CN216866558U

CN216866558U - Power device of drill rod

Info

Publication number: CN216866558U
Application number: CN202220574764.1U
Authority: CN
Inventors: 李正西; 郑小明; 潘祥
Original assignee: Fujian Xiaxing Heavy Machinery Co ltd
Current assignee: Fujian Xiaxing Heavy Machinery Co ltd
Priority date: 2022-03-16
Filing date: 2022-03-16
Publication date: 2022-07-01
Anticipated expiration: 2032-03-16

Abstract

The utility model discloses a power device of a drill rod, belonging to the technical field of pile foundation engineering, comprising a base and a rotating shaft, wherein the rotating shaft is arranged in the base, the rotating shaft comprises a limiting end and a movable end, the limiting end and one end of the movable end in the base are connected through a connecting piece and form a cavity, a supporting plate is arranged in the cavity, a plurality of elastic pieces are arranged at the upper end and the lower end of the supporting plate, a hydraulic cylinder is arranged on the supporting plate, a connecting pipe is arranged at the movable end, one end of the connecting pipe penetrates through the hydraulic cylinder and extends into the limiting end, through the arrangement of the supporting plate and the elastic pieces, when the movable end is forced to move towards the limiting end, the movable end extrudes the elastic pieces so as to transmit impact force to the elastic pieces to achieve the effect of dispersing impact force, meanwhile, the movable end drives the connecting pipe to move when moving, and extrudes liquid in the hydraulic cylinder to provide reaction force, so as to further disperse and weaken the impact force of a drill bit which is down-falling, the damping effect of the power head is improved.

Description

Power device of drill rod

Technical Field

The utility model discloses a power device of a drill rod, and belongs to the technical field of pile foundation engineering.

Background

The rotary drilling rig is a construction machine suitable for hole forming operation in building foundation engineering. The method is mainly suitable for soil layer construction of sandy soil, cohesive soil, silty soil and the like, and is widely applied to foundation construction of various foundations such as cast-in-place piles, continuous walls, foundation reinforcement and the like. Rotary drilling rigs generally structurally include a machine body, a mast, a power head, a drill rod, and a drill bit. Wherein, an engine system, a winding device, a hydraulic system, a control device, a walking device and the like can be arranged on the machine body. The power head is arranged on the mast and is connected with the machine body through a pressurizing oil cylinder or a pressurizing hoisting steel wire rope. The drill rod is connected with the power head through the key sleeve so as to rotate under the driving of the power head. The drill bit is installed at the bottom of the drill rod and can be driven by the drill rod to perform drilling operation.

The working principle of the rotary drilling rig is that a full-hydraulic power head generates torque, an oil cylinder arranged on a mast provides drilling pressure, the drilling pressure is transmitted to a drill bit through a telescopic drill rod, and drilling slag is filled into the drill bit and is lifted out of a hole through a winch. Therefore, when the rotary drilling rig works, the drill rod is repeatedly hoisted and lowered through the hoisting device. When the drill rod is lowered, the drill rod is lowered to the position of the power head due to the fact that the speed is high, the gravity is large, and large impact is caused to the power head. The power head is a key component of the rotary drilling rig, and the performance of the power head directly influences the performance of the rotary drilling rig. It is therefore necessary to provide a damping device for the power head to reduce the impact on the power head when the drill pipe is lowered.

Mechanical springs are generally adopted by the current power head damping device, but the mechanical springs cannot effectively buffer drill rods falling at high speed.

Therefore, a new solution is needed to solve this problem.

SUMMERY OF THE UTILITY MODEL

The present invention has been made to solve the above problems, and an object of the present invention is to provide a drill rod power unit which has an effect of buffering an impact force generated by a drill rod undershooting at a high speed.

The utility model achieves the above objects by the following technical scheme, comprising a base and a rotating shaft, wherein the rotating shaft is arranged in the base and comprises a limiting end and a movable end, the limiting end and the movable end respectively extend out of the upper end and the lower end of the base, the limiting end and one end of the movable end in the base are connected by a connecting piece, a cavity is formed by the limiting end, the movable end and the connecting piece, the movable end can move to the limiting end by the connecting piece, a supporting plate capable of moving up and down is arranged in the cavity, a plurality of elastic pieces are arranged at the upper end and the lower end of the supporting plate, one end of each elastic piece is connected with the supporting plate, the other end of each elastic piece is connected with the limiting end or the movable end, the supporting plate is provided with a hydraulic cylinder, the movable end is provided with a connecting pipe, one end of the connecting pipe penetrates through the hydraulic cylinder and extends into the limiting end, a piston is arranged in the hydraulic cylinder, the piston is connected with the connecting pipe.

