Explosion-proof electric chain hoist for crane

Abstract

The utility model discloses an explosion-proof electric chain hoist for a crane, which relates to the technical field of electric hoists and comprises an electric chain hoist main body used for assisting the crane in safely hoisting and carrying heavy objects, and an air supply cooling mechanism arranged at one end of the electric chain hoist main body. The explosion-proof electric chain hoist for the crane is used for conveying air to cool a main body of the electric chain hoist and isolating dust, inflammable gas and the like in the environment, and when the explosion-proof electric chain hoist for the crane works in the environment containing inflammable and explosive substances through the air supply cooling mechanism arranged at one end of the explosion-proof electric chain hoist, temperature control of equipment is particularly important. The cooling mechanism can help to maintain the motor and other key components within a safe working temperature range, the risk of fire or explosion caused by overheating is reduced, meanwhile, the equipment operates more stably at a proper temperature, faults can be reduced, and the efficiency and reliability of continuous operation are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to electric hoist technical field, concretely is a kind of anti-explosion ring chain electric hoist for crane. BACKGROUND

[0002] Anti-explosion ring chain electric hoist for crane is a kind of hoisting equipment specially designed in potentially explosive environment. Its main role is to safely lift and transport heavy objects in the workplace containing flammable and explosive substances.

[0003] The utility model discloses an anti-explosion ring chain electric hoist, including the electric control box, main body box and power box that connect gradually, be equipped with the first fixed plate and the second fixed plate of opposite arrangement on main body box, be equipped with long spline shaft in the mounting hole of first fixed plate and second fixed plate, the end of long spline shaft is equipped with tooth slot, tooth slot is connected with clutch assembly;Long spline shaft is also equipped with hoisting sprocket, one end of hoisting sprocket is equipped with transmission gear, hoisting sprocket is also equipped with the convex slot between first fixed plate and second fixed plate, hoisting chain is wound in convex slot, the end of hoisting chain is connected with lower lifting hook, hoisting chain is equipped with buffer spring connected with lower lifting hook, the end of buffer spring away from lower lifting hook is connected with top block, the limit switch is equipped under the inlet and outlet chain mouth of main body box.The utility model discloses an anti-explosion ring chain electric hoist with the above structure, electric hoist can stop automatically after lifting hook rises to the height upper limit, guarantees the safety of electric hoist and hoisting article.

[0004] As shown in the above device, the anti-explosion ring chain electric hoist of the prior art, when operating in a working environment with dust and flammable gas, if the electric control box, main body box and power box produce sparks due to failure or the hoisting chain produces sparks due to friction during operation, when the sparks come into contact with dust, flammable gas and other substances, accidents are likely to occur, which has great risk. UTILITY MODEL CONTENTS

[0005] In view of the deficiencies of the prior art, the utility model provides an anti-explosion ring chain electric hoist for crane, which solves the above problems.

[0006] To achieve the above purpose, the utility model is implemented by the following technical solutions: an anti-explosion ring chain electric hoist for crane, comprising:

[0007] The ring chain electric hoist body is used to assist the crane in safely lifting and transporting heavy objects.

[0008] The air supply and cooling mechanism is arranged at one end of the ring chain electric hoist body and used to supply air to the ring chain electric hoist body for cooling and to isolate the environment from dust, flammable gas and the like.

[0009] The protection mechanism is arranged at the bottom end of the ring chain electric hoist body, and is used for preventing the explosion-proof chain from contacting dust and flammable gas in the air.

[0010] Preferably, the air supply cooling mechanism comprises a mounting box arranged at one end of the ring chain electric hoist body, a ventilation hole is formed in the outer wall of the mounting box, a maintenance door is hinged to the inner wall of the mounting box, a handle is fixedly connected to the outer wall of the maintenance door, a sealing ring is arranged in the inner wall of the mounting box, a hinge groove is formed in the outer wall of the sealing ring, a filter assembly is arranged in the inner wall of the mounting box, and a motor is fixedly connected to the inner wall of the mounting box.

