CN220336576U

CN220336576U - Lifting tail end hydraulic buffer device for vehicle carrying plate and stereo garage with lifting tail end hydraulic buffer device

Info

Publication number: CN220336576U
Application number: CN202322204562.5U
Authority: CN
Inventors: 边心文; 罗忠群; 石晓燕; 赵茹; 刘娟; 张栋
Original assignee: China Railway Construction Heavy Industry Group Co Ltd
Current assignee: China Railway Construction Heavy Industry Group Co Ltd
Priority date: 2023-08-16
Filing date: 2023-08-16
Publication date: 2024-01-12
Anticipated expiration: 2033-08-16

Abstract

The utility model discloses a lifting tail end hydraulic buffer device for a vehicle carrying plate and a stereo garage with the same, comprising the following components: the self-resetting piston comprises a top plate, a bottom plate, a self-resetting piston cylinder, a back pressure regulating loop and a buffering limiting cylinder, wherein the self-resetting piston cylinder is vertically arranged, the upper end of the self-resetting piston cylinder is connected with the top plate, the back pressure regulating loop is arranged outside the self-resetting piston cylinder, and the buffering limiting cylinder is vertically fixed on the bottom plate. An upper cavity and a lower cavity which are sequentially arranged up and down are arranged in the self-resetting piston cylinder, and oil ports at two ends of the back pressure regulating loop are respectively communicated with the upper cavity and the lower cavity. The buffer limiting cylinder is used for propping against the lower end of the self-resetting piston cylinder when moving upwards so as to push the self-resetting piston cylinder to move upwards to compress the lower cavity, so that hydraulic oil in the lower cavity forms back pressure oil and flows to the upper cavity through the back pressure adjusting loop so as to buffer the vehicle carrying plate to slow down to stop, and the self-resetting piston cylinder is also used for automatically resetting after the vehicle carrying plate moves downwards. The utility model discloses the regulation of different backpressure buffer forces can be realized to the device, and when carrying the sweep start to descend, can effectively improve the stationarity that carries the sweep to descend the start, makes and carries the sweep to descend safer.

Description

Lifting tail end hydraulic buffer device for vehicle carrying plate and stereo garage with lifting tail end hydraulic buffer device

Technical Field

The utility model relates to the technical field of stereo garages, in particular to a lifting tail end hydraulic buffer device for a vehicle carrying plate. In addition, the utility model also relates to a stereo garage with the lifting tail end hydraulic buffer device for the vehicle carrying plate.

Background

The three-dimensional garage is a mechanical or mechanical equipment system for storing and taking vehicles by using the three-dimensional garage, wherein the lifting and transverse moving type three-dimensional garage is most popular with vast parking users, the lifting and transverse moving type three-dimensional garage mainly adopts a lifting mode of four-point hanging of a steel wire rope to realize lifting of a vehicle carrying plate, the steel wire rope is rotated by a winding drum to be retracted, and the winding drum is driven by a motor; meanwhile, in order to enhance the stability of the vehicle carrying plate after lifting and stopping and reduce the collision hazard of the vehicle carrying plate to the limiting vertical rods, a buffer device is arranged between the vehicle carrying plate and the transverse moving frame. The buffer device can enable the vehicle carrying plate to flexibly contact with the transverse moving frame, so that the vehicle carrying plate is prevented from shaking due to hard impact when the vehicle carrying plate is lifted and stopped, and meanwhile, the service time of the limiting vertical rod is longer.

The utility model of patent 1 publication No. CN108678464, which is a lifting and transverse moving type stereo garage with stable operation, is the same as the buffer device of patent 2 publication No. CN208763503U, which is a lifting and transverse moving type stereo garage with a vehicle carrying plate lifting and stopping buffer device, and consists of a spring sleeve assembly and 2 groups of positioning sleeve assemblies, wherein the combination of a shrinkage rod of the spring sleeve assembly and the spring sleeve with a reset spring arranged therein plays a role in buffering the lifting and stopping of the vehicle carrying plate, so that the occurrence of impact vibration is avoided, the safety stop of vehicles is not facilitated, and the service life of a limiting rod is prolonged; the limiting rod is combined with the first limiting sleeve to limit the lifting and stopping of the vehicle carrying plate and limit the shaking amplitude of the vehicle carrying plate.

