CN209761146U - axle center and use its hydraulic floor spring - Google Patents

Abstract

The utility model relates to a floor spring technical field discloses an axle center. The shaft center includes: the axle center body comprises a cylinder body with an opening at the bottom end; the shaft neck is connected with the bottom end opening of the cylinder body in a sealing manner so as to form a balance cavity between the shaft neck and the cylinder body; and the compression assembly is arranged in the balance cavity and hermetically separates the balance cavity into a first cavity and a second cavity. Wherein, the top end of the axle center body is provided with a first channel, one end of which is communicated with the first cavity and the other end of which is communicated with the outside; the shaft neck is internally provided with a second channel, one end of the second channel is communicated with the second cavity, and the other end of the second channel is communicated with the outside, so that when pressure difference exists between the first channel and the second channel, the compression assembly can change the volumes of the first cavity and the second cavity through reciprocating motion in the balance cavity so as to balance the pressure in the first channel and the second channel. The utility model discloses an axle center can balance the oil pressure in the hydraulic pressure floor spring better, improves the life of hydraulic pressure floor spring.

Description

Axle center and use its hydraulic floor spring

Technical Field

The utility model relates to a floor spring technical field especially relates to an axle center and use its hydraulic pressure floor spring.

Background

The hydraulic floor spring is installed under the ground surface, and the structure of the hydraulic floor spring is covered by the cover plate after being connected with the door, so that people cannot observe accessories related to the hydraulic floor spring, which obstruct the view or look through the door, so that the door is more attractive in use; hydraulic springs are increasingly being used because they are suitable for use in almost all wood, steel, aluminum and frameless glass doors.

however, the hydraulic floor spring is often too high in temperature on the ground surface in summer, so that the hydraulic oil sealed inside the floor spring generates large expansion pressure due to temperature rise, the expansion pressure acts on the sealing element to easily cause the hydraulic floor spring to leak oil, and even the floor spring body cracks in severe cases. The oil leakage phenomenon not only easily causes the performance reduction of the hydraulic floor spring, but also pollutes the surrounding environment and simultaneously influences the use aesthetic property. In order to reduce the influence caused by the oil leakage phenomenon, a structure with an oil pressure relieving function is usually designed in the existing hydraulic ground spring, most of the structure with the oil pressure relieving function is that a balance pressure component is arranged in a closed cavity inside the hydraulic ground spring, the balance pressure component realizes the unloading of high pressure inside the hydraulic ground spring in a mode of compressing air sealed in the closed cavity inside the hydraulic ground spring, but the disadvantage of the balance pressure mode is that the raised oil pressure inside the closed cavity is balanced by utilizing the compressibility of the air according to the common knowledge, the effect of balancing the oil pressure is limited by the ratio of the volume of the air sealed at the initial position of a piston in the closed cavity to the volume of the air sealed at the final position of the piston, and the compressibility of the air in the closed cavity is gradually poor along with the gradual rise of the oil pressure, therefore, the pressure unloading capacity in the cavity is limited, and the pressure unloading effect is not ideal.

Aiming at the defects of the prior art, the technical personnel in the field hope to seek a hydraulic floor spring to better balance the oil pressure in the cavity of the hydraulic floor spring, thereby effectively avoiding the risks of oil leakage of the hydraulic floor spring and cracking of the hydraulic floor spring body and further prolonging the service life of the hydraulic floor spring.

SUMMERY OF THE UTILITY MODEL

in order to better balance the oil pressure in the cavity of the hydraulic floor spring and prolong the service life of the hydraulic floor spring. The utility model provides an axle center and use its hydraulic pressure floor spring.

According to the utility model discloses a first aspect provides an axle center, and this axle center includes: the axle center body comprises a cylinder body with an opening at the bottom end; the shaft neck is connected with the bottom end opening of the cylinder body in a sealing manner so as to form a balance cavity between the shaft neck and the cylinder body; and the compression assembly is arranged in the balance cavity and hermetically separates the balance cavity into a first cavity and a second cavity. Wherein, the top end of the axle center body is provided with a first channel, one end of which is communicated with the first cavity and the other end of which is communicated with the outside; the shaft neck is internally provided with a second channel, one end of the second channel is communicated with the second cavity, and the other end of the second channel is communicated with the outside, so that when pressure difference exists between the first channel and the second channel, the compression assembly can change the volumes of the first cavity and the second cavity through reciprocating motion in the balance cavity so as to balance the pressure in the first channel and the second channel.

