Two-stage vibration reduction high-frequency vibration pile hammer equipment

Abstract

The invention discloses two-stage vibration reduction high-frequency vibration pile hammer equipment which comprises a vibration excitation mechanism, the vibration excitation mechanism comprises a box body, at least one driving shaft and at least two driven shafts, the driving shafts are meshed with the driven shafts, the driven shafts are meshed with each other, the driving shafts and the driven shafts are linearly arranged, one end of each driving shaft is connected with a hydraulic motor, and the other end of each driving shaft is connected with a hydraulic cylinder; an eccentric block is arranged on the driven shaft; the vibration reduction mechanism is arranged on the box body, the vibration reduction mechanism comprises a first vibration reduction part and second vibration reduction parts, the second vibration reduction parts are arranged on the two sides of the first vibration reduction part correspondingly, and the two second vibration reduction parts are symmetrically arranged on the two sides of the first vibration reduction part; the pile clamping device is arranged on the side, away from the vibration reduction mechanism, of the box body. Compared with the prior art, the vibration pile hammer can solve the problems that an existing vibration pile hammer generates large noise pollution, rigidity adjustment is inconvenient, transverse rigidity is small, a machine body is prone to transversely shaking, when pressure is too large, springs are combined into rings, and the vibration reduction effect is poor.

Description

Technical Field

[0001] The invention relates to the technical field of vibratory pile hammers, and in particular to a high-frequency vibratory pile hammer device with two-stage vibration reduction. Background Art

[0002] Hydraulic vibratory hammer is a mechanical device that uses a hydraulic system to convert high-pressure oil into mechanical energy to produce impact or vibration effects. It can "liquefy" the soil around the pile body, reduce the pile-soil resistance, and quickly achieve the purpose of sinking the pile. This vibratory hammer relies on the rotation of a pair of eccentric mass blocks to generate vertical exciting force. When starting and stopping, the equipment will resonate. If the vibration reduction effect of the vibration reduction device is not good, the vibration transmitted to the pile frame will cause cracking of the weld, loss of control of electrical components and oil leakage of the hydraulic system, thereby increasing the cost of sinking and pulling piles, reducing production efficiency, and affecting the health of workers.

[0003] The existing vibration pile hammer vibration reduction device uses metal rotating springs for vibration reduction, such as "Optimization Design of Vibration Pile Driving and Extraction Machine Vibration Reduction Device" in "Construction Machinery and Devices" No. 4, 1992, P17 and "D275K Vibration Pile Hammer" in "Construction Machinery" No. 9, 1994. The vibration reduction device is large in size, produces large noise pollution, is inconvenient to adjust the stiffness, has low lateral stiffness, and is prone to lateral shaking of the machine body. When the pressure is too large, the spring coils are doubled, and the vibration reduction effect is poor. Summary of the invention

[0004] The purpose of the present invention is to provide a high-frequency vibration pile hammer device with two-stage vibration reduction in order to solve the problems that the existing vibration pile hammer produces large noise pollution, is inconvenient to adjust the stiffness, has small lateral stiffness, is prone to lateral shaking of the machine body, and when the pressure is too large, the spring coils are doubled and the vibration reduction effect is poor.

[0005] In order to achieve the above object, the present invention provides a high-frequency vibration pile hammer device with two-stage vibration reduction, which comprises:

[0006] A vibration excitation mechanism, the vibration excitation mechanism comprising a box, at least one driving shaft and at least two driven shafts, the driving shaft meshes with the driven shafts, the driven shafts mesh with each other, the driving shaft and the driven shafts are arranged in a straight line, one end of the driving shaft is connected to a hydraulic motor, and an eccentric block is provided on the driven shaft;

[0007] A vibration damping mechanism, the vibration damping mechanism is arranged on the box body, the vibration damping mechanism comprises a first vibration damping component and a second vibration damping component, the second vibration damping components are respectively arranged on both sides of the first vibration damping component, and the two second vibration damping components are symmetrically arranged on both sides of the first vibration damping component;

[0008] A pile clamp is arranged on a side of the box body away from the vibration reduction mechanism.

[0009] As a further description of the above technical solution:

[0010] The first vibration damping component includes two symmetrically arranged first connecting plates, a connecting rod is provided between the two first connecting plates, a second connecting plate is movably connected to the connecting rod, at least one first shock absorber is respectively provided on both sides of the second connecting plate, and one end of the first shock absorber away from the second connecting plate is connected to the first shell.

[0011] As a further description of the above technical solution:

[0012] The second connecting plate is provided with a sliding hole, and the connecting rod is inserted into the sliding hole.

