CN207420518U - Hydraulic shock device - Google Patents

Abstract

The utility model is related to drilling equipment technical fields, it is a kind of hydraulic shock device, including top connection, outer barrel, torque sleeve, mandrel, hydraulic impact unit and hold and hit unit, the lower inside of top connection and the upper outside of outer barrel are fixedly installed togather, the lower inside of outer barrel and the upper inner of torque sleeve are fixedly installed togather, the lower inside limit installation of top connection has mandrel, and the outside of mandrel is equipped with the hydraulic impact unit being located above torque sleeve；Hydraulic impact unit includes power set, control valve pocket, switching sliding sleeve and impact hammer.The utility model reasonable and compact in structure, it passes through the ingenious utilization of Venturi effect, it may be such that power set can be completed to move back and forth under circulation of fluid effect, so that the utility model can operate the jarring at card resistance without above putting to put can be realized, it is particularly suitable in the pipe string of continuous oil pipe operation, it is also good with card resistance eradicating efficacy, it is easy to operate, it is easy to use, the characteristics of work efficiency is high.

Description

Hydraulic shock device

Technical field

The utility model is related to drilling equipment technical fields, are a kind of hydraulic shock devices.

Background technology

Bumper jar is usually used in cutting, bores the operations such as mill, sidetracking, salvaging as common tool in construction operation, drilling well at present, It is commonly divided into mechanical drilling jar and fluid pressure type bumper jar；During steel wire operation, can with mechanical drilling jar by above carrying after Decentralization provides bumper jar；Oil pipe operation can provide bumper jar with mechanical drilling jar by being transferred after above carrying；Also hydraulic type can be used Bumper jar is by put-on and delegated or suppresses and waits various ways, discharges internal energy storage and realizes upper jarring and lower jarring.In coiled tubing During operation, since coiled tubing pressurization is there are itself bending, when it is applied in combination with existing bumper jar, mostly existing can not Reliable jarring force is provided by above carrying or transferring, shock effect is poor, can not meet the problem of the needs of eliminating card resistance.

The content of the invention

The utility model provides a kind of hydraulic shock device, overcomes the deficiency of the above-mentioned prior art, can effectively solve Existing hydraulic shock device is mostly small there are energy storage, and shock effect is poor, can not meet the problem of the needs of eliminating card resistance.

The technical solution of the utility model is realized by following measures：A kind of hydraulic shock device, including top connection, It outer barrel, torque sleeve, mandrel, hydraulic impact unit and holds and hits unit, the lower inside of top connection and the upper outside of outer barrel are fixed It is installed together, the lower inside of outer barrel and the upper inner of torque sleeve are fixedly installed togather, the lower inside limit of top connection Position is equipped with mandrel, and the outside of mandrel is equipped with the hydraulic impact unit being located above torque sleeve；Hydraulic impact unit includes power Set, control valve pocket, switching sliding sleeve and impact hammer, the upper outside of mandrel are set with the power set below top connection, power The lower outside of set is fixedly installed togather with controlling the upper inner of valve pocket, and the upper inner of power set is equipped with upper annular groove, power The lower inside of set is equipped with lower annular groove, and the slot bottom of upper annular groove is the downlink pressure-bearing surface of power set, and the groove top of lower annular groove is power set Uplink pressure-bearing surface, the area of uplink pressure-bearing surface is more than the area of downlink pressure-bearing surface；The lower part for controlling valve pocket is equipped with liquid-passing hole；Mandrel Endoporus include the entrance, contraction section, venturi, major diameter section, diffuser and the outlet section that are from top to bottom connected in turn, go out Mandrel plug is fixed on the inside of mouth section, the first through hole communicated with downlink pressure-bearing surface, the upper end of major diameter section are distributed on entrance The second through hole communicated with uplink pressure-bearing surface is distributed with, the lower part of diffuser is distributed the third through-hole communicated with liquid-passing hole, corresponding The control valve pocket inner sleeve of power set lower position is equipped with the switching sliding sleeve that can alternately open and close third through-hole；It is equipped in torque sleeve Can opposing torque set move up and down and holding for torque can be transferred with torque sleeve and hit unit, hold and hit the lower end of unit and be located under torque sleeve Side.

