CN112111999B - Railway integral ballast bed with good shock absorption - Google Patents
Railway integral ballast bed with good shock absorption Download PDFInfo
- Publication number
- CN112111999B CN112111999B CN202010978800.6A CN202010978800A CN112111999B CN 112111999 B CN112111999 B CN 112111999B CN 202010978800 A CN202010978800 A CN 202010978800A CN 112111999 B CN112111999 B CN 112111999B
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- Prior art keywords
- fixedly connected
- mounting
- base plate
- buffer
- rail
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B3/00—Transverse or longitudinal sleepers; Other means resting directly on the ballastway for supporting rails
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B1/00—Ballastway; Other means for supporting the sleepers or the track; Drainage of the ballastway
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B19/00—Protection of permanent way against development of dust or against the effect of wind, sun, frost, or corrosion; Means to reduce development of noise
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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
- F16F15/022—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 dampers and springs in combination
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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
- F16F15/023—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 fluid means
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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
- F16F15/08—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 rubber springs ; with springs made of rubber and metal
- F16F15/085—Use of both rubber and metal springs
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Railway Tracks (AREA)
Abstract
The invention discloses a railway integral ballast bed with good shock absorption, which comprises a sleeper, wherein rails are arranged on two sides above the sleeper, mounting blocks fixedly connected with the sleeper are arranged on two sides of the bottom of each rail, and mounting bolts penetrating through the mounting blocks are arranged on the mounting blocks; bolt holes are formed in the positions, corresponding to the mounting bolts, of the sleepers; the rail buffer mechanism comprises six mounting holes uniformly formed in the bolt holes, a rail buffer spring is fixedly connected to the bottom of each mounting hole, and the other end of each rail buffer spring is fixedly connected with the elastic shaft. Compare in traditional railway ballast bed, this railway ballast bed shock attenuation effect is better showing for the train traveles safelyr.
Description
Technical Field
The invention relates to the technical field of railway equipment, in particular to a railway integral ballast bed with good shock absorption.
Background
The track bed is an important component of the track and is the foundation of the track frame. The ballast bed is usually a ballast bed laid on the underlying surface of the railroad ties. The sleeper supporting device has the main effects of supporting the sleeper, uniformly transmitting the huge pressure on the upper part of the sleeper to a roadbed, fixing the position of the sleeper, preventing the sleeper from longitudinally or transversely moving, greatly reducing the deformation of the roadbed, simultaneously relieving the impact of locomotive wheels on steel rails and facilitating drainage. And the whole railway roadbed of traditional railway, the shock attenuation effect is relatively poor, brings the potential safety hazard for the train traveles.
Disclosure of Invention
The present invention is to provide a monolithic railway ballast bed with excellent shock absorption to solve the above problems.
In order to achieve the purpose, the invention provides the following technical scheme:
a railway integral ballast bed with good shock absorption performance comprises a sleeper, rails are arranged on two sides above the sleeper, mounting blocks fixedly connected with the sleeper are arranged on two sides of the bottom of each rail, and mounting bolts penetrating through the mounting blocks are arranged on the mounting blocks; bolt holes are formed in the positions, corresponding to the mounting bolts, of the sleepers; bolt hole and construction bolt between be provided with rail buffer gear, rail buffer gear including evenly setting up six mounting holes in the bolt hole, mounting hole bottom fixedly connected with rail buffer spring, the rail buffer spring other end and elastic shaft fixed connection.
As a further scheme of the invention: sleeper below fixedly connected with base plate, the base plate is hollow structure, the vertical rubber column of placing of its inside evenly distributed, the space between rubber column and base plate inner chamber fixed connection and the rubber column packs the cushion resin.
As a further scheme of the invention: the base plate bottom both sides fixedly connected with T shape pole, T shape pole below still is provided with vertical buffering storehouse, T shape pole and vertical buffering storehouse sliding connection and its bottom run through vertical buffering storehouse, vertical buffering storehouse inner chamber bottom and T shape pole bottom still fixedly connected with vertical buffer spring.
