CN113357206A - Energy storage mechanism for hydraulic rock drill - Google Patents

Energy storage mechanism for hydraulic rock drill Download PDF

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Publication number
CN113357206A
CN113357206A CN202110736598.0A CN202110736598A CN113357206A CN 113357206 A CN113357206 A CN 113357206A CN 202110736598 A CN202110736598 A CN 202110736598A CN 113357206 A CN113357206 A CN 113357206A
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CN
China
Prior art keywords
pressure
low
pressure channel
channel
rock drill
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Pending
Application number
CN202110736598.0A
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Chinese (zh)
Inventor
周明
伍国正
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Hunan Lieyan Technology Co ltd
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Hunan Lieyan Technology Co ltd
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Priority to CN202110736598.0A priority Critical patent/CN113357206A/en
Publication of CN113357206A publication Critical patent/CN113357206A/en
Pending legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
    • F15B1/02—Installations or systems with accumulators
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B1/00—Percussion drilling
    • E21B1/12—Percussion drilling with a reciprocating impulse member
    • E21B1/24—Percussion drilling with a reciprocating impulse member the impulse member being a piston driven directly by fluid pressure
    • E21B1/26—Percussion drilling with a reciprocating impulse member the impulse member being a piston driven directly by fluid pressure by liquid pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/08—Characterised by the construction of the motor unit
    • F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
    • F15B15/1423—Component parts; Constructional details
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/08—Characterised by the construction of the motor unit
    • F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
    • F15B15/149—Fluid interconnections, e.g. fluid connectors, passages

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Earth Drilling (AREA)
  • Percussive Tools And Related Accessories (AREA)

Abstract

The invention discloses an energy storage mechanism for a hydraulic rock drill, which comprises: the rock drill body is provided with an energy accumulator; the oil return pipeline comprises a high-pressure section and a low-pressure section, the high-pressure section is communicated with the high-pressure energy accumulator, and the low-pressure section is communicated with the low-pressure energy accumulator. The high-pressure accumulator can temporarily accommodate the hydraulic oil extruded by backward movement of the impact piston in the return stroke process of the impact piston, so that the energy storage function is realized; during the stroke of the impact piston, the hydraulic oil contained in the high-pressure accumulator is released to push the impact piston, thereby realizing the reutilization of energy; the low-pressure energy accumulator can temporarily contain hydraulic oil when the hydraulic pressure is large and release the hydraulic oil when the hydraulic pressure is small, so that the functions of filtering high and low peak waves and stabilizing the hydraulic pressure are realized, and the problem of large jumping amplitude of an oil pipe is solved.

