CN223923756U

CN223923756U - Tower crane brake speed reducer

Info

Publication number: CN223923756U
Application number: CN202520390172.8U
Authority: CN
Inventors: 魏龙霞; 谭浩文; 姜有贤
Original assignee: Xinjiang Pangyuan Machinery Engineering Co ltd
Current assignee: Xinjiang Pangyuan Machinery Engineering Co ltd
Priority date: 2025-03-07
Filing date: 2025-03-07
Publication date: 2026-02-17
Anticipated expiration: 2035-03-07

Abstract

The utility model belongs to the technical field of engineering machinery, and discloses a brake reducer of a tower crane. The tower crane brake reducer comprises a front cover plate and a rear cover plate, wherein the front cover plate and the rear cover plate are fixedly installed through bolts, a base is fixedly installed below the front cover plate and the rear cover plate, a driving motor is fixedly installed at the center of the rear cover plate, one end of a transmission rod is fixedly installed at the output end of the driving motor, and the other end of the transmission rod extends inwards into the rear cover plate. This tower crane brake reduction gear, through the design of supplementary reduction subassembly, improved the speed reduction effect of reduction gear to reduce the impact that the reduction gear operation in-process received, prolonged the life of the interior component of reduction gear to a certain extent, still be convenient for dismantle fast in the maintenance in-process, thereby improved certain maintenance efficiency.

Description

Tower crane brake speed reducer

Technical Field

The utility model relates to the technical field of engineering machinery, in particular to a brake reducer of a tower crane.

Background

The speed reducer is an independent component consisting of gear transmission, worm transmission and gear-worm transmission enclosed in a rigid shell, is commonly used as a speed reduction transmission device between a prime mover and a working machine, plays a role in matching rotation speed and transmitting torque between the prime mover and the working machine or an actuating mechanism, and is widely applied to modern machinery.

The existing speed reducer has some problems in operation, when the speed reducer is in operation, large impact force can be generated, the impact force can influence the service life of internal elements, and certain auxiliary braking elements are lacked to perform matched speed reduction, so that a tower crane braking speed reducer is urgently needed in the market to solve the problems.

Disclosure of utility model

The utility model aims to provide a tower crane brake reducer which solves the problems in the background art.

The brake reducer of the tower crane comprises a front cover plate and a rear cover plate, wherein the front cover plate and the rear cover plate are fixedly arranged through bolts, a base is fixedly arranged below the front cover plate and the rear cover plate, a driving motor is fixedly arranged at the center of the rear cover plate, one end of a transmission rod is fixedly arranged at the output end of the driving motor, the other end of the transmission rod extends inwards into the rear cover plate, an installation disc is rotatably connected to the inner wall of the rear cover plate through a bearing, and the installation disc is fixedly arranged with the transmission rod;

The novel planetary gear transmission device is characterized in that three mounting rods are fixedly mounted on the mounting plate, planetary gears are connected to the three mounting rods through bearings in a rotating mode, an annular gear is fixedly mounted on the inner wall of the rear cover plate, the three planetary gears are meshed with the annular gear, a sun gear is fixedly mounted on the transmission rod and located between the three planetary gears, the sun gear is meshed with the three planetary gears through gear teeth, a planet carrier is further arranged in the rear cover plate, three ports of the planet carrier are respectively spliced with the corresponding mounting rods, and an auxiliary speed reduction assembly is arranged in the rear cover plate.

Preferably, the auxiliary speed reducing assembly comprises a circular ring, the circular ring is arranged in the rear cover plate, an inserting rod is fixedly connected to the outer side of the circular ring, an inserting connector is fixedly arranged on the outer side of the annular gear at a position corresponding to the inserting rod, the inserting rod is inserted with the inserting connector, an annular groove is formed in the circular ring, a first hydraulic cylinder is fixedly connected to the inner wall of the annular groove, and a first friction plate is fixedly arranged at the output end of the first hydraulic cylinder.

Preferably, the auxiliary speed reduction assembly further comprises a controller, the controller is fixedly arranged in a mounting groove on the circular ring, the outer sides of the three ports of the planet carrier are fixedly connected with a second hydraulic cylinder, the output end of the second hydraulic cylinder is fixedly connected with a second friction plate, and the friction plate is located in the annular groove and is in contact with the corresponding first friction plate.

Preferably, a connector is rotatably connected in the front cover plate through a bearing, and the connector is fixedly installed on the corresponding end face of the transmission rod.

Preferably, the planet carrier is triangular.

Preferably, the second friction plate is made of wear-resistant ceramic composite materials.

