A bidirectional vibrator and a construction method thereof

Abstract

The application discloses a bidirectional vibrator and a construction method thereof. The bidirectional vibrator is composed of a power body, a first excitation body, a second excitation body, a vibration head, a shock absorber, a power pipe cable, a water pipe and an air pipe. The first excitation body comprises a first shell, a main shaft sleeve rotatable and provided with a first clutch end face, a rotatable main shaft, a first clutch and a first eccentric block arranged on the main shaft sleeve. The first clutch completes a clutching action through the control of a first control pipe cable. The second excitation body comprises a second shell, a first bevel gear rotatable and provided with a second clutch end face, a second bevel gear meshing with the first bevel gear, a rotatable rotating shaft, an intermediate shaft, a first spur gear, a second spur gear meshing with the first spur gear, a second eccentric block and a second clutch. The second clutch completes a clutching action through the control of a second control pipe cable. The bidirectional vibrator can generate horizontal and vertical bidirectional excitation forces, can control the direction of the excitation force, can select the combination of the excitation direction and has high construction efficiency and good quality.

Description

Technical Field

[0001] This invention relates to a vibratory compaction device and construction method for foundation treatment in building engineering, specifically to a bidirectional vibratory compactor and its construction method. Background Technology

[0002] Vibro-compaction is a foundation treatment method. It involves using a vibro-compactor to generate horizontal vibration force, combined with high-pressure water or air, to compact loose foundation soil layers. Alternatively, it can vibro-compact holes in the foundation soil, backfill with gravel or other fillers, and then vibrate and compact these to form a reinforced structure (vibro-compacted pile). This reinforced structure and the surrounding foundation soil form a composite foundation, thereby improving the foundation's bearing capacity, reducing settlement, increasing stability, and enhancing its resistance to seismic liquefaction. It is widely used for reinforcing soft foundations such as those for hydropower dams, power stations, ports and wharves, petrochemical projects, and highways and railways.

[0003] Vibratory compactors are key equipment in vibratory compaction construction. Vibratory compactors are mainly divided into two categories according to their driving power: one is the submersible electric vibratory compactor powered by a submersible electric motor, and the other is the hydraulic vibratory compactor powered by a hydraulic motor. Currently, electric vibratory compactors are widely produced and used in my country.

[0004] The electric vibratory compactor mainly consists of a body, shock absorber, cable, water and air pipeline, submersible motor, coupling, main shaft, eccentric block, and exciter. The vibratory compactor is driven by a submersible motor to drive the main shaft, which in turn drives the eccentric block to rotate at high speed, generating a radially circulating horizontal excitation force. This causes the exciter to generate high-frequency vibrations that act on the soil for operation.

[0005] The general construction steps of the vibratory compaction method are as follows: a vibratory compactor with a long guide rod is lifted by a lifting device, the motor is started to make the vibratory compactor vibrate at high frequency, and at the same time the water / air pump is started to spray high-pressure water / air flow through the nozzle. Under the combined action of vibration and compaction, the vibratory compactor is sunk to the predetermined depth in the soil. After cleaning the hole, crushed stone or other filler is filled into the hole section by section from the ground, so that it is compacted by vibration. Once the required density is reached, the vibratory compactor can be lifted. This process is repeated until it is lifted to the ground, forming a large-diameter dense pile in the foundation to form a composite foundation with the original foundation. The main process is vibratory compaction hole making, hole cleaning, filling, and vibratory compaction.

[0006] The existing vibratory impactors described above have the following problems:

[0007] 1. Because the excitation force of the vibratory compactor is horizontal when it is used for drilling, when encountering relatively hard strata (such as gravel layers, hard sand and gravel layers, etc.) during the drilling process, the penetration force of the downward drilling is insufficient, the construction efficiency is low, and it may even be impossible to complete the vibratory compaction drilling to the predetermined depth.

[0008] 2. When encountering relatively hard strata, although other drilling rigs can be used to drill holes first, and then fill the holes with material and compact them with vibratory compaction to form piles, this method goes against the original mechanism of vibratory compaction for drilling and pile formation, and the overall effect and quality of foundation treatment are not good.

[0009] To address the aforementioned issues, utility model patent 202021636349.1 discloses a technical solution for "a vibratory impactor with horizontal and vertical vibration": adding vertical vibration to the original horizontal vibration of the vibratory impactor, thereby increasing the vertical excitation force and the penetration force of the strata.

