Non-return mechanism for permanent magnet cylinder

Abstract

The utility model discloses a non-return mechanism for a permanent magnet cylinder, which comprises an outer ring, an inner ring is arranged in the outer ring, the peripheral surface of the inner ring is fixedly connected with two mounting racks, and the opposite sides of the two mounting racks are movably connected with a plurality of non-return blocks at equal intervals; according to the non-return mechanism for the permanent magnet drum, the limiting groove, the sliding rod and the spring are arranged, the clamping block can be driven to slide in the non-return block, the permanent magnet drum can be prevented from further reversely rotating by being matched with the clamping groove, and external air can sequentially pass through the shutter shielding plate and the dustproof net to enter the non-return mechanism; by arranging the shutter shielding plate, large dust or foreign matter and the like can be prevented from entering the check mechanism along with air, the noise reduction effect can be achieved, and small dust or the like can be prevented from entering the check mechanism along with air through the dustproof net. And the dustproof effect of the non-return mechanism is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of permanent magnetic rollers, in particular to a non-return mechanism for permanent magnetic rollers. Background Art

[0002] As we all know, electric rollers have been widely used in belt conveyors and lifting equipment that are restricted by the environment due to their compact structure. In recent years, as the country has stepped up the transformation of energy-saving projects, a high-power permanent magnetic roller that can greatly reduce energy consumption is being widely used in mining, metallurgy, chemical industry, coal, building materials, electricity, food, transportation and other departments. When the upper conveyor is in the event of a power outage or emergency stop, the material will reverse due to its own weight, causing serious safety accidents. Therefore, it is necessary to install a check mechanism on the permanent magnetic roller.

[0003] The patent document with application number CN202021497066.3 discloses a backstop for a high-power electric roller and a permanent magnet roller, including an inner ring, an outer ring, and a plurality of special-shaped eccentric wedges of a solid structure arranged at equal intervals in a raceway; wedge convex shaft ends connected integrally and symmetrically arranged at both ends of the special-shaped eccentric wedges; rollers are arranged between the special-shaped eccentric wedges to separate them, and a plurality of rollers are evenly distributed in the raceway to support the inner ring and the outer ring in rolling; roller convex shaft ends connected integrally and symmetrically arranged at both ends of the rollers are connected to the wedge convex shaft ends. They are inserted into the shaft holes of the yoke plates on both sides for rotational connection. The yoke plates are annular flat plates suspended on both sides of the raceway, parallel and symmetrically placed vertically, and fixed by tightening pins. An annular spacer ring and a retaining ring are arranged on the outer side of the yoke plate for axial limitation. The retaining ring is fixed on the inner ring, and an annular groove is arranged on the retaining ring, and the spacer ring is embedded in the annular groove. A number of second connecting holes are evenly distributed on the end face of the inner ring or key grooves are arranged in the holes of the inner ring, and a number of first connecting holes are evenly distributed on the end face of the outer ring. It is a backstop suitable for high-power electric rollers and permanent magnet rollers.

[0004] In the above application, the inner ring of the check mechanism will rub against the special-shaped eccentric wedge when rotating, and the friction will generate a large amount of heat. As the use time increases, the special-shaped eccentric wedge is prone to heat deformation, resulting in reduced check effect and even causing safety accidents. To address the above problems, we have introduced a check mechanism for permanent magnet cylinders. Utility Model Content

[0005] The utility model discloses a backstop mechanism for a permanent magnetic cylinder, aiming to solve the technical problem that as the use time increases, a special-shaped eccentric wedge block is easily deformed by heat, resulting in reduced backstop effect.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A check mechanism for a permanent magnetic cylinder comprises an outer ring, an inner ring is arranged inside the outer ring, two mounting brackets are fixedly connected to the outer circumferential surface of the inner ring, a plurality of check blocks are movably connected at equal intervals on opposite sides of the two mounting brackets, a clamping block is slidably connected to the check block, a limiting groove is arranged in the clamping block, a sliding rod is slidably connected to the limiting groove, the vertical cross-sections of the limiting groove and the sliding rod are both T-shaped, the surface of the sliding rod is located below the clamping block and a spring is sleeved thereon, a plurality of clamping grooves are arranged on the inner circumferential surface of the outer ring corresponding to the position of the clamping block, a plurality of mounting plates are fixedly connected to the outer circumferential surface of the inner ring at the front and rear ends of the mounting bracket, the end of the mounting plate away from the mounting bracket is movably connected to a dustproof net, the end of the dustproof net away from the mounting plate is movably connected to a louver shield, and the side of the blades of the louver shield away from the dustproof net is tilted downward by a certain angle.

