Lubricating and cooling system for center driving speed reducer of multi-input screw conveyor
By designing the lubrication cooling system of the multi-input screw machine center drive reducer, the lubrication of the multi-input reducer at high speed and high power operation using components such as oil separator, oil inlet pipe assembly, partition ring II and partition ring I, the lubrication of the multi-input reducer during high-speed and high-power operation is solved. Cooling problem achieves stable operation and efficient lubricating cooling.
Patent Information
- Application Number
- CN202423120602.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-18
- Publication Date
- 2025-02-11
- Estimated Expiration
- 2034-12-18
AI Technical Summary
When the multi-input screw machine center drive reducer is running at high speed and high power, it is difficult to achieve thermal balance, resulting in the design of lubrication cooling system becoming the key, but the existing technology is difficult to effectively solve the lubrication cooling problem of the multi-input reducer.
A multi-input screw machine center-driven reducer lubrication cooling system is designed, including oil separator, oil inlet pipe assembly, partition ring II and partition ring I. Through forced lubrication and cooling, the oil passage is ensured to be unobstructed and suitable for high speeds. High-speed end lubrication and cooling under operating conditions.
It realizes long-term high-speed, high-power stable operation of the multi-input reducer, ensures lubrication and cooling effects, simplifies structural design, and is easy to process and assembly.
Smart Images
Figure CN222458332U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of reducers, in particular to a lubrication and cooling system for a central drive reducer of a multi-input screw machine. Background Art
[0002] The screw conveyor is an important component of the shield machine. It is usually installed at the tail of the shield machine. Through the rotation of the spiral blades and cooperation with the casing, the crushed stone, slag and mud excavated by the cutter head at the front end of the shield machine are pushed out from the soil bin to achieve the slag discharge function.
[0003] The center drive reducer of the screw conveyor is usually installed at the tail of the screw conveyor, transmitting the power of the hydraulic motor to the spiral blade and driving it to rotate and discharge slag. The reducer of the screw conveyor often needs to run continuously at high speed to ensure that the slag can be discharged in time. The rated power of the center drive reducer of the multi-input screw conveyor is very high, and a large amount of heat will be generated during operation. The reducer itself cannot achieve thermal balance, so a lubrication cooling system is required to maintain the temperature of the reducer and provide continuous and reliable lubrication for the reducer.
[0004] Unlike single-input spiral reducers, multi-input reducers need to supply oil to multiple input bearings, oil seals, gears and other components at the same time. Some of them are always above the oil level and completely rely on the forced supply of the lubrication and cooling system. Therefore, the design of the reducer lubrication and cooling system is very important. Utility Model Content
[0005] In view of the above problems, the purpose of the utility model is to provide a lubrication and cooling system for a multi-input screw machine center drive reducer, which can effectively solve the lubrication and cooling problems of the multi-input screw machine center drive reducer, so that the multi-input reducer can operate stably at high speed and high power for a long time.
[0006] The technical solution adopted by the utility model is as follows:
[0007] The utility model proposes a lubrication and cooling system for a multi-input screw machine center-driven reducer, comprising an oil separator, an oil inlet pipe assembly, a spacer ring II and a spacer ring I; the oil separator is threadedly connected to one side of the outside of the front body of the reducer, and its input end is an oil inlet, and has multiple output ends; the output ends of the oil separator are respectively connected to the oil inlet pipe assemblies; the oil inlet pipe assemblies are respectively connected to the two conical bearings inside each input end of the reducer; the spacer ring II is correspondingly installed between the two conical bearings inside the input end of the reducer, and its circumferential surface is provided with an annular oil groove and an oil injection hole connected with the corresponding oil inlet pipe assembly; the spacer ring I is correspondingly installed between the conical bearing inside the input end of the reducer and the transparent cover, and its circumferential surface is provided with an annular oil groove and an oil through hole; an oil outlet is provided at one end of the middle part of the reducer.