Description

Energy storage mechanism for hydraulic rock drill
Technical Field
The invention mainly relates to the technical field of hydraulic rock drilling equipment, in particular to an energy storage mechanism for a hydraulic rock drill.
Background
The hydraulic rock drill is a rock drill machine which uses high-pressure oil as power to drive a piston to impact a drill rod and is provided with an independent swing mechanism. The hydraulic rock drill controls the piston to reciprocate, and drives the drill rod to repeatedly impact the rock so as to realize the cutting function of the rock drill. The oil pressure is higher than the air pressure, and the working efficiency is higher as the oil pressure is higher than the air pressure and can reach more than 10 MPa. Although the hydraulic rock drill is similar to the pneumatic rock drill, the piston has smaller diameter, larger length and better waveform, thereby having the characteristics of high drilling speed, high impact power, large torque, high frequency and the like.
The existing hydraulic rock drill does not have a special energy storage mechanism, energy during return stroke of an impact piston cannot be stored in the working process, and rapid reversing causes large pressure fluctuation of hydraulic oil, so that impact stability is reduced and an oil pipe jumps.
Disclosure of Invention
The invention mainly aims to overcome the defects in the prior art and solve the problems of large pressure fluctuation of hydraulic oil, low impact stability and oil pipe jumping caused by the fact that the existing hydraulic rock drill cannot store energy in the working process.
In order to achieve the purpose, the invention discloses an energy storage mechanism for a hydraulic rock drill, which comprises: the rock drill comprises a rock drill body and an oil return pipeline, wherein the rock drill body is respectively provided with two high-pressure energy accumulators and a low-pressure energy accumulator; the two high-pressure energy accumulators are positioned on the adjacent sides of the rock drill body, the low-pressure energy accumulator is positioned on the opposite side of one high-pressure energy accumulator, and the two high-pressure energy accumulators are communicated through the oil return pipeline;
the oil return pipeline comprises a high-pressure section and a low-pressure section, the high-pressure section is communicated with the high-pressure energy accumulator, and the low-pressure section is communicated with the low-pressure energy accumulator.
As a further improvement of the above technical solution:
the high-pressure accumulator and the low-pressure accumulator are both diaphragm type accumulators.
The tail part of the rock drill body is respectively provided with a high-pressure oil port and a low-pressure oil port; the inlet end of the high-pressure section is connected with the high-pressure oil port, and the outlet end of the low-pressure section is connected with the low-pressure oil port.
The high-pressure section comprises a first high-pressure channel, a second high-pressure channel, a third high-pressure channel, a fourth high-pressure channel, a fifth high-pressure channel and a sixth high-pressure channel which are sequentially connected, wherein the third high-pressure channel and the fourth high-pressure channel are communicated through a high-pressure annular groove.
The first high-pressure channel is in a curve shape, and the inlet end of the first high-pressure channel is connected with the high-pressure oil port;
the second high-pressure channel is distributed along the axial direction of the impact piston of the rock drill body, the inlet end of the second high-pressure channel is connected with the outlet end of the first high-pressure channel, and the outlet end of the second high-pressure channel is connected with the inlet end of the buffer channel through a damping hole;
the inlet end of the third high-pressure channel is communicated with the middle part of the second high-pressure channel, and the outlet end of the third high-pressure channel is connected with the high-pressure annular groove;
the inlet end of the fourth high-pressure channel is connected with the high-pressure annular groove;
the inlet end of the fifth high-pressure channel is connected with the outlet end of the fourth high-pressure channel, and the outlet end of the fifth high-pressure channel is communicated with the middle part of the sixth high-pressure channel;
the sixth high-pressure channel and the fifth high-pressure channel are vertically arranged, and the end parts of the sixth high-pressure channel are respectively connected with one high-pressure energy accumulator.
An impact cylinder is formed in the rock drill body, an impact cylinder sleeve is detachably mounted in the impact cylinder, and an impact piston is mounted in the impact cylinder sleeve in a matched mode; and an oil supply hole is formed in the impact cylinder sleeve and is communicated with the middle of the third high-pressure channel through an oil supply pipe, and hydraulic oil can enter the inner cavity of the impact cylinder sleeve from the third high-pressure channel to push the impact piston.
The low-pressure section comprises a first low-pressure channel, a second low-pressure channel and a third low-pressure channel which are connected in sequence.
The first low-pressure channel and the second high-pressure channel are arranged in parallel, and the inlet end of the first low-pressure channel is communicated with the oil return pipe;
