CN220748203U - A transverse high-frequency vibration drill rod suitable for soft foundation - Google Patents

Abstract

The utility model provides a transverse high-frequency vibration drill rod suitable for soft foundation, belonging to the technical field of construction equipment. It includes a power input system, a ratchet rack power conversion system, a power output system for transverse vibration, and a drill rod. The power input system is a mechanism with a reciprocating linear motion input method represented by a pneumatic piston vibrator. The ratchet rack power conversion system includes a fixed ratchet and a rack that follows the piston's reciprocating motion and a small left and right motion. The power output mechanism includes a triangular cam, a direct-acting roller eccentric block, and a direct-acting roller eccentric block fixing device. The utility model has the advantages of simple structure, miniaturized structure, ability to perform transverse vibration, high vibration frequency, and economic and durable.

Description

A transverse high-frequency vibration drill rod suitable for soft foundation

Technical Field

The utility model belongs to the technical field of building construction equipment and relates to a transverse high-frequency vibration drill rod suitable for soft foundations.

Background technique

my country has a vast territory and widespread distribution of weak foundations. It is particularly noteworthy that many of the three major urban agglomerations of Beijing-Tianjin-Hebei, Yangtze River Delta and Pearl River Delta are located in plain areas where weak foundations such as saturated silt, silt sand and fine sand are widely distributed. Under the action of moderate to strong earthquakes, weak foundations will cause liquefaction and subsidence and loss of foundation bearing capacity, resulting in additional settlement of foundations and soil layers, overturning, tilting, cracking and sliding of structures and foundations, which may cause various infrastructure and buildings to fail to operate normally, and partial or even complete loss of functions.

The liquefaction of soft foundations causes great damage to buildings during earthquakes, but in actual engineering, the liquefaction of sand can be utilized. Recently, vibration grouting has become a new construction method for treating soft foundations. The basic principle of vibration grouting technology is to use mechanical vibration to force saturated fine sand and silt foundations to liquefy and lose strength, and then inject grout into the foundation. This method first forms a softening zone in the sand foundation through the impact vibration of the vibrating machine, and then uses a grouting pipe to press the grout into the sand.

As the liquefaction effect of soft foundation sand becomes more obvious with the increase of vibration frequency, especially when the frequency of vibration load is close to the natural frequency of sand, the liquefaction effect is most obvious because of the resonance effect. However, the existing technology can only apply vibration to the top of the drill pipe, and the vibration is difficult to transmit to the end of the drill pipe. In addition, the frequency of existing commonly used vibrators almost does not exceed 150HZ, but the natural frequency of sand can reach 800HZ, and the vibration frequency of existing pneumatic vibrators is low.

Utility Model Content

The utility model aims to provide a transverse high-frequency vibration drill rod suitable for soft foundation in view of the above problems existing in the prior art.

The purpose of the utility model can be achieved through the following technical solutions: a transverse high-frequency vibration drill rod suitable for soft foundation, characterized in that it includes a power input system consisting of a pneumatic piston vibrator whose upper end is fixed by a baffle and a piston rod connected to the piston inside the vibrator, a power conversion system consisting of a protective shell connected to the lower end of the piston rod, a spring, a rack, a rack lateral motion control track, a control track fixing rod, a ratchet, a large gear driven by the ratchet to rotate synchronously, a ratchet large gear fixing connecting rod, a bearing moving along the control track, and a Y-type connecting rod controlling the lateral movement of the rack, and a power output system consisting of a driven large gear, a driven small gear, a triangular cam, a driven gear and a triangular cam fixing connecting rod, a linear roller eccentric block, a bearing block, and a linear roller eccentric block fixing device.

Furthermore, the vibrator power input system is a pneumatic piston vibrator, a hydraulic piston vibrator or an electric piston vibrator.

Furthermore, the vibrator is limited in vertical displacement by the upper and lower baffles, and at the same time, the piston rod is connected to the internal piston of the vibrator to drive the piston rod to perform vertical reciprocating linear motion. The protective shell is connected to the piston rod, driving the rack inside the protective shell to perform vertical reciprocating linear motion synchronously.

Furthermore, the top and bottom of the rack are tightly fitted with the protective shell, and there is a set of springs on the top and bottom left and right sides. The rack lateral motion control track is connected to the rack through a bearing that moves along the control track and a Y-shaped connecting rod that controls the lateral motion of the rack. At the same time, the track is connected to the inner wall of the drill pipe through a control track fixing rod, and the track has a right inclination angle of 2°.

Furthermore, the ratchet wheel and the large gear driven by the ratchet wheel to rotate synchronously are fixed together through a ratchet wheel and large gear fixing connecting rod.

