Vibration screwing device for screw anchor

Abstract

The invention relates to the technical field of engineering machinery, in particular to a spiral anchor vibration screwing device which comprises an anchor rod connected with a plurality of anchor discs, and the anchor discs are spiral anchor discs; the screwing assembly comprises a connecting screw and a driving mechanism; the vibration assembly is arranged on the anchor rod, and the vibration assembly is used for driving the anchor rod to generate rotational vibration around the axis of the anchor rod; the reinforcing assembly comprises a vibration energy storage mechanism, an air pressure reinforcing mechanism and an electromagnetic reinforcing mechanism; the contact area between the spiral anchor disc and the stratum is increased, the spiral anchor disc is matched with rotation vibration generated by the vibration assembly to effectively reduce the screwing resistance, and the device adapts to complex geological conditions; the vibration energy storage mechanism converts vibration energy into electric energy and compressed air, and energy recycling is achieved.

Description

Technical Field

[0001] This invention relates to the field of engineering machinery technology, specifically to a vibratory screw-tightening device for a spiral anchor. Background Technology

[0002] Helical anchor foundations are a widely used type of foundation in engineering structures. Due to their unique construction and superior load-bearing performance, they have received increasing attention and application in the engineering field in recent years. Helical anchor foundations were initially mainly used in the foundations of power line towers and communication towers. They work by rotating a helical anchor disc deep into the soil, generating enormous tensile and lateral load-bearing forces. With technological advancements, the application of helical anchors has gradually expanded to multiple fields such as construction, bridges, and marine engineering.

[0003] Existing spiral anchor devices often face multiple challenges during the tightening process: First, traditional tightening methods rely on a single mechanical torque, which can easily lead to excessive resistance, insufficient torque, or even anchor rod displacement in complex geological conditions (such as hard rock, cohesive soil, or loose strata), making it difficult to achieve efficient anchoring. Second, although vibration-assisted tightening can reduce resistance, the connection between the anchor rod and the vibration component is prone to loosening and failure under continuous vibration, affecting the transmission stability of the anchor rod and the drive mechanism. After long-term use, the connection may break or loosen, reducing the overall reliability of the device. Summary of the Invention

[0004] The purpose of this invention is to provide a vibratory screwing device for a spiral anchor to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A vibratory screw-tightening device for a helical anchor, comprising: An anchor bolt, wherein the anchor bolt is connected to several anchor discs; A screwing assembly, comprising a connecting screw and a drive mechanism, wherein the connecting screw is used to connect the drive mechanism and the anchor rod to each other, and the drive mechanism is used to drive the anchor rod to rotate; A vibration assembly is disposed on the anchor bolt, and the vibration assembly is used to drive the anchor bolt to generate rotational vibration about its axis; The reinforcement assembly includes a vibration energy storage mechanism, a pneumatic reinforcement mechanism, and an electromagnetic reinforcement mechanism. The vibration energy storage mechanism converts vibration energy into electrical energy and compressed air, which are then input into the electromagnetic reinforcement mechanism and the pneumatic reinforcement mechanism, respectively. The pneumatic reinforcement mechanism is used to reinforce the connecting screws, and the electromagnetic reinforcement device is used to electromagnetically reinforce the connection between the anchor rod and the vibration assembly.

[0006] Preferably, the bottom of the anchor rod has a conical structure, and the anchor plates are evenly spaced on the anchor rod.

[0007] Preferably, the driving mechanism includes a drive motor, which is used to drive the anchor bolt to rotate.

[0008] Preferably, the vibration assembly includes a device box, a fixed support, electrode blocks, an actuating bracket, and a response block. The fixed support is provided inside the device box, and four electrode blocks are arranged around the fixed support. The actuating bracket is connected to the anchor rod, and four response blocks are arranged around the actuating bracket. The current in the electrode blocks is adjusted to drive the response blocks to reciprocate.