Through adopting the above-mentioned technical scheme, setting up through the connecting piece makes spacing end be connected with the expansion end, thereby it can rotate simultaneously with the expansion end to reach spacing end, the expansion end can remove to spacing end through the connecting piece simultaneously, setting through backup pad and elastic component, when the expansion end atress removes to spacing end, thereby expansion end extrusion elastic component conducts the effect that reaches the dispersed impact force to the elastic component with the impact force, through the connecting pipe, the setting of pneumatic cylinder and piston, it removes to drive the connecting pipe when the expansion end removes, thereby make the interior liquid of piston extrusion pneumatic cylinder provide reaction force, further the impact force that the dispersion weakens the drill bit and undershoots, improve the shock attenuation effect of unit head.

Preferably, the base is provided with a pulp inlet device at one end extending out of the limiting end, the pulp inlet device is movably connected with the limiting end, and the limiting end and the connecting pipe are both provided with pulp conveying holes communicated with the pulp inlet device.

Through adopting above-mentioned technical scheme, through advancing the setting in thick liquid device and defeated thick liquid hole, make the rig can slip casting to avoid just can the slip casting by the machine of will changing after drilling, improve the efficiency and the operation precision of construction.

Preferably, the pulp inlet device comprises a pulp inlet pipe and a connector, one end of the pulp inlet pipe is connected with the limiting end, the other end of the pulp inlet pipe is connected with the connector, the connector is provided with a pulp inlet hole communicated with the pulp inlet pipe, and the pulp inlet hole is communicated with the pulp conveying hole through the pulp inlet pipe.

Through adopting above-mentioned technical scheme, through advancing thick liquid pipe, connector and advancing the setting in thick liquid hole, make the thick liquid can follow into thick liquid pipe through advancing the thick liquid hole and reach defeated thick liquid pipe to reach the drill bit position and carry out the slip casting.

Preferably, the connector is provided with a one-way valve, the one-way valve comprises a convex block, a telescopic rod and a spring, the convex block is movably arranged at the opening of the grout inlet hole, one end of the telescopic rod is connected with the connector, the other end of the telescopic rod is connected with the convex block, the spring is arranged in the telescopic rod, and the convex block can move inwards to enable the grout inlet hole to be communicated with the grout conveying hole.

Through adopting above-mentioned technical scheme, through the setting of the check valve that lug, telescopic link and spring are constituteed, the lug with the connector butt under the effect of telescopic link and spring to make into thick liquid hole and keep normally closed state, when the thick liquid enters, thereby promote the lug and remove and make into thick liquid hole and defeated thick liquid hole intercommunication, the effectual anti-thick liquid that appears in slip casting in-process that prevents.

Preferably, the connecting piece is of a hollow cylindrical structure, the connecting piece is connected with the limiting end and the movable end through two end faces, the movable end is provided with a sliding groove matched with the connecting piece, and the movable end can move into the cavity through the sliding groove.

Through adopting above-mentioned technical scheme, its pivoted power can be conducted to cylindric connecting piece when connecting spacing end and expansion end, reduces the air resistance that rotates the production simultaneously, through the setting of spout, can inject its moving direction when supplementary expansion end removes.

Preferably, a gasket is arranged in the hydraulic cylinder, and the gasket is arranged at two ends through which the connecting pipe penetrates.

Through adopting above-mentioned technical scheme, through the setting of packing ring, can prevent that hydraulic oil weeping from preventing the air admission simultaneously, guarantee the effect of pneumatic cylinder.

Compared with the prior art, the utility model has the beneficial effects that:

firstly, when a drill bit is punched downwards to generate a large impact force, the movable end is driven to move so that the movable end extrudes the elastic piece to disperse the impact force, and meanwhile, the connecting pipe moves so that the piston extrudes liquid in the hydraulic cylinder to generate a reaction force, so that the impact of the drill bit on the power head can be effectively reduced under the double actions, and the damping effect of the power head is improved;

secondly, the slurry inlet device and the slurry conveying pipe enable the drilling machine to have a slurry injecting function, so that slurry can be injected after drilling is completed, the step of replacing a machine is avoided, and the construction efficiency is improved;

thirdly, the arrangement of the one-way valve can prevent the slurry return phenomenon caused by the pressure problem when the slurry inlet device enters slurry;

fourthly, the connecting piece of cylindric structure can reduce the produced air resistance of rotation when connecting spacing end and expansion end, improves pivoted power transmission effect.

