A connection method for the hoisting speed reducer of a metallurgical crane

Abstract

The present invention relates to the technical field of hoisting speed reducers, and specifically to a connection method for a hoisting speed reducer of a metallurgical crane. It includes a first speed reducer, and an upper shell is arranged above the first speed reducer. A breather is arranged at the rear side of the upper end of the upper shell. An input shaft is arranged on one side of the front end of the first speed reducer, and an output shaft is arranged on one side of the rear end of the first speed reducer. One end of the output shaft is connected to a hoisting drum, and on the other side of the rear end of the first speed reducer at the position of the other end of the output shaft, a drum-type coupling is connected. By utilizing the characteristic that the intermediate section of the drum-type coupling can be freely adjusted, the present invention replaces the traditional connection method of two speed reducers through two couplings, a floating shaft, etc., and solves the problem that due to the use of two couplings and an intermediate floating shaft, the distance between the two speed reducers is too large, resulting in an increase in the trolley gauge and an increase in the length of the end beam of the crane, causing waste of steel and space.

Description

Technical Field

[0001] The present invention relates to the technical field of hoisting speed reducers, and specifically to a connection method for a hoisting speed reducer of a metallurgical crane. Background Technique

[0002] A speed reducer is an independent component composed of gear transmission, worm transmission, and gear-worm transmission enclosed in a rigid housing, and is commonly used as a speed reduction transmission device between a prime mover and a working machine. It plays a role in matching the rotational speed and transmitting torque between the prime mover and the working machine or actuator, and is widely used in modern machinery. For example, in the use of ordinary metallurgical cranes, the connection of the hoisting speed reducer of an ordinary metallurgical crane usually adopts the form of two speed reducers through two couplings and a floating shaft, etc.

[0003] However, since the connection form of the hoisting speed reducer of an ordinary metallurgical crane adopts two couplings and an intermediate floating shaft form, it is easy to cause the distance between the two speed reducers to be too large, resulting in an increase in the trolley gauge and an increase in the length of the end beam of the gantry crane, causing waste of steel and space. Therefore, those skilled in the art have provided a connection method for a hoisting speed reducer of a metallurgical crane to solve the problems raised in the above background technique. Summary of the Invention

[0004] The purpose of the present invention is to provide a connection method for a hoisting speed reducer of a metallurgical crane to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A connection method for a hoisting speed reducer of a metallurgical crane, where an upper housing is provided above the first speed reducer, a breather is provided at the rear side of the upper end of the upper housing, an input shaft is provided on one side of the front end of the first speed reducer, and an output shaft is provided on one side of the rear end of the first speed reducer. One end of the output shaft is connected to a hoisting drum, and on the other side of the rear end of the first speed reducer at the position of the other end of the output shaft, a drum coupling is connected. The other end of the drum coupling is connected to a second speed reducer. Inside the first speed reducer, a main worm is fixedly connected to one end of the input shaft, and small tooth rollers are provided on the surface of the main worm.

[0006] As a further solution of the present invention: The main worm is engaged with a first driven worm through small tooth rollers. Small gears adapted to the small tooth rollers are provided on the surface of the first driven worm, and medium tooth rollers are provided on the surface of the first driven worm near the small gears. The main worm is engaged with a second driven worm through the medium tooth rollers. Medium gears adapted to the medium tooth rollers are provided on one end surface of the second driven worm, and large tooth rollers are provided on the other end surface of the second driven worm. The second driven worm is engaged with a secondary worm through the large tooth rollers, and a worm gear adapted to the large tooth rollers is provided on the surface of the secondary worm.

[0007] As a further solution of the present invention: the worm gear, middle gear and small gear have the same structure, and the size of the worm gear is larger than that of the middle gear, and the size of the middle gear is larger than that of the small gear; the large tooth roller, middle tooth roller and small tooth roller have the same structure, and the size of the large tooth roller is larger than that of the middle tooth roller, and the size of the middle tooth roller is larger than that of the small tooth roller.

[0008] As a further solution of the present invention: the worm gear, middle gear and small gear have the same structure, and the size of the worm gear is larger than that of the middle gear, and the size of the middle gear is larger than that of the small gear; the large tooth roller, middle tooth roller and small tooth roller have the same structure, and the size of the large tooth roller is larger than that of the middle tooth roller, and the size of the middle tooth roller is larger than that of the small tooth roller.

[0009] As a further solution of the present invention: the main worm, the first driven worm, the second driven worm and the secondary worm are all located inside the first reducer and are on the same horizontal line, and bearings are provided at both ends of the main worm, the first driven worm, the second driven worm and the secondary worm, and a mounting cover is provided on the side of the first reducer at the position corresponding to the bearing, and the mounting cover is fixedly connected to the first reducer by bolts.

[0010] As a further solution of the present invention: one end of the drum coupling is fixedly connected to the first reducer, and the other end of the drum coupling is fixedly connected to the output end of the second reducer. The first reducer and the second reducer are fixedly connected through the drum coupling, and the first reducer and the second reducer have the same structure.

