CN110967262A - Device and method for detecting bending of shock absorber assembly for short force arm - Google Patents
Device and method for detecting bending of shock absorber assembly for short force arm Download PDFInfo
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- CN110967262A CN110967262A CN201911025161.5A CN201911025161A CN110967262A CN 110967262 A CN110967262 A CN 110967262A CN 201911025161 A CN201911025161 A CN 201911025161A CN 110967262 A CN110967262 A CN 110967262A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/20—Investigating strength properties of solid materials by application of mechanical stress by applying steady bending forces
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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
- G01M17/04—Suspension or damping
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
- G01N3/04—Chucks
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0058—Kind of property studied
- G01N2203/0069—Fatigue, creep, strain-stress relations or elastic constants
- G01N2203/0073—Fatigue
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a device and a method for detecting bending of a shock absorber assembly for a short force arm, and the device and the method comprise a box body, wherein the box body comprises an A plate and a B plate which are vertically connected, the box body also comprises a supporting plate which is vertically connected with the same side of the A plate and the B plate, a through hole is arranged on the supporting plate, a positioning column is arranged in the through hole, the positioning column comprises a quarter cylinder plate and an installing plate arranged at the end part of the cylinder plate, the installing plate is attached to and installed on the outer wall surface of the supporting plate beside the through hole, the device and the method also comprise a clamping block used for clamping the end part of the shock absorber. The detection device disclosed by the invention has the advantages that 2 actuators and the shock absorber assembly are reliably connected according to the test requirements by innovating the box body, the positioning column and the clamping block, the problem that the length L of the force arm is smaller than the total cost length of the shock absorber in the bidirectional bending fatigue endurance detection process of the shock absorber assembly and the connection cannot be realized is solved, and the test work can be carried out according to the test verification requirements.
Description
Technical Field
The invention relates to a shock absorber detection device, in particular to a shock absorber assembly bending detection device and method for a short force arm.
Background
Flexural strength is one of the key properties of vehicle shock absorber assemblies. In the design and development process of the whole vehicle and the shock absorber, the bending fatigue endurance strengths of the shock absorber assembly in the front and rear directions and the left and right directions of the vehicle need to be detected simultaneously, and whether the bending fatigue endurance strengths of the shock absorber assembly under the condition of bearing certain loads in the two directions simultaneously meet the product design requirements is verified.
In the process of detecting the bidirectional bending fatigue endurance of the shock absorber assembly, a force application point required by the design of the whole vehicle on the shock absorber assembly is added with variable forces F1 and F2 in 2 directions, so that the shock absorber assembly generates bidirectional disturbance around a lower mounting point. Due to the requirement of design verification of the whole vehicle, the force application point of part of products is closer to the lower mounting point of the shock absorber assembly, and the length L of the force arm is smaller than the total cost length of the shock absorber, so that the problem that the shock absorber assembly and the actuator can not be connected according to the test requirement exists.
Disclosure of Invention
The invention aims to solve the technical problem that in the bidirectional bending fatigue endurance detection process of a shock absorber assembly, the length L of a force arm at a part of force application point is smaller than the total cost length of the shock absorber, and the problem that the shock absorber assembly and an actuator cannot be connected exists.
The invention is realized by the following technical scheme:
the invention relates to a bending detection device of a shock absorber assembly for a short force arm, which comprises a box body, wherein the box body comprises an A plate which is vertically arranged and a B plate which is horizontally arranged and vertically connected with the A plate, the box body also comprises a supporting plate which is vertically connected with the same side of the A plate and the B plate, the A plate is used for being connected with the actuator A, the B plate is used for being connected with the actuator B, the supporting plate is provided with a through hole, wherein two side edges of the through hole are respectively flush with the inner wall surfaces of the plate A and the plate B, a positioning column is arranged in the through hole, the positioning column comprises a quarter cylindrical plate and a mounting plate arranged at the end part of the cylindrical plate, the outer wall of the cylindrical plate is tangent to and tightly attached to the inner walls of the A plate and the B plate, the mounting plate is attached to and mounted on the outer wall surface of a supporting plate beside the through hole, the positioning column further comprises a clamping block used for clamping the end part of the shock absorber, and the two ends of the clamping block are respectively detachably mounted on the A plate and the B plate.
