A constant-temperature hydraulic test bench

Abstract

This utility model discloses a constant temperature hydraulic test bench, including a workbench, a constant temperature chamber, a drive motor, a hydraulic pump, an oil tank, a constant temperature bath rod, and a sealing joint. The constant temperature chamber is movably connected to the bottom of the workbench, and the drive motor and hydraulic pump are fixedly installed on the top of the workbench. The drive motor is connected to the hydraulic pump. This constant temperature hydraulic test bench, through its installation mechanism, allows for easy disassembly and maintenance of the constant temperature bath rod. A hydraulic cylinder raises the workbench to a suitable height, moving the bath rod outside the chamber. Then, rotating the handle forward rotates the lead screw, which moves the threaded plate to the right. The threaded plate disengages the locking rod from its slot. Pulling the mounting base forward disengages the fixing block from its groove, allowing the mounting base and the constant temperature bath rod to be removed. This method is convenient, quick, time-saving, and labor-saving, facilitating the maintenance or replacement of the constant temperature bath rod.

Description

Technical Field

[0001] This utility model relates to the technical field of constant temperature hydraulic test benches, specifically a constant temperature hydraulic test bench. Background Technology

[0002] Hydraulic test benches play a crucial role in the performance testing of hydraulic components, and are commonly used to perform performance tests on various hydraulic components such as hydraulic pumps, hydraulic motors, hydraulic valves, and hydraulic cylinders. Among the many factors affecting hydraulic test results, temperature is an extremely critical factor. Tests on some hydraulic components must be conducted in a constant temperature environment to ensure the accuracy and reliability of the test data.

[0003] A patent with publication number CN113187779A discloses a constant-temperature hydraulic test bench, including a workbench with a drive motor above it. The drive motor is connected to a hydraulic pump, which is connected to an oil tank via a hydraulic circuit. The hydraulic circuit contains several directional valves, throttle valves, and relief valves. The end of the hydraulic circuit passes through the workbench housing and is located in a constant-temperature chamber below the workbench. A sealing joint is provided at the end of the hydraulic circuit, and the component under test is connected to the hydraulic circuit through the sealing joint. However, in practical use, the above patent has the following drawbacks: when the constant-temperature water bath rod malfunctions, the user needs to spend a lot of time and effort to disassemble and repair it, seriously affecting repair efficiency and increasing equipment maintenance costs. Therefore, we propose a constant-temperature hydraulic test bench. Utility Model Content

[0004] The purpose of this invention is to provide a constant temperature hydraulic test bench to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a constant temperature hydraulic test bench, comprising a workbench, a constant temperature chamber, a drive motor, a hydraulic pump, an oil tank, a constant temperature bath rod, and a sealing joint. The constant temperature chamber is movably connected to the bottom of the workbench, and the drive motor and the hydraulic pump are fixedly installed on the top of the workbench. The drive motor is connected to the hydraulic pump, and the hydraulic pump is connected to the oil tank through a hydraulic oil circuit. A mounting base is movably connected to the bottom of the workbench, and a constant temperature bath rod is fixedly connected to the bottom of the mounting base. The mounting base and the workbench are connected by a mounting mechanism.

[0006] Furthermore, the hydraulic circuit is equipped with several directional valves, throttle valves, and relief valves. The two ends of the hydraulic circuit pass through the workbench and extend into the constant temperature chamber. The ends of the hydraulic circuit are equipped with detachable sealing joints. During the test, the inlet and outlet pipes of the component under test are connected to the hydraulic circuit through the sealing joints. The top of the constant temperature chamber is open. A constant temperature controller is installed on the front side of the constant temperature chamber. The top and bottom left sides of the constant temperature chamber are respectively fixedly installed with inlet and outlet pipes, and valves are installed on both the inlet and outlet pipes.

[0007] Furthermore, hydraulic cylinders are fixedly connected to both the left and right sides of the constant temperature chamber, and the telescopic ends of the hydraulic cylinders are fixedly connected to the bottom of the workbench. The installation mechanism includes a baffle, a fixing groove, a fixing block, a fixing plate, a slot, a guide groove, a lead screw, a throttle, a threaded plate, and a locking rod. A baffle is movably connected to the rear side of the mounting base.

