Accurate frame drilling equipment for penetration of oil-to-electricity high-voltage line of engineering vehicle and use method of accurate frame drilling equipment

Abstract

The invention discloses accurate frame drilling equipment for penetration of an oil-to-electricity high-voltage line of an engineering vehicle and a use method of the accurate frame drilling equipment. A control unit is arranged in an automatic guide vehicle in the device; the workbench is arranged on the automatic guide vehicle, the jacking part is arranged between the automatic guide vehicle and the workbench, and the drilling part is horizontally and slidably connected to the interior of the workbench; the lantern ring is arranged on the drilling piece; the inner supporting pieces are fixedly installed on the lantern ring and arranged in an annular array mode, distance sensors are fixedly installed at the ends of the inner supporting pieces, hydraulic rods are slidably connected into the inner supporting pieces, the inner supporting pieces are arranged on the drilling piece, the distance sensors are matched, the extending length of each set of hydraulic rods is adjusted in a self-adaptive mode, stable supporting of a long drill bit is achieved, and the drilling efficiency is improved. The deviation and resonance phenomena during high-speed rotary cutting are restrained, the drilling effect is improved, the problem that too many workpiece burrs are generated due to deviation of a drill bit is solved, and the requirements of users are met.

Description

Technical Field

[0001] This invention relates to the field of engineering vehicle modification equipment technology, and in particular to a precision drilling device for the frame of an engineering vehicle used for laying high-voltage lines during conversion from gasoline to electric power, and its method of use. Background Technology

[0002] The core of the precision drilling equipment for the chassis of engineering vehicles converted from gasoline to electric is the AGV intelligent vehicle. By mounting a special drilling device on the top of the AGV intelligent vehicle, and utilizing the automatic navigation and movement functions of the AGV intelligent vehicle, it can flexibly enter the designated position on the side of the engineering vehicle chassis to complete the drilling operation, providing installation holes that meet the accuracy requirements for the subsequent laying of high-voltage lines. When drilling inside a vehicle frame, conventional drilling machines cannot fully enter the narrow space inside the frame. Therefore, long drill bits must be used. However, due to the long extension length of the drill bit, it is impossible to support and position it. This causes the drill bit to vibrate during high-speed rotation and cutting. This not only fails to guarantee the dimensional accuracy and surface finish of the hole, but also causes problems such as drill bit deviation and excessive burrs on the workpiece, which have limitations. The reason for this problem is that, under high-speed rotation, the cutting resistance causes the drill bit to deviate. Due to the lack of a support structure, the drill bit cannot be constrained, which leads to resonance. In addition, the thickness and material density of the workpiece at different positions on the frame are different, resulting in unstable cutting resistance, which further aggravates the vibration of the drill bit and has limitations. Summary of the Invention

[0003] The purpose of this invention is to provide a precision drilling device for the chassis of engineering vehicles used for laying high-voltage lines after converting oil vehicles to electric power, and a method for using the device, in order to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a precision drilling device for the chassis of an engineering vehicle used for converting oil to electric high-voltage lines and a method for using the device, comprising an automatic guide vehicle, a workbench, drilling components, a collar, and an inner support component; The automated guided vehicle (AGV) is equipped with a control unit. A worktable is mounted on the AGV, and a lifting component is positioned between the AGV and the worktable to drive the worktable to move vertically. A drilling component is horizontally slidably connected to the inside of the worktable. A collar is mounted on the drilling component. An inner support component is fixedly mounted on the collar and arranged in a circular array. A distance sensor is fixedly mounted at the end of each inner support component, and hydraulic rods are slidably connected inside each inner support component. The distance sensor detects the distance between the inner support component and the inner wall of the vehicle frame, thereby adjusting the extension length of each hydraulic rod to improve the stability of the inner support.

[0005] Preferably, the lifting component includes a main support rod, a secondary support rod, and a rotating rod; The automated guided vehicle has a base fixedly installed inside, and one end of the main support rod is rotatably connected to the base; the secondary support rod is located on one side of the main support rod, and one end of the secondary support rod is rotatably connected to the worktable; rollers are provided on the other side of the main support rod and the secondary support rod, and the rollers are rotatably connected to the worktable and the interior of the automated guided vehicle, respectively; the rotating rod is located inside the main support rod and the secondary support rod.