Furthermore, the driven large gear is driven to rotate by the large gear that rotates synchronously with the ratchet, and then the driven large gear drives the driven small gear and the triangular cam to rotate synchronously. The driven large gear, the driven small gear and the triangular cam are fixed together by the driven gear and the triangular cam fixing rod.

Furthermore, the linear roller eccentric block performs transverse reciprocating linear motion under the squeezing effect of the triangular cam rotating on the bearing block. The linear roller eccentric block is fixed on a horizontal plane by a linear roller eccentric block fixing device, and the bearing block is connected to the linear roller eccentric block.

Furthermore, the baffle can effectively fix the vibrator as a whole, reduce energy loss, and thus enable the piston rod to generate vertical reciprocating linear motion more stably.

Furthermore, the rack lateral motion control track has a stepped drop at the top and the bottom, which can prevent the bearing from returning to the original route.

Furthermore, the middle part of the bearing that moves along the control track is a group of springs to ensure that the bearing can move in accordance with the track.

Furthermore, the track has a 2° right inclination angle to ensure that the rack does not contact the ratchet when it is away from the ratchet, and can also increase the compression of the spring to ensure that the bearing has sufficient elastic force to push the bearing and spring into the other side of the track when it moves to the highest and lowest points of the track.

Furthermore, the linear roller eccentric block fixing device is connected to the inner wall of the drill pipe, which can limit the linear roller eccentric block to move only in the horizontal direction.

The beneficial effects of the utility model are:

1. The number of teeth on the rack is twice that of the ratchet, and the number of teeth on the large gear driven by the ratchet is twice that of the driven gear. When the piston rod reciprocates for one cycle, the ratchet rotates 4 times and the driven gear rotates 8 times.

2. When the triangular cam rotates one circle, the linear roller eccentric block can reciprocate three cycles, that is, it hits the inner wall of the drill pipe six times. Therefore, when the vibrator vibrates for one cycle, the present invention can output 48 cycles of lateral vibration.

3. Through the high-frequency vibration of the surrounding soil during the operation of the drill rod, the soft foundation is vibrated and compacted, and then the bearing capacity and stability of the foundation are improved through grouting.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a front structural schematic diagram of the drill rod mechanism when the piston rod just starts to move upward.

FIG. 2 is a front view of the structure of the drill rod mechanism during the upward movement of the piston rod.

FIG3 is a front structural schematic diagram of the drill rod mechanism when the piston rod moves upward to the limit position.

FIG4 is a front view of the structure of the drill rod mechanism during the downward movement of the piston rod.

FIG. 5 is a side view of the drill rod mechanism when the piston rod just starts to move upward.

FIG. 6 is a top view of a section of the lower portion of the piston rod in FIG. 1 .

FIG. 7 is a cross-sectional view of the rack lateral motion control track.

FIG. 8 is a schematic diagram of a triangular cam and a driven pinion and a fixing rod for both.

FIG. 9 is a schematic diagram of the linear roller eccentric block and the bearing block and their fixing device.

FIG. 10 is a schematic diagram of a rack ratchet mechanism.

FIG. 11 is a schematic diagram of a control track, a track bearing, and a control track fixing rod.

In the figure, 1, drill rod, 2, baffle, 3, pneumatic piston vibrator, 4, piston rod, 5, protective shell, 6, spring, 7, rack, 8, rack lateral motion control track, 9, control track fixing rod, 10, ratchet, 11, large gear driven by ratchet to rotate synchronously, 12, direct-acting roller eccentric block, 13, 14, direct-acting roller eccentric block fixing device, 15, bearing block, 16, driven large gear, 17, driven small gear, 18, driven gear and triangular cam fixing connecting rod, 19, triangular cam, 20, ratchet large gear fixing connecting rod, 21, bearing moving along the control track, 22, Y-type connecting rod for controlling the lateral movement of the rack.

Detailed ways

The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

The utility model comprises a power input system consisting of a pneumatic piston vibrator 3 whose upper end is fixed by a baffle 2 and a piston rod 4 connected to the piston inside the vibrator, a power conversion system consisting of a protective shell 5 connected to the lower end of the piston rod, a spring 6, a rack 7, a rack lateral motion control track 8, a control track fixing rod 9, a ratchet 10, a large gear 11 driven by the ratchet to rotate synchronously, a ratchet large gear fixing connecting rod 20, a bearing 21 moving along the control track, and a Y-shaped connecting rod 22 controlling the lateral motion of the rack, and a power output system consisting of a driven large gear 16, a driven small gear 17, a triangular cam 19, a driven gear and triangular cam fixing connecting rod 18, a linear roller eccentric block 12, a bearing stopper 15, and linear roller eccentric block fixing devices 13 and 14.

