CN108252304B - Electric impact pile driving hammer - Google Patents
Electric impact pile driving hammer Download PDFInfo
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- CN108252304B CN108252304B CN201611251216.0A CN201611251216A CN108252304B CN 108252304 B CN108252304 B CN 108252304B CN 201611251216 A CN201611251216 A CN 201611251216A CN 108252304 B CN108252304 B CN 108252304B
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- cylinder
- winch drum
- power box
- pile
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- 230000007246 mechanism Effects 0.000 claims abstract description 25
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- 238000010521 absorption reaction Methods 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract description 9
- 238000005381 potential energy Methods 0.000 abstract description 6
- 229910000831 Steel Inorganic materials 0.000 description 9
- 239000010959 steel Substances 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 8
- 230000005540 biological transmission Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 4
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- 235000017166 Bambusa arundinacea Nutrition 0.000 description 3
- 235000017491 Bambusa tulda Nutrition 0.000 description 3
- 241001330002 Bambuseae Species 0.000 description 3
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 3
- 230000009471 action Effects 0.000 description 3
- 239000011425 bamboo Substances 0.000 description 3
- 238000010009 beating Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 230000000875 corresponding effect Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000005484 gravity Effects 0.000 description 2
- 239000010720 hydraulic oil Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
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- 230000001105 regulatory effect Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000003245 working effect Effects 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D7/00—Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds
- E02D7/02—Placing by driving
- E02D7/06—Power-driven drivers
- E02D7/08—Drop drivers with free-falling hammer
Abstract
The invention provides an electric impact pile hammer which comprises an operation table, a control cabinet, a power supply and a hammer body, wherein the hammer body comprises a hammer barrel, a power box is arranged at the upper end of the hammer barrel, a hammer core capable of axially moving is arranged in the hammer barrel, the power box comprises a driving mechanism and a winch drum driven by the driving mechanism, a cable is arranged on the winch drum and is connected with the hammer core, the operation table controls the power supply to supply electric energy for the power box through the control cabinet, a mounting plate is arranged at the upper part of the hammer barrel, and the power box is arranged on the mounting plate. According to the invention, the winch drum is driven by the variable frequency motor so as to lift the hammer core, the hammer core is released rapidly when reaching the preset height, and the hammer core falls freely to impact piling, so that the electric energy of the power grid is converted into piling impact potential energy. The invention can meet the domestic requirements of offshore wind power construction and cross-sea bridge construction and has high practicability.
Description
Technical Field
The invention relates to foundation pile construction machinery, in particular to an electric impact pile hammer.
Background
Pile foundation construction is often required in the fields of engineering machinery, ocean engineering equipment, offshore wind power, cross-sea bridges and the like. The construction of pile foundations depends on equipment such as pile hammers.
At present, the construction of the wind power pile foundation at home and abroad generally uses an impact pile driving hammer and a vibrating hammer. The impact pile hammer comprises a cylinder type diesel pile hammer and a hydraulic impact pile hammer; the vibrating hammer is provided with a hydraulic vibrating hammer and an electric vibrating hammer, is generally used for pile stabilization stage of pile planting by hanging and is less in use when the steel pipe pile and the steel sheet pile are inserted and pulled out.
At present, most of the domestic offshore wind power pile foundations are small-diameter pile groups, the diameter of the steel pipe piles is about 1.5 m, the weight of the steel pipe piles is about 150 tons, the pile length is about hundred m, and the pile construction can be completed by the cylinder type diesel pile hammer D200 and D260 and the hydraulic impact pile hammer S800. The advanced offshore wind power pile foundations at home and abroad are transited from small-diameter (about phi 1 m) pile group foundations to medium-diameter (about phi 3 m) pile group foundations, and the transition to large-diameter (about phi 5 m-phi 8 m) single pile foundations is also caused in the future. The transition from offshore wind power pile foundations to low-cost and high-efficiency single pile foundations is a trend, in order to drive medium-diameter steel pipe piles, a hydraulic impact pile driving hammer S2400 is developed abroad, the maximum impact energy of the hydraulic impact pile driving hammer S2400 reaches 2400KJ, wind power pile foundations phi 3 m-phi 4m steel pipe piles can be driven, and hydraulic impact pile driving hammers capable of driving larger-diameter steel pipe piles (phi 5 m-phi 8 m) are being developed. The cylinder type diesel pile hammer has the advantages that the technology is mature, the use cost is low, the technology is basically at the same technical level at home and abroad, the production enterprises are more, but at present, the pile hammer with the impact part mass of 30000kg (which is equivalent to about 600KJ of effective impact energy) can only be produced at home and abroad, the impact energy is small, the pile cannot be driven, the development of the large hammer encounters technical bottlenecks of materials, processes and the like, and the short-term at home and abroad cannot break through. The hydraulic impact pile hammer is advanced in technology, the key technology of the hydraulic impact pile hammer at present is mainly mastered by developed enterprises abroad, and the maximum impact energy of the hydraulic impact pile hammer can be produced at present to 2400 KJ. The hydraulic impact pile hammer in China has a quite large gap from the advanced technology in China, only small hammers below 600KJ can be developed, huge benefits are obtained by monopolizing the technology in China, and the use cost of the large hammers is extremely high. Therefore, the improvement of the technical level of the domestic piling hammer is needed to be solved by technicians.
