A slide rail rotating disc for quenching of sprocket inner hole
By designing a slide rail rotary disk to achieve precise positioning and fixation of the sprocket's inner perforation, the problem of unstable fixation during quenching is solved, thus improving quenching quality and service life.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- QINGDAO ZHENGHE CHAIN TRANSMISSION CO LTD
- Filing Date
- 2025-07-31
- Publication Date
- 2026-07-24
AI Technical Summary
The existing sprocket's internal perforation is unstable during the quenching process, resulting in uneven hardness and hardened layer thickness, which affects its service life.
Design a slide rail rotary disk for quenching the inner hole of a sprocket, including a rotary disk body, a sprocket fixing disk, a guide rail, a sliding component, a driving component, and a sprocket limiting component, to achieve precise positioning and fixing of the sprocket and ensure the stability of the quenching process.
This improved the quality of quenching the inner perforations of the sprocket, enhancing the stability and lifespan of the sprocket in harsh environments.
Smart Images

Figure CN224548471U_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of sprocket manufacturing equipment technology, specifically to a slide rail rotary disk for quenching the inner perforation of a sprocket. Background Technology
[0002] Currently, high-hardness internal splined sprockets are commonly used in the agricultural equipment baling industry. These machines require significant torque when baling corn, wheat, hay, and other plants, and the working environment of balers is often harsh, frequently encountering hard plants or gravel in the soil. Therefore, the internal splined grooves (splines) of the sprockets are required to have high strength and uniform surface hardness.
[0003] Equipment manufacturers typically design the hardness of the sprocket's inner perforation to be around HRC40-55, and also have certain requirements for the depth of the hardened layer. These two requirements dictate that the sprocket must be stably fixed during quenching of the inner perforation to ensure that uneven hardness or hardened layer thickness does not occur due to unstable sprocket fixation during high-frequency quenching. If the surface hardness of the inner perforation fluctuates, and the hardened layer varies in depth, the hardened layer of the sprocket's inner perforation will quickly fail during use, thus affecting the sprocket's service life. Utility Model Content
[0004] This invention discloses a slide rail rotary disk for quenching the inner perforation of a sprocket, with the aim of solving the problems existing in the prior art mentioned in the background section.
[0005] To achieve the above objectives, the technical solution of this invention is as follows:
[0006] A sliding rail rotary disk for quenching the inner hole of a sprocket includes: a rotary disk body, the rotary disk body including a base and a sprocket fixing disk disposed above the base, the bottom of the sprocket fixing disk being fixedly connected to the base by a connector, multiple guide rails being equally spaced around an axis on the sprocket fixing disk, a sliding component being disposed within the guide rail, the sliding component being connected to a driving component, the driving component being connected to the base and used to drive the sliding component to move along the guide rail, and a sprocket limiting component being disposed at the top of the sliding component.
[0007] Preferably, the base includes a circular base plate and a baffle plate surrounding the top edge of the circular base plate, the baffle plate being fixedly connected to the circular base plate; the sprocket fixing plate is located above the circular base plate and is coaxial with the circular base plate; the connecting member consists of multiple support columns connected between the bottom end of the sprocket fixing plate and the top end of the circular base plate.
[0008] Preferably, there are three guide rails, which are arranged at 120° intervals along the radial direction of the sprocket fixing disc. The length of the guide rails is sufficient to accommodate sprockets of various diameters.
[0009] Preferably, the guide rail is a straight through groove passing through the upper and lower end faces of the sprocket fixing plate, the outer end of the straight through groove passing through the edge of the sprocket fixing plate, the sliding component includes a slider slidably connected to the straight through groove, a roller is installed at the bottom end of the slider, the roller is in rolling engagement with the upper surface of the circular base plate, and limiting plates for sliding engagement with the lower surface of the sprocket fixing plate are fixedly connected to both sides of the outer surface of the slider.
[0010] Preferably, the drive assembly includes a threaded rod that passes radially through the baffle and is screwed to the baffle. The outer wall of the slider is provided with a joint. A thrust bearing is detachably connected between the inner end of the threaded rod and the joint. The end of the threaded rod located outside the baffle is provided with a handle. By rotating the threaded rod, the slider moves inward or outward along the guide rail.
[0011] Preferably, the sprocket limiting assembly includes a limiting block for engaging with the tooth groove of the sprocket, the bottom end of the limiting block is provided with a stud, the stud engaging with a threaded hole pre-set at the top of the slider; the limiting block is available in various models according to the size of the sprocket tooth groove.
[0012] Preferably, the top of the limiting block is also fixedly connected to a pressure plate for engaging with the outer surface of the sprocket teeth.
[0013] Preferably, an inspection port is formed between the edge of the sprocket fixing disc and the inner surface of the baffle.
