Hydraulic damping device for machinery

Abstract

The utility model relates to the technical field of damping devices, and discloses a mechanical hydraulic damping device which comprises an oil cylinder, a magnet fixedly connected to the top of the inner side of the oil cylinder, a connecting rod slidably sleeved on the top of the oil cylinder, a round hole matched with the connecting rod, and a rubber ring fixedly connected to the middle of the top of the oil cylinder. The bottom of the connecting rod is fixedly connected with a sliding plate, the circumferential surface of the sliding plate is fixedly connected with a rubber sealing ring, the rubber sealing ring is attached to the circumferential inner wall of the oil cylinder, rectangular grooves are formed in the two sides of the top of the sliding plate, and a pressure relief mechanism is arranged in each rectangular groove. According to the damping device, when the buffering spring is subjected to instant large pressure, the damping device can make deformation reaction more quickly, and the technical effect of better buffering and damping effects is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of shock absorbing devices, in particular to a hydraulic shock absorbing device for machinery. Background Art

[0002] With the rapid development of modern engineering construction, various types of construction machinery play an important role in the construction process. However, during the operation of construction machinery, due to factors such as complex working environment and load changes, the equipment often produces large vibrations. This vibration will not only affect the service life of the machinery and reduce work efficiency, but may also have a negative impact on the surrounding environment and the safety of operators. Hydraulic shock absorbers are widely used in various types of construction machinery as an effective shock absorption method.

[0003] In the existing technology, hydraulic shock absorbers are widely used in various types of mechanical equipment as a common shock absorption method. The hydraulic shock absorbers use the flow resistance of the liquid medium to convert the mechanical vibration energy into heat energy, thereby reducing the amplitude and frequency of the mechanical vibration. However, when the existing hydraulic shock absorbers are in use, the size of the oil holes inside the shock absorbers is fixed and inconvenient. At this time, when the hydraulic shock absorbers are instantly subjected to a large pressure, the hydraulic oil inside the hydraulic shock absorbers is difficult to flow quickly, making it impossible for the hydraulic shock absorbers to respond quickly and play a role quickly. For this reason, a hydraulic shock absorber for machinery is designed. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes a hydraulic shock absorbing device for machinery.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A hydraulic shock absorbing device for machinery comprises an oil cylinder, a magnet is fixedly connected to the top of the inner side of the oil cylinder, a connecting rod is provided in the sliding sleeve on the top of the oil cylinder, a circular hole matching the connecting rod is provided on the top of the oil cylinder, a rubber ring is fixedly connected to the middle of the top of the oil cylinder, and a circular hole matching the connecting rod is provided on the rubber ring, a sliding plate is fixedly connected to the bottom of the connecting rod, a rubber sealing ring is fixedly connected to the circumferential surface of the sliding plate, and the rubber sealing ring fits the circumferential inner wall of the oil cylinder, rectangular grooves are provided on both sides of the top of the sliding plate, a pressure relief mechanism is provided in each of the rectangular grooves, and the pressure relief mechanism comprises two first sliding rods fixedly connected to one side of the rectangular groove, and the two first sliding rods are fixedly connected to the two sides of the rectangular groove. The sliding sleeve on the circumferential surface of the rod is provided with an L-shaped baffle, and circular holes compatible with the first sliding rod are opened on both sides of the L-shaped baffle, and the other ends of the two first sliding rods are fixedly connected to the same limit plate, and the ends of the two first sliding rods close to the side walls of the rectangular grooves are sleeved with a first spring, and an iron block is fixedly connected to the top of the L-shaped baffle, and the iron block is compatible with the magnet, and a second oil inlet hole is opened at one end of the two rectangular grooves close to the L-shaped baffle. The pressure relief mechanism is set so that in the initial stage of the sliding plate descending, the hydraulic oil at the bottom of the oil cylinder can enter the top of the sliding plate through the second oil inlet hole and the first oil inlet hole, so that when the sliding plate is subjected to greater pressure, it can quickly perform shock-absorbing and buffering effects.

[0007] As a further solution of the utility model, first oil inlet holes are symmetrically provided at both ends of the top of the sliding plate, second sliding rods are fixedly connected to both sides of the top of each of the first oil inlet holes, the circumferential surface of the two second sliding rods at the same end are slidingly sleeved with the same oil baffle plate, circular holes matching the second sliding rods are provided at both ends of the oil baffle plate, protrusions are fixedly connected to the tops of the two second sliding rods at the same end, and each of the second sliding rods is sleeved with a second spring at the top of the oil baffle plate.

