Resonance-free vibratory hammer

Abstract

The resonance-free vibratory hammer comprises a machine shell, the machine shell is rotationally provided with a plurality of eccentric blocks, the eccentric blocks are rotationally arranged in the machine shell through rotating shafts, the rotating shafts are in linkage connection, and the machine shell is provided with a driving oil cylinder located between the rotating shafts. The driving oil cylinder is in linkage connection with the rotating shafts so that the driving oil cylinder can adjust the phase angle of the eccentric blocks, the rotating shafts are evenly distributed on the upper side and the lower side of the cylinder body so that the eccentric blocks can be vertically arranged on the machine shell, the machine shell provides a mounting carrier for all components, the eccentric blocks are rotationally arranged in the machine shell through the rotating shafts, and the rotating shafts are in linkage through gears. The phase angle of the eccentric block is adjusted through the driving oil cylinder, so that the starting vibration frequency crosses a resonance area, resonance is avoided, and resonance harm is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vibration hammers, in particular to a resonance-free vibration hammer. BACKGROUND

[0002] A vibration hammer is a special equipment for realizing work by using periodic mechanical vibration in the field of engineering construction. The core function is to make the object vibrate or the structure break by generating controllable excitation force. It is widely used in foundation treatment, pile foundation construction and other scenes. In application, the vibration hammer is mainly used for piling, pile pulling, foundation compaction and vibration sinking pipe pile construction. With the characteristics of high efficiency and low impact, it becomes a key equipment in soft soil foundation treatment, municipal engineering and building construction.

[0003] The vibration pile hammer disclosed in the patent application No. CN216108489U includes a vibrator, a vibration absorber and a connecting bracket. The vibration absorber includes side plates arranged opposite to both sides of the connecting bracket. The connecting bracket has sequentially arranged placement cavities filled with shear rubber. The side plates are fixedly provided with bottom plates corresponding to the shear rubber. The shear rubber is fixedly connected with the bottom plates. The connecting bracket is fixedly connected with the vibrator axially downward. The connecting bracket is fixedly connected with connecting seats on opposite sides. The connecting seats are arranged between the side plates. The connecting seats are fixedly connected with compression rubber on the side surface facing the vibrator. The side plates are provided with limiting seats on the side surface axially downward of the compression rubber. The limiting seats are provided with an active gap between the side surface facing the compression rubber and the compression rubber. The vibration effect is improved, and the pile pulling force of the vibration pile hammer is increased. However, when starting and stopping, the excitation frequency is close to the natural frequency of the vibration damping system, which causes resonance of the vibration hammer and produces resonance hazards. Therefore, the technology still has certain improvement space. SUMMARY

[0004] The technical problem to be solved by the present application is to provide a resonance-free vibration hammer to solve the above problems of the prior art.

[0005] To achieve the above purpose, the present application provides the following technical scheme. A resonance-free vibration hammer includes a machine shell. The machine shell is provided with a plurality of eccentric blocks. The eccentric blocks are rotatably arranged in the machine shell through rotating shafts. The rotating shafts are connected in linkage. The machine shell is provided with a drive oil cylinder between the rotating shafts. The drive oil cylinder is connected in linkage with the rotating shafts to adjust the phase angle of the eccentric blocks.

[0006] The technical scheme is adopted, the shell provides an installation carrier for various components, the eccentric blocks are arranged in the shell through the rotation shafts, linkage is realized between the rotation shafts, synchronous rotation of the eccentric blocks is realized to generate stable exciting force; the shell is connected with the rotation shafts through the driving oil cylinder arranged between the rotation shafts, the phase angle of the eccentric blocks can be adjusted through the action of the driving oil cylinder, the effective rotation range of the eccentric blocks can be controlled in the starting and stopping stages through the adjustment of the phase angle of the eccentric blocks, and the actual eccentric moment of the eccentric blocks at different rotation speeds is changed; when the starting rotation speed of the vibration hammer gradually increases or the stopping rotation speed gradually decreases, the change process of the exciting frequency can be avoided from the natural frequency interval of the damping system or the residence time of the exciting frequency in the natural frequency interval is shortened through the adjustment of the phase angle of the eccentric blocks, so that the starting vibration frequency is beyond the resonance region, resonance is avoided, and resonance damage is reduced.