[0010] However, this technical solution still has the following problems:

[0011] 1. As can be seen from its structure, the two eccentric blocks rotate in a linked and symmetrical manner in opposite directions. The excitation forces generated by the two eccentric blocks will cancel each other out, which greatly reduces the actual axial excitation effect.

[0012] 2. Due to structural limitations, the number of vertical excitation eccentric wheels that can be configured in this technical solution is significantly less than the number of horizontal excitation eccentric wheels, resulting in insufficient actual axial excitation force and preventing the vibratory impactor from efficiently penetrating the hard ground layer.

[0013] 3. The geological conditions change with depth. When encountering softer strata, horizontal vibration is more effective in compacting the soil and borehole walls. When encountering harder strata, vertical vibration is more effective in quickly penetrating the hard layer for efficient borehole formation. When borehole formation is complete and the pile is being constructed through staged filling, the combined horizontal and vertical vibration forces are more effective in efficiently compacting the pile, resulting in the best pile quality. However, because the horizontal and vertical vibration eccentric wheels in this technical solution are coaxially linked, it suffers from limitations in adapting to changes in geological conditions and construction stages, in actively selecting and controlling the optimal vibration force direction and combination, and in achieving the highest construction efficiency and best construction results.

[0014] Therefore, how to solve the above-mentioned technical problems is an urgent issue that needs to be addressed by those skilled in the art. Summary of the Invention

[0015] In view of this, the purpose of the present invention is to provide a bidirectional vibratory beater and its construction method that can generate horizontal and vertical bidirectional excitation forces, have large excitation forces, controllable excitation force direction, selectable excitation direction combinations, high construction efficiency and quality.

[0016] To achieve the above objectives, the present invention provides the following technical solution:

[0017] A bidirectional vibratory impactor, comprising a power body, a first exciter, a second exciter, a vibratory impact head, a damper, a power cable, a water pipe, and an air pipe;

[0018] The power unit includes: a power housing, a prime mover, and a power cable; the output shaft end of the prime mover is provided with a coupling;

[0019] The first exciter includes: a first housing, a bearing seat, a main shaft sleeve, a main shaft, a first clutch, and a first eccentric block; the main shaft sleeve is rotatably fixed to the first housing by means of a first bearing and a first locking nut, and the upper part of the main shaft sleeve is provided with a first clutch end face; the upper end and lower part of the main shaft are each provided with spline A and spline B, and are rotatably placed in the main shaft sleeve by means of a second bearing; the first clutch is fixed to the bearing seat of the first housing, and the clutch action is completed by the operation of a first control cable; the first eccentric block is fixed to the main shaft sleeve by means of a first flat key;

[0020] The second exciter includes: a second housing, a first bevel gear, a second bevel gear, a rotating shaft, an intermediate shaft, a first spur gear, a second spur gear, a second eccentric block, and a second clutch; the first bevel gear is rotatably fixed to the second housing by means of a fourth bearing, a second locking nut, and a pressure cap, and the upper part of the first bevel gear is provided with a second clutch end face; the rotating shaft is rotatably fixed to the second housing by means of a fifth bearing and an end cap, and the second bevel gear, the first spur gear, and the paired second eccentric blocks are fixed to the rotating shaft by means of a second flat key, and the second bevel gear meshes with the first bevel gear; the intermediate shaft is fixed to the second housing, and the second spur gear is rotatably supported on the intermediate shaft by means of a sixth bearing, and the second spur gear meshes with the first spur gear; the second clutch is fixed to the second housing, and the clutch action is completed by the operation of a second control cable;

[0021] The vibratory head is equipped with a nozzle; the damper is connected between the bidirectional vibratory impactor and the guide rod; the power cable, the water pipe and the air pipe respectively provide power and inject water and air into the bidirectional vibratory impactor.

[0022] A construction method for a bidirectional vibratory compactor includes the following steps:

[0023] The bidirectional vibratory compactor is connected to the guide rod and mounted on the vibratory drilling rig. After the vibratory drilling rig moves to the pile position, the prime mover of the bidirectional vibratory compactor is started to generate high-frequency vibration. At the same time, the water pump and air pump are started to spray high-pressure water and air through the nozzle. With the traction of the steel wire rope, the bidirectional vibratory compactor at the front end of the guide rod enters the stratum. Under the action of the excitation force of the bidirectional vibratory compactor, the high-pressure water and air, and the weight of the bidirectional vibratory compactor itself, the hole is continuously vibrated and compacted to the design depth. After cleaning the hole, crushed stone is filled in sections. With the lifting of the steel wire rope, the bidirectional vibratory compactor at the front end of the guide rod is lifted upward while vibrating and compacting the crushed stone filling material until the vibratory compaction of the crushed stone pile is completed.

