CN216900027U

CN216900027U - Endurance test device

Info

Publication number: CN216900027U
Application number: CN202220373250.XU
Authority: CN
Inventors: 杨安洪
Original assignee: CHONGQING YUJIANG DIE-CASTING CO LTD
Current assignee: Chongqing Yujiang Die Casting Co.,Ltd.
Priority date: 2022-02-23
Filing date: 2022-02-23
Publication date: 2022-07-05
Anticipated expiration: 2032-02-23

Abstract

Relate to part test device technical field, specifically be an endurance test device, including the proof box, be provided with the test bench in the proof box, be provided with a plurality of anchor clamps on the test bench, anchor clamps are including being used for the locating component for the work piece location, the locating component top is fixed with annular piston, the piston cover is established outside the work piece, the piston can contact with the retaining ring of installing at the retaining ring inslot of work piece, form the pressure chamber between piston and the locating component, the pressure chamber intercommunication has the oil duct, the piston top is provided with the determine module who is used for detecting work piece deformation volume, the determine module electricity is connected with the controller, the controller electricity is connected with the alarm, the controller is used for storage time signal and experimental number of times signal. This scheme of adoption can real-time supervision work piece the deformation volume, can be timely know the work piece whether fracture, need not other parts of supporting installation, the expense is low, and can incessant experiment in succession, and test cycle is short, very big improvement test efficiency, reduced test cost.

Description

Endurance test device

Technical Field

Relate to part test device technical field, specifically be an endurance test device.

Background

The retainer groove 16 of a gearbox part cylinder E (shown in figure 1) is easy to break, so that a durability test needs to be carried out in actual use, and the test needs to repeatedly apply impact pressure of 2-28Bar for 130 ten thousand times to the retainer groove so as to test whether the retainer groove is broken or not.

The prior art is with the part assembly back of reality, simulation operating condition, judges through the oil pressure decay whether the retainer ring groove department breaks, and the part just can break for a long time under operating condition, therefore this kind of test mode cycle is long, and with the part simulation operating condition of reality, the expense is higher. In addition, the mode needs to be manually identified and judged whether the retainer ring groove is broken or not, the experience requirement on personnel is high, the personnel cannot find the breakage of the part at the first time, and the timeliness and the accuracy of the test are not high.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a durability test device to solve the problems of long period, high cost and low timeliness of the conventional test mode.

In order to achieve the purpose, the utility model provides the following technical scheme:

the utility model provides an endurance test device, the test chamber comprises a test chamber, be provided with the test bench in the test chamber, be provided with a plurality of anchor clamps on the test bench, anchor clamps are including being used for the locating component for the work piece location, the locating component top is fixed with annular piston, the piston cover is established outside the work piece, the piston can contact with the retaining ring of installing at the retaining ring inslot of work piece, form the pressure chamber between piston and the locating component, the pressure chamber intercommunication has the oil duct, the piston top is provided with the determine module that is used for detecting the work piece deformation volume, the determine module electricity is connected with the controller, the controller electricity is connected with the alarm, the controller is used for storage time signal and experimental number of times signal.

The principle and the beneficial effects of the scheme are as follows:

the test box is used for installing the clamp, the clamp is used for fixing a workpiece, the positioning assembly is used for positioning the workpiece, the piston is sleeved outside the workpiece after the workpiece is positioned, the check ring is installed in the check ring groove of the workpiece, hydraulic oil is pumped into the check ring from the oil duct repeatedly, the hydraulic oil enters the pressure cavity repeatedly to do work on the piston, the piston impacts the check ring repeatedly, and the check ring impacts the check ring groove repeatedly, so that the working condition of the workpiece is simulated. The deformation quantity of the workpiece is monitored in real time by the detection assembly in the whole process, the test times and time are recorded in real time by the controller, and when the deformation quantity of the workpiece reaches a preset threshold value, namely when the workpiece is broken, the controller controls the alarm to give an alarm. By adopting the scheme, the deformation quantity of the workpiece can be monitored in real time, whether the workpiece is broken or not can be timely known, other parts do not need to be installed in a matched manner, the cost is low, continuous and uninterrupted test can be carried out, the test period is short, the test efficiency is greatly improved, and the test cost is reduced.