The detection device disclosed by the invention has the advantages that 2 actuators and the shock absorber assembly are reliably connected according to the test requirements by innovating the box body, the positioning column and the clamping block, the problem that the length L of the force arm is smaller than the total cost length of the shock absorber in the bidirectional bending fatigue endurance detection process of the shock absorber assembly and the connection cannot be realized is solved, and the test work can be carried out according to the test verification requirements. Before the positioning column is used, a plate A and a plate B of the box body are fastened with an actuator A and an actuator B, wherein force extension lines of the actuator A and the actuator B are intersected with a central axis of a cylindrical plate in the positioning column at one point; the radius of the cylindrical plate is selected according to the radius of the end part of the shock absorber; the end part of the shock absorber is placed on the cylindrical plate of the positioning column from one inward side of the supporting plate, the end part of the shock absorber bracket is fixed at a proper position of the MTS comprehensive experiment platform through the shock absorber bracket end fixing tool, the length of the end part of the shock absorber entering the positioning column is adjusted to meet the requirement of the length L of a force arm in the experiment, finally, the end part of the shock absorber is clamped through the fastening clamping block and the positioning column in a matching mode, the shock absorber is bent under the action of the force F1 and the force F2 by adopting the structure and applying the variable force F1 and the variable force F2 through the actuator A and the actuator B, the problem that the 2 actuators and the shock absorber cannot be connected according to the experiment requirement is solved, and the experiment work can be carried out according to the experiment verification requirement. At the moment, the arm length L is the distance from the intersection point of the extension lines of the forces of the actuator A and the actuator B to the mounting point of the end of the shock absorber bracket on the fixed tool of the shock absorber bracket, so that the connection between the actuator and the shock absorber is realized when the arm length L is smaller than the total cost of the shock absorber. Meanwhile, the device has better universality, can meet the detection requirements of different shock absorbers by replacing the positioning columns matched with the shock absorbers, can be quickly installed for testing, and saves the manufacturing period and cost of tools.
The clamp splice comprises four folded plates and forms the W type, mutually perpendicular between two adjacent folded plates, and one of two folded plates that are located both ends sets up with A board parallel, and another sets up with B board parallel, and the folded plate that is located both ends can pass through bolt and screw fixation on A board, B board, and the back is installed to the clamp splice promptly, compresses tightly fixedly the shock absorber tip through two middle folded plates and reference column.
The two folded plates at the two ends of the clamping block are provided with strip-shaped mounting holes, so that the clamping block can be conveniently and fixedly connected with the A plate and the B plate.
The inner wall of the cylindrical plate is covered with a rubber layer, so that the outer wall of the end part of the shock absorber is prevented from being damaged by friction.
The edge parts of the plate A and the plate B are provided with protruding parts, and screw holes or installation through holes are formed in the protruding parts, so that the clamping blocks can be fixedly installed conveniently.
A shock absorber assembly bending detection method for a short force arm comprises the following steps of 1) installing a plate A and a plate B of a box body with an actuator A and an actuator B, and ensuring that force extension lines of the actuator A and the actuator B are intersected with the central axis of a cylindrical plate in a positioning column at one point; 2) the end part of the shock absorber is placed on the cylindrical plate of the positioning column from the inward side of the supporting plate, the bracket end of the shock absorber is fixed at a proper position of the MTS comprehensive experiment platform through a shock absorber bracket end fixing tool, and the length of the end part of the shock absorber entering the positioning column is adjusted to meet the requirement of the length L of the force arm in the experiment; 3) fixedly mounting the clamping block with the plate A and the plate B, and clamping the end part of the shock absorber in cooperation with the positioning column; 4) according to the requirement of experimental verification, the starting actuator A and the actuator B apply variable force F1 and variable force F2 to the force application point of the shock absorber from two directions, and the shock absorber bends under the action of the force F1 and the force F2.
Compared with the prior art, the invention has the following advantages and beneficial effects:
1. the invention relates to a device and a method for detecting the bending of a shock absorber assembly with a short force arm, which are used for reliably connecting 2 actuators and the shock absorber assembly according to the test requirements by innovating a box body, a positioning column and a clamping block, solving the problem that the length L of the force arm is less than the total cost length of the shock absorber and cannot be connected in the bidirectional bending fatigue endurance detection process of the shock absorber assembly, and enabling the test work to be carried out according to the test verification requirements;
2. the invention relates to a device and a method for detecting the bending of a shock absorber assembly with a short force arm.A clamping block is in a W shape formed by four folded plates, and the end part of a shock absorber is pressed and fixed by two folded plates in the middle and a positioning column, so that the stability is good;
3. the device has good universality, can meet the detection requirements of different shock absorbers by replacing the positioning columns matched with the shock absorbers, can be quickly installed for testing, and saves the manufacturing period and cost of tools.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an assembly view of the present invention and a shock absorber.
Reference numbers and corresponding part names in the drawings:
the plate comprises a 1-A plate, a 2-B plate, a 3-supporting plate, a 4-through hole, a 5-cylindrical plate, a 6-mounting plate, a 7-clamping block and an 8-mounting hole.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit the present invention.