The patent 3 publication No. CN211524249U discloses a buffer device of a lifting and transverse moving type stereo garage, which consists of an adjustable spring sleeve component, a front soft anti-abrasion component and a limiting rod component, wherein the spring sleeve component is used for buffering, the anti-abrasion component is used for preventing abrasion, and the limiting rod component is used for limiting. When the car carrying plate rises, the upper surface of the soft cushion inside the groove plate of the anti-abrasion assembly is contacted with the lower surface of the soft block, the soft cushion is contacted with the soft block to play a role in buffering the car carrying plate, abrasion is not easy to occur, and long-term stable use of the buffering mechanism is facilitated.

Description of the prior art shortcomings:

both patent 1 and patent 2 have the problem that the buffer spring force cannot be adjusted; patent 3 has the problem that the rigidity of the buffering force cannot be adjusted; the problems that after the lifting of the vehicle carrying plate is stopped, the springs are always in a compressed state exist in the patent 1, the service life of the springs is influenced, meanwhile, the vehicle carrying plate is acted by the buffer spring force when being lowered, and the stability of the lowering starting is poor; the wear assembly of patent 3 is also always in a compressed state, which also affects the useful life of the wear assembly.

Disclosure of Invention

The utility model provides a lifting tail end hydraulic buffer device for a vehicle carrying plate and a stereo garage with the same, and aims to solve the technical problems that the buffer force or the buffer force rigidity of the existing buffer device cannot be adjusted, and the stability of the descending starting of the vehicle carrying plate is poor.

The technical scheme adopted by the utility model is as follows:

an ascending end hydraulic buffer device for a vehicle carrying plate, comprising: the device comprises a top plate fixed with a garage transverse moving frame, a bottom plate fixed with a vehicle carrying plate, a self-resetting piston cylinder vertically arranged and the upper end of which is connected with the top plate, a back pressure regulating loop arranged outside the self-resetting piston cylinder, and a buffering limiting cylinder vertically fixed on the bottom plate below the self-resetting piston cylinder; an upper cavity and a lower cavity which are sequentially arranged up and down and filled with hydraulic oil are arranged in the self-resetting piston cylinder, and oil ports at two ends of the back pressure regulating loop are respectively communicated with the upper cavity and the lower cavity so as to regulate the back pressure buffering force of the lower cavity; the buffer limiting cylinder is used for elastically propping against the lower end of the self-resetting piston cylinder when the vehicle carrying plate moves upwards to the ascending tail end so as to push the self-resetting piston cylinder to move upwards to compress the lower cavity, so that hydraulic oil in the lower cavity forms back pressure oil and flows to the upper cavity through the back pressure adjusting circuit, the vehicle carrying plate is buffered to be decelerated to a stop, and the self-resetting piston cylinder is also used for automatically moving downwards to return to an initial state after the vehicle carrying plate moves downwards.

Further, the self-resetting piston cylinder comprises a piston rod which is vertically arranged and the top end of which is fixedly connected with the top plate, and a piston cylinder which is sleeved on the outer circle of the piston rod in an up-and-down movable way; the inner cavity of the piston cylinder is divided into an upper cavity and a lower cavity by a piston rod.

Further, the wall surface of the piston cylinder corresponding to the upper cavity is provided with an oil filling port for adding lubricating oil; the wall surface of the piston cylinder corresponding to the lower cavity is provided with an exhaust port for oiling and exhausting.

Further, the piston rod comprises a piston rod body which is vertically arranged and the top end of which is fixedly connected with the top plate, and a sealing plate and a fixed plug plate which are vertically arranged in sequence and are vertically fixed on the outer circle of the piston rod body; the piston cylinder is sleeved on the outer circle of the piston rod body in an up-and-down sliding way; the fixed plug plate divides the inner cavity of the piston cylinder into an upper cavity and a lower cavity; the upper end of the piston cylinder is opened, and the sealing cover plate is used for sealing the upper opening end of the piston cylinder.