[0006] Preferably, the lifting component further includes a connecting strip, a support strip, a push-pull cylinder, and a bellows-style protective cover; The connecting strip is fixedly installed on one side of the main support rod; the support strip is fixedly installed on one side of the auxiliary support rod; the push-pull cylinder is rotatably connected to the support strip, and the output shaft of the push-pull cylinder is rotatably connected to the connecting strip; one end of the bellows-style protective cover is fixedly connected to the automatic guide vehicle, and the other end of the bellows-style protective cover is fixedly connected to the workbench.

[0007] Preferably, a guide bar is fixedly installed on the workbench, a mounting seat is slidably connected to the guide bar, a protective shell is fixedly installed on one side of the mounting seat, and a movable cylinder is fixedly installed on one side of the protective shell.

[0008] Preferably, a servo motor is installed inside the protective shell, a spindle power sensor is installed inside the servo motor, a sleeve is fixedly installed on one side of the mounting base, a rotating shaft is slidably connected inside the sleeve, the output shaft of the servo motor is fixedly connected to the rotating shaft, and the output shaft of the moving cylinder is fixedly assembled with the servo motor.

[0009] Preferably, a main flange is fixedly installed at the end of the rotating shaft, and a secondary flange is provided on one side of the main flange. The ends of the main flange and the secondary flange abut against each other. Locking bolts are provided inside the main flange and the secondary flange, and the locking bolts are distributed in a ring array. A drilling tool is fixedly installed at the end of the secondary flange.

[0010] Preferably, the workbench has an internal accommodating cavity, and a movable seat is slidably connected inside the accommodating cavity. The movable seat is fixedly installed with a mounting base. A servo cylinder is fixedly installed on one side of the workbench, and the output shaft of the servo cylinder is fixedly installed with the movable seat. An accordion-style isolation cover is fixedly installed inside the accommodating cavity, and the other end of the accordion-style isolation cover is fixedly installed with the movable seat.

[0011] Preferably, the inner support includes a hydraulic cylinder, an electromagnet, a battery pack, and wires; The hydraulic cylinder is fixedly mounted on the collar. The hydraulic rod is slidably connected inside the hydraulic cylinder. A piston is fixedly mounted at the end of the hydraulic rod, and the end of the piston abuts against the inner wall of the hydraulic cylinder. The distance sensor is fixedly mounted at the end of the hydraulic cylinder. A position sensor is fixedly mounted on the hydraulic rod, and the position sensor is used to detect the extension length of the hydraulic rod. The electromagnet is fixedly mounted at the end of the hydraulic rod, and a status sensor is fixedly mounted inside the electromagnet. The battery pack is fixedly mounted on one side of the hydraulic cylinder. One end of the wire is fixedly connected to the battery pack, and the other end of the wire is fixedly connected to the electromagnet. The battery pack is electrically connected to the electromagnet through the wire.

[0012] Preferably, the inner support further includes an oil delivery pipe, an oil supply component, and a solenoid valve; The oil supply pipe is fixedly installed on one side of the hydraulic cylinder and is connected to the hydraulic cylinder; the oil supply component is installed on the drilling component, and the other end of the oil supply pipe is connected to the oil supply component; the solenoid valve is installed at the connection between the oil supply pipe and the oil supply component.

[0013] Preferably, it includes the following steps; S1. The control unit controls the automatic guided vehicle to move the lifting component to the preset processing position, and at the same time controls the servo cylinder to drive the drilling component to the pre-drilled hole position on the inner wall of the frame. S2. The relative position of the hydraulic rod and the inner wall of the frame is detected and determined by the distance sensor. The hydraulic rod is controlled to extend until it abuts against the inner wall of the frame. The electromagnet is activated and attracted to the inner wall of the frame with a moderate force to achieve initial positioning. S3. Start the servo motor to drive the drill rod to rotate and extend, and drill the target position on the inner wall of the frame; when the control unit determines that the drill bit has entered the stable drilling stage, adjust the attraction of the electromagnet to the maximum, and lock the pressure of the hydraulic rod to suppress vibration during the drilling process; S4. When the control unit determines that the drill bit is about to penetrate the inner wall of the frame, it adjusts the attraction force of the electromagnet to medium and controls the hydraulic rod to enter the ready-to-follow-retreat state to avoid the vibration caused by the release of workpiece stress at the moment of drill bit penetration being transmitted to the drill rod.

