CN208347673U - It is a kind of back and forth to raise speed tool from the broken rock of impact structure with hammer stem - Google Patents

It is a kind of back and forth to raise speed tool from the broken rock of impact structure with hammer stem Download PDF

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CN208347673U
CN208347673U CN201820813518.0U CN201820813518U CN208347673U CN 208347673 U CN208347673 U CN 208347673U CN 201820813518 U CN201820813518 U CN 201820813518U CN 208347673 U CN208347673 U CN 208347673U
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hammer stem
tup
bit
hammer
impact
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祝效华
郭光亮
童华
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Southwest Petroleum University
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Southwest Petroleum University
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Abstract

The utility model discloses a kind of with hammer stem back and forth from the broken rock speed-raising tool of impact structure, including connector, bit body and valve type impactor, the connector connect to form inner chamber body with bit body, the inner chamber body includes main cavity, the basal diameter that the cylinder on main chamber body top enters liquid channel and lower part be greater than it is described enter liquid channel coaxial cylindrical plunger shaft, it is described to enter the valve seat of variable cross-section is arranged between liquid channel and the plunger shaft;Hammer stem slideway is arranged in the bit body lower part;Valve type impactor is set in main chamber body, the valve type impactor includes valve seat, piston block stamp and spring, piston block stamp moves reciprocatingly under the action of spring and hydraulic power, cooperate with drill bit, realizes that local assault auxiliary scrapes the rock breaking mechanism cut, achieve the purpose that broken rock raises speed, and structure is simple, both it can design simultaneously multiple back and forth from impact structure, more hammer stems can also be designed simultaneously, percussive assist is further increased and scrape the efficiency of breaking rock cut.

Description

It is a kind of back and forth to raise speed tool from the broken rock of impact structure with hammer stem
Technical field
The utility model belongs to oil-gas drilling field, and in particular to it is a kind of with hammer stem back and forth from impact structure Broken rock speed-raising tool.
Background technique
Drill bit is in drilling engineering to fractured rock, the rock crushing tool of formation pit shaft.It is surveyed with the oil gas of petroleum industry Exploitation is visited, the increasingly failure of Shallow Oil-Gas resource, the drilling well of petroleum industry institute is more and more deep, and stratum age is more and more remote, and rock is cured Carry out important topic one of of the problem of improving deep-well drilling speed more firmly as drilling well circle research.
The conventional bit that drilling engineering uses now mainly has rock bit, PDC drill bit and percussion bit.In recent years, with Oil/gas drilling engineering marched to deeper formation, hard formation drilling problem become increasingly conspicuous, traditional rock bit and PDC drill bit It has not been well positioned to meet the needs of drilling engineering, when boring chance hard formation, the accidental damage of drill bit, drilling efficiency has easily occurred Low, bit life is short, and drilling period is long, at high cost, and ing technique is to solve the most effective side of hard-rock boring problem One of method.
Ing technique is the technology method that petroleum industry showed unique characteristics, can significantly improve drilling speed.It passes The percussion drilling of system is directly by the impact force action of down-the-hole air hammer generation on drill bit, by the instant impact of bit teeth Realization is crushed bottom rock, and such bit teeth is easily damaged under the action of periodic shock power, seriously affects drill bit Service life, and need to rely on individual down-the-hole air hammer and pulsatile impact load be provided.
In the prior art, with the reciprocating drill bit from impact structure or using multisection type block stamp or using complicated Driving structure, structure is relative complex, and since the inner space of drill bit is limited, lead to that multiple formed punches cannot be designed simultaneously, from And efficiency of breaking rock cannot be preferably improved, and cost is also high.
Utility model content
In view of the deficiencies of the prior art, the utility model provides a kind of back and forth mentions from the broken rock of impact structure with hammer stem Fast tool, realizing hammer stem, back and forth the structure of impact is relatively easy certainly, solves the problems, such as that multiple formed punches cannot be designed simultaneously, from And preferably speed-raising efficiency can be obtained under the premise of low cost, it solves to creep into high-intensitive, high abrasive stratum drilling efficiency It is low, bit life is short, the problems such as at high cost.
