CN113653787A - Vibrating hammer and engineering machinery - Google Patents
Vibrating hammer and engineering machinery Download PDFInfo
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- CN113653787A CN113653787A CN202111002267.0A CN202111002267A CN113653787A CN 113653787 A CN113653787 A CN 113653787A CN 202111002267 A CN202111002267 A CN 202111002267A CN 113653787 A CN113653787 A CN 113653787A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/021—Shaft support structures, e.g. partition walls, bearing eyes, casing walls or covers with bearings
- F16H57/022—Adjustment of gear shafts or bearings
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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
- E02D7/18—Placing by vibrating
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/023—Mounting or installation of gears or shafts in the gearboxes, e.g. methods or means for assembly
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
Abstract
The invention relates to the technical field of engineering machinery, in particular to a vibratory hammer and engineering machinery. The vibration hammer comprises a first eccentric assembly, a second eccentric assembly, an adjusting assembly and an actuating element, wherein the first eccentric assembly and the second eccentric assembly are in transmission connection; the adjusting assembly is in transmission connection with the first eccentric assembly or the second eccentric assembly; the actuating element comprises a first transmission mechanism and a second transmission mechanism, the first transmission mechanism is connected with the first eccentric assembly or the second eccentric assembly to provide driving force for the first eccentric assembly or the second eccentric assembly, and the second transmission mechanism is connected with the adjusting assembly to provide driving force for the adjusting assembly. The first transmission mechanism and the second transmission mechanism are matched to enable the adjusting assembly to effectively adjust the phase difference of the first eccentric assembly and the phase difference of the second eccentric assembly under the actual working condition, and the phase difference change of the first eccentric assembly and the second eccentric assembly can change the vibration frequency and the amplitude of the vibration hammer, so that the adaptability of the vibration hammer is improved.
Description
Technical Field
The invention relates to the technical field of engineering machinery, in particular to a vibratory hammer and engineering machinery.
Background
The vibrating gear box is a key part of the vibrating pile hammer, when the vibrating pile hammer works, the motor drives one eccentric block assembly to rotate at a high speed, the other eccentric block assembly is driven to rotate at a high speed through a gear on the eccentric block assembly, the two eccentric block assemblies are symmetrically arranged, the component forces of the centrifugal forces in the horizontal direction are mutually offset, the component forces in the vertical direction are mutually superposed to form an exciting force, and therefore the gear box, the clamping nozzle and the pile body are driven to form high-frequency vibration, the pile body and the soil are vibrated and liquefied, the friction force between the pile body and the soil is reduced, and the pile driving and pile pulling efficiency is improved.
When the vibratory hammer is started, the driving unit needs to provide enough torque to overcome the gravity and the eccentric torque of the whole eccentric block, so that the starting burden is increased, and the starting speed of the vibratory pile hammer is delayed; secondly, along with the gradual increase or the gradual reduction of the rotating speed, the resonance can be triggered at a certain moment to drive the shell of the vibratory pile hammer to generate violent vibration and noise, so that the surrounding working environment and workers are influenced, and the overall safety performance of the vibratory pile hammer is also reduced.
In addition, the exciting force is in direct proportion to the eccentric mass moment and the square of the rotating speed; and the amplitude is related to the eccentric mass moment. Most of the existing vibrating pile hammers have fixed eccentric mass moment, so that the amplitude is not adjustable in the working process. For different geological construction sections, the adjustment cannot be effectively carried out when different frequencies (namely exciting forces) and amplitudes are needed, and the adaptability is influenced. While changing the frequency affects the excitation force.
Therefore, a vibration hammer and a construction machine are needed to solve the above technical problems.
Disclosure of Invention
The invention aims to provide a vibration hammer, which can adjust the frequency and amplitude of the vibration hammer according to a construction geological section, reduce the influence on the outside during vibration starting and extinguishing and improve the adaptability of the vibration hammer.
In order to achieve the purpose, the invention adopts the following technical scheme:
there is provided a vibratory hammer comprising:
the first eccentric assembly and the second eccentric assembly are in transmission connection;
the adjusting assembly is in transmission connection with the first eccentric assembly or the second eccentric assembly so as to adjust the phase difference of the first eccentric assembly and the second eccentric assembly;
and the actuating element comprises a first transmission mechanism and a second transmission mechanism, the first transmission mechanism is connected with the first eccentric assembly or the second eccentric assembly and used for providing driving force for the first eccentric assembly or the second eccentric assembly, and the second transmission mechanism is connected with the adjusting assembly and used for providing driving force for the adjusting assembly.
As a preferable technical solution of the above-mentioned vibratory hammer, the first eccentric assembly includes a first shaft, a first fixed eccentric unit, and a first adjustable eccentric unit; the first shaft sequentially penetrates through the first fixed eccentric unit and the first adjustable eccentric unit, and the first fixed eccentric unit and the first adjustable eccentric unit are arranged at intervals;
the second eccentric assembly comprises a second shaft, a second fixed eccentric unit and a second adjustable eccentric unit; the second shaft sequentially penetrates through the second fixed eccentric unit and the second adjustable eccentric unit, the second fixed eccentric unit and the second adjustable eccentric unit are arranged at intervals, the first shaft and the second shaft are arranged in parallel, the first fixed eccentric unit is in transmission connection with the second fixed eccentric unit, and the first adjustable eccentric unit is in transmission connection with the second adjustable eccentric unit;
the adjusting assembly comprises a third shaft and an adjusting unit arranged on the third shaft, the second transmission mechanism is connected with the third shaft, and the adjusting unit is in transmission connection with the first adjustable eccentric unit or the second adjustable eccentric unit.