Disclosure of Invention
The invention aims to solve the technical problem of providing an electric impact pile hammer with large impact energy and good working effect so as to overcome the defects in the prior art.
In order to solve the technical problems, the invention adopts the following technical scheme: the utility model provides an electronic impact pile hammer, includes operation panel, switch board, power and hammer block, the hammer block includes a hammer section of thick bamboo, and a hammer section of thick bamboo upper end is equipped with the headstock, is equipped with the hammer core that can axial displacement in the hammer section of thick bamboo, the headstock includes actuating mechanism and the winch cylinder through actuating mechanism driven, be equipped with the hawser on the winch cylinder, the hawser is connected with the hammer core, the operation panel provides the electric energy for the headstock through switch board control power.
Preferably, a mounting plate is arranged at the upper part of the hammer cylinder, and the power box is arranged on the mounting plate.
Further, the winch is characterized by further comprising a rotating shaft rotatably arranged on the mounting plate, the winch drum is sleeved on the rotating shaft, the driving mechanism comprises a motor, a pinion, a large gear and a clutch disc, the pinion is connected with the rotating shaft of the motor, the pinion is meshed with the large gear, the large gear is arranged on the rotating shaft, the clutch disc is sleeved on the winch drum and can only axially move along the winch drum through a telescopic mechanism, and the clutch disc and the large gear can be adsorbed together through magnetic poles.
Further, telescopic machanism includes pneumatic cylinder, jackshaft, pulls out round pin and chuck, open along the axis the tip of pivot has the blind hole, open along the axial the pivot with the elongated slot of blind hole intercommunication, the pneumatic cylinder is installed on the mounting panel, the jackshaft is arranged in the blind hole, pull out the round pin and wear to establish in the elongated slot, the one end of jackshaft is connected with the piston rod of pneumatic cylinder through thrust bearing, and the other end is connected with pulls out the round pin, pull out the round pin and press on the clutch disc through the chuck.
Further, the driving mechanism and the telescopic mechanism are respectively arranged at two ends of the rotating shaft.
Further, a backrest disc is fixedly sleeved on the winch drum, and the clutch disc can be propped against the backrest disc when moving.
Further, a bearing is sleeved on the winch drum, the bearing is installed on a bearing seat, and the bearing seat is installed on the installation plate.
Preferably, the outer wall of the hammer cylinder is provided with at least two groups of guide pins along the axial direction, and each group of guide pins is provided with two guide pins and is arranged in parallel in the horizontal direction.
Preferably, the power supply is electrically connected with the power box through a frequency converter.
Preferably, the lower end of the hammer core is recessed inwards along the circumferential direction to form an annular step, the lower end of the hammer cylinder is provided with a limiting ring corresponding to the annular step in position, and the top surface of the limiting ring is provided with a buffer cushion.
As described above, the electric impact pile hammer has the following beneficial effects:
the working principle of the invention is that the winch drum is driven by the variable frequency motor so as to lift the hammer core, the hammer core is released rapidly when reaching the preset height, the hammer core falls freely to impact piling, and the electric energy of the power grid is converted into piling impact potential energy. The invention avoids the technical bottleneck that the cylinder type diesel pile hammer cannot break through in a short period, does not adopt foreign monopoly technology, adopts mature electric transmission technology to manufacture the electric impact pile hammer with the maximum impact energy of 4000KJ, meets the domestic requirements of offshore wind power construction and cross-sea bridge construction, has wide market prospect, and can create great economic benefit.
