Crane operating reduction mechanism

Abstract

The application relates to a crane operation deceleration mechanism, which comprises a reducer, the output end of the reducer is connected with the walking wheel of the end beam frame driving end beam, the output end of the reducer is connected with the trolley wheel through corresponding trolley soft shafts, sleeves are arranged on the end beam soft shafts and / or the trolley soft shafts, upper wheel shafts and lower wheel shafts are arranged in the sleeves and used for connecting the two ends of the end beam soft shafts and / or the trolley soft shafts, the end beam soft shafts and the trolley soft shafts are provided with soft shaft heads and fixed disc mouths at the ends, at least one shaft core is arranged in the end beam soft shafts and the trolley soft shafts, the upper wheel shaft, the upper transmission plate, the lower transmission plate and the lower wheel shaft are sequentially arranged in the sleeve from top to bottom, the upper transmission plate and the lower transmission plate are connected in a clamping mode, spherical grooves are arranged on the inner end surfaces, sliding balls are embedded in the spherical grooves, clips are clamped on the upper transmission plate and the lower transmission plate, safety levers are arranged on the clips, disc springs are arranged at the lower ends of the lower transmission plates, pistons are extruded at the lower ends of the disc springs, and fixed plates are extruded at the lower ends of the pistons.

Description

Technical Field

[0001] This invention relates to the field of crane travel deceleration mechanism technology, and in particular to a crane travel deceleration mechanism. Background Technology

[0002] A crane is a multi-action lifting machine that vertically lifts and horizontally moves heavy objects within a certain range. Among them, the 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 the 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 most numerous type of lifting machinery.

[0003] Existing cranes typically require multiple motors: a hoisting motor connected to the drum for lifting, a traveling motor on the trolley for driving the trolley, and a motor on the end beam for driving the end beam. Using multiple motors results in significant resource waste. Installing multiple motors leads to low equipment utilization, and the varying condition and lifespan of the motors after replacement further contribute to equipment waste. If the crane fails, the well-functioning old motors can only be scrapped, which is detrimental to environmental protection and resource utilization. Furthermore, the weight of multiple motors affects the overall counterweight, causing uneven stress on the crane. With increasingly stringent energy conservation and environmental protection requirements, there is an urgent need to develop a new reduction mechanism to address these technical problems in the crane technology field. Utility Model Content

[0004] The purpose of this invention is to provide a crane running deceleration mechanism, which features simple equipment structure, high motor utilization, resource saving, and reduced waste.

[0005] To address the aforementioned problems, the present invention provides a crane running deceleration mechanism, including a reducer, wherein the two coaxial output ends of the reducer are connected to the end beam flexible shaft to drive the traveling wheels of the end beam frame; the reducer is provided with one or two output ends to drive the trolley wheels through corresponding trolley flexible shafts.

[0006] A sleeve is provided on the end beam flexible shaft and / or the trolley flexible shaft; an upper wheel disc shaft and a lower wheel disc shaft are provided inside the sleeve for connecting the two ends of the end beam flexible shaft and / or the trolley flexible shaft; the ends of the end beam flexible shaft and the trolley flexible shaft are provided with flexible shaft heads and fixed disc openings, and at least one shaft core is provided inside the end beam flexible shaft and the trolley flexible shaft.

[0007] The upper wheel shaft, upper transmission plate, lower transmission plate, and lower wheel shaft are arranged sequentially from top to bottom inside the sleeve. The upper and lower transmission plates are fastened together, and the inner end faces of the upper and lower transmission plates are provided with spherical grooves, in which sliding balls are embedded. The upper and lower transmission plates are clamped with clips, and the clips are provided with safety rods.

[0008] The lower end of the lower transmission plate is provided with a disc spring, the lower end of the disc spring is pressed against a piston, and the lower end of the piston is pressed against a fixing plate.

[0009] The technical solution provided in this application also has the following technical features:

[0010] Furthermore, the disc spring is embedded in the sealed cavity, one end of the sealed cavity is provided with a sliding sealing plate, and the piston is embedded in the sliding sealing plate, and a compression spring is provided on the piston.

[0011] Furthermore, the piston or sliding sealing plate is provided with vent holes, the diameter of which is less than one millimeter.

[0012] Furthermore, the flexible shaft head includes at least three gears, each gear being connected to a flexible shaft.