As a preferable mode of the above-described vibration hammer, the first fixed eccentric unit includes a first fixed gear and a first fixed eccentric block, the first fixed eccentric block is fixedly connected to the first fixed gear, the second fixed eccentric unit includes a second fixed gear and a second fixed eccentric block, the second fixed eccentric block is fixedly connected to the second fixed gear, and the first fixed gear and the second fixed gear are engaged.
As an optimal technical scheme of above-mentioned vibratory hammer, first adjustable eccentric unit includes first bearing, first adjustable gear and first adjustable eccentric piece, first adjustable gear with first adjustable eccentric piece fixed connection, first bearing housing is located on the first axle, first adjustable gear with first adjustable eccentric piece is all overlapped and is located the outer lane of first bearing, the adjustable eccentric unit of second includes the adjustable eccentric piece of second bearing, the adjustable gear of second and second, the adjustable gear of second with the adjustable eccentric piece fixed connection of second, the second bearing housing is located on the second axle, the adjustable gear of second with the adjustable eccentric piece of second is all overlapped and is located the outer lane of second bearing, first adjustable gear with the adjustable gear meshing of second.
As a preferred technical solution of the above-mentioned vibratory hammer, the first adjustable eccentric unit further includes a first pressing plate, the second adjustable eccentric unit includes a second pressing plate, the first pressing plate is sleeved on the first shaft and fixedly connected to the first adjustable eccentric block, and the second pressing plate is sleeved on the second shaft and fixedly connected to the second adjustable eccentric block.
As a preferable technical solution of the above-mentioned vibratory hammer, the adjustment unit includes an adjustment gear, and the adjustment gear is engaged with the first adjustable gear or the second adjustable gear.
As a preferable technical solution of the above-mentioned vibration hammer, the vibration hammer further includes an angle sensor and a speed sensor, and the first shaft and the third shaft or the second shaft and the third shaft are both provided with the angle sensor and the speed sensor.
As a preferred technical scheme of the above vibratory hammer, the vibratory hammer further comprises a hydraulic pump, a main valve and two proportional speed regulating valve sets, wherein an oil outlet of the hydraulic pump is connected with an oil inlet of the main valve, an oil outlet of the main valve is respectively connected with oil inlets of the two proportional speed regulating valve sets, one of the two proportional speed regulating valve sets is connected with the first transmission mechanism, and the other one of the two proportional speed regulating valve sets is connected with the second transmission mechanism.
As a preferred technical scheme of the above vibrating hammer, the proportional speed regulating valve group includes a reversing valve, a first signal oil path a, a second signal oil path b, a differential pressure feedback valve and an adjustable throttle valve, the main valve is communicated with an oil inlet of the differential pressure feedback valve, an oil outlet of the differential pressure feedback valve is communicated with an oil inlet of the adjustable throttle valve, an oil inlet of the reversing valve is communicated with an oil outlet of the adjustable throttle valve, an oil outlet of the reversing valve is connected or blocked with an oil tank, two ends of the first signal oil path a are respectively connected with a first end of the differential pressure feedback valve and an oil inlet of the adjustable throttle valve, two ends of the second signal oil path b are respectively connected with a second end of the differential pressure feedback valve and an oil outlet of the adjustable throttle valve, and a spring is arranged at the second end.
The invention also provides engineering machinery comprising the vibrating hammer.
The invention has the beneficial effects that:
the vibrating hammer comprises a first eccentric assembly, a second eccentric assembly, an adjusting assembly and an actuating element, wherein the first eccentric assembly is in transmission connection with the second eccentric assembly; the adjusting assembly is in transmission connection with the first eccentric assembly or the second eccentric assembly so as to adjust the phase difference of the first eccentric assembly and the second eccentric assembly; the actuating element comprises a first transmission mechanism and a second transmission mechanism, the first transmission mechanism is connected with the first eccentric assembly or the second eccentric assembly and used for providing driving force for the first eccentric assembly or the second eccentric assembly, and the second transmission mechanism is connected with the adjusting assembly and used for providing driving force for the adjusting assembly. According to the invention, the first transmission mechanism is connected with the first eccentric assembly or the second eccentric assembly to provide a driving force for the first eccentric assembly or the second eccentric assembly, the second transmission mechanism is connected with the adjusting assembly to provide a driving force for the adjusting assembly, the first transmission mechanism and the second transmission mechanism are matched to enable the adjusting assembly to effectively adjust the phase difference of the first eccentric assembly and the phase difference of the second eccentric assembly under the actual working condition, and the vibration frequency and amplitude of the vibration hammer can be changed by changing the phase difference of the first eccentric assembly and the second eccentric assembly, so that the vibration hammer reduces the resonance influence on the outside in the vibration starting and extinguishing processes, the vibration hammer is adapted to the requirements of different construction geological sections, and the adaptability of the vibration hammer is improved.
