Hydraulic mechanical cushioning device

Abstract

The utility model relates to hydraulic mechanical technical field provides a kind of hydraulic mechanical buffer device, comprising: substrate, further comprising: buffer component, set in the outer surface of the substrate, the buffer component includes: buffer oil cylinder, set in the outer surface of the substrate, wherein, the inner wall of buffer oil cylinder is provided with buffer rod;Buffer plate, set in one end of the buffer rod, wherein, both ends of buffer plate are provided with connecting rod;Wherein, one end of buffer rod is provided with buffer block;Two groups of butterfly springs, in the utility model, when buffer plate encounters high-speed impact, liquid pressure instantaneously rises through through-hole and pushes conical valve, sealing washer and connecting shaft to move in guide pipe, since threaded rod cooperates with moving plate to limit limiting plate, so that elastic member is compressed when connecting shaft moves, it is favorable to avoid that the pressure in buffer oil cylinder is too high, high-speed impact energy is quickly absorbed, avoid load direct transmission to substrate.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic machinery technology, and in particular to a hydraulic machinery buffer device. Background Technology

[0002] Hydraulic mechanical buffer devices are key components in hydraulic systems specifically designed to suppress or eliminate impacts at the end of the movement of actuators (such as hydraulic cylinders and hydraulic motors) and absorb kinetic energy. During the operation of hydraulic machinery, actuators (such as cylinders propelling loads forward or motors driving components to rotate) often experience severe impacts due to inertia when reaching the end of their stroke or suddenly stopping (commonly known as "cylinder ramming" or "overshooting"). This can lead to deformation of the mechanical structure, damage to seals, or even a sudden increase in system pressure. Buffer devices, through "forced hydraulic throttling" or "energy conversion," convert kinetic energy into heat or pressure energy and release it slowly, thereby achieving smooth deceleration and protecting the equipment.

[0003] In the prior art, such as Chinese Patent No. CN202421179822.6, this utility model discloses a hydraulic mechanical buffer device, belonging to the field of hydraulic mechanical technology. It aims to solve the problem that the height of the first support plate in the prior art is fixed and cannot be adjusted. Therefore, when different rail vehicles are involved, such as subways, light rails, and high-speed trains, the height of the hydraulic buffer will change accordingly due to the different vehicle specifications, making the hydraulic mechanical buffer device unable to adapt well. The device includes a base frame, with mounting mechanisms installed on both sides of the base frame, and a fixed frame fixed on one side of the upper part of the base frame. An adjustment mechanism is jointly installed inside and outside the fixed frame. The adjustment mechanism includes two lifting columns, with hydraulic cylinders connected to the tops of the two lifting columns. A hydraulic rod is movable in the middle of the hydraulic cylinder, and a rubber buffer plate is connected to the top of the hydraulic rod. The adjustment mechanism includes an adjustment component, which is installed inside and on one side of the fixed frame.

[0004] While the above solutions have the advantages mentioned above, their disadvantages are that, in the existing technology, the throttling channel diameter of the throttling cylinder is fixed. When the impact speed increases sharply, the hydraulic oil cannot be discharged smoothly, which can easily lead to excessive pressure inside the cylinder, damaging the seals or the cylinder body. When the impact speed is too slow, the damping force is too small, resulting in a weak buffering effect. It is impossible to adjust the buffering parameters in real time according to the actual impact speed, resulting in poor buffering adaptability and limited application scenarios. Utility Model Content

[0005] The purpose of this invention is to solve the problems in the prior art where the throttling channel diameter of the throttling cylinder is fixed. When the impact speed increases suddenly, the hydraulic oil cannot be discharged smoothly, which can easily lead to excessive pressure in the cylinder, damaging the seals or cylinder body. When the impact speed is too slow, the damping force is too small, resulting in a weak buffering effect. It is impossible to adjust the buffering parameters in real time according to the actual impact speed, resulting in poor buffering adaptability and limited application scenarios.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a hydraulic mechanical buffer device, comprising: a base plate, and further comprising:

[0007] A buffer assembly is disposed on the outer surface of the substrate, the buffer assembly comprising:

[0008] A buffer cylinder is disposed on the outer surface of the substrate, wherein a buffer rod is disposed on the inner wall of the buffer cylinder;

[0009] A buffer plate is provided at one end of the buffer rod, wherein connecting rods are provided at both ends of the buffer plate;

[0010] One end of the buffer rod is equipped with a buffer block;

[0011] Two sets of butterfly springs are respectively installed on the outer surface of the two connecting rods, and each end of the two sets of butterfly springs is provided with a connecting tube;

[0012] A sealing ring is disposed on the outer surface of the buffer block.

