Carrier roller and electronic scale

Abstract

The utility model belongs to the technology of tobacco primary processing equipment, and discloses a carrier roller and an electronic scale, the carrier roller comprises a support shaft and a hollow shaft sleeved on the support shaft through a bearing, and further comprises a bearing blocking piece, a sealing piece and a positioning piece. First step grooves are formed in the two ends of the hollow shaft, and the bearings are limited in the first step grooves through the bearing blocking pieces. The sealing piece is arranged on the outer side of the bearing blocking piece in the axial direction of the supporting shaft. The positioning piece is arranged on the outer side of the sealing piece in the axial direction of the supporting shaft and detachably connected with the supporting shaft. The sealing piece comprises a limiting part and a sealing part which are arranged at an included angle, the limiting part is located between the positioning piece and the bearing blocking piece, and the supporting shaft is sleeved with the sealing part. According to the carrier roller, the bearing is limited in the first step groove in the hollow shaft through the bearing blocking piece, the axial freedom degree of the bearing is limited, the sealing piece is limited between the positioning piece and the bearing blocking piece through the positioning piece, lubricating oil in the bearing is sealed around the bearing, dust is prevented from entering a working area of the bearing, and the service life of the carrier roller is prolonged. Good operation of the bearing is ensured.

Description

Idler rollers and electronic scales Technical Field

[0001] This utility model relates to the field of tobacco processing equipment technology, and in particular to a roller and an electronic scale. Background Technology

[0002] Electronic scales are important measuring tools for achieving quantitative blending and fine processing in tobacco processing workshops. The rollers of electronic scales are usually fixed by a support shaft that cooperates with the electronic scale bracket, while another hollow shaft moves together with the electronic scale conveyor belt to support the conveyor belt. The support shaft and the hollow shaft are connected by bearings.

[0003] However, during long-term operation, dust can easily accumulate at the bearing between the hollow shaft and the support shaft, leading to lubrication failure between the bearings. This can cause the idler roller to jam, greatly shortening the effective operating time of the idler roller and seriously affecting the service life of the bearing.

[0004] Therefore, there is an urgent need for a roller and an electronic scale to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide an idler roller and an electronic scale to solve the technical problems of short effective running time of idler rollers and short service life of bearings in the prior art.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] On one hand, a roller is provided, including a support shaft and a hollow shaft sleeved on the support shaft via bearings, and further comprising:

[0008] The bearing retainer has first stepped grooves at both ends of the hollow shaft, and the bearing retainer restricts the bearing within the first stepped grooves.

[0009] A sealing element is disposed on the outside of the bearing retainer along the axial direction of the support shaft;

[0010] A positioning element is disposed on the outside of the seal along the axial direction of the support shaft and is detachably connected to the support shaft;

[0011] The sealing element includes a limiting part and a sealing part arranged at an angle. The limiting part is located between the positioning element and the bearing stop, and the sealing part is sleeved on the support shaft.

[0012] Optionally, the hollow shaft is further provided with a second stepped groove, which is located outside the first stepped groove along the hollow shaft, and the bearing stop is located in the second stepped groove.

[0013] Optionally, the bearing stop is provided with a limiting groove, and the positioning member restricts the seal within the limiting groove.

[0014] Optionally, the contact surface between the sealing part and the support shaft is provided with a spring ring structure.

[0015] Optionally, the positioning element includes a first sleeve and a second sleeve, one end of the second sleeve is sleeved on the outside of the first sleeve, the first sleeve is detachably connected to the support shaft, and the end of the second sleeve away from the first sleeve is used to restrict the sealing element.

[0016] Optionally, one of the support shaft and the positioning member is provided with a fixing member, and the other is provided with a positioning hole, wherein the fixing member can selectively extend into or retract from the positioning hole.

[0017] Optionally, the support shaft includes a support section and a connecting section, the diameter of the support section is larger than the diameter of the connecting section, and the hollow shaft is correspondingly arranged with the support section.

[0018] Optionally, the connecting segments are disposed at both ends of the support shaft, and the connecting segments are provided with connecting planes along the axial direction.

[0019] Optionally, the hollow shaft is covered with a wear-resistant layer.