Drawings
Fig. 1 is a schematic structural view of a vibration hammer provided in an embodiment of the present invention;
FIG. 2 is a schematic diagram illustrating the positional relationship of the first eccentric assembly, the second eccentric assembly and the adjustment assembly provided by an embodiment of the present invention;
FIG. 3 is a rear elevational view of the positional relationship of the first eccentric assembly, the second eccentric assembly and the adjustment assembly as provided by an embodiment of the present invention;
FIG. 4 is a cross-sectional view taken at A-A of FIG. 3;
fig. 5 is a schematic structural diagram of a hydraulic system of a vibratory hammer according to an embodiment of the present invention.
In the figure:
1. a first eccentric assembly; 11. a first shaft; 111. a transitional spline housing; 12. a first fixed eccentric unit; 121. a first fixed gear; 122. a first fixed eccentric mass; 13. a first adjustable eccentric unit; 131. a first bearing; 132. a first adjustable gear; 133. a first adjustable eccentric mass; 134. a first platen; 14. a first spacer sleeve; 15. a second spacer sleeve;
2. a second eccentric assembly; 21. a second shaft; 22. a second fixed eccentric unit; 221. a second fixed gear; 222. a second fixed eccentric mass; 23. a second adjustable eccentric unit; 231. a second bearing; 232. a second adjustable gear; 233. a second adjustable eccentric block; 234. a second platen; 24. a third spacer sleeve; 25. a fourth spacer sleeve;
3. an adjustment assembly; 31. a third axis; 32. an adjustment unit;
4. a first motor;
5. a second motor;
6. a hydraulic pump;
7. a main valve;
8. a proportional speed regulating valve group; 81. a diverter valve; 82. a differential pressure feedback valve; 83. an adjustable throttle valve; 84. an overflow valve;
91. positioning pins; 92. a bolt; 93. a flat bond;
101. an end bearing; 102. an end cap; 103. a bearing seat;
100. vibrating the box body; 200. and an end plate.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
In the description of the present embodiment, the terms "upper", "lower", "right", etc. are used in an orientation or positional relationship based on that shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.
Most of the existing vibrating pile hammers have fixed eccentric mass moment, so that the amplitude is not adjustable in the working process. And the adaptability is influenced because different frequencies and amplitudes are required to be effectively adjusted in different geological construction sections. While changing the frequency affects the excitation force.
To this end, the present embodiment provides a construction machine, which may be a pile driver, where the pile driver includes a vibratory hammer, and the amplitude of the vibratory hammer during the pile driving process of the pile driver can be adjusted. As shown in fig. 1, the vibratory hammer comprises a vibration box 100, an end plate 200, a first eccentric assembly 1, a second eccentric assembly 2, an adjusting assembly 3 and an actuating element, wherein the first eccentric assembly 1, the second eccentric assembly 2 and the adjusting assembly 3 are all arranged in the vibration box 100, the end plate 200 is arranged at two sides of the vibration box 100, the end parts of the first eccentric assembly 1, the second eccentric assembly 2 and the adjusting assembly 3 are fixed through the end plate 200, the actuating element is arranged outside the vibration box 100, and the first eccentric assembly 1 and the second eccentric assembly 2 are in transmission connection; the adjusting assembly 3 is in transmission connection with the first eccentric assembly 1 or the second eccentric assembly 2 and is used for adjusting the phase difference of the first eccentric assembly 1 and the second eccentric assembly 2; the actuating element comprises a first transmission mechanism and a second transmission mechanism, the first transmission mechanism is connected with the first eccentric assembly 1 or the second eccentric assembly 2 and used for providing driving force for the first eccentric assembly 1 or the second eccentric assembly 2, and the second transmission mechanism is connected with the adjusting assembly 3 and used for providing driving force for the adjusting assembly 3.
The first transmission mechanism is connected with the first eccentric assembly 1 or the second eccentric assembly 2 to provide driving force for the first eccentric assembly 1 or the second eccentric assembly 2, the second transmission mechanism is connected with the adjusting assembly 3 to provide driving force for the adjusting assembly 3, the first transmission mechanism is matched with the second transmission mechanism, the adjusting assembly 3 can effectively adjust the phase difference of the first eccentric assembly 1 and the phase difference of the second eccentric assembly 2 under the actual working condition, the phase difference change of the first eccentric assembly 1 and the second eccentric assembly 2 can change the vibration frequency and the amplitude of the vibration hammer, and therefore the vibration hammer reduces the resonance influence on the outside in the vibration starting and extinguishing processes, the vibration hammer is made to adapt to the requirements of different construction geological sections, and the adaptability of the vibration hammer is improved.
Alternatively, in the present embodiment, as shown in fig. 2, 3 and 4, the first eccentric assembly 1 comprises a first shaft 11, a first fixed eccentric unit 12 and a first adjustable eccentric unit 13; the first shaft 11 sequentially passes through the first fixed eccentric unit 12 and the first adjustable eccentric unit 13, and the first fixed eccentric unit 12 and the first adjustable eccentric unit 13 are arranged at intervals. Specifically, in the present embodiment, the first fixed eccentric unit 12 includes a first fixed gear 121 and a first fixed eccentric mass 122, and the first fixed eccentric mass 122 is fixedly connected to the first fixed gear 121. Illustratively, the first fixed eccentric mass 122 is connected with the first fixed gear 121 by a positioning pin 91, the first fixed eccentric mass 122 is fixedly connected with the first shaft 11 by a bolt 92, so as to realize the fixed connection of the first fixed gear 121 with the first shaft 11, and the first fixed gear 121 and the first fixed eccentric mass 122 are keyed with the first shaft 11 to prevent the first fixed gear 121 and the first fixed eccentric mass 122 from sliding radially during the rotation of the first shaft 11. Alternatively, the first fixed gear 121 and the first fixed eccentric mass 122 are connected with the first shaft 11 by a flat key 93, but of course, it is also possible that the first fixed gear 121 and the first fixed eccentric mass 122 are connected by a spline or other fixing means.
