A crane drive

Abstract

This invention relates to a crane drive device, comprising a crossbeam and two sets of main beams. The two sets of main beams are movably mounted on the upper end of the crossbeam and connected to it via connecting rods. Slide rails are mounted on the upper ends of both the crossbeam and the main beams. A first guide rail is mounted on the upper surface of the crossbeam near the outer side of the slide rail, and a second guide rail is mounted on the upper surface of the main beam near the outer side of the slide rail. A drive device is movably mounted on the upper end of the main beam. A groove is formed on the upper end of the main beam, and the slide rail is installed within the groove. Pressure-reducing components are mounted at both ends of the slide rail. First drive auxiliary groups are symmetrically mounted on the left and right sides of the drive device and connected to the output end of the drive device via shafts. This invention solves the problem of pulley slippage in existing bridge cranes.

Description

Technical Field

[0001] This invention relates to the field of crane technology, specifically to a crane drive device. Background Technology

[0002] Bridge cranes are lifting equipment that spans across workshops, warehouses, and material yards for material handling. Because their ends rest on tall concrete pillars or metal supports, they resemble bridges. The bridge frame of a bridge crane runs longitudinally along rails 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 the use of bridge cranes, especially when lifting large tonnage goods, the existing bridge cranes use servo motors to drive pulleys along slide rails. Due to the heavy load, the pulleys of these existing bridge cranes wear out too quickly, resulting in a shortened lifespan of the crane's drive unit. Furthermore, the heavy load places a high load-bearing capacity on the servo motor, which also shortens its lifespan. Secondly, during travel, slippage between the pulleys and slide rails is very likely to occur when the crane stops, posing a certain safety hazard. Slippage is generally caused by impurities and dust on the slide rail surface. To solve these problems, Chinese Patent CN2177... 56591U, a remote-controlled bridge crane, indicates that by setting up a connecting plate, fixing block, fixing rod, connecting frame, drive shaft, drive wheel, sweeping brush and dust collection box, the trolley frame travels along the track on the main beam, and the rolling sweeping brush cleans the upper surface of the track, sweeping dust and other impurities into the dust collection boxes on both sides. Moreover, the dust collection box, drive wheel and sweeping brush can be disassembled, and the dust in the disassembled dust collection box can be cleaned, and the drive wheel and sweeping brush can be inspected and replaced. This mechanism can realize the automatic cleaning and collection of dust and other impurities on the track and prevent the traveling wheel from slipping. Although it can solve the slipping problem, the structure is too cumbersome and the dust collection box needs to be replaced frequently.

[0004] Therefore, in order to solve the problem of pulley slippage, a crane drive device is proposed to overcome the problems and defects in the existing technology. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a crane drive device that solves the problem of pulley slippage in existing bridge cranes.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a crane drive device, comprising a crossbeam and two sets of main beams, the two sets of main beams being movably mounted on the upper end of the crossbeam and connected by connecting rods, both the crossbeam and the main beams having slide rails installed on their upper ends, and a first guide rail being installed on the upper surface of the crossbeam near the outer side of the slide rail, and a second guide rail being installed on the upper surface of the main beam near the outer side of the slide rail, a drive device being movably mounted on the upper end of the main beam, a groove being opened on the upper end of the main beam, the slide rail being installed in the groove, and pressure-reducing components being installed at both ends of the slide rail, and first drive auxiliary components being symmetrically installed on the left and right sides of the drive device and connected to the output end of the drive device via shafts.

[0007] Further, the driving device includes: a mounting plate, a pulley, a first servo motor, a lifting rope, a hook, a second servo motor, a mounting frame, and a roller. The pulley is installed at the lower end of the mounting plate and contacts the surface of the slide rail located at the upper end of the main beam. The first servo motor is installed at the lower end of the mounting plate on the inner side of the pulley, and its output end is connected to the pulley. The second servo motor and the mounting frame are installed at the upper end of the mounting plate. A roller is installed inside the mounting frame, and its roller is connected to the output end of the second servo motor through a shaft. A lifting rope is wound around the surface of the roller, and a hook is installed at the end of the lifting rope.

