CN2031444U - Springless double-action hydraulic shock device - Google Patents

Abstract

The utility model relates to a springless double-action hydraulic shock device, comprising an upper contact, a float valve body, a float valve, a middle contact, hammer sleeves, a piston hammer, an anvil seat, and hexagonal sleeves. The piston hammer has a flow regulating valve which can move with the piston hammer and slide in the keyway of the piston hammer. The utility model has the advantages of simple structure, easy fabrication, high reliability, easy starting, high ability of anti-back pressure, big flowing cross-section, little water resistance, big working range of pump volume, and wide working range of impulsive work and impulsive frequency. The hammer can beat the anvil reliably and make good use of impact energy. The utility model can easily satisfy the requirement of various strata, various drilling methods, and various situations in holes to surge characteristic.

Description

Springless double-action hydraulic shock device

The utility model relates to boring means in a kind of hole of geological prospecting rock drilling, a kind of no spring double acting hydraulic impacter that particularly relates to.

Hydraulic impacter can be divided into positive interaction, reaction, double acting three major types type by its operating principle.It is at present external that main what adopt is the positive interaction hydraulic impacter, domestic main employing be positive interaction hydraulic impacter and double acting hydraulic impacter.The positive interaction hydraulic impacter has many good qualities, from the configuration aspects analysis, when its topmost advantage is the downward work done of block stamp, can utilize water hammer energy huge in the hyperbaric chamber, but the topmost problem that this impactor exists is that various springs must be arranged, the mainspring of particularly controlling the block stamp motion is a brute spring, the fatiguability of under the high frequency heavy load, working, make impactor unstable properties, easy fracture, application life is low, offset hydraulic action, reduced block stamp end speed and ballistic work, and liquid is can utilization rate low, the working barrel amount is had relatively high expectations, and pump pressure is bigger.The existing similar no spring formula double acting hydraulic impacter of China has the no spring formula double acting hydraulic impacter of YS series at present.The no spring formula double acting hydraulic impacter of YS series is by shell, valve, block stamp, anvil, restrictor ring, compositions such as spline housing, has no spring, few easy workout part, advantages of simple structure and simple, but because this impactor has adopted the restrictor ring that is fixed on the anvil, a large amount of fluids are discharged by the throttle orifice on the restrictor ring, water resistance is big, so itself back pressure is arranged during impactor work, cause system's pump pressure to increase, released part pump amount during impactor work simultaneously, thereby the priming pump amount is bigger, the block stamp backstroke is slow, reduced frequency of impact, block stamp is impeded drainage when impact stroke, must reduce the impact end speed, impacting anvil moment generation water cushion, block stamp " soft landing ", reduced the transmission efficiency of ballistic work and impact energy, big pump amount easily causes the block stamp pulsation not hit anvil when working, to match the restrictor ring of different size during work according to drilling condition, match the improper best-of-breed technology performance that is difficult to bring into play impactor, the apolegamy trouble, be difficult for grasping, higher to driller's competency profiling, the throttle orifice aperture in the restrictor ring is little, so the well-flushing mass of medium is required height, impactor is difficult to operate as normal when using the flushing liquor that rock dust is many and viscosity is big.The combination sealing by joint ring, zero RunddichtringO and filler (packing) has been adopted in the sealing of the upper and lower cylinder of the YS no spring formula double acting hydraulic impacter of series, loading and unloading bother, elasticity is little, easy to wear, the adjustment formality is many, tup in the block stamp and last lower piston rod are to adopt conical surface wedging mechanism, strengthen free travel during impact easily, influence impact characteristics, in the many mud of rock dust, work and take off hammer easily, impactor is quit work.

The purpose of this utility model be for provide a kind of simple in structure, easy to manufacture, starting easily, reliable operation, anti-back pressure ability is strong, the water flowing section is big, water resistance is little, pump amount working range is big, ballistic work and frequency of impact working range satisfy situation impact characteristic in all kinds of stratum, various drilling method, the various hole extensively, easily needs, block stamp can hit anvil reliably, more effectively utilizes the no spring double acting hydraulic impacter of impact energy.

The utility model is achieved like this: the utility model is by top connection, float valve body, float valve, center tap, the hammer cover, the piston block stamp, anvil is sat and is formed (referring to Fig. 1), the piston block stamp comprises lower piston rod and tup, be equipped with on the piston block stamp can with the piston block stamp move and the choke valve that can in the cotter way on the piston block stamp, slide (referring to Fig. 1, Fig. 8), the lower end of choke valve can be stretched among the anvil seat, because the utility model has adopted choke valve, so kept whole water flowing section basically identical of the present utility model, water resistance is reduced to bottom line, because choke valve is movable, when the piston block stamp arrives top dead-centre, choke valve takeoffs, thereby cavity of resorption is opened during piston block stamp driving stroke, the discharging of low hydraulic fluid stream is smooth, so block stamp hits and does not produce water cushion when boring, choke valve stretches into anvil and sits, so speed is fast, has improved frequency of impact.