[0008] Furthermore, the top of the baffle is fixedly connected to the bottom of the workbench, a fixing groove is provided on the rear side of the mounting base, a fixing block is movably engaged inside the fixing groove, the rear side of the fixing block is fixedly connected to the front side of the baffle, and a fixing plate is fixedly connected to the bottom of the workbench and located on the left side of the mounting base.

[0009] Furthermore, a slot is provided on the right side of the fixing plate, and a guide groove is provided on the front side of the mounting base. A lead screw is rotatably connected to the left side of the inner wall of the guide groove via a bearing. The right end of the lead screw passes through the guide groove and the mounting base in sequence and extends to the outside of the mounting base and is fixedly connected to a throttle handle.

[0010] Furthermore, the lead screw is movably connected to the mounting base, and a threaded plate is threadedly connected to the surface of the lead screw. The front side of the threaded plate passes through the guide groove and extends to the outside of the guide groove. The top, bottom, and rear side of the threaded plate are in movable contact with the inner wall of the guide groove.

[0011] Furthermore, a locking rod is fixedly connected to the left side of the threaded plate. The left end of the locking rod passes through the locking groove and extends into the interior of the locking groove. The locking rod and the locking groove are movably engaged.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: This constant temperature hydraulic test bench, through its installation mechanism, allows for easy disassembly and maintenance of the constant temperature bath rod. A hydraulic cylinder raises the worktable to a suitable height, moving the rod outside the constant temperature chamber. Turning the handle forward rotates the lead screw, which in turn moves the threaded plate to the right. The threaded plate disengages the locking rod from its slot. Pulling the mounting base forward then disengages the fixing block from its groove, allowing for the removal of the mounting base and the constant temperature bath rod. This convenient, quick, and labor-saving method facilitates the user's maintenance or replacement of the constant temperature bath rod. Attached Figure Description

[0013] Figure 1 This is a front view structural diagram of the present utility model; Figure 2 This is a side view of the structure of this utility model; Figure 3 This is a front view of the structural cross-section of this utility model; Figure 4 This is a schematic diagram of the assembly structure of the workbench and mounting base of this utility model; Figure 5 This is a rear view structural diagram of the mounting base of this utility model; Figure 6 This is a schematic diagram of the structure of the workbench of this utility model.

[0014] In the diagram: 1. Workbench; 2. Constant temperature chamber; 3. Drive motor; 4. Hydraulic pump; 5. Oil tank; 6. Constant temperature bath rod; 7. Sealing joint; 8. Mounting base; 9. Mounting mechanism; 901. Baffle; 902. Fixing groove; 903. Fixing block; 904. Fixing plate; 905. Slot; 906. Guide groove; 907. Lead screw; 908. Thruster; 909. Threaded plate; 910. Locking rod; 10. Hydraulic cylinder. Detailed Implementation

[0015] 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.

[0016] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0017] Please see Figure 1-6 A constant-temperature hydraulic test bench includes a workbench 1, a constant-temperature chamber 2, a drive motor 3, a hydraulic pump 4, an oil tank 5, a constant-temperature water bath 6, and a sealing joint 7. The constant-temperature chamber 2 is movably connected to the bottom of the workbench 1, and the drive motor 3 and the hydraulic pump 4 are fixedly installed on the top of the workbench 1. A metering and detection device is installed on the hydraulic pump 4. The drive motor 3 and the hydraulic pump 4 are connected by a high-precision coupling. The drive motor 3 serves as the power source, providing sufficient power for the operation of the hydraulic pump 4. It adopts a high-efficiency and energy-saving servo motor, which has the characteristics of stable speed and adjustable output power, and can meet the power requirements of the hydraulic pump under different test conditions. The hydraulic pump 4 is the core that converts mechanical energy into hydraulic energy. The components pressurize the hydraulic oil in the oil tank 5 and deliver it to the hydraulic circuit. The hydraulic pump 4 is connected to the oil tank 5 through the hydraulic circuit. The bottom of the workbench 1 is movably connected to the mounting base 8, which provides a mounting carrier for the thermostatic bath rod 6. It is made of corrosion-resistant material and can adapt to the humid environment inside the thermostatic chamber 2. The thermostatic bath rod 6 is fixedly connected to the bottom of the mounting base 8. The thermostatic bath rod 6 is a key component for maintaining a constant water temperature inside the thermostatic chamber 2. It converts electrical energy into heat energy to heat the water inside the thermostatic chamber 2. It works with the thermostatic controller to achieve precise control of the water temperature. The temperature control accuracy can reach ±0.5℃. The mounting base 8 and the workbench 1 are connected by the mounting mechanism 9.

