CN114934558A - Full hydraulic rotary-impact crusher - Google Patents

Full hydraulic rotary-impact crusher Download PDF

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Publication number
CN114934558A
CN114934558A CN202210347988.3A CN202210347988A CN114934558A CN 114934558 A CN114934558 A CN 114934558A CN 202210347988 A CN202210347988 A CN 202210347988A CN 114934558 A CN114934558 A CN 114934558A
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China
Prior art keywords
piston
cylinder body
drill rod
sawtooth
teeth
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CN202210347988.3A
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Chinese (zh)
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CN114934558B (en
Inventor
高二庆
王倩
李娟�
梁奎
李云鹏
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Xuzhou But Construction Machinery Manufacturing Joint Stock Co ltd
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Xuzhou But Construction Machinery Manufacturing Joint Stock Co ltd
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Publication of CN114934558A publication Critical patent/CN114934558A/en
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    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F5/00—Dredgers or soil-shifting machines for special purposes
    • E02F5/30—Auxiliary apparatus, e.g. for thawing, cracking, blowing-up, or other preparatory treatment of the soil
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F5/00—Dredgers or soil-shifting machines for special purposes
    • E02F5/30—Auxiliary apparatus, e.g. for thawing, cracking, blowing-up, or other preparatory treatment of the soil
    • E02F5/305—Arrangements for breaking-up hard ground
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20—Drives; Control devices
    • E02F9/22—Hydraulic or pneumatic drives
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20—Drives; Control devices
    • E02F9/22—Hydraulic or pneumatic drives
    • E02F9/2264—Arrangements or adaptations of elements for hydraulic drives
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/62—Plastics recycling; Rubber recycling

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Earth Drilling (AREA)
  • Crushing And Pulverization Processes (AREA)

Abstract

The invention discloses a full-hydraulic rotating-impacting type crushing machine, which comprises a hydraulic system, a piston part and a drill rod part, wherein the hydraulic system drives the piston part to rotate and drives the drill rod part to rotate, the hydraulic system simultaneously drives the piston part to impact up and down, and the full-hydraulic rotating-impacting type crushing machine realizes the combined motion of continuous rotation and intermittent impact. The invention relates to a full-hydraulic rotary-impact crusher which uses hydraulic pressure as power to drive a piston to rotate and drive a drill rod to rotate, and the hydraulic pressure simultaneously drives the piston to impact up and down to implement a crushing hammer with a continuous rotation and intermittent impact compound motion principle. The drill rod is driven in a full hydraulic mode, the drill rod rotates continuously and strikes intermittently at the same time, crushing loading with complex stress is obtained, and crushing efficiency and efficiency are effectively improved.

Description

Full hydraulic rotary-impact crusher
Technical Field
The invention belongs to the field of breaking hammers of engineering machinery, and particularly relates to a full-hydraulic rotary-impact type breaking machine.
Background
The tail end of the excavator or the loader is provided with a breaking hammer, so that the mine, the building and the road facility can be broken and dismantled. The working principle of the existing breaking hammer is that a main machine is used for providing hydraulic power, a hydraulic piston of the breaking hammer continuously strikes a drill rod, and the drill rod continuously impacts a breaking body.
The traditional breaking hammer drives a piston rod by hydraulic drive and nitrogen energy storage boosting, and the piston rod impacts a drill rod to realize breaking action. CN111188510A hydraulic breaking hammer with static pressure bearing structure invents an upper hydraulic cylinder body (nitrogen), a middle hydraulic cylinder body (big chamber) and a lower hydraulic cylinder body (small chamber), and utilizes nitrogen power and middle cylinder hydraulic power to realize rapid striking and secondary striking function of a lower cylinder. CN111456618A A Secondary impact Hydraulic breaking hammer is characterized in that a secondary drill rod is sleeved in a main drill rod, a piston rod simultaneously impacts the main drill rod and the secondary drill rod to finish primary impact, and secondary impact is realized along with gradual pressing down of the drill rod. The invention patent 202011310016.4 Laval type gas-liquid double-power dust-free rock breaking machine utilizes double power of hydraulic pressure and air pressure to realize the breaking of low-frequency resonance and high-frequency continuous striking.