By adopting the technical scheme, the utility model has the beneficial effects that:

This tower crane brake reduction gear, through the design of supplementary reduction subassembly, improved the speed reduction effect of reduction gear to reduce the impact that the reduction gear operation in-process received, prolonged the life of the interior component of reduction gear to a certain extent, still be convenient for dismantle fast in the maintenance in-process, thereby improved certain maintenance efficiency.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a schematic elevational view of the present utility model;

FIG. 3 is a schematic view of the cross-sectional structure of A-A of FIG. 2in accordance with the present utility model;

FIG. 4 is an enlarged schematic view of the structure of FIG. 3A according to the present utility model;

FIG. 5 is a schematic view of the bottom view of the present invention;

FIG. 6 is a schematic view of the cross-sectional structure of the device of FIG. 5.

In the figure, 1, a front cover plate, 2, a rear cover plate, 3, a base, 4, a driving motor, 5, a transmission rod and 6, and a mounting disc;

61. mounting rods, 62, planetary gears, 63, an inner gear ring, 64, a sun gear, 65 and a planetary carrier;

7. The auxiliary speed reducing assembly comprises a 71, a circular ring, a 72, a plug rod, a 73, a plug connector, a 74, an annular groove, a 75, a first hydraulic cylinder, a 76, a first friction plate, a 77, a controller, a 78, a second hydraulic cylinder, a 79 and a second friction plate;

8. a connector.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-6, the utility model provides a technical scheme that the brake reducer of the tower crane comprises a front cover plate 1 and a rear cover plate 2, wherein the front cover plate 1 and the rear cover plate 2 are fixedly installed through bolts, a base 3 is fixedly installed below the front cover plate 1 and the rear cover plate 2, a driving motor 4 is fixedly installed at the center position of the rear cover plate 2, one end of a transmission rod 5 is fixedly installed at the output end of the driving motor 4, the other end of the transmission rod 5 extends inwards into the rear cover plate 2, an installation disc 6 is rotatably connected with the inner wall of the rear cover plate 2 through a bearing, and the installation disc 6 is fixedly installed with the transmission rod 5;

The driving motor 4 and the transmission rod 5 act on to provide power for the speed reducer, the rear cover plate 2 and the front cover plate 1 are connected through bolts, so that the rear cover plate is convenient to overhaul, the mounting plate 6 can rotate in the rear cover plate 2, bearings are arranged at corresponding positions in the rear cover plate 2, and the driving force of the mounting plate 6 is driven by the transmission rod 5.

The three mounting rods 61 are fixedly mounted on the mounting plate 6, the three mounting rods 61 are respectively connected with the planetary gears 62 through bearings in a rotating manner, the inner wall of the rear cover plate 2 is fixedly provided with the annular gear 63, the three planetary gears 62 are meshed with the annular gear 63, the transmission rod 5 is fixedly provided with the sun gear 64, the sun gear 64 is positioned between the three planetary gears 62, the sun gear 64 is meshed with the three planetary gears 62 through gear teeth, the rear cover plate 2 is internally provided with the planet carrier 65, three ports of the planet carrier 65 are respectively spliced with the corresponding mounting rods 61, the rear cover plate 2 is internally provided with the auxiliary speed reducing assembly 7, the auxiliary speed reducing assembly 7 comprises a circular ring 71, the circular ring 71 is arranged in the rear cover plate 2, the outer side of the circular ring 71 is fixedly connected with the inserted rod 72, the outer side of the annular gear 63 is fixedly provided with the inserted connector 73 corresponding to the position of the inserted rod 72, the circular ring 71 is provided with the annular groove 74, the opposite inner wall of the annular groove 74 is fixedly connected with the first hydraulic cylinder 75, the output ends of the first hydraulic cylinder 75 are fixedly provided with the friction plates 76, the auxiliary speed reducing assembly 7 further comprises a controller 77, the second friction plates 77 are fixedly connected with the second friction plates 79 and are fixedly connected with the second friction plates 79, which are fixedly connected with the first friction plates and the second friction plates 78, and the second friction plates are fixedly connected with the second friction plates 79.

The driving force source of the sun gear 64 is the transmission rod 5, when the transmission rod 5 drives the sun gear 64 to drive, the sun gear 64 drives the planet gears 62 to rotate, the planet gears 62 rotate along the inner path of the annular gear 63, thereby realizing the speed reduction effect, the rotating planet gears 62 drive the planet carrier 65 to rotate in a following manner, the circular ring 71 is limited by inserting the inserting rods 72 with the inserting connectors 73 on the annular gear 63, the number of the inserting connectors 73 and the inserting rods 72 is four, the first hydraulic cylinder 75 acts on the friction plate 76 to move relatively and contact the second friction plate 79, the first hydraulic cylinder 75 and the second hydraulic cylinder 78 are controlled by the controller 77, the output end of the second hydraulic cylinder 78 drives the second friction plate 79 to move into the annular groove 74, the first hydraulic cylinder 75 acts on the contact force between the first friction plate 76 and the second friction plate 79, the force is small, the auxiliary speed reduction effect is large, and the controller 77 is a common control element.

