A double row chain with an extended maintenance cycle

Abstract

The utility model discloses a double row chain of prolonging maintenance cycle, including two outer chain plates, intermediate chain board and two inner chain links, the rear end of two outer chain plates and intermediate chain board is rotatedly connected through the pivot with the front end of two inner chain links, the intermediate chain board and inner chain link are located between two outer chain plates, the intermediate chain board is located between two inner chain links, the inner chain link includes two inner chain plates, the inner chain plate with corresponding outer chain plate and intermediate chain board all is equipped with the labyrinth seal structure between, the labyrinth seal structure includes the outer annular body and the inner annular body in the outer annular body, the inside space of inner annular body is the oil storage cavity, the free end of inner annular body is equipped with the sealing member and is used for preventing the lubricating oil in oil storage cavity from leaking from the labyrinth seal structure, compared with prior art, can improve the service life and maintenance interval period of double row conveying chain significantly.

Description

Technical Field

[0001] This utility model relates to the technical field of building material conveying machinery, and in particular to the technical field of a double-row chain that extends the maintenance cycle. Background Technology

[0002] Conveyor chains are used in chain bucket elevators, which are enclosed spaces. During operation, dirty, hard particles or dust from the harsh environment can enter the chain hinges or other gaps. These hard particles or dust act as abrasives, accelerating the wear of the pins and sleeves, leading to chain wear and reduced service life. This is a common problem with conveyor chains used in elevators. Furthermore, during factory assembly, a certain amount of lubricating oil is applied to the pins and sleeves to lubricate and reduce wear. However, after a few months of operation, this lubricating oil is easily depleted, resulting in dry friction and shorter maintenance intervals. Therefore, it is necessary to design a conveyor chain that meets the operational requirements of elevators, requiring the sleeves and pins to remain in grease for extended periods, significantly improving the service life and maintenance intervals of the conveyor chain. Summary of the Invention

[0003] The purpose of this invention is to solve the problems in the prior art and propose a double-row chain that extends the maintenance cycle, which can significantly improve the service life and maintenance interval of the double-row conveyor chain.

[0004] To achieve the above objectives, this utility model proposes a double-row chain for extending maintenance cycles, comprising two outer chain plates, a middle chain plate, and two inner chain links. The rear ends of the two outer chain plates and the middle chain plate are rotatably connected to the front ends of the two inner chain links via pins. The middle chain plate and the inner chain links are located between the two outer chain plates, and the middle chain plate is located between the two inner chain links. Each inner chain link includes two inner chain plates. A labyrinth seal structure is provided between each inner chain plate and its corresponding outer chain plate and middle chain plate. The labyrinth seal structure includes an outer ring body and an inner ring body located within the outer ring body. The internal space of the inner ring body is an oil storage cavity. A seal is provided at the free end of the inner ring body to prevent lubricating oil in the oil storage cavity from leaking from the labyrinth seal structure.

[0005] Preferably, the inner link further includes a sleeve fitted on the pin, with inner link plates fixedly fitted at both ends of the sleeve, and rollers located between the two inner link plates fitted on the sleeve.

[0006] Preferably, one end of the pin is provided with an oil injection channel, the input end of the oil injection channel is provided with an oil injection nozzle, and the circumferential surface of the pin is provided with two annular grooves, both of which are connected to the oil injection channel through through holes, and the two annular grooves are respectively located in the corresponding sleeves.

[0007] Preferably, the sealing element includes a T-shaped sealing sleeve, the large-diameter section of which is located between the free end of the inner ring body and the inner chain plate, the small-diameter section of which is located on the inner side of the inner ring body, and the outer ring of the small-diameter section of which is provided with several elastic conical sealing portions.

[0008] Preferably, the large-diameter section of the T-shaped sealing sleeve is bonded and fixedly connected to the inner chain plate, and the outer diameter of the large-diameter section of the T-shaped sealing sleeve is equal to the inner diameter of the outer ring body.

[0009] Preferably, the wall thickness of the elastic conical seal gradually decreases from top to bottom, and the outer diameter of the large end of the elastic conical seal is larger than the inner diameter of the inner ring.

[0010] Preferably, the oil storage cavity is provided with an oil storage sponge.