Here is the further optimization and/or improvements to above-mentioned utility model technical solution：

Above-mentioned hold hits unit and may include piston rod, torque locating part, piston valve base, spring and lower contact, is set in torque sleeve There is the piston rod that can be moved up and down along it, and the torque locating part that can transfer torque, piston are equipped between torque sleeve and piston rod The upper inner of bar is equipped with inner groove, is set with spring in inner groove successively from the bottom to top and can bear the impact of hydraulic impact unit Piston valve base, the top of inner groove be equipped with can limiting piston valve seat upward position uplink locating part, outside the lower part of piston rod Side is installed with the lower contact below torque sleeve.

Above-mentioned torque locating part can be torque pin, and at least one sliding slot hole is distributed in the upper outside of torque sleeve, corresponding Outer end is installed on the piston rod outer wall of each long hole site of sliding to be caught in sliding slot hole and along energy edge sliding slot hole The torque pin of lower movement.

The upper outside of above-mentioned piston rod can be equipped with the outer land being located above torque sleeve, be equipped between outer land and outer barrel Upper sealing ring, the outside of the outer land of sealing ring lower position is equipped with outer groove in correspondence, be equipped in outer groove can and outer barrel The upper guide ring that inner wall is adapted, the piston rod of sealing ring lower position is equipped with the small stepped hole of the big internal orifice of collar extension in correspondence, Tubular pressure cap is installed in the collar extension of stepped hole, filter is equipped between the inside of tubular pressure cap and the step surface of stepped hole Net；Lower seal, the torque sleeve inside of corresponding lower seal top position are equipped between the lower inside and piston rod of torque sleeve Equipped with annular groove is oriented to, the lower guide ring that can be adapted with piston rod outer diameter is installed in conducting wire annular groove.

Above-mentioned mandrel may include mandrel upper body and mandrel lower body, the lower inside of mandrel upper body in the top of mandrel lower body Side is fixedly installed togather, and the upper outside of mandrel upper body is together with the upper inner limit installation of top connection, power set set On the outside of mandrel upper body, the lower inside of mandrel lower body is fixed with mandrel plug；Entrance is located on mandrel in vivo, corresponding core The limited ring dais being located at below uplink pressure-bearing surface are equipped on the outside of the mandrel lower body of axis upper body lower position, venturi is located at mandrel lower body Upper inner, the second L-shaped through hole include horizontal segment and vertical section, the outer end of horizontal segment and the lower end of vertical section are connected to Together, horizontal segment is located at the overlapping region of limited ring dais and major diameter section upper end, and vertical section is located on the outside of mandrel upper body.

The lower inside of above-mentioned top connection can be equipped with connection land, and the upper outside of mandrel upper body is sleeved on connection land It is interior, it is correspondingly connected on the outside of the mandrel upper body of land top position and is equipped with mandrel land, connect on corresponding mandrel upper body top position Head inside is equipped with limit stop ring, and cushion cover is set in the top connection of position between corresponding limit stop ring and mandrel upper body；On mandrel The upper inner of body is set in the introduction segment above entrance, and introduction segment is in funnel-form.

General sealing ring can be equipped between above-mentioned mandrel land and top connection, is equipped between piston valve base and inner groove general Sealing ring, the lower inside of top connection and the upper outside of outer barrel, which are connected through a screw thread, to be fixedly installed togather and sets between the two There are trip bolt and general sealing ring, the lower inside of outer barrel and the upper inner of torque sleeve are connected through a screw thread and are fixedly mounted on Trip bolt and general sealing ring are equipped with together and between the two, the lower outside of piston rod and the upper inner of lower contact pass through Threaded connection be fixedly installed togather and between the two be equipped with trip bolt and general sealing ring, power set lower outside and control The upper inner of valve pocket, which is connected through a screw thread, is fixedly installed togather and is equipped between the two trip bolt and general sealing ring.

