Novel buffer device of hydraulic valve driving device

Abstract

The utility model relates to the technical field of hydraulic valves, and discloses a novel buffer device of a hydraulic valve driving device, which comprises a hydraulic cylinder body, a flow valve chamber fixedly mounted at the bottom of the hydraulic cylinder body, and a buffer chamber fixedly mounted at the top of the hydraulic cylinder body, and the buffering assembly is arranged on the side wall of the hydraulic cylinder body and comprises a buffering mechanism installed on the top of the hydraulic cylinder body, one end of the buffering mechanism is located on the inner wall of the buffering chamber, and an auxiliary mechanism is installed on the inner wall of the hydraulic cylinder body. The utility model solves the problem that the service life of the device is shortened due to the fact that a piston and a hydraulic cylinder body generate great impact force for a long time because the effect of a buffer pad is poorer when most of the existing buffer devices are buffered by independently arranged pressure springs and are buffered only by the pressure springs.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic valves, in particular to a buffer device of a novel hydraulic valve driving device. Background Art

[0002] Hydraulic buffers are mostly hydraulic buffers, and rely on hydraulic damping to buffer and decelerate the objects acting on them to a stop, playing a certain degree of protection. They are suitable for mechanical equipment such as lifting and transportation, elevators, metallurgy, port machinery, and railway vehicles. Their function is to prevent hard collisions from causing damage to internal mechanisms during work. Safety buffers, but the piston rods of hydraulic cylinders still have a certain mass and have a large momentum when moving under the drive of hydraulics. At the end of their stroke, when the rod head enters the end cover and the bottom of the hydraulic cylinder, it will cause mechanical collisions, generating large impact pressure and noise. Buffers are used to avoid such mechanical collisions, but the ultimate pressure still exists, which is about twice the rated working pressure, which will inevitably seriously affect the strength and normal operation of the hydraulic cylinder and the entire hydraulic system. When the new hydraulic valve is in use, the buffer device of the new hydraulic valve drive device will also be used;

[0003] Most of the existing buffer devices perform buffering work through independently arranged pressure springs. When buffering is performed only through pressure springs, the effect of the buffer pad is poor, so that a large impact force is generated between the piston and the hydraulic cylinder body, which will reduce the service life of the device over a long period of time. Utility Model Content

[0004] The purpose of the utility model is to provide a novel buffer device for a hydraulic valve driving device, so as to solve the problem raised in the above-mentioned background technology.

[0005] To achieve the above purpose, the utility model provides the following technical solutions: a novel buffer device for a hydraulic valve driving device, comprising a hydraulic cylinder body,

[0006] A flow valve chamber fixedly mounted at the bottom of the hydraulic cylinder body;

[0007] A buffer chamber fixedly mounted on the top of the hydraulic cylinder body;

[0008] and a buffer assembly arranged on the side wall of the hydraulic cylinder body;

[0009] The buffer assembly comprises a buffer mechanism installed at the top of the hydraulic cylinder body, and one end of the buffer mechanism is located at the inner wall of the buffer chamber;

[0010] An auxiliary mechanism is installed on the inner wall of the hydraulic cylinder body, and one end of the auxiliary mechanism is connected to one end of the buffer mechanism.

[0011] Preferably, an oil inlet valve is fixedly installed on the right side wall of the buffer chamber, and the inner wall of the oil inlet valve is connected to the inner wall of the hydraulic cylinder body. An oil outlet valve is fixedly installed on the left side wall of the buffer chamber, and the inner wall of the oil outlet valve is connected to the interior of the hydraulic cylinder body. The oil inlet valve and the oil outlet valve are used to facilitate the operator to add and remove oil from the hydraulic cylinder body.

[0012] Preferably, the auxiliary mechanism includes a piston, which is slidably mounted on the inner wall of the hydraulic cylinder body, a stabilizing block is fixedly mounted on the inner wall of the piston, a rubber friction block is fixedly mounted on the side wall of the stabilizing block, the side wall of the rubber friction block is fixedly connected to the side wall of the piston, the side wall of the rubber friction block is slidably connected to the inner wall of the inner wall of the hydraulic cylinder body having a slide groove, a lower valve stem is fixedly mounted on the bottom of the stabilizing block, one end of the lower valve stem movably penetrates the inner wall of the hydraulic cylinder body and extends to the inner wall of the flow valve chamber, a valve plate is fixedly mounted on the bottom of the lower valve stem, the side wall of the valve plate is slidably connected to the inner wall of the flow valve chamber, an upper valve stem is fixedly mounted on the top of the stabilizing block, the upper valve stem movably penetrates the top of the hydraulic cylinder body and extends to the inner wall of the buffer chamber, and the side wall of the upper valve stem is slidably connected to the side wall of the buffer chamber.

