CN218325600U - Two-way filter equipment of hydraulic cylinder and crawler crane - Google Patents
Two-way filter equipment of hydraulic cylinder and crawler crane Download PDFInfo
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- CN218325600U CN218325600U CN202222763296.5U CN202222763296U CN218325600U CN 218325600 U CN218325600 U CN 218325600U CN 202222763296 U CN202222763296 U CN 202222763296U CN 218325600 U CN218325600 U CN 218325600U
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Abstract
The utility model discloses a hydraulic cylinder bidirectional filtering device and a crawler crane, which belong to the technical field of engineering machinery and comprise a hydraulic cylinder, wherein a bidirectional filtering module is arranged on an oil way of the hydraulic cylinder; the bidirectional filtering module comprises an oil inlet branch and an oil outlet branch; the first filtering component and the first one-way valve are sequentially arranged on the oil inlet branch road along the oil inlet direction; a second filtering component and a second one-way valve are sequentially arranged on the oil outlet branch in the oil outlet direction; an oil inlet of the first filtering assembly and an oil outlet of the second one-way valve are communicated to the first oil port or the second oil port; an oil outlet of the first one-way valve and an oil inlet of the second filter assembly are communicated to the rodless cavity or the rod cavity; through increasing a plurality of filtering component on hydraulic cylinder's oil feed oil circuit and oil circuit, realize that hydraulic cylinder realizes filtering in real time at the in-process that stretches out and retract, further reduced the damage of external impurity to hydraulic cylinder.
Description
Technical Field
The utility model belongs to the technical field of engineering machine tool, concretely relates to two-way filter equipment of hydraulic cylinder and crawler crane.
Background
At present, both an auxiliary hydraulic system and a backward-tilting prevention hydraulic system of a crawler crane adopt a hydraulic oil cylinder as an execution element, and the auxiliary systems, such as a rear counterweight pushing system and a rear counterweight lifting system, are used as main auxiliary functions in the working process and mainly participate in the position adjustment function of a counterweight system during the hoisting of the crane; the anti-back-tipping system is mainly used for supporting the main arm and the super-lift arm in the working process of the crane and preventing the main arm and the super-lift arm from over-tipping at a large angle, if the oil cylinder is abnormal in the working process, the back thrust of the arm support is influenced, the risk of backward tipping of the arm support is caused, and the performance of the whole crane is greatly influenced.
The conventional crawler crane auxiliary system and the anti-back-tipping system respectively adopt plunger pumps for supplying oil, pipelines are directly connected with a hydraulic cylinder after reversing through a reversing valve, impurities (burrs, scrap iron, particles, paint slag and the like) inevitably enter the hydraulic cylinder in the manufacturing process and the assembling process of a multi-way valve of the hydraulic cylinder, and the impurities enter the inside of the hydraulic cylinder and then move along with a piston, so that the impurities can scratch and seal the inside of the hydraulic cylinder, cause the internal leakage of the hydraulic cylinder, cause the failure of the hydraulic cylinder and further influence the safety of the whole crane.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a hydraulic cylinder two-way filter equipment and crawler crane can carry out two-way filtration to the hydraulic oil of business turn over hydraulic cylinder, further reduces impurity entering hydraulic system, improves whole car security and reliability.
In order to solve the problem, the utility model adopts the following technical scheme:
on one hand, the embodiment of the utility model provides a two-way filter equipment of hydraulic cylinder, including hydraulic cylinder, be equipped with rodless chamber and pole chamber on the hydraulic cylinder, rodless chamber passes through the oil circuit with first hydraulic fluid port and communicates, pole chamber passes through the oil circuit with the second hydraulic fluid port and communicates, two-way filter module on the oil circuit between pole chamber and first hydraulic fluid port, pole chamber and the second hydraulic fluid port;
the bidirectional filtering module comprises an oil inlet branch and an oil outlet branch; the first filtering component and the first one-way valve are sequentially arranged on the oil inlet branch road along the oil inlet direction; a second filtering component and a second one-way valve are sequentially arranged on the oil outlet branch in the oil outlet direction; the first one-way valve and the second one-way valve are arranged in opposite directions; an oil inlet of the first filtering assembly and an oil outlet of the second one-way valve are communicated to the first oil port or the second oil port; an oil outlet of the first check valve and an oil inlet of the second filter assembly are communicated to the rodless cavity or the rod cavity.