Above-mentioned impact hammer may include shuttle plug and punch, and the lower inside of shuttle plug is fixed with lower end and stretches out in shuttle Punch on the outside of sub- plug.

Labyrinth seal annular groove can be from top to bottom intervally distributed on the outside of the mandrel of above-mentioned corresponding first through hole lower position.

The lower inside of above-mentioned control valve pocket can be equipped with limited ring dais, and the limited ring dais when power set uplink extremely extreme position Upper surface position be not less than third through-hole.

The utility model reasonable and compact in structure by the ingenious utilization of Venturi effect, may be such that power set can be Circulation of fluid effect is lower to be completed to move back and forth, so that the utility model can be realized without above putting to put at card resistance Jarring operates, and is particularly suitable in the pipe string of continuous oil pipe operation, also good with card resistance eradicating efficacy, easy to operate, makes With the characteristics of convenient, work efficiency is high.

Description of the drawings

Attached drawing 1 is the main view half section schematic on the best embodiment of the utility model top.

Attached drawing 2 is the main view half section schematic of the best embodiment of the utility model lower part.

Coding in attached drawing is respectively：1 is top connection, and 2 be outer barrel, and 3 be torque sleeve, and 4 be power set, and 5 be to control valve pocket, 6 For switching sliding sleeve, 7 be downlink pressure-bearing surface, and 8 be uplink pressure-bearing surface, and 9 be liquid-passing hole, and 10 be mandrel plug, and 11 be first through hole, 12 It is third through-hole for the second through hole, 13,14 be mandrel upper body, and 15 be mandrel lower body, and 16 be connection land, and 17 be mandrel land, 18 be limit stop ring, and 19 be cushion cover, and 20 be piston rod, and 21 be general sealing ring, and 22 be piston valve base, and 23 be spring, under 24 are Connector, 25 be trip bolt, and 26 be torque pin, and 27 be sliding slot hole, and 28 be outer land, and 29 be upper sealing ring, and 30 be lower sealing Circle, 31 be upper guide ring, and 32 be tubular pressure cap, and 33 be strainer, and 34 be shuttle plug, and 35 be punch, and 36 be labyrinth seal annular groove, 37 be limited ring dais, and 38 be lower guide ring, and 29 be uplink locating part.

Specific embodiment

The utility model, can technical solution according to the present utility model and actual conditions from the limitation of following embodiments Determine specific embodiment.

In the utility model, for ease of description, the description of the relative position relation of each component is according to specification The Butut mode of attached drawing 1 is described, such as：The position relationship of forward and backward, upper and lower, left and right etc. is according to Figure of description Butut direction come it is definite.

The utility model is further described with reference to embodiment and attached drawing：

As shown in attached drawing 1,2, which includes top connection 1, outer barrel 2, torque sleeve 3, mandrel, hydraulic impact unit Hit unit with holding, the lower inside and the upper outside of outer barrel 2 of top connection 1 are fixedly installed togather, the lower inside of outer barrel 2 with The upper inner of torque sleeve 3 is fixedly installed togather, and the lower inside limit installation of top connection 1 has mandrel, is set on the outside of mandrel There is the hydraulic impact unit positioned at 3 top of torque sleeve；Hydraulic impact unit includes power set 4, control valve pocket 5, switching sliding sleeve 6 and punching Hammer body, the upper outside of mandrel are set with the power set 4 positioned at 1 lower section of top connection, lower outside and the control valve pocket of power set 4 5 upper inner is fixedly installed togather, and the upper inner of power set 4 is equipped with upper annular groove, and the lower inside of power set 4 is equipped with down Annular groove, the slot bottom of upper annular groove is the downlink pressure-bearing surface 7 of power set 4, and the groove top of lower annular groove is the uplink pressure-bearing surface 8 of power set 4, on The area of row pressure-bearing surface 8 is more than the area of downlink pressure-bearing surface 7；The lower part for controlling valve pocket 5 is equipped with liquid-passing hole 9；The endoporus of mandrel includes Entrance, contraction section, venturi, major diameter section, diffuser and the outlet section being from top to bottom connected in turn, outlet section inside are solid Surely there is mandrel plug 10, the first through hole 11 communicated with downlink pressure-bearing surface 7 is distributed on entrance, the upper end of major diameter section is distributed with The second through hole 12 communicated with uplink pressure-bearing surface 8, the lower part of diffuser are distributed the third through-hole 13 communicated with liquid-passing hole 9, corresponding Power covers 5 inner sleeve of control valve pocket of 4 lower positions equipped with the switching sliding sleeve 6 that can alternately open and close third through-hole 13；In torque sleeve 3 Be equipped with can opposing torque set 3 move up and down and holding for torque can be transferred with torque sleeve 3 and hit unit, hold and hit the lower end of unit and be located at 3 lower section of torque sleeve.

