CN212799388U - Crawler crane landing leg hydraulic pressure lock anti-clogging device - Google Patents

Abstract

The utility model discloses a crawler crane landing leg hydraulic pressure lock anti-clogging device, including installing the filtering bottom plate between hydraulic pressure lock and hydro-cylinder seat, two counter bores have been seted up to the upper surface of filtering bottom plate, and the central point that lies in two counter bores on filtering bottom plate puts and has seted up through-hole A and through-hole B respectively, and the lower extreme of through-hole A communicates with the oil outlet of hydro-cylinder seat, and the upper end communicates with the oil inlet of hydraulic pressure lock, and the upper end of through-hole B communicates with the oil-out of hydraulic pressure lock, and the lower extreme communicates with the oil inlet of hydro-cylinder seat; install the filter screen in the counter bore, install O type sealing washer between the inner wall of filter screen and counter bore, the sealing washer border sticiss with hydraulic pressure lock bottom surface, counter bore inside wall, the outer lane of filter screen and counter bore bottom butt respectively, impurity in the medium oil that the filter screen passes through filters, after the suitable time of work, if the change of will clearing up, only need the hexagon socket head cap screw of screwing out, will filter the bottom plate and dismantle and then dismantle filter screen and the sealing washer in the counter bore and clear up.

Description

Crawler crane landing leg hydraulic pressure lock anti-clogging device

Technical Field

The utility model relates to an anti-clogging device technical field, more specifically say, it relates to a crawler crane landing leg hydraulic pressure lock anti-clogging device.

Background

The support legs are important structural members of the miniature crawler crane, and play roles in supporting, dispersing pressure, reducing pressure intensity, expanding the working range of the crane and balancing equipment when the crane lifts a heavy object.

The support of landing leg, receive and release etc. and move then rely on hydraulic system to realize, and hydraulic system includes the hydro-cylinder seat and installs the hydraulic pressure lock on the hydro-cylinder seat, the hydraulic pressure lock will cause the unable locking of hydraulic pressure lock if blockking up, hydraulic system leaks, the landing leg that can't contract or pack up when the landing leg is in the support state falls a series of problems such as when the vehicle operation, still can appear simultaneously that oil pipe breaks and cause engineering equipment to damage or the major accident of personal injury or death because of the landing leg loses the effect under the unexpected circumstances such as.

A great deal of practical experience shows that the hydraulic lock is blocked to a great extent due to the fact that impurities of hydraulic oil or fine fragments which cannot be cleaned in the machining and manufacturing processes of the oil cylinder block a medium channel.

Therefore, the anti-blocking device for the support leg hydraulic lock of the crawler crane is designed, impurities in hydraulic oil can be effectively filtered, and normal operation of a crane hydraulic system is guaranteed.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model discloses an aim at providing a crawler crane landing leg hydraulic pressure lock anti-clogging device, it is installed between hydro-cylinder seat and hydraulic pressure lock, can effectively filter the impurity in the hydraulic oil to guarantee crane hydraulic system's normal operating.

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

the anti-blocking device for the support leg hydraulic lock of the crawler crane comprises a filtering bottom plate arranged between a hydraulic lock and a crane support leg oil cylinder seat, wherein two counter bores are formed in the upper surface of the filtering bottom plate, a through hole A and a through hole B are formed in the positions, located in the centers of the two counter bores, on the filtering bottom plate respectively, the lower end of the through hole A is communicated with an oil outlet hole of the oil cylinder seat, the upper end of the through hole A is communicated with an oil inlet of the hydraulic lock, the upper end of the through hole B is communicated with an oil outlet of the hydraulic lock, and the lower end of the through hole B;

the upper end surface of the filter bottom plate is tightly attached to the bottom surface of the hydraulic lock, and the lower end surface of the filter bottom plate is tightly attached to the mounting surface of the crane supporting leg oil cylinder base;

install the filter screen in two the counter bore the filter screen with install O type sealing washer between the inner wall of counter bore, the sealing washer border sticiss with hydraulic pressure lock bottom surface, counter bore inside wall, the outer lane of filter screen and counter bore bottom butt respectively.

The diameter and the position of the four holes on the filtering bottom plate are determined by the size and the position of the hydraulic lock and the corresponding oil inlet and outlet on the oil cylinder seat and the position of the inner hexagon screw which is installed in a penetrating way.

