Test device for hydraulic equipment detection
By introducing buffer heat dissipation components and flexible suspension structures into the testing device for hydraulic equipment testing, the problem of lack of buffering and shock absorption in traditional hydraulic equipment testing benches has been solved, achieving higher testing accuracy and equipment stability, and extending equipment life.
Patent Information
- Application Number
- CN202520884712.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-07
- Publication Date
- 2026-02-24
- Estimated Expiration
- 2035-05-07
AI Technical Summary
Traditional hydraulic equipment testing benches lack buffering and shock absorption mechanisms when fixing hydraulic pumps, which cannot effectively absorb vibration energy, resulting in inaccurate test data and easy damage to the equipment.
The test bench is designed with a horizontal L-shaped structure, combined with a buffer and heat dissipation assembly and a flexible suspension structure. Through components such as a buffer and heat dissipation collar, a U-shaped lifting rod, and a hydraulic damper, it achieves multi-stage buffering and heat dissipation, absorbs vibration energy, and prevents hydraulic pump displacement and structural damage.
It improves the accuracy of hydraulic equipment testing data and equipment stability, extends service life, reduces maintenance frequency, and enhances vibration resistance.
Smart Images
Figure CN223938387U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of hydraulic equipment testing technology, and in particular, it is a testing device for testing hydraulic equipment. Background Technology
[0002] Hydraulic systems, as an indispensable means of power transmission and control in modern industrial equipment, are widely used in fields such as engineering machinery, aerospace, shipbuilding, and automated production lines. To ensure the stability, reliability, and safety of hydraulic equipment in actual operation, rigorous performance testing and verification are typically required before leaving the factory or after maintenance. Hydraulic equipment testing devices are specialized equipment designed for this purpose, used to simulate load conditions under real-world operating conditions and conduct multiple performance tests on key components such as hydraulic pumps, hydraulic cylinders, and valves, including pressure, flow rate, temperature rise, and vibration. These devices not only require good structural strength and operational safety but also excellent dynamic heat dissipation and vibration resistance to ensure the accuracy of test data and the stability of the device itself.
[0003] Traditional hydraulic equipment testing benches often use rigid supports or simple spring-type support structures to fix the hydraulic pump. Although this structure is low in cost and easy to install, it has some problems, such as: rigid connections without buffering, ineffective absorption of vibration energy, and lack of multi-stage damping and sliding guidance mechanisms, making it unable to adapt to complex vibration modes. Utility Model Content
[0004] The purpose of this invention is to provide a testing device for testing hydraulic equipment, so as to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a testing device for hydraulic equipment, comprising a hydraulic testing assembly, the hydraulic testing assembly including a horizontal L-shaped test bench and a hydraulic pump installed at one end of the horizontal L-shaped test bench, wherein a buffer heat dissipation assembly is provided on the inner wall of the side of the horizontal L-shaped test bench near the hydraulic pump, the buffer heat dissipation assembly including a first buffer heat dissipation collar and a second buffer heat dissipation collar symmetrically sleeved at both ends of the periphery of the hydraulic pump, and an L-shaped lifting beam welded to the inner wall of the horizontal L-shaped test bench, wherein two connecting rods symmetrically pass through the first buffer heat dissipation collar and the second buffer heat dissipation collar. A crossbar, with an inverted U-shaped lifting rod connecting the top ends of the two crossbars, a fixing block fixed in the middle of the top surface of the U-shaped lifting rod, a rectangular groove for sliding connection of the fixing block in the middle of the inner top wall of the L-shaped lifting beam, buffer components at both ends of the fixing block and on both sides of the rectangular groove, and an air blowing heat dissipation component on the outer wall of the horizontal L-shaped test bench, the air blowing heat dissipation component supplying air to the U-shaped lifting rod, so that the gas is discharged from the first heat dissipation air blowing mesh on the inner wall of the first buffer heat dissipation sleeve and the second buffer heat dissipation sleeve to blow air to dissipate heat from the hydraulic pump.
[0006] In this preferred embodiment, the inner walls of both connecting crossbars are provided with second heat dissipation air blowing mesh holes, and the first buffer heat dissipation collar, the second buffer heat dissipation collar, the connecting crossbar, and the U-shaped hoisting rod are all hollow and gas is delivered in their respective inner cavities.
[0007] In a preferred embodiment, a positioning crossbar is horizontally connected inside the fixing block, with both ends of the positioning crossbar fixed in a rectangular groove, and the buffer component is positioned above the positioning crossbar.
