A pile driver for power tower construction

Abstract

The application discloses a pile driver for electric power tower construction, which is characterized by the following: a limiting sliding groove is arranged in the interior of a drill rod support, a limiting sliding box and a limiting sliding block are slidably connected to the limiting sliding groove, a group of first motors are arranged in the limiting sliding box, a group of gears are arranged in the limiting sliding block, the first motors drive the gears to rotate, the gears are limited to move up and down along the limiting rack under the limiting of the limiting rack, and the up and down movement of the drill rod is driven to drill a hole, so that the safety is improved, and the limiting of the limiting sliding groove guarantees the stability of the whole; a transmission sleeve and a mounting sleeve are fixedly connected to the bottom of a motor fixing box, a transmission shaft drives the rotation of the transmission sleeve, the drill rod is connected to the transmission sleeve through the mounting sleeve, so that the drill rod is not subjected to great loss during the drilling process, the service life is prolonged, and the safety is guaranteed.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of pile drivers, in particular to a pile driver for power tower construction. BACKGROUND

[0002] The power tower is a tower-shaped building in the shape of a ladder or a triangle, and has a height of usually 25-40 meters, is a steel frame structure, and is usually built near power plants and power distribution stations in the wild, and is an important facility of the power department and can support and protect overhead power lines. Because the power tower is high and is installed outdoors, the installation and construction thereof are required to be high, and a pile driver is usually used to drill a hole to ensure the installation depth, and a spiral pile driver is one of the commonly used pile drivers, which is composed of a pile frame and a drilling part, and is a pile driving device for drilling a hole into the ground by driving a drill rod and a drill bit by a power head, but the existing spiral pile driver still has some problems in actual use.

[0003] Firstly, the drill rod of the existing spiral pile driver is vertically installed along the drill rod frame, the drill rod and the winch are connected through the steel wire, the motor is turned on during use, the drill rod is rotated by the motor, the steel wire is controlled to be unfolded by the winch, the drill rod assembly slides down along the slide rail, and the drill rod is lifted by controlling the winch to pull the steel wire after the drilling is completed, the drill rod needs to be pulled by the steel wire in the above process, the steel wire needs to bear a large pulling force and needs to be continuously bent, and the steel wire is easy to break when the stress is too large, the drill rod is easy to fall and injure the workers, the pulling of the steel wire cannot provide a large driving force when the drill rod moves downward, and the pulling rope cannot stably control the drill rod to drill downward.

[0004] Secondly, when drilling, the drill rod is driven to drill into the soil in a spiral manner, and then the soil is brought out by lifting upward and through the spiral blade, the geology of the land cannot be completely detected or needs to be detected for a long time, so that the geology cannot be accurately determined, and therefore hard geological layers may be encountered when drilling, the drill rod is easy to be severely worn or even directly damaged if the speed of the drill rod is not controlled, and therefore a certain safety hazard exists. SUMMARY

[0005] The application provides a pile driver for power tower construction, which has the advantages of high drilling stability and high safety factor, and solves the problems in the background art.

[0006] To achieve the above object, the following technical scheme is adopted in the application: The piling machine for power tower construction comprises a machine body, a caterpillar wheel movably arranged at the bottom of the machine body, a supporting leg movably arranged at the bottom of the front end of the machine body, a drill rod support movably hinged at the front face of the machine body, a limiting sliding groove arranged in the middle of the drill rod support, a limiting sliding box slidably sleeved in the limiting sliding groove, limiting sliding blocks fixedly connected to the two sides of the limiting sliding box and movably sleeved in the limiting sliding groove, a motor fixing box slidably arranged at the front face of the drill rod support and fixedly connected to the front face of the limiting sliding box, a drill rod movably arranged at the bottom of the motor fixing box, and a protecting cylinder fixedly arranged at the front face bottom of the drill rod support and sleeved at the outer ring of the drill rod.

[0007] Further, two first motors are evenly transversely arranged in the limiting sliding box, a transmission groove coaxial with the first motor is arranged in the middle of the limiting sliding block, a gear wheel is movably arranged in the transmission groove, the output shaft of the first motor is fixedly connected to the middle of the gear wheel, and a limiting rack is fixedly arranged in the middle of the inner wall on the two sides of the limiting sliding groove and engaged with the gear wheel.