According to demand, entrance described herein, venturi and major diameter section are straight hole section, and major diameter section diameter is more than larynx Road diameter, venturi are in long and narrow, and contraction section and diffuser are reducer；First through hole 11, the second through hole 12, third through-hole 13 Quantity with liquid-passing hole 9 can be multiple, and can be in the shape that is uniformly distributed along the circumference；Liquid-passing hole 9 can be slotted hole, can so make cycling The circulation of fluid is more smooth, and the diameter of third through-hole 13 can be more than the diameter of the second through hole 12, further enhance the second through hole The vacuum effect formed at 12.During site operation, the specification consistent with job requirements may be selected, in the form of tubing string weight Apply the pressure of 680-910Kg to instrument, when reaching certain value by the circulation of fluid discharge capacity of instrument, instrument will generate one Determine the jarring force of frequency；Different displacements have different jarrings.Concretely：Under the utility model is connected in default pipe string Enter in well, coiled tubing is located at the top of the utility model at this time, and fishing tool can be connected under lower contact 24, when running into During card resistance, the downlink of lower contact 24 is limited, and circulation of fluid will be entered by pipe string in mandrel, and act on hydraulic impact unit, At this point, Venturi tube is equivalent to by the mandrel endoporus that entrance, contraction section, venturi, major diameter section and diffuser are formed, suitable for text Therefore effect in mound, when third through-hole 13 is in opening, will form negative pressure, downlink pressure-bearing surface 7 is held at the second through hole 12 The pressure received will be greater than the pressure of uplink pressure-bearing surface 8, and so as to can ensure that the 4 smooth downlink of energy of power set, power impacts after covering 4 downlinks Hammer body, which will hit to hold, hits unit, hits unit by applying downward jarring action power at card resistance due to holding at this time, while holds and hit Unit also suffers from the opposition at card resistance and rebounds；With power set 4 lower guild drive 6 downlink of switching sliding sleeve so as to Third through-hole 13 is closed, at this time since circulation of fluid can not discharge, Venturi effect will disappear, due to the face of uplink pressure-bearing surface 8 Product is more than downlink pressure-bearing surface 7, and power set 4 in uplink under differential pressure action, thus will can cover 4 up and down reciprocatingly action band by power Dynamic hold hits unit to application jarring operation at card resistance, so as to eliminate card resistance, convenient for being smoothed out for construction.The utility model structure It is reasonable and compact, by the ingenious utilization of Venturi effect, it is reciprocal to may be such that power set 4 can be completed under circulation of fluid effect Movement so that the utility model can operate the jarring at card resistance without above putting to put can be realized, has been particularly suitable for It is also good with card resistance eradicating efficacy in the pipe string of continuous oil pipe operation, easy to operate, easy to use, the high spy of work efficiency Point.