The invention adopts electric power as power, is simple, efficient and environment-friendly; and the energy transmission path of the electric impact pile hammer is simplified, the efficiency is high, the production cost is low, and the cost performance is high.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is A-A view of fig. 1.
Fig. 3 is a partial view of B-B of fig. 1.
Fig. 4 is a view at C-C in fig. 2.
Fig. 5 is a view at D-D in fig. 2.
Fig. 6 is a schematic diagram of the transmission and clutch principle structure in the present invention.
Fig. 7 is a view showing the state of use of the present invention.
In the figure:
1. control cabinet of operating table 2
3. Power supply 4 hammer cylinder
5. Power box 6 hammer core
7. Mounting plate for telescopic mechanism 41
42. Guide leg of rotating shaft 43
421. Bearing seat 45 buffer cushion
51. Driving mechanism 52 winch drum
521. Bearing pedestal 53 cable
511. Motor 512 pinion
513. Gear wheel 514 clutch disc
515. Annular groove of backrest disc 61
7. Hydraulic cylinder of telescopic mechanism 71
72. Intermediate shaft 73 pin
74. Chuck 81 tibeaten piece
82. Steel pipe pile 83 guide leg
84. Pile frame guide 44 limiting ring
Detailed Description
The structures, proportions, sizes, etc. shown in the drawings are shown only in connection with the disclosure of the present invention, and are not intended to limit the scope of the invention, which is defined by the claims, but rather by the terms of modification, variation of proportions, or adjustment of sizes, without affecting the efficacy or achievement of the present invention, should be construed as falling within the scope of the present invention. Also, the terms such as "upper", "lower", "front", "rear", "middle", and the like are used herein for descriptive purposes only and are not intended to limit the scope of the invention for which the invention may be practiced or for which the relative relationships may be altered or modified without materially altering the technical context.
As shown in fig. 1-6, the invention discloses an electric impact pile hammer, which comprises an operation table 1, a control cabinet 2, a power supply 3 and a hammer body, wherein the hammer body comprises a hammer cylinder 4, a power box 5 is arranged at the upper end of the hammer cylinder 4, a hammer core 6 capable of axially moving is arranged in the hammer cylinder 4, the power box 5 comprises a driving mechanism 51 and a winch drum 52 driven by the driving mechanism 51, a cable 53 is arranged on the winch drum 52, and the cable 53 is connected with the hammer core 6. The operation desk 1 controls the power supply 3 to provide electric energy for the power box 5 through the control cabinet 2, the electric energy is conveyed through a cable, and the cable not only conveys power electric energy but also conveys control signals. The hammer body converts electric energy into impact potential energy of the hammer core 6, so that impact piling is realized. The operation desk 1 and the control cabinet 2 are used for transmitting and converting operation instructions into corresponding actions, acquiring action signals and safety signals and feeding back the action signals and the safety signals to operators, and properly and automatically controlling the operation desk. The basic principle of the invention is as follows: the power supply 3 drives the winch drum 52 to lift the hammer core 6, the hammer core 6 is released rapidly when reaching a preset height, and the hammer core 6 falls freely to impact piling, so that the electric energy of the power grid is converted into piling impact potential energy.
To facilitate the installation of the power box 5, referring to fig. 5, a mounting plate 41 is provided at the upper portion of the hammer cylinder, and the power box 5 is disposed on the mounting plate 41. The invention also comprises a rotating shaft 42 rotatably arranged on the mounting plate 41, bearings are arranged at two ends of the rotating shaft 42 and are arranged on bearing seats 421, and the bearing seats are fixed on the mounting plate 41. The winch drum 52 is sleeved on the rotating shaft 42. Referring to fig. 3 and 6, the driving mechanism 51 in this embodiment includes a motor 511, a pinion 512, a large gear 513, and a clutch disc 514, where the pinion 512 is connected to a motor shaft, the pinion 512 is meshed with the large gear 513, the large gear 513 is mounted on the shaft 42, and the clutch disc 514 is sleeved on the winch drum 52 and can only move axially along the winch drum 52 through the telescopic mechanism 7, specifically, the clutch disc 514 is spline-engaged with the winch drum 52. The clutch plate 514 and the large gear 513 can be attracted together by magnetic poles, and in this embodiment, the magnetic poles are arranged on the large gear 513, and after the large gear 513 is electrified, the magnetic poles can exert a strong attraction effect on the clutch plate 514. That is, the clutch plate 514 in the invention has two stations, one is a combining station which is adsorbed with the large gear 513, and the other is a separating station which is separated from the large gear 513, when the clutch plate 514 is at the combining station, the large gear 513 and the clutch plate 514 synchronously move, the motor 511 transmits power to the large gear 513 after reducing the speed through the small gear 512, and the clutch plate 514 synchronously rotates with the rotating shaft 42 with the winch drum 52, thereby realizing the lifting of the hammer core 6 by the cable 53. When the clutch plate 514 is in the separating station, the winch drum 52 can rotate freely relative to the rotating shaft 42, and further rotate reversely, and the hammer core 6 falls down quickly to impact the pile body.
