CN204266916U - A kind of hydraulic drill rig top hammer formula impacts rotary power head - Google Patents
A kind of hydraulic drill rig top hammer formula impacts rotary power head Download PDFInfo
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- CN204266916U CN204266916U CN201420692222.XU CN201420692222U CN204266916U CN 204266916 U CN204266916 U CN 204266916U CN 201420692222 U CN201420692222 U CN 201420692222U CN 204266916 U CN204266916 U CN 204266916U
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Abstract
A kind of hydraulic drill rig top hammer formula impacts rotary power head, comprise beater mechanism and rotating mechanism, described beater mechanism comprises strike group, group of frequencies and spacing group, described rotating mechanism comprises rotation group, makes group, splined shaft, makes snubber, described spacing group is connected with strike group and group of frequencies respectively by oil circuit, the piston movement of described spacing group of control strike group, described group of frequencies is connected with strike group and controls the striking frequency of the piston of strike group.The advantages such as it is simple that the utility model has structure, and frequency of impact is fast, ballistic work is large, it is wide to adapt to, the life-span is long, can be practically applicable on hydraulic jumbolter, and in geotechnical anchor engineering, what run in a large number is fractured rock, sand pebble layer, and percussion revolution drilling method is one of optimal selection.
Description
Technical field
The utility model relates to a kind of hydraulic drill rig top hammer formula and impacts rotary power head.
Background technology
Hydraulic jumbolter is mainly used in the engineerings such as the reinforcing of massif slope treatment anchor cable, tunnel barrel vault advanced support, foundation ditch slope bolt piles anchor cable, anti-float anchor rod, geothermal pump well, subgrade strengthening, hydroelectric project dam foundation and dam body Anti-seeping technology, drain hole, mine and quarry blast hole, miniature stake holes such as power station, highway and railway.Conventional hydraulic jumbolter unit head is rotary type hydraulic unit head, does not possess impact function, is running into rock stratum, and during sand pebble layer, need by down-the-hole air hammer to carry out brokenly rock operation, need coupling air compressor machine and impactor, operating expenses is high, and operating efficiency is low.Some producers employing hydraulic breaking hammer is received after swinging unit head and is carried out impact function expansion, and because hydraulic breaking hammer frequency of impact is low, single-impact power is large, and entirety lacks hits buffering, so easily damage unit head.By the research to crushing rock formation operation, this revolution of rotary-percussive drilling and combined impulse is adopted to break the drilling method of rock, percussion revolution drilling method mainly passes to low-energy for high frequency shock pulse load carbide drill or the diamond bit of common rotary drilling, by axial load and other load comprehensive function of constantly movement, cut, grinding or rock crushing, simultaneously under rhythmical dynamic load effect, make catalase, and form additional fatigue stress at rock interior, and in geotechnical anchor engineering, what run in a large number is fractured rock, sand pebble layer.
Utility model content
The purpose of this utility model is to overcome the deficiency of prior art and provides a kind of Rock Bolting Problems solved under different surrounding rock roof condition, and frequency of impact is fast, greatly reduces cost, and the hydraulic drill rig top hammer formula that improve efficiency impacts rotary power head.
The purpose of this utility model is achieved by following technical proposals:
A kind of hydraulic drill rig top hammer formula impacts rotary power head, comprise beater mechanism and rotating mechanism, described beater mechanism comprises strike group, group of frequencies and spacing group, described rotating mechanism comprises rotation group, beat group, splined shaft, make snubber, described spacing group is connected with strike group and group of frequencies respectively by oil circuit, the piston movement of described spacing group of control strike group, described group of frequencies is connected with strike group and controls the striking frequency of the piston of strike group, described strike group comprises pedestal and is arranged on the piston in pedestal, described rotation group comprises gear-box and supporting seat, described group of beating comprises down and beats shell, retainer ring and beat piston, described gear-box is arranged on the bracket of rig by supporting seat, described gear-box is driven by hydraulic motor and runs, inner chamber is provided with in the middle part of described gear-box, in the inner chamber of described gear-box, splined shaft is installed, described splined shaft is by the internal gear driven rotary of gear-box, described pedestal is arranged on above described gear-box, the piston in pedestal is made to be placed in directly over the splined shaft of gear-box inner chamber, described shell of beating is arranged on below described gear-box, described retainer ring is fixed on down to be beaten in shell, and will to be arranged in retainer ring and be sleeved on outside described splined shaft beat piston and splined shaft is fixed, the step of the maximum outside diameter of described splined shaft is spacing to be beaten on piston described, when described strike group piston moves downward, impact splined shaft, piston plays buffering effect when described splined shaft is subject to impacting is played simultaneously.
