Transmission supporting structure

Abstract

The utility model discloses a transmission supporting structure which comprises an outer ring body, a center rotating column, a pin roller and a sealing cover. The center rotating column and the outer ring body are concentrically arranged, and the height of the center rotating column is larger than or equal to that of the outer ring body. The plurality of rollers are arranged around the outer peripheral wall of the central rotating column and are in contact with the inner ring wall of the outer ring body; the two sealing covers are arranged at the two ends of the center rotating column respectively. The outer ring body is arranged to be in contact with the chain wheel, the outer ring body transmits the bearing force to the pin roller after dispersing the bearing force, the contact area between the outer ring body and the pin roller is increased in cooperation with the arrangement that the height of the outer ring body and the height of the pin roller are larger than the thickness of the chain wheel, and therefore the bearing force borne by the pin roller in the unit area is further reduced; the maximum bearing capacity of the pin rollers is increased, the service life of the pin rollers is prolonged, and then the service life of the transmission supporting structure is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of saw chains, in particular to a transmission support structure. Background Art

[0002] The transmission support structure generally refers to the structure used to support the transmission components in mechanical equipment and ensure stable and reliable power transmission. In the saw chain, the transmission structure is the central shaft at the driven end and the rollers arranged around the central shaft. This transmission structure has the following problems:

[0003] Existing technologies such as Figure 13 As shown, the length of roller a is limited by the width of the saw chain guide groove c on the saw chain guide bar b and cannot be larger than the width of the saw chain guide groove. However, in actual use, the roller often experiences excessive load, which accelerates roller wear, reduces roller service life, and ultimately reduces the service life of the entire transmission support structure. The sprocket and guide bar in a saw chain are typically sold separately, and the sprockets have uniform specifications and dimensions. Therefore, it is necessary to improve the transmission support structure separately, providing a transmission support structure that can increase the roller's load capacity and extend its service life while still being compatible with existing sprockets. Utility Model Content

[0004] The purpose of the utility model is to provide a transmission support structure to solve the problem in the background technology that the existing roller bearing capacity is insufficient, resulting in a short service life of the transmission support structure.

[0005] In order to achieve the above-mentioned purpose, the utility model proposes a transmission support structure, including an outer ring body, a central rotating column, rollers and a cover; the central rotating column is concentrically arranged with the outer ring body, and the height of the central rotating column is greater than or equal to the height of the outer ring body; multiple rollers are arranged around the outer peripheral wall of the central rotating column and in contact with the inner ring wall of the outer ring body; the two covers are respectively arranged on the two ends of the central rotating column.

[0006] Optionally, the heights of the outer ring, the central rotating column, and the roller are all greater than the thickness of the sprocket.

[0007] Optionally, the height of the outer ring is equal to or greater than the height of the roller.

[0008] Optionally, grooves corresponding to the sealing cover are provided on the top and bottom surfaces of the outer ring body having a height greater than that of the roller, and the orthographic projection of the groove on the bottom surface of the outer ring body is a circle.

[0009] Optionally, after the cover is fitted with the bottom of the groove, the plane of the cover does not protrude from the top and bottom surfaces of the central rotating column, and the width of the groove is greater than or equal to the diameter of the cover.

[0010] Optionally, the outer ring body is provided with a first oil inlet hole.

[0011] Optionally, the outer ring body is provided with an oil outlet hole at both ends.

[0012] Optionally, the central rotating column is provided with an oil storage groove at the center position, and the central rotating column is further provided with a through hole in communication with the oil storage groove.

[0013] Optionally, the oil storage groove is provided with a dustproof cover, the dustproof cover is provided with a second oil inlet hole, and the side surface of the dustproof cover is sleeved with a first sealing ring.

[0014] Optionally, the top surface of the central rotating column is provided with a second sealing ring.

[0015] Optionally, the cover is provided with a heat dissipation hole.

[0016] Optionally, the maximum distance between the two covers is less than the height of the central rotating column.