[0011] Compared with the prior art, the beneficial effects of the present invention are: the present invention designs a connection method for a lifting reducer of a metallurgical crane. In actual operation, the present invention utilizes the freely adjustable characteristics of the intermediate section of the drum coupling to replace the traditional connection method of two reducers through two couplings, floating shafts, etc., which solves the problem that the distance between the two reducers is too large due to the use of two couplings and an intermediate floating shaft, which causes the trolley gauge to increase, the trolley end beam to grow, and the waste of steel and space. It effectively reduces the crane trolley gauge, reduces the weight of the crane, saves resources, and further improves the connection effect and use quality of the two reducers. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a structural diagram of a connection method for a hoisting reducer of a metallurgical crane;

[0013] Figure 2 A top view of a method for connecting a lifting reducer of a metallurgical crane;

[0014] Figure 3It is a schematic diagram of the internal structure of a speed reducer in a connection method of a hoisting speed reducer for a metallurgical crane.

[0015] In the figure: 1. First speed reducer; 2. Upper shell; 3. Input shaft; 4. Hoisting drum; 5. Output shaft; 6. Breather; 7. Drum coupling; 8. Second speed reducer; 9. Main worm; 10. Small tooth roller; 11. First driven worm; 12. Large tooth roller; 13. Worm gear; 14. Mounting cover; 15. Secondary worm; 16. Intermediate gear; 17. Second driven worm; 18. Intermediate tooth roller. Specific implementation mode

[0016] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0017] Please refer to Figures 1 to 3 , in the embodiment of the present invention, for a connection method of a hoisting speed reducer for a metallurgical crane, an upper shell 2 is arranged above the first speed reducer 1, a breather 6 is arranged at the rear side of the upper end of the upper shell 2, an input shaft 3 is arranged on one side of the front end of the first speed reducer 1, and an output shaft 5 is arranged on one side of the rear end of the first speed reducer 1. One end of the output shaft 5 is connected to a hoisting drum 4, and on the other side of the rear end of the first speed reducer 1 at the position of the other end of the output shaft 5, a drum coupling 7 is connected. The other end of the drum coupling 7 is connected to a second speed reducer 8. Inside the first speed reducer 1, a main worm 9 is fixedly connected to one end of the input shaft 3, and a small tooth roller 10 is arranged on the surface of the main worm 9.

[0018] In Figure 3In it, the main worm 9 is engaged and connected to the first driven worm 11 through the small tooth roller 10. A small gear adapted to the small tooth roller 10 is provided on the surface of the first driven worm 11. And a medium tooth roller 18 is provided on the surface of the first driven worm 11 near the small gear. The main worm 9 is engaged and connected to the second driven worm 17 through the medium tooth roller 18. A medium gear 16 adapted to the medium tooth roller 18 is provided on one end surface of the second driven worm 17. And a large tooth roller 12 is provided on the other end surface of the second driven worm 17. And the second driven worm 17 is engaged and connected to a secondary worm 15 through the large tooth roller 12. A worm gear 13 adapted to the large tooth roller 12 is provided on the surface of the secondary worm 15. The worm gears 13, medium gears 16 and small gears have the same structure. And the size of the worm gear 13 is larger than that of the medium gear 16. The size of the medium gear 16 is larger than that of the small gear. The large tooth roller 12, medium tooth roller 18 and small tooth roller 10 have the same structure. And the size of the large tooth roller 12 is larger than that of the medium tooth roller 18. The size of the medium tooth roller 18 is larger than that of the small tooth roller 10. By installing devices such as brakes on the input shaft 3 of the first speed reducer 1 respectively, it is convenient to drive the main worm 9 to rotate. The main worm 9 can drive the small gear to rotate through the engagement of the small tooth roller 10. Then the small gear will drive the first driven worm 11 to rotate. The first driven worm 11 will drive the medium gear 16 to rotate through the engagement of the medium tooth roller 18. Thus the medium gear 16 will drive the second driven worm 17 to rotate. Further, the second driven worm 17 will drive the worm gear 13 to rotate through the large tooth roller 12. Thereby the worm gear 13 will drive the secondary worm 15 to rotate. Finally, the secondary worm 15 will drive the output shaft 5 to rotate. While the output shaft 5 is rotating, it will drive the hoisting drum 4 on its surface to rotate, facilitating the operation of the first speed reducer 1.

[0019] In Figure 3 it, the main worm 9, the first driven worm 11, the second driven worm 17 and the secondary worm 15 are all located inside the first speed reducer 1 and on the same horizontal line. And bearings are provided at both ends of the main worm 9, the first driven worm 11, the second driven worm 17 and the secondary worm 15. Installation covers 14 are provided at the positions corresponding to the bearings on the side surface of the first speed reducer 1. The installation covers 14 are fixedly connected to the first speed reducer 1 by bolts. The parallel design of the main worm 9, the first driven worm 11, the second driven worm 17 and the secondary worm 15 can better perform transmission and avoid the problem of errors in the operation of the output end and the input end of the speed reducer during operation.