Further, the self-resetting piston cylinder further comprises a resetting spring for supplying compression elastic force and a movable plug plate for installing the resetting spring; the movable plug plate is sleeved on the outer circle of the piston rod body and is positioned between the sealing cover plate and the fixed plug plate, and a limiting step for limiting the downward movement of the movable plug plate is arranged on the inner peripheral wall of the piston cylinder; the reset spring is arranged on the outer circle of the piston rod body, and the two ends of the reset spring are respectively connected with the sealing cover plate and the movable plug plate.

Further, the back pressure regulating loop comprises a pressure regulating loop, a one-way loop, a throttle valve arranged in the pressure regulating loop and a one-way valve arranged in the one-way loop; two ends of the pressure regulating loop are respectively communicated with the upper cavity and the lower cavity; the two ends of the one-way loop are respectively communicated with the pressure regulating loops at the upstream and downstream of the throttle valve, and the one-way valve is used for preventing hydraulic oil in the lower cavity from directly flowing to the upper cavity.

Further, the buffer limiting cylinder comprises a steel column vertically fixed on the bottom plate and a rubber sleeve arranged on the outer circle of the steel column in an interference manner; the lower end of the rubber sleeve is supported on the bottom plate, and the upper end of the rubber sleeve is higher than the steel column.

Further, the lifting tail end hydraulic buffer device for the vehicle carrying plate further comprises a plurality of groups of guiding limiting assemblies, wherein the plurality of groups of guiding limiting assemblies are annularly arranged on the periphery of the self-resetting piston cylinder and are connected between the top plate and the bottom plate so as to be used for guiding the lifting of the vehicle carrying plate and limiting the shaking amplitude when the lifting of the vehicle carrying plate is stopped.

Further, the guiding limiting assembly comprises a guiding rod, a rod sleeve and a wear-resistant sleeve, wherein the guiding rod is vertically arranged, the upper end of the guiding rod is fixedly connected with the top plate, the rod sleeve is vertically fixed on the bottom plate, and the wear-resistant sleeve is detachably arranged at the top end of the rod sleeve; the wear-resistant sleeve, the rod sleeve and the bottom plate are provided with a guide channel for the guide rod to pass through.

According to another aspect of the present utility model, there is also provided a stereo garage, including: the hydraulic buffer device comprises a mounting bracket arranged on the ground, a transverse moving frame transversely arranged at the top end of the mounting bracket in a sliding manner, a vehicle carrying plate connected below the transverse moving frame in a hanging manner, and a lifting tail end hydraulic buffer device arranged between the transverse moving frame and the vehicle carrying plate and used for any vehicle carrying plate.

The utility model has the following beneficial effects:

during operation, the back pressure buffer force in the lower cavity can be adjusted by adjusting the back pressure adjusting loop, so that different back pressure buffer force adjustment is realized, the running stability of the vehicle carrying plate is more controllable, and the application range is wider; meanwhile, after the vehicle carrying plate is lifted and stopped, because the hydraulic oil pressure in the upper cavity and the hydraulic oil pressure in the lower cavity are different, the back pressure oil in the lower cavity still continues to flow upwards and is released to the upper cavity through the back pressure regulating loop until the hydraulic oil pressure in the upper cavity and the hydraulic oil in the lower cavity are equal, at the moment, the buffer force of the lower cavity can be gradually reduced to disappear, and at the moment, when the vehicle carrying plate is started to descend, the stability of the descending start of the vehicle carrying plate can be effectively improved, so that the vehicle carrying plate is lowered more safely.

In addition to the objects, features and advantages described above, the present utility model has other objects, features and advantages. The present utility model will be described in further detail with reference to the drawings.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. In the drawings:

FIG. 1 is a schematic view showing the spatial structure of a rising end hydraulic buffer device for a vehicle-carrying plate according to a preferred embodiment of the present utility model;

FIG. 2 is a front cross-sectional view of a first embodiment of the lift end hydraulic buffer for the vehicle carrier plate of FIG. 1;

fig. 3 is a cross-sectional front view of a second embodiment of the rising end hydraulic buffer device for the vehicle carrier plate of fig. 1.

