CN111397883B - Sliding column buffer block bench test tool - Google Patents
Sliding column buffer block bench test tool Download PDFInfo
- Publication number
- CN111397883B CN111397883B CN202010289702.1A CN202010289702A CN111397883B CN 111397883 B CN111397883 B CN 111397883B CN 202010289702 A CN202010289702 A CN 202010289702A CN 111397883 B CN111397883 B CN 111397883B
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- piston rod
- buffer block
- barrel
- cylindrical
- rod
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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
- G01M13/00—Testing of machine parts
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M5/00—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings
Abstract
The embodiment of the invention provides a sliding column buffer block bench test tool which comprises an upper fixing plate, an upper supporting seat, a piston rod, a lower support and a piston rod fastening nut, wherein the upper fixing plate is fixedly connected with the upper supporting seat; the upper bracket includes the first barrel and the second barrel of coaxial setting, first barrel and second barrel are one end open-ended cylinder tubular structure, and the two opening opposite direction, the tip periphery of the open end of first barrel is provided with outside turn-ups, the turn-ups passes through first fastener and upper fixed plate fixed connection, the central through-hole that is used for running through the piston rod is all offered to the blind end of first barrel and second barrel, the second barrel is used for partly holding traveller buffer block, the lower bearing is cylindrical barrel, be provided with the piston rather than the looks adaptation in the lower bearing, the piston is connected to the one end of piston rod, the other end and the piston rod fastening nut threaded connection of piston rod, the income of lower bearing, the oil-out respectively with servo, the oil inlet intercommunication. The working condition of the strut buffer block on the automobile can be effectively simulated.
Description
Technical Field
The invention relates to the technical field of automobiles, in particular to a sliding column buffer block bench test tool.
Background
In order to ensure the steering stability and the comfort of modern automobiles, a suspension system is arranged on a chassis. A strut buffer block of an automobile is a part arranged on an automobile strut and belongs to an automobile chassis suspension system. The function of traveller buffer block is when the auto wheel upwards is beated, plays the cushioning effect through self compressed to limit the extreme stroke that the auto wheel upwards jumped.
When the automobile runs on various severe road surfaces, the automobile sliding column buffer block is frequently compressed repeatedly. Therefore, in the automobile design and development stage, before the road simulation test of the automobile is started, a series of bench tests are required to be carried out on the strut buffer block so as to test the static rigidity, the compression deformation condition, the fatigue durability and the like of the strut buffer block. Therefore, in the bench test, how to truly and effectively simulate the deformation environment of the strut buffer block in the working process to manufacture a scientific and reasonable strut buffer block bench test tool becomes the technical problem of research in various host factories at present.
Disclosure of Invention
The invention provides a sliding column buffer block bench test tool. The structure is simple, the performance is reliable, the cost is low, and multiple indexes such as static rigidity, compression deformation condition, fatigue durability and the like of the sliding column buffer block can be tested on the rack; the slide column buffer block bench test tool can simulate the use condition of the slide column buffer block on an automobile through a bench test to a great extent, and can truly and effectively simulate the working condition of the slide column buffer block on the automobile.
To solve the above technical problem, an embodiment of the present invention provides the following solutions:
a sliding column buffer block bench test tool comprises an upper fixing plate, an upper supporting seat, a piston rod, a lower supporting seat and a piston rod fastening nut;
the upper supporting seat comprises a first cylinder and a second cylinder which are coaxially arranged, the first cylinder and the second cylinder are of cylindrical structures with one ends open, the opening directions of the first cylinder and the second cylinder are opposite, an outward flange is arranged on the periphery of the end part of the open end of the first cylinder, the flange is fixedly connected with the upper fixing plate through a first fastener, central through holes for penetrating through piston rods are formed in the closed ends of the first cylinder and the second cylinder, the second cylinder is used for partially accommodating sliding column buffer blocks, the lower support is a cylindrical cylinder, pistons matched with the lower support are arranged in the lower support, one ends of the piston rods are connected with the pistons, the other ends of the piston rods are in threaded connection with the piston rod fastening nuts, and the piston rods can sequentially penetrate through the sliding column buffer blocks and the central through holes; and the oil inlet and the oil outlet of the lower support are respectively communicated with the oil outlet and the oil inlet of the servo mechanism.