[0013] As a further description of the above technical solution:

[0014] The second connecting plate is provided with a connecting hole, a limiting rod is provided in the connecting hole, and the first shell is provided with a limiting hole corresponding to the position of the limiting rod.

[0015] As a further description of the above technical solution:

[0016] The first shell is provided with a lifting ring and a lifting hole.

[0017] As a further description of the above technical solution:

[0018] A third connecting plate is provided on the second vibration damping component, wherein one end of the third connecting plate on one of the second vibration damping components is connected to one side of the box body, and one end of the third connecting plate on the other of the second vibration damping components is connected to the other side of the box body.

[0019] As a further description of the above technical solution:

[0020] The second vibration-damping component includes a second shell connected to the first vibration-damping component, at least one second shock absorber is arranged in the second shell, one end of the second shock absorber is connected to the second shell, and the other end of the second shock absorber is connected to the third connecting plate.

[0021] As a further description of the above technical solution:

[0022] The second shock absorber is a rubber shock absorber, the middle of the rubber shock absorber is a cylindrical section, both ends of the cylindrical section are respectively fixedly connected to a rectangular plate, and a plurality of connection holes are arranged on the rectangular plate.

[0023] As a further description of the above technical solution:

[0024] The driving shaft and the driven shaft are both provided with gears, and the eccentric block is provided on the gear on the driven shaft.

[0025] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0026] 1. In the present invention, by setting the first vibration-damping component and the second vibration-damping component, the effect of double vibration-damping can be achieved, wherein the second vibration-damping component is composed of three large rubber vibration-damping blocks, which are not easy to break compared with springs, and have much greater resistance to sound transmission than metal springs, so the sound insulation is better and the noise is small during operation. The three rubber vibration-damping blocks are arranged in a finished product shape, which can withstand shear deformation and compression deformation at the same time, and have a good vibration-damping effect; the first vibration-damping component is composed of eight small rubber vibration-damping blocks, which can absorb additional pile pulling force. Through the coordinated use of large rubber vibration-damping blocks and small rubber vibration-damping blocks, the vibration generated during the pile driving process can be alleviated, the impact force can be absorbed, the vibration sound pollution is small, the vibration reduction is stable, and the vibration reduction effect is good, thereby improving the sinking and pulling efficiency, reducing the pile driving cost, and reducing the pollution of vibration to the environment.

[0027] 2. In the present invention, the connecting rod and the limit rod are provided to limit the distance that the second connecting plate can move up and down, so that the vibration amplitude of the vibration reduction mechanism can be controlled to avoid excessive vibration amplitude of the vibration reduction mechanism. The first connecting plate and the third connecting plate are provided to disperse the force points of the vibration reduction mechanism, so that the force on the vibration reduction mechanism is more uniform, not easy to be damaged, and the service life is increased. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0029] Figure 1 It is a structural schematic diagram of a high-frequency vibration pile hammer device with two-stage vibration reduction.

[0030] Figure 2 The diagram is a structural diagram of a vibration reduction mechanism in a high-frequency vibration pile hammer device with two-stage vibration reduction.

[0031] Figure 3 The diagram is a structural diagram of a vibration excitation mechanism in a high-frequency vibration pile hammer device with two-stage vibration reduction.

[0032] Figure 4 The diagram is a structural diagram of the first vibration reduction component in a high-frequency vibration pile hammer device with two-stage vibration reduction.

[0033] Figure 5 The figure is a schematic diagram of the structure of the second vibration reduction component in a high-frequency vibration pile hammer device with two-stage vibration reduction.

[0034] Figure 6 The diagram is a structural diagram of the second shock absorber in a high-frequency vibration pile hammer device with two-stage vibration reduction.

[0035] Legend:

[0036] 1. Vibration mechanism; 11. Box; 12. Active shaft; 13. Driven shaft; 14. Hydraulic motor; 15. Eccentric block; 2. First vibration-damping component; 21. First connecting plate; 22. Connecting rod; 23. Second connecting plate; 231. Sliding hole; 232. Connecting hole; 24. First shock absorber; 25. First shell; 251. Limiting hole; 252. Lifting ring; 253. Lifting hole; 26. Limiting rod; 3. Second vibration-damping component; 31. Second shell; 32. Second shock absorber; 321. Cylindrical section; 322. Rectangular plate; 4. Pile clamp; 5. Third connecting plate; 6. Connecting hole; 7. Gear. DETAILED DESCRIPTION

[0037] In order to make the purpose, 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 in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0038] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0040] In the description of the embodiments of the present invention, it should be noted that the terms "upper", "inner", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are directions or positional relationships in which the inventive product is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0041] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] See also Figure 1-6 The present invention provides a high-frequency vibration pile hammer device with two-stage vibration reduction, comprising:

