Oil pressure testing machine with oil amount observation window

Abstract

This utility model relates to the technical field of hydraulic pressure testing machines, specifically a hydraulic pressure testing machine with an oil level observation window. It includes a machine body, an oil tank fixedly installed inside the machine body, and an oil level observation box fixedly installed on the machine body shell opposite the oil tank. The inner cavity of the oil level observation box and the inner cavity of the oil tank are connected by an oil guide pipe. This utility model, by setting the oil level observation box on the side wall of the machine body and using the oil guide pipe to connect the oil tank and the observation box, ensures that the liquid level in the observation box is always consistent with the liquid level in the oil tank. This allows users to quickly understand the oil level in the tank and avoids the impact on the strength of the oil tank side wall if the observation window is directly placed on the oil tank.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic testing machine technology, specifically to a hydraulic testing machine with an oil volume observation window. Background Technology

[0002] A hydraulic pressure testing machine is a device used to perform pressure tests on gearboxes or hydraulic components. It can simulate the hydraulic pressure environment in actual operation, detect the performance of the tested object under different hydraulic pressures, and provide important basis for quality control and fault diagnosis of gearboxes.

[0003] In existing technology, hydraulic pressure testing machines typically consist of an oil tank, an oil pump, an oil pressure gauge, a testing fixture, and connecting pipelines. During use, an appropriate amount of oil is first added to the oil tank, then the oil is pressurized by the oil pump and transported to the gearbox mounted on the testing fixture via the connecting pipelines. The pressure gauge monitors the pressure values ​​in real time during the test. After the test is completed, the pressure is released through relevant valves, and the gearbox is removed.

[0004] However, during the use of a hydraulic pressure testing machine, to ensure the accuracy of the test and the normal operation of the equipment, it is necessary to ensure that the oil level in the tank is sufficient to cover the fixture inside the tank. Too much oil may cause it to overflow during pressurization, resulting in waste and contamination; too little oil will also cause insufficient oil pump suction, affecting the stable output of the test pressure and even damaging components such as the pump. Existing hydraulic pressure testing machines lack convenient and intuitive means of observing the oil level, making it difficult for operators to quickly determine whether the oil level in the tank meets the requirements, causing inconvenience during use. Therefore, this utility model proposes a hydraulic pressure testing machine with an oil level observation window to effectively solve the above-mentioned drawbacks. Utility Model Content

[0005] The purpose of this invention is to provide an oil pressure testing machine with an oil level observation window to solve the problems mentioned in the background art.

[0006] This utility model is achieved through the following technical solution: an oil pressure testing machine with an oil level observation window, comprising a machine body, an oil tank fixedly disposed inside the machine body, and an oil level observation box fixedly disposed on the shell of the machine body opposite the oil tank, wherein the inner cavity of the oil level observation box and the inner cavity of the oil tank are connected by an oil guide pipe.

[0007] Optionally, the oil level observation box has a cuboid structure, and the front side wall of the machine body has an observation port for the oil level observation box to be detachably embedded. The front side wall of the machine body protrudes into the inner cavity of the machine body at the observation port to form a mounting frame. The outer side of the oil level observation box has a flange, which is used to abut against the mounting frame and is fixedly connected to the mounting frame by screws.

[0008] Optionally, the two ends of the oil guide pipe are located near the bottom of the oil tank and the oil level observation box, respectively. The oil tank and the oil level observation box are connected to a common exhaust pipe near the top, and the exhaust pipe connects the inner cavity of the oil tank and the inner cavity of the oil level observation box.

[0009] Optionally, the oil level observation box may be made of a transparent material, at least on the outer side of the box.

[0010] Optionally, the inner cavity of the oil level observation box has a structure that is narrow at the top and wide at the bottom.

[0011] Optionally, a dustproof plate is movably provided on one side of the left or right sidewall of the observation port. One side of the dustproof plate is slidably connected to the inside of the front sidewall of the machine body along the width direction of the machine body, and the other side of the dustproof plate is located inside the observation port and has scale lines along the height direction of the machine body. The dustproof plate can completely cover the front side of the oil level observation box.

[0012] Compared with the prior art, this utility model provides an oil pressure testing machine with an oil level observation window, which has the following advantages:

[0013] 1. This utility model provides an oil level observation box by setting it on the side wall of the machine body and connecting the oil tank and the observation box with an oil guide pipe, so that the liquid level in the observation box can always be consistent with the liquid level in the oil tank. This makes it easy for users to quickly understand the oil level in the oil tank and avoids the impact of setting an observation window directly on the oil tank on the strength of the oil tank side wall.