[0009] Preferably, the actuation bracket is disposed through the bottom of the device box, and a connector is provided at the bottom of the actuation bracket. The anchor rod is provided with a connecting groove, a first insertion hole is provided through the connecting groove, and a second insertion hole is provided through the connector. By inserting the connector into the connecting groove, the first insertion hole and the second insertion hole will be aligned with each other. After the connecting screw is inserted into the first insertion hole and the second insertion hole in sequence and the connecting screw is fixed with a nut, the actuation bracket and the anchor rod are connected to each other.

[0010] Preferably, the connector has a reinforced cavity inside, which is connected to the second insertion hole. The vibration energy storage mechanism includes a clamping block, a clamping spring, a connecting rod, a piston block, a pressing block, a cylinder, a protective shell, an annular piezoelectric ceramic, and an energy storage battery. The clamping block is arranged around the second insertion hole and is slidably connected to the reinforced cavity. The clamping spring is used to drive the clamping block to clamp the connecting screw. The clamping block is connected to the connecting rod, and the connecting rod is connected to the piston block. The piston block is movably connected to the cylinder. The connecting rod passes through the cylinder. The end of the connecting rod away from the clamping block is connected to the pressing block. One end of the pressing block is movably inserted into the protective shell. An annular piezoelectric ceramic is provided inside the protective shell. When the connecting screw presses the clamping block, the corresponding pressing block will press the annular piezoelectric ceramic. The annular piezoelectric ceramic is electrically connected to the energy storage battery.

[0011] Preferably, the pneumatic reinforcement mechanism includes a pneumatic push rod and a compensating block. The pneumatic push rod is connected to the cylinder via an air pipe, and the compensating block is connected to the pneumatic push rod. The pneumatic push rod is equipped with an electromagnetic pressure relief valve, which is used to adjust the internal pressure of the pneumatic push rod.

[0012] Preferably, the electromagnetic reinforcement mechanism includes an electromagnet, which is disposed on the side wall of the connector and electrically connected to the energy storage battery.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: In this application, the spiral anchor plate increases the contact area with the stratum, and the rotational vibration generated by the vibration component effectively reduces the turning resistance, adapting to complex geological conditions; the vibration energy storage mechanism converts vibration energy into electrical energy and compressed air, realizing energy recovery and reuse, and provides energy to the electromagnetic reinforcement mechanism (providing adsorption force) and the pneumatic reinforcement mechanism (providing axial pressure), effectively improving energy utilization efficiency; the pneumatic reinforcement mechanism applies pre-tightening force to the connecting screws through compressed air to prevent vibration loosening and ensure transmission stability; the electromagnetic reinforcement mechanism enhances the fatigue resistance of the connection between the anchor rod and the vibration component through electromagnetic adsorption, avoiding connection failure caused by stress concentration, and improving the overall turning efficiency, fastening reliability and long-term durability of the device. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention. Figure 1 ; Figure 2 This is a three-dimensional structural diagram of the present invention. Figure 2 ; Figure 3 This is a schematic diagram of the connection structure between the anchor bolt and the anchor plate of the present invention; Figure 4 This is a schematic diagram of the anchor rod end structure of the present invention; Figure 5 This is a schematic diagram of the internal structure of the device box of the present invention (the device box is shown in cross-section). Figure 6 This is a schematic diagram of the internal structure of the response block of the present invention (the response block is shown in cross-section). Figure 7 This is a schematic diagram of the internal structure of the connector of the present invention (the connector is shown in perspective). Figure 8 This is a schematic diagram showing the position and structure of the protective shell and electromagnet of the present invention; Figure 9 This is a schematic diagram showing the location and structure of the protective shell and energy storage battery of the present invention; Figure 10 This is a schematic diagram showing the position and structure of the protective shell and the annular piezoelectric ceramic of the present invention (the protective shell is shown in cross-section). Figure 11 This is a schematic diagram of the connection structure of the cylinder, pneumatic push rod, and compensation block of the present invention; Figure 12 This is a schematic diagram showing the position and structure of the clamping spring, connecting rod, and piston block of the present invention.