Further, the compression assembly comprises a first piston for hermetically dividing the balance cavity into a first cavity and a second cavity, and a first elastic piece connected with the first piston, wherein the first elastic piece is connected with the inner wall of one of the first cavity and the second cavity.

Furthermore, the shaft neck comprises a first connecting end used for being connected with the bottom opening of the cylinder in a sealing mode and a second connecting end connected with the first connecting end and used for fixing the bearing piece, and a limiting boss is formed on the outer peripheral wall of the first connecting end.

Further, the axle center still includes the axle sleeve of being connected and the coaxial cooperation of surface with spacing boss with the bottom opening of barrel.

Further, a first filter element is arranged in the first channel.

further, a second filter component is arranged in the second channel.

Furthermore, a cam is formed on the outer peripheral wall of the cylinder, and the axis of the cylinder is perpendicular to the plane of the cam.

According to the utility model discloses a second aspect provides a hydraulic floor spring. This hydraulic ground spring includes: a housing; the axle center is in sealed rotary connection with the inside of the shell, the first channel is communicated with the outside of the shell, and the second channel is communicated with the inside of the shell; and the hydraulic assembly is connected with the shaft center, is arranged to reciprocate in the shell and hermetically divides the interior of the shell into a first chamber and a second chamber for containing hydraulic oil.

Wherein the second passage communicates with the second chamber such that the compression assembly is stationary within the balance chamber when the pressure inside the housing is equal to the pressure outside the housing; and when ambient temperature rose, the inside second chamber pressure of casing can rise because oil inflation, compression assembly upwards moves in balanced cavity, let out the space and supply the pressure oil uninstallation that risees, because ambient temperature rose relatively gently, compression assembly rose to a certain position, when inside second chamber pressure of casing and casing external pressure approximate equilibrium, compression assembly was in quiescent condition at relative long time, only when ambient temperature descends once more, when the inside second chamber pressure of casing reduced, compression assembly slowly downstream again, get back to initial position.

Further, the hydraulic assembly comprises a second piston (a one-way ball valve is arranged in the second piston, the one-way ball valve is opened when the door is opened, and the one-way ball valve is closed when the door is closed), a connecting rod for connecting the second piston and the axis, and a second elastic element positioned between the axis and the second piston, wherein the second piston is used for dividing the interior of the shell into a first chamber and a second chamber.

Furthermore, a limiting part is formed in the second cavity, the second elastic piece abuts between the limiting part and the second piston, and the connecting rod penetrates through the limiting part to be connected with the cam of the axis.

Through the above scheme, compare with prior art, the utility model discloses an axle center has the advantage of following two aspects: on the one hand, because the first passageway is linked together with the outside, make the gas in the first cavity can be discharged to outside atmospheric environment through the first passageway when the pressurized effect, and can inhale the gas in the outside atmosphere in order to compress the second cavity when the pressurized effect is used to realized the regulation of the gas in the first cavity to the pressure in the second cavity, realized the regulation of the gas in the first cavity to the inside pressure of enclosed construction promptly. Therefore, the axle center of the utility model can better balance the pressure, thereby ensuring the stability of the whole structure of the closed structure applying the axle center, and particularly when the axle center is applied to a hydraulic floor spring, the axle center can better avoid the oil leakage of the hydraulic floor spring or the cracking of the body, thereby prolonging the service life of the hydraulic floor spring; on the other hand, compared with the existing axle center, the axle center is additionally provided with the compression assembly in the axle center, so that the available space in the axle center is fully utilized, the weight of the axle center is reduced while the rotation and pressure adjusting functions of the axle center are ensured, and particularly when the axle center is applied to a hydraulic floor spring, the whole weight of the hydraulic floor spring is reduced.

drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.