[0014] 2. This utility model features a sliding dustproof plate on the side wall of the device. When not in use, the dustproof plate can cover the oil level observation box, protecting it from dust. At the same time, scale lines are provided on the side of the dustproof plate, allowing users to observe the liquid level height after the dustproof plate is opened, thus quickly understanding the amount of oil in the tank and facilitating the user's judgment on whether the oil level is appropriate. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the rear view structure of this utility model;

[0017] Figure 3 This is a top sectional view of the present invention;

[0018] Figure 4 This is a schematic diagram of the oil level observation box and dustproof plate of this utility model;

[0019] Figure 5 This is a side sectional view of the oil level observation box of this utility model;

[0020] Figure 6 for Figure 3 Enlarged structural diagram at point A in the middle.

[0021] In the diagram: 1. Body; 101. Oil tank; 102. Observation port; 103. Mounting frame; 104. Maintenance door; 2. Oil level observation box; 201. Flange; 3. Oil guide pipe; 301. Exhaust pipe; 4. Dustproof plate; 401. Scale line. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1 - Figure 6 A hydraulic pressure testing machine with an oil level observation window includes a body 1, an oil tank 101 fixedly installed inside the body 1, and an oil level observation box 2 fixedly installed on the shell of the body 1 opposite the oil tank 101. The inner cavity of the oil level observation box 2 and the inner cavity of the oil tank 101 are connected by an oil guide pipe 3, and the liquid level in the oil level observation box 2 is always consistent with the liquid level in the oil tank 101. By utilizing the principle of communicating vessels, the liquid levels in the oil tank 101 and the oil level observation box 2 are always the same, allowing the user to determine the amount of oil in the oil tank 101 by observing the liquid level in the oil level observation box 2. By not directly installing an observation window on the oil tank 101, the structural strength of the side wall of the oil tank 101 is avoided.

[0024] The oil tank 101 has a top-opening structure to allow oil to be injected into it. The oil tank 101 is detachably mounted to the bottom of the inner cavity of the machine body 1 using bolts and other connecting parts. An oil pipe is connected to the oil tank 101, with its ends located on the side wall of the machine body 1 for connection to external oil pipe connectors. The two ends of the oil guide pipe 3 are located near the bottom of the oil tank 101 and the oil level observation box 2, respectively, so that after oil is injected into the oil tank 101, it can simultaneously enter the oil level observation box 2 through the oil guide pipe 3.

[0025] On the other hand, the fuel level observation box 2 has an internally hollow and closed structure. In order to allow the air in the inner cavity of the fuel level observation box 2 to be discharged after the fuel enters the box, in this application, the fuel tank 101 and the fuel level observation box 2 are connected to a common exhaust pipe 301 near the top. The exhaust pipe 301 connects the inner cavity of the fuel tank 101 and the inner cavity of the fuel level observation box 2. Since the top of the fuel tank 101 has an open structure, when the fuel level in the fuel level observation box 2 gradually increases, the air in the inner cavity of the fuel level observation box 2 will be discharged from the exhaust pipe 301 into the fuel tank 101, and finally discharged from the top opening of the fuel tank 101.

[0026] In this embodiment, a maintenance door 104 is connected to the rear hinge of the body 1. The user can open the maintenance door 104 to maintain the oil tank 101 and other components inside the body 1. At the same time, it is also convenient for the user to install the oil level observation box 2.

[0027] Specifically, the fuel level observation box 2 has a cuboid structure. The front side wall of the body 1 has a detachable observation port 102 for the fuel level observation box 2. A mounting frame 103 protrudes from the front side wall of the body 1 directly opposite the observation port 102, forming the inner cavity of the body 1. The outer side of the fuel level observation box 2 has a flange 201, which abuts against the mounting frame 103 and is fixedly connected to the mounting frame 103 with screws. This allows the fuel level observation box 2 to be detachably connected to the side wall of the body 1, facilitating user disassembly for maintenance or replacement.

[0028] The mounting frame 103 is a rectangular frame, and the oil level observation box 2 can be slidably embedded into the inner side of the mounting frame 103. The flange 201 abuts against the side of the mounting frame 103, and both the flange 201 and the mounting frame 103 are provided with several threaded holes. The threaded holes on the flange 201 and the threaded holes on the mounting frame 103 correspond one-to-one so that screws can be inserted to achieve the fixed installation of the oil level observation box 2.

[0029] Furthermore, the oil level observation box 2 has at least one wall facing the outside of the main body 1 made of transparent material. This allows the user to observe the oil level in the oil level observation box 2 from the outside of the main body 1, thereby quickly determining whether the oil level in the oil tank 101 is appropriate. The oil level observation box 2 is made of acrylic or borosilicate glass to ensure its transparency and strength, facilitating user observation of the oil level.

