Roller structure and transport device

Abstract

The utility model relates to tobacco transportation technical field provides a kind of roller structure and transport device, the axial both ends of rotating shaft are respectively installed at least one bearing, rotating shaft is inserted in the inner ring of bearing;Supporting assembly is provided with two groups, respectively installed in the axial both ends of rotating shaft, supporting assembly includes support seat, nut and oil nozzle, support seat includes first connecting part and second connecting part, first connecting part is fixed with second connecting part, first connecting part is equipped with outer thread, at least two nuts are threadedly connected in each first connecting part, second connecting part is sleeved in bearing outer and is fixed with the outer ring of bearing, oil cavity is formed in second connecting part, oil nozzle is installed in the side wall of second connecting part, oil can enter oil cavity and enter the inner ring and outer ring between bearing by oil nozzle.Such, can add lubricating oil lubrication for bearing under the working condition of not disassembling bearing, to improve the service life of roller structure.

Description

Technical Field

[0001] This utility model relates to the field of tobacco transportation technology, and in particular to a roller structure and transportation device. Background Technology

[0002] The leaf re-drying process generates a lot of dust. The idler rollers typically use bearings as transmission components. These bearings, installed on the rollers, cannot be lubricated. After a period of use, the bearings become damaged and seize due to lack of lubrication, causing the idler roller to stop rotating and resulting in abnormal wear on the roller cylinder. When maintenance personnel replace or maintain the idler rollers, the process is time-consuming and labor-intensive, as these rollers are all made of steel and are quite heavy. There is also a risk of injury, such as someone being crushed. These pose certain safety hazards.

[0003] Therefore, there is an urgent need for a roller structure and a transport device to solve the above-mentioned technical problems. Utility Model Content

[0004] The purpose of this invention is to provide a roller structure and a conveying device that can add lubricating oil to the bearing without disassembling it, thereby improving the service life of the roller structure.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] The idler roller structure includes:

[0007] Shaft;

[0008] The bearings are installed at both ends of the shaft, and the shaft is inserted into the inner ring of the bearings.

[0009] The support assembly comprises two sets, respectively installed at both axial ends of the aforementioned rotating shaft. The support assembly includes a support base, a nut, and an oil nozzle. The support base includes a first connecting part and a second connecting part. The first connecting part is fixed to the second connecting part. The first connecting part is provided with an external thread. Each first connecting part is threaded with at least two nuts. The second connecting part is sleeved on the outside of the bearing and fixed to the outer ring of the bearing. An oil cavity is formed inside the second connecting part. The oil nozzle is installed on the side wall of the second connecting part. Oil can enter the oil cavity through the oil nozzle and enter between the inner and outer rings of the bearing.

[0010] As a preferred technical solution of the above-mentioned idler roller structure, the second connecting part is provided with a double-stage blind hole, the double-stage blind hole includes a first large diameter section and a first small diameter section, the bearing is inserted in the first large diameter section, and one side end face of the outer ring of the bearing abuts against the shoulder of the double-stage blind hole, the side wall of the first small diameter section is provided with a through hole, and the oil nozzle is installed in the through hole.

[0011] As a preferred embodiment of the above-mentioned idler roller structure, the rotating shaft includes a hollow part and a solid part, the solid part and the hollow part are fixed along the axial direction of the rotating shaft, the hollow part is located between the two solid parts, and the solid part is used to install the bearing.

[0012] As a preferred technical solution of the above-mentioned idler roller structure, the solid part is a stepped shaft structure, including a second large diameter section and a second small diameter section. The second large diameter section is fixedly connected to the hollow part. The second small diameter section is inserted into the inner ring of the bearing. The second small diameter section has an annular groove. A retaining ring is inserted into the annular groove. The bearing is sandwiched between the retaining ring and the second large diameter section.

[0013] As a preferred technical solution for the above-mentioned idler roller structure, the bearing is a deep groove ball bearing.