The utility model discloses further set up to: the filtering bottom plate is fixedly installed between the oil cylinder seat and the hydraulic lock through a cylindrical head socket head cap screw, and the cylindrical head socket head cap screw penetrates through the shell of the hydraulic lock and the filtering bottom plate and then is fixed with the oil cylinder seat through threads;

the inner hexagon screws are arranged in two numbers and are symmetrically distributed on two sides of the through hole A and the through hole B.

The utility model discloses further set up to: the filter screen and the filter bottom plate are made of austenitic stainless steel.

The utility model discloses further set up to: the sealing ring is made of rubber.

The utility model discloses further set up to: the mesh size of the filter screen is 60 meshes.

To sum up, the utility model discloses following beneficial effect has:

through arranging the filtering bottom plate, installing the filter screen and the sealing ring in the counter bore of the filtering bottom plate, installing and locking the filtering bottom plate between the oil cylinder seat and the hydraulic cylinder by using the hexagon socket head cap screws, along with the circulation of hydraulic oil in the through hole A and the through hole B, impurities in the hydraulic oil or residual fragments generated during the oil cylinder processing can be brought into the channel of the through hole A and the through hole B, the filter screen is filtered in a flowing mode, then, the hydraulic oil of the system can continuously complete the circulation of a hydraulic oil circuit of the system in a clean, safe and efficient mode, only the hexagon socket head cap screws need to be screwed out if the cleaning and replacement are needed after the proper working time, the filtering bottom plate is disassembled, then, the filter screen and the sealing ring in the counter bore are disassembled, the impurities in the hydraulic oil can be effectively filtered by the whole device, the whole operation process is simple and convenient, The manufacturing cost is low, the maintenance and the replacement are easy, and the structures of the oil cylinder and the hydraulic lock are not changed;

through all setting up filter screen and filter bottom plate into austenite stainless steel material, can guarantee the corrosion resistance and the impact resistance of filter screen and filter bottom plate.

Drawings

FIG. 1 is an overall schematic view of a hydraulic lock, a cylinder block and a filter base plate;

FIG. 2 is a schematic view of the installation of the filter base plate, hydraulic lock and cylinder block;

FIG. 3 is a distribution of the screen and the holes of the socket head cap screws on the filter bed;

fig. 4 is an exploded view of a filter floor side cross-sectional view.

Reference numerals: 1. hydraulic locking; 2. a cylinder block; 3. a filter base plate; 4. a counter bore; 5. a through hole A; 6. a through hole B; 7. a seal ring; 8. a socket head cap screw; 9. filtering with a screen; 10. and (4) punching of the socket head cap screw.

Detailed Description

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

Example (b): the utility model provides a crawler crane landing leg hydraulic pressure lock anti-clogging device, its impurity that can effectively filter in the hydraulic oil. As shown in fig. 1, the crane support leg oil cylinder base comprises a filter base plate 3 installed between a hydraulic lock 1 and a crane support leg oil cylinder base 2, referring to fig. 2 and 3, two counter bores 4 are formed in the upper surface of the filter base plate 3, a through hole a5 and a through hole B6 are formed in the center positions of the two counter bores 4 on the filter base plate 3 respectively, the lower end of the through hole a5 is communicated with an oil outlet of the oil cylinder base 2, the upper end of the through hole a is communicated with an oil inlet of the hydraulic lock 1, the upper end of the through hole B6 is communicated with an oil outlet of the hydraulic lock 1, and the lower end of the; the upper end face of the filter bottom plate 3 is tightly attached to the bottom face of the hydraulic lock 1, and the lower end face of the filter bottom plate 3 is tightly attached to the mounting face of the crane supporting leg oil cylinder base 2.

With reference to fig. 4, install filter screen 9 in two counter bores 4, spill over from filter screen 9 periphery when avoiding hydraulic oil to pass filter screen 9, install O type sealing washer 7 between the inner wall of filter screen 9 and counter bore 4, sealing washer 7 border is compressed tightly with 1 bottom surface of hydraulic pressure lock, the 4 inside walls of counter bore, the outer lane of filter screen 9 and the 4 bottom butts of counter bore respectively. The filtering bottom plate 3 is fixedly arranged between the oil cylinder seat 2 and the hydraulic lock 1 through the inner hexagon screws 8 of the cylinder head, the inner hexagon screws 8 of the cylinder head penetrate through the shell of the hydraulic lock 1 and the filtering bottom plate 3 and then are fixed with the oil cylinder seat 2 in a threaded mode, the number of the inner hexagon screws 8 is two, and the inner hexagon screws are symmetrically distributed on two sides of the through hole A5 and the through hole B6.

