An improved lifting device

Abstract

The invention relates to an improved lifter, which is composed of a lifter body, a magnet part, a bearing and a lifting mechanism, and also includes a conversion device, the conversion device includes a check bearing, a converter, an adjusting spring, a chain, a bayonet and an adjusting spring, the outer periphery of the check bearing is coated with an aluminum sleeve, a spring spring is provided on one side of the converter, the check bearing, a magnetic core and the bearing are connected through the converter, and the converter is fixed with a chain interface; a connecting mechanism, the connecting mechanism includes a connector, a keyway and a key pin, both ends of the connector are provided with inclined grooves, the keyway and the key pin are arranged at both ends of the connector, and the key pin is installed in the keyway, the whole lifter structure is more compact, so that the suction and holding force is stronger, the residual magnetism of the magnetic circuit design is zero, the safety factor is improved, the maximum pull-off force is 2.8-4 times of the rated lifting force, the failure rate is reduced, it is safe and reliable, and is widely used in the fields of handling, leveling mechanical parts and transportation industries, installation and handling, so that the lifter has a smaller volume and a lighter deadweight.

Description

Technical Field

[0001] The invention relates to a lifter, in particular to an automatic permanent magnet lifter. Background Art

[0002] In the prior art, the permanent magnetic lifter is composed of a strong magnetic system made of high-performance NdFeB permanent magnetic material. By turning the handle, the magnetic force of the strong magnetic system is changed to achieve the absorption and release of the workpiece. There is a lifting ring on the top of the lifter for lifting objects. It has the characteristics of no power consumption, strong suction, low residual magnetism, easy operation, long life, safety and reliability. It is widely used in the machinery industry, mold manufacturing industry, warehouses, transportation and other departments to transport magnetic objects such as steel plates and steel ingots.

[0003] At present, an automatic permanent magnetic lifter is used, which includes a machine body and a rotating device. A lifting device that can drive the rotating device to rotate is connected to the rotating device. A rotating magnet, an inner rotating cover plate and an outer rotating cover plate are respectively arranged on the rotating device and on both sides of the lifting device. The rotating magnet is clamped between the inner rotating cover plate and the outer rotating cover plate. A partition wall is arranged between the lifting device and the inner rotating cover plate. Fixed magnets are arranged on the machine body and on both sides of the rotating magnet. A rolling device is clamped on at least one side between the inner rotating cover plate and the partition wall or between the outer rotating cover plate and the inner wall adjacent to the machine body. Although the problems of large suction force, small volume and stable transmission are solved, the structure has weak suction force, heavy deadweight, and surplus magnetic circuit, which affects the safety factor. The pull-off force is insufficient and there is a safety hazard. Summary of the invention

[0004] In view of the above technical problems, the present invention provides an improved lifter with light weight, stronger holding force, zero magnetic circuit residual magnetism, high safety factor, compact and light structure, and low failure rate.

[0005] In order to achieve the above object, the technical solution adopted by the present invention is:

[0006] An improved lifter, which consists of a lifter body, a magnet part, a bearing and a lifting mechanism, wherein the lifting mechanism is arranged at the upper end of the lifter body, the magnet part is arranged in the lifter, the magnet part consists of a magnetic core and a magnetic steel, and the bearing is arranged on one side of the magnetic core. The invention is characterized in that: it also includes a conversion device, which is arranged at the side end of the magnetic core, and the conversion device includes a check bearing, a converter, an adjusting spring, a chain, a bayonet and an adjusting spring. The outer periphery of the check bearing is coated with an aluminum sleeve, the converter is equipped with a chain, a spring spring is arranged on one side of the converter, a bayonet and an adjusting spring are installed in the converter, the check bearing, the magnetic core and the bearing are connected through the converter, and the converter is fixed with a chain interface; a connecting mechanism, the connecting mechanism includes a connector, a keyway and a key pin, the connector is connected to the magnetic core and the bearing, and slope grooves are arranged at both ends of the connector, the slope groove and the bayonet are mutually clamped, the keyway and the key pin are arranged at both ends of the connector, and the key pin is installed in the keyway.

[0007] Preferably, the check bearing and the periphery of the bearing are provided with an aluminum sleeve.

[0008] Preferably, the lifting mechanism comprises a lifting rod and a lifting ring.

[0009] Preferably, the lifting rod is fixed with a chain interface, and the lifting mechanism and the conversion device are in a state of sucking and unloading materials through the chain interface.

[0010] Preferably, when in a non-material-absorbing state, the latches at both ends of the converter are locked with the inclined grooves at both ends of the connector, and the magnetic lines of force pass through the N pole of the magnet, through the magnetic core and then return to the S pole of the magnet, forming a closed loop state of the magnetic circuit inside the lifter body.