[0020] On the other hand, an electronic scale is provided, including a support base, a conveyor belt, and a plurality of the aforementioned idlers; the plurality of idlers are disposed on the support base, and the conveyor belt is sleeved on the plurality of idlers.

[0021] The beneficial effects of this utility model are:

[0022] The idler roller proposed in this utility model restricts the bearing within the first stepped groove on the hollow shaft by setting a bearing stop, thereby limiting the axial degree of freedom of the bearing, reducing the axial force borne by the bearing, and improving the bearing life. By setting a sealing element between the positioning element and the bearing stop, the lubricating oil and other substances inside the bearing can be sealed around the bearing, preventing dust and other substances from entering the working area of ​​the bearing and ensuring good bearing operation.

[0023] The electronic scale proposed in this utility model can prevent dust from entering the working area of ​​the bearing inside the idler roller, ensuring that the idler roller will not jam due to long-term use, and enabling the idler roller to operate effectively for a long time. Attached Figure Description

[0024] 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.

[0025] Figure 1 is a partial cross-sectional view of the idler roller provided by this utility model;

[0026] Figure 2 is an enlarged view of point A in Figure 1.

[0027] In the picture:

[0028] 1. Support shaft; 11. Support section; 12. Connecting section;

[0029] 2. Bearing; 3. Hollow shaft; 4. Bearing retainer;

[0030] 5. Sealing element; 51. Limiting part; 52. Sealing part;

[0031] 6. Positioning component; 61. First sleeve; 62. Second sleeve;

[0032] 71. Fastener; 72. Positioning hole. Detailed Implementation

[0033] To make the technical problem solved by this utility model, the technical solution adopted, and the technical effect achieved clearer, the technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely for explaining this utility model and not for limiting it. Furthermore, it should be noted that, for ease of description, only the parts related to this utility model are shown in the accompanying drawings, not all of them.

[0034] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and for simplifying the description, 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. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Specifically, the terms "first position" and "second position" refer to two different positions.

[0035] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections or detachable connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections 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] This utility model discloses an electronic scale, including a support base, a conveyor belt, and multiple idlers. The multiple idlers are mounted on the support base, and the conveyor belt is sleeved on the multiple idlers.

[0037] As shown in Figures 1 and 2, the idler roller includes a support shaft 1 and a hollow shaft 3 sleeved on the support shaft 1 via a bearing 2. It also includes a bearing stop 4, a seal 5, and a positioning element 6. Both ends of the hollow shaft 3 have first stepped grooves, and the bearing stop 4 restricts the bearing 2 within these grooves. The seal 5 is positioned axially along the support shaft 1 on the outside of the bearing stop 4.

[0038] The positioning element 6 is disposed on the outside of the seal 5 along the axial direction of the support shaft 1 and is detachably connected to the support shaft 1.

[0039] The sealing element 5 includes a limiting part 51 and a sealing part 52 arranged at an angle. The limiting part 51 is located between the positioning element 6 and the bearing stop 4, and the sealing part 52 is sleeved on the support rod.

[0040] It is understandable that the idler roller, by opening a first stepped groove (not shown in the figure) on the hollow shaft 3 and restricting the bearing 2 within the first stepped groove by the bearing stop 4, restricts the axial degree of freedom of the bearing 2 by the bearing stop 4 and the first stepped groove, reducing the axial force borne by the bearing 2 and improving the bearing 2's lifespan. The positioning member 6 sets the limiting part 51 of the seal 5 between the positioning member 6 and the bearing stop 4, so that the seal 5 will not move axially, ensuring that the sealing part 52 of the seal 5 can maintain a good seal with the support shaft 1, sealing the lubricating oil in the bearing 2 around the bearing 2, preventing dust and other objects from entering the working area of ​​the bearing 2, ensuring the bearing 2 operates well, and improving the bearing 2's service life.

[0041] Specifically, as shown in Figure 2, in this embodiment, the sealing portion 52 of the seal 5 is offset away from the bearing 2 along the axial direction of the support shaft 1. It is understood that this arrangement facilitates the installation of the seal 5 while ensuring that the sealing portion 52 of the seal 5 maintains a good seal with the support shaft 1 after installation.