[0014] The technical effects and advantages of this invention are as follows: 1. This device, through the internal support component installed on the drilling part, in conjunction with the distance sensor, adaptively adjusts the extension length of each set of hydraulic rods to achieve stable support for long drill bits, suppress offset and resonance phenomena during high-speed rotating cutting, improve drilling effect, avoid drill bit offset and thus avoid problems such as excessive burrs on the workpiece, and meet the needs of users.

[0015] 2. This device uses an electromagnet to adjust the suction force at different stages of drilling. During the stable drilling stage, it enhances the constraint force and alleviates the problem of increased vibration. When the drill bit is about to penetrate, it flexibly adapts to the stress release vibration, preventing the vibration caused by stress release at the moment of workpiece penetration from being transmitted to the drill bit, which could lead to burrs or tears at the exit.

[0016] 3. This device achieves horizontal movement of the long drill bit by sliding the guide strip in the drilling component with the mounting base, combined with the movement of the movable base driven by the servo cylinder, thus improving the accuracy of the drilling position; the detachable connection structure of the main flange and the auxiliary flange allows for quick replacement of the drilling tool according to different drilling requirements, meeting the needs of users. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a side view of the automated guided vehicle of the present invention; Figure 3 This is a schematic diagram of the interior of the automated guided vehicle of the present invention; Figure 4 This is a schematic diagram of the drilling component of the present invention; Figure 5 This is a schematic diagram of the interior of the protective shell of the present invention; Figure 6 This is a schematic diagram of the sleeve of the present invention; Figure 7 This is a schematic diagram of the rotating shaft of the present invention; Figure 8 This is a schematic diagram of the internal support component of the present invention; Figure 9 This is a schematic diagram of the interior of the hydraulic cylinder of the present invention; Figure 10 This is a schematic diagram of the solenoid valve of the present invention.

[0018] In the diagram: 1. Automated Guided Vehicle (AGV); 12. Workbench; 13. Main Support Rod; 14. Secondary Support Rod; 15. Rotating Rod; 16. Connecting Strip; 17. Support Strip; 18. Push-Pull Cylinder; 19. Bellows-Type Protective Cover; 2. Drilling Part; 211. Guide Strip; 212. Mounting Base; 213. Protective Shell; 214. Moving Cylinder; 215. Servo Motor; 216. Sleeve; 217. Rotating Shaft; 218. Main Mechanism 219. Flange; 220. Drilling tool; 221. Accommodation cavity; 222. Movable seat; 223. Servo cylinder; 224. Bellows-style isolation cover; 22. Collar; 23. Inner support; 231. Hydraulic cylinder; 232. Hydraulic rod; 233. Electromagnet; 234. Battery pack; 235. Wire; 236. Oil supply pipe; 237. Oil supply component; 238. Solenoid valve; 239. Distance sensor. Detailed Implementation

[0019] 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.

[0020] This invention provides, for example Figure 1 The precision drilling equipment for the chassis of the engineering vehicle used for converting oil to electric high-voltage lines and its usage method are shown, including an automatic guide vehicle 1, a workbench 12, a drilling component 2, a collar 22 and an inner support component 23; The automated guided vehicle 1 is equipped with a control unit; a workbench 12 is mounted on the automated guided vehicle 1, and a lifting component is provided between the automated guided vehicle 1 and the workbench 12 to drive the workbench 12 to move vertically; a drilling component 2 is horizontally slidably connected to the inside of the workbench 12; a collar 22 is mounted on the drilling component 2; an inner support component 23 is fixedly mounted on the collar 22, and the inner support components 23 are arranged in a ring array. A distance sensor 239 is fixedly mounted at the end of the inner support component 23, and a hydraulic rod 232 is slidably connected inside the inner support component 23. The distance sensor 239 is used to detect the distance between the inner support component 23 and the inner wall of the frame, thereby adjusting the extension length of each set of hydraulic rods 232 to improve the stability of the inner support.

