CN212585985U - Polyurethane energy-absorbing pipe - Google Patents
Polyurethane energy-absorbing pipe Download PDFInfo
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- CN212585985U CN212585985U CN202021223176.0U CN202021223176U CN212585985U CN 212585985 U CN212585985 U CN 212585985U CN 202021223176 U CN202021223176 U CN 202021223176U CN 212585985 U CN212585985 U CN 212585985U
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Abstract
The utility model discloses a polyurethane energy-absorbing pipe relates to auto-parts and detects technical field, and it includes polyurethane energy-absorbing pipe body, polyurethane energy-absorbing pipe body divide into along its axial and is used for the low rigidity opening section of buffering energy-absorbing and is used for installing fixed high rigidity closed section. The utility model discloses divide into low hardness opening section and high hardness closed section with polyurethane energy-absorbing pipe, when having reduced low hardness opening section and carrying out the energy-absorbing operation, close the fixed influence of section installation to high hardness, and then improved the mounting structure intensity of polyurethane energy-absorbing pipe, help prolonging the life of polyurethane energy-absorbing pipe.
Description
Technical Field
The utility model belongs to the technical field of auto-parts detects technique and specifically relates to a polyurethane energy-absorbing pipe is related to.
Background
The test of the passive safety of the automobile comprises the following steps: the method comprises two types of tests, namely a real vehicle collision test and an automobile simulation collision (trolley) test. Since the real vehicle crash test is a destructive test and is expensive, it is often limited by capital, equipment and personnel. Compared with the real vehicle collision test, the trolley test has the advantages of good repeatability, easy control of collision waveform, low test cost and the like. In order to meet the requirements of the deceleration of the trolley under different collision conditions, a buffering energy-absorbing device can be arranged between the trolley and the rigid wall, and as shown in the existing Chinese patent with the publication number of CN107305160A, the device discloses a trolley collision deceleration adjusting test device which mainly comprises a rack, a sleeve device, an energy-absorbing pipe, a movable support and an impact rod. In the experiment, the energy absorption pipe is arranged in the sleeve device, when the trolley runs longitudinally and collides with the impact rod, the impact rod and the trolley move forwards together and transmit acting force to the impact head, the impact head moves forwards by extruding the energy absorption pipe, and extrusion resistance reacts on the trolley by the impact rod in the extrusion forward movement process, so that the trolley is decelerated. Wherein, the energy-absorbing pipe can play the effect of protection equipment, improvement detection efficiency and extension equipment life to the wholeness ability of equipment.
In the prior art, as shown in fig. 3, there is an energy-absorbing tube, which includes an energy-absorbing tube body 10, tube seams 20 are disposed on two radially symmetrical sides of the energy-absorbing tube body 10, the energy-absorbing tube body 10 is divided into a closed section 30 and an open section 40, the tube seams 20 are located at the open section 40 of the energy-absorbing tube body 10, and the hardness of the whole energy-absorbing tube body 10 is the same.
By adopting the scheme, the energy absorption pipe is arranged in the sleeve device, so that the effect of buffering and absorbing energy of the impact rod is achieved; however, in practical use, the closed section of the energy absorption pipe plays a role in installation and fixation, and the open section plays a role in energy absorption, and because the whole hardness of the energy absorption pipe is the same, the deformation generated by the open section can influence the installation and fixation of the closed section in each energy absorption process, so that the installation strength of the energy absorption pipe is reduced, the service life of the energy absorption pipe is shortened, and a part to be improved exists.
SUMMERY OF THE UTILITY MODEL
To the technical problem, the utility model aims to provide a polyurethane energy-absorbing pipe divide into low hardness opening section and high hardness closed section with polyurethane energy-absorbing pipe, when having reduced low hardness opening section and having carried out the energy-absorbing operation, closes the fixed influence of section installation to high hardness, and then has improved the mounting structure intensity of polyurethane energy-absorbing pipe, helps prolonging the life of polyurethane energy-absorbing pipe.
The above technical purpose of the present invention can be achieved by the following technical solutions:
the utility model provides a polyurethane energy-absorbing pipe, includes polyurethane energy-absorbing pipe body, polyurethane energy-absorbing pipe body is divided into along its axial and is used for the low rigidity open section of buffering energy-absorbing and is used for the fixed high rigidity closed section of installation.