Preferably, the first filter assembly comprises a first filter and a first spring-type one-way valve; an oil inlet of the first filter and an oil inlet of the first spring type check valve are communicated to the first oil port or the second oil port; an oil outlet of the first filter and an oil outlet of the first spring type one-way valve are communicated to an oil inlet of the first one-way valve; the first spring type check valve and the first check valve are arranged in the same direction.
Preferably, the second filter assembly comprises a second filter and a second spring-type one-way valve; an oil inlet of the second filter and an oil inlet of the second spring type one-way valve are communicated to the rodless cavity or the rod cavity; an oil outlet of the second filter and an oil outlet of the second spring type one-way valve are communicated to an oil inlet of the second one-way valve; the second spring type one-way valve and the second one-way valve are arranged in the same direction.
Preferably, the first filter and the second filter are high-pressure filters with bypass pressure relief valves, and the filtering precision is 5u.
Preferably, the pressure of the first spring type check valve and the second spring type check valve is 5bar.
On the other hand, the embodiment of the utility model provides a crawler crane is still provided, crawler crane's automobile body on be equipped with the two-way filter equipment of hydraulic cylinder.
Compared with the prior art, the utility model discloses the beneficial effect who reaches is:
compared with the prior art, the utility model is provided with the bidirectional filtering module on the oil path of the hydraulic oil cylinder; the bidirectional filtering module comprises an oil inlet branch and an oil outlet branch; the oil inlet branch is sequentially provided with a first filtering assembly and a first one-way valve along the oil inlet direction; a second filtering component and a second one-way valve are sequentially arranged on the oil outlet branch in the oil outlet direction; the first one-way valve and the second one-way valve are arranged in opposite directions; an oil inlet of the first filtering assembly and an oil outlet of the second one-way valve are communicated to the first oil port or the second oil port; an oil outlet of the first one-way valve and an oil inlet of the second filter assembly are communicated to the rodless cavity or the rod cavity; through increasing a plurality of filtering component on hydraulic cylinder's oil feed oil circuit and oil circuit that produces oil, realize that hydraulic cylinder realizes filtering in real time at the in-process that stretches out and retracts, further reduced external impurity to hydraulic cylinder's damage, effectively reduced hydraulic cylinder internal leakage, not pressurize the phenomenon, improved the security and the reliability of whole car.
Drawings
Fig. 1 is a schematic diagram of a bidirectional filtering device for a hydraulic cylinder according to an embodiment of the present invention;
in the figure: 1-a hydraulic oil cylinder; 2-rodless cavities; 3-a rod cavity; 4-a first oil port; 5-a second oil port; 6-a first one-way valve; 7-a first filter assembly; 71-a first spring-loaded check valve; 72-a first filter; 8-a second one-way valve; 9-a second filter assembly; 91-a second filter; 92-second spring-loaded check valve.
Detailed Description
The following embodiments are only used to illustrate the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, are not to be construed as limiting the present invention.
In addition, 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; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
Example 1
On one hand, as shown in fig. 1, the embodiment of the utility model provides a two-way filter equipment of hydraulic cylinder, including hydraulic cylinder 1, be equipped with rodless chamber 2 and have pole chamber 3 on hydraulic cylinder 1, rodless chamber 2 passes through the oil circuit with first hydraulic fluid port 4 and communicates, have pole chamber 3 and second hydraulic fluid port 5 pass through the oil circuit and communicate, two-way filter module on the oil circuit between rodless chamber 2 and first hydraulic fluid port 4, have pole chamber 3 and second hydraulic fluid port 5; the bidirectional filtering module comprises an oil inlet branch and an oil outlet branch; the bidirectional filtering module is used for filtering impurities in hydraulic oil on the oil inlet branch and the oil outlet branch.