[0008] In a preferred solution, a roller is movably connected between two adjacent check blocks on opposite sides of the two mounting frames, an oil storage cavity is provided in the roller, and an oil leakage hole is opened on the surface of the roller;

[0009] The provision of rollers improves the support strength and stability of the check mechanism for inner and outer rings of large structural dimensions. The provision of oil storage chambers and oil leakage holes can not only reduce the friction between the block, rollers and the outer and inner rings, but also help reduce the noise generated by the check mechanism during operation.

[0010] In a preferred solution, the check block and the mounting frame, the roller and the mounting frame, the mounting plate and the dust screen, and the dust screen and the shutter are all fixed by bolts, and a semicircular hole with the same size as the bolt is opened at the bottom end of the check block;

[0011] Since the check block and the mounting frame, the roller and the mounting frame, the mounting plate and the dust screen, and the dust screen and the louver are all fixed by bolts, when a problem occurs in a single component, the problematic component can be handled separately.

[0012] In a preferred solution, a buffer pad is fixedly connected to the inner wall of the slot, a sound-absorbing velvet cloth is fixedly connected to the bottom end of the blades of the louver shield, a plurality of first connection holes are opened at the front end of the outer ring, and a second connection hole is opened at the front end of the inner ring;

[0013] The impact of the block can be buffered by arranging the buffer pad, the noise generated by the non-return mechanism during operation can be reduced by arranging the sound-absorbing flannel cloth, and the connection between the non-return mechanism and other components can be facilitated by arranging the first connecting hole and the second connecting hole.

[0014] The utility model provides a non-return mechanism for a permanent magnetic cylinder through improvement, which has the following improvements and advantages compared with the prior art:

[0015] As can be seen from the above, a check mechanism for a permanent magnetic cylinder comprises an outer ring, an inner ring is arranged inside the outer ring, two mounting brackets are fixedly connected to the outer circumferential surface of the inner ring, a plurality of check blocks are movably connected at equal intervals on opposite sides of the two mounting brackets, a clamping block is slidably connected to the check block, a limiting groove is arranged in the clamping block, a sliding rod is slidably connected to the limiting groove, the vertical sections of the limiting groove and the sliding rod are both T-shaped, a spring is sleeved on the surface of the sliding rod below the clamping block, a plurality of clamping grooves are arranged on the inner circumferential surface of the outer ring corresponding to the position of the clamping block, a plurality of mounting plates are fixedly connected to the outer circumferential surface of the inner ring at the front and rear ends of the mounting bracket, a dustproof net is movably connected to the end of the mounting plate away from the mounting bracket, and a shutter is movably connected to the end of the dustproof net away from the mounting plate The blades of the louver shield are inclined downward at a certain angle away from the dustproof net; a non-return mechanism for a permanent magnetic cylinder provided by the utility model can drive the card block to slide inside the non-return block by setting a limit groove, a sliding rod and a spring, and cooperate with the card groove to prevent the permanent magnetic cylinder from further reverse rotation, and the outside air can enter the non-return mechanism through the louver shield and the dustproof net in turn, thereby having a cooling effect on the inside of the non-return mechanism and avoiding the card block from being deformed by heat. By setting the louver shield, not only can larger dust or foreign matter be prevented from entering the inside of the non-return mechanism with the air, but also the noise can be reduced. By setting the dustproof net, smaller dust can be prevented from entering the inside of the non-return mechanism with the air, thereby further improving the dustproof effect of the non-return mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of a non-return mechanism for a permanent magnetic cylinder proposed by the utility model;

[0017] Figure 2 This is a front cross-sectional structural schematic diagram of a non-return mechanism for a permanent magnetic cylinder proposed by the utility model;

[0018] Figure 3 This is a schematic diagram of the inner ring explosion structure of a non-return mechanism for a permanent magnetic cylinder proposed by the utility model;

[0019] Figure 4 The utility model is a schematic cross-sectional structure diagram of a check block of a check mechanism for a permanent magnetic cylinder.

