Combined speed reduction driving winch
By using a combined reduction drive winch and a planetary gear system for secondary reduction, the problem of installing a large reduction ratio reducer in a confined space on a large tonnage crane is solved, achieving the effect of a small size and a large reduction ratio, and reducing equipment costs.
Patent Information
- Application Number
- CN202421821913.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-30
- Publication Date
- 2025-01-10
- Estimated Expiration
- 2034-07-30
AI Technical Summary
The hoisting mechanism of large-tonnage cranes is difficult to install with a large reduction ratio reducer in a confined space. Existing equipment is bulky and expensive, and cannot meet the requirements of energy saving and economy in the design.
The winch, which adopts a combined reduction drive, consists of an industrial gearbox, a brake motor, and a fourth-stage reduction device to form a planetary gear system. It uses the transmission wheel, planetary gears, and internal gear ring for secondary reduction, and combines the drum assembly to achieve a small size and large reduction ratio.
Achieving a larger reduction ratio without increasing equipment size reduces equipment investment costs, meets installation requirements in confined spaces, and improves equipment layout flexibility.
Smart Images
Figure CN222331413U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of winches, and in particular relates to a combined speed reduction driven winch. Background Art
[0002] The hoisting mechanism of the crane is driven by the hoisting motor through the coupling and the reducer to rotate the drum, so that the wire rope wound on the drum drives the hook device to rise or fall. The hoisting mechanism of the large-tonnage crane adopts an open winch.
[0003] The lifting capacity and lifting speed determine the electric power of the lifting motor. Large-tonnage cranes often require low-speed and high-torque. The commonly used 3-level standard industrial gearbox has an insufficient reduction ratio. The 4-level standard industrial gearbox has a much heavier weight and a larger size, which does not meet the requirements of energy-saving and economical crane design. It cannot be installed when the factory space is limited. Summary of the invention
[0004] The utility model provides a combined speed reduction driven winch, aiming to solve the problems that the current large speed reduction ratio reducer has large equipment volume, high cost and cannot meet the assembly requirements of the winch in a narrow space environment.
[0005] The utility model is implemented as follows: a combined speed reduction driven winch, comprising:
[0006] An industrial gearbox and a brake motor, wherein a transmission wheel is provided on the power output shaft of the industrial gearbox;
[0007] A fourth stage reduction gear, the fourth stage reduction gear comprises a planet carrier, planetary gears and an inner gear ring mounted on the planet carrier, the transmission wheel extends into the planet carrier and meshes with the planetary gear, and the planetary gear is meshed with the inner gear ring;
[0008] A reel assembly, one end of which is wrapped around the outside of the fourth-stage reduction device, and the inner gear ring is fixed to one end of the reel assembly;
[0009] The power generated by the brake motor is transmitted to the fourth-stage reduction device via the power output shaft and finally transmitted to the inner gear ring, and the inner gear ring drives the reel assembly to rotate around the power output shaft.
[0010] Preferably, the planet carrier comprises a primary planet carrier and a secondary planet carrier, and a connecting plate is provided between the primary planet carrier and the secondary planet carrier for fixed connection.
[0011] Preferably, the primary planet carrier is fixed to a body of the industrial gearbox.
[0012] Preferably, a plurality of groups of fixed shafts are provided between the primary planet carrier and the secondary planet carrier, and the planetary gears are mounted on the fixed shafts.
[0013] Preferably, a mounting groove is provided at one end of the reel assembly, and the mounting groove is nested outside the fourth stage reduction device.
[0014] Preferably, a first bearing is further provided at one end of the power output shaft, a bearing seat is provided at the center of the mounting groove, and the first bearing is assembled in the bearing seat.
[0015] Preferably, the outer wall of the inner gear ring is fixedly connected to the inner wall of the mounting groove.
[0016] Preferably, shaft holes for accommodating the power output shaft to pass through are provided at the centers of the primary planet carrier and the secondary planet carrier.