[0007] The technical scheme is adopted, the shell provides an installation carrier for various components, the eccentric blocks are arranged in the shell through the rotation shafts, linkage is realized between the rotation shafts, synchronous rotation of the eccentric blocks is realized to generate stable exciting force; the shell is connected with the rotation shafts through the driving oil cylinder arranged between the rotation shafts, the phase angle of the eccentric blocks can be adjusted through the action of the driving oil cylinder, the effective rotation range of the eccentric blocks can be controlled in the starting and stopping stages through the adjustment of the phase angle of the eccentric blocks, and the actual eccentric moment of the eccentric blocks at different rotation speeds is changed; when the starting rotation speed of the vibration hammer gradually increases or the stopping rotation speed gradually decreases, the change process of the exciting frequency can be avoided from the natural frequency interval of the damping system or the residence time of the exciting frequency in the natural frequency interval is shortened through the adjustment of the phase angle of the eccentric blocks, so that the starting vibration frequency is beyond the resonance region, resonance is avoided, and resonance damage is reduced.

[0008] The technical scheme is adopted, the shell provides an installation carrier for various components, the eccentric blocks are arranged in the shell through the rotation shafts, linkage is realized between the rotation shafts, synchronous rotation of the eccentric blocks is realized to generate stable exciting force; the shell is connected with the rotation shafts through the driving oil cylinder arranged between the rotation shafts, the phase angle of the eccentric blocks can be adjusted through the action of the driving oil cylinder, the effective rotation range of the eccentric blocks can be controlled in the starting and stopping stages through the adjustment of the phase angle of the eccentric blocks, and the actual eccentric moment of the eccentric blocks at different rotation speeds is changed; when the starting rotation speed of the vibration hammer gradually increases or the stopping rotation speed gradually decreases, the change process of the exciting frequency can be avoided from the natural frequency interval of the damping system or the residence time of the exciting frequency in the natural frequency interval is shortened through the adjustment of the phase angle of the eccentric blocks, so that the starting vibration frequency is beyond the resonance region, resonance is avoided, and resonance damage is reduced.

[0009] The technical scheme is adopted, the shell provides an installation carrier for various components, the eccentric blocks are arranged in the shell through the rotation shafts, linkage is realized between the rotation shafts, synchronous rotation of the eccentric blocks is realized to generate stable exciting force; the shell is connected with the rotation shafts through the driving oil cylinder arranged between the rotation shafts, the phase angle of the eccentric blocks can be adjusted through the action of the driving oil cylinder, the effective rotation range of the eccentric blocks can be controlled in the starting and stopping stages through the adjustment of the phase angle of the eccentric blocks, and the actual eccentric moment of the eccentric blocks at different rotation speeds is changed; when the starting rotation speed of the vibration hammer gradually increases or the stopping rotation speed gradually decreases, the change process of the exciting frequency can be avoided from the natural frequency interval of the damping system or the residence time of the exciting frequency in the natural frequency interval is shortened through the adjustment of the phase angle of the eccentric blocks, so that the starting vibration frequency is beyond the resonance region, resonance is avoided, and resonance damage is reduced.

