Damping device with fixed structure

Abstract

The present application discloses a damping device with a fixed structure, including a shell and a valve stem, the valve stem passes through the shell, and the valve stem and the shell are slidably sealed together, and also includes an inner shell plate, a plunger rod and an electric head assembly, the inner shell plate is arranged in the shell, the inner shell plate divides the space in the shell into a first shell cavity and a second shell cavity that are independent and connected, one end of the valve stem is slidably sealed together with the first shell cavity, and the valve stem divides the first compartment into two independent and variable volume compartments, the plunger rod is directly or indirectly slidably sealed on the plug hole, the electric head assembly is arranged on the outer wall of the shell, and the electric head assembly is used to drive the plunger rod to move. The present invention has the following beneficial effects: the shell is divided into two first shell cavities and a second shell cavity that are independent and connected, and the movement of the plunger rod is used to control the on and off of the damping liquid on both sides of the valve stem, thereby realizing the dual functions of buffering and supporting.

Description

Technical Field

[0001] The invention relates to the field of buffer materials, and in particular to a damping device with a fixed structure. Background Art

[0002] The damping rod is a commonly used buffer material at present, but the current damping rod can only play a buffering role and cannot play a fixing role, because the two ends of the damping rod will perform telescopic movement as long as force is applied.

[0003] Damping rods can be roughly divided into two categories, one is a spring-type damping rod, and the other is a liquid medium damping rod. Taking the liquid medium damping rod as an example, the reason why this type of damping rod will telescope when subjected to force is because the liquid medium is always in a flowable state. Therefore, in order for this type of damping rod to play a fixing role, the liquid must be able to switch between flowable and non-flowable. Summary of the invention

[0004] In view of the above problems, the present invention proposes a damping device with a fixed structure.

[0005] The technical solution adopted by the present invention is as follows:

[0006] A damping device with a fixed structure comprises a shell and a valve stem, wherein the valve stem passes through the shell and is slidably sealed with the shell, and further comprises an inner shell plate, a plunger rod and an electric head assembly, wherein the inner shell plate is arranged in the shell, and the inner shell plate divides the space in the shell into a first shell cavity and a second shell cavity which are independent and interconnected, one end of the valve stem is slidably sealed with the second shell cavity, and the valve stem divides the second shell cavity into two independent and variable-volume sub-cavities, a plug hole is provided in the shell, and the plunger rod is directly or indirectly slidably sealed on the plug hole, the electric head assembly is arranged on the outer wall of the shell, and the electric head assembly is used to drive the plunger rod to move; when the plunger rod is located in the first shell cavity, the plunger rod divides the first shell cavity into two independent compartments.

[0007] Compared with the traditional liquid medium damping rod, in this device, an inner shell plate is arranged in the shell to divide the inner space of the shell into an independent and interconnected first shell cavity and a second shell cavity. One end of the valve stem is slidably sealed with the cavity wall of the second shell cavity. The convection of the damping liquid on both sides of the valve stem is realized through the first shell cavity, and the plunger rod can isolate or connect the first shell cavity through its own movement. When the first shell cavity is isolated, the liquid on both sides of the valve stem cannot convect, so the valve stem cannot continue to move. When the plunger rod moves again and reopens the first shell cavity and the second shell cavity, the damping liquid on both sides of the valve stem can convect again, so the valve stem can move again.

[0008] The device divides the shell into two independent and interconnected first and second shell cavities by setting an inner shell plate, and utilizes the movement of the plunger rod to control the on and off of the damping liquid on both sides of the valve stem, thereby realizing the dual functions of buffering and supporting, and the conversion is convenient and fast.

[0009] Optionally, a valve block is provided at one section of the valve stem, and the valve block is slidably sealed with the housing and the inner shell plate.

[0010] The valve block is a part of the valve stem, which belongs to the existing mature technology.

[0011] Optionally, the housing is provided with a sealing ring, and the sealing ring is used to seal the gap between the housing and the valve stem.

[0012] Optionally, the sealing ring is located inside the housing.

[0013] The function of the sealing ring is to prevent leakage between the valve stem and the housing.

[0014] Optionally, a first connecting hole is provided on the valve stem, a second connecting hole is provided on the shell, and the first connecting hole and the second connecting hole are both located outside the shell.

[0015] Optionally, the electric head assembly is sealed in the plug hole, the plunger rod is mounted on the electric head assembly, and the electric head assembly is used to drive the plunger rod to move.

