CN211898651U - Prevent pulling and hinder large-scale hydraulic breaking hammer - Google Patents
Prevent pulling and hinder large-scale hydraulic breaking hammer Download PDFInfo
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- CN211898651U CN211898651U CN201922267547.9U CN201922267547U CN211898651U CN 211898651 U CN211898651 U CN 211898651U CN 201922267547 U CN201922267547 U CN 201922267547U CN 211898651 U CN211898651 U CN 211898651U
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Abstract
The large-scale hydraulic breaking hammer capable of preventing strain comprises a middle cylinder body, an oil seal fixer and a piston, wherein the oil seal fixer is provided with a plurality of oil seal mounting grooves, an oil seal fixing cavity, a high-low pressure conversion oil cavity, a high-pressure oil cavity and an oil seal mounting groove are sequentially arranged on the piston cavity, and the inner diameters of the oil seal fixing cavity, the high-low pressure conversion oil cavity, the high-pressure oil cavity and the oil seal mounting groove are all larger than that of the piston cavity; locate in the oil blanket fixed cavity piston cavity top, be equipped with the oil blanket assembly bench of inside salient between oil blanket fixed cavity and the high-low pressure conversion oil pocket, be equipped with the strengthening rib under the oil blanket fixer assembly bench between mesa and the high-pressure oil pocket inner wall, place in the oil blanket fixer in the oil blanket assembly bench, the utility model discloses increased well cylinder body can accept stronger pressure and pulling force at the thickness in the oil blanket fixed cavity, avoided well cylinder body oil blanket fixed slot position lead to the cylinder body to warp because of receiving too big pulling force and influence hydraulic oil to the pressure of piston and make pressure unstable.
Description
Technical Field
The utility model relates to a quartering hammer technical field, concretely relates to prevent large-scale hydraulic pressure quartering hammer that piston pulled.
Background
The hydraulic breaking hammer is combined with excavator, loader and other hydraulic station, and the hydraulic energy of the said equipment is used to realize the reciprocating impact of piston in the breaking hammer on pick rod to break the work object.
As shown in fig. 1, a hammer core of a conventional hydraulic breaking hammer mainly includes: nitrogen chamber (containing nitrogen gas injection valve), oil seal fixer, cylinder, piston, front shell, drill rod and change valve. The nitrogen chamber, the oil seal fixer (including the sealing element thereon), the cylinder body and the piston form a closed space, nitrogen is filled into the space (the interior of the nitrogen chamber) through the inflation valve, the piston moves upwards to compress the nitrogen along with the storage and release of nitrogen energy in the process of the piston reciprocating along the axial direction, the energy is stored, the piston moves downwards, and the hydraulic pressure and the nitrogen work together to push the piston to strike the drill rod.
The hydraulic breaking hammer works according to the following principle.
In the initial state, the piston is positioned at one end close to the drill rod under the action of nitrogen in the nitrogen chamber; at the moment of introducing high-pressure oil, the high-pressure oil enters the cylinder body and the interior of the reversing valve, and under the action of the hydraulic oil, the resultant force of the upper end surface of the valve core is greater than the resultant force of the lower end surface of the valve core, so that the valve is at the lower end of the reversing valve and is in a closed state.
In the piston return stage, on the basis of an initial state, under the action of high-pressure oil in the lower cavity, the piston moves upwards to compress nitrogen, the hydraulic oil in the upper cavity flows back to the oil tank, when the piston moves upwards to the highest point, the inside of the reversing valve controls the oil cavity to be communicated with the high-pressure oil, the valve moves upwards to the uppermost end of the reversing valve, an oil return opening on the valve is closed, an oil inlet is opened at the same time, and the high-pressure oil enters the high-pressure and low-pressure conversion cavity through the reversing valve. The high-low pressure conversion cavity at the upper part of the piston converts low pressure into high pressure.