[0008] Further, the limiting sliding box and the limiting sliding block are up and down limitedly slid in the limiting sliding groove, and the first motor can be self-locked when driving the motor fixing box to move up and down.

[0009] Further, a second motor is fixedly arranged in the motor fixing box, a transmission sleeve is movably arranged at the middle of the bottom surface of the motor fixing box, an installation sleeve is fixedly connected to the top of the drill rod, and the installation sleeve and the transmission sleeve are fixedly connected through bolts.

[0010] Further, a rotating cavity is arranged in the middle of the transmission sleeve, a transmission shaft is fixedly connected to the output end of the second motor and extends into the rotating cavity, air pressure grooves are symmetrically arranged in the inner wall of the rotating cavity, a pressing block is fixedly arranged at the outer ring of one end of the transmission shaft in the rotating cavity, and the end of the pressing block is movably sleeved into the air pressure groove.

[0011] Further, a variable resistance strip is fixedly arranged in the inner wall of the air pressure groove, a sliding sheet is fixedly arranged at the end of one end of the pressing block extending into the air pressure groove, and a sensor is fixedly arranged in the inner wall of the most inner end of the air pressure groove.

[0012] Further, the pressing block is in the shape of an L-shaped arc, the pressing block and the air pressure groove are arranged in sliding sealing mode, and the pressing block and the air pressure groove are filled with inert gas with a certain air pressure.

[0013] Further, the linear connection is adopted between the slide and the sensor, the power supply is arranged in the transmission sleeve, the slide and the variable resistance strip are connected to the power supply circuit, and the resistance gradually increases when the slide slides along the variable resistance strip to the inside of the air pressure groove.

[0014] The power tower construction pile driver provided by the application has the following advantages: a limiting sliding groove is arranged in the inside of the drill rod support, a limiting sliding box and a limiting sliding block are sleeved with the limiting sliding groove, a group of first motors are arranged in the inside of the limiting sliding box, a group of gears are arranged in the inside of the limiting sliding block, the gears are driven to rotate by the first motors, and the gears roll up and down along the limiting rack under the limitation of the limiting rack, the motor fixing box is driven to move up and down by the limiting sliding box and the limiting sliding block, the drill rod is driven to move up and down to drill a hole, the up-and-down movement of the drill rod is controlled by the cooperation of the gears and the limiting rack, the safety is improved, the direct control of the first motors is fed back to the drill rod, and the stability of the whole is ensured by the limitation of the limiting sliding groove.

[0015] The transmission sleeve is fixedly connected with the mounting sleeve, and the transmission shaft drives the rotation of the transmission sleeve, compared with the prior art, the drill rod is connected with the transmission sleeve by the mounting sleeve, and the transmission sleeve is driven by the transmission shaft, when the second motor is started, the transmission shaft drives the compression block to compress the air pressure in the air pressure groove, so as to drive the transmission sleeve to rotate, and the variable resistance strip is arranged in the air pressure groove, and the slide on the compression block is adjusted and controlled, then the sensor feeds back to the system to control the rotating speed of the second motor and the first motor, so as to ensure that the drill rod is not subjected to great loss in the drilling process, improve the service life, and ensure the safety. BRIEF DESCRIPTION OF DRAWINGS

[0016] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the present disclosure and serve to explain the principles of the present disclosure.

[0017] Referring to the drawings, the present disclosure can be more clearly understood and appreciated from the following detailed description, in conjunction with the accompanying drawings, in which:

[0018] Figure 1 It is a whole structure schematic view of the application;

[0019] Figure 2 It is a whole structure top view of the application;

[0020] Figure 3 It is a whole structure side view of the application;

[0021] Figure 4 It is Figure 2 It is an A-A sectional view of the application;

[0022] Figure 5 It isFigure 2 Cross-sectional view of the middle section (BB);

[0023] Figure 6 for Figure 3 CC section view;

[0024] Figure 7 for Figure 3 Cross-sectional view of DD in the middle;

[0025] Figure 8 for Figure 7 Enlarged view at point E in the middle;

[0026] Figure 9 This is a resistance variation control diagram for the present invention.