[0011] Preferably, the filter assembly comprises a mounting box, a ventilation groove is formed in the outer wall of the mounting box, a filter plate is fixedly connected to the inner wall of the mounting box, an activated carbon layer is arranged at one end of the filter plate, and filter cotton is arranged at the other end of the activated carbon layer.

[0012] Preferably, the protection mechanism comprises a movable rotating plate arranged at the low end of the ring chain electric hoist body, a threaded connector is arranged at one end of the movable rotating plate, a connecting ring plate is arranged at the other end of the movable rotating plate, a first protection pipe is fixedly connected to the other end of the connecting ring plate, a sealing connecting ring is arranged at one end of the first protection pipe, a second protection pipe is arranged at one end of the sealing connecting ring, and a sliding rail is arranged in the inner wall of the second protection pipe.

[0013] Preferably, one end of the ring chain electric hoist body is fixedly connected with a sleeve plate, a dust screen is arranged at the other end of the sleeve plate, and a connecting ring is fixedly connected to the top end of the ring chain electric hoist body.

[0014] Preferably, a connecting ring seat is arranged at the bottom end of the ring chain electric hoist body, the ring chain electric hoist body is connected with the protection mechanism through the connecting ring seat, the connecting ring seat is connected with a mounting seat through the protection mechanism, and a hook is arranged at the bottom end of the mounting seat.

[0015] Beneficial effects

[0016] The utility model provides a kind of explosion-proof ring chain electric hoist for crane.Compared with prior art, it has the following beneficial effects:

[0017] 1, the explosion-proof ring chain electric hoist for crane is cooled by the air supply cooling mechanism arranged at one end, which is particularly important for temperature control of the equipment when working in an environment containing flammable and explosive substances. The cooling mechanism can help maintain the motor and other critical components within a safe operating temperature range, reducing the risk of fire or explosion caused by overheating. At the same time, the equipment operates more stably at an appropriate temperature, which can reduce the occurrence of faults and improve the efficiency and reliability of continuous operation.

[0018] 2、The explosion-proof ring chain electric hoist for the crane is provided with a protection mechanism at the bottom end, and the protection pipe can serve as a barrier in the flammable and explosive environment, reduces the risk of contact between sparks or high-temperature metal fragments and flammable substances in the environment, and reduces the possibility of accidents. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a whole structure schematic view of the utility model;

[0020] Figure 2 It is a whole structure top view of the utility model;

[0021] Figure 3 It is a schematic view of the air supply cooling mechanism of the utility model;

[0022] Figure 4 It is a schematic view of the filter assembly of the utility model;

[0023] Figure 5 It is a schematic view of the protection mechanism of the utility model.

[0024] In the drawing: 1, ring chain electric hoist main body; 2, connecting ring seat; 3, protection mechanism; 31, movable rotating plate; 32, threaded connection head; 33, connecting ring plate; 34, first protection pipe; 35, sealing connecting ring; 36, second protection pipe; 37, slide rail; 4, mounting seat; 5, hook; 6, dust screen; 7, cover plate; 8, air supply cooling mechanism; 81, mounting box; 82, ventilation hole; 83, access door; 84, handle; 85, sealing ring; 86, hinged groove; 87, filter assembly; 871, mounting box; 872, air passage; 873, filter plate; 874, activated carbon layer; 875, filter cotton; 88, motor; 89, air supply fan; 9, connecting frame; 10, explosion-proof chain. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0026] Referring to Figures 1-5 The utility model provides the following two technical solutions:

[0027] The first embodiment is a kind of explosion-proof ring chain electric hoist for crane, including: ring chain electric hoist body 1, for assisting crane safe lifting and carrying heavy objects;Air supply cooling mechanism 8 is arranged at one end of ring chain electric hoist body 1, for delivering air cooling for ring chain electric hoist body 1, while isolating dust, flammable gas and the like in environment for it;Protection mechanism 3 is arranged at the bottom end of ring chain electric hoist body 1, for preventing explosion-proof chain 10 from contacting dust, flammable gas in air.

[0028] One end of ring chain electric hoist body 1 is fixedly connected with sleeve plate 7, the other end of sleeve plate 7 is provided with dust screen 6, and the top end of ring chain electric hoist body 1 is fixedly connected with connecting frame 9.

