A rolling dust-proof chain with balls

Abstract

The present invention proposes a rolling dustproof chain with balls, comprising inner links and outer links, the inner links and outer links are alternately connected to form a chain, the inner links comprise two inner chain plates and a sleeve, the outer links comprise two outer chain plates and a pin, the inner chain plates are connected to the outer chain plates through a pin, the pin is installed in cooperation with the sleeve, and further comprises a roller and an intermediate ball sleeve, the sleeve, the intermediate ball sleeve and the roller are sequentially sleeved on the outside of the pin from the inside to the outside, a plurality of balls are evenly distributed on the intermediate ball sleeve, an oil injection channel is provided in the pin, an oil cup is installed at the entrance of the oil injection channel, a plurality of first oil outlets are provided at the outer wall of the oil injection channel, a plurality of second oil outlets corresponding to the position of the first oil outlets are provided on the sleeve, and a labyrinth seal is installed between the two ends of the roller and the inner chain plate. The chain has little wear itself, can reduce energy consumption, and can effectively prevent dust.

Description

[Technical field]

[0001] The invention relates to the technical field of bulk material conveying, in particular to a rolling dust-proof chain with balls. [Background technology]

[0002] At present, the traditional material conveying chain is used with rollers fitted on chain sleeves. When the chain moves on the guide rail, the roller rolls, and sliding friction occurs between the inner wall of the roller and the outer wall of the sleeve. The friction generated hinders the movement and conveying of the chain. This chain has the following defects: Since the roller and the sleeve fit each other, the inner wall of the roller and the outer wall of the sleeve slide relative to each other. Compared with rolling friction, sliding friction causes greater wear on parts, and also generates greater resistance and consumes more energy. In addition, the traditional material conveying chain generally injects lubricating oil between the inner wall of the roller and the outer wall of the sleeve through an oil cup, thereby reducing friction. However, since there is a certain gap between the inner wall of the roller and the outer wall of the sleeve, external dust particles can easily enter it. As the use time increases, the gap will gradually increase, and the dust particles entering from the outside will also increase, and the degree of wear on the roller and the sleeve will gradually increase. [Summary of the invention]

[0003] The purpose of the present invention is to solve the problems in the prior art and to provide a rolling dust-proof chain with balls, which has little wear, can reduce energy consumption, and can effectively prevent dust.

[0004] To achieve the above-mentioned purpose, the present invention proposes a rolling dust-proof chain with balls, comprising an inner link and an outer link, the inner link and the outer link are alternately connected to form a chain, the inner link comprises two inner chain plates and two sleeves installed between the two inner chain plates, the outer link comprises two outer chain plates and two pins installed between the two outer chain plates, the inner chain plate is connected to the outer chain plate through a pin, the pin is installed in cooperation with the sleeve, and also comprises a roller and an intermediate ball sleeve, the sleeve, the intermediate ball sleeve and the roller are sequentially sleeved on the outside of the pin from the inside to the outside, a plurality of balls are evenly distributed on the intermediate ball sleeve, an oil injection channel is provided in the pin, an oil cup is installed at the entrance of the oil injection channel, a plurality of first oil outlets are provided at the outer wall of the oil injection channel, a plurality of second oil outlets corresponding to the positions of the first oil outlets are provided on the sleeve, and a labyrinth seal is installed between the two ends of the roller and the inner chain plate.

[0005] Preferably, the labyrinth seal comprises an outer annular metal sleeve and an inner annular metal sleeve, the inner wall of the inner chain plate is provided with an annular groove, the outer annular metal sleeve is installed in the annular groove, both ends of the roller have steps, the inner annular metal sleeve is clamped at the steps, the inner ring of the outer annular metal sleeve has a first skirt extending inwardly toward the side where the inner annular metal sleeve is located, the outer ring of the inner annular metal sleeve has a second skirt extending outwardly toward the side where the outer annular metal sleeve is located, and there is a gap between the inner wall of the first skirt and the outer wall of the second skirt, and the two can rotate relative to each other without contacting each other.

[0006] Preferably, the first skirt is arranged on the outer side of the second skirt, and the two are parallel.