Figure 1 is a schematic structural view of a first embodiment of a hub according to the present invention;

FIG. 2 is a schematic structural view of a first embodiment of the hub body shown in FIG. 1;

FIG. 3 is a schematic structural view of a first embodiment of the journal shown in FIG. 1;

Figure 4 is a schematic view of a second embodiment of a hub according to the present invention;

FIG. 5 is a schematic structural view of a second embodiment of the hub body shown in FIG. 4;

FIG. 6 is a schematic structural view of a second embodiment of the journal shown in FIG. 4;

FIG. 7 is a schematic structural view of a hydraulic floor spring according to the present invention;

3 fig. 3 8 3 is 3 a 3 cross 3- 3 sectional 3 view 3 of 3 the 3 hydraulic 3 spring 3 shown 3 in 3 fig. 3 7 3 taken 3 along 3 the 3 direction 3 a 3- 3 a 3. 3

Detailed Description

embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.

Fig. 1 shows the structure of a shaft core 1 according to the invention. As shown in fig. 1, the shaft 1 includes: the axle center body 11, the axle center body 11 includes the bottom open-ended cylinder 13; a shaft neck 12, wherein the shaft neck 12 is connected with the bottom end opening of the cylinder 13 in a sealing way, so as to form a balance cavity 131 between the shaft neck 12 and the cylinder 13; and the compression assembly 14 is arranged in the balance cavity 131, and the balance cavity 131 is hermetically separated into a first cavity 132 and a second cavity 133. Wherein, the top end 111 of the shaft center body 11 is formed with a first channel 112, one end of which is communicated with the first cavity 132, and the other end of which is communicated with the outside; the journal 12 is formed with a second channel 121 having one end communicating with the second cavity 133 and the other end communicating with the outside, so that when there is a pressure difference between the first channel 112 and the second channel 121, the compression assembly 14 can change the volumes of the first cavity 132 and the second cavity 133 by reciprocating in the balance chamber 131, so that the pressures in the first channel 112 and the second channel 121 are approximately equal, thereby balancing the pressures in the first channel 112 and the second channel 121. It can be understood that the pressures in the first and second passages 112 and 121 are approximately equal to each other, that the frictional resistance generated by the reciprocating motion of the compression assembly 14 in the balance chamber 131 is overcome when the pressures in the first and second passages 112 and 121 are balanced by the compression assembly 14.

The utility model discloses an axle center 1 mainly used links to each other with an airtight structure in order to adjust the inside pressure of airtight structure (like hydraulic floor spring) to can effectively ensure the structural stability of airtight structure self. Specifically, the second channel 121 is communicated with the inner cavity of the closed structure, and the first channel 112 is communicated with the external atmosphere. Since the first passage 112 is communicated with the outside and the first cavity 132, the gas pressure in the first cavity 132 is approximately equal to the external atmospheric pressure, when there is a pressure difference between the first passage 112 and the second passage 121, that is, there is a difference between the external atmospheric pressure and the pressure inside the sealed structure, the pressure in the first passage 112 or the second passage 121 with the higher pressure acts on the compression element 14, so that the compression element 14 moves toward the side with the lower pressure in the cylinder 13, the compression element 14 moves in the cylinder 13 under the action of the pressure, so that the volumes of the first cavity 132 and the second cavity 133 change, and the compression element 14 stops moving until the pressure in the second passage 121 is equal to the pressure in the first passage 112.

For example, when the pressure in the first channel 112 is smaller than the pressure in the second channel 121, that is, the pressure of the external atmosphere is smaller than the pressure inside the sealed structure, the pressure in the second channel 121 acts on the compressing assembly 14 to move toward the first channel 112, and as the compressing assembly 14 moves, the volume of the second cavity 133 gradually increases and the pressure gradually decreases, until the volumes in the first cavity 132 and the second cavity 133 reach an equilibrium state to make the pressure in the first channel 112 equal to the pressure in the second channel 121, the compressing assembly 14 stops moving. Therefore, the utility model discloses an axle center 1 can reach the purpose of balanced first passageway 112 and second passageway 121 internal pressure through make compression assembly 14 motion under the effect of pressure differential to avoided effectively because of the too big emergence of the structure scheduling problem that breaks that leads to of the inside pressure of enclosed construction, and then effectively ensured the structural stability of enclosed construction self.