And in the piston stroke stage, at the end of the return stroke of the piston, because the action area of the hydraulic oil in the upper cavity is larger than that of the lower cavity, the downward force is larger than the upward force, and the piston moves downward under the combined action of the oil pressure and the nitrogen pressure and strikes the drill rod.
When the piston moves downwards and is about to hit the drill rod, the signal oil cavity in the reversing valve is communicated with the low-pressure oil cavity of the cylinder body through a piston middle groove. The control oil cavity in the reversing valve is switched from high pressure to low pressure. The resultant force of the upper end surface of the valve is larger than that of the lower end surface of the valve, the valve moves downwards to the lowest end of the reversing valve and returns to the initial state, and a working cycle is completed.
The piston repeats the working process to complete the crushing task.
Present hydraulic hammer is in order to realize better crushing work, and hydraulic hammer all uses large-scale quartering hammer in present stage, and the impact force of increase quartering hammer, as the inside cell body that expands outward of cylinder body in the old-fashioned large-scale quartering hammer of cylinder body oil blanket fixer shown in figure 1 all will be with the quartering hammer in the cylinder body, installs the oil blanket fixer into, and this cell body expands outward, leads to this position cylinder body wall thickness attenuation of well cylinder body, the bulk strength step-down. Therefore, when the old large breaking hammer is used, the deformation of the cylinder body at the position of the middle cylinder body is larger than that of the cylinder body designed by the patent under the dual actions of high-pressure oil and bolt tensioning force, and therefore the fit clearance of the oil seal fixer, the piston and the cylinder body is enlarged. Resulting in a large pressure change of the high pressure oil. Therefore, the striking force of the breaking hammer is small, and the piston of the cylinder is easy to scratch.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides a high-stability large hydraulic breaking hammer, which comprises a middle cylinder body, an oil seal fixer and a piston, wherein the oil seal fixer is provided with a plurality of oil seal mounting grooves,
the middle cylinder body comprises a piston cavity and a through bolt hole, the length of the cylinder body is 945mm, the height of the cylinder body is 425mm, and the diameter of the piston cavity is 208-210 mm;
the piston cavity is sequentially provided with an oil seal fixing cavity, a high-low pressure conversion oil cavity, a high-pressure oil cavity and an oil seal mounting groove, and the inner diameters of the oil seal fixing cavity, the high-low pressure conversion oil cavity, the high-pressure oil cavity and the oil seal mounting groove are all larger than that of the piston cavity;
the oil seal fixing cavity is arranged at the top end of the piston cavity, an oil seal assembly platform protruding inwards is arranged between the oil seal fixing cavity and the high-low pressure conversion oil cavity, the inner diameter of the oil seal fixing cavity is 250mm, a reinforcing rib is arranged between the lower table surface of the oil seal fixer assembly platform and the inner wall of the high-pressure oil cavity, and the oil seal fixer is arranged in the oil seal assembly platform;
the joint of the high-pressure oil cavity and the piston cavity is provided with an anti-cracking fillet;
the oil seal mounting groove (8) mainly comprises a dust seal mounting groove, a U-shaped oil seal groove I, a U-shaped oil seal groove II, a buffer seal groove and an oil return groove.
Furthermore, the inner cavity of the oil seal fixer is provided with an air seal and three Stent seals, and the outer diameter of the oil seal fixer is provided with a plurality of o-shaped rings.
Further, the height of the oil seal fixer is 73.5-82mm, the air seal is a double-lip air seal, and at least four o-shaped rings are arranged.
Further, the distance from the assembly table to the top end of the piston cavity is 98.5 mm.
Furthermore, a plurality of oil return holes are formed in the oil seal fixer.
Further, the length of the piston is 1273mm, and the diameter of the middle part of the piston is 205 mm and 210 mm.
Furthermore, the number of the through bolt holes is at least four, the diameter of each through bolt hole is increased, and through bolts are arranged in the through bolt holes.
