CN214534202U

CN214534202U - Adjustable oil pressure buffer

Info

Publication number: CN214534202U
Application number: CN202022847571.2U
Authority: CN
Inventors: 周伟贤
Original assignee: Shanghai Ark Pneumatic Technology Co ltd
Current assignee: Shanghai Ark Pneumatic Technology Co ltd
Priority date: 2020-12-01
Filing date: 2020-12-01
Publication date: 2021-10-29
Anticipated expiration: 2030-12-01

Abstract

The utility model relates to the buffering field, in particular to an adjustable hydraulic buffer, which comprises an upper pressure plate, wherein the middle part of the upper pressure plate is provided with an upper pressing block which is vertically downward, the lower end of the upper pressing block is slidably connected with a pressing groove arranged at the upper part of a lower pressing block, an oil cavity is arranged in the lower pressing block at the lower part of the pressing groove, a through internal thread hole is arranged in the lower pressing block at the lower part of the oil cavity, the internal thread hole is in threaded connection with an external thread rod, the lower end of the external thread rod is provided with a cross-shaped cylinder, the cross-shaped cylinder is in contact connection with a limiting device, through the setting of last briquetting, lower briquetting, indent, oil pocket, internal thread hole, external screw thread cylinder, cross flower cylinder and stop device, make the external screw thread cylinder realize the regulation of buffer capacity through the space of extrusion oil pocket, make its bradyseism ability adjustable, practical range is more extensive, has avoided the trouble that the buffer of different bradyseism ability frequently changed.

Description

Adjustable oil pressure buffer

Technical Field

The utility model relates to a buffering field specifically is an adjustable hydraulic buffer.

Background

The hydraulic buffer is a hydraulic device which converts impact kinetic energy into hydraulic oil heat energy to realize the final stable stop of the linear deceleration of an object, in the field of decompression, a spring, rubber and cylinder buffer is continuously linearly at the lowest level at the initial stage of the stroke of a moving object, the reaction force is gradually enhanced along with the increase of the stroke, the reaction force also reaches the highest peak when the stroke approaches the tail end, the energy of the moving object cannot be absorbed but is temporarily stored, the moving object inevitably generates great rebound finally to cause mechanical damage, the existing damper is used as a damping device, but the defect of the damper in the aspect of an oil hole system is that the moving object can be stopped instantly by the high-peak reaction force at the initial stage of the damping stroke to cause great mechanical impact, then the damper slowly slides to the tail end of the stroke, but the existing buffer can only carry out damping by fixed pressure, the usage is single, and the cushioning device needs to be replaced when different cushioning capabilities are needed, which is very troublesome.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an adjustable hydraulic buffer to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

the utility model provides an adjustable hydraulic buffer, includes the top board, and the top board mid-mounting has vertical decurrent briquetting, goes up briquetting lower extreme sliding connection and has the indent that briquetting upper portion set up down, has seted up the oil pocket in the lower briquetting of indent lower part, has seted up penetrating internal thread hole in the lower briquetting of oil pocket lower part, and internal thread hole threaded connection has the external screw thread pole, and the cross flower cylinder is installed to external screw thread pole lower extreme, and the cross flower cylinder contact is connected with stop device.

As a further aspect of the present invention: the limiting device comprises a circular groove arranged on the upper portion of the cross-shaped cylinder, one side of the circular groove is in contact connection with a limiting rod, and the other end of the limiting rod is in contact connection with one circular groove arranged in the fixing plate.

As a further aspect of the present invention: the upper pressure plate and the lower pressure plate are connected through a plurality of groups of first hollow cylinders in sliding connection and first cylinders.

As a further aspect of the present invention: the upper pressing block and the lower pressing block are connected through a plurality of groups of first telescopic springs.

As a further aspect of the present invention: and the upper pressure plate is connected with the lower pressure plate through a second telescopic spring.

As a further aspect of the present invention: and the upper part of the lower pressing block is provided with a liquid increasing groove communicated with the oil cavity.

Compared with the prior art, the beneficial effects of the utility model are that: through the setting of last briquetting, lower briquetting, indent, oil pocket, internal thread hole, external screw thread cylinder, cross flower cylinder and stop device, make the external screw thread cylinder realize the regulation of buffer capacity through the space of extrusion oil pocket, make its bradyseism ability adjustable, practical range is more extensive, has avoided the trouble that the buffer of different bradyseism ability frequently changed.

Drawings

Fig. 1 is a schematic diagram of an adjustable hydraulic shock absorber.

Fig. 2 is a schematic structural diagram of an external threaded cylinder in an adjustable hydraulic shock absorber.

Fig. 3 is a schematic structural diagram of a second extension spring in an adjustable hydraulic shock absorber.