Gear wheel, internal gear and pinion is provided with in described gear-box, described pinion is arranged in described hydraulic motor rotating shaft, described pinion engages with gear wheel external tooth, described internal gear is arranged in gear wheel, described internal gear external tooth engages with described gear wheel internal tooth and matches, it is outer and coordinate with the keyway of splined shaft thus drive splined shaft to rotate that described inner gear housing is contained in described splined shaft, and described splined shaft can slide axially in internal gear.
Described strike group is provided with height transfer valve, described gear-box is provided with two hydraulic motors, two control ends of described high low speed transfer valve rotate with first respectively and control mouth and second and rotate and control mouth and be connected, two oil-ins of high low speed transfer valve rotate oil-in and second respectively and rotate oil-in and be connected with first, first hydraulic motor rotates oil-in with first respectively and high low speed transfer valve is connected, second hydraulic motor rotates oil-in with second respectively and high low speed transfer valve is connected, when first rotates the control of control mouth, first rotates oil-in oil-feed successively by high low speed transfer valve, first hydraulic motor, second hydraulic motor, rotate on the oil circuit of oil-in by high low speed transfer valve to second again, now two motors are cascaded and rotate forward, when second rotates oil-in oil-feed, successively by high low speed transfer valve, second hydraulic motor, first hydraulic motor, rotate on the oil circuit of oil-in by high low speed transfer valve to first again, now two motors are cascaded and reverse.When second rotates the control of control mouth, during the first rotation oil-in oil-feed, hydraulic oil is simultaneously by the first hydraulic motor and the second hydraulic motor, and now two motors are connected in parallel and rotate forward, on the contrary reversion.
Described piston of beating is provided with an oil-in and an oil-out, and described oil-in is connected with strike oil-in, oil-out is provided with throttle joint and makes snubber.
Described spacing group comprises valve body and spool, described strike group comprises front pedestal, piston, anterior bumper, posterior bumper and rear pedestal, described spacing group is arranged on front pedestal, described front pedestal one end is arranged on rotating mechanism rotating basis, the other end is installed with described rear pedestal, described piston is arranged in the inner chamber of described front pedestal and rear pedestal, described anterior bumper is arranged on described front pedestal, described posterior bumper is installed in the rear on pedestal, described valve body is provided with oil-in and oil-out, described spool is arranged in described valve body, the first oil pocket is provided with between described spool upper end and valve body, the second oil pocket is provided with in the middle part of described spool and between valve body, 3rd oil pocket and the 4th oil pocket, the 5th oil pocket is provided with bottom described spool and between valve body, described piston nose is provided with the first groove and is communicated with the 6th oil pocket on front pedestal, described piston rear end is provided with the second groove and is communicated with the 7th oil pocket formed between front pedestal and rear pedestal, described first oil pocket is communicated with the 6th oil pocket by oil circuit, described 6th oil pocket is connected with anterior bumper by oil circuit, described second oil pocket is communicated with the 7th oil pocket by oil circuit, described 3rd oil pocket is connected with posterior bumper by oil circuit, when described spool is placed in upper, described first oil pocket is communicated with oil-in, described second oil pocket is communicated with the 3rd oil pocket, when spool is placed in bottom, described 6th oil pocket is communicated with the 4th oil pocket by the first groove of described piston, described second oil pocket is not communicated with the 3rd oil pocket, described 3rd oil pocket is communicated with oil-out, described first oil pocket is communicated with the second oil pocket.
