Damping device and compressor

Abstract

The application discloses a damping device and a compressor. The damping device comprises a damping unit, the damping unit comprises an upper part and a lower part which move up and down relative to each other, the upper part comprises a cavity part and a slider below the cavity part, the slider is telescopically matched in the cavity of the cavity part, a jack is arranged on the slider and communicates the inside and outside of the cavity, a groove is arranged on the end face of the slider inside the cavity, the groove communicates with the jack, and the farther the groove is from the jack, the smaller the depth of the groove is; a pushing part corresponding to the slider and a telescopic head matched with the jack are arranged on the lower part, a hydraulic cavity is further arranged on the lower part, the telescopic head is controlled to be telescopically expanded and contracted by the liquid in the hydraulic cavity, and a plurality of elastic buffer balls are arranged in the jack. The application realizes the damping effect and the damping effect by extruding the damping balls, so that the damping effect and the function of quickly dissipating the vibration capacity are realized.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of shock absorption technology, in particular to a shock absorption device and a compressor. BACKGROUND

[0002] The compressor is a core driving component in an air conditioner, which drives the air conditioner to work, but it also produces vibration and noise while playing a role, which affects the use effect and service life of the air conditioner. It is a persistent problem to ensure the normal operation of the compressor while solving the vibration and noise problems caused by it.

[0003] The vibration and noise problem of the horizontal compressor is more prominent, which is mainly limited by its working environment and installation conditions. The horizontal compressor is mostly used in vehicle-mounted air conditioners. The working environment of the automobile is complex and the space is compact, so the structure of the vehicle-mounted air conditioner not only needs to meet the installation requirements, but also needs to meet the environmental vibration conditions and weight requirements. The vibration of the compressor itself, the environmental vibration brought by the automobile and the limitation of the structure of the air conditioner itself make this type of compressor face huge vibration and noise problems, especially the horizontal compressor. In order to meet the environmental vibration requirements, the rigid connection between the base and the air conditioner shell aggravates the occurrence of this problem.

[0004] The rigid connection between the base of the horizontal compressor and the air conditioner shell causes the compressor and the connected parts to resonate at multiple frequency points, especially at low frequency, which also produces obvious noise problems. SUMMARY

[0005] In order to solve the problem of compressor vibration, the present application provides a shock absorption device and a compressor, which sets a damping ball in two parts in relative motion, and realizes shock absorption and damping effect by extruding the damping ball, so as to realize the effect of shock absorption and rapid dissipation of vibration capacity.

[0006] The technical scheme adopted by the present application is to design a shock absorption device, which comprises a damping unit, the damping unit comprises an upper part and a lower part in relative motion, the upper part comprises a cavity part and a sliding block below the cavity part, the sliding block is telescopic in the cavity of the cavity part, a jack is arranged on the sliding block and communicates the inside and outside of the cavity, a groove is arranged on the end face of the sliding block inside the cavity, the groove communicates with the jack, and the part farther from the jack has smaller depth; the lower part is provided with a pushing part corresponding to the sliding block and a telescopic head matched with the jack, the lower part is also provided with a hydraulic chamber, the telescopic head is controlled to stretch and retract by the liquid in the hydraulic chamber, the hydraulic chamber has a pressure control port facing the cavity part, the cavity part is provided with a piston matched with the pressure control port, and a plurality of elastic buffer balls are arranged in the jack.

[0007] In some embodiments, the plurality of grooves are evenly distributed in the circumferential direction of the insertion hole, and the length direction of the grooves is arranged along the radial direction of the insertion hole, and the grooves are simultaneously communicated by an annular groove concentric with the insertion hole.

[0008] In some embodiments, the plurality of grooves are four.

[0009] In some embodiments, the pressure control port is at least two, and the pressure control ports are symmetrically arranged with respect to the telescopic head.

[0010] In some embodiments, the hydraulic chamber includes an upper hydraulic chamber and a lower hydraulic chamber arranged in sequence in the up-down direction, the pressure control port is in sequence communicated with the upper hydraulic chamber and the lower hydraulic chamber in the up-down direction, the telescopic head is controlled to be telescopic by the upper hydraulic chamber, and the lower part is further provided with a limiting rod corresponding to the cavity part, and the limiting rod is controlled to be telescopic by the liquid in the lower hydraulic chamber.

