Lifting device of double-beam bridge type crane

Abstract

The utility model provides a double-beam bridge type crane lifting device which comprises a sliding frame, a walking mechanism is installed on the sliding frame, and the walking mechanism ensures that the sliding frame stably moves on a target double beam; the hoisting mechanism comprises a first driving motor, a first winding drum, a first steel wire rope, a first speed reducer, a first floating shaft and a main pulley assembly, the first driving motor is installed on one side of the sliding frame, the first speed reducer is installed on the other side of the sliding plate, and one end of the first floating shaft is connected to an output shaft of the first driving motor; the other end of the first floating shaft is connected to the input end of a first speed reducer through a first low-speed shaft coupler, a first winding drum is connected to the first speed reducer, a first steel wire rope is wound around the first winding drum, and a main pulley assembly is dragged by the first steel wire rope to move in the vertical direction. And the first braking mechanism is mounted on the sliding frame. The problems that when a brake is arranged on a steel wire rope, the steel wire rope is prone to slipping or breaking, and the steel wire rope brake is greatly abraded are solved.

Description

Technical Field

[0001] This application belongs to the field of crane technology, and more specifically, relates to a lifting device for a double-girder bridge crane. Background Technology

[0002] A double-girder crane generally consists of three main parts: mechanical, electrical, and metal structure. The appearance of a bridge crane resembles a single-span flat bridge supported at both ends and moving horizontally along two parallel overhead tracks. Double-girder cranes are widely used in indoor and outdoor industrial and mining enterprises, steel and chemical plants, railway transportation, ports and docks, and logistics and distribution sectors. However, some current double-girder cranes use braking mechanisms specifically for the wire rope of the lifting mechanism. For example, a safety braking double-girder crane described in patent publication number CN212475929U has a reel extending out of the winding housing and equipped with a brake disc. A brake caliper is installed on the trolley frame corresponding to the brake disc. A guide wheel is installed below the rope guide, and the wire rope extending from the rope guide passes through the guide wheel in sequence before connecting to the lifting device. An acceleration sensor is installed on the guide wheel, and a wire rope brake is installed on the trolley frame. The wire rope passes through the wire rope brake. In this configuration, the wire rope is prone to slippage or breakage during the rapid descent and clamping process, and it also causes significant wear to the wire rope brake. Summary of the Invention

[0003] The purpose of this application is to provide a lifting device for a double-girder bridge crane, which solves the problem that in existing steel cranes, the brake is located on the wire rope, and the wire rope is prone to slippage or breakage during the process of being clamped at a rapid descent, and causes great wear to the wire rope brake.

[0004] To achieve the above objectives, the technical solution adopted in this application is: a double-girder bridge crane lifting device, comprising:

[0005] A sliding frame, on which a traveling mechanism is mounted, ensures that the sliding frame moves smoothly on the target double beams;

[0006] The hoisting mechanism includes a first drive motor, a first drum, a first wire rope, a first reducer, a first floating shaft, and a main pulley assembly. The first drive motor is mounted on one side of the sliding frame, and the first reducer is mounted on the other side of the sliding frame. One end of the first floating shaft is connected to the output shaft of the first drive motor, and the other end of the first floating shaft is connected to the input end of the first reducer through a first low-speed shaft coupling. The first drum is connected to the first reducer, and the first wire rope is wound around the first drum. The main pulley assembly moves vertically by the traction of the first wire rope.

[0007] The first braking mechanism is mounted on the sliding frame and abuts against the first low-speed shaft coupling to achieve braking when braking is required.

[0008] Preferably, the first braking mechanism includes:

[0009] A first mounting base is mounted on the sliding frame via a mounting bracket, and the first mounting base has an extension.

[0010] An electro-hydraulic rod is connected to the extension.

[0011] A first brake arm is hinged to the first mounting base, and a first brake drum is mounted on the first brake arm.

[0012] The second brake arm is hinged to the first mounting base, and a second brake drum is mounted on the second brake arm;

[0013] Pull the control lever, which hinges to the first brake arm;

[0014] An adjustment control arm is hinged to the pull control lever and the second brake arm, and the adjustment control arm is also hinged to the free end of the electro-hydraulic rod.

[0015] Preferably, the first braking mechanism further includes a reset assembly, which is installed between the first braking arm and the second braking arm.

