Anti-drop sprocket chain assembly

Abstract

The utility model discloses a kind of tooth chain assembly of preventing falling off, belong to transmission technical field, solve the technical problem that the existing sprocket cannot buffer impact load due to rigid tooth surface, prone to cause chain stress concentration, violent vibration and then cause tooth falling off, technical solution main point: including driving shaft, driven shaft, driving shaft and driven shaft outer wall are fixedly sleeved sprocket, transmission connection chain between two sprockets;Sprocket includes sprocket main body, installation hole is equipped in sprocket main body center, key groove is equipped in installation hole inner wall, the outer wall is integrally formed with a plurality of evenly distributed gear teeth, arc-shaped guide surface is equipped in gear tooth two sides, guide surface integrally formed anti-skid boss, sprocket main body side is penetrated and is set with a plurality of annular distribution elastic grooves, buffer block is fixed in elastic groove by glue, in the utility model, elastic groove allows gear tooth to produce slight angular displacement deformation, buffer block can absorb impact energy, anti-skid boss increases static friction to prevent chain link slip, jointly reduce the possibility of tooth falling off.

Description

Technical Field

[0001] This utility model relates to the field of mechanical transmission technology, and in particular to an anti-tooth-loosening chain assembly. Background Technology

[0002] Chain drive is a widely used mechanical transmission method with advantages such as simple structure, constant transmission ratio, high load-bearing capacity, and suitability for long-distance transmission. However, during operation, the chain may experience "tooth slippage," where the chain jumps out of the sprocket teeth, resulting in abnormal engagement or complete disengagement from the sprocket.

[0003] Under current technological conditions, common sprockets adopt a rigid tooth surface design. When the transmission system is subjected to pulsating or impact loads, the rigid tooth surface cannot effectively buffer and disperse the impact energy, causing the impact force to be directly transmitted to the chain pin. This results in local stress concentration and uneven load distribution in the chain, and triggers severe vibration, which is the key physical cause of chain tooth breakage.

[0004] Therefore, we propose an anti-tooth-loosening chain assembly. Utility Model Content

[0005] The purpose of this utility model is to address the shortcomings of existing technologies by proposing an anti-tooth-loosening chain assembly.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: An anti-loosening chain assembly includes: A drive shaft and a driven shaft, both of which have sprockets fixedly fitted on their outer walls, and a chain connecting the two sprockets; The sprocket includes a sprocket body, a mounting hole at the center of the sprocket body, a keyway on the inner wall of the mounting hole, and multiple evenly distributed teeth integrally formed on the outer wall of the sprocket body. Both sides of the teeth are provided with arc-shaped guide surfaces, and one side of the guide surface is integrally formed with an anti-slip protrusion. The sprocket body has multiple ring-shaped elastic grooves through one side. Buffer blocks are fixed in the elastic grooves with glue, and the buffer blocks are interference-fitted with the inner wall of the elastic grooves.

[0007] In one possible design, the bottom of the elastic groove has two symmetrically arranged positioning grooves, and the bottom of the buffer block has two symmetrically arranged positioning blocks integrally formed, with the positioning blocks and positioning grooves being compatible.

[0008] In one possible design, the elastic groove is set to be arc-shaped or U-shaped.

[0009] In one possible design, the buffer block is made of nitrile rubber.

[0010] In one possible design, the buffer block has multiple grooves on both its surface and bottom.

[0011] In one possible design, the anti-slip bumps are set in a diamond shape.

[0012] Beneficial effects: In this utility model, the anti-tooth-loosening chain assembly, through the setting of structures such as elastic grooves and buffer blocks, allows the teeth to undergo slight elastic bending deformation when the chain is subjected to impact load, physically absorbing the impact energy, thereby reducing the possibility of chain tooth derailment; In this utility model, the anti-tooth-loosening chain assembly, through the setting of anti-slip protrusions and other structures, the anti-slip protrusion texture on both sides of the wheel teeth increases the local static friction force, preventing the chain links from physically slipping at the moment of meshing, which can further reduce the possibility of chain tooth derailment. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall three-dimensional structure of an anti-tooth-loosening chain assembly proposed in this utility model; Figure 2 This is a schematic diagram of the sprocket structure of an anti-tooth-loosening chain assembly proposed in this utility model; Figure 3 This is a schematic diagram of the buffer block structure of an anti-tooth-loosening chain assembly proposed in this utility model.

