Braking device of electric double-beam crane

Abstract

The utility model discloses a braking device of an electric double-beam crane. The braking device comprises a wind-up roll, a braking device, an auxiliary braking assembly and a binding assembly, according to the braking device of the electric double-beam crane, when hydraulic oil is introduced into the oil cylinder to brake the wind-up roll, the hydraulic oil in the oil cylinder presses the main piston rods on the two sides to move outwards, so that the main friction plates at the outer ends of the main piston rods are pressed on the brake rings in the wind-up roll for braking; when the main piston rods on the two sides in the oil cylinder move outwards, the connecting rods synchronously moving outwards at the upper ends of the main piston rods drive the side piston blocks in the side mounting barrels to move laterally, so that the auxiliary mounting barrels are communicated with the oil cylinder at the bottom, and the auxiliary friction plates on the tops of the auxiliary mounting barrels are moved to the braking position after the main friction plates are braked; therefore, when the main friction plate is abraded or the braking effect is poor, braking of the winding roller can be conducted by means of the auxiliary manufacturing part auxiliary friction plate on the upper portion, and the safety of the electric double-beam crane in the winding and unwinding process of the winding roller in the hoisting process is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electric double-beam cranes, in particular to a braking device for electric double-beam cranes. Background Art

[0002] An electric double-girder crane is a device used for lifting and moving objects. It consists of two double beams spanning between pillars. The cables are driven by an electric motor to lift and lower the objects. Its working principle is that after the motor rotates, the lifting mechanism is driven by the reducer, coupling, brake and winch mechanism, and the wire rope is wound on the winding wheel to lift the heavy objects. After the lifting is completed, with the help of the brake and clutch control console, the crane cooperates with the trolley and car to complete the suspension and horizontal transportation of the lifted objects.

[0003] The existing electric double-girder crane braking device has a problem that the friction plate for braking the winding roller is worn and deformed or encounters other problems such as oil pollution and impurities, resulting in poor braking effect on the winding roller, making it inconvenient to ensure the stability and safety of the steel wire hoisting at the lower end of the winding roller. For this reason, we propose an electric double-girder crane braking device. Utility Model Content

[0004] The utility model aims to solve one of the technical problems existing in the prior art or related technologies.

[0005] To this end, the technical solution adopted in this utility model is:

[0006] A braking device for an electric double-girder crane comprises: a winding roller, a braking device, an auxiliary braking assembly, and a restraining assembly; the braking device comprises a mounting plate movably mounted at one end of the winding roller, main friction plates movably mounted on both sides of the front end of the mounting plate, an oil cylinder mounted in the center of the upper part of the main friction plates on both sides, a brake ring fixedly mounted in the side wall of one side of the winding roller, a mounting frame fixedly mounted at the front end of the mounting plate, and main piston rods on both sides of the oil cylinder; the auxiliary braking assembly comprises a secondary mounting cylinder fixedly mounted on the upper part of the oil cylinder, a secondary piston rod movably mounted in the secondary mounting cylinder, a secondary friction plate fixedly mounted on the top of the secondary piston rod, side mounting cylinders fixedly mounted on both sides of the lower part of the secondary mounting cylinder, side piston blocks movably mounted in the side mounting cylinders, and connecting rods fixedly mounted on the outer ends of the side piston blocks; the restraining assembly comprises a middle fixed rod fixedly mounted on both sides of the bottom of the secondary friction plates, and a middle restraining cylinder movably mounted on the outer ends of the middle fixed rod.

[0007] Preferably, a spring is movably mounted on the outer end of the auxiliary piston rod in the auxiliary mounting cylinder.

[0008] Preferably, a limiting ring is fixedly installed on the inner wall of the auxiliary mounting cylinder.

[0009] Preferably, the lower portion of the connecting rod is fixedly connected to the main piston rod at the lower end.

[0010] Preferably, side fixing rods are fixedly mounted on both sides of the bottom of the auxiliary friction plate, side restraining cylinders are movably mounted on the outer ends of the side fixing rods, and the bottoms of the side restraining cylinders are fixed on the mounting plate.

[0011] Preferably, the bottom of the middle restraining cylinder is also fixed on the mounting plate.

[0012] By adopting the above technical solution, the beneficial effects achieved by the utility model are as follows:

[0013] 1. In the utility model, when hydraulic oil is introduced into the oil cylinder to brake the winding roller, the hydraulic oil in the oil cylinder will press the main piston rods on both sides to move outward, thereby pressing the main friction plates at the outer ends of the main piston rods onto the brake rings in the winding roller to brake. When the main piston rods on both sides in the oil cylinder move outward, the connecting rods whose upper ends move outward synchronously will also drive the side piston blocks in the side mounting cylinders to move sideways, thereby connecting the auxiliary mounting cylinder with the oil cylinder at the bottom, so that after the main friction plates are braked, the auxiliary friction plates at the top of the auxiliary mounting cylinders can be moved to the braking position. Therefore, when the main friction plates are worn or the braking effect is poor, the winding roller can be braked by relying on the auxiliary friction plates of the upper auxiliary brake components, thereby improving the safety of the electric double-girder crane hoisting in the winding roller pay-off line.