[0020] In the attached drawings: 1. Outer ring; 2. Inner ring; 3. Mounting frame; 4. Check block; 5. Clamping block; 6. Limiting groove; 7. Sliding rod; 8. Spring; 9. Clamping groove; 10. Mounting plate; 11. Dust net; 12. Louver; 13. Roller; 14. Oil leakage hole; 15. Buffer pad; 16. Sound-absorbing velvet cloth; 17. First connecting hole; 18. Second connecting hole. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application usually described and marked in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the application claimed for protection, but merely represents the selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without making creative work belong to the scope of protection of the present application.

[0022] The utility model discloses a non-return mechanism for a permanent magnetic cylinder, which is mainly used in the scenario where a special-shaped eccentric wedge is easily deformed by heat as the service time increases, resulting in a reduction in the non-return effect.

[0023] Reference Figure 1-Figure 4 A check mechanism for a permanent magnetic cylinder comprises: an outer ring 1, an inner ring 2 is arranged inside the outer ring 1, two mounting frames 3 are fixedly connected to the outer circumferential surface of the inner ring 2, a plurality of check blocks 4 are movably connected at equal intervals on the opposite sides of the two mounting frames 3, a card block 5 is slidably connected to the check block 4, a limiting groove 6 is arranged in the card block 5, a slide bar 7 is slidably connected to the limiting groove 6, the vertical sections of the limiting groove 6 and the slide bar 7 are both T-shaped, a spring 8 is sleeved on the surface of the slide bar 7 located below the card block 5, a plurality of card grooves 9 are arranged on the inner circumferential surface of the outer ring 1 corresponding to the position of the card block 5, a plurality of mounting plates 10 are fixedly connected to the outer circumferential surface of the inner ring 2 at the front and rear ends of the mounting frame 3, a dustproof net 11 is movably connected to the end of the mounting plate 10 away from the mounting frame 3, a louver shroud 12 is movably connected to the end of the dustproof net 11 away from the mounting plate 10, and the blades of the louver shroud 12 are tilted downward at a certain angle on the side away from the dustproof net 11.

[0024] In this embodiment, when the permanent magnetic drum rotates, it will drive the inner ring 2 connected to it to rotate clockwise along the inner circumference of the outer ring 1, and the inner circumference of the outer ring 1 will squeeze the block 5. The limiting groove 6 inside the block 5 will slide downward along the surface of the slide bar 7. The spring 8 squeezed by the block 5 will shrink. At this time, the block 5 will enter the inside of the check block 4 so that the permanent magnetic drum can rotate smoothly. When the permanent magnetic drum rotates in the opposite direction, it will drive the inner ring 2 connected to it to rotate counterclockwise along the inner circumference of the outer ring 1, and the block 5 will move toward the inside of the groove 9. As the block 5 moves, the spring 8 inside it will push the limiting groove 6 to slide upward along the surface of the slide bar 7 in order to reset. At this time, the block 5 will leave the inside of the check block 4, and the top of the block 5 will be completely stuck in the groove 9. The block 5 will not be able to move further due to the obstruction of the side wall of the groove 9, thereby preventing the permanent magnetic drum from further rotating. In reverse rotation, as the permanent magnet drum rotates, a large amount of heat will be generated between the block 5 and the outer ring 1 and the inner ring 2 due to continuous friction. The outside air can enter the inside of the non-return mechanism through the louver 12 and the dustproof net 11 in turn, thereby cooling the block 5, the outer ring 1 and the inner ring 2, avoiding the deformation of the block 5 due to heat, ensuring the non-return effect, and effectively extending the service life of the non-return block 4. By setting the louver 12, not only can larger dust or foreign matter be prevented from entering the inside of the non-return mechanism with the air, thereby ensuring that the inner ring 2 can rotate smoothly, but also because the side of its blades away from the dustproof net 11 is tilted downward at a certain angle, it can block the path of sound propagation, thereby reducing noise. By setting the dustproof net 11, smaller dust can be prevented from entering the inside of the non-return mechanism with the air, further improving the dustproof effect of the non-return mechanism.

