CN214224826U - Fatigue test bench for mechanical seal elastic element - Google Patents
Fatigue test bench for mechanical seal elastic element Download PDFInfo
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- CN214224826U CN214224826U CN202120034842.4U CN202120034842U CN214224826U CN 214224826 U CN214224826 U CN 214224826U CN 202120034842 U CN202120034842 U CN 202120034842U CN 214224826 U CN214224826 U CN 214224826U
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- crank
- ball screw
- crankshaft
- mechanical seal
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- 238000009661 fatigue test Methods 0.000 title claims abstract description 17
- 238000012360 testing method Methods 0.000 claims abstract description 13
- 238000006073 displacement reaction Methods 0.000 claims description 8
- 230000033001 locomotion Effects 0.000 claims description 6
- 230000002457 bidirectional effect Effects 0.000 claims 1
- 230000005540 biological transmission Effects 0.000 claims 1
- 238000009825 accumulation Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The utility model provides a fatigue test bench for mechanical seal elastic elements, which comprises a clamping centering device and a vertical reciprocating loading device, wherein the clamping centering device comprises a ball screw, a nut seat, a V-shaped block, a guide rail and a bottom frame; the V-shaped block is connected with the ball screw; the guide rails are horizontally arranged at two ends of the ball screw; the vertical reciprocating loading device comprises a three-phase asynchronous motor, a crank-slider mechanism, a supporting part and a self-made pressure head; the crank block mechanism is fixed on a crankshaft and is placed in a box body of an outer cover at the upper end of the test device; the supporting part comprises a bearing seat and a sleeve supporting column, wherein the bearing seat and the sleeve supporting column are used for being connected with a crankshaft of the slider-crank mechanism, one end of the self-made pressure head is connected with the slider-crank mechanism, and the other end of the self-made pressure head is connected with the pressure sensor. The utility model discloses can make things convenient for the tired accumulation of test bellows to make the test result more accurate.
Description
Technical Field
The utility model belongs to measurement test device field, concretely relates to mechanical seal elastic element's fatigue test bench.
Background
In order to measure the fatigue life of the mechanical seal elastic element, which is generally operated under the condition of the coexistence of high-frequency vibration and stress relaxation, data measurement is usually performed by applying a heavy load to the mechanical seal elastic element, and the fatigue life of the elastic element is analyzed. That is, in many cases, when measuring the fatigue life of the mechanical seal elastic element, a fatigue test is performed by adding a high-frequency reciprocating motion, but the reciprocating mechanism is generally expensive and complicated in structure. The spring elements in the mechanical seal are of different sizes and need to be lightly touched when clamping centering, otherwise clamping damage is easily caused. Many of the mechanical seal spring fatigue test experimental devices of today do not take these effects into account.
Therefore, it is a problem to be solved by those skilled in the art to develop an experimental device capable of performing fatigue testing of mechanical seal elastic elements.
In order to solve the problem, the utility model discloses a mechanical seal elastic element's fatigue test device can effectively solve above-mentioned problem.
SUMMERY OF THE UTILITY MODEL
In order to achieve the above object, the utility model provides a following technical scheme:
the fatigue test bed for the mechanical seal elastic element comprises a clamping centering device and a vertical reciprocating loading device, wherein the clamping centering device comprises a ball screw, a nut seat, a V-shaped block, a guide rail and a bottom frame; the V-shaped block is connected with two nut seats on the ball screw through bolts and fixed on the nut seats; the slide block guide rails are arranged at the two horizontal ends of the ball screw, and the two V-shaped blocks are also connected with the slide blocks on the guide rails respectively through bolts; the bottom frame is arranged below the workbench;
the vertical reciprocating loading device comprises a three-phase asynchronous motor, a crank-slider mechanism, a supporting part and a self-made pressure head; the three-phase asynchronous motor is arranged at the upper end in the outer cover; the crank sliding block mechanism is fixed on a crankshaft and is placed in a box body of an outer cover at the upper end of the test device; the supporting part comprises a bearing seat and a sleeve supporting column, the bearing seat is used for connecting a crankshaft of the slider-crank mechanism and is fixed at the left end of the housing box body, the right end of the crankshaft is connected with the three-phase asynchronous motor and is fixed on the box body, the sleeve supporting column fixes the piston sleeve on the upper bottom plate and fixes the reciprocating slider-crank mechanism in the housing; one end of the self-made pressure head is connected with the slider-crank mechanism, the other end of the self-made pressure head is connected with the pressure sensor, and the laser displacement sensor is fixed at the bottom of the upper base plate.
