CN201250607Y - Structure capable of idle drilling and preventing idle striking for hydraulic rock drill - Google Patents
Structure capable of idle drilling and preventing idle striking for hydraulic rock drill Download PDFInfo
- Publication number
- CN201250607Y CN201250607Y CNU2008203019480U CN200820301948U CN201250607Y CN 201250607 Y CN201250607 Y CN 201250607Y CN U2008203019480 U CNU2008203019480 U CN U2008203019480U CN 200820301948 U CN200820301948 U CN 200820301948U CN 201250607 Y CN201250607 Y CN 201250607Y
- Authority
- CN
- China
- Prior art keywords
- handpiece body
- guide pin
- pin bushing
- bit shank
- spring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Percussive Tools And Related Accessories (AREA)
Abstract
The utility model discloses a structure capable of idle drilling and preventing idle striking for hydraulic rock drill; the structure comprises a handpiece body which is internally provided with a guide sleeve and a drill shank cushion block; the position of a step shaft end surface at the front end of the guide sleeve is limited by a rabbet end surface at the end of the handpiece body; the position of the drill shank cushion block is limited by a retaining block which is arranged in the handpiece body; the drill shank is arranged in the internal hole coaxial to the drill shank cushion block by clearance fit; the structure is characterized in that a circular buffer is arranged between the end surface of the step shaft of the guide sleeve and the rabbet end surface of the handpiece body; the internal hole of the circular buffer is sheathed with the step shaft of the guide sleeve; the external round of the circular buffer is sheathed with the internal hole of the handpiece body; and the spring can be a compression spring or nylon spring or rubber spring. The structure has simple structure and effectively relieves the impact of the guide sleeve on the handpiece body.
Description
(1) technical field:
The utility model relates to a kind of internal construction of hydraulic gate, and specifically the structure that fans the air can empty be beaten and prevent to hydraulic gate.
(2) background technology:
Hydraulic gate (YYG series) is widely used in every field such as mine excavation, tunnel piercing and construction work, also can be used as blast furnace stokehold tapping outlet equipment.Hydraulic gate (YYG series) is mainly by impacting and turning round the two large divisions and form, the beater mechanism ante-chamber is pressed oil usually, the advancing of commutation control back cavity by one pair of sleeve valve, the reciprocal ballistic motion that oil return realizes piston impact bit shank, and rotating mechanism is then realized the gyration of bit shank by a high pulling torque slow-speed of revolution cycloid hydraulic motor.Described bit shank then is installed in the handpiece body interior guide pin bushing and bit shank cushion block centre bore.
Hydraulic gate has two basic conceptions:
1, " empty beat ": hammer drill does not have at the bit shank front end under the situation of any supporting body and carries out percussion action.
2, " fan the air ": hammer drill when work, after the bit shank preshoot because of stressed jam normally return cause piston can not impact the afterbody of bit shank in the normal position.
" empty beating " can make the bit shank stroke excess of stroke and cause guide pin bushing and handpiece body generation hard collision, thereby causes the major injury of handpiece body.
" fanning the air " to make normally return of the stressed jam of bit shank, cause piston because of bump less than the bit shank afterbody, the piston stroke excess of stroke takes place and cause damage with cylinder sleeve generation hard collision.
(3) utility model content:
At the problem that " empty beating " and " fanning the air " caused, the utility model provides a kind of and when " empty beating " handpiece body has been protected, and prevents the handpiece body major injury; When work, prevent normally return of the stressed jam of bit shank, avoid piston to cause the hydraulic gate of damage can empty beat and prevent the structure that fans the air less than the bit shank afterbody generation piston stroke excess of stroke and cylinder sleeve generation hard collision because of bump.
Can realize that the hydraulic gate of above-mentioned purpose can empty beat and prevent the structure that fans the air; comprise handpiece body; be provided with guide pin bushing in the handpiece body and be adjacent to the bit shank cushion block that contacts with guide pin bushing; the step axial end of guide pin bushing front end is spacing by the seam end face of handpiece body end; the bit shank cushion block is spacing by the block in the handpiece body; the bit shank matched in clearance is in the endoporus of guide pin bushing and bit shank cushion block concentric; different is: be provided with the loop buffer body between guide pin bushing step axial end and the handpiece body seam end face; when hammer drill " empty beat "; set loop buffer body has avoided guide pin bushing to contact with the direct of handpiece body, and handpiece body is played a protective role.When after the bit shank preshoot during because of stressed jam, the reaction force of set loop buffer body can play reset response to bit shank, avoids piston not impact the afterbody of bit shank in the normal position and " fanning the air " phenomenon takes place.
The endoporus of described loop buffer body and guide pin bushing step axle sleeve close, and the cylindrical of loop buffer body and handpiece body endoporus fit, promptly described loop buffer body tamp in the space between guide pin bushing step axial end and handpiece body seam end face fully.
Described loop buffer body generally uses spring.
Described spring compression commonly used spring or nylon spring or rubber spring.
The preferred aviation rubber spring of rubber spring, its elasticity is moderate and shock-resistant, has the characteristic that meets hammer drill work high-frequency percussion campaign.