Compared with the prior art, the utility model discloses an axle center 1 has the advantage in following two aspects: on one hand, since the first passage 112 is communicated with the outside, the gas in the first cavity 132 can be discharged to the external atmosphere environment through the first passage 112 when being pressurized, and the gas in the external atmosphere can be sucked to compress the second cavity when being pressurized, so that the adjustment of the pressure in the second cavity 133 by the gas in the first cavity 132, that is, the adjustment of the pressure in the sealed structure by the gas in the first cavity 132 is realized. Therefore, the axle center 1 of the utility model can better balance the external atmosphere and the pressure inside the closed structure, thereby ensuring the stability of the whole structure of the closed structure applying the axle center 1, and particularly when the axle center 1 is applied to a hydraulic floor spring, the axle center 1 can better avoid the oil leakage of the hydraulic floor spring or the cracking of the body, thereby prolonging the service life of the hydraulic floor spring; on the other hand, compared with the conventional shaft core 1, the compression assembly 14 additionally arranged in the shaft core 1 not only fully utilizes the available space in the shaft core 1, but also reduces the weight of the shaft core 1 while ensuring the rotation and pressure regulation functions of the shaft core 1, and particularly reduces the whole weight of the hydraulic ground spring when the shaft core 1 is applied to the hydraulic ground spring.

As shown in fig. 1, preferably, the compressing assembly 14 may include a first piston 141 for dividing the balancing chamber 131 into the closed first and second chambers 132 and 133, and a first elastic member 142 (preferably, a spring) connected to the first piston 141, the first elastic member 142 being connected to an inner wall of one of the first and second chambers 132 and 133. Through this setting, there is the pressure differential in first passageway 112 and second passageway 121, when balanced pressure through compression assembly 14, balanced pressure only needs to overcome the resistance of first elastic component 142 and the frictional resistance of first piston 141 and the inner wall of barrel 13, so the utility model discloses a pressure adjustment function that axle center 1 provided is relevant with the compressive resistance of first elastic component 142 and the frictional resistance of first piston 141 and the inner wall of barrel 13.

Preferably, a sealing ring 15 is provided inside the compression assembly 14, and the sealing ring 15 is provided between the first piston 141 and the balance chamber 131. When balancing pressure through the compression assembly 14, the frictional resistance of the first elastic member 142, the inner walls of the first piston 141 and the cylinder 13 and the frictional force between the sealing ring 15 and the balance cavity 131 are only needed to be overcome by the balanced pressure, thereby the utility model discloses a pressure adjusting function provided by the axle center 1 is related to the frictional force between the compression resistance of the first elastic member 142, the frictional resistance of the inner walls of the first piston 141 and the cylinder 13 and the frictional force between the sealing ring 15 and the balance cavity 131.

As shown in fig. 3, the journal 12 may preferably include a first connection end 122 for sealing connection with the bottom end opening of the cylinder 13 and a second connection end 123 connected to the first connection end 122 for fixing the bearing member, and a limit projection 124 may be formed on an outer circumferential wall of the first connection end 122.

Through the setting, when the utility model discloses an axle center 1 is applied to hydraulic floor spring, on the one hand, hydraulic floor spring passes through axle center 1 AND gate connection, the moment of opening the door that axle center 1 bore is transmitted to journal 12 through axle center body 11, the interference magnitude of the interference fit of the axial length of the first link 122 that accessible design is fit for and the inner wall of first link 122 and barrel 13, make the frictional resistance between the inner wall of first link 122 and barrel 13 can hinder journal 12 to the rotation of axle center body 11, thereby make axle center 1 have fine structural strength when rotating, guarantee that axle center 1 can reliable operation in its life within range; on the other hand, the limit boss 124 has a limit function on the journal 12, i.e. prevents the journal 12 from moving further toward the direction of the shaft center body 11, so as to stabilize the volume of the balance cavity 131.

