European type explosion-proof hoist

Abstract

A European type explosion-proof hoist, including support frame, support frame is equipped with walking mechanism, the support frame on one side of main beam track is equipped with lifting mechanism, the support frame on the other side of main beam track is equipped with electric control system, the lower portion of support frame is equipped with lifting appliance, lifting mechanism includes lifting drum, both ends of lifting drum are assembled on support frame, still include lifting motor, between lifting motor and lifting drum is equipped with speed reducer, lifting drum is driven connection through speed reducer and lifting motor;Electric control system includes box body that can be detachably fixed on support frame, the front end of box body is equipped with circular opening, and the opening is equipped with the cover body that is matched with the opening, the cover body is detachably fixed on the opening of box body through fixed bolt, one side of box body is equipped with aviation joint for cable in and out, box body is equipped with electric control component inside. The utility model discloses simple structure, convenient to use.

Description

Technical Field

[0001] This utility model belongs to the field of crane technology, and in particular relates to a European-style explosion-proof hoist. Background Technology

[0002] Electric hoists are a type of special lifting equipment installed on overhead cranes and gantry cranes. They are characterized by their small size, light weight, simple operation, and ease of use, and are used in industrial and mining enterprises, warehouses, docks, and other places. However, most existing electric hoists are suspended on I-beam rails at the bottom of the main beam, resulting in a relatively light lifting capacity. Furthermore, the controller is exposed, which can easily generate electrical sparks when the motor starts, making them unsuitable for environments with high explosion-proof requirements. In some environments, such as workshops with high dust levels or those containing flammable and explosive gases, the electrical control system must be isolated from the outside air to prevent accidents. Therefore, existing electric hoists have relatively light lifting capacities and low explosion-proof ratings, making them unsuitable for locations with higher explosion-proof requirements. Utility Model Content

[0003] To address the technical problems of lightweight and low explosion-proof rating of electric hoists, this utility model provides a European-style explosion-proof hoist. It includes a support frame with two vertically spaced support plates. Several fixing rods are provided between the support plates, and the support plates are fixedly connected by these rods. The support frame has a traveling mechanism adapted to the main beam track. The traveling mechanism includes two symmetrically arranged rotating shafts between the two support plates. The two ends of the rotating shafts are rotatably mounted on the support plates, and both ends of the two support plates are fixed with traveling wheels. It also includes a traveling motor fixed to the support plates, which is connected to the rotating shafts via a power supply and a PLC controller. Starting the traveling motor drives the traveling wheels to rotate, and the traveling wheels roll along the main beam track, moving the support frame. A lifting mechanism is installed on a support frame on one side of the main beam track, and an electrical control system is installed on a support frame on the other side of the main beam track. A lifting device is located below the support frame and is connected to the lifting mechanism via a wire rope. The lifting mechanism includes a lifting drum, both ends of which are rotatably mounted on the support frame. It also includes a lifting motor fixed to the support frame, with a reducer between the lifting motor and the lifting drum. The lifting drum is connected to the lifting motor via the reducer. The lifting motor is connected to the power supply and electrical control system via a cable. Starting the lifting motor drives the lifting drum to rotate, and the lifting drum moves the hook vertically by pulling the wire rope. The electrical control system includes a detachable housing fixed to the support frame. The front of the housing has a circular opening with a cover that fits the opening. The cover is detachably fixed to the opening of the housing with bolts. One side of the housing has an aviation connector for cable entry and exit. In use, after the cable passes through the aviation connector, it is sealed with glass putty to achieve a seal and isolate it from the outside air. The electrical control components are located inside the housing.

[0004] Preferably, the bottom of the box is provided with a support leg, which can be detachably fixed to the support frame for easy disassembly and fixation of the box; the cover is provided with a cover stop to enhance the sealing performance.

[0005] Preferably, the lifting device includes a hook and a movable pulley assembly. The movable pulley assembly includes a pulley bracket, the hook is fixed to the lower end of the pulley bracket, and a number of movable pulleys are mounted on the upper end of the pulley bracket via a support shaft. The movable pulleys are connected to the lifting mechanism via wire ropes.

[0006] Preferably, the support frame on one side of the hoisting drum is equipped with a hoisting height limiter, which can limit the hoisting height of the hook and improve safety.