[0014] As a preferred embodiment of the above-mentioned idler structure, it further includes a roller ring, which is sleeved on the rotating shaft and detachably connected to the rotating shaft. The roller ring is located between the two sets of the above-mentioned support components and is used to support the conveyor belt.

[0015] As a preferred embodiment of the above-mentioned idler roller structure, it also includes a stop screw, which is inserted into the roller ring and threadedly connected to the shaft.

[0016] As a preferred technical solution of the above-mentioned idler roller structure, the above-mentioned rotating shaft has n mounting positions along the axial direction, and the above-mentioned rolling rings are provided with m, satisfying that n>m>1, and the above-mentioned rolling rings can be installed in one of the above-mentioned mounting positions.

[0017] As a preferred technical solution for the above-mentioned idler roller structure, the roller ring is made of nylon.

[0018] A transport device is also provided, comprising: a frame, a drive roller, a transport belt, and the aforementioned idler structure, wherein the drive roller and the aforementioned idler structure are both mounted on the frame, the transport belt is mounted on the drive roller and the aforementioned idler structure, and the drive roller is used to drive the transport belt to move.

[0019] The beneficial effects of this utility model are:

[0020] This utility model provides a roller structure, including a rotating shaft, bearings, and a support assembly. At least one bearing is installed at each of the axial ends of the rotating shaft, and the rotating shaft is inserted into the inner ring of the bearing. Two sets of support assemblies are provided, respectively installed at the axial ends of the rotating shaft. Each support assembly includes a support seat, a nut, and an oil nozzle. The support seat includes a first connecting part and a second connecting part, which are fixed to each other. The first connecting part has external threads, and each first connecting part is threaded with at least two nuts. The second connecting part is sleeved on the outside of the bearing and fixed to the outer ring of the bearing. An oil cavity is formed within the second connecting part, and an oil nozzle is installed on the side wall of the second connecting part, allowing oil to enter the oil cavity through the oil nozzle and flow between the inner and outer rings of the bearing.

[0021] For example, the shaft is a straight shaft structure used to support the conveyor belt at the bottom. The support assembly connects the shaft to the frame. The support seat in the support assembly is rotatably connected to the shaft via a bearing. The bearing includes an inner ring, an outer ring, and rolling elements. The outer ring is fitted over the inner ring. The outer ring and / or the inner ring form an annular groove around the axis. The rolling elements are installed in the groove. The rolling elements enable rolling connection between the inner and outer rings and between the support seat and the shaft, thereby reducing the coefficient of friction. After the second connecting part is assembled with the bearing, an oil cavity is formed. The user can output oil into the oil cavity through the grease nipple to lubricate the bearing. During this process, it is no longer necessary to remove the bearing from the shaft, which facilitates maintenance. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of this utility model and these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the idler roller structure provided in this embodiment of the utility model;

[0024] Figure 2 This is an exploded view of a portion of the idler roller structure provided in an embodiment of this utility model;

[0025] Figure 3 This is an enlarged view of the end of the rotating shaft provided in this embodiment of the utility model;

[0026] Figure 4 This is a schematic diagram of the structure of the support base provided in an embodiment of this utility model;

[0027] Figure 5 This is a cross-sectional view of the support base provided in an embodiment of this utility model.

[0028] In the picture:

[0029] 100. Rotating shaft; 110. Hollow section; 120. Solid section; 121. Second large diameter section; 122. Second small diameter section; 1221. Annular groove;

[0030] 200. Bearings;

[0031] 300, Support assembly; 310, Support base; 311, First connecting part; 312, Second connecting part; 3121, First large diameter section; 3122, First small diameter section; 3123, Shoulder; 320, Nut; 330, Oil nozzle;

[0032] 400, clasp;

