Transmission device of tower crane hoisting mechanism

Abstract

The utility model provides a tower crane hoisting mechanism transmission device which comprises a transmission assembly and a rotating plate, the transmission assembly is composed of a box body, the rotating plate, a supporting plate and a fixing assembly, the supporting plate and the fixing assembly are both fixedly connected in the box body, the rotating plate is movably connected in a rotating groove formed in the fixing assembly, and the rotating plate is fixedly connected in the box body. The side, close to the brake motor, of the rotating plate is fixedly connected with a gear ring, the gear ring is meshed with a driving wheel, and movable grooves are symmetrically formed in the arc face of the rotating plate and internally and movably connected with roller shafts through bearings. The lower end of the outer side face of the box body is movably connected with a rotating shaft of a brake motor through a sealing bearing. Through cooperation of the box body, the fixing assembly, the rotating plate, the partition plate and the gear ring, the whole transmission device is of an I-shaped structure, then the size of the space occupied by the transmission device can be effectively reduced, and meanwhile the transmission device can assist in reducing the frequency of later maintenance.

Description

Technical Field

[0001] The utility model relates to the technical field of tower crane hoisting mechanisms, in particular to a tower crane hoisting mechanism transmission device. Background Art

[0002] The lifting mechanism of a tower crane, also called the "lifting mechanism", is a basic component of a tower crane for lifting and lowering objects. The lifting mechanism drives the drum to rotate through a lifting motor via a coupling and a hollow shaft of a reducer, thereby causing the wire rope / cable wound around the drum to drive the hook device to rise or fall.

[0003] After searching, a transmission device for a lifting mechanism disclosed in the prior art (application number: CN201821576256.7) is recorded in the text as "including a driving motor, a reducer and a rotatable support shaft, the reducer includes a box body, a first shaft body and a second shaft body rotatably arranged in the box body, and a reduction wheel set respectively installed on the first shaft body and the second shaft body and cooperating with each other, the driving motor is installed on the outer side of the box body, the output shaft of the driving motor is connected to the first shaft body, the rotation axis of the output shaft of the driving motor is collinearly arranged with the rotation axis of the first shaft body, the second shaft body is connected to one end of the support shaft, the other end of the support shaft is used to connect to an external reel, and the rotation axis of the second shaft body is collinearly arranged with the rotation axis of the support shaft."; the device directly installs the driving motor in the box body. The second shaft of the reducer is connected to the drum via the supporting shaft, so that the rotation axis of the second shaft is colinear with the rotation axis of the supporting shaft, thereby avoiding the connection reliability between the transmission shaft system affected by the coaxiality deviation between the output shaft of the drive motor and the first shaft, and between the second shaft and the drum, thereby improving the transmission efficiency of the power transmission device. However, the lifting mechanism is located at the rear arm of the tower crane, and the space on the rear arm of the tower crane is tight. The maintenance of the lifting mechanism is high-altitude operation, and the device as a whole is a traditional "π" type mechanism, which occupies a large space in a very compact space on the rear arm of the tower crane, resulting in low space utilization on the rear arm of the tower crane, and also causing inconvenience to the daily maintenance of the tower crane transmission device. Utility Model Content

[0004] In order to overcome the defects of the prior art, a tower crane lifting mechanism transmission device is provided to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, a tower crane lifting mechanism transmission device is provided, comprising: a transmission component and a rotating plate, the output shaft on one side of the transmission component is connected to the winding component through a connecting piece, and the other side of the transmission component is fixedly connected to the brake motor, and the rotating shaft of the brake motor is fixedly connected to the driving wheel, the transmission component is composed of a box, a rotating plate, a support plate and a fixed component, and the support plate and the fixed component are both fixedly connected in the box, and the rotating plate is movably connected in a rotating groove opened in the fixed component, and the rotating plate is fixedly connected to a gear ring on one side of the rotating plate close to the brake motor, the gear ring meshes with the driving wheel, and the other side of the rotating plate is fixedly connected to the transmission shaft, and at the same time, the upper end of the support plate is movably connected to the transmission shaft through a bearing, and the transmission shaft is fixedly connected to the main transmission wheel at one end away from the rotating plate, and the output shaft is movably connected to the upper end of the side surface of the box through a bearing, and the end of the output shaft located in the box is fixedly connected to the auxiliary transmission wheel, and the auxiliary transmission wheel meshes with the main transmission wheel, and the rotating plate has a movable groove symmetrically provided on the circular arc surface, and the roller shaft is movably connected in the movable groove through the bearing, and the bottom of the box cavity is fixedly connected to the position of the fixed component, and the lower end of the outer side surface of the box body is movably connected to the rotating shaft of the brake motor through a sealed bearing.

