Durability test board for power recovery type hydraulic pump

Abstract

The utility model relates to the technical field of hydraulic pump testing and energy recovery, in particular to a power recovery type hydraulic pump durability test board which comprises a base station. The testing mechanism comprises a first motor fixed on the base station, a first transmission shaft connected with the first motor, and a testing hydraulic pump connected with the other end; the energy recovery mechanism comprises a second motor fixed on the base station, a second transmission shaft connected with the second motor, and an energy recovery hydraulic pump connected with the other end of the second transmission shaft; a hydraulic pipeline is connected between the energy recovery hydraulic pump and the test hydraulic pump; the hydraulic station is respectively connected with the energy recovery hydraulic pump and the test hydraulic pump to circulate hydraulic oil; the electric energy recovery mechanism inputs electric energy to the first motor and recovers electric energy in the second motor. According to the utility model, the test hydraulic pump is tested through the test mechanism, and the electric energy input demand of the first motor is reduced through electric energy recovery in the test process of the energy recovery mechanism and the electric energy recovery mechanism, so that the energy consumption is effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic pump testing and energy recovery, in particular to a power recovery type hydraulic pump durability test bench. Background Art

[0002] Hydraulic pumps are core components of hydraulic systems, and their performance and durability are directly related to the stability and reliability of the entire system. Therefore, durability testing of hydraulic pumps is a crucial step in the manufacturing and maintenance of hydraulic equipment. Traditional hydraulic pump durability test benches typically simulate operating conditions, subjecting hydraulic pumps to long-term continuous operation to verify their durability under high-intensity operating conditions. However, existing testing equipment consumes significant amounts of electricity during the testing process, resulting in high testing costs and significant energy waste.

[0003] While some energy recovery devices for mechanical equipment are currently available on the market, their application in hydraulic pump test benches is limited. Energy recovery in hydraulic pump test benches faces technical challenges such as unstable hydraulic system pressure and low power transmission efficiency. Most test bench designs focus solely on hydraulic performance testing, lacking design optimization for energy consumption and recovery, making it difficult to effectively reuse energy.

[0004] Therefore, there is an urgent need for a new type of hydraulic pump durability test bench that can not only meet the needs of long-term, high-intensity testing of hydraulic pumps, but also convert the hydraulic energy generated by the hydraulic pump into electrical energy through an energy recovery device, thereby realizing power recovery, reducing energy consumption during the test process, and improving the economy and environmental protection of the equipment. Utility Model Content

[0005] In view of at least one of the above technical problems, the utility model provides a power recovery type hydraulic pump durability test bench, which adopts electric energy recovery to reduce electric energy consumption.

[0006] The utility model provides a power recovery type hydraulic pump durability test bench, comprising:

[0007] A base, wherein the base has a testing mechanism and an energy recovery mechanism;

[0008] The testing mechanism includes a first motor fixed on the base, a first transmission shaft fixedly connected to an output end of the first motor, and a testing hydraulic pump connected to the other end of the first transmission shaft;

[0009] The energy recovery mechanism includes a second motor fixed to the base, a second transmission shaft fixedly connected to the output end of the second motor, and an energy recovery hydraulic pump connected to the other end of the second transmission shaft, and a hydraulic pipeline is connected between the energy recovery hydraulic pump and the test hydraulic pump;

[0010] a hydraulic station, the hydraulic station being connected to the energy recovery hydraulic pump and the test hydraulic pump, respectively, and being used for circulating the hydraulic oil between the energy recovery hydraulic pump, the test hydraulic pump, and the hydraulic station;

[0011] An electric energy recovery mechanism has one end connected to the input end of the first motor to input electric energy to the first motor, and the other end connected to the output end of the second motor to recover electric energy from the second motor.

[0012] In some embodiments of the present invention, the testing mechanism further has a mounting plate fixed on the base, a bearing seat is fixedly mounted on the mounting plate, and the first transmission shaft passes through the bearing seat and is rotatably connected.

[0013] In some embodiments of the present invention, a universal joint is rotatably connected between the first transmission shaft and the test hydraulic pump, one end of the universal joint is connected to the output end of the first transmission shaft, and the other end is connected to the rotating shaft of the test hydraulic pump.

[0014] In some embodiments of the present invention, the testing mechanism also has a first sliding assembly, including a first slide rail fixedly connected to the base, a first slider slidably arranged on the first slide rail, a first slide plate fixed on the first slide, and a first fixed plate fixed on the first slide plate, and the test hydraulic pump is fixedly mounted on the first fixed plate.

