Impact mechanism

FIELD: plastic metal working; impact-type mechanisms for stamping, riveting and striking the gates.

SUBSTANCE: proposed impact mechanism has power cylinder with working and idle stroke cavities where piston-striker is arranged. Piston is provided with two rods. Working tool is secured on one of rods. Cross-sectional area of second rod exceeds that of rod provided with working tool. Impact mechanism includes receiver which is connected with compressed air source at all times and is brought in communication with working stroke cavity of power cylinder. Impact mechanism is also provided with distributor made in form of electrically- and pneumatically-controlled two-position three-line spool valve. Receiver is provided with passages and power cylinder has holes for connection with these passages; these holes are made in side wall of cylinder sleeve and are closed by piston-striker at moment when it returns to initial position.

EFFECT: increased impact energy.

3 cl, 1 dwg

 

The invention relates to pneumatic devices impact and can be used in the processing of metals by pressure, in particular pneumostome for marking, riveting, padding molded etc.

Known percussion mechanism containing the power cylinder with cavities working and idling, placed in it the piston-drummer, performed with a rod on the end of which is secured a working tool, and located from the side of the cavity of the stroke of the power cylinder rod, the cross-sectional area than the cross-sectional area mentioned shaft with the working tool, a compressed air source, the receiver continuously connected to a source of compressed air and is connected with the cavity of the stroke of the power cylinder through the hole made in the power cylinder with the possibility of closing its end of the piston-striker when the last location in the initial position, and a distribution device in the form of a two-position valve with electropneumografia, whose input is connected to the receiver, and the output from the cavity idle power cylinder (SU 1269978 A1, 15.11.1986, 24 In 39/00).

The disadvantage of this mechanism is the lack of strike power due to the limited area of the holes, connecting the working cavity of the power cylinder with the receiver.

Declared sabreena aimed at the achievement of the technical result which is to increase the impact energy.

This technical result is achieved by the fact that in the known shock mechanism containing the power cylinder with cavities working and idling, placed in it the piston-drummer, performed with a rod on the end of which is secured a working tool, and located from the side of the cavity of the stroke of the power cylinder rod, the cross-sectional area than the cross-sectional area mentioned shaft with the working tool, a compressed air source, the receiver continuously connected to a source of compressed air and is connected with the cavity of the stroke of the power cylinder through the hole made in the power cylinder with the possibility of closing its end of the piston-drummer when the last location in the initial position, and a distribution device in the form of a two-position valve with electropneumografia, whose input is connected to the receiver, and the output from the cavity idling of the power cylinder in accordance with the invention, the receiver is made with the channels, the power cylinder is United with the said channels of the receiver holes located in the side wall of the sleeve of the power cylinder with the potential overlap between their piston-drummer at the time of returning the latter to its original position, and duhozanye the second valve made three.

In addition, the percussion mechanism is equipped with an auxiliary cylinder with distribution device in the form of a differential valve control chambers, one of which is permanently connected to the receiver, and the second with a cavity idling of the power cylinder, and the entrance of the mentioned valve connected to the channel reset two-position three-way valve, and the outputs from the cavities of the auxiliary cylinder.

The auxiliary cylinder can be made with the rod having channels for connecting the rod end of the auxiliary cylinder with the atmosphere at the time of return mentioned rod in extreme stenothoe position.

The invention is illustrated by the drawing, which schematically shows a striking mechanism.

The percussion mechanism includes a power cylinder 1, placed in it the piston-drummer 2, dividing the cylinder cavity 3 working and idle 4 stroke and having a smaller rods 5 and 6 more diameters. On the stem of smaller diameter 5 attached a working tool 7. The percussion mechanism is equipped with a power source 8 and the receiver 9, which communicates with the cavity 3 working stroke through the hole 10, an on / off valve 11 with electropneumografia, whose input is connected to the receiver 9, and the output from the cavity idle 4 stroke. In the side wall of the sleeve of the power cylinder is made a little hole is Tille 12, constantly connected to the receiver 9 through the channels 13. For the implementation of secondary functions required, for example, to perform actions on loading (unloading), the presentation of the material, etc., the percussion mechanism can be provided with an auxiliary cylinder 14 with the working cavities 15 and idle turn 16 and valve 17, is made in the form of a differential two-position valve control chambers, one of which is permanently connected to the receiver 9, the second cavity idle 4 stroke power cylinder 1. The entrance valve connected to the channel reset 18, and outputs connected to the cavities of the auxiliary cylinder 14. In addition, the piston rod 19 provided with channels 20, which connects the cavity of the blank 16 progress with the atmosphere at the time of return of the stock at stenothoe position.