[0008] Furthermore, at the mounting inner hole of the tapered bearing at the input end of the reducer, two oil grooves and two oil holes are symmetrically provided at both ends of the lower 1 / 3 part in the circumferential direction, and the two oil holes are connected to the interior of the front body; two oil grooves are also provided on the mounting inner hole of the mounting flange at the input end of the reducer, and are in the same phase as the two oil grooves at the mounting inner hole of the tapered bearing, correspond to each other and are connected, and are also connected to the oil holes on the spacer ring I.
[0009] Furthermore, an oil injection device is provided on one side of the interior of the front body of the reducer; the inner end of the oil injection device is close to the bearings and gears inside the front body of the reducer, and a plurality of oil injection ports are evenly distributed circumferentially; an output end of the oil separator is connected to the outer end of the oil injection device through an oil inlet pipe assembly.
[0010] Furthermore, the oil inlet pipe assembly is threadedly connected to the corresponding outer shell of the reducer input end.
[0011] Furthermore, the oil injection device is threadedly connected to the front body of the reducer; and the outer end of the oil injection device is threadedly connected to the corresponding oil inlet pipe assembly.
[0012] Furthermore, the reducer is provided with a plurality of oil holes connected to the oil outlet to ensure smooth flow of the lubricating oil.
[0013] Compared with the prior art, the utility model has the following beneficial effects:
[0014] 1. The utility model is suitable for lubrication and cooling of multi-input reducers.
[0015] 2. The utility model adopts the method of forced lubrication and cooling, the oil circuit is unobstructed and targeted, and the lubrication and cooling effects are effectively guaranteed.
[0016] 3. The oil injection, oil tank, oil hole and other structures of the utility model are simple, easy to process and assemble, and do not require complicated piping.
[0017] 4. The utility model fully considers the pressure and oil storage capacity of the oil chamber, and is particularly suitable for high-speed end lubrication and cooling under high-speed working conditions. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 It is a schematic diagram of the external connection structure of the utility model and the reducer.
[0019] Figure 2 for Figure 1 Schematic diagram of the local enlarged structure in;
[0020] Figure 3 This is a schematic diagram of the internal connection structure of the utility model and the reducer;
[0021] Figure 4 for Figure 3 Schematic diagram of the local enlarged structure in;
[0022] Figure 5 It is a schematic diagram of the structure of the spacer ring II;
[0023] Figure 6 It is a schematic diagram of the structure of the spacer ring I;
[0024] Figure 7 It is a structural schematic diagram of the oil separator;
[0025] Figure 8 for Figure 7 A schematic cross-sectional structure diagram of ;
[0026] Fig. 9 This is a schematic diagram of the structure of the internal bevel gear at the input end of the reducer;
[0027] Fig.10 It is a structural diagram of the mounting flange;
[0028] Fig.11 This is a schematic diagram of the reducer's oil inlet and outlet and internal oil hole distribution structure.
[0029] Among them, the figure markings are: 1-oil inlet; 2-oil distributor; 3-oil inlet pipe assembly I; 4-oil inlet pipe assembly II; 5-oil inlet pipe assembly III; 6-oil inlet pipe assembly IV; 7-oil injection device; 8-front body; 9-spacer ring II; 91-annular oil groove II; 92-oil injection hole; 10-spacer ring I; 101-annular oil groove I; 102-oil through hole; 11-mounting flange; 12-transparent cover; 13-oil outlet; 14-gear shaft. DETAILED DESCRIPTION
[0030] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0031] It should be noted that, in the description of the present invention, the terms "upper", "lower", "top", "bottom", "one side", "the other side", "left", "right", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not mean that the device or element must have a specific orientation, be constructed and operated in a specific orientation.
[0032] See attached Figure 1-8The utility model proposes a lubrication and cooling system for a multi-input screw machine center drive reducer, taking a three-input reducer as an example, comprising an oil distributor (2), an oil inlet pipe assembly I (3), an oil inlet pipe assembly II (4), an oil inlet pipe assembly III (5), an oil inlet pipe assembly IV (6), a spacer ring II (9) and a spacer ring I (10).