Based on the working principle of the breaking hammer, the invention mainly focuses on improving the striking mode of a drill rod on a breaking body and improving the breaking effect. The crusher adopts the combined action principle of continuous rotation and intermittent impact, realizes the combined action of rotary torsion and impact striking on a crushing body, and realizes larger crushing power and crushing effect.
Disclosure of Invention
In view of the fact that various existing crushing machines are in an intermittent striking and crushing mode, crushing efficiency is not high. The invention aims to provide a full-hydraulic rotary-impact crusher which can be conveniently connected with an excavator so as to solve the problems.
In order to achieve the purpose, the invention adopts the following technical scheme:
a full-hydraulic rotary-impact crusher comprises a hydraulic system, a piston part and a drill rod part, wherein the hydraulic system drives the piston part to rotate and drives the drill rod part to rotate, the hydraulic system simultaneously drives the piston part to impact up and down, and the full-hydraulic rotary-impact crusher realizes continuous rotation and intermittent impact combined motion.
The hydraulic system is hydraulic motor, and the piston part includes the piston, and the drill rod part includes the drill rod, and hydraulic motor, piston, drill rod set up in last cylinder body, well cylinder body assembly, the lower cylinder body assembly that top-down connected gradually, wherein:
the hydraulic motor is positioned at the top of the upper cylinder body, the output end of the hydraulic motor is connected with the upper end of the piston, and the hydraulic motor drives the piston to rotate and impact up and down;
the upper end of the piston is positioned in the upper cylinder body, the middle part of the piston is positioned in the middle cylinder body assembly, the lower end of the piston is positioned in the lower cylinder body assembly, and the lower end of the piston is mechanically connected with a drill rod and drives the drill rod to rotate; the lower part of the piston is provided with dynamic sawtooth lower teeth, the lower cylinder body is internally provided with fixed static sawtooth upper teeth, and the fixed static sawtooth upper teeth can be meshed with the dynamic sawtooth lower teeth arranged at the lower part of the piston;
the upper half part of the drill rod is positioned in the lower cylinder assembly, and the lower half part of the drill rod extends out of the lower part of the cylinder assembly.
The cylinder body assembly is characterized by further comprising a through bolt assembly, wherein the through bolt assembly is connected with the upper cylinder body, the middle cylinder body assembly and the lower cylinder body assembly.
The hydraulic motor is connected with a long-stroke spline shaft arranged at the upper end of the piston through a long-stroke spline shaft extending out of the bottom of the hydraulic motor to rotate, and the stroke length is 3-4 times of the tooth depth of the dynamic sawtooth arranged at the lower part of the piston.
The drill rod is characterized in that a pair of obliquely symmetrical steps is arranged at the lower end of the piston, a linear boss is arranged at the upper end of the drill rod, and the piston can be rapidly butted with the drill rod when rotating to rapidly drive the drill rod to rotate.
The middle cylinder body assembly comprises a middle cylinder body, a hole for the piston to pass through is formed in the middle cylinder body, a rear lining is arranged on the upper portion in the hole, a reversing valve is arranged on the upper portion of the middle cylinder body, and an oil inlet and an oil outlet are formed in the side wall of the middle cylinder body.
The lower cylinder body assembly comprises a lower cylinder body, a hole for the piston to pass through is formed in the lower cylinder body, an inner sleeve is arranged at the upper part in the hole, and fixed static sawtooth upper teeth are arranged on the hole wall below the inner sleeve; the bottom of the lower cylinder body is provided with an outer guide sleeve, the side wall of the lower cylinder body is provided with a drill rod pin and an outer sleeve pin, the drill rod pin is arranged at the position of a reducing groove in the middle of a drill rod, the drill rod is convenient to rotate and prevent the drill rod from falling off, and the outer sleeve pin is arranged at the position of the outer guide sleeve and used for fixing the outer guide sleeve.