[0008] In a preferred embodiment, the buffer component includes hydraulic dampers symmetrically installed on the outer walls of both sides of the fixed snap-fit block, and the tail ends of the two hydraulic dampers at opposite ends are both installed on the inner wall of the rectangular groove by screws.
[0009] In this preferred embodiment, when the U-shaped hoisting rod is subjected to vibration, the U-shaped hoisting rod drives the fixed locking block to slide in the rectangular groove, and the vibration is buffered and reduced by two hydraulic dampers.
[0010] In this preferred embodiment, a rubber buffer pad is adhered to the inner wall of the other side of the L-shaped hoisting beam, and the rubber buffer pad elastically abuts against the outer wall of one side of the U-shaped hoisting rod.
[0011] In a preferred embodiment, the horizontal L-shaped test bench has a detachable maintenance side plate installed on the outer wall of the side facing away from the hydraulic pump by screws. The air blowing heat dissipation component includes an exhaust fan that runs through the outer wall of the detachable maintenance side plate and an air supply pipe connected inside the exhaust fan.
[0012] In this preferred embodiment, one end of the gas supply pipe is connected through a U-shaped hoisting rod, and the end of the gas supply pipe near the exhaust fan is provided with a blowing and gathering end, which is sealed to the inner end of the exhaust fan.
[0013] In this preferred embodiment, an air blower is embedded in the outer wall of the detachable maintenance side panel on one side of the exhaust fan, and the air blower extracts and discharges the heat from the horizontal L-shaped test bench.
[0014] In this preferred embodiment, multiple air intake screens are symmetrically arranged on both outer walls of the horizontal L-shaped test bench.
[0015] Compared with the prior art, the technical effects and advantages of this utility model are as follows:
[0016] The test device for testing hydraulic equipment has a first buffer heat dissipation sleeve and a second buffer heat dissipation sleeve respectively fitted on the front and rear ends of the hydraulic pump to form a closed wrapping structure. This structure not only achieves physical fixation of the hydraulic pump, but also provides a good heat dissipation contact surface, prevents displacement of the hydraulic pump during operation, improves shock resistance, and forms a stable heat dissipation foundation, providing structural support for subsequent air blowing heat dissipation.
[0017] The U-shaped lifting rod slides into the rectangular groove at the top of the L-shaped lifting beam via a fixed locking block. This structure allows the hydraulic pump to move freely within a certain range without detaching from the main structure, achieving "flexible suspension" of the hydraulic pump. This effectively absorbs high-frequency vibrations, reduces mechanical fatigue and structural damage caused by vibrations, and improves the stability and reliability of the overall system.
[0018] When the hydraulic pump starts and generates vibration, the vibration energy is transmitted to the fixed locking block through the U-shaped lifting rod. The locking block slides in the rectangular groove, driving the buffer components on both sides (such as hydraulic dampers) to work. The multi-stage buffer structure works together to absorb the vibration energy. Compared with the existing technology, it significantly reduces the risk of vibration being transmitted to the test bench base or other components, improves the accuracy of test data, reduces misjudgments caused by vibration, extends the service life of equipment, and reduces the frequency of maintenance. Attached Figure Description
[0019] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0020] Figure 1 This is a schematic diagram of the structure of this utility model;
[0021] Figure 2 This is a schematic diagram of the structure of the first and second buffer heat dissipation collars of this utility model;
[0022] Figure 3 This is a schematic diagram of the installation structure of the positioning crossbar and hydraulic damper of this utility model;
[0023] Figure 4 This is a schematic diagram of the installation structure of the exhaust fan and the blower fan of this utility model.
[0024] Explanation of reference numerals in the attached figures:
[0025] In the diagram: 1. Hydraulic test assembly; 2. Horizontal L-shaped test bench; 3. Hydraulic pump; 4. Air inlet mesh; 5. L-shaped lifting beam; 6. First buffer cooling ring; 7. Second buffer cooling ring; 8. Buffer cooling assembly; 9. First cooling air blowing mesh; 10. Connecting crossbar; 11. Second cooling air blowing mesh; 12. U-shaped lifting rod; 13. Fixing clip block; 14. Rubber buffer pad; 15. Air supply pipe; 16. Positioning crossbar; 17. Hydraulic damper; 18. Air blowing convergence end; 19. Removable maintenance side plate; 20. Exhaust fan; 21. Air blowing fan. Detailed Implementation
[0026] In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. However, it will be apparent to those skilled in the art that the present invention can be practiced without one or more of these details. In other instances, certain technical features well-known in the art have not been described in order to avoid confusion with the present invention.
