Numerical control floor boring vertical shaft safety application mechanism

Abstract

The application discloses a vertical shaft safety application mechanism of numerical control floor boring, and relates to the technical field of floor boring. The vertical shaft safety application mechanism comprises a frame, a vertical shaft is arranged in the frame, a main shaft box is slidably connected to the outer wall of the vertical shaft, a speed limiting assembly is arranged on the main shaft box, a limiting assembly is arranged at the top and bottom of the vertical shaft, the speed limiting assembly comprises a No.2 moving frame, and the bottom of the No.2 moving frame is slidably connected to the bottom of the inside of the main shaft box. In the process of overspeed movement of the main shaft box, the contact wheel is rotated, liquid continuously enters the tank body through transmission, the hydraulic pressure in the tank body rises, the extrusion rod moves and contacts the friction plate, the friction between the extrusion rod and the friction plate is increased, the main shaft box is affected by the friction, the main shaft box is decelerated, the impact on the main shaft box is reduced, and the damage to the main shaft box and important parts is reduced.

Description

Technical Field

[0001] This invention relates to the field of floor-type boring machine technology, specifically to a safety application mechanism for the vertical axis of a CNC floor-type boring machine. Background Technology

[0002] In the structure of a CNC floor-type milling and boring machine, when the Y-axis is driven, the main moving unit—the spindle box—moves up and down along the vertical axis and guide rails. If a special situation such as motor shaft breakage occurs during the operation of the spindle box, an electromagnetic brake in the next stage of the Y-axis transmission chain can lock the rotating shaft to prevent the spindle box from falling and avoid personal injury and damage to important components.

[0003] As disclosed in CN114178855A, a "fall prevention braking mechanism" includes a fixed block and a guide rail. The fixed block is fixed to the spindle box, the guide rail is fixed to the column, and a support structure is fixedly connected to the bottom of the fixed block. Compared with the original Y-axis braking structure of CNC floor-type milling and boring machines, the original structure can effectively brake the spindle box from falling due to motor shaft breakage, but it cannot effectively brake the transmission chain after the electromagnetic brake, which has certain limitations. This fall prevention braking mechanism, however, has no connection with the Y-axis transmission chain; it only locks the spindle box moving along the Y-axis, providing a physical locking mechanism with higher reliability.

[0004] The aforementioned mechanism locks the spindle box for Y-axis movement. When the spindle box falls, locking it causes it to stop moving for a short time, which will have a significant impact on the spindle box and damage it and other important components. To address this, a safety application mechanism for the vertical axis of a CNC floor-type boring machine has been invented. Summary of the Invention

[0005] The purpose of this invention is to provide a safety application mechanism for the vertical axis of a CNC floor-type boring machine, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a safety application mechanism for the vertical axis of a CNC floor-type boring machine, comprising a frame, a vertical axis installed inside the frame, a spindle box slidably connected to the outer wall of the vertical axis, a speed limiting component installed on the spindle box, and limit components installed at the top and bottom ends of the vertical axis respectively; The speed limiting component includes a second moving frame, the bottom of which is slidably connected to the bottom of the main spindle box. A moving component is installed between the second moving frame and the main spindle box. A contact wheel is rotatably connected inside the second moving frame, and a crank is fixedly connected to one end of the contact wheel. A cylinder is fixedly connected to the inner wall of the main spindle box. A piston is slidably connected to the inner wall of the cylinder. A connecting rod is rotatably connected to one side of the piston. One end of the connecting rod is rotatably connected to the outer wall of the crank. A storage box is fixedly connected to the feed end of the cylinder. An extrusion component is installed at the discharge end of the cylinder. One-way valves are installed at both the feed end and the discharge end of the cylinder.

[0007] Furthermore, the limiting component includes a lever, one side of which is rotatably connected to the bottom end inside the frame, a first moving block is slidably connected to the bottom end inside the frame, a first spring damper is fixedly connected between the first moving block and the frame, a disc is slidably connected to the outer wall of the vertical shaft, a second moving block is fixedly connected to the bottom end of the disc, one side of the first moving block is movably connected to one end of the lever, and one side of the second moving block is movably connected to the other end of the lever.