Referring to fig. 3, the sizes and positions of the through holes a5, B6 and the through holes 10 of the socket head cap screws on the filter base plate 3 are determined by the sizes and positions of the corresponding oil inlets and oil outlets on the hydraulic lock 1 and the cylinder block 2 and the positions where the socket head cap screws 8 are installed.

The filter screen 9 and the seal ring 7 are installed in the counter bore 4 of the filter bottom plate 3, the filter bottom plate 3 is installed and locked between the oil cylinder seat 2 and the hydraulic cylinder through the hexagon socket head cap screws 8, the hydraulic oil is circulated in the through hole A5 and the through hole B6 in a circulating manner, impurities in the hydraulic oil or fragments remained during oil cylinder processing can be brought into a channel of the through hole A5 and the through hole B6, the filter screen flows through for filtering, then the hydraulic oil is cleaned, safe and efficient, the circulation of a hydraulic oil circuit of the system is continuously completed, after the hydraulic oil works for a proper time, if cleaning and replacement are needed, the hexagon socket head cap screws 8 only need to be screwed out, the filter bottom plate 3 is detached, the filter screen 9 and the seal ring 7 in the counter bore 4 are detached, and then cleaning is carried out.

Because the hydraulic oil constantly passes through the through hole A5, the through hole B6 and the filter screen 9 of the filter bottom plate 3, the filter screen 9 and the filter bottom plate 3 are made of corrosion-resistant and impact-resistant austenitic stainless steel materials.

The material of sealing washer 7 chooses for use the rubber material, and it has fine leakproofness and corrosion resistance, can effectively avoid revealing of hydraulic oil. In order to ensure that the filter screen 9 can effectively filter impurities in the hydraulic oil, the mesh size of the filter screen 9 is 60 meshes.

Above only the utility model discloses an it is preferred embodiment, the utility model discloses a scope of protection not only limits in above-mentioned embodiment, and the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims (5)

1. The anti-blocking device for the support leg hydraulic lock of the crawler crane is characterized by comprising a filtering bottom plate (3) arranged between a hydraulic lock (1) and a crane support leg oil cylinder seat (2), wherein two counter bores (4) are formed in the upper surface of the filtering bottom plate (3), a through hole A (5) and a through hole B (6) are formed in the positions, located in the centers of the two counter bores (4), of the filtering bottom plate (3), the lower end of the through hole A (5) is communicated with an oil outlet of the oil cylinder seat (2), the upper end of the through hole A is communicated with an oil inlet of the hydraulic lock (1), the upper end of the through hole B (6) is communicated with the oil outlet of the hydraulic lock (1), and the lower end of the through hole B is communicated with the oil inlet of the;

the upper end face of the filter bottom plate (3) is tightly attached to the bottom face of the hydraulic lock (1), and the lower end face of the filter bottom plate (3) is tightly attached to the mounting face of the crane support leg oil cylinder base (2);

install filter screen (9) in counter bore (4) filter screen (9) with install O type sealing washer (7) between the inner wall of counter bore (4), sealing washer (7) border is sticis with bottom surface, counter bore (4) inside wall, filter screen (9) outer lane and counter bore (4) bottom butt of hydraulic pressure lock (1) respectively.

2. The hydraulic lock anti-blocking device for the support leg of the crawler crane according to claim 1, wherein the filter base plate (3) is fixedly installed between the oil cylinder seat (2) and the hydraulic lock (1) through a socket head cap screw (8), and the socket head cap screw (8) penetrates through a shell of the hydraulic lock (1) and the filter base plate (3) and then is fixed with the oil cylinder seat (2) in a threaded manner;

the inner hexagon screws (8) are arranged in two numbers and are symmetrically distributed on two sides of the through hole A (5) and the through hole B (6).

3. Hydraulic lock anti-jamming device for crawler crane legs according to claim 1, characterized in that the filtering net (9) and the filtering bottom plate (3) are made of austenitic stainless steel.

4. The hydraulic lock anti-clogging device for the support leg of the crawler crane according to claim 1, characterized in that the material of the sealing ring (7) is rubber.

5. Crawler crane leg hydraulic lock anti-jamming device according to claim 1, characterized in that the mesh size of the screen (9) is 60 mesh.

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