Damping device of harvester

Abstract

The utility model relates to the field of harvester accessories, and discloses a harvester damping device. The utility model relates to an anti-leakage pipe which comprises an inner pipe, a rubber sleeve and an outer pipe, the inner pipe is sleeved with the rubber sleeve, the rubber sleeve is sleeved with the outer pipe, honeycomb holes are formed in one axial end of the rubber sleeve, the honeycomb holes extend and are distributed in the circumferential direction of the rubber sleeve, the honeycomb holes penetrate through the rubber sleeve in the axial direction of the rubber sleeve, a fluorocarbon coating is sprayed on the outer circumferential wall of the rubber sleeve, and a blocking clamping ring is formed on the outer wall of the rubber sleeve. The two blocking clamping rings are arranged in a spaced mode and distributed in the axial direction of the rubber sleeve in a spaced mode, the fluorocarbon coating is located between the two blocking clamping rings, two matching ring grooves are formed in the inner wall of the outer pipe in a spaced mode, and the two blocking clamping rings are inserted into the two matching ring grooves respectively. The damping effect of the damping device can be improved; the service life of the damping device is prolonged.

Description

Technical Field

[0001] This utility model relates to the technical field of harvester accessories, and more specifically, to a harvester shock absorption device. Background Technology

[0002] Harvesters typically install shock absorbers on parts such as the rocker arm to reduce vibration and noise. Chinese invention patent application CN109968934 A discloses a shock absorber bushing, which includes a bushing tube, an intermediate spacer sleeved on the bushing tube, and an outer sleeve sleeved on the intermediate spacer sleeve. The intermediate spacer sleeve consists of two solid rubber rings, thus achieving a shock absorption effect through the rubber rings. However, the solid rubber rings lack internal deformation space under pressure, resulting in relatively weak deformation capacity, poor shock absorption, and a tendency to crack, thus affecting service life. Utility Model Content

[0003] To address at least one of the aforementioned problems, this utility model provides a harvester vibration damping device, comprising an inner tube, a rubber sleeve, and an outer tube. The rubber sleeve is fitted onto the inner tube, and the outer tube is fitted onto the rubber sleeve. One axial end of the rubber sleeve has honeycomb holes extending circumferentially along the rubber sleeve and penetrating the rubber sleeve axially. Both the inner tube and the outer tube are interference-fitted with the rubber sleeve. The outer peripheral wall of the rubber sleeve is coated with a fluorocarbon coating. The outer wall of the rubber sleeve is formed with two retaining rings spaced apart. The two retaining rings are spaced apart axially along the rubber sleeve, and the fluorocarbon coating is located between the two retaining rings. The inner wall of the outer tube has two mating ring grooves spaced apart, and the two retaining rings are respectively inserted into the two mating ring grooves.

[0004] Optionally, a rubber thickening ring is snapped into the rubber sleeve, and the position of the rubber thickening ring within the rubber sleeve can be adjusted by moving along the axial direction of the rubber sleeve.

[0005] Optionally, the outer edges at both ends of the rubber sleeve are rounded.

[0006] Optionally, the rubber sleeve is completely located inside the outer tube, and both ends of the outer tube are machined with constricted ends so that the inner diameter of both ends of the outer tube is smaller than the outer diameter of the rubber sleeve.

[0007] Optionally, the inner tube is provided with rubber shielding rings, and two rubber shielding rings are provided, which are respectively located at both ends of the rubber sleeve to shield the openings of the honeycomb holes.

[0008] Optionally, the rubber shielding ring and the end of the rubber sleeve are arranged at intervals.

[0009] Optionally, the outer wall of the inner tube is provided with an outer annular groove, and the inner side of the rubber shielding ring is inserted into the outer annular groove.

[0010] Optionally, the outer tube is provided with a insertion ring groove, and the outer side of the rubber shielding ring is inserted into the insertion ring groove.

[0011] Optionally, the outer wall of the rubber thickening ring is provided with a snap-fit ​​protrusion, and the inner wall of the rubber sleeve is provided with a snap-fit ​​groove. Multiple snap-fit ​​grooves are spaced apart along the axial direction of the rubber sleeve, and the snap-fit ​​protrusion is adapted to snap into any one of the snap-fit ​​grooves.

[0012] Optionally, the inner edge of the end of the rubber thickening ring is provided with a chamfer.

[0013] Compared with the prior art, the beneficial technical effects of this utility model are as follows:

[0014] 1. When the rubber sleeve is impacted or squeezed, it can mitigate the impact force and improve the shock absorption effect by expanding and contracting the honeycomb pores.

[0015] 2. The inner and outer tubes protect the rubber sleeve, preventing it from corroding faster due to prolonged exposure to air, thus extending the service life of the shock absorber.