[0015] In some embodiments of the present invention, a flange is further fixedly mounted on the first fixing plate, the test hydraulic pump is fixedly connected to the flange, and the flange is adapted to multiple test hydraulic pumps.

[0016] In some embodiments of the present invention, the base also has a flipping mechanism, including a frame rotatably connected to the base, the testing mechanism is fixedly connected to the frame, and the frame also has a positioning component for positioning the flipping angle of the testing mechanism.

[0017] In some embodiments of the present invention, the positioning assembly includes a positioning rod with one end rotatably connected to the base, a sliding sleeve rotatably connected to the frame, the positioning rod passes through the sliding sleeve, and the positioning rod also has a locking member for locking the position of the sliding sleeve.

[0018] In some embodiments of the present invention, the frame further includes a rotating shaft rotatably connected between the base and the frame, and a driving member for driving the frame to rotate.

[0019] In some embodiments of the present invention, the energy recovery mechanism also has a second sliding assembly, including a second slide rail fixedly connected to the base, a second slider slidably arranged on the second slide rail, a second slide plate fixedly connected to the second slide plate, and a second fixed plate fixed on the second slide plate, and the energy recovery hydraulic pump is fixedly connected to the second fixed plate.

[0020] In some embodiments of the present invention, the formula for the actual power consumption of the power recovery mechanism is:

[0021] ;

[0022] in, is the actual power consumption of the first motor, is the power consumption of the first motor, is the recovered power of the second motor.

[0023] The beneficial effects of the present invention are as follows: the present invention realizes electric energy recovery during the test process through the energy recovery mechanism and the electric energy recovery mechanism, reduces the electric energy input demand of the first motor, thereby effectively reducing energy consumption and reducing testing costs; through the cooperation of the first motor and the second motor in the test mechanism and the energy recovery mechanism, the stability of the system operation is guaranteed and the testing efficiency is improved; the energy recovery mechanism reduces the operating load of the equipment and extends the service life of the test bench; the hydraulic station, test hydraulic pump, energy recovery hydraulic pump and hydraulic pipeline in the test bench work together to keep the system hydraulic pressure stable, more accurately simulate the working environment of the hydraulic pump, and improve the accuracy of the durability test. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0025] Figure 1 This is a schematic structural diagram of a durability test bench for a power recovery hydraulic pump in an embodiment of the present utility model;

[0026] Figure 2 This is a schematic structural diagram of another angle of the power recovery hydraulic pump durability test bench in an embodiment of the present utility model;

[0027] Figure 3 This is a schematic structural diagram of a test mechanism in a durability test bench for a power recovery hydraulic pump according to an embodiment of the present utility model;

[0028] Figure 4 This is a schematic structural diagram of another structure of a power recovery type hydraulic pump durability test bench in an embodiment of the present utility model;

[0029] Figure 5 This is a schematic structural diagram of a flip mechanism in a durability test bench for a power recovery hydraulic pump according to an embodiment of the present utility model;

[0030] Figure 6 This is a structural schematic diagram of the energy recovery mechanism in the power recovery type hydraulic pump durability test bench in an embodiment of the utility model.

[0031] Figure numerals: 1. base; 2. test mechanism; 21. first motor; 22. first transmission shaft; 23. test hydraulic pump; 24. mounting plate; 25. bearing seat; 26. universal joint; 27. first sliding assembly; 27a. first slide rail; 27b. first slider; 27c. first slide plate; 27d. first fixed plate; 27d1. flange; 3. flip mechanism; 31. frame; 32. rotating shaft; 33. driving member; 34. positioning assembly; 34a. positioning rod; 34b. sliding sleeve; 34c. locking member; 4. energy recovery mechanism; 41. second motor; 42. second transmission shaft; 43. energy recovery hydraulic pump; 44. hydraulic pipeline; 45. second sliding assembly; 45a. second slide rail; 45b. second slider; 45c. second slide plate; 45d. second fixed plate; 5. hydraulic station; 6. electric energy recovery mechanism. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0033] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly attached to the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art in the field of the present invention. The terms used in the specification of the present invention are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The term "and / or" as used herein includes any and all combinations of one or more of the relevant listed items.