[0016] Preferably, the reset component includes:

[0017] A sliding rod, one end of which is hinged to the first brake arm, and the other end of which is slidably connected to the second brake arm;

[0018] A spring mounting component is connected to the second brake arm, and the slide rod passes through the spring mounting component.

[0019] Furthermore, the slide rod is slidably connected to the spring mounting component;

[0020] A return spring is mounted on the spring mounting component and sleeved on the slide rod.

[0021] Preferably, the walking mechanism includes:

[0022] The second drive motor is mounted on the sliding frame;

[0023] The second reducer is connected to the second drive motor;

[0024] An active wheel assembly includes a wheel axle and two active wheels. The wheel axle is connected to the second reducer. The two active wheels are respectively mounted on both sides of the bottom of the sliding frame through angular bearing housings, and both active wheels are connected to the wheel axle.

[0025] The driven wheel assembly includes two driven wheels, which are mounted on the bottom of the sliding frame via separate angular bearing housings;

[0026] Both the driving wheel and the driven wheel are track wheels and are connected to the target double beam.

[0027] Preferably, a brake disc is connected to the output shaft of the second drive motor, and a second braking mechanism adapted to the brake disc is installed on the sliding frame. The second braking mechanism is used to stop the sliding frame on the target double beam.

[0028] Preferably, the lifting device of the double-girder bridge crane further includes: an auxiliary lifting mechanism, which includes a third drive motor, a second drum, a second wire rope, a third reducer, a second floating shaft, and an auxiliary pulley assembly. One end of the second floating shaft is connected to the third drive motor, and the other end of the second floating shaft is connected to the third reducer through a second low-speed shaft coupling. One end of the second drum is connected to the third reducer, and the other end of the second drum is connected to a bearing seat, which is fixedly connected to the sliding frame. The second wire rope is wound around the second drum, and the auxiliary pulley assembly moves vertically by the traction of the second wire rope.

[0029] Preferably, the auxiliary lifting mechanism further includes a third braking mechanism, which is mounted on the sliding frame and abuts against the second low-speed shaft coupling to achieve braking when braking is required.

[0030] Preferably, the first drum is connected to the first drum shaft via a first drum hub and a first gear connecting disc pair.

[0031] Preferably, the second drum is connected to the second drum shaft via a second drum hub and a second gear connecting disc pair.

[0032] The advantages of the double-girder bridge crane lifting device provided in this application are as follows:

[0033] 1. This utility model achieves braking on the first floating shaft by incorporating a brake disc function on the first low-speed shaft coupling on the first floating shaft, and installing a first braking mechanism adapted to the first low-speed shaft coupling on the sliding frame, thereby replacing braking on the wire rope and preventing the wire rope from slipping or breaking due to braking. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0035] Figure 1 A three-dimensional structural diagram of the lifting device for a double-girder bridge crane provided in the embodiments of this application. Figure 1 ;

[0036] Figure 2 A three-dimensional structural diagram of the lifting device for a double-girder bridge crane provided in the embodiments of this application. Figure 2 ;

[0037] Figure 3 A schematic diagram showing the positional distribution of the first and second drum shafts of the double-girder bridge crane lifting device provided in this application embodiment;

[0038] Figure 4 This is a schematic diagram of the first braking mechanism of the double-girder bridge crane lifting device provided in the embodiments of this application.

[0039] The following are the labeling elements in the figure:

[0040] 1. Sliding frame;

[0041] 2. Lifting mechanism; 201. First drive motor; 202. First drum; 203. First wire rope; 204. First reducer; 205. First floating shaft; 206. First low-speed shaft coupling; 207. Main pulley assembly; 208. First bearing housing; 209. First drum hub; 210. First gear connecting disc pair; 211. First drum shaft;

[0042] 3. First braking mechanism; 301. First mounting base; 302. Electro-hydraulic rod; 303. First brake arm; 304. First brake drum; 305. Second brake arm; 306. Second brake drum; 307. Pull control lever; 308. Adjustment control arm; 309. Hinge seat; 310. Slide rod; 311. Spring mounting component; 312. Return spring;

[0043] 4. Traveling mechanism; 401. Second drive motor; 402. Second reducer; 403. Wheel axle; 404. Drive wheel; 405. Angle bearing housing; 406. Driven wheel; 407. Second braking mechanism; 408. Second brake disc;

[0044] 5. Secondary lifting mechanism; 501. Third drive motor; 502. Second drum; 503. Second wire rope; 504. Third reducer; 505. Second floating shaft; 506. Secondary pulley assembly; 507. Second bearing housing; 508. Second low-speed shaft coupling; 509. Third braking mechanism; 510. Second drum hub; 511. Second gear connecting disc pair; 512. Second drum shaft. Detailed Implementation

[0045] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0046] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0047] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", 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 application 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 application.

