Hydraulic system compensation device based on rack deformation

Abstract

The utility model provides a hydraulic system compensation device based on frame deformation, which comprises a liquid filling tank, an oil press, a pipeline I, a pipeline II and a compensation device, the liquid filling tank is connected with an oil inlet of the pipeline I, an oil outlet of the pipeline I is connected with an oil inlet of the pipeline II through the compensation device, and an oil outlet of the pipeline is connected with the oil press; the first pipeline and the second pipeline are both connected with an oil press rack. The hydraulic system compensation device based on the rack deformation is used for connecting a low-pressure pipeline of a large oil press, replaces traditional low-pressure flange connection, compensates deformation generated by a liquid filling pipeline when the rack of the oil press is deformed through axial reciprocating motion of the telescopic cylinder, prevents a connecting flange from being separated due to deformation of the liquid filling pipeline, and improves the working efficiency of the oil press. And oil is saved, the production cost is reduced, sufficient flow of a liquid filling pipeline is ensured, the pressing machine can continuously and stably operate, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of oil press deformation compensation, in particular to a hydraulic system compensation device based on frame deformation. Background Art

[0002] Generally, after the installation of the hydraulic press, a special hydraulic pre-tightening device is used to pre-tighten the main frame of the hydraulic press, so that the upper crossbeam, column, tie rod and lower crossbeam form a closed load-bearing frame. All the nominal pressure generated by the hydraulic press when working is borne by this frame. The hydraulic press will produce a certain amount of deformation due to the load-bearing frame. The hydraulic press filling tank is generally placed in a pit. The filling tank located above the hydraulic press needs to be filled with liquid. Therefore, the filling pipeline needs to be arranged upward along the frame of the hydraulic press. However, when the hydraulic press is working, the frame will produce elastic deformation, causing the filling pipeline to deform with the press.

[0003] Generally, the filling pipeline is connected by flanges. When the filling pipeline is deformed and stretched with the hydraulic press, the flange interface will become loose, resulting in oil leakage. In addition, the nominal pressure of large hydraulic presses is relatively high, the filling flow rate required by the working cylinder is also large, the filling pipeline diameter is relatively large, and the rigidity of large pipelines is also relatively large. When deformation occurs, it is more likely to be damaged and leaked, which not only affects the stable operation of the press, but also increases production costs. Utility Model Content

[0004] In order to solve the problems existing in the prior art, the utility model aims to propose a hydraulic system compensation device based on frame deformation, which can replace the flange connection of the low-pressure pipeline and compensate for the deformation of the hydraulic press frame during operation, thereby avoiding loosening and oil leakage of the liquid-filled pipeline due to deformation.

[0005] In order to achieve the above object, the technical solution of the utility model is implemented as follows:

[0006] A hydraulic system compensation device based on frame deformation, comprising a liquid filling tank, a hydraulic press, a first pipeline, a second pipeline and a compensation device, wherein the liquid filling tank is connected to the oil inlet of the first pipeline, the oil outlet of the first pipeline is connected to the oil inlet of the second pipeline through the compensation device, and the oil outlet of the second pipeline is connected to the hydraulic press; the first pipeline and the second pipeline are both installed on the hydraulic press frame;

[0007] The compensation device includes a connecting flange 1, a telescopic cylinder, an outer cylinder, a sealing sleeve, a guide sleeve and a connecting flange 2. The fixed end of the telescopic cylinder is connected to the oil outlet of pipeline 1 through the connecting flange 1; the telescopic end of the telescopic cylinder is located in the outer cylinder, and a guide sleeve is provided between the outer cylinder and the telescopic cylinder. The end of the guide sleeve close to the connecting flange 1 is limited by a sealing sleeve which is sleeved on the telescopic cylinder and fixed to the end face of the telescopic end of the outer cylinder, and the end of the guide sleeve away from the connecting flange 1 is limited by a protrusion on the inner surface of the outer cylinder, so that the telescopic cylinder can move axially in the outer cylinder along the guide sleeve to compensate for the deformation of the liquid filling pipeline when the frame of the hydraulic press is deformed; the fixed end of the outer cylinder is connected to pipeline 2 through the connecting flange 2.

[0008] Furthermore, the axis of the telescopic cylinder and the axis of the outer cylinder are located on the same axis. Furthermore, the connecting flange 1 is welded to the pipeline 1.

[0009] Furthermore, the connecting flange 1 is connected to the telescopic tube bolts.

[0010] Furthermore, a double guide belt is provided in the sealing sleeve.

[0011] Furthermore, the ratio of the length of the guide sleeve to its diameter is 0.5 to 0.6.

[0012] Furthermore, the second connecting flange is bolted to the outer tube.

[0013] Furthermore, the second connecting flange is welded to the second pipeline.

[0014] Furthermore, the oil hydraulic press is located above the liquid filling tank.