The hydraulic motor drives the piston to rotate, a pair of meshing bodies is formed by the lower dynamic sawtooth teeth on the rotating piston and the upper fixed static sawtooth teeth in the lower cylinder body, the lower dynamic sawtooth teeth rotate along with the piston, the lower dynamic sawtooth teeth move along the contact surface with the upper fixed static sawtooth teeth, the rotating piston gradually rises towards the upper part, when the lowest end of the lower dynamic sawtooth teeth is connected with the highest end of the upper fixed static sawtooth teeth, the contact tooth surface is suddenly moved out, the pressure of the upper rotating piston cavity is increased, the pressure of the lower piston cavity is reduced simultaneously, the piston is pressed downwards, the lower dynamic sawtooth teeth are instantly and completely meshed with the adjacent teeth of the upper fixed static sawtooth teeth, the rotating piston moves downwards for a sawtooth depth suddenly, one-time striking of the rotating piston on the drill rod is realized, then the lower dynamic sawtooth teeth and the adjacent teeth of the upper static sawtooth teeth repeat the movement on the contact surface, and then the lower dynamic sawtooth teeth suddenly move out of the contact surface, the hydraulic power presses the rotary piston back again, and the rotary drill rod is struck by the rotary piston again.
And the lower teeth of the dynamic sawtooth of one circle and the upper teeth of the fixed static sawtooth of the piston are provided with N sawtooth meshing tooth surfaces, so that the drill rod is beaten for N times by one circle of rotation of the piston, and the piston continuously rotates to realize continuous and intermittent beating of the piston on the drill rod.
The upper cylinder body, the piston, the middle cylinder body, the lining and the piston ring form an upper piston cavity, the middle cylinder body assembly, the piston, the lower cylinder body assembly, the lining and the piston ring form a lower piston cavity, and the upper piston cavity and the lower piston cavity are connected with an oil inlet and an oil outlet and a reversing valve which are arranged in the middle cylinder body assembly; positively pressurizing the upper cavity of the piston, slightly pressurizing the lower cavity of the piston, and rotating the crushing machine; pressurizing the upper piston cavity twice positively, pressurizing the lower piston cavity slightly positively, impacting and rotating the crusher, and circulating the steps periodically; the oil inlet and outlet are matched with the reversing valve, so that the pressure of the upper cavity of the piston is changed, the up-and-down periodic motion of the piston is realized, and the motion frequency of the piston is consistent with the meshing frequency of the upper teeth of the fixed static sawteeth and the lower teeth of the dynamic sawteeth.
The head of the drill rod is in a shape of a straight line, a trisection or a cross.
Has the advantages that: the invention relates to a full hydraulic rotary-impact crusher which takes hydraulic pressure as power to drive a piston to rotate and drive a drill rod to rotate, and the piston is simultaneously driven by the hydraulic pressure to impact up and down to implement a crushing hammer with a continuous rotation and intermittent impact compound motion principle. The drill rod is driven in a full hydraulic mode, the drill rod rotates continuously and strikes intermittently at the same time, crushing loading with complex stress is obtained, and crushing efficiency and efficiency are effectively improved.