Example 1
As shown in figure 1, the invention relates to a bending detection device of a shock absorber assembly for a short force arm, which comprises a box body, wherein the box body comprises an A plate 1 which is vertically arranged and a B plate 2 which is horizontally arranged and is vertically connected with the A plate 1, the box body also comprises a supporting plate 3 which is vertically connected with the same side of the A plate 1 and the B plate 2, the A plate 1 is used for being connected with an actuator A, the B plate 2 is used for being connected with an actuator B, the supporting plate 3 is provided with a through hole 4, two side edges of the through hole 4 are respectively flush with the inner wall surfaces of the A plate 1 and the B plate 2, a positioning column is arranged in the through hole 4, the positioning column comprises a quarter cylindrical plate 5 and a mounting plate 6 arranged at the end part of the cylindrical plate 5, the outer wall of the cylindrical plate 5 is tangent and tightly attached to the inner walls of the A plate 1 and the B plate 2, the mounting plate 6 is attached and mounted on the outer wall surface of, two ends of the clamping block 7 are respectively and detachably arranged on the A plate 1 and the B plate 2.
The detection device disclosed by the invention has the advantages that 2 actuators and the shock absorber assembly are reliably connected according to the test requirements by innovating the box body, the positioning column and the clamping block, the problem that the length L of the force arm is smaller than the total cost length of the shock absorber in the bidirectional bending fatigue endurance detection process of the shock absorber assembly and the connection cannot be realized is solved, and the test work can be carried out according to the test verification requirements. As shown in FIG. 2, which is an assembly diagram of a detection device and a damper, before the detection device is used, the A plate and the B plate of a box body are firstly fastened with an actuator A and an actuator B, wherein the extension lines of the forces of the actuator A and the actuator B are converged with the central axis of a cylindrical plate in a positioning column at one point; the radius of the cylindrical plate is selected according to the radius of the end part of the shock absorber; the end part of the shock absorber is placed on the cylindrical plate of the positioning column from one inward side of the supporting plate, the end part of the shock absorber bracket is fixed at a proper position of the MTS comprehensive experiment platform through the shock absorber bracket end fixing tool, the length of the end part of the shock absorber entering the positioning column is adjusted to meet the requirement of the length L of a force arm in the experiment, finally, the end part of the shock absorber is clamped through the fastening clamping block and the positioning column in a matching mode, the shock absorber is bent under the action of the force F1 and the force F2 by adopting the structure and applying the variable force F1 and the variable force F2 through the actuator A and the actuator B, the problem that the 2 actuators and the shock absorber cannot be connected according to the experiment requirement is solved, and the experiment work can be carried out according to the experiment verification requirement. At the moment, the arm length L is the distance from the intersection point of the extension lines of the forces of the actuator A and the actuator B to the mounting point of the end of the shock absorber bracket on the fixed tool of the shock absorber bracket, so that the connection between the actuator and the shock absorber is realized when the arm length L is smaller than the total cost of the shock absorber. Meanwhile, the device has better universality, can meet the detection requirements of different shock absorbers by replacing the positioning columns matched with the shock absorbers, can be quickly installed for testing, and saves the manufacturing period and cost of tools.
Preferably, the clamp splice comprises four folded plates and forms the W type, mutually perpendicular between two adjacent folded plates, one of two folded plates that are located both ends sets up with A board parallel, another sets up with B board parallel, and the folded plate that is located both ends can pass through bolt and screw to be fixed on A board, B board, and the back is installed to the clamp splice promptly, compresses tightly fixedly the shock absorber tip through two middle folded plates and reference column.
Preferably, the strip-shaped mounting holes 8 are formed in the two folded plates at the two ends of the clamping block, so that the clamping block can be conveniently and fixedly connected with the plate A and the plate B.
Preferably, the inner wall of cylinder board coats and is stamped the rubber layer, avoids causing the friction damage to shock absorber tip outer wall.
Preferably, the edge parts of the plate A and the plate B are respectively provided with a protruding part, and the protruding parts are provided with screw holes or installation through holes, so that the clamping blocks can be conveniently and fixedly installed.