[0029] The bottom end of ring chain electric hoist body 1 is provided with connecting ring seat 2, and ring chain electric hoist body 1 is connected with protection mechanism 3 through connecting ring seat 2, connecting ring seat 2 is connected with mounting seat 4 through protection mechanism 3, and the bottom end of mounting seat 4 is provided with hook 5.

[0030] Air supply cooling mechanism 8 includes mounting box 81, and mounting box 81 is arranged at one end of ring chain electric hoist body 1, ventilation hole 82 is formed in the outer wall of mounting box 81, and maintenance door 83 is hinged in the inner wall of mounting box 81, handle 84 is fixedly connected to the outer wall of maintenance door 83, sealing ring 85 is arranged in the inner wall of mounting box 81, hinged groove 86 is formed in the outer wall of sealing ring 85, filter assembly 87 is arranged in the inner wall of mounting box 81, motor 88 is fixedly connected to the inner wall of mounting box 81, and air supply fan 89 is fixedly connected to one end of motor 88.

[0031] Filter assembly 87 includes mounting box 871, air passage 872 is formed in the outer wall of mounting box 871, filter plate 873 is fixedly connected to the inner wall of mounting box 871, activated carbon layer 874 is arranged at one end of filter plate 873, and filter cotton 875 is arranged at the other end of activated carbon layer 874.

[0032] The explosion-proof ring chain electric hoist for crane is provided with air supply cooling mechanism 8 at one end, and when working in the environment containing flammable and explosive substances, temperature control of the equipment is particularly important.The cooling mechanism can help maintain the motor and other critical components within the safe working temperature range, reduce the risk of fire or explosion caused by overheating, and at the same time, the equipment runs more stably at appropriate temperature, which can reduce faults, improve the efficiency and reliability of continuous operation.

[0033] The second embodiment is mainly different from the first embodiment in that: the protection mechanism 3 includes a movable rotating plate 31, which is arranged at the lower end of the chain electric hoist body 1, and a threaded connector 32 is provided at one end of the movable rotating plate 31, and a connecting ring plate 33 is provided at the other end of the movable rotating plate 31, and a first protection pipe fitting 34 is fixedly connected to the other end of the connecting ring plate 33, and a sealing connecting ring 35 is provided at one end of the first protection pipe fitting 34, and a second protection pipe fitting 36 is provided at one end of the sealing connecting ring 35, and a slide rail 37 is provided on the inner wall of the second protection pipe fitting 36.

[0034] The explosion-proof electric chain hoist for cranes has a protective mechanism 3 provided at its bottom end. In flammable and explosive environments, the protective tube can serve as a barrier to reduce the risk of sparks or high-temperature metal fragments coming into contact with flammable substances in the environment, thereby reducing the possibility of accidents.

[0035] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0036] When the equipment is operated in a space where dust and flammable gas exist, the position of the chain electric hoist body 1 is adjusted by the crane. After the adjustment, the chain electric hoist body 1 is started. As the chain electric hoist body 1 operates, the motor 88 is started, and the operation of the motor 88 drives the supply fan 89 fixed at one end thereof to operate. The supply fan 89 operates to draw air into the installation box 81 through the ventilation holes 82 opened on the outer wall of the installation box 81. Before the air enters the installation box 81 through the ventilation holes 82, it enters the filter assembly 87 provided on the inner wall of the installation box 81. The air enters the installation box 871 after passing through the ventilation groove 872 opened on the outer wall of the installation box 871, and is filtered through the filter plate 873 provided inside the installation box 871 for one layer. After the first layer of filtration, the air enters the activated carbon layer 874 for secondary adsorption filtration. After the secondary adsorption filtration, the air passes through the filter cotton 875 for three layers of filtration. After the three layers of filtration, the air is filtered again. The plate 873 is filtered again, and the air can enter the installation box 81 after filtering again. When the air enters the installation box 81, it can enter the chain electric hoist main body 1 through another filter assembly 87 provided inside the installation box 81 to supply air and cool its components. If the supply fan 89 inside the installation box 81 fails, it can be repaired by opening the maintenance door 83 hinged on the inner wall of the installation box 81. The explosion-proof chain 10 is lowered through the chain electric hoist main body 1. As the explosion-proof chain 10 is lowered and retracted, the second protective pipe 36 extends from the outer wall of the first protective pipe 34 through the internally provided slide rail 37. As the explosion-proof chain 10 is gradually lowered, multiple second protective pipes 36 are also gradually extended, because sealing connecting rings 35 are provided at both ends to prevent dust and flammable gases from entering. The second protective pipe 36 continues to extend as the explosion-proof chain 10 is continuously extended to prevent sparks generated by the friction of the explosion-proof chain 10 from contacting external dust and flammable gases, thereby playing a protective explosion-proof role.

