CN212318413U - Control device for air-hammer-preventing breaking hammer - Google Patents
Control device for air-hammer-preventing breaking hammer Download PDFInfo
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- CN212318413U CN212318413U CN202020725266.3U CN202020725266U CN212318413U CN 212318413 U CN212318413 U CN 212318413U CN 202020725266 U CN202020725266 U CN 202020725266U CN 212318413 U CN212318413 U CN 212318413U
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Abstract
The utility model relates to a prevent that sky beats controlling means for quartering hammer, including cylinder body, piston and switching-over valve, the piston is located inside the cylinder body, its characterized in that, from the top down is equipped with draining groove, high-low pressure switching oil groove, prevents that sky beats oil groove and high-pressure oil groove on the cylinder body in proper order, still be equipped with the oil feed passageway on the cylinder body, high-pressure oil groove with the oil feed passageway intercommunication, the switching-over valve is equipped with normal high pressure chamber, normal high pressure chamber and oil feed passageway intercommunication, prevents that sky beats oil groove and normal high pressure chamber intercommunication; when the high-low pressure conversion oil groove is communicated with the idle-pumping prevention oil groove, the reversing valve can enable the normal-high pressure cavity to be communicated with the oil drainage groove; the anti-idle-driving mechanism has the anti-idle-driving function, does not need an operator to operate independently, can improve the operation efficiency, and can reduce the damage to the drill rod pin, the front shell and the through bolt; the idle-driving prevention function is realized when the idle-driving prevention oil groove, the high-low pressure conversion cavity, the cylinder upper cavity and the oil drainage groove are communicated, and oil drainage is arranged on the upper part of the cylinder inner cavity.
Description
Technical Field
The utility model relates to a controlling means, in particular to prevent that air beating is controlling means for quartering hammer.
Background
The hydraulic breaking hammer is a common engineering machine, and its basic principle is that it uses hydraulic energy to make piston implement reciprocating motion in cylinder sleeve so as to repeatedly hammer drill rod, and the drill rod can implement breaking function to crush cement building and road surface, etc.. When the drill rod cannot hit the object to be broken, the drill rod can impact on the drill rod pin to rebound, and can impact on the piston which rebounds. If the breaking hammer stops in time, damage to the breaking hammer and safety accidents are easily caused. The idle driving phenomenon can be stopped only by an excavator operator, and has certain hysteresis.
SUMMERY OF THE UTILITY MODEL
The utility model discloses to the not enough of above-mentioned prior art existence, provide a prevent that air blast is controlling means for the quartering hammer, can improve the life of quartering hammer.
The utility model provides an above-mentioned technical problem's technical scheme as follows: a control device for an idle-run-proof breaking hammer comprises a cylinder body, a piston and a reversing valve, wherein the piston is arranged inside the cylinder body;
when the high-low pressure conversion oil groove is communicated with the air-defense oil pumping groove, the reversing valve can enable the normal-high pressure cavity to be communicated with the oil drainage groove. Further, the controller is arranged on a connecting pipeline between the normal-pressure cavity and the anti-idle oil pumping groove and can be used for opening or closing the connecting pipeline.
Further, the reversing valve is arranged on the front end face of the cylinder body.
Further, the reversing valve comprises a valve body, a valve sleeve and a valve core, the valve body is fixedly installed on the front end face of the cylinder body, a valve cavity is formed in the valve body, the valve sleeve is arranged in the valve cavity, the valve core is arranged in the valve sleeve, and the valve sleeve can move along the valve core.
Further, the valve cavity comprises a high-low pressure conversion cavity, a normal high pressure cavity and an oil outlet cavity, an annular groove is formed in the valve sleeve, and when the valve sleeve is positioned at the lower end, the high-low pressure conversion cavity is communicated with the annular groove; when the valve sleeve is positioned at the upper end, the normal-high pressure cavity is communicated with the inner hole of the valve core through the through hole A on the valve sleeve and the through hole B on the valve core, and the through hole C on the valve core is communicated with the oil outlet cavity.