[0007] Preferably, the outer surface of the hook is provided with a copper film to enhance wear resistance.

[0008] The above-mentioned approach has the following advantages:

[0009] The enclosure and cover of the electrical control unit protect the electrical components. The aviation connectors facilitate the passage of wiring and can be sealed with glass putty during use to isolate the device from the outside air, enhancing explosion-proof performance. The integrated design of the hoisting drum, hoisting motor, and reducer saves space and makes the structure more compact. The use of a traveling mechanism that moves along both sides of the main beam track improves stability, and the selection of a more powerful hoisting motor can increase the lifting capacity as needed. The outer surface of the hook is covered with a copper film to enhance wear resistance. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0011] Figure 2 This is a schematic diagram of the left-side structure of this utility model;

[0012] Figure 3 This is a top view of the structure of this utility model;

[0013] Figure 4 This is a schematic diagram of the main structure of the enclosure;

[0014] Figure 5 This is a schematic diagram of the left-side structure of the enclosure;

[0015] Figure 6 This is a schematic diagram of the cover structure.

[0016] Reference numerals: 1. Support frame; 2. Main beam track; 3. Traveling mechanism; 4. Lifting mechanism; 5. Electrical control system; 6. Lifting device; 11. Support plate; 12. Fixed rod; 31. Rotating shaft; 32. Traveling wheel; 33. Traveling motor; 41. Lifting drum; 411. Lifting height limiter; 42. Lifting motor; 43. Reducer; 51. Housing; 52. Cover; 521. Cover stop; 53. Fixing bolt; 54. Aviation connector; 55. Outrigger; 61. Moving pulley assembly; 62. Hook; 63. Wire rope. Detailed Implementation

[0017] like Figure 1-6 As shown, a European-style explosion-proof hoist includes a support frame 1, which provides support. The support frame 1 includes two vertically spaced support plates 11, with several fixing rods 12 between the support plates 11 for fixing. The support plates 11 are fixedly connected by the fixing rods 12. The support frame 1 is equipped with a traveling mechanism 3 adapted to the main beam track 2. The traveling mechanism 3 includes two symmetrically arranged rotating shafts 31 between the two support plates 11. The two ends of the rotating shafts 31 are rotatably mounted on the support plates 11, and both ends of the two support plates 11 are fixed with traveling wheels 32. The hoist also includes a traveling motor 33 fixed on the support plates 11. The traveling motor 33 is connected to the rotating shafts 31 for transmission. The traveling motor 33 is connected to a power source and a PLC controller via a cable. When the traveling motor 33 is started, it drives the traveling wheels 32 to rotate. The traveling wheels 32 roll along the main beam track 2 and drive the support frame 1 to move. A lifting mechanism 4 is provided on a support frame 1 on one side of the main beam track 2, and an electrical control system 5 is provided on a support frame 1 on the other side of the main beam track 2. A lifting device 6 is provided below the support frame 1. The lifting device 6 is connected to the lifting mechanism 4 through a wire rope 63. The lifting mechanism 4 includes a lifting drum 41, the two ends of which are rotatably mounted on the support frame 1. It also includes a lifting motor 42 fixed on the support frame 1. A reducer 43 is provided between the lifting motor 42 and the lifting drum 41. The lifting drum 41 is connected to the lifting motor 42 through the reducer 43. The lifting motor 42 is connected to the power supply and the electrical control system 5 through a cable. When the lifting motor 42 is started, the lifting motor 42 drives the lifting drum 41 to rotate. The lifting drum 41 pulls the hook 62 to move in the vertical direction through the wire rope 63. The electrical control system 5 includes a housing 51 that is detachably fixed to the support frame 1. The front end of the housing 51 has a circular opening, and a cover 52 that matches the opening is provided at the opening. The cover 52 is detachably fixed to the opening of the housing 51 by fixing bolts 53. One side of the housing 51 is provided with an aviation connector 54 for cable entry and exit. In use, after the cable passes through the aviation connector 54, it is sealed with glass putty to achieve the function of sealing and isolating the outside air. Electrical control components are provided inside the housing 51.

[0018] Preferably, the bottom end of the box body 51 is provided with a support leg 55, which can be detachably fixed to the support frame 1, making it easy to disassemble and fix the box body 51; the cover body 52 is provided with a cover stop 521 to enhance the sealing performance.