In order to achieve the above object, the technical scheme adopted by the utility model is providing a kind of reciprocal certainly with hammer stem The broken rock speed-raising tool of impact structure, including connector and bit body, stationary cutting structure is arranged in the bit body lower end, described solid Determine that fixed cutting tooth is arranged on cutting structure, the inner cavity of the bit body is by the hydrophthalmia inside the stationary cutting structure and outside Boundary's connection;The connector connect to form inner chamber body with bit body, and the inner chamber body includes main cavity, the circle on main chamber body top The basal diameter that cylindricality enters liquid channel and lower part be greater than it is described enter liquid channel coaxial cylindrical plunger shaft, it is described enter liquid channel with The valve seat of variable cross-section is set between the plunger shaft;Hammer stem slideway is arranged in the bit body lower part;Valve is set in main chamber body Formula impactor, the valve type impactor include piston block stamp and spring, and the piston block stamp includes tup and hammer stem;The tup For the tension force of spring overhead compressed by lower end on the valve seat, the hammer stem passes through hammer stem slideway from the bottom up, and with institute State the connection of tup lower end;The top of the tup is rotary table;When the hammer stem is located at minimum point, the formed punch of the hammer stem exceeds The stationary cutting structure guarantees that tup can impact rock during drilling.
When not applying hydraulical impact power, since the spring is still within compressive state, elasticity tension is provided, it will be described The rotary table overhead of tup will enter and seal off between liquid channel and plunger shaft on the valve seat, convenient for applying hydraulical impact When power, local high pressure is formed in liquid channel entering, to can produce biggish impact force, piston block stamp is pushed to move downward.
In addition, the bit body is conventional drill bit structure, when in use, end connector is bored by screw thread and top thereon Tool connection.
Further, 1 valve type impactor is arranged in main chamber body, the valve type impactor includes 1 piston punching Hammer and 1 spring, the piston block stamp include 1 tup and 1 hammer stem;For the spring that the tup is compressed by lower end Power overhead on the valve seat, the hammer stem from the bottom up successively along axle center pass through hammer stem slideway and spring, and with the tup Lower end connection, and the tup and the hammer stem are coaxial.1 tup and 1 hammer stem is arranged in this programme, can substantially meet impact damage Hurt the needs of rock, and structure is simple.
Further, 1 valve type impactor is arranged in main chamber body, the valve type impactor includes 1 piston punching Hammer and 1 spring, the piston block stamp include 1 tup and 2 hammer stems;For the spring that the tup is compressed by lower end For power overhead on the valve seat, 2 hammer stems are successively each passed through 2 hammer stem slideways from the bottom up, and connect with the tup lower end It connects.1 tup and 2 hammer stems are arranged in this programme, just because of the simplification of structure, so that in bit body in limited space 2 hammer stems are devised simultaneously, percussive assist is further increased and scrapes the efficiency of breaking rock cut.
Further, the piston block stamp can also include 3 hammer stems, 3 hammer stems are successively each passed through 3 from the bottom up A hammer stem slideway, and connect with the tup lower end.1 tup and 3 hammer stems are arranged in this programme, just because of the simple of structure Property, so that devising 3 hammer stems simultaneously in limited space in bit body, further increases percussive assist and scrape the broken rock effect cut Rate.
Further, the inner chamber body further includes the pair for the multiple center symmetric settings being connected to main chamber body bottom The structure of cavity, the pair cavity is consistent with main chamber body, and the secondary cavity is circumferential uniform point along the bit body axle center Cloth.The pair cavity is that upper end deviation axis is obliquely installed, and can be used for installing multiple valve type impactors, generates higher speed-raising Efficiency.
Further, 1 valve type impactor is arranged in the pair cavity, the valve type impactor includes 1 piston punching Hammer and 1 spring, the piston block stamp include 1 tup and 1 hammer stem;For the spring that the tup is compressed by lower end For power overhead on the auxiliary-seat of the secondary cavity, the hammer stem slideway is located at the secondary cavity lower part of the bit body, the hammer stem Hammer stem slideway and spring are sequentially passed through from the bottom up, and are connect with the tup lower end.