[0013] Adjustment components are located on the outer surface of the buffer cylinder.

[0014] Preferably, the buffer component includes:

[0015] Multiple through holes are provided on the outer surface of the buffer block, and a baffle is provided on the outer surface of the buffer block;

[0016] A retaining ring is disposed on the outer surface of the buffer block, and the outer surface of the buffer cylinder is provided with multiple through holes.

[0017] The technical effect of adopting the above-mentioned further solution is that the setting of the retaining ring and the baffle makes it easier to prevent the sealing ring from blocking the through hole.

[0018] Preferably, the adjustment component includes:

[0019] Multiple liquid guide tubes are disposed on the outer surface of the buffer cylinder, and the inner walls of the multiple liquid guide tubes are provided with sealing rings.

[0020] The technical effect of adopting the above-mentioned further solution is that the setting of the sealing ring facilitates the enhancement of its sealing performance with the outer surface of the connecting shaft, and prevents the liquid in the liquid guide tube from flowing out from the connecting shaft and the sealing ring.

[0021] Preferably, the adjustment component further includes:

[0022] Multiple connecting shafts are respectively disposed on the outer surface of multiple sealing rings, wherein a conical valve is disposed at one end of each connecting shaft near the through hole.

[0023] The technical effect of adopting the above-mentioned further solution is that the conical valve is fixedly connected to the connecting shaft, which facilitates the enhancement of the stability between the two.

[0024] Preferably, the adjustment component further includes:

[0025] Multiple sealing gaskets are respectively disposed on the outer surface of the multiple conical valves, and elastic elements are disposed on the outer surface of the multiple connecting shafts.

[0026] The technical effect of adopting the above-mentioned further solution is that the two ends of the elastic element are movably connected to the connecting shaft and the limiting plate respectively, which facilitates the enhancement of the flexibility of the elastic element.

[0027] Preferably, the adjustment component further includes:

[0028] Multiple limiting plates are respectively disposed on the outer surface of multiple connecting shafts, wherein each of the multiple limiting plates has a movable plate disposed on its outer surface.

[0029] The technical effect of adopting the above-mentioned further solution is that the moving plate and the limiting plate are movably connected, which makes it easier for the moving plate to push the limiting plate to move.

[0030] Preferably, the adjustment component further includes:

[0031] Multiple threaded rods are respectively disposed on the inner walls of multiple movable plates, wherein the outer surfaces of the multiple threaded rods are respectively disposed on the inner walls of multiple liquid guiding tubes.

[0032] The technical advantage of adopting the above-mentioned further solution is that the threaded rod is rotatably installed on the inner wall of the moving plate, which makes it easy not to affect the position of the moving plate when the threaded rod rotates.

[0033] Preferably, the outer surfaces of the plurality of elastic elements are in contact with the plurality of limiting plates, and the outer surfaces of the plurality of limiting plates are in contact with the outer surfaces of the plurality of liquid guiding tubes.

[0034] The technical effect of adopting the above-mentioned further solution is that the outer surface of the limiting plate slides on the outer surface of the liquid guide tube, which helps to prevent the limiting plate from being misaligned and enhances the stability of the elastic element.

[0035] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0036] 1. In this utility model, when the buffer plate encounters a high-speed impact, the liquid pressure rises instantaneously and pushes the conical valve, sealing gasket and connecting shaft to move in the liquid guide tube through the through hole. Since the threaded rod cooperates with the moving plate to restrict the limiting plate, the elastic element is compressed when the connecting shaft moves, which helps to avoid excessive pressure in the buffer cylinder, quickly absorb high-speed impact energy, and prevent the load from being directly transmitted to the base plate.

[0037] 2. In this utility model, the internal hydraulic pressure of the buffer cylinder will rise in temperature due to frequent friction in the through hole. The high-temperature liquid enters the liquid guide tube through the through hole and then flows into the buffer cylinder through the other end of the liquid guide tube. Multiple liquid guide tubes facilitate the cooling of the liquid inside the buffer cylinder in the environment of frequent use in this application. Attached Figure Description

[0038] Figure 1 This is a schematic diagram of the structure of a hydraulic mechanical buffer device proposed in this utility model;

[0039] Figure 2 This is a partial cross-sectional view of a hydraulic mechanical buffer device proposed in this utility model;

[0040] Figure 3 This is a side view of a hydraulic mechanical buffer device proposed in this utility model;

[0041] Figure 4 This utility model proposes a hydraulic mechanical buffer device. Figure 2 Enlarged structural diagram at point A in the middle.