[0008] As a further solution of the utility model, a square rod is fixedly connected to the middle position of the bottom of the sliding plate, a limiting block is fixedly connected to the bottom of the square rod, a connecting plate is provided on the sliding sleeve of the circumferential surface of the square rod, a circular hole matching the square rod is opened in the middle of the connecting plate, and a third spring is provided on the bottom of the square rod.

[0009] As a further solution of the utility model, the two ends of the connecting plate are fixedly connected with a same circular ring, and the top edge of the sliding plate is provided with four oil outlet holes, and the oil outlet holes are adapted to the circular ring.

[0010] As a further solution of the utility model, a lower sleeve is fixedly connected to the bottom of the oil cylinder, a first connecting piece is fixedly connected to the outer bottom of the lower sleeve, an upper sleeve is fixedly connected to the top of the connecting rod, and a second connecting piece is fixedly connected to the outer top of the upper sleeve.

[0011] As a further solution of the utility model, a same buffer spring is sleeved between the lower sleeve and the upper sleeve.

[0012] The beneficial effects of the utility model are:

[0013] The utility model: due to the use of rectangular grooves, second oil inlet holes, L-shaped baffles, first slide bars, first springs and iron blocks, when the device is in a natural state, the two second oil inlet holes are in an open state, and when suddenly subjected to pressure, the hydraulic oil can enter the top of the sliding plate through the two second oil inlet holes, and then the two second oil inlet holes are closed, and under the action of oil pressure, the two first oil inlet holes are opened and operate normally, so that the device can quickly make a buffering response, effectively solving the problems raised in the background technology, and further realizing that when the buffer spring is subjected to a large instantaneous pressure, the device can make a faster deformation response, thereby achieving a better buffering and shock absorbing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the overall structure of a hydraulic shock absorbing device for machinery proposed by the utility model;

[0015] Figure 2 This is a schematic cross-sectional view of the oil cylinder of a hydraulic shock absorbing device for machinery proposed by the utility model;

[0016] Figure 3 This is a structural schematic diagram of the top of a sliding plate of a hydraulic shock absorbing device for machinery proposed by the utility model;

[0017] Figure 4 A hydraulic shock absorbing device for machinery proposed by the utility model Figure 3 A schematic diagram of the structure enlarged at A;

[0018] Figure 5 A hydraulic shock absorbing device for machinery proposed by the utility model Figure 3 A schematic diagram of the structure enlarged at B;

[0019] Figure 6 This is a structural schematic diagram of the bottom of a sliding plate of a hydraulic shock absorbing device for machinery proposed by the utility model;

[0020] Figure 7 A hydraulic shock absorbing device for machinery proposed by the utility model Figure 6 Schematic diagram of the enlarged structure at C.

[0021] In the figure: 1. oil cylinder; 2. lower sleeve; 201. first connecting piece; 3. upper sleeve; 301. second connecting piece; 4. buffer spring; 5. magnet; 6. rubber sealing ring; 7. sliding plate; 8. connecting rod; 9. rubber ring; 10. oil outlet; 11. first oil inlet; 12. rectangular groove; 13. second oil inlet; 14. L-shaped baffle; 15. first slide bar; 16. first spring; 17. iron block; 18. oil baffle plate; 19. second slide bar; 20. second spring; 21. bump; 22. connecting plate; 23. square rod; 24. third spring; 25. limit block; 26. circular ring. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0023] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0024] Reference Figure 1-Figure 7 A hydraulic shock absorbing device for machinery comprises an oil cylinder 1, a magnet 5 is fixedly connected to the top of the inner side of the oil cylinder 1, a connecting rod 8 is provided on the sliding sleeve of the top of the oil cylinder 1, a round hole matching the connecting rod 8 is provided on the top of the oil cylinder 1, a rubber ring 9 is fixedly connected to the middle of the top of the oil cylinder 1, and a round hole matching the connecting rod 8 is provided on the rubber ring 9, a sliding plate 7 is fixedly connected to the bottom of the connecting rod 8, a rubber sealing ring 6 is fixedly connected to the circumferential surface of the sliding plate 7, and the rubber sealing ring 6 is in contact with the circumferential inner wall of the oil cylinder 1, rectangular grooves 12 are provided on both sides of the top of the sliding plate 7, and a pressure relief mechanism is provided in each rectangular groove 12, and a pressure relief mechanism is provided in each rectangular groove 12. The pressing mechanism includes two first sliding rods 15 fixedly connected to one side of the rectangular groove 12, and the same L-shaped baffle 14 is slidably sleeved on the circumferential surface of the two first sliding rods 15. Circular holes matched with the first sliding rods 15 are provided on both sides of the L-shaped baffle 14. The other ends of the two first sliding rods 15 are fixedly connected to the same limit plate, and the ends of the two first sliding rods 15 close to the side wall of the rectangular groove 12 are sleeved with a first spring 16. An iron block 17 is fixedly connected to the top of the L-shaped baffle 14, and the iron block 17 is matched with the magnet 5. The two rectangular grooves 12 are each provided with a second oil inlet hole 13 at one end close to the L-shaped baffle 14.