[0042] Furthermore, as shown in Figure 2, a second stepped groove (not shown in the figure) is also provided on the hollow shaft 3. The second stepped groove is located outside the first stepped groove along the hollow shaft 3, and the bearing stop 4 is located in the second stepped groove. This arrangement makes it easier to install and position the bearing stop 4. Specifically, in this embodiment, the outer ring of the bearing stop 4 is in transition fit with the second stepped groove of the hollow shaft 3, and the inner ring of the bearing stop 4 is in clearance fit with the support shaft 1. This arrangement can achieve higher centering accuracy and stability, and is also convenient for assembly.

[0043] Furthermore, referring to Figure 2, to prevent the seal 5 from disengaging from the positioning member 6 and the bearing stop 4 during the rotation of the hollow shaft 3, a limiting groove (not shown in the figure) is provided on the bearing stop 4. The positioning member 6 confines the seal 5 within the limiting groove. It can be understood that by pressing the sealing part 52 of the seal 5 into the limiting groove of the bearing stop 4 through the positioning member 6, the limiting part 51 of the seal 5 can be prevented from disengaging from the positioning member 6 and the bearing stop 4 due to deformation, which would cause the sealing part 52 of the seal 5 to separate from the support shaft 1, resulting in seal failure.

[0044] As shown in Figure 2, in this embodiment, the limiting groove on the positioning member 6 extends radially to the inner ring of the positioning member 6. This arrangement provides space for the deformation of the seal 5, guides the elastic deformation direction of the seal 5, and further prevents the seal 5 from coming off between the positioning member 6 and the bearing stop 4.

[0045] Furthermore, in this embodiment, the connection between the limiting part 51 and the sealing part 52 is an arc surface. It can be understood that this arrangement allows the sealing member 5 to better adapt to axial movement, reducing the possibility of seal failure through flexible deformation.

[0046] Furthermore, in some embodiments, to ensure the sealing effect between the seal 5 and the support shaft 1, a spring ring structure is provided on the contact surface between the sealing part 52 and the support shaft 1. It is understood that the portion of the sealing part 52 that contacts the support shaft 1 is provided with a spring-shaped structure extending axially along the support shaft 1. This arrangement increases the contact area between the sealing part 52 and the support shaft 1, reducing the risk of seal failure.

[0047] Furthermore, in some embodiments, the positioning member 6 includes a first sleeve 61 and a second sleeve 62, one end of the second sleeve 62 is sleeved on the outside of the first sleeve 61, the first sleeve 61 is detachably connected to the support shaft 1, and the end of the second sleeve 62 away from the first sleeve 61 is used to restrict the sealing member 5.

[0048] Specifically, as shown in Figure 2, in this embodiment, the first sleeve 61 and the second sleeve 62 are integrally formed. The end of the second sleeve 62 away from the first sleeve 61 presses the limiting part 51 of the elastic element into the limiting groove of the bearing stop 4. The sealing part 52 of the sealing element 5 is located between the second sleeve 62 and the support shaft 1. It can be understood that by setting the first sleeve 61 and the second sleeve 62, with one end of the second sleeve 62 fitted onto the outside of the first sleeve 61, while reserving space for the sealing part 52 of the sealing element 5 between the second sleeve 62 and the support shaft 1, the second sleeve 62 further prevents dust and other contaminants from entering the working space of the bearing 2 to a certain extent.

[0049] Furthermore, in some embodiments, one of the support shaft 1 and the positioning member 6 is provided with a fixing member 71, and the other is provided with a positioning hole 72, wherein the fixing member 71 can selectively extend into or out of the positioning hole 72.

[0050] Specifically, in this embodiment, the support shaft 1 is provided with a positioning hole 72 in the radial direction, and the positioning member 6 is provided with a fixing member 71, which is a fastening bolt.

[0051] Of course, in other embodiments, the fixing member 71 can also be set on the support shaft 1. The fixing member 71 is a guide post that can be elastically extended and retracted. The positioning member 6 has a positioning hole 72. After pressing the guide post, the positioning member 6 can be sleeved on the support shaft 1. When it is necessary to remove the positioning member 6, press the guide post first, and then remove the positioning member 6.