[0011] Preferably, when in the upward moving material suction state, the lifting rod drives the converter, chain and spring to rotate upward, and at the same time, the pin in the converter drives the connector and the magnetic core to rotate 180 degrees, and the check bearing and the magnetic core rotate to a fixed limit.

[0012] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art:

[0013] The improved lifter of the present invention is composed of a lifter body, a magnet part, a bearing and a lifting mechanism, and also includes a conversion device, which is arranged at the side end of the magnetic core. The conversion device includes a check bearing, a converter, an adjusting spring, a chain, a bayonet and an adjusting spring. The outer periphery of the check bearing is covered with an aluminum sleeve, the converter is equipped with a chain, a spring spring is arranged on one side of the converter, a bayonet and an adjusting spring are installed in the converter, the check bearing, the magnetic core and the bearing are connected through the converter, and the converter is fixed with a chain interface; a connecting mechanism, the connecting mechanism includes a connector, a keyway and a key pin, the connector is connected to the magnetic core and the bearing, and slope grooves are arranged at both ends of the connector, and the slope grooves and the bayonet are mutually connected. Stuck, the keyway and key pin are arranged at both ends of the connector, and the key pin is installed in the keyway. When the automatic permanent magnet lifter is not lifting, the pins at both ends of the converter pop out to jam the inclined grooves at both ends of the magnetic core. When carrying, the lifting rod rises to drive the chain and the clockwork spring, and the pin drives the magnetic cores at both ends to rotate 180 degrees, and the check bearing fixes the magnetic core so that it does not flip over. At this time, it is in the material suction state. When it reaches the designated position to land, the lifting rod lands, and the clockwork spring drives the converter and the chain to rotate 180 degrees, and the pin retracts and falls into the inclined groove again. When it rises and evacuates again, the lifting rod rises, and the converter and the pin pop out to jam the magnetic cores at both ends to rotate 180 degrees, and the check bearing fixes the magnetic core so that it does not flip over. At this time, the lifter is in the unloading state.

[0014] The whole lifter has a more compact structure and lighter weight. The connection mechanism and the magnet part are used to make the holding force stronger. The magnetic circuit is designed with zero residual magnetism, which improves the safety factor. The maximum pull-out force is 2.8-4 times the rated lifting force, with a lower failure rate, safe and reliable, and material saving. It is widely used in the installation and transportation of machinery parts and components and in the transportation industry. The magnet part is made of Na-Fe-B magnetic neodymium iron boron material, which makes the lifter smaller and lighter. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a cross-sectional schematic diagram of the lifting device of the present invention.

[0016] Figure 2 The structural schematic diagram of the lifting device of the present invention is

[0017] Figure 3 It is a schematic diagram of the structure of the conversion device in the lifting device of the present invention.

[0018] Figure 4 It is a schematic diagram of the lifting device of the present invention in a non-suction state.

[0019] Figure 5 It is a schematic diagram of the lifting device of the present invention in the material sucking state.

[0020] Figure 6It is a schematic diagram of the structure of the connector in the present invention.

[0021] Among them: 1-lifting machine body, 2-magnet part, 201-magnetic core, 202-magnetic steel, 3-bearing, 4-lifting mechanism, 401-lifting rod, 402-lifting ring, 5-check bearing, 6-converter, 7-chain, 8-spring spring, 10-connector, 11-pin, 12-adjusting spring, 13-inclination groove, 14-aluminum sleeve, 15-chain interface, 16-keyway, 17-key pin. DETAILED DESCRIPTION

[0022] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments, which should not be construed as limiting the present invention.

[0023] like Figure 1-3 As shown, the present invention is an improved type of lifting device, which consists of a lifting device body 1, a magnet part 2, a bearing 3 and a lifting mechanism 4, wherein the lifting mechanism 4 is arranged at the upper end of the lifting device body 1, the magnet part 2 is arranged in the lifting device 1, the magnet part 2 is composed of a magnetic core 201 and a magnetic steel 202, the bearing 3 is arranged on one side of the magnetic core 201, and also includes a conversion device, the conversion device is arranged at the side end of the magnetic core 201, the conversion device includes a check bearing 5, a converter 6, a chain 7, a bayonet 11 and an adjusting spring 12, the outer periphery of the check bearing 5 is coated with an aluminum sleeve 14, the converter 6 is equipped with a chain 7, a spring spring 8 is arranged on one side of the converter 6, the bayonet 11 and the adjusting spring 12 are installed in the converter 6, the check bearing 5, the magnetic core 201 and the bearing 3 are connected through the converter 6, and the converter 6 is fixed with a chain interface 15; a connecting mechanism, such as Figure 6 As shown, the connection mechanism includes a connector 10, a key slot 16 and a key pin 17. The connector 10 is connected to the magnetic core 201 and the bearing 3. The two ends of the connector 10 are provided with an inclined groove 13. The inclined groove 13 and the bayonet pin 11 are mutually locked. The key slot 16 and the key pin 17 are arranged at both ends of the connector 10, and the key pin 17 is installed in the key slot 16. The outer periphery of the check bearing 5 and the bearing 3 is provided with an aluminum sleeve 14. The lifting mechanism 4 includes a lifting rod 401 and a lifting ring 402.