[0017] Preferably, the first bearing is arranged on the portion of the power output shaft passing through the secondary planetary carrier.
[0018] Preferably, the planetary gear is mounted on the fixed shaft via a bearing.
[0019] Compared with the prior art, the embodiments of the present application have the following beneficial effects:
[0020] The combined reduction-driven winch provided by the utility model inserts a transmission wheel into the fourth-stage reduction device, and performs secondary reduction in the planetary gear system composed of the transmission wheel, the planetary wheel and the inner ring gear. Through the structural integration of the drum assembly and the fourth-stage reduction device, the need for the reduction ratio of the industrial gear box is reduced without increasing the equipment volume, thereby reducing the equipment investment cost.
[0021] This structure uses a smaller-sized reducer and a fourth-stage reduction device in combination to still achieve a larger reduction ratio, without the need for a large-sized reducer. The requirements of small size and large reduction ratio can be achieved through structural optimization, improving the layout requirements of equipment in a small area. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 The utility model is a schematic diagram of the structure of a combined speed reduction driven winch.
[0023] Figure 2 It is a structural schematic diagram of the fourth stage reduction device provided by the utility model.
[0024] Figure 3 It is a schematic diagram of the internal structure of the fourth stage reduction device provided by the utility model.
[0025] Figure 4 It is a schematic diagram of the internal structure of the fourth stage speed reduction device and the reel assembly provided by the utility model.
[0026] Figure 5 It is a schematic diagram of the structure of the reel assembly provided by the utility model.
[0027] Figure 6 It is a structural schematic diagram of a primary planet carrier and a secondary planet carrier provided by the utility model.
[0028] Description of reference numerals:
[0029] 100, industrial gearbox; 110, power output shaft; 120, transmission wheel; 200, brake motor; 300, fourth-stage reduction device; 310, first-stage planetary carrier; 320, second-stage planetary carrier; 330, first bearing; 340, inner ring gear; 350, planetary gear; 360, connecting plate; 400, reel assembly; 410, first connecting end; 420, second connecting end; 421, mounting groove; 422, bearing seat. DETAILED DESCRIPTION
[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by technicians in the technical field of this application; the terms used in the specification of the application herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, not to describe a specific order.
[0031] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.
[0032] The utility model provides a combined speed reduction driven winch, such as Figure 1-Figure 6 As shown, the combined speed reduction driven winch comprises:
[0033] An industrial gearbox 100 and a brake motor 200, wherein the motor shaft of the brake motor 200 is connected to the power input shaft of the industrial gearbox 100, and a transmission wheel 120 is provided on the power output shaft 110 of the industrial gearbox 100, and the transmission wheel 120 is equivalent to a sun wheel; the brake motor 200 using the prior art can provide power and braking functions for the industrial gearbox 100;
[0034] The fourth stage reduction gear 300 includes a planet carrier, a planetary gear 350 mounted on the planet carrier, and an inner gear ring 340. The planet carrier includes a primary planet carrier 310 and a secondary planet carrier 320. The planetary gear 350 is arranged between the primary planet carrier 310 and the secondary planet carrier 320. The transmission wheel 120 extends into the planet carrier and meshes with the planetary gear 350. The planetary gear 350 meshes with the inner gear ring 340.
[0035] The reel assembly 400 has two ends, namely a first connection end 410 and a second connection end 420 . The first connection end 410 is fixed to the equipment platform through a bearing, and the second connection end 420 is wrapped around the outside of the fourth stage reduction device 300 .
[0036] The power generated by the brake motor 200 is transmitted to the power output shaft 110 through the industrial gearbox 100, and then transmitted to the reel assembly 400 via the planetary gear 350. The industrial gearbox 100 is a three-stage transmission reducer device in the prior art, which is mainly responsible for the initial reduction of the rotation speed of the brake motor 200, and the transmission wheel 120, the planetary gear 350 and the inner ring 340 constitute a planetary gear train, which realizes secondary deceleration with the help of the function of the planetary gear train.