[0048] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0049] Please refer to the following: Figures 1 to 4 The lifting device for a double-girder bridge crane provided in the embodiments of this application will now be described.

[0050] The lifting device of the double-girder bridge crane includes a sliding frame 1, a hoisting mechanism 2, and a first braking mechanism 3. Specifically, a traveling mechanism 4 is installed on the sliding frame 1, which ensures that the sliding frame moves smoothly on the target double girder. The hoisting mechanism includes a first drive motor 201, a first drum 202, a first wire rope 203, a first reducer 204, a first floating shaft 205, and a main pulley assembly 207. The first drive motor 201 is installed on one side of the sliding frame 1, and the first reducer 204 is installed on the other side of the sliding frame 1. One end of the first floating shaft 205 is connected to the output shaft of the first drive motor 201, and the other end of the first floating shaft is connected to the input end of the first reducer 204 through a first low-speed shaft coupling 206. It should be noted that the first low-speed shaft coupling 205 of this application... 6. A structure with a brake disc function; the first drum 202 is connected to the first reducer 204, the other end of the first drum 202 is connected to the first bearing seat 208, the first bearing seat 208 is connected to the sliding frame 1, the first wire rope 203 is wound around the first drum 202, the main pulley assembly 207 moves vertically by the traction of the first wire rope 203, specifically the main pulley assembly 207 includes a main pulley and a main hook, the main hook is hinged to the main pulley, the main pulley is connected to the first wire rope 203; the first braking mechanism 3 is installed on the sliding frame 1, and abuts against the first low-speed shaft coupling 206 to achieve braking when braking is required.

[0051] Specifically, the first braking mechanism 3 includes: a first mounting base 301, which is mounted on the sliding frame 1 via a mounting bracket, and has an extension; an electro-hydraulic rod 302 connected to the extension; a first brake arm 303 hinged to the first mounting base 301, on which a first brake drum 304 is mounted; a second brake arm 305 hinged to the first mounting base 301, on which a second brake drum 306 is mounted, and friction pads are fixedly connected to the inner sides of both the first brake drum 304 and the second brake drum 306; and a pull control lever 307 hinged to the first mounting base 1. The first braking mechanism 3 includes an adjustment control arm 308, which is hinged to both the pull control rod 307 and the second braking arm 305. The adjustment control arm 308 is also hinged to the free end of the electro-hydraulic rod 302. Specifically, the free end of the electro-hydraulic rod 302 is connected to a hinge seat 309, which is also connected to the adjustment control arm 308. Both sides of the hinge seat 309 are connected to reset elastic components. These reset elastic components are existing technology and consist of a spring, a rod, and a sliding sleeve. The sliding sleeve is fixedly connected to the hinge seat 309. One end of the rod is fixedly connected to the cylinder of the electro-hydraulic rod 302, and the other end extends into the sliding sleeve and slides within it. The spring is located inside the sliding sleeve, with one end connected to the sleeve and the other end connected to the rod. The first braking mechanism 3 also includes a reset component, which is installed between the first braking arm 303 and the second braking arm 305. The reset assembly includes: a slide rod 310, one end of which is hinged to the first brake arm 303, and the other end of which is slidably connected to the second brake arm 305. Specifically, a rotating shaft is mounted on the second brake arm 305, and a sliding hole is provided on the rotating shaft, through which the slide rod 310 passes; a spring mounting member 311, which is connected to the second brake arm 305 via the rotating shaft, and the slide rod 310 passes through the spring mounting member 311, and the slide rod 310 is slidably connected to the spring mounting member 311; and a reset spring 312, which is mounted on the spring mounting member 311 and sleeved on the slide rod 310. When the first brake arm 303 and the second brake arm 305 approach each other, the reset spring 312 is compressed and undergoes elastic deformation. When the electro-hydraulic rod 302 releases the brake, the first brake arm 303 and the second brake arm 305 quickly reset under the action of the reset spring 312.