The vibrator power input system is a pneumatic piston vibrator 3, a hydraulic piston vibrator or an electric piston vibrator.

The vibrator is limited in vertical displacement by the upper and lower baffles 2. At the same time, the piston rod 4 is connected to the internal piston of the vibrator to drive the piston rod 4 to perform vertical reciprocating linear motion. The protective shell 5 is connected to the piston rod 4, driving the rack 7 in the protective shell 5 to perform vertical reciprocating linear motion synchronously.

The top and bottom of the rack 7 are tightly fitted with the protective shell 5. At the same time, there is a group of springs 6 on the top and bottom left and right sides. The rack lateral movement control track 8 is connected to the rack 7 through a bearing 21 that moves along the control track and a Y-shaped connecting rod 22 that controls the lateral movement of the rack. At the same time, the track is connected to the inner wall of the drill pipe 1 through a control track fixing rod 9, and the track has a right inclination angle of 2°.

The ratchet 10 and the large gear 11 driven by the ratchet to rotate synchronously are fixed together through the ratchet large gear fixing connecting rod 20 .

The driven large gear 16 is driven to rotate by the large gear 11 which rotates synchronously with the ratchet, and then the driven large gear 16 drives the driven small gear 17 and the triangular cam 19 to rotate synchronously. The driven large gear 16, the driven small gear 17 and the triangular cam 19 are fixed together by a loose gear and a triangular cam fixing rod 18.

The linear roller eccentric block 12 performs transverse reciprocating linear motion under the squeezing effect of the triangular cam 19 rotating on the bearing block 15. The linear roller eccentric block 12 is fixed on a horizontal plane by the linear roller eccentric block fixing devices 13 and 14, and the bearing block 15 is connected to the linear roller eccentric block 12.

The baffle 2 can effectively fix the vibrator 3 as a whole, reduce energy loss, and thus enable the piston rod 4 to generate vertical reciprocating linear motion more stably.

The rack lateral motion control track 8 has a stepped drop at the top and the bottom, which can effectively prevent the bearing 21 from returning to the original route.

The middle part of the bearing 21 that moves along the control track is a group of springs to ensure that the bearing can move in accordance with the track 8.

The right tilt angle of 2° of the track 8 can ensure that the rack 7 does not contact the ratchet when it is away from the ratchet 10, and can also increase the compression of the spring 6 to ensure that the bearing 21 has sufficient elastic force to push the bearing and the spring into the other side of the track when it moves to the highest and lowest points of the track.

The linear roller eccentric block fixing device 13 is connected to the inner wall of the drill rod 1 and can limit the linear roller eccentric block so that it can only move in the horizontal direction.

work process:

The piston rod moves upward, refer to Figure 1: the piston in the vibrator 3 drives the piston rod 4 to start moving upward, the piston rod drives the protective shell 5 and the rack 7 to move upward with the piston rod, and the bearing 21 moving along the control track moves upward along the right part of the track under the action of the spring force on the rack and the track step structure. Since the rack lateral movement control track 8 and the control track fixing rod 9 are fixed in shape, the rack is slightly moved laterally by the bearing moving along the track, so that the left and right racks both want to move slightly to the right, and the right springs 6 at the top and bottom of the left and right racks are forced to start compression. The left rack engages with the ratchet 10 and starts to push the ratchet to rotate clockwise, and the right rack is away from the ratchet and does not contact the ratchet. After the ratchet is driven to rotate, the ratchet drives the synchronously rotating large gear 11 and the driven large and small gears 16 and 17 to rotate together, and the triangular cam 19 rotates accordingly. Under the extrusion of the triangular cam and the bearing block 15, the eccentric block 12 is driven to move horizontally and linearly, and the eccentric block transmits horizontal vibration by hitting the inner wall of the drill pipe.

The piston rod moves up to the limit position, refer to Figure 2: when the piston and the piston rod 4 move up to the highest height, the bearing 21 moving along the control track also rises to the highest height of the track 8. At this time, the springs 6 at the top and bottom of the left and right racks 7 will release the elastic force, and the stepped internal structure of the track will push the bearing into the left part of the track, the left rack will move away from the ratchet 10, and the right rack will engage with the ratchet at the same time.

