CN213658235U - Hydro-pneumatic spring damping testing device - Google Patents
Hydro-pneumatic spring damping testing device Download PDFInfo
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- CN213658235U CN213658235U CN202022674950.6U CN202022674950U CN213658235U CN 213658235 U CN213658235 U CN 213658235U CN 202022674950 U CN202022674950 U CN 202022674950U CN 213658235 U CN213658235 U CN 213658235U
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Abstract
The utility model relates to a hydro-pneumatic spring damping testing arrangement, its characterized in that: the device mainly comprises a hinged thrust rod with a sensor, a power oil cylinder, a damping valve cavity limiting end cover, an energy accumulator and a limiting dustproof baffle; the limiting dustproof baffle is fixed at the front end of the power oil cylinder, and the limiting end cover of the damping valve cavity limits a damping valve at the rear part of the power oil cylinder; the hinged thrust rod with the sensor slides in the power cylinder; the energy accumulator is arranged at the rear end of the power cylinder, and an oil port of the damping valve is communicated with an oil port of the energy accumulator. When the testing device is used, a tested damping valve needs to be installed in a damping working cavity, and a damping test is carried out under the condition that the inside of the device is full of hydraulic oil and the air pressure of an energy accumulator meets the use requirement. The testing device can test various damping valves and valve blocks with different appearance structures; meanwhile, the testing device is provided with pressure and displacement sensors, so that the damping characteristic parameters of the damping valve can be tested in real time and data can be analyzed.
Description
Technical Field
The utility model relates to a hydro-pneumatic spring damping testing arrangement belongs to armoured vehicle action system hydraulic engineering component test technical field, need during the use with the damping valve direct mount of testing, or adopt supporting disk seat and damping valve to assemble the back and install this testing arrangement's damping work intracavity.
Background
The hydro-pneumatic spring has excellent nonlinear elastic characteristics, is beneficial to improving the stability of the vehicle, and is widely applied to the technical field of suspension of a vehicle moving system. The damping valve is used as a main damping element of the oil-gas spring vibration damping buffer, and the damping characteristic of the damping valve is important.
The hydro-pneumatic spring needs to be carried to a designated position of a vehicle in actual engineering application, the overall performance of the hydro-pneumatic spring needs to be verified, examined and subjected to data analysis through an actual vehicle test, so that the performance parameters of the hydro-pneumatic spring are optimized and improved, and the performance of a damping valve is an important factor influencing the overall performance of the hydro-pneumatic spring. Hydro-pneumatic spring goes wrong in the in-service use of vehicle especially when being directed at the damping valve, it is inconvenient to dismantle, waste time and energy, and cause certain influence to rather than the result of use of other spare parts of complex, have good buffering damping effect in order to guarantee the damping valve, reflect good damping characteristic among the action process, need open up the test of characteristic parameter to the damping valve, analysis test data carries out configuration optimization to the damping valve, finally realize the promotion of damping valve damping characteristic and rational and reliable be applied to in the engineering reality.
Before the damping valve product is assembled and loaded with the hydro-pneumatic spring, the damping valve can be tested by adopting a testing device, the performance test can be performed on the damping valve by adopting the testing device, the damping valve product can be used for performance detection and batch inspection before delivery, unqualified products can be found in time, the problem of hidden danger caused by the fact that the relevant performance test is not performed before the hydro-pneumatic spring is assembled can be eliminated as much as possible, and the damping valve product testing device has important significance for improving the performance of the damping valve product and engineering application. The existing testing system adopts an oil cylinder assembly to realize dynamic characteristic parameter testing of shock absorber damping, and emphasizes a testing module system and a testing method, so that the structure is complex and the requirement on a control system is high.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a hydro-pneumatic spring damping testing arrangement has realized the test mode to the damping valve under the simulation hydro-pneumatic spring operating condition to show and the analysis through being equipped with the real-time data of power and displacement sensor with the damping test at testing arrangement structure assigned position.