[0018] Please see Figure 1-6 Hydraulic cylinders 10 are fixedly connected to both sides of the constant temperature chamber 2. The telescopic ends of the hydraulic cylinders 10 are fixedly connected to the bottom of the workbench 1. The telescopic movement of the hydraulic cylinders 10 can drive the workbench 1 to move up and down, thereby flexibly adjusting the distance between the workbench 1 and the constant temperature chamber 2, making it convenient for operators to put the parts to be tested into or take them out of the constant temperature chamber 2. The hydraulic circuit is equipped with several directional valves, throttle valves, and overflow valves. The two ends of the hydraulic circuit pass through the workbench 1 and extend into the constant temperature chamber 2. The end is equipped with a sealing joint 7. During the test, the oil inlet pipe and oil outlet pipe of the component under test are connected to the hydraulic oil circuit through the sealing joint 7. The top of the thermostatic chamber 2 is open. A thermostatic controller is installed on the front side of the thermostatic chamber 2. The thermostatic controller can monitor the water temperature in the thermostatic chamber 2 in real time and automatically control the working state of the thermostatic bath rod 6 according to the set temperature value to realize automatic adjustment and stable control of water temperature. The top and bottom left sides of the thermostatic chamber 2 are respectively fixedly installed with water inlet pipe and water outlet pipe, and valves are installed on both water inlet pipe and water outlet pipe.

[0019] Please see Figure 1-6The mounting mechanism 9 includes a baffle 901, a fixing groove 902, a fixing block 903, a fixing plate 904, a slot 905, a guide groove 906, a lead screw 907, a throttle 908, a threaded plate 909, and a locking rod 910. The baffle 901 is movably connected to the rear side of the mounting base 8. The top of the baffle 901 is fixedly connected to the bottom of the workbench 1. A fixing groove 902 is provided on the rear side of the mounting base 8. A fixing block 903 is movably engaged inside the fixing groove 902. The fixing block 903 is located on the rear side of... A fixing plate 904 is fixedly connected to the front side of the baffle 901 and to the bottom of the workbench 1, located on the left side of the mounting base 8. A slot 905 is provided on the right side of the fixing plate 904, and a guide groove 906 is provided on the front side of the mounting base 8. The guide groove 906 provides guidance for the movement of the threaded plate 909, ensuring that the threaded plate 909 can move smoothly along a straight line. A lead screw 907 is rotatably connected to the left side of the inner wall of the guide groove 906 through a bearing. The right end of the lead screw 907 passes through the guide groove. A throttle 908 is fixedly connected to a mounting base 8 and a screw 907. The screw 907 is movably connected to the mounting base 8. A threaded plate 909 is threadedly connected to the surface of the screw 907. The front side of the threaded plate 909 passes through the guide groove 906 and extends to the outside of the guide groove 906. The rotation of the screw 907 can drive the threaded plate 909 to move along the axial direction of the screw 907. The threaded plate 909 is made of high-strength steel, which has good wear resistance and structural strength, and can ensure the reliability of long-term use. The top, bottom and rear sides of the threaded plate 909 are in movable contact with the inner wall of the guide groove 906. This structural design makes the threaded plate 909 constrained by the guide groove 906 during movement, avoiding deviation and ensuring the accuracy of movement. A locking rod 910 is fixedly connected to the left side of the threaded plate 909. The left end of the locking rod 910 passes through the locking groove 905 and extends into the inside of the locking groove 905. The locking rod 910 and the locking groove 905 are movably engaged.

[0020] In practical applications: During use, the hydraulic cylinder 10 drives the workbench 1 to rise to a suitable height, and then the component to be tested is placed in the constant temperature chamber 2. The oil inlet and outlet pipes of the component to be tested are connected to the hydraulic oil circuit through the sealing joint 7. Then, the hydraulic cylinder drives the workbench to reset, and then an appropriate amount of water is injected into the constant temperature chamber 2 through the water inlet pipe. The constant temperature bath rod 6 and the constant temperature controller are started to make the water temperature in the constant temperature chamber 2 reach the temperature required for the test. The drive motor 3 is started, and the drive motor 3 drives the hydraulic pump 4 to work. The hydraulic pump 4 delivers the hydraulic oil in the oil tank 5 to the component to be tested through the hydraulic oil circuit to carry out the hydraulic test. When the thermostatic bath rod 6 needs to be repaired, the hydraulic cylinder 10 drives the worktable 1 to rise to a suitable height. Then, the handle 908 is rotated forward, which drives the lead screw 907 to rotate. The lead screw 907 drives the threaded plate 909 to move to the right. The threaded plate 909 drives the locking rod 910 to disengage from the locking groove 905. Then, the mounting base 8 is pulled forward to disengage the fixing block 903 from the fixing groove 902. The mounting base 8 and the thermostatic bath rod 6 can then be disassembled for repair. After the repair is completed, the fixing block 903 is inserted into the fixing groove 902. The handle 908 is rotated in the opposite direction to insert the locking rod 910 into the locking groove 905, thus completing the installation.