The percussion mechanism works as follows.

In the initial position, the piston-drummer 2 is in the left position, overlapping the end face and lateral surface of the hole 10 and 12, connecting the receiver 9 with a cavity 3 working stroke. When this cavity 4 of idling through the valve 14 is connected to the receiver 9. The piston 19 of the auxiliary cylinder 14 is in the left position, the rod cavity idle 16 progress through the valve 17 and the channels 20 are connected with the atmosphere, and the piston chamber 15 working stroke under Lucena to the channel reset 18 of the spool 11.

When moving the slide valve 11 to the left cavity of the blank 4 stroke power cylinder 1 through the channel reset 18 and the valve 17 located in the leftmost position, is connected with the piston cavity 15 of the auxiliary cylinder 14. Under the action of air pressure coming from the cavity idle 4 stroke, the piston 19 makes a stroke, after which due to the pressure drop in the cavity 4 of the valve 17, moving in the right position, connects the rod cavity of the auxiliary cylinder 14 with the cavity 4 of the power cylinder 1 and the piston cavity 15 with the atmosphere. Under pressure, remaining in the cavity 4 of the compressed air, the piston 19 does idle at the end of which rod cavity 16 (and hence the cavity 4 of the power cylinder 1) through the channel 20 communicates with the atmosphere. When the pressure in the cavity 4 will drop to a pressure close to atmospheric, and violated inequality of the forces acting on the piston-striker 2 from the receiver 9 and the cavity 4, the piston-drummer 2 starts its movement in the direction of the strike. With the opening of the holes 12 located in a large number around the circumference of the lateral surface of the sleeve of the power cylinder 1, the piston-drummer for a very short time (a fraction of a second) develops high speed. After striking the spool 11 peremeshautsa right position, therefore the distributor 17 and the piston-drummer 2 due to the difference of the squares of their ends, under pressure, moving left, occupy its original position. Multiple increase of the impact energy is achieved by the presence in the receiver 9 additional channels 13, the total orifice which is several times greater than the nominal diameter of a circular hole 10. High efficiency impact mechanism can be explained by the impact mechanism of the auxiliary cylinder 14, useful work is being financed by the energy of compressed air trapped in the cavity 4 of idling of the power cylinder 1.

1. The percussion mechanism, containing the power cylinder with cavities working and idling, placed in it the piston-drummer, performed with a rod on the end of which is secured a working tool, and located from the side of the cavity of the stroke of the power cylinder rod, the cross-sectional area than the cross-sectional area mentioned shaft with the working tool, a compressed air source, the receiver continuously connected to a source of compressed air and is connected with the cavity of the stroke of the power cylinder through the hole made in the power cylinder with the possibility of closing its end of the piston-striker when the last location in the original position, and R Opredelitel device in the form of a two-position valve with electropneumografia, an input connected to the receiver, and the output from the cavity idle power cylinder, characterized in that the receiver is made with the channels, the power cylinder is United with the said channels of the receiver holes located in the side wall of the sleeve of the power cylinder with the potential overlap between their piston-drummer at the time of returning the latter to its original position and two-position valve made three.

2. The mechanism according to claim 1, characterized in that it is equipped with an auxiliary cylinder with distribution device in the form of a differential valve control chambers, one of which is permanently connected to the receiver, and the second with a cavity idling of the power cylinder, and the entrance of the mentioned valve connected to the channel reset two-position three-way valve, and the outputs from the cavities of the auxiliary cylinder.

3. The mechanism according to claim 2, characterized in that the auxiliary cylinder is made from a rod having channels for connecting the rod end of the auxiliary cylinder with the atmosphere at the time of return mentioned rod in extreme stenothoe position.



 

Same patents:

FIELD: building equipment.