As a further scheme of the invention: the base plate bottom still be provided with the base, base and vertical surge bin bottom fixed connection, and the level is provided with both ends all with base fixed connection's horizontal pole, two horizontal poles be provided with respectively with horizontal pole sliding connection's slider, still be provided with the connecting rod between slider and the base plate, the connecting rod both ends are connected in slider and base plate rotation respectively.
As a further scheme of the invention: the horizontal pole both sides be provided with horizontal surge bin, the slider outside run through horizontal surge bin and with it sliding connection, fixedly connected with horizontal buffer spring between slider and the horizontal surge bin inner chamber bottom, horizontal buffer spring encircles the horizontal pole outside.
As a further scheme of the invention: and buffer solutions are filled in the transverse buffer bin and the vertical buffer bin.
As a further scheme of the invention: the base bottom be provided with the water course, base central point puts and is provided with the mouth that leaks.
Compared with the prior art, the invention has the beneficial effects that:
1. the train is first in contact with the rails during operation, and thus the vibrations of the rails are most severe. Although the rail is fixed through the mounting block and the mounting bolt which are fixedly connected to the sleeper, the rail is damaged due to long-time severe vibration, the service life is shortened, the mounting bolt is broken or the mounting block falls off possibly, and potential safety hazards are brought to train running. The provision of rail damping means in the mounting bolts and bolt holes in the sleepers is therefore effective in ameliorating the aforementioned undesirable effects. When the rail vibrates, the mounting block and the mounting bolt are driven to vibrate together, the mounting bolt can extrude the elastic shaft in the bolt hole when vibrating, and the elastic shaft extrudes the rail damping spring at the bottom of the mounting hole, so that the vibration is weakened for the first time to achieve the aim of damping.
2. The base plate is arranged below the sleeper, and the hollow mechanism of the base plate, the rubber column fixedly connected with the interior of the hollow mechanism of the base plate and the filled buffer resin ensure the structural stability of the base plate and endow the base plate with certain damping and buffering performances. Vibrations are attenuated a second time as they are transmitted down the tie to the baseplate after being first attenuated by the rail dampening mechanism.
3. After being weakened by the base plate for the second time, the vibration is transmitted to the T-shaped rod, so that the T-shaped rod is pressed to move downwards to press the vertical buffer spring. Meanwhile, the base plate can press the connecting rod to move downwards, and when the connecting rod moves downwards, the sliding block can be pushed to move towards two sides along the transverse rod to press the transverse buffer spring, so that the vibration is weakened for the third time. And the transverse buffer bin and the vertical buffer bin are filled with buffer solution, and the buffer solution is viscous liquid with high viscosity. Therefore, the T-shaped rod, the sliding block, the vertical damping spring and the transverse damping spring can be subjected to the resistance of the buffer solution in the movement process, so that the vibration is weakened for the fourth time.
4. When meeting rainy or snowy weather, the inside sewage that can get into of base, sewage then can make spare parts such as connecting rod, horizontal pole corrosion to reduce its life. And the bottom is provided with a water channel and a water leakage opening, so that the water channel and the water leakage opening can be timely discharged from the inside of the base, and the parts are prevented from being corroded.
Drawings
Fig. 1 is a schematic view of the general structure of a true railway ballast bed with good shock absorption.
Fig. 2 is a schematic structural view of a rail buffer mechanism.
Fig. 3 is a schematic structural diagram of a slider.
In the figure: 1-rail, 2-sleeper, 3-mounting bolt, 4-baseplate, 5-T-shaped rod and 6-base
7-vertical buffer spring, 8-horizontal buffer spring, 9-water channel, 10-slide block, 11-water leakage port, 12-cross bar, 13-connecting rod, 14-horizontal buffer bin, 15-vertical buffer bin, 16-rubber column, 17-buffer resin, 18-bolt hole, 19-mounting block, 20-mounting hole, 21-rail buffer spring, 22-elastic shaft and 23-buffer solution.
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.
It should be noted that, if directional indications (such as up, down, left, right, front, and back) are provided in the embodiment of the present invention, they are only used to explain the relative position relationship between the components and the motion situation in a specific posture, and if the specific posture is changed, the directional indication is changed accordingly.