Preferably, the ball screw uses a positive and negative spiral linear guide rail screw, and the end part is also provided with a rocker in a matching way.
Preferably, the slide block guide rail adopts a linear slide block guide rail mechanism and is fixed on the bottom frame.
Preferably, the three-phase asynchronous motor is fixed on the right side of the outer cover.
Preferably, the working surface is fixed by four cylindrical support columns, and the cylindrical support columns are fixed on the bottom frame, penetrate through and are fixed on the upper bottom plate.
Preferably, the connecting rod is connected with the crank through a crankshaft, and the bottom of the connecting rod is connected with the piston.
Compared with the prior art, the utility model, following beneficial effect has:
1. the utility model discloses can test the fatigue damage of elastic element in mechanical seal, the influence to test data of the tight heart mode of clamp has been considered to make measuring result more accurate.
2. By adopting the design of the I-shaped bottom frame, the material cost is saved, and the mechanical strength requirement of the working plane is improved.
3. The vertical reciprocating loading device is adopted, the shape is simple, the manufacturing is easy, and the requirement of test pressure can be met.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a schematic structural view of a clamping centering device according to the present invention;
fig. 3 is a schematic structural diagram of the vertical reciprocating loading device of the present invention.
In the figure: 1-a housing; 2-cylindrical support columns; 3-vertical reciprocating loading device; 4-a laser displacement sensor; 5-a pressure sensor; 6-clamping centering device; 7-a bottom frame; 8-V-shaped blocks; 9-ball screw; 10-a rocker; 11-a nut seat; 12-a slider guide; 13-reinforcing ribs; 14-a crankshaft; 15-three-phase asynchronous motor; 16-a connecting rod; 17-a crank; 18-a bearing seat; 19-a piston; 20-a piston sleeve; 21-a sleeve support column; 22-self-made pressure head
Detailed Description
The present invention will be described in further detail with reference to the following embodiments of the drawings.
The utility model provides a mechanical seal elastic element's fatigue test bench structure is shown in fig. 1-3, including test bench body frame, set up the clamp on the test bench body and put and carry out the device with reciprocating perpendicularly to the heart device.
In the embodiment, the test bed integral frame comprises an upper base plate connected with an outer cover 1, and four cylindrical support columns 2 are used for fixing a working surface which sequentially penetrates through the upper base plate to a bottom frame 7 from top to bottom; the laser displacement sensor 4 is positioned on the upper bottom plate; a clamping centering device is placed on the working surface, and a bottom frame 7 structure is designed below the working surface.
The vertical reciprocating loading device in the embodiment comprises a crank 17, a connecting rod 16, a piston 19, a piston sleeve 20, a three-phase asynchronous motor 15, a supporting part and a self-made pressure head 22; a piston 19 which does reciprocating vertical motion is positioned below a bearing seat 18 and a crankshaft 14 fixed by a three-phase asynchronous motor 15; the upper end of the piston 19 is connected with a connecting rod 16 by a crank 17; the pressure plate is positioned below the pressure sensor 5; the home-made pressure head 22 is located above the pressure sensor 5. The three-phase asynchronous motor is positioned on the right side of the upper part of the outer cover 1 and is connected with the outer cover; the three-phase asynchronous motor 15 is connected with a bearing seat 18 by a crankshaft 14, and the bearing seat 18 is fixed on the left side of the upper part of the outer cover 1; the crank 17 and the connecting rod 16 are connected to the middle of the crankshaft 14; the connecting rod 16 is connected with the crank 17 through a shaft; the piston 19 is connected with the connecting rod 16 through a connecting shaft; the piston sleeve 20 is positioned outside the piston 19 and is fixed on the upper bottom plate by a sleeve supporting column 21; the connected homemade pressure head 22 is connected with the pressure sensor 5; the pressure sensor 5 is connected with a pressure plate below.