Further, the piston sequentially comprises a section A, a section B, a section C, a section D and a section E from top to bottom, the diameter of the section A is the smallest, the diameters of the section B and the section D are the largest, a cylinder upper cavity is formed between the section A and the wall of the cylinder inner hole, and a cylinder lower cavity is formed between the section E and the wall of the cylinder inner hole; when high-pressure oil is in the upper cavity of the cylinder body, the piston can be driven to move downwards; when the upper cavity of the cylinder body is filled with low-pressure oil, the lower cavity of the cylinder body is filled with high-pressure oil, and the piston can be driven to move upwards.
Furthermore, an oil drainage channel is arranged on the upper part of the piston or the upper part of the inner cavity of the cylinder body.
Further, the oil drainage channel comprises a groove and an annular groove which are axially arranged, and the groove and the annular groove are arranged on the outer wall of the piston or the inner wall of the cylinder body; two ends of the groove are respectively communicated with the upper cavity of the cylinder body and the annular groove; when the high-low pressure conversion oil groove is communicated with the idle-driving prevention oil groove, high-pressure oil in the upper cavity of the cylinder body can enter the oil drainage groove through the oil drainage channel to drain oil, and the breaking hammer stops working.
The utility model has the advantages that: the anti-idle-driving mechanism has the anti-idle-driving function, does not need an operator to operate independently, can improve the operation efficiency, and can reduce the damage to the drill rod pin, the front shell and the through bolt; the idle-driving prevention function is realized when the idle-driving prevention oil groove, the high-low pressure conversion cavity, the cylinder upper cavity and the oil drainage groove are communicated, and oil drainage is arranged on the upper part of the cylinder inner cavity.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view showing the state that the drill rod drives the piston to move upward when striking a broken object;
fig. 3 is a schematic view of the piston of the present invention in a state of reaching the upper limit;
FIG. 4 is a schematic structural view of a direction valve according to the present invention;
fig. 5 is an installation diagram of the controller of the present invention;
Detailed Description
The principles and features of the present invention are described below in conjunction with the following drawings, the examples given are only intended to illustrate the present invention and are not intended to limit the scope of the present invention.
The dotted lines in the figure are some oil passages in the cylinder body, are only used for representing the communication relationship, and do not represent the structure of the actual oil passages.
As shown in fig. 1-5, a control device for an idle-run-proof breaking hammer comprises a cylinder body 2, a piston 1 and a reversing valve 3, wherein an oil drainage groove 2-2, a high-low pressure conversion oil groove 2-3, an idle-run-proof oil groove 2-4 and a high-pressure oil groove 2-5 are sequentially arranged on the cylinder body 1 from top to bottom, an oil inlet channel 2-7 is further arranged on the cylinder body 2, the high-pressure oil groove 2-5 is communicated with the oil inlet channel 2-7, a normal-high pressure cavity 3-11 is arranged on the reversing valve 3, the normal-high pressure cavity 3-11 is communicated with the oil inlet channel 2-7, and the idle-run-proof oil groove 2-4 is communicated with the normal-high pressure cavity 3-11;
when the high-low pressure conversion oil groove 2-3 is communicated with the idle-driving prevention oil groove 2-4, the reversing valve 3 can enable the normal-high pressure cavity 3-11 to be communicated with the oil drainage groove 2-2.
The anti-aircraft oil pumping device is characterized by further comprising a controller 4, wherein the controller 4 is arranged on a connecting pipeline between the normal-pressure and high-pressure cavities 3-11 and the anti-aircraft oil pumping groove 2-4, the connecting pipeline can be opened or closed, and the connecting pipeline comprises a first oil passage 3-14 connected with the anti-aircraft oil pumping groove and a second oil passage 3-13 connected with the normal-pressure and high-pressure cavities 3-11.
The reversing valve 3 is arranged on the front end face of the cylinder body 2.
The reversing valve 3 comprises a valve body 3-1, a valve sleeve 3-2 and a valve core 3-3, wherein the valve body 3-1 is fixedly arranged on the front end face of the cylinder body 2, the valve cavity is arranged on the valve body 3-1, the valve sleeve 3-2 is arranged in the valve cavity, the valve core 3-3 is arranged in the valve sleeve 3-2, and the valve sleeve 3-2 can move along the valve core 3-3.