SUBSTANCE: pneumatic hammer includes handle, jacket, housing mounted in jacket, air shock absorbing chamber and shock absorbing spring. Sleeve is arranged between handle and jacket; air supply branch pipe is mounted in said sleeve with possibility of motion. Air shock absorbing chamber is formed by means of handle and sleeve. Shock absorbing spring is mounted between beads formed on housing and on jacket.

EFFECT: improved shock absorbing properties of hammer.

3 cl, 2 dwg

FIELD: ultrasonic tools for vibration-percussion working of ductile metals and alloys by plastic deforming, possibly relaxation-strengthening and passivation treatment, for example of welded joints, surfaces of metallic structures subjected to action of atmospheric, water and soil corrosion.

SUBSTANCE: ultrasonic vibration-percussion tool includes sleeve mounted in wave-guide acoustic transformer at interference whose effort corresponds to its radial deformation exceeding amplitude of cross oscillations of wave-guide acoustic transformer in node of longitudinal oscillations when transformer operates in idle mode. Guides are joined to body of tool through elastic vibration-insulation gaskets.

EFFECT: lowered harmful action of vibrations acting upon operator or upon apparatus controlling operation of tool used as part of manufacturing system.

2 cl, 2 dwg

The invention relates to the mining industry and construction, in particular for pneumatic machines percussion

The invention relates to mechanical engineering and can be used in the production of impact machines

The invention relates to mechanical engineering and can be used as a hand tool for breaking rock, concrete, lining furnaces, metal cutting shears and applied in mining and construction, as well as in the metallurgical industry

The invention relates to percussive machines with reciprocating movement of the tool, namely safety devices

Hydroshock device // 2099523

Impact mechanism // 2286226

FIELD: plastic metal working; impact-type mechanisms for stamping, riveting and striking the gates.

SUBSTANCE: proposed impact mechanism has power cylinder with working and idle stroke cavities where piston-striker is arranged. Piston is provided with two rods. Working tool is secured on one of rods. Cross-sectional area of second rod exceeds that of rod provided with working tool. Impact mechanism includes receiver which is connected with compressed air source at all times and is brought in communication with working stroke cavity of power cylinder. Impact mechanism is also provided with distributor made in form of electrically- and pneumatically-controlled two-position three-line spool valve. Receiver is provided with passages and power cylinder has holes for connection with these passages; these holes are made in side wall of cylinder sleeve and are closed by piston-striker at moment when it returns to initial position.

EFFECT: increased impact energy.

3 cl, 1 dwg

FIELD: ultrasonic tools for vibration-percussion working of ductile metals and alloys by plastic deforming, possibly relaxation-strengthening and passivation treatment, for example of welded joints, surfaces of metallic structures subjected to action of atmospheric, water and soil corrosion.

SUBSTANCE: ultrasonic vibration-percussion tool includes sleeve mounted in wave-guide acoustic transformer at interference whose effort corresponds to its radial deformation exceeding amplitude of cross oscillations of wave-guide acoustic transformer in node of longitudinal oscillations when transformer operates in idle mode. Guides are joined to body of tool through elastic vibration-insulation gaskets.

EFFECT: lowered harmful action of vibrations acting upon operator or upon apparatus controlling operation of tool used as part of manufacturing system.

2 cl, 2 dwg

FIELD: building equipment.

SUBSTANCE: pneumatic hammer includes handle, jacket, housing mounted in jacket, air shock absorbing chamber and shock absorbing spring. Sleeve is arranged between handle and jacket; air supply branch pipe is mounted in said sleeve with possibility of motion. Air shock absorbing chamber is formed by means of handle and sleeve. Shock absorbing spring is mounted between beads formed on housing and on jacket.

EFFECT: improved shock absorbing properties of hammer.

3 cl, 2 dwg

Impact mechanism // 2286226

FIELD: plastic metal working; impact-type mechanisms for stamping, riveting and striking the gates.

