CN113605316A - Rubber fender with buffering shock-absorbing function - Google Patents
Rubber fender with buffering shock-absorbing function Download PDFInfo
- Publication number
- CN113605316A CN113605316A CN202110857283.1A CN202110857283A CN113605316A CN 113605316 A CN113605316 A CN 113605316A CN 202110857283 A CN202110857283 A CN 202110857283A CN 113605316 A CN113605316 A CN 113605316A
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- block
- shock
- buffering
- protective shell
- fixedly connected
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
- E02B3/20—Equipment for shipping on coasts, in harbours or on other fixed marine structures, e.g. bollards
- E02B3/26—Fenders
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
- F16F15/06—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with metal springs
- F16F15/067—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with metal springs using only wound springs
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/30—Adapting or protecting infrastructure or their operation in transportation, e.g. on roads, waterways or railways
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Vibration Dampers (AREA)
Abstract
The invention relates to the technical field of shock absorption fender, and discloses a rubber fender with a shock absorption function, which comprises an installation mainboard, wherein a first protection shell and a second protection shell of a shock absorption box are arranged on one side of the top end of the installation mainboard; this rubber fender with buffering shock-absorbing function through being provided with shock attenuation box, first spliced pole, first spring, snubber block, buffer block, second spliced pole, second spring, movable block, first pivot, connecting rod and second pivot, can reach the impact force that can cushion the striking and bring fast to can alleviate the vibrations of fender and hull.
Description
Technical Field
The invention relates to the technical field of damping fenders, in particular to a rubber fender with a damping function.
Background
The fender is also called as ship fender, and is an elastic buffer device used at the edge of wharf or ship, and is made of wood and rubber. The fender is mainly used for slowing down impact force between a ship and a wharf or between the ships in the process of docking or mooring, and reducing or eliminating damage to the ships and the wharf, and comprises a cylindrical rubber fender, a semicircular (D-shaped) rubber fender, a DO (DO) rubber fender, a DA (digital) rubber fender, a drum rubber fender and an n-shaped rubber fender; the cylindrical rubber fender is characterized by low counterforce, small surface pressure, reasonable energy absorption, strong adaptability to the rolling and pitching of the ship without being influenced by the size of the ship during berthing, wide application, convenient installation and maintenance and particular suitability for old wharfs; the semi-circular (D-shaped) rubber fender is characterized by moderate counter force, higher energy absorption than that of a cylinder, convenient installation and work, and small bottom width, thus being particularly suitable for the installation and use of a frame type wharf and a ship board; the DO type rubber fender has the characteristics that the counter force energy absorption is higher than that of a D type fender, the installation strength and the service life are greatly improved than those of the D type fender, and the DO type rubber fender is suitable for a frame type wharf; the arch (V-shaped) rubber fender is characterized by moderate counterforce, high energy absorption, firm installation and convenient application to various wharfs; the DA type rubber fender has the characteristics of high energy absorption and low counter force, the product has higher stress dispersibility and long service life, the front end is provided with the defending plate to reduce the surface pressure, the specification is complete, the installation modes are various, the replacement is convenient, and the drum type rubber fender has the characteristics of low counter force, large energy absorption, surface pressure below 25 tons/m & lt 2 & gt and small reduction of the inclined compression mechanical property; the n-shaped rubber fender is characterized by low counterforce, large energy absorption, convenient installation and good space distribution, and is generally suitable for large and medium wharfs.
The prior art has the following defects and shortcomings:
1. when the fender is used, the fender can be subjected to the extrusion of rock or shore collision and seawater, and the internal structure of the fender can be damaged if the acting force is not buffered;
2. the structure of the shell of the fender is unstable, so that the structure of the fender is easy to break and damage when the fender is impacted by external force, and leakage is caused;
3. the existing fender only has one layer of outer shell, and the fender does not play any role if the outer shell is broken.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a rubber fender with a buffering and damping function, which can solve the problem of the existing rubber fender with the buffering and damping function; this device is through being provided with shock attenuation box, first protecting crust, second protecting crust, buffer block, first spring, second spring, first support column, second support column, connecting rod, reinforcement piece, anchor strut and reinforcement muscle, has effectively solved the unable shock attenuation of fender and has cushioned the impact force, the unstable fragile easy breakage of structure and if meet with huge striking fender shell and destroy then the unable problem that continues to use of fender after.