the second low-pressure channel is vertically arranged with the first low-pressure channel, the inlet end of the second low-pressure channel is communicated with the middle part of the first low-pressure channel, and the outlet end of the second low-pressure channel is connected with the low-pressure accumulator;
the third low-pressure channel is in a curve shape, the inlet end of the third low-pressure channel is connected with the outlet end of the first low-pressure channel, and the outlet end of the third low-pressure channel is connected with the low-pressure oil port.
Compared with the prior art, the invention has the advantages that:
the high-pressure energy accumulator is communicated with the high-pressure section of the oil return pipeline, and can temporarily contain the hydraulic oil extruded by backward movement of the impact piston in the return stroke process of the impact piston, so that the energy storage function is realized; during the stroke of the impact piston, the hydraulic oil contained in the high-pressure accumulator is released for pushing the impact piston, so that energy is reused. Moreover, through setting up the low pressure energy storage ware that communicates with the time oil return line low pressure section, the low pressure energy storage ware can hold hydraulic oil temporarily when hydraulic pressure is great to release it when hydraulic pressure is less, thereby realize filtering height peak ripples, stabilize hydraulic function, and then solved the big problem of oil pipe range of beating.
Drawings
Fig. 1 is a schematic sectional view (in part) of an energy storage mechanism for a hydraulic rock drill according to the invention;
FIG. 2 is a schematic cross-sectional view M-M of FIG. 1;
FIG. 3 is a schematic view of section N-N of FIG. 1;
fig. 4 is a schematic cross-sectional view of the rock drill body.
The reference numerals in the figures denote: 11. a high pressure accumulator; 12. a low pressure accumulator; 21. a high-pressure oil port; 22. a low pressure oil port; 31. a first high pressure channel; 32. a second high pressure channel; 33. a third high pressure channel; 34. a fourth high pressure channel; 35. a fifth high pressure channel; 36. a sixth high pressure channel; 37. a high pressure annular groove; 41. a first low pressure passage; 42. a second low pressure passage; 43. a third low pressure passage; 51. impacting the cylinder sleeve; 52. an impact piston; 53. an oil supply pipe.
Detailed Description
The invention will be described in further detail below with reference to the drawings and specific examples.
The invention discloses an energy storage mechanism for a hydraulic rock drill.
As shown in fig. 1 to 4, the energy storage mechanism for a hydraulic rock drill of the present embodiment includes a rock drill body and an oil return line, wherein two high-pressure energy accumulators 11 and one low-pressure energy accumulator 12 are respectively disposed on the rock drill body; the two high-pressure energy accumulators 11 are positioned on the adjacent sides of the rock drill body, the low-pressure energy accumulator 12 is positioned on the opposite side of one high-pressure energy accumulator 11, and the two high-pressure energy accumulators 11 are communicated through an oil return pipeline;
the oil return pipeline comprises a high-pressure section and a low-pressure section, the high-pressure section is communicated with the high-pressure energy accumulator 11, and the low-pressure section is communicated with the low-pressure energy accumulator 12.
By arranging the high-pressure energy accumulator 11 communicated with the high-pressure section of the oil return pipeline, the high-pressure energy accumulator 11 can temporarily contain hydraulic oil extruded by backward movement of the impact piston in the return stroke process of the impact piston, so that the energy storage function is realized; during the stroke of the impact piston, the hydraulic oil contained in the high-pressure accumulator 11 is released for pushing the impact piston, so that energy is reused. Moreover, through setting up the low pressure energy storage ware 12 with return oil pipe way low pressure section intercommunication, low pressure energy storage ware 12 can hold hydraulic oil temporarily when hydraulic pressure is great to release it when hydraulic pressure is less, thereby realize filtering peak wave, stabilize hydraulic function, and then solved the big problem of oil pipe range of beating.
In this embodiment, the high-pressure accumulator 11 and the low-pressure accumulator 12 are both diaphragm accumulators.
Compared with other types of accumulators, the diaphragm accumulator has the characteristics of stable performance, convenience in use and the like, and the diaphragm accumulator usually comprises a compensation circuit, so that the deviation range can be effectively controlled to improve the stability. And the diaphragm type energy accumulator mostly adopts a built-in pressure generating element and is provided with an electronic switch, and the parameter setting can be carried out only by a key, so the diaphragm type energy accumulator is convenient to use.
In the embodiment, the tail part of the rock drill body is respectively provided with a high-pressure oil port 21 and a low-pressure oil port 22; the inlet end of the high-pressure section is connected with a high-pressure oil port 21, and the outlet end of the low-pressure section is connected with a low-pressure oil port 22.