[0024] (1) In the process of vibratory drilling, horizontal excitation is used to drill holes in generally softer formations. The specific method is as follows: the first clutch of the bidirectional vibratory drill is closed: that is, the prime mover is combined with the clutch end face of the upper part of the main shaft sleeve through the coupling, spline A and the first clutch, to drive the first eccentric block on the main shaft sleeve to rotate horizontally and generate horizontal excitation force to drill holes.

[0025] (2) When encountering a hard stratum during the vibratory drilling process, and the bidirectional vibratory drill has difficulty drilling and cannot advance, the vertical excitation method is used to drill the hole. The specific method is as follows: the first clutch of the bidirectional vibratory drill is opened: that is, the first clutch is disengaged from the clutch end face on the upper part of the main shaft sleeve, and the first eccentric block stops rotating horizontally; the second clutch is closed: that is, the prime mover drives the main shaft to rotate through the coupling, and the second clutch engages with the clutch end face on the upper part of the first bevel gear to drive the first bevel gear to rotate. The second bevel gear meshing with it drives the coaxial second eccentric block to rotate vertically and generate vertical excitation force; at the same time, due to the meshing of the first flat gear and the second flat gear, the next set of second eccentric blocks is driven to rotate vertically in sequence, generating vertical excitation force to drill the hole;

[0026] (3) In the process of vibratory compaction and compaction of crushed stone filling, in order to improve construction efficiency and pile quality, horizontal and vertical vibration are used at the same time. The specific method is as follows: the first clutch and the second clutch of the bidirectional vibratory compactor are closed at the same time, the prime mover drives the first eccentric block and the second eccentric block to rotate at the same time through transmission, and generates horizontal and vertical vibration forces at the same time, and performs bidirectional vibration compaction operation.

[0027] The bidirectional vibratory compactor and its construction method provided by this invention have the following positive effects and advantages:

[0028] 1. According to the present invention, the horizontal excitation force and vertical excitation force of the bidirectional vibratory shock absorber can be controlled and selected in different directions, which is flexible, mobile and highly adaptable.

[0029] 2. According to the present invention, the coaxial pair of second eccentric blocks rotate in the same phase, and the excitation forces generated by the two second eccentric blocks are in the same direction and superimposed on each other. The non-coaxial pair of second eccentric blocks also rotate in the same phase, and the excitation forces generated by each second eccentric block are in the same direction and superimposed on each other, which can generate a sufficiently large vertical excitation force.

[0030] 3. According to the present invention, since the bidirectional vibratory compactor has a large excitation force and can actively select and control the optimal excitation force direction and combination according to construction needs, it can adapt to various soft and hard geological conditions and achieve the highest efficiency construction and the best quality pile formation.

[0031] For example, when encountering softer strata, horizontal vibration is more conducive to compacting the soil and borehole walls; when encountering harder strata, vertical vibration is more conducive to quickly penetrating the hard layer and efficiently creating a borehole; when the borehole is created and the pile is formed by filling the fill layer in sections, using a composite vibration force that acts simultaneously in the horizontal and vertical directions is more conducive to efficiently compacting the pile body, resulting in a better quality pile. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0033] Figure 1 This is a front view of Embodiment 1 of the present invention: a bidirectional vibratory impactor.

[0034] Figure 2 yes Figure 1 The K-direction view of the bidirectional vibratory impactor is shown.

[0035] Figure 3 yes Figure 1 The diagram shows a cross-sectional view (AA) of the bidirectional vibratory impactor.

[0036] Figure 4 for Figure 3 A magnified view of part D;

[0037] Figure 5 for Figure 3 A magnified view of part E in the image;

[0038] Figure 6 yes Figure 3 The image shows a BB cross-sectional view of the bidirectional vibratory impactor.

[0039] Figure 7 yes Figure 3 The CC cross-sectional view of the bidirectional vibratory impactor shown.

[0040] Figure 8 yes Figure 1 The diagram shows the construction status of a bidirectional vibratory compactor mounted on a vibratory drilling rig.