Further, the connector and bit body connection type are welding, guarantee the overall stability of drill bit, the hammer Head is to be threadedly coupled with the connection type of hammer stem, and threaded connection is easily installed.
Further, the hammer stem slideway is circumferentially equal along the bit body axial line when hammer stem slideway has 2 or 3 Even distribution, and be in staggered distribution with the hydrophthalmia inside the bit body, make the uniform force of hammer stem, keeps drill bit when applying impact force Balance.
Further, limiting tooth is additionally provided on the bit body, the maximum wedging of the fixed cutting tooth of limitation bit body Amount, it is ensured that scrape the smooth safety progress for cutting through rock.
The frequency and ballistic work of the ram impacts rock can pass through the parametric synthesis control of spring and valve seat and tup System.
The beneficial effects of the utility model are:
1, compared with prior art, valve type impactor structure is simple, can design simultaneously in limited drill bit internal space Multiple formed punches solve to creep into high-intensitive, high abrasive stratum to obtain preferably speed-raising efficiency under the premise of low cost Drilling efficiency is low, bit life is short, the problems such as at high cost.
2, valve type impactor is cleverly placed in drill bit, has not both been needed additional down-the-hole air hammer and is provided impact energy for formed punch Amount, but will not because of bit size change and influence drill assembly.
3, realize that hammer stem is back and forth relatively easy from the structure of impact, few easy workout part, even if installation is multiple, cost is not also high, And the probability of failure is small, and the broken rock performance of fixed cutter drill bits itself will not be influenced surprisingly failure.
4, the periodic shock power that the valve type impactor of drill bit generates acts directly on rock, does not need to pass through bit body Fixed cutting tooth transmitting, had not only improved the utilization rate of energy, but also had prevented the fixed cutting tooth of bit body in periodic shock masterpiece Failure under ensure that the service life of drill bit.
5, formed punch scrapes that cut through rock be two independent processes to rock to the fixed cutting tooth of the impact of rock and bit body, Formed punch reciprocating impact rock makes rock generate pit and crackle, and the crackle of generation is with being conducive to the fixed cutting tooth wedging of bit body Layer improves efficiency of breaking rock.
6, the maximum wedging amount of the fixed cutting tooth of limiting tooth limitation bit body, it is ensured that scrape the smooth safety progress for cutting through rock.
7, hammer stem and tup are integrated, and hydraulical impact power is applied directly on rock, and energy loss is few, and target efficiency is more It is high.
Detailed description of the invention
The utility model is described in further detail with reference to the accompanying drawing.
Fig. 1 is structural schematic diagram when hammer stem quantity is 1 in the utility model;
Fig. 2 be in the utility model hammer stem quantity be 1 when from cutting structure end to tip side in terms of when structural schematic diagram;
Fig. 3 is schematic diagram when hammer stem moves down when hammer stem quantity is 1 in the utility model;
The structure that Fig. 4 is hammer stem quantity when the hammer stem slideway cross section of the utility model bit body is regular polygon when being 1 Schematic diagram;
Fig. 5 is structural schematic diagram when hammer stem quantity is 2 in the utility model;
Fig. 6 is a kind of structural schematic diagram of valve type impactor of the utility model;
Fig. 7 is the position of valve type impactor and bit body built in any instrumentality when the utility model has multiple valve type impactors Set relation schematic diagram;
Fig. 8 be in the utility model hammer stem quantity be 2 when from cutting structure end to tip side in terms of when structural schematic diagram;
Fig. 9 be in the utility model hammer stem quantity be 3 when from cutting structure end to tip side in terms of when structural schematic diagram;
Figure 10 is that the valve seat of the utility model axially turns round structural schematic diagram when bus is circular arc;
Figure 11 is that the valve seat of the utility model axially turns round structural schematic diagram when bus is straight line-circular arc.
In figure: 1. connectors, 11. valve seats, 111. auxiliary-seats, 131. main cavities, 132. secondary cavitys, 2. springs, 3. bit bodys, 31. stationary cutting structure, 32. fixed cutting tooths, 33. hydrophthalmias, 34. limiting tooths, 35. hammer stem slideways, 4. piston block stamps, 41. hammers Head, 42. hammer stems, 43. formed punches.