[0015] In the diagram: 1 Anchor bolt, 2 Anchor plate, 3 Connecting screw, 4 Drive motor, 5 Equipment box, 6 Fixed support, 7 Electrode block, 8 Actuating bracket, 9 Response block, 10 Connector, 11 Clamping block, 12 Clamping spring, 13 Connecting rod, 14 Piston block, 15 Cylinder, 16 Pressing block, 17 Protective shell, 18 Ring piezoelectric ceramic, 19 Energy storage battery, 20 Pneumatic push rod, 21 Compensation block, 22 Electromagnetic pressure relief valve, 23 Electromagnet, 101 Connecting groove, 102 Socket one, 901 Permanent magnet, 902 Coil, 1001 Socket two. Detailed Implementation

[0016] 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.

[0017] Please see Figure 1-12 The present invention provides a technical solution: A vibratory screw-tightening device for a spiral anchor, as shown in the instruction manual. Figure 1 As shown, it includes: Anchor bolt 1, which is connected to several anchor discs 2, which are spiral anchor discs.

[0018] The screwing assembly includes a connecting screw 3 and a drive mechanism. The connecting screw 3 is used to connect the drive mechanism and the anchor rod 1 to each other, and the drive mechanism is used to drive the anchor rod 1 to rotate.

[0019] A vibration assembly is installed on the anchor bolt 1 and is used to drive the anchor bolt 1 to generate rotational vibration around its axis.

[0020] The reinforcement assembly includes a vibration energy storage mechanism, a pneumatic reinforcement mechanism, and an electromagnetic reinforcement mechanism. The vibration energy storage mechanism is used to convert vibration energy into electrical energy and compressed air and input them into the electromagnetic reinforcement mechanism and the pneumatic reinforcement mechanism, respectively. The pneumatic reinforcement mechanism is used to reinforce the connecting screw 3, and the electromagnetic reinforcement device is used to electromagnetically reinforce the connection between the anchor rod 1 and the vibration assembly.

[0021] The bottom of anchor rod 1 has a conical structure, which facilitates construction. Anchor plates 2 are evenly spaced on anchor rod 1.

[0022] The drive mechanism includes a drive motor 4, which is a quasi-static torque motor. The torque is applied in a unidirectional direction, which is the turning direction of the helical anchor. The drive motor 4 is used to drive the anchor rod 1 to rotate. During construction, as the turning depth increases and the anchor plate 2 enters the soil, the resistance torque of the soil on the anchor rod 1 and the anchor plate 2 gradually increases. The torque provided by the drive motor 4 is used to overcome the resistance torque of the soil on the helical anchor.

[0023] The vibration assembly includes a device box 5, a fixed support 6, electrode blocks 7, an actuation bracket 8, and response blocks 9. The device box 5 is used to install other components of the high-frequency vibration assembly. The fixed support 6 is set inside the device box 5, which is used to connect the device box 5 and the output shaft of the rotary motor. Four electrode blocks 7 are arranged around the fixed support 6. The actuation bracket 8 is connected to the anchor rod 1. Four response blocks 9 are arranged around the actuation bracket 8. The response block 9 includes a permanent magnet 901 and a coil 902. The current in the electrode block 7 is adjusted to drive the response block 9 to reciprocate. The amplitude and frequency of the reciprocating motion of the response block 9 are controlled by adjusting the magnitude and direction of the current in the electrode block 7. The reciprocating torque excitation received by the actuation bracket 8 is transmitted to the anchor rod 1 to which it is connected.

[0024] An actuation bracket 8 is installed through the bottom of the equipment box 5. A connector 10 is provided at the bottom of the actuation bracket 8. The connector 10 is used to cooperate with the connecting groove 101 to connect the anchor rod 1 and the equipment box 5. The anchor rod 1 is provided with the connecting groove 101. A first insertion hole 102 is provided through the connecting groove 101, and a second insertion hole 1001 is provided through the connector 10. The first insertion hole 102 and the second insertion hole 1001 are the same size. By inserting the connector 10 into the connecting groove 101, the first insertion hole 102 and the second insertion hole 1001 will be aligned to form a complete through hole. Then, by inserting the connecting screw 3 into the through hole formed by the first insertion hole 102 and the second insertion hole 1001 in sequence, and fixing the connecting screw 3 with a nut, the actuation bracket 8 and the anchor rod 1 are fixedly connected to each other.