In order to achieve the purpose of the rubber fender with the buffering and shock-absorbing functions, the invention provides the following technical scheme: a rubber fender with buffering and shock absorbing functions comprises an installation main board, wherein a first shock absorption box protective shell and a second shock absorption box protective shell are arranged on one side of the top end of the installation main board, a first connecting column is fixedly connected on one side inside the shock absorption box, a first spring is arranged on the surface of the first connecting column, a shock absorption block is arranged at one end of the first spring, a buffer block is fixedly connected on one side of the shock absorption block, a groove is formed in the bottom end of the buffer block, a second connecting column is fixedly connected on one side inside the groove, a second spring and a moving block are arranged on the surface of the second connecting column, a first rotating shaft is arranged at the bottom end of the moving block, a connecting rod is hinged to one side of the first rotating shaft, a second rotating shaft is hinged to one end of the connecting rod, one side inside the shock absorption box at one end of the second rotating shaft is fixedly connected, and a second metal plate is arranged inside the first protective shell, one side of first protecting crust is provided with first connecting block and second connecting block, one side of first connecting block is provided with first support column, the inside of first support column is provided with the reinforcement piece, one side fixedly connected with stiffener of reinforcement piece, inside one side of first support column is provided with the strengthening rib, the one end fixedly connected with third connecting block of first support column, one side of third connecting block and inside one side fixed connection of second protecting crust, the inside of second protecting crust is provided with first metal sheet, the outside of second protecting crust is provided with the anticorrosion coating.
Preferably, one side of the installation mainboard is provided with installation grooves which are symmetrically distributed.
Preferably, the first protective shell is located on the outer side of the shock absorption box, and the second protective shell is located on the outer side of the first protective shell.
Preferably, the first spring is located on the outer surface of the first connecting column, and the first spring is distributed at two ends of the shock absorption block.
Preferably, a hole is formed in one side of the damping block, and the first connecting column is connected with the surface of the hole in a sliding mode.
Preferably, the moving block is located on one side of the second spring, and the inner side of the moving block is in sliding connection with the surface of the second connecting column.
Preferably, the inside one side of shock attenuation box is provided with the telescopic link, the expansion end of telescopic link and the bottom fixed connection of buffer block.
Preferably, the one end of stiffener and inside one side fixed connection of first support column, the strengthening rib is provided with six and evenly distributed in inside one side of first support column.
Preferably, one side fixedly connected with second support column of second connecting block, the one end of second support column and the bottom fixed connection of third connecting block, first support column is the shape of falling V with the second support column.
Compared with the prior art, the invention provides a rubber fender with a buffering and damping function, which has the following beneficial effects:
1. this rubber fender with buffering shock-absorbing function, through being provided with the damper box, first spliced pole, first spring, the snubber block, the buffer block, the second spliced pole, the second spring, the movable block, first pivot, connecting rod and second pivot, meet with the striking when the fender after, in its impact force can transmit the buffer block, the buffer block then moves to the inboard, at this moment, the snubber block extrudees to first spring department, and the effort of buffer block passes through connecting rod and telescopic link and moves downwards, pull the movable block with connecting rod articulated first pivot and extrude to the second spring, through the extrusion to first spring and second spring carry out the fast buffering to the impact force, make the vibrations of striking alleviate, the impact force that this device can the fast buffering striking brought, and can alleviate the vibrations of fender and hull.
2. This rubber fender with buffering shock-absorbing function, through being provided with first connecting block, the second connecting block, first support column, the second support column, the third connecting block, the reinforcement piece, stiffener and strengthening rib, through be provided with first support column and second support column between first protecting crust and second protecting crust, first support column and second support column are the structure of falling V-arrangement, can effectually resist the impact, and be provided with the reinforcement piece in the first support column, stiffener and strengthening rib, the reinforcement piece provides the holding power for first support column body through the stiffener, strengthening rib evenly distributed is in the inboard of first support column, can prevent that first support column from splitting, this device is provided with the reinforcement subassembly, can prevent that the fender from suffering to be destroyed easily after the striking.