[0006] Preferably, the fixing assembly consists of an upper fixing plate and a lower fixing plate, and both the upper fixing plate and the lower fixing plate are in a U-shaped structure, and the inner cavities of the upper fixing plate and the lower fixing plate are in a semicircular structure, and the rotating groove opened on the inner side of the fixing assembly is adapted to the size of the rotating plate.

[0007] Preferably, the two ends of the lower surface of the upper fixing plate are respectively and parallelly fixedly connected with multiple groups of positioning rods at equal intervals, and the positioning rods are all cylindrical structures. At the same time, screw holes are symmetrically opened at the upper ends of the side surfaces of the upper fixing plate, and the box body is fixedly connected to the upper fixing plate by bolts.

[0008] Preferably, positioning holes are provided at both ends of the upper surface of the lower fixing plate corresponding to the positions of the positioning rod, and the sizes of the positioning rod and the positioning hole are matched, and the lower fixing plate is fixedly connected to the bottom of the box body, and at the same time, multiple groups of through holes are provided at both ends of the lower surface of the lower fixing plate in parallel and at equal intervals, and the through holes have a semi-cylindrical structure.

[0009] Preferably, the rotating plate has a circular structure, and a plurality of movable grooves are provided at equal intervals along the circumferential direction on the arc surface of the rotating plate, and the movable grooves are overall rectangular in structure, while the bottom of the movable grooves is an arc-shaped structure, and the roller shaft movably connected in the movable grooves is a cylindrical structure.

[0010] Preferably, the partition plate fixedly connected in the box body has an L-shaped cross-section, and the bent portion of the partition plate has a convex structure, and the protruding part of the bent portion of the partition plate fits the surface of the rotating plate. At the same time, a lubrication cavity is divided into two parts by the partition plate on the side of the box body close to the brake motor, and the lubrication cavity is filled with lubricating oil.

[0011] Preferably, the support plate is of a rectangular structure, the transmission shaft movably connected to the upper end of the support plate is of a cylindrical structure, and the support plate and the transmission shaft are combined together to form a T-shaped structure, and the size of the main transmission wheel is smaller than that of the auxiliary transmission wheel.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows: through the setting of the transmission component, an "I"-shaped structure can be formed between the winding component, the transmission component and the brake motor, which can effectively reduce the space occupied by the transmission device on the rear arm of the tower crane, and can also help improve the space utilization rate on the rear arm of the tower crane. At the same time, through the cooperation of the fixed component, the partition plate, the rotating plate, the ring gear, the driving wheel and the brake motor, the rotating ring gear, the driving wheel and the rotating plate can be lubricated accordingly in the box of the transmission component, which helps reduce the noise of the transmission device during operation, and can also help reduce the frequency of daily maintenance and maintenance of the transmission device by workers. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is an overall front view schematic diagram of an embodiment of the utility model.

[0014] Figure 2 It is a front view schematic diagram of a transmission assembly according to an embodiment of the utility model.

[0015] Figure 3 It is a side view schematic diagram of a transmission assembly according to an embodiment of the utility model.

[0016] Figure 4 For the utility model embodiment Figure 2 An enlarged schematic diagram of point A.