[0011] In some embodiments, the limiting rod is at least two, and the limiting rods are symmetrically arranged with respect to the telescopic head.

[0012] In some embodiments, the upper part or / and the lower part is provided with a buffer having a rigidity greater than that of the damping unit.

[0013] In some embodiments, the thrust part is provided with a through hole, and the telescopic head is arranged in the through hole.

[0014] In some embodiments, a plurality of upper parts are stacked up and down, the cavity part of the lower upper part is provided with a through hole communicated with the upper and lower slider insertion holes, and the telescopic head is simultaneously telescopic and matched in the insertion hole of the plurality of upper parts.

[0015] In some embodiments, horizontal buffers are arranged in four directions in the circumferential direction of the slider or the cavity.

[0016] In some embodiments, the damping unit is provided with an upper buffer assembly and a lower buffer assembly in sequence in the up-down direction, and the rigidity of the lower buffer assembly is greater than that of the upper buffer assembly.

[0017] Compressor comprising the damping device.

[0018] Compared with the prior art, the present application has the following beneficial effects:

[0019] 1. The present application utilizes the extrusion of the damping ball by the relative motion component, utilizes the deformation of the elastic buffer ball to play the role of buffering, utilizes the rolling friction between the elastic buffer balls to play the role of damping dissipation of vibration energy, utilizes the change of the interval to make the distribution and rolling resistance of the elastic buffer ball in the cavity change to adapt to the size change of the vibration, has certain self-adaptability, and thus has good damping and damping effect.

[0020] 2. The present application controls the relative position of the damping structure and the outer shell through the one-way constraint of the limiting support structure, limits the vertical displacement of the compressor cylinder, prevents the vertical large displacement of the compressor cylinder due to the excessive elasticity of the limiting damping device, and reduces the ability of resisting environmental vibration.

[0021] 3. The three-way damping device with limiting function of the present application realizes the effect of effectively relieving vibration through the cooperation of the upper damping structure, the spiral spring, the buffer block, the elastic buffer ball, the hydraulic limiting structure and the lower damping structure, and realizes certain limiting function. BRIEF DESCRIPTION OF DRAWINGS

[0022] The present application will be described in detail below in combination with specific embodiments and drawings. In order to show details, facilitate understanding of the principles, it is not necessarily drawn to scale, and similar reference numerals can describe similar parts in different views. The drawings generally show the embodiments discussed herein in an exemplary and non-limiting manner. Among them:

[0023] Figure 1 is a schematic view of a compressor.

[0024] Figure 2 is a schematic view of a support leg of a compressor.

[0025] Figure 3 is a top view of Figure 2 .

[0026] Figure 4 is a schematic view of the B-B section of Figure 3 .

[0027] Figure 5 is an exploded view of a support leg.

[0028] Figure 6 is a schematic view of the hydraulic limiting structure 16 part.

[0029] Figure 7 is a schematic view of another angle of Figure 6 .

[0030] Figure 8 is a schematic view of a groove matched with an elastic buffer ball.

[0031] Figure 9is a schematic view of a hydraulic limiting structure.

[0032] Figure 10 is a top view of a hydraulic limiting structure.

[0033] Figure 11 is Figure 10 a schematic view of A-A cross section of

[0034] Figure 12 is a schematic view of a small hydraulic prop being compressed to rise. DETAILED DESCRIPTION

[0035] The following are specific embodiments of the present application, and the technical solutions of the present application are further described in conjunction with the drawings, but the present application is not limited to these embodiments, and the following embodiments do not limit the invention involved in the claims. In addition, all combinations of features described in the embodiments are not necessarily required by the solutions of the invention.

[0036] The principles and structures of the present application are described in detail below in conjunction with the drawings and embodiments.