[0052] When braking, the free end of the electro-hydraulic rod 302 pulls down the hinge seat 309, causing the connection between the adjusting control arm 308 and the hinge seat 309 to also pull down. At the same time, the adjusting control arm 308 pulls the control rod 307 to bring the first brake arm 303 closer to the second brake arm 305. The second brake arm 305 moves closer to the first brake arm 303 through the hinge of the adjusting control arm 308, so that the first brake drum 304 and the second brake drum 306 abut against the brake disc of the first low-speed shaft coupling 206 to achieve braking.

[0053] Specifically, the traveling mechanism 4 includes: a second drive motor 401, which is mounted on the sliding frame. In this embodiment, the second drive motor 401 is a dual-axis motor; a second reducer 402, which is connected to one of the output shafts of the second drive motor 401; a set of driving wheels 404, which includes a wheel axle 403 and two driving wheels 404. The wheel axle 403 is connected to the output shaft of the second reducer 402 via a coupling. The two driving wheels 404 are respectively mounted on both sides of the bottom of the sliding frame 1 via angle bearing housings 405, and both driving wheels 404 are connected to the wheel axle 403 via couplings; and a set of driven wheels 406, which includes two driven wheels 406, which are respectively mounted on the bottom of the sliding frame 1 via angle bearing housings 405. Both the driving wheels 404 and the driven wheels 406 are track wheels and are connected to the target double beam. Driven wheel 406 and driven wheel 404 are mounted on the bottom of the sliding frame 1 via angular bearing housing 405. Using angular bearing housing 405 to mount the wheels can bring multiple benefits such as strong load-bearing capacity, smooth operation and low noise, strong adaptability, easy installation and maintenance, as well as serialization and modular design.

[0054] In a preferred embodiment, a second brake disc 408 is connected to another output shaft of the second drive motor 401, and a second braking mechanism 407 adapted to the second brake disc 408 is installed on the sliding frame. The second braking mechanism 407 is used to stop the sliding frame 1 on the target double beam. It should be noted that the second braking mechanism 407 has the same structure as the first braking mechanism 3, and will not be described in detail here.

[0055] In a preferred embodiment, to improve operational efficiency, enhance operational safety, improve equipment reliability, and adapt to diverse operational needs, the double-girder bridge crane lifting device further includes: an auxiliary lifting mechanism 5, which includes a third drive motor 501, a second drum 502, a second wire rope 503, a third reducer 504, a second floating shaft 505, and an auxiliary pulley assembly 506. One end of the second floating shaft 505 is connected to the third drive motor 501, and the other end of the second floating shaft 505 is connected to the third reducer 504 via a second low-speed shaft coupling 508. One end of the second drum 502 is connected to the third reducer 504, and the other end of the second drum 502 is connected to a second bearing seat 507, which is fixedly connected to the sliding frame 1. The second wire rope 503 is wound around the second drum 502, and the auxiliary pulley assembly 506 moves vertically by the traction of the second wire rope 503. The auxiliary pulley assembly 506 includes an auxiliary pulley and an auxiliary hook. The auxiliary hook is hinged to the auxiliary pulley, and the auxiliary pulley is connected to the second wire rope 503. The auxiliary lifting mechanism 5 further includes a third braking mechanism 509, which is mounted on the sliding frame 1 and abuts against the second low-speed shaft coupling 508 to achieve braking when braking is required. It should be noted that in the embodiment, the second low-speed shaft coupling 508 has a structure with a brake disc function, and the specific structure of the third braking mechanism 509 is the same as that of the first braking mechanism 3, which will not be elaborated here.

[0056] In an advantageous embodiment, the first drum 202 is connected to the first drum shaft 211 via a first drum hub 209 and a first gear connecting disc pair 210. One end of the first drum shaft 211 is connected to the output end of the first reducer 204, and the other end is connected to the first bearing seat 208. The design of the first gear connecting disc pair 210 compensates for certain installation errors, ensuring accurate connection between the first drum 202 and the first reducer, thereby improving the stability and reliability of the entire mechanism. It also offers advantages such as increased transmission efficiency, extended drum lifespan, and ease of disassembly and reinstallation.

[0057] In a preferred embodiment, the second drum 502 is connected to the second drum shaft 512 via the second drum hub 510 and the second gear connecting disc pair 511. One end of the second drum shaft 512 is connected to the output end of the third reducer 504, and the other end is connected to the second bearing seat 507. The design of the second gear connecting disc pair 511 can compensate for certain installation errors, ensuring accurate connection between the second drum 502 and the third reducer, thereby improving the stability and reliability of the entire mechanism. It also has the advantages of improving transmission efficiency, extending the service life of the drum, and facilitating disassembly and reinstallation.