Further, the length of the through bolt is 1642-1645 mm.
Furthermore, the high-pressure oil cavity, the low-pressure oil cavity and the piston cavity are integrally formed by an anti-cracking fillet arranged at the joint.
Compared with the prior art, the invention has the beneficial effects that:
(1) the utility model discloses change the oil blanket fixed slot of the external expanding of prior art into the oil blanket assembly bench of inside setting, increased well cylinder body and can accept stronger pressure and pulling force at the thickness in the fixed chamber of oil blanket, avoided well cylinder body oil blanket fixed slot position lead to the cylinder body to warp because of receiving too big pulling force and influence hydraulic oil and make pressure unstable to the pressure of piston.
(2) The oil blanket installation cavity is than original quartering hammer height reduction, prevents that the piston when upper limit position, the oil blanket from crossing the cooperation position and leading to the oil leak.
(3) The reinforcing ribs are arranged between the oil seal assembling table and the piston cavity, so that the strength of the oil seal assembling table is enhanced, and the deformation of the cylinder body caused by assembling moment can be reduced.
(4) The utility model discloses widen cylinder body thickness, increased the length of cylinder body and piston, also increased the cooperation area of piston with the cylinder body when having increased cylinder body bulk strength and hitting power, reduced the strain risk of piston team cylinder body among the quartering hammer working process.
Description of the drawings:
for ease of illustration, the invention is described in detail by the following detailed description and accompanying drawings.
FIG. 1 is a cross-sectional view of the prior art;
FIG. 2 is a view of the structure of the present invention;
FIG. 3 is a detail drawing of the present invention;
fig. 4 is a view showing the structure of the stationary oil seal.
The oil seal fixing device comprises a middle cylinder body (1), an oil seal fixer (2), a piston (3), a piston cavity (4), an oil seal fixing cavity (5), a high-low pressure oil conversion cavity (6), a high-pressure oil cavity (7), an oil seal assembling groove (8), an oil seal fixer assembling table (9), a reinforcing rib (10) and an oil return hole (11).
The specific implementation mode is as follows:
the following detailed description of the present invention will be made in conjunction with the accompanying drawings, but the following examples are merely illustrative of preferred embodiments, which are provided to assist understanding of the present invention, and are not to be construed as limiting the present invention.
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout.
The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
Example 1
As shown in fig. 2 and 3, the following technical solutions are adopted in the present embodiment: the large-scale hydraulic breaking hammer capable of preventing strain comprises a middle cylinder body 1, an oil seal fixer 2 and a piston 3, wherein the oil seal fixer 2 is provided with a plurality of oil seal mounting grooves, the middle cylinder body 1 comprises a piston cavity 4 and a through bolt hole, the length of the middle cylinder body 1 is 945mm, the height of the cylinder body is 425mm, and the diameter of the piston cavity 4 is 208;
the piston cavity 4 is sequentially provided with an oil seal fixing cavity 5, a high-low pressure conversion oil cavity 6, a high-pressure oil cavity 7 and an oil seal mounting groove 8, and the inner diameters of the oil seal fixing cavity 5, the high-low pressure conversion oil cavity 6, the high-pressure oil cavity 7 and the oil seal mounting groove 8 are all larger than that of the piston cavity 4;
the utility model discloses a piston chamber, including oil blanket fixed cavity 5, oil blanket 4 tops, be equipped with between oil blanket fixed cavity 5 and the high-low pressure conversion oil pocket 6 inside outstanding oil blanket assembly bench 9, the assembly bench is 98.5mm to the distance on piston chamber 4 tops, 5 internal diameters of oil blanket fixer are 250mm, be equipped with strengthening rib 10 between mesa and the 6 inner walls of high-low pressure conversion oil pocket under the oil blanket assembly bench 9, place in the oil blanket fixer 2 on the oil blanket assembly bench 9, 2 inside including airtight and three ste seals of oil blanket fixer, 2 outsides of oil blanket fixer are equipped with a plurality of o type circles, 2 highly are 73.5mm of oil blanket fixer, airtight is two lips are airtight, o type circle has four at least.