Advantage of the present utility model:
1, the loop buffer body is set between guide pin bushing and the handpiece body, when after the bit shank preshoot during because of stressed jam, the reaction force of set loop buffer body can play reset response to bit shank, avoids piston not impact the afterbody of bit shank in the normal position and " fanning the air " phenomenon takes place.
2, can " empty beating " function when machine is debugged, have necessity, and when changing drilling tool, help from drill sleeve, disassembling, and can not cause the handpiece body damage that causes because of the parts hard collision stinging tight drilling tool.
(4) description of drawings:
Fig. 1 is the structural representation of a kind of embodiment of the utility model.
Figure number sign: 1, handpiece body; 2, guide pin bushing; 3, bit shank cushion block; 4, block; 5, bit shank; 6, loop buffer body.
(5) specific embodiment:
As shown in Figure 1, the utility model hydraulic gate can empty beat and the structure of preventing fanning the air in, comprise handpiece body 1, guide pin bushing 2, bit shank cushion block 3, block 4, bit shank 5 and loop buffer body 6, handpiece body 1 is the hollow circle, its front end face is offered seam, guide pin bushing 2 and bit shank cushion block 3 are for being set in handpiece body 1 endoporus, the front end step axle of guide pin bushing 2 is engaged in the handpiece body 1 front end seam, form an annular space between the step axial end of guide pin bushing 2 and the seam end face of handpiece body 1, loop buffer body 6 is arranged in this annular space, the endoporus and the guide pin bushing 2 step axle sleeves that are loop buffer body 6 close, the cylindrical of loop buffer body 6 and handpiece body 1 endoporus fit, the both ends of the surface of loop buffer body 6 respectively with the step axial plane of guide pin bushing 2, the seam end face contact of handpiece body 1.
As shown in Figure 1, bit shank cushion block 3 is set in the handpiece body 1, and its front end is close to the rear end of guide pin bushing 2, and the rear end of bit shank cushion block 3 is by block 4 restriction sites in the handpiece body 1.Guide pin bushing 2 and bit shank cushion block 3 have the endoporus of concentric, and bit shank 5 matched in clearance are in the endoporus of guide pin bushing 2 and bit shank cushion block 3, and guide pin bushing 2 endoporus places also are provided with the twice O-ring seal.
As shown in Figure 1, the step axle of bit shank 5 rear ends is greater than the endoporus of bit shank cushion block 3, when bit shank 5 " empty beat ", the step axle bump bit shank cushion block 3 of bit shank 5, bit shank cushion block 3 passes to guide pin bushing 2 with impact, owing to the existence of loop buffer body 6 is arranged between guide pin bushing 2 and the handpiece body 1, has slowed down of the impact of guide pin bushing 2 impacts to handpiece body 1.
Described loop buffer body 6 preferred aviation rubber springs.
Claims (5)
- The structure that fans the air can empty be beaten and prevent to [claim 1] hydraulic gate, comprise handpiece body (1), be provided with guide pin bushing (2) and the bit shank cushion block (3) that contacts with guide pin bushing (2) in the handpiece body (1), the step axial end of guide pin bushing (2) front end is spacing by the seam end face of handpiece body (1) end, bit shank cushion block (3) is spacing by the block (4) in the handpiece body (1), bit shank (5) matched in clearance is characterized in that: be provided with loop buffer body (6) between the seam end face of the step axial end of guide pin bushing (2) and handpiece body (1) in the endoporus of guide pin bushing (2) and bit shank cushion block (3) concentric.
- [claim 2] hydraulic gate according to claim 1 can empty be beaten and prevent it is characterized in that the structure that fans the air: the step axle sleeve of the endoporus of loop buffer body (6) and guide pin bushing (2) closes, the endoporus fit of the cylindrical of loop buffer body (6) and handpiece body (1).
- [claim 3] hydraulic gate according to claim 1 and 2 can empty be beaten and prevent it is characterized in that the structure that fans the air: described loop buffer body (6) is a spring.
- [claim 4] hydraulic gate according to claim 3 can empty be beaten and prevent it is characterized in that the structure that fans the air: described spring is for the compression spring or be the nylon spring or be rubber spring.
- [claim 5] hydraulic gate according to claim 4 can empty be beaten and prevent it is characterized in that the structure that fans the air: described rubber spring is the aviation rubber spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008203019480U CN201250607Y (en) | 2008-08-28 | 2008-08-28 | Structure capable of idle drilling and preventing idle striking for hydraulic rock drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008203019480U CN201250607Y (en) | 2008-08-28 | 2008-08-28 | Structure capable of idle drilling and preventing idle striking for hydraulic rock drill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201250607Y true CN201250607Y (en) | 2009-06-03 |
Family
ID=40746281
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008203019480U Expired - Fee Related CN201250607Y (en) | 2008-08-28 | 2008-08-28 | Structure capable of idle drilling and preventing idle striking for hydraulic rock drill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201250607Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111236833A (en) * | 2019-12-31 | 2020-06-05 | 山东天瑞重工有限公司 | Hydraulic rock drill air-blast proof buffering system |
-
2008
- 2008-08-28 CN CNU2008203019480U patent/CN201250607Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111236833A (en) * | 2019-12-31 | 2020-06-05 | 山东天瑞重工有限公司 | Hydraulic rock drill air-blast proof buffering system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090603 Termination date: 20130828 |