[0041] Figures 1 to 8 The accompanying figure labels are as follows:

[0042] 1 is a bidirectional vibratory shock absorber; 2 is a power body; 2a is a power housing; 2b is a prime mover; 2c is a coupling; 3 is a first exciter; 3a is a first housing; 3b is a bearing seat; 3c is a main shaft sleeve; 3d is a main shaft; 3e is a first clutch; 3f is a first eccentric block; 3g is a first bearing; 3h is a first locking nut; 3i is a first clutch end face; 3j is spline A; 3k is spline B; 3m is a second bearing; 3n is a third bearing; 3p is a first control cable; 3q is a first flat key; 4 is a second exciter; 4a is a second housing; 4b is a first bevel gear; 4c is... 4d is the second bevel gear, 4e is the intermediate shaft, 4f is the first spur gear, 4g is the second spur gear, 4h is the second eccentric block, 4i is the second clutch, 4j is the fourth bearing, 4k is the second locking nut, 4m is the pressure cap, 4n is the second clutch end face, 4p is the fifth bearing, 4r is the end cap, 4s is the second flat key, 4t is the sixth bearing, 4u is the second control cable, 5 is the vibratory punch, 5a is the first nozzle, 5b is the second nozzle, 6 is the vibration damper, 7 is the power cable, 8 is the water pipe, 9 is the air pipe, 20 is the vibratory drill, 21 is the guide rod, and 22 is the wire rope. Detailed Implementation

[0043] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0044] The core of this invention is to provide a bidirectional vibratory beater and its construction method that can generate horizontal and vertical bidirectional excitation forces, have large excitation forces, controllable excitation force direction, selectable excitation direction combinations, high construction efficiency, and good quality.

[0045] Example 1: A bidirectional vibratory beater.

[0046] Please refer to Figures 1-7 .

[0047] A bidirectional vibratory impactor 1 is composed of a power body 2, a first exciter 3, a second exciter 4, a vibratory impact head 5, a damper 6, a power cable 7, a water pipe 8, and an air pipe 9.

[0048] The power unit 2 includes: a power housing 2a, a prime mover 2b, and a power cable 7; the prime mover 2b can be an electric motor, a hydraulic motor, or a pneumatic motor, and the output shaft end of the prime mover 2b is provided with a coupling 2c.

[0049] The first exciter 3 includes: a first housing 3a, a bearing seat 3b, a main shaft sleeve 3c, a main shaft 3d, a first clutch 3e, and a first eccentric block 3f; the main shaft sleeve 3c is rotatably fixed to the first housing 3a by means of a first bearing 3g and a first locking nut 3h, and the upper part of the main shaft sleeve 3c is provided with a first clutch end face 3i; the upper and lower parts of the main shaft 3d are each provided with spline A 3j and spline B 3k, and are rotatably placed in the main shaft sleeve 3c by means of a second bearing 3m and a third bearing 3n; the first clutch 3e is fixed to the bearing seat 3b of the first housing 3a, and the clutch action is completed by the operation of the first control cable 3p; the first eccentric block 3f is fixed to the main shaft sleeve 3c by means of a first flat key 3q; the number of first eccentric blocks 3f is set according to the excitation force requirement;

[0050] The second exciter 4 includes: a second housing 4a, a first bevel gear 4b, a second bevel gear 4c, a rotating shaft 4d, an intermediate shaft 4e, a first spur gear 4f, a second spur gear 4g, a second eccentric block 4h, and a second clutch 4i; the first bevel gear 4b is rotatably fixed to the second housing 4a by means of a fourth bearing 4j, a second locking nut 4k, and a pressure cap 4m, and the upper part of the first bevel gear 4b is provided with a second clutch end face 4n; the rotating shaft 4d is rotatably fixed to the second housing 4a by means of a fifth bearing 4p and an end cap 4r, and the second bevel gear 4c, the first bevel gear 4b, the second bevel gear 4c, the second bevel gear 4d ... A spur gear 4f and a pair of second eccentric blocks 4h are fixed to the rotating shaft 4d by a second spur key 4s. A second bevel gear 4c meshes with a first bevel gear 4b. The intermediate shaft 4e is fixed to the second housing 4a. The second spur gear 4g is rotatably supported on the intermediate shaft 4e by a sixth bearing 4t. The second spur gear 4g meshes with the first spur gear 4f. The second clutch 4i is fixed to the second housing 4a and the clutch action is completed by the operation of the second control cable 4u. The number of the pairs of second eccentric blocks 4h is set according to the excitation force requirements.

