Explosion-proof electric single-beam bridge crane for clean room

Abstract

The utility model discloses an explosion-proof electric single-beam bridge crane for a clean room, and relates to the technical field of bridge cranes, in particular to the explosion-proof electric single-beam bridge crane for the clean room, which comprises a main beam and a crown block, the crown block is arranged at the bottom of the main beam in a sliding manner, the main beam is of an I-shaped structure, and two sides of the I-shaped bottom of the main beam are respectively provided with an anti-falling plate. Two brake assemblies are fixedly mounted at the bottom of the crown block; a driving motor, two driving gears, two driven gears, two rollers, two explosion-proof motors, two traction ropes and two pulleys are arranged in the crown block. The two output ends of the driving motor rotate in the same direction to drive the driving gear and the driven gear on the two sides to rotate, the idler wheels on the two sides rotate synchronously to drive the crown block to move through connection of the driven gear and the idler wheels, the idler wheels moving on the main beam can be started and stopped at the same time, and it is guaranteed that the crane runs stably on the main beam; and the phenomena of rail gnawing and derailing are avoided.

Description

Technical Field

[0001] This utility model relates to the field of bridge crane technology, specifically a cleanroom explosion-proof electric single-girder bridge crane. Background Technology

[0002] A single-girder bridge crane is a lifting device that spans across workshops, warehouses, and material yards for material handling. Because its two ends rest on tall concrete pillars or metal supports, it resembles a bridge. The bridge frame of a single-girder bridge crane runs longitudinally along tracks laid on elevated structures on both sides, making full use of the space beneath the bridge frame for material handling without being obstructed by ground equipment. It is the most widely used and numerous type of lifting machinery.

[0003] During operation, bridge cranes often experience axial movement or axial misalignment due to various reasons, causing the wheels to come into contact with and rub against the sides of the rails. This leads to wear on the wheel flanges and side wear on the rails, a phenomenon known as rail biting. This can cause serious economic losses and generate a lot of dust. However, cleanrooms such as aerospace precision workshops, sterile pharmaceutical workshops, and food manufacturing plants have high requirements for the working environment. Therefore, a cleanroom explosion-proof electric single-girder bridge crane with anti-rail biting features is extremely important. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a cleanroom explosion-proof electric single-girder bridge crane, which solves the problems mentioned in the background art.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model is implemented through the following technical solution: it includes a main beam and a crane, the crane being slidably installed at the bottom of the main beam, the main beam having an "I"-shaped structure, anti-detachment plates being provided on both sides of the bottom of the "I"-shaped main beam, and two braking components being fixedly installed at the bottom of the crane.

[0008] The overhead crane is equipped with a drive motor, two main gears, two driven gears, two rollers, two explosion-proof motors, two traction ropes, and two pulleys. The two main gears mesh with the driven gears respectively. One end of each of the two rollers is fixedly connected to a driven gear. The two pulleys are fixedly installed on the left and right sides of the bottom of the inner side of the overhead crane. The two explosion-proof motors are fixedly installed between the two pulleys inside the overhead crane. A traction rope is connected to the outer surface of the output end of each of the two explosion-proof motors.

[0009] The brake assembly further comprises two rotating motors, two limiting cams and two concave blocks, one limiting cam is fixedly installed at the output end of each rotating motor, and the two concave blocks are fixedly installed at the left and right sides of the bottom of the crown block.

[0010] Optionally, the thickness of the roller is less than the distance between the main beam and the anti-off plate, the diameter of the roller is less than the height between the upper bottom surface and the lower top surface of the main beam, and the crown block is slidably installed at the bottom of the main beam through the roller.

[0011] Optionally, the driving motor is a double-rotor motor, and the two output ends of the driving motor are fixedly connected with the two main gears respectively.

[0012] Optionally, wire holes are formed at the left and right sides of the bottom of the crown block, the inner diameter of the wire hole is greater than the outer diameter of the traction rope, and the traction rope is slidably connected in the wire hole at the bottom of the crown block.

