CN108168905B - Trolley test piece protection device - Google Patents
Trolley test piece protection device Download PDFInfo
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- CN108168905B CN108168905B CN201711442285.4A CN201711442285A CN108168905B CN 108168905 B CN108168905 B CN 108168905B CN 201711442285 A CN201711442285 A CN 201711442285A CN 108168905 B CN108168905 B CN 108168905B
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- piston
- test piece
- cylinder body
- vertical sliding
- sliding chamber
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M17/00—Testing of vehicles
- G01M17/007—Wheeled or endless-tracked vehicles
- G01M17/0078—Shock-testing of vehicles
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- General Physics & Mathematics (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention provides a trolley test piece protection device which comprises a test piece and a cylinder body, wherein the test piece and the cylinder body are installed on a trolley, an inner cylinder sleeve is arranged in the cylinder body, a first piston is arranged in the inner cylinder sleeve and connected with a piston rod, the piston rod extends out of the cylinder body and is connected with a baffle, a buffer block corresponding to the test piece is arranged on the baffle, an oil outlet and an oil inlet are arranged on the inner cylinder sleeve, the oil inlet and the oil outlet are located on the left side and the right side of. According to the invention, after the trolley impacts a rigid wall surface, the test piece can move in the opposite direction after being impacted, the cylinder head with the piston is mounted on the trolley behind the test piece, the test piece firstly impacts the buffer block and then pushes the first piston to move in the inner cylinder sleeve, then the movement of the first piston is slowed down through hydraulic oil arranged in the cylinder body, so that the potential energy of the test piece is slowed down to protect the test piece, and the hydraulic oil enters a cavity between the outer wall of the inner cylinder sleeve and the inner wall of the cylinder body from the oil outlet after being extruded by the first piston and then enters the inner cylinder sleeve from the oil inlet to form an oil loop.
Description
Technical Field
The invention relates to a protection device, in particular to a trolley test piece protection device.
Background
In car crash tests, in which a test instrument is sometimes mounted on a test carriage during a trolley test, the test instrument involves a large number of data lines, and the data lines and the test instrument are often moved back by a crash after the crash, and then the instrument and the data lines are damaged if no protective measures are taken.
Disclosure of Invention
The invention aims to solve the problem that the prior art has the defects, and provides a trolley test piece protection device which is convenient for protecting a test instrument and a data wire which are arranged on a test trolley.
In order to achieve the purpose, the invention adopts the following technical scheme: a trolley test piece protection device comprises a test piece and a cylinder body which are installed on a trolley, wherein an inner cylinder sleeve is arranged in the cylinder body, a first piston is arranged in the inner cylinder sleeve and connected with a piston rod, the piston rod extends out of the cylinder body to be connected with a baffle, a buffer block corresponding to the test piece is arranged on the baffle, an oil outlet and an oil inlet are formed in the inner cylinder sleeve, the oil inlet and the oil outlet are located on the left side and the right side of the piston, and hydraulic oil is filled in the cylinder body; the oil-out device is characterized in that a hollow shell with an air cavity is arranged on the cylinder body, a second piston is installed in the hollow shell, the second piston is connected with a connecting rod, a blocking plate located in the air cavity is arranged on the connecting rod, when the blocking plate is in contact with the cylinder body, the connecting rod penetrates through the cylinder body and stretches into the oil outlet but does not penetrate through the oil outlet, the air cavity is communicated with an air injection pipe connected to the baffle, and the air injection pipe is arranged right to a test piece.
Furthermore, a boss is arranged on the surface of the test piece corresponding to the buffer block, and a recess is arranged on the boss and matched with the buffer block.
