Transmission mechanism and chain structure thereof

Abstract

The utility model relates to a transmission mechanism and a chain structure thereof, the transmission mechanism comprises a plurality of groups of plate chain units connected end to end, and each plate chain unit comprises a first plate chain group and a second plate chain group which are hinged with each other; the first plate chain set comprises a first connecting plate of a Y-shaped structure, the second plate chain set comprises a second connecting plate of a Y-shaped structure, the first connecting plate and the second connecting plate are connected in an inserted mode, the inserted connection portions are connected through a pin shaft, and the pin shaft is rotationally connected to the first connecting plate or the second connecting plate through a rotating bearing. The two ends of the pin shaft extend out of the first connecting plate and / or the second connecting plate, and the two extending ends are connected with guide bearings respectively. According to the chain structure provided by the utility model, the bearing structure is arranged in the connecting plate, so that the matching size change caused by relative friction between the connecting plate and the corresponding pin shaft can be reduced, and the conveying and positioning precision and the punctuality of power transmission are effectively improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to mechanical drive technical field, concretely is a transmission mechanism and chain structure thereof. BACKGROUND

[0002] Chain is important transmission component, it usually cooperates with sprocket, is widely used in the transmission structure of various lamp inspection equipment. At present, the connecting plate and connecting pin shaft of the roller chain used in the market are the matching connection relation of hole and shaft, the roller chain will be worn in size of hole or shaft due to the relative rotation friction of hole and shaft after long time use, causes the matching size change of connecting plate and connecting pin shaft, further influences the conveying positioning precision of roller chain, and causes the transmission power delay lag. SUMMARY

[0003] The utility model discloses a transmission mechanism and chain structure thereof, which can solve the technical problems mentioned in the background.

[0004] To achieve the above object, the utility model provides the following technical scheme: a chain structure, comprising a plurality of groups of first and second plate chain units connected in series, the plate chain unit includes the first plate chain group and the second plate chain group articulated with each other;

[0005] The first plate chain group includes the first connecting plate structured as Y-shaped structure, the second plate chain group includes the second connecting plate structured as Y-shaped structure, the first connecting plate and the second connecting plate are inserted, the insertion site is connected through the pin shaft, the pin shaft is rotatably connected to the first connecting plate or the second connecting plate through the rotary bearing, the both ends of the pin shaft are stretched out in the first connecting plate and / or the second connecting plate, and the both ends stretched out are connected with guide bearing respectively.

[0006] In a preferred embodiment, the first connecting plate includes connecting plate a and two parallel distributed connecting plate b connected to one side of connecting plate a, and a first insertion space is formed between the two connecting plate b;The second connecting plate includes connecting plate d matched with the first insertion space, two parallel distributed connecting plate e connected to one side of connecting plate d, and a second insertion space matched with connecting plate a is formed between the two connecting plate e.

[0007] In a preferred embodiment, the connecting plate a is provided with a through hole a arranged along the Z direction, the two connecting plates b are respectively provided with a through hole b arranged along the Z direction, the connecting plate d is provided with a through hole d arranged along the Z direction, and the two connecting plates e are respectively provided with a through hole e arranged along the Z direction; the first plate chain group further comprises a first pin shaft rotatably connected to the through hole a by a first rotating bearing, and the first pin shaft is fixedly connected to the through hole e of the second connecting plate of the adjacent plate chain unit; the second plate chain group further comprises a second pin shaft fixedly connected to the through hole d, and the second pin shaft is rotatably connected to the through hole b by a second rotating bearing.

[0008] In a preferred embodiment, the first pin shaft and the second pin shaft are both provided with an oil injection channel arranged along the height direction, the oil injection channel is provided with an oil outlet hole at the corresponding bearing position, and the inlet end of the oil injection channel is connected with an oil injection nozzle.

[0009] In a preferred embodiment, the first connecting plate further comprises a connecting plate c connected between the connecting plate a and the two connecting plates b, the connecting plate c is provided with a through hole c arranged along the Y direction, the first plate chain group further comprises a fourth pin shaft connected to the through hole c, and the two ends of the fourth pin shaft respectively extend out of the through hole c and are respectively connected with a positioning bearing;

[0010] And / or

[0011] The second connecting plate further comprises a connecting plate f connected between the connecting plate d and the two connecting plates e, the connecting plate f is provided with a through hole f arranged along the Y direction, the second plate chain group further comprises a fifth pin shaft connected to the through hole f, and the two ends of the fifth pin shaft respectively extend out of the through hole f and are respectively connected with a positioning bearing.

[0012] The utility model discloses a kind of transmission mechanism, including the chain structure and sprocket structure compatible with it.