[0010] The technical scheme is adopted, the shell provides an installation carrier for various components, the eccentric blocks are arranged in the shell through the rotation shafts, linkage is realized between the rotation shafts, synchronous rotation of the eccentric blocks is realized to generate stable exciting force; the shell is connected with the rotation shafts through the driving oil cylinder arranged between the rotation shafts, the phase angle of the eccentric blocks can be adjusted through the action of the driving oil cylinder, the effective rotation range of the eccentric blocks can be controlled in the starting and stopping stages through the adjustment of the phase angle of the eccentric blocks, and the actual eccentric moment of the eccentric blocks at different rotation speeds is changed; when the starting rotation speed of the vibration hammer gradually increases or the stopping rotation speed gradually decreases, the change process of the exciting frequency can be avoided from the natural frequency interval of the damping system or the residence time of the exciting frequency in the natural frequency interval is shortened through the adjustment of the phase angle of the eccentric blocks, so that the starting vibration frequency is beyond the resonance region, resonance is avoided, and resonance damage is reduced.

[0011] The resonance-free vibration hammer can be further provided with: the cylinder body is provided with a driving gear on both sides, the rotating shafts are uniformly distributed on the upper and lower sides of the cylinder body to vertically arrange the eccentric blocks in the shell, each rotating shaft is provided with a driven gear, and the driving gears are engaged with the driven gears on the upper and lower sides to form a gear transmission mechanism.

[0012] The above technical scheme is adopted, the driving gears are arranged on both sides of the cylinder body to provide a gear transmission interface for power output; the rotating shafts are uniformly distributed on the upper and lower sides of the cylinder body, so that the eccentric blocks connected with the rotating shafts are vertically arranged in the shell; each rotating shaft is provided with a driven gear, the driving gears are engaged with the driven gears on the upper and lower sides to form a gear transmission mechanism; when the cylinder body rotates under the action of the driving oil cylinder, the driving gears on both sides of the cylinder body synchronously drive the driven gears at the corresponding positions on the upper and lower sides to rotate, the driven gears are fixedly connected with the rotating shafts, and then the rotating shafts on the upper and lower sides are synchronously rotated to finally realize adjustment of the phase angle of the vertically arranged eccentric blocks.

[0013] The above technical scheme is adopted, the driving gears are arranged on both sides of the cylinder body to provide a gear transmission interface for power output; the rotating shafts are uniformly distributed on the upper and lower sides of the cylinder body, so that the eccentric blocks connected with the rotating shafts are vertically arranged in the shell; each rotating shaft is provided with a driven gear, the driving gears are engaged with the driven gears on the upper and lower sides to form a gear transmission mechanism; when the cylinder body rotates under the action of the driving oil cylinder, the driving gears on both sides of the cylinder body synchronously drive the driven gears at the corresponding positions on the upper and lower sides to rotate, the driven gears are fixedly connected with the rotating shafts, and then the rotating shafts on the upper and lower sides are synchronously rotated to finally realize adjustment of the phase angle of the vertically arranged eccentric blocks.

[0014] The above technical scheme is adopted, the driving source is arranged on one side of the shell and connected with the rotating shafts on the upper and lower sides of the cylinder body to provide rotating power for the rotating shafts; when the driving source is started, the rotating torque output by the driving source is transmitted to the rotating shafts on the upper and lower sides to synchronously rotate the eccentric blocks fixed with the rotating shafts, and periodic exciting forces are generated through rotation of the eccentric blocks.

[0015] The above technical scheme is adopted, the driving source is arranged on one side of the shell and connected with the rotating shafts on the upper and lower sides of the cylinder body to provide rotating power for the rotating shafts; when the driving source is started, the rotating torque output by the driving source is transmitted to the rotating shafts on the upper and lower sides to synchronously rotate the eccentric blocks fixed with the rotating shafts, and periodic exciting forces are generated through rotation of the eccentric blocks.

[0016] The above technical scheme is adopted, the driving source is arranged on one side of the shell and connected with the rotating shafts on the upper and lower sides of the cylinder body to provide rotating power for the rotating shafts; when the driving source is started, the rotating torque output by the driving source is transmitted to the rotating shafts on the upper and lower sides to synchronously rotate the eccentric blocks fixed with the rotating shafts, and periodic exciting forces are generated through rotation of the eccentric blocks.