Further, the piston top is fixed with the protective cover, and the detecting component includes displacement sensor and gasket, and displacement sensor is connected with the controller electricity, and displacement sensor's quantity is a plurality of, and a plurality of displacement sensor equipartitions are covered at the protective cover, and displacement sensor and work piece homoenergetic all can contact with the gasket.

Has the advantages that: the plurality of displacement sensors are uniformly distributed on the protective cover, so that different positions of a workpiece can be detected, and the detection effect and accuracy are improved; the gasket is additionally arranged between the displacement sensor and the workpiece, so that the deformation of the workpiece can be detected by a plurality of displacement sensors.

Further, the top of the piston is recessed downward to form an escape groove.

Has the advantages that: the arrangement of the avoiding groove can avoid the direct contact of the piston and the gasket, so that the influence of the piston on the detection result of the displacement sensor is avoided.

Further, the number of the displacement sensors is three.

Has the advantages that: the three displacement sensors not only can achieve the detection effect, but also effectively save the cost and have good practicability.

Furthermore, the pressure cavity is annular, the cross section of the pressure cavity is triangular, the bottom of the triangle is attached to the workpiece, and the top of the triangle is far away from the workpiece.

Has the advantages that: so set up, pressure intracavity wall is the inclined plane, can play the effect of a buffering when hydraulic oil gets into the pressure chamber, can the effectual life who prolongs piston and cylinder body.

Further, the positioning assembly comprises an annular cushion cover, an oil duct main shaft and an annular cylinder body, the piston is fixed in the cylinder body, a space for vertical insertion of a workpiece is formed between the cylinder body and the oil duct main shaft and between the cushion cover and the oil duct main shaft, the space inside the workpiece is used for inserting the oil duct main shaft, the oil duct is arranged in the oil duct main shaft and communicated with a through hole in the workpiece, the through hole in the workpiece can be communicated with a pressure cavity, the oil duct main shaft comprises an oil duct lower shaft and an oil duct upper shaft, and the oil duct lower shaft and the oil duct upper shaft are detachably connected in the axial direction.

Has the advantages that: the workpiece is vertically sleeved outside the oil duct main shaft, the upper part of the workpiece is inserted between the cylinder body and the oil duct main shaft, and the lower part of the workpiece is inserted between the cushion cover and the oil duct main shaft, so that the positioning of the workpiece can be realized; because the size in the upper part of the workpiece is slightly larger than that in the lower part of the workpiece, the oil duct main shaft is provided with a split type oil duct upper shaft and an oil duct lower shaft, so that the disassembly and the assembly are more convenient.

Furthermore, the oil duct is communicated with an oil pipe interface, a pressure sensor is installed on the oil pipe interface, and the pressure sensor is electrically connected with the controller.

Has the advantages that: the oil pipe interface is used for external oil pump, and pressure sensor is used for detecting the oil pressure, and pressure sensor is connected with the controller electricity, makes things convenient for real-time recording oil pressure.

Further, the oil pipe interface is installed at the bottom of the test bed.

Has the advantages that: the oil pipe interface is arranged below the test bed, oil leakage can be reduced, leakage oil is prevented from polluting the test bed, meanwhile, the oil pipe interface is prevented from influencing workpiece installation, the oil pipe interface is arranged below the test bed and cannot be frequently touched, the oil pipe interface is prevented from being damaged, and the service life of the oil pipe interface is prolonged.

Further, be provided with the accumulator on the test bench, the test bench below is provided with the waste oil and collects the box, and the intercommunication has the pipeline between accumulator and the waste oil collection box.

Has the advantages that: the recycle bin is used for retrieving the waste oil that leaks on the test bench, and the waste oil of retrieving can collect the waste oil through the pipeline in collecting the box, and convenient the collection gets up waste oil recovery, has practiced thrift resource and cost.

Further, a placing groove is arranged on the inner wall of the test box.

Has the advantages that: when not using, piston, cylinder body, protective cover and displacement sensor etc. can place on the standing groove, realize the function of accomodating, improve the pleasing to the eye degree of equipment, also can avoid above-mentioned parts to lose simultaneously, take when convenient next use.