Description of the drawings

10. A top plate; 20. a bottom plate; 30. a self-resetting piston cylinder; 301. an upper chamber; 302. a lower cavity; 303. a limit step; 31. a piston rod; 311. a piston rod body; 312. a cover plate; 313. fixing the plug plate; 32. a piston cylinder; 33. a return spring; 34. a movable plug plate; 40. a back pressure regulating circuit; 41. a pressure regulating circuit; 42. a unidirectional circuit; 43. a throttle valve; 44. a one-way valve; 50. a buffer limit cylinder; 51. a steel column; 52. a rubber sleeve; 60. a guide limit assembly; 601. a guide channel; 61. a guide rod; 62. a rod sleeve; 63. wear-resistant sleeve.

Detailed Description

Embodiments of the utility model are described in detail below with reference to the attached drawing figures, but the utility model can be practiced in a number of different ways, as defined and covered below.

Referring to fig. 1-3, a preferred embodiment of the present utility model provides a rising end hydraulic buffer device for a vehicle carrying plate, comprising: the automatic resetting device comprises a top plate 10 fixed with a garage transverse moving frame, a bottom plate 20 fixed with a vehicle carrying plate, a self-resetting piston cylinder 30 vertically arranged and the upper end of which is connected with the top plate 10, a back pressure regulating loop 40 arranged outside the self-resetting piston cylinder 30, and a buffering limiting cylinder 50 vertically fixed on the bottom plate 20 below the self-resetting piston cylinder 30. An upper cavity 301 and a lower cavity 302 which are sequentially arranged up and down and filled with hydraulic oil are arranged in the self-resetting piston cylinder 30, and oil ports at two ends of the back pressure regulating circuit 40 are respectively communicated with the upper cavity 301 and the lower cavity 302 so as to regulate the back pressure buffering force of the lower cavity 302. The buffer limiting cylinder 50 is used for elastically propping against the lower end of the self-resetting piston cylinder 30 when the vehicle carrying plate moves upwards to the ascending end so as to push the self-resetting piston cylinder 30 to move upwards to compress the lower cavity 302, so that hydraulic oil in the lower cavity 302 forms back pressure oil and flows upwards to the upper cavity 301 through the back pressure regulating circuit 40 to buffer the vehicle carrying plate to slow down to a stop, and the self-resetting piston cylinder 30 is also used for automatically moving downwards to return to an initial state after the vehicle carrying plate moves downwards.

The utility model provides a lifting tail end hydraulic buffer device for a vehicle carrying plate of a lifting transverse moving garage, wherein oil ports at two ends of a back pressure regulating loop 40 in the buffer device are respectively communicated with an upper cavity 301 and a lower cavity 302, so that when the vehicle carrying plate carries a buffer limit cylinder 50 to synchronously move upwards, the buffer limit cylinder 50 is propped against the lower end of a reset piston cylinder 30, the reset piston cylinder 30 moves upwards to compress the lower cavity 302, hydraulic oil in the lower cavity 302 forms back pressure oil under the action of the back pressure regulating loop 40, the back pressure oil flows up to the upper cavity 301 through the back pressure regulating loop 40, and the vehicle carrying plate gradually decelerates to a stop due to the back pressure buffer force formed by the back pressure oil in the lower cavity 302. During operation, the back pressure buffer force in the lower cavity 302 can be adjusted by adjusting the back pressure adjusting loop 40, so that different back pressure buffer force adjustment is realized, the running stability of the vehicle carrying plate is more controllable, and the application range is wider; meanwhile, after the lifting of the vehicle carrying plate is stopped, because the hydraulic oil pressure in the upper cavity 301 and the hydraulic oil pressure in the lower cavity 302 are different, the back pressure oil in the lower cavity 302 still continues to flow upwards and is released to the upper cavity 301 through the back pressure regulating loop 40 until the hydraulic oil pressure in the upper cavity 301 and the hydraulic oil pressure in the lower cavity 302 are equal, the buffer force of the lower cavity 302 can be gradually reduced until the buffer force disappears, and at the moment, when the vehicle carrying plate starts to descend, the stability of the descending starting of the vehicle carrying plate can be effectively improved, so that the descending of the vehicle carrying plate is safer.

