CN212564199U - Hydraulic hammer with limiting and protecting structure - Google Patents
Hydraulic hammer with limiting and protecting structure Download PDFInfo
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- CN212564199U CN212564199U CN202021158473.1U CN202021158473U CN212564199U CN 212564199 U CN212564199 U CN 212564199U CN 202021158473 U CN202021158473 U CN 202021158473U CN 212564199 U CN212564199 U CN 212564199U
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- hammer
- limiting
- buffer
- cover body
- hydraulic hammer
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Abstract
The utility model relates to a pile hammer technical field especially relates to a hydraulic hammer with spacing protective structure. The utility model discloses set up the limit baffle who is fixed in the frame in the pneumatic cylinder below, can prevent effectively that the condition of hammer core quick back-impact pneumatic cylinder from taking place. The opening in the middle of the limiting baffle can also be used as a guide hole of the piston rod, and the connection offset error between the hammer core and the piston rod in the use process of the hydraulic hammer is reduced. The first buffer seat can clear up partial impact force of the hammer core when the hammer core rebounds and impacts to be close to the limit baffle, and reduces the impact force received by the limit baffle. And the second buffer structure that mounting panel, batter post, connecting seat etc. constitute below the first buffer seat can further reduce the impact force that limit baffle received.
Description
Technical Field
The utility model belongs to the technical field of the hydraulic hammer technique and specifically relates to a hydraulic hammer with spacing protective structure is related to.
Background
Chinese patent No. CN110158590A discloses a noise-control hydraulic impact hammer, which comprises a hammer core, a frame and a hydraulic cylinder, wherein the hammer core is movably disposed in the frame, the extending end of the piston rod of the hydraulic cylinder is connected to the hammer core, and the hammer core moves along the frame below a hydraulic support plate along with the piston rod of the hydraulic cylinder. The hydraulic cylinder is arranged on the hydraulic cylinder supporting plate, and the hammer core is positioned below the hydraulic cylinder supporting plate.
The above prior art solutions have the following drawbacks: when the hydraulic hammer adopts a free-falling hammering mode, the hammer core has the probability of quickly rebounding to impact the hydraulic cylinder, so that the hydraulic cylinder is possibly damaged.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a hydraulic hammer with spacing protective structure, it has the characteristics that the restriction hammer core removed, protection pneumatic cylinder.
The above object of the present invention can be achieved by the following technical solutions: the hydraulic hammer with the limiting protection structure comprises a hammer core, a rack and a hydraulic cylinder, wherein the hydraulic cylinder is fixedly installed on the upper portion of the rack, the hammer core is movably arranged in the rack, and the lower end of a piston rod of the hydraulic cylinder is connected with the hammer core. A limit baffle arranged in the frame is arranged below the hydraulic cylinder, and a space is reserved between the limit baffle and the hydraulic cylinder; the middle of the limiting baffle is provided with a through hole for the piston rod to move in a telescopic mode, and the inner diameter of the through hole is smaller than the diameter of the hammer core.
By adopting the technical scheme, the limit baffle fixed on the frame is arranged below the hydraulic cylinder, so that the situation that the hammer core quickly collides against the hydraulic cylinder can be effectively prevented. And the opening in the middle of the limiting baffle can also be used as a guide hole of the piston rod, so that the connection offset error between the hammer core and the piston rod in the use process of the hydraulic hammer is reduced.
The present invention may be further configured in a preferred embodiment as: a plurality of first buffer seats are uniformly fixed below the limiting baffle.
By adopting the technical scheme, the first buffer seat can clear up partial impact force of the hammer core when the hammer core rebounds and impacts to be close to the limit baffle, and the impact force received by the limit baffle is reduced.
The present invention may be further configured in a preferred embodiment as: also comprises a cover body; an upper groove is formed below the first buffer seat; the mounting plate is mounted in the upper groove, a plurality of inclined columns are arranged below the mounting plate, and the plurality of inclined columns are uniformly distributed by taking the central axis of the mounting plate as an axis; the inclined columns are obliquely arranged from top to bottom; a connecting seat is arranged below the mounting plate and abuts against the lower surface of the inclined column; an outer flange is arranged at the lower end part of the first buffer seat radially outwards; the outer wall of the connecting seat is provided with a ring groove; the upper end part of the cover body is radially inwards provided with an upper cover body convex part, the inner diameter of the upper cover body convex part is smaller than the inner diameter of the outer flange, and the inner diameter of the upper cover body convex part is not smaller than the outer diameter of the first buffer seat; the lower end part of the cover body is provided with a cover body lower convex part which is inward in the radial direction, and the cover body lower convex part is matched with the annular groove.