3. The rubber fender with the buffering and damping functions is provided with a first protective shell, a second protective shell, a first metal plate, a second metal plate and an anti-corrosion layer, wherein the second protective shell is positioned on the outermost layer, the surface of the second protective shell is provided with an anti-corrosion layer which can prevent the surface of the second protective shell from being corroded and oxidized, the first metal plate is arranged in the second protective shell, the toughness of the second protective shell is enhanced, the second protective shell is difficult to puncture in collision, and if the second protective shell is subjected to heavy impact, the second protective shell is damaged, its first protective housing just reveals for first protective housing carries out the guard action, and is same, is provided with the second metal sheet in the first protective housing, can strengthen the toughness of first protective housing, makes it can continue to protect for the fender until when maintaining the change, and the problem just can't be used after the fender is suffered huge striking can be avoided to this device.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an enlarged view of the structure at A in FIG. 1 according to the present invention;
FIG. 3 is an enlarged view of the structure at B in FIG. 1 according to the present invention;
FIG. 4 is a schematic view of the construction of the snubber block of the present invention;
FIG. 5 is a sectional view of the first support post according to the present invention;
fig. 6 is a schematic structural view of the first support column of the present invention.
In the figure: 1. installing a main board; 2. mounting grooves; 3. a shock-absorbing box; 4. a first connecting column; 5. a first spring; 6. a damper block; 7. a buffer block; 8. a groove; 9. a second connecting column; 10. a second spring; 11. a moving block; 12. a first rotating shaft; 13. a connecting rod; 14. a second rotating shaft; 15. a telescopic rod; 16. a first protective shell; 17. a first connection block; 18. a second connecting block; 19. a first support column; 20. a second support column; 21. a third connecting block; 22. a reinforcing block; 23. a reinforcing bar; 24. reinforcing ribs; 25. a hole; 26. a second protective shell; 27. a first metal plate; 28. an anti-corrosion layer; 29. a second metal plate.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-6, a rubber fender with buffering and shock absorbing functions comprises a mounting main board 1, a shock absorbing box 3, a first protective shell 16 and a second protective shell 26 are arranged on one side of the top end of the mounting main board 1, a first connecting column 4 is fixedly connected to one side inside the shock absorbing box 3, a first spring 5 is arranged on the surface of the first connecting column 4, a shock absorbing block 6 is arranged at one end of the first spring 5, a buffer block 7 is fixedly connected to one side of the shock absorbing block 6, a groove 8 is formed in the bottom end of the buffer block 7, a second connecting column 9 is fixedly connected to one side inside the groove 8, a second spring 10 and a moving block 11 are arranged on the surface of the second connecting column 9, a first rotating shaft 12 is arranged at the bottom end of the moving block 11, a connecting rod 13 is hinged to one side of the first rotating shaft 12, a second rotating shaft 14 is hinged to one end of the connecting rod 13, and one side inside the shock absorbing box 3 is fixedly connected to one side inside of the second rotating shaft 14, the inside of first protecting crust 16 is provided with second metal sheet 29, one side of first protecting crust 16 is provided with first connecting block 17 and second connecting block 18, one side of first connecting block 17 is provided with first support column 19, the inside of first support column 19 is provided with reinforcement block 22, one side fixedly connected with stiffener 23 of reinforcement block 22, inside one side of first support column 19 is provided with strengthening rib 24, the one end fixedly connected with third connecting block 21 of first support column 19, one side of third connecting block 21 and inside one side fixed connection of second protecting crust 26, the inside of second protecting crust 26 is provided with first metal sheet 27, the outside of second protecting crust 26 is provided with anti-corrosion coating 28.
