Test bed for testing hydraulic valve and oil cylinder of shield tunneling machine

Abstract

The utility model provides a shield tunneling machine hydraulic valve and oil cylinder test bench, which comprises a casing and a protective door, the casing is divided into a first cavity, a second cavity, a third cavity and a fourth cavity by partition plates, the protective door is slidably connected to the outside of the first cavity, and the protective door comprises an upper door plate and a front door plate which are vertically connected. The lower portion of the front door plate is in rolling fit with the first cavity through a first sliding mechanism, the upper portion of the front door plate is in sliding fit with the first cavity through a second sliding mechanism, and the rear portion of the upper door plate is in sliding connection with the first cavity through a third sliding mechanism. The shield tunneling machine hydraulic valve and oil cylinder test system is integrated into the test bed, installation, disassembly and transportation are convenient, safety protection is provided for testing, and space can be effectively saved through the design of the protective door. By adopting a triple sliding structure, stable guiding and accurate positioning can be provided for the protective door, the door is convenient to open and close, and the detection efficiency of components such as a hydraulic valve and an oil cylinder of a shield tunneling machine is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic valve testing, in particular to a shield machine hydraulic valve and oil cylinder testing bench. Background Art

[0002] The components in mechanical equipment are usually tested by using a general test system. Currently, there is no comprehensive test bench specifically for testing the hydraulic valves and cylinders of shield machines.

[0003] At present, the shield machine remanufacturing industry is booming. On the one hand, the service life of the shield machine is limited by the main bearing and cutterhead, and it needs to be restored and remanufactured after completing a project. The service life of the hydraulic components far exceeds this time, but in order to ensure that there will be no serious failures in subsequent use, it is necessary to test the various components of the system; on the other hand, for different tunnels, the requirements for the relevant parameters of the shield machine are also different, and the shield machine needs to be rebuilt and upgraded. The components on the old machine can be used, and they also need to be tested.

[0004] There are many types and specifications of hydraulic valves in shield machines, including directional control valves, flow control valves, pressure control valves, proportional valves, etc. The working flow covers the range of 10-200L / min, and the working pressure covers 0-35MPa. They are generally combined in the form of valve blocks, with many functions and large size. The detection of hydraulic valves in shield machines generally requires the completion of action tests and pressure holding tests. The oil cylinder in the shield machine needs to complete action tests and pressure resistance tests, and the pressure resistance needs to reach 42MPa.

[0005] According to the test method requirements of JB / T 10364-2014, JB / T 10365-2014, JB / T 10366-2014, JB / T 10367-2014, JB / T10368-2014, JB / T 10374-2013, GB / T 8107-2012, GB / T 15622-2005 and other standards, the test standards for hydraulic valves and hydraulic cylinders of shield machines are formed. The test items of various hydraulic valves and hydraulic cylinders in shield machines mainly include:

[0006] 1) Valve block overall test: directional valve action test; pressure valve pressure regulation test; flow control valve flow regulation test; pressure resistance test; balance valve, hydraulic lock pressure holding test; proportional multi-way valve group action and proportional flow characteristic test.

[0007] 2) Single-function valve test: pressure resistance of reversing valve, function of sliding valve, reversing performance, pressure loss, internal leakage, and sealing; pressure resistance of throttle valve, flow adjustment range, internal leakage, forward pressure loss, reverse pressure loss, external leakage, and sealing; pressure resistance of speed regulating valve, flow adjustment range and minimum control flow, internal leakage, influence of inlet pressure change on regulated flow, influence of outlet pressure change on regulated flow, reverse pressure loss, and sealing; pressure resistance of check valve, internal leakage, internal leakage of control piston, forward pressure loss, reverse pressure loss, opening pressure, control pressure characteristics, and sealing; pressure resistance of overflow valve, pressure regulation range and pressure stability, internal leakage, unloading pressure, pressure loss, steady-state pressure-flow characteristics, action reliability, and sealing; pressure reducing valve pressure resistance, pressure regulation range and pressure stability, pressure reducing stability, external leakage, reverse pressure loss, action reliability, and sealing.