The clamping centering device in the embodiment comprises a ball screw 9, a nut seat 11, a V-shaped block 8, a slide block guide rail 12 and a bottom frame 7. The ball screw 9 is a positive and negative spiral linear guide rail screw, is horizontally arranged on the working surface of the bottom frame 7, and the end part of the ball screw is also provided with a rocker 10 in a matching way; the number of the nut seats 11 is two, the nut seats are respectively installed at two ends of the ball screw 9 in a matching mode, and relative motion is achieved through rotation of the ball screw 9; the number of the V-shaped blocks 8 is two, and the two V-shaped blocks are respectively connected above the two nut seats 11; the number of the slide block guide rails 12 is two, and the two slide block guide rails are respectively positioned at two sides of the ball screw 9; the two ends of the bottom of the V-shaped block 8 are respectively connected with the two sliding blocks on the sliding block guide rail 12 through bolts.
The working process is as follows:
the ball screw 9 in the clamping centering device uses a positive and negative spiral linear guide rail screw, and adjusts the position of a nut seat 11 through a rocker 10 to perform double motions of centering and clamping on a mechanical sealing elastic element; the two ends of the V-shaped block 8 are connected with a slide block guide rail 12 through bolts, and the rocker is rocked to enable the V-shaped block 8 and the slide block to slide inwards together along the guide rail, so that the middle part can slightly touch the elastic element and can be clamped; a linear slide block guide rail mechanism is adopted, the V-shaped block 8 and a nut seat 11 on the ball screw 9 are fixedly connected through bolts, and the slide block guide rail 12 can avoid the inclination phenomenon of the V-shaped block 8 in the process of clamping and centering, so that the pressure requirement of applying heavy load and the requirement of accurate motion track of the V-shaped block 8 in the experimental process can be met; the bottom frame 7 is made of a material with high strength and good plasticity and toughness, the material is saved, the reinforcing ribs 13 with I-shaped structures are adopted, the material use cost is saved, the strengthening treatment on the mechanical analysis is carried out on the working plane, and the requirement on the working pressure is met.
In the three-phase asynchronous motor 15 in the embodiment, the wiring mode of the stator winding is changed by adopting a pole-changing logarithm speed regulation method, so that the number of pole pairs of the stator of the motor is changed, the speed regulation treatment is achieved, the load application under different frequencies is realized by the vertical reciprocating load application device, the condition of the fatigue life of the elastic element is intuitively reflected under the impact of a simulated load, and the interlocking can be carried out when an emergency occurs, so that the harm to users is effectively avoided; the crank slider mechanism is connected with a three-phase asynchronous motor 15 by a crankshaft 14 and drives a crank 17 to rotate, so that a connecting rod 16 drives a piston 19 to vertically reciprocate; the supporting part is connected with the outer cover 1 and the crankshaft 14 through a bearing seat 18, the crankshaft 14 can be fixed while rotating, a piston 19 is sleeved and fixed on an upper base plate through a sleeve supporting column 21 to prevent the piston sleeve 20 from vertically moving along with the piston 19 and generating displacement in the vertical direction, and a vertical reciprocating loading device is fixed in the outer cover 1 and connected with a three-phase asynchronous motor 15, so that the rotation of a crank-slider mechanism is realized; the self-made pressure head 22 is connected with the crank-slider mechanism and vertically reciprocates up and down along with the crank-slider mechanism, and the other end of the crank-slider mechanism is connected with the pressure sensor 5, so that the self-made pressure head is favorable for accurately measuring applied pressure data under the condition of applying heavy load to the elastic element.
When the mechanical seal elastic element bears an applied load, the data size of the certain amount of load borne by the mechanical seal elastic element is an important data support in a fatigue test of the mechanical seal elastic element, and the data size of the load is measured by using the pressure sensor 5.
After the mechanical seal elastic element bears applied load, the elastic element generates a certain amount of displacement, and the data is also important data support in the fatigue test. The displacement data size is measured using the laser displacement sensor 4.
The technical means disclosed by the scheme of the utility model is not limited to the technical means disclosed by the technical means, but also comprises the technical scheme consisting of the equivalent replacement of the technical features. The present invention is not to be considered as the best thing, and belongs to the common general knowledge of the technicians in the field.
