Electric hoist for feeding solid materials

Abstract

The utility model discloses an electric hoist for throwing solid materials, which comprises a support beam and a first fixing block, the first fixing block is provided with a groove, the groove of the first fixing block is provided with a pair of sliding blocks, the support beam is provided with a pair of sliding chutes, the first fixing block is slidably mounted on the support beam through the sliding blocks, and the first fixing block is provided with a pair of sliding chutes. A pair of second supporting blocks are arranged on a groove of the first fixing block, a plurality of first motors are arranged on the second supporting blocks, driving wheels are arranged at the driving ends of the first motors and movably arranged on the lower wall face of the supporting beam, and a lifting device is arranged on the upper wall face of the first fixing block. The utility model relates to the technical field of hoisting transportation, and in the design, the multi-stage electric telescopic cylinder is driven to stretch out and draw back, so that the brake block extrudes the annular chain to decelerate and brake, a heavy object can be prevented from falling to the ground quickly, and the heavy object is prevented from hurting workers near the electric hoist.

Description

Technical Field

[0001] The utility model relates to the technical field of hoisting and transportation, in particular to an electric hoist for discharging solid materials. Background Art

[0002] An electric hoist is a special lifting device, usually installed on cranes such as overhead cranes and gantry cranes. It has the characteristics of small volume, light self-weight, simple operation and convenient use. It is mainly applied in industrial and mining enterprises, warehouses, docks and other places. At present, when the existing electric hoist is used for a long time, the temperatures of the motor and the endless chain increase, which affects the service lives of the motor and the endless chain. At the same time, when a fault occurs that the endless chain disengages from the drum device of the electric hoist, the endless chain cannot be braked, resulting in the heavy object falling to the ground quickly, which may cause injury to the staff near the electric hoist.

[0003] For example, the utility model patent with the publication number CN216377220U discloses an electric hoist, which includes a trolley. Two rows of rollers are rotatably connected to the top of the trolley. A drum is rotatably connected inside the trolley. A towing rope is wound around the drum. A hook is connected to the towing rope. A towing motor for driving the drum to rotate is further provided on the trolley. The towing motor is fixed at one end of the trolley. A counterweight is fixed at the other end of the trolley. The drum is located between the towing motor and the counterweight. The towing motor and the drum are coaxially arranged and are connected to one end of the drum. The center line of the drum is parallel to the center line of the rollers. By arranging the rollers below the support beam, the lifting stroke of the goods is reduced. When the electric hoist is used for a long time, the temperatures of the motor and the endless chain increase, which affects the service lives of the motor and the endless chain. At the same time, when a fault occurs that the endless chain disengages from the drum device or the motor shaft fails and idles, the endless chain cannot be braked, resulting in the heavy object falling to the ground quickly, which may cause injury to the staff near the electric hoist. Content of the Utility Model

[0004] Aiming at the deficiencies of the prior art, the utility model provides an electric hoist for discharging solid materials, which solves the problems that when the existing electric hoist is used for a long time, the temperatures of the motor and the endless chain increase, which affects the service lives of the motor and the endless chain. At the same time, when a fault occurs that the endless chain disengages from the drum device of the electric hoist, the endless chain cannot be braked, resulting in the heavy object falling to the ground quickly, which may cause injury to the staff near the electric hoist.

[0005] To achieve the above object, the utility model is realized by the following technical solutions: An electric hoist for delivering solid materials includes a support beam and a first fixing block. A groove is provided on the first fixing block. A pair of sliders are provided on the groove of the first fixing block. A pair of chutes are provided on the support beam. The first fixing block is slidably mounted on the support beam through the sliders. A pair of second support blocks are provided on the groove of the first fixing block. A number of first motors are provided on the second support blocks. A driving wheel is provided on the driving end of the first motor. The driving wheel is movably arranged on the lower wall surface of the support beam. A lifting device is provided on the upper wall surface of the first fixing block.

[0006] Preferably, the lifting device includes a motor chamber and a lifting chamber. The lifting chamber and the motor chamber are provided on the upper wall surface of the first fixing block. The lifting chamber is provided on the side wall of the motor chamber. A second motor is provided in the motor chamber. A reel device is provided on the driving end of the second motor. The reel device is provided in the lifting chamber. An endless chain is provided on the reel device.