[0017] Compared with the prior art, the transmission support structure has the following beneficial effects:

[0018] The transmission support structure is in contact with the chain wheel through the setting of the outer ring body, and the bearing force on the chain wheel is first transmitted to the outer ring body, and then the bearing force is transmitted to the roller by the outer ring body. The outer ring body transmits the bearing force to the roller after dispersing the bearing force, and the setting of the outer ring body and the roller height greater than the thickness of the chain wheel increases the contact area between the outer ring body and the roller. Therefore, the maximum bearing force on the unit area of the roller is further reduced, the maximum bearing force of the roller is increased, the service life of the roller is prolonged, and the service life of the transmission support structure is prolonged. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is the overall structure schematic diagram of the utility model.

[0020] Figure 2 It is the overall structure sectional view of the utility model.

[0021] Figure 3 It is the structure schematic diagram of the utility model after removing the cover.

[0022] Figure 4 It is the structure schematic diagram of the cover of the utility model.

[0023] Figure 5 It is the overall structure schematic diagram of the embodiment 2 of the utility model.

[0024] Figure 6 It is the overall structure sectional view in the embodiment 2 of the utility model.

[0025] Figure 7 is the overall structure of the embodiment 3 of the utility model section view.

[0026] Figure 8 is the utility model Figure 7 A place in the embodiment 3 of the utility model local enlarged view.

[0027] Figure 9 is the overall structure of the embodiment 4 of the utility model schematic diagram.

[0028] Figure 10 is the overall structure of the embodiment 5 of the utility model schematic diagram.

[0029] Figure 11 is the structure of the outer ring body of the embodiment 5 of the utility model schematic diagram.

[0030] Figure 12 is the overall structure of the embodiment 6 of the utility model schematic diagram.

[0031] Figure 13 is the prior art schematic diagram of the utility model.

[0032] In the figure, mark: 1, outer ring body;11, recess;12, first oil hole;13, oil hole;2, center rotating column;21, oil storage groove;22, through hole;23, dust cover;24, second oil hole;25, first sealing ring;26, second sealing ring;3, roller;4, cover;41, heat dissipation hole. DETAILED DESCRIPTION

[0033] The following detailed description is made in conjunction with the accompanying drawings and specific implementation. In the following description, a lot of specific details are set forth in order to fully understand the utility. But the utility can be implemented in many other ways different from the description, and those skilled in the art can make similar generalization without departing from the utility, so the utility is not limited by the specific embodiments disclosed below.

[0034] The transmission support structure of the application can be suitable for saw chain transmission and other occasions, of course, can also be used for other similar application scenarios, the following detailed description of a kind of transmission support structure.

[0035] Embodiment 1

[0036] Refer to the attached Figure 1 — Figure 4As shown in the figure, the structure schematic diagram of the preferred embodiment of the transmission support structure of the application is shown.

[0037] The present application has the advantages that the chain wheel and the rolling element are separated by the outer ring body 1, the load on the chain wheel is first applied to the outer ring body 1, the height of the outer ring body 1 is greater than the thickness of the chain wheel, the outer ring body 1 can absorb and disperse the load on the chain wheel, and then the load is transmitted to the roller 3, the load per unit area on the roller 3 is reduced, the service life of the roller is prolonged, the service life of the transmission support structure is prolonged, the rotation of the chain wheel rubs the outer wall of the outer ring body 1, the inner wall of the outer ring body 1 contacts the roller 3, so the wear caused by the rotation of the chain wheel does not affect the roller 3, and when the chain wheel is suddenly damaged, the outer ring body 1 can limit the roller 3 to prevent the roller 3 from flying out, and the safety of the transmission support structure is improved.

[0038] Referring to Fig. 1 and Figure 2 As shown in the figure, in the present application, the outer ring body 1 is provided with a first oil inlet hole 12.

[0039] The first oil inlet hole 12 is provided, so that the external lubricating oil can smoothly enter into contact with the roller 3, so that the roller 3 contacts the lubricating oil when rolling, the friction when the roller 3 rotates is reduced, the wear speed of the roller 3 is slowed down, the roller 3 is protected, the service life of the roller 3 is prolonged, and the service life of the transmission support structure is prolonged.