[0021] Example 1: In this example, before operation, the control unit presets drilling positions, depths, and other processing parameters. During operation, the control unit first controls the automated guided vehicle 1 to move to the preset processing position via the navigation system. After reaching the position, the servo cylinder 223 drives the movable seat 222 and the mounting seat 212 to slide along the guide bar 211, so that the drilling part 2 moves precisely to the pre-drilled hole position on the inner wall of the frame. Subsequently, the distance sensor 239 detects the relative distance between the inner support 23 and the inner wall of the frame and feeds back a signal. The control unit adjusts the opening of the solenoid valve 238 according to the signal, and the oil supply part 237 supplies oil to the hydraulic cylinder 231 to drive the hydraulic rod 232 to extend until the electromagnet 233 at the end of the hydraulic rod 232 abuts against the inner wall of the frame. Simultaneously, electromagnet 233 is activated to achieve initial positioning with moderate attraction. After positioning, servo motor 215 starts, driving rotary shaft 217 and drill bit 220 to rotate. Servo cylinder 223 continues to drive drill bit 220 to feed and drill. At the same time, moving cylinder 214 drives servo cylinder 223 to move, thereby moving drill bit 220. Spindle power sensor detects motor load power in real time. After determining that it has entered a stable drilling stage, it increases the attraction of electromagnet 233 and locks the pressure of hydraulic rod 232 to suppress vibration. When it is close to penetration, the attraction of electromagnet 233 is adjusted and hydraulic rod 232 enters a waiting state to avoid stress release vibration. After drilling is completed, each component resets in sequence, completing one drilling cycle.

[0022] This invention provides, for example Figures 2 to 3 The precision drilling equipment for the chassis of the engineering vehicle used for converting oil to electric high-voltage lines and its usage method are shown, including an automatic guide vehicle 1, a workbench 12, a drilling component 2, a collar 22 and an inner support component 23; The automated guided vehicle 1 is equipped with a control unit; a workbench 12 is mounted on the automated guided vehicle 1, and a lifting component is provided between the automated guided vehicle 1 and the workbench 12 to drive the workbench 12 to move vertically; a drilling component 2 is horizontally slidably connected to the inside of the workbench 12; a collar 22 is mounted on the drilling component 2; an inner support component 23 is fixedly mounted on the collar 22, and the inner support components 23 are arranged in a ring array. A distance sensor 239 is fixedly mounted at the end of the inner support component 23, and a hydraulic rod 232 is slidably connected inside the inner support component 23. The distance sensor 239 is used to detect the distance between the inner support component 23 and the inner wall of the frame, thereby adjusting the extension length of each set of hydraulic rods 232 to improve the stability of the inner support.

[0023] The lifting component includes a main support rod 13, a secondary support rod 14, and a rotating rod 15. A base is fixedly installed inside the automated guided vehicle 1, and one end of the main support rod 13 is rotatably connected to the base. The secondary support rod 14 is located on one side of the main support rod 13, and one end of the secondary support rod 14 is rotatably connected to the worktable 12. Rollers are provided on the other side of the main support rod 13 and the secondary support rod 14, and the rollers are rotatably connected to the worktable 12 and the automated guided vehicle 1, respectively. The rotating rod 15 is located inside the main support rod 13 and the secondary support rod 14. The lifting component also includes a connecting bar 16, a support bar 17, a push-pull cylinder 18, and a bellows-style protective cover 19; the connecting bar 16 is fixedly installed on one side of the main support rod 13; the support bar 17 is fixedly installed on one side of the auxiliary support rod 14; the push-pull cylinder 18 is rotatably connected to the support bar 17, and the output shaft of the push-pull cylinder 18 is rotatably connected to the connecting bar 16; one end of the bellows-style protective cover 19 is fixedly connected to the automatic guided vehicle 1, and the other end of the bellows-style protective cover 19 is fixedly connected to the worktable 12.

