CN215371995U - Lubricating mechanism of pneumatic rock drill - Google Patents
Lubricating mechanism of pneumatic rock drill Download PDFInfo
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- CN215371995U CN215371995U CN202121834491.1U CN202121834491U CN215371995U CN 215371995 U CN215371995 U CN 215371995U CN 202121834491 U CN202121834491 U CN 202121834491U CN 215371995 U CN215371995 U CN 215371995U
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- machine head
- sleeve body
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Abstract
The technical scheme of the utility model is realized as follows: a lubrication mechanism of a pneumatic rock drill comprises a handle body, wherein a handle body pore channel is arranged on the handle body; the operating valve is sleeved in the handle body and provided with a strong blowing hole; the cylinder body, the guide sleeve body and the machine head; the operating valve is provided with a groove communicated with the handle body pore passage; compressed gas containing oil enters the handpiece through a groove of the operating valve, a handle body pore channel, a cylinder body pore channel, a guide sleeve body pore channel and a handpiece pore channel in sequence; the method is characterized in that: a rotating sleeve body is arranged in the machine head, and an oil film gap is arranged between the rotating sleeve body and the machine head; an oil guide mechanism is arranged in the gap between the oil films on the rotating sleeve body and the machine head; the oil guide mechanism comprises a plurality of oil guide units which are uniformly arranged in an oil film gap; the utility model has the beneficial effects that: the oil film is uniformly distributed and the service life is long.
Description
Technical Field
The utility model relates to the technical field of rock drills, in particular to a lubricating mechanism of a pneumatic rock drill.
Background
The pneumatic rock drill is an impact type drilling machine taking compressed air as power; when the rock drill works, air pressure alternately changes and enters a rear cavity and a front cavity of the air cylinder to push the piston to move back and forth; the compressed air also acts on a rear cover or a front cover of the cylinder to enable the rock drill to retreat or advance, so that the rock drill generates vibration to generate a drilling force; when the pneumatic rock drill works, relative motion exists between the machine head and the rotating sleeve and between the piston and the rotating nut, the pneumatic rock drill is easy to wear, the reverse flow in the normal working process of the pneumatic rock drill and when the working is finished can damage a lubricating system of the pneumatic rock drill, the wear is accelerated, the service life of parts is shortened, the torque force of the pneumatic rock drill can be reduced, and the rock drilling speed is reduced. In order to realize the functions of lubrication, cooling and backflow prevention of the pneumatic rock drilling machine in the rock drilling process, the rock drilling machine is provided with a lubrication and cooling mechanism.
For example, patent publication No. CN204677107U discloses a lubricating and cooling mechanism for a pneumatic rock drill, which improves the lubricating and cooling effects of the pneumatic rock drill and prevents the back flow during and after the normal working process of the pneumatic rock drill; however, when the device is used specifically, the compressed air containing the lubricating oil drives the lubricating oil to enter the rock drill to form an oil film in a gap between the machine head and the rotating sleeve, so that the lubricating and cooling functions are realized.
SUMMERY OF THE UTILITY MODEL
In view of the deficiencies of the prior art, it is an object of the present invention to provide a lubrication mechanism for a pneumatic rock drill, which solves the above-mentioned problems of the prior art.
The technical scheme of the utility model is realized as follows: a lubrication mechanism of a pneumatic rock drill comprises a handle body, wherein a handle body pore channel is arranged on the handle body; the operating valve is sleeved in the handle body and provided with a strong blowing hole; the cylinder body, the guide sleeve body and the machine head; the operating valve is provided with a groove communicated with the handle body pore passage; compressed gas containing oil enters the handpiece through a groove of the operating valve, a handle body pore channel, a cylinder body pore channel, a guide sleeve body pore channel and a handpiece pore channel in sequence; the method is characterized in that: a rotating sleeve body is arranged in the machine head, and an oil film gap is arranged between the rotating sleeve body and the machine head; an oil guide mechanism is arranged in the gap between the oil films on the rotating sleeve body and the machine head; the oil guide mechanism comprises a plurality of oil guide units which are uniformly arranged in an oil film gap, and each oil guide unit comprises an oil guide block which is provided with a windward end and a leeward end; the windward groove is arranged in a V shape, is arranged at the air inducing end of the oil guide block and is provided with two air inducing surfaces; the oil distribution groove is arranged at the bottom end of the windward groove and is of a semicircular structure; the drainage grooves are arranged on the oil guide block and are uniformly distributed along the circumferential direction of the oil distribution groove; the height of the oil guide block is reduced from the initiation end to the leeward end in sequence.
Preferably: the groove is a U-shaped groove.
Preferably: the groove is arranged at the center of the strong blowing hole, the width of the groove is 2.5mm, and the depth of the groove is 0.7 mm.
