A rusted bolt dismounting tool with hydraulic force increasing and high frequency impact

Abstract

The utility model discloses a kind of rusted bolt dismounting tools with hydraulic force increasing and high-frequency impact, it is related to maintenance tool technical field.It includes: ontology;Clamping mechanism is three-jaw chuck, is set in the front end of ontology and is rotatably connected with ontology, the claw of three-jaw chuck is protruding relative to three-jaw chuck;Hydraulic system, including hydraulic cylinder, pressure gauge and pressure relief valve, hydraulic cylinder is arranged in ontology inside along the axial direction of ontology, hydraulic cylinder is double piston rod hydraulic cylinder, and is connected with hydraulic pump;One end of the piston rod of hydraulic cylinder is hinged to the outside of three-jaw chuck, the other end of piston rod corresponds to impact module;Impact module, including electromagnetic oscillator and impact block, impact block is fixed to the other end of piston rod, electromagnetic oscillator is fixed on ontology, and is electromagnetically coupled with impact block.The utility model solves the drawbacks that traditional method needs to use destructive disassembly, with the characteristics of simple operation, dismounting effect is good, application range is wide etc.

Description

Technical Field

[0001] This utility model belongs to the field of maintenance tool technology, and specifically relates to a tool for removing rusted bolts that has hydraulic force amplification and high-frequency impact. Background Technology

[0002] Bolts are widely used in mechanical equipment, vehicles, pipelines and steel structures. When they are in long-term service or exposed to humid and corrosive environments, the threaded parts are prone to corrosion and seizing, making disassembly difficult. Existing treatment methods for rusted bolts mainly include manual wrenches, impact wrenches, flame heating and chemical rust removers, but all of them have different limitations, specifically: (1) Manual wrenches: rely entirely on manpower, are prone to slipping and damaging edges when severely rusted; applying force can easily cause the tool or workpiece to break, posing a safety risk. (2) Impact wrenches: require a large operating / swinging space; vibration can easily be transmitted to precision parts, causing secondary damage, and are noisy. (3) Flame heating: open flame operations pose a fire and explosion hazard, and are restricted by fire bans or confined spaces; high temperatures may damage seals, coatings and material properties. (4) Chemical rust removers: act slowly and have limited effect on severe rust, making it difficult to meet the needs of rapid maintenance.

[0003] Furthermore, existing technologies struggle to simultaneously achieve effective disturbance of rust bonding forces and continuous, stable high torque application to nuts / bolts within a confined space. On one hand, tools relying solely on impact are prone to excessive vibration and noise, and are unfriendly to precision components. On the other hand, tools relying solely on continuous torque are inefficient in quickly breaking down the microscopic bonds and adhesion bridges of the rust layer. Therefore, existing technologies suffer from comprehensive deficiencies in terms of safety, efficiency, environmental adaptability, and friendliness to precision components, necessitating a disassembly solution that can achieve both low-risk rust breaking and continuous torque output within a confined space. Utility Model Content

[0004] The purpose of this invention is to overcome the above-mentioned defects and propose a tool for disassembling rusted bolts that combines hydraulic force amplification and high-frequency impact. By using mechanical vibration to break the bonding force of the rust layer and simultaneously outputting continuous torque, the tool can safely disassemble rusted bolts.

[0005] The specific technical solution is as follows: A tool for removing rusted bolts, featuring hydraulic force amplification and high-frequency impact, comprising: ontology; The clamping mechanism is a three-jaw chuck, which is sleeved on the front end of the body and rotatably connected to the body. The jaws of the three-jaw chuck protrude relative to the three-jaw chuck and are used to clamp the bolt. The hydraulic system includes a hydraulic cylinder, a pressure gauge, and a pressure relief valve. The hydraulic cylinder is arranged axially inside the body and is a double-piston rod hydraulic cylinder connected to an external hydraulic pump. One end of the piston rod of the hydraulic cylinder is hinged to the outside of the three-jaw chuck to drive the three-jaw chuck to rotate, and the other end of the piston rod corresponds to the impact module. The impact module includes an electromagnetic oscillator and an impact top block. The impact top block is fixed to the other end of the piston rod, and the electromagnetic oscillator is fixed to the body and electromagnetically coupled to the impact top block. It is used to apply a unidirectional electromagnetic impact to the impact top block, so that the piston rod generates a high-frequency impact in the direction of the clamping mechanism.

[0006] Preferably, the three-jaw chuck has a ratchet ring on its outer periphery, and the body has a pawl that cooperates with the ratchet ring to form a one-way locking mechanism to restrict the three-jaw chuck from rotating unidirectionally along the high-frequency impact direction.

[0007] Preferably, the clamping mechanism is eccentrically positioned at one end of the body, such that the axis of the piston rod is tangent to the center of the three-jaw chuck.