The valve cavity comprises a high-pressure and low-pressure conversion cavity 3-12, a normal-pressure and high-pressure cavity 3-11 and an oil outlet cavity 3-13, an annular groove 3-22 is formed in the valve sleeve 3-2, and when the valve sleeve 3-2 is located at the lower end, the high-pressure and low-pressure conversion cavity 3-12 is communicated with the annular groove 3-22; when the valve sleeve 3-2 is positioned at the upper end, the normal-pressure cavity 3-11 is communicated with the inner hole of the valve core through a through hole A3-21 on the valve sleeve 3-2 and a through hole B3-31 on the valve core 3-3, and a through hole C3-32 on the valve core is communicated with the oil outlet cavity 3-13.
The piston 1 sequentially comprises an A section 1-1, a B section 1-2, a C section 1-3, a D section 1-4 and an E section 1-5 from top to bottom, the diameter of the A section 1-1 is the smallest, the diameters of the B section 1-2 and the D section 1-4 are the largest, a cylinder body upper cavity 2-1 is formed between the A section 1-1 and the wall of an inner hole of the cylinder body 2, and a cylinder body lower cavity 2-6 is formed between the E section 1-5 and the wall of the inner hole of the cylinder body 2; when high-pressure oil is filled in the upper cavity 2-1 of the cylinder body, the piston 1 can be driven to move downwards; when low-pressure oil is filled in the upper cavity 2-1 of the cylinder body, high-pressure oil is filled in the lower cavity 2-6 of the cylinder body, and the piston 1 can be driven to move upwards.
An oil drainage channel is arranged at the upper part of the piston, the oil drainage channel comprises a groove 1-6 arranged along the axial direction of the piston and an annular groove 1-7 arranged on the piston 4, and two ends of the groove 1-6 are respectively communicated with the upper cavity 2-1 of the cylinder body and the annular groove 1-7; when the high-low pressure conversion oil groove 2-3 is communicated with the idle-driving prevention oil groove 2-4, high-pressure oil in the upper cavity 2-1 of the cylinder body can enter the oil drainage groove through the oil drainage channel to realize oil drainage, and the breaking hammer stops working. As shown in fig. 1, the oil drain passage is omitted from the pistons of fig. 2 and 3.
When the drill rod is idle driven, the drill rod 5 returns to the upper limit position, the piston 1 continues to move downwards due to inertia to reach the lower limit position of the piston 1, at the moment, the section D1-4 seals the high-pressure oil groove, the high-low pressure conversion oil groove 2-3 is communicated with the idle driving prevention oil groove 2-4, as shown in figure 1, high-pressure oil is filled in the high-low pressure conversion oil groove 2-3, high-pressure oil is filled in the high-low pressure conversion cavity 3-12 of the reversing valve 3, the valve sleeve 3-2 is driven to move upwards, the hole A3-21, the hole B3-31, the valve core inner hole and the hole C3-32 are communicated, the high-pressure oil sequentially enters the upper cavity 2-1 of the cylinder body and enters the oil drainage groove 2-2 through the oil drainage channel to drain oil, and the breaking hammer stops working.
When the drill rod strikes a broken object, the piston is jacked up through the drill rod, as shown in figure 2, the section E1-5 corresponds to the high-pressure oil groove 2-5, so that the lower cavity 2-6 of the cylinder body is filled with high-pressure oil, the high-low pressure conversion oil groove 2-3 is communicated with the oil drainage groove 2-2 at the moment, the high-low pressure conversion oil groove 2-3 is filled with low pressure, the high-low pressure conversion cavity 3-12 of the reversing valve 3 is filled with low pressure, the valve sleeve 3-2 moves downwards under the action of the normal-high pressure cavity 3-11, and high-pressure oil cannot enter the upper cavity 2-1 of the cylinder body; at the moment, the piston 1 continues to move upwards to the upper limit position, as shown in fig. 3, at the moment, the high-low pressure conversion oil groove 2-3 is communicated with the high-pressure oil groove 2-5, the valve sleeve 3-2 of the reversing valve moves upwards again, high-pressure oil flows to the upper cavity 2-1 of the cylinder body through the hole A3-21, the hole B3-31, the inner hole of the valve core and the hole C3-32, the piston 1 moves downwards to drive the drill rod 5 to move downwards, and normal striking work of the breaking hammer is achieved.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (8)
1. A control device for an air-beating-preventing breaking hammer is characterized by comprising a cylinder body, a piston and a reversing valve, wherein an oil drainage groove, a high-low pressure conversion oil groove, an air-beating-preventing oil groove and a high-pressure oil groove are sequentially arranged on the cylinder body from top to bottom;
when the high-low pressure conversion oil groove is communicated with the air-defense oil pumping groove, the reversing valve can enable the normal-high pressure cavity to be communicated with the oil drainage groove.
