Steel pipe outer surface thread machining equipment for mountain anchor rod

Abstract

The invention relates to the technical field of thread cutting machining, in particular to steel pipe outer surface thread machining equipment for mountain anchor rods. The driving assembly comprises a chuck used for clamping the mountain anchor rod, and the chuck is driven to rotate and move above the base; the cutting assembly comprises a fixed seat fixedly installed above the base, a conical machining groove is formed in the fixed seat, a core penetrating head is arranged in the conical machining groove, a heat absorption semiconductor is arranged in the core penetrating head, and a clamping head is arranged in the conical machining groove and above the core penetrating head. Through linkage of the magnet adsorption head and the piston plate, when the machining length of the anchor rod is increased, magnetic adsorption force automatically pulls the piston plate to slide in the sliding tank in an airtight mode, so that the magnet adsorption head is tightly attached to the outer wall of the anchor rod, continuous and stable radial supporting force is provided, and radial shaking in the machining process of a long rod piece is effectively restrained; and the uniformity and the depth consistency of the thread groove are ensured.

Description

Technical Field

[0001] This invention relates to the field of thread cutting technology, specifically to a device for machining the outer surface threads of steel pipes used in mountain anchor bolts. Background Technology

[0002] Mountain anchors are reinforcement facilities used in geotechnical engineering, primarily to enhance the stability of mountains or rock masses. They are typically made of reinforcing bars, steel pipes, or other robust materials and are fixed underground or into the rock mass using mechanical or chemical methods to prevent landslides, collapses, and other disasters. The outer wall of the mountain anchor needs to be threaded, mainly to enhance the anchoring effect and facilitate connection with other components. The threaded outer wall increases the friction and adhesion between the anchor and the soil / rock layer, thereby improving the anchoring effect, which is crucial for preventing geological disasters such as landslides and collapses. There are many existing thread processing devices. For example, patent CN118650220B discloses a steel pipe thread processing device. This device uses multiple adjustable-pitch cutters to process the steel pipe thread to a set size in a single cut, thus improving thread processing efficiency. It employs at least three cutters, each independently controllable, so even if a cutter fails, it can still perform normal thread processing. However, existing mountain anchor bolts typically require a processing length of 15 to 30 meters. The equipment relies on static auxiliary brackets (such as extrusion motor wheels) to support the anchor bolts, and cannot dynamically adjust the support position as the processing progresses. When the processing length exceeds 5 meters, the anchor bolts are subjected to alternating radial forces, resulting in forced vibration (amplitude up to ±0.5 mm), causing the thread groove depth to fluctuate by more than ±0.2 mm, which seriously affects the anchoring force. Summary of the Invention

[0003] To address the aforementioned shortcomings of existing technologies, this invention provides a steel pipe outer surface thread processing device for mountain anchor bolts, which can effectively solve the problem of vibration during thread processing when the workpiece is too long in existing technologies.

[0004] To achieve the above objectives, the present invention provides the following technical solution: This invention provides a device for machining the outer surface thread of a steel pipe for use as a mountain anchor bolt, comprising: Base; A drive assembly, the drive assembly including a chuck for clamping a mountain anchor bolt, the chuck being driven to rotate and move above a base; A cutting assembly includes a fixed base fixedly mounted above a base, a tapered machining groove is provided in the fixed base, a core-piercing head is provided in the tapered machining groove, a heat-absorbing semiconductor is provided in the core-piercing head, a chuck is provided in the tapered machining groove and above the core-piercing head, and cutting teeth are fixedly mounted on the inner wall of the chuck. A processing auxiliary component includes a sliding tank symmetrically arranged above the base and at a position away from the chuck. A piston plate is slidably mounted on the inner wall of the sliding tank in an airtight manner. A first spring is fixedly installed between the piston plate and the sliding tank. A connecting rod is fixedly installed on one side of the piston plate. A magnetic adsorption head is fixedly installed at one end of the connecting rod. A sliding surface is fixedly installed on the inner wall of the magnetic adsorption head. A heating box is fixedly installed on the outer wall of the sliding tank. A heating semiconductor is fixedly installed inside the heating box.