[0013] Furthermore, the upper and lower wheel shafts include gears that mesh with the flexible shaft head.

[0014] Furthermore, the reducer is connected to the flexible shaft of the end beam through two coaxial output ends, which respectively drive the traveling wheels of the end beam frame on both sides.

[0015] Furthermore, the reducer includes a secondary reduction shaft and a tertiary reduction shaft, with gears meshing between the secondary and tertiary reduction shafts. Magnetic adsorption metal disks are provided at both ends of the tertiary reduction shaft, and electromagnets are provided on the flexible shaft of the end beam. Magnetic adsorption metal disks are provided at the output end of the secondary reduction shaft, and electromagnets are provided at the contact end of the corresponding flexible shaft of the trolley.

[0016] Furthermore, the reducer is equipped with an end beam flexible shaft on one side of the trolley flexible shaft, and the electromagnet on the trolley flexible shaft is connected by a connecting rod to form a seesaw, so that the third-stage reduction shaft and the second-stage reduction shaft cannot drive their corresponding flexible shafts at the same time.

[0017] Furthermore, the input end of the reducer is located at the center of the main beam; the reducer is self-symmetrical; the input motor connected to the input end of the reducer is located at the center of the main beam; a sliding groove is provided on the main beam; a sleeve is slidably disposed within the sliding groove; the sleeve is used to fix the flexible shaft of the trolley.

[0018] Furthermore, the input end of the reducer is vertically arranged with the third-stage reduction shaft and the second-stage reduction shaft. The reducer drives the transition gear shaft through bevel gear meshing, and the transition gear shaft, the second-stage reduction shaft, and the third-stage reduction shaft are sequentially driven by gear meshing.

[0019] The present invention has the following beneficial effects:

[0020] 1. This invention utilizes a single motor to drive input and generate multiple outputs. Furthermore, the traveling wheels at both ends of the end beam can be synchronously driven by dual flexible shafts, and the trolley also uses a flexible shaft drive. This saves on the number of motors, reduces equipment layout, and reduces weight and motor quantity, thereby saving costs, improving equipment utilization, and avoiding resource waste such as scrapping.

[0021] 2. The invention utilizes a flexible shaft drive, which can effectively change the above arrangement, making it convenient to set at the center of the main beam, thus achieving self-symmetry and reducing the need for counterweights and other measures. In addition, the flexible shaft drive can reduce the number of motors, thereby lowering operating and manufacturing costs, reducing maintenance costs, and increasing equipment utilization.

[0022] 3. This invention utilizes a lower transmission plate, an upper transmission plate, and a sliding ball to form a connection structure for a flexible shaft. This structure prevents the flexible shaft from being overloaded and damaged during rotational drive. Furthermore, by utilizing the characteristic of the sliding ball embedding into the lower and upper transmission plates during the compression process, a locking drive is achieved. This application also utilizes clips set on the upper and lower transmission plates, and the clips are equipped with safety rods to achieve a corresponding connection strength. The structure is simple, the cost is low, and the effect is good. Attached Figure Description

[0023] Figure 1 This is a front view of a crane running deceleration mechanism according to an embodiment of the present invention;

[0024] Figure 2 This is a top view of a crane running deceleration mechanism according to an embodiment of the present invention;

[0025] Figure 3 for Figure 1 A cross-sectional view along the AA direction;

[0026] Figure 4 This is a cross-sectional view of a reducer in a crane running deceleration mechanism according to an embodiment of the present invention;

[0027] Figure 5 for Figure 3 A magnified view of a section at point B in the middle;

[0028] Figure 6 This is a schematic diagram of the end beam flexible shaft and trolley flexible shaft of a crane running deceleration mechanism according to an embodiment of the present invention;

[0029] Figure 7 This is a schematic diagram of the clamp installation structure of a crane running deceleration mechanism according to an embodiment of the present invention;

[0030] Figure 8This is a perspective view of the upper transmission plate of a crane running deceleration mechanism according to an embodiment of the present invention;

[0031] Figure 9 This is a perspective view of a clamp for a crane running deceleration mechanism according to an embodiment of the present invention;