[0025] The connector 10 has a reinforced cavity inside, which is used to install the vibration energy storage mechanism. The reinforced cavity and the second insertion hole 1001 are interconnected. The vibration energy storage mechanism includes a clamping block 11, a clamping spring 12, a connecting rod 13, a piston block 14, a cylinder 15, a pressing block 16, a protective shell 17, an annular piezoelectric ceramic 18, and an energy storage battery 19. The clamping block 11 is arranged around the second insertion hole 1001. The clamping spring 12 is used to drive the clamping block 11 to clamp the connecting screw 3. In this embodiment, three clamping blocks 11 are provided, and the clamping blocks 11 are slidably connected to the reinforced cavity. When in use, the clamping blocks 11 slide along the radial direction of the first insertion hole 102 (and the second insertion hole 1001). The clamping block 11 is connected to the connecting rod 13, which is used to install the clamping block 11, the piston block 14, and the pressing block 16. The connecting rod 13 is also connected to the piston block 14, which is used to connect with the cylinder. The cylinder 15 works in conjunction with the pneumatic push rod 20 to continuously compress air. The piston block 14 is slidably connected to the cylinder 15. The connecting rod 13 passes through the cylinder 15. A sealing ring is provided at the connection between the cylinder 15 and the connecting rod 13 to achieve dynamic sealing. The end of the connecting rod 13 away from the clamping block 11 is connected to a pressing block 16. One end of the pressing block 16 is movably inserted into the protective shell 17. The protective shell 17 is used to protect the annular piezoelectric ceramic 18. The annular piezoelectric ceramic 18 is provided inside the protective shell 17. When the connecting screw 3 presses the clamping block 11, the pressing block 16 corresponding to the clamping block 11 will press the annular piezoelectric ceramic 18. The annular piezoelectric ceramic 18 generates an electric charge and stores it in the energy storage battery 19. The annular piezoelectric ceramic 18 is electrically connected to the energy storage battery 19. An electromagnetic relay is provided inside the energy storage battery 19 to control the circuit opening and closing of the electromagnet 23.

[0026] The pneumatic reinforcement mechanism includes a pneumatic push rod 20 and a compensation block 21. The pneumatic push rod 20 is connected to the air tank through an air pipe. One end of the pneumatic push rod 20 is fixedly connected to the side wall of the reinforcement cavity. The compensation block 21 is connected to the other end of the pneumatic push rod 20. The compensation block 21 is used to clamp the connecting screw 3, thereby ensuring the stability of vibration transmission. The pneumatic push rod 20 is equipped with an electromagnetic pressure relief valve 22, which is used to adjust the internal pressure of the pneumatic push rod 20.

[0027] The electromagnetic reinforcement mechanism includes an electromagnet 23, which is disposed on the side wall of the connector 10 and electrically connected to the energy storage battery 19. By energizing the electromagnet 23, the anchor rod 1 is attracted, thereby ensuring the stability of vibration transmission.

[0028] Working principle: When in use, the drive motor 4 drives the anchor rod 1 to rotate. During the rotation, the current inside the electrode block 7 is changed to drive the response block 9 to move. When the response block 9 moves, it will drive the actuator bracket 8 to move, thereby driving the anchor rod 1 to vibrate at high frequency. When vibration causes wear, resulting in loosening of the connection between connector 10 and anchor rod 1, relative movement occurs between connector 10 and anchor rod 1, causing connecting screw 3 to move. When connecting screw 3 moves, clamping block 11 moves radially along insertion hole 1001. When clamping block 11 moves, connecting rod 13 drives piston block 14 to move along cylinder 15, compressing air into pneumatic push rod 20. When pneumatic push rod 20 extends, it drives compensation block 21 to clamp connecting screw 3 and simultaneously drives pressing block 16 to strike annular piezoelectric ceramic 18. The electrical energy generated by annular piezoelectric ceramic 18 is input into energy storage battery 19. When the voltage in energy storage battery 19 reaches the set value, energy storage battery 19 energizes electromagnet 23, thereby further ensuring the stability of vibration transmission through electromagnetic adsorption.

