CN211202729U - Shock-absorbing mechanism of air shovel - Google Patents
Shock-absorbing mechanism of air shovel Download PDFInfo
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- CN211202729U CN211202729U CN201922073660.3U CN201922073660U CN211202729U CN 211202729 U CN211202729 U CN 211202729U CN 201922073660 U CN201922073660 U CN 201922073660U CN 211202729 U CN211202729 U CN 211202729U
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- connecting sleeve
- sleeve
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Abstract
The utility model discloses a shock absorption mechanism of an air shovel, which comprises a connecting sleeve, a hollow cylinder body, a hammer body, a front body and a shovel drill rod, wherein the hammer body is movably arranged in the cylinder body, the connecting sleeve comprises a sleeve through hole and an inner cavity which are mutually communicated, and the sleeve through hole is sealed and is movably provided with a shock absorption rod for air inlet; one end of the shock absorption rod axially extends into the inner cavity of the connecting sleeve, and the end part of the extending side is connected with a shock absorption spring; the connecting position of cylinder body and adapter sleeve is equipped with the bolster of admitting air, is equipped with the guiding hole on the bolster of admitting air, and the damping rod is equipped with damping spring's one end and the sealed clearance fit of guiding hole, and damping spring's the other end is fixed in the guiding hole. The utility model discloses the damper of spade who obtains, through setting up damping device, can effectively reduce the vibrations of conduction to the spade handle in the spade use, prolong the life of spade, improve the comfort level that the spade used.
Description
Technical Field
The utility model relates to a pneumatic mechanism, especially a damper of air spade.
Background
The air spade is used for breaking the air tool of operations such as tearing open, shovel soil as one kind, and the reciprocal hammering spade borer of hammer block in the main dependence cylinder body carries out the operation, because the impact that the hammer block motion produced can lead to the air spade to shake in succession in the actual work process, leads to the connection of air spade structure to become flexible easily, influences air spade life and gas tightness to make the user feel uncomfortable.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the defects of the prior art and providing a damping mechanism of an air shovel with good damping effect and prolonged service life.
In order to achieve the above object, the present invention provides a damping mechanism for an air shovel, which comprises a connecting sleeve, a hollow cylinder, a hammer, a front body and a shovel rod, wherein the connecting sleeve is connected with the cylinder in a sealing manner, the cylinder is connected with the front body, the hammer is movably arranged in the cylinder, and the shovel rod is inserted into the end of the front body; the connecting sleeve comprises a sleeve through hole and an inner cavity which are communicated with each other, and the sleeve through hole is sealed and is movably provided with a shock absorption rod for air inlet; one end of the shock absorption rod axially extends into the inner cavity of the connecting sleeve, and the end part of the extending side is connected with a shock absorption spring; an air inlet buffer piece is arranged at the connecting position of the cylinder body and the connecting sleeve, and two ends of the air inlet buffer piece are respectively connected with the connecting sleeve and the cylinder body; the air inlet buffer piece is provided with a guide hole, a bypass air inlet hole and an air outlet hole which communicates the guide hole with the outer side of the air inlet buffer piece; one end of the damping rod, which is provided with a damping spring, is in sealing movable fit with the guide hole, and the other end of the damping spring is fixed in the guide hole; an air inlet channel is arranged in the shock absorption rod and is communicated with an inner cavity of the connecting sleeve; the inner cavity of the connecting sleeve is sealed by one end of the air inlet buffer piece and is communicated with the bypass air inlet; the cylinder body comprises an inner hole and a cylinder bypass air inlet, one end of the inner hole, facing the connecting sleeve, is sealed by an air inlet buffer, and a hammer hole with the diameter smaller than that of the inner hole is arranged at the position, connected with the front body, of the cylinder body; the hammer body comprises a large section matched with the inner hole and a small section matched with the hammer hole, and when the hammer body impacts the spade drill rod, the small section extends into the front body; the inner hole is divided into an upper cavity and a lower cavity by a large section, and the two ends of the upper cavity are respectively provided with an air inlet buffer part and a large section of a hammer body; the cylinder bypass air inlet channel is communicated with the bypass air inlet hole and the lower cavity; the hammer body is internally provided with a ventilation hole which is communicated with the peripheral surfaces of the large section end part and the small end part; the front body is provided with an exhaust hole.
For convenient installation, the air inlet buffer piece comprises thread sections at two ends and a smooth section in the middle, and the two ends are respectively in threaded connection with the inner cavity of the connecting sleeve and the inner hole of the cylinder body.