The first filtering component 7 and the first one-way valve 6 are sequentially arranged on the oil inlet branch road along the oil inlet direction; a second filtering component 9 and a second one-way valve 8 are sequentially arranged on the oil outlet branch in the oil outlet direction; the first check valve 6 and the second check valve 8 are arranged in opposite directions; an oil inlet of the first filtering component 7 and an oil outlet of the second one-way valve 8 are communicated to the first oil port 4 or the second oil port 5; an oil outlet of the first check valve 6 and an oil inlet of the second filter assembly 9 are communicated to the rodless cavity 2 or the rod cavity 3.
The first filter assembly 7 comprises a first filter 72 and a first spring-loaded check valve 71; an oil inlet of the first filter 72 and an oil inlet of the first spring type check valve 71 are communicated to the first oil port 4 or the second oil port 5; an oil outlet of the first filter 72 and an oil outlet of the first spring type one-way valve 71 are communicated to an oil inlet of the first one-way valve 6; the first spring type check valve 71 and the first check valve 6 are arranged in the same direction;
the second filter assembly 9 comprises a second filter 91 and a second spring-type check valve 92; an oil inlet of the second filter 91 and an oil inlet of the second spring type check valve 92 are communicated to the rodless cavity 2 or the rod cavity 3; an oil outlet of the second filter 91 and an oil outlet of the second spring type check valve 92 are communicated to an oil inlet of the second check valve 8; the second spring type check valve 92 and the second check valve 8 are arranged in the same direction; the first filter 72 and the second filter 91 are high-pressure filters with bypass relief valves, and the filtering precision is 5u; the pressure of the first spring type one-way valve 71 and the second spring type one-way valve 92 is 5bar;
compared with the prior art, the utility model, through increase a plurality of filtering component on hydraulic cylinder 1's oil feed oil circuit and the oil circuit that produces oil, realize that hydraulic cylinder 1 realizes filtering in real time stretching out and the in-process that retracts, further reduced external impurity to hydraulic cylinder's damage, reduced effectively hydraulic cylinder 1 interior let out, not pressurize the phenomenon, improved the security and the reliability of whole car.
The working principle is as follows:
in the process of extending a piston rod in the hydraulic oil cylinder 1, hydraulic oil enters a rodless cavity 2 of the hydraulic oil cylinder 1 from a first oil port 4 through a first filter 72 and a first check valve 6 which are connected with the first oil port in sequence, the hydraulic oil is filtered through the first filter 72, and the hydraulic oil is prevented from entering the rodless cavity 2 through an oil outlet branch by a second check valve 8; the hydraulic oil cylinder 1 enters the rodless cavity 2 to push the piston rod to extend out; the piston rod pushes the hydraulic oil in the rod cavity 3 to enter the first oil port 5 through the second filter 91 and the second check valve 8 which are connected with the piston rod, and the hydraulic oil flowing out of the rod cavity 3 is filtered through the second filter 91;
in the retraction process of a piston rod in the hydraulic oil cylinder 1, hydraulic oil enters a rod cavity 3 of the hydraulic oil cylinder 1 from a second oil port 5 through a first filter 72 and a first check valve 6 which are connected with the second oil port in sequence, the hydraulic oil is filtered through the first filter 72, and the hydraulic oil is prevented from entering the rod cavity 3 through an oil outlet branch through a second check valve 8; the hydraulic oil cylinder 1 enters the rod cavity 3 to push the piston rod to extend out; the piston rod pushes the hydraulic oil in the rodless cavity 2 to enter the second oil port 4 through the second filter 91 and the second check valve 8 which are connected with the piston rod, and the hydraulic oil flowing out of the rod cavity 3 is filtered through the second filter 91; the first spring type check valve 71 and the second spring type check valve 92 prevent the first filter 72 and the second filter 91 from being blocked to influence the normal operation of the hydraulic oil cylinder.