[0005] Preferably, a support plate is fixedly installed on the lower end face of the base, a first threaded rod is rotatably installed inside the support plate, a first rotary drive component is fixedly installed on one side of the support plate, the output end of the first rotary drive component passes through the support plate and is fixedly connected to the first threaded rod, a movable seat is threadedly installed on the outer wall of the first threaded rod, one side of the movable seat is rotatably connected to a chuck, a second rotary drive component is fixedly installed on the other side of the movable seat, the output end of the second rotary drive component passes through the movable seat and is fixedly connected to the chuck, and support frames are fixedly installed on both sides of the support plate, one end of the support frame is fixedly connected to the support plate.

[0006] Preferably, a fixing frame is fixedly installed on the upper end of the fixing base, and a lifting drive device is fixedly installed on the upper end of the fixing frame. The output end of the lifting drive device passes through the fixing frame and is fixedly connected to the clamp head.

[0007] Preferably, two liquid outlet grooves are symmetrically opened in the conical machining groove, and two cutting oil tanks are symmetrically installed on the upper end face of the fixed base. The cutting oil tanks are connected to the liquid outlet grooves, and the cutting oil tanks are connected to each other through a liquid inlet pipe.

[0008] Preferably, a collection box is fixedly installed on both sides of the fixed base at the position corresponding to the conical processing groove, and the lower end face of the collection box is connected to a drain pipe.

[0009] Preferably, a vertical plate is fixedly installed on the upper surface of the base at a position away from the fixed seat, and a straight rod is fixedly installed on one side of the vertical plate, with one end of the straight rod threadedly connected to the core head.

[0010] Preferably, the upper surface of the base is provided with a sliding seat, and a U-shaped frame is slidably installed in the sliding seat. Mounting holes are provided on the inner walls of both sides of the U-shaped frame, and the inner walls of the mounting holes are fixedly connected to the sliding tank. A screw is threaded onto the upper surface of the U-shaped frame. External brackets are fixedly installed on both sides of the U-shaped frame and below the sliding tank. The upper ends of the external brackets are fixedly connected to the sliding tank. A pressure relief valve is embedded in the outer wall of the sliding tank. A pressure monitoring element is fixedly installed on the inner wall of the sliding tank. The pressure monitoring element and the pressure relief valve are electrically connected to a controller. One side of the external bracket is fixedly connected to a heating box. A horizontal plate is fixedly installed on the inner wall of the U-shaped frame above the screw. An air bladder is fixedly installed on one side of the horizontal plate. The air bladder is filled with chemically stable nitrogen gas with a suitable coefficient of thermal expansion as the expansion gas medium. The air bladder and the sliding tank are connected by a gas supply pipe. A solenoid valve is fixedly installed on the inner wall of the gas supply pipe, and the solenoid valve is electrically connected to the controller.

[0011] Preferably, a rotating tube is rotatably installed inside the vertical plate. One end of the rotating tube extends through the vertical plate to the inner wall of the straight rod. A second threaded rod is threaded onto the inner wall of the rotating tube. A movable plate is fixedly installed at one end of the second threaded rod. The movable plate is slidably connected to the inner wall of the straight rod. External covers are fixedly installed on both sides of the movable plate. A conductive contact plate is embedded on one side of the external cover. A connecting plate is slidably installed on the inner wall of the external cover. A second spring is fixedly installed between the connecting plate and the movable plate. The connecting plate is electrically connected to a controller. The conductive contact plate is connected to the power supply circuits of the heat-absorbing semiconductor and the heat-generating semiconductor respectively through wires. When the connecting plate contacts the conductive contact plate, the controller or power supply provides operating current to the heat-absorbing semiconductor and the heat-generating semiconductor through the circuit.