In addition, if the description of "first", "second", etc. is referred to in the present invention, it is used for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
Example 1
Referring to fig. 1 to 3, in the embodiment of the invention, the railway monolithic track bed with good shock absorption performance comprises a sleeper 2, rails 1 are arranged on two sides above the sleeper 2, mounting blocks 19 fixedly connected with the sleeper 2 are arranged on two sides of the bottom of each rail 1, and mounting bolts 3 penetrating through the mounting blocks 19 are arranged on the mounting blocks 19; bolt holes 18 are formed in the positions, corresponding to the mounting bolts 3, of the sleepers 2; bolt hole 18 and construction bolt 3 between be provided with rail buffer gear, rail buffer gear including evenly set up six mounting holes 20 in bolt hole 18, mounting hole 20 bottom fixedly connected with rail buffer spring 21, rail buffer spring 21 other end and elastic shaft 22 fixed connection. The train is firstly contacted with the rail 1 when in operation, so the vibration of the rail 1 is the most violent. Although the rail 1 is fixed by the mounting block 19 and the mounting bolt 3 fixedly connected to the sleeper 2, the rail 1 is damaged by a long-time severe vibration, the service life of the rail 1 is shortened, and the mounting bolt 3 may be broken or the mounting block 19 may fall off, thereby bringing a potential safety hazard to train running. The above-mentioned adverse effects can be effectively ameliorated by providing the rail buffer means in the mounting bolts 3 and the bolt holes 18 in the sleepers 2. When the rail 1 vibrates, the mounting block 19 and the mounting bolt 3 are driven to vibrate together, and when the mounting bolt 3 vibrates, the elastic shaft 22 in the bolt hole 18 is pressed, and the elastic shaft 22 presses the rail damping spring 21 at the bottom of the mounting hole 20, so that the vibration is weakened for the first time to achieve the purpose of damping.
Furthermore, 2 below fixedly connected with base plate 4 of sleeper, base plate 4 is hollow structure, and its inside evenly distributed vertical rubber column 16 of placing, the space between rubber column 16 and 4 inner chamber fixed connection of base plate and rubber column 16 is filled with buffer resin 17. The hollow mechanism of the substrate 4, the rubber column 16 fixedly connected with the interior of the hollow mechanism and the filled buffer resin 17 ensure the structural stability of the hollow mechanism and endow certain shock absorption and buffer performance of the hollow mechanism. Vibrations are attenuated a second time as they are transmitted along the sleepers 2 to the base plate 4 after being first attenuated by the rail damping mechanisms.
Further, 4 bottom both sides fixedly connected with T shape pole 5 of base plate, T shape pole 5 below still is provided with vertical surge bin 15, T shape pole 5 and vertical surge bin 15 sliding connection and its bottom run through vertical surge bin 15, vertical buffer bin 15 inner chamber bottom and T shape pole 5 bottom still fixedly connected with vertical buffer spring 7.
Further, 4 bottoms of base plate still be provided with base 6, base 6 and the 15 bottoms fixed connection of vertical surge bin, and the level be provided with both ends all with base 6 fixed connection's horizontal pole 12, horizontal pole 12 two be provided with respectively with horizontal pole 12 sliding connection's slider 10, still be provided with connecting rod 13 between slider 10 and the base plate 4, connecting rod 13 both ends are rotated in slider 10 and base plate 4 respectively and are connected.
Furthermore, horizontal surge bin 14 is provided with to horizontal pole 12 both sides, the slider 10 outside run through horizontal surge bin 14 and with it sliding connection, fixedly connected with horizontal buffer spring 8 between slider 10 and the horizontal surge bin 14 inner chamber bottom, horizontal buffer spring 8 encircles in the horizontal pole 12 outside.