[0027] Unless otherwise defined, the directions mentioned herein, such as up, down, left, right, front, back, inside, and outside, are based on the directions shown in the figures of this utility model, and are explained here together.
[0028] This embodiment provides, for example Figures 1 to 4The diagram shows a testing device for testing hydraulic equipment, comprising a hydraulic testing assembly 1. The hydraulic testing assembly 1 includes a horizontal L-shaped test bench 2 and a hydraulic pump 3 installed at one end of the horizontal L-shaped test bench 2. A buffer and heat dissipation assembly 8 is provided on the inner wall of the side of the horizontal L-shaped test bench 2 closest to the hydraulic pump 3. The buffer and heat dissipation assembly 8 includes a first buffer and heat dissipation collar 6 and a second buffer and heat dissipation collar 7 symmetrically fitted around both ends of the hydraulic pump 3, and an L-shaped lifting beam 5 welded to the inner wall of the horizontal L-shaped test bench 2. Two connecting crossbars 10 symmetrically pass through the first and second buffer and heat dissipation collars 6 and 7, respectively. An inverted U-shaped lifting rod 12 is connected between the top ends of the two connecting crossbars 10, and the top surface of the U-shaped lifting rod 12 is fixed at the middle position. A fixed locking block 13 is provided. A rectangular groove is provided in the middle of the inner top wall of the L-shaped lifting beam 5 for the fixed locking block 13 to slide and connect. Buffer components are provided at both ends of the fixed locking block 13 and on both sides of the rectangular groove. When the hydraulic pump 3 vibrates during operation, the first buffer heat dissipation sleeve 6 and the second buffer heat dissipation sleeve 7 are used to securely wrap the hydraulic pump 3 and suspend it inside the L-shaped lifting beam 5 through the U-shaped lifting rod 12. The buffer components buffer and reduce vibration. An air blowing heat dissipation component is provided on the outer wall of the horizontal L-shaped test bench 2. The air blowing heat dissipation component delivers air to the U-shaped lifting rod 12, so that the gas is discharged from the first heat dissipation air blowing mesh 9 on the inner wall of the first buffer heat dissipation sleeve 6 and the second buffer heat dissipation sleeve 7 to blow air and dissipate heat to the hydraulic pump 3.
[0029] In this embodiment, the inner walls of both connecting crossbars 10 are provided with second heat dissipation air blowing mesh holes 11. The first buffer heat dissipation collar 6, the second buffer heat dissipation collar 7, the connecting crossbars 10 and the U-shaped hoisting rod 12 are all hollow and gas is delivered in their respective inner cavities.
[0030] In this embodiment, a positioning crossbar 16 is horizontally connected through the inside of the fixing block 13. The two ends of the positioning crossbar 16 are fixed in the rectangular groove, and the buffer component is disposed above the positioning crossbar 16.
[0031] In this embodiment, the buffer component includes hydraulic dampers 17 symmetrically installed on the outer walls of both sides of the fixed snap block 13. The tail ends of the two hydraulic dampers 17 at opposite ends are installed on the inner wall of the rectangular groove by screws.
[0032] In this embodiment, when the U-shaped lifting rod 12 is subjected to vibration, the U-shaped lifting rod 12 drives the fixed locking block 13 to slide in the rectangular groove, and the vibration is buffered and reduced by two hydraulic dampers 17.
[0033] In this embodiment, a rubber buffer pad 14 is bonded to the inner wall of the other side of the L-shaped lifting beam 5, and the rubber buffer pad 14 elastically abuts against the outer wall of one side of the U-shaped lifting rod 12.
[0034] In this embodiment, a detachable maintenance side plate 19 is installed on the outer wall of the horizontal L-shaped test bench 2 facing away from the hydraulic pump 3 by screws. The air blowing heat dissipation component includes an exhaust fan 20 that runs through the outer wall of the detachable maintenance side plate 19 and an air supply pipe 15 connected inside the exhaust fan 20.