[0014] 2. In the present invention, the middle fixing rod and the side fixing rod are installed in the middle restraining tube and the side restraining tube at the center and both sides of the bottom of the auxiliary friction plate, which can restrain the position of the auxiliary friction plate in the upper end braking, thereby ensuring the stability of the auxiliary friction plate in braking. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is the overall structural diagram of the utility model;

[0016] Figure 2 This is a structural diagram of the braking device of the utility model;

[0017] Figure 3 This is a diagram showing the removal of the mounting bracket on the brake device of the present invention;

[0018] Figure 4 It is a partial cross-sectional view of the upper part of the brake device of the utility model;

[0019] Figure 5 For this utility model Figure 4 A magnified view of center.

[0020] Reference numerals:

[0021] 100, winding roller;

[0022] 200, brake device; 201, mounting plate; 202, main friction plate; 203, oil cylinder; 204, brake ring; 205, mounting bracket; 206, main piston rod;

[0023] 300, auxiliary brake assembly; 301, auxiliary mounting cylinder; 302, auxiliary piston rod; 303, auxiliary friction plate; 304, side mounting cylinder; 305, side piston block; 306, connecting rod; 307, spring; 308, limit ring;

[0024] 400, restraint assembly; 401, middle fixing rod; 402, middle restraint tube; 403, side fixing rod; 404, side restraint tube. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the present invention more clear, the present invention is further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings. It should be noted that the embodiments of the present invention and the features therein can be combined with each other unless there is any conflict.

[0026] An electric double-girder crane braking device provided by some embodiments of the present invention will be described below with reference to the accompanying drawings.

[0027] Example 1:

[0028] Combine Figure 1-5 As shown, the utility model provides an electric double-beam crane braking device, comprising: a winding roller 100, a braking device 200, an auxiliary braking assembly 300, and a restraining assembly 400; the braking device 200 comprises a mounting plate 201 movably mounted at one end of the winding roller 100, main friction plates 202 movably mounted on both sides of the front end of the mounting plate 201, an oil cylinder 203 mounted in the center of the upper part of the main friction plates 202 on both sides, a brake ring 204 fixedly mounted in the side wall of one side of the winding roller 100, a mounting frame 205 fixedly mounted at the front end of the mounting plate 201, and main piston rods 206 on both sides of the oil cylinder 203; the auxiliary braking assembly 300 comprises an oil cylinder 201, a main piston rod 206 on both sides of the oil cylinder 203, and a main piston rod 206 on both sides of the oil cylinder 203; 03 A secondary mounting cylinder 301 is fixedly installed on the upper part, a secondary piston rod 302 is movably installed in the secondary mounting cylinder 301, a secondary friction plate 303 is fixedly installed on the top of the secondary piston rod 302, side mounting cylinders 304 are fixedly installed on both sides of the lower part of the secondary mounting cylinder 301, side piston blocks 305 are movably installed in the side mounting cylinders 304, and connecting rods 306 are fixedly installed on the outer ends of the side piston blocks 305; a spring 307 is movably installed on the outer end of the secondary piston rod 302 in the secondary mounting cylinder 301, and a limiting ring 308 is fixedly installed on the inner wall of the secondary mounting cylinder 301, and the lower part of the connecting rod 306 is fixedly connected to the main piston rod 206 at the lower end.

[0029] Specifically, an electric double-girder crane is a device used for lifting and transporting objects. Its working principle is that after the motor rotates, the lifting mechanism is driven by the reducer, coupling, brake and winch mechanism, and the wire rope is wound on the winding wheel to lift the heavy object. After the lifting is completed, braking is performed with the help of the brake and clutch console; when hydraulic oil is introduced into the oil cylinder 203 to brake the winding roller 100, the hydraulic oil in the oil cylinder 203 will press the main piston rods 206 on both sides to move outward, thereby pressing the main friction plate 202 at the outer end of the main piston rod 206 onto the brake ring 204 in the winding roller 100 for braking. When the main piston rods 206 on both sides in the oil cylinder 203 move outward, the connecting rod 306 whose upper end moves outward synchronously will also drive the side piston block 305 in the side mounting cylinder 304 to move sideways, thereby pressing the auxiliary mounting cylinder The auxiliary friction plate 303 on the top of the auxiliary mounting cylinder 301 is connected to the oil cylinder 203 at the bottom, so as to move the auxiliary friction plate 303 on the top of the auxiliary mounting cylinder 301 to the braking position after the main friction plate 202 is braked. When the main friction plate 202 is worn or the braking effect is poor, the auxiliary friction plate 303 of the upper auxiliary braking component can be used to brake the winding roller 100, thereby improving the safety of the electric double-beam crane hoisting of the winding roller 100 in the reeling and unreeling line. The spring 307 installed at the outer end of the auxiliary piston rod 302 in the auxiliary mounting cylinder 301 is mainly used for returning the auxiliary piston rod 302 and the auxiliary friction plate 303 during the return movement of the main piston rod 206 on both sides of the oil cylinder 203. The limiting ring 308 fixedly installed in the auxiliary mounting cylinder 301 is mainly used for positioning the position of the auxiliary piston rod 302 in the auxiliary mounting cylinder 301, so as to avoid forming an obstacle between it and the side piston blocks 305 on both sides of the bottom.