Example 2
On the other hand, the embodiment of the utility model provides a crawler crane is still provided, crawler crane's automobile body is last to be equipped with embodiment 1 in the two-way filter equipment of hydraulic cylinder.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described above, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. The bidirectional filtering device of the hydraulic oil cylinder is characterized by comprising the hydraulic oil cylinder (1), wherein a rodless cavity (2) and a rod cavity (3) are arranged on the hydraulic oil cylinder (1), the rodless cavity (2) is communicated with a first oil port (4) through an oil way, the rod cavity (3) is communicated with a second oil port (5) through an oil way, and a bidirectional filtering module is arranged on the oil way between the rodless cavity (2) and the first oil port (4) as well as between the rod cavity (3) and the second oil port (5);
the bidirectional filtering module comprises an oil inlet branch and an oil outlet branch; the oil inlet branch is sequentially provided with a first filtering component (7) and a first one-way valve (6) along the oil inlet direction; a second filtering component (9) and a second one-way valve (8) are sequentially arranged on the oil outlet branch along the oil outlet direction; the first one-way valve (6) and the second one-way valve (8) are arranged in opposite directions; an oil inlet of the first filtering assembly (7) and an oil outlet of the second one-way valve (8) are communicated to the first oil port (4) or the second oil port (5); an oil outlet of the first check valve (6) and an oil inlet of the second filtering component (9) are communicated to the rodless cavity (2) or the rod cavity (3).
2. A hydraulic cylinder bi-directional filtering device according to claim 1, characterized in that said first filtering assembly (7) comprises a first filter (72) and a first spring-loaded non-return valve (71); an oil inlet of the first filter (72) and an oil inlet of the first spring type check valve (71) are communicated to the first oil port (4) or the second oil port (5); an oil outlet of the first filter (72) and an oil outlet of the first spring type check valve (71) are communicated to an oil inlet of the first check valve (6); the first spring type check valve (71) and the first check valve (6) are arranged in the same direction.
3. A hydraulic cylinder bi-directional filtering arrangement according to claim 2, characterized in that the second filtering assembly (9) comprises a second filter (91) and a second spring-loaded non-return valve (92); an oil inlet of the second filter (91) and an oil inlet of the second spring type check valve (92) are communicated to the rodless cavity (2) or the rod cavity (3); an oil outlet of the second filter (91) and an oil outlet of the second spring type check valve (92) are communicated to an oil inlet of the second check valve (8); the second spring type check valve (92) and the second check valve (8) are arranged in the same direction.
4. A hydraulic cylinder bi-directional filtering arrangement according to claim 3, characterized in that the first filter (72) and the second filter (91) are high pressure filters with bypass relief valves with a filtering accuracy of 5u.
5. A hydraulic cylinder two-way filtering device according to claim 3, characterized in that said first spring-loaded non-return valve (71) and said second spring-loaded non-return valve (92) have a pressure of 5bar.
6. A crawler crane, characterized in that the body of the crawler crane is provided with a hydraulic oil cylinder bidirectional filter device as claimed in any one of claims 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222763296.5U CN218325600U (en) | 2022-10-20 | 2022-10-20 | Two-way filter equipment of hydraulic cylinder and crawler crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222763296.5U CN218325600U (en) | 2022-10-20 | 2022-10-20 | Two-way filter equipment of hydraulic cylinder and crawler crane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218325600U true CN218325600U (en) | 2023-01-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222763296.5U Active CN218325600U (en) | 2022-10-20 | 2022-10-20 | Two-way filter equipment of hydraulic cylinder and crawler crane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218325600U (en) |
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2022
- 2022-10-20 CN CN202222763296.5U patent/CN218325600U/en active Active
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