[0024] Example 2: In this example, the lifting component adopts a scissor-type lifting structure to achieve vertical lifting of the worktable 12, adapting to drilling requirements at different heights. Its core is driven by the extension and retraction of the push-pull cylinder 18, which in turn drives the support rod to open and close. Specifically, the cylinder body of the push-pull cylinder 18 is rotatably connected to the support bar 17 on the secondary support rod 14, and the output shaft is rotatably connected to the connecting bar 16 on the main support rod 13. When the push-pull cylinder 18 extends or retracts, it causes the main support rod 13 and the secondary support rod 14 to rotate relative to each other around the rotating rod 15 at the intersection. One end of the main support rod 13 is rotatably connected to the base of the automatic guide vehicle 1, and the other end slides in the groove of the worktable 12 via rollers. One end of the secondary support rod 14 is rotatably connected to the worktable 12, and the other end slides in the groove of the automatic guide vehicle 1 via rollers. Simultaneously, the accordion-style protective cover 19, fitted on the outside of the lifting component, extends and retracts synchronously with the lifting of the worktable 12 to prevent metal debris generated during drilling from entering the lifting structure, thus avoiding component jamming and meeting user needs.

[0025] This invention provides, for example Figures 4 to 10 The precision drilling equipment for the chassis of the engineering vehicle used for converting oil to electric high-voltage lines and its usage method are shown, including an automatic guide vehicle 1, a workbench 12, a drilling component 2, a collar 22 and an inner support component 23; The automated guided vehicle 1 is equipped with a control unit; a workbench 12 is mounted on the automated guided vehicle 1, and a lifting component is provided between the automated guided vehicle 1 and the workbench 12 to drive the workbench 12 to move vertically; a drilling component 2 is horizontally slidably connected to the inside of the workbench 12; a collar 22 is mounted on the drilling component 2; an inner support component 23 is fixedly mounted on the collar 22, and the inner support components 23 are arranged in a ring array. A distance sensor 239 is fixedly mounted at the end of the inner support component 23, and a hydraulic rod 232 is slidably connected inside the inner support component 23. The distance sensor 239 is used to detect the distance between the inner support component 23 and the inner wall of the frame, thereby adjusting the extension length of each set of hydraulic rods 232 to improve the stability of the inner support.

[0026] A guide bar 211 is fixedly installed on the workbench 12. A mounting base 212 is slidably connected to the guide bar 211. A protective shell 213 is fixedly installed on one side of the mounting base 212. A movable cylinder 214 is fixedly installed on one side of the protective shell 213.

[0027] Preferably, a servo motor 215 is installed inside the protective shell 213, and a spindle power sensor is installed inside the servo motor 215. A sleeve 216 is fixedly installed on one side of the mounting base 212, and a rotating shaft 217 is slidably connected inside the sleeve 216. The output shaft of the servo motor 215 is fixedly connected to the rotating shaft 217, and the output shaft of the moving cylinder 214 is fixedly assembled with the servo motor 215.

[0028] A main flange 218 is fixedly installed at the end of the rotating shaft 217. A secondary flange 219 is provided on one side of the main flange 218. The ends of the main flange 218 and the secondary flange 219 abut against each other. Locking bolts are provided inside the main flange 218 and the secondary flange 219. The locking bolts are distributed in a ring array. A drilling tool 220 is fixedly installed at the end of the secondary flange 219.

[0029] The workbench 12 has an internal cavity 221. A movable seat 222 is slidably connected inside the cavity 221. The movable seat 222 is fixedly installed with the mounting base 212. A servo cylinder 223 is fixedly installed on one side of the workbench 12. The output shaft of the servo cylinder 223 is fixedly installed with the movable seat 222. An accordion-style isolation cover 224 is fixedly installed inside the cavity 221. The other end of the accordion-style isolation cover 224 is fixedly installed with the movable seat 222.

[0030] The inner support component 23 includes a hydraulic cylinder 231, an electromagnet 233, a battery pack 234, and a wire 235; Hydraulic cylinder 231 is fixedly mounted on collar 22. Hydraulic rod 232 is slidably connected inside hydraulic cylinder 231. A piston is fixedly mounted at the end of hydraulic rod 232, and the end of the piston abuts against the inner wall of hydraulic cylinder 231. Distance sensor 239 is fixedly mounted at the end of hydraulic cylinder 231. A position sensor is fixedly mounted on hydraulic rod 232. The position sensor is used to detect the extension length of hydraulic rod 232. Electromagnet 233 is fixedly mounted at the end of hydraulic rod 232. A status sensor is fixedly mounted inside electromagnet 233. Battery pack 234 is fixedly mounted on one side of hydraulic cylinder 231. One end of wire 235 is fixedly connected to battery pack 234, and the other end of wire 235 is fixedly connected to electromagnet 233. Battery pack 234 is electrically connected to electromagnet 233 through wire 235.