[0007] Preferably, a protective groove is provided on the first fixing block. The endless chain is movably arranged in the protective groove. A first guiding roller is rotatably arranged in the protective groove. The endless chain is arranged on the first guiding roller. A pair of emergency braking chambers are provided in the protective groove. A multi-stage electric telescopic cylinder is provided in the emergency braking chamber. A braking block is provided on the telescopic end of the multi-stage electric telescopic cylinder. The braking block is movably arranged on the endless chain.

[0008] Preferably, a photoelectric switch and a reflector are provided in the protective groove. A second fixing block is movably arranged on the endless chain. A second guiding roller is rotatably arranged in the second fixing block. The endless chain is arranged on the second guiding roller. A lifting hook is rotatably arranged on the lower wall surface of the second fixing block.

[0009] Preferably, a cooling chamber is provided on the motor chamber and the lifting chamber. A number of third motors are provided in the cooling chamber. A fan is provided on the driving end of the third motor. A number of first ventilation holes are provided on the upper wall surface of the cooling chamber. A number of second ventilation holes are provided on the upper wall surface of the motor chamber and the lifting chamber.

[0010] Preferably, a third fixing block is provided on the lower wall surface of the first fixing block. The endless chain is fixedly installed on the third fixing block. A third guiding roller is provided on the protective groove. The endless chain is arranged on the third guiding roller. A controller is provided on the first fixing block. A protective cover is provided on the protective groove.

[0011] Beneficial effects

[0012] An electric hoist for delivering solid materials provided by the present utility model has the following beneficial effects:

[0013] In this design, by driving the second motor to rotate, the drum device is driven to rotate, and then the endless chain is lifted and lowered at a constant speed. The laser emitted by the photoelectric switch is reflected by the reflector and received by the photoelectric switch, so as to count the endless chain between the photoelectric switch and the reflector. When a fault occurs that the endless chain disengages from the drum device or the motor shaft idles due to a malfunction, the counted value changes significantly. By driving the multi-stage electric telescopic cylinder to expand and contract, the brake block is pressed against the endless chain for deceleration braking, which can prevent the heavy object from falling to the ground quickly and avoid the situation of the heavy object causing harm to the staff near the electric hoist.

[0014] In this design, by driving the third motor to rotate, the fan is driven to rotate to cool the motor compartment and the lifting compartment, preventing the temperature of the motor and the endless chain from rising when the electric hoist is used for a long time, thereby increasing the service life of the motor and the endless chain.

[0015] The first fixing block of this design is slidably installed on the support beam through a slider, and the second motor and the drum device are both above the support beam, which can increase the lifting stroke of the goods. Description of the Drawings

[0016] Figure 1 is a schematic diagram of the whole of the present utility model.

[0017] Figure 2 is of the present utility model Figure 1 is a partial enlarged view of part A in

[0018] Figure 3 is a schematic diagram of the whole of the present utility model.

[0019] Figure 4 is of the present utility model Figure 3 is a partial enlarged view of part B in

[0020] Figure 5 is a schematic diagram of the fan of the present utility model.

[0021] Figure 6 is a schematic diagram of the cooling compartment of the present utility model.

[0022] In the figure: 1. Lifting chamber; 2. Cooling chamber; 3. Third motor; 4. Fan; 5. Reel device; 6. Motor chamber; 7. Second motor; 8. Support beam; 9. First fixed block; 10. Protective groove; 11. Controller; 12. Second fixed block; 13. Lifting hook; 14. Third guide roller; 15. Brake block; 16. Multi-stage electric telescopic cylinder; 17. Emergency brake chamber; 18. Slide; 19. Photoelectric switch; 20. Ring chain; 21. Second guide roller; 22. Protective cover; 23. Slider; 24. Third fixed block; 25. Second ventilation hole; 26. First ventilation hole; 27. First motor; 28. Driving wheel; 29. Second support block; 30. Reflector; 31. First guide roller. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] See also Figures 1-6 The utility model provides a technical solution: an electric hoist for feeding solid materials, comprising a support beam 8 and a first fixed block 9, a groove is provided on the first fixed block 9, a pair of sliders 23 are provided on the groove of the first fixed block 9, a pair of slide grooves 18 are provided on the support beam 8, the first fixed block 9 is slidably installed on the support beam 8 through the sliders 23, a pair of second support blocks 29 are provided on the groove of the first fixed block 9, a plurality of first motors 27 are provided on the second support block 29, a driving wheel 28 is provided on the driving end of the first motor 27, and the driving wheel 28 is movably provided on the lower wall surface of the support beam 8, and a lifting device is provided on the upper wall surface of the first fixed block 9;

[0025] The first motor 27 is driven to rotate, which drives the driving wheel 28 to rotate, thereby moving the first fixing block 9.

