LH type electric double-beam crane operating in height-limited space

Abstract

The utility model discloses an LH type electric double-beam crane running in a height-limited space, which comprises two symmetrically arranged main beams, two ends of the two main beams are jointly and fixedly provided with end beams respectively, the bottoms of the two end beams are rotatably provided with cart travelling wheels matched with a track on a building wall body, and the cart travelling wheels are fixedly arranged on the two ends of the two main beams. A cart motor for driving the cart travelling wheels to rotate is arranged on each end beam; limiting sliding rails are fixedly arranged on the upper portions of the two main beams, a walking trolley is arranged on the two limiting sliding rails in a common sliding mode, a winch roller is rotationally arranged in the walking trolley, and a winch motor used for driving the winch roller to rotate is horizontally and fixedly arranged on the outer side of the walking trolley. According to the utility model, the overall height of the double-beam crane is effectively reduced, so that the travelling crane can effectively pass through a space with limited height, collision accidents of the double-beam crane are avoided, and the safety performance is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a crane technical field especially relates to a kind of LH type electric double-beam crane operating in height limited space. BACKGROUND

[0002] Double-beam crane is a common bridge crane, also known as travelling crane, widely used in industry, manufacturing, logistics and other fields. Its double-beam design provides stronger load capacity and stability, suitable for heavy load and frequent operation, usually used for heavy material handling, with a lifting range from several tons to hundreds of tons. Moreover, double-beam structure ensures smooth operation of trolley and hoisting mechanism, reduces shaking, can be used in various environments indoors and outdoors, adapts to different working conditions, and supports various operation modes such as ground operation and remote control operation. However, the drive motor of the electric hoist of the double-beam crane at the present stage is generally installed on the top of the travelling trolley, i.e. top-mounted, such as CN202423110722.0 A kind of off-hook double-beam crane, which is this installation mode. This causes the crane to be unable to effectively pass through in the height limited space when the top height of indoor building is low and the space is small. Moreover, the existing double-beam crane is prone to collision with obstacles on the building ceiling during operation, affecting the service life of the crane and posing a safety hazard. Therefore, a LH type electric double-beam crane operating in height limited space is developed. SUMMARY

[0003] The utility model aims to provide a kind of LH type electric double-beam crane operating in height limited space, to solve the technical problems mentioned in the above background technology.

[0004] To solve the above technical problems, the utility model adopts the following technical solutions:

[0005] The utility model relates to a kind of LH type electric double-beam crane operating in height limited space, including two symmetrical main beams, two ends of two main beams are fixedly provided with end beam in common, the bottom of two end beams is rotatably provided with large car running wheel matched with track on building wall, and each end beam is provided with large car motor for driving large car running wheel rotation;The upper part of two main beams is fixedly provided with limiting slide rail, two limiting slide rails are slidably provided with travelling trolley in common, two sides of travelling trolley are rotatably provided with trolley running wheel matched with two limiting slide rails respectively, and trolley motor for driving trolley running wheel rotation is arranged on travelling trolley;Hoisting roller is rotatably arranged in the inside of travelling trolley, and hoisting motor for driving hoisting roller rotation is fixedly arranged horizontally on the outside of travelling trolley.

[0006] Further, the front and rear ends of each end beam are provided with anti-collision devices.

[0007] Furthermore, each of the anti-collision devices includes pressure sensors fixedly installed at both ends of the end beam and sleeves fixedly sleeved on the outside of the pressure sensors; a through hole is opened at the end of the sleeve away from the end beam, and a sliding rod is slidably installed in the through hole; a sliding seat that slides and engages with the inner circumferential wall of the sleeve is fixedly installed at the end of the sliding rod located inside the sleeve, a contact ball is fixedly installed at the end of the sliding rod located outside the sleeve, and a spring is sleeved on the sliding rod at the part located between the contact ball and the outer end face of the sleeve.

[0008] Furthermore, the two opposing wheels on the traveling trolley are connected by axles. The interior of the traveling trolley is fixedly equipped with mounting plates that are connected to its two side plates. The trolley motor is fixedly mounted on the mounting plate, and the drive shaft of the trolley motor is connected to the axle adjacent to it.

[0009] Furthermore, a worm gear is provided on the drive shaft of the trolley motor, and a turbine adapted to the worm gear is provided on the wheel axle close to the trolley motor.

[0010] Furthermore, the axis of the winch motor is perpendicular to the axis of the winch roller, and a drive bevel gear is provided on the drive shaft of the winch motor. One end of the central shaft of the winch roller extends to the outside of the traveling trolley and is provided with a driven bevel gear that is compatible with the drive bevel gear.

