 in the design of the vibration exciter performs the role of the striker plate.The vibration exciter operates as follows. Dip-element 1 (tube) attached to the base 7 of the vibration exciter 2. Then compressed air is supplied through the channel 23 in the base 6 of the vibration exciter in the working chamber 10, where through the currently open channels 17 and the cavity 12 in the working chamber 11. The diaphragm 8 and 9 under the pressure of compressed air are curved. At this point, the force developed under the action of compressed air acting on the striker 4 from the side of the working chamber 11, is greater than that of the working chamber 10. Drummer 4 begins to rise. On the lower end surface of the valve 13 in the axial direction operates the compressed air pressure, which presses the valve 13 to the crosspiece 14. In this position the outer cylinder is I to its upper position, rests against stops 15 in the spring 18 and compresses it. The valve 13 under the force of the compressed spring 18 is transmitted through the lugs 15, will move down relative to the striker 4, opens the exhaust channels 16 and closes the by-pass channels 17. As a consequence, the flow of compressed air from the working chamber 10 into the working chamber 11 stops, starts the exhaust from the working chamber 11 through the cavity 12, the exhaust channels 16 and an exhaust port 24 into the atmosphere. Under the action of compressed air in the chamber 10 on the lugs 15, the valve 13 will be held in the lower position. Drummer 4 under the action of compressed air in the working chamber 10 begins to move with acceleration in the direction of the working chamber 11 until, until you hit the annular collar 20 on the base 7 and bonded with him driving the element 1. Simultaneously, the valve 13 is shifted by the spring 19 in the upper position. In the future, the cycle is repeated in the same sequence.Drummer 4 performs a reciprocating motion along the guide rods 5, strikes the annular collar 20 on the base 7 and bonded with him driving the element 1. This bond can be carried out using a special device.When working vibromassage is inaccurate parallel top and bottom faces of the base 7, the diversity of the elastic properties of the diaphragm, etc.In the case of oblique or unicentro hit due to strength occurs mechanical moment, tipping the striker 4 in the direction opposite to the force arising, i.e. in the direction corresponding to more direct impact. Under the influence of this tipping point, the drummer 4 together with the guide rods 5 will be at some angle. It is assumed that the gap between the guide rods 5 and the longitudinal walls of the holes in the striker 4 is relatively small, that at sufficiently long drummer and allows the rods to unfold at an oblique stroke as a whole. When this angle is small. The rod 5 is moved in the slots 21, deforming the damping elements 22. The latter can have a special design (in the simplest case in the form of rubber grommets) and have a large time delay, many large period of the reciprocating motion of the striker 4. Consequently, after each driving stroke and rotation of the striker 4 and the rod 5 at a small angle of the rod will be firmly secured in the sockets 21. The next time an oblique impact, the striker 4 and the rod 5 will be rotated at some angle. The angle of rotation to the t position, strictly parallel to the end face of the base 7. There is self-centering of the vibration exciter.Striking surface of the striker is a plane passing through the outer surface of the collar 20. This surface must be plane, which is in the process of vibration exciter and its centering is set parallel to the plane of the striker plate. To the latter, as noted above, permanently mounted submersible item 1.The presence of the collar 20 on the working surface of the striker 4 allows the transmission of impact energy from the drums at the end of the immersion element normal. While the profile and size of collar 20 must match the profile and cross section (more precisely, end) submersible element 1. Due to this, the impact energy from the collar 20 of the striker 4 passes through the base 7 to the end of the immersion element 1 directly. This enables you to provide a plane-parallel evenly distributed kick. Through this eliminates the loss of energy in the striker plate and other structural elements.Compared with the prototype described the vibration exciter can improve the efficiency of driving into soil submersible elements by eliminating the oblique shock is having box-shaped design and other elements with spaced walls.The use is described of a vibration exciter for mass driving into the ground of the construction elements, particularly large cross-section and mass, will allow to mechanize these works, to increase the efficiency of the process of immersion and receive a specific economic benefit. The vibration exciter for driving into the ground submersible construction elements, including a case in which movably installed drummer, the diaphragm chambers, the air-distributing device and the collar on the working end of the striker having a profile according to the profile of the immersed element, characterized in that, to improve the efficiency of the process driving into soil submersible elements by eliminating the oblique impact and increase the durability of the vibration exciter, it is equipped with a centering rods, made in the form of rods missed formed by drummer longitudinal channels spaced equally around the perimeter, this centering rod installed in made in building nests with the possibility of axial and radial movement.