The front cover plate 1 is internally connected with a connector 8 through bearing transmission, and the connector 8 is fixedly arranged on the corresponding end face of the transmission rod 5.

The connector 8 is operative to connect with an external component.

The carrier 65 has a triangular shape.

The second friction plate 79 is made of wear-resistant ceramic composite materials.

The working principle is that when the tower crane brake reducer works, the output end of the driving motor 4 transmits power to the transmission rod 5, so that the transmission rod 5 rotates, when the transmission rod 5 rotates, the installation plate 6 rotates along with the rotation, the sun gear 64 on the transmission rod 5 also rotates while the installation plate 6 rotates, the sun gear 64 drives the planet gears 62 to rotate, the external meshing teeth of the planet gears 62 are meshed and transmitted on the internal meshing teeth of the internal gear ring 63, the speed reducing effect is achieved, when the planet gears 62 rotate, the planet carrier 65 is driven to rotate along with the rotation, the output end of the hydraulic cylinder II 78 on the planet carrier 65 can push the friction plate II 79 outwards through the control of the controller 77, the friction plate II 79 moves into the annular groove 74, and the output end of the hydraulic cylinder I75 controls the friction plate II 76 to contact with the upper surface and the lower surface of the friction plate II 79, so that secondary speed reduction is completed.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The brake reducer of the tower crane comprises a front cover plate (1) and a rear cover plate (2) and is characterized in that the front cover plate (1) and the rear cover plate (2) are fixedly installed through bolts, a base (3) is fixedly installed below the front cover plate (1) and the rear cover plate (2), a driving motor (4) is fixedly installed at the center of the rear cover plate (2), one end of a transmission rod (5) is fixedly installed at the output end of the driving motor (4), the other end of the transmission rod (5) extends inwards into the rear cover plate (2), an installation disc (6) is rotatably connected with the inner wall of the rear cover plate (2) through a bearing, and the installation disc (6) is fixedly installed with the transmission rod (5);

three installation poles (61) are fixedly installed on the installation plate (6), and all be connected with planet wheel (62) through the bearing rotation on three installation poles (61), back shroud (2) inner wall fixed mounting has ring gear (63), three planet wheel (62) all mesh with ring gear (63), still fixed mounting has sun gear (64) on transfer line (5), sun gear (64) are located between three planet wheel (62), sun gear (64) are through teeth of a cogwheel and three planet wheel (62) meshing, still be provided with planet carrier (65) in back shroud (2), and three port of planet carrier (65) peg graft with corresponding installation pole (61) respectively, be provided with auxiliary speed reduction assembly (7) in back shroud (2).

2. The brake reducer of the tower crane according to claim 1, wherein the auxiliary speed reducing assembly (7) comprises a circular ring (71), the circular ring (71) is arranged in the rear cover plate (2), a plug-in rod (72) is fixedly connected to the outer side of the circular ring (71), a plug-in connector (73) is fixedly arranged on the outer side of the annular gear (63) and corresponds to the plug-in rod (72), the plug-in rod (72) is plugged in with the plug-in connector (73), an annular groove (74) is formed in the circular ring (71), first hydraulic cylinders (75) are fixedly connected to the opposite inner walls of the annular groove (74), and first friction plates (76) are fixedly arranged at the output ends of the first hydraulic cylinders (75).

3. The brake reducer of a tower crane according to claim 2, wherein the auxiliary speed reducing assembly (7) further comprises a controller (77), the controller (77) is fixedly installed in an installation groove on the circular ring (71), the outer sides of three ports of the planet carrier (65) are fixedly connected with a second hydraulic cylinder (78), the output end of the second hydraulic cylinder (78) is fixedly connected with a second friction plate (79), and the second friction plate (79) is located in the annular groove (74) and is in contact with the corresponding first friction plate (76).

4. The brake reducer of the tower crane, as set forth in claim 3, is characterized in that a connector (8) is rotatably connected in the front cover plate (1) through a bearing, and the connector (8) is fixedly installed on the corresponding end face of the transmission rod (5).

5. A brake reducer for a tower crane according to claim 4, wherein said planet carrier (65) is triangular.

6. The brake reducer of a tower crane according to claim 5, wherein the second friction plate (79) is made of wear-resistant ceramic composite materials.