[0008] Furthermore, the limiting assembly includes a moving ring, the inner wall of which is slidably connected to the outer wall of the vertical shaft. A bracket is fixedly connected to the top of the disc, and a second spring damper is rotatably connected to the top of the bracket. A rotating rod is fixedly connected to one end of the bracket, and the bottom end of the rotating rod is rotatably connected to the telescopic end of the second spring damper. A contact block for contacting the top of the rotating rod is fixedly connected to the bottom of the moving ring. A third spring damper is installed between the moving ring and the disc. A friction element is fixedly connected to the inner wall of the frame, and a first moving frame is slidably connected to one side of the friction element. A contact friction block is slidably connected inside the first moving frame, and one end of the rotating rod is slidably connected to one side of the contact friction block.

[0009] Furthermore, the extrusion assembly includes a tank body, which is fixedly installed inside the spindle box. A second piston component is slidably connected inside the tank body. An extrusion rod is fixedly connected to one side of the second piston component. A friction plate component is fixedly connected inside the frame. A pressure regulating assembly is installed between the discharge end of the tank body and the storage box.

[0010] Furthermore, the pressure regulating assembly includes a placement frame, which is fixedly installed on the discharge end of the tank. The inner wall of the placement frame is threaded with a pressure regulating bolt, and the bottom end of the pressure regulating bolt is rotatably connected to a movable plate. The bottom end of the movable plate is fixedly connected to a first spring, and the bottom end of the first spring is fixedly connected to a pressing plate. The outer wall of the movable plate and the inner wall of the placement frame are slidably connected. The discharge end of the tank and the inlet end of the storage box are fixed together.

[0011] Furthermore, the moving component includes a hydraulic telescopic component, which is fixedly mounted on the main spindle box, and the telescopic end of the hydraulic telescopic component is fixed to one end of the second moving frame.

[0012] Compared with the prior art, the beneficial effects of the present invention are: The safety application mechanism of the vertical axis of this CNC floor boring machine, through the setting of the speed limiting component, causes the contact wheel to rotate during the overspeed movement of the spindle box. Through transmission, liquid continuously enters the tank, the hydraulic pressure inside the tank rises, the extrusion rod moves and contacts the friction plate, increasing the friction between the extrusion rod and the friction plate. The spindle box is affected by the friction, thereby slowing down the spindle box, reducing the impact on the spindle box, and also reducing the damage to the spindle box and important components.

[0013] Meanwhile, by setting limit components, limit components are installed at the top and bottom of the vertical shaft respectively. During the stalling process of the spindle box, the speed limiting component slows down the speed of the spindle box. The limit components further protect the spindle box and prevent direct contact between the spindle box and the frame. When the spindle box and the speed limiting component come into contact, the friction component and the contact friction block come into contact through the transmission, generating friction. Through the lever, the force of the No. 1 spring damper is amplified, thereby slowing down the movement speed of the spindle box and further reducing the damage to the spindle box and important components. Attached Figure Description

[0014] Figure 1 This is an isometric drawing of the present invention; Figure 2 This is a front view of the limiting component of the present invention; Figure 3 This is a partial cross-sectional view of the limiting component of the present invention; Figure 4 This is an isometric view of the interior of the spindle box of the present invention; Figure 5 This is an isometric view of the speed limiting component of the present invention; Figure 6 This is a cross-sectional view of the speed limiting component and the extrusion component of the present invention; Figure 7 This is a cross-sectional view of the voltage regulating component of the present invention.

[0015] In the diagram: 1. Frame; 2. Vertical shaft; 3. Spindle box; 4. Speed ​​limiting assembly; 401. Second moving frame; 402. Contact wheel; 403. Crank; 404. Cylinder; 405. First piston; 406. Connecting rod; 407. Storage box; 5. Limiting assembly; 501. Lever; 502. First moving block; 503. First spring damper; 504. Disc; 505. Second moving block; 506. Moving ring; 507. Bracket; 508 509. No. 2 spring damper; 510. Rotating rod; 511. Friction component; 512. No. 1 moving frame; 513. Contact friction block; 514. No. 3 spring damper; 6. Moving assembly; 7. Extrusion assembly; 705. Tank body; 706. No. 2 piston component; 707. Extrusion rod; 708. Friction plate component; 809. Pressure regulating assembly; 8001. Placement frame; 8002. Pressure regulating bolt; 8003. Moving plate; 8004. First spring; 8005. Extrusion plate. Detailed Implementation

[0016] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0017] The floor boring machine moves the spindle box 3 on the vertical axis 2 through an internal power unit. To ensure the movement of the spindle box 3, a safety application mechanism is designed to protect the spindle box 3 when it stalls. The speed limiting component 4 is used to limit the speed of the spindle box 3, while the limiting component 5 is used to reduce the impact force generated between the spindle box 3 and the frame 1.