[0014] In the diagram: 1. Drive shaft; 2. Driven shaft; 3. Sprocket; 4. Chain; 5. Sprocket body; 6. Mounting hole; 7. Keyway; 8. Gear tooth; 9. Guide surface; 10. Anti-slip protrusion; 11. Elastic groove; 12. Positioning groove; 13. Buffer block; 14. Positioning block; 15. Groove. Detailed Implementation

[0015] 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.

[0016] In one embodiment: Refer to Figures 1-3 A chain assembly for preventing tooth slippage includes: a drive shaft 1 and a driven shaft 2, which are arranged in parallel. Both drive shaft 1 and driven shaft 2 are fixedly fitted with sprockets 3 on their outer walls. The two sprockets 3 are connected by a chain 4. The chain links of the chain 4 mesh with the teeth 8 of the sprockets 3 to form a complete transmission link.

[0017] The sprocket 3 includes a sprocket body 5, which is a disc-shaped structure with a mounting hole 6 at its center. The diameter of the mounting hole 6 matches the diameter of the drive shaft 1 and the driven shaft 2, ensuring that the sprocket body 5 can be tightly fitted onto the shafts. A keyway 7 is formed on the inner wall of the mounting hole 6, which engages with a key structure on the shaft to achieve circumferential fixation of the sprocket body 5 with the drive shaft 1 and the driven shaft 2, preventing relative rotation and ensuring reliable power transmission. The outer wall of the sprocket body 5 is integrally formed with multiple evenly distributed teeth 8. The number of teeth 8 is set according to transmission requirements, and the tooth groove size between two adjacent teeth 8 matches the chain link size of the chain 4, ensuring smooth meshing. Both sides of the teeth 8 have arc-shaped guide surfaces 9, which smoothly transition from the root to the top of the teeth 8, guiding the chain 4 during meshing and facilitating the rapid and accurate entry of the chain links into the tooth grooves. One side of the guide surface 9 is integrally formed with anti-slip protrusions 10. The anti-slip protrusions 10 are set in a rhombus shape. Multiple anti-slip protrusions 10 are evenly distributed on the guide surface 9 to form an uneven contact surface.

[0018] Multiple annularly distributed elastic grooves 11 are provided through one side of the sprocket body 5. The elastic grooves 11 can be arc-shaped or U-shaped. The multiple elastic grooves 11 are evenly distributed around the mounting hole 6, and the spacing between two adjacent elastic grooves 11 is equal, so that the force on the sprocket body 5 is more even. A buffer block 13 is fixed in the elastic groove 11 with glue. The buffer block 13 is made of nitrile rubber. Nitrile rubber has good elasticity, wear resistance and oil resistance, which can meet the needs of buffering and shock absorption. Two symmetrically arranged positioning grooves 12 are provided at the bottom of the elastic groove 11. Two symmetrically arranged positioning blocks 14 are integrally formed at the bottom of the buffer block 13. The positioning blocks 14 and the positioning grooves 12 are adapted to each other. When installing the buffer block 13, the positioning blocks 14 are embedded in the positioning grooves 12, which can realize the rapid positioning of the buffer block 13. At the same time, it enhances the connection stability between the buffer block 13 and the elastic groove 11 and prevents the buffer block 13 from shifting during the force process. For harsh working environments such as dust and debris, a dust cover plate is detachably installed on the outer side of the sprocket body 5 corresponding to the elastic groove 11.

[0019] This application can be used in the field of mechanical transmission, or in other fields applicable to this application.

[0020] In another embodiment: an anti-tooth-loosening chain assembly, applied in the field of mechanical transmission, has a structure that is basically the same as the aforementioned embodiments, the difference being: In another aspect of this embodiment, the surface and bottom of the buffer block 13 are provided with a plurality of grooves 15. The grooves 15 can further enhance the elastic deformation capability of the buffer block 13, enhance the buffering effect, and provide a space for the glue to be contained, making it convenient to install and fix the buffer block 13.

[0021] Usage Procedure: First, apply glue to the contact surface between the buffer block 13 and the elastic groove 11. Align the positioning block 14 of the buffer block 13 with the positioning groove 12 at the bottom of the elastic groove 11, and place the buffer block 13 into the elastic groove 11. After the glue cures, the buffer block 13 is fixedly connected to the sprocket body 5. Next, fit the sprocket body 5 onto the drive shaft 1 and driven shaft 2 through the mounting holes 6, so that the key structure on the shaft is embedded in the keyway 7 on the inner wall of the mounting holes 6, thus achieving a fixed assembly of the sprocket 3 with the drive shaft 1 and driven shaft 2. Finally, wrap the chain 4 around the teeth 8 of the two sprockets 3, ensuring accurate meshing between the chain links and the teeth 8, completing the assembly of the entire anti-tooth-loosening chain assembly.