[0025] In the above scheme, considering that the backstop structure is not strong enough, it is not suitable for high-power permanent magnet drums, and the block 5 will be worn due to continuous friction with the outer ring 1 and the inner ring 2, thereby affecting the service life of the backstop block 4. The specific operation is as follows:

[0026] Reference Figure 3 In a preferred embodiment, a roller 13 is movably connected between two adjacent check blocks 4 on opposite sides of the two mounting frames 3, an oil storage cavity is provided in the roller 13, and an oil leakage hole 14 is opened on the surface of the roller 13;

[0027] In this embodiment: rollers 13 are provided to support the rolling of the inner ring 2 and the outer ring 1, thereby improving the supporting strength and stability of the check mechanism for the inner ring 2 and the outer ring 1 of large structural dimensions. Lubricating grease is stored in the oil storage cavity inside the roller 13. The lubricating grease will be melted by the heat generated during the friction between the roller 13 and the outer ring 1 and the inner ring 2, and will flow out through the oil leakage hole 14 connected to the oil storage cavity, thereby not only reducing the friction between the block 5, the roller 13 and the outer ring 1 and the inner ring 2, effectively extending the service life of the block 5 and the roller 13, but also helping to reduce the noise generated by the check mechanism during operation.

[0028] In the above scheme, it is considered that when the check block 4 or the roller 13 is damaged, the check effect of the check mechanism will be affected. When the dust screen 11 is full of dust, the dust removal ability of the check mechanism will be reduced, affecting the efficiency and effect of heat dissipation. If the entire check mechanism is frequently replaced, the production cost will be increased. The specific operation is as follows:

[0029] Reference Figure 1 and Figure 3 In a preferred embodiment, the check block 4 and the mounting frame 3, the roller 13 and the mounting frame 3, the mounting plate 10 and the dust screen 11, and the dust screen 11 and the shutter 12 are all fixed by bolts, and a semicircular hole having the same size as the bolt is opened at the bottom end of the check block 4;

[0030] In this embodiment: since the check block 4 and the mounting frame 3, the roller 13 and the mounting frame 3, the mounting plate 10 and the dustproof net 11, and the dustproof net 11 and the louver 12 are all fixed by bolts, when a problem occurs in a single component, the problematic component can be dealt with separately, thereby eliminating the need to frequently replace the entire check mechanism, effectively reducing the production cost. A semicircular hole consistent with the size of the bolt is provided at the bottom end of the check block 4 to prevent the bolt from blocking the movement of the blocking block 5, thereby ensuring the check effect.

[0031] In the above scheme, considering that the block 5 will collide with the side wall of the slot 9 during the backstop, causing damage to the block 5 or the slot 9, reducing the backstop effect, the backstop mechanism will generate a large noise when working, and the backstop mechanism needs to be connected with other components. The specific operation is as follows:

[0032] Reference Figure 1-Figure 3 In a preferred embodiment, a buffer pad 15 is fixedly connected to the inner wall of the slot 9, a sound-absorbing velvet cloth 16 is fixedly connected to the bottom end of the blades of the louver shroud 12, a plurality of first connection holes 17 are opened at the front end of the outer ring 1, and a second connection hole 18 is opened at the front end of the inner ring 2;

[0033] In this embodiment: By arranging the buffer pad 15, the impact of the block 5 can be buffered, thereby preventing the block 5 or the card slot 9 from being damaged, which is beneficial to extending the service life of the check block 4 and effectively ensuring the check effect. By arranging the sound-absorbing flannel cloth 16, the noise generated by the check mechanism during operation can be reduced. By arranging the first connecting hole 17 and the second connecting hole 18, it is convenient to connect the check mechanism with other components.

