Inner chain link of speed chain, speed chain and conveying line
By designing the internal links of the double-speed chain, using high-quality alloy steel materials and heat treatment technology, combining interference and gap coordination, the problems of heavy noise and serious wear of the double-speed chain are solved, reducing noise and wear and reducing maintenance costs.
Patent Information
- Application Number
- CN202422224043.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-11
- Publication Date
- 2025-07-01
- Estimated Expiration
- 2034-09-11
AI Technical Summary
The existing speed double-speed chains have high roller running noise and severe wear during use, resulting in high maintenance costs.
A speed-to-speed chain internal link is designed, including connecting pins, inner sleeves, outer sleeves and rollers. It is rotatably sleeved in the inner sleeve through the outer sleeve. It uses high-quality alloy steel material and heat treatment to reduce roughness and increase the smoothness of the rotating contact surface. At the same time, interference fit and gap fit are used to reduce wear.
Reduces operating noise, improves chain stability and reduces wear, thereby reducing maintenance frequency and maintenance costs.
Smart Images
Figure CN223046481U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of conveyor chains, and more specifically, to a double-speed chain inner link, a double-speed chain and a conveyor line. Background Art
[0002] A double-speed chain is a special roller conveyor chain. Its moving speed on the conveyor line remains constant, but the tooling plates and workpieces above the chain can control their moving speeds as needed, stop at specific positions for assembly operations, and then continue to move forward. This kind of chain is also called a controllable beat conveyor chain, a free beat conveyor chain, a differential chain or a differential drive chain. However, during the use of the existing double-speed chain, there are problems such as large running noise of the rollers, and high maintenance costs due to large wear. Summary of the Utility Model
[0003] The purpose of the utility model is to provide a double-speed chain inner link, a double-speed chain and a conveyor line, which can reduce the running noise, improve the running stability of the chain, reduce its running wear, and thus reduce its maintenance frequency and maintenance costs.
[0004] The embodiments of the utility model are implemented as follows:
[0005] In a first aspect, the utility model provides a double-speed chain inner link, which includes a connecting pin shaft, an inner sleeve, an outer sleeve, a first roller and two inner chain plates;
[0006] Both ends of the connecting pin shaft are respectively connected to the two inner chain plates; the inner sleeve is sleeved on the connecting pin shaft, and both ends thereof are respectively connected to the two inner chain plates;
[0007] The outer sleeve is rotatably sleeved on the inner sleeve; the first roller is connected to the outer sleeve and is located between the two inner chain plates.
[0008] In an optional embodiment, the outer sleeve and the first roller are in interference fit.
[0009] In an optional embodiment, the double-speed chain inner link further includes two second rollers, and both of the two second rollers are rotatably connected to the outer sleeve.
[0010] In an optional embodiment, along the axis direction of the connecting pin shaft, the first roller is located between the two second rollers.
[0011] In an optional embodiment, the outer diameter of the second roller is smaller than the outer diameter of the first roller.
[0012] In an optional embodiment, the outer sleeve and the second roller are in clearance fit.
[0013] In an alternative embodiment, the inner link plate is configured with mounting holes for mating with the connecting pin shafts, and at least a portion of the inner sleeve extends into the mounting holes.
[0014] In an alternative embodiment, a first limiting plane is disposed on the outer periphery of the portion of the inner sleeve extending into the mounting hole;
[0015] The mounting hole is configured with a second limiting plane that is in surface contact with the first limiting plane.
[0016] In a second aspect, the present utility model provides a double-speed chain, which includes a plurality of outer link sections and a plurality of the above-mentioned double-speed chain inner link sections;
[0017] The plurality of outer link sections and the plurality of double-speed chain inner link sections are connected in a staggered order.
[0018] In a third aspect, the present utility model provides a conveyor line, which includes the above-mentioned double-speed chain.
[0019] The beneficial effects of the embodiments of the present utility model are as follows:
[0020] The double-speed chain inner link section includes a connecting pin shaft, an inner sleeve, an outer sleeve, a first roller, and two inner link plates; both ends of the connecting pin shaft are respectively connected to the two inner link plates; the inner sleeve is sleeved on the connecting pin shaft, and both ends thereof are respectively connected to the two inner link plates; the outer sleeve is rotatably sleeved on the inner sleeve; the first roller is connected to the outer sleeve and is located between the two inner link plates. The double-speed chain inner link section is used for forming a double-speed chain, which can reduce the running noise while improving the running smoothness of the chain, reducing its running wear, and further reducing its maintenance frequency, thereby reducing the maintenance cost. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for use in the embodiments. It should be understood that the following drawings only show some embodiments of the present utility model, and thus should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can also be obtained based on these drawings without creative efforts.
[0022] Figure 1 is a cross-sectional view of the double-speed chain inner link section in the embodiment of the present utility model;
[0023] Figure 2 is a structural diagram of the double-speed chain inner link section in the embodiment of the present utility model;
[0024] Figure 3 is a cross-sectional view of the double-speed chain in the embodiment of the present utility model;
[0025] Figure 4 is a structural diagram of the double-speed chain in the embodiment of the present utility model.
