Hydraulic vibratory hammer

Abstract

The invention relates to the technical field of engineering piling equipment, in particular to a hydraulic vibration hammer which comprises a vibration excitation box and a vibration reduction frame above the vibration excitation box, a bearing frame is arranged below the vibration reduction frame, a sliding rail beam is further arranged below the bearing frame, and two pipe clamping devices electrically connected to a control system are arranged on the sliding rail beam in a sliding mode. Bowl-shaped rolling ball grooves are formed in the sliding rail beam and the bearing frame, the two rolling ball grooves are matched to form an incomplete ball shape, a deflection ball is rotationally placed in the two rolling ball grooves, a driving assembly used for driving the deflection ball to rotate in the two rolling ball grooves is arranged on the bearing frame, and an abutting rod located below the sliding rail beam is arranged on the deflection ball. The other end, opposite to the deflection ball, of the abutting rod is provided with an abutting head used for abutting against the inner wall of the pipe pile. The method has the advantage that the pile sinking difficulty is reduced.

Description

Technical Field

[0001] This application relates to the field of engineering piling equipment technology, and in particular to a hydraulic vibratory hammer. Background Technology

[0002] A hydraulic vibratory hammer is a vibration device driven by a hydraulic system, primarily used in engineering fields such as pile foundation construction and ground treatment. Its working principle involves a hydraulic motor driving an eccentric block to rotate at high speed, generating a horizontal centrifugal force that forms a periodic excitation force. This force causes the pile to overcome soil resistance and sink or pull out under the vibration. This equipment features high vibration frequency, high pile driving efficiency, and strong adaptability, and is widely used in foundation construction for bridges, buildings, ports, and other engineering projects.

[0003] In actual pile driving, the pile driving effect of hydraulic vibratory hammer is greatly affected by soil quality. For example, in cohesive soil, high-frequency vibration may lead to insufficient soil liquefaction, and instead cause "piling sticking" due to adsorption, which increases the pile driving resistance and has obvious shortcomings. Summary of the Invention

[0004] To reduce the difficulty of pile driving, this application provides a hydraulic vibratory hammer.

[0005] The hydraulic vibratory hammer provided in this application adopts the following technical solution: A hydraulic vibratory hammer includes an excitation box and a damping frame above it. A support frame is arranged below the damping frame, and a slide rail beam is also arranged below the support frame. Two pipe clamps electrically connected to a control system are slidably arranged on the slide rail beam. Both the slide rail beam and the support frame have bowl-shaped ball grooves. The two ball grooves fit together to form an incomplete sphere. A deflecting ball is rotatably placed in the two ball grooves. A drive assembly for driving the deflecting ball to rotate in the two ball grooves is arranged on the support frame. A stop rod is arranged on the deflecting ball below the slide rail beam. A stop head for abutting against the inner wall of the pipe pile is arranged at the other end of the stop rod opposite the deflecting ball.

[0006] By adopting the above technical solution, after the hydraulic vibratory hammer drives the pipe pile into the soil to a certain depth, the pipe clamp first releases its grip on the pipe pile. Then, the drive assembly drives the deflection ball to deflect within the ball groove. This deflection ball drives the abutment rod to rotate, and the abutment head presses against the inner wall of the pipe pile and rotates circumferentially. The bottom end of the pipe pile remains relatively stationary and rotates in an inverted conical shape. The pipe pile circumferentially compresses the surrounding soil, thus forming an inverted conical gap between the pipe pile and the surrounding soil. Afterward, the pipe clamp re-grips the pipe pile to achieve pipe driving. The above operation process is repeated until the pipe pile is driven to the specified depth. This method reduces the contact area between the pipe pile and the surrounding soil during the pipe driving process, thus reducing the difficulty of pipe driving.

[0007] Optionally, the driving assembly includes a centrifugal part for driving the abutment to deviate from the vertical centerline of the pipe pile and abut against the inner wall of the pipe pile, and a circumferential part for driving the abutment to rotate circumferentially on the inner wall of the pipe pile.

[0008] By adopting the above technical solution, firstly, the centrifugal part drives the abutment away from the vertical center line of the pipe pile and pushes the pipe pile to squeeze the soil layer on one side. Then, the rotating part drives the abutment to rotate circumferentially, and the pipe pile will squeeze the soil layer circumferentially in an inverted cone shape. When the pipe pile returns to vertical, a cone-shaped gap is formed between the pipe pile and the soil layer.