[0030] Example 2:

[0031] Combine Figure 4 As shown, on the basis of embodiment one, the restraint assembly 400 includes a middle fixed rod 401 fixedly installed on both sides of the bottom of the auxiliary friction plate 303, and a middle restraint cylinder 402 movably installed on the outer end of the middle fixed rod 401. Side fixed rods 403 are also fixedly installed on both sides of the bottom of the auxiliary friction plate 303, and side restraint cylinders 404 are movably installed on the outer ends of the side fixed rods 403, and the bottoms of the side restraint cylinders 404 are fixed on the mounting plate 201, and the bottoms of the middle restraint cylinders 402 are also fixed on the mounting plate 201.

[0032] Specifically, the middle fixing rod 401 and the side fixing rod 403 installed in the middle restraining tube 402 and the side restraining tube 404 at the center and both sides of the bottom of the auxiliary friction plate 303 can restrain the position of the auxiliary friction plate 303 in the upper end braking, thereby ensuring the stability of the auxiliary friction plate 303 in braking, thereby improving the service life of the auxiliary friction plate 303.

[0033] The working principle and use process of this utility model:

[0034] When the winding roller 100 is braked, the hydraulic oil will enter the oil cylinder 203 and squeeze the main piston rods 206 on both sides to move outward after entering the oil cylinder 203, thereby squeezing the outer main friction plates 202 through the main piston rods 206 to brake. When the main friction plates 202 have poor braking effect due to problems such as wear, when the main piston rods 206 on both sides of the oil cylinder 203 move outward, the connecting rods 306 whose upper ends move outward synchronously will also pull the side piston blocks 305 in the side mounting cylinder 304 to move outward. After the side piston blocks 305 on both sides move outward, the auxiliary mounting cylinder 301 and the oil cylinder 203 are connected. The hydraulic oil flowing into the auxiliary mounting cylinder 301 through the oil cylinder 203 squeezes the auxiliary piston rod 302 at the upper end of the auxiliary mounting cylinder 301 to rise, thereby performing auxiliary braking through the auxiliary friction plates 303 on the top of the auxiliary piston rod 302 to ensure the braking effect of the winding roller 100 when the braking effect of the main friction plates 202 is poor.

[0035] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. An electric double-beam crane braking device, characterized in that: include: A winding roller (100), a braking device (200), an auxiliary braking assembly (300), and a restraining assembly (400); The brake device (200) comprises a mounting plate (201) movably mounted on one end of the winding roller (100), main friction plates (202) movably mounted on both sides of the front end of the mounting plate (201), an oil cylinder (203) mounted in the center of the upper part of the main friction plates (202) on both sides, a brake ring (204) fixedly mounted in the side wall of one side of the winding roller (100), a mounting frame (205) fixedly mounted on the front end of the mounting plate (201), and main piston rods (206) on both sides of the oil cylinder (203); The auxiliary brake assembly (300) comprises a secondary mounting cylinder (301) fixedly mounted on the upper portion of the oil cylinder (203), a secondary piston rod (302) movably mounted in the secondary mounting cylinder (301), a secondary friction plate (303) fixedly mounted on the top of the secondary piston rod (302), side mounting cylinders (304) fixedly mounted on both sides of the lower portion of the secondary mounting cylinder (301), side piston blocks (305) movably mounted in the side mounting cylinders (304), and connecting rods (306) fixedly mounted on the outer ends of the side piston blocks (305). The restraint assembly (400) comprises a middle fixed rod (401) fixedly mounted on both sides of the bottom of the auxiliary friction plate (303) and a middle restraint cylinder (402) movably mounted on the outer ends of the middle fixed rod (401).

2. The electric double-girder crane braking device according to claim 1, characterized in that: A spring (307) is also movably mounted on the outer end of the auxiliary piston rod (302) in the auxiliary mounting cylinder (301).

3. The electric double-girder crane braking device according to claim 1, characterized in that: A limiting ring (308) is also fixedly mounted on the inner wall of the auxiliary mounting cylinder (301).

4. The electric double-girder crane braking device according to claim 1, characterized in that: The lower portion of the connecting rod (306) is fixedly connected to the main piston rod (206) at the lower end.

5. The electric double-girder crane braking device according to claim 1, characterized in that: Side fixing rods (403) are fixedly installed on both sides of the bottom of the auxiliary friction plate (303), and side restraining cylinders (404) are movably installed on the outer ends of the side fixing rods (403), and the bottoms of the side restraining cylinders (404) are fixed on the mounting plate (201).

6. The electric double-girder crane braking device according to claim 1, characterized in that: The bottom of the middle restraining cylinder (402) is also fixed on the mounting plate (201).

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