[0008] Preferably, the hydraulic pump connected to the external hydraulic system is a manual hydraulic pump.

[0009] Preferably, the body includes a fixing section and a gripping section, the fixing section is provided with the clamping mechanism, and the gripping section has a rectangular cross-section.

[0010] Preferably, the pressure gauge is disposed on the end face of the grip section and is flush with the end face, and a pressure relief valve switch is provided on one side of the grip section for controlling the pressure relief valve.

[0011] Preferably, the outer side of the grip section is provided with a shock-absorbing layer.

[0012] Preferably, the clamping mechanism has an embedded temperature sensor, which is connected to the power control circuit of the electromagnetic oscillator and is used to control the operation of the electromagnetic oscillator according to the temperature.

[0013] Compared with existing technologies, the beneficial effects of this utility model are as follows: 1. This invention effectively solves the problem of difficult disassembly of rusted bolts caused by rust adhesion through the synergistic effect of hydraulic force amplification and high-frequency impact. Specifically, this invention provides a stable and powerful rotational torque through a hydraulic system, while simultaneously utilizing the high-frequency impact force generated by the impact module to act on the bolt, thereby overcoming static friction and achieving bolt loosening and disassembly. This combination not only improves disassembly efficiency but also reduces the physical exertion of the operator, making it particularly suitable for severely rusted working conditions.

[0014] 2. The purpose of this utility model is to provide a highly efficient, labor-saving, and reliable tool for removing rusted bolts, addressing the shortcomings of traditional tools that are prone to slippage, insufficient torque, or poor impact when removing rusted bolts. Its technical principle is based on the integration of hydraulic drive and electromagnetic impact: the piston rod of the hydraulic cylinder drives the three-jaw chuck to rotate, causing the jaws to clamp the bolt and apply continuous torque; simultaneously, the electromagnetic oscillator applies a unidirectional high-frequency impact to the piston rod through the impact block. This impact force is transmitted axially to the bolt, destroying the rust layer, thus achieving smooth disassembly through the combined action of rotation and impact. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a front structural view of the present invention; Figure 3 This is a schematic diagram of a hydraulic system.

[0016] In the attached diagram, 1-body, 2-fixed section, 3-grip section, 4-three-jaw chuck, 41-jaw, 5-hydraulic, 6-piston rod, 7-pressure gauge, 8-pressure relief valve, 9-electromagnetic oscillator, 10-impact top block, 11-magnetic shielding block, 12-manual hydraulic pump, 13-shock-absorbing layer. Detailed Implementation

[0017] The embodiments of the utility model are further described in detail below with reference to the accompanying drawings, so that the purpose, technical solution and technical effect of the utility model can be more clearly presented.

[0018] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0019] like Figures 1-3 As shown, this utility model discloses a rust bolt removal tool with hydraulic force amplification and high-frequency impact, which consists of multiple modules such as a body 1, a clamping mechanism, a hydraulic system and an impact module.

[0020] The body 1 of the disassembly tool serves as its frame and adopts an integrated structure. The body 1 can be made of non-magnetic, high-strength materials such as austenitic stainless steel or high-strength aluminum alloy. The body 1 is used to support the clamping mechanism, hydraulic system, and impact module. The clamping mechanism is installed at one end of the body 1, the hydraulic system is installed in the middle section, and the impact module is installed at the tail. The end of the body 1 furthest from the clamping mechanism can serve as a handheld part.

[0021] The clamping mechanism is a three-jaw chuck 4, which is sleeved on the front end of the body 1 and rotatably connected to the body 1. The jaws 41 of the three-jaw chuck 4 protrude relative to the body 1 and are used to clamp bolts. The three-jaw chuck 4 uses the radial movement of three movable jaws 41 evenly distributed on the chuck body to clamp and position the workpiece. The three-jaw chuck 4 is generally used in the machine tool field as a clamping component. In this embodiment, the existing three-jaw chuck 4 structure is scaled down proportionally, and the jaws 41 are suitable for clamping bolts ranging from M8 to M36. The end of the jaw 41 corresponding to the bolt is chamfered to handle bolts that are close together and have limited clamping space. To accommodate the structure of the three-jaw chuck 4, the body 1 of the disassembly tool has a U-shaped clamping structure at the end corresponding to the three-jaw chuck 4, which is used to rotatably connect to the upper and lower ends of the three-jaw chuck 4 housing respectively; the jaws 41 protrude relative to the three-jaw chuck 4 housing and are used to clamp bolts. The opening and closing of the jaws 41 of the three-jaw chuck 4 are achieved by rotating the bevel gear of the three-jaw chuck using a tool. That is, the workpiece is clamped and released by the synchronous movement of the jaws 41. The hydraulic system includes a hydraulic cylinder 5, a pressure gauge 7, and a pressure relief valve 8. The pressure relief valve 8 and the pressure gauge 7 are located on the pipeline connecting the hydraulic cylinder 5 to an external hydraulic pump. The pressure relief valve 8 controls the system's maximum pressure to prevent pressure overload; the pressure gauge 7 monitors the working pressure of the hydraulic system in real time. In terms of installation, the hydraulic cylinder 5 is axially positioned inside the body 1, specifically in the middle section of the body 1. The hydraulic cylinder 5 is a pull-rod type with a double piston rod 6 and is externally connected to a manual hydraulic pump 12. One end of the piston rod 6 of the hydraulic cylinder 5 is hinged to the outside of the three-jaw chuck 4 to drive the three-jaw chuck 4 to rotate, providing torque. The other end of the piston rod 6 corresponds to the impact module, providing high-frequency impact force. Here, the piston rod 6 of the hydraulic cylinder 5 is mainly affected by unidirectional displacement. In implementation, a displacement seal can be selected to improve the seal.