[0037] Embodiment one

[0038] As Figure 6 , 7 shown, a damping device includes a damping unit, the damping unit includes an upper part and a lower part moving up and down relative to each other, the upper part includes a cavity part and a square-shaped slider below the cavity part, the slider of the present embodiment includes an upper damping plate 133 and a lower damping plate 135, the slider is telescopically fitted in the cavity of the cavity part, the cavity part of the present embodiment includes an upper fixed block 136 and a lower fixed block 134, the cavity is a square-shaped slot opened on the upper fixed block 136 and the lower fixed block 134, the slider is provided with a jack on the slider, the jack is in communication with the inside and outside of the cavity, the end face of the slider on the inside of the cavity is provided with a groove, the groove of the present embodiment includes an annular groove 1331 and a radial groove 1351, the groove is in communication with the jack, the part of the groove farther away from the jack has a smaller depth; further including a hydraulic limiting structure, the hydraulic limiting structure includes a pushing part corresponding to the slider provided on the lower part and a telescopic head matched with the jack, the lower part is further provided with a hydraulic chamber, the telescopic head is controlled to telescope by the liquid in the hydraulic chamber, the hydraulic chamber has a pressure control port facing the cavity part, the cavity part is provided with a piston matched with the pressure control port, so as to control the pressure change in the hydraulic chamber, a plurality of elastic buffer balls are stacked in the jack.

[0039] In use, the upper part and the lower part are fixed on two objects which move relative to each other, so as to reduce the vibration between the two objects and provide damping effect. When the vibration makes the distance between the upper part and the lower part smaller, the pushing part pushes the slider, so that the inner end surface of the slider is closer to the cavity, and the movement of the elastic buffer balls in the grooves is resisted. When the upper part and the lower part move relative to each other, the piston extends into the pressure control port to extrude the liquid in the hydraulic chamber, the liquid pushes the telescopic head to make the telescopic head extend or retract relative to the insertion hole, the telescopic head extrudes the elastic buffer balls in the insertion hole, the deformation of the elastic buffer balls plays a buffering role, the rolling friction between the elastic buffer balls plays a role of dissipating vibration energy, and part of the elastic buffer balls are extruded into the grooves, so that the slider and the cavity also have a damping effect. When the vibration makes the distance between the upper part and the lower part larger, the pushing part moves downward, and the slider also moves downward, so that the distance between the slider and the cavity becomes larger. Since the depth of the part of the groove far from the insertion hole is smaller, the elastic buffer balls roll back to the middle insertion hole part along the groove, and thus the extrusion, dispersion and rolling of the elastic buffer balls are realized, so as to dissipate the vibration energy and have a good damping effect. The smaller the distance between the slider and the cavity, the greater the resistance of the elastic buffer balls, and thus the greater the resistance of the telescopic head to extension and retraction, so as to adaptively increase the buffering stiffness, limit the movement, have a certain adaptability, and thus have a good damping effect.

[0040] As shown in Figure 8 , a plurality of grooves are uniformly distributed around the insertion hole, the length direction of the grooves is arranged along the radial direction of the insertion hole, so that the elastic buffer balls move uniformly in the radial direction around the insertion hole, and the grooves are simultaneously communicated by an annular groove concentric with the insertion hole, so as to uniformly disperse the elastic buffer balls in the circumferential direction, and also facilitate the communication of the elastic buffer balls in different grooves, so as to utilize the rolling of the elastic buffer balls.

[0041] The insertion hole is uniformly provided with four grooves in the circumferential direction, so as to damp the movement of the slider and the cavity in four directions. The pressure control port is at least two, and the pressure control ports are symmetrically arranged relative to the telescopic head, so as to balance the force.

[0042] As shown in Figure 11 , 12As shown, the hydraulic cavity includes upper and lower hydraulic cavities arranged in sequence in the up-down direction, the pressure control port communicates with the upper and lower hydraulic cavities in sequence in the up-down direction, the telescopic head is controlled to extend and retract by the upper hydraulic cavity, and the lower part is further provided with a limiting rod corresponding to the cavity part, and the limiting rod is controlled to extend and retract by the liquid in the lower hydraulic cavity. The telescopic head moves downward along the pressure control port to increase the pressure in the hydraulic cavity, when the piston passes through the upper hydraulic cavity downward, the upper hydraulic cavity is blocked by the piston side wall, the telescopic head stops rising, and the liquid in the pressure control port enters the lower hydraulic cavity to make the limiting rod continue to rise until the limiting rod abuts against the cavity part, thereby limiting the cavity part from moving downward continuously and avoiding large vibration.