[0016] 3. When the rubber sleeve with large interference fit is pressed into the outer tube, the fluorocarbon coating can act as a lubricant to ensure that the rubber sleeve is not damaged due to pressing. In addition, under extreme overload conditions, the rubber sleeve of the shock-absorbing device can rotate slightly between the rubber sleeve and the outer tube to prevent the rubber sleeve from tearing, thereby improving its service life.

[0017] 4. The retaining ring can act as a barrier and seal, preventing dust from entering the fluorocarbon coating and damaging it, thus affecting the lubrication effect.

[0018] 5. In different usage scenarios, the shock absorption device may experience greater or more concentrated stress in certain areas. The rubber thickening ring can be moved to the corresponding position and snapped in place, thereby increasing the thickness and strength of the rubber sleeve at the corresponding position. Attached Figure Description

[0019] Figure 1 This is an exploded view of the shock absorption device in Embodiment 1 of this utility model;

[0020] Figure 2 This is an axial view of the rubber sleeve in Embodiment 1 of this utility model;

[0021] Figure 3 This is a cross-sectional view of the shock absorption device in Embodiment 1 of this utility model;

[0022] Figure 4 This is Embodiment 1 of the present utility model. Figure 3Enlarged view of section A;

[0023] Figure 5 This is Embodiment 1 of the present utility model. Figure 3 Enlarged view of section B;

[0024] Figure 6 This is a cross-sectional view of the rubber sleeve and outer tube in Embodiment 2 of this utility model;

[0025] Figure 7 This is Embodiment Two of the present utility model. Figure 6 Enlarged view of section C.

[0026] Explanation of reference numerals in the attached drawings: 1. Inner tube; 11. Rubber shielding ring; 2. Rubber sleeve; 21. Honeycomb hole; 22. Fluorocarbon coating; 23. Blocking retaining ring; 24. Rubber thickening ring; 241. Snap-fit ​​protrusion; 25. Snap-fit ​​groove; 3. Outer tube. Detailed Implementation

[0027] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0028] In the description of this utility model, it should be understood that the terms "upper" and "lower" indicate the orientation or positional relationship based on the orientation or positional relationship when the product is in normal use.

[0029] The following is in conjunction with the appendix Figure 1-7 This application will be described in further detail.

[0030] This utility model provides a harvester shock absorption device. Embodiment 1: Refer to... Figure 1 and Figure 2 The harvester's shock absorption device includes an inner tube 1, a rubber sleeve 2, and an outer tube 3. The rubber sleeve 2 is fitted onto the inner tube 1, and the outer tube 3 is fitted onto the rubber sleeve 2. Both the inner tube 1 and the outer tube 3 are interference-fitted with the rubber sleeve 2. One axial end of the rubber sleeve 2 is provided with honeycomb holes 21, which extend and are arranged circumferentially along the rubber sleeve 2 and penetrate the rubber sleeve 2 axially. When the rubber sleeve 2 is impacted or compressed, the expansion and contraction of the honeycomb holes 21 can mitigate the impact force and improve the shock absorption effect.

[0031] Reference Figure 1 and Figure 2 During production, the outer wall of the inner tube 1 is first coated with adhesive. Then, the inner tube 1 is placed into a rubber mold to form the rubber sleeve 2, which is then vulcanized. This improves the stability of the connection between the inner tube 1 and the rubber sleeve 2, as well as the corrosion resistance of the rubber sleeve 2. Furthermore, the step of placing the inner tube 1 into the rubber mold to form the rubber sleeve 2 ensures that the amount of adhesive injected into each product is consistent, resulting in a roughly uniform internal density for the rubber sleeve 2, thus guaranteeing consistent shock absorption at all locations within the rubber sleeve 2.

[0032] Reference Figure 1 and Figure 3 Because the rubber sleeve 2 and the outer tube 3 are interference-fitted, the outer edges of both ends of the rubber sleeve 2 are rounded to ensure that the outer tube 3 can be smoothly fitted onto the rubber sleeve 2. Simultaneously, the outer peripheral wall of the rubber sleeve 2 is coated with a fluorocarbon coating 22, located between the two rounded corners. When the rubber sleeve 2 with a large interference fit is pressed into the outer tube 3, the fluorocarbon coating 22 provides lubrication, preventing damage to the rubber due to pressing. Furthermore, under extreme overload conditions, the damping device allows for slight rotation between the rubber sleeve 2 and the outer tube 3 to prevent tearing of the rubber sleeve 2, thereby improving its service life. The fluorocarbon coating 22 also has good anti-stick properties, preventing dust from adhering to the outer wall of the rubber sleeve 2 and affecting the lubrication between the outer tube 3 and the rubber sleeve 2.