[0043] The vibration mechanism 1 comprises a box 11, at least one driving shaft 12 and at least two driven shafts 13, wherein the driving shaft 12 is meshed with the driven shafts 13, and the driven shafts 13 are meshed with each other, and the driving shaft and the driven shafts 13 are arranged in a straight line, one end of the driving shaft 12 is connected to a hydraulic motor 14, and an eccentric block 15 is provided on the driven shaft 13;

[0044] A vibration damping mechanism, the vibration damping mechanism is arranged on the box body 11, the vibration damping mechanism comprises a first vibration damping component 2 and a second vibration damping component 3, the second vibration damping components 3 are respectively arranged on both sides of the first vibration damping component 2, and the two second vibration damping components 3 are symmetrically arranged on both sides of the first vibration damping component 2;

[0045] The pile clamp 4 is arranged on a side of the box body 11 away from the vibration reduction mechanism.

[0046] The first vibration-damping component 2 includes two symmetrically arranged first connecting plates 21, a connecting rod 22 is provided between the two first connecting plates 21, a second connecting plate 23 is movably connected to the connecting rod 22, at least one first shock absorber 24 is provided on both sides of the second connecting plate 23, and one end of the first shock absorber 24 away from the second connecting plate 23 is connected to the first housing 25. The bottom of the first connecting plate is fixedly connected to the top of the box body, the connecting rod is fixedly connected to the first connecting plate, the second connecting plate is located between the two first connecting plates, and can move up and down, the first shock absorber 2 has the same structure as the second shock absorber, both are rubber shock absorbers, eight first shock absorbers are provided, and four are provided on each side of the second connecting plate, which are arranged in a rectangular shape, so that the force on the second connecting plate can be more uniform.

[0047] The second connecting plate 23 is provided with a sliding hole 231, and the connecting rod 22 is inserted into the sliding hole 231. The sliding hole is arranged vertically, so as to provide space for the second connecting plate to move.

[0048] The second connecting plate 23 is provided with a connecting hole 232, in which a limiting rod 26 is provided, and the first housing 25 is provided with a limiting hole 251 at a position corresponding to the limiting rod 26. The cooperation between the limiting rod and the limiting hole can limit the distance of the second connecting plate moving up and down, thereby controlling the vibration amplitude of the vibration reduction mechanism.

[0049] The first housing 25 is provided with a lifting ring 252 and a lifting hole 253. The lifting ring or the lifting hole facilitates the movement and fixation of the device.

[0050] The second vibration-damping component 3 is provided with a third connecting plate 5, wherein one end of the third connecting plate 5 on one of the second vibration-damping components 3 is connected to one side of the box body 11, and one end of the third connecting plate 5 on the other of the second vibration-damping components 3 is connected to the other side of the box body 11. In this way, the forces on both sides of the exciting mechanism can be dispersed to the second vibration-damping component, so that the overall structure is subjected to more uniform forces and is not easily damaged during vibration.

[0051] The second vibration-damping component 3 includes a second housing 31 connected to the first vibration-damping component 2, and at least one second shock absorber 32 is arranged in the second housing 31. One end of the second shock absorber 32 is connected to the second housing 31, and the other end of the second shock absorber 32 is connected to the third connecting plate 5. There are three second shock absorbers arranged in a herringbone shape, which can withstand shear deformation and compression deformation at the same time, and have a good vibration reduction effect.

[0052] The second shock absorber 32 is a rubber shock absorber, the middle of the rubber shock absorber is a cylindrical section 321, and the two ends of the cylindrical section 321 are respectively fixedly connected to a rectangular plate 322, and a plurality of connecting holes 6 are provided on the rectangular plate 322. The rectangular plate and the cylindrical section are an integrally formed structure with a stable structure; the connecting holes are screw holes, which can be fixed by bolts, and are convenient for disassembly and assembly.

[0053] Gears 7 are disposed on both the driving shaft 12 and the driven shaft 13 , and the eccentric mass 15 is disposed on the gears 7 on the driven shaft 13 .

[0054] Working principle: The equipment is hoisted onto the crane through the lifting ring, and then the embedded pile object is clamped by the pile clamp. After that, the hydraulic motor drives the active shaft to rotate, and the active shaft drives the secondary wheel to rotate. The gear on the active shaft drives the gear on the driven shaft to rotate, so that the eccentric block on the gear produces an oscillating motion to make the box vibrate up and down. During the vibration stage, the vibration reduction mechanism reduces the vibration amplitude of the box, thereby completing the use process of the vibratory pile hammer.