[0035] In this embodiment, one end of the gas supply pipe 15 is connected through to the U-shaped lifting rod 12. A blowing convergence end 18 is provided at the end of the gas supply pipe 15 near the exhaust fan 20, and the blowing convergence end 18 is sealed to the inner end of the exhaust fan 20. This allows the exhaust fan 20 to blow air towards the blowing convergence end 18. The design of the blowing convergence end 18 seals and surrounds the inner end of the exhaust fan 20, allowing gas to be delivered from the blowing convergence end 18 to the gas supply pipe 15, and then from the gas supply pipe 15 to the U-shaped lifting rod 12. The U-shaped lifting rod 12 then delivers the gas to the connecting crossbar 10 and the first buffer cooling ring 6 and the second buffer cooling ring 7, dissipating heat from the hydraulic pump 3. The gas supply pipe 15 extends into the horizontal L-shaped test bench 2, ensuring that the blowing convergence end 18 is sealed to the inner end of the exhaust fan 20.
[0036] In this embodiment, an air blower 21 is embedded in the outer wall of the detachable maintenance side plate 19 on one side of the exhaust fan 20. The air blower 21 draws away and discharges the heat from the horizontal L-shaped test bench 2.
[0037] In this embodiment, multiple air inlet grilles 4 are symmetrically arranged on both outer walls of the horizontal L-shaped test bench 2.
[0038] Working principle
[0039] The testing device for hydraulic equipment includes a hydraulic pump 3 to be tested, which is installed at one end of a horizontal L-shaped test bench 2 and secured by a first buffer cooling sleeve 6 and a second buffer cooling sleeve 7. The hydraulic pump 3 is suspended inside an L-shaped lifting beam 5 by a U-shaped lifting rod 12. This lifting structure slides with a rectangular groove on the top of the L-shaped lifting beam 5 through a fixed locking block 13, ensuring the overall structure is stable but allowing a certain displacement. One end of the air supply pipe 15 is connected to the U-shaped lifting rod 12, and the other end is sealed to the exhaust fan 20 through an air-gathering end 18. The exhaust fan 20 and the air-blowing fan 21 are installed on a detachable maintenance side plate 19, forming a complete ventilation and heat dissipation channel. The air intake net 4 is distributed on both sides of the horizontal L-shaped test bench 2, providing an external cooling air source for the entire system.
[0040] When the hydraulic pump 3 starts running, due to the flow of liquid and mechanical operation, a certain mechanical vibration will be generated. The vibration is transmitted to the fixed clamping block 13 through the U-shaped lifting rod 12, causing it to slide in the rectangular groove of the L-shaped lifting beam 5. The hydraulic dampers 17 installed on both sides of the fixed clamping block 13 are stretched or compressed, absorbing the vibration energy and achieving primary buffering. The rubber buffer pad 14 between the U-shaped lifting rod 12 and the L-shaped lifting beam 5 further provides elastic support, playing a secondary buffering role and preventing rigid impact.
[0041] The exhaust fan 20 starts, blowing cooling gas into the air supply pipe 15. The air converging end 18 concentrates and guides the airflow to the air supply pipe 15, improving the delivery efficiency. The cooling gas passes sequentially through the air supply pipe 15, the U-shaped lifting rod 12, the connecting crossbar 10, the first buffer heat dissipation ring 6, and the second buffer heat dissipation ring 7, which are hollow cavities. The first heat dissipation air blowing mesh 9 is provided on the inner wall of the first buffer heat dissipation ring 6 and the second buffer heat dissipation ring 7. The gas is sprayed out from here and directly blows air to cool the surface of the hydraulic pump 3. In addition, the second heat dissipation air blowing mesh 11 is provided on the inner wall of the connecting crossbar 10 to help cool the area around the hydraulic pump 3. The air blowing fan 21 starts at the same time, drawing away the hot air generated inside the horizontal L-shaped test bench 2 due to operation. The external cold air enters the test bench through multiple air inlets 4, forming an air convection circulation, further improving the overall heat dissipation efficiency.
[0042] The detachable maintenance side panel 19 can be quickly removed with screws, making it convenient for technicians to inspect and replace key components such as the exhaust fan 20 and the air supply pipe 15. Buffer components such as the hydraulic damper 17 and the rubber buffer pad 14 can be adjusted or replaced as needed to ensure long-term operational stability.
[0043] It should be noted that, in this document, relational terms such as "one" and "two" 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, the phrase "comprising an element defined as..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.