Optionally, in this embodiment, the first adjustable eccentric unit 13 includes a first bearing 131, a first adjustable gear 132 and a first adjustable eccentric block 133, the first adjustable gear 132 and the first adjustable eccentric block 133 are fixedly connected, specifically, fixedly connected through a bolt 92, the first bearing 131 is sleeved on the first shaft 11, the first adjustable gear 132 and the first adjustable eccentric block 133 are both sleeved on an outer ring of the first bearing 131, when the first transmission mechanism connected to the first shaft 11 or the second shaft 21 works, the first shaft 11 and the second shaft 21 both rotate, due to the first bearing 131, the first adjustable gear 132 and the first adjustable eccentric block 133 do not rotate with the first shaft 11, and the first adjustable gear 132 and the first adjustable eccentric block 133 rotate with the second transmission mechanism to adjust the eccentric mass distance between the first eccentric assembly 1 and the second eccentric assembly 2. In order to limit the first bearing 131 and prevent the first bearing 131 from moving axially along the first shaft 11, in this embodiment, a first spacer 14 is disposed between the first bearing 131 and the first fixed eccentric block 122, the first spacer 14 is sleeved on the first shaft 11, and the first spacer 14 abuts against the first fixed eccentric block 122 and the first bearing 131 respectively.
In order to prevent the first bearing 131 from sliding along the first fixed eccentric mass 122 toward the end bearing 101, the end bearings 101 are disposed at both ends of the first shaft 11, and in this embodiment, a second spacer 15 is disposed between the first bearing 131 and the end bearing 101, and the second spacer 15 abuts against the end bearing 101 and the first bearing 131, respectively.
Basically similar in structure to the first eccentric assembly 1, with reference to fig. 4, in the present embodiment the second eccentric assembly 2 comprises a second shaft 21, a second fixed eccentric element 22 and a second adjustable eccentric element 23; the second shaft 21 sequentially passes through the second fixed eccentric unit 22 and the second adjustable eccentric unit 23, the second fixed eccentric unit 22 and the second adjustable eccentric unit 23 are arranged at intervals, the first shaft 11 and the second shaft 21 are arranged in parallel, the first fixed eccentric unit 12 is in transmission connection with the second fixed eccentric unit 22, and the first fixed eccentric unit 12 and the second fixed eccentric unit 22 are arranged in axial symmetry. The first adjustable eccentric unit 13 is in driving connection with the second adjustable eccentric unit 23. Specifically, the second fixed eccentric unit 22 includes a second fixed gear 221 and a second fixed eccentric mass 222, the second fixed eccentric mass 222 is fixedly connected to the second fixed gear 221, the first fixed gear 121 and the second fixed gear 221 are engaged, and when either one of the first shaft 11 and the second shaft 21 rotates, the purpose of rotating both simultaneously can be achieved.
The second fixed eccentric unit 22 is arranged axially symmetrically, i.e. 180, to the first fixed eccentric unit 12. The eccentric mass moment of the second fixed eccentric unit 22 is equal in magnitude to the eccentric mass moment of the first fixed eccentric unit 12. The second adjustable eccentric unit 23 is arranged axially symmetrically, i.e. 180 ° to the first adjustable eccentric unit 13. The eccentric mass moment of the second adjustable eccentric unit 23 is equal in magnitude to the eccentric mass moment of the first adjustable eccentric unit 13. It will be appreciated that the eccentric mass moment of the second eccentric assembly 2 is of equal magnitude to the eccentric mass moment of the first eccentric assembly 1.
Illustratively, the second fixed eccentric mass 222 is connected with the second fixed gear 221 through a positioning pin 91, the second fixed eccentric mass 222 is fixedly connected with the second shaft 21 through a bolt 92, so as to realize the fixed connection of the second fixed gear 221 with the second shaft 21, and the second fixed gear 221 and the second fixed eccentric mass 222 are keyed with the second shaft 21 to prevent the second fixed gear 221 and the second fixed eccentric mass 222 from sliding radially during the rotation of the second shaft 21. Alternatively, the second fixed gear 221 and the second fixed eccentric mass 222 are connected with the second shaft 21 by a flat key 93, but of course, the second fixed gear 221 and the second fixed eccentric mass 222 may be connected by a spline or other fixing means.
Optionally, the second adjustable eccentric unit 23 includes a second bearing 231, a second adjustable gear 232 and a second adjustable eccentric block 233, the second adjustable gear 232 and the second adjustable eccentric block 233 are fixedly connected, the second bearing 231 is sleeved on the second shaft 21, the second adjustable gear 232 and the second adjustable eccentric block 233 are both sleeved on an outer ring of the second bearing 231, and the first adjustable gear 132 is engaged with the second adjustable gear 232. When the first transmission mechanism connected to the first shaft 11 or the second shaft 21 is operated, the first shaft 11 and the second shaft 21 rotate, the second adjustable gear 232 and the second adjustable eccentric mass 233 do not rotate with the second shaft 21 due to the second bearing 231, and the second adjustable gear 232 and the second adjustable eccentric mass 233 rotate with the rotation of the third shaft 31, so that the phase difference between the first eccentric assembly 1 and the second eccentric assembly 2 can be adjusted as desired, and the phase difference can be 0. In order to limit the second bearing 231 and prevent the second bearing 231 from moving along the axial direction of the second shaft 21, in this embodiment, a third spacer 24 is disposed between the second bearing 231 and the second fixed eccentric block 222, the third spacer 24 is sleeved on the second shaft 21, and the third spacer 24 abuts against the second fixed eccentric block 222 and the second bearing 231, respectively.