[0031] The inner support component 23 also includes an oil pipe 236, an oil supply component 237, and a solenoid valve 238; The oil supply pipe 236 is fixedly installed on one side of the hydraulic cylinder 231 and is connected to the hydraulic cylinder 231; the oil supply component 237 is installed on the drilling component 2, and the other end of the oil supply pipe 236 is connected to the oil supply component 237; the solenoid valve 238 is installed at the connection between the oil supply pipe 236 and the oil supply component 237.

[0032] Includes the following steps; S1. The control unit controls the automatic guide vehicle 1 to move the lifting component to the preset processing position, and at the same time controls the servo cylinder 223 to drive the drilling component 2 to move to the pre-drilled hole position on the inner wall of the frame. S2. The distance sensor 239 detects and determines the relative position of the hydraulic rod 232 and the inner wall of the frame, controls the hydraulic rod 232 to extend until it abuts against the inner wall of the frame, and activates the electromagnet 233 to attract it to the inner wall of the frame with a moderate suction force to achieve initial positioning; S3. Start the servo motor 215 to drive the drill rod to rotate and extend, and drill the target position on the inner wall of the frame; when the control unit determines that the drill bit has entered the stable drilling stage, adjust the attraction force of the electromagnet 233 to the maximum, and lock the pressure of the hydraulic rod 232 to suppress vibration during the drilling process; S4. When the control unit determines that the drill bit is about to penetrate the inner wall of the frame, the attraction force of the electromagnet 233 is adjusted back to medium, and the hydraulic rod 232 is controlled to enter the ready-to-follow-retreat state to avoid the vibration caused by the release of workpiece stress at the moment of drill bit penetration being transmitted to the drill rod.

[0033] Example 3: In this example, the inner support members 23 are arranged in a circular array. A distance sensor 239 is fixedly installed at the end of each inner support member 23. The distance sensor 239 is a laser distance sensor. Hydraulic rods 232 are slidably connected inside the inner support members 23. The distance sensor 239 is used to detect the distance between the inner support member 23 and the inner wall of the frame, and transmits the detection signal to the control unit. The control unit adjusts the extension length of each set of hydraulic rods 232 according to the detection signal to ensure that each set of hydraulic rods 232 can tightly abut against the inner wall of the frame. To improve the stability of the internal support, a spindle power sensor is installed inside the servo motor 215. The spindle power sensor can detect the load power of the spindle of the servo motor 215 in real time, thereby determining the drilling status of the drill bit. The output shaft of the servo motor 215 is fixedly connected to the rotating shaft 217 through a coupling. The servo motor 215 can drive the rotating shaft 217 to rotate at high speed, thereby driving the drill bit 220 to rotate. It should be noted that the moving cylinder 214 is used to drive the drill bit 220 to move when drilling, so as to ensure the drilling effect.

[0034] A position sensor, which is a linear displacement sensor, is fixedly mounted on the hydraulic rod 232 to detect the extension length of the hydraulic rod 232 and transmit the detection signal to the control unit, so that the control unit can accurately control the extension amount of the hydraulic rod 232. An electromagnet 233 is fixedly mounted on the end of the hydraulic rod 232. A status sensor is fixedly mounted inside the electromagnet 233 to detect the attraction state of the electromagnet 233. A battery pack 234, which is a lithium battery, is fixedly mounted on one side of the hydraulic cylinder 231. The battery pack 234 supplies power to the electromagnet 233 through a wire 235. The inner support component 23 also includes an oil delivery system. The system includes a pipe 236, an oil supply component 237, and a solenoid valve 238. The oil supply pipe 236 is fixedly installed on one side of the hydraulic cylinder 231 and communicates with the interior of the hydraulic cylinder 231. The oil supply component 237 is installed on the drilling component 2 and uses a hydraulic pump. The other end of the oil supply pipe 236 communicates with the oil supply component 237. The solenoid valve 238 is located at the connection between the oil supply pipe 236 and the oil supply component 237. The solenoid valve 238 is electrically connected to the control unit. The control unit can control the amount of oil entering the hydraulic cylinder 231 by controlling the on / off state and opening degree of the solenoid valve 238, thereby controlling the extension speed and extension amount of the hydraulic rod 232.