The stress surface of described piston in the 6th oil pocket is less than the stress surface of piston in the 7th oil pocket, the lifting surface area of described spool in the 4th oil pocket is less than the lifting surface area of spool in the first oil pocket, the lifting surface area of described spool in the 5th oil pocket is greater than the lifting surface area of spool in the first oil pocket, and the stress surface of described spool in the first oil pocket and the stress surface sum of spool in the 4th oil pocket are greater than the stress surface of spool in the 5th oil pocket.
Described group of frequencies comprises the frequency valve body be arranged on front pedestal, in the plunger shaft of described frequency valve body, frequency piston is installed, the upper end of described frequency piston by spring supporting on the upper end cover of frequency valve body, lower end is supported on the bottom end cover of frequency valve body, the lower end sidewall of described frequency piston is provided with between groove and frequency valve body and forms the 8th oil pocket, described 8th oil pocket is communicated with control port, described frequency valve body is provided with four FREQUENCY CONTROL hydraulic fluid ports vertically, the upper end sidewall of described frequency piston is provided with between groove and frequency valve body and forms the 9th oil pocket, when frequency piston is at initial position, four described FREQUENCY CONTROL hydraulic fluid ports are all communicated with the 9th oil pocket, frequency piston is by described control port input pressure controlled frequency piston up-down, along with frequency piston move upward until topmost time, close three FREQUENCY CONTROL hydraulic fluid ports below successively, another FREQUENCY CONTROL hydraulic fluid port is communicated with the 4th oil pocket all the time.
Describedly make snubber and described forward and backward snubber is while fill the snubber of high pressure nitrogen another side topping up force feed.
Owing to adopting such scheme, beater mechanism and rotating mechanism combine by this device, existing jumbolter increases an impact function, under normal roof condition, rotary jumbolter still punches in a rotative pattern, when needs are aided with impact, the piston of this device by beater mechanism is impacted the splined shaft on rotating mechanism, thus ensure the advanced rock fracture in dynamic indentation when rotary drilling, hole bed rock stone is made to produce micro crack, to make rotary drilling more effective, when running into local competent bed, based on percussive drilling, give full play to the feature of impact cutting, and be aided with rotary cutting, thus the Rock Bolting Problems under effective solution different surrounding rock roof condition, greatly reduce cost, improve efficiency,
This device by being arranged on rotation group beats group, makes to play in work piston plays buffering effect when splined shaft is subject to impacting, prevents rigid collision, improve unit head application life, simultaneously can reverse impact at lifting drilling rod, to make drilling rod loosen, be convenient to dismounting drilling rod;
This device controls the striking frequency of strike group by the group of frequencies be arranged in strike group, the lifting surface area changing piston and oil pocket is moved by control port controlled frequency piston, thus can striking frequency be controlled, also can improve piston striking frequency simultaneously, in geotechnical anchor engineering, can adjust frequency according to different rock stratum situations, improve blow efficiency and hitting dynamics, reduce costs;
This device, by height transfer valve, at work, switches valve port position by rotating control mouth, the connected mode of two hydraulic motors described in change, time in parallel, described rotation group exports as low speed and large torque, during series connection, described rotation group exports as high speed low torque
The strike group of this device have employed two snubbers, to be coordinated with spool by snubber thus control piston moves, improve the frequency of piston movement, this device make snubber and forward and backward snubber by the compression of gas, the effect played buffering and provide moment kinetic energy of expanding.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is hydraulic schematic diagram of the present utility model.
Fig. 3 is the structural representation that the utility model strike group piston is in initial position.
Fig. 4 is the structural representation of the utility model spacing group of spool commutation, backward stroke of the piston.
Fig. 5 is the structural representation that the utility model is connected with group of frequencies.
Detailed description of the invention
Below in conjunction with accompanying drawing, illustrate that hydraulic drill rig top hammer formula impacts the detailed description of the invention of rotary power head.