[0007] Preferably, threaded connectors are provided at both ends of the pin shaft, and first flattened portions are symmetrically provided on the outer walls at both ends of the pin shaft. The inner hole of the outer link plate is pressed into the first flattened portions at both ends of the pin shaft, and the outer link plate is fixed to both ends of the pin shaft by nuts and washers, and the nuts and washers are installed on the threaded connectors.

[0008] Preferably, the oil injection channel includes an oil inlet channel arranged along its axial direction and an oil outlet channel arranged along its radial direction. One end of the oil inlet channel is provided with an inlet at the end face of the threaded connector, and the other end is connected to the middle part of the oil outlet channel. Both ends of the oil outlet channel are symmetrically provided with first oil outlets on the outer wall of the pin shaft.

[0009] Preferably, the inlet is provided with an internal thread, and the oil cup is threadedly connected and fixed to the inlet.

[0010] Preferably, an inner wall of the inner ring of the roller is provided with an annular oil storage groove, and the position of the oil storage groove corresponds to the position of the second oil outlet.

[0011] Preferably, second flattened portions are symmetrically provided on the outer walls at both ends of the sleeve, and the inner holes of the inner link plates are pressed into the second flattened portions at both ends of the sleeve.

[0012] Preferably, the intermediate ball sleeve further comprises a sleeve with holes, a plurality of small holes are evenly arranged on the outer circumference of the sleeve with holes, and the balls are embedded in the small holes of the sleeve with holes and can roll freely.

[0013] Beneficial effects of the present invention:

[0014] 1. By setting an intermediate sleeve with embedded balls between the inner wall of the roller and the outer wall of the sleeve, the roller and the sleeve are changed into rolling friction, and the rolling friction between the roller and the sleeve is achieved by the rolling of the balls. Compared with traditional chains, this kind of rolling dust-proof chain with balls has less resistance and wear during operation, and is flexible in operation, which can effectively reduce energy consumption.

[0015] 2. Using the principle of labyrinth dust prevention, two matching annular metal sleeves are set between the inner chain plate and the roller. The two annular metal sleeves are respectively stuck on the inner chain plate and the roller, leaving a certain gap between the two, but no contact. The self-contained annular metal sleeve can effectively prevent external dust particles from entering the rolling gap of the sprocket, thereby increasing the service life of the chain.

[0016] The features and advantages of the present invention will be described in detail through embodiments in conjunction with the accompanying drawings.

Brief Description of the Drawings

[0017] Figure 1 It is a structural schematic diagram of a rolling dust-proof chain with balls of the present invention;

[0018] Figure 2 It is a structural schematic diagram of a sleeve of a rolling dustproof chain with a ball according to the present invention;

[0019] Figure 3 It is a structural schematic diagram of a pin shaft of a rolling dustproof chain with a ball according to the present invention;

[0020] Figure 4 It is a structural schematic diagram of a roller of a rolling dustproof chain with a ball according to the present invention;

[0021] Figure 5 It is a structural schematic diagram of an intermediate ball sleeve of a rolling dustproof chain with balls according to the present invention;

[0022] Figure 6 The present invention is a schematic structural diagram of a labyrinth seal of a rolling dustproof chain with balls. [Specific implementation method]

[0023] See also Figures 1 to 6 The present invention discloses a rolling dustproof chain with a ball, comprising an inner link and an outer link, wherein the inner link and the outer link are alternately connected to form a chain, wherein the inner link comprises two inner chain plates 1 and two sleeves 3 installed between the two inner chain plates 1, wherein the outer chain comprises two outer chain plates 2 and two pins 4 installed between the two outer chain plates 2, wherein the inner chain plates 1 are connected to the outer chain plates 2 via the pins 4, wherein the pins 4 are installed in cooperation with the sleeves 3, and further comprising a roller 5 and an intermediate ball sleeve 6, wherein the inner chain plates 1 and the outer chain plates 2 are connected to each other via the pins 4, wherein the pins 4 are installed in cooperation with the sleeves 3, wherein the roller 5 and the intermediate ball sleeve 6 are installed in cooperation with the outer chain plates 2. The sleeve 3, the intermediate ball sleeve 6 and the roller 5 are sequentially sleeved on the outside of the pin shaft 4 from the inside to the outside, and a plurality of balls 61 are evenly distributed on the intermediate ball sleeve 6. An oil injection channel 41 is provided in the pin shaft 4, and an oil cup 7 is installed at the entrance of the oil injection channel 41. A plurality of first oil outlets are provided at the outer wall of the oil injection channel 41, and a plurality of second oil outlets 32 corresponding to the positions of the first oil outlets are provided on the sleeve 3. A labyrinth seal 8 is installed between the two ends of the roller 5 and the inner chain plate 1.