The technical scheme of the utility model is that:
the utility model provides a hydro-pneumatic spring damping testing arrangement which characterized in that: the device mainly comprises a hinged thrust rod with a sensor, a power oil cylinder, a damping valve cavity limiting end cover, an energy accumulator and a limiting dustproof baffle; the limiting dustproof baffle is fixed at the front end of the power oil cylinder, and the limiting end cover of the damping valve cavity limits a damping valve at the rear part of the power oil cylinder; the hinged thrust rod with the sensor slides in the power cylinder; the energy accumulator is arranged at the rear end of the power cylinder, and an oil port of the damping valve is communicated with an oil port of the energy accumulator.
Has the advantages that: the utility model discloses a test mode to the damping valve under the simulation oil gas spring operating condition to show and the analysis through being equipped with power and displacement sensor at testing arrangement structure assigned position with the real-time data of damping test, testing arrangement easy operation, installation are disassembled convenient and fast, the device structure is small. When the testing device is used, the tested damping valve is required to be directly installed or installed in a damping working cavity of the testing device after being assembled by adopting a matched valve seat and the damping valve, and the damping test is carried out under the condition that the inside of the testing device is filled with hydraulic oil and the air pressure of the energy accumulator meets the use requirement. The testing device can test various damping valves and valve blocks with different appearance structures; meanwhile, the testing device is provided with pressure and displacement sensors, so that the damping characteristic parameters of the damping valve can be tested in real time and data can be analyzed.
Drawings
FIG. 1 is a diagram of a damping test apparatus
FIG. 2 is a block diagram of a damping test device without an accumulator
FIG. 3 is a diagram of a hinged thrust rod with a sensor and its components
FIG. 4 is a diagram of a damping valve cavity limiting end cap and its components
FIG. 5 is a schematic view of a limiting dust guard and its components
FIG. 6 is a diagram of a sensor assembly
FIG. 7 is a schematic view of a damping valve seat and a structure thereof adapted to different shapes of damping valve cavities
Fig. 8 is a diagram of the power cylinder.
Detailed Description
In order to make the objects, contents and advantages of the present invention clearer, the following description will be made in further detail with respect to the embodiments of the present invention.
The utility model provides a hydro-pneumatic spring damping testing arrangement which characterized in that: the device mainly comprises a hinged thrust rod 1 with a sensor, a power oil cylinder 2, a damping valve cavity limiting end cover 3, an energy accumulator 4 and a limiting dustproof baffle 5;
the hinged thrust rod 1 with the sensor mainly comprises a piston 1-1 with a sealing component, a hinged connecting rod 1-2, a sensor assembly 1-3 and an input power connecting flange 1-4;
the limiting dustproof baffle 5 consists of a baffle 5-1, a dustproof seal 5-2 and a fastening component 5-3;
the damping valve cavity limiting end cover 3 consists of a limiting end cover 3-1 and a damping valve seat 3-2;
firstly, connecting and fixing a piston 1-1 with a sealing component with a hinged connecting rod 1-2, screwing a sensor assembly 1-3 to a corresponding position of the hinged connecting rod 1-2 through a bolt and fastening; the baffle 5-1 with the dustproof seal 5-2 is sleeved into the hinged connecting rod 1-2, and the input power connecting flange 1-4 and the sensor assembly 1-3 are screwed and fastened through bolts. Then the hinged thrust rod 1 with the sensor is arranged in the power cylinder 2 placed at a fixed position, and the baffle 5-1 is fixed on the outer end surface of the power cylinder 2 by the fastening assembly 5-3. Then the charged energy accumulator 4 is arranged at a corresponding interface at the rear end of the power oil cylinder 2 and is screwed and fixed, the power oil cylinder 2 is erected, a rodless cavity at the rear end of the oil cylinder is filled with oil to a required amount, then the tested damping valve is arranged at a corresponding position at the rear end of the power oil cylinder 2, a damping valve seat 3-2 can be adopted for adaptive installation in the damping cavity installation process to ensure that the damping valve is smoothly arranged in the damping valve cavity, and finally a limiting end cover 3-1 is used for sealing the bottom of the power oil cylinder 2 and realizing limiting and fixing of the damping valve.