[0033] Combination Figure 1 Reference Figure 3 and Figure 4 The outer wall of the rubber sleeve 2 is formed with two retaining rings 23, which are spaced apart along the axial direction of the rubber sleeve 2. The fluorocarbon coating 22 is located between the two retaining rings 23. The inner wall of the outer tube 3 is provided with two mating ring grooves, and the two retaining rings 23 are respectively inserted into the two mating ring grooves. The mating of the retaining rings 23 and the mating ring grooves can achieve the effect of isolation, further improving the sealing between the rubber sleeve 2 and the outer tube 3, making it difficult for dust or liquid to enter the fluorocarbon coating 22 between the rubber sleeve 2 and the outer tube 3 and affect it. It is worth noting that the protrusion height of the retaining rings 23 is small, so it does not interfere with or affect the installation of the outer tube 3.

[0034] Combination Figure 1 Reference Figure 2 and Figure 5 Since harvesters operate in harsh, dusty outdoor environments for extended periods, the inside of the honeycomb holes 21 is coated with a fluorocarbon coating 22. Simultaneously, a rubber shielding ring 11 is fitted onto the inner tube 1, and the outer wall of the inner tube 1 has an outer ring groove into which the inner side of the rubber shielding ring 11 is inserted. The outer tube 3 has an insertion ring groove into which the outer side of the rubber shielding ring 11 is inserted, thus shielding the honeycomb holes 21 and preventing dust or crop particles from entering and causing blockages that could affect the shock absorption effect. Two rubber shielding rings 11 are provided, located at opposite ends of the rubber sleeve 2 to shield the openings of the honeycomb holes 21.

[0035] The rubber shielding rings 11 and the rubber sleeve 2 are arranged at intervals at their corresponding ends. In this way, while ensuring the sealing of the honeycomb holes 21, the honeycomb holes 21 can also have a certain exhaust space after the rubber sleeve 2 is squeezed, so that there is an air pressure chamber between the two rubber shielding rings 11, which can increase the shock absorption effect of the rubber sleeve 2.

[0036] Reference Figure 1 and Figure 3 The axial length of the outer tube 3 is greater than the axial length of the rubber sleeve 2, while the rubber sleeve 2 is completely located inside the outer tube 3. After the outer tube 3 is interference-fitted onto the rubber sleeve 2, both ends of the outer tube 3 are processed and bent inward to form a constriction. The inner diameter of the constriction is smaller than the outer diameter of the rubber sleeve 2. On the one hand, the constriction can limit the rubber sleeve 2, making it less likely for the rubber sleeve 2 to slip out of the outer tube 3 during use; on the other hand, the constriction can also form a barrier, making it difficult for dust to enter between the outer tube 3 and the rubber sleeve 2.

[0037] The implementation principle of the harvester shock absorption device in this application embodiment is as follows: The inner tube 1 and the outer tube 3 can protect the rubber sleeve 2, preventing the rubber sleeve 2 from being exposed to air for a long time and thus corroding faster. During production and assembly, the step of placing the inner tube 1 into the rubber mold to form the rubber sleeve 2 ensures that the amount of glue injected into each product is consistent, making the internal density of the rubber sleeve 2 approximately the same, thereby ensuring that the shock absorption effect of the rubber sleeve 2 is the same at all positions; while when the outer tube 3 is fitted inside the rubber sleeve 2, the fluorocarbon coating 22 can play a lubricating role, ensuring that the rubber sleeve 2 is not damaged due to pressing, thus improving the installation quality.

[0038] When the rubber sleeve 2 is impacted or squeezed, on the one hand, the rubber sleeve 2 can mitigate the impact force by expanding and contracting the honeycomb holes 21; on the other hand, a relatively sealed space can be formed between the two rubber shielding rings 11, so that there is a pneumatic shock absorption buffer cavity between the two rubber shielding rings 11, thereby improving the shock absorption effect.

[0039] Example 2: Combination Figure 2 Reference Figure 6 and Figure 7 The difference between this embodiment and Embodiment 1 is that the rubber sleeve 2 is manufactured separately, eliminating the need to insert the inner tube 1 into the rubber mold. Subsequently, the rubber sleeve 2 is simply interference-fitted onto the inner tube 1. Furthermore, a rubber thickening ring 24 is snap-fitted into the rubber sleeve 2, and its position within the rubber sleeve 2 can be adjusted along its axial direction. In different application scenarios, the shock-absorbing device may experience significant or concentrated stress in certain areas. The rubber thickening ring 24 can be moved to the corresponding position and snap-fitted in place, thereby increasing the thickness and strength of the rubber sleeve 2 at that location.