Further, the air cavity is connected with an air pipe, a first vertical sliding cavity, a second vertical sliding cavity and a horizontal sliding cavity are arranged on the hollow shell, a third piston and a fourth piston which are matched with the first vertical sliding cavity and the second vertical sliding cavity are inserted into the first vertical sliding cavity and the second vertical sliding cavity, the third piston is fixedly connected with the fourth piston, the horizontal sliding cavity is communicated with the air pipe through the second vertical sliding cavity, and the fourth piston can open or cut off the communication between the second vertical sliding cavity and the air pipe when the second vertical sliding cavity moves up and down; the air injection pipe is matched with the horizontal sliding cavity, a circle of groove is arranged on the boss, and the air injection pipe corresponds to the groove.
Compared with the prior art, the invention has the following beneficial effects: according to the invention, after a trolley impacts a rigid wall surface, the test piece can move in the opposite direction of the driving direction after being impacted, the cylinder head with the piston is installed on the trolley behind the test piece, the test piece firstly impacts a buffer block, then pushes the first piston to move in the inner cylinder sleeve, then the movement of the first piston is slowed down through hydraulic oil arranged in the cylinder body, so that the potential energy of the test piece is slowed down to protect the test piece, and the hydraulic oil enters a cavity between the outer wall of the inner cylinder sleeve and the inner wall of the cylinder body from the oil outlet after being extruded by the first piston and then enters the inner cylinder sleeve from the oil inlet to form an oil loop.
Drawings
Fig. 1 is a schematic structural diagram of a trolley test piece protection device.
FIG. 2 is a top view of the boss of the present invention.
FIG. 3 is a side view of the boss of the present invention.
Detailed Description
The technical solution of the present invention is further explained with reference to the drawings and the embodiments.
The invention provides a trolley test piece protection device which comprises a test piece 2 and a cylinder body 3 which are arranged on a trolley 1, wherein the trolley test piece protection device comprises a base, a first clamping piece and a second clamping piece
A test instrument and a data line for measuring the collision test of the trolley 1 are arranged on the test piece 2, an inner cylinder sleeve 4 is arranged in the cylinder body 3, the inner cylinder sleeve 4 is a cylinder body, a first inner cavity is formed between the outer wall of the inner cylinder sleeve 4 and the inner wall of the cylinder body 3, the inner cylinder sleeve 4 is provided with a second inner cavity, a first piston 8 is arranged in the inner cylinder sleeve 4, the first piston 8 is connected with a piston rod 5, the piston rod 5 extends out of the cylinder body 3 and is connected with a baffle 6, a first through hole matched with the piston rod 5 is arranged on the cylinder body 3, the baffle 6 is provided with a buffer block 7 corresponding to the test piece 2, the inner cylinder sleeve 4 is provided with an oil outlet and an oil inlet 9, the first inner cavity is communicated with the second inner cavity through the oil outlet and the oil inlet 9, the oil inlet 9 and the oil outlet are positioned on the left side and the right side of the first piston 8, and hydraulic oil is filled in the cylinder body 3.
As a specific embodiment, a boss 12 is arranged on a surface of the test piece 2 corresponding to the buffer block 7, a recess 10 is arranged on the boss 12, the recess 10 is a horn-shaped recess, the buffer block 7 is directly located between the maximum diameter and the minimum diameter of the recess 10, and the recess 10 and the buffer block 7 are adapted to facilitate the buffer block 7 to be tightly clamped in the recess 10 in the process that the test piece 2 moves rightwards, so that the first piston 8 and the test piece 2 are on the same horizontal line.