[0033] 510, Roller ring; 520, Locking screw. Detailed Implementation

[0034] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0035] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0036] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0037] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0038] like Figures 1 to 5 As shown, this utility model provides a roller structure, including a rotating shaft 100, a bearing 200, and a support assembly 300. The rotating shaft 100 has at least one bearing 200 installed at each of its axial ends, and the rotating shaft 100 is inserted into the inner ring of the bearing 200. Two sets of support assemblies 300 are provided and installed at each of the axial ends of the rotating shaft 100. The support assembly 300 includes a support seat 310, a nut 320 and an oil nozzle 330. The support seat 310 includes a first connecting part 311 and a second connecting part 312. The first connecting part 311 is fixed to the second connecting part 312. The first connecting part 311 is provided with an external thread. Each first connecting part 311 is threaded with at least two nuts 320. The second connecting part 312 is sleeved on the outside of the bearing 200 and fixed to the outer ring of the bearing 200. An oil cavity is formed inside the second connecting part 312. The oil nozzle 330 is installed on the side wall of the second connecting part 312. Oil can enter the oil cavity through the oil nozzle 330 and enter between the inner and outer rings of the bearing 200.

[0039] For example, the rotating shaft 100 is a straight shaft structure used to support the conveyor belt at the bottom. The support assembly 300 is used to connect the rotating shaft 100 and the frame. The support seat 310 in the support assembly 300 is rotatably connected to the rotating shaft 100 through the bearing 200. The bearing 200 includes an inner ring, an outer ring, and rolling elements. The outer ring is fitted outside the inner ring. The outer ring and / or the inner ring form an annular groove around the axis. The rolling elements are installed in the groove. The rolling elements can realize the rolling connection between the inner ring and the outer ring, as well as between the support seat 310 and the rotating shaft 100, thereby reducing the coefficient of friction. After the second connecting part 312 is assembled with the bearing 200, an oil cavity is formed. The user can output oil into the oil cavity through the grease nipple 330 to lubricate the bearing 200. During this period, it is no longer necessary to remove the bearing 200 from the rotating shaft 100, which is convenient for maintenance.

[0040] Optionally, the second connecting part 312 is provided with a double-stage blind hole, which includes a first large-diameter section 3121 and a first small-diameter section 3122. The bearing 200 is inserted into the first large-diameter section 3121, and one side end face of the outer ring of the bearing 200 abuts against the shoulder 3123 of the double-stage blind hole. The side wall of the first small-diameter section 3122 is provided with a through hole, and the oil nozzle 330 is installed at the through hole.

[0041] For example, the second connecting portion 312 has a double-stage blind hole along the axial direction of the rotating shaft 100. The first large-diameter section 3121 and the first small-diameter section 3122 are connected along the axial direction of the rotating shaft 100. The connection between the first large-diameter section 3121 and the first small-diameter section 3122 forms a shoulder 3123 for the double-stage blind hole. The first large-diameter section 3121 is used to insert the bearing 200. The bearing 200 is coaxially arranged with the first large-diameter section 3121. The outer ring of the bearing 200 is connected to the first large-diameter section 3122. The inner wall of bearing 200 is press-fitted, and one side of the axial end face of the outer ring of bearing 200 abuts against shoulder 3123. Thus, the inner wall of the first minor diameter section 3122 and bearing 200 form a relatively closed chamber, namely the oil chamber. A through hole is provided on the side wall of the first minor diameter section 3122, and an oil nozzle 330 is installed at the through hole. The user can inject oil into the oil chamber through the oil nozzle 330, allowing the oil to enter between the inner and outer rings of bearing 200 to lubricate the rolling elements. With this configuration, during assembly, when bearing 200 abuts against the shoulder 3123 of the second connecting part 312, it is considered to be in place, ensuring sufficient space for the oil chamber.

[0042] Optionally, the axial length of the first minor diameter segment 3122 is 3 mm.

[0043] It should be noted that the shoulder 3123 does not obstruct the clearance between the inner and outer rings of the bearing 200.

[0044] It should be noted that the axial seal on one side of the bearing 200 located in the oil cavity is removed, allowing oil to enter and contact the rolling elements.