[0013] Preferably, there are six rubber friction blocks, the shapes and sizes of the six rubber friction blocks are equal, and the six rubber friction blocks are equidistantly installed on the side walls of the stabilizing block. When the positions of the rubber friction blocks are moved, there is a certain friction between the side walls of the rubber friction blocks and the inner walls of the hydraulic cylinder body.

[0014] Preferably, the buffer mechanism includes a connecting block 2 and a pad, the inner wall of the pad is fixedly connected to the inner wall of the upper valve stem, a buffer spring is fixedly installed on the top of the pad, a support block is fixedly installed on the other end of the buffer spring, and the side wall of the support block is fixedly connected to the inner wall of the buffer chamber.

[0015] Preferably, the side wall of the connecting block 2 is fixedly connected to the side wall of the upper valve stem, the inner wall of the connecting block 2 is hingedly installed with a connecting rod, the other end of the connecting rod is hingedly installed with the connecting block 1, the side wall of the connecting block 1 is fixedly installed with a compression spring, and the inner wall of the connecting block 1 is slidably installed with a limiting rod.

[0016] Preferably, one end of the limiting rod is fixedly connected to the inner wall of the buffer chamber, the side wall of the compression spring is slidably connected to the side wall of the limiting rod, and the number of the compression springs is five.

[0017] The utility model provides a novel buffer device for a hydraulic valve driving device, which has the following beneficial effects:

[0018] (1) When the upper valve stem of the utility model moves, the position of the connecting block 2 will be lifted. Under the joint action of the connecting rod, the connecting block 1, the limit rod and the compression spring, the connecting block 2 can achieve buffering. The upper valve stem can also lift the position of the pad. Under the action of the buffer spring and the support block, the pad can achieve further buffering, which solves the problem that most of the existing buffer devices perform buffering work through independently arranged pressure springs. When the buffering is performed only through the pressure spring, the effect of the buffer pad is poor, so that the piston and the hydraulic cylinder body generate a large impact force, which will reduce the service life of the device over a long period of time.

[0019] (2) When the utility model is used by an operator, the operator can inject oil into the interior of the hydraulic cylinder body through the oil inlet valve. When water flows through the valve port on the side wall of the flow valve chamber, the water flows to the inner wall of the flow valve chamber. When the water flow is large, the position of the valve plate can be driven to rise. Under the joint action of the lower valve stem, the stabilizing block, the piston and the rubber friction block, the side wall of the rubber friction block will slide with the inner wall of the hydraulic cylinder body. There is a certain friction between the side wall of the rubber friction block and the inner wall of the hydraulic cylinder body, and the pressure of the valve plate can be buffered by the friction. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the appearance structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the cross-sectional structure of the utility model;

[0022] Figure 3 It is a partial structural schematic diagram of the buffer mechanism of the utility model;

[0023] Figure 4 It is a structural schematic diagram of the auxiliary mechanism of the utility model;

[0024] Figure 5 For this utility model Figure 2 A partial enlarged view of middle A.

[0025] In the figure: 1. hydraulic cylinder body; 2. flow valve chamber; 3. buffer chamber; 4. buffer assembly; 41. buffer mechanism; 411. pad; 412. buffer spring; 413. support block; 414. compression spring; 415. connecting block 1; 416. connecting rod; 417. connecting block 2; 418. limit rod; 42. auxiliary mechanism; 421. piston; 422. stabilizing block; 423. rubber friction block; 424. upper valve stem; 425. lower valve stem; 426. valve plate; 5. oil outlet valve; 6. oil inlet valve. DETAILED DESCRIPTION

[0026] In order to have a clearer understanding of the technical features, purposes and effects of the utility model, the specific implementation methods of the utility model are now described with reference to the accompanying drawings. Example 1

[0027] A preferred embodiment of a buffer device of a novel hydraulic valve driving device provided by the utility model is as follows Figures 1 to 5 As shown: A novel buffer device of a hydraulic valve driving device comprises a hydraulic cylinder body 1,

[0028] A flow valve chamber 2 is fixedly mounted on the bottom of the hydraulic cylinder body 1;

[0029] A buffer chamber 3 is fixedly installed on the top of the hydraulic cylinder body 1, an oil inlet valve 6 is fixedly installed on the right wall of the buffer chamber 3, and the inner wall of the oil inlet valve 6 is connected to the inner wall of the hydraulic cylinder body 1. An oil outlet valve 5 is fixedly installed on the left wall of the buffer chamber 3, and the inner wall of the oil outlet valve 5 is connected to the inside of the hydraulic cylinder body 1. The oil inlet valve 6 and the oil outlet valve 5 facilitate the operator to add and remove the oil inside the hydraulic cylinder body 1;