The connecting sleeve covers the smooth section of the air inlet buffer part, and a through hole is formed in the side face of the connecting sleeve at a position corresponding to the air outlet hole.
In order to facilitate installation, the shock-absorbing rod is prevented from rotating in the using process, the sleeve through hole is a stepped hole and is a large end facing the inner cavity side, a key groove is formed in the small end of the stepped hole, the surface of the shock-absorbing rod is in a stepped shaft shape matched with the sleeve through hole, a key is arranged at the position corresponding to the small end, and the axial length of the key groove is greater than that of the key.
In order to improve the efficiency of the gas path, the gas inlet passage and the scavenging holes respectively comprise a central hole and radial holes which are communicated with the central hole and the periphery and distributed around the axis; at the moment, the air inlet channel of the shock absorption rod is communicated with the connecting sleeve through the radial hole.
The utility model discloses the damper of spade who obtains, through setting up damping device, can effectively reduce the vibrations of conduction to the spade handle in the spade use, prolong the life of spade, improve the comfort level that the spade used.
Drawings
FIG. 1 is a schematic view of an embodiment 1 of a shock absorbing mechanism of an air shovel of the present invention when used in an air shovel;
FIG. 2 is a schematic structural view of embodiment 1;
FIG. 3 is a schematic structural view of example 2;
fig. 4 is an enlarged schematic view at a in fig. 3.
In the figure: spade drill rod 1, front body 2, cylinder body 3, connecting sleeve 4, shock-absorbing rod 5, shock-absorbing spring 6, air inlet buffer 7, hammer 8, key 9, exhaust hole 20, inner hole 30, cylinder bypass air inlet 31, hammer hole 32, sleeve through hole 40, inner cavity 41, through hole 42, key groove 43, air inlet 50, guide hole 70, bypass air inlet 71, air outlet 72, threaded section 73, smooth section 74, large section 80, small section 81, ventilation hole 82, upper cavity 300, lower cavity 301, central hole 820 and radial hole 821.
Detailed Description
The present invention will be further explained with reference to the drawings and examples.
Example 1:
the shock absorbing mechanism of the air shovel described in this embodiment, as shown in fig. 1, includes a connecting sleeve 4, a hollow cylinder 3, a hammer 8, a front body 2, and a shovel rod 1, where the connecting sleeve 4 is connected to the cylinder 3 in a sealing manner, the cylinder 3 is connected to the front body 2, the hammer 8 is movably disposed in the cylinder 3, and the shovel rod 1 is inserted into an end of the front body 2; as shown in fig. 2, the connecting sleeve 4 includes a sleeve through hole 40 and an inner cavity 41 which are communicated with each other, and the sleeve through hole 40 is hermetically and movably provided with a shock absorption rod 5 for air intake; one end of the shock absorption rod 5 extends into the inner cavity 41 of the connecting sleeve 4 along the axial direction, and the end part of the extending side is connected with a shock absorption spring 6; an air inlet buffer 7 is arranged at the connecting position of the cylinder body 3 and the connecting sleeve 4, and two ends of the air inlet buffer 7 are respectively connected with the connecting sleeve 4 and the cylinder body 3; the air inlet buffer 7 is provided with a guide hole 70, a bypass air inlet hole 71 and an air outlet hole 72 for communicating the guide hole 70 with the outer side of the air inlet buffer 7; one end of the damping rod 5 provided with the damping spring 6 is in sealing movable fit with the guide hole 70, and the other end of the damping spring 6 is fixed in the guide hole 70; an air inlet channel 50 is arranged in the shock absorption rod 5, and the air inlet channel 50 is communicated with an inner cavity 41 of the connecting sleeve 4; the inner cavity 41 of the connecting sleeve 4 is closed by one end of the air inlet buffer 7 and is communicated with the bypass air inlet hole 71; the cylinder body 3 comprises an inner hole 30 and a cylinder bypass air inlet channel 31, one end of the inner hole 30, which faces the connecting sleeve 4, is sealed by the air inlet buffer 7, and a hammer hole 32 with the diameter smaller than that of the inner hole 30 is arranged at the position where the cylinder body 3 is connected with the front body 2; the hammer body 8 comprises a large section 80 matched with the inner hole 30 and a small section 81 matched with the hammer hole 32, and when the hammer body 8 impacts the spade drill rod 1, the small section 81 extends into the front body 2; the inner hole 30 is divided into an upper cavity 300 and a lower cavity 301 by a large section 80, and two ends of the upper cavity 300 are respectively provided with the air inlet buffer 7 and the large section 80 of the hammer body 8; the cylinder bypass air inlet passage 31 is communicated with the bypass air inlet hole 71 and the lower cavity 301; a ventilation hole 82 is arranged in the hammer body 8, and the ventilation hole 82 is communicated with the outer peripheral surfaces of the end part and the small end of the large section 80; the precursor 2 is provided with a vent 20.