[0027] In the diagram: 1. Body; 2. Track wheel; 3. Support leg; 4. Drill rod bracket; 401. Limiting groove; 5. Limiting slide box; 6. Limiting slider; 601. Transmission groove; 7. Motor mounting box; 8. Drill rod; 9. Casing; 10. First motor; 11. Gear; 12. Limiting rack; 13. Second motor; 14. Mounting sleeve; 15. Transmission sleeve; 1501. Rotating cavity; 1502. Air pressure groove; 16. Drive shaft; 17. Bolt; 18. Pressure block; 19. Variable resistance bar; 20. Sliding plate; 21. Sensor. Detailed Implementation

[0028] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0029] Example 1

[0030] Please see Figures 1-7The utility model provides a pile driver for power tower construction, including the body 1, the bottom movable installation of body 1 is caterpillar wheel 2, the bottom movable installation of body 1 front end is support leg 3, the front movable hing of body 1 is drill rod support 4, and the middle part of drill rod support 4 is equipped with limiting sliding slot 401, and the middle part sliding sleeve of limiting sliding slot 401 is equipped with limiting sliding box 5, and the both sides fixed connection of limiting sliding box 5 is equipped with limiting sliding block 6, and limiting sliding block 6 movable sleeve is in limiting sliding slot 401, and limiting sliding box 5 and limiting sliding block 6 all limiting sliding sleeve are in limiting sliding slot 401, so guarantee that subsequent motor fixed box 7 will only realize the movement of up and down direction, avoid shaking to all around, more safe, and the front sliding installation of drill rod support 4 is motor fixed box 7, and motor fixed box 7 with the front fixed connection of limiting sliding box 5, and the bottom movable installation of motor fixed box 7 is drill rod 8, and the front bottom fixed installation of drill rod support 4 is casing 9, and casing 9 sleeve is at the outer ring of drill rod 8, and casing 9 is positioned protection to drill rod 8, avoids the deviation when drilling and causes dangerous accident, and the inside even transverse of limiting sliding box 5 is equipped with two first motor 10, and the middle part of limiting sliding block 6 is equipped with with the transmission groove 601 of first motor 10 same axis, and the inside movable installation of transmission groove 601 is gear 11, and the output shaft of first motor 10 with the middle fixed connection of gear 11, and the middle part fixed installation of limiting sliding slot 401 in the inner wall of limiting sliding block 6 both sides is limiting rack 12, and limiting rack 12 with gear 11 engages transmission, and the both sides gear 11 is rotated through two first motor 10 drive respectively, then again transmission is on limiting rack 12, because limiting rack 12 is fixedly installed on drill rod support 4, thus under the action of reaction force will make gear 11 along limiting rack 12 upwards or downwards roll, namely drive limiting sliding box 5 and move up and move down process, so can drive motor fixed box 7 moves up and down, to drive drill rod 8 and complete the process of drilling and taking out soil, the whole process is controlled through two first motor 10, and keeps synchronous action, and control is more convenient and stable, and limiting sliding box 5 and limiting sliding block 6 are in limiting sliding slot 401 inside up and down limiting sliding, and the first motor 10 drive motor fixed box 7 moves up and down can be self-locking, so when moving motor fixed box 7 moves up and down only need to control the positive and negative rotation of first motor 10 can be realized, simultaneously, first motor 10 not only can be used to drive motor fixed box 7 drive drill rod 8 moves up and down, but also can judge safety according to the acceleration when motor fixed box 7 moves down, when the acceleration of motor fixed box 7 moves down is too big will directly drive first motor 10 self-locking, to limit the rotation of gear 11, and then cooperate limiting rack 12 can limit sliding box 5 limit brake, to also realize brake effect to motor fixed box 7 and drill rod 8, effectively avoid the dangerous accident caused by steel wire rope breaking in prior art, and the safety is higher and control is more convenient as a whole.