Alternatively, as shown in fig. 1, the self-resetting piston cylinder 30 includes a piston rod 31 vertically disposed and having a top end fixedly connected to the top plate 10, and a piston cylinder 32 movably sleeved on an outer circle of the piston rod 31. The inner cavity of the piston cylinder 32 is divided into an upper cavity 301 and a lower cavity 302 by a piston rod 31.

In this alternative, the wall surface of the piston cylinder 32 corresponding to the upper cavity 301 is provided with a fuel filler for adding the lubricating oil. The wall surface of the piston cylinder 32 corresponding to the lower cavity 302 is provided with an exhaust port for filling oil and exhausting gas. When the oil port of the back pressure regulating circuit 40 communicating with the lower chamber 302 is not provided at the bottom of the lower chamber 302, the bottom of the lower chamber 302 is provided with an oil drain.

In this alternative, as shown in fig. 2 and 3, the piston rod 31 includes a piston rod body 311 vertically disposed and having a top end fixedly connected to the top plate 10, and a cover plate 312 and a fixed plug plate 313 vertically disposed in sequence on an outer circle of the piston rod body 311. The piston cylinder 32 is sleeved on the outer circle of the piston rod body 311 in a vertically sliding manner. The fixed plug plate 313 divides the inner cavity of the piston cylinder 32 into an upper cavity 301 and a lower cavity 302. The upper end of the piston cylinder 32 is open and a cover plate 312 is used to seal the upper open end of the piston cylinder 32. When the piston cylinder 32 is pushed up by the buffer limiting cylinder 50, the fixed plug plate 313 and the piston rod body 311 are fixedly arranged, so that the piston cylinder 32 compresses the lower cavity 302 when moving up, and hydraulic oil in the lower cavity 302 forms back pressure oil under the action of the back pressure regulating circuit 40 at the same time, so that the buffer vehicle carrying plate is decelerated to stop.

Optionally, as shown in fig. 2 and 3, the self-resetting piston cylinder 30 further includes a return spring 33 for supplying a compressive elastic force, and a movable plug plate 34 for mounting the return spring 33. The movable plug plate 34 is sleeved on the outer circle of the piston rod body 311 and is positioned between the sealing cover plate 312 and the fixed plug plate 313, and a limiting step 303 for limiting the downward movement of the movable plug plate 34 is arranged on the inner peripheral wall of the piston cylinder 32. The return spring 33 is mounted on the outer circle of the piston rod body 311, and two ends are respectively connected with the sealing cover plate 312 and the movable plug plate 34. When the hydraulic oil in the lower cavity 302 enters the upper cavity 301, the movable plug plate 34 is pushed to rise, and the movable plug plate 34 compresses the return spring 33; after the vehicle carrying plate descends, the compressed return spring 33 presses the movable plug plate 34 to move downwards, hydraulic oil in the upper cavity 301 returns to the lower cavity 302 through the back pressure regulating circuit 40 under the pushing of the movable plug plate 34, and when the top plate of the piston cylinder 32 touches the sealing cover plate 312 fixedly arranged, the piston cylinder 32 stops descending, namely, the self-reset piston cylinder 30 descends to the initial position from reset.

Alternatively, as shown in fig. 2 and 3, the back pressure regulating circuit 40 includes a pressure regulating circuit 41 and a check circuit 42, a throttle valve 43 provided in the pressure regulating circuit 41, and a check valve 44 provided in the check circuit 42. Both ends of the pressure regulating circuit 41 are respectively communicated with the upper chamber 301 and the lower chamber 302. Both ends of the check circuit 42 are respectively connected to the pressure regulating circuit 41 upstream and downstream of the throttle valve 43, and the check valve 44 is used to prevent the hydraulic oil of the lower chamber 302 from directly flowing to the upper chamber 301. During operation, hydraulic oil in the lower cavity 302 flows up to the upper cavity 301 after passing through the pressure regulating loop 41 and the throttle valve 43 arranged in the loop, and the back pressure buffering force generated in the lower cavity 302 can be correspondingly regulated by regulating the opening of the throttle valve 43, so that the regulation operation is simple; the hydraulic oil in the upper chamber 301 flows back to the lower chamber 302 through the check circuit 42 and the check valve 44 provided in the circuit.