[0012] The technical solution provided by this invention has the following advantages compared with the known prior art: First, the magnetic adsorption head is linked with the piston plate. When the length of the anchor rod increases, the magnetic adsorption force automatically pulls the piston plate to slide airtightly in the sliding tank, so that the magnetic adsorption head is tightly attached to the outer wall of the anchor rod, providing a continuous and stable radial support force, effectively suppressing radial vibration in the processing of long rods, and ensuring the uniformity and depth consistency of the thread groove.

[0013] Secondly, the heat-absorbing semiconductor built into the core-piercing head actively absorbs the cutting heat, preventing the core-piercing head from getting stuck on the inner wall of the anchor rod due to thermal expansion; the heating semiconductor outside the sliding tank drives the gas expansion, enhancing the clamping force of the piston plate on the anchor rod. The two work together based on the thermoelectric effect (Peltier effect) and the principle of gas expansion, which significantly improves the long-term stability of the equipment while reducing the risk of thermal damage to key components. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0015] Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 This is a side view of the structure of the present invention; Figure 3 This is a schematic diagram of the cutting assembly of the present invention; Figure 4 This is a schematic diagram of the processing auxiliary component of the present invention; Figure 5 This is an exploded structural diagram of the sliding tank of the present invention; Figure 6 This is a schematic diagram of the rotating tube of the present invention; Figure 7 This is an exploded structural diagram of the outer cover of the present invention.

[0016] Reference numerals: 1. Base; 2. Drive assembly; 201. Support plate; 202. First threaded rod; 203. Moving seat; 204. Support frame; 205. Chuck; 3. Cutting assembly; 301. Vertical plate; 302. Straight rod; 303. Through-core head; 304. Fixed seat; 305. Conical machining groove; 306. Fixed frame; 307. Lifting drive device; 308. Chuck; 309. Cutting teeth; 310. Cutting oil tank; 311. Inlet pipe; 312. Outlet tank; 313. Collection box; 314. Drain pipe; 4 401. Processing auxiliary components; 402. Sliding seat; 403. U-shaped frame; 404. Sliding tank; 405. Piston plate; 406. Connecting rod; 407. Magnetic adsorption head; 408. Sliding surface; 409. First spring; 410. Solenoid valve; 411. Horizontal plate; 412. Air bag; 413. Air supply pipe; 414. External frame; 415. Heating box; 416. Rotating tube; 417. Second threaded rod; 418. Moving plate; 419. External cover; 420. Conductive contact plate; 421. Second spring; 422. Connecting plate. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, 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, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0018] The present invention will be further described below with reference to embodiments.

[0019] Example: Refer to Figures 1 to 7 A device for machining threads on the outer surface of steel pipes for use as anchor bolts in mountainous areas, comprising: Base 1; Drive assembly 2, which includes a chuck 205 for holding the mountain anchor rod, the chuck 205 being driven to rotate and move above the base 1; The cutting assembly 3 includes a fixed base 304 fixedly installed above the base 1. The fixed base 304 has a conical machining groove 305. A through-hole head 303 is provided in the conical machining groove 305. The through-hole head 303 is made of iron. When the inner wall of the mountain anchor rod slides in connection with the outer wall of the through-hole head 303, it can effectively prevent radial deformation during cutting. A heat-absorbing semiconductor is provided in the through-hole head 303. A chuck 308 is provided in the conical machining groove 305 and above the through-hole head 303. Cutting teeth 309 are fixedly installed on the inner wall of the chuck 308. The inner wall of the conical machining groove 305 can match the outer wall of the mountain anchor rod. Placing the mountain anchor rod in the conical machining groove 305 can fix it and prevent shaking. The processing auxiliary component 4 includes a sliding tank 403 symmetrically arranged above the base 1 and at a position away from the chuck 205. A piston plate 404 is slidably mounted on the inner wall of the sliding tank 403. A first spring 408 is fixedly installed between the piston plate 404 and the sliding tank 403. A connecting rod 405 is fixedly installed on one side of the piston plate 404. A magnetic adsorption head 406 is fixedly installed at one end of the connecting rod 405. A sliding surface 407 is fixedly installed on the inner wall of the magnetic adsorption head 406. A heating box 414 is fixedly installed on the outer wall of the sliding tank 403. A heating semiconductor is fixedly installed inside the heating box 414.