[0032] In the diagram: 1. Main beam; 2. End beam flexible shaft; 3. Protective sleeve; 4. Trolley track; 5. Reducer; 6. Input motor; 7. Trolley flexible shaft; 8. End beam frame; 9. Sleeve; 10. Slide groove; 11. Trolley wheel; 12. Three-stage reduction shaft; 13. Electromagnet; 14. Two-stage reduction shaft; 15. Motor shaft; 16. Friction pad; 17. Connecting rod; 18. Clamp; 19. Sliding ball; 20. Disc spring; 21. Fixed plate; 22. Piston; 23. Lower transmission plate; 24. Upper transmission plate; 25. Cable housing; 26. Flexible shaft head; 27. Fixed disc; 28. Slot; 29. ​​Spherical groove; 30. Safety bar; 31. Sliding sealing plate; 91. Upper wheel disc shaft; 92. Lower wheel disc shaft. Detailed Implementation

[0033] The present invention will be described in detail below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in the embodiments of the present invention can be combined with each other.

[0034] like Figure 1-9 The crane running speed reduction mechanism shown includes a speed reducer 5. The two coaxial output ends of the speed reducer 5 are connected to the end beam flexible shaft 2 to drive the traveling wheels of the end beam frame 8. The speed reducer 5 is provided with one or two output ends to drive the trolley wheels 11 through the corresponding trolley flexible shaft 7.

[0035] A sleeve 9 is provided on the end beam flexible shaft 2 and / or the trolley flexible shaft 7; an upper wheel shaft 91 and a lower wheel shaft 92 are provided inside the sleeve 9 for connecting the two ends of the end beam flexible shaft 2 and / or the trolley flexible shaft 7; a flexible shaft head 26 and a fixed disc 27 are provided at the ends of the end beam flexible shaft 2 and the trolley flexible shaft 7, and at least one shaft core is provided inside the end beam flexible shaft 2 and the trolley flexible shaft 7;

[0036] The upper wheel shaft 91, upper transmission plate 24, lower transmission plate 23, and lower wheel shaft 92 are arranged sequentially from top to bottom inside the sleeve 9. The upper transmission plate 24 and lower transmission plate 23 are interlocked, and the inner end faces of the upper transmission plate 24 and lower transmission plate 23 are provided with spherical grooves 29, and sliding balls 19 are embedded in the spherical grooves 29. The upper transmission plate 24 and lower transmission plate 23 are clamped with clips 18, and safety rods 30 are provided on the clips 18.

[0037] A disc spring 20 is provided at the lower end of the lower transmission plate 23, and a piston 22 is pressed at the lower end of the disc spring 20. A fixing plate 21 is pressed at the lower end of the piston 22.

[0038] When implementing this application, the key points are as follows:

[0039] 1. This invention utilizes a single motor to drive input and generate multiple outputs. Furthermore, the traveling wheels at both ends of the end beam can be synchronously driven by dual flexible shafts, and the trolley also uses a flexible shaft drive. This saves on the number of motors, reduces equipment layout, and reduces weight and motor quantity, thereby saving costs, improving equipment utilization, and avoiding resource waste such as scrapping.

[0040] 2. The invention utilizes a flexible shaft drive, which can effectively change the above arrangement and facilitate its placement at the center of the main beam 1, making it self-symmetrical. The need for counterweights and other measures can be reduced accordingly. In addition, the flexible shaft drive can reduce the number of motors, thereby lowering operating and manufacturing costs, reducing maintenance costs, and increasing equipment utilization.

[0041] 3. The reducer 5 created in this invention is connected to the end beam flexible shaft 2 through two coaxial output ends, which respectively drive the walking wheels of the end beam frame 8 on both sides; the dual drive is adopted to avoid asynchrony on both sides and make the end beam walk synchronously, thus meeting the usage requirements.

[0042] 4. The reducer 5 of this invention is also provided with an output end that drives the trolley wheels 11 through the trolley flexible shaft 7. The difference between the resistance of the end beam traveling wheels and the resistance of the trolley wheels 11 is that the end beam traveling wheels have the weight of the main beam and the end beam compared to the trolley traveling wheels. At the same time, there are more end beam traveling wheels and the track is a double track. In this way, the frictional resistance of the end beam traveling wheels and the trolley traveling wheels is equivalent. Therefore, the power to drive the end beam traveling wheels can also meet the driving needs of the trolley wheels. Moreover, according to the requirements of crane operation, during the lifting process, the main beam moves and the trolley moves separately. The lifting and lowering operations require that the trolley cannot move and the lifting and lowering operations must be completed at a stationary position. After the lifting is completed, the trolley or the main beam can be moved, but the two do not move at the same time. Therefore, the flexible shaft drive of this invention can meet multiple output requirements.