[0022] The impact module includes an electromagnetic oscillator 9 and an impact block 10. The impact block 10 is fixed to the other end of the piston rod 6. The electromagnetic oscillator 9 is fixed to the body 1 and electromagnetically coupled to the impact block 10, applying a unidirectional electromagnetic impact to the impact block 10 to generate a high-frequency impact on the piston rod 6 towards the clamping mechanism. The electromagnetic oscillator 9 uses external AC power and has an adjustable frequency of 50-200Hz. The impact block 10 is made of tungsten carbide alloy. To isolate the effects of electromagnetic oscillation, a magnetic shielding block 11 is provided for the piston rod 6 to pass through, thus isolating the hydraulic pressure 5 and the impact module, ensuring the overall safety of the tool.

[0023] During operation, first clamp the three-jaw chuck 4 onto the bolt to be disassembled; hold the stabilizing tool. Start the hydraulic system, providing and maintaining hydraulic pressure through the manual hydraulic pump 12, i.e., providing stable pressure output. Specifically, the piston rod 6 is eccentrically hinged to the three-jaw chuck 4, providing a stable torque output to the three-jaw chuck 4. Then, start the electromagnetic oscillator 9, which forms an electromagnetic coupling with the impact block 10. When the electromagnetic coil is energized, it generates a unidirectional impact force on the impact block 10. This force is transmitted through the piston rod 6 to the piston rod 6 of the hydraulic system 5, forming a high-frequency pulsating impact torque. This high-frequency impact can effectively break the rust and adhesion between the bolt and nut. After the bolt rust and adhesion are broken, the bolt / nut rotates and shifts, causing a change in the displacement of the piston rod 6. At this point, the hydraulic pressure changes significantly and is displayed on the pressure gauge 7. At this point, the impact module and hydraulic system can be stopped, and the bolt can be disassembled manually by operating this tool counterclockwise, or other tools such as wrenches can be used to complete the subsequent disassembly. This tool's main function is to handle rusted bolts. It provides torque through a hydraulic system and high-frequency unidirectional impact force through an impact module. Both torque and impact force are transmitted through the same piston rod 6, resulting in a more compact structure and improved efficiency, effectively handling the disassembly of rusted bolts. Under continuous torque and impact force, it effectively breaks down the rust and adhesion between the bolt and nut, thus achieving initial disassembly of the rusted bolt. Then, the normal bolt disassembly procedure can be followed. The entire process is simple to operate.

[0024] In this embodiment, the structure of the main body 1 is divided into two parts: a fixed section 2 and a gripping section 3. The fixed section 2 is used to install the working component, the three-jaw chuck 4. The gripping section 3 has a rectangular cross-section design, which facilitates the installation of the hydraulic system and the impact module. A pressure gauge 7 is embedded on the end face of the gripping section 3. The pressure gauge 7 is flush with the end face, which allows for observation of the working pressure of the hydraulic system and avoids potential safety hazards caused by protruding components. The pressure relief valve 8 is located on the side of the gripping section 3 for easy one-handed operation. The outer surface of the gripping section 3 is also covered with a shock-absorbing layer 13, which can be made of rubber or other elastic materials, and can effectively absorb and buffer vibrations caused by high-frequency impacts.

[0025] In this embodiment, the clamping mechanism is eccentrically positioned so that the axis of the piston rod 6 is tangent to the center of the three-jaw chuck 4. This design maximizes the conversion of the thrust of the piston rod 6 into rotational torque.

[0026] Here, a ratchet ring is fitted around the outer periphery of the three-jaw chuck 4. This ratchet ring engages with a pawl fixed to the body 1 to form a one-way locking mechanism. When the electromagnetic oscillator 9 generates an impact, the engagement of the pawl and the ratchet ring restricts the chuck to rotate only in the disassembly direction, preventing reverse rotation caused by the impact energy.