In this embodiment, as shown in fig. 1, the shock absorbing rod 5 is connected to the air shovel handle, and the air inlet duct is communicated with an air inlet pipeline in the air shovel handle.
In the actual working process, compressed air enters the lower cavity 301 through the air inlet 50, the bypass air inlet 71 and the cylinder bypass air inlet 31 to push the hammer body 8 to be away from the spade drill rod 1, at the moment, the ventilation hole 82 is sealed by the hammer hole 32, so that the air in the upper cavity 300 and the ventilation hole 82 is compressed until the hammer body 8 rises to the point that the ventilation hole 82 is communicated with the lower cavity 301, at the moment, the compressed air rushes into the upper cavity 300 through the ventilation hole 82, and the upper cavity 300 and the lower cavity 301 generate a great pressure difference instantly to push the hammer body 8 to hammer the spade drill rod 1 rapidly downwards; in the process, the movement of the hammer 8 and the spade drill 1 can impact the front body 2 and the cylinder body 3, so that the connecting sleeve 4, the cylinder body 3 and the front body 2 which are connected into a whole can slide relative to the shock absorption rod 5, and the shock absorption spring 6 is compressed to buffer the movement of the connecting sleeve 4, the cylinder body 3 and the front body 2 so as to reduce the shock.
The damper of the air shovel that this embodiment provided, through setting up damping device, can effectively reduce the vibrations of conduction on the air shovel handle in the air shovel use, the life of extension air shovel improves the comfort level that the air shovel used.
Example 2:
in the shock absorbing mechanism of the air shovel described in this embodiment, as shown in fig. 3 and 4, in addition to the features described in embodiment 1, for the convenience of installation, the air inlet buffer 7 includes a threaded section 73 at two ends and a smooth section 74 in the middle, and the two ends are respectively in threaded connection with the inner cavity 41 of the connecting sleeve 4 and the inner hole 30 of the cylinder 3.
As shown in fig. 4, the connecting sleeve 4 covers the smooth section 74 of the air inlet buffer 7, and the side surface of the connecting sleeve 4 is provided with a through hole 42 at a position corresponding to the air outlet hole 72.
In order to facilitate installation and avoid rotation of the shock-absorbing rod 5 in the use process, as shown in fig. 3, the sleeve through hole 40 is a stepped hole and is a large end facing the inner cavity 41 side, a key groove 43 is arranged at a small end of the stepped hole, the surface of the shock-absorbing rod 5 is in a stepped shaft shape matched with the sleeve through hole 40, a key 9 is arranged at a position corresponding to the small end, and the axial length of the key groove 43 is greater than that of the key 9.
In order to improve the efficiency of the air path, as shown in fig. 3, the inlet duct 50 and the ventilating holes 82 each include a central hole 820 and radial holes 821 which communicate the central hole 820 with the outer periphery and are distributed around the axis; the air inlet passage 50 of the damper rod 5 is communicated with the connection sleeve 4 through the radial hole 821 at this time.
The damper of the air shovel that this embodiment provided admits air rapid stabilization to shock attenuation pole 5 can not take place to rotate relative adapter sleeve 4, has guaranteed the operational reliability of air shovel.
While the embodiments described above have been described with reference to an annular shovel handle for showing the overall configuration of the shovel, it should be understood that the shovel shock absorbing mechanism may be connected to a T-handle or any other shovel handle having an air inlet line.