[0015] Compared with the prior art, the hydraulic system compensation device based on frame deformation described in the utility model has the following advantages:

[0016] The hydraulic system compensation device based on frame deformation described in the utility model is used for connecting the low-pressure pipeline of a large oil hydraulic machine, replacing the traditional low-pressure flange connection, and has a simple structure, convenient disassembly and maintenance, and convenient replacement of seals, thereby reducing the difficulty of maintenance and repair;

[0017] The axial reciprocating motion of the telescopic cylinder is used to compensate for the deformation of the hydraulic press frame and the deformation of the filling pipeline, so as to avoid the connection flange of the filling pipeline being detached due to deformation, resulting in loosening and oil leakage, thereby saving oil, reducing production costs, ensuring sufficient flow in the filling pipeline, and ensuring that the press can operate continuously and stably, thereby improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:

[0019] Figure 1 The overall structural diagram provided for the embodiment of the utility model;

[0020] Figure 2 for Figure 1 Middle A is a partial enlarged view;

[0021] Figure 3 This is a cross-sectional view of the compensation device;

[0022] Figure 4 for Figure 3 A partial enlarged view of B.

[0023] Description of reference numerals:

[0024] 1. Hydraulic press; 2. Pipeline 1; 3. Pipeline 2; 4. Compensating device; 41. Connecting flange 1; 42. Telescopic cylinder; 43. Outer cylinder; 44. Sealing sleeve; 45. Guide sleeve; 46. Connecting flange 2. DETAILED DESCRIPTION

[0025] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0026] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0027] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0028] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0029] like Figures 1 to 4 As shown, a hydraulic system compensation device based on frame deformation includes a liquid filling tank, an oil press 1, a pipeline 1 2, a pipeline 2 3 and a compensation device 4, wherein the liquid filling tank is connected to the oil inlet of the pipeline 1 2, the oil outlet of the pipeline 1 2 is connected to the oil inlet of the pipeline 2 3 through the compensation device 4, and the oil outlet of the pipeline 2 3 is connected to the oil press 1; the pipeline 1 2 and the pipeline 2 3 are both installed on the frame of the oil press 1;

[0030] The compensation device 4 includes a connecting flange 41, a telescopic cylinder 42, an outer cylinder 43, a sealing sleeve 44, a guide sleeve 45 and a connecting flange 46. The fixed end of the telescopic cylinder 42 is connected to the oil outlet of the pipeline 2 through the connecting flange 41; the telescopic end of the telescopic cylinder 42 is located in the outer cylinder 43, and a guide sleeve 45 is provided between the outer cylinder 43 and the telescopic cylinder 42. The end of the guide sleeve 45 close to the connecting flange 41 is limited by a sealing sleeve 44 which is sleeved on the telescopic cylinder 42 and fixed to the end face of the telescopic end of the outer cylinder 43. The end of the guide sleeve 45 away from the connecting flange 41 is limited by a protrusion on the inner surface of the outer cylinder 43, so that the telescopic cylinder 42 can move axially in the outer cylinder 43 along the guide sleeve 45 to compensate for the deformation of the pipeline when the frame of the hydraulic press 1 is deformed; the fixed end of the outer cylinder 43 is connected to the pipeline 23 through the connecting flange 246.

[0031] The hydraulic system compensation device based on frame deformation described in the utility model is used for the connection of low-pressure pipelines of large oil hydraulic presses, replacing the traditional low-pressure flange connection, and the axial reciprocating motion of the telescopic cylinder is used to compensate for the deformation of the pipeline when the frame of the oil hydraulic press is deformed, thereby avoiding the loosening and oil leakage caused by the connection flange being disengaged due to the deformation of the pipeline, saving oil, reducing production costs, ensuring sufficient flow of the liquid-filled pipeline, and the continuous and stable operation of the press, thereby improving production efficiency;

[0032] The guide sleeve 45 provides guidance for the telescopic cylinder 42 when it moves axially inside the outer cylinder 43, ensuring that the telescopic cylinder 42 moves axially to effectively compensate for the deformation of the pipeline when the hydraulic press frame is deformed, maintain the stability of the system, and avoid loosening and oil leakage of the pipeline.

[0033] In a preferred embodiment of the present invention, a double guide belt is provided in the sealing sleeve 44 .

[0034] The ratio of the length of the guide sleeve 45 to its diameter is 0.5 to 0.6.

[0035] In actual use, the guide sleeve 45 is a long guide, and its length to diameter ratio is preferably 0.55, which can ensure that the telescopic cylinder 42 and the outer cylinder 43 do not produce unbalanced loads, making the seal in the sealing sleeve 44 not easily damaged, thereby extending the service life of the sealing sleeve.

[0036] In a preferred embodiment of the present invention, the axis of the telescopic cylinder 42 and the axis of the outer cylinder 43 are located on the same axis.

[0037] In actual use, when the frame is deformed during operation of the hydraulic press, pipeline 1 2 and pipeline 2 3 will be extended or compressed along with the hydraulic press, and the telescopic cylinder 42 moves axially in the outer cylinder 43 to compensate for the deformation of the frame during operation, thereby preventing pipeline 1 2 and pipeline 2 3 from loosening and leaking oil due to deformation.