Specific embodiment
It is practical to this below with reference to embodiment in order to keep the purpose of this utility model, technical solution and advantage clearer It is novel to be further elaborated, but be not the limitation to scope of protection of the utility model.
Embodiment one:
In the present embodiment, a kind of back and forth to raise speed work from the broken rock of impact structure with hammer stem as shown in Fig. 1~3 and 6 Have, including connector 1 and bit body 3,3 lower end of the bit body setting stationary cutting structure 31, on the stationary cutting structure 31 The inner cavity of the fixed cutting tooth 32 of setting, the bit body 3 is connected by the hydrophthalmia 33 inside the stationary cutting structure 31 with extraneous It is logical;The connector 1 connect to form inner chamber body with bit body 3, and the inner chamber body includes main cavity 131,131 top of main chamber body Cylinder enter liquid channel 1311 and lower part basal diameter be greater than it is described enter liquid channel 1311 coaxial cylindrical plunger shaft 1312, it is described to enter the valve seat 11 of variable cross-section is arranged between liquid channel 1311 and the plunger shaft 1312;3 lower part of bit body is set Set hammer stem slideway 35;Valve type impactor is set in main chamber body 131, and the valve type impactor includes piston block stamp 4 and spring 2, the piston block stamp 4 includes tup 41 and hammer stem 42;The tension overhead for the spring 2 that the tup 41 is compressed by lower end is in institute It states on valve seat 11, the hammer stem 42 passes through hammer stem slideway 35 from the bottom up, and connect with 41 lower end of tup;The tup 41 Top be rotary table;When the hammer stem 42 is located at minimum point, the formed punch 43 of the hammer stem 42 exceeds the stationary cutting structure 31, guarantee that formed punch 43 can impact rock during drilling.
When not applying hydraulical impact power, since the spring 2 is still within compressive state, elasticity tension is provided, by institute The rotary table overhead of tup 41 is stated on the valve seat 11, will enter and sealed off between liquid channel 1311 and plunger shaft 1312, is convenient for When applying hydraulical impact power, local high pressure is formed in liquid channel 1311 entering, to can produce biggish impact force, is pushed Piston block stamp 4 moves downward.
In addition, the bit body 3 is conventional drill bit structure, when in use, end connector 1 passes through screw thread and top thereon Drilling tool connection.
Wherein, 1 valve type impactor is set in main chamber body 131, and the valve type impactor includes 1 piston block stamp 4 With 1 spring 2, the piston block stamp 4 includes 1 tup 41 and 1 piece hammer stem 42;The bullet that the tup 41 is compressed by lower end For the tension overhead of spring 2 on the valve seat 11, the hammer stem 42 successively passes through hammer stem slideway 35 and spring along axle center from the bottom up 2, and connect with 41 lower end of tup, and the tup 41 and the hammer stem 42 are coaxial.1 tup 41 and 1 is arranged in this programme Root hammer stem 42 can substantially meet the needs of impact injury rock, and structure is simple.
When the cross section of the hammer stem 42 of the hammer stem slideway 35 and piston block stamp 4 of the bit body 3 is circle, piston at this time Block stamp 4 is not rotated together with drill bit.
The connector 1 is welding with 3 connection type of bit body, guarantees the overall stability of drill bit, the tup 41 and hammer The connection type of bar 42 is to be threadedly coupled, and threaded connection is easily installed.
The parameter of the spring 2 are as follows: material diameter: 6mm, central diameter 28mm, building ring n1=18 circle, bracing ring n2=2 circle, Number of total coils n=20 circle, both ends circle is simultaneously tight and polishes.
As a kind of prioritization scheme, limiting tooth 34, the fixed cutting tooth of limitation bit body 3 are additionally provided on the bit body 3 32 maximum wedging amount, it is ensured that scrape the smooth safety progress for cutting through rock.