Alternatively, as shown in fig. 2 and 3, the buffer limiting cylinder 50 includes a steel column 51 vertically fixed on the bottom plate 20, and a rubber sleeve 52 interference-mounted on the outer circle of the steel column 51. The lower end of the rubber sleeve 52 is supported on the bottom plate 20, and the upper end of the rubber sleeve 52 is higher than the steel column 51. When the buffering and limiting cylinder 50 is propped against the self-resetting piston cylinder 30, the upper end of the rubber sleeve 52 is higher than the steel column 51, the rubber sleeve 52 firstly contacts the bottom of the self-resetting piston cylinder 30, and then contacts the steel column 51 after certain buffering displacement, the rubber sleeve 52 has certain buffering, so that collision sound can be effectively weakened, and the compression amount of the rubber sleeve 52 is effectively controlled through the arrangement of the steel column 51, so that the service life of the rubber sleeve 52 is prolonged. In this alternative, as shown in fig. 2, the steel column 51 is a hollow column, and the lower end of the piston rod body 311 extends out of the piston cylinder 32; as shown in fig. 3, the steel column 51 is a solid column, and the lower end of the piston rod body 311 does not protrude from the piston cylinder 32.

Optionally, as shown in fig. 1, the lifting end hydraulic buffer device for a vehicle carrying plate further includes a plurality of sets of guiding and limiting assemblies 60, where the plurality of sets of guiding and limiting assemblies 60 are annularly arranged on the periphery of the self-resetting piston cylinder 30 and connected between the top plate 10 and the bottom plate 20, so as to guide the lifting of the vehicle carrying plate and limit the swing amplitude of the vehicle carrying plate when lifting is stopped.

In this alternative, as shown in fig. 2 and 3, the guiding and limiting assembly 60 includes a guiding rod 61 vertically disposed and fixedly connected to the top plate 10 at its upper end, a rod sleeve 62 vertically fixed to the bottom plate 20, and a wear-resistant sleeve 63 detachably mounted on the top end of the rod sleeve 62. The wear-resistant sleeve 63, the rod sleeve 62 and the bottom plate 20 are provided with a guide channel 601 for the guide rod 61 to penetrate. In operation, the guide rod 61 is inserted into the guide channel 601, so as to guide the lifting of the vehicle carrying plate and limit the shaking amplitude when the lifting of the vehicle carrying plate is stopped.

The specific working principle of the hydraulic buffer device is as follows:

when the vehicle carrying plate is lifted to the tail end after the vehicle is parked, the rubber sleeve 52 of the buffering limit cylinder 50 firstly touches the lower end of the self-resetting piston cylinder 30, the rubber sleeve 52 is compressed to the steel column 51 and also touches the lower end of the piston cylinder 32, the rubber sleeve 52 buffers and weakens collision sound, and meanwhile, the compressed amount of the rubber sleeve 52 is a certain value due to the arrangement of the steel column 51, so that the service life of the rubber sleeve 52 is prolonged; when the self-resetting piston cylinder 30 ascends along with the vehicle carrying plate, hydraulic oil in a lower cavity 302 flows to an upper cavity 301 through a pressure regulating loop 41 and a throttle valve 43, the back pressure formed by the lower cavity 302 is used for buffering the vehicle carrying plate to stop in a decelerating way, and different back pressure buffering forces can be realized by regulating the opening of the throttle valve 43; simultaneously, hydraulic oil in the upper cavity 301 of the piston cylinder 32 pushes the movable plug plate 34 to ascend, and the return spring 33 is compressed; after the lifting of the vehicle carrying plate is stopped, the back pressure oil in the lower cavity 302 of the piston cylinder 32 is still continuously released to the upper cavity 301 through the pressure regulating loop 41, the buffer force of the lower cavity 302 is reduced, so that the stability of the vehicle carrying plate during the descending starting is improved, and meanwhile, the stop shaking or swinging of the vehicle carrying plate can be limited by the guide rod 61 and the rod sleeve 62; after the vehicle carrying plate descends, the compressed return spring 33 presses the movable plug plate 34 to move downwards, hydraulic oil in the upper cavity 301 flows back to the lower cavity 302 through the one-way loop 42 and the one-way valve 44 under the pushing of the movable plug plate 34, and when the upper end of the piston cylinder 32 touches the cover plate 312, the piston cylinder 32 stops descending.