[0042] Legend:

[0043] 1. Base plate; 2. Connecting pipe; 3. Butterfly spring; 4. Buffer plate; 5. Buffer rod; 6. Through hole; 7. Liquid guide pipe; 701. Threaded rod; 702. Sealing ring; 703. Connecting shaft; 704. Conical valve; 705. Sealing gasket; 706. Elastic element; 707. Limiting plate; 708. Moving plate; 8. Connecting rod; 9. Buffer block; 901. Sealing ring; 902. Through hole; 903. Baffle; 904. Retaining ring; 10. Buffer cylinder. Detailed Implementation

[0044] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0045] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0046] Example 1, such as Figure 1-4 As shown, this utility model provides a hydraulic mechanical buffer device, including: a base plate 1, and further including:

[0047] A buffer assembly is disposed on the outer surface of substrate 1. The buffer assembly includes:

[0048] A buffer cylinder 10 is disposed on the outer surface of the substrate 1, wherein a buffer rod 5 is disposed on the inner wall of the buffer cylinder 10;

[0049] A buffer plate 4 is provided at one end of a buffer rod 5, wherein both ends of the buffer plate 4 are provided with connecting rods 8;

[0050] One end of the buffer rod 5 is provided with a buffer block 9;

[0051] Two sets of butterfly springs 3 are respectively installed on the outer surface of the two connecting rods 8, and each end of the two sets of butterfly springs 3 is provided with a connecting tube 2;

[0052] The sealing ring 901 is disposed on the outer surface of the buffer block 9;

[0053] Adjustment components are located on the outer surface of the buffer cylinder 10;

[0054] The buffer components include:

[0055] Multiple through holes 902 are provided on the outer surface of the buffer block 9, and a baffle 903 is provided on the outer surface of the buffer block 9.

[0056] A retaining ring 904 is provided on the outer surface of the buffer block 9, and multiple through holes 6 are provided on the outer surface of the buffer cylinder 10.

[0057] In this embodiment, the connecting pipe 2 works in conjunction with the connecting rod 8 to improve the stability of the connecting rod 8 during movement, while preventing the disc spring 3 from falling off. The sealing ring 901 is designed to enhance the sealing performance between the sealing ring 901 and the inner wall of the buffer cylinder 10.

[0058] Example 2, as Figure 1-4 As shown, the adjustment components include:

[0059] Multiple liquid guide tubes 7 are provided on the outer surface of the buffer cylinder 10, and the inner wall of each of the multiple liquid guide tubes 7 is provided with a sealing ring 702.

[0060] The adjustment components also include:

[0061] Multiple connecting shafts 703 are respectively disposed on the outer surface of multiple sealing rings 702, wherein a conical valve 704 is provided at one end of each connecting shaft 703 near the through hole 6;

[0062] The adjustment components also include:

[0063] Multiple sealing gaskets 705 are respectively disposed on the outer surface of multiple cone valves 704, and elastic elements 706 are disposed on the outer surface of multiple connecting shafts 703;

[0064] The adjustment components also include:

[0065] Multiple limiting plates 707 are respectively disposed on the outer surface of multiple connecting shafts 703, wherein each of the multiple limiting plates 707 has a movable plate 708 disposed on its outer surface;

[0066] The adjustment components also include:

[0067] Multiple threaded rods 701 are respectively disposed on the inner walls of multiple movable plates 708, wherein the outer surfaces of the multiple threaded rods 701 are respectively disposed on the inner walls of multiple liquid guiding tubes 7, the outer surfaces of multiple elastic elements 706 are respectively in contact with multiple limiting plates 707, and the outer surfaces of multiple limiting plates 707 are respectively in contact with the outer surfaces of multiple liquid guiding tubes 7.

[0068] In this embodiment, the internal hydraulic pressure of the buffer cylinder 10 will rise in temperature due to frequent friction in the through hole 902. The hot liquid enters the liquid guide tube 7 through the through hole 6, and then flows into the buffer cylinder 10 through the other end of the liquid guide tube 7. Multiple liquid guide tubes 7 facilitate the cooling of the liquid inside the buffer cylinder 10 in the environment of frequent use in this application.