[0017] The above technical scheme is adopted, the driving source is arranged on one side of the shell and connected with the rotating shafts on the upper and lower sides of the cylinder body to provide rotating power for the rotating shafts; when the driving source is started, the rotating torque output by the driving source is transmitted to the rotating shafts on the upper and lower sides to synchronously rotate the eccentric blocks fixed with the rotating shafts, and periodic exciting forces are generated through rotation of the eccentric blocks.

[0018] The mounting frame on both sides of the mounting box provides fixed support for the rubber columns, the rubber columns are fixedly installed on the outer periphery of the mounting frame to form an elastic support structure surrounding the mounting frame, and the rubber columns are fixedly connected with the rack through the mounting plate to form a flexible force transmission path between the mounting box and the rack through the mounting frame, the rubber columns and the mounting plate.

[0019] The resonance-free vibration hammer can be further provided with a hydraulic motor as the driving source.

[0020] The hydraulic motor is arranged on one side of the shell and connected with the rotating shafts on the upper and lower sides of the cylinder body, the hydraulic system controls the output rotating speed of the hydraulic motor by adjusting the oil supply amount, the oil supply amount is directly changed to change the hydraulic oil flow entering the hydraulic motor, and then the rotating speed of the rotor is adjusted to realize stepless adjustment of the rotating speed.

[0021] The resonance-free vibration hammer can be further provided with a rotating bearing arranged between the driving gear and the cylinder body.

[0022] The rotating bearing is arranged between the driving gear and the cylinder body to provide radial and axial support for the driving gear, allow relative rotation between the driving gear and the cylinder body or reduce the frictional resistance when the two are fixedly connected, and reduce the friction coefficient of the driving gear during synchronous rotation with the cylinder body, reduce mechanical wear, and limit the radial runout of the driving gear to ensure the coaxiality of the driving gear and the cylinder body.

[0023] The resonance-free vibration hammer can be further provided with a fixed frame mounted on the rack, the fixed frame is connected with the rack through a fixed pin shaft, a plurality of pulleys connected with external steel ropes are arranged on one side of the fixed frame, a plurality of connecting plates are arranged on the bottom of the fixed frame in the axial direction, fixed wheels for winding and fixing the steel ropes are arranged on the end portions of the connecting plates, the rack and the fixed frame are provided with a plurality of oppositely arranged sliding blocks in the length direction, and the sliding blocks are provided with sliding grooves connected with the outside in a sliding manner.

[0024] Adopting the technical scheme, the fixed frame installed at the rack end provides a support base for related components; the plurality of pulleys arranged at one side of the fixed frame are used for guiding the external steel rope, which can reduce the friction loss when the steel rope contacts the fixed frame, and meanwhile, the tension direction of the steel rope can be kept stable; the plurality of connecting plates arranged axially at the bottom of the fixed frame and the fixed wheels at the end are used for winding and fixing the steel rope, which can enhance the firmness of the connection between the steel rope and the fixed frame, avoid the steel rope from loosening or position deviation in the vibration operation process, and ensure the reliability of tension transmission; the plurality of relative sliding blocks and the sliding grooves on the sliding blocks arranged along the length direction of the rack and the fixed frame realize the sliding connection between the rack and the fixed frame or the external structure, allow the structure to have a certain relative displacement along the length direction in the vibration process, thereby buffering the vibration energy and reducing the occurrence of resonance phenomenon, and meanwhile, the working position of the equipment can be adjusted according to the construction demand, and the operation adaptability is improved.