[0008] Furthermore, the first drive auxiliary group includes: a first connecting plate and a first gear. The first connecting plate is symmetrically fixedly installed on both sides of the mounting plate, and the first gear is movably installed at the lower end of the first connecting plate. The first gear is connected to the pulley through a shaft, and the first gear is in contact with the surface of the second guide rail.

[0009] As a preferred technical solution, retaining rings are fixedly installed at both ends of the slide rail surface.

[0010] Furthermore, a second drive auxiliary component is fixedly installed at both the front and rear ends of the two sets of main beams. The second drive auxiliary component includes a second connecting plate and a second gear. The second connecting plate is fixedly installed at the front and rear ends of the main beam, and a second gear is movably installed at the lower end of the second connecting plate. The second gear is in contact with the surface of the first guide rail.

[0011] As a preferred technical solution, mounting rings for mounting servo motors are symmetrically installed at the connecting rods where the two sets of main beams connect.

[0012] Compared with the prior art, the present invention provides a crane drive device, which has the following beneficial effects:

[0013] 1. See reference Figure 4 and Figure 5As can be seen, since the first drive auxiliary group is connected to the output end of the drive device through a shaft, and as can be seen from the attached figure, its first gear and the second guide rail form a gear mesh. Therefore, even if the pulley and the guide rail slip when the first servo motor stops, the first gear can prevent it from sliding. Thus, this setting solves the problem of slippage that easily occurs when the existing crane drive device stops after operation, and also solves the problem existing in Chinese Patent CN217756591U, a remote control bridge crane.

[0014] 2. Next, refer to Figure 4 and Figure 5 It is evident that the structure involved in this device is simple. Compared with Chinese Patent CN217756591U, a remote-controlled bridge crane, its manufacturing cost is lower, and its maintenance cycle is shorter, which greatly improves the practicality of the device.

[0015] 3. Secondly, according to the explanation in point 1, this device also takes into account that when the first servo motor drives the pulley to rotate, it will exert a reverse thrust on the slide rail. Although the magnitude is very small, since the weight of the goods carried by the crane is heavy, it will cause damage to the pulley and the slide rail. Therefore, this device sets pressure-reducing components (similar to springs) at the front and rear ends of the slide rail, which can reduce the effect of the reverse thrust and thus provide a certain degree of protection for the pulley and the slide rail.

[0016] 4. In conjunction with the first point, the first drive auxiliary component of this device can not only prevent slippage but also distribute the load of the crane, thereby reducing the weight of the goods carried by its drive device to a certain extent, thus reducing the load intensity of its first servo motor and extending the service life of the first servo motor. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of a crane drive device according to the present invention;

[0018] Figure 2 This invention relates to a crane drive device. Figure 1 A magnified view of part A;

[0019] Figure 3 This invention relates to a crane drive device. Figure 1 A magnified view of part B;

[0020] Figure 4 This invention relates to a crane drive device. Figure 1 A magnified view of a portion at point C;

[0021] Figure 5This is a schematic diagram of the structure of a crane drive device and a first drive auxiliary component according to the present invention;

[0022] Figure 6 This is a schematic diagram of the lower end face structure of a crane drive device mounting plate structure according to the present invention;

[0023] Figure 7 This is a schematic diagram of the mounting ring structure of a crane drive device according to the present invention.

[0024] In the diagram: 1. Crossbeam; 2. Main beam; 3. Drive unit; 301. Mounting plate; 302. Pulley; 303. First servo motor; 304. Lifting rope; 305. Hook; 306. Second servo motor; 307. Mounting bracket; 308. Roller; 4. First drive auxiliary component; 401. First connecting plate; 402. First gear; 5. Mounting ring; 6. Second drive auxiliary component; 601. Second connecting plate; 602. Second gear; 7. First guide rail; 8. Slide rail; 9. Retaining ring; 10. Pressure reducing component; 11. Second guide rail; 12. Groove. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] Example