[0033] In this embodiment, the oil distributor (2) is threadedly connected to one side of the bottom of the front body (8) of the reducer, and has an input end as an oil inlet (1) and four output ends, so that one oil circuit can be divided into four oil circuits; the four output ends of the oil distributor (2) are respectively connected to the oil inlet pipe assembly I (3), the oil inlet pipe assembly II (4), the oil inlet pipe assembly III (5) and the oil inlet pipe assembly IV (6); wherein the output ends of the oil inlet pipe assembly I (3), the oil inlet pipe assembly II (4) and the oil inlet pipe assembly III (5) are respectively threadedly connected to the outer shells of the three input ends of the reducer, and the inner ends are respectively connected to the two tapered bearings inside the corresponding input ends of the reducer. The three input ends of the reducer are evenly distributed in the circumferential direction, and the lubrication and cooling forms are the same.
[0034] The spacer ring II (9) is correspondingly installed between the two tapered bearings inside each input end of the reducer, and its circumferential surface is provided with an annular oil groove II (91) and an oil injection hole (92) connected to the corresponding oil inlet pipe assembly; the spacer ring I (10) is correspondingly installed between the tapered bearing and the transparent cover (12) inside each input end of the reducer, and its circumferential surface is provided with an annular oil groove I (101) and an oil through hole (102); an end of the middle part of the reducer is provided with an oil outlet (13), and a plurality of oil holes connected to the oil outlet (13) are provided inside, such as Fig.11 to ensure smooth flow of lubricating oil.
[0035] At the mounting inner hole of the tapered bearing at each input end of the reducer, two oil grooves and two oil holes are symmetrically provided at both ends of the lower 1 / 3 part along the circumferential direction, such as Fig. 9 As shown, two oil holes are connected to the interior of the reducer through the front body (8); two oil grooves are also provided on the mounting inner holes of the mounting flanges (11) at each input end of the reducer, and the two oil grooves are in the same phase as the two oil grooves at the mounting inner holes of the tapered bearings, and correspond to each other and are connected, as shown in FIG. Fig.10 As shown, the two oil grooves on the mounting inner hole of the mounting flange (11) are simultaneously connected to the oil through hole 102 on the spacer ring I (10).
[0036] In this embodiment, an oil injection device (7) is threadedly connected to one side of the interior of the reducer front body (8); the inner end of the oil injection device (7) is close to the bearings and gears inside the reducer front body (8); and one output end of the oil distributor (2) is threadedly connected to the outer end of the oil injection device (7) via an oil inlet pipe assembly IV (6).
[0037] When the lubricating and cooling system is in operation, the cooled lubricating oil is input from the lubricating and cooling system oil inlet (1) to the oil distributor (2) and then divided into four paths, which flow into the reducer through four oil inlet pipe assemblies respectively. The lubricating oil transported by the three paths of the oil inlet pipe assembly I (3), the oil inlet pipe assembly II (4) and the oil inlet pipe assembly III (5) respectively enter the annular oil groove II (91) of the spacer ring II (9) corresponding to the input end of the reducer through the through holes on the front body (8). The annular oil groove II (91) is gradually filled with lubricating oil and the lubricating oil is sprayed circumferentially onto the inner rings and rolling elements of the two tapered bearings through the oil spray holes (92) on the spacer ring II (9). The lubricating oil passes through the gaps of the bearings, and a part of it flows into the reducer and flows to the gear along the outer periphery of the gear shaft (14). The other part of the lubricating oil flows into the bearing, the gear shaft (14), the spacer ring I (10) and the gear shaft (14). In the cavity formed between the transparent cover (12), the lubricating oil accumulates in the cavity and enters its annular oil groove I (101) through the oil hole (102) on the spacer ring I (10). As the lubricating oil accumulates, the oil level in the cavity rises continuously until the oil level reaches the two oil grooves opened on the mounting flange (11). The lubricating oil enters the two oil grooves of the mounting flange (11) from the annular oil groove I (101) of the spacer ring I (10), and then enters the two oil grooves and oil holes in the inner hole of the tapered bearing installation, flows into the reducer, further lubricates the nearby gears and bearings, and finally flows into the oil pool inside the reducer; the lubricating oil flowing through the oil inlet pipe assembly IV (6) enters the oil spray device (7), and is sprayed onto the bearings and gears through four oil spray ports evenly opened along the circumference at the front end of the oil spray device (7), and then flows into the oil pool inside the reducer. The lubricating oil in the oil pool inside the reducer is continuously stirred by the rotating parts and flows, and finally flows out of the reducer from the oil outlet (13) of the lubrication and cooling system, and then enters the external cooling device.