[0031] Example two

[0032] See Figure 1 , Figure 4 , Figures 7-9The second motor 13 is fixedly installed in the interior of the motor fixing box 7, the transmission sleeve 15 is movably installed in the middle of the bottom surface of the motor fixing box 7, the mounting sleeve 14 is fixedly connected to the top of the drill rod 8, the mounting sleeve 14 and the transmission sleeve 15 are fixedly connected through the bolts 17, and the motor fixing box 7 and the drill rod 8 are not directly connected. The transmission sleeve 15 arranged at the bottom of the motor fixing box 7 is convenient for the installation and replacement of drill rods 8 of different sizes, and the rotation of the transmission shaft 16 is needed to drive the internal resistance adjustment, so as to be transmitted to the control system to judge the strength condition during drilling, so as to play a protection and monitoring role. The middle part of the transmission sleeve 15 is provided with a rotating cavity 1501, the output end of the second motor 13 is fixedly connected with the transmission shaft 16, and the transmission shaft 16 extends into the rotating cavity 1501. The transmission sleeve 15 is symmetrically provided with a gas pressure groove 1502 at the side wall in the interior of the rotating cavity 1501. The outer circle of one end of the transmission shaft 16 in the interior of the rotating cavity 1501 is fixedly installed with the pressing block 18, the end of the pressing block 18 is movably sleeved into the interior of the gas pressure groove 1502, the interior side wall of the gas pressure groove 1502 is fixedly installed with the variable resistance strip 19, the end of one end of the pressing block 18 extending into the interior of the gas pressure groove 1502 is fixedly installed with the sliding sheet 20, and the inner wall of the innermost end of the gas pressure groove 1502 is fixedly installed with the sensor 21. The variable resistance strip 19 and the sliding sheet 20 constitute a sliding rheostat to control the resistance change of the circuit, and the change signal is transmitted to the control system through the sensor 21, so as to perform feedback adjustment. The pressing block 18 is in L-shaped arc shape, and the pressing block 18 and the gas pressure groove 1502 are arranged in sliding sealing mode. The pressing block 18 and the gas pressure groove 1502 are filled with inert gas with a certain gas pressure. The pressing block 18 has a rotatable angle range in the rotating cavity 1501, so that the pressing block 18 can further compress the gas in the gas pressure groove 1502. The synchronous rotation of the transmission shaft 16 and the transmission sleeve 15 needs the pressing block 18 to extrude the gas in the gas pressure groove 1502, so the sealing property needs to be ensured and the gas needs to be prevented from being too active. The sliding sheet 20 and the sensor 21 are arranged in linear connection. The transmission sleeve 15 is provided with a power supply, and the sliding sheet 20 and the variable resistance strip 19 are connected to the power supply circuit. When the sliding sheet 20 slides along the variable resistance strip 19 into the interior of the gas pressure groove 1502, the resistance gradually increases. The circuit is arranged in the transmission sleeve 15, so that when the pressing block 18 further compresses the gas in the gas pressure groove 1502, the sliding sheet 20 slides on the variable resistance strip 19, so as to adjust the resistance connected to the circuit, and a sliding rheostat is constituted. The change signal is transmitted to the control system through the sensor 21, the speed of the second motor 13 is controlled through feedback, and the speed control of the drill rod 8 during drilling is assisted, so that the drill rod 8 always works in a safe range, wear and tear or cracking of the drill rod 8 are avoided, and the speed of the first motor 10 is controlled to control the up-down movement speed of the motor fixing box 7, so as to further ensure the safety of work.

[0033] Working principle: first, the pile driver to the position where the need to pile, and then extend the support leg 3 support to the surface, in the drive drill pipe bracket 4 vertical, according to the pre exploration geological conditions to adjust the power and start the first motor 10, the output shaft of the first motor 10 drive gear 11 in the transmission groove 601 rotation, gear 11 rotation while its outer circle with the limit slide groove 401 side wall on the limit rack 12 meshing transmission, because the limit rack 12 fixed and limit slide box 5 and limit slide block 6 sliding sleeve in the limit slide groove 401, and then will drive limit slide box 5 and limit slide block 6 overall downward sliding, in limit slide box 5 downward sliding at the same time will drive the front motor fixed box 7 also synchronous downward movement;

[0034] At the same time, the second motor 13 in the motor fixed box 7 is also started, and drives the pressure block 18 through the transmission shaft 16, the pressure block 18 rotates, and the transmission sleeve 15 is also rotated synchronously through the gas pressure in the compression gas pressure groove 1502, the transmission sleeve 15 rotates to drive the installation sleeve 14 installed outside to rotate, further driving the drill pipe 8 to rotate, with the limit slide box 5 driving the downward movement of the motor fixed box 7, the drill pipe 8 rotates while drilling into the ground;