[0020] In Figure 3In it, one end of the secondary worm 15 is fixedly connected to the output shaft 5, and a connecting rod is arranged at the other end of the secondary worm 15. The output shaft 5 is fixedly connected to the drum coupling 7 through the secondary worm 15 and the connecting rod. One end of the drum coupling 7 is fixedly connected to the first speed reducer 1, and the other end of the drum coupling 7 is fixedly connected to the output end of the second speed reducer 8. The first speed reducer 1 and the second speed reducer 8 are fixedly connected through the drum coupling 7, and the first speed reducer 1 and the second speed reducer 8 have the same structure. By using the drum coupling 7 to connect the first speed reducer 1 and the second speed reducer 8, since the length of the intermediate section of the drum coupling 7 can be freely adjusted, the gauge of the crane trolley can be effectively reduced, thereby reducing the weight of the crane and reducing unnecessary waste.

[0021] The working principle of the present invention is as follows: When the present invention is actually operated, one end of the output shaft 5 is connected to the hoisting drum 4, and the other end is connected to the second speed reducer 8 through the drum coupling 7, which is convenient for work. By using the input shaft 3 of the first speed reducer 1, devices such as brakes can be respectively installed, so that it is convenient for the main worm 9 to drive the first driven worm 11 to rotate, and then the first driven worm 11 drives the second driven worm 17, and finally the second driven worm 17 drives the secondary worm 15 to rotate. Thus, it can rotate through the input shaft 3 and then drive through the output shaft 5. And the two speed reducers are connected by using the drum coupling 7. By using the characteristic that the intermediate section of the drum coupling 7 can be freely adjusted, it replaces the traditional connection method of two speed reducers through two couplings, floating shafts, etc., and solves the problem that due to the use of two couplings and the intermediate floating shaft form, the distance between the two speed reducers is too large, resulting in an increase in the trolley gauge and an increase in the length of the end beam of the gantry crane, causing waste of steel and space, and further improving the connection effect and service quality of the two speed reducers.

[0022] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claimed rights.

[0023] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A connection method for a hoisting speed reducer of a metallurgical crane. There is an upper shell (2) above the first speed reducer (1). A breather (6) is arranged at the rear side of the upper end of the upper shell (2). It is characterized in that, One side of the front end of the first speed reducer (1) is provided with an input shaft (3), and one side of the rear end of the first speed reducer (1) is provided with an output shaft (5). One end of the output shaft (5) is connected to a hoisting drum (4). On the other side of the rear end of the first speed reducer (1) at the position of the other end of the output shaft (5), a drum coupling (7) is connected. The other end of the drum coupling (7) is connected to a second speed reducer (8). Inside the first speed reducer (1) at one end of the input shaft (3), a main worm (9) is fixedly connected. Small tooth rollers (10) are arranged on the surface of the main worm (9). The main worm (9) is meshed with a first driven worm (11) through the small tooth rollers (10). Small gears adapted to the small tooth rollers (10) are arranged on the surface of the first driven worm (11), and medium tooth rollers (18) are arranged on the surface of the first driven worm (11) close to the small gears. The main worm (9) is meshed with a second driven worm (17) through the medium tooth rollers (18). Medium gears (16) adapted to the medium tooth rollers (18) are arranged on one end surface of the second driven worm (17), and large tooth rollers (12) are arranged on the other end surface of the second driven worm (17). The second driven worm (17) is meshed with a secondary worm (15) through the large tooth rollers (12). A worm wheel (13) adapted to the large tooth rollers (12) is arranged on the surface of the secondary worm (15). One end of the secondary worm (15) is fixedly connected to the output shaft (5), and a connecting rod is arranged at the other end of the secondary worm (15). The output shaft (5) is fixedly connected to the drum coupling (7) through the secondary worm (15) and the connecting rod.

2. A method for connecting a hoisting speed reducer of a metallurgical crane according to claim 1, characterized in that, The worm wheel (13), the medium gear (16) and the small gear have the same structure, and the size of the worm wheel (13) is larger than that of the medium gear (16), and the size of the medium gear (16) is larger than that of the small gear. The large tooth rollers (12), the medium tooth rollers (18) and the small tooth rollers (10) have the same structure, and the size of the large tooth rollers (12) is larger than that of the medium tooth rollers (18), and the size of the medium tooth rollers (18) is larger than that of the small tooth rollers (10).

3. A connection method for a hoisting speed reducer of a metallurgical crane according to claim 1, characterized in that, The main worm (9), the first driven worm (11), the second driven worm (17) and the secondary worm (15) are all inside the first speed reducer (1) and on the same horizontal line, and bearings are arranged at both ends of the main worm (9), the first driven worm (11), the second driven worm (17) and the secondary worm (15). Installation covers (14) are arranged on the side surface of the first speed reducer (1) corresponding to the bearings. The installation covers (14) are fixedly connected to the first speed reducer (1) through bolts.

4. A connection method for the hoisting speed reducer of a metallurgical crane according to claim 1, characterized in that, One end of the drum coupling (7) is fixedly connected to the first speed reducer (1), and the other end of the drum coupling (7) is fixedly connected to the output end of the second speed reducer (8). The first speed reducer (1) and the second speed reducer (8) are fixedly connected through the drum coupling (7), and the first speed reducer (1) and the second speed reducer (8) have the same structure.

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