[0022] During operation, the rotation of the drive shaft 1 drives the corresponding sprocket 3 to rotate. Through the transmission action of the chain 4, the sprocket 3 on the driven shaft 2 rotates synchronously, realizing the transmission of power. When the chain 4 is subjected to an impact load pressing against the tooth 8, the elastic groove 11 on the sprocket body 5 allows the tooth 8 to undergo a slight elastic bending deformation. At the same time, the buffer block 13 in the elastic groove 11 undergoes elastic deformation under compression. The deformation of the elastic groove 11 and the elastic deformation of the buffer block 13 together physically absorb the impact energy, effectively reducing the impact load on the meshing point of the chain 4 and the tooth 8, thereby reducing the possibility of the chain 4 derailing. Meanwhile, the diamond-shaped anti-slip protrusions 10 on the guide surfaces 9 on both sides of the tooth 8 can increase the local static friction between the tooth 8 and the chain link of the chain 4. At the moment of meshing between the chain 4 and the tooth 8, it can effectively prevent the chain link from physically slipping, further reducing the possibility of the chain 4 derailing.

[0023] The elastic groove 11 adopts an arc or U-shaped structure, which enables a more uniform stress distribution on the sprocket body 5, avoids stress concentration that could damage the sprocket body 5, and improves the overall structural strength of the sprocket 3. The mating structure between the positioning block 14 and the positioning groove 12 ensures accurate positioning of the buffer block 13 during assembly, while also guaranteeing the positional accuracy of the buffer block 13 after assembly, thus ensuring the stability of the buffering effect. The nitrile rubber buffer block 13 has good oil resistance and wear resistance, making it suitable for various working environments and further enhancing the applicability of the entire chain assembly.

[0024] During long-term use, the meshing point between the chain 4 and the sprocket 3 of this device needs to be lubricated regularly, and the sealing performance of the dust cover and the fixed status of the buffer block 13 should be checked regularly. If the buffer block 13 is found to be aged, detached, or has too much dust accumulated in the elastic groove 11, it should be replaced or cleaned in time to ensure the anti-tooth-dislodging performance and transmission reliability of the device.

[0025] The accompanying drawings in this application are for illustrative purposes only. The dimensions and shapes of the components shown are not actual limitations but are merely schematic representations. In actual implementation, the components can be reasonably configured and adjusted according to specific needs and actual conditions.

[0026] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A chain assembly for preventing tooth slippage, characterized in that, include: The driving shaft (1) and the driven shaft (2) are provided with sprockets (3) fixedly sleeved on the outer walls of the driving shaft (1) and the driven shaft (2), and a chain (4) is connected between the two sprockets (3). The sprocket (3) includes a sprocket body (5), a mounting hole (6) is provided at the center of the sprocket body (5), a keyway (7) is provided on the inner wall of the mounting hole (6), and a plurality of evenly distributed gear teeth (8) are integrally formed on the outer wall of the sprocket body (5). Arc-shaped guide surfaces (9) are provided on both sides of the gear teeth (8), and an anti-slip protrusion (10) is integrally formed on one side of the guide surface (9). The sprocket body (5) has multiple ring-shaped elastic grooves (11) through one side. A buffer block (13) is fixed in the elastic groove (11) by glue, and the buffer block (13) is interference-fitted with the inner wall of the elastic groove (11).

2. The anti-tooth-detachment chain assembly according to claim 1, characterized in that, The bottom of the elastic groove (11) has two symmetrically arranged positioning grooves (12), and the bottom of the buffer block (13) has two symmetrically arranged positioning blocks (14) integrally formed. The positioning blocks (14) and the positioning grooves (12) are compatible.

3. The anti-tooth-detachment chain assembly according to claim 2, characterized in that, The elastic groove (11) is configured as an arc or a U-shape.

4. The anti-tooth-detachment chain assembly according to claim 3, characterized in that, The buffer block (13) is made of nitrile rubber.

5. The anti-tooth-detachment chain assembly according to claim 4, characterized in that, The buffer block (13) has multiple grooves (15) on its surface and bottom.

6. The anti-tooth-detachment chain assembly according to claim 5, characterized in that, The anti-slip protrusion (10) is set in a rhombus shape.

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