[0030] It is worth mentioning that the inner cavity of the oil level observation box 2 has a structure that is narrow at the top and wide at the bottom, such as... Figure 5 As shown, this structure allows the front and rear inner walls of the oil level observation box 2 to be inclined, making it difficult for the oil in the oil level observation box 2 to adhere to the inner wall, reducing the occurrence of wall hanging phenomenon, and making the user's observation of the liquid level more accurate.

[0031] Furthermore, a dustproof plate 4 is movably provided on one side of the left or right sidewall of the observation port 102. One side of the dustproof plate 4 is slidably connected to the inside of the front sidewall of the body 1 along the width direction of the body 1, and the other side of the dustproof plate 4 is located inside the observation port 102 and has a scale line 401 along the height direction of the body 1. The dustproof plate 4 can completely cover the front side of the oil level observation box 2. This allows the dustproof plate 4 to cover the front side of the oil level observation box 2 when the body 1 is not in use, thereby protecting the oil level observation box 2 from dust and avoiding affecting the accuracy of the user's observation of the liquid level.

[0032] The dustproof plate 4 has a rectangular plate structure, and the length and width of the dustproof plate 4 are not less than the length and width of the front side of the oil level observation box 2. The dustproof plate 4 is always located on the inner wall of the machine body 1 and cannot slide into the observation port 102 to avoid the dustproof plate 4 falling off.

[0033] On the other hand, the side of the dust cover 4 located inside the observation port 102 can slide to a state of being flush with the side wall of the observation port 102. The dust cover 4 can be fixed to the side wall of the observation port 102 by magnetic attraction or other means, improving stability. The scale line 401 is set on the side of the dust cover 4 that is flush with the side wall of the observation port 102, so that when the dust cover 4 covers the front side of the oil level observation box 2, the scale line 401 is blocked and prevented from being scratched; when the dust cover 4 is opened, the scale line 401 can be exposed, allowing the user to quickly observe the liquid level in the oil level observation box 2, thereby understanding the amount of oil in the oil tank 101.

[0034] The working principle and usage process of this utility model are as follows: First, connect the quick connector of the oil pipe to the interface on the machine body 1, and add enough clean automatic transmission oil to the oil tank 101. It is generally recommended to add enough to cover the tool inside the oil tank 101, about 10L. Then, connect the power supply, with a voltage of AC 220V. Next, pull the switch on the side of the machine body 1 upwards. Open the valve on the delivery pipe to release the air in the pipe until the discharged oil is free of air bubbles.

[0035] Finally, connect the quick connector of the machine body 1 to the leak test plate connector installed on the automatic transmission housing; input the fixed output pressure for testing, and after reaching the fixed pressure, observe the pressure difference value on the screen. The pressure difference is normal if it does not exceed ±50 kPa, and the test is completed.

[0036] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A hydraulic pressure testing machine with an oil level observation window, comprising a body (1), wherein an oil tank (101) is fixedly disposed inside the body (1), characterized in that: An oil level observation box (2) is fixedly provided on the shell of the machine body (1) opposite the oil tank (101). The inner cavity of the oil level observation box (2) and the inner cavity of the oil tank (101) are connected by an oil guide pipe (3).

2. The oil pressure testing machine with an oil level observation window according to claim 1, characterized in that: The oil level observation box (2) has a cuboid structure. The front side wall of the body (1) is provided with an observation port (102) into which the oil level observation box (2) can be detachably embedded. The front side wall of the body (1) protrudes into the inner cavity of the body (1) at the observation port (102) to form a mounting frame (103). The outer side of the oil level observation box (2) has a flange (201). The flange (201) is used to abut against the mounting frame (103) and is fixedly connected to the mounting frame (103) by screws.

3. The oil pressure testing machine with an oil level observation window according to claim 2, characterized in that: The two ends of the oil guide pipe (3) are located near the bottom of the oil tank (101) and the oil level observation box (2), respectively. The oil tank (101) and the oil level observation box (2) are connected to an exhaust pipe (301) near the top. The exhaust pipe (301) connects the inner cavity of the oil tank (101) and the inner cavity of the oil level observation box (2).

4. The oil pressure testing machine with an oil level observation window according to claim 1, characterized in that: The oil level observation box (2) has at least one wall facing the outside of the body (1) made of transparent material.

5. The oil pressure testing machine with an oil level observation window according to claim 4, characterized in that: The inner cavity of the oil level observation box (2) has a structure that is narrow at the top and wide at the bottom.

6. A hydraulic pressure testing machine with an oil level observation window according to claim 2 or 3, characterized in that: A dustproof plate (4) is movably provided on one side of the left and right sidewalls of the observation port (102). One side of the dustproof plate (4) is slidably connected to the inside of the front sidewall of the body (1) along the width direction of the body (1). The other side of the dustproof plate (4) is located inside the observation port (102) and has a scale line (401) along the height direction of the body (1). The dustproof plate (4) can completely cover the front side of the oil level observation box (2).

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