[0043] The limiting rod is at least two, and two limiting rods are arranged in the embodiment, the limiting rods are symmetrically arranged about the telescopic head, thereby generating balanced action on the cavity part. The limiting rod in the embodiment includes two small hydraulic struts 161, the small hydraulic struts 161 are provided with upper struts 1611 and lower struts 1612, and the small hydraulic struts correspond to pressure control pistons.

[0044] The upper part and / or the lower part are provided with a buffer having a rigidity greater than that of the damping unit, thereby reducing vibration by using the buffer having greater rigidity when the cavity part is limited to move by the limiting rod. The damping unit in the embodiment is provided with an upper buffer assembly and a lower buffer assembly in sequence in the up-down direction, and the rigidity of the lower buffer assembly is greater than that of the upper buffer assembly.

[0045] The middle part of the pushing part is provided with a through hole, and the telescopic head is arranged in the through hole to make the structure compact.

[0046] The upper parts are stacked in sequence in the up-down direction, the cavity part of the lower upper part is provided with a through hole communicating with the upper and lower slider insertion holes, and the telescopic head is simultaneously fitted in the insertion holes of the plurality of upper parts, thereby making the elastic buffer balls of the upper and lower stacked upper parts act simultaneously when the telescopic head extends and retracts, and improving the damping effect. The insertion holes are arranged on the lower damping plate 135, the lower fixed block 134 and the upper damping plate 133 in the embodiment.

[0047] Horizontal buffers are arranged in four directions in the circumferential direction of the slider or the cavity, thereby reducing vibration in the horizontal direction.

[0048] As shown in the drawings, Figure 1 , 2, 3, 4, 5, the embodiment is applied to the compressor bottom support seat as an example, the compressor 2 is a horizontal compressor, the compressor bottom support seat has four support legs 1, the support leg is provided with the damping device. The support leg includes an outer shell 11, an inner shell 14, the outer shell 11 is provided with a mounting hole 112; the inner shell 14 is provided with a threaded hole 141, a mounting hole 142 and a U-shaped groove 144. The outer shell 11 is connected with the compressor base 3 through the bolt assembly 111 and the mounting hole 112, and the outer shell 11 is fixedly connected with the inner shell 14 through the bolt assembly 113 and the mounting hole 142.

[0049] The upper buffer assembly includes an upper buffer plate 12 arranged at the inner end of the outer shell and six large spiral springs 131 and six large rubber columns, the upper end surface of the upper buffer plate 12 abuts against the inner end surface of the outer shell 11, the six large spiral springs 131 and the six large rubber columns 132 are inserted into the spring limiting column 1362, the spring limiting column 1362 is fixed on the upper end surface of the upper fixed block 136, one end of the large rubber column 132 abuts against the upper end surface of the upper fixed block 136, and the other end abuts against the left side of the large spiral spring 131, and the right side of the large spiral spring 131 abuts against the lower end surface of the upper buffer plate 12. The outer surface of the upper fixed block 136 is fixed with the inner surface of the rough limiting block 1361, the outer surface of the rough limiting block 1361 abuts against the inner surface of the outer shell 11, the upper damping plate 133 is embedded in the upper fixed block 136 through the square groove, the upper damping plate 133 is provided with an annular groove 1331, and the through hole of the upper damping plate 133 is filled with an elastic buffer ball 138; the lower end surface of the upper damping plate 133 abuts against the upper end surface of the lower fixed block 134, four outer surfaces of the lower fixed block 134 are provided with horizontal buffer members, the horizontal buffer members include a spring limiting column 1342, four small spiral springs 137 and four small rubber columns 139 are inserted on the spring limiting column 1342, one side of the small rubber column 139 abuts against the outer surface of the lower fixed block 134, the other side abuts against one end of the small spiral spring 137, the other end of the small spiral spring 137 abuts against the inner surface of the outer shell 11 through the U-shaped groove, the lower damping plate 135 is embedded in the lower fixed block 134 through the square groove, the lower damping plate 135 is provided with a radial groove 1351, the through hole of the lower damping plate 135 is filled with an elastic buffer ball 138, and the lower fixed block 134 is provided with a piston 1341, and the lower surface of the piston 1341 is flush with the upper surface of the pressure control port 163.

