CN209099234U - A kind of hydraulic lifting height-limiting frame of oil-leakage-prevention - Google Patents

Abstract

The utility model discloses a kind of hydraulic lifting height-limiting frames of oil-leakage-prevention, including a symmetrically arranged hydraulic stem and cross bar, the hydraulic stem is made of cylinder body and piston rod, the bottom of the piston rod is through cylinder body and extends to inner cavity, the bottom of the cylinder body is fixedly installed with bottom cover, top cover is provided at the top of the cylinder body, the top of the cylinder body be provided be flexibly connected with piston rod containing oil-lubricated bearing, the outer wall containing oil-lubricated bearing is fixedly connected with cylinder body and top cover, the inner cavity top of the cylinder body is fixedly installed with block, the bottom fixed connection and sealing gasket of the block, the bottom of the gasket seal is fixedly connected with spring, the bottom of the spring is fixedly connected with piston, the spring is socketed on the surface of piston rod, the piston is fixedly mounted on the bottom end of piston rod, the side wall of the piston is fixedly installed with magnetite.The beneficial effects of the utility model are: the oil leakage phenomenon of hydraulic stem can be effectively reduced, increase the service life of height-limiting frame.

Description

A kind of hydraulic lifting height-limiting frame of oil-leakage-prevention

Technical field

The utility model relates to height-limiting frame field, the hydraulic lifting height-limiting frame of specially a kind of oil-leakage-prevention.

Background technique

Means of transportation are also known as traffic safety facilities, and traffic safety facilities are for guarantee driving safety, mitigation latent defect journey Degree, plays an important role.Good safety devices system should have traffic administration, security protection, traffic guidance, isolation closing, Prevent the multiple functions such as dazzle.Traffic accident in order to prevent guarantees traffic pleasantly, plays the function of road comprehensively, it is necessary to be arranged Traffic safety measure, existing highway height-limiting frame is during practical application, since the carelessness of driver is easily scraped by car body It even destroys, causes certain economic loss, therefore occur some adjustable height hydraulic height-limiting frames on the market, but this Planting hydraulic height-limiting frame, often there is the phenomenon that some oil leaks in it.

Utility model content

The utility model solve the technical issues of be to overcome defect of the existing technology, a kind of liquid of oil-leakage-prevention is provided Pressure lifting height-limiting frame.The hydraulic lifting height-limiting frame of the oil-leakage-prevention has the oil leakage phenomenon that can effectively reduce hydraulic stem, increases The characteristics of service life of height-limiting frame.

To achieve the above object, the utility model provides the following technical solutions: a kind of hydraulic lifting height-limiting frame of oil-leakage-prevention, Including a symmetrically arranged hydraulic stem and cross bar, the hydraulic stem is made of cylinder body and piston rod, and the bottom of the piston rod is passed through It wears cylinder body and extends to inner cavity, the bottom of the cylinder body is fixedly installed with bottom cover, and top cover is provided at the top of the cylinder body, described The top of cylinder body be provided be flexibly connected with piston rod containing oil-lubricated bearing, the outer wall containing oil-lubricated bearing and cylinder body and Top cover is fixedly connected, and the inner cavity top of the cylinder body is fixedly installed with block, the bottom fixed connection and sealing gasket of the block, The bottom of the gasket seal is fixedly connected with spring, and the bottom of the spring is fixedly connected with piston, and the spring is socketed on piston The surface of bar, the piston are fixedly mounted on the bottom end of piston rod, and the side wall of the piston is fixedly installed with magnetite, the piston Bottom be provided with cushion, offer first import and export and second import and export on the outer wall of the cylinder body, first disengaging Filter is provided in mouth and second import and export.

Preferably, the circular hole to match with piston rod is offered on the block and gasket seal, and block diameter is small In beginning with annular oil leak slot on the diameter of cylinder interior, the side wall of the block, the annular oil leak slot is arranged obliquely.

Preferably, the top diameter of the gasket seal is less than the diameter of bottom, and its base diameter and inboard wall of cylinder block are straight Diameter is equal.

Preferably, the magnetite is concave setting, offers the notch to match with magnetite on the side wall of the piston, The magnetic switch that can incude magnetite is provided on the hydraulic stem.

Preferably, the intracavity bottom setting of the bottom slightly protruding of the piston rod, the cylinder body is fluted.

Compared with prior art, the utility model has the beneficial effects that the oil leakage phenomenon of hydraulic stem can be effectively reduced, increase Add the service life of height-limiting frame.

Detailed description of the invention

FIG. 1 is a schematic structural view of the utility model；

Fig. 2 is the utility model hydraulic stem structural schematic diagram.

Figure label: 1 cylinder body, 2 piston rods, 3 hydraulic stems, 4 bottom covers, 5 top covers, 6 are containing oil-lubricated bearing, 7 blocks, 8 sealings Gasket, 9 springs, 10 pistons, 11 magnetites, 12 first import and exports, 13 second import and exports, 14 filters, 15 annular oil leak slots, 16 cross Bar.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work Every other embodiment obtained, fall within the protection scope of the utility model.