Preferably: a rotating nut is also arranged in the rotating sleeve body; and, a piston; an oil film gap is formed between the rotating nut and the piston, an air hole is formed in the rotating sleeve body, and the air hole is communicated with the oil film gap between the rotating sleeve body and the machine head and the oil film gap between the rotating nut and the piston.
Preferably: the oil guide unit also comprises a spiral groove which is arranged on the inner wall of the machine head and is positioned in the oil film gap; the spiral grooves drive the compressed gas to be conveyed in a spiral mode.
The utility model has the beneficial effects that: when compressed air with oil enters an oil film gap, the compressed air is in contact with the windward grooves of the oil guide blocks, compressed gas is blown to the windward grooves to be in contact with the two windward surfaces of the windward grooves, the oil in the compressed air is in contact with the windward surfaces and adsorbed in the windward grooves, the oil on the windward surfaces is blown to the oil distribution grooves by the thrust of the compressed air, the oil in the oil distribution grooves uniformly flows to the drainage grooves, the oil is uniformly distributed in the oil film gap, and uneven oil film distribution is avoided; meanwhile, the compressed air at the inlet is shielded to a certain degree by the arrangement that the height of the oil guide block is reduced from the initiation end to the leeward end, the phenomenon that the oil films distributed up and down are seriously uneven due to the fact that the oil films formed at the oil film gap inlet are blown downwards by the impulsive force of the compressed air is avoided, the working stability of the rock drill is improved, and the service life is prolonged.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a cross-sectional view of the center line of the pneumatic rock drill and the center line of the head;
FIG. 3 is a schematic diagram of the distribution of oil guide units in an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of an oil guide block according to an embodiment of the present invention;
the examples in the figure are: the automatic control device comprises an operating valve 1, a handle 2, a cylinder 3, a guide sleeve 4, a nose 5, a rotary sleeve 6, a rotary nut 7, a piston 8, an oil film gap 9, a pressure cavity 10, a forced blowing hole 11, a groove 12, an oil guide block 13, a windward groove 14, an oil distribution groove 15, a drainage groove 16, a handle hole channel 21, a cylinder hole channel 31, a guide sleeve hole 41, a nose hole channel 51 and an air hole 61.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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.
Example 1
As shown in fig. 1 to 4, the utility model discloses a lubricating mechanism of a pneumatic rock drill, which comprises a handle body 2, wherein a handle body pore canal is arranged on the handle body; the operating valve 1 is sleeved in the handle body 2, and a strong blowing hole 11 is formed in the operating valve 1; the cylinder body 3, the guide sleeve body 4 and the machine head 5; the operating valve 1 is provided with a groove 12 communicated with a handle body pore passage, and the groove 12 is a U-shaped groove; the groove is arranged at the center of the strong blowing hole, the width of the groove is 2.5mm, and the depth of the groove is 0.7 mm; compressed gas containing oil enters the machine head through the groove 12 of the operating valve 1, the handle body pore canal 21, the cylinder body pore canal 31, the guide sleeve body pore canal 41 and the machine head pore canal 51 in sequence; in the specific embodiment of the utility model, a rotating sleeve body 6 is arranged in the machine head, and an oil film gap 9 is arranged between the rotating sleeve body 6 and the machine head 5; a pressure chamber 10 is also provided in the handpiece.
In this embodiment, a rotating nut 7 is further disposed in the rotating sleeve; and, a piston 8; an oil film gap 9 is formed between the rotating nut 7 and the piston 8, an air hole 61 is formed in the rotating sleeve body, and the air hole 61 is communicated with the oil film gap between the rotating sleeve body and the machine head and the oil film gap between the rotating nut and the piston.
The lubricating and cooling working principle is as follows: compressed air containing lubricating oil enters a front end machine head of the pneumatic rock drill through a groove of the control valve along a handle body pore passage, a cylinder body pore passage, a guide sleeve body pore passage and a machine head pore passage, passes through an oil film gap between the machine head and the rotating sleeve to form an oil film to realize the lubricating and cooling functions, then enters the rotating sleeve body through an air hole, passes through an oil film gap between the rotating nut and the piston to form the oil film to realize the lubricating and cooling functions, meanwhile, the compressed air forms a pressure cavity in the machine head, and the pressure in the pressure cavity is always higher than the water pressure, so that water is prevented from flowing backwards into the pneumatic rock drill from a center hole of the drill rod.
In this embodiment, oil guiding mechanisms are arranged in oil film gaps between the rotating sleeve body and the machine head as well as between the rotating nut and the piston; the oil guide mechanism comprises a plurality of oil guide units which are uniformly arranged in an oil film gap, and each oil guide unit comprises an oil guide block 13 which is provided with a windward end and a leeward end; the windward groove 14 is arranged in a V shape, is arranged at the air inducing end of the oil guide block 13 and is provided with two air inducing surfaces; the oil distribution groove 15 is arranged at the bottom end of the windward groove and is of a semicircular structure; the drainage grooves 16 are arranged on the oil guide block 13 and are uniformly distributed along the circumferential direction of the oil distribution groove; the height of the oil guide block is reduced from the initiation end to the leeward end in sequence.