[0016] There are many ways to achieve the movement of the plunger rod on the housing. The movement of the plunger rod can be achieved through electromagnetic control between the plunger rod and the electric head assembly, or it can be achieved by motor or cylinder driving.

[0017] Optionally, the first shell cavity and the second shell cavity are filled with damping liquid.

[0018] Optionally, the cross-section of the first shell cavity is circular, oval, square or plum blossom-shaped; or the cross-section of the first shell cavity is a combination of circular, triangular and square.

[0019] This is a method for changing the damping force of the damping liquid in the shell; other methods for changing the damping force of the damping liquid can change the roughness in the first shell cavity or change the length of the first shell cavity. These three methods can change the damping force of the damping liquid in the shell.

[0020] The beneficial effects of the present invention are as follows: by setting the inner shell plate, the shell is divided into two independent and interconnected first shell chambers and second shell chambers, and the movement of the plunger rod is used to control the on and off of the damping liquid on both sides of the valve stem, thereby realizing the dual functions of buffering and supporting, and the conversion is convenient and fast. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure of a damping device with a fixed structure.

[0022] The reference numerals in the figure are: 101, valve stem, 10101, valve block, 102, sealing ring, 103, shell, 104, damping liquid, 105, inner shell plate, 106, plunger rod, 107, electric head assembly, 108, wire, 109, first connecting hole, 110, second connecting hole, 111, first shell cavity, 112, second shell cavity, 11201, sub-cavity. DETAILED DESCRIPTION

[0023] The present invention is described in detail below in conjunction with the accompanying drawings.

[0024] As attached Figure 1 As shown, a damping device with a fixed structure includes a housing 103 and a valve stem 101, the valve stem 101 penetrates the housing 103, and the valve stem 101 and the housing 103 are slidably sealed together, and also includes an inner shell plate 105, a plunger rod 106 and an electric head assembly 107, the inner shell plate 105 is arranged in the housing 103, and the inner shell plate 105 divides the space in the housing 103 into a first shell cavity 111 and a second shell cavity 112 that are independent and connected, and one end of the valve stem 101 is connected to the second shell cavity 112 The sliding seals are matched together, and the valve stem 101 divides the second shell cavity 112 into two independent and variable-volume sub-cavities 11201. The shell 103 is provided with a plug hole, and the plunger rod 106 is directly or indirectly slidingly sealed on the plug hole. The electric head assembly 107 is arranged on the outer wall of the shell 103, and the electric head assembly 107 is used to drive the plunger rod 106 to move; when the plunger rod 106 is located in the first shell cavity 111, the plunger rod 106 divides the first shell cavity 111 into two independent compartments. The electric head assembly 107 is connected to a wire 108 for supplying power to the electric head assembly 107.

[0025] Compared with the traditional liquid medium damping rod, in this device, an inner shell plate 105 is arranged in the shell 103 to divide the space inside the shell 103 into an independent and interconnected first shell cavity 111 and a second shell cavity 112. One end of the valve stem 101 is slidably sealed with the cavity wall of the second shell cavity 112. The convection of the damping liquid 104 on both sides of the valve stem 101 is realized through the first shell cavity 111, and the plunger rod 106 can isolate or connect the first shell cavity 111 through its own movement. When the first shell cavity 111 is isolated, the liquid on both sides of the valve stem 101 cannot convect, so that the valve stem 101 cannot continue to move. When the plunger rod 106 moves again and reopens the first shell cavity 111 and the second shell cavity 112, the damping liquid 104 on both sides of the valve stem 101 can convect again, so that the valve stem 101 can move again.

[0026] See attached Figure 1, the working process of the device is further described. When the plunger rod 106 does not isolate the first shell chamber 111, the valve stem 101 also has a limit value for moving to the right (that is, compression also has a limit value). Because the valve stem 101 moves to the right, the damping liquid in the right sub-chamber 11201 will flow into the left sub-chamber 11201, but the volume of the valve stem 101 entering the shell 103 increases, which will squeeze the damping liquid in the shell 103 (compress the damping liquid). Because the compression of the damping liquid also has a limit value, the valve stem 101 has a limit value for moving to the right. Similarly, after the plunger rod 106 isolates the first shell chamber 111, when the valve stem 101 moves to the right again, the damping liquid in the right sub-chamber 11201 cannot flow, but will be compressed partially. At this time, the valve stem 101 will move a certain distance to the right but cannot continue to move to the right; similarly, when the valve stem 101 moves to the left, it will not be able to continue to move further to the left due to the negative pressure in the left sub-chamber 11201.