Adopt above-mentioned technical scheme, the second buffer structure who constitutes by mounting panel, batter post, connecting seat etc. below the first buffer seat can further reduce the impact force that limit baffle received. When the connecting seat contacts with the upper end face of the hammer core, the connecting seat moves upwards along with the hammer core and presses the inclined column, so that the inclined column inclines outwards and deforms, and a buffering and damping function is provided.
The cover body connects the first buffer seat with the connecting seat through the upper convex part of the cover body and the lower convex part of the cover body, and when the connecting seat moves upwards under stress, the upper convex part of the cover body moves along the outer wall of the first buffer seat.
The present invention may be further configured in a preferred embodiment as: a chute matched with the inclined column is arranged on the connecting seat; the length direction of the sliding groove is consistent with the direction of the projection of the inclined column to the connecting seat; the length of the sliding groove is not less than that of the inclined column. The lower end part of the inclined column is normally positioned in the sliding groove.
By adopting the technical scheme, the inclined column is matched with the sliding groove, so that the radial deviation caused by the impact extrusion of the hammer core on the second buffer structure can be reduced.
The present invention may be further configured in a preferred embodiment as: a buffer pad is arranged in the middle of the upper surface of the sliding groove connecting seat.
By adopting the technical scheme, when the batter post is bent and deformed to a certain degree, the cushion pad below the batter post moves upwards and is propped against the lower surfaces of the batter post and the mounting plate, so that the impact continuously received by the batter post can be reduced, and the buffering effect is achieved.
The present invention may be further configured in a preferred embodiment as: and a reinforcing strip is arranged between the inclined column and the mounting plate.
By adopting the technical scheme, the reinforcing strips can reduce the probability of incapability of restoring caused by bending due to excessive deformation of the batter post.
The present invention may be further configured in a preferred embodiment as: the upper wall of the ring groove is provided with an embedded groove which is concavely arranged upwards.
By adopting the technical scheme, the caulking groove can ensure that the cover body and the connecting seat are stably installed, and the second buffer structure is prevented from being separated from the second buffer structure due to the vibration of the hammering work of the hammer core.
The present invention may be further configured in a preferred embodiment as: a buffer sleeve is detachably mounted below the first buffer seat.
Adopt above-mentioned technical scheme, the cushion collar can further provide cushioning effect for first cushion socket, and demountable installation's cushion collar is convenient for change, is overhauld moreover.
The present invention may be further configured in a preferred embodiment as: and a plurality of reinforcing ribs are fixedly connected between the limiting baffle and the inner wall of the frame.
By adopting the technical scheme, the reinforcing ribs can improve the stability of the installation between the limiting baffle and the rack.
The present invention may be further configured in a preferred embodiment as: the height of the reinforcing rib positioned below the limiting baffle is smaller than that of the first buffer seat.
By adopting the technical scheme, the structure can avoid the direct contact between the reinforcing rib and the hammer core, and the hammer core and the reinforcing rib are subjected to rigid impact and damage.
To sum up, the utility model discloses a following at least one useful technological effect:
1. the limit baffle fixed on the frame is arranged below the hydraulic cylinder, so that the situation that the hammer core quickly collides against the hydraulic cylinder can be effectively prevented.
2. The opening in the middle of the limiting baffle can also be used as a guide hole of the piston rod, and the connection offset error between the hammer core and the piston rod in the use process of the hydraulic hammer is reduced.
3. The first buffer seat can clear up partial impact force of the hammer core when the hammer core rebounds and impacts to be close to the limit baffle, and reduces the impact force received by the limit baffle.
4. The second buffer structure formed by the mounting plate, the inclined column, the connecting seat and the like below the first buffer seat can further reduce the impact force received by the limit baffle.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
fig. 2 is a schematic structural view of the limit baffle and the first buffer seat of the present invention;
FIG. 3 is a schematic cross-sectional view of the first buffer seat, the second buffer structure and the buffer sleeve of the present invention;
fig. 4 is a schematic structural diagram of a second buffer structure of the present invention.
