Chain bucket machine
By designing a closed housing and a dual cooling system in the chain bucket conveyor, the problem of easy bearing damage during high-temperature material conveying has been solved, achieving long bearing life and efficient heat preservation effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-01
- Publication Date
- 2026-03-24
AI Technical Summary
In the process of conveying high-temperature materials, the bearings of existing chain bucket conveyors are easily damaged by dust and high temperatures, resulting in a shortened service life.
A closed box structure was designed to isolate the bearing from the materials, and the bearing was cooled by a dual cooling system, combined with insulation materials to reduce heat loss.
It effectively prevents dust from entering the bearing, extends the bearing life, and maintains the bearing's normal operation in high-temperature environments through the cooling system, reducing heat loss.
Smart Images
Figure CN224029927U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a chain bucket machine. Background Technology
[0002] A chain bucket conveyor, also known as a chain bucket conveyor, uses a drive mechanism that pulls buckets filled with material along a track to transport them horizontally or at an incline via a chain. Due to its advantages such as flexible layout, large conveying capacity, long service life, low maintenance, low operating cost, and large conveying slope, it is widely used in the conveying of various loose materials in industries such as power plants, mines, metallurgy, and coal.
[0003] In high-temperature material conveying scenarios, such as for upgraded coal, where the temperature ranges from 550 to 650℃, the temperature drop must be controlled within 1℃ / m of equipment length. This necessitates that the chain bucket conveyor maintain the material's temperature during transport. Furthermore, due to the high temperature and dust levels during upgraded coal conveying, prolonged exposure of the chain bucket conveyor's bearings to these dusty and high-temperature environments can easily lead to bearing damage. Existing chain bucket conveyors are mostly open-structured, resulting in poor material insulation, and the high-temperature, high-dust environment during upgraded coal conveying further exacerbates bearing damage. Utility Model Content
[0004] The technical problem to be solved by this utility model is to provide a chain bucket machine that separates the bearing from the material and extends the service life of the bearing.
[0005] The technical solution adopted in this utility model is:
[0006] A chain bucket machine includes a chain roller arranged opposite each other, a chain plate arranged above the chain roller, and a chain bucket arranged between the two opposite chain plates. The machine includes a housing, the chain roller is located inside the housing, a bearing seat is provided on the outside of the housing, and a rotating shaft is installed inside the bearing seat via a bearing. One end of the rotating shaft extends into the inside of the housing, and the chain roller is installed on the inner end of the rotating shaft.
[0007] Furthermore, a blind hole is provided at the outer end of the rotating shaft along the axial direction of the rotating shaft, and a first cooling pipe is provided in the blind hole. A first drain pipe for draining coolant is provided on the outer side of the rotating shaft.
[0008] Furthermore, the first drain pipe is fitted onto the end of the bearing housing, the rotating shaft is located inside the first drain pipe, and a through hole is opened on the top side wall of the first drain pipe for the first cooling pipe to pass through.
[0009] Furthermore, a rotary joint is provided at the end of the blind hole, the first cooling pipe is connected to the rotary joint, a guide pipe is provided inside the blind hole, and a drain hole connected to the blind hole is provided on the side wall of the rotating shaft near the rotary joint. The first drain pipe is covered at the end of the bearing seat, the rotary joint extends out of the outside of the first drain pipe, and the drain hole is located inside the first drain pipe.
[0010] Furthermore, a cooling cavity is provided on the side wall of the bearing housing, and the cooling cavity is connected to a second cooling pipe. A drain cavity connected to the cooling cavity is also provided on the side wall of the bearing housing, and the drain cavity is connected to the second drain pipe to discharge the coolant.
[0011] Furthermore, thermal insulation material is provided on the outer wall of the box, the thermal insulation material including aluminum silicate ceramic fiber and nano aerogel felt, or the thermal insulation material is rock wool.
[0012] Furthermore, stepped holes are provided on the side wall of the bearing housing, and the bearing housing is fixedly connected to the housing by bolts installed in the stepped holes.