[0025] In this embodiment, first oil inlet holes 11 are symmetrically provided at both ends of the top of the sliding plate 7, and second slide bars 19 are fixedly connected to both sides of the top of each first oil inlet hole 11. The circumferential surface of the two second slide bars 19 at the same end is slidably sleeved with the same oil baffle plate 18. Circular holes matching the second slide bars 19 are provided at both ends of the oil baffle plate 18, and protrusions 21 are fixedly connected to the tops of the two second slide bars 19 at the same end. Each second slide bar 19 is sleeved with a second spring 20 at the top of the oil baffle plate 18. The arrangement of the second spring 20, the oil baffle plate 18 and the second slide bar 19, etc., enables the hydraulic oil at the bottom of the oil cylinder 1 to enter the top of the sliding plate 7 when the sliding plate 7 descends.

[0026] In this embodiment, a square rod 23 is fixedly connected to the middle position at the bottom of the sliding plate 7, a limiting block 25 is fixedly connected to the bottom of the square rod 23, a connecting plate 22 is slidingly sleeved on the circumferential surface of the square rod 23, a circular hole matching the square rod 23 is opened in the middle of the connecting plate 22, and a third spring 24 is sleeved on the bottom of the square rod 23.

[0027] In this embodiment, the two ends of the connecting plate 22 are fixedly connected with the same circular ring 26, and four oil outlet holes 10 are opened on the top edge of the sliding plate 7. The oil outlet holes 10 are adapted to the circular ring 26. The arrangement of the oil outlet holes 10, the circular ring 26 and the third spring 24 enables the hydraulic oil at the top of the oil cylinder 1 to smoothly and slowly return to the bottom of the sliding plate 7 when the buffer spring 4 rebounds.

[0028] In this embodiment, the bottom of the oil cylinder 1 is fixedly connected to the lower sleeve 2, the outer bottom of the lower sleeve 2 is fixedly connected to the first connecting member 201, the top of the connecting rod 8 is fixedly connected to the upper sleeve 3, and the outer top of the upper sleeve 3 is fixedly connected to the second connecting member 301.

[0029] In this embodiment, a common buffer spring 4 is sleeved between the lower sleeve 2 and the upper sleeve 3 .

[0030] Working principle: When in use, the oil cylinder 1 is filled with hydraulic oil. When the device is in the initial position, due to the action of the magnet 5, the two iron blocks 17 are attracted by the sliding plate 7, so that the two L-shaped baffles 14 compress the adjacent first springs 16. At this time, the two second oil inlet holes 13 are in an open state. When the buffer spring 4 is compressed by a momentary large pressure, the sliding plate 7 and the rubber sealing ring 6 descend, and the hydraulic oil at the bottom of the oil cylinder 1 can enter the top of the sliding plate 7 through the two second oil inlet holes 13. At the same time, the large pressure of the hydraulic oil can also push the oil baffle 18, so that the second spring 20 is compressed. At the moment when the buffer spring 4 is subjected to a large pressure, the hydraulic oil can enter the top of the sliding plate 7 through the two first oil inlet holes 11 and the second oil inlet holes 13, thereby improving the buffering capacity of the device being compressed. When the sliding plate 7 descends, , the iron block 17 is separated from the magnet 5. At this time, under the action of the first sliding rod 15, the two second oil inlet holes 13 are blocked. At this time, the hydraulic oil can only enter the top of the sliding plate 7 through the first oil inlet hole 11, so as to reduce the moving distance of the sliding plate 7. When the sliding plate 7 rebounds, the hydraulic oil at the top is compressed by the squeezing ring 26, and enters the bottom of the oil cylinder 1 through the four oil outlet holes 10. In this way, when the buffer spring 4 is subjected to a momentary large pressure, the device has a better buffering and shock absorbing effect. When the buffer spring 4 is subjected to a small pressure, at the initial stage of the movement of the sliding plate 7, the hydraulic oil enters the top of the sliding plate 7 through the two second oil inlet holes 13, and the oil baffles 18 on the top of the two first oil inlet holes 11 will not be pushed open until the second oil inlet holes 13 are blocked, and then they can be opened automatically, so that the shock absorbing and buffering effect of the device will not be too weak.