Drawings

FIG. 1 is an isometric view of a workpiece according to the present invention;

FIG. 2 is an isometric view of the present invention;

FIG. 3 is an isometric view of the clamp of FIG. 2;

fig. 4 is a sectional view a-a of fig. 3.

Detailed Description

The following is further detailed by way of specific embodiments:

reference numerals in the drawings of the specification include: the device comprises a through hole 1, a workpiece 2, a test box 3, a clamp 4, a test bed 5, an oil tank 6, a waste oil collecting box 7, a displacement sensor 8, a protective cover 9, a cylinder body 10, a cushion cover 11, a sealing ring 12, an avoiding groove 13, an oil duct upper shaft 14, a gasket 15, a baffle ring groove 16, a piston 17, a pressure cavity 18, an upper oil duct 19, a lower oil duct 20 and an oil duct lower shaft 21.

Example (b):

as shown in fig. 1, the endurance testing apparatus includes a testing box 3, a testing platform 5 is installed in the testing box 3, a plurality of clamps 4 are installed on the testing platform 5, and the number of the clamps 4 is two in this embodiment. A placing groove (not shown in the figure) is fixed on the inner wall of the test box 3 through bolts, a waste oil collecting box 7 is installed below the test bed 5, a collecting groove (not shown in the figure) is formed in the periphery of the surface of the test bed 5, and the collecting groove is communicated with the waste oil collecting box 7 through a pipeline.

Referring to fig. 3 and 4, the fixture 4 includes a positioning assembly, an annular piston 17, a detection assembly and a circular protective cover 9, the positioning assembly includes an annular cushion cover 11, an oil passage main shaft and an annular cylinder 10, and the detection assembly includes a displacement sensor 8 and a circular gasket 15. The oil duct main shaft is used for being inserted into the workpiece 2 to seal the inside of the workpiece 2, and comprises an oil duct upper shaft 14 and an oil duct lower shaft 21, and the oil duct upper shaft 14 is clamped at the top of the oil duct lower shaft 21 along the axis through a clamping bulge to form a complete shaft. In order to improve the sealing performance inside the workpiece 2, sealing rings 12 are fixed on the outer walls of the oil duct upper shaft 14 and the oil duct lower shaft 21, the sealing rings 12 are rubber rings, and the oil duct main shaft is tightly connected into the workpiece 2 through the deformation of the sealing rings 12, so that the connection stability and the sealing performance are improved.

A lower oil channel 20 is vertically arranged in the oil channel lower shaft 21, a T-shaped upper oil channel 19 is arranged in the oil channel upper shaft 14, the vertical part of the upper oil channel 19 is communicated with the lower oil channel 20, and two ends of the horizontal straight part of the upper oil channel 19 can be respectively communicated with the two through holes 1 on the workpiece 2. An oil pipe interface (not shown in the figure) is installed at the bottom of the test bed 5 and is communicated with the lower oil duct 20, a sealing ring 12 is also installed at the joint of the lower oil duct 20 and the oil pipe interface, a pressure sensor (not shown in the figure) is installed on the oil pipe interface and is electrically connected with a controller, the controller is a computer, and the controller is electrically connected with an alarm. An oil tank 6 and an oil pump are arranged below the test bed 5, the oil pump is communicated between the oil tank 6 and an oil pipe interface, and the oil pump is electrically connected with the controller.