[0037] In this embodiment, the structures of the brake motor 200 and the industrial gearbox 100 are both based on existing technology equipment, and only a transmission wheel 120 is added to the power output shaft 110 of the industrial gearbox 100 to serve as the sun gear structure of the fourth-stage reduction device 300. The transmission wheel 120, the planetary wheel 350 and the inner ring 340 constitute a planetary gear system for secondary reduction. The inner ring 340 and the reel assembly 400 are integrated to cooperate with the advantages of the planetary gear system, thereby reducing the need for the reduction ratio of the industrial gearbox 100. This set of structures uses a smaller-sized reducer and the fourth-stage reduction device 300 to combine to still obtain a larger reduction ratio, and no large-sized reducer is needed. The requirements of small size and large reduction ratio are achieved through structural optimization, and the layout requirements of the equipment in a small area are improved.
[0038] As a preferred implementation in this embodiment, the planet carrier includes a primary planet carrier 310 and a secondary planet carrier 320. A connecting plate 360 is provided between the primary planet carrier 310 and the secondary planet carrier 320 for fixed connection.
[0039] The planetary gear 350 is assembled between the primary planetary carrier 310 and the secondary planetary carrier 320. The primary planetary carrier 310 is fixed on the body of the industrial gearbox 100. The planetary carrier does not rotate during the transmission process. The planetary gear 350 adopts existing technical equipment. When the transmission wheel 120 extending into the interior of the planetary carrier drives the planetary gear 350 to rotate around the fixed axis, the inner ring gear 340 will make a circular motion around the power output shaft 110 under the transmission action of the planetary gear 350.
[0040] like Figure 6 As shown, the structures of the primary planet carrier 310 and the secondary planet carrier 320 are similar to two annular plates, and the connecting plate 360 completes the fixed connection between the primary planet carrier 310 and the secondary planet carrier 320. The primary planet carrier 310 and the secondary planet carrier 320 are also provided with a plurality of groups of one-to-one corresponding through holes for arranging a plurality of groups of fixed shafts. The planetary gear 350 is mounted on the fixed shaft, and the planetary carrier itself does not move, while the planetary gear 350 mounted on the fixed shaft through the bearing structure will rotate around the fixed shaft. When the transmission wheel 120 located at the center of the planetary carrier drives the planetary gear 350 to rotate, it will drive the inner gear ring 340 to rotate synchronously. The purpose of gear transmission and deceleration is achieved.
[0041] As a preferred implementation in this embodiment, the second connection end 420 of the reel assembly 400 is provided with a mounting groove 421 and a bearing seat 422;
[0042] A first bearing 330 is also provided at one end of the power output shaft 110. The first bearing 330 is assembled in the bearing seat 422. Here, the power output shaft 110 provides support force for the reel assembly 400 through the first bearing 330 to ensure that the reel assembly 400 is more uniform.
[0043] The outer wall of the inner gear ring 340 is assembled in the mounting groove 421 . When the inner gear ring 340 is rotated by the planetary gear 350 , it will pull the reel assembly 400 to rotate synchronously as a whole.
[0044] Here’s how this application works:
[0045] The power generated by the brake motor 200 is output to the industrial gearbox 100, and the multi-stage gear structure in the industrial gearbox 100 performs transmission reduction, and finally outputs the torque outward through the power output shaft 110. The end of the power output shaft 110 is inserted into the interior of the fourth-stage reduction device 300, and a planetary gear train is formed with the help of the planetary carrier, planetary gear 350 and inner ring gear 340 provided in the fourth-stage reduction device 300. The power output shaft 110 acts as the sun gear of the planetary gear train and is responsible for power input, while the inner ring gear 340 is connected to the reel assembly 400, and the inner ring gear 340 is responsible for power output. Under the action of the planetary gear train principle, the torque on the power output shaft 110 is finally transmitted to the reel assembly 400 through the inner ring gear 340. By adding a fourth-stage reduction device 300 at one end of the reel assembly 400, the structure is optimized to meet the requirements of small size and large reduction ratio, thereby improving the layout requirements of the equipment in a narrow area.