[0020] Reference Figure 2A support plate 201 is fixedly installed on the lower end face of the base 1. A first threaded rod 202 is rotatably installed inside the support plate 201. A first rotary drive is fixedly installed on one side of the support plate 201. The output end of the first rotary drive passes through the support plate 201 and is fixedly connected to the first threaded rod 202. A movable seat 203 is threadedly installed on the outer wall of the first threaded rod 202. One side of the movable seat 203 is rotatably connected to the chuck 205. A second rotary drive is fixedly installed on the other side of the movable seat 203. The output end of the second rotary drive passes through the movable seat 203 and is fixedly connected to the chuck 205. Support frames 204 are fixedly installed on both sides of the support plate 201. One end of the support frame 204 is fixedly connected to the support plate 201. The first rotary drive and the second rotary drive use existing servo motors. A servo motor is a type of motor used for precise motion control. It typically consists of a motor body, a driver, and a feedback system (such as an encoder). It can adjust the angle, speed, and position of motion according to the input control signal.

[0021] Reference Figure 3 A fixed frame 306 is fixedly installed on the upper end of the fixed base 304, and a lifting drive device 307 is fixedly installed on the upper end of the fixed frame 306. The output end of the lifting drive device 307 passes through the fixed frame 306 and is fixedly connected to the clamp head 308. The lifting drive device 307 uses an existing hydraulic cylinder. A hydraulic cylinder is a mechanical device that achieves linear motion through hydraulic technology. It is usually used in hydraulic systems. It can convert the pressure of liquid into mechanical energy, thereby driving mechanical parts to complete a certain work task.

[0022] Reference Figure 3 Two liquid outlet grooves 312 are symmetrically opened inside the conical machining groove 305. Two cutting oil tanks 310 are symmetrically installed on the upper end face of the fixed base 304. The cutting oil tanks 310 are connected to the liquid outlet grooves 312, and the cutting oil tanks 310 are connected to each other through the liquid inlet pipe 311.

[0023] Reference Figure 3 A collection box 313 is fixedly installed on both sides of the fixed base 304 at the position of the corresponding conical processing groove 305, and a drain pipe 314 is connected to the lower end face of the collection box 313.

[0024] Reference Figure 4 A vertical plate 301 is fixedly installed on the upper surface of the base 1 at a position away from the fixed seat 304. A straight rod 302 is fixedly installed on one side of the vertical plate 301, and one end of the straight rod 302 is threadedly connected to the through head 303.