[0011] Furthermore, a protective box is fixedly installed on the outside of the traveling trolley, covering the outside of the driving bevel gear and the driven bevel gear.

[0012] Compared with the prior art, the beneficial technical effects of this utility model are as follows:

[0013] This invention horizontally mounts the hoisting motor of the traveling trolley's hoisting mechanism on the outside of the traveling trolley, and uses a corresponding bevel gear transmission mechanism to enable the hoisting motor to drive the rotation of the hoisting roller perpendicular to its axis, thus ensuring the normal hoisting function of the traveling trolley; thereby effectively reducing the overall height of the double-girder crane, allowing the traveling trolley to pass effectively in height-restricted spaces.

[0014] When the present invention approaches an obstacle during operation, the contact ball on the slide bar will first contact the obstacle and drive the slide bar and the slide block to slide into the sleeve. When the slide block contacts the pressure sensor, the trolley motor stops and the trolley stops moving, thereby avoiding collision accidents of the double girder crane and improving safety performance. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings.

[0016] Fig. 1This is a schematic diagram of the overall structure of this utility model;

[0017] Fig. 2 This is a schematic diagram of the structure of the walking trolley of this utility model;

[0018] Fig. 3 This is a schematic diagram of the anti-collision device of this utility model;

[0019] Explanation of reference numerals in the attached diagram: 1. Main beam; 2. End beam; 3. Track; 4. Trolley wheel; 5. Trolley motor; 6. Limiting slide rail; 7. Traveling trolley; 8. Trolley wheel; 9. Trolley motor; 10. Axle; 11. Mounting plate; 12. Worm gear; 13. Turbine; 14. Winching roller; 15. Hook; 16. Winching motor; 17. Driving bevel gear; 18. Driven bevel gear; 19. Protective box; 20. Pressure sensor; 21. Sleeve; 22. Slide rod; 23. Slide seat; 24. Contact ball; 25. Spring. Detailed Implementation

[0020] like Figs. 1-3 As shown, an LH-type electric double-girder crane operating in a height-restricted space includes two symmetrically arranged main beams 1, with end beams 2 fixedly attached to both ends of the two main beams 1 by welding. The bottom of each end beam 2 is rotatably mounted with trolley wheels 4 adapted to tracks 3 on the building wall, and each end beam 2 is equipped with a trolley motor 5 for driving the trolley wheels 4 to rotate.

[0021] Both main beams 1 are fixedly installed with limit rails 6 on their upper parts, and a traveling trolley 7 is slidably arranged on both limit rails.

[0022] The traveling trolley 7 has rotatably mounted wheels 8 on both sides, each adapted to one of the two limiting slide rails 6. A trolley motor 9 is mounted on the traveling trolley 7 to drive the wheels 8 to rotate. In this embodiment, the two opposing wheels 8 on the traveling trolley 7 are connected by axles 10. An installation plate 11, connected to the two side plates of the traveling trolley 7, is fixedly installed inside the traveling trolley 7 by welding. The trolley motor 9 is fixedly mounted on the installation plate 11, and its drive shaft is connected to the adjacent axle 10. Specifically, a worm gear 12 is mounted on the drive shaft of the trolley motor 9, and a worm wheel 13 adapted to the worm gear 12 is mounted on the adjacent axle 10. When the trolley motor 9 drives the worm gear 12 to rotate, the worm wheel causes the axle and wheels to rotate, thus causing the traveling trolley to move linearly along the two limiting slide rails 6.

[0023] A winch roller 14 is rotatably mounted inside the traveling trolley 7. A steel wire rope is wound around the winch roller 14, and a hook 15 is installed at the free end of the steel wire rope. A winch motor 16 for driving the rotation of the winch roller 14 is horizontally fixedly mounted on the outer side of the traveling trolley 7. Specifically, the axis of the winch motor 16 is perpendicular to the axis of the winch roller 14. A drive bevel gear 17 is mounted on the drive shaft of the winch motor 16. One end of the central shaft of the winch roller 14 extends to the outer side of the traveling trolley 7 and is fitted with a driven bevel gear 18 that matches the drive bevel gear 17. In addition, a protective box 19 is fixedly mounted on the outer side of the traveling trolley 7, covering the drive bevel gear 17 and the driven bevel gear 18. A bearing is installed at the contact point between the drive shaft of the winch motor 16 and the side wall of the protective box.