For a specific embodiment, an empty shell with an air cavity 13 is arranged on the cylinder body 3, a second piston 14 is arranged in the empty shell, the second piston 14 is connected with a connecting rod 15, a second through hole is arranged on the empty shell, the connecting rod 15 is matched with the second through hole, the aperture of the second through hole is the same as the outer diameter of the connecting rod 15, the connecting rod 15 penetrates through the second through hole and extends into the first inner cavity, a blocking plate 16 positioned in the air cavity 13 is arranged on the connecting rod 15, the blocking plate 16 is fixedly connected to the connecting rod 15, the number of the connecting rods 15 is the same as that of the oil outlets, when the blocking plate 16 is in contact with the cylinder body 3, the connecting rod 15 penetrates through the cylinder body 3 and extends into the oil outlets but does not penetrate through the oil outlets, so that when the first piston 8 moves to the right side, hydraulic oil on the right side can smoothly push the connecting rod 15 to move upwards from a third through hole arranged on the inner cylinder sleeve 4 to The second piston 14 extrudes air upwards, the third perforation is positioned on the inner cylinder sleeve 4, corresponds to the second perforation and is matched with the connecting rod 15, the third perforation is positioned on the upper wall of the inner cylinder sleeve 4, the second perforation is positioned on the lower wall of the hollow shell, the air cavity 13 is connected with the air pipe 17, the hollow shell is provided with a first vertical sliding cavity, a second vertical sliding cavity and a horizontal sliding cavity 18, the first vertical sliding cavity and the second vertical sliding cavity are inserted with a third piston 21 and a fourth piston 23 which are matched with the first vertical sliding cavity and the second vertical sliding cavity, the third piston 21 is fixedly connected with the fourth piston 23, the horizontal sliding cavity 18 is communicated with the air pipe 17 through the second vertical sliding cavity, and the fourth piston 23 can open and cut off the communication between the second vertical sliding cavity and the air pipe 17 when the second vertical sliding cavity moves up and down, the baffle 6 is connected with an air injection pipe 19 matched with the horizontal sliding cavity 18, a circle of groove 11 is arranged on the boss 12, the air injection pipe 19 corresponds to the groove 11, the air cavity 13 is inflated and extruded through the air injection pipe 19 to push the second piston 14 to move downwards so as to enable the connecting rod 15 to extend into the oil outlet, then the fourth piston 23 is slid downwards to block the air pipe 17, the lower end of the third piston 21 is provided with a slope surface 22, when the air injection pipe 19 slides rightwards in the horizontal sliding cavity 18, the air injection pipe 19 is contacted with the slope surface 22 to lift the third piston 21 to move upwards so as to lift the fourth piston 23 to move upwards so as to open the communication between the horizontal sliding cavity 18 and the air pipe 17, air compressed from the air injection pipe 13 is sprayed out from the air injection pipe 19 to align with the groove 11 so as to secondarily slow down the rapid movement of the test piece 2 towards the right, meanwhile, the air in the air cavity 13 is pushed out by the second piston 14 which is pushed to move upwards and is ejected out of the gas ejector 19, the first vertical sliding cavity is provided with a limiting block 24, the third piston 21 is provided with a step 24 corresponding to the limiting block 24 to prevent the third piston 21 from being pushed out of the first vertical sliding cavity, the gas ejector 19 is provided with a gas ejector cavity 20, the gas ejector cavity 20 corresponds to the horizontal sliding cavity 18, and the sliding distance of the gas ejector 19 in the horizontal sliding cavity 18 is the same as the sliding distance of the first piston 8 towards the right.
As a specific embodiment, the trolley 1 is provided with a collar 25, and the test piece 2 extends into a pair of the collars 25.
Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.
Claims (3)
1. The utility model provides a platform truck test piece protection device which characterized in that: the hydraulic test device comprises a test piece (2) and a cylinder body (3) which are installed on a trolley (1), wherein an inner cylinder sleeve (4) is arranged in the cylinder body (3), a first piston (8) is arranged in the inner cylinder sleeve (4), the first piston (8) is connected with a piston rod (5), the piston rod (5) extends out of the cylinder body (3) and is connected with a baffle (6), a buffer block (7) corresponding to the test piece (2) is arranged on the baffle (6), an oil outlet and an oil inlet (9) are arranged on the inner cylinder sleeve (4), the oil inlet (9) and the oil outlet are located on the left side and the right side of the first piston (8), and hydraulic oil is filled in the cylinder body (; the oil-out test device is characterized in that a shell with an air cavity (13) is arranged on the cylinder body, a second piston (14) is installed in the shell, a connecting rod (15) is connected to the second piston (14), a blocking plate (16) located in the air cavity (13) is arranged on the connecting rod (15), when the blocking plate (16) is in contact with the cylinder body (3), the connecting rod (15) penetrates through the cylinder body (3) and extends into the oil outlet but does not penetrate through the oil outlet, the air cavity (13) is communicated with an air injection pipe (19) connected to the baffle (6), and the air injection pipe (19) is arranged right opposite to the test piece (2).