FIELD: building, particularly to drive piles and other building members in ground during pile foundation erection.
SUBSTANCE: pile driver has actuator, body, eccentric shafts arranged on common axis inside the body and connected to actuator by gearing, overrunning clutch and distribution shaft. Pile driver is provided with additional distribution shaft connected to actuator by overrunning clutch and eccentric shafts arranged in pairs in rotation direction. One eccentric shaft of each pair is connected to additional distribution shaft by gear wheels, another eccentric shaft is connected to distribution shaft and actuator.
EFFECT: increased efficiency and extended range of operational capabilities.
FIELD: vibration technique of intensification of production processes by directive inertial vibration action.
SUBSTANCE: proposed method consists in forming two kinds of vibrations in continuously alternating sequence by means of unbalanced masses revolving in radial axles located on opposite sides relative to vibration rod axis. Vibration exciter includes vibration rod with unbalanced mass holder mounted on it; unbalanced masses are placed on bevel gears and are kinematically linked by means of intermediate gear. Bevel gears with unbalanced masses are placed on radial axles and are located on opposite sides relative to vibration rod axis; intermediate gear is kinematically linked with drive. Proposed method makes it possible to form two kinds of vibration simultaneously: longitudinal reciprocating vibration for forming compelling directive force and transversal torsional swinging vibration for forming torque aligning their maximum and minimum magnitudes in phase and anti-phase modes.
EFFECT: enhanced efficiency.
4 cl, 7 dwg
FIELD: building, particularly to drive and remove large-diameter shell-type piles from ground during pile foundation erection.
SUBSTANCE: vibratory plant comprises vibroexciter with drive composed of two motors, main gripper used as vibroexciter base and fastening means, which fixes vibroexciter to shell-type piles. The vibroexciter is made as two eccentric blocks connected with each other by synchronizing shafts. Each eccentric block includes two cams freely put on stationary axis and connected with drive by tooth-wheels to provide synchronous rotation thereof in mutually opposite directions. Main gripper is provided with fixed thrust and movable wedge-like shoes connected to hydraulic cylinders. Vibroexciter has additional gripper abutting vibroexciter through damping pad and connected to main gripper by means of hydraulic power cylinders and spring-loaded cushion with hydraulic jacks to provide indexed vibroexciter displacement along shell-type pile during pile driving in ground and removal from ground.
EFFECT: increased capacity and reduced costs of works and equipment necessary for foundation erection.
3 cl, 5 dwg
FIELD: building, particularly methods or apparatus for placing sheet pile bulkheads, piles, mould-pipes, or other moulds.
SUBSTANCE: method involves driving two differing invented profiling members, namely additional and main ones, in ground to create invented profiling unit. Additional invented profiling member is driven in ground along with main one for lesser depth and is used to create outer waterproofing means. Before vibratory additional member removal the member is filled with waterproofing composition. The additional member is removed after main profiling member freeing from ground.
EFFECT: extended technological capabilities and increased efficiency due to creation of solid elongated bearing-and-enveloping structure in ground.
3 cl, 7 dwg
FIELD: civil engineering.
SUBSTANCE: invention relates to vibratory equipment, namely to devices for driving in and pulling out piles, consolidating soil, ballast, stone beds. According to invention, vibratory pile driver has two tiers of unbalance shafts with rotation drive, unbalance weight moment control mechanically coupling shaft of unbalance weights of both tiers, control drive. Drives of unbalance weights and control are hydraulic, and vibratory pile driver is furnished with hydraulic accumulator, three normally-open pressure valves each provided with inlet, outlet and control, hydraulic distributor and hydraulic lines to rotate unbalance weights, increase and decrease unbalance weight moment, and drain hydraulic line.