[0019] Preferably, the lifting device 6 includes a hook 62 and a movable pulley assembly 61. The movable pulley assembly 61 includes a pulley bracket. The hook 62 is fixed to the lower end of the pulley bracket. The upper end of the pulley bracket is equipped with several movable pulleys through a support shaft. The movable pulleys are connected to the lifting drum 41 of the lifting mechanism 4 through a wire rope 63.

[0020] Preferably, a lifting height limiter 411 is provided on the support frame 1 on one side of the lifting drum 41. The lifting height limiter 411 can limit the lifting height of the hook 62 and improve safety.

[0021] Preferably, the outer surface of the hook 62 is provided with a copper film to enhance wear resistance.

[0022] Usage process:

[0023] In use, one end of the cable passes through the aviation connector 54 and connects to the control components inside the housing 51. The other end of the cable is connected to the travel motor 33 and the hoisting motor 42. After the cable passes through the aviation connector 54, it is sealed with glass putty to isolate it from the outside air. The travel motor 33 is started, and the travel wheel 32 rolls along the main beam track 2, thereby moving the equipment along the direction of the main beam track 2. When the hook 62 moves above the object to be lifted, the hoisting motor 42 is started. The hoisting motor 42 drives the hoisting drum 41 to rotate. The hoisting drum 41 pulls the hook 62 down to the object and lifts it through the wire rope 63. Then, the hoisting motor 42 is started in reverse, and the hoisting motor 42 pulls the hook 62 and the object up through the hoisting drum 41. Then, the travel motor 33 is started again to adjust the position of the hook 62. After the object is moved to the designated position, the hook is removed.

[0024] In the description of this utility model, it should be understood that the terms "upper", "lower", "left", "right", "top", "bottom", "horizontal", "vertical", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0025] The above embodiments are illustrative of the present invention and are not intended to limit the present invention. Any simple modifications to the present invention are within the protection scope of the present invention.

Claims

1. A European-style explosion-proof hoist, comprising a support frame for supporting the main beam, a traveling mechanism adapted to the main beam track on the support frame, a lifting mechanism on one side of the support frame of the main beam track, an electrical control system on the support frame on the other side of the main beam track, and a lifting device below the support frame, the lifting device being connected to the lifting mechanism via a wire rope, characterized in that: The lifting mechanism includes a lifting drum, both ends of which are rotatably mounted on a support frame. It also includes a lifting motor fixed on the support frame, with a reducer between the lifting motor and the lifting drum. The lifting drum is connected to the lifting motor via the reducer. The electrical control system includes a housing that is detachably fixed on the support frame. The front end of the housing has a circular opening, and a cover that fits the opening is provided at the opening. The cover is detachably fixed to the opening of the housing by fixing bolts. One side of the housing has an aviation connector for cable entry and exit. The housing contains electrical control components.

2. The European-style explosion-proof hoist according to claim 1, characterized in that: The bottom of the box is equipped with support legs, which can be detachably fixed to the support frame; the cover is equipped with a cover stop.

3. The European-style explosion-proof hoist according to claim 1, characterized in that: The support frame includes two vertically spaced support plates, with several fixing rods between the support plates for fixing purposes, and the support plates are fixedly connected by the fixing rods.

4. The European-style explosion-proof hoist according to claim 1, characterized in that: The lifting device includes a hook and a movable pulley assembly. The movable pulley assembly includes a pulley bracket. The hook is fixed to the lower end of the pulley bracket. Several movable pulleys are mounted on the upper end of the pulley bracket via a support shaft. The movable pulleys are connected to the lifting mechanism via wire ropes.

5. The European-style explosion-proof hoist according to claim 1, characterized in that: The walking mechanism includes two symmetrically arranged rotating shafts between two support plates. The two ends of the rotating shafts are rotatably mounted on the support plates, and both ends of the two support plates are fixed with walking wheels. It also includes a walking motor fixed on the support plates, and the walking motor is connected to the rotating shafts for transmission.

6. The European-style explosion-proof hoist according to claim 1, characterized in that: The support frame on one side of the hoisting drum is equipped with a hoisting height limiter.

7. A European-style explosion-proof hoist according to any one of claims 4-6, characterized in that: The outer surface of the hook is covered with a copper film.

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