[0050] As shown in Figure 9 , 10 The hydraulic limiting structure 16 includes two small hydraulic struts 161, a large hydraulic strut 162, a pressure control port 163, a mounting base 164, an upper hydraulic cavity 165 and a lower hydraulic cavity 166.

[0051] The hydraulic limiting structure 16 is fixedly connected with the inner shell 14 through a bolt assembly 143 and a base mounting hole 1641, two pressure control ports 163 are fixed on a mounting base 164, an oil inlet hole 1651 and an oil outlet hole 1661 are arranged in the pressure control port 163, left and right ends of an upper hydraulic cavity 165 are fixedly connected with the two pressure control ports 163, a lower end of the upper hydraulic cavity 165 is fixedly connected with an upper end of a lower hydraulic cavity 166, and the lower hydraulic cavity 166 is fixed on the mounting base 164; an oil cavity 1652 is arranged on the upper hydraulic cavity 165, and the oil cavity 1652 is filled with hydraulic oil; an oil cavity 1662 is arranged on the lower hydraulic cavity 166, and the oil cavity 1662 is also filled with hydraulic oil; a large hydraulic strut 162 is fixedly connected with the upper hydraulic cavity 165, and two small hydraulic struts 161 are fixedly connected with the lower hydraulic cavity 166.

[0052] The small hydraulic strut 161 is provided with an upper strut 1611 and a lower support column 1612, the large hydraulic strut 162 is provided with a telescopic head 1621 and a pushing part 1622, and the upper surface of the pushing part 1622 in the large hydraulic strut 162 is correspondingly arranged on the lower end surface of the lower damping plate 135.

[0053] When the vertical vibration of the compressor is transmitted to the outer shell 11 through the compressor base 3, the outer shell 11 is deformed by vibration, the upper buffer plate 12 abutting against the outer shell 11 absorbs part of the vibration energy, the large helical spring 131 is extruded, the large helical spring 131 extrudes the large rubber column 132, the large helical spring 131 and the large rubber column 132 are elastically deformed, part of the vibration energy generated by the compressor is absorbed, and the vibration is reduced.

[0054] The vibration is transmitted to the upper fixed block 136, the upper fixed block 136 has a tendency to drive the entire upper buffer assembly 13 to move along the inner surface of the inner shell 11, the rough limiting block 1361 has large surface roughness, and the inner surface of the inner shell 11 is rubbed, so that the entire upper buffer assembly 13 moves with the inner shell 11 in a small amount, when the upper buffer assembly 13 moves downward, the piston 1341 moves relative to the pressure control port 163, extrudes the oil in the pressure control port 163, and the hydraulic oil in the oil cavity 1652 is extruded to the large hydraulic strut 162, the large hydraulic strut 162 is started, the telescopic head 1621 rises and penetrates into the insertion hole of the lower damping plate 135, the lower fixed block 134 and the upper damping plate 133, and extrudes the elastic buffer ball 138 in the through hole of the lower damping plate 135 and the upper damping plate 133, the elastic buffer ball 138 is extruded into the annular groove 1331 and the radial groove 1351 respectively, and finally the annular groove 1331 and the radial groove 1351 are filled with the elastic buffer ball 138, the elastic buffer ball 138 and the annular groove 1331 are extruded and rubbed to generate a damping effect, the vibration energy transmitted to the upper fixed block 136 is absorbed, the vibration caused by the compressor is reduced, and the low-frequency vibration noise generated by the rigid connection between the compressor base 3 and the air conditioner shell is effectively relieved.