[0013] In a preferred embodiment, the sprocket structure includes a circular sprocket body and two rows of teeth fixed to the upper and lower end faces of the sprocket body, and the two rows of teeth are respectively engaged with the guide bearings at both ends.

[0014] In a preferred embodiment, the outer ring surface of the sprocket body is further provided with a positioning groove arranged circumferentially along the outer ring surface for cooperation with the positioning bearing.

[0015] Compared with the prior art, the utility model has the following advantages:

[0016] 1. The chain structure provided by the utility model adopts a bearing structure arranged inside the connecting plate, which can reduce the relative friction between the connecting plate and the corresponding pin shaft to cause the change in fitting size, thereby effectively improving the positioning accuracy of conveying and the timeliness of power transmission.

[0017] 2. The transmission mechanism can improve the stability of the cooperation of the sprocket structure with the positioning groove and the chain structure with the positioning bearing, and further improve the conveying positioning precision. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 Structure diagram of the mutual connection of the two plate chain units in the embodiment of the present application;

[0019] Figure 2 Structure diagram of the mutual connection of the two plate chain units in the embodiment of the present application;

[0020] Figure 3 Structure diagram of the mutual connection of the two plate chain units in the embodiment of the present application;

[0021] Figure 4 Structure diagram of the mutual connection of the two plate chain units in the embodiment of the present application;

[0022] The meanings of the various reference numerals in the drawings are as follows:

[0023] 1. First plate chain group; 2. Second plate chain group; 11. First connecting plate; 111. Connecting plate a; 112. Connecting plate b; 113. Connecting plate c; 114. Through hole a; 115. Through hole b; 116. Through hole c; 12. First rotating bearing; 13. First pin shaft; 14. First guide bearing; 15. Fourth pin shaft; 21. Second connecting plate; 211. Connecting plate d; 212. Connecting plate e; 213. Connecting plate f; 214. Through hole d; 215. Through hole e; 216. Through hole f; 22. Second pin shaft; 23. Second rotating bearing; 24. Second guide bearing; 25. Fifth pin shaft; 3. Oil injection channel; 4. Oil injection nozzle; 5. Sprocket structure; 51. Sprocket main body; 52. Upper row of teeth; 53. Lower row of teeth; 54. Positioning groove; 6. Positioning bearing. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0025] In the description of the utility model, it is understood that the orientation or position relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is the orientation or position relationship shown based on the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0026] Referring to Figures 1-2 The embodiment discloses a chain structure, which comprises a plurality of groups of plate chain units connected in a head-to-tail manner, and the plate chain unit comprises a first plate chain group 1 and a second plate chain group 2 which are hingedly connected to each other.

[0027] The first plate chain group 1 comprises a first connecting plate 11 configured in a Y-shaped structure, and the second plate chain group 2 comprises a second connecting plate 21 configured in a Y-shaped structure, the Y-shaped structure forms a plug-in space, the first connecting plate 11 and the second connecting plate 21 are plugged into each other, the plugged part is connected through a pin shaft, the pin shaft is fixedly connected to one of the connecting plates and rotatably connected to the other connecting plate through a rotary bearing, both ends of the pin shaft extend out of the first connecting plate 11 and / or the second connecting plate 21, and the two extending ends are respectively connected with guide bearings.

[0028] Specifically, referring to Figure 3 The first connecting plate 11 further comprises a connecting plate a111 and two branch connecting plates b112 connected to one side of the connecting plate a111, the two branch connecting plates b112 are distributed in parallel, the connecting plate a111 and the two connecting plates b112 are connected through a connecting plate c113, and the setting position of the connecting plate c113 is perpendicular to the connecting plate b112, in the embodiment, the first connecting plate 11 is configured in a Y-shaped structure as a whole, and the two branch connecting plates b112 form a first plug-in space.

[0029] In order to ensure the stability of the connection between the connecting plate a111, the connecting plate b112 and the connecting plate c113, the three are preferably integrally formed.

[0030] The connecting plate a111 is provided with a through hole a114 arranged along the Z direction, the two connecting plates b112 are respectively provided with through holes b115 arranged along the Z direction, and the center of the connecting plate c113 is provided with a through hole c116 arranged along the Y direction.

[0031] Continuing to refer to Figure 3The second connecting plate 21 further comprises a connecting plate d211 and two branch connecting plates e212 connected to one side of the connecting plate d211, the two branch connecting plates e212 are distributed in parallel, the connecting plate d211 and the two connecting plates e212 are connected through a connecting plate f213, the setting direction of the connecting plate f213 is perpendicular to the connecting plates e212, in the embodiment, the second connecting plate 21 is configured as a Y-shaped structure as a whole, and the second plug-in space is formed between the two branch connecting plates e212.