[0040] Referring to Fig. 1 and Figure 1 — Figure 3 As shown in the figure, in the present application, the outer ring body 1 is provided with a first oil inlet hole 12.

[0041] The present application has the advantages that the chain wheel and the rolling element are separated by the outer ring body 1, the load on the chain wheel is first applied to the outer ring body 1, the height of the outer ring body 1 is greater than the thickness of the chain wheel, the outer ring body 1 can absorb and disperse the load on the chain wheel, and then the load is transmitted to the roller 3, the load per unit area on the roller 3 is reduced, the service life of the roller is prolonged, the service life of the transmission support structure is prolonged, the rotation of the chain wheel rubs the outer wall of the outer ring body 1, the inner wall of the outer ring body 1 contacts the roller 3, so the wear caused by the rotation of the chain wheel does not affect the roller 3, and when the chain wheel is suddenly damaged, the outer ring body 1 can limit the roller 3 to prevent the roller 3 from flying out, and the safety of the transmission support structure is improved.

[0042] Embodiment 2

[0043] Referring to Figs. 1-3 Figure 5 and Figure 6 As shown in Figs. 1-3, the difference between the present embodiment and the above embodiments is that, in the present embodiment, an oil storage groove 21 is arranged at the center position of the central rotating column 2, and a through hole 22 is further arranged on the central rotating column 2, which is in communication with the oil storage groove 21.

[0044] In the present embodiment, the oil storage groove 21 is arranged on the central rotating column 2, because the thickness of the chain wheel is equal to the width of the guide plate groove, which occupies the middle part of the outer ring body 1, and the remaining protruding part of the outer ring body 1 is not provided with a hole with a large enough diameter for oil inlet, so when it is necessary to increase the oil inlet amount, a larger diameter hole needs to be arranged. Therefore, the oil storage groove 21 is arranged on the central rotating column 2 to increase the flow amount and flow speed of the lubricating oil. The through hole 22 is arranged to ensure that the lubricating oil can flow out of the oil storage groove 21 through the through hole 22 and contact the roller 3 to lubricate the roller 3.

[0045] Embodiment 3

[0046] Referring to Figs. 1-3 Figure 7 and Figure 8 As shown in Figs. 1-3, the difference between the present embodiment and the above embodiments is that, in the present embodiment, an oil storage groove 21 is arranged at the center position of the central rotating column 2, and a through hole 22 is further arranged on the central rotating column 2, which is in communication with the oil storage groove 21.

[0047] In the present embodiment, the oil storage groove 21 is arranged on the central rotating column 2, because the thickness of the chain wheel is equal to the width of the guide plate groove, which occupies the middle part of the outer ring body 1, and the remaining protruding part of the outer ring body 1 is not provided with a hole with a large enough diameter for oil inlet, so when it is necessary to increase the oil inlet amount, a larger diameter hole needs to be arranged. Therefore, the oil storage groove 21 is arranged on the central rotating column 2 to increase the flow amount and flow speed of the lubricating oil. The through hole 22 is arranged to ensure that the lubricating oil can flow out of the oil storage groove 21 through the through hole 22 and contact the roller 3 to lubricate the roller 3.

[0048] Embodiment 4

[0049] Referring to Figs. 1-3 Figure 9 As shown in Figs. 1-3, the difference between the present embodiment and the above embodiments is that, in the present embodiment, a second sealing ring 26 is arranged on the top surface of the central rotating column 2.

[0050] The second sealing ring 26 can further enhance the dustproof effect, or the use of the dust cover 23 can be eliminated to reduce costs.

[0051] Embodiment 5

[0052] Referring to Figs. 1-3 Figure 10 and Figure 11 As shown in Figs. 1-3, the difference between the present embodiment and the above embodiments is that, in the present embodiment, the height of the outer ring body 1 is greater than the height of the roller 3, and the top and bottom surfaces of the outer ring body 1 are provided with a groove 11 corresponding to the cover 4, and the orthographic projection of the groove 11 on the bottom surface of the outer ring body 1 is circular.