[0025] The beneficial effects of the present application are as follows: the shell provides an installation carrier for various components, the plurality of eccentric blocks are arranged in the shell through rotating shafts, the rotating shafts are connected through connecting pieces, the phase angle of the eccentric blocks is adjusted through the driving oil cylinder, the effective rotation range of the eccentric blocks can be controlled in the start-up and shutdown stages, so that the vibration frequency in the start-up stage is beyond the resonance region, resonance is avoided, and the resonance harm is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 The figure is a structural schematic diagram of the present application; Figure 2 The figure is an internal structure diagram of the present application; Figure 3 The figure is a structure sectional view of the driving oil cylinder of the present application; Figure 4 The figure is a structure diagram of the vibration reduction assembly of the present application; Figure 5 The figure is a structure diagram of the fixed frame of the present application; Label annotation: 1-shell, 2-eccentric block, 3-rotating shaft, 4-driving oil cylinder, 5-cylinder body, 6-driving piston, 7-oil inlet pipe, 8-oil inlet, 9-oil inlet part, 10-driving part, 11-driving helical spline, 12-driving gear, 13-driven wheel, 14-driving source, 15-vibration reduction assembly, 16-mounting frame, 17-rubber column, 18-mounting plate, 19-rotating bearing, 20-mounting box, 21-rack, 22-fixed frame, 23-pulley, 24-connecting plate, 25-fixed wheel, 26-sliding block, 27-sliding groove, 28-fixing pin shaft. DETAILED DESCRIPTION

[0027] The embodiments are only used for explaining the present application, and are not used for limiting the present application. Those skilled in the art can make modifications to the embodiments without creative contribution, as long as the modifications are within the scope of the present application.

[0028] As Figures 1-4The application provides the following technical scheme, a resonance-free vibration hammer, including shell 1, shell 1 rotationally arranged with a plurality of eccentric blocks 2, eccentric block 2 is rotationally arranged in shell 1 through rotating shaft 3, rotating shaft 3 is connected, shell 1 is located between rotating shaft 3 and is equipped with drive cylinder 4, drive cylinder 4 is connected with rotating shaft 3 and promotes drive cylinder 4 to be able to adjust the phase angle of eccentric block 2, shell 1 is the installation carrier for each component, a plurality of eccentric blocks 2 are rotationally arranged in shell 1 through rotating shaft 3, rotating shaft 3 is connected between the realization linkage, so that each eccentric block 2 is synchronously rotated to generate stable exciting force;Shell 1 is located between rotating shaft 3 and is equipped with drive cylinder 4 and is connected with rotating shaft 3, the phase angle of eccentric block 2 can be adjusted through the action of drive cylinder 4, the effective rotation range of eccentric block 2 can be controlled in the start and shutdown phase through the adjustment of the phase angle of eccentric block 2, and the actual eccentric moment of eccentric block 2 under different rotating speeds is changed;When the starting rotating speed of vibration hammer gradually increases or the shutdown rotating speed gradually reduces, the change process of exciting frequency can be avoided from the natural frequency interval of damping system or the residence time of exciting frequency in the natural frequency interval is shortened by adjusting the phase angle of eccentric block 2, so as to reduce the resonance phenomenon generated by the vibration frequency of starting across the resonance zone, reduce the resonance harm, drive cylinder 4 includes cylinder body 5 arranged between rotating shaft 3 of shell 1, drive piston 6 is arranged in cylinder body 5, oil inlet pipe 7 is arranged at the end of drive piston 6, oil inlet pipe 7 is provided with oil inlet 8 communicated with the inside of cylinder body 5, drive piston 6 can drive cylinder body 5 to rotate to make cylinder body 5 drive rotating shaft 3 to rotate and adjust the phase angle of eccentric block 2, cylinder body 5 is arranged between rotating shaft 3 of shell 1 and provides mounting space for drive piston 6;Drive piston 6 in cylinder body 5 can act under the action of oil pressure, oil inlet 8 is arranged in oil inlet pipe 7 at the end of drive piston 6 and communicated with the inside of cylinder body 5, hydraulic oil is introduced into the inside of cylinder body 5 through oil inlet 8, and the hydraulic oil pushes drive piston 6 to generate axial or circumferential movement;Drive piston 6 drives cylinder body 5 to rotate when it acts, cylinder body 5 is connected with rotating shaft 3 and drives rotating shaft 3 to rotate, finally the phase angle of eccentric block 2 fixed with rotating shaft 3 is adjusted, drive piston 6 includes oil inlet part 9 connected with oil inlet pipe 7 and drive part 10 connected with cylinder body 5, drive screw spline 11 is arranged on the inner wall of drive part 10 and cylinder body 5 to make drive piston 6 axially move and drive cylinder body 5 to rotate, drive piston 6 includes oil inlet part 9 connected with oil inlet pipe 7 and drive part 10 connected with cylinder body 5, oil inlet part 9 is used to receive hydraulic oil, drive part 10 and the inner wall of cylinder body 5 are both provided with drive screw spline 11 to form spline structure;When hydraulic oil enters cylinder body 5 through oil inlet 8 of oil inlet pipe 7, drive piston 6 is pushed to move axially, at this time, the drive screw spline 11 of drive part 10 is engaged with the drive screw spline 11 of the inner wall of cylinder body 5, and the axial movement of drive piston 6 is converted into the rotary motion of cylinder body 5.The cylinder 5 rotates to drive the rotating shaft 3 connected thereto to rotate, thereby adjusting the phase angle of the eccentric block 2. The cylinder 5 is provided with a driving gear 12 on both sides, and the rotating shaft 3 is uniformly distributed on the upper and lower sides of the cylinder 5 to promote the vertical arrangement of the eccentric block 2 in the casing 1. The rotating shaft 3 is provided with a driven gear 13, and the driving gear 12 is engaged with the driven gear 13 on the upper and lower sides, respectively, to promote the rotation of the cylinder 5 to drive the eccentric block to adjust the phase angle. The cylinder 5 is provided with a driving gear 12 on both sides to provide a gear transmission interface for power output. The rotating shaft 3 is uniformly distributed on the upper and lower sides of the cylinder 5, so that the eccentric block 2 connected with the rotating shaft 3 is vertically arranged in the casing 1. Each rotating shaft 3 is provided with a driven gear 13, and the driving gear 12 is engaged with the driven gear 13 on the upper and lower sides, respectively, to form a gear transmission mechanism. When the cylinder 5 rotates under the action of the driving oil cylinder 4, the driving gears 12 on both sides synchronously drive the driven gears 13 at the corresponding positions on the upper and lower sides to rotate. The driven gears 13 are fixedly connected with the rotating shaft 3, thereby synchronously driving the rotating shafts 3 on the upper and lower sides to rotate, and finally realizing the adjustment of the phase angle of the vertically arranged eccentric block 2.