[0009] Optionally, the centrifugal unit includes a crossbeam mounted within a support frame, a hydraulic cylinder hinged to the crossbeam and electrically connected to the control system, wherein the piston rod of the hydraulic cylinder is hinged to a deflection link, and the other end of the deflection link relative to the hydraulic cylinder is hinged to a deflection ball.

[0010] By adopting the above technical solution, the control system starts the hydraulic cylinder, the piston rod of the hydraulic cylinder extends, and the deflection connecting rod pushes the deflection ball to deflect in the ball groove. The deflection ball moves by driving the abutment head through the abutment rod.

[0011] Optionally, the crossbeam has a rotating hole, and a radial crossbar is rotatably mounted in the rotating hole. A bearing block is arranged on the crossbar, and the hydraulic cylinder is located on the bearing block. A gear ring is also rotatably mounted at the rotating hole, and a bottom block is arranged at the bottom of the gear ring. The crossbar rotates through the bottom block. A hydraulic motor electrically connected to the control system is arranged at the bottom of the vibration box, and a gear meshing with the gear ring is arranged on the output shaft of the hydraulic motor.

[0012] By adopting the above technical solution, the control system starts the hydraulic motor, the output shaft of the hydraulic motor drives the gear to rotate, the gear drives the gear ring to rotate, and the gear ring drives the hydraulic cylinder on the bearing block to achieve circumferential rotation through the crossbar and the bottom block.

[0013] Optionally, the deflection ball is threadedly connected to a fastening sleeve, and the abutment extends into the fastening sleeve and is connected to a limiting head.

[0014] By adopting the above technical solution, workers can replace the abutments with different soft and hard materials and different lengths according to the soil properties of the soil layer, thereby improving the applicability to different soil types.

[0015] Optionally, when the piston rod of the hydraulic cylinder is fully retracted, the angle between the piston rod and the deflection link is less than 180°.

[0016] By adopting the above technical solution, the strong impact on the hydraulic cylinder piston rod when its thrust on the deflection connecting rod is collinear with the piston rod can be avoided, which is beneficial to improving the continuous and stable use of the device.

[0017] Optionally, both the crossbar and the deflection ball are coated with polytetrafluoroethylene.

[0018] By adopting the above technical solution, polytetrafluoroethylene has a low coefficient of friction, which helps to improve the smoothness of the rotation of the crossbar and the deflection ball.

[0019] Optionally, the support frame is provided with reinforcing ribs.

[0020] By adopting the above technical solutions, the reinforcing ribs can improve the structural strength of the load-bearing frame.

[0021] In summary, this application includes at least one of the following beneficial technical effects: 1. After the hydraulic vibratory hammer drives the pipe pile into the soil to a certain depth, the pipe clamp first releases its grip on the pipe pile. Then, the drive assembly drives the deflecting ball to deflect within the ball groove. This deflection ball drives the abutment to rotate, and the abutment presses against the inner wall of the pipe pile and rotates circumferentially. The bottom end of the pipe pile remains relatively stationary and rotates in an inverted conical shape. The pipe pile circumferentially compresses the surrounding soil, creating an inverted conical gap between the pipe pile and the surrounding soil. The pipe clamp then re-grips the pipe pile to continue driving the pipe. This process is repeated until the pipe pile is driven to the designated depth. This method reduces the contact area between the pipe pile and the surrounding soil during the driving process, thus reducing the difficulty of driving the pipe. 2. Workers can replace the abutments with different materials (soft or hard) and lengths according to the soil type, thereby improving the applicability to different soil types. Attached Figure Description

[0022] Figure 1 This is a structural schematic diagram of an embodiment of this application.

[0023] Figure 2 This is an exploded view showing the positional relationship between the crossbeam and the hydraulic cylinder in an embodiment of this application.

[0024] Figure 3 This is an exploded view showing the positional relationship between the support frame, the slide rail beam, and the deflection ball in the embodiments of this application.

[0025] Explanation of reference numerals in the attached drawings: 1. Vibration box; 2. Vibration damping frame; 3. Bearing frame; 4. Slide rail beam; 5. Pipe clamp; 6. Ball groove; 7. Deflection ball; 811. Crossbar; 8111. Turning hole; 812. Hydraulic cylinder; 813. Deflection connecting rod; 821. Crossbar; 822. Bearing block; 823. Gear ring; 824. Base block; 825. Hydraulic motor; 826. Gear; 9. Abutment; 10. Abutment head; 11. Reinforcing rib. Detailed Implementation

[0026] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0027] This application discloses a hydraulic vibratory hammer.