Float valve body in the utility model is provided with the passage (participating in Fig. 1, Fig. 5) that turns round that commutates, so the float valve working stability is reliable, is difficult for stuck in the more mud of sand content.

The last lower piston rod and the tup of the composition piston block stamp in the utility model are an integral body, so not only reduced number of spare parts, and keep free travel constant, and impact characteristics is stable.

Axle is housed with sealing (referring to Fig. 6) on the center tap in the utility model, the dress hole so wear-resisting, is difficult for stuckly with sealing (referring to Fig. 7) on the piston block stamp, and elasticity is big, and self-styled ability is strong, and long service life is converted easily.

Hammer in the utility model puts thread connection six sides covers (referring to Fig. 1, Fig. 4), and anvil is sat in the hexagonal hole that passes in the six sides cover, and processing hexagonal cover technology is simple.

The utlity model has following advantage:

1. kept whole water flowing section basically identical of the present utility model, water resistance has been reduced to bottom line.

2. the utility model water flowing area is big, allows to use big pump amount, and the optional scope of impact characteristics is wide.

3. the utility model does not produce back pressure.

4. starting is easy, and the pump amount is little, and pump pressure is low.

5. choke valve is movable (except that moving with the piston block stamp, also can in the cotter way on the piston block stamp, slide), when the piston block stamp arrives top dead-centre, choke valve takeoffs, during piston block stamp stroke, cavity of resorption is opened, and the discharging of low hydraulic fluid stream is smooth, does not produce water cushion when the piston block stamp hits anvil.

6. the lower end of choke valve can be stretched in the anvil seat, and piston block stamp backhaul beginning acceleration is big, does not reduce hydraulic pressure in the backhaul overall process, and speed is fast, has improved frequency of impact.

7. do not need to require the energy-conservation valve of apolegamy according to creeping into, simple to operate, driller grasps easily.

8. the well-flushing medium is not had specific (special) requirements, help in viscosity greatlyyer, work in the more flushing liquor of rock dust.

9. when the piston block stamp hits anvil, supervene water hammer effect one time, strengthened impact force.

That the utility model also has is simple in structure, easy to manufacture, reliable operation, pump amount working range are big, ballistic work and the frequency of impact working range is wide, the piston block stamp can hit anvil reliably, can more effectively utilize impact energy, satisfy the advantages such as needs of situation impact characteristic in all kinds of stratum, various drilling method, the various hole easily.The utility model can be used for engineering geological drilling, and the pile foundation engineering probing is in the hydrology, well, oil and core drilling, the tunnel probing etc.

Describe embodiment of the present utility model in detail below in conjunction with accompanying drawing:

Fig. 1: structural representation of the present utility model

Fig. 2: A-A profile among Fig. 1

Fig. 3: B-B profile among Fig. 1

Fig. 4: C-C profile among Fig. 1

Fig. 5: E portion enlarged drawing among Fig. 1

Fig. 6: F portion enlarged drawing among Fig. 1

Fig. 7: G portion enlarged drawing among Fig. 1

Fig. 8: choke valve structural representation in the utility model

Fig. 9: D-D sectional view among Fig. 8

Figure 10: the utility model operating principle schematic diagram (when the utility model is in suspended state).

Figure 11: the utility model operating principle schematic diagram (when the utility model is in the backstroke last current state)

Figure 12: the utility model operating principle schematic diagram (when the utility model is in the driving stroke last current state)

Each sequence number explanation among the above figure:

1 top connection, 2 float valve bodies 3 commutation passage 4 float valve spacers 5 float valves 6 center taps 7 axles that turn round are sat 27 times cylinders of 24 stroke adjustment pad 25 lower contacts, 26 upper cylinder halfs with sealing 8 hammer covers 9 piston block stamps 10 upper piston rods 11 upper pistons 12 lower piston rods 13 lower pistons 14 tups 15 cotter ways 16 holes with sealing 17 epicoeles, 18 cavity of resorptions, 19 choke valves, 20 throttle bore, 21 throttling valve pins, 22 6 square sets, 23 anvils

The utility model is by top connection 1, float valve body 2, float valve 5, center tap 6, hammer cover 8, the piston block stamp 9 that upper piston rod 10 and lower piston rod 12 and tup 14 are in aggregates, anvil is sat 23 and is formed, the passage 3 that turns round that commutates is set on the float valve body 2, between float valve body 2 and the float valve 5 float valve spacer 4 is housed, the YX profile shaft made from polyurethane rubber is housed on the center tap 6 to be made with sealing also available fourth eyeball 811 of 7(or oil resistant rubber B), cotter way 15 is arranged on the piston block stamp 9, self-sealing YX type hole is contained on the piston block stamp 9 with sealing 16, the hole can replace with zero type rubber seal with sealing 16, on have the choke valve 19 of throttle bore 20 to be contained in the cavity of piston block stamp 9, throttling valve pin 21 on the choke valve 19 passes the cotter way 15 on the piston block stamp 9, choke valve 19 not only can but also can slide in the cavity of piston block stamp 9 along cotter way 15 with 9 motions of piston block stamp, the free travel of its slip is 20 millimeters, the lower end of choke valve 19 can be stretched into anvil and sit 3～8 millimeters, thread connection has six sides cover 22 on the hammer cover 8 in the utility model, and anvil is sat 23 hexagonal holes that pass in the six sides cover 22.Piston block stamp 9 and float valve adopt the structural alloy steel hard surfacing to handle (adopting 20CrMnTi or 20CrMnMo or 20Cr steel to make usually, hard surfacing hardness HRC50～65).Hammer cover employing intensity height, the structural alloy steel pipe manufacturer (as adopting the 45MnMoB steel pipe) that toughness is good, case hardness is high, flexing resistance is strong.