[0024] This invention horizontally mounts the hoisting motor of the traveling trolley's hoisting mechanism on the outside of the trolley, and uses a corresponding bevel gear transmission mechanism to enable the hoisting motor to drive the rotation of the hoisting roller perpendicular to its axis, ensuring the normal lifting function of the traveling crane. This effectively reduces the overall height of the double-girder crane, allowing it to move effectively in height-restricted spaces.

[0025] As a further improvement to this utility model, anti-collision devices are respectively provided at the front and rear ends of each of the end beams 2.

[0026] Each of the aforementioned anti-collision devices includes pressure sensors 20 fixedly installed at both ends of the end beam 2 and sleeves 21 fixedly sleeved on the outside of the pressure sensors 20; the end of the sleeve 21 away from the end beam 2 has a through hole, and a sliding rod 22 is slidably installed in the through hole. The end of the sliding rod 22 located inside the sleeve 21 is fixedly provided with a sliding seat 23 that slides in cooperation with the inner peripheral wall of the sleeve 21, and the end of the sliding rod 22 located outside the sleeve 21 is fixedly provided with a contact ball 24, and a spring 25 is sleeved on the portion of the sliding rod 22 located between the contact ball 24 and the outer end face of the sleeve 21.

[0027] In addition, this utility model also includes a programmable logic controller (PLC) installed on the main beam, and each of the pressure sensors and motors is electrically connected to the PLC. However, when the crane approaches an obstacle, the contact ball on the slide bar will first contact the obstacle, causing the slide bar and slide block to slide into the sleeve. When the slide block contacts the pressure sensor, the pressure sensor transmits a sensing signal to the PLC, which then sends a command to the trolley motor to stop it, thereby avoiding a collision accident of the double-girder crane.

[0028] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. An LH-type electric double-girder crane operating in a height-restricted space, characterized in that: The system includes two symmetrically arranged main beams, each with end beams fixedly mounted at both ends. The bottom of each end beam is rotatably equipped with trolley wheels adapted to tracks on the building wall, and each end beam is equipped with a trolley motor for driving the trolley wheels. Limit rails are fixedly mounted on the upper part of each main beam, and a traveling trolley slides along both limit rails. Trolley wheels, adapted to the two limit rails, are rotatably mounted on both sides of the traveling trolley, and a trolley motor is mounted on the traveling trolley for driving the trolley wheels. A winch roller is rotatably mounted inside the traveling trolley, and a winch motor for driving the winch roller is horizontally fixed on the outer side of the traveling trolley.

2. The LH-type electric double-girder crane operating in a height-restricted space according to claim 1, characterized in that: Anti-collision devices are provided at both the front and rear ends of each end beam.

3. The LH-type electric double-girder crane operating in a height-restricted space according to claim 2, characterized in that: Each of the aforementioned anti-collision devices includes pressure sensors fixedly installed at both ends of the end beam and sleeves fixedly sleeved on the outside of the pressure sensors; a through hole is opened at the end of the sleeve away from the end beam, and a sliding rod is slidably installed in the through hole; a sliding seat that slides and engages with the inner circumferential wall of the sleeve is fixedly installed at the end of the sliding rod located inside the sleeve, a contact ball is fixedly installed at the end of the sliding rod located outside the sleeve, and a spring is sleeved on the sliding rod at the part located between the contact ball and the outer end face of the sleeve.

4. The LH-type electric double-girder crane operating in a height-restricted space according to claim 1, characterized in that: The two opposing wheels on the traveling trolley are connected by axles. The interior of the traveling trolley is fixedly equipped with a mounting plate connected to its two side plates. The trolley motor is fixedly mounted on the mounting plate, and the drive shaft of the trolley motor is connected to the axle adjacent to it.

5. The LH-type electric double-girder crane operating in a height-restricted space according to claim 4, characterized in that: A worm gear is provided on the drive shaft of the trolley motor, and a turbine gear adapted to the worm gear is provided on the axle close to the trolley motor.

6. The LH-type electric double-girder crane operating in a height-restricted space according to claim 1, characterized in that: The axis of the winch motor is perpendicular to the axis of the winch roller. A drive bevel gear is provided on the drive shaft of the winch motor. One end of the central shaft of the winch roller extends to the outside of the traveling trolley and is provided with a driven bevel gear that matches the drive bevel gear.

7. The LH-type electric double-girder crane operating in a height-restricted space according to claim 6, characterized in that: A protective box is fixedly installed on the outside of the traveling trolley, covering the outside of the driving bevel gear and the driven bevel gear.

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