[0035] like Figures 1 to 6 The power recovery hydraulic pump durability test bench shown includes: a base 1, a test mechanism 2, an energy recovery mechanism 4, a hydraulic station 5 and an electric energy recovery mechanism 6.

[0036] The base 1 is provided with a testing mechanism 2 and an energy recovery mechanism 4 .

[0037] The testing mechanism 2 includes a first motor 21 fixed on the base 1 , a first transmission shaft 22 fixedly connected to an output end of the first motor 21 , and a testing hydraulic pump 23 connected to the other end of the first transmission shaft 22 .

[0038] The energy recovery mechanism 4 includes a second motor 41 fixed on the base 1, a second transmission shaft 42 fixedly connected to the output end of the second motor 41, and an energy recovery hydraulic pump 43 connected to the other end of the second transmission shaft 42. A hydraulic pipeline 44 is connected between the energy recovery hydraulic pump 43 and the test hydraulic pump 23.

[0039] The hydraulic station 5 is connected to the energy recovery hydraulic pump 43 and the test hydraulic pump 23 respectively, and is used to circulate the hydraulic oil between the energy recovery hydraulic pump 43 and the test hydraulic pump 23 and the hydraulic station 5 .

[0040] One end of the electric energy recovery mechanism 6 is connected to the input end of the first motor 21 to input electric energy to the first motor 21 , and the other end is connected to the output end of the second motor 41 to recover electric energy from the second motor 41 .

[0041] like Figure 1 、 Figure 2 As shown, the utility model inputs hydraulic oil to the test hydraulic pump 23 through the hydraulic station 5, so that the inside of the test hydraulic pump 23 is filled with hydraulic oil, and then the hydraulic pump is driven to rotate by the first motor 21. During the rotation of the hydraulic pump, the hydraulic oil in the hydraulic pump generates hydraulic energy, and the hydraulic oil in the test hydraulic pump 23 is input to the recovery hydraulic pump through the hydraulic pipeline 44. The hydraulic oil in the recovery hydraulic pump carries hydraulic energy, which drives the rotation of the recovery hydraulic pump, and then drives the second motor 41 to rotate, so that the second motor 41 generates electrical energy, which is recovered to the electric energy recovery mechanism 6, and then circulated to the first motor 21. The insufficient amount of electricity in the actual working process of the first motor 21 is then transported externally, and the hydraulic oil in the recovery hydraulic pump is circulated back to the hydraulic station 5 through the pipeline, realizing the closed-loop circulation of the hydraulic oil and the recovery and circulation of electrical energy.

[0042] The utility model realizes electric energy recovery during the test process through the energy recovery mechanism 4 and the electric energy recovery mechanism 6, reduces the electric energy input requirement of the first motor 21, thereby effectively reducing energy consumption and reducing testing costs; through the cooperation between the first motor 21 and the second motor 41 in the test mechanism 2 and the energy recovery mechanism 4, the stability of the system operation is guaranteed and the testing efficiency is improved; the energy recovery mechanism 4 reduces the operating load of the equipment and extends the service life of the test bench; the hydraulic station 5, the test hydraulic pump 23, the energy recovery hydraulic pump 43 and the hydraulic pipeline 44 in the test bench work together to keep the system hydraulic pressure stable, more accurately simulate the working environment of the hydraulic pump, and improve the accuracy of the durability test.

[0043] like Figure 3 As shown, the test mechanism 2 also has a mounting plate 24 fixed to the base 1, with a bearing seat 25 fixedly mounted on the mounting plate 24, and the first transmission shaft 22 passes through the bearing seat 25 and is rotatably connected. By providing the mounting plate 24 and the bearing seat 25 in the test mechanism 2, the mounting plate 24 is fixed to the base 1, the bearing seat 25 is mounted on the mounting plate 24, and the first transmission shaft 22 passes through the bearing seat 25 and is rotatably connected, the stability and support of the first transmission shaft 22 are effectively improved, the deviation and wear of the shaft during high-speed operation are reduced, the service life of the transmission components is extended, and the vibration and noise during equipment operation are reduced, thereby improving the overall stability and test accuracy of the test bench.

[0044] Continue as Figure 3 As shown, in some embodiments of the present invention, a universal joint 26 is further rotatably connected between the first transmission shaft 22 and the test hydraulic pump 23. One end of the universal joint 26 is connected to the output end of the first transmission shaft 22, and the other end is connected to the rotating shaft of the test hydraulic pump 23. By adding the universal joint 26 between the first transmission shaft 22 and the test hydraulic pump 23, the flexibility and adaptability of the transmission system are effectively improved, allowing the transmission shaft to deviate within a certain angle range, thereby compensating for minor alignment deviations caused by installation errors or operation, and reducing stress and wear on transmission components.