Referring to fig. 1-3, a preferred embodiment of the present utility model provides a stereo garage comprising: the hydraulic buffer device comprises a mounting bracket arranged on the ground, a transverse moving frame transversely arranged at the top end of the mounting bracket in a sliding manner, a vehicle carrying plate connected below the transverse moving frame in a hanging manner, and a lifting tail end hydraulic buffer device arranged between the transverse moving frame and the vehicle carrying plate and used for any vehicle carrying plate.

According to the stereo garage, as the ascending tail end hydraulic buffer device for the vehicle carrying plate is arranged between the transverse moving frame and the vehicle carrying plate, when the stereo garage works, the back pressure buffer force in the lower cavity 302 can be adjusted by adjusting the back pressure adjusting loop 40, so that different back pressure buffer force adjustment is realized, the running stability of the vehicle carrying plate is more controllable, and the application range is wider; meanwhile, after the lifting of the vehicle carrying plate is stopped, because the hydraulic oil pressure in the upper cavity 301 and the hydraulic oil pressure in the lower cavity 302 are different, the back pressure oil in the lower cavity 302 still continues to flow upwards and is released to the upper cavity 301 through the back pressure regulating loop 40 until the hydraulic oil pressure in the upper cavity 301 and the hydraulic oil pressure in the lower cavity 302 are equal, the buffer force of the lower cavity 302 can be gradually reduced until the buffer force disappears, and at the moment, when the vehicle carrying plate starts to descend, the stability of the descending starting of the vehicle carrying plate can be effectively improved, so that the descending of the vehicle carrying plate is safer.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. The utility model provides a carry terminal hydraulic buffer that rises for sweep which characterized in that includes:

the garage comprises a top plate (10) fixed with a garage transverse moving frame, a bottom plate (20) fixed with a vehicle carrying plate, a self-resetting piston cylinder (30) vertically arranged and the upper end of which is connected with the top plate (10), a back pressure regulating loop (40) arranged outside the self-resetting piston cylinder (30) and a buffering limiting cylinder (50) vertically fixed on the bottom plate (20) below the self-resetting piston cylinder (30);

an upper cavity (301) and a lower cavity (302) which are sequentially arranged up and down and filled with hydraulic oil are arranged in the self-resetting piston cylinder (30), and oil ports at two ends of the back pressure regulating loop (40) are respectively communicated with the upper cavity (301) and the lower cavity (302) so as to regulate the back pressure buffering force of the lower cavity (302);

the buffer limiting cylinder (50) is used for elastically propping against the lower end of the self-reset piston cylinder (30) when the vehicle carrying plate moves upwards to the tail end, so as to push the self-reset piston cylinder (30) to move upwards to compress the lower cavity (302), further, hydraulic oil in the lower cavity (302) forms back pressure oil and flows upwards to the upper cavity (301) through the back pressure regulating loop (40), so that the vehicle carrying plate is buffered to be decelerated to a stop, and the self-reset piston cylinder (30) is also used for automatically moving downwards to return to an initial state after the vehicle carrying plate moves downwards.

2. The ascending end hydraulic buffering device for a vehicle carrier plate according to claim 1, wherein,

the self-resetting piston cylinder (30) comprises a piston rod (31) which is vertically arranged and the top end of which is fixedly connected with the top plate (10), and a piston cylinder (32) which is sleeved on the outer circle of the piston rod (31) in an up-and-down movable manner;

the inner cavity of the piston cylinder (32) is divided into an upper cavity (301) and a lower cavity (302) by a piston rod (31).

3. The ascending end hydraulic buffering device for a vehicle carrier plate according to claim 2, wherein,

the wall surface of the piston cylinder (32) corresponding to the upper cavity (301) is provided with an oil filler for adding lubricating oil;

the wall surface of the piston cylinder (32) corresponding to the lower cavity (302) is provided with an exhaust port for oiling and exhausting.