According to the technical scheme, when compressed air with oil enters an oil film gap, the compressed air is in contact with the windward groove of the oil guide block, compressed gas is blown to the windward groove and is in contact with the two windward surfaces of the windward groove, the oil in the compressed air is in contact with the windward surfaces and is adsorbed in the windward groove, the oil on the windward surfaces is blown to the oil distribution groove by the thrust of the compressed air, the oil in the oil distribution groove uniformly flows to the drainage grooves, the oil is uniformly distributed in the oil film gap, and uneven oil film distribution is avoided; meanwhile, the compressed air at the inlet is shielded to a certain degree by the arrangement that the height of the oil guide block is reduced from the initiation end to the leeward end, the phenomenon that the oil films distributed up and down are seriously uneven due to the fact that the oil films formed at the oil film gap inlet are blown downwards by the impulsive force of the compressed air is avoided, the working stability of the rock drill is improved, and the service life is prolonged.
Example 2
The present embodiment differs from the above embodiments in that: in this embodiment, the oil guiding unit further includes a spiral groove disposed on an inner wall of the machine head and located in the oil film gap; the spiral grooves drive the compressed gas to be conveyed in a spiral mode.
Through the technical scheme, through the arrangement of the spiral grooves, the compressed gas is conveyed in a spiral state when entering the oil film gap, and oil in the compressed gas is uniformly mixed, so that the uniformity of the oil film is guaranteed.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (5)
1. A lubrication mechanism of a pneumatic rock drill includes
The handle body is provided with a handle body pore passage;
the operating valve is sleeved in the handle body and provided with a strong blowing hole; and the number of the first and second groups,
the cylinder body, the guide sleeve body and the machine head; the operating valve is provided with a groove communicated with the handle body pore passage;
compressed gas containing oil enters the handpiece through a groove of the operating valve, a handle body pore channel, a cylinder body pore channel, a guide sleeve body pore channel and a handpiece pore channel in sequence;
the method is characterized in that: is arranged in the machine head
An oil film gap is arranged between the rotating sleeve body and the machine head;
the rotating sleeve body and the machine head are arranged in the oil film gap
An oil guide mechanism;
lead oily mechanism and include that a plurality of evenly sets up the oil guide unit in the oil film clearance, lead oily unit and include
The oil guide block is provided with a windward end and a leeward end;
the windward groove is arranged in a V shape, is arranged at the air inducing end of the oil guide block and is provided with two air inducing surfaces;
the oil distribution groove is arranged at the bottom end of the windward groove and is of a semicircular structure;
the drainage grooves are arranged on the oil guide block and are uniformly distributed along the circumferential direction of the oil distribution groove;
the height of the oil guide block is reduced from the initiation end to the leeward end in sequence.
2. A lubrication mechanism for a pneumatic rock drill according to claim 1, characterized in that: the groove is a U-shaped groove.
3. A lubrication mechanism for a pneumatic rock drill according to claim 1, characterized in that: the groove is arranged at the center of the strong blowing hole, the width of the groove is 2.5mm, and the depth of the groove is 0.7 mm.
4. A lubrication mechanism for a pneumatic rock drill according to claim 1, characterized in that: the rotating sleeve body is also internally provided with
Rotating the nut; and the number of the first and second groups,
a piston;
an oil film gap is formed between the rotating nut and the piston, an air hole is formed in the rotating sleeve body, and the air hole is communicated with the oil film gap between the rotating sleeve body and the machine head and the oil film gap between the rotating nut and the piston.
5. A lubrication mechanism for a pneumatic rock drill according to claim 1, characterized in that: the oil guide unit further comprises
The spiral groove is arranged on the inner wall of the machine head and is positioned in the oil film gap;
the spiral grooves drive the compressed gas to be conveyed in a spiral mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121834491.1U CN215371995U (en) | 2021-08-07 | 2021-08-07 | Lubricating mechanism of pneumatic rock drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121834491.1U CN215371995U (en) | 2021-08-07 | 2021-08-07 | Lubricating mechanism of pneumatic rock drill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215371995U true CN215371995U (en) | 2021-12-31 |
Family
ID=79616300
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121834491.1U Active CN215371995U (en) | 2021-08-07 | 2021-08-07 | Lubricating mechanism of pneumatic rock drill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215371995U (en) |
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2021
- 2021-08-07 CN CN202121834491.1U patent/CN215371995U/en active Active
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