In the preferred embodiment shown in fig. 1, the shaft center 1 further includes a sleeve 18 located on the outer peripheral wall of the limit boss 124, the sleeve 18 is in clearance fit with the boss 124 of the shaft neck 12, the height of the sleeve 18 is smaller than the height of the boss 124, and one end of the sleeve 18 abuts against the bottom end of the cylinder 13. When the utility model discloses a when axle center 1 is applied to hydraulic floor spring, the axial pressure that the gravity of the door of being connected with axle center 1 produced transmits axle journal 12 through axle center body 11 on, the rethread transmits other parts of hydraulic floor spring with the boss 124 lower extreme of axle journal 12. Through setting up axle sleeve 18, reduce the friction torque that transmits on axle journal 12, and then reduce the risk that axle journal 12 and barrel 13 take place relative rotation, improve the structural strength of axle center 1, prolong the life of axle center 1.

It should be noted that, in the embodiment shown in fig. 4, the shaft center 1 ' may not include the shaft sleeve 18, and as shown in fig. 5 and fig. 6, the arrangement increases the contact area between the inner wall of the cylinder 13 ' and the first connection end 122 ' of the shaft neck 12 ', so as to enhance the connection strength between the shaft center body 11 ' and the shaft neck 12 ', and the engagement between the limit boss 124 ' and the cylinder 13 ' simultaneously limits the shaft neck 12 '. Therefore, the above arrangement ensures the strength of the journal 12 'itself while ensuring the function of the shaft center 1'.

As shown in fig. 1, preferably, a first filter member 16 for filtering dust in the air may be disposed in the first passage 112; a second filter member 17 for filtering foreign substances in the hydraulic oil may be disposed in the second passage 121. This arrangement prevents the compressible volume of the balance chamber 131 from decreasing due to the introduction of dust or impurities into the balance chamber 131, thereby resulting in a decrease in the pressure that can be balanced, and further affecting the pressure balance effect of the shaft center 1.

As shown in fig. 2, it is also preferable that the outer circumferential wall of the cylinder 13 is further formed with a cam 113, and the axis of the cylinder 13 may be perpendicular to the plane of the cam 113. The cam 113 is adapted to be coupled to a structure within the enclosed structure to move the structure within the enclosed structure. For example, as shown in fig. 7, the cam 113 is used to connect to the hydraulic component 21 inside the hydraulic spring 100, so that when the shaft core 1 rotates, the cam 113 is driven to rotate, and then the hydraulic component 21 connected to the cam 113 is driven to move, so as to realize reliable operation of the hydraulic component 21.

fig. 7 shows a schematic structural view of a hydraulic ground spring 100 according to the present invention. As shown in fig. 7, the present invention provides a hydraulic floor spring 100, including: a housing 2; the shaft center 1, the shaft center 1 and the inside of the shell 2 are hermetically and rotatably connected, the first channel 112 is communicated with the outside of the shell 2, and the second channel 121 is communicated with the inside of the shell 2; a hydraulic assembly 21 connected to the shaft core 1, the hydraulic assembly 21 being arranged to be capable of reciprocating within the housing 2 and sealingly dividing the interior of the housing 2 into a first chamber 22 and a second chamber 23 for containing hydraulic oil. Wherein the second channel 121 is communicated with the second chamber 23, so that when the pressure of the second chamber 23 inside the housing 2 is equal to the pressure outside the housing 2, the hydraulic assembly 21 reciprocates in the housing 2 under the rotation of the shaft center 1, and the compression assembly 14 is stationary in the balance chamber 131. And when the ambient temperature rises, the pressure of the second chamber 23 inside the housing 2 rises due to the expansion of the oil, and when the pressure thereof is greater than the resistance of the first elastic member 142, the frictional resistance of the first piston 141 with the inner wall of the cylinder 13, the frictional force between the seal ring 15 and the balance chamber 131, and the pressure of the external atmosphere, the compression assembly 14 moves upward inside the balance chamber 131. Because the ambient temperature rises relatively smoothly, the compression assembly 14 moves slowly upward at a very low speed until the ambient temperature no longer changes, at which time the compression assembly 14 is at rest; when the ambient temperature decreases, the volume of the oil in the second chamber 23 inside the housing 2 contracts, the pressure decreases, and the compressing assembly 14 slowly moves downward against the friction force under the action of the elastic force of the first elastic member 142 and the atmospheric pressure until the ambient temperature does not change any more, and the compressing assembly 14 is in the static state again. The movement speed of compressing unit 14 is slow relative to the reciprocating speed of hydraulic unit 21, and does not affect the movement of hydraulic unit 21, and can be regarded as two independent movements.