[0043] 5. The reducer 5 created by the present invention is also provided with two output ends that drive the car wheels 11 through two car flexible shafts 7 respectively. The symmetrical structure driving makes the car wheels 11 run smoothly, with good stability and convenient use.

[0044] In one embodiment of this application, the disc spring 20 is embedded in the sealed cavity, a sliding sealing plate 31 is provided at one end of the sealed cavity, and the piston 22 is embedded in the sliding sealing plate 31. A compression spring is provided on the piston 22. Through this structure, the negative pressure adsorption effect of the sealed air pressure is utilized to mitigate the impact force. At the same time, after the impact and extrusion, the slow return is achieved by utilizing the characteristic of slow gas replenishment.

[0045] In one embodiment of this application, the piston 22 or the sliding sealing plate 31 is provided with a vent hole, the diameter of which is less than one millimeter; by utilizing the structural characteristics of the small hole, slow air intake is achieved, thus reducing the movement.

[0046] In one embodiment of this application, the flexible shaft head 26 includes at least three gears, each gear connected to a flexible shaft; the structure is simple and the design is ingenious, solving the problem of multi-axis joint transmission.

[0047] In one embodiment of this application, the upper wheel shaft 91 and the lower wheel shaft 92 include gears that mesh with the flexible shaft head 26; the structure is simple, the cost is low, and the effect is good.

[0048] In one embodiment of this application, the reducer 5 is connected to the end beam flexible shaft 2 through two coaxial output ends, which respectively drive the walking wheels of the end beam frame 8 on both sides; the structure is simple, the cost is low, and the effect is good.

[0049] In one embodiment of this application, the reducer 5 includes a secondary reduction shaft 14 and a tertiary reduction shaft 12, with gears meshing between the secondary reduction shaft 14 and the tertiary reduction shaft 12. Electromagnets 13 selectively attract and adhere to both ends of the tertiary reduction shaft 12, thereby frictionally driving the flexible shaft 2 of the end beam. The secondary reduction shaft 14 is similar to the above, frictionally driving the flexible shaft 7 of the trolley. By using electromagnets 13 to control the attraction and friction, selective driving of which shaft is achieved, the structure is simple, easy to set up, and has good effect.

[0050] In one embodiment of this application, the reducer 5 is equipped with an end beam flexible shaft 2 on one side of the trolley flexible shaft 7, and the electromagnet 13 on the trolley flexible shaft 7 is connected by a connecting rod 17 to form a seesaw so that the third-stage reduction shaft 12 and the second-stage reduction shaft 14 cannot drive their corresponding flexible shafts at the same time; this avoids malfunctions and misaligned simultaneous driving, which could lead to operational risks.

[0051] In one embodiment of this application, the input end of the reducer 5 is located at the center of the main beam 1; this facilitates its counterweight and avoids eccentricity.

[0052] In one embodiment of this application, the reducer 5 is self-symmetrical; multiple gears can be used to make it symmetrical at the center of gravity, thus making the reducer 5 itself a self-symmetrical structure, which is convenient for installation and does not require additional counterweight.

[0053] In one embodiment of this application, the input motor 6 connected to the input end of the reducer 5 is located at the center of the main beam 1. A slide groove 10 is provided on the main beam 1, and a sleeve 9 is slidably disposed in the slide groove 10. The sleeve 9 is used to fix the trolley flexible shaft 7. By using the motor located at the center of the main beam 1, it is self-symmetrical and no additional counterweight is required. The sleeve 9 and the slide groove 10 are used to allow the trolley flexible shaft 7 to move as needed, making it convenient to operate.

[0054] In one embodiment of this application, the input end of the reducer 5 is vertically arranged between the third-stage reduction shaft 12 and the second-stage reduction shaft 14. The reducer 5 drives the transition gear shaft through bevel gear meshing. The transition gear shaft, the second-stage reduction shaft 14, and the third-stage reduction shaft 12 are sequentially driven by gear meshing. The transmission of this structure utilizes bevel gear transmission, making it more compact, with a simple technical route and easy implementation.

