A flight of a helical flight
By designing the chain plate of the spiral chain and adopting a combination structure of sliding contact between the roller and the conveyor track and support teeth and connecting grooves, the problem of high friction between the conveyor chain and the track is solved, thereby reducing wear and extending service life.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI ZOLL TRANSMISSION EQUIP CO LTD
- Filing Date
- 2025-08-13
- Publication Date
- 2026-07-03
AI Technical Summary
The existing conveyor chain has high friction with the conveyor track, resulting in severe wear and easy damage to the support teeth.
A chain plate for a spiral chain was designed, comprising a support plate, legs, rollers, and a connecting structure. Friction is reduced by the sliding contact between the rollers and the conveyor track, and the load-bearing capacity is improved by the design of the support teeth and connecting grooves.
It reduces the friction between the chain plate and the conveyor track, extends the service life of the chain plate, and improves the load-bearing capacity of the support teeth.
Smart Images

Figure CN224449073U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of spiral chain technology, and in particular to a chain plate for a spiral chain. Background Technology
[0002] In the field of conveying equipment, chain conveyors are widely used in industries such as food, pharmaceuticals, and electronics due to their stable conveying and high load-bearing capacity. Screw conveyor chains transport materials upwards in a small-angle spiral motion. However, existing conveyor chains have relatively high friction with the conveyor track, making them prone to wear. Furthermore, the support teeth on existing chain plates lack underlying support, making their front ends susceptible to damage. Summary of the Invention
[0003] According to an embodiment of the present invention, a chain plate for a spiral chain is provided, comprising:
[0004] A support plate, with several support teeth at its front and rear ends respectively, and a first connecting groove between adjacent support teeth;
[0005] The lower end of the support plate is provided with a first leg and a second leg, and a conveying groove is formed between the first leg and the second leg;
[0006] The first roller is rotatably disposed between the support plate and the first leg;
[0007] The second roller is rotatably connected to the first leg;
[0008] The axis of the first roller is perpendicular to the axis of the second roller.
[0009] Furthermore, the first leg and the second leg are L-shaped.
[0010] Furthermore, a reinforcing plate is provided at the lower end of the support plate near the first leg, and a first U-shaped groove is provided at the end of the reinforcing plate; a second U-shaped groove is provided at the lower end of the first leg corresponding to the first U-shaped groove.
[0011] Furthermore, it also includes: a connecting column and a connecting cap; the upper end of the connecting column is provided with an annular limiting step, a roller is sleeved on the connecting column, and the connecting cap is sleeved on the bottom of the connecting column.
[0012] Furthermore, an elastic plate is provided on the first foot, and a limiting protrusion is provided on the elastic plate to limit the position of the connecting cap.
[0013] Furthermore, each of the first and second legs has a pair of first connecting holes on its inner side for connecting to the conveyor chain.
[0014] Furthermore, a limiting groove is provided on the first foot, the limiting groove passes through the first foot, and the second roller is set in the limiting groove and protrudes from the limiting groove.
[0015] Furthermore, a second connecting hole is provided on the first foot, the second connecting hole passes through the limiting groove, a connecting pin is inserted into the second connecting hole, and the connecting pin passes through the second roller.
[0016] According to the embodiment of the present invention, the chain plate of the spiral chain has low friction with the conveying track, and the support teeth can improve their force-bearing capacity by contacting the first connecting groove, which greatly extends the service life of a single chain plate.
[0017] It should be understood that both the foregoing general description and the following detailed description are exemplary and intended to provide further illustration of the claimed technology. Attached Figure Description
[0018] Figure 1 This is a schematic diagram from a first perspective of the conveyor chain according to an embodiment of the present invention, showing three chain plates connected in series.
[0019] Figure 2 for Figure 1 A bottom view;
[0020] Figure 3 This is a schematic diagram from a second perspective showing the conveyor chain according to an embodiment of the present invention, after three chain plates are connected in series.