Above-mentioned hydraulic shock device can be made further optimization and/or improvements according to actual needs：

As shown in attached drawing 1,2, hold hit unit include piston rod 20, torque locating part, piston valve base 22, spring 23 and under connect First 24, torque sleeve 3 is interior to be equipped with the piston rod 20 that can be moved up and down along it, and is equipped with and can transfer between torque sleeve 3 and piston rod 20 The torque locating part of torque, the upper inner of piston rod 20 are equipped with inner groove, spring are set with successively from the bottom to top in inner groove 23 and the piston valve base 22 of hydraulic impact unit impact can be born, the top of inner groove is equipped with can line position on limiting piston valve seat 22 The uplink locating part 39 put, the lower outside of piston rod 20 are installed with the lower contact 24 positioned at 3 lower section of torque sleeve.It uses When, after hydraulic impact unit is coming downwards to impact hammer and acts on piston valve base 22, it will continue to press under piston valve base 22 It goes and compresses spring 23, the release action power of spring 23 will apply rapidly strong downlink impact forces to piston rod 20, should Impact forces will be passed in lower contact 24, and lower contact at this time 24 is limited due to downlink, it will be subject to pass out at card resistance Come opposition and fall after the uplink that rebounds, thus can be held by the drive that pumps of hydraulic impact unit and hit list Member is realized to the continuous jarring at card resistance, so as to eliminate card resistance, convenient for being smoothed out for construction.According to demand, uplink locating part 39 can be used existing known technology, such as clamp spring, inner shield ring.

As shown in attached drawing 1,2, torque locating part is torque pin 26, and at least one cunning is distributed in the upper outside of torque sleeve 3 Slot hole 27 is moved, outer end is installed on 20 outer wall of piston rod of 27 position of corresponding each sliding slot hole and is caught in sliding slot hole 27 Torque pin 26 that is interior and being moved up and down along sliding slot hole 27.It so can ensure that piston rod 20 can be moved up and down along torque sleeve 3, and Can torque be transferred to piston rod 20 by torque sleeve 3 simultaneously.

As shown in attached drawing 1,2, the upper outside of piston rod 20 is equipped with the outer land 28 for being located at 3 top of torque sleeve, outer land Upper sealing ring 29 is equipped between 28 and outer barrel 2, in correspondence the outside of the outer land 28 of 29 lower position of sealing ring equipped with outer groove, The upper guide ring 31 that can be adapted with 2 inner wall of outer barrel is installed, the piston rod of 29 lower position of sealing ring in correspondence in outer groove 20 are equipped with the small stepped hole of the big internal orifice of collar extension, and tubular pressure cap 32, tubular pressure cap 32 are installed in the collar extension of stepped hole Inside and stepped hole step surface between be equipped with strainer 33；It is equipped with down between the lower inside of torque sleeve 3 and piston rod 20 close Seal 30,3 inside of torque sleeve of corresponding 30 top position of lower seal, which is equipped with, is oriented to annular groove, and being equipped in conducting wire annular groove can be with work The lower guide ring 38 that 20 outer diameter of stopper rod is adapted.The setting of upper guide ring 31 can play centralizing function, prevent that lower contact 24 is eccentric, Extend its service life；The setting of strainer 33 can be filtered circulation of fluid, and preventing impurity from entering has upper sealing ring 29 under The annular space chamber that sealing ring 30 blocks, effectively avoids pulling for 2 inner wall of outer barrel, extends its service life.According to demand, upper sealing ring 29 and lower seal 30 existing known technology, such as T-shaped sealing ring can be used；Upper guide ring 31 and lower guide ring 38 can be adopted With existing known technology, such as elastic ring or there is open seam by pasting the wear-resisting ring formed or being formed by the semi-ring of two make-ups Split circle etc.；Outer groove can be located above or below stepped hole.