The cushion cover 11 and the oil duct lower shaft 21 are fixed on the test bed 5 through bolts, the cushion cover 11 is sleeved outside the oil duct lower shaft 21, a space for inserting the lower portion of the workpiece 2 is formed between the oil duct lower shaft 21 and the cushion cover 11, and the cushion cover 11 is used for supporting the middle portion of the workpiece 2. The cylinder body 10 and the piston 17 are used for being sleeved outside the upper portion of the workpiece 2, the cylinder body 10 is used for pressing the middle portion of the workpiece 2, and a space for inserting the upper portion of the workpiece 2 is formed between the cylinder body 10 and the oil channel upper shaft 14. The cylinder body 10 is inside to sunken to form the holding tank that is used for holding piston 17, and piston 17 sealing connection is in the holding tank, and is concrete, and piston 17 periphery also joint has sealing washer 12, and the deformation through sealing washer 12 is with the sealed chucking of piston 17 in the holding tank. The bottom of the piston 17 is recessed upwards, the top of the cylinder 10 is recessed downwards to form a pressure chamber 18, the end surface of the pressure chamber 18 is triangular, and the pressure chamber 18 can be aligned with the through hole 1 on the workpiece 2. Piston 17 top undercut forms and dodges groove 13, the back is established on the oil duct main shaft to the vertical cover of work piece 2, at retaining ring groove 16 department installation retaining ring (with the supporting part of work piece 2), the retaining ring is located piston 17 center top, piston 17 can contact with the retaining ring, the lower part of work piece 2 is located between oil duct lower shaft 21 and the cushion cover 11, the top of work piece 2 is located and dodges groove 13 top, gasket 15 presses the top at work piece 2, work piece 2 fixes protective cover 9 at cylinder body 10 top through the bolt after the installation, simultaneously with the bolt with protective cover 9 and oil duct upper shaft 14 taut.

The displacement sensors 8 are fixed on the protective cover 9 through bolts, the number of the displacement sensors 8 in the embodiment is three, and the three displacement sensors 8 are arranged on the protective cover 9 in an annular array with the center of the array as the center of the protective cover 9. Three displacement sensors 8 can each be in contact with a pad 15, the displacement sensors 8 being electrically connected to the controller.

The specific implementation process is as follows:

the workpiece 2 is vertically sleeved on the oil duct lower shaft 21, and meanwhile, the lower part of the workpiece 2 is inserted into a gap between the cushion cover 11 and the oil duct lower shaft 21. When the oil duct lower shaft 21 is sleeved, the sealing ring 12 on the oil duct lower shaft 21 is extruded and deformed, so that the workpiece 2 can be smoothly sleeved on the oil duct lower shaft 21, and after the oil duct lower shaft is sleeved, the sealing ring 12 is restored to be deformed and tightly abuts against the inner wall of the workpiece 2, so that the workpiece 2 is tightly connected with the oil duct lower shaft 21.

After the sleeving, firstly sleeving the cylinder body 10 outside the upper part of the workpiece 2, and then installing the piston 17 in the cylinder body 10, so that the piston 17 is also sleeved outside the upper part of the workpiece 2, and the piston 17 and the cylinder body 10 are also tightly connected through the sealing ring 12; then, a retainer ring is installed in the retainer ring groove 16 of the workpiece 2, and the retainer ring is positioned above the middle part of the piston 17 after installation. After the installation is finished, the oil duct upper shaft 14 is clamped at the top of the oil duct lower shaft 21, the protective cover 9 is covered, the protective cover 9 is locked on the cylinder body 10 through bolts, and the protective cover 9 and the oil duct upper shaft 14 are tightened through the bolts, so that the installation of the workpiece 2 is finished. After the installation is completed, the two through holes 1 on the workpiece 2 are respectively communicated with two ends of the horizontal straight part of the upper oil channel 19, and meanwhile, the through holes 1 are also communicated with the pressure cavity 18.

After the installation is finished, the oil pump is started to pump oil repeatedly into the lower oil duct 20, hydraulic oil is pumped into the pressure cavity 18 through the lower oil duct 20 and the upper oil duct 19, the piston 17 is repeatedly impacted by the hydraulic oil, the retainer ring is repeatedly impacted by the piston 17, and the retainer ring repeatedly impacts the retainer ring groove 16, so that the work of the workpiece 2 is simulated. Deformation of the workpiece 2 is monitored in real time through the displacement sensors 8 in the simulation process, and deformation of the workpiece 2 is transmitted to the three displacement sensors 8 through the gaskets 15, so that the workpiece 2 is monitored comprehensively. In the monitoring process, the oil pressure (monitored by the pressure sensor in real time), the impact times and the test time are synchronously updated to the controller in real time for storage. When the deformation amount of the workpiece 2 reaches a preset fracture threshold value, the controller controls the oil pump to stop working, and controls the alarm to give an alarm to inform workers of stopping the test, so that the workpiece 2 can be taken down.