[0024] Furthermore, the labyrinth seal 8 includes an outer annular metal sleeve 81 and an inner annular metal sleeve 82. The inner wall of the inner link plate 1 is provided with an annular groove 11, and the outer annular metal sleeve 81 is installed in the annular groove 11. Both ends of the roller 5 have steps 51, and the inner annular metal sleeve 82 is clamped at the steps 51. The inner ring of the outer annular metal sleeve 81 has a first skirt 811 extending inwardly and obliquely toward the side where the inner annular metal sleeve 82 is located, and the outer ring of the inner annular metal sleeve 82 has a second skirt 821 extending outwardly and obliquely toward the side where the outer annular metal sleeve 81 is located. There is a gap between the inner wall of the first skirt 811 and the outer wall of the second skirt 821, and the two can rotate relative to each other without contact. The first skirt 811 is arranged on the outer side of the second skirt 821, and the two are parallel.

[0025] Furthermore, threaded connectors 42 are provided at both ends of the pin shaft 4, and first flattened portions 43 are symmetrically provided on the outer walls at both ends of the pin shaft 4. The inner hole of the outer link plate 2 is pressed into the first flattened portions 43 at both ends of the pin shaft 4, and the outer link plate 2 is fixed to both ends of the pin shaft 4 by nuts 421 and washers 422. The nuts 421 and washers 422 are installed on the threaded connectors 42.

[0026] Furthermore, the oil injection channel 41 includes an oil inlet channel arranged along its axial direction and an oil outlet channel arranged along its radial direction. One end of the oil inlet channel is provided with an inlet at the end surface of the threaded connector 42, and the other end is connected to the middle of the oil outlet channel. Both ends of the oil outlet channel are symmetrically provided with first oil outlets 44 at the outer wall of the pin 4, and the lubricating oil can enter the middle ball sleeve between the pin and the sleeve through the oil injection pipeline. In addition, in this embodiment, a groove is also provided at the position of the first oil outlet 44 to increase the oil storage capacity.

[0027] Furthermore, the inlet is provided with an internal thread, and the oil cup 7 is threadedly connected and fixed to the inlet, which is easy to install, and the oil filling channel 41 is conveniently supplied with oil through the oil cup.

[0028] Furthermore, an inner wall of the inner ring of the roller 5 is provided with an annular oil storage groove 52 , and the position of the oil storage groove 52 corresponds to the position of the second oil outlet 32 ​​, and is used for storing lubricating oil.

[0029] Furthermore, second flattened portions 31 are symmetrically provided on the outer walls at both ends of the sleeve 3 , and the inner holes of the inner link plates 1 are pressed into the second flattened portions 31 at both ends of the sleeve 3 .

[0030] Furthermore, the intermediate ball sleeve 6 also includes a perforated sleeve 62, and a plurality of small holes are evenly arranged on the outer circumference of the perforated sleeve 62. The balls 61 are embedded in the small holes of the perforated sleeve 62 and can roll freely. When the roller 5 rolls, the balls 61 in the intermediate ball sleeve 6 roll accordingly, thereby changing the original sliding friction of the roller 5 into rolling friction.

[0031] Working process of the present invention:

[0032] The present invention discloses a rolling dustproof chain with balls. An intermediate ball sleeve 6 with embedded balls is provided between the roller 5 and the sleeve 3, so that the rolling of the roller 5 is changed from original sliding friction to rolling friction. The chain has small self-resistance and small wear during operation, and is flexible in operation, thereby effectively reducing energy consumption. An oil storage groove 52 is provided in the roller 5 to expand the storage capacity of lubricating oil. A labyrinth seal 8 is provided between the roller 5 and the inner chain plate 1. The two annular metal sleeves are used in pair to play a dustproof role, which can effectively block external dust particles from entering the rolling gap of the sprocket, thereby increasing the service life of the chain.