When drilling tool is in suspension status (referring to Figure 10), six sides cover 22 and 25 of lower contacts have a gap, float valve 5 and piston block stamp 9, choke valve 20 is sat 23 with anvil and is all thrown off certain distance, flushing liquor freely flows at the bottom of the hole by the limbers separately on float valve 5, piston block stamp 9, the anvil seat 23, the utility model is not worked, and is convenient to cleaning bottom of hole.

At the bottom of drilling tool is pressed to the hole, six sides cover 22 contacts with lower contact 25, the bottom surface of piston block stamp 9 is sat 23 end faces with anvil and is contacted, force float valve 5 to rapidly increase to top dead-centre, simultaneously water hammer involve force piston block stamp 9 to lift under the differential pressure action that upper piston 11,13 area difference of lower piston produce to quicken up, finish the backstroke (referring to Figure 11) of piston block stamp 9 till flowing to down the passage of cylinder 27 with float valve 5 bottom surface contact cut liquid, choke valve 19 was taken up and opens cavity of resorption 18 low pressure fluid courses when piston block stamp 9 was up.

When the moment that piston block stamp 9 contacts with float valve 5, upper piston epicoele 17 produces the high pressure water hammer, water hammer ripple and hydraulic drive float valve 5 and piston block stamp 9 high-speed downstreams, when coming downwards to stroke limiting stop on the center tap 6, brakes by float valve 5, open fluid passage, float valve 5 top dead-centre that resets, piston block stamp 9 is free descending until impacting anvil seat 23 according to inertia, the stroke (referring to Figure 12) of finishing the work, impact while choke valve 19 stretches into anvil and sits 23 centre bore plugging fluid circulation roads, high pressure liquid stream enters down cylinder 27 once more, and to lift hammer up, goes round and begins again anvil is sat 23 to produce bumps, and cavity of resorption 18 low hydraulic fluids stream rows clean boring during driving stroke at the bottom of the hole.

Claims (8)

1, a kind of no spring double acting hydraulic impacter, comprise top connection (1), center tap (6), anvil seat (23), it is characterized in that in the described no spring double acting hydraulic impacter float valve body (2) being arranged, float valve (5), hammer cover (8), piston block stamp (9), piston block stamp (9) comprises upper piston rod (10), lower piston rod (12), tup (14), being equipped with on the piston block stamp (9) can be with piston block stamp (9) choke valve (19) motion and that can slide in the cotter way (15) on the piston block stamp (9), and the lower end of choke valve (19) can be stretched into anvil and sit in (23).

2, no spring double acting hydraulic impacter as claimed in claim 1 is characterized in that the float valve body (2) in the described no spring double acting hydraulic impacter is provided with the passage (3) that turns round that commutates.

3, no spring double acting hydraulic impacter as claimed in claim 1 or 2 is characterized in that upper piston rod (10), lower piston rod (12) and the tup (14) of composition piston block stamp (9) in the described no spring double acting hydraulic impacter is an integral body.

4, no spring double acting hydraulic impacter as claimed in claim 1 or 2 is characterized in that being equipped with on the center tap (6) in the described no spring double acting hydraulic impacter axle with sealing (7), the hole is housed with sealing (16) on the piston block stamp (9).

5, no spring double acting hydraulic impacter as claimed in claim 3 is characterized in that being equipped with on the center tap (6) in the described no spring double acting hydraulic impacter axle with sealing (7), the hole is housed with sealing (16) on the piston block stamp (9).

6, no spring double acting hydraulic impacter as claimed in claim 1 or 2 is characterized in that the last thread connection of hammer cover (8) in the described no spring double acting hydraulic impacter has six sides covers (22), and anvil seat (23) passes the hexagonal hole in the six sides covers (22).

7, no spring double acting hydraulic impacter as claimed in claim 4 is characterized in that the last thread connection of hammer cover (8) in the described no spring double acting hydraulic impacter has six sides covers (22), and anvil seat (23) passes the hexagonal hole in the six sides covers (22).

8, no spring double acting hydraulic impacter as claimed in claim 5 is characterized in that the last thread connection of hammer cover (8) in the described no spring double acting hydraulic impacter has six sides covers (22), and anvil seat (23) passes the hexagonal hole in the six sides covers (22).

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