As shown in Figures 1 to 5, a kind of hydraulic drill rig top hammer formula impacts rotary power head, comprise beater mechanism and rotating mechanism, described beater mechanism comprises strike group 1, group of frequencies and spacing group 2, described rotating mechanism comprises rotation group, beat group, splined shaft 6, make snubber, described spacing group 2 is connected with strike group and group of frequencies respectively by oil circuit, described spacing group 2 piston movement controlling strike group 1, described group of frequencies is connected with strike group and controls the striking frequency of the piston of strike group 1, described strike group 1 comprises pedestal and is arranged on the piston 14 in pedestal, described rotation group comprises gear-box 4 and supporting seat 7, described group of beating comprises down and beats shell 5, retainer ring 52 and beat piston 51, described gear-box 4 is arranged on the bracket of rig by supporting seat 7, described gear-box 4 is driven by hydraulic motor 3 and runs, inner chamber is provided with in the middle part of described gear-box 4, in the inner chamber of described gear-box 4, splined shaft 6 is installed, described splined shaft 6 is by internal gear 42 driven rotary of gear-box 4, described pedestal is arranged on above described gear-box 4, the piston 14 in pedestal is made to be placed in directly over the splined shaft 6 of gear-box 4 inner chamber, described shell 5 of beating is arranged on below described gear-box 4, described retainer ring 52 is fixed on down to be beaten in shell 5, and will to be arranged in retainer ring 52 and the piston 51 of beating be sleeved on outside described splined shaft 6 is fixed with splined shaft 6, the step of the maximum outside diameter of described splined shaft 6 is spacing to be beaten on piston 51 described, when described strike group 1 piston 14 moves downward, impact splined shaft 6, piston 51 plays buffering effect when described splined shaft 6 is subject to impacting is played simultaneously,
Gear wheel 41, internal gear 42 and pinion 43 is provided with in described gear-box 4, described pinion 43 is arranged in the rotating shaft of described hydraulic motor 3, described pinion 43 engages with gear wheel 41 external tooth, described internal gear 42 is arranged in gear wheel 41, described internal gear 42 external tooth engages with described gear wheel 41 internal tooth and matches, it is outer and coordinate with the keyway of splined shaft thus drive splined shaft 6 to rotate that described internal gear 42 is sleeved on described splined shaft 6, and described splined shaft 6 can slide axially in internal gear.
Described strike group 1 is provided with height transfer valve 8, described gear-box 4 is provided with two hydraulic motors 3, two control ends of described high low speed transfer valve 8 rotate with first respectively and control mouth and second and rotate and control mouth and be connected, two oil-ins of high low speed transfer valve rotate oil-in and second respectively and rotate oil-in and be connected with first, first hydraulic motor rotates oil-in with first respectively and high low speed transfer valve is connected, second hydraulic motor rotates oil-in with second respectively and high low speed transfer valve is connected, when first rotates the control of control mouth, first rotates oil-in oil-feed successively by high low speed transfer valve, first hydraulic motor, second hydraulic motor, rotate on the oil circuit of oil-in by high low speed transfer valve to second again, now two motors are cascaded and rotate forward, when second rotates oil-in oil-feed, successively by high low speed transfer valve, second hydraulic motor, first hydraulic motor, rotate on the oil circuit of oil-in by high low speed transfer valve to first again, now two motors are cascaded and reverse.When second rotates the control of control mouth, during the first rotation oil-in oil-feed, hydraulic oil is simultaneously by the first hydraulic motor and the second hydraulic motor, and now two motors are connected in parallel and rotate forward, on the contrary reversion.
Described piston 51 of beating is provided with an oil-in and an oil-out, and described oil-in is connected with strike oil-in, oil-out is provided with throttle joint 53 and makes snubber 54.