[0008] 3) Cylinder test: starting pressure characteristics; pressure resistance test; internal leakage, external leakage; stroke inspection.

[0009] There are many types of valves on shield machines, most of which are in the form of valve blocks, with a wide range of flow and pressure. The valves need to be removed one by one and then tested on the corresponding test benches. The inspection workload is large, time-consuming and costly. At present, the commonly used test method is to run the test directly on the shield machine, which requires starting the entire machine system and can only perform functional tests on the valves, which is inconvenient and non-standard.

[0010] If the valve group is sent to an external testing agency for testing, it is usually only tested for movement and pressure resistance, which will leave hidden dangers for the operation of the shield machine. In addition, the outsourcing testing cycle is long and the cost is high.

[0011] Therefore, according to the characteristics of the shield machine hydraulic valve, a shield machine hydraulic valve test bench that meets national standards and has a high degree of automation is designed, which can greatly improve the detection efficiency and accuracy of shield machine remanufacturing components and reduce the cost of outsourcing component detection. Summary of the invention

[0012] The utility model aims to solve one of the technical problems in the related art at least to a certain extent. To this end, the utility model provides a shield machine hydraulic valve and cylinder test bench, which can greatly improve the detection efficiency of shield machine hydraulic valves, cylinders and other components.

[0013] The utility model embodiment proposes a shield machine hydraulic valve, oil cylinder test bench, including: a casing and a protective door, the casing is divided into a first cavity, a second cavity, a third cavity and a fourth cavity by a partition, the first cavity, the second cavity and the third cavity are adjacent and are all located in the upper layer of the casing, the fourth cavity is located in the lower layer of the casing, the first cavity is suitable for installing a measured element, the second cavity is suitable for installing a main oil tank, the third cavity is suitable for installing a control valve group, the fourth cavity is suitable for installing a pump group and an oil collecting tank, the upper end face of the first cavity has an upper opening, and the front end face of the first cavity has a front opening; the protective door is slidably connected to the outside of the first cavity, and the protective door is facing or away from the direction of the second cavity. Slide horizontally, when the protective door is fully opened, the protective door slides to the top of the second cavity, the protective door includes an upper door panel and a front door panel, the upper door panel and the front door panel are perpendicular to each other and fixedly connected, the size of the upper door panel is adapted to the size of the upper opening, and the size of the front door panel is adapted to the size of the front opening; the lower part of the front door panel and the first cavity are slidably or rolled together by a first sliding mechanism, the upper part of the front door panel and the first cavity are slidably or rolled together by a second sliding mechanism, the rear part of the upper door panel and the first cavity are slidably connected by a third sliding mechanism, wherein the third sliding mechanism is a three-section slide rail structure, and the length of the protective door and the length of the third sliding mechanism are equivalent to the length of the first cavity.

[0014] In some embodiments, the first sliding mechanism is a pulley and slide rail structure.

[0015] In some embodiments, the first sliding mechanism includes a first slide rail and a pulley, the pulley and the first slide rail are connected in a rolling fit, the first slide rail is fixedly connected to the lower side of the front casing outside the first cavity and the second cavity, the pulley is installed at the lower part of the front door panel, the pulley includes two end pulleys and a plurality of intermediate pulleys, the end pulleys are installed at both ends of the front door panel, and the intermediate pulleys are arranged between the two end pulleys.

[0016] In some embodiments, the second sliding mechanism is a slider rail structure.

[0017] In some embodiments, the second sliding mechanism includes a second sliding rail and a slider, the slider and the second sliding rail are slidingly connected, the second sliding rail is fixedly connected to the upper side of the front casing outside the first cavity and the second cavity, the slider is fixedly connected to the upper part of the front door panel, and there are several sliders.

[0018] In some embodiments, the third sliding mechanism includes a third sliding rail and a base, the third sliding rail and the base are slidably connected, the base is fixedly connected to the top casing outside the first cavity, and the third sliding rail is fixedly connected to the upper door panel.

[0019] In some embodiments, the front door panel is provided with an observation window for observing the interior of the first cavity.

[0020] In some embodiments, door suction devices are connected between the two sides of the protective door and the casing outside the first cavity.

