Arbitrary stop rotating shaft

Abstract

The utility model discloses a kind of arbitrary stop pivot, it is related to pivot braking technical field, including mounting bracket, protective box is fixedly installed on mounting bracket, pivot is rotatably installed in protective box, the left end of protective box is fixedly installed with motor for driving pivot, and the inside of protective box is provided with emergency stop component and locking assembly;When sending emergency stop signal, so that electromagnet is electrified, electromagnet after electrification immediately adsorbs to magnetic plate, and pivot is braked;Brake by electromagnet adsorption, the response speed of whole braking process is fast, and the multiple independent brake units of annular distribution, so that single point failure also cannot too much affect the braking effect of whole;At the same time, after emergency stop component brake, make that plug rod is inserted into pressure block by hydraulic drive, and electromagnet is immediately powered off after hydraulic locking, i.

Description

Technical Field

[0001] This utility model relates to the field of rotating shaft braking technology, specifically to a rotating shaft that can be stopped arbitrarily. Background Technology

[0002] As modern manufacturing demands ever higher levels of geometric complexity, precision, and efficiency from parts, the widespread application of multi-axis linkage machining, composite machining, and flexible manufacturing systems has emerged. On these advanced machine tools, axes (such as spindles, rotary table axes, tilting head axes, and milling head axes) are no longer merely for continuous rotation to provide cutting power or simple indexing; they need to be able to stop and lock at any point during the machining cycle for easy adjustment.

[0003] In traditional rotary shaft braking mechanisms, a piston driven by an oil pump clamps the brake pads onto the rotary shaft, thereby achieving braking. However, the oil pump-driven braking mechanism requires a series of actions, such as energizing → switching the solenoid valve → supplying oil to the pump → delivering oil through the pipeline → moving the cylinder piston → pushing the brake pads → braking the rotary shaft. The braking process takes a long time and cannot provide immediate braking, failing to meet the required braking time. Therefore, this solution provides a method to arbitrarily stop the rotary shaft, thus addressing the aforementioned problems. Utility Model Content

[0004] To solve the above-mentioned technical problems, this technical solution provides a rotating shaft that can be stopped arbitrarily, thus resolving the issues raised in the background section.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A rotatable stop shaft includes a mounting frame, a protective box fixedly mounted on the mounting frame, a shaft rotatably mounted inside the protective box, a motor for driving the shaft fixedly mounted on the left end of the protective box, and an emergency stop assembly and a locking assembly inside the protective box. The emergency stop assembly includes a fixed frame fixedly connected to the inner wall of the protective box, an annular box sleeved on the shaft fixedly connected to the fixed frame, a plurality of braking parts slidably mounted inside the annular box, the plurality of braking parts being evenly arranged in a ring about the central axis of the annular box, an annular plate fixedly connected to the inner side wall of the annular box, and a plurality of electromagnets for driving the braking parts fixedly mounted on the annular plate.

[0007] Preferably, the braking unit includes two sets of slide rods slidably connected to the inner end of the annular box. The ends of the two sets of slide rods near the rotating shaft pass through the annular box and are fixedly connected to a pressure block. The end of the pressure block near the rotating shaft is arc-shaped, and the arc-shaped end of the pressure block is in contact with the surface of the rotating shaft. The other end of the slide rod is fixedly connected to a top plate. A magnetic plate for cooperating with an electromagnet is fixedly connected to the top plate. Both ends of the top plate and the annular box are fixedly connected to a return spring sleeved on the slide rod.

[0008] Preferably, the two ends of the pressing block are respectively provided with a semi-circular groove one and a semi-circular groove two, and the diameters of the semi-circular groove one and the semi-circular groove two are the same.

[0009] Preferably, the return spring is made of austenitic stainless steel.

[0010] Preferably, the locking assembly includes a connecting frame fixedly connected to the protective box, and a mounting box sleeved on the rotating shaft is fixedly connected between the connecting frames. Limiting frames are fixedly connected to the inner walls of both the left and right sides of the mounting box. A piston is slidably connected inside the mounting box. Several sets of piston rods are fixedly connected to the end of the piston near the emergency stop assembly. The right end of each piston rod passes through the mounting box and is fixedly connected to a circular plate. Several sets of insert rods are fixedly installed on the circular plate.

[0011] Preferably, a drive oil pipe and a reset oil pipe are fixedly installed at the lower end of the mounting box, and an oil outlet pipe one and an oil outlet pipe two are fixedly installed at the upper end of the mounting box. Solenoid valves are fixedly installed on the surfaces of the drive oil pipe, the reset oil pipe, the oil outlet pipe one, and the oil outlet pipe two.