Optionally, in the present embodiment, the adjusting assembly 3 includes a third shaft 31 and an adjusting unit 32 disposed on the third shaft 31, the second transmission mechanism is connected to the third shaft 31, and the adjusting unit 32 is in transmission connection with the first adjustable eccentric unit 13 or the second adjustable eccentric unit 23. Wherein, first axle 11, second axle 21 and third axle 31 parallel arrangement to can the transmission be connected between the assurance each part, adjusting unit 32 includes adjusting gear, and third axle 31 passes adjusting gear, and adjusting gear and the key-type connection of third axle 31, adjusting gear and first adjustable gear 132 or the meshing of second adjustable gear 232. That is, the adjusting unit 32 can drive the first adjustable gear 132 or the second adjustable gear 232 to rotate, so as to realize different gear rotation speeds on the same shaft, thereby changing the phase difference between the first eccentric assembly 1 and the second eccentric assembly 2, and achieving the purpose of adjusting the frequency and the eccentric mass distance.
During the vibration starting and extinguishing process, the first adjustable eccentric mass 133 and the first fixed eccentric mass 122 on the first shaft 11 are both at 180 °, i.e. the eccentric portion of the first adjustable eccentric mass 133 and the eccentric portion of the first fixed eccentric mass 122 are located at both sides of the first shaft 11. Both the second adjustable eccentric mass 233 and the second fixed eccentric mass 222 on the second shaft 21 are at 180 °, i.e., the eccentric portion of the second adjustable eccentric mass 233 and the eccentric portion of the second fixed eccentric mass 222 are located on both sides of the second shaft 21. In the vibration starting and extinguishing processes, the eccentric mass distances of the first fixed eccentric unit and the first adjustable eccentric unit are equal, and correspondingly, the eccentric mass distances of the second fixed eccentric unit and the second adjustable eccentric unit are equal. In the hammering operation, the first and second driving mechanisms need to control the first and third shafts 11 and 31 to rotate at different speeds, so that the first adjustable eccentric mass 133 and the first fixed eccentric mass 122 are at 0 ° and the second adjustable eccentric mass 233 and the second fixed eccentric mass 222 are at 0 °. That is, the rotation of the first shaft 11 and the third shaft 31 is controlled by the first driving mechanism and the second driving mechanism to adjust the phase difference of the first eccentric assembly 1 and the phase difference of the second eccentric assembly 2.
Optionally, in this embodiment, the first adjustable eccentric unit 13 further includes a first pressing plate 134, the second adjustable eccentric unit 23 includes a second pressing plate 234, and the first pressing plate 134 is sleeved on the first shaft 11 and is fixedly connected to the first adjustable eccentric block 133. Illustratively, the first pressure plate 134 is fixedly connected to the first adjustable eccentric block 133 through a bolt 92, the first pressure plate 134 is used for pressing the first adjustable eccentric block 133 to move (i.e. axially move) toward the end bearing 101, and the second pressure plate 234 is sleeved on the second shaft 21 and is fixedly connected to the second adjustable eccentric block 233. Illustratively, the second pressing plate 234 is fixedly connected to the second adjustable eccentric block 233 by the bolt 92, and the second pressing plate 234 is used for pressing the second adjustable eccentric block 233 to move (i.e. move axially) towards the end bearing 101.
Because the end bearings 101 are arranged at the two ends of the first shaft 11, the second shaft 21 and the third shaft 31, for this reason, bearing seats 103 and end covers 102 are further respectively arranged at the two ends of the first shaft 11, the second shaft 21 and the third shaft 31, wherein the end bearings 101 are arranged in the space formed by the bearing seats 103, the end covers 102 are positioned outside the bearing seats 103, and the end covers 102 play a good role in protecting the end bearings 101. It should be noted that one of the end caps 102 of the first shaft 11 or the second shaft 21 is provided with a connecting hole into which a first driving mechanism can extend, and the first driving mechanism is connected with the first shaft 11 or the second shaft 21 to drive the first shaft 11 or the second shaft 21 to rotate. In this embodiment, a connecting hole is formed in one end cover 102 corresponding to the first shaft 11, correspondingly, an accommodating hole for accommodating the transition spline housing 111 is formed in the end portion of the first shaft 11, the transition spline housing 111 is in interference fit, and the output end of the first driving mechanism extends into the transition spline housing 111 and is in key connection with the first shaft 11.
Because the third shaft 31 is connected with the second driving mechanism, for this reason, a connecting hole into which the second driving mechanism can extend is provided on the end cover 102 corresponding to one end of the third shaft 31, an accommodating hole for accommodating the transition spline housing 111 is also provided at the end of the third shaft 31 and the end of the first shaft 11, so that the second driving mechanism is connected with the third shaft 31 in an interference fit manner, and the output end of the second driving mechanism extends into the transition spline housing 111 and is connected with the third shaft 31 in a key connection manner.