The utility model provides a kind of technical solution referring to FIG. 1-2: a kind of hydraulic lifting height-limiting frame of oil-leakage-prevention, packet A symmetrically arranged hydraulic stem 3 and cross bar 16 are included, the hydraulic stem 3 is made of cylinder body 1 and piston rod 2, the bottom of the piston rod 2 The intracavity bottom setting of portion's slightly protruding, the cylinder body 1 is fluted, and the bottom of the piston rod 2 through cylinder body 1 and extends to interior Chamber, the top of the piston rod 2 are additionally provided with the fixed block for connecting cross bar 16, and the bottom of the cylinder body 1 is fixedly installed with Bottom cover 4, the top of the cylinder body 1 are provided with top cover 5, and the top of the cylinder body 1 is provided with the oil-containing being flexibly connected with piston rod 2 Bearing 6 is lubricated, the outer wall containing oil-lubricated bearing 6 is fixedly connected with cylinder body 1 and top cover 5, and the inner cavity top of the cylinder body 1 is solid Dingan County is equipped with block 7, it is notable that offers the circle to match with piston rod 2 on the block 7 and gasket seal 8 Hole, and 7 diameter of block is less than the diameter inside cylinder body 1, begins with annular oil leak slot 15, the ring on the side wall of the block 7 Shape oil leak slot 15 is arranged obliquely；The bottom fixed connection and sealing gasket 8 of the block 7, it is notable that the gasket The top diameter of piece 8 is less than the diameter of bottom, and its base diameter is equal with 1 inner diameter of cylinder body, the bottom of the gasket seal 8 Portion is fixedly connected with spring 9, and the bottom of the spring 9 is fixedly connected with piston 10, and the spring 9 is socketed on the surface of piston rod 2, institute The bottom end that piston 10 is fixedly mounted on piston rod 2 is stated, the side wall of the piston 10 is fixedly installed with magnetite 11, noticeable It is that the magnetite 11 is concave setting, offers the notch to match with magnetite 11, the liquid on the side wall of the piston 10 The magnetic switch that can incude magnetite is provided on compression bar 3；The bottom of the piston 10 is provided with cushion 11, the cylinder body 1 First import and export 12 and second import and export 13 are offered on outer wall, are respectively provided in the first import and export 12 and second import and export 13 There is filter 14.

Working principle

Piston rod 2 can take the oil liquid of a part out of during exercise, and oil liquid is passing through the annular oil leak slot 15 on 7 side wall of block When can flow out, just gap of the stream between 1 inner cavity top of gasket seal 8 and cylinder body, and the gasket seal 8 of up-thin-low-thick formula So that piston rod 2 will not be recessed upwards when rising, it then can be recessed due to suction and top oil pressure in decline, in this way Oil liquid between 1 gap of gasket seal 8 and cylinder body returns into the inner cavity major part of cylinder body 1；Pass through entire gasket seal 8 Cooperation block 7 can reduce oil liquid and flow out along piston rod 2；Filter 14 then plays the role of filtering；Magnetite 11 cooperates magnetism Switch can know the position of piston 10 constantly, facilitate the height of adjustment height-limiting frame.

While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art, It is understood that these embodiments can be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaired Change, replacement and variant, the scope of the utility model is defined by the appended claims and the equivalents thereof.

Claims (5)

1. a kind of hydraulic lifting height-limiting frame of oil-leakage-prevention, including a symmetrically arranged hydraulic stem (3) and cross bar (16), described hydraulic Bar (3) is made of cylinder body (1) and piston rod (2), and the bottom of the piston rod (2) through cylinder body (1) and extends to inner cavity, special Sign is: the bottom of the cylinder body (1) is fixedly installed with bottom cover (4), is provided with top cover (5) at the top of the cylinder body (1), described The top of cylinder body (1) is provided with (6) containing oil-lubricated bearing being flexibly connected with piston rod (2), described containing oil-lubricated bearing (6) Outer wall is fixedly connected with cylinder body (1) and top cover (5), and the inner cavity top of the cylinder body (1) is fixedly installed with block (7), the gear The bottom of the bottom fixed connection and sealing gasket (8) of block (7), the gasket seal (8) is fixedly connected with spring (9), the spring (9) bottom is fixedly connected piston (10), and the spring (9) is socketed on the surface of piston rod (2), the fixed peace of the piston (10) Mounted in the bottom end of piston rod (2), the side wall of the piston (10) is fixedly installed with magnetite (11), and the bottom of the piston (10) is set Be equipped with cushion, offer first import and export (12) and second import and export (13) on the outer wall of the cylinder body (1), described first into Filter (14) are provided in outlet (12) and second import and export (13).

2. a kind of hydraulic lifting height-limiting frame of oil-leakage-prevention according to claim 1, it is characterised in that: the block (7) and The circular hole to match with piston rod (2) is offered on gasket seal (8), and block (7) diameter is less than the straight of cylinder body (1) inside Diameter, annular oil leak slot (15) is begun on the side wall of the block (7), and the annular oil leak slot (15) is arranged obliquely.

3. a kind of hydraulic lifting height-limiting frame of oil-leakage-prevention according to claim 1, it is characterised in that: the gasket seal (8) top diameter is less than the diameter of bottom, and its base diameter is equal with cylinder body (1) inner diameter.

4. a kind of hydraulic lifting height-limiting frame of oil-leakage-prevention according to claim 1, it is characterised in that: the magnetite (11) is Concave is arranged, and the notch to match with magnetite (11) is offered on the side wall of the piston (10), is set on the hydraulic stem (3) It is equipped with the magnetic switch that can incude magnetite.

5. a kind of hydraulic lifting height-limiting frame of oil-leakage-prevention according to claim 1, it is characterised in that: the piston rod (2) Bottom slightly protruding, the cylinder body (1) intracavity bottom setting it is fluted.