as shown in fig. 1, the inside of the housing 2 is hermetically divided into a first chamber 22 and a second chamber 23 for containing hydraulic oil, and the main reason for the change of the internal pressure of the hydraulic ground spring 100 is the change of the internal temperature, when the temperature inside the hydraulic ground spring 100 increases, the expansion coefficient of the hydraulic oil contained in the second chamber 23 is larger than that of the housing 2, the hydraulic oil in the second chamber 23 can pass through the gap of the bearing member 25 installed at the lower part of the shaft center 1 to reach the second passage 121 connected to the second chamber 23 by its own expansion under the condition of being completely sealed, and then pass through the second passage 121 and the second filter member 17 to enter the second chamber 133, the expanded hydraulic oil pushes the first piston 141 of the compression assembly 14 to move upward and compress the air in the first chamber 132, and the air in the first chamber 132 can enter the atmosphere through the first passage 112 and the first filter member 16, this allows the pressure in the first passage 112 to be equalized with the pressure in the second passage 121, that is, the expansion pressure of the hydraulic oil in the second chamber 133 to be released, thereby achieving the purpose of equalizing the pressure in the hydraulic ground spring 100.

Through the setting, hydraulic pressure floor spring 100 is at the during operation, and axle center 1 not only can realize the function of current ordinary hydraulic pressure floor spring through the cooperation with hydraulic assembly 21, can also make the utility model discloses a hydraulic pressure floor spring 100 has the function of balanced internal pressure. The utility model discloses a hydraulic pressure floor spring 100 only needs to overcome the elasticity of the first elastic component 142 in the axle center 1 and the frictional force of first piston 141 and barrel 13 inner wall when balanced pressure can realize restricting the maximum value of casing internal pressure, and the axle center of the hydraulic pressure floor spring among the prior art does not possess the utility model discloses a pressure adjustment function in the axle center 1 of hydraulic pressure floor spring 100 to can not realize the purpose that the hydraulic pressure floor spring 100 of this application can effectively prolong its self life.

As shown in fig. 7, the hydraulic assembly 21 may preferably include a second piston 211 for dividing the inside of the housing 2 into the first chamber 22 and the second chamber 23 (as shown in fig. 8, the second piston 211 has a one-way ball valve 214 built therein, the one-way ball valve 214 is opened when the door is opened, and the one-way ball valve 214 is closed when the door is closed), a connecting rod 212 for connecting the second piston 211 and the shaft center 1, and a second elastic member 213 located between the shaft center 1 and the second piston 211. The second chamber 23 may preferably have a stopper 24 formed therein, the second elastic member 213 abuts between the stopper 24 and the second piston 211, and the connecting rod 212 passes through the stopper 24 and is connected to the cam 113 of the shaft center 1.

Through the connection between the cam 113 and the connecting rod 212, in the door opening process, the position of the connecting rod 212 acting on the cam 113 changes, the connecting rod 212 drives the second piston 211 to move towards the axis 1 along the inner wall of the housing 2, and compresses the second elastic member 213 abutted between the limiting part 24 and the second piston 211, so that the volume of the first chamber 22 is increased, the volume of the second chamber 23 is decreased, the oil in the second chamber 23 freely flows into the first chamber 22 through the one-way ball valve 214 arranged in the second piston 211, namely when the door is in an open state, the first chamber 22 is communicated with the second chamber 23; during the door closing process, the one-way ball valve 214 in the second piston 211 is closed, the second piston 211 can move away from the shaft center 1 under the elastic force of the compressed second elastic member 213, and the enclosed oil in the first chamber 22 flows back to the second chamber 23 through the throttle 215 (shown in fig. 8) of the ground spring 100.