[0051] The vibratory head 5 is provided with a first nozzle 5a and a second nozzle 5b; the damper 6 is connected between the bidirectional vibratory impactor 1 and the guide rod 21; the power cable 7, water pipe 8 and air pipe 9 respectively provide power to the bidirectional vibratory impactor 1 and inject water and air.

[0052] Example 2: A construction method for a bidirectional vibratory compactor.

[0053] Please refer to Figures 1-8 .

[0054] The construction method of this bidirectional vibratory compactor includes the following steps:

[0055] The bidirectional vibratory compactor 1 is connected to the guide rod 21 and mounted on the vibratory drilling rig 20; the vibratory drilling rig 20 moves to the pile position; the prime mover 2b is started to make the bidirectional vibratory compactor 1 generate high-frequency vibration, and at the same time the water / air pump is started to spray high-pressure water / air flow through nozzles 5a and 5b; with the traction of the steel wire rope 22 at the top of the guide rod 21, the bidirectional vibratory compactor 1 at the front end of the guide rod 21 enters the stratum, and under the action of the excitation force of the bidirectional vibratory compactor, the high-pressure water / air flow and its own weight, it continues to vibrate downward to make a hole to the design depth; after cleaning the hole, crushed stone is filled in sections; with the lifting of the steel wire rope 22, the bidirectional vibratory compactor 1 at the front end of the guide rod 21 is lifted upward while vibrating and compacting the crushed stone filling material, until the vibratory crushed stone pile construction operation is completed.

[0056] (1) In the process of vibratory drilling, horizontal excitation is used to drill holes in generally softer strata. The specific method is as follows: the first clutch 3e of the bidirectional vibratory drill 1 is closed: that is, the prime mover 2b is combined with the clutch end face 3i on the upper part of the main shaft sleeve 3c through the coupling 2c, spline A 3j and with the help of the first clutch 3e, to drive the first eccentric block 3f on the main shaft sleeve 3c to rotate horizontally and generate horizontal excitation force to drill holes.

[0057] (2) When encountering a hard formation during the vibratory drilling process, if the vibratory drill has difficulty drilling downwards or the advance is slow, the vertical excitation method is used to drill the hole. The specific method is as follows: the first clutch 3e of the bidirectional vibratory drill 1 is opened, that is, the first clutch 3e is disengaged from the clutch end face 3i on the upper part of the main shaft sleeve 3c, and the first eccentric block 3f stops rotating horizontally; the second clutch 4i is closed: that is, the prime mover 2b drives the main shaft 3d to rotate through the coupling 2c, and the second clutch 4i is engaged with the clutch end face 4n on the upper part of the first bevel gear 4b to drive the first bevel gear 4b to rotate. The second bevel gear 4c meshing with it drives the coaxial second eccentric block 4h to rotate vertically and generate vertical excitation force; at the same time, due to the meshing of the first spur gear 4f and the second spur gear 4g, the next set of second eccentric blocks 4h is driven to rotate vertically in sequence, generating vertical excitation force to drill the hole;

[0058] (3) In the process of vibratory compaction and compaction of crushed stone filling, in order to improve construction efficiency and pile quality, horizontal and vertical vibration can be used at the same time. The specific method is as follows: the first clutch 3e and the second clutch 4i of the bidirectional vibratory compactor 1 are closed at the same time, the prime mover 2b drives the first eccentric block 3f group and the second eccentric block 4n group to rotate at the same time through the transmission chain, and generates horizontal and vertical vibration forces at the same time, and performs bidirectional vibration compaction operation at the same time.

[0059] The present invention has been described in conjunction with the above embodiments. However, by making some appropriate changes and adjustments to the component structure, combination method, and construction steps of the bidirectional vibratory compactor, different types of bidirectional vibratory compactors can be derived within the scope of the present invention, which can be widely used in the foundation construction of various projects.

[0060] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0061] The bidirectional vibratory compactor and its construction method provided by this invention have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this invention. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core ideas of this invention. It should be noted that those skilled in the art can make several improvements and modifications to this invention without departing from the principles of this invention, and these improvements and modifications also fall within the protection scope of the claims of this invention.