Drawings
FIG. 1 is an exploded view of the full hydraulic rotary-impact crusher of the present invention;
FIG. 2a is a schematic overall result of the full hydraulic rotary-impact crusher of the present invention;
FIG. 2b is a cross-sectional view taken along line A-A of FIG. 2 a;
FIG. 2c is a side view of FIG. 2 a;
FIG. 3a is a schematic view of a transmission connection structure of a hydraulic motor and a piston;
FIG. 3b is a front view of FIG. 3 a;
FIG. 3c is a cross-sectional view taken along line B-B of FIG. 3B;
FIGS. 4a to 4c are schematic views illustrating the engagement of the dynamic serrations and the static serrations of the piston according to the present invention;
FIG. 5a is a schematic view of a piston and drill rod transmission connection structure;
FIG. 5b is a front view of the piston in driving engagement with the drill rod;
FIG. 5C is a cross-sectional view taken along line C-C of FIG. 5 b;
FIG. 6a is a schematic view of a drill rod configuration;
FIG. 6b is a side view of FIG. 6 a;
FIG. 6c is a top view of FIG. 6 a;
FIG. 6d is a bottom view of FIG. 6 a;
FIG. 7a is a schematic view of the anti-drop installation;
FIG. 7b is a front view of FIG. 7 a;
fig. 7c is a cross-sectional view taken along line D-D of fig. 7 b.
Detailed Description
The invention is further explained below with reference to the drawings.
The invention relates to a full-hydraulic rotary-impact crusher, which comprises a hydraulic system, a piston part and a drill rod part, wherein the hydraulic system drives the piston part to rotate and drives the drill rod part to rotate, the hydraulic system simultaneously drives the piston part to impact up and down, and the full-hydraulic rotary-impact crusher realizes the combined motion of continuous rotation and intermittent impact.
As shown in fig. 1 to 7c, the full hydraulic rotary-impact crusher of the present invention comprises a hydraulic motor 1, an upper cylinder 2, a through bolt assembly 3, a piston 4, a middle cylinder assembly 5, a lower cylinder assembly 6, and a drill rod 7, wherein:
the upper cylinder body 2, the middle cylinder body assembly 5 and the lower cylinder body assembly 6 are sequentially connected from top to bottom;
the hydraulic motor 1 is positioned at the top of the upper cylinder body 2, the output end of the hydraulic motor 1 is connected with the upper end of the piston 4, and the hydraulic motor 1 drives the piston 4 to rotate and impact up and down;
the upper end of the piston 4 is positioned in the upper cylinder body 2, the middle part is positioned in the middle cylinder body assembly 5, the lower end is positioned in the lower cylinder body assembly 6, and the lower end of the piston 4 is mechanically connected with a drill rod 7 and drives the drill rod 7 to rotate; the lower part of the piston 4 is provided with dynamic sawtooth lower teeth 4-1, the lower cylinder body 6-1 is internally provided with fixed static sawtooth upper teeth 6-6, and the fixed static sawtooth upper teeth 6-6 can be meshed with the dynamic sawtooth lower teeth 4-1 arranged at the lower part of the piston 4;
the upper half of the drill rod 7 is located in the lower cylinder assembly 6 and the lower half extends from below the cylinder assembly 6.
The through bolt assembly 3 connects the upper cylinder body 2, the middle cylinder body assembly 5 and the lower cylinder body assembly 6.
The hydraulic motor 1 is connected with a long-stroke spline groove 4-2 arranged at the upper end of a piston 4 through a long-stroke spline shaft 1-1 extending out of the bottom of the hydraulic motor to rotate, and the stroke length is 3-4 times of the depth of a dynamic sawtooth lower tooth 4-1 arranged at the lower part of the piston 4.
The lower end of the piston 4 is provided with a pair of obliquely symmetrical steps 4-3, the upper end of the drill rod 7 is provided with a straight boss 7-1, and the piston 4 can be quickly butted with the drill rod 7 when rotating to quickly drive the drill rod 7 to rotate.
The middle cylinder body assembly 5 comprises a middle cylinder body 5-1, a hole for the piston 4 to pass through is formed in the middle cylinder body 5-1, a rear lining 5-2 is arranged at the upper part in the hole, a reversing valve 5-3 is arranged at the upper part of the middle cylinder body 5-1, and an oil inlet and an oil outlet 5-4 are formed in the side wall of the middle cylinder body 5-1.