[0017] In the figure: 1. Winding assembly; 2. Transmission assembly; 3. Brake motor; 4. Driving wheel; 5. Ring gear; 6. Partition plate; 7. Support plate; 8. Rotating plate; 9. Transmission shaft; 10. Main transmission wheel; 11. Output shaft; 12. Auxiliary transmission wheel; 13. Fixing assembly; 14. Box body; 15. Lower fixing plate; 16. Roller shaft; 17. Positioning rod; 18. Upper fixing plate. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] Reference Figures 1 to 4As shown, the utility model provides a transmission device of a tower crane hoisting mechanism, including: a transmission component 2 and a rotating plate 8, an output shaft 11 on one side of the transmission component 2 is connected to the winding component 1 through a connecting piece, and the other side of the transmission component 2 is fixedly connected to the brake motor 3, and the rotating shaft of the brake motor 3 is fixedly connected to the driving wheel 4, the transmission component 2 is composed of a box body 14, a rotating plate 8, a support plate 7 and a fixed component 13, and the support plate 7 and the fixed component 13 are both fixedly connected in the box body 14, and the rotating plate 8 is movably connected in a rotating groove provided in the fixed component 13, and the side of the rotating plate 8 close to the brake motor 3 is fixedly connected to the ring gear 5, the ring gear 5 meshes with the driving wheel 4, and rotates The other side of the plate 8 is fixedly connected to the transmission shaft 9, and at the same time, the upper end of the support plate 7 is movably connected to the transmission shaft 9 through a bearing, and the end of the transmission shaft 9 away from the rotating plate 8 is fixedly connected to the main transmission wheel 10, and the output shaft 11 is movably connected to the upper end of the side of the box body 14 through a bearing, and the end of the output shaft 11 located in the box body 14 is fixedly connected to the auxiliary transmission wheel 12, and the auxiliary transmission wheel 12 engages with the main transmission wheel 10. The rotating plate 8 has movable grooves symmetrically provided on the arc surface, and the roller shaft 16 is movably connected in the movable groove through a bearing, and the bottom of the inner cavity of the box body 14 is fixedly connected to the partition plate 6 near the fixed component 13, and the lower end of the outer side surface of the box body 14 is movably connected to the rotating shaft of the brake motor 3 through a sealed bearing.

[0020] In this embodiment, when it is necessary to start the tower crane lifting mechanism, the switch of the brake motor 3 is started, and the rotating shaft of the brake motor 3 drives the driving wheel 4 to rotate, and the driving wheel 4 drives the rotating plate 8 to rotate synchronously through the meshing ring gear 5, and then the rotating plate 8 drives the main transmission wheel 10 to rotate synchronously through the fixedly connected transmission shaft 9, and the main transmission wheel 10 drives the output shaft 11 to rotate synchronously through the meshing secondary transmission wheel 12, so the output shaft 11 can drive the winding assembly 1 to rotate accordingly through the connecting piece, thereby realizing the operation of the tower crane lifting mechanism, wherein during the mutual meshing transmission of the ring gear 5 and the driving wheel 4, the meshing part of the ring gear 5 and the driving wheel 4 is immersed in the lubricating oil, which can then help enhance the lubrication effect between the two, and can also help reduce the wear rate of the driving wheel 4 and the ring gear 5, and then can help reduce the frequency of daily maintenance and maintenance of the transmission device of the tower crane lifting mechanism to ensure the personal safety of workers.

[0021] As a preferred embodiment, the fixing assembly 13 is composed of an upper fixing plate 18 and a lower fixing plate 15, and the upper fixing plate 18 and the lower fixing plate 15 are both in a U-shaped structure, and the inner cavities of the upper fixing plate 18 and the lower fixing plate 15 are both in a semicircular structure, and the rotating groove opened on the inner side of the fixing assembly 13 is adapted to the size of the rotating plate 8.

[0022] In this embodiment, if Figure 2 and Figure 3The sizes of the rotating groove and the rotating plate 8 are matched, which can effectively enhance the stability of the rotating plate 8 during rotation, thereby assisting in enhancing the meshing effect of the ring gear 5 and the driving wheel 4.

[0023] As a preferred embodiment, the two ends of the lower surface of the upper fixing plate 18 are respectively and parallelly fixedly connected with multiple groups of positioning rods 17 at equal intervals, and the positioning rods 17 are all cylindrical structures. At the same time, screw holes are symmetrically opened on the upper ends of the side surfaces of the upper fixing plate 18, and the box body 14 is fixedly connected to the upper fixing plate 18 by bolts.

[0024] In this embodiment, if Figure 2 and Figure 3 The upper fixed plate 18 is fixedly connected to the box body 14 by bolts, which can help reduce the difficulty of loading and unloading the rotating plate 8. The distance between the ring gear 5 and the inner side of the box body 14 can be adjusted accordingly according to actual needs. At the same time, the setting of the positioning rod 17 can improve the efficiency of loading and unloading the upper fixed plate 18 and the lower fixed plate 15.