[0018] like Figure 1 - Figure 7 As shown, the present invention provides a technical solution: a safety application mechanism for the vertical axis of a CNC floor boring machine, including a frame 1, a vertical axis 2 installed inside the frame 1, a spindle box 3 slidably connected to the outer wall of the vertical axis 2, a speed limiting component 4 installed on the spindle box 3, and limit components 5 installed at the top and bottom of the vertical axis 2 respectively; The speed limiting component 4 includes a second moving frame 401, the bottom end of which is slidably connected to the bottom end inside the main shaft box 3. A moving component 6 is installed between the second moving frame 401 and the main shaft box 3. A contact wheel 402 is rotatably connected inside the second moving frame 401. A crank 403 is fixedly connected to one end of the contact wheel 402. A cylinder 404 is fixedly connected to the inner wall of the main shaft box 3. A first piston 405 is slidably connected to the inner wall of the cylinder 404. A connecting rod 406 is rotatably connected to one side of the first piston 405. One end of the connecting rod 406 is rotatably connected to the outer wall of the crank 403. A storage box 407 is fixedly connected to the feed end of the cylinder 404. An extrusion component 7 is installed at the discharge end of the cylinder 404. One-way valves are installed at the feed end and discharge end of the cylinder 404, respectively.

[0019] The limiting component 5 includes a lever 501, one side of which is rotatably connected to the bottom of the frame 1. A first moving block 502 is slidably connected to the bottom of the frame 1. A first spring damping device 503 is fixedly connected between the first moving block 502 and the frame 1. A disc 504 is slidably connected to the outer wall of the vertical shaft 2. A second moving block 505 is fixedly connected to the bottom of the disc 504. One side of the first moving block 502 is movably connected to one end of the lever 501, and one side of the second moving block 505 is movably connected to the other end of the lever 501.

[0020] The limiting component 5 includes a moving ring 506, the inner wall of which is slidably connected to the outer wall of the vertical shaft 2. A bracket 507 is fixedly connected to the top of the disc 504. A second spring damper 508 is rotatably connected to the top of the bracket 507. A rotating rod 509 is fixedly connected to one end of the bracket 507. The bottom end of the rotating rod 509 is rotatably connected to the telescopic end of the second spring damper 508. A contact block for contacting the top of the rotating rod 509 is fixedly connected to the bottom of the moving ring 506. A third spring damper 513 is installed between the moving ring 506 and the disc 504. A friction element 510 is fixedly connected to the inner wall of the frame 1. A first moving frame 511 is slidably connected to one side of the friction element 510. A contact friction block 512 is slidably connected inside the first moving frame 511. One end of the rotating rod 509 is slidably connected to one side of the contact friction block 512.

[0021] The extrusion assembly 7 includes a tank 701, which is fixedly installed inside the spindle box 3. A second piston 702 is slidably connected inside the tank 701. An extrusion rod 703 is fixedly connected to one side of the second piston 702. A friction plate 704 is fixedly connected inside the frame 1. A pressure regulating assembly 8 is installed between the discharge end of the tank 701 and the storage box 407.

[0022] The pressure regulating assembly 8 includes a placement frame 801, which is fixedly installed on the discharge end of the tank 701. The inner wall of the placement frame 801 is threaded with a pressure regulating bolt 802. The bottom end of the pressure regulating bolt 802 is rotatably connected to a moving plate 803. The bottom end of the moving plate 803 is fixedly connected to a first spring 804. The bottom end of the first spring 804 is fixedly connected to a pressing plate 805. The outer wall of the moving plate 803 and the inner wall of the placement frame 801 are slidably connected. The discharge end of the tank 701 and the inlet end of the storage box 407 are fixedly connected.

[0023] The moving component 6 includes a hydraulic telescopic component, which is fixedly installed on the spindle box 3. The telescopic end of the hydraulic telescopic component is fixed to one end of the second moving frame 401.