[0021] In some embodiments, an oil pan is connected to the bottom of the first cavity.

[0022] In some embodiments, a handle is connected to the front door panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings.

[0024] in:

[0025] Figure 1 It is a structural schematic diagram of the hydraulic valve and cylinder test bench of the shield machine in the embodiment of the utility model in a fully closed state;

[0026] Figure 2 It is a structural schematic diagram of a hydraulic valve and cylinder test bench for a shield machine in an embodiment of the utility model in a fully open state;

[0027] Figure 3 for Figure 2 Schematic diagram of the structure of the protective door;

[0028] Figure 4 for Figure 3 Schematic diagram of the left viewing angle;

[0029] Figure 5 for Figure 3 A schematic diagram of an upward viewing angle (excluding the first slide rail and the second slide rail);

[0030] Reference numerals:

[0031] 1-upper door panel; 2-observation window; 3-front door panel; 4-handle; 5-third cavity; 6-second cavity; 7-fourth cavity; 8-second slide rail; 9-first slide rail; 10-base; 11-first cavity; 12-pulley; 13-slider; 14-third slide rail; 15-door stopper. DETAILED DESCRIPTION

[0032] The embodiments of the present invention are described in detail below, and the exemplary drawings of the embodiments are shown in the drawings. The embodiments described below with reference to the drawings are exemplary and intended to be used to explain the present invention, but cannot be understood as limiting the present invention.

[0033] The following describes a shield machine hydraulic valve and cylinder test bench according to an embodiment of the utility model with reference to the accompanying drawings.

[0034] like Figure 1-5As shown, the embodiment of the utility model proposes a shield machine hydraulic valve and cylinder test bench, including: a casing and a protective door, the casing is divided into a first cavity 11, a second cavity 6, a third cavity 5 and a fourth cavity 7 by a partition, the first cavity 11, the second cavity 6 and the third cavity 5 are adjacent and are all located in the upper layer of the casing, the fourth cavity 7 is located in the lower layer of the casing, the first cavity 11 is suitable for installing a measured component, the second cavity 6 is suitable for installing a main oil tank, the third cavity 5 is suitable for installing a control valve group, the fourth cavity 7 is suitable for installing a pump group and an oil collecting tank, the upper end face of the first cavity 11 has an upper opening, and the front end face of the first cavity 11 has a front opening; the protective door is slidably connected to the outside of the first cavity 11, and the protective door is facing or away from the second cavity 6. The protective door slides horizontally in the direction of rotation. When the protective door is fully opened, the protective door slides to the top of the second cavity 6. The protective door includes an upper door panel 1 and a front door panel 3. The upper door panel 1 and the front door panel 3 are perpendicular to each other and fixedly connected. The size of the upper door panel 1 matches the size of the upper opening, and the size of the front door panel 3 matches the size of the front opening. The lower part of the front door panel 3 slides or rolls with the first cavity 11 through a first sliding mechanism, and the upper part of the front door panel 3 slides or rolls with the first cavity 11 through a second sliding mechanism. The rear part of the upper door panel 1 is slidably connected to the first cavity 11 through a third sliding mechanism, wherein the third sliding mechanism is a three-section slide rail structure, and the length of the protective door and the length of the third sliding mechanism are equivalent to the length of the first cavity 11.

[0035] The embodiment of the utility model integrates the shield machine hydraulic valve and oil cylinder test system into a test bench by setting up a casing and dividing it into multiple cavities through partitions, which is convenient for installation, disassembly and transportation, and is convenient for testing the shield machine hydraulic valve and oil cylinder, providing safety protection for the test. By designing the protective door as a single-door structure, the area occupied by the protective door can be reduced when the test bench space is limited, effectively saving space. By adopting a triple sliding structure, the protective door can be provided with smooth guidance and precise positioning, and the door can be opened and closed conveniently, thereby improving the detection efficiency of the shield machine hydraulic valve, oil cylinder and other components.

[0036] The third sliding mechanism adopts a three-section slide rail mechanism, which reserves enough space for the vertical lifting of subsequent equipment and can also provide sufficient support for the protective door.