[0025] Reference Figures 5 to 6A sliding seat 401 is provided on the upper surface of the base 1. A U-shaped frame 402 is slidably installed inside the sliding seat 401. Mounting holes are provided on the inner walls of both sides of the U-shaped frame 402. The inner walls of the mounting holes are fixedly connected to the sliding tank 403. Screws are threaded onto the upper surface of the U-shaped frame 402. External brackets 413 are fixedly installed on both sides of the U-shaped frame 402 and below the sliding tank 403. The upper ends of the external brackets 413 are fixedly connected to the sliding tank 403. A pressure relief valve is embedded in the outer wall of the sliding tank 403. A pressure monitoring element is fixedly installed on the inner wall of the sliding tank 403. The pressure monitoring element uses an existing strain gauge pressure sensor based on piezoelectricity. The principle of the effect is that the strain gauge inside the sensor senses pressure changes and converts mechanical deformation into an electrical signal. The pressure monitoring element and the pressure relief valve are electrically connected to the controller. One side of the external frame 413 is fixedly connected to the heating box 414. A horizontal plate 410 is fixedly installed on the inner wall of the U-shaped frame 402 above the screw. An air bladder 411 is fixedly installed on one side of the horizontal plate 410. The air bladder 411 is filled with nitrogen gas, which has stable chemical properties and a suitable coefficient of thermal expansion, as the expansion gas medium. Nitrogen gas is the main component of air, accounting for about 78% of air. It is non-toxic, colorless, odorless, and relatively stable at room temperature. When nitrogen gas is heated, it expands but does not produce harmful effects. The air bladder 411 and the sliding tank 403 are connected by a gas supply pipe 412. A solenoid valve 409 is fixedly installed on the inner wall of the gas supply pipe 412 and is electrically connected to the controller. Twisting the screw at the top of the U-shaped frame 402 can drive the U-shaped frame 402 to slide horizontally within the sliding seat 401, matching anchor rods of different lengths (such as 15 meters or 30 meters). Rotating the rotating tube 415 drives the second threaded rod 416, which in turn moves the moving plate 417 within the straight rod 302, ensuring that the outer cover 418 is always aligned with the position of the magnetic adsorption head 406, thus achieving synchronous adjustment of support and temperature control. When the length of the anchor bolt increases, the magnetic adsorption head 406 automatically adsorbs the outer wall of the anchor bolt through magnetic force, causing the piston plate 404 to slide airtightly within the sliding tank 403. The movement of the piston plate 404 compresses the gas within the sliding tank 403. The air pressure monitoring element detects the air pressure changes in real time and adjusts the opening and closing of the solenoid valve 409 through the controller. When the air pressure rises, the solenoid valve 409 closes, the piston plate 404 is fixed in position, and the magnetic adsorption head 406 provides stable radial support force. When the air pressure is too high, the pressure relief valve automatically opens to release pressure and protect the structure of the sliding tank 403.

[0026] Reference Figures 6 to 7A rotating tube 415 is rotatably installed inside the vertical plate 301. One end of the rotating tube 415 extends through the vertical plate 301 to the inner wall of the straight rod 302. A second threaded rod 416 is threadedly installed on the inner wall of the rotating tube 415. A movable plate 417 is fixedly installed on one end of the second threaded rod 416. The movable plate 417 is slidably connected to the inner wall of the straight rod 302. An outer cover 418 is fixedly installed on both sides of the movable plate 417. A conductive contact plate 419 is embedded on one side of the outer cover 418. A connecting plate 421 is slidably installed on the inner wall of the outer cover 418. A second spring 420 is fixedly installed between the connecting plate 421 and the movable plate 417. The connecting plate 421 is electrically connected to a controller. The conductive contact plate 419 is connected to the power supply circuits of the heat-absorbing semiconductor and the heat-generating semiconductor through wires. When the connecting plate 421 contacts the conductive contact plate 419, the controller or power supply provides working current to the heat-absorbing semiconductor and the heat-generating semiconductor through the circuit. When the connecting plate 421 contacts the conductive contact plate 419 and is energized, the voltage passes through the heat-absorbing semiconductor. Based on the Peltier effect, the voltage direction causes the heat-absorbing semiconductor to cool down, actively absorbing the heat of the core-piercing head 303 and preventing it from thermally expanding and jamming the inner wall of the anchor rod. When the current passes through the heating semiconductor, its exothermic characteristics cause the temperature of the heating box 414 to rise, heating the gas in the sliding tank 403. The gas expands and pushes the piston plate 404, enhancing the clamping force of the magnetic adsorption head 406 on the anchor rod. The heat-absorbing semiconductor controls the temperature of the core-piercing head 303, and the heating semiconductor enhances the clamping force, ensuring the long-term stable operation of the equipment.