In summary, one side of the installation main board 1 is provided with installation grooves 2, the installation grooves 2 are symmetrically distributed, and the installation main board 1 is convenient to install on the ship body due to the installation grooves 2; the first protective shell 16 is positioned on the outer side of the shock absorption box 3, and the second protective shell 26 is positioned on the outer side of the first protective shell 16 and used for resisting impact and protecting a ship body; the first springs 5 are positioned on the outer surface of the first connecting column 4, the first springs 5 are distributed at two ends of the damping block 6, and the impact force is weakened for the damping block 6 through the elastic force of the first springs 5; one side of the damping block 6 is provided with a hole 25, the first connecting column 4 is in sliding connection with the surface of the hole 25, the diameter of the hole 25 is slightly larger than that of the first connecting column 4, the first spring 5 cannot enter the hole 25, and the first connecting column 4 can conveniently enter the hole; the moving block 11 is positioned at one side of the second spring 10, and the inner side of the moving block 11 is in sliding connection with the surface of the second connecting column 9, so that the moving block 11 can slide under stress; a telescopic rod 15 is arranged on one side inside the shock absorption box 3, the movable end of the telescopic rod 15 is fixedly connected with the bottom end of the buffer block 7, and the telescopic rod 15 plays a role in buffering; one end of the reinforcing rod 23 is fixedly connected with one side of the inside of the first supporting column 19, and six reinforcing ribs 24 are uniformly distributed on one side of the inside of the first supporting column 19, so that the toughness of the first supporting column 19 is enhanced; one side fixedly connected with second support column 20 of second connecting block 18, the one end of second support column 20 and the bottom fixed connection of third connecting block 21, first support column 19 is the shape of falling V with second support column 20, increases the steadiness of structure, if meet the striking, then can be better resist, prevent that second protecting crust 26 from being collided and collapsing.
The working and using process and the installation method of the invention are that when the rubber fender with the buffering and damping functions is used, the rubber fender is provided with the damping box 3, the first connecting column 4, the first spring 5, the damping block 6, the buffer block 7, the second connecting column 9, the second spring 10, the moving block 11, the first rotating shaft 12, the connecting rod 13 and the second rotating shaft 14, when the fender is impacted, the impact force is transmitted into the buffer block 7, the buffer block 7 moves inwards, at the moment, the damping block 6 extrudes to the first spring 5, the acting force of the buffer block 7 moves downwards through the connecting rod 13 and the telescopic rod 15, the first rotating shaft 12 hinged with the connecting rod 13 pulls the moving block 11 to extrude to the second spring 10, the impact force is quickly buffered through the extrusion of the first spring 5 and the second spring 10, the impact vibration of the impact is relieved, and the impact force caused by the impact can be quickly buffered, the vibration of the fender and the ship body can be reduced; the first connecting block 17, the second connecting block 18, the first supporting column 19, the second supporting column 20, the third connecting block 21, the reinforcing block 22, the reinforcing rod 23 and the reinforcing rib 24 are arranged, the first supporting column 19 and the second supporting column 20 are arranged between the first protective shell 16 and the second protective shell 26, the first supporting column 19 and the second supporting column 20 are of inverted V-shaped structures, impact force can be effectively resisted, the reinforcing block 22, the reinforcing rod 23 and the reinforcing rib 24 are arranged in the first supporting column 19, the reinforcing block 22 provides supporting force for the first supporting column 19 through the reinforcing rod 23, the reinforcing rib 24 is uniformly distributed on the inner side of the first supporting column 19, the first supporting column 19 can be prevented from being broken, and the fender can be prevented from being easily damaged after being impacted; through being provided with first protective housing 16, second protective housing 26, first metal sheet 27, second metal sheet 29 and anti-corrosion coating 28, second protective housing 26 is located the outermost, its surface is provided with anti-corrosion coating 28, can avoid second protective housing 26 surface to be corroded the oxidation, and the inside of second protective housing 26 is provided with first metal sheet 27, the toughness of second protective housing 26 has been strengthened, make it be difficult to pierce through in the collision, if suffer great striking, make second protective housing 26 destroyed, its first protective housing 16 just shows out, make first protective housing 16 carry out the guard action, and is the same, be provided with second metal sheet 29 in the first protective housing 16, can strengthen the toughness of first protective housing 16, make it can continue to protect for the fender when changing, can avoid the fender to be unable to use after suffering huge striking.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. The utility model provides a rubber fender with buffering shock-absorbing function which characterized in that: the damping device comprises a mounting main board (1), a damping box (3), a first protective shell (16) and a second protective shell (26) are arranged on one side of the top end of the mounting main board (1), a first connecting column (4) is fixedly connected to one side of the interior of the damping box (3), a first spring (5) is arranged on the surface of the first connecting column (4), a damping block (6) is arranged at one end of the first spring (5), a buffering block (7) is fixedly connected to one side of the damping block (6), a groove (8) is formed in the bottom end of the buffering block (7), a second connecting column (9) is fixedly connected to one side of the interior of the groove (8), a second spring (10) and a moving block (11) are arranged on the surface of the second connecting column (9), a first rotating shaft (12) is arranged at the bottom end of the moving block (11), and a connecting rod (13) is hinged to one side of the first rotating shaft (12), one end of the connecting rod (13) is hinged with a second rotating shaft (14), one side of the inside of the one end damping box (3) of the second rotating shaft (14) is fixedly connected, a second metal plate (29) is arranged inside the first protective shell (16), one side of the first protective shell (16) is provided with a first connecting block (17) and a second connecting block (18), one side of the first connecting block (17) is provided with a first supporting column (19), a reinforcing block (22) is arranged inside the first supporting column (19), one side of the reinforcing block (22) is fixedly connected with a reinforcing rod (23), one side of the inside of the first supporting column (19) is provided with a reinforcing rib (24), one end of the first supporting column (19) is fixedly connected with a third connecting block (21), one side of the third connecting block (21) is fixedly connected with one side of the inside of the second protective shell (26), a first metal plate (27) is arranged inside the second protective shell (26), and an anti-corrosion layer (28) is arranged on the outer side of the second protective shell (26).