The lower cylinder body assembly 6 comprises a lower cylinder body 6-1, a hole for the piston 4 to pass through is formed in the lower cylinder body 6-1, an inner sleeve 6-2 is arranged at the upper part in the hole, and fixed static sawtooth upper teeth 6-6 are arranged on the hole wall below the inner sleeve 6-2; the bottom of the lower cylinder body 6-1 is provided with an outer guide sleeve 6-3, the side wall of the lower cylinder body 6-1 is provided with a drill rod pin 6-4 and an outer sleeve pin 6-5, the drill rod pin 6-4 is arranged at the position of a reducing groove in the middle of a drill rod 7 to facilitate the rotation of the drill rod and prevent the drill rod 7 from falling off, and the outer sleeve pin 6-5 is arranged at the position of the outer guide sleeve 6-3 to fix the outer guide sleeve 6-3.
The head of the drill rod 7 is in the shape of a straight line, a three-equal opening or a cross opening.
The hydraulic motor 1 drives the piston 4 to rotate, a dynamic sawtooth lower tooth 4-1 on the rotary piston 4 and a fixed static sawtooth upper tooth 6-6 in the lower cylinder 6-1 form a pair of meshing bodies, the dynamic sawtooth lower tooth 4-1 rotates along with the piston 4, the dynamic sawtooth lower tooth 4-1 moves along a contact surface with the fixed static sawtooth upper tooth 6-6, the rotary piston 4 gradually ascends upwards, after the lowest end of the dynamic sawtooth lower tooth 4-1 is contacted with the highest end of the fixed static sawtooth upper tooth 6-6, the contact tooth surface is suddenly moved out, the pressure of the upper cavity of the rotary piston is increased, the pressure of the lower cavity of the piston is reduced, the piston 4 is pressed downwards, the dynamic sawtooth lower tooth 4-1 is instantly and completely meshed with the adjacent tooth of the fixed static sawtooth upper tooth 6-6, and the rotary piston 4 moves downwards by a sawtooth depth, the rotary piston 4 strikes the rotary drill rod 7 once, then the dynamic sawtooth lower tooth 4-1 and the static sawtooth upper tooth 6-6 adjacent tooth contact surface repeat the movement, and then move out of the contact surface suddenly, the hydraulic power presses the rotary piston 4 back again, and the rotary piston 4 strikes the rotary drill rod once again.
The piston 4 has N sawtooth engaging tooth surfaces on the circle of dynamic sawtooth lower teeth 4-1 and the fixed static sawtooth upper teeth 6-6, so that the piston 4 performs N times of striking on the drill rod 7 by rotating one circle, and the piston 4 continuously rotates to realize continuous and intermittent striking on the drill rod 7 by the piston 4.
The upper cylinder body 2, the piston 4, the middle cylinder body 5, the lining and the piston ring form an upper piston cavity, the middle cylinder body assembly 5, the piston 4, the lower cylinder body assembly 6, the lining and the piston ring form a lower piston cavity, and the upper piston cavity and the lower piston cavity are connected with an oil inlet and outlet port 5-4 and a reversing valve 5-3 which are arranged in the middle cylinder body assembly 5; positively pressurizing the upper cavity of the piston, slightly pressurizing the lower cavity of the piston, and rotating the crushing machine; pressurizing the upper piston cavity twice positively, pressurizing the lower piston cavity slightly positively, impacting and rotating the crusher, and circulating the steps periodically; the oil inlet and outlet 5-4 is matched with the reversing valve 5-3, so that the pressure of the upper cavity of the piston is changed, the up-and-down periodic motion of the piston 4 is realized, and the motion frequency is consistent with the meshing frequency of the upper teeth 6-6 of the fixed static sawteeth and the lower teeth 4-1 of the dynamic sawteeth.
Therefore, the combined motion of continuous rotation of the drill rod and intermittent striking of the piston is realized, and the crushing effect and efficiency are improved.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that it is obvious to those skilled in the art that various modifications and improvements can be made without departing from the principle of the present invention, and these modifications and improvements should also be considered as the protection scope of the present invention.