2. The apparatus as claimed in claim 1, further comprising a controller, wherein the controller is disposed on the connection line between the atmospheric pressure chamber and the idle reduction prevention groove, and opens or closes the connection line.
3. The control device for the blank hammer preventing hammer according to claim 1, wherein the direction change valve is provided on a front end surface of the cylinder block.
4. The apparatus as claimed in claim 3, wherein the reversing valve comprises a valve body, a valve housing and a valve core, the valve body is fixedly mounted on the front end surface of the cylinder, the valve housing is provided with a valve cavity, the valve housing is provided in the valve cavity, the valve core is provided in the valve housing, and the valve housing is movable along the valve core.
5. The control device for the blank hammer preventing hammer crusher as claimed in claim 4, wherein the valve chamber includes a high-low pressure switching chamber, a normal high pressure chamber and an oil outlet chamber, the valve sleeve is provided with an annular groove, and the high-low pressure switching chamber is communicated with the annular groove when the valve sleeve is at the lower end; when the valve sleeve is positioned at the upper end, the normal-high pressure cavity is communicated with the inner hole of the valve core through the through hole A on the valve sleeve and the through hole B on the valve core, and the through hole C on the valve core is communicated with the oil outlet cavity.
6. The control device for the blank-beating-preventing breaking hammer according to claim 4, wherein the piston comprises a section A, a section B, a section C, a section D and a section E in sequence from top to bottom, the diameter of the section A is the smallest, the diameters of the section B and the section D are the largest, a cylinder upper cavity is formed between the section A and the wall of the cylinder inner hole, and a cylinder lower cavity is formed between the section E and the wall of the cylinder inner hole; when high-pressure oil is in the upper cavity of the cylinder body, the piston can be driven to move downwards; when the upper cavity of the cylinder body is filled with low-pressure oil, the lower cavity of the cylinder body is filled with high-pressure oil, and the piston can be driven to move upwards.
7. The control device for the blank hammer preventing crushing hammer according to claim 6, wherein an oil drainage passage is provided at an upper portion of the piston or an upper portion of the inner cavity of the cylinder body.
8. The control device for the air-hammer-preventing breaking hammer as claimed in claim 7, wherein the oil drainage channel comprises an axially arranged groove and an annular groove, and the groove and the annular groove are arranged on the outer wall of the piston or the inner wall of the cylinder body; two ends of the groove are respectively communicated with the upper cavity of the cylinder body and the annular groove; when the high-low pressure conversion oil groove is communicated with the idle-driving prevention oil groove, high-pressure oil in the upper cavity of the cylinder body can enter the oil drainage groove through the oil drainage channel to drain oil, and the breaking hammer stops working.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020725266.3U CN212318413U (en) | 2020-04-30 | 2020-04-30 | Control device for air-hammer-preventing breaking hammer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020725266.3U CN212318413U (en) | 2020-04-30 | 2020-04-30 | Control device for air-hammer-preventing breaking hammer |
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| Publication Number | Publication Date |
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| CN212318413U true CN212318413U (en) | 2021-01-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020725266.3U Active CN212318413U (en) | 2020-04-30 | 2020-04-30 | Control device for air-hammer-preventing breaking hammer |
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| CN (1) | CN212318413U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114562493A (en) * | 2022-03-09 | 2022-05-31 | 王东凯 | Middle cylinder body structure of hydraulic breaking hammer |
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2020
- 2020-04-30 CN CN202020725266.3U patent/CN212318413U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114562493A (en) * | 2022-03-09 | 2022-05-31 | 王东凯 | Middle cylinder body structure of hydraulic breaking hammer |
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