[0024] When the spindle box 3 stalls, the moving component 6 causes the second moving frame 401 to move, thereby causing the contact wheel 402 to contact the vertical shaft 2. The cylinder 404 is fixedly installed on the second moving frame 401. The discharge end of the cylinder 404 and the tank 701 can be connected by a hose. At the same time, the tank 701 is fixedly installed on the spindle box 3. The contact wheel 402 and the vertical shaft 2 contact under the action of the moving component 6. Due to the friction between the contact wheel 402 and the vertical shaft 2, the contact wheel 402 rotates during the movement. A gearbox is installed between the contact wheel 402 and the crank 403. The gearbox can change the transmission ratio between the power input end and the power output end of the gearbox. The speed of the crank 403 is increased by the gearbox. The connecting rod 406 is affected by the rotation of the crank 403. Due to the rotation of the crank 403, the first piston 405 moves back and forth. Due to the presence of the one-way valve, the liquid inside the storage tank 407 enters the cylinder 404 and is discharged through the cylinder. As cylinder 404 moves into tank 701, the increase in liquid inside tank 701 causes piston 702 and extrusion rod 703 to move, bringing friction plate and extrusion rod 703 into contact. Simultaneously, the increased hydraulic pressure inside tank 701 increases the friction between friction plate and extrusion rod 703. When the hydraulic pressure inside tank 701 exceeds the set pressure of pressure regulating component 8, the liquid inside tank 701 can return to storage tank 407 via pressure regulating component 8. Through the speed limiting component 4, during the overspeed movement of spindle box 3, contact wheel 402 rotates, allowing liquid to continuously enter tank 701 via transmission. The hydraulic pressure inside tank 701 rises, causing extrusion rod 703 to move and contact friction plate 704, increasing friction between them. The spindle box 3 is affected by this friction, thus slowing it down, reducing impact on spindle box 3, and minimizing damage to spindle box 3 and other critical components.

[0025] The pressure adjusting bolt 802 rotates and moves, the moving plate 803 moves, and the first spring 804 is squeezed, thereby adjusting the pressure between the first spring 804 and the extrusion plate 805. Since the extrusion plate 805 blocks the discharge end of the tank 701, when the hydraulic pressure inside the tank 701 is greater than the pressure between the first spring 804 and the extrusion plate 805, the liquid inside the tank 701 can create a gap between the extrusion plate 805 and the discharge end of the tank 701, and then move into the storage tank.

[0026] Limiting components 5 are installed at the top and bottom of the vertical shaft 2 respectively. The limiting components 5 can prevent the spindle box 3 and the frame 1 from contacting each other in the direction of movement during the movement of the spindle box 3. At the same time, the presence of the limiting components 5 can reduce the impact between the spindle box 3 and the frame 1 when the spindle box 3 stalls, and reduce the damage caused by the spindle box 3 to the frame 1 and its own internal structure.

[0027] When the spindle box 3 stalls, it will not only fall, but the structural design of the power unit will also cause the spindle box 3 to move upward. Therefore, the limiting components 5 need to be designed at the top and bottom of the vertical shaft 2 respectively. During the movement, the spindle box 3 will come into contact with the limiting components 5. When the spindle box 3 moves to the top and bottom of the vertical shaft 2, the spindle box 3 will come into contact with the moving ring 506. The distance between the moving ring 506 and the disc 504 will become closer, and the third spring damper 513 will be squeezed. The contact block will come into contact with the rotating rod 509 and squeeze the rotating rod 509, causing the rotating rod 509 to rotate. The two ends of the second spring damper 508 will become shorter. The contact friction block 512 located at one end of the rotating rod 509 will move towards the friction plate under the influence of the rotation of the rotating rod 509. The contact friction block 512 will come into contact with the friction plate, thereby slowing down the movement speed of the moving ring 506.

[0028] The compression of the third spring damper 513 also causes the disc 504 to tend to move. The second moving block 505 moves downward. Due to the presence of the lever 501, the lever 501 rotates. The lever 501 applies a force to the first moving block 502, causing the first moving block 502 to move. The first spring damper 503 is compressed. Through the reaction force of the first spring damper 503, the downward trend of the disc 504 is reduced.

[0029] Due to the presence of lever 501, both sides of lever 501 follow the principle of lever 501, that is, the effort multiplied by the effort arm equals the resistance multiplied by the resistance arm. When the second moving block 505 descends, the first moving block 502 moves. Through lever 501, the effort arm of the second moving block 505 relative to lever 501 is less than the effort arm of the first moving block 502 relative to lever 501. Consequently, when the first moving block 502 compresses the first spring damper 503, the movement distance of the first moving block 502 will be greater than the movement distance of the second moving block 505. This reduces the movement distance between the first moving block 502 and the disc 504, thus ensuring that after the spindle box 3 contacts the moving ring 506, the limiting component 5 reduces... The speed of the spindle box 3 is slowed down by setting the limiting components 5. The limiting components 5 are installed at the top and bottom of the vertical shaft 2 respectively. During the stalling process of the spindle box 3, the speed limiting component 4 slows down the speed of the spindle box 3. The limiting components 5 further protect the spindle box 3 and prevent the spindle box 3 from directly contacting the frame 1. When the spindle box 3 and the speed limiting component 4 come into contact, the contact friction block 512 moves on the first moving frame 511 through the transmission. The friction element 510 contacts the contact friction block 512 and generates friction. Through the lever 501, the force of the first spring damper 503 is amplified, thereby slowing down the speed of the spindle box 3 and further reducing the damage to the spindle box 3 and important components.