And an oil outlet of the damping valve is communicated with an oil inlet of the energy accumulator.
The piston with the sealing assembly bears main pressure when the oil of the power oil cylinder is compressed, and the sealing effect on the oil of the power oil cylinder is realized through the sealing elements arranged on the periphery of the piston; meanwhile, the hinged connecting rod is used as a main transmission piece for power input of the power oil cylinder and is connected with a piston with a sealing assembly, so that power input from the outside is converted into acting force for compressing hydraulic oil; the sensor assembly is used as data output equipment in the process of the damping test device and is respectively connected and fixed with the hinged connecting rod and the input power connecting flange through a connecting bolt equipped by the sensor assembly, an external input power end is connected with the input power connecting flange of the test device to provide power for the test device, and acting force and displacement parameters in the power input process are transmitted in real time and monitored and analyzed through the sensor assembly.
The power oil cylinder is used as a working main body of the damping test device, and hydraulic oil is filled in the power oil cylinder, so that a simulation working condition is provided for the test of the damping valve. The power oil cylinder comprises an oil cylinder matched with a piston with a sealing assembly, a damping test cavity, a closed interface, an energy accumulator interface, a mounting flange and a supporting rib structure, and the requirements of the power oil cylinder on functions, structural strength and operation convenience can be met.
The limiting end cover is used as a position limiting and adjusting structure when the damping valve is installed in the damping valve cavity of the power cylinder, is of a structure with a sealing assembly and connecting threads, is matched with corresponding internal threads at the bottom of the power cylinder and controls the screwing amount, and therefore limiting of the damping valve is achieved. The damping valve seat is mainly used for mounting damping valves which are matched with different appearance structures in the power cylinder, when the damping valves are in different valve structures such as round valve structures, rectangular valve structures and the like, the damping valve seats can be used as matching parts to be assembled and matched, and then the damping valve seats matched with the damping valves are mounted in the power cylinder.
The energy accumulator is arranged on a corresponding interface of the power cylinder through the interface and is used as a device for acting the damping restoring force in the damping test process. After oil of the power oil cylinder is subjected to the input force of the thrust rod and is applied to the oil cavity by the piston, high-pressure oil is pressed into the energy accumulator through damping, and when the external input load stops compressing, high-pressure nitrogen in the energy accumulator compresses the oil, so that the damping return stroke test is realized.
The baffle is mainly used as a limiting structure for the movement of the piston, so that the hinged thrust rod with the sensor is prevented from being separated from the power cylinder in the return process; the dustproof seal is arranged in the groove of the baffle and is matched with the hinged connecting rod to realize sealing, so that external dust is prevented from entering the power cylinder; the fastening assembly secures the flapper to the power cylinder.
The working principle is as follows: the input power acts on the hinged thrust rod 1 with the sensor and runs in a low-frequency state, whether the damping valve is through-flow is checked, if the damping valve is normal, the oil can open the check valve of the damping valve and flows into the energy accumulator, when the input power is 0, the oil is supplied to the damping valve through the energy accumulator 4, and if the damping valve works normally, the oil flows into the oil cylinder; meanwhile, the sensor is debugged, and after the output data is observed to be stable, the action zero point of the sensor is set, so that the test of the damping valve can be prepared.
(1) The piston 1-1 with the sealing assembly bears main pressure when the oil of the power cylinder is compressed, and the sealing effect on the oil of the power cylinder is realized through a sealing element arranged on the periphery of the piston;
(2) the hinged connecting rod 1-2 is used as a main transmission piece for power input of the power cylinder and is connected with the piston 1-1 with the sealing assembly to convert power input from the outside into acting force for compressing hydraulic oil;
(3) the sensor assembly 1-3 is used as data output equipment in the process of a damping test device, the sensor assembly is respectively connected and fixed with the hinged connecting rod 1-2 and the input power connecting flange 1-4 through connecting bolts which are arranged on the sensor assembly, an external input power end is connected with the input power connecting flange 1-4 of the test device through the connecting bolts, power is provided for the test device, and acting force and displacement parameters in the power input process are transmitted in real time and monitored and analyzed through the sensor assembly 1-3.