As shown in fig. 3 and 6, the telescopic mechanism 7 in the invention comprises a hydraulic cylinder 71, an intermediate shaft 72, a pull pin 73 and a chuck 74, wherein a blind hole is formed at the end of the rotating shaft 42 along the axis, a long groove communicated with the blind hole is formed in the rotating shaft 42 along the axial direction, the hydraulic cylinder 71 is installed on the mounting plate 41, the intermediate shaft 72 is positioned in the blind hole, the pull pin 73 is arranged in the long groove in a penetrating manner and can move in the long groove along the axial direction, one end of the intermediate shaft 72 is connected with a piston rod of the hydraulic cylinder 71 through a thrust bearing, the other end of the intermediate shaft is connected with the pull pin 73, and the pull pin 73 is pressed against the clutch plate 514 through the chuck 74.
In combination with the above, the transmission process and principle of the clutch part in the invention are as follows: the motor 511 rotates in a directional manner, the pinion 512 is meshed with the large gear 513 on the rotating shaft 42 to form a gear reduction transmission, and the large gear 513 drives the rotating shaft 42, the intermediate shaft 72 and the poking pin 73 to rotate together. When the control signal retracts the piston rod of the hydraulic cylinder 71, it pulls the intermediate shaft 72 and the shift pin 73 to move outwards, the shift pin 73 pulls the chuck 74 and the clutch plate 514 to move outwards together, so that the clutch plate 514 is pressed against the large gear 513 and rotates together with the large gear 513, the clutch plate 514 rotates, the winch drum 52 rotates, the cable 53 is wound up, and the hammer core 6 moves upwards. When reaching the preset height, the control signal makes the piston rod of the hydraulic cylinder 71 extend to push the intermediate shaft 72 and the poking pin 73 to move inwards, the poking pin 73 pushes the chuck 74 and the clutch disc 514 to move inwards together to enable the clutch disc 514 to be separated from the end face of the large gear 513, the clutch disc 514 and the winch drum 52 are reversed under the gravity action of the hammer core 6, the cable 53 is rapidly released, the hammer core 6 falls freely to impact and pile, and after the hammer core 6 impacts, the control signal makes the piston rod of the hydraulic cylinder 71 retract again to perform the next cycle.
When the control cabinet 2 receives the hammer stopping signal, the clutch plate 514 is firstly separated from the end face of the large gear 513 through the hydraulic oil cylinder 71, and the separated state is kept, so that the motor 511 is powered off and stopped, and preparation is made for the next starting.
When the control cabinet 2 detects the pile slipping signal, in order to avoid the impact overload of the transmission system components, the clutch disc 514 is firstly disconnected from the end face of the large gear 513 through the hydraulic oil cylinder 71, and the motor 511 is kept in the disconnected state, so that the operator waits for recovering the pile slipping signal.
As shown in fig. 3 and 6, the driving mechanism 51 and the telescopic mechanism 7 are provided at both ends of the rotation shaft 42, respectively, in order to ensure stable and orderly operation. Since the motor 511 used in the present invention is a high-power motor, it is difficult to start the motor 511, and thus the motor 511 is controlled by a frequency converter, and in order to cooperate with the frequency converter, the motor 511 in the present invention is a variable frequency motor. The frequency converter can reliably regulate the speed within a set range, and the striking frequency during working can be conveniently regulated. The specific configuration is as follows: the two frequency converters are electrically connected with a motor 511 to form a parallel connection, and the fan-out coefficient of the control signal of one frequency converter is increased, so that the power tubes of the two frequency converters are controlled, and the output current is increased. Because there are two motors in this embodiment, in order to make the output of the two motors consistent, a set of current and signal measurement processing device is needed and is electrically connected with the control cabinet 2, the current and signal measurement processing device detects the output of the two motors in real time, and the signals processed by the operation table 1 and the control cabinet 2 are fed back to the frequency converter, so that the output of the two motors is consistent. The specific operation is as follows: the current consumed by the two motors is measured, the electronic circuit sums the signals and then averages the signals, the current of each motor 511 is respectively compared with the average value to obtain signals, and the signals are respectively fed back to the respective frequency converters to adjust the motor output.