Further, the closed end of the first cylinder is attached and welded with the closed end of the second cylinder.
Further, the sliding column buffer block bench test tool further comprises a lower supporting cover, the lower supporting cover is of a cylindrical groove structure, the lower supporting cover is fixedly arranged at the top end of the lower support, and the upper edge of the lower supporting cover is in fillet transition.
Further, first fastener includes upper bracket fastening bolt and upper bracket fastening nut with upper bracket fastening bolt matched with, first cylindrical through-hole has been seted up on the turn-ups, the cylindrical through-hole of second has been seted up to the upper fixed plate correspondence, upper bracket fastening bolt run through respectively behind first cylindrical through-hole and the cylindrical through-hole of second with upper bracket fastening nut screw-thread fit.
Furthermore, the number of the first cylindrical through holes is three, and the three first cylindrical through holes are uniformly distributed on the flanging.
Further, upper bracket fastening bolt is including the first end, threaded rod and the second end that connect gradually, the first end is cylindrical, the external diameter of first end is greater than the external diameter of threaded rod, the second end be with the coaxial round platform form of threaded rod, the main aspects of second end are connected the threaded rod.
Further, the upper fixing plate is a metal flat plate.
Further, the piston rod is a stepped rod and comprises a first section rod and a second section rod, the outer diameter of the first section rod is smaller than that of the second section rod, threads matched with the piston rod fastening nut are arranged on the first section rod, and the second section rod is connected with the piston.
The scheme of the invention at least comprises the following beneficial effects:
the scheme of the invention has the advantages of simple structure, reliable performance and low cost, and can test multiple indexes of static rigidity, compression deformation condition, fatigue durability and the like of the strut buffer block on the rack. Moreover, the slide column buffer block bench test tool can simulate the use condition of the slide column buffer block on the automobile to a great extent through a bench test, and can truly and effectively simulate the working condition of the slide column buffer block on the automobile, so that the development cost of the slide column buffer block is saved and the development period of the slide column buffer block is shortened in the design and development stage of the automobile.
Drawings
FIG. 1 is a schematic structural diagram of a sliding column buffer block bench test tool of the invention;
FIG. 2 is a perspective view of the first cylinder of FIG. 1;
FIG. 3 is a perspective view of an upper support seat of the strut buffer block test fixture;
FIG. 4 is a schematic diagram showing the fit between a piston rod and a lower bearing seat of the strut buffer block test fixture;
wherein:
101, fixing a plate; 102 an upper supporting seat; 103 a piston rod; 1031 a first section of rod;
1032 a second section of rod; 104 lower support; 105 an upper support seat fastening bolt;
106, supporting a seat fastening nut; 107 piston rod fastening nuts; 108 strut buffer blocks; 109 a piston;
110 lower support caps; 1021 a first cylinder; 1022 a second cylinder; 1023 first cylindrical through hole.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
Referring to fig. 1 to 4, the strut buffer block bench test fixture according to an embodiment of the present invention includes an upper fixing plate 101, an upper bearing seat 102, a piston rod 103, a lower bearing 104, and a piston rod fastening nut 107.
The upper bearing housing 102 includes a first barrel 1021 and a second barrel 1022 coaxially disposed. The first barrel 1021 and the second barrel 1022 are both cylindrical structures with one open end, the open directions of the first barrel 1021 and the second barrel 1022 are opposite, an outward flange is arranged on the periphery of the end of the open end of the first barrel 1021, and the flange is fixedly connected with the upper fixing plate 101 through a first fastener.
The closed ends of the first barrel 1021 and the second barrel 1022 are both provided with a central through hole for penetrating through the piston rod 103, and the second barrel 1022 is used for partially accommodating the strut buffer block 108.
The lower support 104 is a cylindrical cylinder, a piston 109 matched with the lower support 104 is arranged in the lower support 104, one end (the lower end in fig. 1) of the piston rod 103 is connected with the piston 109, the other end (the upper end in fig. 1) of the piston rod 103 is in threaded connection with a piston rod fastening nut 107, and the piston rod 103 can sequentially penetrate through the sliding column buffer block 108 and the central through hole. The oil inlet and the oil outlet of the lower support 104 are respectively communicated with the oil inlet and the oil outlet of the servo mechanism.