[0029] As Figures 1-5The application provides the following technical scheme, a resonance-free vibration hammer, the rotating shaft 3 of the upper and lower sides of the cylinder body 5 is located on one side of the shell 1 and is provided with a driving source 14 capable of driving the eccentric block 2 to rotate, the driving source 14 is arranged on one side of the shell 1 and is connected with the rotating shaft 3 of the upper and lower sides of the cylinder body 5, so as to provide rotating power for the rotating shaft 3; when the driving source 14 is started, the rotating torque output by the driving source 14 is transmitted to the rotating shaft 3 of the upper and lower sides, so as to drive the eccentric block 2 fixed with the rotating shaft 3 to rotate synchronously, a periodic exciting force is generated through the rotation of the eccentric block 2, the shell 1 comprises a mounting box 20 for mounting the rotating shaft 3, the cylinder body 5, a driving wheel and a driven wheel 13 and a rack 21 arranged outside the mounting box 20, a damping assembly 15 is arranged between the mounting box 20 and the rack 21, the mounting box 20 serves as a mounting carrier for the rotating shaft 3, the cylinder body 5, the driving wheel and the driven wheel 13, and the mounting box 20 and the rack 21 are integrated to form a relatively independent vibration source module; the rack 21 provides an external support frame for the overall structure and a connecting interface with external equipment; the damping assembly 15 is arranged between the mounting box 20 and the rack 21, and flexible connection between the mounting box 20 and the rack 21 is realized through the elastic or damping characteristics of the damping assembly 15; the damping assembly 15 comprises a plurality of mounting racks 16 arranged on the two sides of the mounting box 20, a plurality of rubber columns 17 are fixedly arranged on the outer periphery of the mounting rack 16, the rubber columns 17 abut against the rack 21, the rubber columns 17 and the rack 21 are fixedly connected through mounting plates 18, the mounting racks 16 on the two sides of the mounting box 20 provide fixed support for the rubber columns 17, the rubber columns 17 are fixedly arranged on the outer periphery of the mounting rack 16 to form an elastic support structure surrounding the mounting rack 16; the rubber columns 17 are fixedly connected with the rack 21 through the mounting plates 18, so that a flexible force transmission path is formed between the mounting box 20 and the rack 21 through the mounting rack 16, the rubber columns 17 and the mounting plates 18; the driving source 14 is a hydraulic motor, the hydraulic motor is arranged on one side of the shell 1 and is connected with the rotating shaft 3 of the upper and lower sides of the cylinder body 5, the hydraulic system drives the hydraulic motor by inputting hydraulic oil, the hydraulic oil drives the rotor inside the motor to rotate, the rotating torque output by the rotor is directly transmitted to the rotating shaft 3 of the upper and lower sides, so as to drive the eccentric block 2 fixed with the rotating shaft 3 to rotate synchronously, and a periodic exciting force is generated when the eccentric block 2 rotates; the output rotating speed of the hydraulic motor is controlled by adjusting the oil supply amount of the hydraulic system, the change of the oil supply amount directly changes the hydraulic oil flow entering the hydraulic motor, and then the rotating speed of the rotor is adjusted, so that stepless adjustment of the rotating speed is realized; a rotating bearing 19 is arranged between the driving gear 12 and the cylinder body 5, the rotating bearing 19 is arranged between the driving gear 12 and the cylinder body 5, so as to provide radial and axial support for the driving gear 12 and allow relative rotation between the driving gear 12 and the cylinder body 5 or reduce the friction resistance when the two are fixedly connected; when the cylinder body 5 rotates under the action of the driving oil cylinder 4, the rotating bearing 19 can reduce the friction coefficient of the driving gear 12 during synchronous rotation with the cylinder body 5, reduce mechanical wear, limit the radial runout of the driving gear 12 at the same time, and ensure the coaxiality of the driving gear 12 and the cylinder body 5.