[0055] The radial groove is a slope groove (with an angle, 20≤α≤30). When the elastic buffer ball 138 is pressed by the telescopic head 1621 of the large hydraulic pillar 162, the elastic buffer ball 138 is filled in the radial groove, and the elastic buffer ball 138 and the radial groove 1331 are pressed and rubbed to generate a damping effect, thereby absorbing the vibration energy transmitted to the upper fixed block 136. When the telescopic head 1621 of the large hydraulic pillar 162 is retracted, the elastic buffer ball 138 in the radial groove rolls along the slope groove under the action of gravity and returns to the original position.

[0056] When the vibration of the compressor in the horizontal direction is transmitted to the outer shell 11 through the compressor base 3, the four small spiral springs 137 are pressed by the inner surface of the outer shell 11 and press the small rubber column 139, and the small spiral spring 137 and the small rubber column 139 are elastically deformed to absorb part of the vibration energy generated by the compressor and reduce the vibration. The vibration is transmitted to the lower fixed block 134, and at this time, the radial groove 1351 of the lower damping plate 135 is filled with the elastic buffer ball 138, and the elastic buffer ball 138 and the radial groove 1351 are pressed and rubbed to generate a damping effect, thereby absorbing the generated vibration energy and reducing the vibration.

[0057] When 1 / 3 of the piston 1341 enters the pressure control port 163, the hydraulic oil in the oil cavity 1662 is pressed into the lower hydraulic cavity, so that the small hydraulic pillar 161 is started, and the upper pillar 1611 rises. When the upper pillar 1611 contacts the lower fixed block 134 and the lower damping plate 135, the entire upper buffer assembly 13 is unidirectionally constrained, the relative position of the upper buffer assembly 13 and the outer shell 11 is controlled, the vertical displacement of the compressor cylinder is limited, the limiting function is realized, and the ability of the horizontal compressor to resist environmental vibration is also ensured.

[0058] The lower damping structure 15 is divided into a high-rigidity spiral spring 151, a high-hardness rubber column 152, a base 153, a stud 154, and a lower buffer plate 155. The right end surface of the lower buffer plate 155 abuts against the inner end surface of the inner shell, the left end surface of the lower buffer plate 155 abuts against one side of the high-rigidity spiral spring 151, the high-rigidity spiral spring 151 is threaded on the stud 154, the other side of the high-rigidity spiral spring 151 abuts against the right end surface of the high-hardness rubber column 152, the left end surface of the high-hardness rubber column 152 abuts against the right end surface of the base 153, one end of the stud 154 is fixed on the base 153, and the other end is fixedly connected with the inner shell 14 through the threaded hole 141. The entire lower damping structure 15 is fixed with the air conditioner shell through the base 153.

[0059] When the vertical vibration displacement of the compressor is 0mm≤Y<3mm, the upper buffer assembly 13 of the compressor works, and the lower damping structure 15 of the compressor is equivalent to a rigid structure and does not play a damping role; when the vertical vibration displacement of the compressor is 3mm≤Y<7mm (the vibration displacement of the compressor is too large to affect its normal operation), the damping effect of the upper buffer assembly 13 cannot meet the requirements, and the lower damping structure 15 starts to work. The stiffness of the high-stiffness spiral spring 151 is 400-500N / mm, and the hardness of the high-hardness rubber column 152 is 100-130HA. When the large vertical vibration of the compressor is transmitted to the inner shell 14, the lower buffer plate 155 abutting against the inner shell 14 absorbs part of the vibration energy and extrudes the high-stiffness spiral spring 151 on the left side, at the same time, the high-stiffness spiral spring 151 extrudes the high-hardness rubber column 152, the high-stiffness spiral spring 151 and the high-hardness rubber column 152 are elastically deformed, absorb the vibration energy generated by the compressor, and reduce the vertical vibration of the compressor. The high-stiffness spiral spring 151 and the high-hardness rubber column 152 cannot be compressed, control the relative position of the outer shell 11 and the lower limiting structure 15, limit the vertical displacement of the compressor cylinder, and realize the limiting function.