In the figure: 1-upper pressing plate, 2-upper pressing block, 3-first hollow cylinder, 4-first cylinder, 5-lower pressing plate, 6-first expansion spring, 7-second expansion spring, 8-lower pressing block, 9-liquid increasing groove, 10-oil cavity, 11-pressing groove, 12-external threaded rod, 13-internal threaded hole, 14-fixing plate, 15-circular groove, 16-limiting rod, 17-circular groove and 18-cross flower cylinder.

Detailed Description

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

In the description of the present invention, it is to be understood that the terms "central", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing and simplifying the description, but not for indicating or implying that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the invention, and further that the terms "first", "second", etc., are used only for descriptive purposes and are not to indicate or imply relative importance or imply the number of technical features being referred to, whereby the features defined as "first", "second", etc., may explicitly or implicitly include one or more such features, in the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; the two elements may be directly connected or indirectly connected through an intermediate medium, or the two elements may be connected through an intermediate medium, and the specific meaning of the above terms in the present invention can be understood by those skilled in the art through specific situations.

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

Example 1

Referring to fig. 1 ~ 3, in the embodiment of the utility model, an adjustable hydraulic buffer, including

top board

1, 1 mid-mounting of top board has vertical decurrent last briquetting 2, goes up 2 lower extreme sliding connection of briquetting have the indent 11 that 8 upper portions of briquetting set up down, has seted up oil pocket 10 in the lower briquetting 8 of indent 11 lower part, has seted up penetrating internal thread hole 13 in the lower briquetting 8 of oil pocket 10 lower part, and internal thread hole 13 threaded connection has external screw rod 12, and cross flower cylinder 18 is installed to external screw rod 12 lower extreme, and cross flower cylinder 18 contact connection has stop device.

Further, stop device is including seting up at the circular recess 17 on cross flower cylinder 18 upper portion, and circular recess 17 one side contact is connected with gag lever post 16, and gag lever post 16 other end contact is connected with one of them circular recess 15 of seting up in the fixed plate 14, connect through a plurality of groups sliding connection's first cavity drum 3 and first cylinder 4 between upper plate 1 and the lower pressure plate 5, connect through a plurality of groups first expanding spring 6 between upper plate 2 and the lower pressure piece 8, connect through second expanding spring 7 between upper plate 1 and the lower pressure plate 5.

Example 2

top board

Furthermore, the upper part of the lower pressing block 8 is provided with a liquid increasing groove 9 communicated with an oil cavity 10 for increasing the maximum buffer stroke of the device.

The utility model discloses a theory of operation is: when pressure is received, the pressing grooves 11 in the upper pressing block 2 and the lower pressing block 8 slide, oil in the oil cavity 10 is compressed, the purpose of buffering is achieved, when large or small buffering force is needed, the limiting rod 16 is rotated, the limiting rod 16 is separated from the circular groove 17, the limiting rod 16 is pulled out from the external threaded rod 12 after being separated from the circular groove 17, the cross-shaped cylinder 18 is rotated, the cross-shaped cylinder 18 drives the external threaded cylinder 12 to rotate, the space in the oil cavity 10 is increased or reduced through the external threaded cylinder 12, the buffering capacity of the device is adjusted, meanwhile, the first telescopic spring 6 and the second telescopic spring 7 are arranged to perform auxiliary buffering, the maximum stroke of the device is limited through the arrangement of the first hollow cylinder 3 and the first cylinder 4, and burst caused by the fact that the pressure of the oil cavity 10 is too large is avoided.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides an adjustable oil buffer, including top board (1), a serial communication port, top board (1) mid-mounting has vertical decurrent briquetting (2), go up briquetting (2) lower extreme sliding connection has indent (11) that briquetting (8) upper portion set up down, oil pocket (10) have been seted up in lower briquetting (8) of indent (11) lower part, penetrating internal thread hole (13) have been seted up in lower briquetting (8) of oil pocket (10) lower part, internal thread hole (13) threaded connection has external screw rod (12), cross-shaped cylinder (18) are installed to external screw rod (12) lower extreme, cross-shaped cylinder (18) contact connection has stop device.

2. An adjustable hydraulic shock absorber according to claim 1, wherein the limiting means comprises a circular groove (17) formed in the upper portion of the cruciform cylinder (18), one side of the circular groove (17) is in contact with a limiting rod (16), and the other end of the limiting rod (16) is in contact with one of the circular grooves (15) formed in the fixing plate (14).

3. An adjustable hydraulic shock absorber according to claim 2, wherein the upper platen (1) and the lower platen (5) are connected by a plurality of sets of slidably connected first hollow cylinders (3) and first cylinders (4).

4. An adjustable hydraulic shock absorber according to claim 3, wherein the upper pressure block (2) and the lower pressure block (8) are connected by a plurality of sets of first extension springs (6).

5. An adjustable hydraulic shock absorber according to claim 4, wherein the upper pressure plate (1) and the lower pressure plate (5) are connected by a second extension spring (7).

6. The adjustable oil buffer according to claim 1 or 2, wherein the upper part of the lower pressing block (8) is provided with a liquid increasing groove (9) communicated with the oil cavity (10).