Drawings

FIG. 1 is a schematic view of a power unit for a drill rod;

FIG. 2 is a cross-sectional view of a drill string power unit;

FIG. 3 is an enlarged schematic view at A in FIG. 2;

fig. 4 is an enlarged schematic view of B in fig. 2.

Reference numerals are as follows: 1. a base; 2. a rotating shaft; 201. a limiting end; 202. a movable end; 3. a connecting member; 4. A cavity; 5. a support plate; 6. an elastic member; 7. a hydraulic cylinder; 8. a connecting pipe; 9. a piston; 10. a slurry inlet device; 1001. a pulp inlet pipe; 1102. a connector; 11. a slurry conveying hole; 12. a slurry inlet hole; 13. a one-way valve; 1301. a bump; 1302. a telescopic rod; 1303. a spring; 14. a chute; 15. a gasket.

Detailed Description

In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only used for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the designated device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

A power device of a drill rod is disclosed, as shown in figures 1-4, comprising a base 1 and a rotating shaft 2, wherein the rotating shaft 2 is arranged in the base 1, the rotating shaft 2 comprises a limit end 201 and a movable end 202, the limit end 201 and the movable end 202 respectively extend out from the upper end and the lower end of the base 1, one end of the movable end 202 extending out of the base 1 is connected with a drill bit, the limit end 201 and one end of the movable end 202 in the base 1 are connected through a connecting piece 3, a cavity 4 is formed by the limit end 201 and the movable end 202 and the connecting piece 3, the connecting piece 3 can conduct power to enable the limit end 201 and the movable end 202 to keep rotating simultaneously, the movable end 202 can move towards the limit end 201 through the connecting piece 3, a support plate 5 capable of moving up and down is arranged in the cavity 4, a plurality of elastic pieces 6 are arranged at the upper end and the lower end of the support plate 5, one end of the plurality of elastic pieces 6 is connected with the support plate 5, and the other end is connected with the limit end 201 or the movable end 202, stress makes expansion end 202 remove to spacing end 201 when touching harder soil layer or stone is transferred to the drill bit, thereby the impact force that 6 dispersion drill bits of extrusion elastic component were transferred, reach absorbing effect, backup pad 5 is provided with pneumatic cylinder 7, expansion end 202 is provided with connecting pipe 8, 8 one ends of connecting pipe are run through pneumatic cylinder 7 and are extended to in the spacing end 201, be provided with piston 9 in the pneumatic cylinder 7, piston 9 is connected with connecting pipe 8, it removes to drive connecting pipe 8 when expansion end 202 removes to spacing end 201, thereby make the interior liquid of piston 9 extrusion pneumatic cylinder 7, thereby reduce the effort that expansion end 202 removed, improve the shock attenuation effect of unit head.

The base 1 is provided with a slurry inlet device 10 at one end extending out of a limiting end 201, the slurry inlet device 10 is movably connected with the limiting end 201, the limiting end 201 and a connecting pipe 8 are both provided with a slurry conveying hole 11 communicated with the slurry inlet device 10, the slurry inlet device 10 and the slurry conveying hole 11 enable a drilling machine to finish two steps of drilling and grouting, and the link of machine replacement is reduced, so that the construction is more convenient, the slurry inlet device 10 comprises a slurry inlet pipe 1001 and a connecting head 1102, one end of the slurry inlet pipe 1001 is connected with the limiting end 201, the other end of the slurry inlet pipe is connected with the connecting head 1102, the connecting head 1102 is provided with a slurry inlet hole 12 communicated with the slurry inlet pipe 1001, the slurry inlet hole 12 is communicated with the slurry conveying hole 11 through the slurry inlet pipe 1001, slurry enters the slurry inlet pipe 1001 from the slurry inlet hole 12, then reaches the position of a drill bit through the slurry conveying hole 11, and can be injected to finish the grouting process in the process of raising the drill bit after the drilling is finished, the connector 1102 is provided with a one-way valve 13, the one-way valve 13 can prevent problems such as reverse grouting caused by pressure in the grouting process, the one-way valve 13 comprises a bump 1301, an expansion link 1302 and a spring 1303, the bump 1301 is movably arranged at the opening of the grout inlet hole 12, one end of the expansion link 1302 is connected with the connector 1102, the other end of the expansion link 1302 is connected with the bump 1301, the spring 1303 is arranged in the expansion link 1302, the bump 1301 can move inwards to enable the grout inlet hole 12 to be communicated with the grout conveying hole 11, the bump 1301 is abutted against the connector 1102 under the action of the expansion link 1302 and the spring 1303 to enable the grout inlet hole 12 to be kept in a normally closed state, and when grouting is required, the bump 1301 is pushed inwards to move under the action force of grout, so that the grout inlet hole 12 is communicated with the grout conveying hole 11 again.