[0024] A chain interface 15 is fixed to the lifting rod 401 , and the lifting mechanism 4 and the conversion device are in a state of sucking and unloading materials through the chain interface 15 .

[0025] like Figure 4 As shown, when in a non-suction state, the latches 11 at both ends of the converter 6 are locked with the inclined grooves 13 at both ends of the connector 10, and the magnetic lines of force pass through the N pole of the magnet 202, through the magnetic core 201 and then return to the S pole of the magnet 202, forming a closed loop state of the magnetic circuit inside the lifter body 1. No magnetic lines of force come out from the working pole of the permanent magnet lifter, and no suction is generated.

[0026] like Figure 5 As shown, according to the improved lifter described in claim 1, when in the upward moving material suction state, the lifting rod 401 drives the converter 6, chain 7 and clockwork spring 8 to rotate and rise, and at the same time, the pin 11 in the converter 6 drives the connector 10 and the magnetic core 201 to rotate 180 degrees, and the check bearing 5 fixes the magnetic core 201 to rotate, and the magnetic lines of force pass from the N pole of the magnetic pole through the ferromagnetic shell, through the ferromagnetic workpiece and then return to the S pole of the yoke, so as to adsorb the workpiece on the working pole surface of the lifter, thereby performing lifting and handling operations.

[0027] When the transported object reaches the designated position for landing, the lifting rod landing spring drives the latch pin 11 to retract, the chain 7 and the connector 10 rotate 180 degrees, and the latch pin 11 falls into the inclined groove 13 again. When it rises and evacuates again, the lifting rod rises, the connector and the latch pin pop out to clamp the magnetic cores at both ends and rotate 180 degrees. The check bearing fixes the magnetic core and does not flip over. At this time, the lifter is in the unloading state.

[0028] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with the technology to understand the content of the present invention and implement it accordingly, and they cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. An improved lifting device, comprising a lifting device body (1), a magnet part (2), a bearing (3) and a lifting mechanism (4), wherein the lifting mechanism (4) is arranged at the upper end of the lifting device body (1), the magnet part (2) is arranged in the lifting device body (1), the magnet part (2) is composed of a magnetic core (201) and a magnetic steel (202), and the bearing (3) is arranged on one side of the magnetic core (201), characterized in that: The invention also comprises a conversion device, which is arranged at the side end of the magnetic core (201), and comprises a check bearing (5), a converter (6), a chain (7), a bayonet (11) and an adjusting spring (12). The check bearing (5) is coated with an aluminum sleeve (14) on its periphery, the converter (6) is equipped with a chain (7), a spring spring (8) is arranged on one side of the converter (6), a bayonet (11) and an adjusting spring (12) are installed in the converter (6), and the check bearing (5), the magnetic core (201) and the bearing (3) are connected by a A converter (6) is connected, the converter (6) being fixed with a chain interface (15); a connecting mechanism, the connecting mechanism comprising a connector (10), a key slot (16) and a key pin (17); the connector (10) is connected to the magnetic core (201) and the bearing (3); both ends of the connector (10) are provided with an inclined groove (13); the inclined groove (13) and the bayonet pin (11) are mutually locked; the key slot (16) and the key pin (17) are provided at both ends of the connector (10); and the key pin (17) is installed in the key slot (16); The lifting mechanism (4) comprises a lifting rod (401) and a lifting ring (402); A chain interface (15) is fixed to the lifting rod (401), and the lifting mechanism (4) and the conversion device are in a state of sucking and unloading materials through the chain interface (15); When in a non-absorbing state, the latches (11) at both ends of the converter (6) are locked with the inclined grooves (13) provided at both ends of the connector (10), and the magnetic lines of force pass through the N pole of the magnetic steel (202), through the magnetic core (201) and then return to the S pole of the magnetic steel (202), forming a closed loop state of the magnetic circuit inside the lifter body (1); When in the upward moving material suction state, the lifting rod (401) drives the converter (6), the chain (7) and the spring spring (8) to rotate upward, and at the same time, the latch pin (11) in the converter (6) drives the connector (10) and the magnetic core (201) to rotate 180 degrees, and the check bearing (5) fixes the limit magnetic core (201) to rotate.

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