[0025] As a preferred embodiment, positioning holes are opened at both ends of the upper surface of the lower fixing plate 15 corresponding to the positions of the positioning rod 17, and the sizes of the positioning rod 17 and the positioning holes are matched, and the lower fixing plate 15 is fixedly connected to the bottom of the box body 14. At the same time, multiple groups of through holes are opened at both ends of the lower surface of the lower fixing plate 15 in parallel and at equal intervals, and the through holes have a semi-cylindrical structure.

[0026] In this embodiment, if Figure 2 , Figure 3 and Figure 4 The sizes of the positioning rod 17 and the positioning hole are matched, which can help enhance the stability of the connection between the upper fixing plate 18 and the lower fixing plate 15. At the same time, the opening of the through hole allows the lubricating oil on both sides of the fixed component 13 to be interconnected, thereby helping enhance the lubrication and cooling effect of the lubricating oil on the rotating plate 8, the ring gear 5 and the driving wheel 4.

[0027] As a preferred embodiment, the rotating plate 8 has a circular structure, and a plurality of movable grooves are provided at equal intervals along the circumferential direction on the arc surface of the rotating plate 8. The movable grooves are overall rectangular in structure, and the bottom of the movable grooves is an arc-shaped structure. At the same time, the roller shaft 16 movably connected in the movable grooves is a cylindrical structure.

[0028] In this embodiment, if Figure 2 , Figure 3 and Figure 4 The roller 16 movably connected to the arc surface of the rotating plate 8 through the movable groove can effectively reduce the friction resistance encountered by the rotating plate 8 when rotating in the rotating groove, thereby reducing the probability of excessive heat accumulation between the fixed component 13 and the rotating plate 8.

[0029] As a preferred embodiment, the partition plate 6 fixedly connected in the box body 14 has an L-shaped cross-section, and the bent portion of the partition plate 6 has a convex structure, and the protruding portion of the bent portion of the partition plate 6 fits into the surface of the rotating plate 8. At the same time, a lubrication cavity is divided into two parts by the partition plate 6 on the side of the box body 14 close to the brake motor 3, and the lubrication cavity is filled with lubricating oil.

[0030] In this embodiment, if Figure 2 and Figure 3 The structural setting of the partition plate 6 can not only limit the lubricating oil in the box body 14 to a specific position to reduce unnecessary loss of lubricating oil, but also clean the lubricating oil carried by the rotating plate 8 during rotation, thereby reducing the amount of lubricating oil attached to the surface of the rotating plate 8 and further reducing the loss rate of the lubricating oil.

[0031] As a preferred embodiment, the support plate 7 has a rectangular structure, the transmission shaft 9 movably connected to the upper end of the support plate 7 has a cylindrical structure, and the support plate 7 and the transmission shaft 9 are combined together to form a T-shaped structure, and the size of the main transmission wheel 10 is smaller than that of the auxiliary transmission wheel 12.

[0032] In this embodiment, if Figure 2 The size setting of the main transmission wheel 10 and the auxiliary transmission wheel 12 enables the transmission device to decelerate the rotation speed of the brake motor 3 multiple times, thereby helping to enhance the stability of the tower crane lifting mechanism during operation. At the same time, the setting of the support plate 7 can help enhance the stability of the rotation of the transmission shaft 9 in the box body 14.

[0033] The transmission device of the tower crane hoisting mechanism of the utility model is made into an I-shaped structure as a whole through the cooperation of the box body 14, the fixing assembly 13, the rotating plate 8, the partition plate 6 and the gear ring 5, which can effectively reduce the size of the space occupied by the transmission device and improve the space utilization rate on the rear arm of the tower crane. At the same time, it can also help reduce the frequency of the later maintenance of the transmission device and ensure the personal safety of the workers.