4. The ascending end hydraulic buffering device for a vehicle carrier plate according to claim 2, wherein,

the piston rod (31) comprises a piston rod body (311) which is vertically arranged and the top end of which is fixedly connected with the top plate (10), and a sealing cover plate (312) and a fixed plug plate (313) which are vertically arranged in sequence and are vertically fixed on the outer circle of the piston rod body (311);

the piston cylinder (32) is sleeved on the outer circle of the piston rod body (311) in an up-down sliding manner;

the fixed plug plate (313) divides the inner cavity of the piston cylinder (32) into an upper cavity (301) and a lower cavity (302);

the upper end of the piston cylinder (32) is open, and a cover plate (312) is used for sealing the upper open end of the piston cylinder (32).

5. The ascending end hydraulic buffering device for a vehicle carrier plate according to claim 4, wherein,

the self-resetting piston cylinder (30) further comprises a resetting spring (33) for supplying a compressing elastic force and a movable plug plate (34) for installing the resetting spring (33);

the movable plug plate (34) is sleeved on the outer circle of the piston rod body (311) and is positioned between the sealing cover plate (312) and the fixed plug plate (313), and a limiting step (303) for limiting the downward movement of the movable plug plate (34) is arranged on the inner peripheral wall of the piston cylinder (32);

the reset spring (33) is arranged on the outer circle of the piston rod body (311), and two ends of the reset spring are respectively connected with the sealing cover plate (312) and the movable plug plate (34).

6. The ascending end hydraulic buffering device for a vehicle carrier plate according to claim 2, wherein,

the back pressure regulating circuit (40) comprises a pressure regulating circuit (41) and a one-way circuit (42), a throttle valve (43) arranged in the pressure regulating circuit (41) and a one-way valve (44) arranged in the one-way circuit (42);

two ends of the pressure regulating loop (41) are respectively communicated with the upper cavity (301) and the lower cavity (302);

both ends of the unidirectional loop (42) are respectively communicated with the pressure regulating loop (41) at the upstream and downstream of the throttle valve (43), and the unidirectional valve (44) is used for preventing hydraulic oil of the lower cavity (302) from directly flowing to the upper cavity (301).

7. The ascending end hydraulic buffering device for a vehicle carrier plate according to claim 1, wherein,

the buffering limit cylinder (50) comprises a steel column (51) vertically fixed on the bottom plate (20) and a rubber sleeve (52) arranged on the outer circle of the steel column (51) in an interference manner;

the lower end of the rubber sleeve (52) is supported on the bottom plate (20), and the upper end Gao Chugang column (51) of the rubber sleeve (52).

8. The ascending end hydraulic buffering device for a vehicle carrier plate according to claim 1, wherein,

the lifting tail end hydraulic buffer device for the vehicle carrying plate further comprises a plurality of groups of guiding limiting assemblies (60), wherein the plurality of groups of guiding limiting assemblies (60) are annularly arranged on the periphery of the self-resetting piston cylinder (30) and connected between the top plate (10) and the bottom plate (20) so as to be used for guiding the lifting of the vehicle carrying plate and limiting the shaking amplitude of the vehicle carrying plate when the lifting is stopped.

9. The ascending end hydraulic buffering device for a vehicle carrier plate according to claim 8, wherein,

the guide limiting assembly (60) comprises a guide rod (61) which is vertically arranged and the upper end of which is fixedly connected with the top plate (10), a rod sleeve (62) which is vertically fixed on the bottom plate (20), and a wear-resistant sleeve (63) which is detachably arranged at the top end of the rod sleeve (62);

the wear-resistant sleeve (63), the rod sleeve (62) and the bottom plate (20) are provided with a guide channel (601) for the guide rod (61) to penetrate.

10. A stereo garage, comprising:

the hydraulic buffer device for the ascending tail end of the vehicle carrying plate according to any one of claims 1 to 9, wherein the hydraulic buffer device is arranged between the transverse moving frame and the vehicle carrying plate.