[0033] The above embodiments are intended to illustrate the present invention, not to limit the present invention. Any solution that is a simple transformation of the present invention belongs to the protection scope of the present invention.

Claims

1. A rolling dustproof chain with balls, comprising inner links and outer links, wherein the inner links and the outer links are alternately connected to form a chain, wherein the inner links comprise two inner link plates (1) and two sleeves (3) installed between the two inner link plates (1), and the outer links comprise two outer link plates (2) and two pins (4) installed between the two outer link plates (2), wherein the inner link plates (1) and the outer link plates (2) are connected via the pins (4), and the pins (4) are installed in cooperation with the sleeves (3), characterized in that: The invention also comprises a roller (5) and an intermediate ball sleeve (6), wherein the sleeve (3), the intermediate ball sleeve (6) and the roller (5) are sequentially sleeved on the outside of the pin shaft (4) from the inside to the outside, and a plurality of balls (61) are evenly distributed on the intermediate ball sleeve (6). An oil injection channel (41) is provided in the pin shaft (4), and an oil cup (7) is installed at the entrance of the oil injection channel (41). A plurality of first oil outlets are provided on the outer wall of the oil injection channel (41), and a plurality of second oil outlets (32) corresponding to the positions of the first oil outlets are provided on the sleeve (3). A labyrinth seal (8) is installed between the two ends of the roller (5) and the inner chain plate (1), and the labyrinth seal (8) comprises an outer annular metal sleeve (81) and an inner annular metal sleeve (82). The inner wall of the inner link plate (1) is provided with an annular groove (11), the outer annular metal sleeve (81) is mounted in the annular groove (11), the two ends of the roller (5) have steps (51), the inner annular metal sleeve (82) is clamped on the steps (51), the inner ring of the outer annular metal sleeve (81) has a first skirt (811) extending inwardly and obliquely toward the side where the inner annular metal sleeve (82) is located, the outer ring of the inner annular metal sleeve (82) has a second skirt (821) extending outwardly and obliquely toward the side where the outer annular metal sleeve (81) is located, there is a gap between the inner wall of the first skirt (811) and the outer wall of the second skirt (821), the two can rotate relative to each other without contact, the first The skirt (811) is arranged on the outside of the second skirt (821), and the two are parallel. The two ends of the pin shaft (4) are provided with threaded connectors (42). The outer walls of the two ends of the pin shaft (4) are symmetrically provided with first flattened portions (43). The inner hole of the outer link plate (2) is pressed into the first flattened portions (43) at the two ends of the pin shaft (4), and the outer link plate (2) is fixed to the two ends of the pin shaft (4) by nuts (421) and washers (422). The nuts (421) and washers (422) are installed on the threaded connector (42). The oil injection channel (41) includes an oil inlet channel arranged along its axial direction and an oil outlet channel arranged along its radial direction. One end of the oil inlet channel is provided with a threaded connector at the end surface of the threaded connector (42). An inlet is provided at one end of the oil outlet passage, and the other end is connected to the middle of the oil outlet passage. The two ends of the oil outlet passage are symmetrically provided with first oil outlets (44) on the outer wall of the pin shaft (4). The inner wall of the inner ring of the roller (5) is provided with an annular oil storage groove (52). The position of the oil storage groove (52) corresponds to the position of the second oil outlet (32). The outer walls of the two ends of the sleeve (3) are symmetrically provided with second flattened portions (31). The inner hole of the inner link plate (1) is pressed into the second flattened portions (31) at the two ends of the sleeve (3). The intermediate ball sleeve (6) further includes a sleeve with a hole (62). The outer circumference of the sleeve with a hole (62) is evenly provided with a plurality of small holes. The ball (61) is embedded in the small hole of the sleeve with a hole (62) and can roll freely.

2. A rolling dust-proof chain with balls as claimed in claim 1, characterized in that: The inlet is provided with an internal thread, and the oil cup (7) is threadedly connected and fixed to the inlet.

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