[0012] Compared with the prior art, this utility model proposes an arbitrary stopping shaft, which has the following beneficial effects:

[0013] This invention includes an emergency stop component and a locking component. When an emergency stop signal is issued, the electromagnet is energized. The energized electromagnet immediately attracts the magnetic plate. Once attracted, the magnetic plate moves the top plate downward, which in turn moves the slide rod radially forward, causing the pressure block to lock the rotating shaft and thus braking the shaft. Braking is achieved by the energized electromagnet attracting the magnetic plate. The braking process has a fast response speed, and the multiple independent braking units evenly distributed in a ring ensure that a single point failure will not significantly affect the overall braking effect.

[0014] After emergency braking, oil is supplied to the drive oil pipe and discharged through the outlet pipe, causing the piston to move to the left. This, in turn, drives the circular plate via the piston rod, which in turn moves the insert rod. The insert rod then inserts into the limiting groove formed by the semicircular groove one in the pressure block and the semicircular groove two in the adjacent pressure block, thus fixing the position of the pressure block and mechanically locking the shaft. After braking, hydraulic drive causes the insert rod to insert into the pressure block. At this point, the electromagnet is immediately de-energized after hydraulic locking, meaning the pressure block is mechanically limited only by the insert rod. This eliminates the risk of continuous heating of the electromagnetic coil and avoids the danger caused by overheating due to prolonged electromagnetic drive. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the emergency stop component in this utility model;

[0017] Figure 3 This is a cross-sectional view of the emergency stop component in this utility model;

[0018] Figure 4 This is a schematic diagram of the pressure block in the emergency stop assembly of this utility model;

[0019] Figure 5 This is a schematic diagram of the locking component in this utility model;

[0020] Figure 6 This is a second-view structural diagram of the locking component in this utility model.

[0021] The numbers on the map are:

[0022] 1. Mounting bracket; 2. Protective housing; 3. Rotating shaft; 4. Motor; 5. Emergency stop assembly; 6. Locking assembly;

[0023] 501. Circular box; 502. Fixing frame; 503. Slide rod; 504. Pressure block; 505. Top plate; 506. Magnetic plate; 507. Return spring; 508. Circular plate; 509. Electromagnet; 5010. Semicircular groove one; 5011. Semicircular groove two;

[0024] 601. Mounting box; 602. Connecting bracket; 603. Limiting bracket; 604. Piston; 605. Piston rod; 606. Circular plate; 607. Insert rod; 608. Drive oil pipe; 609. Reset oil pipe; 6010. Oil outlet pipe one; 6011. Oil outlet pipe two. Detailed Implementation

[0025] The following description is intended to disclose the present invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art.

[0026] Reference Figure 1 As shown, an arbitrary stop rotating shaft includes a mounting bracket 1, a protective box 2 fixedly mounted on the mounting bracket 1, a rotating shaft 3 rotatably mounted inside the protective box 2, a motor 4 for driving the rotating shaft 3 fixedly mounted on the left end of the protective box 2, and an emergency stop component 5 and a locking component 6 are provided inside the protective box 2.

[0027] Reference Figure 2-4 As shown, specifically in this embodiment, the emergency stop assembly 5 includes a fixed frame 502 fixedly connected to the inner wall of the protective box 2. An annular box 501 sleeved on the rotating shaft 3 is fixedly connected to the fixed frame 502. Several sets of braking parts are slidably installed inside the annular box 501. The several sets of braking parts are evenly arranged in a ring about the central axis of the annular box 501. An annular plate 508 is fixedly connected to the inner side wall of the annular box 501. Several sets of electromagnets 509 for driving the braking parts are fixedly installed on the annular plate 508.

[0028] Furthermore, when an emergency stop signal is issued, the electromagnet 509 is energized. The energized electromagnet 509 attracts the magnetic plate 506 in the braking unit to achieve braking. The braking process has a fast response speed, and the multiple independent braking units evenly distributed in a ring ensure that a single point failure will not significantly affect the overall braking effect.

[0029] Reference Figure 2-4 As shown, specifically in this embodiment, the braking part includes two sets of slide rods 503 that are slidably connected to the inner end of the annular box 501. The ends of the two sets of slide rods 503 near the rotating shaft 3 pass through the annular box 501 and are fixedly connected to a pressure block 504. The end of the pressure block 504 near the rotating shaft 3 is arc-shaped, and the arc-shaped end of the pressure block 504 is in contact with the surface of the rotating shaft 3. The other end of the slide rods 503 is fixedly connected to a top plate 505. A magnetic plate 506 for cooperating with an electromagnet 509 is fixedly connected on the top plate 505. Both ends of the top plate 505 and the annular box 501 are fixedly connected to a return spring 507 sleeved on the slide rod 503.