[0030] and a buffer assembly 4 arranged on the side wall of the hydraulic cylinder body 1;

[0031] The buffer assembly 4 includes a buffer mechanism 41 installed at the top of the hydraulic cylinder body 1, and one end of the buffer mechanism 41 is located at the inner wall of the buffer chamber 3;

[0032] An auxiliary mechanism 42 is installed on the inner wall of the hydraulic cylinder body 1 , and one end of the auxiliary mechanism 42 is connected to one end of the buffer mechanism 41 .

[0033] The buffer mechanism 41 includes a connecting block 417 and a pad 411, the inner wall of the pad 411 is fixedly connected to the inner wall of the upper valve stem 424, a buffer spring 412 is fixedly installed on the top of the pad 411, and a support block 413 is fixedly installed on the other end of the buffer spring 412, and the side wall of the support block 413 is fixedly connected to the inner wall of the buffer chamber 3.

[0034] In this embodiment, the side wall of the connecting block 2 417 is fixedly connected to the side wall of the upper valve stem 424, the inner wall of the connecting block 2 417 is hingedly installed with a connecting rod 416, the other end of the connecting rod 416 is hingedly installed with a connecting block 1 415, the side wall of the connecting block 1 415 is fixedly installed with a compression spring 414, and the inner wall of the connecting block 1 415 is slidably installed with a limiting rod 418.

[0035] Furthermore, one end of the limiting rod 418 is fixedly connected to the inner wall of the buffer chamber 3, and the side wall of the compression spring 414 is slidably connected to the side wall of the limiting rod 418, and the number of the compression springs 414 is five.

[0036] During the specific implementation process, when the position of the upper valve stem 424 moves, the position of the connecting block 417 will be lifted. When the connecting block 417 is lifted, one end of the connecting rod 416 will be squeezed. The connecting rod 416 further squeezes the position of the connecting block 415. The connecting block 415 will slide on the side wall of the limiting rod 418. When the connecting block 415 moves, it will also squeeze the position of the compression spring 414 to achieve buffering again. The upper valve stem 424 will also drive the position of the pad 411 to be lifted. The pad 411 will squeeze one end of the buffer spring 412. The other end of the buffer spring 412 will squeeze the bottom of the support block 413 to achieve further buffering. Example 2

[0037] On the basis of Example 1, a preferred embodiment of a buffer device of a new hydraulic valve driving device provided by the utility model is as follows: Figures 1 to 5 As shown: the auxiliary mechanism 42 includes a piston 421, which is slidably mounted on the inner wall of the hydraulic cylinder body 1, a stabilizing block 422 is fixedly mounted on the inner wall of the piston 421, a rubber friction block 423 is fixedly mounted on the side wall of the stabilizing block 422, the side wall of the rubber friction block 423 is fixedly connected to the side wall of the piston 421, the side wall of the rubber friction block 423 is slidably connected to the inner wall of the hydraulic cylinder body 1 with a slide groove, a lower valve stem 425 is fixedly mounted on the bottom of the stabilizing block 422, one end of the lower valve stem 425 movably penetrates the inner wall of the hydraulic cylinder body 1 and extends to the inner wall of the flow valve chamber 2, a valve plate 426 is fixedly mounted on the bottom of the lower valve stem 425, the side wall of the valve plate 426 is slidably connected to the inner wall of the flow valve chamber 2, an upper valve stem 424 is fixedly mounted on the top of the stabilizing block 422, the upper valve stem 424 movably penetrates the top of the hydraulic cylinder body 1 and extends to the inner wall of the buffer chamber 3, and the side wall of the upper valve stem 424 is slidably connected to the side wall of the buffer chamber 3.

[0038] In this embodiment, there are six rubber friction blocks 423, and the shapes and sizes of the six rubber friction blocks 423 are equal. The six rubber friction blocks 423 are equidistantly installed on the side walls of the stabilizing block 422. When the position of the rubber friction block 423 moves, there is a certain friction between the side walls of the rubber friction block 423 and the inner wall of the hydraulic cylinder body 1.