As shown in attached drawing 1,2, mandrel includes mandrel upper body 14 and mandrel lower body 15, the lower inside and core of mandrel upper body 14 The upper inner of axis lower body 15 is fixedly installed togather, the upper outside of mandrel upper body 14 and the upper inner /V of top connection 1 It is installed together, power set 4 is sleeved on 14 outside of mandrel upper body, and the lower inside of mandrel lower body 15 is fixed with mandrel plug 10； Entrance is located in mandrel upper body 14, and 15 outside of mandrel lower body of corresponding 14 lower position of mandrel upper body, which is equipped with, is located at uplink pressure-bearing The limited ring dais 37 of 8 lower section of face, venturi are located at the upper inner of mandrel lower body 15, and the second L-shaped through hole 12 includes horizontal segment And vertical section, the outer end of horizontal segment and the lower end of vertical section link together, horizontal segment is located in limited ring dais 37 and major diameter section The overlapping region at end, and vertical section is located at 14 outside of mandrel upper body.It so can ensure that the second through hole 12 connects with uplink pressure-bearing surface 8 It is logical, while limited ring dais 37 can also play position-limiting action to the downlink of power set 4, prevent its slippage.

As shown in attached drawing 1,2, the lower inside of top connection 1 is equipped with connection land 16, the upper outside set of mandrel upper body 14 In connection land 16,14 outside of mandrel upper body for being correspondingly connected with 16 top position of land is equipped with mandrel land 17, corresponding core 1 inside of top connection of 14 top position of axis upper body is equipped with limit stop ring 18, corresponding limit stop ring 18 and the meta position of mandrel upper body 14 Cushion cover 19 is set in the top connection 1 put；The upper inner of mandrel upper body 14 is set in the introduction segment above entrance, introduction segment In funnel-form.Thus can be realized by limit stop ring 18, connection land 16 and mandrel land 17 top connection 1 and mandrel upper body 14 it Between limit installation；The design of introduction segment can be convenient for circulation of fluid introducing entrance.According to demand, limit stop ring 18 can also adopt With other existing known technologies, such as clamp spring, circlip.

As shown in attached drawing 1,2, between mandrel land 17 and top connection 1 be equipped with general sealing ring 21, piston valve base 22 with it is interior General sealing ring 21 is equipped between annular groove, the lower inside of top connection 1 is connected through a screw thread fixed peace with the upper outside of outer barrel 2 It is fitted together and is equipped with trip bolt 25 and general sealing ring 21, the lower inside of outer barrel 2 and the top of torque sleeve 3 between the two Inside, which is connected through a screw thread, is fixedly installed togather and is equipped between the two trip bolt 25 and general sealing ring 21, piston rod 20 The upper inner of lower outside and lower contact 24 be connected through a screw thread and be fixedly installed togather and be equipped between the two fastening spiral shell Nail 25 and general sealing ring 21, the lower outside of power set 4 and the upper inner of control valve pocket 5 are connected through a screw thread and are fixedly mounted on It is equipped with together and between the two trip bolt 25 and general sealing ring 21.Can so it make equipped with general sealing ring 21 between the two With good leakproofness.According to demand, existing known technology, such as O-ring seal can be used in general sealing ring 21.

As shown in attached drawing 1,2, impact hammer includes shuttle plug 34 and punch 35, and the lower inside of shuttle plug 34 is fixed There is the punch 35 that lower end stretches out in 34 outside of shuttle plug.The production and processing of impact hammer can be so convenient for, improve the same of intensity When reduce production cost, also it can individually be replaced when punch 35 wears larger.According to demand, in the top of punch 35 Side can be embedded in the lower inside of shuttle plug 34.

It is close that labyrinth is from top to bottom intervally distributed with as shown in attached drawing 1,2, on the outside of the mandrel of 1 lower position of corresponding first through hole Seal ring slot 36.Can so be covered in power when 4 opposite mandrels move up and down makes to keep good leakproofness between the two.

As shown in attached drawing 1,2, the lower inside of control valve pocket 5 is equipped with limited ring dais 37, and when power set 4 goes upward to limit position The position of the upper surface of limited ring dais 37 is not less than third through-hole 13 when putting.Limited ring dais 37 can play the sliding of switching sliding sleeve 6 To position-limiting action, it is ensured that it can alternately open and close third through-hole 13.

More than technical characteristic constitutes the most preferred embodiment of the utility model, with stronger adaptability and optimal implementation Effect can increase and decrease non-essential technical characteristic, to meet the needs of different situations according to actual needs.