The high-pressure oil port 21 is used for inputting hydraulic oil in a high-pressure state to the oil return pipeline from the outside, and the low-pressure oil port 22 is used for discharging the hydraulic oil in a low-pressure state to the outside from the oil return pipeline, and the high-pressure oil port and the low-pressure oil port are part of an oil path of the hydraulic rock drill.
In this embodiment, the high pressure section includes a first high pressure passage 31, a second high pressure passage 32, a third high pressure passage 33, a fourth high pressure passage 34, a fifth high pressure passage 35, and a sixth high pressure passage 36, which are connected in sequence, wherein the third high pressure passage 33 and the fourth high pressure passage 34 are communicated by a high pressure annular groove 37.
Because the internal structure of the hydraulic rock drill is complex and precise, in order to be better matched with each part and reduce interference, the high-pressure section is split into different channels to respectively play a role.
In this embodiment, the first high-pressure passage 31 is curved, and the inlet end of the first high-pressure passage 31 is connected to the high-pressure oil port 21;
the second high-pressure channel 32 is distributed along the axial direction of the impact piston of the rock drill body, the inlet end of the second high-pressure channel 32 is connected with the outlet end of the first high-pressure channel 31, and the outlet end of the second high-pressure channel 32 is connected with the inlet end of the buffer channel through a damping hole;
the inlet end of the third high-pressure channel 33 is communicated with the middle part of the second high-pressure channel 32, and the outlet end of the third high-pressure channel 33 is connected with the high-pressure annular groove 37;
the inlet end of the fourth high-pressure passage 34 is connected to the high-pressure annular groove 37;
the inlet end of the fifth high-pressure channel 35 is connected with the outlet end of the fourth high-pressure channel 34, and the outlet end of the fifth high-pressure channel 35 is communicated with the middle part of the sixth high-pressure channel 36;
the sixth high-pressure channel 36 is arranged perpendicular to the fifth high-pressure channel 35, and the ends of the sixth high-pressure channel 36 are each connected to a high-pressure accumulator 11.
Each high-pressure channel is arranged according to the internal structure of the hydraulic rock drill, the layout is optimized, and the internal space of the hydraulic rock drill is reasonably utilized.
In the embodiment, an impact cylinder is formed in the rock drill body, an impact cylinder sleeve 51 is detachably mounted in the impact cylinder, and an impact piston 52 is mounted in the impact cylinder sleeve 51 in a matching manner; an oil supply hole is formed in the impact cylinder sleeve 51, the oil supply hole is communicated with the middle of the third high-pressure channel 33 through an oil supply pipe 53, and hydraulic oil can enter an inner cavity of the impact cylinder sleeve 51 from the third high-pressure channel 33 to push the impact piston 52.
Damage to the chamber wall may occur because the impact piston 52 will repeatedly rub against the chamber wall during operation. In order to prolong the service life of the hydraulic rock drill and reduce the use cost, a detachable impact cylinder sleeve 51 is arranged in the impact cylinder. In order to be able to feed hydraulic oil into the interior space to move the percussion piston 52, an oil supply line 53 is provided which is connected to the third high-pressure channel 33.
In the present embodiment, the low pressure section includes a first low pressure passage 41, a second low pressure passage 42, and a third low pressure passage 43 connected in this order.
Because the internal structure of the hydraulic rock drill is complex and precise, in order to be better matched with each part and reduce interference, the high-pressure section is split into different channels to respectively play a role.
In this embodiment, the first low-pressure passage 41 and the second high-pressure passage 32 are arranged in parallel, and the inlet end of the first low-pressure passage 41 is communicated with the oil return pipe;
the second low-pressure passage 42 is vertically arranged with the first low-pressure passage 41, the inlet end of the second low-pressure passage 42 is communicated with the middle part of the first low-pressure passage 41, and the outlet end of the second low-pressure passage 42 is connected with the low-pressure accumulator 12;
the third low pressure passage 43 is curved, and the inlet end of the third low pressure passage 43 is connected with the outlet end of the first low pressure passage 41, and the outlet end of the third low pressure passage 43 is connected with the low pressure oil port 22.
Each low pressure passageway sets up according to hydraulic rock drill's inner structure, and the optimal layout utilizes hydraulic rock drill's inner space rationally.
Although the present invention has been described with reference to the preferred embodiments, it is not intended to be limited thereto. Those skilled in the art can make numerous possible variations and modifications to the present invention, or modify equivalent embodiments to equivalent variations, without departing from the scope of the invention, using the teachings disclosed above. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention should fall within the protection scope of the technical scheme of the present invention, unless the technical spirit of the present invention departs from the content of the technical scheme of the present invention.