In the figure, 1, a hammer core; 2. a frame; 3. a hydraulic cylinder; 4. a piston rod; 5. a limit baffle; 6. a port; 7. reinforcing ribs; 8. a first buffer seat; 9. an upper groove; 10. mounting a plate; 11. an oblique column; 12. a connecting seat; 13. a chute; 14. a cushion pad; 15. a reinforcing strip; 16. a cover body; 17. an outer flange; 18. a ring groove; 19. caulking grooves; 20. an upper convex part of the cover body; 21. a cover body lower convex part; 22. a buffer sleeve.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1, for the utility model discloses a, hydraulic hammer with spacing protective structure, including hammer core 1, frame 2 and pneumatic cylinder 3, 3 fixed mounting of pneumatic cylinder are in frame 2 upper portions, and hammer core 1 activity sets up in frame 2, and 4 lower extremes of piston rod of pneumatic cylinder 3 are connected with hammer core 1. A limit baffle 5 arranged in the frame 2 is arranged below the hydraulic cylinder 3, and a space is reserved between the limit baffle 5 and the hydraulic cylinder 3; the middle of the limit baffle 5 is provided with a through hole 6 for the piston rod 4 to move in a stretching way, and the inner diameter of the through hole 6 is smaller than the diameter of the hammer core 1. Set up the limit baffle 5 who is fixed in frame 2 below pneumatic cylinder 3, can prevent effectively that hammer core 1 from strikeing the condition emergence of pneumatic cylinder 3 fast. And the through hole 6 in the middle of the limiting baffle 5 can also be used as a guide hole of the piston rod 4, so that the connection offset error between the hammer core 1 and the piston rod 4 in the use process of the hydraulic hammer is reduced. A plurality of reinforcing ribs 7 are fixedly connected between the limiting baffle 5 and the inner wall of the frame 2. The reinforcing ribs 7 can improve the stability of installation between the limiting baffle 5 and the frame 2.
As shown in fig. 1 and 2, a plurality of first buffer seats 8 are uniformly fixed below the limit baffle 5. The first buffer seat 8 can clear up partial impact force of the hammer core 1 when the hammer core 1 rebounds and impacts to be close to the limit baffle 5, and the impact force received by the limit baffle 5 is reduced. The height of the reinforcing rib 7 positioned below the limit baffle 5 is less than that of the first buffer seat 8. Therefore, the situation that the reinforcing rib 7 is directly contacted with the hammer core 1 to cause rigid impact and damage of the hammer core 1 and the reinforcing rib 7 can be avoided.
As shown in fig. 3 and 4, an upper groove 9 is arranged below the first buffer seat 8; an installation plate 10 is installed in the upper groove 9, a plurality of inclined columns 11 are arranged below the installation plate 10, and the plurality of inclined columns 11 are uniformly distributed by taking the central axis of the installation plate 10 as the axis; the inclined column 11 is arranged obliquely outwards from top to bottom; a connecting seat 12 is arranged below the mounting plate 10, and a sliding groove 13 matched with the inclined column 11 is arranged on the connecting seat 12. The length direction of the sliding chute 13 is consistent with the direction of the projection of the inclined column 11 to the connecting seat 12; the length of the sliding groove 13 is not less than that of the inclined column 11. The lower end of the batter post 11 is normally located within the chute 13.
As shown in fig. 3 and 4, the second buffer structure, which is composed of the mounting plate 10, the inclined column 11, the connecting seat 12, and the like under the first buffer seat 8, can further reduce the impact force received by the limit stop 5. When the connecting seat 12 contacts with the upper end surface of the hammer core 1, the connecting seat moves upwards along with the hammer core 1 and presses the inclined column 11, so that the inclined column 11 inclines outwards and deforms to provide a buffering and damping function. The inclined column 11 is matched with the sliding groove 13 for use, so that the radial deviation of the second buffer structure caused by impact extrusion of the hammer core 1 can be reduced.
As shown in fig. 3 and 4, a cushion 14 is disposed in the middle of the upper surface of the connecting seat 12 of the sliding slot 13. When the inclined column 11 is bent and deformed to a certain degree, the cushion pad 14 below the inclined column 11 moves upwards and is abutted to the lower surfaces of the inclined column 11 and the mounting plate 10, so that the impact on the inclined column 11 can be reduced, and a buffering effect is achieved. A reinforcing bar 15 is arranged between the inclined column 11 and the mounting plate 10. The reinforcing bars 15 can reduce the probability of the batter post 11 being unable to be restored due to bending caused by excessive deformation.
As shown in fig. 3, the first buffer seat 8 is connected with the outer wall of the connecting seat 12 and covered with a cover 16. An outer flange 17 is provided radially outwardly of the lower end of the first cushion socket 8. The outer wall of the connecting seat 12 is provided with a ring groove 18; the upper wall of the ring groove 18 is provided with an embedded groove 19 which is arranged upwards in a concave way. An upper convex part of the cover body 16 is arranged at the upper end part of the cover body 16 in the radial inward direction, the inner diameter of the upper convex part of the cover body 16 is smaller than the inner diameter of the outer flange 17, and the inner diameter of the upper convex part of the cover body 16 is not smaller than the outer diameter of the first buffer seat 8; the lower end of the cover 16 is provided with a radially inward lower projection of the cover 16, and the lower projection of the cover 16 is matched with the annular groove 18. The cover 16 connects the first buffer seat 8 with the connecting seat 12 through the upper convex part of the cover 16 and the lower convex part of the cover 16, and when the connecting seat 12 is forced to move upwards, the upper convex part of the cover 16 moves along the outer wall of the first buffer seat 8.