[0045] Optionally, the rotating shaft 100 includes a hollow portion 110 and a solid portion 120. The solid portion 120 and the hollow portion 110 are fixed along the axial direction of the rotating shaft 100. The hollow portion 110 is located between the two solid portions 120, and the solid portion 120 is used to install the bearing 200. In this way, by providing the hollow portion 110, the overall weight of the rotating shaft 100 can be reduced, while the solid portion 120 is used to install the bearing 200 and assemble with the support assembly 300, resulting in relatively increased structural strength and high reliability.

[0046] Furthermore, the hollow portion 110 and the solid portion 120 are detachably connected. This allows for the replacement of either the hollow portion 110 or the solid portion 120 of the appropriate length depending on the application scenario.

[0047] Optionally, the solid portion 120 has a stepped shaft structure, including a second large-diameter section 121 and a second small-diameter section 122. The second large-diameter section 121 is fixedly connected to the hollow portion 110. The second small-diameter section 122 is inserted into the inner ring of the bearing 200. The second small-diameter section 122 has an annular groove 1221, and a retaining ring 400 is inserted into the annular groove 1221. The bearing 200 is sandwiched between the retaining ring 400 and the second large-diameter section 121. Exemplarily, the second small-diameter section 122 and the second large-diameter section 121 are distributed along the axial direction of the rotating shaft 100. A shoulder is formed between the second small-diameter section 122 and the second large-diameter section 121. The second small-diameter section 122 is inserted into the inner ring of the bearing 200 and is interference-fitted with the inner ring. The bearing 200 is sandwiched between the retaining ring 400 and the shoulder.

[0048] In other embodiments, the solid portion 120 includes only the second minor diameter segment 122, and the second major diameter segment 121 is formed in the hollow portion 110.

[0049] Optionally, bearing 200 is a deep groove ball bearing. Utilizing the characteristics of deep groove ball bearings, the idler roller structure can withstand radial loads and a certain amount of bidirectional axial loads.

[0050] Optionally, the idler structure also includes a roller ring 510, which is sleeved on and detachably connected to the rotating shaft 100. The roller ring 510 is located between the two sets of support components 300 and is used to support the conveyor belt. With this configuration, the roller ring 510 contacts the conveyor belt. When the conveyor belt causes wear to the roller ring 510, it is only necessary to remove the roller ring 510 from the rotating shaft 100 and replace it with an unworn roller ring 510. It is not necessary to replace the rotating shaft 100 together, which can save material costs and reduce material waste.

[0051] Optionally, the idler roller structure also includes a stop screw 520, which is inserted into the roller ring 510 and threadedly connected to the rotating shaft 100.

[0052] For example, the locking screw 520 includes a threaded portion and a nut portion, the threaded portion and the nut portion are fixedly connected, the threaded portion is inserted into the side wall of the rolling ring 510 and then threadedly connected to the rotating shaft 100, and as it is screwed, the nut portion abuts the rolling ring 510 against the side wall of the rotating shaft 100.

[0053] Optionally, the rotating shaft 100 has n mounting positions along the axial direction, and the rolling ring 510 has m positions, satisfying that n > m > 1, so that the rolling ring 510 can be installed in one of the mounting positions.

[0054] With this configuration, the mounting position has a threaded hole, and the stop screw 520 is inserted into the threaded hole. The rolling ring 510 can be installed in an empty mounting position. According to the installation environment and operation requirements, the arrangement of multiple rolling rings 510 on the rotating shaft 100 can be adjusted to enhance versatility.

[0055] Optionally, the roller 510 can be made of nylon. This design gives the nylon roller 510 high toughness and strong moisture absorption.

[0056] The conveying device includes a frame, a drive roller, a conveyor belt, and an idler structure. The drive roller and the idler structure are both mounted on the frame, and the conveyor belt is mounted on the drive roller and the idler structure. The drive roller is used to drive the conveyor belt to move.