A shock absorber assembly bending detection method for a short force arm comprises the following steps of 1) installing a plate A and a plate B of a box body with an actuator A and an actuator B, and ensuring that force extension lines of the actuator A and the actuator B are intersected with the central axis of a cylindrical plate in a positioning column at one point; 2) the end part of the shock absorber is placed on the cylindrical plate of the positioning column from the inward side of the supporting plate, the bracket end of the shock absorber is fixed at a proper position of the MTS comprehensive experiment platform through a shock absorber bracket end fixing tool, and the length of the end part of the shock absorber entering the positioning column is adjusted to meet the requirement of the length L of the force arm in the experiment; 3) fixedly mounting the clamping block with the plate A and the plate B, and clamping the end part of the shock absorber in cooperation with the positioning column; 4) according to the requirement of experimental verification, the starting actuator A and the actuator B apply variable force F1 and variable force F2 to the force application point of the shock absorber from two directions, and the shock absorber bends under the action of the force F1 and the force F2.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (6)
1. The bending detection device for the shock absorber assembly with the short force arm is characterized by comprising a box body, wherein the box body comprises an A plate (1) which is vertically arranged and a B plate (2) which is horizontally arranged and is vertically connected with the A plate (1), the box body also comprises a supporting plate (3) which is vertically connected with the same side of the A plate (1) and the B plate (2), the A plate (1) is used for being connected with an actuator A, the B plate (2) is used for being connected with the actuator B, a through hole (4) is formed in the supporting plate (3), two side edges of the through hole (4) are respectively flushed with the inner wall surfaces of the A plate (1) and the B plate (2), a positioning column is arranged in the through hole (4), the positioning column comprises a quarter cylindrical plate (5) and a mounting plate (6) arranged at the end part of the cylindrical plate (5), the outer wall of the cylindrical plate (5) is tangent to and tightly attached to the inner walls of the A plate (1) and the, the mounting plate (6) is attached to and mounted on the outer wall surface of the support plate (3) beside the through hole (4), the mounting plate further comprises a clamping block (7) used for clamping the end part of the shock absorber, and two ends of the clamping block (7) are respectively detachably mounted on the plate A (1) and the plate B (2).
2. The bending detection device for the shock absorber assembly with the short moment arm according to claim 1, wherein the clamping block (7) is formed by four folding plates which are in a W shape, two adjacent folding plates are perpendicular to each other, one of the two folding plates at two ends is arranged in parallel with the plate A, and the other folding plate is arranged in parallel with the plate B.
3. The bending detection device for the shock absorber assembly with the short moment arm according to claim 2, wherein the strip-shaped mounting holes (8) are formed in the two folded plates at the two ends of the clamping block (7).
4. The bending detection device for a damper assembly with a short moment arm according to claim 1, wherein the inner wall of the cylindrical plate (5) is covered with a rubber layer.
5. The bending detection device for a damper assembly with a short moment arm according to claim 1, wherein the edge portions of the A plate (1) and the B plate (2) are provided with protrusions.
6. A method for detecting the bending of a shock absorber assembly with a short force arm is characterized by comprising the following steps of 1) installing a plate A and a plate B of a box body of a detection device according to any one of claims 1 to 5 with an actuator A and an actuator B, and ensuring that the force extension lines of the actuator A and the actuator B are intersected with the central axis of a cylindrical plate in a positioning column at one point; 2) the end part of the shock absorber is placed on the cylindrical plate of the positioning column from the inward side of the supporting plate, the bracket end of the shock absorber is fixed at a proper position of the MTS comprehensive experiment platform through a shock absorber bracket end fixing tool, and the length of the end part of the shock absorber entering the positioning column is adjusted to meet the requirement of the length L of the force arm in the experiment; 3) fixedly mounting the clamping block with the plate A and the plate B, and clamping the end part of the shock absorber in cooperation with the positioning column; 4) according to the requirement of experimental verification, the starting actuator A and the actuator B apply variable force F1 and variable force F2 to the force application point of the shock absorber from two directions, and the shock absorber bends under the action of the force F1 and the force F2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911025161.5A CN110967262A (en) | 2019-10-25 | 2019-10-25 | Device and method for detecting bending of shock absorber assembly for short force arm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911025161.5A CN110967262A (en) | 2019-10-25 | 2019-10-25 | Device and method for detecting bending of shock absorber assembly for short force arm |
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| Publication Number | Publication Date |
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| CN110967262A true CN110967262A (en) | 2020-04-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911025161.5A Pending CN110967262A (en) | 2019-10-25 | 2019-10-25 | Device and method for detecting bending of shock absorber assembly for short force arm |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112254944A (en) * | 2020-10-19 | 2021-01-22 | 奇瑞商用车（安徽）有限公司 | New energy automobile shock absorber assembly lower mounting bracket welding strength test device and test method |
-
2019
- 2019-10-25 CN CN201911025161.5A patent/CN110967262A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112254944A (en) * | 2020-10-19 | 2021-01-22 | 奇瑞商用车（安徽）有限公司 | New energy automobile shock absorber assembly lower mounting bracket welding strength test device and test method |
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