[0021] Figure 4 This is a schematic diagram of the structure of the chain plate plus the conveyor chain according to an embodiment of the present utility model;
[0022] Figure 5 This is a schematic diagram of the chain plate according to an embodiment of the present utility model from a first perspective;
[0023] Figure 6 for Figure 5 Top view;
[0024] Figure 7 for Figure 5 The main view;
[0025] Figure 8 for Figure 5 The left view;
[0026] Figure 9 for Figure 8 Sectional view along axis AA;
[0027] Figure 10 for Figure 9 Enlarged view of point A;
[0028] Figure 11 This is a schematic diagram of the chain plate according to an embodiment of the present utility model from a second perspective;
[0029] Figure 12 for Figure 11Enlarged view of point B.
[0030] Figure 13 This is an enlarged view of a partial structure of the chain plate according to an embodiment of the present utility model. Detailed Implementation
[0031] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, further illustrating the present invention.
[0032] First, combine Figures 1-13 The description of the chain plate of the spiral chain according to an embodiment of the present utility model is used in conveying equipment and has a wide range of applications.
[0033] like Figures 1-13 As shown, the chain plate of the spiral chain in this embodiment of the present invention includes:
[0034] Support plate 1, with a number of support teeth 11 at the front and rear ends of support plate 1 respectively, and a first connecting groove 12 between adjacent support teeth 11. During assembly, the support teeth 11 on the chain plate are inserted into the first connecting groove 12 on the adjacent chain plate, and the first connecting groove 12 provides support for the inserted support teeth 11.
[0035] The lower end of the support plate 1 is provided with a first leg 2 and a second leg 3. A conveying groove 4 is formed between the first leg 2 and the second leg 3. The chain 9 of the drive chain plate is placed in the conveying groove 4 to connect a certain number of chain plates to form the entire spiral chain. Under the drive of the motor, the chain 9 drives the spiral chain to move.
[0036] The first roller 5 is rotatably disposed between the support plate 1 and the first support leg 2. When the spiral chain turns, the first roller 5 slides in contact with the side of the conveying track to reduce friction.
[0037] The second roller 6 is rotatably connected to the first support leg 2. The second roller 6 slides in contact with the bottom of the conveyor track to reduce the friction between the bottom of the chain plate and the conveyor track.
[0038] The axis of the first roller 5 is perpendicular to the axis of the second roller 6.
[0039] Furthermore, such as Figure 7 As shown, in this embodiment, the first leg 2 and the second leg 3 are L-shaped, which facilitates their cooperation with the track on the conveyor, so that the chain plate moves along the track.
[0040] Furthermore, such as Figure 8 , 12 As shown, in this embodiment, a reinforcing plate 13 is provided at the lower end of the support plate 1 near the first leg 2, and a first U-shaped groove 131 is provided at the end of the reinforcing plate 13; a second U-shaped groove 21 is provided at the lower end of the first leg 2 corresponding to the first U-shaped groove 131.
[0041] Furthermore, such as Figure 8 , 10 As shown, in this embodiment, it also includes: a connecting post 71 and a connecting cap 72; the upper end of the connecting post 71 is provided with an annular limiting step 711, which is used to limit the position of the first roller 5; the first roller 5 is sleeved on the connecting post 71, the connecting cap 72 is sleeved on the bottom of the connecting post 71, the annular limiting step 711 is in the first U-shaped groove 131, and the connecting cap 72 is in the second U-shaped limiting groove.
[0042] Furthermore, such as Figure 2 , 10 As shown in Figures 12 and 13, in this embodiment, an elastic plate 22 is provided on the first support leg 2, and a limiting protrusion 221 is provided on the elastic plate 22. The limiting protrusion 221 is used to limit the position of the connecting cap 72.
[0043] Furthermore, such as Figure 5 , 12 As shown in ~13, in this embodiment, a pair of first connecting holes 8 are provided on the inner side of the first support leg 2 and the second support leg 3, which are used to connect with the conveyor chain 9. The ends of the connecting shafts 91 at both ends of the chain 9 are respectively inserted into the corresponding first connecting holes 8, so as to connect the chain plates one by one.
[0044] Furthermore, such as Figure 10 As shown, in this embodiment, a limiting groove 23 is provided on the first support leg 2, the limiting groove 23 passes through the first support leg 2, and the second roller 6 is disposed in the limiting groove 23 and protrudes from the limiting groove 23.