In this embodiment, as shown in fig. 6, the winch drum 52 is further fixedly sleeved with a backrest disc 515, and the clutch disc 514 can be abutted against the backrest disc 515 when moving, so that the problem of unstable positions of the clutch disc 514 and the large gear 513 when being in a separating station is avoided.
Bearings are sleeved on two ends of the winch drum 52, the bearings are mounted on bearing seats 521, and the bearing seats 521 are mounted on the mounting plate 41.
In actual use, as shown in fig. 5 and 7, at least two sets of guide pins 43 are arranged on the outer wall of the hammer cylinder 4 along the axial direction, and each set of guide pins 43 is provided with two guide pins and is arranged in parallel in the horizontal direction. The guide feet 43 cooperate with the pile frame rail 84 to provide a guiding function.
As shown in fig. 2, the lower end of the hammer core 6 is recessed inward in the circumferential direction to form an annular step 61, and since the hammer core 6 is cylindrical, it can be regarded as a stepped shaft form having a smaller diameter at the lower end. The lower end of the hammer cylinder 4 is provided with a limiting ring 44 corresponding to the annular step 61 in position, the top surface of the limiting ring 44 is provided with a buffer cushion 45, the limiting ring 44 plays a limiting role on the position of the hammer core 6, the hammer core is prevented from falling out of the hammer cylinder 4, and vibration impact on mechanisms such as a power box 5 and the like on the upper part is avoided. The function of the cushion pad 45 is to avoid damage caused by rigid contact of the hammer core 6 with the stop collar. The cushion pad 45 is a rubber material.
The arrangement of the components of the invention before piling is as follows: the power supply 3 is arranged on a main deck of the stem of the piling ship or the crane ship, and is connected with a main switchboard of the piling ship or the crane ship (the power generation capacity is more than or equal to 1200 KVA) through a power cable inlet wire, or is connected with a container type generator set which is arranged on the stem of the piling ship or the crane ship and is specially matched with the stem of the piling ship or the crane ship. The outgoing lines are then electrically connected to a power box 5 on the ram via power cables and control signal cables, which are typically suspended by auxiliary hooks, so as not to interfere with the up-and-down motion of the ram. The control cabinet 2 is generally arranged adjacent to the power supply 3, and the operating table 1 is arranged at the side of a bow command and an operator. The hammer body can be hung on a pile frame of a piling ship to move up and down along a guide rail, and a lifting mode can be adopted by a crane ship or a self-elevating driving platform. In specific use, as shown in fig. 7, the hammer body and the alternate beating member 81 which are lifted to a certain height in advance are put down by using the pile frame hammer winch handle, the alternate beating member 81 is sleeved on the erected steel pipe pile 82, and the hammer core 6 of the hammer body is pressed on the alternate beating member 81. The hammer cylinder 4 and the alternate driving member 81 are matched with the pile frame guide rail 84 through respective guide legs, so that the hammer body can only move up and down along the pile frame guide rail 84. After the operation and installation are finished, an operator presses a start button on the operation table 1, the total power supply in the power supply 3 is switched on, and the clutch disc 514 and the large gear 513 are separated stations; the inverter starts to operate, so that the motor 511 starts to start idle from rest, and when the starting process is finished, a signal is fed back to the operator. Then, according to the opening button on the operation table 1, the clutch disc 514 is sequentially switched between the separating station and the combining station, the hammer core 6 is continuously lifted and falls through the winch drum 52 and the cable 53, and piling is carried out by means of the gravity falling impact potential energy of the hammer core 6. When the hammer is required to be stopped, the stop button is pressed again, the hammer stopping process is automatically completed, and the next starting process is ready.
In summary, according to the electric impact pile hammer disclosed by the invention, electric energy is converted into potential energy, so that the problem of small pile driving impact energy can be solved. Therefore, the invention effectively overcomes some practical problems in the prior art, thereby having high utilization value and use significance.
The above embodiments are merely illustrative of the principles of the present invention and its effectiveness, and are not intended to limit the invention. Modifications and variations may be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the invention. Accordingly, it is intended that all equivalent modifications and variations of the invention be covered by the claims, which are within the ordinary skill of the art, be within the spirit and scope of the present disclosure.