Comprise spacing group 2, spool 212, front pedestal 12, piston 14, anterior bumper 15, posterior bumper 16 and rear pedestal 13, described spacing group 2 is arranged on front pedestal 12, described front pedestal 12 one end is arranged on rotating mechanism rotating basis, the other end is installed with described rear pedestal 13, described piston 14 is arranged on described front pedestal 12 with the inner chamber of rear pedestal 13, described anterior bumper 15 is arranged on described front pedestal 12, described posterior bumper 16 is installed in the rear on pedestal 13, described spacing group 2 comprises valve body and spool 212, described valve body is provided with oil-in 211 and oil-out 213, described spool 212 is arranged in described valve body, the first oil pocket 214 is provided with between described spool 212 upper end and valve body, the second oil pocket 215 is provided with in the middle part of described spool and between valve body, 3rd oil pocket 216 and the 4th oil pocket 217, the 5th oil pocket 218 is provided with bottom described spool and between valve body, described piston 14 front end is provided with the first groove and is communicated with the 6th oil pocket 17 on front pedestal, described piston rear end is provided with the second groove and is communicated with the 7th oil pocket 18 formed between front pedestal and rear pedestal, described first oil pocket 214 is communicated with the 6th oil pocket 17 by oil circuit, described 6th oil pocket 17 is connected with anterior bumper 15 by oil circuit, described second oil pocket 215 is communicated with the 7th oil pocket 18 by oil circuit, described 3rd oil pocket 216 is connected with posterior bumper 16 by oil circuit, when described spool 212 is placed in upper, described first oil pocket 214 is communicated with oil-in, described second oil pocket 215 is communicated with the 3rd oil pocket 216, when spool 212 is placed in bottom, described 6th oil pocket 17 is communicated with the 4th oil pocket 217 by the first groove of described piston 14, described second oil pocket 215 is not communicated with the 3rd oil pocket 216, described 3rd oil pocket 216 is communicated with oil-out 213, described first oil pocket 214 is communicated with the second oil pocket 215.The stress surface of described piston 14 in the 6th oil pocket 17 is less than the stress surface of piston in the 7th oil pocket 18, and the stress surface of described spool 212 in the first oil pocket 214 and the stress surface sum of spool 212 in the 4th oil pocket 217 are greater than the stress surface of spool 212 in the 5th oil pocket 218.
As shown in Figure 3, this device can also arrange group of frequencies 9, described group of frequencies 9 comprises the frequency valve body be arranged on front pedestal, in the plunger shaft of described frequency valve body, frequency piston 93 is installed, the upper end of described frequency piston 93 is supported on the upper end cover 9 of frequency valve body by spring 92, lower end is supported on the bottom end cover of frequency valve body, the lower end sidewall of described frequency piston 93 is provided with between groove and frequency valve body and forms the 8th oil pocket 99, described 8th oil pocket 99 is communicated with control port 98, described frequency valve body is provided with four FREQUENCY CONTROL hydraulic fluid ports vertically, the upper end sidewall of described frequency piston 93 is provided with between groove and frequency valve body and forms the 9th oil pocket, when frequency piston is at initial position, four described FREQUENCY CONTROL hydraulic fluid ports are all communicated with the 9th oil pocket, frequency piston is by described control port 93 input pressure controlled frequency piston up-down, along with frequency piston move upward until topmost time, close three FREQUENCY CONTROL hydraulic fluid ports below successively, another FREQUENCY CONTROL hydraulic fluid port is communicated with the 4th oil pocket all the time.
The operating principle of this device is described as follows:
The principle that strike group, spacing group and group of frequencies coordinate:
A, initial situation:
Piston 14 is bottom (Gravitative Loads), spool 212 is topmost (action of hydraulic force), the lifting surface area of spool 212 in the 4th oil pocket 217 is less than the lifting surface area of spool 212 in the first oil pocket 214, the stress surface of described spool 212 in the first oil pocket 214 and the stress surface sum of spool 212 in the 4th oil pocket 217 are greater than the stress surface of spool 212 in the 5th oil pocket 218, and the stress surface of described piston 14 in the 6th oil pocket 17 is less than the stress surface of piston in the 7th oil pocket 18.