[0027] Please see Figure 1-7 The present invention provides the following technical solution: a crane drive device, comprising a crossbeam 1 and two sets of main beams 2, the two sets of main beams 2 being movably mounted on the upper end of the crossbeam 1 and connected by connecting rods to enhance the stability between the two sets of main beams 2; both the crossbeam 1 and the main beams 2 are equipped with slide rails 8 at their upper ends, and a first guide rail 7 is mounted on the upper end face of the crossbeam 1 near the outer side of the slide rail 8, and a second guide rail 11 is mounted on the upper end face of the main beams 2 near the outer side of the slide rail 8; a drive device 3 is movably mounted on the upper end of the main beams 2; and a groove 12 is formed on the upper end of the main beams 2, through which the slide rails 8 are mounted. When the first servo motor 303 drives the pulley 302 to rotate, it will exert a reverse thrust on the slide rail 8. Although the amplitude is small, it will cause damage to both the pulley 302 and the slide rail 8 because the weight of the goods carried by the crane is heavy. Therefore, pressure reducing components 10 are installed at both ends of the slide rail 8 to reduce the wear between the pulley 302 and the slide rail 8. The first drive auxiliary components 4 are symmetrically installed on the left and right sides of the drive device 3 and are connected to the output end of the drive device 3 through a shaft.

[0028] The specific working principle of this implementation plan is as follows:

[0029] The working principle of its drive device 3 can be found in [reference]. Figure 1 , Figure 4 , Figure 5 and Figure 6 As can be seen, the drive device 3 specifically includes: a mounting plate 301, a pulley 302, a first servo motor 303, a lifting rope 304, a hook 305, a second servo motor 306, a mounting frame 307, and a roller 308. The pulley 302 is installed at the lower end of the mounting plate 301, and its pulley 302 contacts the surface of the slide rail 8 located at the upper end of the main beam 2. The first servo motor 303 is installed at the lower end of the mounting plate 301, corresponding to the inner side of the pulley 302. The first servo motor 303 outputs power... The output end is connected to the pulley 302. The upper end of the mounting plate 301 is equipped with a second servo motor 306 and a mounting bracket 307. The mounting bracket 307 is equipped with a roller 308. The roller 308 is connected to the output end of the second servo motor 306 through a shaft. The surface of the roller 308 is wound with a lifting rope 304. The end of the lifting rope 304 is equipped with a hook 305. The goods are hung on the hook 305, and then the goods can be moved along the slide rail 8 by the first servo motor 303.

[0030] To prevent slippage of the drive unit 3 after it stops, a first drive auxiliary component 4 is provided, details of which can be found in [reference needed]. Figure 4 and Figure 5 As can be seen, the first drive auxiliary component 4 includes: a first connecting plate 401 and a first gear 402. The first connecting plate 401 is symmetrically fixed on both sides of the mounting plate 301. The first gear 402 is movably mounted on the lower end of the first connecting plate 401. The first gear 402 is connected to the pulley 302 through a shaft. The first gear 402 is in contact with the surface of the second guide rail 11. Since the first gear 402 is connected to the pulley 302 through a shaft, and the pulley 302 is connected to the output end of the first servo motor 303, see below. Figure 4 As can be seen, the first gear 402 and the second guide rail 11 are gear meshing transmissions. Therefore, when the first servo motor 303 stops, it can prevent slippage between its pulley 302 and the guide rail 8. This setting not only solves the slippage problem, but also distributes some of the load weight of the goods to the drive device 3, thereby reducing the pressure between its pulley 302 and the guide rail 8 to a certain extent. While extending the service life of the pulley 302, it can also reduce the driving load of its first servo motor 303, thus extending the service life of the first servo motor 303. Moreover, this structure is simple and does not require frequent maintenance.

[0031] To prevent the drive unit 3 from sliding off the slide rail 8, please refer to the following for details. Figure 3A retaining ring 9 is fixedly installed at both ends of the slide rail 8. The retaining ring 9 can limit the movement range of the drive device 3 to the surface of the slide rail 8 between the two sets of retaining rings 9, thereby preventing the drive device 3 from derailing.