The high-low pressure conversion oil cavity 6 is provided with an anti-cracking fillet at the joint of the high-pressure oil cavity 7 and the piston cavity 4, and the anti-cracking fillet at the joint of the high-pressure oil cavity 7 and the piston cavity 4 is integrally formed;
the oil seal mounting groove (8) mainly comprises a dust seal mounting groove, a U-shaped oil seal groove I, a U-shaped oil seal groove II, a buffer seal groove and an oil return groove.
A plurality of oil return holes 11 are arranged in the oil seal fixer 2.
The length of the piston 3 is 1273mm, and the diameter of the middle part of the piston 3 is 208 mm.
The through bolt hole is equipped with four at least, through bolt hole diameter increase, the through bolt that is equipped with in the through bolt hole. The length of the through bolt is 1642 mm.
Example 2
As shown in fig. 2 and 3, the following technical solutions are adopted in the present embodiment: the large-scale hydraulic breaking hammer capable of preventing strain comprises a middle cylinder body 1, an oil seal fixer 2 and a piston 3, wherein the oil seal fixer 2 is provided with a plurality of oil seal mounting grooves, the middle cylinder body 1 comprises a piston cavity 4 and a through bolt hole, the length of the middle cylinder body 1 is 945mm, the height of the cylinder body is 425mm, and the diameter of the piston cavity 4 is 208 mm;
an oil seal fixer installation cavity 5, a high-low pressure conversion oil cavity 6, a high-pressure oil cavity 7 and an oil seal installation groove 8 are sequentially arranged on the piston cavity 4, and the inner diameters of the oil seal fixing cavity 5, the high-low pressure conversion oil cavity 6, the high-pressure oil cavity 7 and the oil seal installation groove 8 are all larger than that of the piston cavity 4;
the utility model discloses a piston chamber, including oil blanket fixed cavity 5, oil blanket fixed cavity 5 and high-low pressure conversion oil cavity 6 are equipped with inward protruding oil blanket assembly bench 9 between, the assembly bench is 98.5mm to the distance on piston chamber 4 top, 5 internal diameters in oil blanket fixed cavity are 250mm, be equipped with strengthening rib 10 between mesa and the 6 inner walls in high-low pressure conversion oil cavity under the oil blanket assembly bench 9, place in the oil blanket fixer 2 on the oil blanket assembly bench 9, oil blanket fixer 2 is including inside sealed and three ste seal, the 2 outsides of oil blanket fixer is equipped with a plurality of o type circles, oil blanket fixer 2 height is 82mm, it is sealed that the gas is double lip mouth is airtight, o type circle has four at least.
The high-low pressure conversion oil cavity 6 is provided with an anti-cracking fillet at the joint of the high-pressure oil cavity 7 and the piston cavity 4, and the anti-cracking fillet at the joint of the high-pressure oil cavity 7 and the piston cavity 4 is integrally formed;
the oil seal mounting groove (8) mainly comprises a dust seal mounting groove, a U-shaped oil seal groove I, a U-shaped oil seal groove II, a buffer seal groove and an oil return groove.
A plurality of oil return holes 11 are arranged in the oil seal fixer 2.
The length of the piston 3 is 1273mm, and the diameter of the middle part of the piston 3 is 208 mm.
The through bolt hole is equipped with four at least, through bolt hole diameter increase, the through bolt that is equipped with in the through bolt hole. The length of the through bolt is 1645 mm.
The utility model overcomes among the prior art the atress of oil blanket fixer mounted position cell body warp and the strain problem of piston and cylinder body.
