CN106930267B - Hydraulic tamping device and hydraulic tamping machine - Google Patents
Hydraulic tamping device and hydraulic tamping machine Download PDFInfo
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- CN106930267B CN106930267B CN201710302581.8A CN201710302581A CN106930267B CN 106930267 B CN106930267 B CN 106930267B CN 201710302581 A CN201710302581 A CN 201710302581A CN 106930267 B CN106930267 B CN 106930267B
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/02—Improving by compacting
- E02D3/046—Improving by compacting by tamping or vibrating, e.g. with auxiliary watering of the soil
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
- E01C19/22—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for consolidating or finishing laid-down unset materials
- E01C19/30—Tamping or vibrating apparatus other than rollers ; Devices for ramming individual paving elements
- E01C19/34—Power-driven rammers or tampers, e.g. air-hammer impacted shoes for ramming stone-sett paving; Hand-actuated ramming or tamping machines, e.g. tampers with manually hoisted dropping weight
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Civil Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Agronomy & Crop Science (AREA)
- Architecture (AREA)
- Soil Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- General Engineering & Computer Science (AREA)
- Road Paving Machines (AREA)
- Machines For Laying And Maintaining Railways (AREA)
Abstract
The invention provides a hydraulic tamping device and a hydraulic tamping machine, and belongs to the field of engineering machinery. The hydraulic tamping device comprises a machine shell, a hydraulic oil cylinder, a tamping hammer and a tamping plate; the hydraulic oil cylinder is positioned in the shell and is hinged with one end of the shell, and the tamper plate is fixedly arranged at the other end; the rammer is positioned between the hydraulic oil cylinder and the rammer plate, one side of the rammer, which is close to the hydraulic oil cylinder, is provided with a T-shaped groove, the T-shaped groove comprises a sliding cavity and a limiting cavity which are mutually communicated, and the limiting cavity is positioned inside the rammer; the hydraulic oil cylinder is provided with a piston rod, the piston rod comprises a rod body, a first step portion and a second step portion, the first step portion and the second step portion are fixedly connected with the rod body, part of the rod body extends into the rammer and is in clearance fit with the sliding cavity, the sliding cavity is located between the first step portion and the second step portion, and the hydraulic oil cylinder is used for driving the rammer to contact or keep away from the rammer plate. The hydraulic tamping device is reasonable in structure, and the impact force applied to the piston rod and the rammer is effectively relieved.
Description
Technical Field
The invention relates to the field of engineering machinery, in particular to a hydraulic tamping device and a hydraulic tamping machine.
Background
The operation mode of the hydraulic tamper can be divided into a free drop hammer type and a forced drop hammer type, wherein the free drop hammer type (single action): the hydraulic cylinder lifts the hammer body to a set height and then releases the hammer body, and the hammer body falls freely; after falling down, the hammer body strikes the assembly of the lower hammer body and the tamping plate through the hammer pad, and the tamping plate is driven to compact the ground. Forced drop hammer (double action): the hydraulic cylinder lifts the hammer body to a set height and then rapidly applies force in a reverse direction, and the hammer body is accelerated to fall under the combined action of gravity and the thrust of the hydraulic cylinder; after falling down, the hammer body strikes the assembly of the lower hammer body and the tamping plate through the hammer pad, and the tamping plate is driven to compact the ground.
At present, the piston rod and the rammer of the existing hydraulic rammer compactor are easy to damage, the replacement frequency and the replacement cost are high, and the hydraulic rammer compactor is not beneficial to long-term use.
Disclosure of Invention
The invention aims to provide a hydraulic compaction device which is reasonable in structure, wherein a piston rod and a rammer are subjected to smaller impact force, are not easy to damage, are low in maintenance cost and are beneficial to long-term use of a hydraulic compaction machine.
Another object of the present invention is to provide a hydraulic tamper having the advantages of the above-described hydraulic tamping device.