[0035] With the increase of the drilling depth of the drill pipe 8 into the ground, the volume of the gas in the compression gas pressure groove 1502 is increased, and the gas pressure is also increased, so that the gas pressure is large enough to drive the transmission sleeve 15 to rotate synchronously, when the pressure block 18 slides into the gas pressure groove 1502, the slide piece 20 slides along the variable resistance strip 19, and the resistance increases, then the sensor 21 feeds back to the control system, the control system controls the second motor 13 to reduce the speed, so as to reduce the speed of the drill pipe 8, so as to reduce the loss of the drill pipe 8 when drilling downward, when the slide piece 20 slides to R0 resistance, at this time, the dangerous alarm condition is reached, the drilling is stopped and the first motor 10 is controlled to reverse rotation, so as to drive the motor fixed box 7 to move upward, at this time, because the second motor 13 also stops rotating, the drill pipe 8 will bring out the soil and form a drill hole, after shaking off the soil on the drill pipe 8, the drilling step is carried out again, until the requirement is reached.

Claims

1. A pile driver for power tower construction, characterized in that, The machine includes a body (1), a track wheel (2) is movably installed at the bottom of the body (1), a support leg (3) is movably installed at the bottom of the front end of the body (1), a drill rod bracket (4) is movably hinged to the front of the body (1), a limiting groove (401) is opened in the middle of the drill rod bracket (4), a limiting slide box (5) is slidably sleeved in the middle of the limiting groove (401), a limiting slider (6) is fixedly connected to both sides of the limiting slide box (5), and the limiting slider (6) is movably sleeved in the limiting groove (401), a motor fixing box (7) is slidably installed on the front of the drill rod bracket (4), and the motor fixing box (7) is fixedly connected to the front of the limiting slide box (5), a drill rod (8) is movably installed at the bottom of the motor fixing box (7), and a protective sleeve (9) is fixedly installed at the bottom of the front of the drill rod bracket (4), and the protective sleeve (9) is sleeved on the outer ring of the drill rod (8); The second motor (13) is fixedly installed inside the motor fixing box (7). A transmission sleeve (15) is movably installed in the middle of the bottom surface of the motor fixing box (7). An installation sleeve (14) is fixedly connected to the top of the drill rod (8). The installation sleeve (14) and the transmission sleeve (15) are fixedly connected by bolts (17). The transmission sleeve (15) has a rotating cavity (1501) in the middle. The output end of the second motor (13) is fixedly connected to a transmission shaft (16), and the transmission shaft (16) extends into the rotating cavity (1501). The transmission sleeve (15) has symmetrically opened air pressure grooves (1502) on the side wall of the rotating cavity (1501). The outer ring of the transmission shaft (16) located inside the rotating cavity (1501) is fixedly installed with a pressure block (18). The end of the pressure block (18) is movably sleeved into the air pressure groove (1502). A variable resistance strip (19) is fixedly installed on the inner side wall of the air pressure groove (1502), a sliding plate (20) is fixedly installed at the end of the pressure block (18) that extends into the air pressure groove (1502), and a sensor (21) is fixedly installed on the innermost inner wall of the air pressure groove (1502). The pressure block (18) is L-shaped and the pressure block (18) and the air pressure groove (1502) are connected by a sliding seal. The pressure block (18) and the air pressure groove (1502) are filled with an inert gas at a certain pressure.

2. The piling machine for power tower construction according to claim 1, characterized in that, The limiting slide box (5) has two first motors (10) evenly and horizontally placed inside. The limiting slider (6) has a transmission groove (601) coaxial with the first motor (10) in the middle. A gear (11) is movably installed inside the transmission groove (601). The output shaft of the first motor (10) is fixedly connected to the middle of the gear (11). The limiting slide groove (401) has a limiting rack (12) fixedly installed in the middle of the inner wall on both sides of the limiting slider (6), and the limiting rack (12) meshes with the gear (11) for transmission.

3. A pile driver for power tower construction according to claim 2, characterized in that, The limiting slide box (5) and the limiting slider (6) both slide vertically within the limiting slide groove (401), and the first motor (10) can self-lock as the driving motor fixing box (7) moves up and down.

4. A pile driver for power tower construction according to claim 1, characterized in that, The slider (20) and the sensor (21) are linearly connected. The transmission sleeve (15) is equipped with a power supply, and the slider (20) and the variable resistance bar (19) are connected to the power supply circuit. When the slider (20) slides along the variable resistance bar (19) into the air pressure groove (1502), the resistance gradually increases.

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