The first driving mechanism and the second driving mechanism are used for driving the shaft to rotate, so that the first driving mechanism and the second driving mechanism are motors or motors, the selection of the first driving mechanism and the second driving mechanism is specifically selected according to actual working conditions, and for the engineering machinery, the first driving mechanism and the second driving mechanism are used for selecting the motors.
Since this vibration hammer is used for a pile driver which is a construction machine, in the present embodiment, as shown in fig. 5, the first driving mechanism is the first motor 4, and the second driving mechanism is the second motor 5. The first motor 4 and the second motor 5 both provide hydraulic oil output power through the hydraulic pump 6, and therefore, the vibration hammer in this embodiment further includes the hydraulic pump 6, the main valve 7 and two proportional speed regulating valve sets 8, and the proportional speed regulating valve set 8 controls the flow rate of the pressure oil to change the rotating speeds of the first motor 4 and the second motor 5, so as to achieve the purpose of adjusting the frequency and the eccentric mass distance. The oil outlet of the hydraulic pump 6 is connected with the oil inlet of the main valve 7, the oil outlet of the main valve 7 is respectively connected with the oil inlets of the two proportional speed regulating valve groups 8, one of the two proportional speed regulating valve groups 8 is connected with the first transmission mechanism (namely, the first motor 4), and the other one is connected with the second transmission mechanism (namely, the second motor 5).
The first motor 4 is rotated by the pressurized oil to rotate the first shaft 11 and the first fixed eccentric unit 12 provided on the first shaft 11, and further rotates the second shaft 21 of the second eccentric assembly 2 by gear transmission because the first fixed gear 121 of the first fixed eccentric unit 12 is engaged with the second fixed gear 221 of the second fixed eccentric unit 22.
The proportional speed regulating valve group 8 comprises a reversing valve 81, a differential pressure feedback valve 82 and an adjustable throttle valve 83, wherein an oil outlet of a main valve 7 is communicated with an oil inlet of the differential pressure feedback valve 82, an oil outlet of the differential pressure feedback valve 82 is communicated with an oil inlet of the adjustable throttle valve 83, an oil inlet of the reversing valve 81 is connected with an oil outlet of the adjustable throttle valve 83, an oil outlet of the reversing valve 81 is connected with or closed by an oil tank, the proportional speed regulating valve group 8 further comprises a first signal oil path a and a second signal oil path b, one end of the first signal oil path a is connected with a first end of the differential pressure feedback valve 82, the other end of the first signal oil path a is connected with an oil inlet of the adjustable throttle valve 83, the second signal oil path b is connected with a second end of the differential pressure feedback valve 82, and a spring is further arranged at a second end of the differential pressure feedback valve 82. The first signal oil path a and the second signal oil path b connected with the two ends of the differential pressure feedback valve 82 are respectively positioned at the front end and the rear end of the adjustable throttle valve 83, so that the differential pressure feedback valve 82 enables the front differential pressure and the rear differential pressure of the adjustable throttle valve 83 to be constant, and the flow can be changed to adjust the rotating speed of the motor only by changing the opening area of the adjustable throttle valve 83. The reversing valve 81 controls whether the load feedback pressure of the motor is fed back to the differential pressure feedback valve 82, when the reversing valve 81 is in an upper position, the motor is in a non-working state, and the load feedback pressure of the motor is communicated with the oil tank; when the direction valve 81 is at the lower position, the load feedback pressure is blocked from the oil tank channel, the pressure oil flows to the second end of the differential pressure feedback valve 82 through the second signal oil path b, the oil pressure signal is fed back to one end of the differential pressure feedback valve 82, and the differential pressure feedback valve 82 controls the movement of the spool according to the pressure difference between the two ends to control the rotation speeds of the first motor 4 and the second motor 5, so that the rotation speed of the first motor 4 and the rotation speed of the second motor 5 can be the same or different. Further, since the main valve 7 mainly controls the operation of other actuators, the pressure of the pressure oil passing through the main valve 7 is high, and the differential pressure feedback valve 82 can further reduce the pressure of the pressure oil supplied from the main valve 7 so that the pressure oil can be normally supplied to the motor.
The proportional speed control valve group 8 comprises an overflow valve 84, and the overflow valve 84 is connected with the second signal oil path b. The relief valve 84 limits the load feedback pressure of the drive motor to avoid over-limit.