Further, the inside of the transverse buffer bin 14 and the vertical buffer bin 15 are filled with buffer solution 23. After being weakened by the base plate 4 for the second time, the vibration is transmitted to the T-shaped rod 5, so that the T-shaped rod 5 is pressed to move downwards to press the vertical buffer spring 7. At the same time, the base plate 4 also presses the connecting rod 13 to move downwards, and when the connecting rod 13 moves downwards, the sliding block 10 is pushed to move towards two sides along the transverse rod 12 to press the transverse buffer spring 8, so that the vibration is weakened for the third time. And the transverse buffer bin 14 and the vertical buffer bin 15 are filled with buffer solution 23, and the buffer solution 23 is viscous liquid with higher viscosity. The T-bar 5, the slider 10, the vertical damping spring 7 and the lateral damping spring 8 are thus subjected to the resistance of the damping fluid 23 during their movement, which attenuates the vibrations for the fourth time.
Example 2
The embodiment is further improved on the basis of the embodiment 1, and the improvement content is as follows: the bottom of the base 6 is provided with a water channel 9, and the central position of the base 6 is provided with a water leakage port 11. When meeting rainy or snowy weather, the inside sewage that can get into of base, sewage then can make spare parts such as connecting rod, horizontal pole corrosion to reduce its life. And the bottom is provided with a water channel and a water leakage port, so that the water channel and the water leakage port can be discharged from the inside of the base in time, and the parts are prevented from being corroded.
In summary, the working principle of the invention is as follows: when a train runs, the train firstly passes through the rail 1, the rail 1 transmits vibration to the mounting block and the mounting bolt, and the vibration is weakened for the first time through the rail buffer mechanism. The vibrations are then transmitted from the sleepers 2 to the base plate 4 and are attenuated a second time by a damping mechanism inside the base plate 4. The vibration is transmitted to the T-shaped rod 5 and the connecting rod 13 by the base plate 4, the vibration is attenuated for the third time through the T-shaped rod 5 and the buffer spring at the bottom of the sliding block 10, and the buffer liquid 23 in the buffer bin exerts resistance in the process of movement of the sliding block 10, the T-shaped rod 5 and the buffer spring so as to attenuate the vibration for the fourth time.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (1)
1. The railway integral ballast bed with good shock absorption performance comprises sleepers (2), and is characterized in that rails (1) are arranged on two sides above the sleepers (2), mounting blocks (19) fixedly connected with the sleepers (2) are arranged on two sides of the bottoms of the rails (1), and mounting bolts (3) penetrating through the mounting blocks (19) are arranged on the mounting blocks (19); bolt holes (18) are formed in the positions, corresponding to the mounting bolts (3), of the sleepers (2); a rail buffer mechanism is arranged between the bolt hole (18) and the mounting bolt (3), the rail buffer mechanism comprises six mounting holes (20) which are uniformly arranged in the bolt hole (18), the bottom of each mounting hole (20) is fixedly connected with a rail buffer spring (21), and the other end of each rail buffer spring (21) is fixedly connected with an elastic shaft (22);
a base plate (4) is fixedly connected below the sleeper (2), the base plate (4) is of a hollow structure, vertically arranged rubber columns (16) are uniformly distributed in the base plate, the rubber columns (16) are fixedly connected with the inner cavity of the base plate (4), and gaps among the rubber columns (16) are filled with buffer resin (17);
the two sides of the bottom of the base plate (4) are fixedly connected with T-shaped rods (5), vertical buffering bins (15) are further arranged below the T-shaped rods (5), the T-shaped rods (5) are connected with the vertical buffering bins (15) in a sliding mode, the bottoms of the T-shaped rods penetrate through the vertical buffering bins (15), and vertical buffering springs (7) are further fixedly connected to the bottoms of inner cavities of the vertical buffering bins (15) and the bottoms of the T-shaped rods (5);