[0038] In this embodiment, the oil grooves symmetrically arranged on the tapered bearing and the mounting flange (11) along the lower 1 / 3 of the circumferential direction have the function of overflowing and accumulating lubricating oil, which can prevent the skeleton oil seal from being damaged by excessive lubricating oil and excessive pressure in the cavity, and can also prevent the skeleton oil seal from being poorly lubricated due to insufficient lubricating oil in the cavity.
[0039] Matters not described in detail in this utility model are known technologies.
[0040] The embodiments described above are merely descriptions of preferred implementation modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should fall within the protection scope determined by the claims of the present invention.
Claims
1. A lubrication and cooling system for a central drive reducer of a multi-input screw machine, characterized in that: The system includes an oil separator, an oil inlet pipe assembly I, an oil inlet pipe assembly II, an oil inlet pipe assembly III, an oil inlet pipe assembly IV, a spacer ring II and a spacer ring I; the oil separator is threadedly connected to one side of the outside of the front body of the reducer, and its input end is the oil inlet, and it has multiple output ends; the output ends of the oil separator are respectively connected to the oil inlet pipe assembly I, the oil inlet pipe assembly II, the oil inlet pipe assembly III, and the oil inlet pipe assembly IV; the oil inlet pipe assembly I, the oil inlet pipe assembly II, and the oil inlet pipe assembly III are respectively connected to the two conical bearings inside each input end of the reducer; the spacer ring II is correspondingly installed between the two conical bearings inside the input end of the reducer, and its circumferential surface is provided with an annular oil groove and an oil injection hole connected with the corresponding oil inlet pipe assembly; the spacer ring I is correspondingly installed between the conical bearing inside the input end of the reducer and the transparent cover, and its circumferential surface is provided with an annular oil groove and an oil through hole; an oil outlet is provided at one end of the middle part of the reducer.
2. A lubrication and cooling system for a central drive reducer of a multi-input screw machine according to claim 1, characterized in that: At the mounting inner hole of the tapered bearing at the input end of the reducer, two oil grooves and two oil holes are symmetrically arranged at both ends of the lower 1 / 3 part in the circumferential direction, and the two oil holes are connected to the interior of the front body; two oil grooves are also arranged on the mounting inner hole of the mounting flange at the input end of the reducer, and are in the same phase as the two oil grooves at the mounting inner hole of the tapered bearing, correspond to each other and are connected, and are also connected to the oil holes on the spacer ring I.
3. The lubrication and cooling system for the central drive reducer of a multi-input screw machine according to claim 1, characterized in that: An oil injection device is arranged on one side of the interior of the front body of the reducer; the inner end of the oil injection device is close to the bearings and gears inside the front body of the reducer, and a plurality of oil injection ports are evenly distributed circumferentially; an output end of the oil distributor is connected to the outer end of the oil injection device through an oil inlet pipe assembly IV.
4. The lubrication and cooling system for the central drive reducer of a multi-input screw machine according to claim 1, characterized in that: The oil inlet pipe assembly is threadedly connected to the corresponding outer shell of the reducer input end.
5. The lubrication and cooling system for the central drive reducer of a multi-input screw machine according to claim 3 is characterized by: The oil injection device is threadedly connected to the front body of the reducer; the outer end of the oil injection device is threadedly connected to the corresponding oil inlet pipe assembly.
6. The lubrication and cooling system for the central drive reducer of a multi-input screw machine according to claim 1, characterized in that: The reducer is internally provided with a plurality of oil holes connected to the oil outlet to ensure smooth flow of the lubricating oil.