[0013] Optionally, a connecting ring is fixedly installed at the front and back of the limiting cam, and the outer radius of the connecting ring is greater than the distance between the limiting cam shaft and the concave block.

[0014] Optionally, a through groove is formed at the bottom of the crown block, the inner surface of the through groove is matched with the outer surface of the connecting ring, and one side of the connecting ring is rotatably connected in the through groove at the bottom of the crown block.

[0015] Optionally, the height of the concave block center point is equal to the height of the limiting cam rotation origin.

[0016] Optionally, the distance between the two connecting rings on the limiting cam is greater than the outer diameter of the traction rope.

[0017] The utility model provides a kind of clean room explosion-proof electric single-beam bridge crane, with the following beneficial effects:

[0018] 1, the clean room explosion-proof electric single-beam bridge crane, by driving motor double output end same direction rotation drives both sides main gear and from gear to rotate, utilize from gear and the connection of roller, make both sides roller synchronous rotation drive crown block to move, so that the roller on main beam can be started simultaneously stop, guarantee crane to run smoothly on main beam, avoid the phenomenon of gnawing rail, derailment.

[0019] 2, the clean room explosion-proof electric single-beam bridge crane, by the cooperation of concave block and connecting ring on limiting cam, make the traction rope that crown block is placed under in limiting cam, then utilize rotating motor to drive the rotation of limiting cam, make the convex part of cam top against traction rope and the concave surface of concave block contact, hold traction rope, prevent traction rope from moving downward under the action of gravity of goods, while reducing the load of explosion-proof motor. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the overall internal structure of this utility model;

[0022] Figure 3 This is a schematic diagram of the overhead crane cable outlet position structure of this utility model;

[0023] Figure 4 This is a schematic diagram of the internal structure of the overhead crane of this utility model;

[0024] Figure 5 This is a schematic diagram of the connection structure between the braking assembly and the overhead crane of this utility model;

[0025] Figure 6 This is a schematic diagram of the braking assembly of this utility model.

[0026] In the diagram: 1. Main beam; 2. Overhead crane; 201. Drive motor; 202. Main gear; 203. Driven gear; 204. Roller; 205. Explosion-proof motor; 206. Traction rope; 207. Pulley; 3. Anti-detachment plate; 4. Braking assembly; 401. Rotating motor; 402. Limiting cam; 403. Concave block; 404. Connecting ring. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0028] Example

[0029] Please see Figures 1 to 6 The present invention provides a technical solution including a main beam 1 and a crane 2. The crane 2 is slidably installed at the bottom of the main beam 1. The main beam 1 has an "I" shape. Anti-derailment plates 3 are provided on both sides of the bottom of the "I" shape of the main beam 1. The height of the anti-derailment plates 3 is less than the radius of the roller 204, so that the anti-derailment plates 3 can prevent the roller 204 from derailing and do not affect the connection between the roller 204 and the driven gear 203 when the roller moves. Two braking components 4 are fixedly installed at the bottom of the crane 2.

[0030] The inside of the crown block 2 is provided with a driving motor 201, two main gears 202, two from gears 203, two rollers 204, two explosion-proof motors 205, two traction ropes 206, two pulleys 207, the two main gears 202 are respectively engaged with the from gears 203, one end of the two rollers 204 is respectively fixedly connected with one from gear 203, the two pulleys 207 are respectively fixedly installed on the left and right sides of the inside bottom of the crown block 2, the two explosion-proof motors 205 are fixedly installed between the two pulleys 207 inside the crown block 2, the height of the pulley 207 is lower than the height of the explosion-proof motor 205, the pulley 207 can reduce the friction between the traction rope 206 and the bottom outlet hole of the crown block 2, increase the service life of the traction rope 206, the outer surface of the output end of the two explosion-proof motors 205 is respectively connected with one traction rope 206, the output end of the two explosion-proof motors 205 is fixedly connected with a winding wheel, the two traction ropes 206 are respectively wound on the two winding wheels, and the rotating directions of the two explosion-proof motors 205 are opposite.