[0040] The outer wall of the rubber thickening ring 24 is integrally formed with multiple snap-fit ​​protrusions 241 spaced apart circumferentially. The inner wall of the rubber sleeve 2 has the same number of snap-fit ​​grooves 25. The multiple snap-fit ​​protrusions 241 correspond one-to-one with the multiple snap-fit ​​grooves 25, and the snap-fit ​​protrusions 241 are snapped into the corresponding snap-fit ​​grooves 25. In this way, the rubber thickening ring 24 is not easy to move after installation and can be firmly located in the part of the rubber sleeve 2 that needs to be thickened.

[0041] Combination Figure 2 Reference Figure 6 and Figure 7 If the multiple snap-fit ​​grooves 25 located around the rubber thickening ring 24 are considered as a set of snap-fit ​​grooves, then there are multiple sets of snap-fit ​​grooves. These multiple sets of snap-fit ​​grooves are arranged at intervals along the axial direction of the rubber sleeve 2. The rubber thickening ring 24 can be snapped into any set of snap-fit ​​grooves by its own snap-fit ​​protrusions 241 to achieve position adjustment.

[0042] Among them, the thickness of the rubber thickening ring 24 is relatively thin, which does not affect the contact between the other parts inside the rubber sleeve 2 and the inner tube 1.

[0043] The inner edges of both ends of the rubber thickening ring 24 are chamfered, which makes the rubber thickening ring 24 relatively smooth when it is fitted into the inner tube 1.

[0044] The above embodiments only illustrate two implementation methods of this disclosure, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make several modifications and improvements without departing from the utility model concept of this disclosure, and these all fall within the protection scope of this disclosure.

Claims

1. A shock absorption device for a harvester, characterized in that: The device includes an inner tube (1), a rubber sleeve (2), and an outer tube (3). The rubber sleeve (2) is fitted onto the inner tube (1), and the outer tube (3) is fitted onto the rubber sleeve (2). One axial end of the rubber sleeve (2) is provided with a honeycomb hole (21), which extends and is arranged circumferentially along the rubber sleeve (2). The honeycomb hole (21) penetrates the rubber sleeve (2) along its axial direction. Both the inner tube (1) and the outer tube (3) are interference-fitted with the rubber sleeve (2). The outer peripheral wall of the rubber sleeve (2) is coated with a fluorocarbon coating (22). The outer wall of the rubber sleeve (2) is formed with a retaining ring (23). Two retaining rings (23) are spaced apart and arranged along the axial direction of the rubber sleeve (2). The fluorocarbon coating (22) is located between the two retaining rings (23). The inner wall of the outer tube (3) is provided with two mating ring grooves spaced apart. The two retaining rings (23) are respectively inserted into the two mating ring grooves.

2. The harvester shock absorption device according to claim 1, characterized in that: A rubber thickening ring (24) is snapped into the rubber sleeve (2), and the position of the rubber thickening ring (24) inside the rubber sleeve (2) can be adjusted by moving along the axial direction of the rubber sleeve (2).

3. The harvester shock absorption device according to claim 1, characterized in that: The outer edges of both ends of the rubber sleeve (2) are rounded.

4. The harvester shock absorption device according to claim 1, characterized in that: The rubber sleeve (2) is completely located inside the outer tube (3), and both ends of the outer tube (3) are processed with constriction so that the inner diameter of both ends of the outer tube (3) is smaller than the outer diameter of the rubber sleeve (2).

5. The harvester shock absorption device according to any one of claims 1-4, characterized in that: The inner tube (1) is fitted with a rubber shielding ring (11), and there are two rubber shielding rings (11). The two rubber shielding rings (11) are located at both ends of the rubber sleeve (2) and are suitable for shielding the opening of the honeycomb hole (21).

6. The harvester shock absorption device according to claim 5, characterized in that: The rubber shielding ring (11) and the end of the rubber sleeve (2) are arranged at intervals.

7. The harvester shock absorption device according to claim 5, characterized in that: The outer wall of the inner tube (1) is provided with an outer ring groove, and the inner side of the rubber shielding ring (11) is inserted into the outer ring groove.

8. The harvester shock absorption device according to claim 7, characterized in that: The outer tube (3) is provided with a plug-in ring groove, and the outer side of the rubber shielding ring (11) is inserted into the plug-in ring groove.

9. The harvester shock absorption device according to claim 2, characterized in that: The outer wall of the rubber thickening ring (24) is provided with a snap-fit ​​protrusion (241), and the inner wall of the rubber sleeve (2) is provided with a snap-fit ​​groove (25). Multiple snap-fit ​​grooves (25) are spaced apart along the axial direction of the rubber sleeve (2), and the snap-fit ​​protrusion (241) is adapted to snap-fit ​​into any one of the snap-fit ​​grooves (25).

10. The harvester shock absorption device according to claim 9, characterized in that: The inner edge of the end of the rubber thickening ring (24) is provided with a chamfer.

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