[0037] It should be noted that the relational terms herein, such as first and second, and the like, are used solely to distinguish one from another entity or action without necessarily requiring or implying any actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0038] While the embodiments of the present application have been illustrated and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and alterations can be made therein without departing from the spirit and scope of the application, which is defined by the appended claims and their equivalents.

Claims

1. An explosion-proof electric chain hoist for crane, characterized in that: include: The main body of the electric chain hoist (1) is used to assist the crane in safely lifting and carrying heavy objects; An air supply and cooling mechanism (8), the air supply and cooling mechanism (8) being arranged at one end of the chain electric hoist body (1), and being used for supplying air to cool the chain electric hoist body (1), and at the same time isolating the chain electric hoist body (1) from dust and flammable gases in the environment; A protective mechanism (3) is provided at the bottom end of the electric chain hoist body (1) and is used to prevent the explosion-proof chain (10) from contacting dust and flammable gas in the air.

2. The explosion-proof electric chain hoist for crane according to claim 1, characterized in that: The air supply and cooling mechanism (8) comprises an installation box (81), the installation box (81) is arranged at one end of the chain electric hoist body (1), the outer wall of the installation box (81) is provided with a ventilation hole (82), the inner wall of the installation box (81) is hinged with an inspection door (83), the outer wall of the inspection door (83) is fixedly connected with a handle (84), the inner wall of the installation box (81) is provided with a sealing ring (85), the outer wall of the sealing ring (85) is provided with a hinge groove (86), the inner wall of the installation box (81) is provided with a filter assembly (87), the inner wall of the installation box (81) is fixedly connected with a motor (88), and one end of the motor (88) is fixedly connected with a supply fan (89).

3. The explosion-proof electric chain hoist for crane according to claim 2, characterized in that: The filter assembly (87) includes a mounting box (871), the outer wall of the mounting box (871) is provided with a ventilation groove (872), the inner wall of the mounting box (871) is fixedly connected with a filter plate (873), one end of the filter plate (873) is provided with an activated carbon layer (874), and the other end of the activated carbon layer (874) is provided with filter cotton (875).

4. The explosion-proof electric chain hoist for crane according to claim 1, characterized in that: The protection mechanism (3) includes a movable rotating plate (31), which is arranged at the lower end of the chain electric hoist body (1), one end of the movable rotating plate (31) is provided with a threaded connector (32), the other end of the movable rotating plate (31) is provided with a connecting ring plate (33), the other end of the connecting ring plate (33) is fixedly connected to a first protection pipe (34), one end of the first protection pipe (34) is provided with a sealing connecting ring (35), one end of the sealing connecting ring (35) is provided with a second protection pipe (36), and the inner wall of the second protection pipe (36) is provided with a slide rail (37).

5. The explosion-proof electric chain hoist for crane according to claim 1, characterized in that: One end of the chain electric hoist body (1) is fixedly connected to a sleeve plate (7), the other end of the sleeve plate (7) is provided with a dustproof net (6), and the top end of the chain electric hoist body (1) is fixedly connected to a connection frame (9).

6. The explosion-proof electric chain hoist for crane according to claim 1, characterized in that: The bottom end of the chain electric hoist body (1) is provided with a connecting ring seat (2), the chain electric hoist body (1) is connected to a protective mechanism (3) via the connecting ring seat (2), the connecting ring seat (2) is connected to a mounting seat (4) via the protective mechanism (3), and the bottom end of the mounting seat (4) is provided with a hook (5).

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