[0030] The fixed frame 22 is mounted at the rack end, and is connected with the rack 21 through the fixed pin shaft 28. The fixed frame 22 is provided with a plurality of pulleys 23 connected with the external steel rope at one side. A plurality of connecting plates 24 are axially arranged at the bottom of the pulley 23. The connecting plates 24 are provided with fixed wheels 25 at the end for winding and fixing the steel rope. The rack and the fixed frame 22 are provided with a plurality of opposite sliding blocks 26 along the length direction. The sliding blocks 26 are provided with sliding grooves 27 connected with the external sliding connection. The fixed frame 22 mounted at the rack end provides a support base for the related components. The plurality of pulleys 23 arranged at one side of the fixed frame 22 are used for guiding the external steel rope, which can reduce the friction loss when the steel rope contacts with the fixed frame 22, and keep the tension direction of the steel rope stable. The plurality of connecting plates 24 axially arranged at the bottom of the pulley 23 and the fixed wheels 25 at the end of the fixed frame 22 are used for winding and fixing the steel rope, which can enhance the firmness of the connection between the steel rope and the fixed frame 22, avoid the loosening or position deviation of the steel rope in the vibration operation process, and ensure the reliability of the tension transmission. The plurality of opposite sliding blocks 26 provided along the length direction of the rack and the fixed frame 22 and the sliding grooves 27 on the sliding blocks 26 realize the sliding connection between the rack and the fixed frame 22 or the external structure, allow the structure to have a certain relative displacement along the length direction in the vibration process, thereby buffering the vibration energy and reducing the resonance phenomenon, and also facilitate the adjustment of the working position of the equipment according to the construction requirement, and improve the operation adaptability.