By adopting the technical scheme, the polyurethane energy-absorbing pipe is divided into the low-hardness opening section and the high-hardness closing section, so that the influence on the installation and fixation of the high-hardness closing section when the low-hardness opening section is used for energy-absorbing operation is reduced, the installation structural strength of the polyurethane energy-absorbing pipe is further improved, and the service life of the polyurethane energy-absorbing pipe is prolonged.
The present invention may be further configured in a preferred embodiment as: the polyurethane energy-absorbing pipe body is provided with a pipe seam at the low-hardness opening section, and the pipe seam extends to the end of the low-hardness opening section.
By adopting the technical scheme, in actual use, personnel in work can enlarge the caliber of the low-hardness opening section of the polyurethane energy-absorbing pipe by utilizing the pipe seam arranged at the low-hardness opening section, and the polyurethane energy-absorbing pipe can be conveniently detached from the impact rod.
The present invention may be further configured in a preferred embodiment as: the length direction of the pipe seam is parallel to the axial direction of the polyurethane energy-absorbing pipe body.
By adopting the technical scheme, because the impact force that this low rigidity opening section received is radial force, with the length direction setting of tube slit and the axial direction parallel of polyurethane energy-absorbing pipe body, the deformation of the low rigidity opening section self of being convenient for resumes, to a certain extent, has protected the structural strength of polyurethane energy-absorbing pipe self.
The present invention may be further configured in a preferred embodiment as: the pipe seams are arranged on two radially symmetrical sides of the polyurethane energy-absorbing pipe body.
By adopting the technical scheme, the pipe seams are arranged on two radially symmetrical sides of the polyurethane energy-absorbing pipe body, so that the caliber of the low-hardness opening section can be conveniently enlarged by a worker, and the worker can detach the polyurethane energy-absorbing pipe from the impact rod.
The present invention may be further configured in a preferred embodiment as: the outer diameter of the high-hardness closed section end is smaller than that of the low-hardness open section.
By adopting the technical scheme, the outer diameter of the high-hardness closed section end is set to be smaller than that of the low-hardness open section, so that a worker can conveniently insert the polyurethane energy-absorbing pipe into the sleeve device.
The present invention may be further configured in a preferred embodiment as: the tube seam extends to a high-hardness closed section.
Through adopting above-mentioned technical scheme, extend the tube gap to high rigidity closed section, improved the deformation recovery ability of low rigidity open section, and then help improving the structural strength of low rigidity open section.
The present invention may be further configured in a preferred embodiment as: the width of the pipe seam is gradually reduced along the direction from the low-hardness opening section to the high-hardness closing section.
By adopting the technical scheme, the deformation is met, and meanwhile, the unnecessary loss of structural strength of the polyurethane energy-absorbing pipe is reduced.
The present invention may be further configured in a preferred embodiment as: and the inner diameter of the port of the low-hardness opening section is provided with a guide surface.
By adopting the technical scheme, the impact head on the impact rod can be conveniently inserted into the polyurethane energy absorption pipe by utilizing the guide surface arranged on the inner diameter at the port of the low-hardness opening section.
Compared with the prior art, the beneficial effects of the utility model are as follows:
the polyurethane energy-absorbing pipe is divided into the low-hardness opening section and the high-hardness closed section, so that the influence on the installation and fixation of the high-hardness closed section when the low-hardness opening section performs energy-absorbing operation is reduced, the installation structural strength of the polyurethane energy-absorbing pipe is further improved, and the service life of the polyurethane energy-absorbing pipe is prolonged;
by means of crack pouring extending to the high-hardness closed section, workers can detach the polyurethane energy absorption pipe from the impact rod conveniently, and meanwhile the deformation recovery capability of the low-hardness open section is improved.
Drawings
FIG. 1 is an axial view of the polyurethane energy-absorbing tube according to the present embodiment;
FIG. 2 is an axial view of the polyurethane energy-absorbing tube according to the second embodiment;
FIG. 3 shows a schematic structural view of an energy absorbing tube in the prior art.
Reference numerals: 1. a polyurethane energy-absorbing tube body; 2. a low hardness open section; 3. a high hardness closed section; 4. tube sewing; 5. a guide surface.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The first embodiment is as follows:
as shown in fig. 1, a polyurethane energy-absorbing pipe, including polyurethane energy-absorbing pipe body 1, polyurethane energy-absorbing pipe body 1 is divided into low hardness opening section 2 that is used for buffering the energy-absorbing along its axial and is used for installing fixed high hardness closed section 3, polyurethane energy-absorbing pipe is located the equal symmetry in the radial both sides of low hardness opening section 2 and has seted up tube gap 4, the length direction of tube gap 4 and the axial direction of polyurethane energy-absorbing pipe are parallel, and the one end of tube gap 4 extends to the tip of low hardness opening section 2, the other end of tube gap 4 extends to high hardness closed section 3, in addition, the width of tube gap 4 reduces along the direction that low hardness opening section 2 reaches high hardness closed section 3 gradually, when satisfying the deformation of low hardness opening section 2, improve the holistic structural strength of polyurethane energy-absorbing pipe.