[0039] During the specific implementation process, when the operator uses the device, the operator can inject oil into the interior of the hydraulic cylinder body 1 through the oil inlet valve 6. When the water flows through the valve port on the side wall of the flow valve chamber 2, the water will flow to the inner wall of the flow valve chamber 2. When the water flow is large, the position of the valve plate 426 can be driven to be lifted, and the valve plate 426 will drive the position of the lower valve stem 425 to be lifted. The lower valve stem 425 further drives the position of the stabilizing block 422 to move. The stabilizing block 422 is lifted by the position of the piston 421 and the rubber friction block 423. The side wall of the rubber friction block 423 will slide with the inner wall of the hydraulic cylinder body 1. There is a certain friction between the side wall of the rubber friction block 423 and the inner wall of the hydraulic cylinder body 1, and the pressure of the valve plate 426 can be buffered by the friction.

[0040] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A novel buffer device for a hydraulic valve driving device, comprising a hydraulic cylinder body (1), A flow valve chamber (2) fixedly mounted on the bottom of the hydraulic cylinder body (1); A buffer chamber (3) fixedly mounted on the top of the hydraulic cylinder body (1); and a buffer assembly (4) arranged on the side wall of the hydraulic cylinder body (1); characterized in that: The buffer assembly (4) comprises a buffer mechanism (41) installed at the top of the hydraulic cylinder body (1), and one end of the buffer mechanism (41) is located at the inner wall of the buffer chamber (3); An auxiliary mechanism (42) is installed on the inner wall of the hydraulic cylinder body (1), and one end of the auxiliary mechanism (42) is connected to one end of the buffer mechanism (41).

2. A buffer device for a new hydraulic valve driving device according to claim 1, characterized in that: An oil inlet valve (6) is fixedly mounted on the right side wall of the buffer chamber (3), and the inner wall of the oil inlet valve (6) is connected to the inner wall of the hydraulic cylinder body (1). An oil outlet valve (5) is fixedly mounted on the left side wall of the buffer chamber (3), and the inner wall of the oil outlet valve (5) is connected to the interior of the hydraulic cylinder body (1).

3. The buffer device of the novel hydraulic valve driving device according to claim 1 is characterized in that: The auxiliary mechanism (42) comprises a piston (421), the piston (421) being slidably mounted on the inner wall of the hydraulic cylinder body (1), a stabilizing block (422) being fixedly mounted on the inner wall of the piston (421), a rubber friction block (423) being fixedly mounted on the side wall of the stabilizing block (422), the side wall of the rubber friction block (423) being fixedly connected to the side wall of the piston (421), the side wall of the rubber friction block (423) being slidably connected to the inner wall of the hydraulic cylinder body (1) in which a slide groove is provided, and a lower valve stem ( 425), one end of the lower valve stem (425) movably penetrates the inner wall of the hydraulic cylinder body (1) and extends to the inner wall of the flow valve chamber (2), a valve plate (426) is fixedly installed at the bottom of the lower valve stem (425), and the side wall of the valve plate (426) is slidably connected to the inner wall of the flow valve chamber (2), and an upper valve stem (424) is fixedly installed on the top of the stabilizing block (422), and the upper valve stem (424) movably penetrates the top of the hydraulic cylinder body (1) and extends to the inner wall of the buffer chamber (3), and the side wall of the upper valve stem (424) is slidably connected to the side wall of the buffer chamber (3).

4. The buffer device of the novel hydraulic valve driving device according to claim 3 is characterized in that: There are six rubber friction blocks (423), the six rubber friction blocks (423) are all equal in shape and size, and the six rubber friction blocks (423) are respectively installed at equidistant positions on the side wall of the stabilizing block (422).

5. The buffer device of the novel hydraulic valve driving device according to claim 1 is characterized in that: The buffer mechanism (41) comprises a second connecting block (417) and a pad (411), the inner wall of the pad (411) being fixedly connected to the inner wall of the upper valve stem (424), a buffer spring (412) being fixedly mounted on the top of the pad (411), a support block (413) being fixedly mounted on the other end of the buffer spring (412), and a side wall of the support block (413) being fixedly connected to the inner wall of the buffer chamber (3).

6. The buffer device of the novel hydraulic valve driving device according to claim 5 is characterized in that: The side wall of the connecting block 2 (417) is fixedly connected to the side wall of the upper valve stem (424); a connecting rod (416) is hingedly installed on the inner wall of the connecting block 2 (417); a connecting block 1 (415) is hingedly installed on the other end of the connecting rod (416); a compression spring (414) is fixedly installed on the side wall of the connecting block 1 (415); and a limiting rod (418) is slidably installed on the inner wall of the connecting block 1 (415).

7. The buffer device of the novel hydraulic valve driving device according to claim 6 is characterized in that: One end of the limiting rod (418) is fixedly connected to the inner wall of the buffer chamber (3), and the side wall of the compression spring (414) is slidably connected to the side wall of the limiting rod (418), and the number of the compression springs (414) is five.

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