Claims (6)
1. A shock absorption mechanism of an air shovel comprises a connecting sleeve (4), a hollow cylinder body (3), a hammer body (8), a front body (2) and a shovel rod (1), wherein the connecting sleeve (4) is connected with the cylinder body (3) in a sealing mode, the cylinder body (3) is connected with the front body (2), the hammer body (8) is movably arranged in the cylinder body (3), and the shovel rod (1) is inserted into the end portion of the front body (2), and the shock absorption mechanism is characterized in that the connecting sleeve (4) comprises a sleeve through hole (40) and an inner cavity (41) which are communicated with each other, and a shock absorption rod (5) used for air inlet is arranged in the sleeve through hole (40) in a sealing mode and can move; one end of the shock absorption rod (5) extends into the inner cavity (41) of the connecting sleeve (4) along the axial direction, and the end part of the extending side is connected with a shock absorption spring (6); an air inlet buffer piece (7) is arranged at the connecting position of the cylinder body (3) and the connecting sleeve (4), and two ends of the air inlet buffer piece (7) are respectively connected with the connecting sleeve (4) and the cylinder body (3); the air inlet buffer piece (7) is provided with a guide hole (70), a bypass air inlet hole (71) and an air outlet hole (72) which communicates the guide hole (70) with the outer side of the air inlet buffer piece (7); one end of the damping rod (5) provided with the damping spring (6) is in sealing movable fit with the guide hole (70), and the other end of the damping spring (6) is fixed in the guide hole (70); an air inlet channel (50) is arranged in the shock absorption rod (5), and the air inlet channel (50) is communicated with an inner cavity (41) of the connecting sleeve (4); the inner cavity (41) of the connecting sleeve (4) is closed by one end of the air inlet buffer piece (7) and is communicated with the bypass air inlet hole (71); the cylinder body (3) comprises an inner hole (30) and a cylinder bypass air inlet channel (31), one end, facing the connecting sleeve (4), of the inner hole (30) is closed by an air inlet buffer (7), and a hammer hole (32) with the diameter smaller than that of the inner hole (30) is formed in the position, connected with the front body (2), of the cylinder body (3); the hammer body (8) comprises a large section (80) matched with the inner hole (30) and a small section (81) matched with the hammer hole (32), and when the hammer body (8) impacts the spade drill rod (1), the small section (81) extends into the front body (2); the inner hole (30) is divided into an upper cavity (300) and a lower cavity (301) by a large section (80), and the two ends of the upper cavity (300) are respectively provided with an air inlet buffer (7) and the large section (80) of the hammer body (8); the cylinder bypass air inlet channel (31) is communicated with a bypass air inlet hole (71) and the lower cavity (301); a ventilation hole (82) is formed in the hammer body (8), and the ventilation hole (82) is communicated with the outer peripheral surface of the end part of the large section (80) and the small end; the precursor (2) is provided with an exhaust hole (20).
2. A shock absorbing mechanism of air shovel according to claim 1, characterized in that said air-intake buffer (7) comprises a threaded section (73) at both ends and a smooth section (74) in the middle, both ends are respectively in threaded connection with the inner cavity (41) of the connecting sleeve (4) and the inner hole (30) of the cylinder body (3).
3. Spade's shock-absorbing mechanism according to claim 2, characterized in that the connecting sleeve (4) covers the smooth section (74) of the air-intake buffer (7) and the side of the connecting sleeve (4) is provided with a through hole (42) at a position corresponding to the air outlet hole (72).
4. A shock-absorbing mechanism of air shovel according to claim 1, 2 or 3, wherein said sleeve through hole (40) is a stepped hole and has a larger end toward the inner cavity (41), a key groove (43) is formed at the smaller end of the stepped hole, the surface of said shock-absorbing rod (5) has a stepped shaft shape fitted with the sleeve through hole (40), a key (9) is formed at the position corresponding to the smaller end, and the axial length of said key groove (43) is greater than the length of said key (9).
5. Spade according to claim 1, 2 or 3, characterized in that the air inlet channel (50) and the ventilation opening (82) each comprise a central opening (820) and radial openings (821) connecting the central opening (820) to the outer circumference and distributed around the axis.
6. Spade according to claim 4, characterized in that the air inlet channel (50) and the ventilation opening (82) each comprise a central opening (820) and radial openings (821) connecting the central opening (820) to the outer circumference and distributed around the axis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922073660.3U CN211202729U (en) | 2019-11-27 | 2019-11-27 | Shock-absorbing mechanism of air shovel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922073660.3U CN211202729U (en) | 2019-11-27 | 2019-11-27 | Shock-absorbing mechanism of air shovel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211202729U true CN211202729U (en) | 2020-08-07 |
Family
ID=71863296
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922073660.3U Active CN211202729U (en) | 2019-11-27 | 2019-11-27 | Shock-absorbing mechanism of air shovel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211202729U (en) |
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2019
- 2019-11-27 CN CN201922073660.3U patent/CN211202729U/en active Active
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