[0026] This embodiment is further configured such that the lifting device includes a motor bin 6 and a lifting bin 1, the lifting bin 1 and the motor bin 6 are arranged on the upper wall surface of the first fixed block 9, the lifting bin 1 is arranged on the side wall of the motor bin 6, a second motor 7 is arranged in the motor bin 6, a reel device 5 is provided on the driving end of the second motor 7, the reel device 5 is arranged in the lifting bin 1, and an endless chain 20 is provided on the reel device 5;

[0027] The endless chain 20 is wound on the reel device 5;

[0028] Drive the second motor 7 to rotate, drive the reel device 5 to rotate, and then lift and lower the endless chain 20.

[0029] In this embodiment, it is further set that a protective groove 10 is provided on the first fixing block 9, the endless chain 20 is movably arranged in the protective groove 10, a first guide roller 31 is rotatably arranged in the protective groove 10, the endless chain 20 is arranged on the first guide roller 31, a pair of emergency braking chambers 17 are arranged in the protective groove 10, a multi-stage electric telescopic cylinder 16 is arranged in the emergency braking chamber 17, a braking block 15 is arranged on the telescopic end of the multi-stage electric telescopic cylinder 16, and the braking block 15 is movably arranged on the endless chain 20;

[0030] Drive the multi-stage electric telescopic cylinder 16 to expand and contract, so that the braking block 15 is movably arranged on the endless chain 20, which can prevent heavy objects from falling to the ground quickly and avoid the situation that heavy objects cause harm to the staff near the electric hoist.

[0031] In this embodiment, it is further set that a photoelectric switch 19 and a reflector 30 are arranged in the protective groove 10, a second fixing block 12 is movably arranged on the endless chain 20, a second guide roller 21 is rotatably arranged in the second fixing block 12, the endless chain 20 is arranged on the second guide roller 21, and a lifting hook 13 is rotatably arranged on the lower wall surface of the second fixing block 12;

[0032] The laser emitted by the photoelectric switch 19 is reflected by the reflector 30 and then received by the photoelectric switch 19, so that the endless chain 20 between the photoelectric switch 19 and the reflector 30 can be counted.

[0033] In this embodiment, it is further set that a cooling chamber 2 is arranged on the motor chamber 6 and the lifting chamber 1, a plurality of third motors 3 are arranged in the cooling chamber 2, a fan 4 is arranged on the driving end of the third motor 3, a plurality of first ventilation holes 26 are arranged on the upper wall surface of the cooling chamber 2, and a plurality of second ventilation holes 25 are arranged on the upper wall surfaces of the motor chamber 6 and the lifting chamber 1;

[0034] Drive the third motor 3 to rotate, drive the fan to rotate, and cool the second motor 7 in the motor chamber 6 and the endless chain 20 in the lifting chamber 1 through the second ventilation holes 25. When the electric hoist is used for a long time, prevent the situation that the service life of the second motor 7 and the endless chain 20 is reduced due to excessive temperature.

[0035] In this embodiment, it is further set that a third fixing block 24 is arranged on the lower wall surface of the first fixing block 9, the annular chain 20 is fixedly installed on the third fixing block 24, a third guiding roller 14 is arranged on the protection groove 10, the annular chain 20 is arranged on the third guiding roller 14, a controller 11 is arranged on the first fixing block 9, and a protective cover 22 is arranged on the protection groove 10;

[0036] The third guiding roller 14 can reduce the friction between the annular chain 20 and the first fixing block 9, thereby increasing the service life of the annular chain 20;

[0037] The protective cover 22 is arranged on the protection groove 10, which can prevent the annular chain 20 from disengaging from the protection groove 10.