Embodiment two:
In the present embodiment, a kind of back and forth to raise speed work from the broken rock of impact structure with hammer stem as shown in Fig. 1~4 and 6 Tool, alternatively, 35 cross section of hammer stem slideway are regular polygon, are moved in the hammer stem slideway 35 accordingly Hammer stem 42 be corresponding regular polygon, piston block stamp 4 is rotated together with drill bit at this time, and impact rock effect is more preferable.Remaining skill Art feature is the same as example 1.
Embodiment three:
It is in the present embodiment, a kind of back and forth to raise speed tool from the broken rock of impact structure with hammer stem as shown in Fig. 5,6,8, 1 valve type impactor is set in main chamber body 131, and the valve type impactor includes 1 piston block stamp 4 and 1 piece spring 2, institute Stating piston block stamp 4 includes 1 tup 41 and 2 piece hammer stem 42;The tension overhead for the spring 2 that the tup 41 is compressed by lower end exists On the valve seat 11,2 hammer stems 42 are successively each passed through 2 hammer stem slideways 35 from the bottom up, and connect with 41 lower end of tup It connects.1 tup 41 and 2 piece hammer stem 42 is arranged in this programme, just because of the simplification of structure, so that limited in bit body 3 In space simultaneously devise 2 hammer stems, the hammer stem slideway 35 is circumferentially uniformly distributed along 3 axial line of bit body, and with institute It states the hydrophthalmia 33 inside bit body 3 to be in staggered distribution, makes the uniform force of hammer stem 42, the balance of drill bit is kept when applying impact force. Remaining technical characteristic is the same as example 1.It further increases percussive assist and scrapes the efficiency of breaking rock cut.
Example IV:
In the present embodiment, as shown in Figure 6 and 9, a kind of back and forth to raise speed tool from the broken rock of impact structure with hammer stem, institute State piston block stamp 4 and include that 3 hammer stems, 42,3 hammer stems 42 are successively each passed through 3 hammer stem slideways 35 from the bottom up, and with it is described The connection of 41 lower end of tup.1 tup 41 and 3 piece hammer stem 42 is arranged in this programme, just because of the simplification of structure, so that in drill bit 3 hammer stems 42 are devised simultaneously in internal limited space;The hammer stem slideway 35 is circumferentially uniform along 3 axial line of bit body Distribution, and be in staggered distribution with the hydrophthalmia 33 inside the bit body 3, make the uniform force of hammer stem 42, is kept when applying impact force The balance of drill bit.Remaining technical characteristic is the same as example 1.It further increases percussive assist and scrapes the efficiency of breaking rock cut.
Embodiment five:
In the present embodiment, as shown in Figures 6 and 7, a kind of back and forth to raise speed tool from the broken rock of impact structure with hammer stem, institute State the secondary cavity 132 that inner chamber body 13 further includes the multiple center symmetric settings being connected to 131 bottom of main chamber body, the pair chamber The structure and main chamber body 131 of body 132 are consistent, and the secondary cavity 132 is circumferentially uniformly distributed along 3 axle center of bit body. The pair cavity 132 is that upper end deviation axis is obliquely installed, and can be used for installing multiple valve type impactors, generates higher speed-raising Efficiency.
1 valve type impactor is set in the pair cavity 132, and the valve type impactor includes 1 piston block stamp 4 and 1 piece Spring 2, the piston block stamp 4 include 1 tup 41 and 1 piece hammer stem 42;The spring 2 that the tup 41 is compressed by lower end For tension overhead on the auxiliary-seat 111 of the secondary cavity 132, the hammer stem slideway 35 is located at the secondary cavity of the bit body 3 132 lower parts, the hammer stem 42 sequentially passes through hammer stem slideway 35 and spring 2 from the bottom up, and connect with 41 lower end of tup.Its Remaining technical characteristic is the same as example 1.
Embodiment six:
In the present embodiment, as shown in figure 11, a kind of drill bit for the broken rock acceleration structure back and forth impacted certainly with hammer stem, institute Structure when the axial revolution bus of valve seat 11 is straight line-circular arc is stated, remaining technical characteristic is the same as example 1.