[0055] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A crane running speed reduction mechanism, comprising a speed reducer (5), characterized in that: The two coaxial output ends of the reducer (5) are connected to the end beam flexible shaft (2) to drive the walking wheels of the end beam frame (8); the reducer (5) is provided with one or two output ends to drive the trolley wheels (11) through the corresponding trolley flexible shaft (7). A sleeve (9) is provided on the end beam flexible shaft (2) and / or the trolley flexible shaft (7); an upper wheel disc shaft (91) and a lower wheel disc shaft (92) are provided inside the sleeve (9) for connecting the two ends of the end beam flexible shaft (2) and / or the trolley flexible shaft (7); a flexible shaft head (26) and a fixed disc opening (27) are provided at the ends of the end beam flexible shaft (2) and the trolley flexible shaft (7), and at least one shaft core is provided inside the end beam flexible shaft (2) and the trolley flexible shaft (7); The upper wheel shaft (91), upper transmission plate (24), lower transmission plate (23), and lower wheel shaft (92) are arranged sequentially from top to bottom in the sleeve (9). The upper transmission plate (24) and lower transmission plate (23) are fastened together, and the inner end faces of the upper transmission plate (24) and lower transmission plate (23) are provided with spherical grooves (29), and sliding balls (19) are embedded in the spherical grooves (29). The upper transmission plate (24) and lower transmission plate (23) are clamped with clips (18), and safety bars (30) are provided on the clips (18). The lower end of the lower transmission plate (23) is provided with a disc spring (20), the lower end of the disc spring (20) is pressed with a piston (22), and the lower end of the piston (22) is pressed with a fixing plate (21).

2. The crane travel reduction mechanism according to claim 1, characterized in that: The disc spring (20) is embedded in the sealed cavity, and a sliding sealing plate (31) is provided at one end of the sealed cavity. The piston (22) is embedded in the sliding sealing plate (31), and a compression spring is provided on the piston (22).

3. A crane travel deceleration mechanism according to claim 2, characterized in that: The piston (22) or sliding sealing plate (31) is provided with a vent hole, the diameter of which is less than one millimeter.

4. A crane travel deceleration mechanism according to claim 1, characterized in that: The flexible shaft head (26) contains at least three gears, each gear being connected to a flexible shaft.

5. A crane travel deceleration mechanism according to claim 1, characterized in that: The upper wheel shaft (91) and lower wheel shaft (92) contain gears that mesh with the flexible shaft head (26).

6. A crane travel deceleration mechanism according to claim 1, characterized in that: The reducer (5) includes a secondary reduction shaft (14) and a tertiary reduction shaft (12). Gears mesh between the secondary reduction shaft (14) and the tertiary reduction shaft (12). Magnetic adsorption metal disks are provided at both ends of the tertiary reduction shaft (12). Electromagnets (13) are provided on the end beam flexible shaft (2). Magnetic adsorption metal disks are provided at the output end of the secondary reduction shaft (14). Electromagnets are provided at the contact end of the corresponding trolley flexible shaft (7).

7. A crane travel deceleration mechanism according to claim 6, characterized in that: The reducer (5) is equipped with an end beam flexible shaft (2) on one side of the trolley flexible shaft (7). The electromagnet (13) on the trolley flexible shaft (7) is connected by a connecting rod (17) to form a seesaw so that the third-stage reduction shaft (12) and the second-stage reduction shaft (14) cannot drive their corresponding flexible shafts at the same time.

8. A crane travel deceleration mechanism according to claim 1, characterized in that: The input end of the reducer (5) is located at the center of the main beam (1); the reducer (5) is self-symmetrical; the input motor (6) connected to the input end of the reducer (5) is located at the center of the main beam (1); a slide groove (10) is provided on the main beam (1); a sleeve (9) is slidably provided in the slide groove (10); and the sleeve (9) is used to fix the trolley flexible shaft (7).

9. A crane travel deceleration mechanism according to claim 1, characterized in that: The input end of the reducer (5) is vertically set with the third-stage reduction shaft (12) and the second-stage reduction shaft (14). The reducer (5) drives the transition gear shaft through bevel gear meshing. The transition gear shaft, the second-stage reduction shaft (14), and the third-stage reduction shaft (12) are driven by gear meshing in sequence.

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