Dragging wheel device for heavy chain plate machine
By designing a trolley device for heavy-duty chain conveyors and adopting interference fit bearings and sealing structures, the problem of easy damage to trolleys has been solved, achieving higher load-bearing capacity and stability, and reducing maintenance frequency and costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-02
- Publication Date
- 2026-03-13
AI Technical Summary
The rollers of heavy-duty chain conveyors are prone to damage, leading to unstable equipment operation and increased maintenance frequency and costs.
Design a trolley device for heavy-duty chain conveyors, which uses an interference fit bearing connected to the trolley shaft, and is equipped with an elastic retaining ring and sealing structure to protect the bearing and ensure stable operation of the trolley.
It improved the load-bearing capacity and operational stability of tugboats, reduced maintenance frequency and costs, increased equipment uptime, and saved on spare parts costs.
Smart Images

Figure CN223990500U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of conveying equipment technology, and specifically to a trolley device for heavy-duty chain conveyors. Background Technology
[0002] When using a heavy-duty chain conveyor for feeding, as the equipment operates for many years and the operating time increases, the support rollers of the heavy-duty chain conveyor often become damaged during operation.
[0003] As is well known, the rollers provide support for the entire chain conveyor. If any roller is damaged, the feeder will sink, increasing running resistance. Damaged rollers that do not rotate will cause accelerated wear on the chain plates and chains, reducing their service life. If a roller falls and accidentally lands on the tail sprocket, it will directly cause the tail tensioning device to crack. In some cases, it may even cause the chain conveyor chain to break, resulting in equipment downtime and affecting the normal supply of raw materials to the kiln system.
[0004] Therefore, to address the issue of easily damaged trolleys, it is necessary to design a trolley device for heavy-duty chain conveyors to ensure that the trolleys of heavy-duty chain conveyors are more durable and to avoid frequent damage. Utility Model Content
[0005] The purpose of this utility model is to provide a trolley device for heavy-duty chain conveyors, so as to solve the technical problem of frequent damage to trolleys in existing heavy-duty chain conveyors.
[0006] To achieve the above objectives, the present invention provides the following technical solution:
[0007] This utility model provides a drag wheel device for a heavy-duty chain conveyor, including a drag wheel shaft. A drag chain wheel is mounted on the middle of the drag wheel shaft through two bearings. Both ends of the drag wheel shaft are connected to bearing seats on both sides of the heavy-duty chain conveyor frame. The connection between the drag wheel shaft and the bearing seats is ensured by the drive of a motor to rotate the drag wheel shaft.
[0008] Optionally or preferably, the bearing and the roller shaft are installed with an interference fit.
[0009] Optionally or preferably, the bearing is installed behind the support roller shaft, and an elastic retaining ring is also provided on the outer side of the bearing. The elastic retaining ring is provided to ensure that the bearing on one side will not move out during operation.
[0010] Optionally or preferably, after the drag chain wheel is installed on the support roller shaft, sealing caps are also provided at both outer ends of the drag chain wheel. The sealing caps are provided to ensure that external dust cannot enter the bearing during operation, thus ensuring a clean operating environment for the bearing.
[0011] Optionally or preferably, a felt seal is also provided between the sealing cover and the roller shaft.
[0012] Optionally or preferably, a second elastic retaining ring is also provided between the sealing cover and the drag chain wheel. The second elastic retaining ring is provided to ensure that the bearing on one side will not slip out during operation.
[0013] In this invention, two bearings must be used, located on either side of the middle of the roller shaft. This arrangement increases the load-bearing capacity of the roller and enables the chain conveyor to operate stably.
[0014] Based on the above technical solution, the embodiments of this utility model can produce at least the following technical effects:
[0015] The towing wheel device for heavy-duty chain conveyors provided by this utility model has a stronger load-bearing capacity and higher operational stability, reduces the labor intensity of maintenance workers, and reduces the frequency of accidents caused by towing wheel damage.
[0016] The towing device for heavy-duty chain conveyors provided by this utility model, after practical application, increases the annual equipment operating rate by about 5%, saves spare parts costs of 74,800 yuan, and can reduce the maintenance costs of enterprises. Attached Figure Description
[0017] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art 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 structures shown in these drawings without creative effort.
[0018] Figure 1 This is a structural schematic diagram of an embodiment of the present utility model;
[0019] Figure 2 This is a schematic diagram of the structure of the drag chain wheel according to an embodiment of the present invention;
[0020] Figure 3 This is a schematic diagram of the structure of the haul wheel shaft according to an embodiment of the present invention;
[0021] Figure 4 This is a schematic diagram of the structure of the sealing cap according to an embodiment of the present invention;
[0022] In the diagram: 1. Drag wheel shaft; 2. Elastic retaining ring 2; 3. Drag chain wheel; 4. Bearing; 5. Sealing cover; 6. Felt seal; 7. Elastic retaining ring 1. Detailed Implementation
[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present utility model.