[0038] Embodiment: When the electric hoist is installed, the first fixing block 9 is slidably installed on the support beam 8 through a slider 23, the annular chain 20 is wound around the drum device 5, one end of the annular chain 20 is passed through the protection groove 10 and fixedly installed on the third fixing block 24, the second fixing block 12 is arranged on the annular chain 20 through a second guiding roller 21. When the electric hoist is in use, the second motor 7 is driven to rotate, driving the drum device 5 to rotate, so that the annular chain 20 moves up and down, driving the second fixing block 12 to move up and down, and further driving the lifting hook 13 to move up and down for lifting solid materials. The second motor 7 and the drum device 5 are both above the support beam 8, which can increase the lifting stroke of the goods. The first motor 27 is driven to rotate, driving the driving wheel 28 to rotate, and further moving the first fixing block 9, and then moving the solid materials. The third motor 3 is driven to rotate, driving the fan to rotate, and cooling the second motor 7 in the motor chamber 6 and the annular chain 20 in the lifting chamber 1 through the second ventilation hole 25. When the electric hoist is used for a long time, it can prevent the situation that the service life of the second motor 7 and the annular chain 20 is reduced due to excessive temperature. The laser emitted by the photoelectric switch 19 is reflected by the reflector 30 and then received by the photoelectric switch 19, which can count the annular chain 20 between the photoelectric switch 19 and the reflector 30. When a fault occurs in the electric hoist, such as the annular chain 20 disengaging from the drum device 5 or the rotation shaft of the second motor 7 malfunctioning and idling, the moving speed of the annular chain 20 increases, and the counted value of the photoelectric switch 19 changes significantly. The multi-stage electric telescopic cylinder 16 is driven to expand and contract, so that the brake block 15 is movably arranged on the annular chain 20, and the annular chain 20 is decelerated and braked by pressing the annular chain 20 with the brake block 15, which can prevent the heavy object from falling quickly and avoid the situation of harming the staff near the electric hoist.

[0039] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An electric hoist for discharging solid materials, comprising a support beam (8) and a first fixing block (9), characterized in that, A groove is provided on the first fixing block (9). A pair of sliders (23) are provided on the groove of the first fixing block (9). A pair of chutes (18) are provided on the support beam (8). The first fixing block (9) is slidably mounted on the support beam (8) through the sliders (23). A pair of second support blocks (29) are provided on the groove of the first fixing block (9). A number of first motors (27) are provided on the second support blocks (29). A drive wheel (28) is provided on the drive end of the first motor (27). The drive wheel (28) is movably arranged on the lower wall surface of the support beam (8). A lifting device is provided on the upper wall surface of the first fixing block (9).

2. The electric hoist for feeding solid materials according to claim 1, wherein The lifting device includes a motor housing (6) and a lifting housing (1). The lifting housing (1) and the motor housing (6) are provided on the upper wall surface of the first fixing block (9). The lifting housing (1) is provided on the side wall of the motor housing (6). A second motor (7) is provided in the motor housing (6). A drum device (5) is provided on the drive end of the second motor (7). The drum device (5) is provided in the lifting housing (1). An endless chain (20) is provided on the drum device (5).

3. An electric hoist for discharging solid materials according to claim 2, characterized in that, A protective groove (10) is provided on the first fixing block (9). The endless chain (20) is movably arranged in the protective groove (10). A first guide roller (31) is rotatably arranged in the protective groove (10). The endless chain (20) is arranged on the first guide roller (31). A pair of emergency brake housings (17) are provided in the protective groove (10). A multi-stage electric telescopic cylinder (16) is provided in the emergency brake housing (17). A brake block (15) is provided on the telescopic end of the multi-stage electric telescopic cylinder (16). The brake block (15) is movably arranged on the endless chain (20).

4. An electric hoist for delivering solid materials according to claim 3, characterized in that, A photoelectric switch (19) and a reflector (30) are provided in the protective groove (10). A second fixing block (12) is movably arranged on the endless chain (20). A second guide roller (21) is rotatably arranged in the second fixing block (12). The endless chain (20) is arranged on the second guide roller (21). A lifting hook (13) is rotatably arranged on the lower wall surface of the second fixing block (12).

5. An electric hoist for discharging solid materials according to claim 4, characterized in that, A cooling housing (2) is provided on the motor housing (6) and the lifting housing (1). A number of third motors (3) are provided in the cooling housing (2). A fan (4) is provided on the drive end of the third motor (3). A number of first ventilation holes (26) are provided on the upper wall surface of the cooling housing (2). A number of second ventilation holes (25) are provided on the upper wall surface of the motor housing (6) and the lifting housing (1).

6. An electric hoist for delivering solid materials according to claim 5, characterized in that, A third fixing block (24) is provided on the lower wall surface of the first fixing block (9), the annular chain (20) is fixedly installed on the third fixing block (24), a third guiding roller (14) is provided on the protective groove (10), the annular chain (20) is arranged on the third guiding roller (14), a controller (11) is provided on the first fixing block (9), and a protective cover (22) is provided on the protective groove (10).

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