EFFECT: provision of interlocking of starting and stopping of rotation of unbalance weights without zero static unbalance weight moment and automatic shifting of unbalance weights in zero position in case of instantaneous interruption of supply of unbalance weight rotation drive.
2 cl, 1 dwg
FIELD: vibratory equipment, particularly to drive pile member in and remove from ground and to compact ground, blast and stone bed.
SUBSTANCE: vibratory pile driver provided with adjustable static balance weight momentum comprises shafts with balance weights grouped in two layers, differential gear kinematically linking balance weight shafts with each other and including rotary body, two coaxial conical gear wheels and the third conical gear wheel brought into engagement with two first ones. Pile driver also has balance weight shaft rotation drives, which also provide limited differential gear body rotation. Vibratory pile driver comprises one or several horizontal balance weight shaft rows in each layer. One balance weight shaft layer is kinematically linked to shaft of one coaxial conical gear wheel of differential gears through common shaft or through cylindrical toothed gearing. The second layer is connected to another coaxial conical gear wheel of differential gear through common shaft or through cylindrical toothed gearing.
EFFECT: elimination of rigid link between balance weights and gears, which results in expanded parameter range, decreased pile driver mass and size and increased device reliability.
4 cl, 3 dwg
FIELD: seismic vibration equipment, namely directed oscillation generator to vibration sources for seismic-wave action upon oil-gas deposits from earth surface and in building production.
SUBSTANCE: vibration exciter includes first and second weight shafts of each pair that are mutually joined through normally closed clutch. The last has mounted in housing electromagnetic drive with contact-free linear movement pickup, both connected with timing control system. Contact-free frequency and unbalance phase angle pickup of first shaft of each pair is mounted on end of housing in such a way that its disc-code carrier is joined with first weight shaft by means of flexible link. Shaft of rotor of electric motor of electric drive unit is joined by means of flexible link with disc-code carrier of contact-free frequency and unbalance phase angle pickup of second weight shaft of each pair, said pickup is mounted on lid of back bearing assembly of electric motor.
EFFECT: enhanced operational properties of vibration exciter due to its simplified design and lowered mass and size.
FIELD: construction industry.
SUBSTANCE: group of inventions refers to mining engineering and construction industry, namely to construction machine, particularly for vibration generation. Construction machine includes transfer mechanism, at least one hydraulic drive and hydraulic system for providing hydraulic drive with hydraulic medium. At that, at least one lubrication hydraulic line by means of which hydraulic medium can be supplied to transfer mechanism as lubrication means is branched off hydraulic system. At that, in lubrication hydraulic line there provided is dosing device by means of which supply of lubrication means can be changed depending on operating mode of transfer mechanism.
EFFECT: improving operating reliability of machine.
13 cl, 1 dwg
SUBSTANCE: vibration drill includes vibration rotary mechanism with carriage, auger with collaring bit and suspension for basic machine is arranged in the form of silent pile driver of directed action with distribution shaft equipped with gear fixed to it. Input shaft of gear is connected to distribution shaft of silent pile driver of directed action by toothed bevel gear, and output shaft of gear is connected to auger with collaring bit.
EFFECT: improved efficiency of equipment for fabrication of drilled concrete piles in soil, improved quality of drilled concrete piles made in soil, and expansion of technical opportunities.
3 cl, 2 dwg
FIELD: machine building.
SUBSTANCE: invention relates to vibration system intended for making column of material in soil. Said system comprises elongated vibrator with generating surface that has perimetre and one ledge extending, at least, partially around vibrator body perimetre to push material located in annular space under said ledge in depth in downward motion of vibrator body. Invention covers also the method of producing material column in soil with the help of above described system.
EFFECT: transfer of material into column bottom and its compaction.
11 cl, 3 dwg