Claims (8)

1. An energy storage mechanism for a hydraulic rock drill comprises a rock drill body and an oil return pipeline, and is characterized in that two high-pressure energy accumulators (11) and one low-pressure energy accumulator (12) are respectively arranged on the rock drill body; the two high-pressure energy accumulators (11) are positioned on the adjacent sides of the rock drill body, the low-pressure energy accumulator (12) is positioned on the opposite side of one high-pressure energy accumulator (11), and the two high-pressure energy accumulators (11) are communicated through the oil return pipeline;
the oil return pipeline comprises a high-pressure section and a low-pressure section, the high-pressure section is communicated with the high-pressure energy accumulator (11), and the low-pressure section is communicated with the low-pressure energy accumulator (12).
2. Energy storage mechanism for a hydraulic rock drill according to claim 1, characterized in that the high-pressure accumulator (11) and the low-pressure accumulator (12) are both diaphragm accumulators.
3. The energy storage mechanism for the hydraulic rock drill according to claim 2, characterized in that the tail of the rock drill body is respectively provided with a high-pressure oil port (21) and a low-pressure oil port (22); the inlet end of the high-pressure section is connected with the high-pressure oil port (21), and the outlet end of the low-pressure section is connected with the low-pressure oil port (22).
4. The energy storage mechanism for a hydraulic rock drill according to claim 3, characterized in that the high-pressure section comprises a first high-pressure channel (31), a second high-pressure channel (32), a third high-pressure channel (33), a fourth high-pressure channel (34), a fifth high-pressure channel (35) and a sixth high-pressure channel (36) which are connected in sequence, wherein the third high-pressure channel (33) and the fourth high-pressure channel (34) are communicated with each other through a high-pressure annular groove (37).
5. The energy storage mechanism for a hydraulic rock drill according to claim 4, characterized in that the first high-pressure passage (31) is curved, and the inlet end of the first high-pressure passage (31) is connected with the high-pressure oil port (21);
the second high-pressure channel (32) is distributed along the axial direction of an impact piston (52) of the rock drill body, the inlet end of the second high-pressure channel (32) is connected with the outlet end of the first high-pressure channel (31), and the outlet end of the second high-pressure channel (32) is connected with the inlet end of a buffer channel through a damping hole;
the inlet end of the third high-pressure channel (33) is communicated with the middle part of the second high-pressure channel (32), and the outlet end of the third high-pressure channel (33) is connected with the high-pressure annular groove (37);
the inlet end of the fourth high-pressure channel (34) is connected with the high-pressure annular groove (37);
the inlet end of the fifth high-pressure channel (35) is connected with the outlet end of the fourth high-pressure channel (34), and the outlet end of the fifth high-pressure channel (35) is communicated with the middle part of the sixth high-pressure channel (36);
the sixth high-pressure channel (36) and the fifth high-pressure channel (35) are vertically arranged, and the end parts of the sixth high-pressure channel (36) are respectively connected with one high-pressure accumulator (11).
6. The energy storage mechanism for the hydraulic rock drill is characterized in that an impact cylinder is formed inside the rock drill body, an impact cylinder sleeve (51) is detachably mounted in the impact cylinder, and an impact piston (52) is mounted in the impact cylinder sleeve (51) in a matching mode; be formed with the oil feed hole on striking cylinder liner (51), the oil feed hole through supply oil pipe (53) with third high-pressure channel (33) middle part intercommunication, hydraulic oil can be followed third high-pressure channel (33) get into strike cylinder liner (51) inner chamber is in order to promote strike piston (52).
7. An energy accumulating mechanism for a hydraulic rock drill according to any one of claims 3-6, characterized in that the low pressure section comprises a first low pressure passage (41), a second low pressure passage (42) and a third low pressure passage (43) connected in series.
8. The energy storage mechanism for a hydraulic rock drill according to claim 7, characterized in that the first low-pressure passage (41) is arranged in parallel with the second high-pressure passage (32), and the inlet end of the first low-pressure passage (41) is communicated with an oil return pipe;
the second low-pressure channel (42) is vertically arranged with the first low-pressure channel (41), the inlet end of the second low-pressure channel (42) is communicated with the middle part of the first low-pressure channel (41), and the outlet end of the second low-pressure channel (42) is connected with the low-pressure accumulator (12);
the third low-pressure channel (43) is curved, the inlet end of the third low-pressure channel (43) is connected with the outlet end of the first low-pressure channel (41), and the outlet end of the third low-pressure channel (43) is connected with the low-pressure oil port (22).
CN202110736598.0A 2021-06-30 2021-06-30 Energy storage mechanism for hydraulic rock drill Pending CN113357206A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110736598.0A CN113357206A (en) 2021-06-30 2021-06-30 Energy storage mechanism for hydraulic rock drill

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110736598.0A CN113357206A (en) 2021-06-30 2021-06-30 Energy storage mechanism for hydraulic rock drill

Publications (1)

Publication Number Publication Date
CN113357206A true CN113357206A (en) 2021-09-07

Family

ID=77537406

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110736598.0A Pending CN113357206A (en) 2021-06-30 2021-06-30 Energy storage mechanism for hydraulic rock drill

Country Status (1)

Country Link
CN (1) CN113357206A (en)

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