[0045] In some embodiments of the present invention, Figure 3 As shown, the test mechanism 2 also has a first sliding assembly 27, which includes a first slide rail 27a fixedly connected to the base 1, a first slider 27b slidably disposed on the first slide rail 27a, a first slide plate 27c fixed to the first slider 27b, and a first fixed plate 27d fixed to the first slide plate 27c. The test hydraulic pump 23 is fixedly mounted on the first fixed plate 27d. The provision of the first sliding assembly 27 allows the test hydraulic pump 23 to be flexibly adjusted on the slide rail to accommodate different installation requirements, facilitates maintenance and replacement, and improves the convenience and flexibility of testing.

[0046] Continue as Figure 3 As shown, a flange 27d1 is also fixedly mounted on the first fixing plate 27d, to which the test hydraulic pump 23 is fixedly connected. The flange 27d1 is adapted to accommodate a variety of test hydraulic pumps 23. The test hydraulic pump 23 is fixedly connected to the first fixing plate 27d via the flange 27d1, and the flange 27d1 is adapted to accommodate test hydraulic pumps 23 of various specifications. This improves the versatility and adaptability of the test bench, enabling it to quickly accommodate different models of hydraulic pumps for testing, simplifying the installation and replacement process and reducing equipment downtime.

[0047] like Figure 4 、 Figure 5 As shown, in some embodiments of the present invention, the base 1 is further provided with a flipping mechanism 3, including a frame 31 connected to the base 1 for relative rotation, the test mechanism 2 is fixedly connected to the frame 31, and the frame 31 is further provided with a positioning assembly 34 for positioning the flipping angle of the test mechanism 2. The setting of the flipping mechanism 3 allows the test mechanism 2 to be flipped and adjusted at different angles to simulate the operating conditions of the hydraulic pump under various installation and working angles, thereby improving the comprehensiveness and reliability of the test, ensuring the precise control of the flipping angle, and improving the operational safety and the accuracy of the test data. It should be pointed out here that there are many forms of the positioning assembly 34, which can be the meshing of a gear rack, the cooperation of a locating pin and a locating hole, or a hydraulic or pneumatic locking mechanism.

[0048] Continue to refer Figure 4 、 Figure 5 As shown, positioning assembly 34 includes a positioning rod 34a, one end of which is pivotally connected to base 1, and a sliding sleeve 34b, which is pivotally connected to frame 31. Positioning rod 34a passes through sliding sleeve 34b. Positioning rod 34a also has a locking member 34c for locking sliding sleeve 34b in place. The sliding sleeve 34b slides on positioning rod 34a, driving the flipping mechanism 3 to flip. After reaching a set angle, the rotation stops and is fixed. This allows positioning rod 34a to slide flexibly at different angles. Locking member 34c precisely locks the sliding sleeve 34b in place, achieving reliable positioning of test mechanism 2. This simple and efficient structure ensures the stability of the flip angle, facilitates adjustment, and guarantees safety and data accuracy during the test process.

[0049] like Figure 5 As shown, the frame 31 also includes a rotating shaft 32 rotatably connected between the base 1 and the frame 31, and a driving member 33 for driving the rotation of the frame 31. The rotating shaft 32 and the driving member 33 enable the frame 31 to be adjusted stably and smoothly. The driving member 33 provides precise driving force, enabling the test mechanism 2 to switch conveniently between different test angles, reducing the workload of manual adjustment, improving operational efficiency, and improving the accuracy of flip positioning.

[0050] like Figure 6 As shown, the energy recovery mechanism 4 further includes a second sliding assembly 45, comprising a second slide rail 45a fixedly connected to the base 1, a second slider 45b slidably disposed on the second slide rail 45a, a second slide plate 45c fixedly connected to the second slider 45b, a second fixed plate 45d fixed to the second slide plate 45c, and an energy recovery hydraulic pump 43 fixedly connected to the second fixed plate 45d. The energy recovery mechanism 4 enables the energy recovery hydraulic pump 43 to be positioned along the slide rail, facilitating installation and maintenance for different testing requirements, improving the flexibility of the energy recovery system, and ensuring the stability of the hydraulic pump and the accuracy of its working position, thereby enhancing the ease of operation and overall stability of the equipment.