The working principle of the utility model are as follows:
When normal work, piston block stamp 4 moves back and forth under the force action of 2 elastic force of fluid hydraulic power and spring.Drilling well When liquid flows into connector 1 and flow through valve seat 11 through drilling rod, piston block stamp 4 accelerates downwards under the action of hydraulic power, piston punching The speed of hammer 4 constantly increases, and with the increase that piston block stamp 4 is displaced, hydraulic power constantly reduces, and the reaction elastic force of spring 2 increases Greatly, when hydraulic power and elastic force it is equal in magnitude when, the speed of piston block stamp 4 reaches maximum value, and hereafter, hydraulic power continues to reduce, Elastic force continues to increase, and piston block stamp 4 continues to do retarded motion downwards;When the speed of piston block stamp 4 becomes zero, spring 2 it is anti- Effect elastic force reaches maximum value when work, and piston block stamp 4 reversely accelerates, with the reduction that piston block stamp 4 is displaced, spring 2 reaction elastic force constantly reduces, and hydraulic power increases, when elastic force and hydraulic power it is equal in magnitude when, piston block stamp 4 reaches maximum Inverted speed, hereafter, elastic force continue to reduce, and hydraulic power continues to increase, and piston block stamp 4, which continues up, does retarded motion, work as piston When the speed of block stamp 4 is kept to zero, hydraulic power reaches maximum value when work, and piston block stamp 4 will be under the action of hydraulic power downwards It accelerates, aforementioned process is repeated, so that the entire reciprocation period of piston block stamp 4 goes on.In whole process, The direction of hydraulic power is downward always, and the direction of the elastic force of spring 2 is contrary with hydraulic power always, upwards.Formed punch 43 will be Bottom rock is impacted when the speed maximum of piston block stamp 4, the energy of 43 impact rock of formed punch is maximum at this time, and impact effect is best.
Formed punch 43 impacts bottom rock, eats rock generation pit and crackle, the fixation cutting tooth 32 for being conducive to bit body 3 Enter stratum and scrape to cut through rock, while limiting tooth 34 can prevent fixed cutting tooth 32 from excessively eating in the case where bottom rock has crackle Enter rock, it is ensured that scrape the smooth safety progress for cutting through rock, drill bit, the week of formed punch are effectively protected while improving efficiency of breaking rock Phase property impact, it is ensured that entire efficient rock-breaking process is lasting to go on.
As shown in Figure 1, hammer stem quantity is the cross section of 1 and the hammer stem 42 of the hammer stem slideway 35 and piston block stamp 4 of bit body 3 When being circle, piston block stamp 4 is not rotated together with drill bit at this time;As shown in figure 4, hammer stem quantity is the hammer stem of 1 and bit body 3 The cross section of the hammer stem 42 of slideway 35 and piston block stamp 4 is regular polygon, and piston block stamp 4 rotates together impact with drill bit at this time Effect is more preferable.
The basic principles and main features and advantage of the utility model have been shown and described above.The technical staff of the industry It should be appreciated that the present utility model is not limited to the above embodiments, the above embodiments and description only describe this The principle of utility model, on the premise of not departing from the spirit and scope of the utility model, the utility model also has various change And improvement, these various changes and improvements fall within the scope of the claimed invention.The utility model requires protection scope It is defined by the appending claims and its equivalent thereof.