The utility model discloses fully borrow for reference the operating principle of hydro-pneumatic spring and the operating mode requirement after, adopt the hydro-cylinder that can realize oil pressure power, atmospheric pressure energy storage and reaction force, hydraulic fluid port simultaneously sealed and position control function as main part working part, set for reasonable oil liquid volume, high-pressure gas volume and action stroke value according to back work requirement, recycle the sensor to the real time monitoring of test data, through the effect of external input power at last, realize the passive test of back of integrated form. The test device has the advantages of convenient and quick installation of parts, simple operation, wide application range and good application in the technical field of hydraulic part test of the action system of the tracked armored vehicle.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be considered as the protection scope of the present invention.
Claims (10)
1. The utility model provides a hydro-pneumatic spring damping testing arrangement which characterized in that: the device mainly comprises a hinged thrust rod with a sensor, a power oil cylinder, a damping valve cavity limiting end cover, an energy accumulator and a limiting dustproof baffle; the limiting dustproof baffle is fixed at the front end of the power oil cylinder, and the limiting end cover of the damping valve cavity limits a damping valve at the rear part of the power oil cylinder; the hinged thrust rod with the sensor slides in the power cylinder; the energy accumulator is arranged at the rear end of the power cylinder, and an oil port of the damping valve is communicated with an oil port of the energy accumulator.
2. The hydro-pneumatic spring damping test device of claim 1, wherein: the hinged thrust rod with the sensor mainly comprises a piston with a sealing component, a hinged connecting rod, a sensor assembly and an input power connecting flange; the piston with the sealing component is fixed at the rear end of the hinged connecting rod, and the input power connecting flange and the sensor assembly are fixed at the front end of the hinged connecting rod.
3. The hydro-pneumatic spring damping test device of claim 2, wherein: the power cylinder is filled with hydraulic oil.
4. The hydro-pneumatic spring damping test device of claim 2, wherein: the damping valve cavity limiting end cover comprises a damping valve seat, and the damping valve seat is used for being matched with damping valves with different appearance structures to be installed in the power oil cylinder.
5. The hydro-pneumatic spring damping test device of claim 2, wherein: the limiting dustproof baffle comprises a baffle; the baffle with the dustproof seal is sleeved in the hinged connecting rod and fixed on the power cylinder.
6. The hydro-pneumatic spring damping test device of claim 5, wherein: after oil of the power oil cylinder is subjected to input force of the hinged thrust rod and is applied to the oil cavity by the piston, high-pressure oil is pressed into the energy accumulator through the damping valve, and when the external input load stops compressing, high-pressure nitrogen in the energy accumulator compresses the oil, so that the damping return stroke test is realized.
7. The hydro-pneumatic spring damping test device of claim 5, wherein: the dust seal is mounted in the groove of the baffle and is matched with the hinged connecting rod.
8. The hydro-pneumatic spring damping test device of claim 5, wherein: when the input power is 0, oil is supplied to the damping valve through the accumulator.
9. The hydro-pneumatic spring damping test device of claim 5, wherein: the damping valve comprises two check valves connected in parallel.
10. The hydro-pneumatic spring damping test device of claim 5, wherein: the sensor is used for testing pressure and displacement data in the working process of the damping valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022674950.6U CN213658235U (en) | 2020-11-18 | 2020-11-18 | Hydro-pneumatic spring damping testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022674950.6U CN213658235U (en) | 2020-11-18 | 2020-11-18 | Hydro-pneumatic spring damping testing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213658235U true CN213658235U (en) | 2021-07-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022674950.6U Active CN213658235U (en) | 2020-11-18 | 2020-11-18 | Hydro-pneumatic spring damping testing device |
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| Country | Link |
|---|---|
| CN (1) | CN213658235U (en) |
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- 2020-11-18 CN CN202022674950.6U patent/CN213658235U/en active Active
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