[0026] Icons: 100 - inner link of double - speed chain; 110 - connecting pin; 120 - inner sleeve; 130 - outer sleeve; 140 - first roller; 150 - inner link plate; 160 - second roller; 151 - mounting hole; 121 - first limiting plane; 152 - second limiting plane; 200 - double - speed chain; 210 - outer link. Detailed implementation
[0027] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. The components of the embodiments of the present utility model usually described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.
[0028] Therefore, the following detailed description of the embodiments of the present utility model provided in the accompanying drawings is not intended to limit the scope of the claimed present utility model, but merely represents selected embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts fall within the scope of protection of the present utility model.
[0029] It should be noted that: similar reference numerals and letters indicate similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.
[0030] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the utility model product is usually placed during use. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present utility model. In addition, the terms "first", "second", "third", etc. are only used for descriptive distinction and cannot be understood as indicating or implying relative importance.
[0031] In addition, terms such as "horizontal" and "vertical" do not mean that the components are required to be absolutely horizontal or hanging vertically, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.
[0032] In the description of the present utility model, it should also be noted that unless otherwise clearly specified and defined, the terms "set", "installed", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.
[0033] Please refer to Figures 1 - 4 , this embodiment provides a double-speed chain inner link 100. The double-speed chain inner link 100 includes a connecting pin shaft 110, an inner sleeve 120, an outer sleeve 130, a first roller 140, and two inner link plates 150;
[0034] Both ends of the connecting pin shaft 110 are respectively connected to the two inner link plates 150; the inner sleeve 120 is sleeved on the connecting pin shaft 110, and both ends thereof are respectively connected to the two inner link plates 150;
[0035] The outer sleeve 130 is rotatably sleeved on the inner sleeve 120; the first roller 140 is connected to the outer sleeve 130 and is located between the two inner link plates 150.
[0036] Please refer to Figures 1 - 4 , the working principle of the double-speed chain inner link 100 is as follows:
[0037] First of all, the double-speed chain inner link 100 is used to form a double-speed chain 200. During its use, during the operation of the double-speed chain 200, the first roller 140 can play a role in transporting materials, and during the rolling contact between the materials and the first roller 140, the conveying speed thereof can be inconsistent with the speed of the double-speed chain 200;
[0038] During this process, since the first roller 140 rotates, and during its rotation, according to its structural setting, that is, the first roller 140 is connected to the outer sleeve 130, and the outer sleeve 130 is rotatably sleeved on the inner sleeve 120. Therefore, when the first roller 140 rotates, it will rotate synchronously with the outer sleeve 130, that is, at this time, the outer sleeve 130 will rotate relative to the inner sleeve 120, and such a rotational structure setting can increase the contact area of rotation through the rotational connection between the outer sleeve 130 and the inner sleeve 120, and thus can reduce the noise during the rotation of the first roller 140 and improve the running stability during the rotation of the first roller 140 in this way;
[0039] In addition, such a structural arrangement can also reduce its roughness and improve the smoothness of its rotating contact surface by improving the manufacturing materials and processes of the outer sleeve 130 and the inner sleeve 120, thereby reducing the wear between the outer sleeve 130 and the inner sleeve 120 and improving the smoothness of its rotation. Specifically, in this embodiment, the outer sleeve 130 and the inner sleeve 120 are made of high-quality alloy steel, and heat treatment technology is used to perform special C-N co-permeation to increase the surface hardness and refine the surface retained austenite structure; and after heat treatment, polishing is performed again to make its roughness reach Ra0.2, thereby reducing its running wear, reducing its maintenance frequency, and thus reducing the maintenance cost.
[0040] Furthermore, please refer to Figures 1 - 4 , based on the above structural arrangement, when connecting the first roller 140 and the outer sleeve 130, since the outer sleeve 130 is rotatably connected to the inner sleeve 120, based on this, to prevent relative rotation between the first roller 140 and the outer sleeve 130 during the rotation of the first roller 140, therefore, an interference fit between the outer sleeve 130 and the first roller 140 can be adopted, and the purpose is to prevent relative rotation between the first roller 140 and the outer sleeve 130 and thus cause rotational wear between the first roller 140 and the outer sleeve 130.
[0041] In addition, on the basis of the above structure, the double-speed chain inner link 100 further includes two second rollers 160, and both of the two second rollers 160 are rotatably connected to the outer sleeve 130. When configuring the second rollers 160, along the axis direction of the connecting pin shaft 110, the first roller 140 is located between the two second rollers 160. The outer diameter of the second roller 160 is smaller than the outer diameter of the first roller 140. The outer sleeve 130 is in clearance fit with the second roller 160.
[0042] Such a setting method can play a role in supporting and guiding through the second roller 160, that is, it can not only support the weight of the chain, but also guide the movement of the chain along the guide rail; thus, it can roll on the guide rail, reduce the friction between the chain and the guide rail, and improve the running efficiency of the chain.