The embodiment of the invention is realized by the following steps: a hydraulic tamping device comprises a machine shell, a hydraulic oil cylinder, a tamping hammer and a tamping plate;
the hydraulic oil cylinder is positioned in the casing and is hinged with one end of the casing, and the tamping plate is fixedly arranged at the other end of the casing;
the rammer is positioned between the hydraulic oil cylinder and the ramming plate, one side of the rammer, which is close to the hydraulic oil cylinder, is provided with a T-shaped groove, the T-shaped groove comprises a sliding cavity and a limiting cavity which are mutually communicated, and the limiting cavity is positioned inside the rammer;
the hydraulic oil cylinder is provided with a piston rod, the piston rod comprises a rod body, a first step part and a second step part, the first step part and the second step part are fixedly connected with the rod body, part of the rod body extends into the rammer and is in clearance fit with the sliding cavity, and the sliding cavity is positioned between the first step part and the second step part;
the hydraulic oil cylinder is used for driving the rammer to contact or be far away from the ramming plate.
In an optional embodiment of the present invention, the piston rod further includes a first inclined portion and a second inclined portion, which are oppositely disposed, the first inclined portion is fixedly connected to the first step portion, the second inclined portion is fixedly connected to the second step portion, the second step portion is located in the limiting cavity, and the first inclined portion and the second inclined portion are located between the first step portion and the second step portion;
the both ends that T type groove with the sliding cavity corresponds form first inclined plane and second inclined plane, first inclined plane is close to first rake just with the surface of first rake is parallel, the second inclined plane is close to the second rake just with the surface of second inclined plane is parallel.
In an optional embodiment of the invention, the rammer is provided with a first groove, the first groove is communicated with the limiting cavity and is positioned on one side of the limiting cavity, which is far away from the hydraulic oil cylinder, and the first groove is matched with the second step part.
In an optional embodiment of the invention, a plurality of guide holes are formed in one side, close to the ramming plate, of the ramming hammer, guide columns corresponding to the guide holes in a one-to-one mode are fixedly arranged on one side, close to the ramming hammer, of the ramming plate, and the guide holes and the guide columns are in clearance fit.
In an optional embodiment of the invention, the guide hole is a stepped hole, the stepped hole comprises a first hole and a second hole, the aperture of the first hole is smaller than that of the second hole, the first hole is close to the tamper plate, a spring is arranged in the second hole, the spring is sleeved outside the guide post, and the spring is respectively abutted against two ends of the second hole.
In an optional embodiment of the invention, a second groove is formed in one side of the ramming plate close to the ramming hammer, and the second groove is matched with one side of the ramming hammer close to the ramming plate.
In an optional embodiment of the present invention, a buffer member is disposed in the second groove.
In an optional embodiment of the invention, the buffer member forms a plurality of concave parts which are concave towards the inside of the tamping plate, second convex parts which correspond to the concave parts one by one are formed on one side of the rammer close to the tamping plate, and the concave parts are matched with the second convex parts.
In an optional embodiment of the present invention, a limiting portion is formed on an inner surface of the casing close to the tamper plate, the tamper plate has a first protruding portion, and the first protruding portion is embedded in the limiting portion.
The embodiment of the invention also provides a hydraulic tamper, which comprises the hydraulic tamper device.
The embodiment of the invention has the beneficial effects that: this hydraulic compaction device's rational in infrastructure, novel in design, the impact force that piston rod and ram therein received is effectively alleviated, has reduced piston rod and ram by damaged risk at the tamping ground in-process, and simultaneously, the vibration between ram and the ram is little, has further protected ram and ram, has reduced the maintenance cost.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a schematic structural diagram of a hydraulic compaction apparatus provided in an embodiment of the present invention;
FIG. 2 is a schematic view of the piston rod of FIG. 1;
FIG. 3 is a schematic structural view of the rammer of FIG. 1;
FIG. 4 is a schematic illustration of the construction of the tamper plate of FIG. 1.