B, piston 14 backhaul:
Hydraulic oil enters spacing group 2 from oil-in 211, the 6th oil pocket 17 is entered by oil duct, 7th oil pocket 18 is connected with outlet, piston 14 moves upward, anterior bumper 15 pressurized accumulation of energy simultaneously, and the hydraulic oil of the 7th oil pocket flows out from outlet, because outlet aperture sectional area and posterior bumper import aperture sectional area are less than the aperture sectional area of the 7th oil pocket, cause posterior bumper pressurized, play the effect of buffering and back pressure, prevent piston 14 from clashing into the end cap of rear pedestal 13;
C, spool 212 commutate:
When piston 14 move upward to the 6th oil pocket 17 be communicated with the 4th oil pocket time, now the first oil pocket 214, the 4th oil pocket 217 and the 5th oil pocket 218 are all subject to high pressure, because the stress surface of described spool 212 in the first oil pocket 214 and the stress surface sum of spool 212 in the 4th oil pocket 217 are greater than the stress surface of spool 212 in the 5th oil pocket 218, thus spool 212 is moved downward;
D, piston 14 stroke:
After spool 212 moves downward certain distance, the hydraulic oil of oil-in 211 enters the 6th oil pocket 17 and the 7th oil pocket 18 simultaneously, because the stress surface of described piston 14 in the 6th oil pocket 17 is less than the stress surface of piston in the 7th oil pocket 18, piston 14 is moved downward, anterior bumper 15 provides a kinetic energy instantaneously simultaneously, promote piston 14 to move downward rapidly, impact acting;
E, spool 212 commutate;
While piston 14 moves downward, the 6th oil pocket 17 and the 4th oil pocket 217 can be made to disconnect, now the first oil pocket 214 and the 5th oil pocket 218 are by high pressure, because the lifting surface area of described spool 212 in the 5th oil pocket 218 is greater than the lifting surface area of spool 212 in the first oil pocket 214, spool 212 can valve move;
Complete a working cycles like this, when stopping rig, the meta technical ability controlling the hydraulic valve of unit head is O shape, and import and export oil circuit all closed, anterior bumper 15 provides high pressure, makes spool 212 keep original state always.
During group of frequencies work, hydraulic oil enters spacing group 2 from oil-in, enter in the 6th oil pocket 17 by oil duct, oil pressure promotes piston 14 and moves upward, when piston 14 move upward to be communicated with first frequency control port 97 time, hydraulic oil enters in spacing group 2 by the 4th FREQUENCY CONTROL hydraulic fluid port 94, when in spacing group 2 during valve body switching direction, inlet high pressure oil enters the 6th oil pocket 17 and the 7th oil pocket 18 simultaneously, lifting surface area due to the 7th oil pocket 18 is less than the lifting surface area of the 6th oil pocket 17, piston 14 is moved downward, moves back and forth.When the oil pressure of control port 98 increases, frequency piston 93 overcomes spring 92 power and moves upward, frequency piston 93 can block first frequency control port 97, piston 14 is just communicated with when moving upward to second frequency control port 96, switching direction, thus change the movement travel of piston 14, the like, piston 14 is communicated with when moving upward to the 3rd FREQUENCY CONTROL hydraulic fluid port 95, switching direction, thus make the longer striking frequency of piston stroke slower, hitting power is larger, in geotechnical anchor engineering, can adjust frequency according to different rock stratum situations, improve blow efficiency and hitting dynamics, reduce costs.
Strike group, spacing group and group of frequencies and rotation group, to beat the principle that assembly closes as follows:
Hydraulic oil enters while spacing group 2 by oil-in 211, also enter down and beat in group, owing to playing group outlet, throttle joint 53 is installed, the flow of the oil entered is greater than the flow of outlet, the piston 51 of beating beaten in group is moved upward, promote splined shaft 6 holding position constant, when the strike piston 14 of strike group impacts splined shaft 6, the flow beaten in group can not flow out fast and fall to beat the effect that snubber 54 serves buffering jointly under the effect of throttle joint 53.
When by FREQUENCY CONTROL mouth, oil pressure enters in group of frequencies 9, the spring pressure in oil pressure counter group of frequencies 9, close oil duct junction, its position be communicated with strike group 1 ante-chamber is changed, changes the stroke hitting piston, play the effect controlling strike group striking frequency.