Claims (10)

1. a kind of hydraulic shock device, it is characterised in that hit including top connection, outer barrel, torque sleeve, mandrel, hydraulic impact unit and holding Unit, the lower inside of top connection and the upper outside of outer barrel are fixedly installed togather, the lower inside of outer barrel and torque sleeve Upper inner is fixedly installed togather, and the lower inside limit installation of top connection has mandrel, and the outside of mandrel, which is equipped with, is located at torque Cover the hydraulic impact unit of top；Hydraulic impact unit includes power set, control valve pocket, switching sliding sleeve and impact hammer, mandrel Upper outside is set with the power set below top connection, and the lower outside of power set and the upper inner of control valve pocket are fixed and pacified It is fitted together, the upper inner of power set is equipped with upper annular groove, and the lower inside of power set is equipped with lower annular groove, and the slot bottom of upper annular groove is The downlink pressure-bearing surface of power set, the groove top of lower annular groove are the uplink pressure-bearing surface of power set, and the area of uplink pressure-bearing surface is more than downlink The area of pressure-bearing surface；The lower part for controlling valve pocket is equipped with liquid-passing hole；What the endoporus of mandrel included from top to bottom being connected in turn enters Mouth section, contraction section, venturi, major diameter section, diffuser and outlet section, outlet section inside are fixed with mandrel plug, are distributed on entrance There is the first through hole communicated with downlink pressure-bearing surface, the second through hole communicated with uplink pressure-bearing surface is distributed in the upper end of major diameter section, expands The third through-hole that the lower part distribution of section is communicated with liquid-passing hole is dissipated, the control valve pocket inner sleeve of corresponding power set lower position is equipped with can Alternately open and close the switching sliding sleeve of third through-hole；Energy opposing torque set is installed to move up and down and can transfer with torque sleeve in torque sleeve Unit is hit in holding for torque, is held and is hit the lower end of unit and be located at below torque sleeve.

2. hydraulic shock device according to claim 1, it is characterised in that hold hit unit include piston rod, torque locating part, Piston valve base, spring and lower contact, torque sleeve is interior to be equipped with the piston rod that can be moved up and down along it, and between torque sleeve and piston rod Equipped with the torque locating part that can transfer torque, the upper inner of piston rod is equipped with inner groove, is covered successively from the bottom to top in inner groove Equipped with spring and the piston valve base that can bear the impact of hydraulic impact unit, the top of inner groove is equipped with can limiting piston valve seat uplink The uplink locating part of position, the lower outside of piston rod are installed with the lower contact below torque sleeve.

3. hydraulic shock device according to claim 2, it is characterised in that torque locating part be torque pin, the top of torque sleeve At least one sliding slot hole is distributed in outside, and outer end is installed on the piston rod outer wall of corresponding each long hole site of sliding It is caught in the torque pin that can be moved up and down in sliding slot hole and along sliding slot hole.

4. hydraulic shock device according to claim 2, it is characterised in that the upper outside of piston rod, which is equipped with, is located at torque sleeve The outer land of top is equipped with upper sealing ring between outer land and outer barrel, the outside of the outer land of sealing ring lower position in correspondence Equipped with outer groove, the upper guide ring that can be adapted with outer tube inner wall is installed in outer groove, sealing ring lower position in correspondence Piston rod is equipped with the small stepped hole of the big internal orifice of collar extension, and tubular pressure cap, tubular pressure cap are installed in the collar extension of stepped hole Inside and stepped hole step surface between be equipped with strainer；Lower seal is equipped between the lower inside and piston rod of torque sleeve, It is equipped on the inside of the torque sleeve of corresponding lower seal top position and is oriented to annular groove, being equipped in conducting wire annular groove can be with piston rod outer diameter phase The lower guide ring of adaptation.