[0029] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A vibratory screw-tightening device for a helical anchor, characterized in that, include: An anchor bolt, wherein the anchor bolt is connected to several anchor discs; A screwing assembly, comprising a connecting screw and a drive mechanism, wherein the connecting screw is used to connect the drive mechanism and the anchor rod to each other, and the drive mechanism is used to drive the anchor rod to rotate; A vibration assembly is disposed on the anchor bolt, and the vibration assembly is used to drive the anchor bolt to generate rotational vibration about its axis; The reinforcement assembly includes a vibration energy storage mechanism, a pneumatic reinforcement mechanism, and an electromagnetic reinforcement mechanism. The vibration energy storage mechanism converts vibration energy into electrical energy and compressed air, which are then input into the electromagnetic reinforcement mechanism and the pneumatic reinforcement mechanism, respectively. The pneumatic reinforcement mechanism is used to reinforce the connecting screws, and the electromagnetic reinforcement device is used to electromagnetically reinforce the connection between the anchor rod and the vibration assembly.

2. The vibratory screw-tightening device for a spiral anchor according to claim 1, characterized in that: The bottom of the anchor rod has a conical structure, and the anchor plates are evenly spaced on the anchor rod.

3. The vibratory screw-tightening device for a spiral anchor according to claim 1, characterized in that: The driving mechanism includes a drive motor, which is used to drive the anchor bolt to rotate.

4. The vibratory screwing device for a spiral anchor according to claim 3, characterized in that: The vibration assembly includes a device box, a fixed support, electrode blocks, an actuating bracket, and response blocks. The device box contains a fixed support, and four electrode blocks are arranged around the fixed support. The actuating bracket is coaxially connected to the anchor rod, and four response blocks are arranged around the actuating bracket. The current in the electrode blocks is adjusted to drive the response blocks to reciprocate.

5. The spiral anchor vibration tightening device according to claim 4, characterized in that: The actuation bracket is installed through the bottom of the device box. A connector is provided at the bottom of the actuation bracket. The anchor rod is provided with a connecting groove. A first insertion hole is provided through the connecting groove, and a second insertion hole is provided through the connector. By inserting the connector into the connecting groove, the first insertion hole and the second insertion hole will be aligned with each other. After the connecting screw is inserted into the first insertion hole and the second insertion hole in sequence and the connecting screw is fixed with a nut, the actuation bracket and the anchor rod are connected to each other.

6. The vibratory screwing device for a spiral anchor according to claim 5, characterized in that: The connector has a reinforced cavity inside, which is connected to the second insertion hole. The vibration energy storage mechanism includes a clamping block, a clamping spring, a connecting rod, a piston block, a cylinder, a pressing block, a protective shell, an annular piezoelectric ceramic, and an energy storage battery. The clamping block is arranged around the second insertion hole and is slidably connected to the reinforced cavity. The clamping spring is used to drive the clamping block to clamp the connecting screw. The clamping block is connected to the connecting rod, and the connecting rod is connected to the piston block. The piston block is movably connected to the cylinder, and the connecting rod passes through the cylinder. The end of the connecting rod away from the clamping block is connected to the pressing block, and one end of the pressing block is movably inserted into the protective shell. An annular piezoelectric ceramic is provided inside the protective shell. When the connecting screw presses the clamping block, the corresponding pressing block will press the annular piezoelectric ceramic. The annular piezoelectric ceramic is electrically connected to the energy storage battery.

7. The vibratory screw-tightening device for a spiral anchor according to claim 6, characterized in that: The pneumatic reinforcement mechanism includes a pneumatic push rod and a compensating block. The pneumatic push rod is connected to the cylinder via an air pipe, and the compensating block is connected to the pneumatic push rod. The pneumatic push rod is equipped with an electromagnetic pressure relief valve, which is used to adjust the internal pressure of the pneumatic push rod.

8. A vibratory screw-tightening device for a spiral anchor according to claim 6, characterized in that: The electromagnetic reinforcement mechanism includes an electromagnet, which is disposed on the side wall of the connector and electrically connected to the energy storage battery.

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