[0060] The length B of the outer shell is 70%-80% of the length D of the limiting damping device, the height W of the outer shell is 65%-75% of the height H of the limiting damping device, and the width of the outer shell is consistent with the width L of the limiting damping device. The height H of the limiting damping device is 45%-55% of the diameter of the compressor cylinder, the length D of the limiting damping device is 20%-30% of the height of the compressor, and the width L of the limiting damping device is 30%-40% of the diameter of the compressor cylinder. If the ratio of B to D is less than 70%, the ratio of W to H is less than 65%, the ratio of H to the diameter of the compressor cylinder is less than 45%, the ratio of D to the height of the compressor is less than 20%, and the ratio of L to the diameter of the compressor cylinder is less than 30%, the elasticity of the limiting damping device will be small and cannot realize good damping function; if the ratio of D is greater than 80%, the ratio of W to H is greater than 75%, the ratio of H to the diameter of the compressor cylinder is greater than 55%, the ratio of D to the height of the compressor is greater than 30%, and the ratio of L to the diameter of the compressor cylinder is greater than 40%, the elasticity of the limiting damping device will be too large, causing large lateral displacement of the compressor cylinder and not meeting the ability to resist environmental vibration.

[0061] Further, the hydraulic oil filling rate inside the lower hydraulic oil cavity 1652 can be set to 75%-85%, and when the piston 1341 enters the pressure control port 163, the air in the upper part of the oil is extruded, and the hydraulic oil in the oil cavity 1652 is extruded to the large hydraulic pillar 162, and the large hydraulic pillar 162 is started; the hydraulic oil filling rate inside the lower hydraulic oil cavity 1662 is 55%-65%, when 1 / 3 of the piston 1341 enters the pressure control port 163, the hydraulic oil in the lower hydraulic oil cavity 1662 is extruded to the small hydraulic pillar 161, and the two small hydraulic pillars 161 are started; the hydraulic oil filling rate inside the oil cavity is ≤90%, which can well guarantee the fluidity of the hydraulic oil.

[0062] Although some terms are used frequently herein, the possibility of using other terms is not excluded. The use of these terms is merely for the convenience of describing and explaining the nature of the application; it is against the spirit of the application to interpret them as any kind of additional limitation. The order of execution of actions, steps, etc. in the devices and methods shown in the specification and drawings can be implemented in any order, as long as the output of the previous processing is not used in the subsequent processing, unless the order is particularly limited. The use of similar ordinal terms (for example, "first", "next", "second", "again", "then" and the like) for convenience of description does not mean that such an order must be followed in implementation.

[0063] Those of ordinary skill in the art will understand that all directional references (e.g., upper, lower, upward, up, downward, down, top, bottom, left, right, vertical, horizontal, etc.) are descriptive terms used to facilitate the reader's understanding of the application, and do not indicate or imply that the application is limited to a particular orientation, position or use, unless otherwise specified. Unless otherwise specified, these orientation words do not indicate and imply that the indicated device or element must have a particular orientation or be constructed and operated in a particular orientation, and the orientation words "inner, outer" refer to the inner and outer of the contour of each component itself.

[0064] For purposes of the description hereinafter, the terms "upper", "lower", "right", "left", "rear", "front", "vertical", "horizontal", and derivatives thereof (e.g., "vertical ly", "horizontal ly", etc.) can refer to the relative positions of an apparatus or feature as shown in the drawings, and shall not be construed as limiting the present application to any particular spatial orientation. Terms concerning attachments, coupling and the like, such as "connected", "attached", "supported", and the like, can have the ordinary technical meaning, unless otherwise stated. For example, if a first device is "connected" or "attached" to a second device, that connection or attachment can be direct or through one or more other devices or features. For purposes of the description hereinafter, spatially relative terms, such as "on", "above", "at", "below", "upper", "lower", and the like, can be used to describe an element's relationship to another element as illustrated in the figures. It is to be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if an element is described as being "above" another element, it can be positioned above, below, or otherwise in a different orientation relative to the other element, as will be apparent in light of the drawings. The exemplary term "above" can include both "above" and "below", depending on the orientation of the device. The device can be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly. The terms "first", "second", and the like, do not necessarily have an ordinal meaning by themselves, unless otherwise indicated. For example, a first device can be a device that is connected first, a device that is connected second, or the like, unless otherwise indicated.