When the vibration hammer vibrates, the flow of the pressure oil to the first motor 4 and the second motor 5 is controlled through the proportional speed control valve group 8, namely the rotating speed of the first motor 4 and the rotating speed of the second motor 5 are changed, and the vibration frequency of the vibration hammer is changed. Optionally, the vibration hammer in this embodiment further includes a controller, an angle sensor and a rotation speed sensor, the angle sensor and the speed sensor are disposed on the first shaft 11 and the second shaft 21, and the speed sensor is disposed on the third shaft 31. The controller is electrically connected with the angle sensor, the rotating speed sensor, the main valve 7 and the hydraulic pump 6, the speed sensors respectively detect the rotating speeds of the first motor 4 and the second motor 5, and then the controller controls the proportional speed regulating valve group 8, so that the rotating speeds of the first shaft 11 and the second shaft 21 and the first adjustable eccentric unit 13 and the second adjustable eccentric unit 23 synchronously rotate, and the vibration frequency can be changed by changing the rotating speeds of the first motor 4 and the second motor 5. In a natural state, under the action of gravity, the first fixed eccentric mass 122 and the second fixed eccentric mass 222 are at the bottommost end instead of being 180 ° in a non-working state, and resonance to surrounding buildings can be avoided only when the eccentric mass moment is 0 in the processes of vibration starting and vibration extinguishing, so that the angle sensors are used for detecting the rotation angles of the first shaft 11 and the second shaft 21, respectively used for judging whether the first adjustable eccentric mass 133 and the first fixed eccentric mass 122 on the first shaft 11 are in a state of 180 ° or not, and whether the second adjustable eccentric mass 233 and the second fixed eccentric mass 222 on the second shaft 21 are in a state of 180 ° or not; if not, the rotation speeds of the first motor 4 and the second motor 5 are controlled to enable the first adjustable eccentric block 133 and the first fixed eccentric block 122 to be in an angle of 180 degrees, and the second adjustable eccentric block 233 and the second fixed eccentric block 222 are controlled to be in an angle of 180 degrees, so that large errors of amplitude and vibration frequency in the working process are prevented, and then the first motor 4 and the second motor 5 are accelerated to work.
When the hammer head vibrates, the flow of pressure oil which is led to the first motor 4 and the second motor 5 is controlled through the proportional speed control valve group 8, namely the rotating speed of the first motor 4 and the rotating speed of the second motor 5 are changed, and then the vibration frequency of the vibration hammer is changed; the speed sensors respectively detect the rotating speeds of the first motor 4 and the second motor 5, and then the controller controls the proportional speed regulating valve group 8 to enable the rotating speeds of the first shaft 11 and the second shaft 21 to be equal to the rotating speeds of the second adjustable eccentric unit 23 and the first adjustable eccentric unit 13, so that the rotating speed is changed, namely the frequency is changed.
The phase difference between the first fixed eccentric unit 12 and the second fixed eccentric unit 22 and the first adjustable eccentric unit 13 and the phase difference between the second fixed eccentric unit 22 and the second adjustable eccentric unit 23 can be changed by changing the rotation speed of the first motor 4 and the second motor 5, so that the eccentric mass moments of the first eccentric assembly 1 and the second eccentric assembly 2 can be changed, and the eccentric mass moments of the first fixed eccentric unit 12 and the first adjustable eccentric unit 13 can be adjusted to be equal, and the eccentric mass moments of the second fixed eccentric unit 22 and the second adjustable eccentric unit 23 can be adjusted to be equal, so that the stepless adjustment of the eccentric mass moment of the first eccentric assembly 1 and the eccentric mass moment of the second eccentric assembly from 0 to the maximum preset value can be realized. Wherein the eccentricity mass refers to the product of eccentricity and mass.
The phase difference of the eccentric mass moments of the first eccentric assembly 1 and the second eccentric assembly 2 can be adjusted by controlling the rotating speeds of the first motor 4 and the second motor 5, so that the eccentric mass moment of the first eccentric assembly 1 and the eccentric mass moment of the second eccentric assembly are 0 in the processes of starting and extinguishing vibration of the vibration hammer, when the frequency reaches a certain value, the rotating speeds of the first motor 4 and the second motor 5 are changed, the change of the eccentric mass moment is realized, the resonance avoidance in the processes of starting and extinguishing vibration is realized, and the resonance of surrounding buildings is effectively avoided; meanwhile, the stepless adjustment of the frequency and the eccentric mass moment of the vibration hammer can be realized according to different geological working conditions, and the adaptability of the working conditions is met.
In addition, the foregoing is only the preferred embodiment of the present invention and the technical principles applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (10)
1. A vibratory hammer, comprising:
the device comprises a first eccentric assembly (1) and a second eccentric assembly (2), wherein the first eccentric assembly (1) and the second eccentric assembly (2) are in transmission connection;
the adjusting assembly (3) is in transmission connection with the first eccentric assembly (1) or the second eccentric assembly (2) so as to adjust the phase difference of the first eccentric assembly (1) and the second eccentric assembly (2);
and the actuating element comprises a first transmission mechanism and a second transmission mechanism, the first transmission mechanism is connected with the first eccentric assembly (1) or the second eccentric assembly (2) and is used for providing driving force for the first eccentric assembly (1) or the second eccentric assembly (2), and the second transmission mechanism is connected with the adjusting assembly (3) and is used for providing driving force for the adjusting assembly (3).
2. A vibro hammer according to claim 1, characterized by the fact that the first eccentric assembly (1) comprises a first shaft (11), a first fixed eccentric unit (12) and a first adjustable eccentric unit (13); the first shaft (11) sequentially penetrates through the first fixed eccentric unit (12) and the first adjustable eccentric unit (13), and the first fixed eccentric unit (12) and the first adjustable eccentric unit (13) are arranged at intervals;
the second eccentric assembly (2) comprises a second shaft (21), a second fixed eccentric unit (22) and a second adjustable eccentric unit (23); the second shaft (21) sequentially penetrates through the second fixed eccentric unit (22) and the second adjustable eccentric unit (23), the second fixed eccentric unit (22) and the second adjustable eccentric unit (23) are arranged at intervals, the first shaft (11) and the second shaft (21) are arranged in parallel, the first fixed eccentric unit (12) is in transmission connection with the second fixed eccentric unit (22), and the first adjustable eccentric unit (13) is in transmission connection with the second adjustable eccentric unit (23);
the adjusting assembly (3) comprises a third shaft (31) and an adjusting unit (32) arranged on the third shaft (31), the second transmission mechanism is connected with the third shaft (31), and the adjusting unit (32) is in transmission connection with the first adjustable eccentric unit (13) or the second adjustable eccentric unit (23).