Claims (8)
1. a hydraulic drill rig top hammer formula impacts rotary power head, comprise beater mechanism and rotating mechanism, described beater mechanism comprises strike group, group of frequencies and spacing group, described rotating mechanism comprises rotation group, makes group, splined shaft, makes snubber, described spacing group is connected with strike group and group of frequencies respectively by oil circuit, the piston movement of described spacing group of control strike group, described group of frequencies is connected with strike group and controls the striking frequency of the piston of strike group, it is characterized in that:
Described strike group comprises pedestal and is arranged on the piston in pedestal, described rotation group comprises gear-box and supporting seat, described group of beating comprises down and beats shell, retainer ring and beat piston, described gear-box is arranged on the bracket of rig by supporting seat, described gear-box is driven by hydraulic motor and runs, inner chamber is provided with in the middle part of described gear-box, in the inner chamber of described gear-box, splined shaft is installed, described splined shaft is by the internal gear driven rotary of gear-box, described pedestal is arranged on above described gear-box, the piston in pedestal is made to be placed in directly over the splined shaft of gear-box inner chamber, described shell of beating is arranged on below described gear-box, described retainer ring is fixed on down to be beaten in shell, and will to be arranged in retainer ring and be sleeved on outside described splined shaft beat piston and splined shaft is fixed, the step of the maximum outside diameter of described splined shaft is spacing to be beaten on piston described, when described strike group piston moves downward, impact splined shaft, piston plays buffering effect when described splined shaft is subject to impacting is played simultaneously.
2. hydraulic drill rig top hammer formula according to claim 1 impacts rotary power head, it is characterized in that: in described gear-box, be provided with gear wheel, internal gear and pinion, described pinion is arranged in described hydraulic motor rotating shaft, described pinion engages with gear wheel external tooth, described internal gear is arranged in gear wheel, described internal gear external tooth engages with described gear wheel internal tooth and matches, it is outer and coordinate with the keyway of splined shaft thus drive splined shaft to rotate that described inner gear housing is contained in described splined shaft, and described splined shaft can slide axially in internal gear.
3. hydraulic drill rig top hammer formula according to claim 1 impacts rotary power head, it is characterized in that: described strike group is provided with height transfer valve, described gear-box is provided with two hydraulic motors, two control ends of described high low speed transfer valve rotate with first respectively and control mouth and second and rotate and control mouth and be connected, two oil-ins of high low speed transfer valve rotate oil-in and second respectively and rotate oil-in and be connected with first, first hydraulic motor rotates oil-in with first respectively and high low speed transfer valve is connected, second hydraulic motor rotates oil-in with second respectively and high low speed transfer valve is connected, when first rotates the control of control mouth, first rotates oil-in oil-feed successively by high low speed transfer valve, first hydraulic motor, second hydraulic motor, rotate on the oil circuit of oil-in by high low speed transfer valve to second again, now two motors are cascaded and rotate forward, when second rotates oil-in oil-feed, successively by high low speed transfer valve, second hydraulic motor, first hydraulic motor, rotate on the oil circuit of oil-in by high low speed transfer valve to first again, now two motors are cascaded and reverse.When second rotates the control of control mouth, during the first rotation oil-in oil-feed, hydraulic oil is simultaneously by the first hydraulic motor and the second hydraulic motor, and now two motors are connected in parallel and rotate forward, on the contrary reversion.
4. hydraulic drill rig top hammer formula according to claim 1 impacts rotary power head, it is characterized in that: described piston of beating is provided with an oil-in and an oil-out, described oil-in is connected with strike oil-in, oil-out is provided with throttle joint and makes snubber.