[0030] Furthermore: When an emergency stop signal is issued, the electromagnet 509 is energized. The energized electromagnet 509 immediately attracts the magnetic plate 506. After the magnetic plate 506 is attracted, it will drive the top plate 505 to move downward, which in turn will drive the slide rod 503 to move radially forward, causing the pressure block 504 to lock the rotating shaft 3, thereby braking the rotating shaft 3. When the electromagnet 509 is de-energized, under the drive of the return spring 507, the top plate 505 can be lifted, which will then drive the pressure block 504 to reset through the slide rod 503, so that the pressure block 504 no longer abuts against the rotating shaft 3, and the rotating shaft 3 resumes its rotational ability.

[0031] Reference Figure 2-4 As shown, specifically in this embodiment, the two ends of the pressure block 504 are respectively provided with a semi-circular groove 1 5010 and a semi-circular groove 2 5011, and the diameters of the semi-circular groove 1 5010 and the semi-circular groove 2 5011 are the same.

[0032] Furthermore, the diameters of the first semicircular groove 5010 and the second semicircular groove 5011 are the same, so that the first semicircular groove 5010 in any of the pressure blocks 504 can form a limiting groove with the second semicircular groove 5011 of the pressure blocks 504 on its left and right sides. The limiting groove is used to cooperate with the locking component 6 to fix the pressure block 504.

[0033] Reference Figure 2-4 As shown, specifically in this embodiment, the return spring 507 is made of austenitic stainless steel. The core advantage of austenitic stainless steel lies in its stable austenitic structure, which results in non-magnetism and excellent corrosion resistance. In the working environment of an electromagnet, the return spring 507 made of austenitic stainless steel will not interfere with the magnetic field, will not be magnetically attracted by the magnet, and has low eddy current losses during operation.

[0034] Reference Figure 5-6 As shown, specifically in this embodiment, the locking component 6 includes a connecting frame 602 fixedly connected to the protective box 2. A mounting box 601 sleeved on the rotating shaft 3 is fixedly connected between the connecting frames 602. Limiting frames 603 are fixedly connected to the inner walls of the left and right sides of the mounting box 601. A piston 604 is slidably connected inside the mounting box 601. Several sets of piston rods 605 are fixedly connected to one end of the piston 604 near the emergency stop component 5. The right end of each piston rod 605 passes through the mounting box 601 and is fixedly connected to a circular plate 606. Several sets of insert rods 607 are fixedly installed on the circular plate 606.

[0035] Furthermore: After emergency braking, oil is supplied to the drive oil pipe 608 and discharged through the outlet oil pipe 6010, causing the piston 604 to move to the left. This, in turn, drives the circular plate via the piston rod 605, which in turn drives the insert rod 607 to move. The insert rod 607 is then inserted into the limiting groove formed by the semicircular groove 5010 in the pressure block 504 and the semicircular groove 5011 in the adjacent pressure block 504. This fixes the position of the pressure block 504 and mechanically locks the shaft. After braking, the insert rod 607 is inserted into the pressure block 504 via hydraulic drive. At this point, the electromagnet 509 is immediately de-energized after hydraulic locking. The pressure block 504 is mechanically limited only by the insert rod 607, eliminating the risk of continuous heating of the electromagnetic coil and avoiding the danger caused by overheating during prolonged electromagnetic drive.

[0036] Reference Figure 5-6 As shown, specifically in this embodiment, the lower end of the mounting box 601 is fixedly installed with a drive oil pipe 608 and a reset oil pipe 609, and the upper end of the mounting box 601 is fixedly installed with an oil outlet pipe 1 6010 and an oil outlet pipe 2 6011. Furthermore, solenoid valves are fixedly installed on the surfaces of the drive oil pipe 608, the reset oil pipe 609, the oil outlet pipe 1 6010, and the oil outlet pipe 2 6011.

[0037] Furthermore: When the drive piston 604 is working, oil enters through the drive oil pipe 608, oil exits through the second oil pipe 6011, and the reset oil pipe 609 and the first oil pipe 6010 are closed. When the reset piston 604 is working, oil enters through the reset oil pipe 609, oil exits through the first oil pipe 6010, and the drive oil pipe 608 and the second oil pipe 6011 are closed.

[0038] The working principle of this utility model is as follows: When the rotating shaft is rotating, an emergency stop signal is issued at any time, which causes the electromagnet 509 to be energized. After being energized, the electromagnet 509 immediately attracts the magnetic plate 506. After the magnetic plate 506 is attracted, it will drive the top plate 505 to move down, which in turn drives the slide rod 503 to move radially forward, so that the pressure block 504 locks the rotating shaft 3, thereby braking the rotating shaft 3.