As shown in fig. 3, a buffer housing 22 is detachably mounted under the first buffer base 8. The buffer sleeve 22 can further provide a buffer function for the first buffer seat 8, and the buffer sleeve 22 which is detachably arranged is convenient to replace and overhaul.
The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.
Claims (10)
1. Hydraulic hammer with spacing protective structure, including hammer core (1), frame (2) and pneumatic cylinder (3), pneumatic cylinder (3) fixed mounting is on frame (2) upper portion, and hammer core (1) activity sets up in frame (2), and piston rod (4) lower extreme and hammer core (1) of pneumatic cylinder (3) are connected its characterized in that: a limit baffle (5) arranged in the rack (2) is arranged below the hydraulic cylinder (3), and a space is reserved between the limit baffle (5) and the hydraulic cylinder (3); a through hole (6) for the piston rod (4) to move in a telescopic mode is formed in the middle of the limiting baffle (5), and the inner diameter of the through hole (6) is smaller than the diameter of the hammer core (1).
2. The hydraulic hammer with a limiting and protecting structure according to claim 1, wherein: a plurality of first buffer seats (8) are uniformly fixed below the limiting baffle (5).
3. The hydraulic hammer with a limiting and protecting structure according to claim 2, wherein: also comprises a cover body (16); an upper groove (9) is arranged below the first buffer seat (8); an installation plate (10) is installed in the upper groove (9), a plurality of inclined columns (11) are arranged below the installation plate (10), and the plurality of inclined columns (11) are uniformly distributed by taking the central axis of the installation plate (10) as an axis; the inclined column (11) is arranged in an inclined manner from top to bottom;
a connecting seat (12) is arranged below the mounting plate (10), and the connecting seat (12) is abutted against the lower surface of the inclined column (11);
an outer flange (17) is arranged at the lower end part of the first buffer seat (8) radially outwards; an annular groove (18) is formed in the outer wall of the connecting seat (12); an upper convex part of the cover body (16) is arranged at the upper end part of the cover body (16) in the radial inward direction, the inner diameter of the upper convex part of the cover body (16) is smaller than the inner diameter of the outer flange (17), and the inner diameter of the upper convex part of the cover body (16) is not smaller than the outer diameter of the first buffer seat (8); the lower end part of the cover body (16) is provided with a cover body (16) lower convex part which is inward in the radial direction, and the cover body (16) lower convex part is matched with the ring groove (18).
4. The hydraulic hammer with a limiting and protecting structure according to claim 3, wherein: a sliding groove (13) matched with the inclined column (11) is arranged on the connecting seat (12); the length direction of the sliding groove (13) is consistent with the direction of the projection of the inclined column (11) to the connecting seat (12); the length of the sliding groove (13) is not less than that of the inclined column (11).
5. The hydraulic hammer with a limiting and protecting structure according to claim 4, wherein: a buffer pad (14) is arranged in the middle of the upper surface of the sliding groove (13) connecting seat (12).
6. The hydraulic hammer with a limiting and protecting structure according to claim 3, wherein: and a reinforcing strip (15) is arranged between the inclined column (11) and the mounting plate (10).
7. The hydraulic hammer with a limiting and protecting structure according to claim 3, wherein: the upper wall of the ring groove (18) is provided with an embedded groove (19) which is arranged in a concave manner upwards.
8. The hydraulic hammer with a limiting and protecting structure according to claim 2, wherein: a buffer sleeve (22) is detachably mounted below the first buffer seat (8).
9. The hydraulic hammer with a limiting and protecting structure according to claim 2, wherein: a plurality of reinforcing ribs (7) are fixedly connected between the limiting baffle (5) and the inner wall of the frame (2).
10. The hydraulic hammer with a limit guard structure according to claim 9, wherein: the height of the reinforcing rib (7) positioned below the limiting baffle (5) is smaller than that of the first buffer seat (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021158473.1U CN212564199U (en) | 2020-06-20 | 2020-06-20 | Hydraulic hammer with limiting and protecting structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021158473.1U CN212564199U (en) | 2020-06-20 | 2020-06-20 | Hydraulic hammer with limiting and protecting structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212564199U true CN212564199U (en) | 2021-02-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021158473.1U Active CN212564199U (en) | 2020-06-20 | 2020-06-20 | Hydraulic hammer with limiting and protecting structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212564199U (en) |
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2020
- 2020-06-20 CN CN202021158473.1U patent/CN212564199U/en active Active
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