Connecting piece 3 is hollow cylindric structure, connecting piece 3 is connected the face with spacing end 201 and expansion end 202 and is two terminal surfaces, cylindric structure is more stable, simultaneously can not influence spacing end 201 and expansion end 202 and rotate, expansion end 202 seted up with connecting piece 3 matched with spout 14, expansion end 202 accessible spout 14 removes in cavity 4, spout 14 can inject the removal route of expansion end 202 when supplementary expansion end 202 removes, be provided with packing ring 15 in the pneumatic cylinder 7, packing ring 15 sets up in the both ends that the connecting pipe 8 runs through, packing ring 15 can prevent 7 weepings of pneumatic cylinder, prevent air admission, keep the shock attenuation effect.

When the rig was when drilling, the unit head was transferred and is driven the drill bit and remove, effort conduction to expansion end 202 when the drill bit touched harder soil layer or stone, make expansion end 202 remove extrusion elastic component 6 dispersion effort to spacing end 201, connecting pipe 8 moves down at the drive of expansion end 202 simultaneously and makes the interior liquid of piston 9 extrusion pneumatic cylinder 7 provide reaction force, thereby reach the effect of shock attenuation bradyseism, when accomplishing the drilling and will carry out the slip casting, the thick liquid gets into from advancing thick liquid hole 12, it makes into thick liquid hole 12 and defeated thick liquid hole 11 and is linked together to promote lug 1301 inwards to remove, thereby make thick liquid can reach the drill bit position through defeated thick liquid hole 11, thereby carry out the slip casting.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides a power device of drilling rod, includes base (1) and pivot (2), pivot (2) set up in base (1), its characterized in that: the rotating shaft (2) comprises a limiting end (201) and a movable end (202), the limiting end (201) and the movable end (202) extend out of the upper end and the lower end of the base (1) respectively, the limiting end (201) is connected with one end, in the base (1), of the movable end (202) through a connecting piece (3), a cavity (4) is formed by the limiting end (201), the movable end (202) and the connecting piece (3), the movable end (202) can move towards the limiting end (201) through the connecting piece (3), a supporting plate (5) capable of moving up and down is arranged in the cavity (4), a plurality of elastic pieces (6) are arranged at the upper end and the lower end of the supporting plate (5), one end of each elastic piece (6) is connected with the supporting plate (5), the other end of each elastic piece is connected with the limiting end (201) or the movable end (202), a hydraulic cylinder (7) is arranged on the supporting plate (5), the movable end (202) is provided with connecting pipe (8), connecting pipe (8) one end is run through in pneumatic cylinder (7) extends to spacing end (201), be provided with piston (9) in pneumatic cylinder (7), piston (9) are connected with connecting pipe (8).

2. The drill string power plant according to claim 1, wherein: the base (1) is located the one end that spacing end (201) stretches out and is provided with into thick liquid device (10), advance thick liquid device (10) and spacing end (201) swing joint, spacing end (201) and connecting pipe (8) all set up with advance defeated thick liquid hole (11) that thick liquid device (10) are linked together.

3. The drill string power plant according to claim 2, wherein: the slurry inlet device (10) comprises a slurry inlet pipe (1001) and a connector (1102), one end of the slurry inlet pipe (1001) is connected with a limiting end (201), the other end of the slurry inlet pipe is connected with the connector (1102), a slurry inlet hole (12) communicated with the slurry inlet pipe (1001) is formed in the connector (1102), and the slurry inlet hole (12) is communicated with a slurry conveying hole (11) through the slurry inlet pipe (1001).

4. A drill string power plant according to claim 3, characterized in that: connector (1102) are provided with check valve (13), check valve (13) are including lug (1301), telescopic link (1302) and spring (1303), lug (1301) activity sets up in advancing thick liquid hole (12) opening part, telescopic link (1302) one end is connected the other end with connector (1102) and is connected with lug (1301), spring (1303) set up in telescopic link (1302), lug (1301) can inwards be removed and make into thick liquid hole (12) and defeated thick liquid hole (11) and be linked together.

5. The drill string power plant according to claim 1, wherein: connecting piece (3) are hollow cylindric structure, connecting piece (3) are two terminal surfaces with spacing end (201) and expansion end (202) connection face, expansion end (202) are seted up with connecting piece (3) matched with spout (14), expansion end (202) accessible spout (14) are removed to cavity (4).

6. The drill string power plant according to claim 1, wherein: be provided with packing ring (15) in pneumatic cylinder (7), packing ring (15) set up in the both ends that connecting pipe (8) run through.