SUBSTANCE: proposed impact mechanism has power cylinder with working and idle stroke cavities where piston-striker is arranged. Piston is provided with two rods. Working tool is secured on one of rods. Cross-sectional area of second rod exceeds that of rod provided with working tool. Impact mechanism includes receiver which is connected with compressed air source at all times and is brought in communication with working stroke cavity of power cylinder. Impact mechanism is also provided with distributor made in form of electrically- and pneumatically-controlled two-position three-line spool valve. Receiver is provided with passages and power cylinder has holes for connection with these passages; these holes are made in side wall of cylinder sleeve and are closed by piston-striker at moment when it returns to initial position.

EFFECT: increased impact energy.

3 cl, 1 dwg

FIELD: percussion mining and construction machines, particularly methods or devices for dislodging with or without loading.

SUBSTANCE: device comprises supply-line air chamber, switching device, which initiates compressed air delivery to supply-line air chamber, hollow cylinder, striker, which divides cylinder interior into idle and working stroke chambers and accumulation chamber permanently communicated with working stroke chamber thorough bypass channel. Device also has lid installed at cylinder end from working stroke chamber side and permanently opened inlet throttle channel communicated with idle stroke chamber and starting throttle channel permanently opened in idle stroke chamber and connecting supply-line air chamber with idle stroke chamber. Device comprises discharge channel made in cylinder wall and working tool with stem, as well as cup with rim and blind augmenter located in cylinder wall from idle stroke chamber side. The blind augmenter is permanently communicated with supply-line air chamber via throttle channel made in lid. The blind augmenter is periodically connected with idle stroke chamber through radial augment channel made in cylinder wall. Distance between distributing augment channel edge section and discharge channel is less than striker travel. Cup has bottom facing the lid and is provided with annular rim supported by rim made in the lid to create supply-line air chamber.

EFFECT: increased impact force to be applied to substance to be worked.

1 dwg

FIELD: percussion mining and construction machines, particularly methods or devices for dislodging with or without loading.

SUBSTANCE: device comprises supply-line air chamber, switching device, which initiates compressed air delivery to supply-line air chamber, hollow cylinder, striker, which divides cylinder interior into idle and working stroke chambers and accumulation chamber permanently communicated with working stroke chamber thorough bypass channel. Device also has lid installed at cylinder end from working stroke chamber side and permanently opened inlet throttle channel communicated with idle stroke chamber. Device comprises discharge channel made in cylinder wall and working tool with stem, as well as cup with bottom facing the lid and provided with annular rim supported by rim made in the lid to create supply-line air chamber. Blind augmenter is located in cylinder wall from idle stroke chamber side. The augmenter is permanently communicated with supply-line air chamber by means throttle channel made in lid, annular groove and longitudinal channel of the cylinder. The augmenter periodically communicates with idle stroke chamber by means of radial augment channel made in cylinder. Striker has annular groove and is provided with starting throttle channel. Distance between distributing augment channel edge section and discharge channel is less than striker travel.

EFFECT: increased impact force to be applied to substance to be worked.

6 cl, 5 dwg

FIELD: percussion mining and construction machines, particularly methods or devices for dislodging with or without loading.

SUBSTANCE: device comprises supply-line air chamber, switching device, which initiates compressed air delivery to supply-line air chamber, hollow cylinder, striker, which divides cylinder interior into idle and working stroke chambers and lid installed at cylinder end from working stroke chamber side. The lid has rim supporting rim of cup so that supply-line air chamber is created in-between. Device also has pipe arranged in lid orifice and provided with permanently opened inlet throttle channel communicated with idle stroke chamber. The inlet throttle channel connects supply-line air chamber with idle stroke chamber. Lid also has annular inlet throttle channel providing flow inlet in working stroke chamber and defined by pipe side wall and lid orifice. Device also comprises accumulation chamber permanently communicated with working stroke chamber through radial bypass channel in cylinder, discharge channels formed in side cylinder walls and working tool with stem. Blind augmenter is located in cylinder wall from the side of idle stroke chamber. The augmenter is permanently communicated with supply-line air chamber by means of radial augment channel made in cylinder body. Distance between distributing augment channel edge section and discharge channel is less than striker travel.

EFFECT: increased impact force to be applied to substance to be worked.

1 dwg

FIELD: invention refers to strengthening element for fixing in short, not under core hole, mode and adjusting instrument for fixing similar strengthening element.