[0032] To ensure that the main beam 2 moves in a manner consistent with the effect achieved by the drive device 3, please refer to the following for details. Figure 1 With Figure 2 As can be seen, the front and rear ends of both sets of main beams 2 are fixedly installed with second drive auxiliary components 6. The second drive auxiliary components 6 include a second connecting plate 601 and a second gear 602. The second connecting plate 601 is fixedly installed at the front and rear ends of the main beam 2, and the second gear 602 is movably installed at the lower end of the second connecting plate 601. The second gear 602 is in contact with the surface of the first guide rail 7. The principle of the second drive auxiliary component 6 is the same as that of the first drive auxiliary component 4, so it will not be explained in detail.

[0033] For details on the specific movement method of main beam 2, please refer to [link / reference]. Figure 1 and Figure 7 As can be seen, mounting rings 5 ​​for mounting servo motors are symmetrically installed at the connecting rods where the two sets of main beams 2 connect. It should be noted that since the servo motor used in the drive device 3 is the same motor used for the main beam 2 moving along the slide rail 8 at the upper end of the crossbeam 1, it is not shown in the figure here. The function of the mounting rings 5 ​​is to facilitate the installation of the servo motors, and then drive the pulleys on the lower side of the front and rear ends of the main beam 2 to rotate through the servo motors, thereby completing the movement of the main beam 2.

[0034] The specific workflow of this crane is consistent with that of existing cranes, and its workflow will not be explained further.

[0035] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A crane drive device, comprising a crossbeam (1) and two sets of main beams (2), the two sets of main beams (2) being movably mounted on the upper end of the crossbeam (1) and connected by a connecting rod, both the upper ends of the crossbeam (1) and the main beams (2) being equipped with slide rails (8), and a first guide rail (7) being mounted on the upper end face of the crossbeam (1) near the outer side of the slide rail (8), and a second guide rail (11) being mounted on the upper end face of the main beams (2) near the outer side of the slide rail (8), a drive device (3) being movably mounted on the upper end of the main beams (2), and a groove (12) being provided on the upper end of the main beams (2), characterized in that: The slide rail (8) is installed in the groove (12), and pressure reducing components (10) are installed at both ends of the slide rail (8). The first drive auxiliary components (4) are symmetrically installed on both the left and right sides of the drive device (3) and are connected to the output end of the drive device (3) through a shaft. The drive device (3) includes: a mounting plate (301), a pulley (302), a first servo motor (303), a lifting rope (304), a hook (305), a second servo motor (306), a mounting bracket (307), and a roller (308). The pulley (302) is installed at the lower end of the mounting plate (301), and its pulley (302) contacts the surface of the slide rail (8) located at the upper end of the main beam (2). The lower end of the mounting plate (301) is correspondingly installed on the inner side of the pulley (302). There is a first servo motor (303), the output end of which is connected to a pulley (302). A second servo motor (306) and a mounting bracket (307) are installed on the upper end of the mounting plate (301). A roller (308) is installed inside the mounting bracket (307). The roller (308) is connected to the output end of the second servo motor (306) through a shaft. A lifting rope (304) is wound around the surface of the roller (308). A hook (305) is installed at the end of the lifting rope (304). The first drive auxiliary component (4) includes: a first connecting plate (401) and a first gear (402). The first connecting plate (401) is symmetrically fixed on both sides of the mounting plate (301). The first gear (402) is movably installed at the lower end of the first connecting plate (401). The first gear (402) is connected to the pulley (302) through a shaft. The first gear (402) is in contact with the surface of the second guide rail (11).

2. A crane drive device according to claim 1, characterized in that: Retaining rings (9) are fixedly installed at both ends of the surface of the slide rail (8).

3. A crane drive device according to claim 1, characterized in that: The two sets of main beams (2) are fixedly installed with a second drive auxiliary component (6) at both ends. The second drive auxiliary component (6) includes a second connecting plate (601) and a second gear (602). The second connecting plate (601) is fixedly installed at both ends of the main beam (2). The second gear (602) is movably installed at the lower end of the second connecting plate (601). The second gear (602) is in contact with the surface of the first guide rail (7).

4. A crane drive device according to claim 1, characterized in that: Mounting rings (5) for mounting servo motors are symmetrically installed at the connecting rods where the two sets of main beams (2) are connected.

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