When the workpiece 2 is disassembled, the protective cover 9, the gasket 15, the piston 17, the cylinder body 10 and the oil channel upper shaft 14 are disassembled in sequence, and the disassembled devices can be placed on the placing groove, so that the components can be taken conveniently during subsequent use, and meanwhile, the components are prevented from being lost. According to the utility model, the oil pipe interface is arranged below the test bed 5, so that the oil pipe interface cannot be obstructed when the workpiece 2 is disassembled and assembled, the disassembly and the assembly are convenient, and the oil pipe interface is protected, and in addition, the oil pipe interface is arranged below the test bed 5, so that the phenomenon that the pressure relief oil is leaked on the test bed 5 to affect the appearance can be effectively avoided. Even there is the hydraulic oil that leaks, also can collect to collect in the groove to finally retrieve in waste oil collection box 7 through the pipeline, be used for the secondary use, resources are saved.

The utility model is adopted to carry out the endurance test on the workpiece 2, the actual workpiece 2 does not need to be assembled to simulate the working condition, the test cost is low, the whole test process can be continuously carried out, the test time length is greatly shortened, the test efficiency is improved, in addition, the oil pressure, the test time and the deformation quantity of the workpiece 2 are detected and recorded in real time, the worker can be informed by alarming at the first time when the workpiece 2 is broken, and the test accuracy and timeliness are high.

The foregoing is merely an example of the present invention and common general knowledge of known specific structures and features of the embodiments is not described herein in any greater detail. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.

Claims

1. A durability test device characterized in that: the testing device comprises a testing box, be provided with the test bench in the test bench, be provided with a plurality of anchor clamps on the test bench, anchor clamps are including being used for the locating component for the work piece location, the locating component top is fixed with annular piston, the piston cover is established outside the work piece, the piston can contact with the retaining ring of installing at the retaining ring inslot of work piece, form the pressure chamber between piston and the locating component, the pressure chamber intercommunication has the oil duct, the piston top is provided with the determine module that is used for detecting the work piece deformation volume, the determine module electricity is connected with the controller, the controller electricity is connected with the alarm, the controller is used for storage time signal and experimental number of times signal.

2. A durability test apparatus according to claim 1, wherein: the piston top is fixed with the protective cover, and the detecting component includes displacement sensor and gasket, and displacement sensor is connected with the controller electricity, and displacement sensor's quantity is a plurality of, and a plurality of displacement sensor equipartitions are covered at the protective cover, and displacement sensor and work piece homoenergetic all can contact with the gasket.

3. A durability test apparatus according to claim 2, wherein: the top of the piston is recessed downwards to form an avoiding groove.

4. A durability test apparatus according to claim 3, wherein: the number of displacement sensors is three.

5. A durability test apparatus according to claim 1, wherein: the pressure cavity is annular, the cross section of the pressure cavity is triangular, the bottom of the triangle is attached to the workpiece, and the top of the triangle is far away from the workpiece.

6. An endurance testing apparatus according to claim 5, wherein: the positioning assembly comprises an annular cushion cover, an oil duct main shaft and an annular cylinder body, a piston is fixed in the cylinder body, a space for vertically inserting a workpiece is formed between the cylinder body and the oil duct main shaft and between the cushion cover and the oil duct main shaft, the space inside the workpiece is used for inserting the oil duct main shaft, the oil duct is arranged in the oil duct main shaft and communicated with a through hole in the workpiece, the through hole in the workpiece can be communicated with a pressure cavity, the oil duct main shaft comprises an oil duct lower shaft and an oil duct upper shaft, and the oil duct lower shaft and the oil duct upper shaft are detachably connected in the axial direction.

7. A durability test apparatus according to any one of claims 1 to 6, wherein: the oil duct is communicated with an oil pipe interface, a pressure sensor is installed on the oil pipe interface, and the pressure sensor is electrically connected with the controller.

8. A durability test apparatus according to claim 7, wherein: the oil pipe interface is arranged at the bottom of the test bed.

9. A durability testing apparatus according to claim 8, wherein: be provided with the accumulator on the test bench, the test bench below is provided with the waste oil collection box, and the intercommunication has the pipeline between accumulator and the waste oil collection box.

10. A durability test apparatus according to claim 9, wherein: the inner wall of the test box is provided with a placing groove.