[0051] In some embodiments of the present invention, the formula for the actual power consumption of the power recovery mechanism 6 is:

[0052] ;

[0053] in, is the actual power consumption of the first motor 21, is the power consumption of the first motor 21, is the recovered electricity of the second motor 41 .

[0054] The utility model effectively reduces the net power consumption of the first motor 21 by recycling electric energy, significantly saves energy, reduces the power consumption during the test process, thereby improving the economy and environmental protection of the test bench, and helping to achieve a green and energy-saving test solution.

[0055] Those skilled in the art should understand that the present invention is not limited to the above-described embodiments. The above-described embodiments and the specification are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A power recovery hydraulic pump durability test bench, characterized in that: include: A base, wherein the base has a testing mechanism and an energy recovery mechanism; The testing mechanism includes a first motor fixed on the base, a first transmission shaft fixedly connected to an output end of the first motor, and a testing hydraulic pump connected to the other end of the first transmission shaft; The energy recovery mechanism includes a second motor fixed to the base, a second transmission shaft fixedly connected to the output end of the second motor, and an energy recovery hydraulic pump connected to the other end of the second transmission shaft, and a hydraulic pipeline is connected between the energy recovery hydraulic pump and the test hydraulic pump; a hydraulic station, the hydraulic station being connected to the energy recovery hydraulic pump and the test hydraulic pump, respectively, and being used for circulating the hydraulic oil between the energy recovery hydraulic pump, the test hydraulic pump, and the hydraulic station; An electric energy recovery mechanism has one end connected to the input end of the first motor to input electric energy to the first motor, and the other end connected to the output end of the second motor to recover electric energy from the second motor.

2. The power recovery type hydraulic pump durability test bench according to claim 1, characterized in that: The testing mechanism also has a mounting plate fixed on the base, a bearing seat is fixedly mounted on the mounting plate, and the first transmission shaft passes through the bearing seat and is rotatably connected.

3. The power recovery type hydraulic pump durability test bench according to claim 2, characterized in that: A universal shaft is rotatably connected between the first transmission shaft and the test hydraulic pump. One end of the universal shaft is connected to the output end of the first transmission shaft, and the other end is connected to the rotating shaft of the test hydraulic pump.

4. The power recovery type hydraulic pump durability test bench according to claim 1, characterized in that: The testing mechanism also has a first sliding assembly, including a first slide rail fixedly connected to the base, a first slider slidably arranged on the first slide rail, a first slide plate fixed on the first slide, and a first fixed plate fixed on the first slide plate. The test hydraulic pump is fixedly mounted on the first fixed plate.

5. The power recovery type hydraulic pump durability test bench according to claim 4, characterized in that: A flange is also fixedly mounted on the first fixing plate, and the test hydraulic pump is fixedly connected to the flange. The flange is adapted to multiple test hydraulic pumps.

6. The power recovery type hydraulic pump durability test bench according to claim 1, characterized in that: The base is also provided with a flipping mechanism, which includes a frame rotatably connected to the base, the testing mechanism is fixedly connected to the frame, and the frame is also provided with a positioning component for positioning the flipping angle of the testing mechanism.

7. The power recovery type hydraulic pump durability test bench according to claim 6, characterized in that: The positioning assembly includes a positioning rod with one end rotatably connected to the base, a sliding sleeve rotatably connected to the frame, the positioning rod passes through the sliding sleeve, and the positioning rod also has a locking piece for locking the position of the sliding sleeve.

8. The power recovery type hydraulic pump durability test bench according to claim 6, characterized in that: The frame further includes a rotating shaft rotatably connected between the base and the frame, and a driving member for driving the frame to rotate.

9. The power recovery type hydraulic pump durability test bench according to claim 1, characterized in that: The energy recovery mechanism also has a second sliding assembly, including a second slide rail fixedly connected to the base, a second slider slidably arranged on the second slide rail, a second slide plate fixedly connected to the second slide plate, and a second fixed plate fixed on the second slide plate. The energy recovery hydraulic pump is fixedly connected to the second fixed plate.

10. The power recovery type hydraulic pump durability test bench according to claim 1, characterized in that: The formula for the actual power consumption in the electric energy recovery mechanism is: ； in, is the actual power consumption of the first motor, is the power consumption of the first motor, is the recovered power of the second motor.

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