the bottom of the base plate (4) is further provided with a base (6), the base (6) is fixedly connected with the bottom of the vertical buffer bin (15), a cross rod (12) with two ends fixedly connected with the base (6) is horizontally arranged, two sliding blocks (10) in sliding connection with the cross rod (12) are respectively arranged on the cross rod (12), a connecting rod (13) is further arranged between the sliding blocks (10) and the base plate (4), and two ends of the connecting rod (13) are respectively in rotating connection with the sliding blocks (10) and the base plate (4);
the transverse buffer bin (14) is arranged on two sides of the transverse rod (12), the outer side of the sliding block (10) penetrates through the transverse buffer bin (14) and is in sliding connection with the transverse buffer bin, a transverse buffer spring (8) is fixedly connected between the sliding block (10) and the bottom of the inner cavity of the transverse buffer bin (14), and the transverse buffer spring (8) surrounds the outer side of the transverse rod (12);
buffer solutions (23) are filled in the transverse buffer bin (14) and the vertical buffer bin (15);
the water channel (9) is arranged at the bottom of the base (6), and the water leakage port (11) is arranged at the central position of the base (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010978800.6A CN112111999B (en) | 2020-09-17 | 2020-09-17 | Railway integral ballast bed with good shock absorption |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010978800.6A CN112111999B (en) | 2020-09-17 | 2020-09-17 | Railway integral ballast bed with good shock absorption |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112111999A CN112111999A (en) | 2020-12-22 |
| CN112111999B true CN112111999B (en) | 2022-09-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010978800.6A Active CN112111999B (en) | 2020-09-17 | 2020-09-17 | Railway integral ballast bed with good shock absorption |
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| CN (1) | CN112111999B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113047091A (en) * | 2021-02-23 | 2021-06-29 | 陈三香 | High-speed heavy-duty train track damping mechanism |
| CN113089390A (en) * | 2021-05-10 | 2021-07-09 | 浙江机电职业技术学院 | Track vibration reduction structure for track traffic |
| CN113235328B (en) * | 2021-05-15 | 2022-03-22 | 金龙 | Combined member for railway construction |
| CN113430873A (en) * | 2021-07-16 | 2021-09-24 | 广州吉杰士交通设施有限公司 | Rail transit damper |
| WO2023102825A1 (en) * | 2021-12-09 | 2023-06-15 | 陈献忠 | Turning mechanism of mining tractor |
| CN114917081B (en) * | 2022-04-14 | 2024-01-30 | 湖北民族大学附属民大医院 | Nursing medical bed for emergency department |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3749063B2 (en) * | 2000-02-03 | 2006-02-22 | 財団法人鉄道総合技術研究所 | Ladder sleeper and vehicle track |
| CN1297712C (en) * | 2004-07-23 | 2007-01-31 | 尹学军 | Floating road bed |
| CN102535262B (en) * | 2012-03-22 | 2014-07-09 | 河北金擘机电科技有限公司 | Elastic vibration-reduction ballast bed system |
| CN208167422U (en) * | 2018-03-08 | 2018-11-30 | 李伟民 | A kind of railroad train tie being easily installed |
| CN207958868U (en) * | 2018-03-09 | 2018-10-12 | 南京铁道职业技术学院 | A kind of good railway solid concrete roabed of damping property |
| CN208250832U (en) * | 2018-04-27 | 2018-12-18 | 中铁建工集团有限公司 | A kind of underground railway track construction |
| CN108582012B (en) * | 2018-07-24 | 2021-06-29 | 东莞市凯勒帝数控科技有限公司 | High-speed rail sleeper rack with elastic buffering function |
| CN209923688U (en) * | 2019-04-29 | 2020-01-10 | 安徽中志轨道交通装备制造有限公司 | Vibration-damping noise-reducing suspension sleeper |
| CN210889554U (en) * | 2019-11-18 | 2020-06-30 | 山东环亚液压机械有限公司 | Hydraulic cylinder uide bushing pressure buffer |
| CN111395072A (en) * | 2020-03-25 | 2020-07-10 | 江苏锡沂钢模有限公司 | High-speed railway sleeper of horizontal vertical vibration of water resistance |
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Effective date of registration: 20221102 Address after: Room 2016, Zhongtu building, No.4, beifenghuang, Haidian District, Beijing 100038 Patentee after: CHINA CIVIL ENGINEERING CONSTRUCTION Corp. Address before: Room 2016, Zhongtu building, No.4, beifenghuang, Haidian District, Beijing 100038 Patentee before: Zhou Yi |