[0032] In order to ensure the stability of the connection between the connecting plate d211, the connecting plate e212 and the connecting plate f213, the three are preferably integrally formed.

[0033] The connecting plate d211 is provided with a through hole d214 arranged along the Z direction, the two connecting plates e212 are respectively provided with a through hole e215 arranged along the Z direction, and the center of the connecting plate f213 is provided with a through hole f216 arranged along the Y direction.

[0034] The first plug-in space and the connecting plate d211 are matched in shape, and the second plug-in space and the connecting plate a111 are matched in shape, so that the connecting plate d211 can extend into the first plug-in space, and the connecting plate a111 of the adjacent unit can extend into the second plug-in space, thereby enabling each plate chain group in the plate chain unit and each plate chain unit to be connected to each other.

[0035] Referring to Figure 1 Further, the first plate chain group 1 further comprises a first pin shaft 13 rotatably connected to the through hole a114 through a first rotating bearing 12, and the first pin shaft 13 passes through the through hole e215 of the second connecting plate 21 of the adjacent plate chain unit at the two ends thereof, and the first pin shaft 13 is in interference fit with the through hole e215. Further, through the rotating fit of the first pin shaft 13 and the through hole a114, and the fixed fit with the through hole e215 of the adjacent plate chain unit, the adjacent plate chain units are hinged to each other.

[0036] The second plate chain group 2 further comprises a second pin shaft 22 fixedly connected to the through hole d214, and the two ends of the second pin shaft 22 pass through the through hole b115 of the first connecting plate 11, the second pin shaft 22 is in interference fit with the through hole d214, and the second pin shaft 22 is rotatably connected with the two through holes b115 through a second rotating bearing 23. Further, through the fixed fit of the second pin shaft 22 and the through hole d214, and the rotating fit with the through hole b115, the first plate chain group 1 and the second plate chain group 2 in the same plate chain unit are hinged to each other.

[0037] Preferably, in the embodiment, the first pin shaft 13 and the second pin shaft 22 are both provided with an oil injection channel 3 arranged along the height direction, the oil injection channel 3 is provided with an oil outlet hole at the corresponding bearing position, and the inlet end of the oil injection channel 3 is connected with an oil injection nozzle 4. Through the oil injection structure, the first bearing and the second bearing installed inside the chain can be conveniently lubricated. In the embodiment, the first bearing and the second bearing are preferably needle bearings with compact structure and high load capacity, so as to adapt to the limited installation environment in the through hole.

[0038] Further, the two ends of the first pin shaft 13 respectively pass through the connecting plates e212 of the adjacent plate chain units, and the two ends passing through are respectively connected with the first guide bearing 14; similarly, the two ends of the second pin shaft 22 respectively pass through the connecting plates b112, and the two ends passing through are respectively connected with the second guide bearing 24. The first guide bearing 14 and the second guide bearing 24 are the running guide bearings of the chain, both of which are of the same specification and are respectively used for meshing with the upper row of teeth 52 and the lower row of teeth 53 of the sprocket.

[0039] The embodiment further provides a transmission mechanism adopting the chain structure, and the transmission mechanism comprises the chain structure and a sprocket structure 5 matched with the chain structure, as shown in Figure 4 In the embodiment, the sprocket structure 5 comprises a circular sprocket body 51 and two rows of teeth fixed to the upper and lower end faces of the sprocket body 51, which are respectively an upper row of teeth 52 and a lower row of teeth 53. The two rows of teeth are used for meshing transmission with the first guide bearing 14 and the second guide bearing 24 of the chain structure.

[0040] In order to strengthen the cooperation stability of the chain structure and the sprocket structure 5, in the embodiment, the outer ring surface of the sprocket body 51 is further provided with a positioning groove 54, and the positioning groove 54 is arranged along the circumference of the outer ring surface. Correspondingly, in combination with Figure 2 The chain structure is provided with a positioning bearing 6 matched with the positioning groove 54, specifically, the first plate chain group 1 further comprises a fourth pin shaft 15 fixedly connected in the through hole c116, the two ends of the fourth pin shaft 15 respectively extend out of the through hole c116 and are respectively connected with the first positioning bearing 6; the second plate chain group 2 further comprises a fifth pin shaft 25 fixedly connected in the through hole f216, the two ends of the fifth pin shaft 25 respectively extend out of the through hole f216 and are respectively connected with the second positioning bearing 6. The two positioning bearings 6 and the positioning groove 54 of the sprocket body 51 cooperate, which can enhance the cooperation stability of the chain structure and the sprocket structure 5, and can also be used for running guide of the chain structure.