In this embodiment, first fastener includes upper bracket fastening bolt 105 and upper bracket fastening nut 106 with upper bracket fastening bolt 105 matched with, first cylindrical through-hole 1023 has been seted up on the turn-over, and the cylindrical through-hole of second has been seted up to upper fixing plate 101 correspondence, and upper bracket fastening bolt 105 runs through respectively behind first cylindrical through-hole and the cylindrical through-hole of second with upper bracket fastening nut 106 screw-thread fit. In fig. 2, the number of the first cylindrical through holes 1023 is three, and the three first cylindrical through holes 1023 are uniformly distributed on the flange.
The upper fixing plate 101 is a flat metal plate, and the entire upper fixing plate 101 is fixed by a periphery. The upper fixing plate 101 is provided with a second cylindrical through hole at a designated position, the hole diameter of the second cylindrical through hole is the same as that of the first cylindrical through hole 1023, and the distribution of the second cylindrical through hole on the upper fixing plate 101 is the same as that of the first cylindrical through hole 1023 on the flanging.
The upper fixing plate 101 plays a fixing role in the strut buffer block bench test tool, so as to play a basic supporting role in the compression process of the strut buffer block 108 in the bench test.
The inner space of the first barrel 1021 provides space for the piston rod fastening nut 107 to be fastened. The closed end (lower end in fig. 1) of the first barrel 1021 is provided with a central through hole for passing the piston rod 103 and for securing the piston rod 103 by tightening the piston rod fastening nut 107.
The shape of the second barrel 1022 mimics the size and shape of the strut top bearing on the vehicle to ensure that the compressive deformation of the strut bumper 108 and the compressive deformation state of the strut bumper on the actual vehicle are in agreement during the bench test. The cylindrical groove structure (inner space) of the second barrel 1022 provides a deformation space for the strut buffer block 108.
The closed end (upper end in fig. 1) of the second cylinder 1022 is opened with a central through hole for passing through the piston rod 103, and the central through hole is a cylindrical through hole, and is the same as the central through hole opened at the closed end (lower end in fig. 1) of the first cylinder 1021, and is also used for passing through the piston rod 103. In the bench test, the inner surface of the closed end of the second barrel 1022 is in abutment with the upper end surface of the strut bumper 108.
Preferably, the upper bearing block fastening bolt 105 includes a first end, a threaded shaft, and a second end connected in series. The first end is cylindrical, the external diameter of first end is greater than the external diameter of threaded rod, the second end be with the coaxial round platform form of threaded rod, the main aspects of second end are connected the threaded rod.
The diameter of upper bracket fastening bolt 105 slightly is less than and sets up the aperture of the first cylindrical through-hole 1023 on the turn-ups, the quantity of upper bracket fastening bolt 105 is three, is used for the turn-ups is fixed with being connected of upper fixed plate 101, has realized that first barrel 1021 is fixed with being connected of upper fixed plate 101.
The second end of the upper bearing block fastening bolt 105 is in the shape of a truncated cone coaxial with the threaded rod, so that the threaded head of the upper bearing block fastening bolt 105 is provided with a guide mechanism, which facilitates the assembly of the upper bearing block 102 and the upper fixing plate 101. The size of the upper support fastening nut 106 is the same as that of the upper support fastening bolt 105, and the number of the upper support fastening nuts is three, and the upper support fastening nut is used for connecting and fixing the upper support 102 and the upper fixing plate 101.
Preferably, the closed end of the first barrel 1021 and the closed end of the second barrel 1022 are butt welded, so that the first barrel 1021 and the second barrel 1022 are integrally end-welded. In other embodiments, the closed end of the first barrel 1021 and the closed end of the second barrel 1022 may abut against each other without being welded into a single integral body, i.e., the first barrel 1021 and the second barrel 1022 are independent of each other without being welded into a single integral body.
As a preferable embodiment, the strut buffer block bench test tool further includes a lower support cover 110, the lower support cover 110 is a cylindrical groove structure, the lower support cover 110 is fixed on the top end of the lower support 104, and the upper edge of the lower support cover 110 is in fillet transition.
The lower support cover 110 is a cylindrical groove structure and is fixed on the top end of the cylindrical barrel-shaped lower support 104 through a press-fitting process. The upper plane of the lower support cover 110 simulates the upper plane of an automobile upper strut damper, and at the same time, the circumferential ring of the lower support cover 110 is rounded to prevent cutting of the lower end of the strut damper 108 when contacting the strut damper 108, resulting in premature damage to the strut damper 108.