The piston rod moves downward, refer to Figure 3: the piston in the vibrator 3 drives the piston rod 4 to start moving downward, the piston rod drives the protective shell 5 and the rack 7 to move downward with the piston rod, and the bearing 21 moving along the control track moves downward along the left part of the track under the action of the spring force on the rack and the track step structure. Since the rack lateral movement control track 8 and the control track fixing rod 9 are fixed in shape, the rack is slightly moved laterally by the bearing moving along the track, so that the left and right racks both want to move slightly to the left, and the left springs 6 at the top and bottom of the left and right racks are forced to start compression, the right rack meshes with the ratchet and starts to push the ratchet 10 to rotate clockwise, and the left rack is away from the ratchet and does not contact the ratchet. After the ratchet is driven to rotate, the ratchet drives the synchronously rotating large gear 11 and the driven large and small gears 16 and 17 to rotate together, and the triangular cam 19 rotates accordingly, and the eccentric block 12 is driven to move horizontally and linearly under the extrusion of the triangular cam and the bearing block 15, and the eccentric block transmits horizontal vibration by hitting the inner wall of the drill pipe.

The piston rod moves downward to the limit position: when the piston and the piston rod 4 move downward to the lowest height, the bearing 21 moving along the control track also rises to the lowest height of the track 8. At this time, the springs 6 at the top and bottom of the left and right racks 7 release their elastic force, and the stepped internal structure of the track pushes the bearing into the right part of the track. The right rack moves away from the ratchet 10, and the left rack engages with the ratchet at the same time. A vibration cycle ends and enters the next cycle.

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

Claims (7)

1. A transverse high-frequency vibration drill rod (1) suitable for soft foundation, characterized in that it comprises a power input system consisting of a pneumatic piston vibrator (3) whose upper end is fixed by a baffle (2) and a piston rod (4) connected to the piston inside the vibrator, a power conversion system consisting of a protective shell (5) connected to the lower end of the piston rod, a spring (6), a rack (7), a rack transverse motion control track (8), a control track fixing rod (9), a ratchet (10), a large gear (11) driven by the ratchet to rotate synchronously, a ratchet large gear fixing connecting rod (20), a bearing (21) moving along the control track, and a Y-shaped connecting rod (22) controlling the transverse motion of the rack, and a power output system consisting of a driven large gear (16), a driven small gear (17), a triangular cam (19), a driven gear and triangular cam fixing connecting rod (18), a linear roller eccentric block (12), a bearing block (15), and a linear roller eccentric block fixing device (13, 14). 2. According to claim 1, a transverse high-frequency vibration drill rod suitable for soft foundations is characterized in that the vibrator power input system is a pneumatic piston vibrator (3), a hydraulic piston vibrator or an electric piston vibrator. 3. According to claim 1, a transverse high-frequency vibration drill rod suitable for soft foundation is characterized in that the vibrator is limited in vertical displacement by upper and lower baffles (2), and is connected to the internal piston of the vibrator through a piston rod (4) to drive the piston rod (4) to perform vertical reciprocating linear motion, and the protective shell (5) is connected to the piston rod (4) to drive the rack (7) in the protective shell (5) to perform vertical reciprocating linear motion synchronously. 4. According to claim 1, a transverse high-frequency vibration drill rod suitable for soft foundation is characterized in that the top and bottom of the rack (7) are tightly fitted with the protective shell (5), and there is a group of springs (6) on the top and left and right sides of the bottom. The rack lateral movement control track (8) is connected to the rack (7) through a bearing (21) that moves along the control track and a Y-shaped connecting rod (22) that controls the lateral movement of the rack. At the same time, the track is connected to the inner wall of the drill rod (1) through a control track fixing rod (9), and the track has a right inclination angle of 2°. 5. According to claim 1, a transverse high-frequency vibration drill rod suitable for soft foundation, characterized in that the ratchet (10) and the large gear (11) driven by the ratchet to rotate synchronously are fixed together through a ratchet-large gear fixing connecting rod (20). 6. According to claim 1, a transverse high-frequency vibration drill rod suitable for soft foundation is characterized in that the driven large gear (16) is driven to rotate by the large gear (11) that rotates synchronously with the ratchet, and then the driven large gear (16) drives the driven small gear (17) and the triangular cam (19) to rotate synchronously, and the driven large gear (16), the driven small gear (17) and the triangular cam (19) are fixed together by a loose gear and a triangular cam fixing rod (18). 7. According to claim 1, a transverse high-frequency vibration drill rod suitable for soft foundation is characterized in that the linear roller eccentric block (12) performs transverse reciprocating linear motion under the squeezing effect of the bearing block (15) caused by the rotation of the triangular cam (19), the linear roller eccentric block (12) is fixed on a horizontal plane by a linear roller eccentric block fixing device (13, 14), and the bearing block (15) is connected to the linear roller eccentric block (12).