[0021] 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 constant temperature hydraulic test bench, comprising a workbench (1), a constant temperature chamber (2), a drive motor (3), a hydraulic pump (4), an oil tank (5), a constant temperature bath rod (6), and a sealing joint (7), characterized in that: The bottom of the workbench (1) is movably connected to a constant temperature box (2). The top of the workbench (1) is fixedly installed with a drive motor (3) and a hydraulic pump (4). The drive motor (3) is connected to the hydraulic pump (4). The hydraulic pump (4) is connected to the oil tank (5) through a hydraulic oil circuit. The bottom of the workbench (1) is movably connected to a mounting base (8). The bottom of the mounting base (8) is fixedly connected to a constant temperature bath rod (6). The mounting base (8) and the workbench (1) are connected through a mounting mechanism (9).

2. The constant temperature hydraulic test bench according to claim 1, characterized in that: Hydraulic cylinders (10) are fixedly connected to both sides of the constant temperature chamber (2). The telescopic ends of the hydraulic cylinders (10) are fixedly connected to the bottom of the workbench (1). Several directional valves, throttle valves and overflow valves are provided in the hydraulic oil circuit. The two ends of the hydraulic oil circuit pass through the workbench (1) and extend into the constant temperature chamber (2). The ends of the hydraulic oil circuit are provided with sealing joints (7). The top of the constant temperature chamber (2) is open. A constant temperature controller is installed on the front side of the constant temperature chamber (2). A water inlet pipe and a water outlet pipe are fixedly installed on the top and bottom left side of the constant temperature chamber (2). Valves are installed on both the water inlet pipe and the water outlet pipe.

3. The constant temperature hydraulic test bench according to claim 2, characterized in that: The installation mechanism (9) includes a baffle (901), a fixing groove (902), a fixing block (903), a fixing plate (904), a slot (905), a guide groove (906), a lead screw (907), a throttle (908), a threaded plate (909), and a locking rod (910). The baffle (901) is movably connected to the rear side of the mounting base (8).

4. The constant temperature hydraulic test bench according to claim 3, characterized in that: The top of the baffle (901) is fixedly connected to the bottom of the workbench (1). A fixing groove (902) is provided on the rear side of the mounting base (8). A fixing block (903) is movably engaged inside the fixing groove (902). The rear side of the fixing block (903) is fixedly connected to the front side of the baffle (901). A fixing plate (904) is fixedly connected to the bottom of the workbench (1) and to the left side of the mounting base (8).

5. The constant temperature hydraulic test bench according to claim 4, characterized in that: The fixing plate (904) has a slot (905) on the right side, and the mounting base (8) has a guide groove (906) on the front side. The left side of the inner wall of the guide groove (906) is rotatably connected to a lead screw (907) via a bearing. The right end of the lead screw (907) passes through the guide groove (906) and the mounting base (8) in sequence and extends to the outside of the mounting base (8) and is fixedly connected to a throttle (908).

6. The constant temperature hydraulic test bench according to claim 5, characterized in that: The lead screw (907) is movably connected to the mounting base (8). The lead screw (907) is threaded with a threaded plate (909). The front side of the threaded plate (909) passes through the guide groove (906) and extends to the outside of the guide groove (906). The top, bottom and rear side of the threaded plate (909) are in movable contact with the inner wall of the guide groove (906).

7. A constant temperature hydraulic test bench according to claim 6, characterized in that: A locking rod (910) is fixedly connected to the left side of the threaded plate (909). The left end of the locking rod (910) passes through the slot (905) and extends into the interior of the slot (905). The locking rod (910) and the slot (905) are movably engaged.

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