The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (9)
1. A large-scale hydraulic breaking hammer capable of preventing strain comprises a middle cylinder body (1), an oil seal fixer (2) and a piston (3), wherein the oil seal fixer (2) is provided with a plurality of oil seal mounting grooves, and is characterized in that,
the middle cylinder body (1) comprises a piston cavity (4) and a through bolt hole, the length of the middle cylinder body (1) is 945mm, the height of the cylinder body is 425mm, and the diameter of the piston cavity (4) is 208mm and 210 mm;
an oil seal fixing cavity (5), a high-low pressure conversion oil cavity (6), a high-pressure oil cavity (7) and an oil seal mounting groove (8) are sequentially arranged on the piston cavity (4), and the inner diameters of the oil seal fixing cavity (5), the high-low pressure conversion oil cavity (6), the high-pressure oil cavity (7) and the oil seal mounting groove (8) are all larger than that of the piston cavity (4);
the oil seal fixing cavity (5) is internally arranged at the top end of the piston cavity (4), an oil seal assembly table (9) protruding inwards is arranged between the oil seal fixing cavity (5) and the high-low pressure conversion oil cavity (6), the inner diameter of the oil seal fixing cavity (5) is 250mm, a reinforcing rib (10) is arranged between the lower table surface of the oil seal assembly table (9) and the inner wall of the high-pressure oil cavity (7), and the oil seal fixer (2) is arranged in the oil seal assembly table (9);
the joints of the high-pressure and low-pressure conversion oil cavity (6), the high-pressure oil cavity (7) and the piston cavity (4) are provided with anti-cracking fillets;
the oil seal mounting groove (8) mainly comprises a dust seal mounting groove, a U-shaped oil seal groove I, a U-shaped oil seal groove II, a buffer seal groove and an oil return groove.
2. The large-scale anti-pulling hydraulic breaking hammer according to claim 1, wherein the oil seal holder (2) comprises an air seal and three steiners inside, and a plurality of o-rings are arranged on the outer side of the oil seal holder (2).
3. The large-scale anti-pulling hydraulic breaking hammer according to claim 2, wherein the oil seal holder (2) has a height of 73.5-82mm, the air seal is a double-lip air seal, and the o-rings are at least four.
4. A large pull-proof hydraulic breaking hammer according to claim 1, characterized in that the distance from the assembly table to the top end of the piston chamber (4) is 98.5 mm.
5. The large-scale hydraulic breaking hammer for preventing pulling injury according to claim 1, wherein a plurality of oil return holes (11) are formed in the oil seal holder (2).
6. A large pull-proof hydraulic breaking hammer as claimed in claim 1, wherein the length of the piston (3) is 1273mm, and the diameter of the middle part of the piston (3) is 205-210 mm.
7. The pull-proof large hydraulic breaking hammer according to claim 1, wherein at least four through bolt holes are provided, the diameter of each through bolt hole is increased, and a through bolt is installed in each through bolt hole.
8. The pull-proof large hydraulic breaking hammer as claimed in claim 7, wherein the length of the through bolt is 1642 and 1645 mm.
9. The pulling-injury-preventing large-scale hydraulic breaking hammer as claimed in claim 1, wherein the high-pressure and low-pressure conversion oil cavity (6), the high-pressure oil cavity (7) and the piston cavity (4) are integrally formed by an anti-cracking fillet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922267547.9U CN211898651U (en) | 2019-12-17 | 2019-12-17 | Prevent pulling and hinder large-scale hydraulic breaking hammer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922267547.9U CN211898651U (en) | 2019-12-17 | 2019-12-17 | Prevent pulling and hinder large-scale hydraulic breaking hammer |
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| Publication Number | Publication Date |
|---|---|
| CN211898651U true CN211898651U (en) | 2020-11-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922267547.9U Active CN211898651U (en) | 2019-12-17 | 2019-12-17 | Prevent pulling and hinder large-scale hydraulic breaking hammer |
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| Country | Link |
|---|---|
| CN (1) | CN211898651U (en) |
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