[0058] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. Double-girder bridge crane hoisting gear, characterized in that include: A sliding frame, on which a traveling mechanism is mounted, ensures that the sliding frame moves smoothly on the target double beams; The hoisting mechanism includes a first drive motor, a first drum, a first wire rope, a first reducer, a first floating shaft, and a main pulley assembly. The first drive motor is mounted on one side of the sliding frame, and the first reducer is mounted on the other side of the sliding frame. One end of the first floating shaft is connected to the output shaft of the first drive motor, and the other end of the first floating shaft is connected to the input end of the first reducer through a first low-speed shaft coupling. The first drum is connected to the first reducer, and the first wire rope is wound around the first drum. The main pulley assembly moves vertically by the traction of the first wire rope. The first braking mechanism is mounted on the sliding frame and abuts against the first low-speed shaft coupling to achieve braking when braking is required.

2. Double-girder bridge crane hoisting unit according to claim 1, characterized in that The first braking mechanism includes: A first mounting base is mounted on the sliding frame via a mounting bracket, and the first mounting base has an extension. An electro-hydraulic rod is connected to the extension. A first brake arm is hinged to the first mounting base, and a first brake drum is mounted on the first brake arm. The second brake arm is hinged to the first mounting base, and a second brake drum is mounted on the second brake arm; Pull the control lever, which hinges to the first brake arm; An adjustment control arm is hinged to the pull control lever and the second brake arm, and the adjustment control arm is also hinged to the free end of the electro-hydraulic rod.

3. Double-girder bridge crane hoisting unit according to claim 2, characterized in that The first braking mechanism further includes a reset assembly, which is installed between the first braking arm and the second braking arm.

4. Double-girder bridge crane hoisting unit according to claim 3, characterized in that The reset component includes: A sliding rod, one end of which is hinged to the first brake arm, and the other end of which is slidably connected to the second brake arm; A spring mounting component is connected to the second brake arm, and the slide rod passes through the spring mounting component and is slidably connected to the spring mounting component; A return spring is mounted on the spring mounting component and sleeved on the slide rod.

5. Double-girder bridge crane hoisting unit according to claim 1 or 4, characterized in that The walking mechanism includes: The second drive motor is mounted on the sliding frame; The second reducer is connected to the second drive motor; An active wheel assembly includes a wheel axle and two active wheels. The wheel axle is connected to the second reducer. The two active wheels are respectively mounted on both sides of the bottom of the sliding frame through angular bearing housings, and both active wheels are connected to the wheel axle. The driven wheel assembly includes two driven wheels, which are mounted on the bottom of the sliding frame via separate angular bearing housings; Both the driving wheel and the driven wheel are track wheels and are connected to the target double beam.

6. Double-girder bridge crane hoisting unit according to claim 5, characterized in that A brake disc is connected to the output shaft of the second drive motor, and a second braking mechanism adapted to the brake disc is installed on the sliding frame. The second braking mechanism is used to stop the sliding frame on the target double beam.

7. Double-girder bridge crane hoisting unit according to claim 6, characterized in that Also includes: The auxiliary lifting mechanism includes a third drive motor, a second drum, a second wire rope, a third reducer, a second floating shaft, and an auxiliary pulley assembly. One end of the second floating shaft is connected to the third drive motor, and the other end of the second floating shaft is connected to the third reducer via a second low-speed shaft coupling. One end of the second drum is connected to the third reducer, and the other end of the second drum is connected to a bearing seat, which is fixedly connected to the sliding frame. The second wire rope is wound around the second drum, and the auxiliary pulley assembly moves vertically by the traction of the second wire rope.

8. Double-girder bridge crane hoisting unit according to claim 7, characterized in that The auxiliary lifting mechanism also includes a third braking mechanism, which is mounted on the sliding frame and abuts against the second low-speed shaft coupling to achieve braking when braking is required.

9. Double-girder bridge crane hoisting unit according to claim 8, characterized in that The first drum is connected to the first drum shaft via a first drum hub and a first gear connecting disc pair.

10. Double-girder bridge crane hoisting unit according to claim 9, characterized in that The second drum is connected to the second drum shaft via a second drum hub and a second gear connecting disc pair.

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