[0069] Working principle: The base plate 1 is fixed to the equipment to be protected or the foundation ground with bolts. When the buffer plate 4 is hit at low speed, the impact force is transmitted through the buffer plate 4 to the buffer rod 5, the connecting rod 8, and the butterfly spring 3. The connecting rod 8 retracts into the connecting pipe 2, and the butterfly spring 3 deforms. The buffer rod 5 drives the buffer block 9, the sealing ring 901, the baffle 903, the retaining ring 904, and the through hole 6 to move, squeezing the liquid in the buffer cylinder 10. The through hole 6 generates resistance by friction with the liquid to offset the impact force, converting mechanical energy into internal energy. When the buffer plate 4 is hit at high speed, the liquid pressure rises instantaneously and pushes the cone valve 704, the sealing gasket 705, and the connecting shaft 703 to move in the liquid guide pipe 7 through the through hole 6. Since the threaded rod 701 cooperates with the moving plate 708 to restrict the limiting plate 707, the elastic element 706 is compressed when the connecting shaft 703 moves. This helps to avoid excessive pressure in the buffer cylinder 10, quickly absorb high-speed impact energy, and prevent the load from being directly transmitted to the base plate 1.

[0070] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A hydraulic mechanical buffer device, comprising: The substrate (1) is characterized in that it further comprises: A buffer assembly is disposed on the outer surface of the substrate (1), the buffer assembly comprising: A buffer cylinder (10) is disposed on the outer surface of the substrate (1), wherein a buffer rod (5) is disposed on the inner wall of the buffer cylinder (10); A buffer plate (4) is provided at one end of the buffer rod (5), wherein both ends of the buffer plate (4) are provided with connecting rods (8); Among them, a buffer block (9) is provided at one end of the buffer rod (5); Two sets of butterfly springs (3) are respectively set on the outer surface of the two connecting rods (8), wherein both ends of the two sets of butterfly springs (3) are provided with connecting tubes (2); A sealing ring (901) is disposed on the outer surface of the buffer block (9); Adjustment components are located on the outer surface of the buffer cylinder (10).

2. The hydraulic mechanical buffer device according to claim 1, characterized in that: The buffer component includes: Multiple through holes (902) are provided on the outer surface of the buffer block (9), and a baffle (903) is provided on the outer surface of the buffer block (9); A retaining ring (904) is provided on the outer surface of the buffer block (9), and a plurality of through holes (6) are provided on the outer surface of the buffer cylinder (10).

3. A hydraulic mechanical buffer device according to claim 2, characterized in that: The adjustment components include: Multiple liquid guide tubes (7) are provided on the outer surface of the buffer cylinder (10), wherein the inner wall of each of the multiple liquid guide tubes (7) is provided with a sealing ring (702).

4. A hydraulic mechanical buffer device according to claim 3, characterized in that: The adjustment component also includes: Multiple connecting shafts (703) are respectively disposed on the outer surface of multiple sealing rings (702), wherein a conical valve (704) is provided at one end of each connecting shaft (703) near the through hole (6).

5. A hydraulic mechanical buffer device according to claim 4, characterized in that: The adjustment component also includes: Multiple sealing gaskets (705) are respectively disposed on the outer surface of the multiple conical valves (704), and elastic elements (706) are disposed on the outer surface of the multiple connecting shafts (703).

6. A hydraulic mechanical buffer device according to claim 5, characterized in that: The adjustment component also includes: Multiple limiting plates (707) are respectively disposed on the outer surface of multiple connecting shafts (703), wherein each of the multiple limiting plates (707) has a movable plate (708) disposed on the outer surface of the multiple limiting plates (707).

7. A hydraulic mechanical buffer device according to claim 6, characterized in that: The adjustment component also includes: Multiple threaded rods (701) are respectively disposed on the inner walls of multiple movable plates (708), wherein the outer surfaces of the multiple threaded rods (701) are respectively disposed on the inner walls of multiple liquid guide tubes (7).

8. A hydraulic mechanical buffer device according to claim 7, characterized in that: The outer surfaces of the plurality of elastic elements (706) are in contact with the plurality of limiting plates (707), and the outer surfaces of the plurality of limiting plates (707) are in contact with the outer surfaces of the plurality of liquid guide tubes (7).

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