[0053] The utility model avoids the cover 4 by setting the groove 11, so that the cover 4 will not interfere with the outer ring body 1, ensuring that the cover 4 is flush with the top and bottom surfaces of the central rotating column 2. At the same time, the outer ring body 1 can be limited to prevent it from falling off at will during the process of taking and using, thereby facilitating the installation of the transmission support structure.

[0054] See attached Figure 10 and Figure 11 As shown, in the present invention, after the cover 4 is fitted with the bottom of the groove 11 , the plane of the cover 4 will not protrude from the top and bottom surfaces of the central rotating column 2 , and the width of the groove 11 is greater than or equal to the diameter of the cover 4 .

[0055] The present invention limits the thickness of the cover 4 and the depth of the groove 11 to ensure that the cover 4 is located in the groove 11 after installation, and the cover 4 does not protrude from the top and bottom surfaces of the central rotating column 2, ensuring normal installation and use.

[0056] Example 6

[0057] See attached Figure 12 The difference between the embodiment shown and the above embodiment is that, in the embodiment, heat dissipation holes 41 are provided on the cover 4 , and the maximum distance between the two covers 4 is smaller than the height of the central rotating column 2 .

[0058] In this embodiment, the heat dissipation holes 41 are provided, and two maximum distances of the cover 4 are limited, and the height of the outer ring body 1 is smaller than the central rotating column 2, so that there is space on the top surface of the cover 4. When the outer ring body 1 or the central rotating column 2 rotates, the wind force generated can take away the heat of the roller 3 during rotation through the heat dissipation holes 41, reducing and avoiding thermal deformation of the roller due to high temperature, thereby protecting the roller 3.

[0059] The above embodiments are intended to illustrate the present application, not to limit the present application. Any solution that is a simple transformation of the present application falls within the scope of protection of the present application.

Claims

1. A drive support structure characterized by, It comprises an outer ring body (1), a center rotating column (2), a roller (3) and a cover (4); The center rotating column (2) is arranged concentrically with the outer ring body (1), and the height of the center rotating column (2) is greater than or equal to the height of the outer ring body (1); A plurality of the rollers (3) are arranged around the outer circumferential wall of the center rotating column (2) and are in contact with the inner annular wall of the outer ring body (1); Two covers (4) are arranged on the two ends of the center rotating column (2) respectively; The height of the outer ring body (1), the center rotating column (2) and the roller (3) is greater than the thickness of the chain wheel.

2. The drive support structure according to claim 1, characterized by, The height of the outer ring body (1) is equal to or greater than the height of the roller (3).

3. The drive support structure of claim 2, wherein, After the cover (4) is attached to the bottom of the groove (11), the plane of the cover (4) will not protrude from the top surface and the bottom surface of the center rotating column (2), and the groove width of the groove (11) is greater than or equal to the diameter of the cover (4). The top surface and the bottom surface of the outer ring body (1) with a height greater than the roller (3) are provided with a groove (11) corresponding to the cover (4), and the orthographic projection of the groove (11) on the bottom surface of the outer ring body (1) is circular.

4. The drive support structure of claim 1, wherein The outer ring body (1) is provided with a first oil inlet hole (12).

5. The transmission support structure according to claim 1 or 4, characterized by Oil outlet holes (13) are arranged at equal angles on the two ends of the outer ring body (1).

6. The drive support structure of claim 1, wherein The center rotating column (2) is provided with an oil storage groove (21) at the center position, and is further provided with a through hole (22) which is in communication with the oil storage groove (21).

7. The drive support structure of claim 6, wherein The oil storage groove (21) is provided with a dust cover (23) at the slot opening, the dust cover (23) is provided with a second oil inlet hole (24), and the side surface of the dust cover (23) is sleeved with a first sealing ring (25).

8. The drive support structure of claim 6, wherein, The top surface of the center rotating column (2) is provided with a second sealing ring (26).

9. The transmission support structure of claim 1, wherein, The cover (4) is provided with a heat dissipation hole (41).

10. The drive support structure of claim 9, wherein, The maximum distance between the two covers (4) is less than the height of the center rotating column (2).

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