5. impact rotary power head according to the hydraulic drill rig top hammer formula one of Claims 1-4 Suo Shu, it is characterized in that: described spacing group comprises valve body and spool, described strike group comprises front pedestal, piston, anterior bumper, posterior bumper and rear pedestal, described spacing group is arranged on front pedestal, described front pedestal one end is arranged on rotating mechanism rotating basis, the other end is installed with described rear pedestal, described piston is arranged in the inner chamber of described front pedestal and rear pedestal, described anterior bumper is arranged on described front pedestal, described posterior bumper is installed in the rear on pedestal, described valve body is provided with oil-in and oil-out, described spool is arranged in described valve body, the first oil pocket is provided with between described spool upper end and valve body, the second oil pocket is provided with in the middle part of described spool and between valve body, 3rd oil pocket and the 4th oil pocket, the 5th oil pocket is provided with bottom described spool and between valve body, described piston nose is provided with the first groove and is communicated with the 6th oil pocket on front pedestal, described piston rear end is provided with the second groove and is communicated with the 7th oil pocket formed between front pedestal and rear pedestal, described first oil pocket is communicated with the 6th oil pocket by oil circuit, described 6th oil pocket is connected with anterior bumper by oil circuit, described second oil pocket is communicated with the 7th oil pocket by oil circuit, described 3rd oil pocket is connected with posterior bumper by oil circuit, when described spool is placed in upper, described first oil pocket is communicated with oil-in, described second oil pocket is communicated with the 3rd oil pocket, when spool is placed in bottom, described 6th oil pocket is communicated with the 4th oil pocket by the first groove of described piston, described second oil pocket is not communicated with the 3rd oil pocket, described 3rd oil pocket is communicated with oil-out, described first oil pocket is communicated with the second oil pocket.
6. hydraulic drill rig top hammer formula according to claim 5 impacts rotary power head, it is characterized in that: the stress surface of described piston in the 6th oil pocket is less than the stress surface of piston in the 7th oil pocket, the lifting surface area of described spool in the 4th oil pocket is less than the lifting surface area of spool in the first oil pocket, the lifting surface area of described spool in the 5th oil pocket is greater than the lifting surface area of spool in the first oil pocket, and the stress surface of described spool in the first oil pocket and the stress surface sum of spool in the 4th oil pocket are greater than the stress surface of spool in the 5th oil pocket.
7. hydraulic drill rig top hammer formula according to claim 5 impacts rotary power head, it is characterized in that: described group of frequencies comprises the frequency valve body be arranged on front pedestal, in the plunger shaft of described frequency valve body, frequency piston is installed, the upper end of described frequency piston by spring supporting on the upper end cover of frequency valve body, lower end is supported on the bottom end cover of frequency valve body, the lower end sidewall of described frequency piston is provided with between groove and frequency valve body and forms the 8th oil pocket, described 8th oil pocket is communicated with control port, described frequency valve body is provided with four FREQUENCY CONTROL hydraulic fluid ports vertically, the upper end sidewall of described frequency piston is provided with between groove and frequency valve body and forms the 9th oil pocket, when frequency piston is at initial position, four described FREQUENCY CONTROL hydraulic fluid ports are all communicated with the 9th oil pocket, frequency piston is by described control port input pressure controlled frequency piston up-down, along with frequency piston move upward until topmost time, close three FREQUENCY CONTROL hydraulic fluid ports below successively, another FREQUENCY CONTROL hydraulic fluid port is communicated with the 4th oil pocket all the time.
8. hydraulic drill rig top hammer formula according to claim 5 impacts rotary power head, it is characterized in that: describedly make snubber and described forward and backward snubber is the snubber filling high pressure nitrogen another side topping up force feed.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420692222.XU CN204266916U (en) | 2014-11-18 | 2014-11-18 | A kind of hydraulic drill rig top hammer formula impacts rotary power head |
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| CN201420692222.XU CN204266916U (en) | 2014-11-18 | 2014-11-18 | A kind of hydraulic drill rig top hammer formula impacts rotary power head |
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| CN204266916U true CN204266916U (en) | 2015-04-15 |
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| CN (1) | CN204266916U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104453704A (en) * | 2014-11-18 | 2015-03-25 | 长沙天和钻具机械有限公司 | Top hammer type impact rotary power head of hydraulic drilling machine |
-
2014
- 2014-11-18 CN CN201420692222.XU patent/CN204266916U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104453704A (en) * | 2014-11-18 | 2015-03-25 | 长沙天和钻具机械有限公司 | Top hammer type impact rotary power head of hydraulic drilling machine |
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| AV01 | Patent right actively abandoned |
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| C25 | Abandonment of patent right or utility model to avoid double patenting |