[0037] It should be noted that hooks are connected to the four sides of the casing. When the test bench needs to be lifted, a lifting device is usually used to connect the hooks for lifting. The main oil tank comes with a lifting ring for lifting the main oil tank alone. Since the top of the second cavity 6 has a cover body, when the main oil tank needs to be lifted alone, the cover body needs to be opened first, and the protective door is in a closed state at this time. The third sliding mechanism adopts a three-stage slide rail mechanism, and the base (i.e., the fixed part) of the third sliding mechanism will not extend above the cover body of the second cavity 6, which can facilitate the opening of the cover body at the top of the second cavity 6 and facilitate the lifting of the main oil tank. If the third sliding mechanism adopts a pulley slide rail structure or a slider slide rail structure, the slide rail needs to be extended to the top of the second cavity 6, which will hinder the opening of the cover body at the top of the second cavity 6. If a three-stage slide rail mechanism is adopted, there is no need to extend the slide rail to the top of the second cavity 6.

[0038] In some embodiments, the first sliding mechanism is a pulley 12 slide rail structure for bearing the weight of the protective door.

[0039] In some embodiments, the first sliding mechanism includes a first slide rail 9 and a pulley 12. The pulley 12 is connected to the first slide rail 9 in a rolling fit. The first slide rail 9 is fixedly connected to the lower side of the front casing outside the first cavity 11 and the second cavity 6. The pulley 12 is installed at the lower part of the front door panel 3. The pulley 12 includes two end pulleys and several intermediate pulleys. The end pulleys are installed at both ends of the front door panel 3, and the intermediate pulleys are arranged between the two end pulleys.

[0040] By adopting the connection mode of the pulley 12 and the slide rail, the mutual collision generated when opening and closing the door is reduced to the greatest extent. By arranging the end pulley, it is possible to avoid the protective door from generating a large deflection moment due to uneven force when opening and closing.

[0041] It should be noted that when the protective door is fully opened, all the intermediate pulleys are evenly distributed on the first slide rail 9, but are not evenly distributed on the front door panel 3. This allows only the outermost pulley to slide out of the first slide rail 9 when the protective door is opened, making the opening and closing of the protective door smoother.

[0042] Furthermore, the first slide rail 9 extends to the outside of the second cavity 6 .

[0043] In some embodiments, the second sliding mechanism is a slide rail structure of the slider 13. The second sliding mechanism cooperates with the three-section slide rail structure to provide stable guidance and precise positioning for the protective door.

[0044] In some embodiments, the second sliding mechanism includes a second slide rail 8 and a slider 13. The slider 13 is slidably connected to the second slide rail 8. The second slide rail 8 is fixedly connected to the upper side of the front casing outside the first cavity 11 and the second cavity 6. The slider 13 is fixedly connected to the upper part of the front door panel 3. There are several sliders 13.

[0045] By assembling the pulley 12 and the slider 13 on the same side of the protective door, after the door is opened, only one pulley at the end is disengaged from the first slide rail 9, and the other pulleys and sliders are on the corresponding slide rails. This can avoid frequent separation and engagement of the slider 13 and the second slide rail 8 during the opening and closing of the protective door, resulting in collision and damage.

[0046] Furthermore, when the protective door is open, the sliders 13 are evenly distributed on the second slide rail 8 .

[0047] In some embodiments, the third sliding mechanism includes a third slide rail 14 and a base 10, the third slide rail 14 and the base 10 are slidably connected, the base 10 is fixedly connected to the top housing outside the first cavity 11, and the third slide rail 14 is fixedly connected to the upper door panel 1.

[0048] In some embodiments, the front door panel 3 is provided with an observation window 2 for observing the interior of the first cavity 11. Under the premise of ensuring the safety of the experiment, the experimental process can be observed more conveniently without interfering with the progress of the experiment and can be monitored in real time.

[0049] Furthermore, the observation window 2 is arranged at the center of the front door panel 3. The first sliding mechanism is located below the observation window 2.

[0050] In some embodiments, door suction devices 15 are connected between the two sides of the protection door and the housing outside the first cavity 11, so that the protection door can be safely limited when opening and closing, ensuring the smoothness and smoothness of the pulley 12 and the slider 13 during the movement.