[0024] In the description of this application, 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, and are only for the convenience of describing this application and 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, and therefore should not be construed as a limitation on this application; the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; furthermore, unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly, for example, they can be fixed connections, detachable connections, or integral connections; they can be mechanical connections; they can be direct connections or indirect connections through an intermediate medium; they can be internal connections between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.
[0025] Example 1
[0026] like Figure 1-4 As shown, this utility model provides a drag wheel device for a heavy-duty chain conveyor, including a drag wheel shaft 1. A drag chain wheel 3 is mounted on the middle of the drag wheel shaft 1 through two bearings 4. The two ends of the drag wheel shaft 1 are respectively connected to the bearing seats on both sides of the heavy-duty chain conveyor frame. The connection between the drag wheel shaft 1 and the bearing seats is ensured by the motor to rotate the drag wheel shaft 1.
[0027] In this embodiment, the bearing 4 and the support roller shaft 1 are installed with an interference fit.
[0028] In this embodiment, the bearing 4 is installed behind the support roller shaft 1, and an elastic retaining ring 7 is also provided on the outside of the bearing 4.
[0029] In this embodiment, after the drag chain wheel 3 is installed on the support roller shaft 1, sealing covers 5 are also provided at both ends of the outer side of the drag chain wheel 3.
[0030] In this embodiment, a felt seal 6 is also provided between the sealing cover 5 and the roller shaft 1.
[0031] In this embodiment, an elastic retaining ring 2 is also provided between the sealing cover 5 and the drag chain wheel 3.
[0032] In this embodiment, the specific working process of the tow wheel device is as follows: the tow wheel is installed below the chain of the plate feeder, supporting the chain. The head drive device of the plate feeder drives the chain to run, and the friction between the chain and the tow wheel device drives the tow wheel device to run.
[0033] Economic benefits of using the towing device for heavy-duty chain conveyors provided in this utility model:
[0034] During maintenance in early 2022, all support roller structures of the chain conveyor were modified and replaced. A comparison of the chain support rollers and other components in terms of spare parts costs and equipment uptime is as follows:
[0035] 1. The total cost of spare parts for the rollers in 2021 was RMB 96,400, and the cost of the conveyor troughs was RMB 52,000, totaling RMB 148,400. The operating rate of the plate feeder in 2021 was 95.6%.
[0036] 2. The total cost of spare parts for tugboats in 2022 was RMB 49,600, and the cost of conveyor troughs was RMB 24,000, for a total of RMB 73,600. The plate feeder operating rate was 100% in 2022.
[0037] After the replacement, the annual equipment uptime increased by about 5%, and spare parts costs were reduced by 74,800 yuan.
[0038] It is evident that the tugboat of this invention has a stronger load-bearing capacity and higher operational stability, reduces the labor intensity of maintenance workers, and lowers the frequency of accidents caused by tugboat damage.
[0039] The structures, functions, and connection forms disclosed herein can be implemented in other ways. For example, the embodiments described above are merely illustrative; multiple components may be combined or integrated into another component. Furthermore, the functional components in the various embodiments herein may be integrated into one functional component, or each functional component may exist physically separately, or two or more functional components may be integrated into one functional component.
[0040] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several modifications and improvements can be made without departing from the inventive concept of the present utility model, and these all fall within the protection scope of the present utility model.
Claims
1. A tug device for a heavy-duty catwalk machine, characterized in that, The application relates to a heavy chain plate machine, which comprises a supporting wheel shaft (1), a drag chain wheel (3) is arranged in the middle of the supporting wheel shaft (1) through two bearings (4), the two ends of the supporting wheel shaft (1) are respectively connected with bearing seats on the two sides of the frame of the heavy chain plate machine, and the connection between the supporting wheel shaft (1) and the bearing seat ensures the rotation of the supporting wheel shaft (1) under the driving of a motor.
2. The tug device for a heavy-duty catwalk machine according to claim 1, characterized in that, The bearing (4) is arranged in interference fit with the supporting wheel shaft (1).
3. The tug device for heavy catwalk machines according to claim 1, characterized in that, The bearing (4) is arranged behind the supporting wheel shaft (1), and an elastic baffle ring I (7) is further arranged outside the bearing (4).
4. The tug device for heavy catwalk machines according to claim 1, characterized in that, After the drag chain wheel (3) is arranged on the supporting wheel shaft (1), sealing covers (5) are further arranged at the two ends outside the drag chain wheel (3).
5. The tug device for heavy catwalk machines according to claim 4, characterized in that Felt seals (6) are further arranged between the sealing covers (5) and the supporting wheel shaft (1).
6. The tug device for heavy catwalk machines according to claim 4, characterized in that Elastic baffle rings II (2) are further arranged between the sealing covers (5) and the drag chain wheel (3).