[0034] Working principle: When in use, first, when the permanent magnetic roller rotates, it will drive the connected inner ring 2 to rotate clockwise along the inner circumference of the outer ring 1, and the inner circumference of the outer ring 1 will squeeze the block 5, and the limit groove 6 inside the block 5 will slide downward along the surface of the slide bar 7. The spring 8 squeezed by the block 5 will shrink. At this time, the block 5 will enter the inside of the check block 4 so that the permanent magnetic roller can rotate smoothly. When the permanent magnetic roller rotates in the opposite direction, it will drive the connected inner ring 2 to rotate counterclockwise along the inner circumference of the outer ring 1, and the block 5 will move toward the inside of the slot 9. As the block 5 moves, the spring 8 inside it will push the limit groove 6 to slide upward along the surface of the slide bar 7 in order to reset. At this time, the block 5 will leave the inside of the check block 4, and the top of the block 5 will be completely stuck in the inside of the slot 9. The block 5 will not be able to move further due to the obstruction of the side wall of the slot 9, thereby preventing the permanent magnetic roller from further moving. The outer ring 1 and the inner ring 2 rotate in the reverse direction. As the permanent magnet drum rotates, a large amount of heat will be generated due to continuous friction between the block 5 and the outer ring 1 and the inner ring 2. The outside air can enter the inside of the non-return mechanism through the louver 12 and the dustproof net 11 in turn, so as to cool the block 5, the outer ring 1 and the inner ring 2, avoid the deformation of the block 5 due to heat, ensure the non-return effect, and effectively extend the service life of the non-return block 4. By setting the louver 12, not only can larger dust or foreign matter be prevented from entering the inside of the non-return mechanism with the air, thereby ensuring that the inner ring 2 can rotate smoothly, but also because the side of the blade away from the dustproof net 11 is tilted downward at a certain angle, it can block the path of sound propagation, thereby reducing noise. By setting the dustproof net 11, smaller dust can be prevented from entering the inside of the non-return mechanism with the air, further improving the dustproof effect of the non-return mechanism.

[0035] The above are only preferred specific implementations of the utility model, but the protection scope of the utility model is not limited to them. The replacement can be a replacement of part of the structure, device, method steps, or a complete technical solution. Equivalent replacement or changes based on the technical solution of the utility model and its utility model concept should be included in the protection scope of the utility model.

Claims

1. A non-return mechanism for a permanent magnetic cylinder, comprising an outer ring (1), wherein an inner ring (2) is arranged inside the outer ring (1), characterized in that: The outer peripheral surface of the inner ring (2) is fixedly connected to two mounting frames (3), and a plurality of check blocks (4) are movably connected at equal intervals on opposite sides of the two mounting frames (3). A clamping block (5) is slidably connected inside the check block (4), and a limiting groove (6) is provided inside the clamping block (5). A sliding rod (7) is slidably connected inside the limiting groove (6). The vertical sections of the limiting groove (6) and the sliding rod (7) are both T-shaped. A spring (8) is sleeved on the surface of the sliding rod (7) below the clamping block (5). The outer ring A plurality of slots (9) are provided on the inner circumferential surface of the inner ring (1) at positions corresponding to the clamping blocks (5); a plurality of mounting plates (10) are fixedly connected to the outer circumferential surface of the inner ring (2) at the front and rear ends of the mounting frame (3); an end of the mounting plate (10) away from the mounting frame (3) is movably connected to a dust screen (11); an end of the dust screen (11) away from the mounting plate (10) is movably connected to a louver (12); and a side of the blades of the louver (12) away from the dust screen (11) is tilted downward at a certain angle.

2. A non-return mechanism for a permanent magnetic cylinder according to claim 1, characterized in that: A roller (13) is movably connected between two adjacent check blocks (4) on opposite sides of the two mounting frames (3).

3. A non-return mechanism for a permanent magnetic cylinder according to claim 2, characterized in that: An oil storage cavity is provided in the roller (13), and an oil leakage hole (14) is provided on the surface of the roller (13).

4. A non-return mechanism for a permanent magnetic cylinder according to claim 2, characterized in that: The check block (4) and the mounting frame (3), the roller (13) and the mounting frame (3), the mounting plate (10) and the dust screen (11), and the dust screen (11) and the louver (12) are all fixed by bolts, and a semicircular hole having the same size as the bolt is provided at the bottom end of the check block (4).

5. The non-return mechanism for a permanent magnetic cylinder according to claim 1, characterized in that: A buffer pad (15) is fixedly connected to the inner wall of the slot (9).

6. A non-return mechanism for a permanent magnetic cylinder according to claim 1, characterized in that: The bottom ends of the blades of the louver shield (12) are fixedly connected with a sound-absorbing fleece cloth (16).

7. A non-return mechanism for a permanent magnetic cylinder according to claim 1, characterized in that: The front end of the outer ring (1) is provided with a plurality of first connection holes (17), and the front end of the inner ring (2) is provided with a second connection hole (18).

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