[0031] The brake assembly 4 further comprises two rotating motors 401, two limiting cams 402 and two concave blocks 403, the output end of the two rotating motors 401 is respectively fixedly installed with one limiting cam 402, the rotating directions of the two rotating motors 401 driving the limiting cam 402 are opposite, the two concave blocks 403 are respectively fixedly installed on the left and right sides of the bottom outside of the crown block 2, and the two limiting cams 402 are between the two concave blocks 403.

[0032] Specifically, the two-side main gears 202 and the from gears 203 are driven to rotate by the same direction rotation of the double output ends of the driving motor 201, the two-side rollers 204 are synchronously driven to rotate by the connection of the from gears 203 and the rollers 204, the crown block 2 is moved, the rollers 204 moving on the main beam 1 can be simultaneously started and stopped, the smooth operation of the crane on the main beam 1 is guaranteed, and the phenomena of biting rail and derailing are avoided; the traction rope 206 placed on the crown block 2 is between the concave block 403 and the limiting cam 402 by the cooperation of the concave block 403 and the connecting ring 404 on the limiting cam 402, then the rotation of the limiting cam 402 is driven by the rotating motor 401, the convex part of the cam is in contact with the concave surface of the concave block 403 by pressing the traction rope 206, the traction rope 206 is clamped, the traction rope 206 is prevented from moving downward by the gravity of the goods, and the load of the explosion-proof motor 205 is reduced.

[0033] Please refer to FIGS. 1 to Figure 2 The thickness of the roller 204 is less than the distance between the main beam 1 and the anti-off plate 3, the diameter of the roller 204 is less than the height between the upper bottom surface and the lower top surface of the main beam 1, and the crown block 2 is slidably installed on the bottom outside of the main beam 1 through the roller 204.

[0034] Specifically, through the connection of the roller 204 and the main beam 1, the rotation of the roller 204 driven by the driving motor 201 can enable the crab 2 to move on the main beam 1.

[0035] Please refer to Figs. 2 to Figure 4 The driving motor 201 is a double-rotor motor, and the two output ends of the driving motor 201 are fixedly connected with the two main gears 202 respectively.

[0036] Specifically, by utilizing the synchronous rotation feature of the bidirectional output ends of the driving motor 201, cooperating with the meshing of the main gears 202 and the pinion gears 203 and the connection of the pinion gears 203 and the rollers 204, the rollers 204 moving on the main beam 1 can be started and stopped simultaneously, thereby ensuring the smooth operation of the crane on the main beam 1.

[0037] Please refer to Figs. 3 to Figure 6 The inside bottom of the crab 2 is provided with two wire outlet holes on the left and right sides respectively, and the inner diameter of the wire outlet hole is greater than the outer diameter of the traction rope 206.

[0038] The two sides of the limiting cam 402 are fixedly provided with connecting rings 404 respectively, and the outer radius of the connecting ring 404 is greater than the distance between the shaft center of the limiting cam 402 and the concave block 403.

[0039] The bottom of the crab 2 is provided with a through groove, and the inner surface of the through groove is matched with the outer surface of the connecting ring 404.

[0040] The height of the concave center point of the concave block 403 is equal to the height of the rotation origin of the limiting cam 402.

[0041] The distance between the two connecting rings 404 on the limiting cam 402 is greater than the outer diameter of the traction rope 206.

[0042] Specifically, the rotation of the limiting cam 402 driven by the rotating motor 401 enables the convex part of the limiting cam 402 to abut against the concave surface of the concave block 403 and contact the traction rope 206, thereby clamping the traction rope 206 and preventing the traction rope 206 from moving downward by itself under the gravity of the goods.