[0031] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0032] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0033] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A hydraulic shock absorbing device for machinery, comprising an oil cylinder (1), characterized in that: A magnet (5) is fixedly connected to the top of the inner side of the oil cylinder (1); a connecting rod (8) is provided on the top sliding sleeve of the oil cylinder (1); a circular hole matching the connecting rod (8) is provided on the top of the oil cylinder (1); a rubber ring (9) is fixedly connected to the middle of the top of the oil cylinder (1); a circular hole matching the connecting rod (8) is provided on the rubber ring (9); a sliding plate (7) is fixedly connected to the bottom of the connecting rod (8); a rubber sealing ring (6) is fixedly connected to the circumferential surface of the sliding plate (7); the rubber sealing ring (6) is in contact with the circumferential inner wall of the oil cylinder (1); rectangular grooves (12) are provided on both sides of the top of the sliding plate (7); a pressure relief mechanism is provided in each of the rectangular grooves (12); the pressure relief mechanism includes The invention comprises two first slide bars (15) fixedly connected to one side of the rectangular groove (12); the circumferential surface of the two first slide bars (15) is slidably sleeved with the same L-shaped baffle plate (14); both sides of the L-shaped baffle plate (14) are provided with round holes matched with the first slide bars (15); the other ends of the two first slide bars (15) are fixedly connected with the same limit plate; the ends of the two first slide bars (15) close to the side wall of the rectangular groove (12) are sleeved with a first spring (16); the top of the L-shaped baffle plate (14) is fixedly connected with an iron block (17), and the iron block (17) is matched with the magnet (5); and the ends of the two rectangular grooves (12) close to the L-shaped baffle plate (14) are provided with a second oil inlet hole (13).

2. The hydraulic shock absorbing device for machinery according to claim 1, characterized in that: The sliding plate (7) is symmetrically provided with first oil inlet holes (11) at both ends of the top, and second slide bars (19) are fixedly connected to both sides of the top of each of the first oil inlet holes (11). The circumferential surfaces of the two second slide bars (19) at the same end are slidably sleeved with the same oil baffle plate (18). The two ends of the oil baffle plate (18) are provided with circular holes matched with the second slide bars (19). The tops of the two second slide bars (19) at the same end are fixedly connected with protrusions (21), and each of the second slide bars (19) is sleeved with a second spring (20) at the top of the oil baffle plate (18).

3. The hydraulic shock absorbing device for machinery according to claim 1, characterized in that: A square rod (23) is fixedly connected to the middle position of the bottom of the sliding plate (7), a limit block (25) is fixedly connected to the bottom of the square rod (23), a connecting plate (22) is slidingly sleeved on the circumferential surface of the square rod (23), a circular hole matching the square rod (23) is opened in the middle of the connecting plate (22), and a third spring (24) is sleeved on the bottom of the square rod (23).

4. The hydraulic shock absorbing device for machinery according to claim 3, characterized in that: The two ends of the connecting plate (22) are fixedly connected to a same circular ring (26), and the top edge of the sliding plate (7) is provided with four oil outlet holes (10), and the oil outlet holes (10) are adapted to the circular ring (26).

5. The hydraulic shock absorbing device for machinery according to claim 1, characterized in that: The bottom of the oil cylinder (1) is fixedly connected to a lower sleeve (2), the outer bottom of the lower sleeve (2) is fixedly connected to a first connecting piece (201), the top of the connecting rod (8) is fixedly connected to an upper sleeve (3), and the outer top of the upper sleeve (3) is fixedly connected to a second connecting piece (301).

6. The hydraulic shock absorbing device for machinery according to claim 5, characterized in that: A common buffer spring (4) is sleeved between the lower sleeve (2) and the upper sleeve (3).

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