[0065] In addition, some terms can be used interchangeably, such as "approximately", "substantially", "largely", and the like, to refer to slight inaccuracy or slight deviation in a condition, quantity, value, or dimension, etc., some of which are within a manufacturing deviation or tolerance range. It is to be noted that the use of the terms "first", "second", etc., to describe various components, is merely intended to differentiate one component from another, and is not meant to limit the scope of the present application, unless otherwise indicated. The use of the terms "first", "second", etc., to describe various components, is merely intended to differentiate one component from another, and is not meant to limit the scope of the present application, unless otherwise indicated.

[0066] The specific embodiments described herein have many advantages resulting from the particular nature of the application. Various modifications and changes can be made to the described specific embodiments by those skilled in the art which will be apparent from the foregoing description without departing from the spirit of the application. It is intended to cover in those claims all such modifications and changes that fall within the scope of the application.

Claims

1. Damping device, characterized in that The damping unit comprises upper and lower parts in opposite motion, the upper part comprises a cavity part and a slider below the cavity part, the slider is telescopically fitted in the cavity of the cavity part, a jack is arranged on the slider to communicate the inside and outside of the cavity, a groove is arranged on the end face of the slider inside the cavity, the groove communicates with the jack, the part farther from the jack has a smaller depth; the lower part is provided with a pushing part corresponding to the slider and a telescopic head matched with the jack, the lower part is also provided with a hydraulic chamber, the telescopic head is controlled to telescope by the liquid in the hydraulic chamber, the hydraulic chamber has a pressure control port facing the cavity part, the cavity part is provided with a piston matched with the pressure control port, and a plurality of elastic buffer balls are arranged in the jack.

2. The shock absorbing device of claim 1, wherein The jacks are circumferentially and uniformly distributed with a plurality of grooves, the length direction of the grooves is arranged along the radial direction of the jacks, and the grooves are simultaneously communicated by an annular groove concentric with the jacks.

3. The shock absorbing device of claim 2, wherein, The jacks are circumferentially and uniformly distributed with four grooves.

4. The shock absorbing device of claim 1, wherein The pressure control port is at least two, and the pressure control ports are symmetrically arranged about the telescopic head.

5. The shock absorbing device of claim 1, wherein, The hydraulic chamber comprises an upper hydraulic chamber and a lower hydraulic chamber arranged in sequence in the up-down direction, the pressure control port is in sequence communicated with the upper hydraulic chamber and the lower hydraulic chamber in the up-down direction, the telescopic head is controlled to telescope by the upper hydraulic chamber, and the lower part is also provided with a limiting rod corresponding to the cavity part, and the limiting rod is controlled to telescope by the liquid in the lower hydraulic chamber.

6. The shock absorbing device of claim 5, wherein, The limiting rod is at least two, and the limiting rods are symmetrically arranged about the telescopic head.

7. The shock absorbing device of claim 5, wherein, The upper part or / and the lower part is provided with a buffer member with a greater rigidity than the damping unit.

8. The shock absorbing device of claim 1, wherein, The telescopic head is slidably arranged in the through hole in the middle of the pushing part.

9. The shock absorbing device of claim 1, wherein, A plurality of upper parts are stacked up and down, the cavity part of the lower upper part is provided with a through hole communicating the jack jacks of the upper and lower sides, and the telescopic head is simultaneously telescoped and fitted in the jacks of a plurality of upper parts.

10. The shock absorbing device of claim 1, wherein, Horizontal buffer members are respectively arranged in the four directions of the circumference of the slider or the cavity.

11. The shock absorbing device of claim 1, wherein, The damping unit is respectively provided with an upper buffer assembly and a lower buffer assembly, and the rigidity of the lower buffer assembly is greater than that of the upper buffer assembly.

12. Compressor, characterized in that The damping device comprises the damping unit according to any one of claims 1 to 11.

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