[0030] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended embodiments and their equivalents.

Claims

1. A safety application mechanism for the vertical axis of a CNC floor-type boring machine, comprising a frame (1), characterized in that: A vertical shaft (2) is installed inside the frame (1), and a spindle box (3) is slidably connected to the outer wall of the vertical shaft (2). A speed limiting component (4) is installed on the spindle box (3), and a limit component (5) is installed at the top and bottom of the vertical shaft (2). The speed limiting component (4) includes a second movable frame (401), the bottom end of which is slidably connected to the bottom end inside the spindle box (3). A movable component (6) is installed between the second movable frame (401) and the spindle box (3). A contact wheel (402) is rotatably connected inside the second movable frame (401). A crank (403) is fixedly connected to one end of the contact wheel (402). A cylinder (404) is fixedly connected to the inner wall of the spindle box (3). The inner wall of the cylinder (404) is slidably connected to a piston (405), and a connecting rod (406) is rotatably connected to one side of the piston (405). One end of the connecting rod (406) is rotatably connected to the outer wall of the crank (403). A storage box (407) is fixedly connected to the feed end of the cylinder (404). An extrusion assembly (7) is installed at the discharge end of the cylinder (404). A one-way valve is installed at the feed end and the discharge end of the cylinder (404). The limiting component (5) includes a lever (501), one side of the lever (501) is rotatably connected to the bottom of the frame (1), the bottom of the frame (1) is slidably connected to a first moving block (502), a first spring damping device (503) is fixedly connected between the first moving block (502) and the frame (1), a disc (504) is slidably connected to the outer wall of the vertical shaft (2), the bottom of the disc (504) is fixedly connected to a second moving block (505), one side of the first moving block (502) is movably connected to one end of the lever (501), and one side of the second moving block (505) is movably connected to the other end of the lever (501). The limiting component (5) includes a movable ring (506), the inner wall of which is slidably connected to the outer wall of the vertical shaft (2). A bracket (507) is fixedly connected to the top of the disc (504). A second spring damper (508) is rotatably connected to the top of the bracket (507). A rotating rod (509) is fixedly connected to one end of the bracket (507). The bottom end of the rotating rod (509) is rotatably connected to the telescopic end of the second spring damper (508). The bottom end of the movable ring (506) is fixedly connected to the outer wall of the vertical shaft (2). A contact block is fixedly connected to the top of the rotating rod (509). A third spring damper (513) is installed between the moving ring (506) and the disc (504). A friction element (510) is fixedly connected to the inner wall of the frame (1). A first moving frame (511) is slidably connected to one side of the friction element (510). A contact friction block (512) is slidably connected inside the first moving frame (511). One end of the rotating rod (509) is slidably connected to one side of the contact friction block (512). The extrusion assembly (7) includes a tank (701), which is fixedly installed inside the spindle box (3). A second piston (702) is slidably connected inside the tank (701). An extrusion rod (703) is fixedly connected to one side of the second piston (702). A friction plate (704) is fixedly connected inside the frame (1). A pressure regulating assembly (8) is installed between the discharge end of the tank (701) and the storage box (407).

2. The safety application mechanism for the vertical axis of a CNC floor-type boring machine according to claim 1, characterized in that: The pressure regulating assembly (8) includes a placement rack (801), which is fixedly installed on the discharge end of the tank (701). The inner wall of the placement rack (801) is threaded with a pressure regulating bolt (802). The bottom end of the pressure regulating bolt (802) is rotatably connected to a moving plate (803). The bottom end of the moving plate (803) is fixedly connected to a first spring (804). The bottom end of the first spring (804) is fixedly connected to a pressing plate (805). The outer wall of the moving plate (803) and the inner wall of the placement rack (801) are slidably connected. The discharge end of the tank (701) and the inlet end of the storage box (407) are fixedly connected.

3. The safety application mechanism for the vertical axis of a CNC floor-type boring machine according to claim 1, characterized in that: The moving component (6) includes a hydraulic telescopic component, which is fixedly installed on the spindle box (3). The telescopic end of the hydraulic telescopic component is fixed to one end of the second moving frame (401).

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