[0038] In a preferred embodiment of the present invention, the connecting flange 41 is welded to the pipeline 2.

[0039] The connecting flange 1 41 is connected to the telescopic cylinder 42 by bolts.

[0040] In actual use, the connection flange 41 is welded with the pipeline 2 to ensure a stable and sealed connection, thereby avoiding leakage problems in the hydraulic pipeline. The connection flange 41 is bolted with the telescopic cylinder 42, which can be easily disassembled and replaced, thereby reducing the difficulty of maintenance and repair.

[0041] In a preferred embodiment of the present invention, the second connecting flange 46 is connected to the outer cylinder 43 by bolts.

[0042] In a preferred embodiment of the present invention, the second connecting flange 46 is welded to the second pipeline 3.

[0043] In actual use, the sealing specifications of flange 1 41 and flange 2 46 are consistent, which reduces the selection of seals and the types of seal spare parts.

[0044] The connection flange 2 46 is welded with the pipeline 2 3 to ensure a stable connection and a seal, thereby avoiding leakage problems in the hydraulic pipeline. The connection flange 2 46 is bolted with the outer cylinder 43, which can be easily disassembled and replaced, thereby reducing the difficulty of maintenance and repair.

[0045] Working principle of hydraulic system compensation device based on frame deformation:

[0046] When the frame is deformed during operation of the hydraulic press, the oil flows upward from the filling tank through pipeline 1 2, compensation device 4, pipeline 2 3 in sequence into the hydraulic press. Pipeline 1 2 and pipeline 2 3 will be extended or compressed along with the hydraulic press, and the telescopic cylinder 42 moves axially along the guide sleeve 45 in the outer cylinder 43 to compensate for the deformation of the frame during operation and avoid loosening and oil leakage of pipeline 1 2 and pipeline 2 3 due to deformation.

[0047] In a preferred embodiment of the present utility model, the hydraulic press 1 is located above the liquid filling tank.

[0048] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A hydraulic system compensation device based on frame deformation, characterized in that: The invention comprises a liquid filling tank, an oil press (1), a pipeline 1 (2), a pipeline 2 (3) and a compensation device (4), wherein the liquid filling tank is connected to the oil inlet of the pipeline 1 (2), the oil outlet of the pipeline 1 (2) is connected to the oil inlet of the pipeline 2 (3) through the compensation device (4), and the oil outlet of the pipeline 2 (3) is connected to the oil press (1); the pipeline 1 (2) and the pipeline 2 (3) are both installed on the frame of the oil press (1); The compensation device (4) comprises a connecting flange 1 (41), a telescopic cylinder (42), an outer cylinder (43), a sealing sleeve (44), a guide sleeve (45) and a connecting flange 2 (46). The fixed end of the telescopic cylinder (42) is connected to the pipeline 1 (2) via the connecting flange 1 (41). The telescopic end of the telescopic cylinder (42) is located inside the outer cylinder (43). A guide sleeve (45) is provided between the outer cylinder (43) and the telescopic cylinder (42). The guide sleeve (45) is close to the connecting flange 1 (41). ) is limited by a sealing sleeve (44) which is sleeved on the telescopic cylinder (42) and fixed to the telescopic end face of the outer cylinder (43); the end of the guide sleeve (45) away from the connecting flange one (41) is limited by a protrusion on the inner surface of the outer cylinder (43), so that the telescopic cylinder (42) can move axially along the guide sleeve (45) in the outer cylinder (43), thereby compensating for the deformation of the pipeline when the frame of the hydraulic press (1) is deformed; the fixed end of the outer cylinder (43) is connected to the pipeline two (3) through the connecting flange two (46).

2. The hydraulic system compensation device based on frame deformation according to claim 1, characterized in that: The axis of the telescopic cylinder (42) and the axis of the outer cylinder (43) are located on the same axis.

3. The hydraulic system compensation device based on frame deformation according to claim 1, characterized in that: The connecting flange 1 (41) is welded to the pipeline 1 (2).

4. The hydraulic system compensation device based on frame deformation according to claim 1, characterized in that: The connecting flange 1 (41) is bolted to the telescopic cylinder (42).

5. The hydraulic system compensation device based on frame deformation according to claim 1, characterized in that: The sealing sleeve (44) is provided with double guide belts.

6. The hydraulic system compensation device based on frame deformation according to claim 1, characterized in that: The ratio of the length of the guide sleeve (45) to its diameter is 0.5 to 0.

6.

7. The hydraulic system compensation device based on frame deformation according to claim 1, characterized in that: The second connecting flange (46) is connected to the outer cylinder (43) by bolts.

8. The hydraulic system compensation device based on frame deformation according to claim 1, characterized in that: The second connecting flange (46) is welded to the second pipeline (3).

9. The hydraulic system compensation device based on frame deformation according to claim 1, characterized in that: The oil press (1) is located above the liquid filling tank.

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