Icon: 110-a housing; 111-a limiting part; 120-a hydraulic cylinder; 130-a piston rod; 131-a shaft body; 132-a first step; 133-a first inclined portion; 134-a second inclined portion; 135-a second step; 140-a ram; 141-a sliding cavity; 1411-a first inclined surface; 1412-second inclined surface; 142-a spacing cavity; 143-a first groove; 144-a stepped bore; 1441 — first hole; 1442 — second hole; 150-a tamper plate; 151-second groove; 152-a first boss; 160-guide posts; 170-a spring; 180-a second boss; 190-a buffer; 191-a recess.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined or explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inside", "outside", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships conventionally put in use of products of the present invention, and are only for convenience of description and simplification of description, but do not indicate or imply that the devices or elements referred to must have specific orientations, be constructed in specific orientations, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should also be noted that, unless otherwise explicitly stated or limited, the terms "disposed," "connected" and "connected" are to be construed broadly, and may be, for example, 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 in specific cases to those skilled in the art.
Example 1
Referring to FIG. 1, an embodiment of the present invention provides a hydraulic compaction apparatus that includes a housing 110, a hydraulic cylinder 120, a ram 140, and a ram plate 150.
In this embodiment, the housing 110 is mainly quadrangular, and has a hollow interior.
Referring to fig. 1, a hydraulic cylinder 120 is located in the housing 110, the hydraulic cylinder 120 has a piston rod 130, and an end of the hydraulic cylinder 120 away from the piston rod 130 is hinged to the housing 110, where the hinge may be a hinge.
Thus, one end of the housing 110 is hinged to the hydraulic cylinder 120 and the other end of the housing 110 is connected to the tamper plate 150.
The ram 140 is located between the hydraulic cylinder 120 and the ram 150, and the ram 140 is connected to the hydraulic cylinder 120 and the ram 150, respectively.
Thus, ram 140 can be driven into and out of contact with ram 150 by hydraulic cylinder 120, and when ram 140 is in contact with ram 150, ram 140 transfers the power output by hydraulic cylinder 120 to ram 150 to tamp the ground.
In this embodiment, a T-shaped groove is formed on one side of the ram 140 close to the hydraulic cylinder 120, and the T-shaped groove includes a sliding cavity 141 and a limiting cavity 142 that are communicated with each other.
The sliding cavity 141 is close to the hydraulic cylinder 120 relative to the limiting cavity 142, and the sliding cavity 141 extends in the radial direction of the hydraulic cylinder 120, and in summary, the limiting cavity 142 is located inside the ram 140, where the sliding cavity 141 may be cylindrical or prismatic, and the limiting cavity 142 is selected to be prismatic.
Referring to fig. 2, the piston rod 130 includes a rod body 131, a first stepped portion 132, and a second stepped portion 135.
With reference to fig. 2 and 3, a part of the rod body 131 extends into the ram 140 and is in clearance fit with the sliding cavity 141, the ram 140 may be formed by two parts, the cross-sectional direction shown in fig. 1 is used as an interface to facilitate the assembly of the piston rod 130, the first step portion 132 and the second step portion 135 are respectively fixedly connected with the rod body 131, the second step portion 135 is flush with one end of the rod body 131 far away from the hydraulic oil cylinder 120, the first step portion 132 and the second step portion 135 respectively extend along the radial direction of the rod body 131, the first step portion 132 and the second step portion 135 may be rectangular or circular, and the first step portion 132 and the second step portion 135 may be connected with the rod body 131 by welding.
It should be noted that, the sliding cavity 141 is displaced between the first step portion 132 and the second step portion 135, taking the sliding cavity 141, the first step portion 132 and the second step portion 135 as an example, which are all cylindrical, the diameter of the sliding cavity 141 is smaller than the diameter of the first step portion 132 and the diameter of the second step portion 135, so that the sliding cavity 141 is always located between the first step portion 132 and the second step portion 135; meanwhile, the second step part 135 is located on the side of the limiting cavity 142 far away from the sliding cavity 141, so that the second step part 135 is close to the bottom surface of the T-shaped groove.
In order to reduce the impact force of the piston rod 130 on the rammer 140, as shown in fig. 2 and 3, in the present embodiment, the piston rod 130 further includes a first inclined portion 133 and a second inclined portion 134 which are oppositely disposed, wherein the first inclined portion 133 and the second inclined portion 134 are each in the shape of a circular truncated cone, which axially penetrates through, and which axially penetrates through the rod body 131, and the first inclined portion 133 and the second inclined portion 134 are respectively engaged with the rod body 131, and thus it can be known that the cross section of the first inclined portion 133 and the cross section of the second inclined portion 134 in the vertical direction are triangular, and the first inclined portion 133 and the second inclined portion 134 each have an inclined surface.