[0039] After emergency braking, oil is supplied to the drive oil pipe 608 and discharged through the outlet oil pipe 6010, causing the piston 604 to move to the left. This, in turn, drives the circular plate through the piston rod 605, which in turn drives the insert rod 607 to move. The insert rod 607 is then inserted into the limiting groove formed by the semicircular groove 5010 in the pressure block 504 and the semicircular groove 5011 of the adjacent pressure block 504, thereby fixing the position of the pressure block 504 and mechanically locking the pressure block 504 and the rotating shaft 3.

[0040] In this scheme: when an emergency stop signal is issued, the electromagnet 509 is energized. The energized electromagnet 509 attracts the magnetic plate 506 in the braking unit to achieve braking. The braking process has a fast response speed, and the multiple independent braking units are evenly distributed in a ring, so that a single point failure will not have too much impact on the overall braking effect.

[0041] Meanwhile, after the emergency stop assembly 5 applies the brakes, the hydraulic drive causes the insert rod 607 to be inserted into the pressure block 504. At this time, the electromagnet 509 is immediately de-energized after hydraulic locking. That is, the pressure block 504 is mechanically limited only by the insert rod 607, eliminating the risk of continuous heating of the electromagnetic coil and avoiding the danger caused by overheating of electromagnetic drive over a long period of time.

[0042] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A rotating shaft that can be stopped arbitrarily, characterized in that, Includes a mounting bracket (1), on which a protective box (2) is fixedly mounted, and a rotating shaft (3) is rotatably mounted inside the protective box (2). A motor (4) for driving the rotating shaft (3) is fixedly mounted on the left end of the protective box (2), and an emergency stop assembly (5) and a locking assembly (6) are provided inside the protective box (2). The emergency stop assembly (5) includes a fixed frame (502) fixedly connected to the inner wall of the protective box (2). An annular box (501) sleeved on the rotating shaft (3) is fixedly connected to the fixed frame (502). Several sets of braking parts are slidably installed inside the annular box (501). The several sets of braking parts are evenly arranged in a ring about the central axis of the annular box (501). An annular plate (508) is fixedly connected to the inner side wall of the annular box (501). Several sets of electromagnets (509) for driving the braking parts are fixedly installed on the annular plate (508).

2. The arbitrary stop rotating shaft according to claim 1, characterized in that: The braking part includes two sets of slide rods (503) that are slidably connected to the inner end of the annular box (501). The ends of the two sets of slide rods (503) near the rotating shaft (3) pass through the annular box (501) and are fixedly connected to a pressure block (504). The end of the pressure block (504) near the rotating shaft (3) is arc-shaped, and the arc-shaped end of the pressure block (504) is in contact with the surface of the rotating shaft (3). The other end of each slide rod (503) is fixedly connected to a top plate (505). A magnetic plate (506) for cooperating with an electromagnet (509) is fixedly connected to the top plate (505). Both ends of the top plate (505) and the annular box (501) are fixedly connected to a return spring (507) sleeved on the slide rod (503).

3. The arbitrary stop rotating shaft according to claim 2, characterized in that: The pressure block (504) has a semi-circular groove one (5010) and a semi-circular groove two (5011) at its two ends, and the diameters of the semi-circular groove one (5010) and the semi-circular groove two (5011) are the same.

4. The arbitrary stop rotating shaft according to claim 2, characterized in that: The return spring (507) is made of austenitic stainless steel.

5. An arbitrarily stopped rotating shaft according to claim 1, characterized by: The locking assembly (6) includes a connecting frame (602) fixedly connected to the protective box (2), and a mounting box (601) sleeved on the rotating shaft (3) is fixedly connected between the connecting frames (602). Limiting frames (603) are fixedly connected to the inner walls of the left and right sides of the mounting box (601). Furthermore, a piston (604) is slidably connected inside the mounting box (601). Several sets of piston rods (605) are fixedly connected to one end of the piston (604) near the emergency stop assembly (5). The right end of each piston rod (605) passes through the mounting box (601) and is fixedly connected to a circular plate (606). Several sets of insert rods (607) are fixedly installed on the circular plate (606).

6. An arbitrarily stopped rotating shaft according to claim 5, wherein: The lower end of the mounting box (601) is fixedly equipped with a drive oil pipe (608) and a reset oil pipe (609), and the upper end of the mounting box (601) is fixedly equipped with an oil outlet pipe one (6010) and an oil outlet pipe two (6011). Solenoid valves are fixedly installed on the surfaces of the drive oil pipe (608), the reset oil pipe (609), the oil outlet pipe one (6010), and the oil outlet pipe two (6011).

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