[0041] In the embodiment, the bearings connected to the shaft ends are all limited by elastic retaining rings for shafts, which is a prior art and will not be described in detail.

[0042] The chain structure provided by the embodiment adopts a bearing structure arranged in a connecting plate, can reduce the cooperation size change caused by the relative friction between the connecting plate and the corresponding pin shaft, and thus effectively improves the conveying positioning precision and the on-time performance of power transmission.

[0043] The basic principle, main features and advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above embodiments, and the above embodiments and descriptions in the specification are only preferred examples of the present application and are not intended to limit the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A chain structure, characterized by, The chain structure comprises a plurality of groups of plate chain units connected end to end, the plate chain units comprising a first plate chain group (1) and a second plate chain group (2) hingedly connected to each other; The first plate chain group (1) comprises a first connecting plate (11) configured as a Y-shaped structure, and the second plate chain group (2) comprises a second connecting plate (21) configured as a Y-shaped structure, the first connecting plate (11) and the second connecting plate (21) are spliced, the spliced part is connected by a pin shaft, the pin shaft is rotatably connected to the first connecting plate (11) or the second connecting plate (21) through a rotary bearing, both ends of the pin shaft extend out of the first connecting plate (11) and / or the second connecting plate (21), and the two extending ends are respectively connected with guide bearings.

2. The chain structure according to claim 1, wherein The first connecting plate (11) comprises a connecting plate a (111) and two connecting plates b (112) connected to one side of the connecting plate a (111) and arranged in parallel, and a first splicing space is formed between the two connecting plates b (112); The second connecting plate (21) comprises a connecting plate d (211) matched with the first splicing space, two connecting plates e (212) connected to one side of the connecting plate d (211) and arranged in parallel, and a second splicing space matched with the connecting plate a (111) is formed between the two connecting plates e (212).

3. The chain structure according to claim 2, wherein The connecting plate a (111) is provided with a through hole a (114) arranged in the Z direction, the two connecting plates b (112) are respectively provided with a through hole b (115) arranged in the Z direction, the connecting plate d (211) is provided with a through hole d (214) arranged in the Z direction, and the two connecting plates e (212) are respectively provided with a through hole e (215) arranged in the Z direction; The first plate chain group (1) further comprises a first pin shaft (13) rotatably connected to the through hole a (114) through a first rotary bearing (12), and the first pin shaft (13) is fixedly connected to the through hole e (215) of the second connecting plate (21) of the adjacent plate chain unit; The second plate chain group (2) further comprises a second pin shaft (22) fixedly connected to the through hole d (214), and the second pin shaft (22) is rotatably connected to the through hole b (115) through a second rotary bearing (23).

4. The chain structure according to claim 3, characterized in that, Both the first pin shaft (13) and the second pin shaft (22) are provided with an oil injection channel (3) arranged in the height direction, the oil injection channel (3) is provided with an oil outlet hole at the corresponding bearing position, and an oil injection nozzle (4) is connected to the inlet end of the oil injection channel (3).

5. The chain structure of claim 2, wherein, The first connecting plate (11) further comprises a connecting plate c (113) connected between the connecting plate a (111) and the two connecting plates b (112), the connecting plate c (113) is provided with a through hole c (116) arranged in the Y direction, the first plate chain group (1) further comprises a fourth pin shaft (15) connected to the through hole c (116), both ends of the fourth pin shaft (15) extend out of the through hole c (116) and are respectively connected with a positioning bearing (6); and / or ​ The second connecting plate (21) further comprises a connecting plate f (213) connected between the connecting plate d (211) and the two connecting plates e (212), the connecting plate f (213) is provided with a through hole f (216) arranged along the Y direction, and the second plate chain set (2) further comprises a fifth pin shaft (25) connected to the through hole f (216), both ends of the fifth pin shaft (25) respectively extend out of the through hole f (216) and are respectively connected with the locating bearing (6).

6. A transmission mechanism, characterized by, The chain structure comprises the chain structure according to any one of claims 1-5 and a sprocket structure (5) matched with the chain structure.

7. The transmission mechanism of claim 6, wherein The sprocket structure (5) comprises a circular sprocket body (51) and two rows of teeth fixed on the upper and lower end faces of the sprocket body (51), and the two rows of teeth are respectively engaged with the guide bearings at both ends.

8. The transmission mechanism of claim 7, wherein The outer ring surface of the sprocket body (51) is further provided with a positioning groove (54), the positioning groove (54) is arranged along the circumference of the outer ring surface, and is used for cooperating with the positioning bearing (6).

Images