Claims (10)

1. A full hydraulic rotary-impact crusher is characterized in that: the hydraulic system drives the piston component to rotate and drives the drill rod component to rotate, the hydraulic system simultaneously drives the piston component to impact up and down, and the full-hydraulic rotation-impact crusher realizes continuous rotation and intermittent impact combined motion.
2. A full hydraulic rotary-impact crusher as claimed in claim 1, wherein: the hydraulic system is hydraulic motor (1), and the piston part includes piston (4), and the drill rod part includes drill rod (7), and hydraulic motor (1), piston (4), drill rod (7) set up in upper cylinder body (2), well cylinder body assembly (5), lower cylinder body assembly (6) that top-down connected gradually, wherein:
the hydraulic motor (1) is positioned at the top of the upper cylinder body (2), the output end of the hydraulic motor (1) is connected with the upper end of the piston (4), and the hydraulic motor (1) drives the piston (4) to rotate and impact up and down;
the upper end of the piston (4) is positioned in the upper cylinder body (2), the middle part of the piston is positioned in the middle cylinder body assembly (5), the lower end of the piston is positioned in the lower cylinder body assembly (6), and the lower end of the piston (4) is mechanically connected with a drill rod (7) and drives the drill rod (7) to rotate; the lower part of the piston (4) is provided with dynamic sawtooth lower teeth (4-1), the lower cylinder body (6-1) is internally provided with fixed static sawtooth upper teeth (6-6), and the fixed static sawtooth upper teeth (6-6) can be meshed with the dynamic sawtooth lower teeth (4-1) arranged at the lower part of the piston (4);
the upper half part of the drill rod (7) is positioned in the lower cylinder assembly (6), and the lower half part of the drill rod extends out of the lower part of the cylinder assembly (6);
the upper cylinder body (2), the middle cylinder body assembly (5) and the lower cylinder body assembly (6) are connected through the through bolt assembly (3).
3. A full hydraulic rotary-impact crusher as claimed in claim 2, wherein: the hydraulic motor (1) is connected with a long-stroke spline groove (4-2) arranged at the upper end of the piston (4) to rotate through a long-stroke spline shaft (1-1) extending out of the bottom of the hydraulic motor, and the stroke length is 3-4 times of the depth of the dynamic sawtooth lower teeth (4-1) arranged at the lower part of the piston (4).
4. A full hydraulic rotary-impact crusher as claimed in claim 2, wherein: the drill rod is characterized in that a pair of obliquely symmetrical steps (4-3) is arranged at the lower end of the piston (4), a linear boss (7-1) is arranged at the upper end of the drill rod (7), and the piston (4) can be rapidly butted with the drill rod (7) when rotating to rapidly drive the drill rod (7) to rotate.
5. A full hydraulic rotary-impact crusher as claimed in claim 2, wherein: the middle cylinder body assembly (5) comprises a middle cylinder body (5-1), a hole for the piston (4) to penetrate through is formed in the middle cylinder body (5-1), a rear lining (5-2) is arranged at the upper portion in the hole, a reversing valve (5-3) is arranged at the upper portion of the middle cylinder body (5-1), and an oil inlet and outlet (5-4) is formed in the side wall of the middle cylinder body (5-1).
6. A full hydraulic rotary-impact crusher as claimed in claim 2, wherein: the lower cylinder body assembly (6) comprises a lower cylinder body (6-1), a hole for the piston (4) to pass through is formed in the lower cylinder body (6-1), an inner sleeve (6-2) is arranged at the upper part in the hole, and fixed static sawtooth upper teeth (6-6) are arranged on the wall of the hole below the inner sleeve (6-2); an outer guide sleeve (6-3) is arranged at the bottom of the lower cylinder body (6-1), a drill rod pin (6-4) and an outer sleeve pin (6-5) are arranged on the side wall of the lower cylinder body (6-1), the drill rod pin (6-4) is installed at the position of a reducing groove in the middle of a drill rod (7) to facilitate rotation of the drill rod and prevent the drill rod (7) from falling off, and the outer sleeve pin (6-5) is installed at the position of the outer guide sleeve (6-3) and used for fixing the outer guide sleeve (6-3).