Claims (7)
1. An electric impact pile hammer, which is characterized in that: the automatic hammer comprises an operation table (1), a control cabinet (2), a power supply (3) and a hammer body, wherein the hammer body comprises a hammer barrel (4), a power box (5) is arranged at the upper end of the hammer barrel (4), a hammer core (6) capable of axially moving is arranged in the hammer barrel (4), the power box (5) comprises a driving mechanism (51) and a winch drum (52) driven by the driving mechanism (51), a cable (53) is arranged on the winch drum (52), the cable (53) is connected with the hammer core (6), and the operation table (1) controls the power supply (3) to supply electric energy for the power box (5) through the control cabinet (2); the power supply (3) is electrically connected with the power box (5) through a frequency converter; the upper part of the hammer cylinder (4) is provided with a mounting plate (41), and the power box (5) is arranged on the mounting plate (41);
still include rotatable pivot (42) that sets up on mounting panel (41), winch cylinder (52) cover is established on pivot (42), actuating mechanism (51) include motor (511), pinion (512), gear wheel (513) and clutch disc (514), pinion (512) are connected with the motor pivot, and pinion (512) meshes with gear wheel (513), gear wheel (513) are installed on pivot (42), clutch disc (514) cover is established at winch cylinder (52) and can only follow winch cylinder (52) axial displacement through telescopic machanism (7), clutch disc (514) can be in the same place through the magnetic pole absorption with gear wheel (513).
2. The electric impact pile hammer of claim 1, wherein: the telescopic mechanism (7) comprises a hydraulic cylinder (71), an intermediate shaft (72), a pulling pin (73) and a chuck (74), wherein a blind hole is formed in the end portion of the rotating shaft (42) along the axis, a long groove communicated with the blind hole is formed in the rotating shaft (42) along the axial direction, the hydraulic cylinder (71) is installed on the mounting plate (41), the intermediate shaft (72) is located in the blind hole, the pulling pin (73) is arranged in the long groove in a penetrating mode, one end of the intermediate shaft (72) is connected with a piston rod of the hydraulic cylinder (71) through a thrust bearing, the other end of the intermediate shaft is connected with the pulling pin (73), and the pulling pin (73) is pressed against the clutch disc (514) through the chuck (74).
3. The electric impact pile hammer of claim 2, wherein: the driving mechanism (51) and the telescopic mechanism (7) are respectively arranged at two ends of the rotating shaft (42).
4. The electric impact pile hammer of claim 1, wherein: a backrest disc (515) is fixedly sleeved on the winch drum (52), and the clutch disc (514) can be abutted against the backrest disc (515) when moving.
5. The electric impact pile hammer of claim 1, wherein: the winch drum (52) is sleeved with a bearing, the bearing is mounted on a bearing seat (521), and the bearing seat (521) is mounted on the mounting plate (41).
6. The electric impact pile hammer of claim 1, wherein: at least two groups of guide pins (43) are axially arranged on the outer wall of the hammer cylinder (4), and each group of guide pins (43) is provided with two guide pins and is arranged in parallel in the horizontal direction.
7. The electric impact pile hammer of claim 1, wherein: the lower end of the hammer core (6) is recessed inwards along the circumferential direction to form an annular step (61), a limiting ring (44) corresponding to the annular step (61) is arranged at the lower end of the hammer cylinder (4), and a buffer pad (45) is arranged on the top surface of the limiting ring (44).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611251216.0A CN108252304B (en) | 2016-12-29 | 2016-12-29 | Electric impact pile driving hammer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611251216.0A CN108252304B (en) | 2016-12-29 | 2016-12-29 | Electric impact pile driving hammer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108252304A CN108252304A (en) | 2018-07-06 |
| CN108252304B true CN108252304B (en) | 2023-09-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611251216.0A Active CN108252304B (en) | 2016-12-29 | 2016-12-29 | Electric impact pile driving hammer |
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| CN (1) | CN108252304B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111851489A (en) * | 2020-07-31 | 2020-10-30 | 山东鼎鲁建筑有限公司 | Piling device for building engineering foundation construction |
| CN113494085B (en) * | 2021-09-09 | 2021-11-16 | 海门市胜佳建筑设备有限公司 | Pile driver |
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|---|---|
| CN108252304A (en) | 2018-07-06 |
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