[0043] In use, firstly, the driving motor 201 is started to work to drive the two main gears 202 to rotate, the meshing of the main gears 202 and the driven gears 203 and the connection of the driven gears 203 and the rollers 204 enable the driving motor 201 to drive the rollers 204 to roll in the main beam 1, so that the crown block 2 moves on the main beam 1, the rollers 204 moving on the main beam 1 can be started and stopped simultaneously, the crane is ensured to run stably on the main beam 1, the phenomenon of biting rails is avoided, then the rotation of the explosion-proof motor 205 drives the winding wheel to rotate to release the two traction ropes 206, the traction ropes 206 pass through the wire outlet holes at the bottom of the crown block 2 and are between the limiting cams 402 and the recessed blocks 403 of the brake assembly 4, when descending to the corresponding height, the explosion-proof motor 205 stops rotating, the rotating motor 401 drives the limiting cam 402 to rotate, the convex part of the cam is in contact with the recessed surface of the recessed block 403 and clamps the traction rope 206, the traction rope 206 is prevented from descending by itself under the action of the gravity of the goods, and the load of the explosion-proof motor 205 is reduced.

[0044] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A cleanroom explosion-proof electric single-girder bridge crane, comprising a main beam (1) and a crane (2), characterized in that: The overhead crane (2) is slidably installed at the bottom of the main beam (1). The main beam (1) has an "I" shape. Anti-detachment plates (3) are provided on both sides of the bottom of the "I" shape of the main beam (1). Two braking components (4) are fixedly installed at the bottom of the overhead crane (2). The overhead crane (2) is equipped with a drive motor (201), two main gears (202), two driven gears (203), two rollers (204), two explosion-proof motors (205), two traction ropes (206), and two pulleys (207). The two main gears (202) mesh with the driven gears (203) respectively. One end of each of the two rollers (204) is fixedly connected to a driven gear (203). The two pulleys (207) are fixedly installed on the left and right sides of the bottom of the inner side of the overhead crane (2). The two explosion-proof motors (205) are fixedly installed between the two pulleys (207) inside the overhead crane (2). The outer surface of the output end of each of the two explosion-proof motors (205) is connected to a traction rope (206). The braking assembly (4) also includes two rotating motors (401), two limiting cams (402) and two recesses (403). The output ends of the two rotating motors (401) are respectively fixedly installed with a limiting cam (402), and the two recesses (403) are respectively fixedly installed on the left and right sides of the bottom of the outer side of the crane (2).

2. The cleanroom explosion-proof electric single-girder bridge crane according to claim 1, characterized in that: The thickness of the roller (204) is less than the distance between the main beam (1) and the anti-detachment plate (3), and the diameter of the roller (204) is less than the height between the upper bottom surface and the lower top surface of the main beam (1). The crane (2) is slidably installed on the outer side of the bottom of the main beam (1) through the roller (204).

3. The cleanroom explosion-proof electric single-girder bridge crane according to claim 1, characterized in that: The drive motor (201) is a dual-rotor motor, and the two output ends of the drive motor (201) are fixedly connected to two main gears (202) respectively.

4. The cleanroom explosion-proof electric single-girder bridge crane according to claim 1, characterized in that: The bottom inner side of the overhead crane (2) is provided with cable outlet holes on both the left and right sides. The inner diameter of the cable outlet hole is larger than the outer diameter of the traction rope (206). The traction rope (206) is slidably connected to the cable outlet hole at the bottom of the overhead crane (2).

5. A cleanroom explosion-proof electric single-girder bridge crane according to claim 1, characterized in that: Connecting rings (404) are fixedly installed on both the front and rear sides of the limiting cam (402), and the outer radius of the connecting rings (404) is greater than the distance between the axis of the limiting cam (402) and the concave block (403).

6. The cleanroom explosion-proof electric single-girder bridge crane according to claim 1, characterized in that: The bottom of the overhead crane (2) is provided with a through groove, the inner surface of which is adapted to the outer surface of the connecting ring (404), and one side of the connecting ring (404) is rotatably connected to the through groove at the bottom of the overhead crane (2).

7. A cleanroom explosion-proof electric single-girder bridge crane according to claim 1, characterized in that: The height of the center point of the recess (403) is equal to the height of the rotation origin of the limiting cam (402).

8. A cleanroom explosion-proof electric single-girder bridge crane according to claim 1, characterized in that: The distance between the two connecting rings (404) on the limiting cam (402) is greater than the outer diameter of the traction rope (206).

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