SUBSTANCE: mentioned strengthening element has rod, which on one end has thrust cone, which expands in direction to rod, and non-split, tubular clenched bushing through which rod passes and which for expansion and fixing in blind hole is fulfilled with possibility of its pulling on thrust cone so, that it expands in face field turning to thrust cone. Hollow conic expansion of clenched bushing has more sharp conic angle then thrust cone. Mode of fixing of strengthening element in opening is in that clenched bushing is pulled on thrust cone by way of transfer on clenched bushing of vibrating movements in ultrasound diapason of frequencies. Fixing with such mode is light and lightly loads the place of fixing. Adjusting instrument for strengthening element has central rod entering into axial opening of thrust cone at installation on face side of clenched bushing. At that adjusting element has tubular rim circling around central rod for installation on face side of clenched bushing. External diameter of rim is no larger then external diameter of clenched bushing.

EFFECT: increases reliability of strengthening.

13 cl, 13 dwg

FIELD: mechanics.

SUBSTANCE: hammer consists of a body with radial outlet and central channels, lid with central hole, striker with axial through channel splitting central channel into working stroke and idle stroke chambers, tube with dead bead from the side of cover. Cover is provided with radial and longitudinal channels and installed coaxially in central channel and displaced in axial through channel of striker and central hole of lid. Cup in the hammer is tightly installed as regard to hammer body forming circular accumulating chamber, which contacts with working stroke chamber by means of radial bypass channel in hammer body. Network air pre-chamber with air supply channel continuously interacts with compressed air network. Hammer also includes air baffling ring with outlet slotted channel, operating tools with bead interacting with body end, operating tool tongue, cap to prevent operating tool from dropping out from central body channel. Hammer body is provided with groove from the side of cup and lid is located in groove to enable reciprocal movements.

EFFECT: reduction of back pressure forces in working stroke chamber and improvement of hammer vibration indicators.

2 dwg

FIELD: mechanics.

SUBSTANCE: invention is related to construction and mining impact machines. Mechanism includes network air chamber, pre-chamber, hollow cylinder with striker splitting cylinder cavity into working and idle stroke chambers, lid with bead at one cylinder end from working stroke chamber side, tube with continuously opened inlet duct. Inlet duct connects pre-chamber with idle stroke chamber. Mechanism is also comprised of a cup with circular bead directed to lid bead, circular static boosting chamber in cylinder wall from the side of idle stroke chamber. Boosting duct in cylinder wall is in the form of radial channel connecting static boosting chamber with idle stroke chamber. Boosting duct connects also outlet ducts in cylinder walls and operating tool with tongue. Striker is provided with internal and external recessed chambers interconnected by bypass duct and so that the distance from cutoff edge of boosting duct shear to outlet duct is more than the length of external recessed chamber on striker. Side surface of tube is ensured with radial channel connecting internal recessed chamber in striker with longitudinal tube ducts. From the side of operating tool longitudinal duct of tube is provided with start-up throttle.

EFFECT: increase of impact effect to treated medium.

1 dwg

FIELD: mining.

SUBSTANCE: invention relates to the construction and mining machines with impact action for fragmentation of rocks and frozen ground by heavy airbreaking machines and to the plugger drills. The device contains the chamber of the network air, prechamber, quill cylinder with installed hammer which separates the cylinder cavity to chambers of the idle and working stroke, head with collar, permanently open inputting throttle conduit made in the tube and connecting the network chamber with the idle chamber, cartridge with the annular collar faced to the head collar, lentic afterburning chamber in the cylinder wall from the idle chamber side, radial afterburning conduit in the cylinder wall which connects the lentic afterburning chamber with the idle chamber, discharge ports in the cylinder sidewall and the operating device with the tail piece. At the level of the afterburning conduit, the hammer and the cylinder have the inner groove chambers which are periodically communicated between each other via the bypassing conduit so as the length of the inner groove chamber on cylinder is less than the hammer's length. On the side tube surface, the radial channel is made to communicate periodically the inner groove chamber in the hammer with the tube longitudinal throttle conduit which is provided with the triggering throttle conduit from the device's side.

EFFECT: impact effect of pneumatic device on treated medium is increased.

2 cl, 2 dwg

Up!