The first inclined part 133 and the first stepped part 132 are fixedly connected, the second inclined part 134 and the second stepped part 135 are fixedly connected, the second stepped part 135 is located in the limiting cavity 142, and the first inclined part 133 and the second inclined part 134 are located between the first stepped part 132 and the second stepped part 135.
As shown in fig. 2 and 3, the first inclined surface 1411 and the second inclined surface 1412 are formed at both ends of the T-shaped groove corresponding to the sliding chamber 141, respectively.
The first inclined surface 1411 is close to the first inclined portion 133 and parallel to the surface of the first inclined portion 133, and the second inclined surface 1412 is close to the second inclined portion 134 and parallel to the surface of the second inclined surface 1412, in other words, when the first inclined portion 133 is close to the hammer ram 140, the first inclined portion 133 is gradually attached to the first inclined surface 1411, the distance between the second inclined portion 134 and the second inclined surface 1412 is increased, and when the first inclined portion 133 is far away toward the hammer ram 140, the first inclined portion 133 is gradually detached from the first inclined surface 1411, and the second inclined portion 134 is directly attached to the second inclined surface 1412.
When the piston rod 130 of the hydraulic oil cylinder 120 extends out, the first inclined part 133 and the first inclined surface 1411 are gradually separated to be attached, so that the impact force of the piston rod 130 on the rammer 140 is reduced, and when the piston rod 130 of the hydraulic oil cylinder 120 is retracted, the second inclined part 134 and the second inclined surface 1412 are gradually separated to be attached, so that the impact force between the piston rod 130 and the rammer 140 is relieved, and the protection of the rammer 140 and the piston rod 130 is facilitated.
When the piston rod 130 extends out, in order to enable the piston rod 130 and the ram 140 to be tightly attached, the ram 140 is provided with a first groove 143, the first groove 143 is a rectangular groove, the first groove 143 is communicated with the limiting cavity 142, the first groove 143 is located at the advantage of the limiting cavity 142 far away from the hydraulic oil cylinder 120, and the first groove 143 is matched with the second step part 135 and the whole formed by the rod body 131.
Wherein, a buffer pad, for example, a rubber pad, can be disposed in the first groove 143 to reduce the impact force of the piston rod 130 on the ram 140.
Referring to fig. 1 and 3, in order to ensure that the rammer 140 and the ram 150 can always move relatively in the same direction, that is, the center line of the rammer 140 and the center line of the ram 150 are always kept collinear, a plurality of guide holes are formed in one side of the rammer 140 close to the ram 150, the guide holes are uniformly distributed on the rammer 140, guide posts 160 corresponding to the guide holes one by one are fixedly arranged on one side of the ram 150 close to the rammer 140, a certain gap is formed between the guide posts 160 and one side of the guide holes close to the hydraulic cylinder 120, so as to avoid interference of the guide posts 160 on up and down movement of the rammer 140, and the guide holes and the guide posts 160 are in clearance fit; furthermore, a guide post 160 may be provided on the side of the ram 140 adjacent to the ram 150, and a guide hole may be provided on the side of the ram 150 adjacent to the ram 140; the rammer 140 and the rammer plate 150 can be always kept perpendicular by the two methods, so that the rammer plate 150 is stressed more uniformly, and the rammer plate 150 or the rammer 140 is prevented from being damaged due to excessive local stress.
To further reduce the impact force between ram 140 and ram plate 150, the guide hole is a stepped hole 144.
As shown in fig. 1 and 3, the stepped hole 144 includes a first hole 1441 and a second hole 1442, and the first hole 1441 and the second hole 1442 communicate with each other.
The aperture of the first hole 1441 is smaller than that of the second hole 1442, the first hole 1441 is close to the tamper 150, the spring 170 is arranged in the second hole 1442, the spring 170 is sleeved outside the guide post 160, one end of the spring 170 abuts against the upper end face of the second hole 1442, and the other end of the spring 170 abuts against the lower end face of the second hole 1442, so that when the tamper 140 is close to the tamper 150 under the driving of the hydraulic oil cylinder 120, the spring 170 is compressed to generate a reaction force, the vibration of the tamper 140 on the tamper 150 is favorably slowed down, and when the tamper 140 is far away from the tamper 150 under the driving of the hydraulic oil cylinder 120, the spring 170 recovers deformation, and the tamper 140 returns to an initial position.