[0027] The working principle of this invention is as follows: The operator clamps the mountain anchor rod onto the chuck 205, then activates the first rotary drive to rotate the first threaded rod 202. The first threaded rod 202, through its threaded connection with the movable seat 203, drives the movable seat 203 to move on the upper surface of the support plate 201. The operator then activates the second rotary drive to rotate the chuck 205, thereby driving the mountain anchor rod to move and rotate towards the fixed seat 304. The inner wall of one end of the mountain anchor rod will slide into contact with the outer wall of the core head 303. When one end of the mountain anchor rod moves into the conical machining groove 305 and contacts the core head 303, the operator (or automatic control) activates the lifting drive device 307 to drive the chuck 308 to descend within the conical machining groove 305. The chuck 308 will drive the cutting teeth 309 to descend together and contact the outer wall of the mountain anchor rod, cutting as the mountain anchor rod is driven to rotate and move, thus cutting a threaded groove on the outer wall of the mountain anchor rod. It should be noted that cutting oil can be injected into the cutting oil tank 310 through the inlet pipe 311. The cutting oil injected into the cutting oil tank 310 flows into the inner bottom of the conical machining groove 305 through the outlet groove 312. This can cool the mountain anchor rod when it is driven to rotate and move for cutting, reduce the cutting temperature, and prevent thermal deformation of the mountain anchor rod after cutting, which would affect the quality of the mountain anchor rod. The cutting fluid that has cooled in the conical machining groove 305 will flow into the collection box 313 and then be discharged out through the drain pipe 314. It should also be noted that the debris generated during the cutting of the thread groove needs to be cleaned manually after processing to prevent the debris from moving and scratching the mountain anchor rod or affecting the thread groove processing. As the mountain anchor is continuously driven to rotate and move to process the thread groove, one end of the mountain anchor will continuously move against the outer wall of the mandrel 303 and the straight rod 302. When the moving length of the mountain anchor is too long, the moving end of the mountain anchor will vibrate during the thread groove processing, which will affect the accuracy of the cutting teeth 309 when cutting the thread groove. When one end of the mountain anchor moves between the magnetic adsorption heads 406, the magnetic adsorption heads 406 will approach the mountain anchor and contact the outer wall of the mountain anchor due to magnetic adsorption. When the magnetic adsorption heads 406 approach the outer wall of the mountain anchor, they drive the piston plate 404 to slide airtightly on the inner wall of the sliding tank 403 through the connecting rod 405 and stretch the first spring 408 (at this time). The solenoid valve 409 is a valve core opening device. The air pressure inside the sliding tank 403 is increased. The pressure monitoring element generates a corresponding electrical signal according to the change in air pressure. The gas inside the airbag 411 is delivered to the sliding tank 403 through the air supply pipe 412. After the magnetic adsorption head 406 contacts the outer wall of the mountain anchor rod, the air pressure state of the sliding tank 403 gradually stabilizes. The pressure monitoring element will no longer generate an electrical signal due to the change in air pressure. The controller closes the solenoid valve 409 by controlling the voltage input to the solenoid valve 409. The piston plate 404 cannot slide inside the sliding tank 403 due to the elasticity of the first spring 408, so that the magnetic adsorption head 406 supports the mountain anchor rod. When the magnetic adsorption head 406 contacts the outer wall of the mountain anchor rod, the connecting plate 421 will also be magnetically adsorbed by the magnetic adsorption head 406 and slide within the outer cover 418, stretching the second spring 420 and contacting the conductive contact plate 419 to conduct electricity. The conductive contact plate 419 delivers voltage to the heat-absorbing semiconductor and the heating semiconductor respectively through the wires. Through the existing thermoelectric effect, when the voltage is delivered to the heat-absorbing semiconductor and the heating semiconductor respectively through the wires (the heat-absorbing semiconductor and the heating semiconductor are made of two different materials), the heat-absorbing semiconductor will absorb heat, and the heating semiconductor will release heat. The heat-absorbing semiconductor will absorb heat and cool the core head 303 within the core head 303, preventing the heat generated when the cutting teeth 309 process the thread groove on the outer wall of the mountain anchor rod for a long time from being transferred to the core head 303, and preventing the thermal expansion of the core head 303. If the expansion exceeds the fit clearance between the anchor rod and the inner wall of the mountain, it will cause a seizing mismatch. In this way, by combining the heat-absorbing semiconductor and the cutting fluid, the temperature of the core head 303 can be effectively controlled when machining a long mountain anchor rod, so as to avoid the failure of the machining of the thread groove on the outer wall of the mountain anchor rod due to thermal expansion of the core head 303 caused by the cutting temperature. The heating semiconductor will heat the sliding tank 403 in the heating box 414, so that the gas entering the sliding tank 403 will continuously expand and push the piston plate 404 to drive the magnetic adsorption head 406 to continuously clamp and fix the mountain anchor rod, preventing the mountain anchor rod from shaking due to excessive machining length. The sliding surface 407 is made of PTFE coated material, so that the mountain anchor rod can still rotate and move through the sliding surface 407 when the magnetic adsorption head 406 clamps the mountain anchor rod. It should be noted that the operator can drive the U-shaped frame 402 to slide within the sliding seat 401 by turning the screw according to the processing length of the mountain anchor rod, so as to match the length of the anchor rod. In this way, when one end of the mountain anchor rod moves to a certain length, it can effectively clamp the mountain anchor rod and reduce the temperature of the core head 303. Furthermore, by rotating the rotating tube 415, the second threaded rod 416 and the moving plate 417 can be driven to move on the inner wall of the straight rod 302 to match the moving position of the U-shaped frame 402. When the gas in the sliding tank 403 is heated and expands to a certain expansion amount, and exceeds the preset signal value of the pressure monitoring element, the controller will control the voltage input to the pressure relief valve, so that the pressure relief valve opens to release pressure and prevent excessive gas expansion from damaging the sliding tank 403. After processing, the lifting drive device 307 lifts the chuck 308 out of the anchor bolt thread, the first rotating drive component reverses, and the drive moving seat 203 drives the anchor bolt back. After the mountain anchor bolt completely exits the conical processing groove 305 and disengages from the magnetic adsorption head 406 and the core head 303, the operator releases the chuck 205 and removes the processed mountain anchor bolt.