[0028] Reference Figure 1 The hydraulic vibratory hammer includes an excitation box 1 and a damping frame 2 above it. A U-shaped support frame 3 is bolted to the bottom of the damping frame 2. A reinforcing rib 11 is integrally formed on the support frame 3, which improves the overall structural strength of the support frame 3.

[0029] Reference Figure 1 Below the support frame 3, a slide rail beam 4 is also bolted. Two pipe clamps 5 electrically connected to the control system are slidably arranged on the slide rail beam 4. The two pipe clamps 5 cooperate to clamp the top of the pipe pile.

[0030] Reference Figure 1 , Figure 2 and Figure 3 Both the slide rail beam 4 and the support frame 3 are provided with bowl-shaped ball grooves 6. The two ball grooves 6 fit together to form an incomplete sphere. A deflecting ball 7 is rotatably placed in the two ball grooves 6. The deflecting ball 7 is coated with polytetrafluoroethylene. A stop rod 9 is arranged on the deflecting ball 7 below the slide rail beam 4. The other end of the stop rod 9 opposite the deflecting ball 7 is welded with a stop head 10 for abutting against the inner wall of the pipe pile.

[0031] The support frame 3 is equipped with a drive assembly for driving the deflection ball 7 to rotate in the two ball grooves 6. The drive assembly includes a centrifugal part for driving the abutment 10 to deviate from the vertical center line of the pipe pile and abut against the inner wall of the pipe pile, and a circumferential part for driving the abutment 10 to rotate circumferentially on the inner wall of the pipe pile.

[0032] Reference Figure 1 and Figure 2 The centrifugal section includes a horizontal frame 811 mounted on the support frame 3, a hydraulic cylinder 812 hinged to the horizontal frame 811 and electrically connected to the control system, and a deflection link 813 hinged to the piston rod of the hydraulic cylinder 812. The other end of the deflection link 813 relative to the hydraulic cylinder 812 is hinged to the deflection ball 7.

[0033] Reference Figure 1 , Figure 2 and Figure 3 A rotating hole 8111 is provided at the midpoint of the crossbeam 811 relative to its length. A radial crossbar 821 is mounted inside the rotating hole 8111. The crossbar 821 is coated with polytetrafluoroethylene and a bearing block 822 is fixedly sleeved on it. A hydraulic cylinder 812 is bolted to the bearing block 822.

[0034] Reference Figure 1 , Figure 2 and Figure 3A gear ring 823 is rotatably mounted at the rotatable hole 8111. A base block 824 is bolted to the bottom of the gear ring 823, and the crossbar 821 rotates through the base block 824. A hydraulic motor 825 electrically connected to the control system is bolted to the bottom of the vibration box 1. A gear 826 meshing with the gear ring 823 is fixedly sleeved on the output shaft of the hydraulic motor 825.

[0035] Reference Figure 1 , Figure 2 and Figure 3 After the hydraulic vibratory hammer drives the pipe pile into the soil to a certain depth, the pipe clamp 5 releases its grip on the pipe pile. The control system starts the hydraulic cylinder 812, and the piston rod of the hydraulic cylinder 812 extends, thereby deflecting the connecting rod 813 and driving the deflecting ball 7 to rotate in the ball groove 6.

[0036] The deflection ball 7 drives the abutment rod 9 to rotate, which in turn drives the abutment head 10 to deviate from the vertical center line of the pipe pile until the abutment head 10 presses against the inner wall of the pipe pile and squeezes the soil layer on one side.

[0037] Next, the control system starts the hydraulic motor 825. The output shaft of the hydraulic motor 825 drives the gear ring 823 to rotate through the gear 826. The gear ring 823 then drives the entire centrifugal part to rotate circumferentially through the bottom block 824 and the crossbar 821. In this way, the head 10 can push the pipe pile to rotate circumferentially in a conical shape, and a conical gap will be formed between the pipe pile and the soil layer.

[0038] Reference Figure 1 Each time the pipe pile is driven to a certain depth, the above operation process is repeated. The existence of this gap can reduce the direct contact area between the pipe pile and the soil layer, thereby reducing the impact of the "piling clogging" phenomenon and helping to reduce the difficulty of pile driving.

[0039] Reference Figure 1 and Figure 3 The deflection ball 7 is threaded with a fastening sleeve (not shown in the figure), and the abutment 9 extends into the fastening sleeve and is welded with a limiting head (not shown in the figure). This allows workers to replace abutments 9 with different soft and hard materials and different lengths, thereby improving the applicability to different soil types and different sizes of pipe piles.