The lower support 104 is connected with the test servo mechanism, a cylinder body of the lower support 104 is used as a hydraulic cylinder, and an oil inlet and an oil outlet of the lower support 104 are respectively communicated with an oil outlet and an oil inlet of the servo mechanism. The lower bearing 104 and the piston rod 103 can generate relative axial movement under the driving of the test servo mechanism, so that the lower bearing 104 of the strut buffer block 108 can reciprocate along the axial direction of the piston rod 103, and the compression of the strut buffer block 108 can be realized by controlling the displacement of the lower bearing 104 of the strut buffer block 108.
Preferably, the piston rod 103 is a stepped rod, and includes a first section bar 1031 and a second section bar 1032, the first section bar 1031 has an outer diameter smaller than that of the second section bar 1032, the first section bar 1031 is provided with a thread matching with the piston rod fastening nut 107, and the second section bar 1032 is connected with the piston 109.
The piston rod fastening nut 107 has the same size as the thread of the upper end of the piston rod 103, and is used for connecting and fixing the piston rod 103 and the upper bearing seat 102. The body of the piston rod 103 is a cylindrical metal rod. The upper end is provided with a step shape and a fastening thread, and the lower end is provided with a structure connected with the piston. The upper end of the piston rod 103 is fixedly connected with the upper bearing seat 102 through a piston rod fastening bolt 105. The lower end of the piston rod 103 is connected with a piston 109, the piston 109 is matched with the cylinder of the lower support 104, and the piston 109 can reciprocate up and down in the cylinder of the lower support 104.
The piston rod 103 provides a support for mounting the strut buffer block 108, and a central hole of the strut buffer block 103 penetrates through the piston rod 103, and an interference fit exists between the piston rod 103 and the strut buffer block. The lower end of the piston rod 103 is connected with the piston 109, so that the piston rod 103 can axially reciprocate in the cylinder of the lower support 104, and finally, the compression deformation test of the strut buffer block 108 is realized.
When the strut buffer 108 is subjected to a bench test, the lower support 104 of the strut buffer 108 is connected to a test servo mechanism, so that the lower support 104 of the strut buffer 108 reciprocates in the axial direction of the piston rod, and the compression amount of the strut buffer 108 is realized by controlling the displacement of the lower support 104 of the strut buffer 108.
The sliding column buffer block bench test tool of each embodiment can truly and effectively simulate the deformation environment of the sliding column buffer block in work through the upper and lower contact surfaces of the self-made sliding column buffer block and the related fixing mechanisms, so that a series of bench performance tests such as static rigidity tests, compression deformation tests and fatigue endurance tests can be carried out. The testing device is simple in structure, reliable in performance and low in cost, and can be used for testing multiple indexes of static rigidity, compression deformation conditions, fatigue durability and the like of the strut buffer block 108 on a rack. Moreover, the bench test tool for the strut buffer block can simulate the use condition of the strut buffer block 108 on the automobile to a great extent through a bench test, and can truly and effectively simulate the working condition of the strut buffer block on the automobile, so that the development cost of the strut buffer block 108 is saved and the development period of the strut buffer block 108 is shortened in the design and development stage of the automobile.
It should be noted that the features of the above embodiments and examples may be combined with each other without conflict.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (8)
1. A sliding column buffer block bench test tool is characterized by comprising an upper fixing plate (101), an upper supporting seat (102), a piston rod (103), a lower supporting seat (104) and a piston rod fastening nut (107);
the upper supporting seat (102) comprises a first cylinder body (1021) and a second cylinder body (1022) which are coaxially arranged, the first cylinder body (1021) and the second cylinder body (1022) are both cylindrical structures with one ends open, the opening directions of the first cylinder body (1021) and the second cylinder body (1022) are opposite, an outward flange is arranged on the periphery of the end part of the open end of the first cylinder body (1021), the flange is fixedly connected with the upper fixing plate (101) through a first fastener, central through holes for penetrating through the piston rod (103) are formed in the closed ends of the first cylinder body (1021) and the second cylinder body (1022), the second cylinder body (1022) is used for partially accommodating the strut buffer block (108), the lower support (104) is a cylindrical cylinder body, a piston (109) matched with the lower support is arranged in the lower support (104), one end of the piston rod (103) is connected with the piston (109), and the other end of the piston rod (103) is in threaded connection with the piston rod fastening nut (107), the piston rod (103) can sequentially penetrate through the sliding column buffer block (108) and the central through hole; the oil inlet and the oil outlet of the lower support (104) are respectively communicated with the oil inlet and the oil outlet of the servo mechanism;
the central hole of the sliding column buffer block (108) penetrates through the piston rod (103), and the sliding column buffer block and the piston rod are connected in an interference fit mode.