[0045] Furthermore, such as Figure 8 As shown, in this embodiment, the first leg 2 is also provided with a second connecting hole 24, the second connecting hole 24 penetrates the limiting groove 23, a connecting pin 241 is inserted into the second connecting hole 24, and the connecting pin 241 penetrates the second roller 6.
[0046] Furthermore, in this embodiment, the first leg 2, the second leg 3, and the support plate 1 are integrally injection molded.
[0047] Working principle:
[0048] First, the first support leg 2, the second support leg 3, and the support plate 1 are integrally injection molded. Then, the first roller 5 is fitted onto the connecting column 71, and the bottom of the connecting column 71 is inserted into the connecting cap 72. Next, the upper end of the connecting column 71 is inserted into the first U-shaped positioning groove, and the connecting cap 72 is inserted into the second U-shaped positioning groove. During this process, the connecting cap 72 presses against the limiting protrusion 221, causing the limiting protrusion 221 to drive the elastic plate 22 to swing downwards. Finally, the connecting cap 72 is positioned in the second U-shaped groove 21, and the upper end of the connecting column 71 is positioned in the first U-shaped groove 131. The limiting protrusion 221 is reset under the elastic force of the elastic plate 22, preventing the connecting cap 72 from detaching from the second U-shaped groove 21. Then, the second roller 6 is placed into the limiting groove 23, and the connecting pin 241 is inserted. Finally, the chain plates are connected one by one using the conveyor chain 9.
[0049] Above, refer to Figures 1-13 The description of the chain plate of the spiral chain according to an embodiment of the present invention shows that the friction between the chain plate and the conveying track is small, and the support tooth 11 can improve its force-bearing capacity by contacting the first connecting groove 12, which greatly extends the service life of a single chain plate.
[0050] It should be noted that, in this specification, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes that element.
[0051] Although the present invention has been described in detail through the above preferred embodiments, it should be understood that the above description should not be considered as a limitation of the present invention. Various modifications and substitutions to the present invention will be apparent to those skilled in the art after reading the above content. Therefore, the scope of protection of the present invention should be defined by the appended claims.
Claims
1. A flight of a screw conveyor, characterized in that Include: A support plate, wherein a plurality of support teeth are provided at the front and rear ends of the support plate, and a first connecting groove is provided between adjacent support teeth; The lower end of the support plate is provided with a first leg and a second leg, and a conveying groove is formed between the first leg and the second leg; A first roller is rotatably disposed between the support plate and the first leg; The second roller is rotatably connected to the first support leg; The axis of the first roller is perpendicular to the axis of the second roller.
2. The flight of a helical chain as defined in claim 1, wherein The first leg and the second leg are L-shaped.
3. The link of the flight of a screw flight according to claim 1, wherein A reinforcing plate is provided at the lower end of the support plate near the first leg, and a first U-shaped groove is provided at the end of the reinforcing plate; a second U-shaped groove is provided at the lower end of the first leg corresponding to the first U-shaped groove.
4. The chain plate of the spiral chain as described in claim 1, characterized in that, It also includes: a connecting post and a connecting cap; the upper end of the connecting post is provided with an annular limiting step, the first roller is sleeved on the connecting post, and the connecting cap is sleeved on the bottom of the connecting post.
5. The flight of a helical chain as defined in claim 4, wherein, The first leg is provided with an elastic plate, and the elastic plate is provided with a limiting protrusion, which is used to limit the position of the connecting cap.
6. The link of the flight of a screw as defined in claim 1, wherein The first leg and the second leg each have a pair of first connecting holes on their inner sides for connecting to the conveyor chain.
7. The link of the flight of a screw flight according to claim 1, wherein The first support leg is provided with a limiting groove, which passes through the first support leg. The second roller is disposed in the limiting groove and protrudes from the limiting groove.
8. The flight of a helical chain as defined in claim 7, wherein, The first leg is also provided with a second connecting hole, which penetrates the limiting groove. A connecting pin is inserted into the second connecting hole, and the connecting pin penetrates the second roller.