Claims

1. A bidirectional vibratory beater, characterized in that: The bidirectional vibratory impactor consists of a power unit, a first exciter, a second exciter, a vibratory impact head, a damper, a power cable, a water pipe, and an air pipe. The power unit includes: a power housing, a prime mover, and a power cable; the output shaft end of the prime mover is provided with a coupling; The first exciter includes: a first housing, a bearing seat, a main shaft sleeve, a main shaft, a first clutch, and a first eccentric block; the main shaft sleeve is rotatably fixed to the first housing by means of a first bearing and a first locking nut, and the upper part of the main shaft sleeve is provided with a first clutch end face; the upper end and lower part of the main shaft are each provided with spline A and spline B, and are rotatably placed in the main shaft sleeve by means of a second bearing; the first clutch is fixed to the bearing seat of the first housing, and the clutch action is completed by the operation of a first control cable; the first eccentric block is fixed to the main shaft sleeve by means of a first flat key; The second exciter includes: a second housing, a first bevel gear, a second bevel gear, a rotating shaft, an intermediate shaft, a first spur gear, a second spur gear, a second eccentric block, and a second clutch; the first bevel gear is rotatably fixed to the second housing by means of a fourth bearing, a second locking nut, and a pressure cap, and the upper part of the first bevel gear is provided with a second clutch end face; the rotating shaft is rotatably fixed to the second housing by means of a fifth bearing and an end cap, and the second bevel gear, the first spur gear, and the paired second eccentric blocks are fixed to the rotating shaft by means of a second flat key, and the second bevel gear meshes with the first bevel gear; the intermediate shaft is fixed to the second housing, and the second spur gear is rotatably supported on the intermediate shaft by means of a sixth bearing, and the second spur gear meshes with the first spur gear; the second clutch is fixed to the second housing, and the clutch action is completed by the operation of a second control cable; The vibratory head is equipped with a nozzle; the damper is connected between the bidirectional vibratory impactor and the guide rod; the power cable, the water pipe and the air pipe respectively provide power and inject water and air into the bidirectional vibratory impactor.

2. A construction method for a bidirectional vibratory compactor, comprising the following steps: The bidirectional vibratory compactor is connected to the guide rod and mounted on the vibratory drilling rig. After the vibratory drilling rig moves to the pile position, the prime mover of the bidirectional vibratory compactor is started to generate high-frequency vibration. At the same time, the water pump and air pump are started to spray high-pressure water and air through the nozzle. With the traction of the steel wire rope, the bidirectional vibratory compactor at the front end of the guide rod enters the stratum. Under the action of the excitation force of the bidirectional vibratory compactor, the high-pressure water and air, and the weight of the bidirectional vibratory compactor itself, the hole is continuously vibrated and compacted to the design depth. After cleaning the hole, crushed stone is filled in sections. With the lifting of the steel wire rope, the bidirectional vibratory compactor at the front end of the guide rod is lifted upward while vibrating and compacting the crushed stone filling material until the vibratory compaction of the crushed stone pile is completed. Its features are: (1) In the process of vibratory drilling, horizontal excitation is used to drill holes in generally softer formations. The specific method is as follows: the first clutch of the bidirectional vibratory drill is closed: that is, the prime mover is combined with the clutch end face of the upper part of the main shaft sleeve through the coupling, spline A and the first clutch, to drive the first eccentric block on the main shaft sleeve to rotate horizontally and generate horizontal excitation force to drill holes. (2) When encountering a hard stratum during the vibratory drilling process, and the bidirectional vibratory drill has difficulty drilling and cannot advance, the vertical excitation method is used to drill the hole. The specific method is as follows: the first clutch of the bidirectional vibratory drill is opened: that is, the first clutch is disengaged from the clutch end face on the upper part of the main shaft sleeve, and the first eccentric block stops rotating horizontally; the second clutch is closed: that is, the prime mover drives the main shaft to rotate through the coupling, and the second clutch engages with the clutch end face on the upper part of the first bevel gear to drive the first bevel gear to rotate. The second bevel gear meshing with it drives the coaxial second eccentric block to rotate vertically and generate vertical excitation force; at the same time, due to the meshing of the first flat gear and the second flat gear, the next set of second eccentric blocks is driven to rotate vertically in sequence, generating vertical excitation force to drill the hole; (3) In the process of vibratory compaction and compaction of crushed stone filling, in order to improve construction efficiency and pile quality, horizontal and vertical vibration are used at the same time. The specific method is as follows: the first clutch and the second clutch of the bidirectional vibratory compactor are closed at the same time, the prime mover drives the first eccentric block and the second eccentric block to rotate at the same time through transmission, and generates horizontal and vertical vibration forces at the same time, and performs bidirectional vibration compaction operation.

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