[0013] The positive effects of this utility model are:
[0014] This utility model adds a box body to the existing technology. The chain rollers and chain bucket are located inside the box body, while the bearing seats and bearings are located outside the box body. The box body isolates the materials from the bearings and bearing seats, avoiding damage to the bearings caused by dust and high temperature environments. At the same time, the box body can also play a heat preservation role, reducing heat loss of materials during transportation. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the structure of this utility model;
[0016] Figure 2 This is a schematic diagram of the fit between the rotating shaft and the bearing housing of this utility model;
[0017] Figure 3 This is an axial sectional view of the fit between the rotating shaft and the bearing housing of this utility model;
[0018] Figure 4 This is a schematic diagram of the rotary joint structure of this utility model. Detailed Implementation
[0019] As attached Figures 1-4 As shown, this utility model discloses a chain bucket conveyor, including a housing 1, a bearing seat 5 disposed on the outside of the housing 1, a rotating shaft 7 mounted in the bearing seat 5 via a bearing 17, a chain roller 2 mounted on the end of the rotating shaft 7, a chain plate 3 located on the chain roller 2, and a chain bucket 4 disposed between two opposing chain plates 3. The chain plate 3 is driven by a drive wheel located at its end. The bearing seat 5 is located on the outside of the housing 1, and the bearing 17 is fitted and mounted in the bearing seat 5 and located on the outside of the housing 1. One end of the rotating shaft 7 extends into the inside of the housing 1, and the chain roller 2 is mounted on the inner side of the rotating shaft 7, located inside the housing 1. In this way, the bearing and the chain bucket 4 are separated by the housing 1, preventing dust and other impurities during material conveying from entering the bearing 17, thereby extending the service life of the bearing. Furthermore, the material inside the housing 1 also reduces heat loss.
[0020] A stepped hole 13 is provided on the side wall of the bearing housing 5. The bearing housing 5 is fixedly installed on the side wall of the housing 1 by bolts installed in the stepped hole 13. Alternatively, a support frame is provided on the ground, and the bearing housing 5 is installed on the support frame and located on the outer side of the side wall of the housing 1.
[0021] To prevent the bearings from overheating during prolonged operation of the chain bucket excavator, a cooling structure is installed. Part of the cooling structure is located inside the rotating shaft 7. Specifically, a blind hole 8 is formed at the outer end of the rotating shaft 7, along its axial center. The depth of the blind hole 8 preferably reaches the inner bearing 17 to ensure sufficient cooling of the inner rings of both bearings. A first cooling pipe 9 passes through the blind hole 8, and a first drain pipe 6 for discharging coolant is provided on the outer side of the rotating shaft 7. Coolant enters the blind hole 8 through the first cooling pipe 9, cooling the rotating shaft 7 and thus the inner rings of the bearings. After heat exchange, the coolant flows out from the opening of the blind hole 8 and into the first drain pipe 6. Preferably, the first drain pipe 6 is L-shaped, with its horizontal section extending into the blind hole 8 and suspended in the air, thus not affecting the rotation of the rotating shaft 7.
[0022] In one embodiment, the first drain pipe 6 is fitted over the end of the bearing housing 5, and the blind hole opening of the rotating shaft 7 is located inside the first drain pipe 6. A through hole 14 is opened on the top side wall of the first drain pipe 6 for the first drain pipe 9 to pass through. The coolant flowing out from the opening of the blind hole 8 can directly enter the first drain pipe 6. In another embodiment of the present invention, a rotary joint 15 is connected to the opening of the blind hole 8, and the first cooling pipe 9 communicates with the rotary joint 15. A guide pipe 20 is connected to the other end of the rotary joint 15 to guide the coolant to the inner end of the blind hole. In this case, a drain hole 16 communicating with the blind hole 8 must be opened on the side wall of the rotating shaft 7. The drain hole 16 is located on the side close to the rotary joint 15. The first drain pipe 6 is fitted over the end of the bearing housing 5, and the outer end of the rotating shaft 7 extends out of the first drain pipe 6. The rotary joint 15 is located outside the first drain pipe 6, and the blind hole 8 communicates with the first drain pipe 6 through the drain hole 16. At this time, the first cooling pipe 9 does not need to enter the first drain pipe 6, and the rotation of the shaft 7 can be seen from the outside.
[0023] Another part of the cooling structure is located inside the bearing housing 5. Specifically, a cooling cavity 10 is provided on the side wall of the bearing housing 5. The width of the cooling cavity 10 can cover the positions of the two bearings 17 as much as possible to achieve a better cooling effect. The cooling cavity 10 is connected to a second cooling pipe 12 through a water inlet cavity provided on the side wall of the bearing housing 5. A drain cavity 11 connected to the cooling cavity 10 is also provided on the side wall of the bearing housing 5. In this embodiment, the drain cavity 11 is arranged along the axial direction of the bearing housing 5, located outside the cooling cavity 10, with its opening located at the end of the bearing housing 5. The drain cavity 11 is connected to the second drain pipe 19. Preferably, the water inlet cavity is located on the upper side of the bearing housing 5, and the drain cavity 11 is located on the lower side of the bearing housing 5. Preferably, the connection points between the second cooling pipe 12 and the cooling cavity 10, and between the cooling cavity 10 and the drain cavity 11, are located on the left and right sides of the cooling cavity 10, respectively. Water enters from one side and drains from the other side, which can better cool the bearing housing 5, thereby cooling the outer ring of the bearing 17.