5. hydraulic shock device according to claim 1, it is characterised in that mandrel includes mandrel upper body and mandrel lower body, mandrel The lower inside of upper body and the upper inner of mandrel lower body are fixedly installed togather, the upper outside of mandrel upper body and top connection Upper inner is mounted together, and power set is sleeved on the outside of mandrel upper body, and the lower inside of mandrel lower body is fixed with mandrel Plug；Entrance is located on mandrel in vivo, is equipped on the outside of the mandrel lower body of corresponding mandrel upper body lower position and is located at uplink pressure-bearing Limited ring dais below face, venturi are located at the upper inner of mandrel lower body, and the second L-shaped through hole is including horizontal segment and vertically Section, the outer end of horizontal segment and the lower end of vertical section link together, and it is overlapping with major diameter section upper end that horizontal segment is located at limited ring dais Region, and vertical section is located on the outside of mandrel upper body.

6. according to the hydraulic shock device described in Claims 2 or 3 or 4, it is characterised in that mandrel is included under mandrel upper body and mandrel Body, the lower inside and the upper inner of mandrel lower body of mandrel upper body are fixedly installed togather, the upper outside of mandrel upper body with The upper inner of top connection is mounted together, and power set is sleeved on the outside of mandrel upper body, and the lower inside of mandrel lower body is consolidated Surely there is mandrel plug；Entrance is located on mandrel in vivo, is equipped with and is located on the outside of the mandrel lower body of corresponding mandrel upper body lower position Limited ring dais below uplink pressure-bearing surface, venturi are located at the upper inner of mandrel lower body, and the second L-shaped through hole includes horizontal segment And vertical section, the outer end of horizontal segment and the lower end of vertical section link together, horizontal segment is located at limited ring dais and major diameter section upper end Overlapping region, and vertical section is located on the outside of mandrel upper body.

7. hydraulic shock device according to claim 6, it is characterised in that the lower inside of top connection is equipped with connection land, core The upper outside of axis upper body is sleeved in connection land, is correspondingly connected on the outside of the mandrel upper body of land top position and is equipped with mandrel ring Platform, the inside top connection of corresponding mandrel upper body top position are equipped with limit stop ring, corresponding limit stop ring and the meta position of mandrel upper body Cushion cover is set in the top connection put；The upper inner of mandrel upper body is set in the introduction segment above entrance, and introduction segment is in leakage It is bucket-shaped.

8. hydraulic shock device according to claim 7, it is characterised in that be equipped between mandrel land and top connection general close Seal is equipped with general sealing ring between piston valve base and inner groove, the lower inside of top connection and the upper outside of outer barrel pass through Threaded connection is fixedly installed togather and between the two equipped with trip bolt and general sealing ring, the lower inside and torque of outer barrel The upper inner of set, which is connected through a screw thread, is fixedly installed togather and is equipped between the two trip bolt and general sealing ring, piston The lower outside of bar and the upper inner of lower contact, which are connected through a screw thread, is fixedly installed togather and is equipped between the two fastening spiral shell Nail and general sealing ring, power set lower outside with control valve pocket upper inner be connected through a screw thread be fixedly installed togather and Trip bolt and general sealing ring are equipped between the two.

9. according to the hydraulic shock device described in claim 1 or 2 or 3 or 4 or 5 or 7 or 8, it is characterised in that impact hammer includes Shuttle plug and punch, the lower inside of shuttle plug are fixed with lower end and stretch out in punch on the outside of shuttle plug；It is or/and right It answers and is from top to bottom intervally distributed with labyrinth seal annular groove on the outside of the mandrel of first through hole lower position；Or/and control the lower part of valve pocket Inside is equipped with limited ring dais, and the position of the upper surface of limited ring dais is not less than threeway when power set uplink extremely extreme position Hole.

10. hydraulic shock device according to claim 5, it is characterised in that impact hammer includes shuttle plug and punch, shuttle The lower inside of sub- plug is fixed with lower end and stretches out in punch on the outside of shuttle plug；Or/and corresponding first through hole lower position Mandrel on the outside of be from top to bottom intervally distributed with labyrinth seal annular groove；Or/and control valve pocket lower inside be equipped with limited ring dais, And the position of the upper surface of limited ring dais is not less than third through-hole when power set uplink extremely extreme position.