[0040] Reference Figure 1 and Figure 3 When the piston rod of hydraulic cylinder 812 is fully retracted, the angle between the piston rod of hydraulic cylinder 812 and deflection connecting rod 813 is less than 180°.

[0041] The implementation principle of a hydraulic vibratory hammer in this application embodiment is as follows: After the hydraulic vibratory hammer drives the pipe pile into the soil to a certain depth, the pipe clamp 5 releases its grip on the pipe pile. The control system starts the hydraulic cylinder 812, and the piston rod of the hydraulic cylinder 812 extends, thereby deflecting the connecting rod 813 and driving the deflecting ball 7 to rotate in the ball groove 6.

[0042] The deflection ball 7 drives the abutment rod 9 to rotate, which in turn drives the abutment head 10 to deviate from the vertical center line of the pipe pile until the abutment head 10 presses against the inner wall of the pipe pile and squeezes the soil layer on one side.

[0043] Next, the control system starts the hydraulic motor 825. The output shaft of the hydraulic motor 825 drives the gear ring 823 to rotate through the gear 826. The gear ring 823 then drives the entire centrifugal part to rotate circumferentially through the bottom block 824 and the crossbar 821. In this way, the head 10 can push the pipe pile to rotate circumferentially in a conical shape, and a conical gap will be formed between the pipe pile and the soil layer.

[0044] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A hydraulic vibratory hammer, comprising an excitation box (1) and a damping frame (2) above it, characterized in that: A bearing frame (3) is arranged below the shock absorber frame, and a slide rail beam (4) is also arranged below the bearing frame (3). Two clamps (5) electrically connected to the control system are slidably arranged on the slide rail beam (4). Bowl-shaped ball grooves (6) are opened on both the slide rail beam (4) and the bearing frame (3). The two ball grooves (6) fit together to form an incomplete sphere. A deflecting ball (7) is rotatably placed in the two ball grooves (6). A drive assembly for driving the deflecting ball (7) to rotate in the two ball grooves (6) is arranged on the bearing frame (3). A stop rod (9) located below the slide rail beam (4) is arranged on the deflecting ball (7). A stop head (10) for abutting against the inner wall of the pipe pile is arranged at the other end of the stop rod (9) relative to the deflecting ball (7).

2. The hydraulic vibratory hammer according to claim 1, characterized in that: The drive assembly includes a centrifugal part for driving the abutment (10) to deviate from the vertical centerline of the pipe pile and abut against the inner wall of the pipe pile, and a circumferential part for driving the abutment (10) to rotate circumferentially on the inner wall of the pipe pile.

3. The hydraulic vibratory hammer according to claim 2, characterized in that: The centrifugal unit includes a crossbeam (811) mounted in the support frame (3) and a hydraulic cylinder (812) hinged to the crossbeam (811) and electrically connected to the control system. The piston rod of the hydraulic cylinder (812) is hinged to a deflection link (813), and the other end of the deflection link (813) relative to the hydraulic cylinder (812) is hinged to a deflection ball (7).

4. The hydraulic vibratory hammer according to claim 3, characterized in that: The crossbeam (811) has a rotating hole (8111), and a radial crossbar (821) is rotatably mounted in the rotating hole (8111). A bearing block (822) is arranged on the crossbar (821), and the hydraulic cylinder (812) is located on the bearing block (822). A gear ring (823) is also rotatably mounted at the rotating hole (8111). A bottom block (824) is arranged at the bottom of the gear ring (823), and the crossbar (821) rotates through the bottom block (824). A hydraulic motor (825) electrically connected to the control system is arranged at the bottom of the excitation box (1), and a gear (826) meshing with the gear ring (823) is arranged on the output shaft of the hydraulic motor (825).

5. The hydraulic vibratory hammer according to claim 1, characterized in that: The deflection ball (7) is threaded with a fastening sleeve, and the abutment (9) extends into the fastening sleeve and is connected to a limit head.

6. The hydraulic vibratory hammer according to claim 3, characterized in that: When the piston rod of the hydraulic cylinder (812) is fully retracted, the included angle between the piston rod of the hydraulic cylinder (812) and the deflection link (813) is less than 180°.

7. The hydraulic vibratory hammer according to claim 4, characterized in that: Both the crossbar (821) and the deflection ball (7) are coated with polytetrafluoroethylene.

8. The hydraulic vibratory hammer according to claim 1, characterized in that: The support frame (3) is provided with reinforcing ribs (11).

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