[0035] Finally, it should be noted that the above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A precision drilling device for the chassis of engineering vehicles used for laying high-voltage lines after converting fuel to electric power, characterized in that: include: An automated guided vehicle (1) is provided with a control unit inside the automated guided vehicle (1); A workbench (12) is set on an automated guided vehicle (1). A lifting component is provided between the automated guided vehicle (1) and the workbench (12). The lifting component is used to drive the workbench (12) to move vertically. The drilling component (2) is horizontally slidably connected inside the worktable (12); A collar (22) is provided on the drilled part (2); An inner support member (23) is fixedly installed on a collar (22). The inner support members (23) are arranged in a ring array. A distance sensor (239) is fixedly installed at the end of the inner support member (23). A hydraulic rod (232) is slidably connected inside the inner support member (23). The distance sensor (239) is used to detect the distance between the inner support member (23) and the inner wall of the frame, thereby adjusting the extension length of each set of hydraulic rods (232) to improve the stability of the inner support.

2. The precision drilling equipment for the chassis of engineering vehicles used for converting oil-to-electric high-voltage lines according to claim 1, characterized in that, The lifting component includes a main support rod (13), a secondary support rod (14), and a rotating rod (15): The main support rod (13) has a base fixedly installed inside the automatic guide vehicle (1), and one end of the main support rod (13) is rotatably connected to the base; A secondary support rod (14) is set on one side of the main support rod (13). One end of the secondary support rod (14) is rotatably connected to the workbench (12). Rollers are provided on the other side of the main support rod (13) and the secondary support rod (14). The rollers are rotatably connected to the inside of the workbench (12) and the automatic guide vehicle (1), respectively. The rotating rod (15) is located inside the main support rod (13) and the secondary support rod (14).

3. The precision drilling equipment for the chassis of engineering vehicles used for converting oil-to-electric high-voltage lines according to claim 2, characterized in that, The lifting component also includes a connecting bar (16), a support bar (17), a push-pull cylinder (18), and a bellows-style protective cover (19). The connecting strip (16) is fixedly installed on one side of the main support rod (13); The support bar (17) is fixedly installed on one side of the auxiliary support rod (14); A push-pull cylinder (18) is rotatably connected to a support bar (17), and the output shaft of the push-pull cylinder (18) is rotatably connected to a connecting bar (16); The bellows-style protective cover (19) is fixedly connected at one end to the automatic guided vehicle (1), and the other end of the bellows-style protective cover (19) is fixedly connected to the workbench (12).

4. The precision drilling equipment for the chassis of engineering vehicles used for converting oil-to-electric high-voltage lines according to claim 1, characterized in that, A guide bar (211) is fixedly installed on the workbench (12), and a mounting base (212) is slidably connected on the guide bar (211). A protective shell (213) is fixedly installed on one side of the mounting base (212), and a movable cylinder (214) is fixedly installed on one side of the protective shell (213).

5. The precision drilling equipment for the chassis of engineering vehicles used for converting oil-to-electric high-voltage lines according to claim 4, characterized in that, The protective shell (213) is equipped with a servo motor (215), and a spindle power sensor is installed inside the servo motor (215). A sleeve (216) is fixedly installed on one side of the mounting base (212). A rotating shaft (217) is slidably connected inside the sleeve (216). The output shaft of the servo motor (215) is fixedly connected to the rotating shaft (217). The output shaft of the moving cylinder (214) is fixedly assembled with the servo motor (215).