[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A tower crane hoisting mechanism transmission device, comprising: A transmission component (2) and a rotating plate (8), wherein an output shaft (11) on one side of the transmission component (2) is connected to a winding component (1) via a connecting piece, and the other side of the transmission component (2) is fixedly connected to a brake motor (3), and the rotating shaft of the brake motor (3) is fixedly connected to a driving wheel (4), characterized in that: the transmission component (2) is composed of a box body (14), a rotating plate (8), a support plate (7) and a fixed component (13), and the support plate (7) and the fixed component (13) are both fixedly connected in the box body (14), and the rotating plate (8) is movably connected in a rotating groove provided in the fixed component (13), and the side of the rotating plate (8) close to the brake motor (3) is fixedly connected to a gear ring (5), the gear ring (5) meshes with the driving wheel (4), and the other side of the rotating plate (8) The transmission shaft (9) is fixedly connected, and the upper end of the support plate (7) is movably connected to the transmission shaft (9) through a bearing, and the end of the transmission shaft (9) away from the rotating plate (8) is fixedly connected to the main transmission wheel (10), and the output shaft (11) is movably connected to the upper end of the side of the box body (14) through a bearing, and the end of the output shaft (11) located in the box body (14) is fixedly connected to the auxiliary transmission wheel (12), and the auxiliary transmission wheel (12) engages with the main transmission wheel (10), and the rotating plate (8) is symmetrically provided with movable grooves on the arc surface, and the movable groove is movably connected to the roller shaft (16) through a bearing, and the bottom of the inner cavity of the box body (14) is fixedly connected to the partition plate (6) near the fixed component (13). The lower end of the outer side surface of the box body (14) is movably connected to the rotating shaft of the brake motor (3) through a sealed bearing.

2. A tower crane hoisting mechanism transmission device according to claim 1, characterized in that: The fixing assembly (13) is composed of an upper fixing plate (18) and a lower fixing plate (15), and the upper fixing plate (18) and the lower fixing plate (15) are both in a U-shaped structure, and the inner cavities of the upper fixing plate (18) and the lower fixing plate (15) are both in a semicircular structure, and the rotating groove provided on the inner side surface of the fixing assembly (13) is adapted to the size of the rotating plate (8).

3. A tower crane hoisting mechanism transmission device according to claim 2, characterized in that: The two ends of the lower surface of the upper fixing plate (18) are respectively and parallelly fixedly connected to a plurality of groups of positioning rods (17) at equal intervals, and the positioning rods (17) are all cylindrical in structure. At the same time, screw holes are symmetrically provided at the upper ends of the side surfaces of both sides of the upper fixing plate (18), and the box body (14) is fixedly connected to the upper fixing plate (18) by bolts.

4. A tower crane hoisting mechanism transmission device according to claim 2, characterized in that: Positioning holes are provided at two ends of the upper surface of the lower fixing plate (15) at positions corresponding to the positioning rod (17), and the sizes of the positioning rod (17) and the positioning holes are matched, and the lower fixing plate (15) is fixedly connected to the bottom of the box body (14), and at the same time, a plurality of groups of through holes are provided at two ends of the lower surface of the lower fixing plate (15) in parallel and at equal intervals, and the through holes are in a semi-cylindrical structure.

5. The tower crane hoisting mechanism transmission device according to claim 1, characterized in that: The rotating plate (8) has a circular structure, and a plurality of movable grooves are provided on the arc surface of the rotating plate (8) at equal intervals along the circumferential direction, and the movable grooves are overall rectangular in structure, while the bottom of the movable grooves is an arc-shaped structure, and the roller shaft (16) movably connected in the movable grooves is a cylindrical structure.

6. A tower crane hoisting mechanism transmission device according to claim 1, characterized in that: The partition plate (6) fixedly connected in the box body (14) has an L-shaped cross-section, and the bent portion of the partition plate (6) has a convex structure, and the protruding portion of the bent portion of the partition plate (6) fits the surface of the rotating plate (8). At the same time, a lubrication cavity is divided into a lubrication cavity filled with lubricating oil on a side of the box body (14) close to the brake motor (3).

7. The tower crane hoisting mechanism transmission device according to claim 1, characterized in that: The support plate (7) has a rectangular structure, the transmission shaft (9) movably connected to the upper end of the support plate (7) has a cylindrical structure, and the support plate (7) and the transmission shaft (9) are combined together to form a T-shaped structure, and the size of the main transmission wheel (10) is smaller than the size of the auxiliary transmission wheel (12).

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