2. The strut bumper block bench test tool of claim 1, wherein the closed end of the first barrel (1021) is in snug welding with the closed end of the second barrel (1022).
3. The strut buffer block bench test tool according to claim 1, further comprising a lower support cover (110), wherein the lower support cover (110) is of a cylindrical groove structure, the lower support cover (110) is covered and fixed on the top end of the lower support (104), and the upper edge of the lower support cover (110) is in fillet transition.
4. The strut buffer block bench test tool according to claim 1, wherein the first fastener comprises an upper support seat fastening bolt (105) and an upper support seat fastening nut (106) matched with the upper support seat fastening bolt (105), a first cylindrical through hole (1023) is formed in the turnover edge, a second cylindrical through hole is correspondingly formed in the upper fixing plate (101), and the upper support seat fastening bolt (105) penetrates through the first cylindrical through hole and the second cylindrical through hole respectively and then is in threaded fit with the upper support seat fastening nut (106).
5. The strut buffer block bench test tool according to claim 4, wherein the number of the first cylindrical through holes is three, and the three first cylindrical through holes are uniformly distributed on the flange.
6. The strut buffer block bench test tool according to claim 4, wherein the upper supporting seat fastening bolt (105) comprises a first end portion, a threaded rod and a second end portion which are sequentially connected, the first end portion is cylindrical, the outer diameter of the first end portion is larger than that of the threaded rod, the second end portion is in a circular truncated cone shape coaxial with the threaded rod, and the large end of the second end portion is connected with the threaded rod.
7. The strut buffer block bench test tool according to any one of claims 1 to 6, wherein the upper fixing plate (101) is a metal flat plate.
8. The strut buffer block bench test tool according to any one of claims 1 to 6, wherein the piston rod (103) is a stepped rod and comprises a first section rod (1031) and a second section rod (1032), the outer diameter of the first section rod (1031) is smaller than that of the second section rod (1032), the first section rod (1031) is provided with a thread matched with the piston rod fastening nut (107), and the second section rod (1032) is connected with the piston (109).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010289702.1A CN111397883B (en) | 2020-04-14 | 2020-04-14 | Sliding column buffer block bench test tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010289702.1A CN111397883B (en) | 2020-04-14 | 2020-04-14 | Sliding column buffer block bench test tool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111397883A CN111397883A (en) | 2020-07-10 |
| CN111397883B true CN111397883B (en) | 2021-11-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010289702.1A Active CN111397883B (en) | 2020-04-14 | 2020-04-14 | Sliding column buffer block bench test tool |
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| CN (1) | CN111397883B (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205785793U (en) * | 2016-06-23 | 2016-12-07 | 广州汽车集团股份有限公司 | Bush test stand |
| CN106441747B (en) * | 2016-09-12 | 2018-11-06 | 北京强度环境研究所 | Metal damper axial static rigidity test device |
| CN106568556A (en) * | 2016-10-18 | 2017-04-19 | 北京汽车研究总院有限公司 | Lining rigidity testing tool and device |
| CN207388784U (en) * | 2017-11-10 | 2018-05-22 | 北京汽车研究总院有限公司 | A kind of front sliding column upper branching holder assembly and with its vehicle |
| CN207408115U (en) * | 2017-11-28 | 2018-05-25 | 福沃克汽车技术（苏州）有限公司 | Automobile chassis shock absorbing bushing static state and dynamic rate detection device |
| CN208847433U (en) * | 2018-06-12 | 2019-05-10 | 江阴圣世杰机械制造有限公司 | A kind of rubber bushing axial rigidity measuring device |
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2020
- 2020-04-14 CN CN202010289702.1A patent/CN111397883B/en active Active
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| CN111397883A (en) | 2020-07-10 |
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