Claims (9)

1. a kind of back and forth raise speed tool, including connector (1) and bit body (3) from the broken rock of impact structure with hammer stem, the brill Stationary cutting structure (31) are arranged in head body (3) lower end, are arranged on the stationary cutting structure (31) fixed cutting tooth (32), described The inner cavity of bit body (3) is in communication with the outside by the stationary cutting structure (31) internal hydrophthalmia (33);It is characterized by: institute It states connector (1) to connect to form inner chamber body with bit body (3), the inner chamber body includes main cavity (131), main chamber body (131) The basal diameter that the cylinder on top enters liquid channel (1311) and lower part be greater than it is described enter liquid channel (1311) coaxial cylindrical Plunger shaft (1312), it is described to enter the valve seat (11) of variable cross-section is arranged between liquid channel (1311) and the plunger shaft (1312);Institute State bit body (3) lower part setting hammer stem slideway (35);
Valve type impactor is set in main chamber body (131), and the valve type impactor includes piston block stamp (4) and spring (2), institute Stating piston block stamp (4) includes tup (41) and hammer stem (42);The tension top for the spring (2) that the tup (41) is compressed by lower end Set on the valve seat (11), the hammer stem (42) from the bottom up pass through hammer stem slideway (35), and with the tup (41) lower end Connection;The top of the tup (41) is rotary table;
When the hammer stem (42) is located at minimum point, the formed punch (43) of the hammer stem (42) exceeds the stationary cutting structure (31)。
It a kind of back and forth raises speed tool from the broken rock of impact structure with hammer stem 2. according to claim 1, it is characterised in that: 1 valve type impactor is set in main chamber body (131), and the valve type impactor includes 1 piston block stamp (4) and 1 spring (2), the piston block stamp (4) includes 1 tup (41) and 1 hammer stem (42);The bullet that the tup (41) is compressed by lower end For the tension overhead of spring (2) on the valve seat (11), the hammer stem (42) successively passes through hammer stem slideway along axle center from the bottom up (35) and spring (2) it connect, and with the tup (41) lower end, and the tup (41) and the hammer stem (42) are coaxial.
It a kind of back and forth raises speed tool from the broken rock of impact structure with hammer stem 3. according to claim 1, it is characterised in that: 1 valve type impactor is set in main chamber body (131), and the valve type impactor includes 1 piston block stamp (4) and 1 spring (2), the piston block stamp (4) includes 1 tup (41) and 2 hammer stems (42);The bullet that the tup (41) is compressed by lower end For the tension overhead of spring (2) on the valve seat (11), 2 hammer stems (42) are successively each passed through 2 hammer stem slideways from the bottom up (35), it and with the tup (41) lower end connect.
It a kind of back and forth raises speed tool from the broken rock of impact structure with hammer stem 4. according to claim 3, it is characterised in that: The piston block stamp (4) can also include 3 hammer stems (42), and it is sliding that 3 hammer stems (42) are successively each passed through 3 hammer stems from the bottom up Road (35), and connect with the tup (41) lower end.
It a kind of back and forth raises speed tool from the broken rock of impact structure with hammer stem 5. according to claim 1, it is characterised in that: The inner chamber body (13) further includes the secondary cavity (132) for the multiple center symmetric settings being connected to main chamber body (131) bottom, Unanimously, and the secondary cavity (132) is along the bit body (3) for the structure of the pair cavity (132) and main chamber body (131) Axle center is circumferentially uniformly distributed.
It a kind of back and forth raises speed tool from the broken rock of impact structure with hammer stem 6. according to claim 5, it is characterised in that: 1 valve type impactor is set in the pair cavity (132), and the valve type impactor includes 1 piston block stamp (4) and 1 spring (2), the piston block stamp (4) includes 1 tup (41) and 1 hammer stem (42);The bullet that the tup (41) is compressed by lower end For the tension overhead of spring (2) on the auxiliary-seat (111) of the secondary cavity (132), the hammer stem slideway (35) is located at the drill bit Secondary cavity (132) lower part of body (3), the hammer stem (42) sequentially pass through hammer stem slideway (35) and spring (2) from the bottom up, and with Tup (41) the lower end connection.
7. a kind of described in any one according to claim 1~6 back and forth raise speed work from the broken rock of impact structure with hammer stem Tool, it is characterised in that: the connector (1) and bit body (3) connection type is weld, the company of the tup (41) and hammer stem (42) Mode is connect to be threadedly coupled.
8. it is according to claim 3 or 4 it is a kind of back and forth raise speed tool from the broken rock of impact structure with hammer stem, feature exists In: the hammer stem slideway (35) is circumferentially uniformly distributed along the bit body (3) axial line, and internal with the bit body (3) Hydrophthalmia (33) is in staggered distribution.
It a kind of back and forth raises speed tool from the broken rock of impact structure with hammer stem 9. according to claim 1, it is characterised in that: Limiting tooth (34) are additionally provided on the bit body (3).
CN201820813518.0U 2018-05-29 2018-05-29 It is a kind of back and forth to raise speed tool from the broken rock of impact structure with hammer stem Active CN208347673U (en)

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