[0044] 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 testing device for testing hydraulic equipment, comprising a hydraulic testing assembly (1), characterized in that: The hydraulic test assembly (1) includes a horizontal L-shaped test bench (2) and a hydraulic pump (3) installed at one end of the horizontal L-shaped test bench (2). A buffer heat dissipation assembly (8) is provided on the inner wall of the horizontal L-shaped test bench (2) near the hydraulic pump (3). The buffer heat dissipation assembly (8) includes a first buffer heat dissipation collar (6) and a second buffer heat dissipation collar (7) symmetrically sleeved on both ends of the hydraulic pump (3) and an L-shaped lifting beam (5) welded to the inner wall of the horizontal L-shaped test bench (2). Two connecting crossbars (10) are symmetrically connected between the first buffer heat dissipation collar (6) and the second buffer heat dissipation collar (7). The top ends of the two connecting crossbars (10) are connected. The system is connected to an inverted U-shaped lifting rod (12). A fixing block (13) is fixed at the middle of the top surface of the U-shaped lifting rod (12). A rectangular groove is provided at the middle of the inner top wall of the L-shaped lifting beam (5) for the fixing block (13) to slide and connect. Buffer components are provided at both ends of the fixing block (13) and on both sides of the rectangular groove. An air-blowing heat dissipation component is provided on the outer wall of the horizontal L-shaped test bench (2). The air-blowing heat dissipation component delivers air to the U-shaped lifting rod (12), so that the gas is discharged from the first heat dissipation air-blowing mesh (9) on the inner wall of the first buffer heat dissipation sleeve (6) and the second buffer heat dissipation sleeve (7) to blow air and dissipate heat to the hydraulic pump (3).
2. The testing device for testing hydraulic equipment according to claim 1, characterized in that: The inner walls of the two connecting crossbars (10) are provided with second heat dissipation air blowing mesh holes (11). The first buffer heat dissipation collar (6), the second buffer heat dissipation collar (7), the connecting crossbar (10) and the U-shaped hoisting rod (12) are all hollow and gas is delivered in their respective inner cavities.
3. The testing device for testing hydraulic equipment according to claim 2, characterized in that: The fixed snap-fit block (13) has a horizontally penetrating positioning crossbar (16) inside. The two ends of the positioning crossbar (16) are fixed in the rectangular groove, and the buffer component is located above the positioning crossbar (16).
4. The testing device for testing hydraulic equipment according to claim 3, characterized in that: The buffer component includes hydraulic dampers (17) symmetrically installed on the outer walls of both sides of the fixed snap block (13). The tail ends of the two hydraulic dampers (17) at opposite ends are installed on the inner wall of the rectangular groove by screws.
5. The testing device for testing hydraulic equipment according to claim 4, characterized in that: When the U-shaped lifting rod (12) is subjected to vibration, the U-shaped lifting rod (12) drives the fixed locking block (13) to slide in the rectangular groove, and the vibration is buffered and reduced by two hydraulic dampers (17).
6. The testing device for testing hydraulic equipment according to claim 5, characterized in that: A rubber buffer pad (14) is bonded to the inner wall of the other side of the L-shaped hoisting beam (5), and the rubber buffer pad (14) elastically abuts against the outer wall of one side of the U-shaped hoisting rod (12).
7. The testing device for testing hydraulic equipment according to claim 6, characterized in that: The horizontal L-shaped test bench (2) has a removable maintenance side plate (19) installed on the outer wall of the side facing away from the hydraulic pump (3) by screws. The air blowing heat dissipation component includes an exhaust fan (20) that runs through the outer wall of the removable maintenance side plate (19) and an air supply pipe (15) connected inside the exhaust fan (20).
8. The testing device for testing hydraulic equipment according to claim 7, characterized in that: One end of the gas supply pipe (15) is connected through to the U-shaped hoisting rod (12). The end of the gas supply pipe (15) near the exhaust fan (20) is provided with a blowing and gathering end (18), which is sealed to the inner end of the exhaust fan (20).
9. A testing device for testing hydraulic equipment according to claim 8, characterized in that: An air blower (21) is embedded in the outer wall of the detachable maintenance side panel (19) on one side of the exhaust fan (20), and the air blower (21) extracts and discharges the heat from the horizontal L-shaped test bench (2).
10. A testing device for testing hydraulic equipment according to claim 9, characterized in that: The horizontal L-shaped test bench (2) has multiple air inlet grilles (4) symmetrically arranged on both outer walls.