In this embodiment, a second groove 151 is formed on a side of the tamper plate 150 close to the ram 140, and the second groove 151 is a rectangular groove, wherein the second groove 151 is matched with the side of the ram 140 close to the tamper plate 150, that is, when the ram 140 contacts the tamper plate 150, the side of the ram 140 close to the tamper plate 150 is located in the second groove 151.
Referring to fig. 1, a buffer 190 is disposed in the second groove 151, the buffer 190 may be a rubber pad, the size of the buffer 190 is adapted to the size of the second groove 151, so that the buffer 190 completely covers the bottom surface of the second groove 151, and meanwhile, the buffer 190 is formed with a plurality of recesses 191 recessed into the inside of the tamper 150, the recesses 191 are uniformly distributed on the buffer 190, and may be distributed in a rectangular or annular array, and at the same time, second protrusions 180 corresponding to the recesses 191 are formed on one side of the ram 140 close to the tamper 150, where the correspondence is that the shape, position and size of the second protrusions 180 are adapted to the recesses 191, so that when the ram 140 is driven by the hydraulic cylinder 120 to be close to the tamper 150, the second protrusions 180 gradually fit the recesses 191, and vibration between the ram 140 and the tamper 150 is reduced under the effect of the buffer 190, thereby facilitating protection of the ram 140 and the tamper 150, prolonging the life of the ram 140 and reducing maintenance cost.
Referring to fig. 1 and 4, in addition, a limiting portion 111 is formed on an inner surface of the casing 110 close to the tamper plate 150, the limiting portion 111 may be distributed on four sides of a bottom of the casing 110, the tamper plate 150 has a first protruding portion 152, the first protruding portion 152 corresponds to the limiting portion 111 one to one, and the first protruding portion 152 is embedded in the limiting portion 111, wherein the casing 110 may be divided into two parts to facilitate assembly of the tamper plate 150.
In conclusion, the hydraulic compaction device effectively reduces the vibration effect between the piston rod 130 and the ram 140 and between the ram 140 and the tamper plate 150 through the separation and attachment between the first inclined portion 133 and the first inclined surface 1411 and the separation and attachment between the second inclined portion 134 and the second inclined surface 1412 under the action of the spring 170 and the buffer member 190, and plays an active protection role on the piston rod 130, the ram 140 and the tamper plate 150, thereby being beneficial to the long-term use of the hydraulic compaction device and effectively reducing the maintenance cost.
Example 2
The embodiment of the invention also provides a hydraulic tamper, which comprises a loader, a frame and the hydraulic tamper device, wherein the loader is connected with the shell 110 of the hydraulic tamper device through the frame.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. A hydraulic tamping device is characterized by comprising a machine shell, a hydraulic oil cylinder, a tamping hammer and a tamping plate;
the hydraulic oil cylinder is positioned in the casing and is hinged with one end of the casing, and the tamping plate is fixedly arranged at the other end of the casing;
the rammer is positioned between the hydraulic oil cylinder and the ramming plate, one side of the rammer, which is close to the hydraulic oil cylinder, is provided with a T-shaped groove, the T-shaped groove comprises a sliding cavity and a limiting cavity which are mutually communicated, and the limiting cavity is positioned inside the rammer;
the hydraulic oil cylinder is provided with a piston rod, the piston rod comprises a rod body, a first step part and a second step part, the first step part and the second step part are fixedly connected with the rod body, part of the rod body extends into the rammer and is in clearance fit with the sliding cavity, and the sliding cavity is positioned between the first step part and the second step part;
the hydraulic oil cylinder is used for driving the rammer to contact or be far away from the rammer plate;
the piston rod further comprises a first inclined part and a second inclined part which are oppositely arranged, the first inclined part is fixedly connected with the first step part, the second inclined part is fixedly connected with the second step part, the second step part is positioned in the limiting cavity, and the first inclined part and the second inclined part are positioned between the first step part and the second step part;
a first inclined surface and a second inclined surface are formed at two ends of the T-shaped groove corresponding to the sliding cavity, the first inclined surface is close to the first inclined part and is parallel to the surface of the first inclined part, and the second inclined surface is close to the second inclined part and is parallel to the surface of the second inclined part;
a plurality of guide holes are formed in one side, close to the ramming plate, of the ramming hammer, guide columns which correspond to the guide holes one by one are fixedly arranged on one side, close to the ramming hammer, of the ramming plate, and the guide holes are in clearance fit with the guide columns;
the guiding hole is a stepped hole, the stepped hole comprises a first hole and a second hole, the aperture of the first hole is smaller than that of the second hole, the first hole is close to the tamping plate, a spring is arranged in the second hole, the spring is sleeved on the outer side of the guiding column, and the spring is respectively abutted to the two ends of the second hole.