[0057] For example, the frame includes two parallel side frames extending along a first direction. The axial ends of the drive roller are rotatably connected to the two side frames respectively. The side frames are provided with U-shaped grooves. The first connecting part 311 of the idler roller structure is inserted into the U-shaped grooves. Two nuts 320 clamp the side frames axially on the rotating shaft 100. The conveyor belt is mounted on the drive roller and the idler roller structure. The drive roller can rotate actively. When the drive roller rotates, it can drive the conveyor belt to move along the first direction. The rotating shaft 100 of the idler roller structure supports the conveyor belt below and rotates as the conveyor belt moves.

[0058] The axis of the drive roller and the axis of the idler roller structure are both perpendicular to the first direction.

[0059] Furthermore, the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the protection scope of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention, the scope of which is determined by the scope of the appended claims.

Claims

1. A roller structure, characterized in that, include: Rotating shaft (100); Bearing (200), at least one bearing (200) is respectively installed at both axial ends of the rotating shaft (100), and the rotating shaft (100) is inserted into the inner ring of the bearing (200); Two sets of support components (300) are provided and are respectively installed at both ends of the axial direction of the rotating shaft (100). The support component (300) includes a support seat (310), a nut (320) and an oil nozzle (330). The support seat (310) includes a first connecting part (311) and a second connecting part (312). The first connecting part (311) is fixed to the second connecting part (312). The first connecting part (311) is provided with an external thread. Each first connecting part (311) is threadedly connected to at least two nuts (320). The second connecting part (312) is sleeved on the bearing (200) and fixed to the outer ring of the bearing (200). An oil cavity is formed in the second connecting part (312). The oil nozzle (330) is installed on the side wall of the second connecting part (312). Oil can enter the oil cavity through the oil nozzle (330) and enter between the inner and outer rings of the bearing (200).

2. The idler roller structure according to claim 1, characterized in that, The second connecting part (312) has a double-stage blind hole, which includes a first large-diameter section (3121) and a first small-diameter section (3122). The bearing (200) is inserted in the first large-diameter section (3121), and one side end face of the outer ring of the bearing (200) abuts against the shoulder (3123) of the double-stage blind hole. The side wall of the first small-diameter section (3122) has a through hole, and the oil nozzle (330) is installed at the through hole.

3. The idler roller structure according to claim 1, characterized in that, The rotating shaft (100) includes a hollow portion (110) and a solid portion (120). The solid portion (120) and the hollow portion (110) are fixed along the axial direction of the rotating shaft (100). The hollow portion (110) is located between the two solid portions (120). The solid portion (120) is used to mount the bearing (200).

4. The idler roller structure according to claim 3, characterized in that, The solid part (120) has a stepped shaft structure, including a second large diameter section (121) and a second small diameter section (122). The second large diameter section (121) is fixedly connected to the hollow part (110). The second small diameter section (122) is inserted into the inner ring of the bearing (200). The second small diameter section (122) has an annular groove (1221). A retaining ring (400) is inserted into the annular groove (1221). The bearing (200) is sandwiched between the retaining ring (400) and the second large diameter section (121).

5. The idler roller structure according to claim 1, characterized in that, The bearing (200) is a deep groove ball bearing.

6. The idler roller structure according to claim 1, characterized in that, It also includes a roller (510), which is sleeved on the rotating shaft (100) and detachably connected to the rotating shaft (100). The roller (510) is located between the two sets of the support components (300) and is used to support the conveyor belt.

7. The idler roller structure according to claim 6, characterized in that, It also includes a stop screw (520), which is inserted into the rolling ring (510) and threadedly connected to the rotating shaft (100).

8. The idler roller structure according to claim 6, characterized in that, The rotating shaft (100) has n mounting positions along the axial direction, and the rolling ring (510) has m positions, satisfying that n > m > 1, and the rolling ring (510) can be installed in one of the mounting positions.

9. The idler roller structure according to claim 6, characterized in that, The roller (510) is made of nylon.

10. A transport device, characterized in that, The device includes a frame, a drive roller, a conveyor belt, and a roller structure as described in any one of claims 1-9, wherein the drive roller and the roller structure are both mounted on the frame, the conveyor belt is mounted on the drive roller and the roller structure, and the drive roller is used to drive the conveyor belt to move.

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