[0052] Further, as shown in Figures 1 and 2, in this embodiment, the support shaft 1 includes a support section 11 and a connecting section 12. The diameter of the support section 11 is larger than the diameter of the connecting section 12, and the hollow shaft 3 is correspondingly arranged with the support section 11. It can be understood that the larger diameter of the support section 11 ensures that the structural strength of the support section 11 is greater than that of the connecting section 12, providing better support for the bearing 2 and the hollow shaft 3, and ensuring the stability of the idler roller during operation.

[0053] Furthermore, in this embodiment, the connection between the support section 11 and the connecting section 12 is smoothly transitioned. This design can reduce the collision between the bearing 2 and the support section 11 of the support shaft 1 during installation, thereby ensuring the life of the bearing 2 and facilitating the disassembly and assembly of the bearing 2.

[0054] Furthermore, in some embodiments, connecting segments 12 are disposed at both ends of the support shaft 1, and connecting segments 12 are provided with connecting planes along the axial direction. It is understood that by providing connecting planes in connecting segments 12, the idler roller can easily cooperate with the support base on the electronic scale when used in the electronic scale, thereby improving the assembly efficiency of the electronic scale.

[0055] Furthermore, in some embodiments, in order to ensure that the hollow shaft 3 that works with the conveyor belt can still be used normally after a long period of operation, the outer surface of the hollow shaft 3 is covered with a wear-resistant layer.

[0056] Specifically, in this embodiment, the outer surface of the hollow shaft 3 is provided with a chrome plating layer, which significantly enhances the wear resistance of the idler roller and extends its service life in high-friction scenarios.

[0057] The above embodiments merely illustrate the basic principles and characteristics of this utility model. This utility model is not limited to the above embodiments. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A roller comprising a support shaft (1) and a hollow shaft (3) sleeved on the support shaft (1) via a bearing (2), characterized in that, Also includes: The bearing retainer (4) has first stepped grooves at both ends of the hollow shaft (3), and the bearing retainer (4) restricts the bearing (2) within the first stepped grooves; the seal (5) is arranged on the outside of the bearing retainer (4) along the axial direction of the support shaft (1); the positioning member (6) is arranged on the outside of the seal (5) along the axial direction of the support shaft (1) and is detachably connected to the support shaft (1); the seal (5) includes a limiting part (51) and a sealing part (52) arranged at an angle, the limiting part (51) is located between the positioning member (6) and the bearing retainer (4), and the sealing part (52) is sleeved on the support shaft (1).

2. The idler roller according to claim 1, characterized in that, The hollow shaft (3) is also provided with a second step groove, which is located outside the first step groove along the hollow shaft (3), and the bearing stop (4) is located in the second step groove.

3. The idler roller according to claim 1, characterized in that, The bearing stop (4) is provided with a limiting groove, and the positioning member (6) restricts the sealing member (5) within the limiting groove.

4. The idler roller according to claim 1, characterized in that, The contact surface between the sealing part (52) and the support shaft (1) is provided with a spring ring structure.

5. The idler roller according to claim 1, characterized in that, The positioning element (6) includes a first sleeve (61) and a second sleeve (62). One end of the second sleeve (62) is sleeved on the outside of the first sleeve (61). The first sleeve (61) is detachably connected to the support shaft (1). The end of the second sleeve (62) away from the first sleeve (61) is used to restrict the sealing element (5).

6. The idler roller according to claim 1, characterized in that, One of the support shaft (1) and the positioning member (6) is provided with a fixing member (71), and the other is provided with a positioning hole (72). The fixing member (71) can be selectively inserted into or removed from the positioning hole (72).

7. The idler roller according to claim 1, characterized in that, The support shaft (1) includes a support section (11) and a connecting section. The diameter of the support section (11) is larger than the diameter of the connecting section. The hollow shaft (3) is correspondingly arranged with the support section (11).

8. The idler roller according to claim 7, characterized in that, The connecting segments are disposed at both ends of the support shaft (1), and the connecting segments are provided with connecting planes along the axial direction.

9. The idler roller according to any one of claims 1-8, characterized in that, The hollow shaft (3) is covered with a wear-resistant layer.

10. An electronic scale, characterized in that, It includes a support base, a conveyor belt, and a plurality of idlers as described in any one of claims 1-9; the plurality of idlers are disposed on the support base, and the conveyor belt is sleeved on the plurality of idlers.

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