To sum up, the utility model discloses a hydraulic pressure floor spring 100 is under the prerequisite of having guaranteed current hydraulic pressure floor spring function, make the pressure balance of the inside pressure balance of hydraulic pressure floor spring 100 only need overcome the elasticity of the first elastic component 142 in axle center 1 and the frictional force of first piston 141 and barrel 12 inner wall through the compression subassembly 14 of addding 1 inside in the axle center, no longer have the restriction of other factors, the oil pressure in the cavity of balanced hydraulic pressure floor spring 100 that just can be better to effectual hydraulic pressure floor spring 100 leaks the risk that oil and hydraulic pressure floor spring 100 body split, and then improved hydraulic pressure floor spring 100's life.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the scope of the embodiments of the present invention, and are intended to be covered by the claims and the specification. In particular, the technical features mentioned in the embodiments can be combined in any way as long as there is no structural conflict. The present invention is not limited to the particular embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.

Claims (10)

1. A hub, comprising,

The axle center body comprises a cylinder body with an opening at the bottom end,

a journal sealingly connected with the bottom end opening of the barrel to form a balance cavity between the journal and the barrel,

The compression assembly is arranged in the balance cavity and hermetically divides the balance cavity into a first cavity and a second cavity,

The top end of the axle center body is provided with a first channel, one end of the first channel is communicated with the first cavity, and the other end of the first channel is communicated with the outside; the shaft journal is internally provided with a second channel, one end of the second channel is communicated with the second cavity, and the other end of the second channel is communicated with the outside, so that when a pressure difference exists between the first channel and the second channel, the compression assembly can change the volumes of the first cavity and the second cavity through reciprocating motion in the balance cavity so as to balance the pressure in the first channel and the second channel.

2. The hub of claim 1, wherein said compression assembly comprises a first piston for sealingly dividing said balance chamber into said first and second chambers and a first resilient member coupled to said first piston, said first resilient member coupled to an inner wall of one of said first and second chambers.

3. The hub according to claim 1 or 2, wherein the journal comprises a first connecting end for sealing connection with the bottom opening of the cylinder and a second connecting end connected with the first connecting end and used for fixing the bearing member, and a limiting boss is formed on the outer peripheral wall of the first connecting end.

4. the hub according to claim 3, further comprising a sleeve on the outer peripheral wall of the limiting boss, wherein one end of the sleeve abuts against the bottom end of the cylinder.

5. a hub according to claim 1 or claim 2, wherein a first filter element is provided within the first channel.

6. A hub according to claim 1 or claim 2, wherein a second filter element is provided in the second channel.

7. The hub according to claim 1 or 2, wherein the outer peripheral wall of the cylinder is further formed with a cam, and the axis of the cylinder is perpendicular to the plane of the cam.

8. A hydraulic floor spring, comprising:

a shell body, a plurality of first connecting rods and a plurality of second connecting rods,

The hub of any of claims 1-7, sealingly rotationally coupled with an interior of the housing, the first passage in communication with an exterior of the housing, the second passage in communication with an interior of the housing,

A hydraulic assembly connected to the shaft center, the hydraulic assembly being configured to reciprocate within the housing and sealingly divide the interior of the housing into a first chamber and a second chamber for containing hydraulic oil,

Wherein the second passage communicates with the second chamber such that when the pressure inside the housing is equal to the pressure outside the housing, the hydraulic assembly reciprocates within the housing under rotation of the shaft while the compression assembly is stationary within the balance chamber; and when the pressure inside the shell is not equal to the pressure outside the shell, the compression assembly reciprocates in the balance cavity.

9. A hydraulic ground spring according to claim 8, wherein said hydraulic assembly includes a second piston for dividing said housing interior into said first and second chambers, a connecting rod for connecting said second piston to said hub, and a second resilient member located between said hub and said second piston.

10. the hydraulic ground spring as claimed in claim 9, wherein a stop member is formed in the second chamber, the second resilient member abuts between the stop member and the second piston, and the connecting rod passes through the stop member and is connected to the cam of the axle center.