[0055] In the present invention, by arranging the first vibration-damping component and the second vibration-damping component, the double vibration-damping effect can be achieved, wherein the second vibration-damping component is composed of three large rubber vibration-damping blocks, which are not easy to break compared with springs, and have much greater resistance to sound transmission than metal springs, so they have better sound insulation and less noise during operation, and the three rubber vibration-damping blocks are arranged in a finished product shape, which can withstand shear deformation and compression deformation at the same time, and have a good vibration-damping effect; the first vibration-damping component is composed of eight small rubber vibration-damping blocks, and the small rubber vibration-damping blocks can absorb additional pile pulling force. Through the coordinated use of large rubber vibration-damping blocks and small rubber vibration-damping blocks, the vibration generated during the pile driving process can be alleviated, the impact force can be absorbed, the vibration sound pollution is small, the vibration reduction is stable, and the vibration reduction effect is good, thereby improving the sinking and pulling efficiency, reducing the pile driving cost, and reducing the pollution of vibration to the environment. The connecting rod and the limit rod are provided to limit the distance that the second connecting plate can move up and down, thereby controlling the vibration amplitude of the vibration damping mechanism and avoiding excessive vibration amplitude of the vibration damping mechanism. The first connecting plate and the third connecting plate are provided to disperse the force points of the vibration damping mechanism, so that the force on the vibration damping mechanism is more evenly distributed, not easy to be damaged, and the service life is increased.

[0056] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A high-frequency vibration pile hammer device with two-stage vibration reduction, characterized in that: include: A vibration excitation mechanism, the vibration excitation mechanism comprising a box, at least one driving shaft and at least two driven shafts, the driving shaft meshes with the driven shafts, the driven shafts mesh with each other, the driving shaft and the driven shafts are arranged in a straight line, one end of the driving shaft is connected to a hydraulic motor, and an eccentric block is provided on the driven shaft; A vibration damping mechanism, the vibration damping mechanism is arranged on the box body, the vibration damping mechanism comprises a first vibration damping component and a second vibration damping component, the second vibration damping components are respectively arranged on both sides of the first vibration damping component, and the two second vibration damping components are symmetrically arranged on both sides of the first vibration damping component; A pile clamp is arranged on a side of the box body away from the vibration reduction mechanism.

2. A high-frequency vibration pile hammer device with two-stage vibration reduction according to claim 1, characterized in that: The first vibration damping component includes two symmetrically arranged first connecting plates, a connecting rod is provided between the two first connecting plates, a second connecting plate is movably connected to the connecting rod, at least one first shock absorber is respectively provided on both sides of the second connecting plate, and one end of the first shock absorber away from the second connecting plate is connected to the first shell.

3. The high-frequency vibration pile hammer equipment with two-stage vibration reduction according to claim 2 is characterized in that: The second connecting plate is provided with a sliding hole, and the connecting rod is inserted into the sliding hole.

4. The high-frequency vibration pile hammer equipment with two-stage vibration reduction according to claim 2, characterized in that: The second connecting plate is provided with a connecting hole, a limiting rod is provided in the connecting hole, and the first shell is provided with a limiting hole corresponding to the position of the limiting rod.

5. The high-frequency vibration pile hammer equipment with two-stage vibration reduction according to claim 2, characterized in that: The first shell is provided with a lifting ring and a lifting hole.

6. The high-frequency vibration pile hammer equipment with two-stage vibration reduction according to claim 1, characterized in that: A third connecting plate is provided on the second vibration damping component, wherein one end of the third connecting plate on one of the second vibration damping components is connected to one side of the box body, and one end of the third connecting plate on the other of the second vibration damping components is connected to the other side of the box body.

7. A high-frequency vibration pile hammer device with two-stage vibration reduction according to claim 6, characterized in that: The second vibration-damping component includes a second shell connected to the first vibration-damping component, at least one second shock absorber is arranged in the second shell, one end of the second shock absorber is connected to the second shell, and the other end of the second shock absorber is connected to the third connecting plate.

8. The high-frequency vibration pile hammer equipment with two-stage vibration reduction according to claim 7, characterized in that: The second shock absorber is a rubber shock absorber, the middle of the rubber shock absorber is a cylindrical section, both ends of the cylindrical section are respectively fixedly connected to a rectangular plate, and a plurality of connection holes are arranged on the rectangular plate.

9. The high-frequency vibration pile hammer equipment with two-stage vibration reduction according to claim 1, characterized in that: The driving shaft and the driven shaft are both provided with gears, and the eccentric block is provided on the gear on the driven shaft.

Images