In practical use, the polyurethane energy-absorbing pipe is inserted into the sleeve device, the high-hardness closed section 3 is fixedly installed in the sleeve device, the low-hardness open section 2 is located at the port of the sleeve device, the energy-absorbing function is realized by the low-hardness open section 2, the fixed installation function is realized by the low-hardness closed section, namely, the polyurethane energy-absorbing pipe is divided into the low-hardness open section 2 and the high-hardness closed section 3, the influence on the installation and fixation of the high-hardness closed section 3 is reduced when the low-hardness open section 2 is used for energy-absorbing operation, the installation structural strength of the polyurethane energy-absorbing pipe is further improved, and the service life of the polyurethane energy-absorbing pipe is prolonged.
In order to facilitate the insertion of the polyurethane energy-absorbing pipe into the bushing device, the outer diameter of the end 3 of the high-hardness closed section is smaller than that of the end 2 of the low-hardness open section.
The implementation principle of the embodiment is as follows:
in practical use, the polyurethane energy-absorbing pipe is inserted into the sleeve device, in an impact test, the guide surface 5 arranged on the inner diameter of the port of the low-hardness opening section 2 is used for facilitating the insertion of the impact rod into the polyurethane energy-absorbing pipe, and after the impact test is completed, a worker expands the caliber of the low-hardness opening section 2 under the action of the pipe seam 4 to separate the polyurethane energy-absorbing pipe from the impact rod.
Example two:
as shown in fig. 2, a polyurethane energy absorbing tube differs from the first embodiment in that:
in order to facilitate the insertion of the impact head on the impact rod into the polyurethane energy absorption pipe, the inner diameter at the port of the low-hardness opening section 2 is provided with a guide surface 5.
The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.
Claims (8)
1. The utility model provides a polyurethane energy-absorbing pipe, its characterized in that includes polyurethane energy-absorbing pipe body (1), polyurethane energy-absorbing pipe body (1) is divided into along its axial and is used for buffering low rigidity opening section (2) of energy-absorbing and is used for installing fixed high rigidity closed section (3).
2. The polyurethane energy-absorbing pipe as claimed in claim 1, wherein the polyurethane energy-absorbing pipe body (1) is provided with a pipe seam (4) at the low-hardness opening section (2), and the pipe seam (4) extends to the end of the low-hardness opening section (2).
3. The polyurethane energy-absorbing pipe as claimed in claim 2, wherein the length direction of the pipe seam (4) is parallel to the axial direction of the polyurethane energy-absorbing pipe body (1).
4. A polyurethane energy-absorbing tube according to claim 3, characterized in that the tube seams (4) are arranged on two radially symmetrical sides of the polyurethane energy-absorbing tube body (1).
5. A polyurethane energy absorbing tube according to claim 4, characterized in that the outer diameter of the end of the high stiffness closed section (3) is smaller than the outer diameter of the low stiffness open section (2).
6. A polyurethane energy absorbing tube according to claim 5, characterized in that the tube seam (4) extends to a high stiffness closed section (3).
7. Polyurethane energy absorbing tube according to claim 6, characterized in that the width of the tube seam (4) decreases gradually in the direction from the low stiffness open section (2) to the high stiffness closed section (3).
8. A polyurethane energy absorbing tube according to claim 1, characterized in that the inner diameter at the port of the low stiffness opening section (2) is provided with a guiding surface (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021223176.0U CN212585985U (en) | 2020-06-28 | 2020-06-28 | Polyurethane energy-absorbing pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021223176.0U CN212585985U (en) | 2020-06-28 | 2020-06-28 | Polyurethane energy-absorbing pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212585985U true CN212585985U (en) | 2021-02-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021223176.0U Active CN212585985U (en) | 2020-06-28 | 2020-06-28 | Polyurethane energy-absorbing pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212585985U (en) |
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2020
- 2020-06-28 CN CN202021223176.0U patent/CN212585985U/en active Active
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