2. The hydraulic compaction device of claim 1, wherein the ram is provided with a first groove that communicates with the limiting cavity and is located on a side of the limiting cavity away from the hydraulic cylinder, the first groove mating with the second step.
3. The hydraulic compaction device of claim 1, wherein a side of the plate closer to the ram defines a second recess that mates with a side of the ram closer to the plate.
4. The hydraulic compaction device according to claim 3, wherein a buffer is provided in the second groove.
5. The hydraulic compaction device according to claim 4, wherein the buffer member forms a plurality of concave portions that are concave toward the inside of the tamper plate, and second convex portions that correspond one-to-one to the concave portions are formed on one side of the rammer that is close to the tamper plate, and the concave portions are engaged with the second convex portions.
6. The hydraulic compaction device according to claim 1, wherein a limit portion is formed on an inner surface of the housing near the tamper plate, and the tamper plate has a first protrusion portion embedded in the limit portion.
7. A hydraulic tamper characterized by comprising the hydraulic tamping device according to any one of claims 1 to 6.
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| CN201710302581.8A CN106930267B (en) | 2017-05-03 | 2017-05-03 | Hydraulic tamping device and hydraulic tamping machine |
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| CN201710302581.8A CN106930267B (en) | 2017-05-03 | 2017-05-03 | Hydraulic tamping device and hydraulic tamping machine |
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| CN107558467B (en) * | 2017-10-25 | 2018-07-31 | 深圳市市政工程总公司 | A kind of working tamping unit of road rapid repair |
| CN108457264B (en) * | 2018-05-07 | 2023-09-29 | 华中科技大学 | Ramming device and ramming method |
| CN110055949A (en) * | 2019-05-31 | 2019-07-26 | 江苏科技大学 | A kind of novel reinforcement mechanism |
| CN110130311B (en) * | 2019-06-12 | 2024-02-13 | 沙洲职业工学院 | Dynamic compaction hammer head with increasing lifting force requirement |
| CN111997033B (en) * | 2020-08-10 | 2022-05-17 | 安徽环达建设工程技术有限公司 | Mounting method of tamping device of hydraulic tamper |
| CN112095383B (en) * | 2020-09-30 | 2023-10-31 | 广东建工德晟工程有限公司 | Roadbed tamping device |
| CN115233649B (en) * | 2022-08-31 | 2023-11-10 | 中国路桥工程有限责任公司 | Hydraulic rammer compactor for reinforcing large-area foundation soil |
| CN118127879B (en) * | 2024-05-06 | 2024-07-23 | 河南远辰祥建设工程有限公司 | Compacting equipment for paving hydraulic engineering pavement |
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| CN203066053U (en) * | 2012-11-05 | 2013-07-17 | 上海朗信基础设备制造有限公司 | Hydraulic tamper for hammer hoisting device |
| CN203034438U (en) * | 2013-01-04 | 2013-07-03 | 浙江志高机械有限公司 | Hydraulic high-speed tamping damping structure |
| CN206800364U (en) * | 2017-05-03 | 2017-12-26 | 中交一公局第三工程有限公司 | Hydraulic pressure tamping unit and hydraulic pressure beater |
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| CN106930267A (en) | 2017-07-07 |
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