[0014] The novel slide rail rotary disk for quenching the inner perforation of sprockets has the following beneficial effects:
[0015] This new invention achieves precise positioning and fixation of the sprocket on the sprocket fixing plate, which can ensure the stability of the sprocket during high-frequency quenching, thereby helping to improve the quenching quality of the inner perforation, enabling it to fully meet the harsh operating environment of the baler and extend the service life of the sprocket. Attached Figure Description
[0016] Figure 1 This is a top view of the new type of fixed sprocket.
[0017] Figure 2 This is a top view of the mating structure between the base and the sprocket fixing disc.
[0018] Figure 3 This is a cross-sectional view of the mating structure between the base and the sprocket fixing disc.
[0019] Figure 4 This is a structural diagram showing the cooperation between the sliding component, the sprocket limiting component, and the drive component.
[0020] Figure 5 This is a front view schematic diagram of the sliding component, the sprocket limiting component, and the guide rail in operation.
[0021] The markings in the diagram are: 1. Base; 2. Sprocket fixing plate; 3. Drive assembly; 31. Threaded rod; 32. Thrust bearing; 33. Handle; 4. Baffle; 5. Sliding assembly and sprocket limiting assembly; 51. Limiting block; 52. Pressure plate; 53. Slider; 54. Limiting plate; 55. Roller; 56. Stud; 6. Sprocket; 7. Support column; 8. Guide rail; 9. Inspection port. Detailed Implementation
[0022] The following is a detailed description of the embodiments of the present invention in a step-by-step manner. This description is only a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.
[0023] In the description of this invention, it should be noted that the terms "upper," "lower," "left," "right," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or a specific orientational structure and operation. Therefore, they should not be construed as limitations on this invention.
[0024] Example 1:
[0025] A sliding rail rotary disk for quenching the inner perforation of a sprocket, such as Figure 1-5 As shown, it includes: a rotating disk body, the rotating disk body including a base 1 and a sprocket fixing disk 2 disposed above the base 1, the bottom of the sprocket fixing disk 2 being fixedly connected to the base 1 by a connector, multiple guide rails 8 being provided at equal intervals around the axis on the sprocket fixing disk 2, a sliding component being provided in the guide rail 8, the sliding component being connected to a drive component 3, the drive component 3 being connected to the base 1 and used to drive the sliding component to move along the guide rail 8, and a sprocket limiting component being provided at the top of the sliding component.
[0026] In this embodiment, the rotating disk and the sprocket fixing disk form an integral structure. During use, it is fixed on a high-frequency quenching rotating table, driving the sprocket fixed on the sprocket fixing disk to rotate synchronously and uniformly. Simultaneously, the inner perforation of the sprocket is quenched using a high-frequency quenching device. This novel design, by setting multiple guide rails 8, sliding components, and sprocket limiting components, can achieve the fixing of sprockets of various diameters.
[0027] Example 2:
[0028] Based on Example 1, such as Figure 1-5As shown, the base 1 includes a circular base plate and a baffle plate surrounding the top edge of the circular base plate, the baffle plate being fixedly connected to the circular base plate; the sprocket fixing plate 2 is located above the circular base plate and is coaxial with the circular base plate; the connecting member is a plurality of support columns 7 connected between the bottom end of the sprocket fixing plate 2 and the top end of the circular base plate.
[0029] like Figure 1 , 2 As shown, there are 3 guide rails 8, which are arranged at 120° intervals along the radial direction of the sprocket fixing plate 2. The length of the guide rails is sufficient to accommodate sprockets 6 of various diameters.
[0030] Example 3:
[0031] Based on Example 2, such as Figure 2 As shown, the guide rail 8 is a straight through groove passing through the upper and lower end faces of the sprocket fixing disc 2, and the outer end of the straight through groove penetrates the edge of the sprocket fixing disc 2, as shown. Figure 4 , 5 As shown, the sliding assembly includes a slider 53 (preferably a cubic slider) that is slidably connected to the straight through groove. A roller 55 is installed at the bottom end of the slider 53. The roller 55 rolls with the upper surface of the circular base plate. Limiting plates 54 for sliding with the lower surface of the sprocket fixing plate 2 are fixedly connected to both sides of the outer surface of the slider 53.
[0032] Example 4:
[0033] Based on Example 3, such as Figure 4 , 5 As shown, the drive assembly includes a threaded rod 31 that passes radially through the baffle and is screwed to the baffle. The outer wall of the slider 53 is provided with a joint (not shown in the figure). A thrust bearing 32 is detachably connected between the inner end of the threaded rod 31 and the joint. The end of the threaded rod 31 located outside the baffle is provided with a handle 33. When the threaded rod is rotated, the slider moves inward or outward along the guide rail 8.
[0034] like Figure 1 , 4 As shown in Figure 5, the sprocket limiting assembly includes a limiting block 51 for engaging with the tooth groove of the sprocket 6. The bottom end of the limiting block 51 is provided with a stud 56, which engages with a screw hole pre-set at the top of the slider 53. The limiting block is available in various models according to the size of the sprocket tooth groove.