2. The trolley test piece protection device as claimed in claim 1, wherein a boss (12) is provided on the surface of the test piece (2) corresponding to the buffer block (7), a recess (10) is provided on the boss (12), and the recess (10) is adapted to the buffer block (7).
3. The trolley test piece protection device as claimed in claim 2, wherein the air chamber (13) is connected with an air pipe (17), the hollow shell is provided with a first vertical sliding chamber, a second vertical sliding chamber and a horizontal sliding chamber (18), the first vertical sliding chamber and the second vertical sliding chamber are inserted with a third piston (21) and a fourth piston (23) which are matched with the first vertical sliding chamber and the second vertical sliding chamber, the third piston (21) is fixedly connected with the fourth piston (23), the horizontal sliding chamber (18) is communicated with the air pipe (17) through the second vertical sliding chamber, and the fourth piston (23) can open or cut off the communication between the second vertical sliding chamber and the air pipe (17) when the second vertical sliding chamber moves up and down; the air injection pipe (19) is matched with the horizontal sliding cavity (18), a circle of groove (11) is arranged on the boss (12), and the air injection pipe (19) corresponds to the groove (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711442285.4A CN108168905B (en) | 2017-12-26 | 2017-12-26 | Trolley test piece protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711442285.4A CN108168905B (en) | 2017-12-26 | 2017-12-26 | Trolley test piece protection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108168905A CN108168905A (en) | 2018-06-15 |
| CN108168905B true CN108168905B (en) | 2020-08-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711442285.4A Active CN108168905B (en) | 2017-12-26 | 2017-12-26 | Trolley test piece protection device |
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| Country | Link |
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| CN (1) | CN108168905B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2494297Y (en) * | 2001-04-23 | 2002-06-05 | 王武生 | Automobile collision simulation trolley |
| CN2873579Y (en) * | 2006-01-03 | 2007-02-28 | 王国峰 | Automobile collision buffer protector |
| CN101608970A (en) * | 2008-06-18 | 2009-12-23 | 上海奇谋能源技术开发有限公司 | The reproducing apparatus of automobile impact curve |
| CN202693249U (en) * | 2012-06-13 | 2013-01-23 | 浙江吉利汽车研究院有限公司杭州分公司 | Sliding table collision test device |
| CN103776610A (en) * | 2014-01-26 | 2014-05-07 | 浙江吉利控股集团有限公司 | Dynamic impact test device |
| CN206378297U (en) * | 2016-11-10 | 2017-08-04 | 温州中业文化创意发展有限公司 | A kind of vehicle impact testing buffering energy-absorbing device |
-
2017
- 2017-12-26 CN CN201711442285.4A patent/CN108168905B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2494297Y (en) * | 2001-04-23 | 2002-06-05 | 王武生 | Automobile collision simulation trolley |
| CN2873579Y (en) * | 2006-01-03 | 2007-02-28 | 王国峰 | Automobile collision buffer protector |
| CN101608970A (en) * | 2008-06-18 | 2009-12-23 | 上海奇谋能源技术开发有限公司 | The reproducing apparatus of automobile impact curve |
| CN202693249U (en) * | 2012-06-13 | 2013-01-23 | 浙江吉利汽车研究院有限公司杭州分公司 | Sliding table collision test device |
| CN103776610A (en) * | 2014-01-26 | 2014-05-07 | 浙江吉利控股集团有限公司 | Dynamic impact test device |
| CN206378297U (en) * | 2016-11-10 | 2017-08-04 | 温州中业文化创意发展有限公司 | A kind of vehicle impact testing buffering energy-absorbing device |
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| Publication number | Publication date |
|---|---|
| CN108168905A (en) | 2018-06-15 |
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