[0011] The beneficial effects of this utility model are as follows: This utility model uses an outer ring and an inner ring located within the outer ring to form a labyrinth seal structure, which provides support and protection for the seal. The internal space of the inner ring is an oil storage cavity, and the free end of the inner ring is equipped with a seal to prevent the lubricating oil in the oil storage cavity from leaking from the labyrinth seal structure. The oil storage cavity sealed by the seal increases the amount of lubricating oil stored. The cooperation between the labyrinth seal structure and the seal prevents materials from entering the gap between the pin and the sleeve. Compared with the prior art, this can significantly improve the service life and maintenance interval of the double-row conveyor chain.

[0012] The features and advantages of this utility model will be described in detail through embodiments and accompanying drawings. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of a double-row chain that extends the maintenance cycle according to this utility model; Figure 2 yes Figure 1 A magnified view of A in the middle.

[0014] In the diagram: 1-Outer chain plate, 2-Intermediate chain plate, 3-Inner chain link, 4-Pin, 5-Labyrinth seal structure, 6-Seal, 7-Through hole, 8-Annular groove, 9-Oil reservoir sponge, 10-Oil nozzle, 11-Oil injection channel, 31-Inner chain plate, 32-Sleeve, 33-Roller, 51-Outer annular body, 52-Inner annular body, 53-Oil reservoir cavity, 61-T-shaped sealing sleeve, 62-Elastic conical sealing part. Detailed Implementation

[0015] See Figure 1 , 2This utility model discloses a double-row chain for extending maintenance cycles, comprising two outer chain plates 1, a middle chain plate 2, and two inner chain links 3. The rear ends of the two outer chain plates 1 and the middle chain plate 2 are rotatably connected to the front ends of the two inner chain links 3 via pins 4. The middle chain plate 2 and the inner chain links 3 are located between the two outer chain plates 1 and between the two inner chain links 3. Each inner chain link 3 includes two inner chain plates 31. A labyrinth seal structure 5 is provided between each inner chain plate 31 and the corresponding outer chain plate 1 and middle chain plate 2. The labyrinth seal structure 5 includes an outer ring body 51 and an inner ring body 52 located within the outer ring body 51. The internal space of the inner ring body 52 is an oil storage cavity 53. A sealing element 6 is provided at the free end of the inner ring body 52 to prevent lubricating oil in the oil storage cavity 53 from leaking from the labyrinth seal structure 5.

[0016] The inner link 3 also includes a sleeve 32 sleeved on the pin 4. Both ends of the sleeve 32 are fixedly sleeved with inner link plates 31, and a roller 33 located between the two inner link plates 31 is sleeved on the sleeve 32.

[0017] One end of the pin 4 is provided with an oil injection channel 11, and the input end of the oil injection channel 11 is provided with an oil injection nozzle 10. The circumferential surface of the pin 4 is provided with two annular grooves 8. The annular grooves 8 are connected to the oil injection channel 11 through through holes 7. The two annular grooves 8 are respectively located in the corresponding sleeves 32.

[0018] The sealing element 6 includes a T-shaped sealing sleeve 61. The large-diameter section of the T-shaped sealing sleeve 61 is located between the free end of the inner ring body 52 and the inner chain plate 31. The small-diameter section of the T-shaped sealing sleeve 61 is located inside the inner ring body 52. ​​The outer ring of the small-diameter section of the T-shaped sealing sleeve 61 is provided with a plurality of elastic conical sealing parts 62 for sealing with the inner ring body 52.

[0019] The large-diameter section of the T-shaped sealing sleeve 61 is bonded and fixedly connected to the inner chain plate 31, and the outer diameter of the large-diameter section of the T-shaped sealing sleeve 61 is equal to the inner diameter of the outer ring body 51.

[0020] The wall thickness of the elastic conical sealing part 62 gradually decreases from top to bottom, and the outer diameter of the large end of the elastic conical sealing part 62 is larger than the inner diameter of the inner ring body 52.

[0021] The oil storage cavity 53 is equipped with an oil storage sponge 9.