7. A full hydraulic rotary-impact crusher as claimed in claim 2, wherein: the hydraulic motor (1) drives the piston (4) to rotate, a pair of meshing bodies is formed by the dynamic sawtooth lower teeth (4-1) on the rotary piston (4) and the fixed static sawtooth upper teeth (6-6) in the lower cylinder body (6-1), the dynamic sawtooth lower teeth (4-1) rotate along with the piston (4), the dynamic sawtooth lower teeth (4-1) move along the contact surface with the fixed static sawtooth upper teeth (6-6), the rotary piston (4) gradually rises to the upper part, when the lowest end of the dynamic sawtooth lower teeth (4-1) is contacted with the highest end of the fixed static sawtooth upper teeth (6-6), the contact tooth surface is suddenly shifted out, the pressure of the upper cavity of the rotary piston is increased, the pressure of the lower cavity of the piston is reduced, the piston (4) is pressed downwards, the dynamic sawtooth lower teeth (4-1) are instantaneously and completely meshed with the adjacent teeth of the fixed static sawtooth upper teeth (6-6), the rotary piston (4) moves downwards suddenly by a sawtooth depth to realize one-time striking of the rotary piston (4) to the rotary drill rod (7), then the dynamic sawtooth lower teeth (4-1) and one contact surface of the adjacent teeth of the static sawtooth upper teeth (6-6) repeat the movement, the dynamic sawtooth lower teeth and the static sawtooth upper teeth move out of the contact surface suddenly, hydraulic power presses the rotary piston (4) back, and the rotary piston (4) strikes the rotary drill rod again.
8. The full hydraulic rotary-impact crusher of claim 7, wherein: and N sawtooth meshed tooth surfaces are arranged on the circle of dynamic sawtooth lower teeth (4-1) and the fixed static sawtooth upper teeth (6-6) of the piston (4), so that the piston (4) rotates for one circle to strike the drill rod (7) for N times, and the piston (4) continuously rotates to strike the drill rod (7) continuously and intermittently.
9. A fully hydraulic rotary-impact breaker apparatus according to claim 2 wherein: the upper cylinder body (2), the piston (4), the middle cylinder body (5), the lining and the piston ring form an upper piston cavity, the middle cylinder body assembly (5), the piston (4), the lower cylinder body assembly (6), the lining and the piston ring form a lower piston cavity, and the upper piston cavity and the lower piston cavity are connected with an oil inlet and outlet (5-4) and a reversing valve (5-3) which are arranged in the middle cylinder body assembly (5); positively pressurizing the upper cavity of the piston, slightly pressurizing the lower cavity of the piston, and rotating the crushing machine; pressurizing the upper piston cavity twice positively, pressurizing the lower piston cavity slightly positively, impacting and rotating the crusher, and cycling in such a cycle; the oil inlet and outlet ports (5-4) are matched with the reversing valve (5-3) to change the pressure of the upper cavity of the piston, so that the up-and-down periodic motion of the piston (4) is realized, and the motion frequency of the piston is consistent with the meshing frequency of the fixed static sawtooth upper teeth (6-6) and the dynamic sawtooth lower teeth (4-1).
10. A full hydraulic rotary-impact crusher as claimed in claim 2, wherein: the head of the drill rod (7) is in the shape of a straight line, a three-equal opening or a cross opening.
CN202210347988.3A 2022-04-01 2022-04-01 Full hydraulic rotary impact crusher Active CN114934558B (en)

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CN114934558B CN114934558B (en) 2023-06-09

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CN204627412U (en) * 2015-02-10 2015-09-09 中国石油大学(华东) The lenticular vibratory impulse drilling tool of screw drive
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