[0051] Furthermore, the door suction device 15 is connected between two sides of the upper door panel 1 and the casing outside the first cavity 11 .

[0052] In some embodiments, an oil pan is connected to the bottom of the first cavity 11 to collect the oil leaked when the measured component is disassembled and assembled for recycling.

[0053] In some embodiments, a handle 4 is connected to the front door panel 3 to facilitate the operator to open and close the protective door.

[0054] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0055] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0056] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0057] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0058] In the present utility model, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0059] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A test bench for testing hydraulic valves and cylinders of a shield machine, characterized in that: include: A casing, wherein the casing is divided into a first cavity, a second cavity, a third cavity and a fourth cavity by a partition, the first cavity, the second cavity and the third cavity are adjacent and are all located at the upper layer of the casing, the fourth cavity is located at the lower layer of the casing, the first cavity is suitable for installing a measured element, the second cavity is suitable for installing a main oil tank, the third cavity is suitable for installing a control valve group, the fourth cavity is suitable for installing a pump group and an oil collecting tank, the upper end surface of the first cavity has an upper opening, and the front end surface of the first cavity has a front opening; A protective door, the protective door is slidably connected to the outside of the first cavity, the protective door slides horizontally toward or away from the second cavity, and when the protective door is fully opened, the protective door slides to the top of the second cavity, the protective door includes an upper door panel and a front door panel, the upper door panel and the front door panel are perpendicular to each other and fixedly connected, the size of the upper door panel is adapted to the size of the upper opening, and the size of the front door panel is adapted to the size of the front opening; the lower part of the front door panel and the first cavity are slidably or rolled together by a first sliding mechanism, the upper part of the front door panel and the first cavity are slidably or rolled together by a second sliding mechanism, and the rear part of the upper door panel and the first cavity are slidably connected by a third sliding mechanism, wherein the third sliding mechanism is a three-section slide rail structure, and the length of the protective door and the length of the third sliding mechanism are equivalent to the length of the first cavity.

2. The shield machine hydraulic valve and cylinder test bench according to claim 1 is characterized in that: The first sliding mechanism is a pulley and slide rail structure.

3. The shield machine hydraulic valve and cylinder test bench according to claim 2 is characterized in that: The first sliding mechanism includes a first slide rail and a pulley, the pulley and the first slide rail are connected in a rolling manner, the first slide rail is fixedly connected to the lower side of the front casing outside the first cavity and the second cavity, the pulley is installed at the lower part of the front door panel, the pulley includes two end pulleys and a plurality of intermediate pulleys, the end pulleys are installed at both ends of the front door panel, and the intermediate pulley is arranged between the two end pulleys.

4. The shield machine hydraulic valve and cylinder test bench according to claim 1 is characterized in that: The second sliding mechanism is a slider and rail structure.

5. The shield machine hydraulic valve and cylinder test bench according to claim 4 is characterized in that: The second sliding mechanism includes a second sliding rail and a slider, the slider and the second sliding rail are slidably connected, the second sliding rail is fixedly connected to the upper side of the front casing outside the first cavity and the second cavity, the slider is fixedly connected to the upper part of the front door panel, and there are several sliders.

6. The shield machine hydraulic valve and cylinder test bench according to claim 1, characterized in that: The third sliding mechanism includes a third sliding rail and a base, the third sliding rail and the base are slidably connected, the base is fixedly connected to the top casing outside the first cavity, and the third sliding rail is fixedly connected to the upper door panel.

7. The shield machine hydraulic valve and cylinder test bench according to claim 1, characterized in that: The front door panel is provided with an observation window for observing the interior of the first cavity.

8. The shield machine hydraulic valve and cylinder test bench according to claim 1, characterized in that: Door suction devices are respectively connected between the two sides of the protective door and the casing outside the first cavity.

9. The shield machine hydraulic valve and cylinder test bench according to claim 1, characterized in that: The bottom of the first cavity is connected to an oil receiving pan.

10. The shield machine hydraulic valve and cylinder test bench according to claim 1, characterized in that: A handle is connected to the front door panel.

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