[0035] like Figure 1 , 2 As shown in Figure 5, the top of the limiting block 51 is also fixedly connected to a pressure plate 52 for engaging with the outer surface of the teeth of the sprocket 6.
[0036] In this embodiment, in order to fix various types of sprockets, the limiting blocks are provided in various models according to the size of the sprocket tooth groove. When it is necessary to fix different types of sprockets, since the tooth groove size is different, if the limiting block does not match it, it is easy to cause the sprocket to wobble. Therefore, before fixing the sprocket, the appropriate limiting block should be selected according to the sprocket model. The pressure plate is used to press on the upper surface of the sprocket teeth, and its bottom shape can also be made to have the same tilt angle as the teeth, so as to achieve a more stable fit when pressing the teeth.
[0037] Example 5:
[0038] Based on Example 4, such as Figure 1 As shown, the edge of the sprocket fixing disc 2 and the inner surface of the baffle form an inspection port. In case of failure, the sliding component and the sprocket limiting component can be pulled out from the guide rail by rotating the threaded rod and placed in the inspection port position for disassembly, repair or replacement of the damaged parts.
[0039] In use, the sprocket is placed flat on top of the sprocket fixing plate. Then, the three threaded rods are rotated to drive the three sets of sliding components to move inward by the same length (for convenience, scale lines can be set on the surface of the sprocket fixing plate on both sides of the guide rail). The sprocket is fixed by the sprocket limiting components. On the one hand, the limiting blocks press the sprocket tooth grooves tightly, and on the other hand, the pressure plate presses on the upper surface of the teeth. Due to the action of the limiting plate and the pressure plate, the longitudinal movement of the sprocket is restricted. Due to the limiting of multiple limiting blocks, the horizontal movement of the sprocket is restricted, thereby achieving precise positioning and fixing of the sprocket on the sprocket fixing plate.
Claims
1. A slide rail rotary disk for quenching the inner perforation of a sprocket, characterized in that, include: The rotating disk body includes a base and a sprocket fixing disk disposed above the base. The bottom of the sprocket fixing disk is fixedly connected to the base by a connector. Multiple guide rails are equally spaced around the axis on the sprocket fixing disk. A sliding component is provided in the guide rail. The sliding component is connected to a driving component. The driving component is connected to the base and is used to drive the sliding component to move along the guide rail. A sprocket limiting component is provided on the top of the sliding component.
2. The slide rail rotary disk for quenching the inner perforation of a sprocket as described in claim 1, characterized in that, The base includes a circular base plate and a baffle plate surrounding the top edge of the circular base plate, the baffle plate being fixedly connected to the circular base plate; the sprocket fixing plate is located above the circular base plate and is coaxial with the circular base plate; the connecting member consists of multiple support columns connected between the bottom end of the sprocket fixing plate and the top end of the circular base plate.
3. The slide rail rotary disk for quenching the inner hole of a sprocket as described in claim 2, characterized in that there are 3 guide rails, the 3 guide rails are arranged at a radial interval of 120° along the sprocket fixing disk, and the length of the guide rails is sufficient to accommodate sprockets of various diameters.
4. A slide rail rotary disk for quenching the inner perforation of a sprocket as described in claim 3, characterized in that, The guide rail is a straight through groove that runs through the upper and lower end faces of the sprocket fixing plate. The outer end of the straight through groove passes through the edge of the sprocket fixing plate. The sliding component includes a slider that is slidably connected to the straight through groove. A roller is installed at the bottom end of the slider. The roller rolls in cooperation with the upper surface of the circular base plate. Limiting plates for sliding cooperation with the lower surface of the sprocket fixing plate are fixedly connected to both sides of the outer surface of the slider.
5. A slide rail rotary disk for quenching the inner hole of a sprocket as described in claim 4, characterized in that the driving assembly includes a threaded rod that passes through a baffle radially and is screwed to the baffle; a joint is provided on the outer wall of the slider; a thrust bearing is detachably connected between the inner end of the threaded rod and the joint; a handle is provided at the end of the threaded rod located outside the baffle; rotating the threaded rod causes the slider to move inward or outward along the guide rail.
6. The slide rail rotary disk for quenching the inner perforation of a sprocket as described in claim 5, characterized in that, The sprocket limiting assembly includes a limiting block for engaging with the tooth grooves of the sprocket. The bottom end of the limiting block is provided with a stud, which engages with a threaded hole pre-set at the top of the slider. The limiting block is available in various models according to the size of the sprocket tooth grooves.
7. A slide rail rotary disk for quenching the inner perforation of a sprocket as described in claim 6, characterized in that, The top of the limiting block is also fixedly connected to a pressure plate for engaging with the outer surface of the sprocket teeth.
8. A slide rail rotary disk for quenching the inner perforation of a sprocket as described in claim 7, characterized in that, An inspection port is formed between the edge of the sprocket fixing disc and the inner surface of the baffle.