[0022] The working process of this utility model: This utility model discloses a double-row conveyor chain with extended maintenance cycle. During operation, a labyrinth seal structure is formed by an outer ring and an inner ring located within the outer ring, which supports and protects the seal. The internal space of the inner ring is an oil storage cavity, and a seal is provided at the free end of the inner ring to prevent lubricating oil in the oil storage cavity from leaking from the labyrinth seal structure. The oil storage cavity sealed by the seal increases the amount of lubricating oil stored. The cooperation between the labyrinth seal structure and the seal prevents material from entering the gap between the pin and the sleeve. Compared with the prior art, this invention can significantly improve the service life and maintenance interval of the double-row conveyor chain.

[0023] Lubricating oil enters the oil injection channel 11 through the oil injection nozzle 10, then enters the annular groove 8 through the through hole 7, and then enters the oil storage cavity 53 through the gap between the pin 4 and the sleeve 32, thus achieving the maintenance function and increasing the service life of the chain.

[0024] The design of the annular groove 8 can increase the oil storage capacity, improve the lubrication effect, and reduce the wear of the pin sleeve.

[0025] When the double-row chain is assembled in the production workshop, it is required that the oil storage sponge 9 and the gap between the pin 4 and the sleeve 32 be completely filled with lubricating oil. After the double-row chain is used, the lubricating oil will be slowly consumed. When the lubricating oil is consumed, the lubricating oil in the oil storage sponge 9 will be filled with lubricating oil under the influence of gravity.

[0026] The above embodiments are illustrative of the present invention and are not intended to limit the present invention. Any simple modifications to the present invention are within the protection scope of the present invention.

Claims

1. A double-row chain with extended maintenance cycle, characterized in that: It includes two outer link plates (1), an intermediate link plate (2), and two inner link links (3). The rear ends of the two outer link plates (1) and the intermediate link plate (2) are rotatably connected to the front ends of the two inner link links (3) via pins (4). The intermediate link plate (2) and the inner link links (3) are located between the two outer link plates (1), and the intermediate link plate (2) is located between the two inner link links (3). The inner link links (3) include two inner link plates (31). A labyrinth sealing structure (5) is provided between the corresponding outer chain plate (1) and the intermediate chain plate (2). The labyrinth sealing structure (5) includes an outer ring (51) and an inner ring (52) located inside the outer ring (51). The internal space of the inner ring (52) is an oil storage cavity (53). A sealing element (6) is provided at the free end of the inner ring (52) to prevent the lubricating oil in the oil storage cavity (53) from leaking from the labyrinth sealing structure (5).

2. The double-row chain with extended maintenance cycle as described in claim 1, characterized in that: The inner link (3) also includes a sleeve (32) sleeved on the pin (4), with inner link plates (31) fixedly sleeved at both ends of the sleeve (32), and a roller (33) located between the two inner link plates (31) sleeved on the sleeve (32).

3. The double-row chain with extended maintenance cycle as described in claim 2, characterized in that: One end of the pin (4) is provided with an oil injection channel (11), and the input end of the oil injection channel (11) is provided with an oil injection nozzle (10). The circumferential surface of the pin (4) is provided with two annular grooves (8). The annular grooves (8) are connected to the oil injection channel (11) through through holes (7). The two annular grooves (8) are located in the corresponding sleeves (32).

4. The double-row chain with extended maintenance cycle as described in claim 1, characterized in that: The sealing element (6) includes a T-shaped sealing sleeve (61), the large diameter section of which is located between the free end of the inner ring (52) and the inner chain plate (31), the small diameter section of which is located inside the inner ring (52), and the outer ring of the small diameter section of which is provided with several elastic conical sealing parts (62).

5. A double-row chain with extended maintenance cycle as described in claim 4, characterized in that: The large-diameter section of the T-shaped sealing sleeve (61) is bonded and fixedly connected to the inner chain plate (31), and the outer diameter of the large-diameter section of the T-shaped sealing sleeve (61) is equal to the inner diameter of the outer ring body (51).

6. A double-row chain with extended maintenance cycle as described in claim 4, characterized in that: The wall thickness of the elastic conical sealing part (62) gradually decreases from top to bottom, and the outer diameter of the large end of the elastic conical sealing part (62) is larger than the inner diameter of the inner ring body (52).

7. A double-row chain with extended maintenance cycle as described in any one of claims 1 to 6, characterized in that: The oil storage cavity (53) is equipped with an oil storage sponge (9).

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