[0031] The casing 1 provides an installation carrier for various components. The eccentric blocks 2 are arranged in the casing 1 through the rotating shafts 3. The rotating shafts 3 are connected through the connecting pieces to realize linkage. The phase angle of the eccentric blocks 2 is adjusted through the driving oil cylinder 4. The effective rotation range of the eccentric blocks 2 can be controlled in the starting and stopping stages. The actual eccentric moment of the eccentric blocks 2 at different rotating speeds is changed, so that the vibration frequency of the starting is beyond the resonance region, resonance is avoided, and the resonance harm is reduced.

Claims

1. A resonance-free vibration hammer comprising a casing, said casing being provided with a number of eccentric masses arranged in rotation, characterized in that: The eccentric block is arranged in the shell through rotating shafts, the rotating shafts are connected in linkage, a driving oil cylinder is arranged between the rotating shafts, and the driving oil cylinder is connected in linkage with the rotating shafts to enable the driving oil cylinder to adjust the phase angle of the eccentric block.

2. A resonance-free vibration hammer according to claim 1, characterized in that: The driving oil cylinder comprises a cylinder body arranged between the rotating shafts, a driving piston is arranged in the cylinder body, an oil inlet pipe is arranged at the end of the driving piston, the oil inlet pipe is provided with an oil inlet opening in communication with the inside of the cylinder body, and the driving piston can drive the cylinder body to rotate to enable the cylinder body to drive the rotating shafts to rotate and thus adjust the phase angle of the eccentric block.

3. A resonance-free vibration hammer according to claim 2, characterized in that: The driving piston comprises an oil inlet part connected with the oil inlet pipe and a driving part connected with the cylinder body, the driving part and the inner wall of the cylinder body are both provided with driving helical splines to enable the driving piston to move axially and drive the cylinder body to rotate.

4. A resonance-free vibration hammer according to claim 3, characterized in that: Both sides of the cylinder body are provided with driving gears, the rotating shafts are uniformly distributed on the upper and lower sides of the cylinder body to enable the eccentric blocks to be arranged vertically in the shell, the rotating shafts are all provided with driven wheels, the driving gears are respectively engaged with the driven wheels on the upper and lower sides to enable the cylinder body to rotate and drive the eccentric blocks to adjust the phase angle.

5. A non-resonant vibration hammer according to any one of claims 1-4, characterized in that: The rotating shafts on the upper and lower sides of the cylinder body are arranged on one side of the shell and are provided with a driving source capable of driving the eccentric blocks to rotate.

6. A resonance-free vibration hammer according to claim 5, characterized in that: The shell comprises a mounting box for mounting the rotating shafts, the cylinder body, the driving gears and the driven wheels, and a rack arranged outside the mounting box, a damping assembly is arranged between the mounting box and the rack.

7. A resonance-free vibration hammer according to claim 6, characterized in that: The damping assembly comprises a plurality of mounting racks arranged on both sides of the mounting box, a plurality of rubber columns are fixedly arranged on the outer periphery of the mounting racks, the rubber columns abut against the rack, and the rubber columns and the rack are fixedly connected through mounting plates.

8. A resonance-free vibration hammer according to claim 5, characterized in that: The driving source is a hydraulic motor.

9. A resonance-free vibration hammer according to claim 5, characterized in that: Rotary bearings are arranged between the driving gears and the cylinder body.

10. A resonance-free vibration hammer according to claim 1, characterized in that: A fixing rack is arranged at the end of the rack, the fixing rack and the rack are connected through a fixing pin, a plurality of pulleys are arranged on one side of the fixing rack and connected with external steel ropes, a plurality of connecting plates are arranged axially at the bottom of the fixing rack, the connecting plates are provided with fixing wheels at the ends for winding and fixing the steel ropes, the rack and the fixing rack are provided with a plurality of oppositely arranged sliding blocks along the length direction, and the sliding blocks are provided with sliding grooves connected with the outside in sliding connection.

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