[0028] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A device for machining the outer surface threads of steel pipes used for mountain anchor bolts, characterized in that, include: Base (1); The drive assembly (2) includes a chuck (205) for clamping the mountain anchor rod, the chuck (205) being driven to rotate and move above the base (1); The cutting assembly (3) includes a fixed seat (304) fixedly installed above the base (1), a tapered machining groove (305) is provided in the fixed seat (304), a through head (303) is provided in the tapered machining groove (305), a heat-absorbing semiconductor is provided in the through head (303), a chuck (308) is provided in the tapered machining groove (305) and above the through head (303), and cutting teeth (309) are fixedly installed on the inner wall of the chuck (308). The processing auxiliary component (4) includes a sliding tank (403) symmetrically arranged above the base (1) and at a position away from the chuck (205). A piston plate (404) is airtightly slidably installed on the inner wall of the sliding tank (403). A first spring (408) is fixedly installed between the piston plate (404) and the sliding tank (403). A connecting rod (405) is fixedly installed on one side of the piston plate (404). A magnetic adsorption head (406) is fixedly installed at one end of the connecting rod (405). A sliding surface (407) is fixedly installed on the inner wall of the magnetic adsorption head (406). A heating box (414) is fixedly installed on the outer wall of the sliding tank (403). A heating semiconductor is fixedly installed inside the heating box (414).

2. The equipment for processing the outer surface threads of steel pipes for mountain anchor bolts according to claim 1, characterized in that, A support plate (201) is fixedly installed on the lower end face of the base (1). A first threaded rod (202) is rotatably installed inside the support plate (201). A first rotary drive is fixedly installed on one side of the support plate (201). The output end of the first rotary drive passes through the support plate (201) and is fixedly connected to the first threaded rod (202). A movable seat (203) is threaded on the outer wall of the first threaded rod (202). One side of the movable seat (203) is rotatably connected to the chuck (205). A second rotary drive is fixedly installed on the other side of the movable seat (203). The output end of the second rotary drive passes through the movable seat (203) and is fixedly connected to the chuck (205). Support frames (204) are fixedly installed on both sides of the support plate (201). One end of the support frame (204) is fixedly connected to the support plate (201).