[0024] Preferably, the first drain pipe 6 and the second drain pipe 19 can be merged into the main drain pipe and discharged together.
[0025] The two cooling structures cool the shaft 7 and the bearing housing 5 respectively, thereby reducing the temperature inside and outside the bearing and ensuring that it is not easily damaged during long-term operation.
[0026] To further achieve thermal insulation, thermal insulation material 18 is provided on the outer side wall of the box 1. This thermal insulation material can be aluminum silicate ceramic fiber and nano aerogel felt, or rock wool.
[0027] Since the shaft 7 will not rotate after the bearing 17 is damaged, the condition of the bearing 17 can be determined by monitoring the rotation of the shaft 7. This can be done automatically using an encoder, proximity switch, or other methods to monitor the shaft's rotation. Figure 4 A pointer or marker is installed on the outer end of the rotating shaft 7 of the structure shown to enable visual inspection.
[0028] In this invention, the chain bucket 4 and bearing 17 are located on the inner and outer sides of the housing 1, respectively. When transporting materials with high dust content, this effectively prevents a large amount of dust from entering the bearing 17, and also insulates against heat, preventing damage caused by prolonged exposure to high temperatures, and reducing the bearing's cooling requirements. Simultaneously, the bearing 17 is cooled by dual cooling pipes, ensuring its long-term operation. The housing 1 provides insulation, preventing heat loss during long-distance transport of materials with special requirements.
[0029] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.
Claims
1. A chain bucket machine, comprising oppositely arranged chain rollers (2), chain plates (3) disposed above the chain rollers (2), and chain buckets (4) disposed between the two opposite chain plates (3), characterized in that It also includes a housing (1), a chain wheel (2) located inside the housing (1), a bearing seat (5) provided on the outside of the housing (1), and a rotating shaft (7) installed inside the bearing seat (5) via a bearing (17). One end of the rotating shaft (7) extends into the inside of the housing (1), and the chain wheel (2) is installed on the inner end of the rotating shaft (7).
2. A chain bucket machine according to claim 1, characterized in that... A blind hole (8) is provided at the outer end of the rotating shaft (7) and along the axial direction of the rotating shaft (7). A first cooling pipe (9) is provided in the blind hole (8). A first drain pipe (6) for draining coolant is provided on the outer side of the rotating shaft (7).
3. A chain bucket machine according to claim 2, characterized in that... The first drain pipe (6) is covered at the end of the bearing seat (5), the rotating shaft (7) is located inside the first drain pipe (6), and a through hole (14) is opened on the top side wall of the first drain pipe (6) for the first cooling pipe (9) to pass through.
4. A chain bucket machine according to claim 2, characterized in that... A rotary joint (15) is provided at the end of the blind hole (8). The first cooling pipe (9) is connected to the rotary joint (15). A guide pipe (20) is provided inside the blind hole (8). A drain hole (16) connected to the blind hole (8) is provided on the side wall of the rotating shaft (7) near the rotary joint (15). The first drain pipe (6) is covered at the end of the bearing seat (5). The rotary joint (15) extends out of the outside of the first drain pipe (6). The drain hole (16) is located inside the first drain pipe (6).
5. A chain bucket machine according to claim 1 or 2, characterized in that... A cooling chamber (10) is provided on the side wall of the bearing housing (5). The cooling chamber (10) is connected to a second cooling pipe (12). A drain chamber (11) is also provided on the side wall of the bearing housing (5) and is connected to the cooling chamber (10). The drain chamber (11) is connected to the second drain pipe (19) to realize the discharge of coolant.
6. A chain bucket machine according to claim 1, characterized in that... Insulation material (18) is provided on the outer side wall of the box (1). The insulation material (18) includes aluminum silicate ceramic fiber and nano aerogel felt, or the insulation material is rock wool.
7. A chain bucket machine according to claim 1, characterized in that... A stepped hole (13) is provided on the side wall of the bearing housing (5), and the bearing housing (5) is fixedly connected to the housing (1) by bolts provided in the stepped hole (13).