[0027] To further enhance safety, a temperature sensor is embedded in the clamping mechanism. This sensor is connected to the power control circuit of the electromagnetic oscillator 9. When the temperature of the clamping part is detected to be too high, the power supply to the electromagnetic oscillator 9 can be automatically cut off to prevent safety hazards caused by overheating.

[0028] When using the tool, first align the three-jaw chuck 4 with the bolt to be removed and clamp it. Then, operate the manual hydraulic pump 12 to gradually increase the hydraulic pressure 5, and observe the working pressure through the pressure gauge 7. When the torque applied by the hydraulic system is insufficient to loosen the bolt, activate the electromagnetic oscillator 9 to generate high-frequency impacts. This combined approach, by superimposing intermittent or continuous impact torques on top of the continuous hydraulic torque, significantly improves the success rate of removing rusted bolts. After disassembly, press the pressure relief valve 8 to release the hydraulic system pressure, and then remove the tool.

[0029] This invention creatively combines stable hydraulic torque with high-frequency electromagnetic impact. Through their synergistic effect, it effectively overcomes the limitations of traditional disassembly tools when dealing with corroded bolts. The stable high torque provided by the hydraulic system ensures initial mechanical loosening, while the high-frequency impact effectively breaks down the rust layer. The combined effect significantly improves disassembly efficiency and success rate. Simultaneously, the added one-way locking mechanism ensures that impact energy is not transmitted in the reverse direction, improving energy utilization efficiency. Comprehensive safety design guarantees safety and comfort during operation.

[0030] The above description is only a preferred embodiment of the present utility model and is not intended to limit the scope of the patent application of the present utility model. All equivalent changes, equivalent substitutions or modifications made within the technical spirit and principles indicated by the present utility model should be included within the scope of patent protection covered by the present utility model.

Claims

1. A rusted bolt dismounting tool with hydraulic force amplification and high frequency impact, characterized in that, include: ontology; The clamping mechanism is a three-jaw chuck, which is sleeved on the front end of the body and rotatably connected to the body. The jaws of the three-jaw chuck protrude relative to the three-jaw chuck and are used to clamp the bolt. The hydraulic system includes a hydraulic cylinder, a pressure gauge, and a pressure relief valve. The hydraulic cylinder is arranged axially inside the body and is a double-piston rod hydraulic cylinder connected to an external hydraulic pump. One end of the piston rod of the hydraulic cylinder is hinged to the outside of the three-jaw chuck to drive the three-jaw chuck to rotate, and the other end of the piston rod corresponds to the impact module. The impact module includes an electromagnetic oscillator and an impact top block. The impact top block is fixed to the other end of the piston rod, and the electromagnetic oscillator is fixed to the body and electromagnetically coupled to the impact top block. It is used to apply a unidirectional electromagnetic impact to the impact top block, so that the piston rod generates a high-frequency impact in the direction of the clamping mechanism.

2. The rusted bolt dismounting tool with hydraulic force increasing and high frequency impact according to claim 1, characterized in that: The three-jaw chuck is provided with a ratchet ring on its outer periphery, and the body is provided with a pawl that cooperates with the ratchet ring to form a one-way locking mechanism to restrict the three-jaw chuck from rotating unidirectionally along the high-frequency impact direction.

3. The rusted bolt dismounting tool with hydraulic force increasing and high frequency impact according to claim 1, characterized in that: The clamping mechanism is eccentrically positioned at one end of the body, such that the axis of the piston rod is tangent to the center of the three-jaw chuck.

4. The rusted bolt detaching tool with hydraulic force increasing and high frequency impact according to claim 1, characterized in that: The hydraulic pump connected to the hydraulic system is a manual hydraulic pump.

5. The rusted bolt unfastening tool with hydraulic force amplification and high-frequency impact according to claim 1, characterized in that: The body includes a fixed section and a gripping section. The fixed section is provided with the clamping mechanism, and the gripping section has a rectangular cross-section.

6. The rusted bolt detaching tool with hydraulic force increasing and high frequency impact according to claim 5, characterized in that: The pressure gauge is disposed on the end face of the grip section and is flush with the end face, and a pressure relief valve switch is provided on one side of the grip section for controlling the pressure relief valve.

7. The rusted bolt unfastening tool with hydraulic force amplification and high-frequency impact according to claim 5, characterized in that: The outer side of the grip section is provided with a shock-absorbing layer.

8. The rusted bolt unfastening tool with hydraulic force amplification and high-frequency impact according to claim 1, characterized in that: The clamping mechanism has a built-in temperature sensor, which is connected to the power control circuit of the electromagnetic oscillator and is used to control the operation of the electromagnetic oscillator according to the temperature.

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