2. The rubber fender with the buffering and shock-absorbing functions as claimed in claim 1, is characterized in that: mounting groove (2) have been seted up to one side of installation mainboard (1), mounting groove (2) are the symmetric distribution.
3. The rubber fender with the buffering and shock-absorbing functions as claimed in claim 1, is characterized in that: the first protective shell (16) is located on the outer side of the shock absorption box (3), and the second protective shell (26) is located on the outer side of the first protective shell (16).
4. The rubber fender with the buffering and shock-absorbing functions as claimed in claim 1, is characterized in that: the first spring (5) is located on the outer surface of the first connecting column (4), and the first spring (5) is distributed at two ends of the damping block (6).
5. The rubber fender with the buffering and shock-absorbing functions as claimed in claim 1, is characterized in that: one side of the damping block (6) is provided with a hole (25), and the first connecting column (4) is connected with the surface of the hole (25) in a sliding mode.
6. The rubber fender with the buffering and shock-absorbing functions as claimed in claim 1, is characterized in that: the moving block (11) is located on one side of the second spring (10), and the inner side of the moving block (11) is connected with the surface of the second connecting column (9) in a sliding mode.
7. The rubber fender with the buffering and shock-absorbing functions as claimed in claim 1, is characterized in that: the shock absorption box is characterized in that a telescopic rod (15) is arranged on one side of the interior of the shock absorption box (3), and the movable end of the telescopic rod (15) is fixedly connected with the bottom end of the buffer block (7).
8. The rubber fender with the buffering and shock-absorbing functions as claimed in claim 1, is characterized in that: one end of the reinforcing rod (23) is fixedly connected with one side of the interior of the first supporting column (19), and the reinforcing ribs (24) are provided with six reinforcing ribs and are evenly distributed on one side of the interior of the first supporting column (19).
9. The rubber fender with the buffering and shock-absorbing functions as claimed in claim 1, is characterized in that: one side fixedly connected with second support column (20) of second connecting block (18), the one end of second support column (20) and the bottom fixed connection of third connecting block (21), first support column (19) are the shape of falling V with second support column (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110857283.1A CN113605316A (en) | 2021-07-28 | 2021-07-28 | Rubber fender with buffering shock-absorbing function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110857283.1A CN113605316A (en) | 2021-07-28 | 2021-07-28 | Rubber fender with buffering shock-absorbing function |
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| Publication Number | Publication Date |
|---|---|
| CN113605316A true CN113605316A (en) | 2021-11-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110857283.1A Pending CN113605316A (en) | 2021-07-28 | 2021-07-28 | Rubber fender with buffering shock-absorbing function |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115258079A (en) * | 2022-08-03 | 2022-11-01 | 江苏西尔特橡胶股份有限公司 | Good and stand wear and tear rubber fender of stability |
-
2021
- 2021-07-28 CN CN202110857283.1A patent/CN113605316A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115258079A (en) * | 2022-08-03 | 2022-11-01 | 江苏西尔特橡胶股份有限公司 | Good and stand wear and tear rubber fender of stability |
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