6. The precision drilling equipment for the chassis of engineering vehicles used for converting oil-to-electric high-voltage lines according to claim 5, characterized in that, A main flange (218) is fixedly installed at the end of the rotating shaft (217). A secondary flange (219) is provided on one side of the main flange (218). The ends of the main flange (218) and the secondary flange (219) abut against each other. Locking bolts are provided inside the main flange (218) and the secondary flange (219). The locking bolts are distributed in a ring array. A drilling tool (220) is fixedly installed at the end of the secondary flange (219).

7. The precision drilling equipment for the chassis of engineering vehicles used for converting oil-to-electric high-voltage lines according to claim 1, characterized in that, The workbench (12) has an internal cavity (221). A movable seat (222) is slidably connected inside the cavity (221). The movable seat (222) is fixedly installed with the mounting base (212). A servo cylinder (223) is fixedly installed on one side of the workbench (12). The output shaft of the servo cylinder (223) is fixedly installed with the movable seat (222). An accordion-style isolation cover (224) is fixedly installed inside the cavity (221). The other end of the accordion-style isolation cover (224) is fixedly installed with the movable seat (222).

8. The precision drilling equipment for the chassis of engineering vehicles used for converting oil-to-electric high-voltage lines according to claim 1, characterized in that, The inner support (23) includes a hydraulic cylinder (231), an electromagnet (233), a battery pack (234), and a wire (235): A hydraulic cylinder (231) is fixedly mounted on a collar (22). A hydraulic rod (232) is slidably connected inside the hydraulic cylinder (231). A piston is fixedly mounted at the end of the hydraulic rod (232). The end of the piston abuts against the inner wall of the hydraulic cylinder (231). A distance sensor (239) is fixedly mounted at the end of the hydraulic cylinder (231). A position sensor is fixedly mounted on the hydraulic rod (232). The position sensor is used to detect the extension length of the hydraulic rod (232). An electromagnet (233) is fixedly installed at the end of a hydraulic rod (232), and a status sensor is fixedly installed inside the electromagnet (233); The battery pack (234) is fixedly installed on one side of the hydraulic cylinder (231); One end of the wire (235) is fixedly connected to the battery pack (234), and the other end of the wire (235) is fixedly connected to the electromagnet (233). The battery pack (234) is electrically connected to the electromagnet (233) through the wire (235).

9. The precision drilling equipment for the chassis of engineering vehicles used for laying high-voltage lines after converting oil to electricity, as described in claim 8, is characterized in that... The inner support (23) also includes an oil pipe (236), an oil supply component (237), and a solenoid valve (238): An oil supply pipe (236) is fixedly installed on one side of a hydraulic cylinder (231), and the oil supply pipe (236) is connected to the hydraulic cylinder (231); An oil supply component (237) is installed on the drilling component (2), and the other end of the oil delivery pipe (236) is connected to the oil supply component (237); Solenoid valve (238) is located at the connection between oil supply pipe (236) and oil supply component (237).

10. A method for precise drilling of vehicle frames for laying high-voltage lines in engineering vehicles converted from gasoline to electric power, based on the precise drilling equipment for laying high-voltage lines in engineering vehicles converted from gasoline to electric power as described in any one of claims 1-9, characterized in that... Includes the following steps: S1. The control unit controls the automatic guide vehicle (1) to move the lifting component to the preset processing position, and at the same time controls the servo cylinder (223) to drive the drilling component (2) to move to the pre-drilled hole position on the inner wall of the frame; S2. The relative position of the hydraulic rod (232) and the inner wall of the frame is detected and determined by the distance sensor (239). The hydraulic rod (232) is controlled to extend to abut against the inner wall of the frame. The electromagnet (233) is activated and attracted to the inner wall of the frame with a moderate suction force to achieve initial positioning. S3. Start the servo motor (215) to drive the drill rod to rotate and extend, and drill the target position on the inner wall of the frame; when the control unit determines that the drill bit has entered the stable drilling stage, adjust the attraction of the electromagnet (233) to the maximum, and lock the pressure of the hydraulic rod (232) to suppress the vibration during the drilling process; S4. When the control unit determines that the drill bit is about to penetrate the inner wall of the frame, the attraction force of the electromagnet (233) is adjusted back to medium, and the hydraulic rod (232) is controlled to enter the waiting follow-up retraction state to avoid the vibration caused by the release of workpiece stress at the moment of drill bit penetration being transmitted to the drill rod.

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