[0043] Since the outer diameter of the first roller 140 is larger than that of the second roller 160, the first roller 140 can carry heavier materials; in addition, the diameter of the first roller 140 is larger than that of the second roller 160, and this design enables the moving speed of the material to be a multiple of the moving speed of the chain itself, which is the origin of the name of the double-speed chain 200. When the chain moves at a certain speed, the material can move at a faster speed driven by the first roller 140, thereby improving the efficiency of the production line. Moreover, the contact area between the first roller 140 and the material is relatively large, and the load can be more evenly distributed, reducing wear.
[0044] In summary, please refer toFigures 1 - 4 During the operation of the double-speed chain 200, the combined use of the first roller 140 and the second roller 160 enables the smooth operation of the chain and the rapid movement of the material. This design allows for precise control of the material on the continuously running chain, enabling it to move quickly or stop at specific positions when needed to meet different assembly or processing requirements.
[0045] Furthermore, please refer to Figures 1 - 4 In this embodiment, when configuring the inner link plate 150, the inner link plate 150 is configured with a mounting hole 151 that mates with the connecting pin 110, and at least a portion of the inner sleeve 120 extends into the mounting hole 151. Moreover, a first limiting plane 121 is configured on the outer periphery of the portion of the inner sleeve 120 that extends into the mounting hole 151; the mounting hole 151 is configured with a second limiting plane 152 that is in surface contact with the first limiting plane 121. With this setup, when installing the inner sleeve 120, the surface contact between the first limiting plane 121 and the second limiting plane 152 can restrict the rotation of the inner sleeve 120 relative to the inner link plate 150 or the connecting pin 110.
[0046] It should be noted that based on the above structural setup, when configuring the mounting hole 151 and the inner sleeve 120, since the above-mentioned first limiting plane 121 and second limiting plane 152 need to be formed, the mounting hole 151 can be in the form of a "D-shaped hole" and has a clearance fit with the inner sleeve 120;
[0047] The cross-sectional profile of the inner sleeve 120 can be "D-shaped", and it can be milled flat on one side at both ends. After it mates with the above-mentioned mounting hole 151, relative rotation of both sleeves during operation can be avoided, and the clearance fit ensures smoothness during long-distance transportation;
[0048] It also should be noted that since both inner link plates 150 are configured with the aforementioned mounting hole 151, based on this, both ends of the inner sleeve 120 are milled flat on one side to ensure the minimum inner width of the inner joint after the chain is assembled, and to avoid the phenomenon of roller blockage caused by the axial movement of the inner link plate 150 under force during operation.
[0049] Based on the above content, please refer to Figures 1 - 4 This embodiment also provides a double-speed chain 200, which includes a plurality of outer link sections 210 and a plurality of the above-mentioned double-speed chain inner link sections 100; the plurality of outer link sections 210 and the plurality of double-speed chain inner link sections 100 are connected in a staggered order; and a conveying line is provided based on the double-speed chain 200, and the conveying line includes the above-mentioned double-speed chain 200.
[0050] In summary, by adopting the above-mentioned double-speed chain 200, the conveyor line can, through the application of the inner double-speed chain links 100 in the double-speed chain 200, improve the running stability of the chain while reducing the running noise, reduce its running wear, and thus reduce its maintenance frequency, thereby reducing the maintenance cost.
[0051] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention can have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.
Claims
1. An inner link of a double-speed chain, characterized in that: The inner link of the speed chain includes a connecting pin, an inner sleeve, an outer sleeve, a first roller and two inner link plates; The two ends of the connecting pin are respectively connected to the two inner link plates; the inner sleeve is sleeved on the connecting pin, and the two ends thereof are respectively connected to the two inner link plates; The outer sleeve is rotatably sleeved on the inner sleeve; the first roller is connected to the outer sleeve and is located between the two inner link plates.
2. The inner link of the double-speed chain according to claim 1, characterized in that: The outer sleeve is interference fit with the first roller.
3. The inner link of the double-speed chain according to claim 1, characterized in that: The inner link of the double-speed chain also includes two second rollers, and both of the second rollers are rotatably connected to the outer sleeve.
4. The inner link of the double-speed chain according to claim 3, characterized in that: Along the axis of the connecting pin, the first roller is located between the two second rollers.
5. The inner link of the double-speed chain according to claim 3, characterized in that: The outer diameter of the second roller is smaller than the outer diameter of the first roller.
6. The inner link of the double-speed chain according to claim 3, characterized in that: The outer sleeve is clearance-matched with the second roller.
7. The inner link of the double-speed chain according to any one of claims 1 to 6, characterized in that: The inner link plate is provided with a mounting hole matched with the connecting pin shaft, and at least a portion of the inner sleeve extends into the mounting hole.
8. The inner link of the double-speed chain according to claim 7, characterized in that: The outer periphery of the portion of the inner sleeve extending into the mounting hole is provided with a first limiting plane; The mounting hole is provided with a second limiting plane in surface contact with the first limiting plane.
9. A double-speed chain, characterized in that: The double-speed chain comprises a plurality of outer chain links and a plurality of inner chain links of the double-speed chain according to any one of claims 1 to 8; The plurality of outer chain links are connected to the plurality of inner chain links of the speed chain in a staggered sequence.
10. A conveyor line, characterized in that: The conveyor line includes the double-speed chain as described in claim 9.