[0027] The device divides the shell 103 into two independent and interconnected first shell chambers 111 and second shell chambers 112 by setting an inner shell plate 105, and utilizes the movement of the plunger rod 106 to control the on and off of the damping liquid 104 on both sides of the valve stem 101, thereby achieving the dual functions of buffering and supporting, and the conversion is convenient and fast.

[0028] As attached Figure 1 As shown, a valve block 10101 is provided at one section of the valve stem 101 , and the valve block 10101 is slidably and sealably matched with the housing 103 and the inner shell plate 105 .

[0029] The valve block 10101 is a part of the valve stem 101, which belongs to the existing mature technology.

[0030] As attached Figure 1 As shown, the housing 103 is provided with a sealing ring 102 , and the sealing ring 102 is used to seal the gap between the housing 103 and the valve stem 101 .

[0031] As attached Figure 1 As shown, the sealing ring 102 is located in the housing 103 .

[0032] The function of the sealing ring 102 is to prevent leakage between the valve stem 101 and the housing 103 .

[0033] As attached Figure 1 As shown, a first connecting hole 109 is disposed on the valve stem 101 , a second connecting hole 110 is disposed on the housing 103 , and both the first connecting hole 109 and the second connecting hole 110 are located outside the housing 103 .

[0034] As attached Figure 1As shown, the electric head assembly 107 is sealed and disposed in the plug hole, and the plunger rod 106 is installed on the electric head assembly 107 . The electric head assembly 107 is used to drive the plunger rod 106 to move.

[0035] There are many ways to realize the movement of the plunger rod 106 on the housing 103. The movement of the plunger rod 106 and the electric head assembly 107 can be realized by electromagnetic control, or by motor or cylinder driving.

[0036] As attached Figure 1 As shown, the first shell cavity 111 and the second shell cavity 112 are filled with damping liquid 104 .

[0037] The above description is only a preferred embodiment of the present invention, and does not limit the patent protection scope of the present invention. Any equivalent structural transformation made by using the contents of the present invention and the drawings, directly or indirectly used in other related technical fields, is also included in the protection scope of the present invention.

Claims

1. A damping device with a fixed structure, comprising a housing and a valve stem, wherein the valve stem penetrates the housing and the valve stem and the housing are slidably sealed together, characterized in that: It also includes an inner shell plate, a plunger rod and an electric head assembly, wherein the inner shell plate is arranged in the shell, and the inner shell plate divides the space in the shell into a first shell cavity and a second shell cavity which are independent and interconnected, one end of the valve stem is slidably sealed with the second shell cavity, and the valve stem divides the second shell cavity into two independent and variable-volume sub-cavities, a plug hole is provided on the shell, and the plunger rod is directly or indirectly slidably sealed on the plug hole, the electric head assembly is arranged on the outer wall of the shell, and the electric head assembly is used to drive the plunger rod to move; when the plunger rod is located in the first shell cavity, the plunger rod divides the first shell cavity into two independent compartments; the first shell cavity and the second shell cavity are filled with damping liquid; The electric head assembly is sealed in the plug hole, and the plunger rod is installed on the electric head assembly; The movement of the plunger rod is achieved by electromagnetic control between the plunger rod and the electric head assembly; The plunger rod can isolate or connect the first shell cavity through its own movement. When the first shell cavity is isolated, the liquid on both sides of the valve stem cannot convect and the valve stem cannot continue to move. When the plunger rod moves again and reopens the first shell cavity and the second shell cavity, the damping liquid on both sides of the valve stem can convect again and the valve stem can move again.

2. The damping device with a fixing structure according to claim 1, characterized in that: A valve block is arranged at one end of the valve stem, and the valve block is slidably and sealingly matched with the shell body and the inner shell plate.

3. The damping device with a fixing structure according to claim 1, characterized in that: The housing is provided with a sealing ring, and the sealing ring is used to seal the gap between the housing and the valve stem.

4. The damping device with a fixing structure according to claim 3, characterized in that: The sealing ring is located in the housing.

5. The damping device with a fixing structure according to claim 1, characterized in that: The valve stem is provided with a first connecting hole, the shell is provided with a second connecting hole, and the first connecting hole and the second connecting hole are both located outside the shell.

6. The damping device with a fixing structure according to claim 1, characterized in that: The cross section of the first shell cavity is circular, elliptical, square or plum blossom-shaped; or the cross section of the first shell cavity is a combination of circular, triangular and square shapes.

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