[0046] It should be noted that, for the above-mentioned embodiments, for the sake of simplicity, they are all described as a series of action combinations, but those skilled in the art should know that the utility model is not limited by the described action sequence, because according to the utility model, some steps may be performed in other sequences or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the utility model.
[0047] The above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit the protection scope of the utility model. Obviously, the described embodiments are only some embodiments of the utility model, rather than all embodiments. Based on these embodiments, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model. Although the utility model has been described in detail with reference to the above embodiments, ordinary technicians in this field can still combine, add, delete or make other adjustments to the features in the various embodiments of the utility model according to the circumstances without conflict, without making creative work, so as to obtain different other technical solutions that do not deviate from the concept of the utility model in essence, and these technical solutions also belong to the scope of protection of the utility model.
Claims
1. A combined speed reduction driven winch, characterized in that: include: An industrial gear box (100) and a brake motor (200), wherein a transmission wheel (120) is provided on a power output shaft (110) of the industrial gear box (100); A fourth stage reduction gear (300), the fourth stage reduction gear (300) comprising a planet carrier, a planetary gear (350) mounted on the planet carrier, and an inner gear ring (340), the transmission wheel (120) extending into the planet carrier and meshingly connected with the planetary gear (350), and the planetary gear (350) and the inner gear ring (340); A reel assembly (400), one end of the reel assembly (400) is wrapped around the outside of the fourth-stage reduction device (300), and the inner gear ring (340) is fixed to the inner wall of one end of the reel assembly (400); The power generated by the brake motor (200) is transmitted to the fourth-stage reduction device (300) via the power output shaft (110) and finally transmitted to the inner gear ring (340), and the inner gear ring (340) drives the reel assembly (400) to rotate around the power output shaft (110).
2. A combined speed reduction driven winch as claimed in claim 1, characterized in that: The planet carrier comprises a primary planet carrier (310) and a secondary planet carrier (320), and a connecting plate (360) is provided between the primary planet carrier (310) and the secondary planet carrier (320) for fixed connection.
3. A combined speed reduction driven winch as claimed in claim 2, characterized in that: The primary planet carrier (310) is fixed on the body of the industrial gear box (100).
4. A combined speed reduction driven winch as claimed in claim 3, characterized in that: A plurality of groups of fixed shafts are also provided between the primary planet carrier (310) and the secondary planet carrier (320).
5. A combined speed reduction driven winch as claimed in claim 4, characterized in that: One end of the reel assembly (400) is provided with a mounting groove (421), and the mounting groove (421) is nested on the outside of the fourth stage reduction device (300).
6. A combined speed reduction driven winch as claimed in claim 5, characterized in that: A first bearing (330) is also provided at one end of the power output shaft (110), a bearing seat (422) is provided at the center of the mounting groove (421), and the first bearing (330) is assembled in the bearing seat (422).
7. A combined speed reduction driven winch as claimed in claim 5, characterized in that: The outer wall of the inner gear ring (340) is fixedly connected to the inner wall of the mounting groove (421).
8. A combined speed reduction driven winch as claimed in claim 6, characterized in that: A shaft hole for accommodating the power output shaft (110) to pass through is provided at the center of the primary planet carrier (310) and the secondary planet carrier (320).
9. A combined speed reduction driven winch as claimed in claim 8, characterized in that: The first bearing (330) is arranged on the portion of the power output shaft (110) that passes through the secondary planet carrier (320).
10. A combined speed reduction driven winch as claimed in claim 4, characterized in that: The planetary gear (350) is assembled on the fixed shaft via a bearing.