3. The equipment for processing the outer surface threads of steel pipes for mountain anchor bolts according to claim 1, characterized in that, A fixing frame (306) is fixedly installed on the upper end of the fixing base (304), and a lifting drive device (307) is fixedly installed on the upper end of the fixing frame (306). The output end of the lifting drive device (307) passes through the fixing frame (306) and is fixedly connected to the clamp head (308).

4. The steel pipe outer surface thread processing equipment for mountain anchor bolts according to claim 3, characterized in that, Two outlet grooves (312) are symmetrically opened inside the conical machining groove (305). Two cutting oil cans (310) are symmetrically installed on the upper end face of the fixed base (304). The cutting oil cans (310) are connected to the outlet grooves (312), and the cutting oil cans (310) are connected to each other through the inlet pipe (311).

5. The steel pipe outer surface thread processing equipment for mountain anchor bolts according to claim 4, characterized in that, A collection box (313) is fixedly installed on both sides of the fixed base (304) at the position of the corresponding conical processing groove (305), and the lower end face of the collection box (313) is connected to the drain pipe (314).

6. The steel pipe outer surface thread processing equipment for mountain anchor bolts according to claim 5, characterized in that, A vertical plate (301) is fixedly installed on the upper surface of the base (1) at a position away from the fixed seat (304). A straight rod (302) is fixedly installed on one side of the vertical plate (301), and one end of the straight rod (302) is threadedly connected to the core head (303).

7. The steel pipe outer surface thread processing equipment for mountain anchor bolts according to claim 6, characterized in that, A sliding seat (401) is provided on the upper surface of the base (1). A U-shaped frame (402) is slidably installed inside the sliding seat (401). Mounting holes are provided on the inner walls of both sides of the U-shaped frame (402). The inner walls of the mounting holes are fixedly connected to the sliding tank (403). A screw is threaded on the upper surface of the U-shaped frame (402). An external frame (413) is fixedly installed on both sides of the U-shaped frame (402) and below the sliding tank (403). The upper end of the external frame (413) is fixedly connected to the sliding tank (403). A pressure relief valve is embedded in the outer wall of the sliding tank (403). A pressure monitoring element is fixedly installed on the inner wall of the sliding tank (403). The pressure monitoring element and the pressure relief valve are electrically connected to a controller. One side of the external frame (413) is fixedly connected to the heating box (414). A horizontal plate (410) is fixedly installed on the inner wall of the U-shaped frame (402) above the screw. An air bag (411) is fixedly installed on one side of the horizontal plate (410). The air bag (411) is filled with nitrogen gas, which has stable chemical properties and a suitable coefficient of thermal expansion, as the expansion gas medium. The air bag (411) and the sliding tank (403) are connected through a gas supply pipe (412). A solenoid valve (409) is fixedly installed on the inner wall of the gas supply pipe (412). The solenoid valve (409) is electrically connected to the controller.

8. The equipment for processing the outer surface threads of steel pipes for mountain anchor bolts according to claim 7, characterized in that, A rotating tube (415) is rotatably installed inside the vertical plate (301). One end of the rotating tube (415) extends through the vertical plate (301) to the inner wall of the straight rod (302). A second threaded rod (416) is threaded onto the inner wall of the rotating tube (415). A movable plate (417) is fixedly installed at one end of the second threaded rod (416). The movable plate (417) is slidably connected to the inner wall of the straight rod (302). External covers (418) are fixedly installed on both sides of the movable plate (417). One side of the external cover (418) is embedded with... The outer cover (418) is equipped with a conductive contact plate (419), and a connecting plate (421) is slidably installed on the inner wall of the outer cover (418). A second spring (420) is fixedly installed between the connecting plate (421) and the moving plate (417). The connecting plate (421) is electrically connected to a controller. The conductive contact plate (419) is connected to the power supply circuits of the heat-absorbing semiconductor and the heat-generating semiconductor through wires. When the connecting plate (421) contacts the conductive contact plate (419), the controller (or power supply) provides working current to the heat-absorbing semiconductor and the heat-generating semiconductor through the circuit.

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