3. A vibro hammer according to claim 2, characterized in that the first fixed eccentric unit (12) comprises a first fixed gear (121) and a first fixed eccentric mass (122), the first fixed eccentric mass (122) being fixedly connected to the first fixed gear (121), the second fixed eccentric unit (22) comprising a second fixed gear (221) and a second fixed eccentric mass (222), the second fixed eccentric mass (222) being fixedly connected to the second fixed gear (221), the first fixed gear (121) being engaged with the second fixed gear (221).
4. The vibro hammer according to claim 3, characterized in that the first adjustable eccentric unit (13) comprises a first bearing (131), a first adjustable gear (132) and a first adjustable eccentric mass (133), the first adjustable gear (132) and the first adjustable eccentric mass (133) are fixedly connected, the first bearing (131) is sleeved on the first shaft (11), the first adjustable gear (132) and the first adjustable eccentric mass (133) are both sleeved on the outer ring of the first bearing (131), the second adjustable eccentric unit (23) comprises a second bearing (231), a second adjustable gear (232) and a second adjustable eccentric mass (233), the second adjustable gear (232) and the second adjustable eccentric mass (233) are fixedly connected, the second bearing (231) is sleeved on the second shaft (21), and the second adjustable gear (232) and the second adjustable eccentric mass (233) are both sleeved on the second bearing (231) ) The first adjustable gear (132) and the second adjustable gear (232) are in mesh.
5. The vibro hammer according to claim 4, characterized by that, the first adjustable eccentric unit (13) further comprises a first pressure plate (134), the second adjustable eccentric unit (23) comprises a second pressure plate (234), the first pressure plate (134) is sleeved on the first shaft (11) and fixedly connected with the first adjustable eccentric mass (133), the second pressure plate (234) is sleeved on the second shaft (21) and fixedly connected with the second adjustable eccentric mass (233).
6. A vibro hammer according to claim 4, characterized by the adjustment unit (32) comprising an adjustment gear, which meshes with the first (132) or second (232) adjustable gear.
7. A vibro hammer according to claim 4, characterized by further comprising an angle sensor and a speed sensor, both provided on the first shaft (11) and on the third shaft (31) or on the second shaft (21) and on the third shaft (31).
8. The vibratory hammer of claim 1, further comprising a hydraulic pump (6), a main valve (7) and two proportional speed control valve sets (8), wherein an oil outlet of the hydraulic pump (6) is connected with an oil inlet of the main valve (7), an oil outlet of the main valve (7) is respectively connected with oil inlets of the two proportional speed control valve sets (8), one of the two proportional speed control valve sets (8) is connected with the first transmission mechanism, and the other is connected with the second transmission mechanism.
9. The vibro hammer according to claim 8, characterized in that, the proportional speed valve set (8) comprises a reversing valve (81), a first signal oil path a, a second signal oil path b, a differential pressure feedback valve (82) and an adjustable throttle valve (83), the main valve (7) is communicated with the oil inlet of the differential pressure feedback valve (82), the oil outlet of the differential pressure feedback valve (82) is communicated with the oil inlet of the adjustable throttle valve (83), the oil inlet of the reversing valve (81) is communicated with the oil outlet of the adjustable throttle valve (83), the oil outlet of the reversing valve (81) is connected or stopped with the oil tank, the two ends of the first signal oil path a are respectively connected with the first end of the differential pressure feedback valve (82) and the oil inlet of the adjustable throttle valve (83), the two ends of the second signal oil path b are respectively connected with the second end of the differential pressure feedback valve (82) and the oil outlet of the adjustable throttle valve (83), the second end is provided with a spring.
10. A working machine comprising a vibro hammer as claimed in any one of claims 1 to 9.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111002267.0A CN113653787A (en) | 2021-08-30 | 2021-08-30 | Vibrating hammer and engineering machinery |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111002267.0A CN113653787A (en) | 2021-08-30 | 2021-08-30 | Vibrating hammer and engineering machinery |
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| CN113653787A true CN113653787A (en) | 2021-11-16 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117144911A (en) * | 2023-10-31 | 2023-12-01 | 山东建勘集团有限公司 | Piling device for construction |
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2021
- 2021-08-30 CN CN202111002267.0A patent/CN113653787A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117144911A (en) * | 2023-10-31 | 2023-12-01 | 山东建勘集团有限公司 | Piling device for construction |
| CN117144911B (en) * | 2023-10-31 | 2024-01-09 | 山东建勘集团有限公司 | Piling device for construction |
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Address after: No.2676 Kejia Road, high tech Zone, Jinan City, Shandong Province, 250104 Applicant after: Lingong Heavy Machinery Co.,Ltd. Address before: No.2676 Kejia Road, high tech Zone, Jinan City, Shandong Province, 250104 Applicant before: LINGONG GROUP JINAN HEAVY MACHINERY Co.,Ltd. |
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