Claims (5)
1. The utility model provides a fatigue test bench of mechanical seal elastic element which characterized in that: the test bed comprises a clamping centering device (6) and a vertical reciprocating loading device (3), wherein the clamping centering device (6) comprises a ball screw (9), a nut seat (11), a V-shaped block (8), a guide rail (12) and a bottom frame (7), the ball screw (9) is arranged on a working plane and positioned above the bottom frame (7), the nut seats (11) are respectively arranged at two ends of the ball screw (9), and bidirectional screw transmission is performed on the ball screw (9); the V-shaped block (8) is connected with two nut seats (11) on the ball screw (9) through bolts and fixed on the nut seats (11); the guide rails (12) are horizontally arranged at two ends of the ball screw (9), and the two V-shaped blocks (8) are respectively connected with the sliding blocks on the guide rails (12) through bolts; the bottom frame (7) is arranged below the workbench;
the vertical reciprocating loading device comprises a three-phase asynchronous motor (15), a crank-slider mechanism, a supporting part and a self-made pressure head (22); the three-phase asynchronous motor (15) is arranged at the upper end in the outer cover (1); the crank sliding block mechanism is fixed on a crankshaft (14) and is placed in a box body of an outer cover (1) at the upper end of the test device; the supporting part comprises a bearing seat (18) and a sleeve supporting column (21), the bearing seat (18) is used for being connected with a crankshaft (14) of the slider-crank mechanism, the bearing seat (18) is fixed at the left end of a box body of the outer cover (1), the right end of the crankshaft (14) is connected with a three-phase asynchronous motor (15) and fixed on the box body, the sleeve supporting column (21) fixes a piston sleeve (20) on the upper bottom plate, and the slider-crank mechanism is fixed in the outer cover (1); one end of the self-made pressure head (22) is connected with a crank slider mechanism, the other end of the self-made pressure head is connected with a pressure sensor (5), a laser displacement sensor (4) is fixed at the bottom of the upper base plate, and a piston (19) which does reciprocating vertical motion is positioned below a crankshaft (14) which is fixed by a bearing seat (18) and a three-phase asynchronous motor (15); the upper end of the piston (19) is connected by a crank (17) and a connecting rod (16); the three-phase asynchronous motor (15) is connected with a bearing seat (18) through a crankshaft (14), and the bearing seat (18) is fixed on the left side of the upper part of the outer cover (1); the crank (17) and the connecting rod (16) are connected to the middle of the crankshaft (14); the connecting rod (16) is connected to the crank (17) through a shaft; the piston (19) is connected with the connecting rod (16) through a connecting shaft; the piston sleeve (20) is positioned outside the piston (19) and is fixed on the upper bottom plate by a sleeve supporting column (21).
2. A fatigue test stand for mechanical seal elastic members according to claim 1, characterized in that: the ball screw (9) uses a positive and negative spiral linear guide rail screw, and the end part is also provided with a rocker (10) in a matching way.
3. A fatigue test stand for mechanical seal elastic members according to claim 1, characterized in that: the guide rail (12) adopts a linear slide block guide rail mechanism and is fixed on the bottom frame (7).
4. A fatigue test stand for mechanical seal elastic members according to claim 1, characterized in that: the three-phase asynchronous motor (15) is fixed on the right side of the outer cover (1).
5. A fatigue test stand for mechanical seal elastic members according to claim 1, characterized in that: the working face is fixed by four cylindrical supporting columns (2), and the cylindrical supporting columns (2) are fixed on the bottom frame (7) and penetrate through and are fixed on the upper bottom plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120034842.4U CN214224826U (en) | 2021-01-07 | 2021-01-07 | Fatigue test bench for mechanical seal elastic element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120034842.4U CN214224826U (en) | 2021-01-07 | 2021-01-07 | Fatigue test bench for mechanical seal elastic element |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214224826U true CN214224826U (en) | 2021-09-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120034842.4U Expired - Fee Related CN214224826U (en) | 2021-01-07 | 2021-01-07 | Fatigue test bench for mechanical seal elastic element |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214224826U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113866014A (en) * | 2021-09-28 | 2021-12-31 | 南京林业大学 | Automatic roll-changing bending tester |
-
2021
- 2021-01-07 CN CN202120034842.4U patent/CN214224826U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113866014A (en) * | 2021-09-28 | 2021-12-31 | 南京林业大学 | Automatic roll-changing bending tester |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210917 |