CN108265571B - Vibration reduction fastener system - Google Patents
Vibration reduction fastener system Download PDFInfo
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- CN108265571B CN108265571B CN201710003168.1A CN201710003168A CN108265571B CN 108265571 B CN108265571 B CN 108265571B CN 201710003168 A CN201710003168 A CN 201710003168A CN 108265571 B CN108265571 B CN 108265571B
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- boss
- bolt
- positioning seat
- fastener system
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- 230000009467 reduction Effects 0.000 title description 17
- 238000013016 damping Methods 0.000 claims abstract description 33
- 238000009434 installation Methods 0.000 claims abstract description 26
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 20
- 230000001681 protective effect Effects 0.000 claims description 20
- 238000003825 pressing Methods 0.000 claims description 13
- 241001669679 Eleotris Species 0.000 claims description 10
- 229910052742 iron Inorganic materials 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 8
- 238000009417 prefabrication Methods 0.000 claims 1
- 229910000831 Steel Inorganic materials 0.000 abstract description 36
- 239000010959 steel Substances 0.000 abstract description 36
- 238000010276 construction Methods 0.000 abstract description 6
- 230000007547 defect Effects 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 20
- 239000004677 Nylon Substances 0.000 description 12
- 229920001778 nylon Polymers 0.000 description 12
- 229920001971 elastomer Polymers 0.000 description 8
- 238000010586 diagram Methods 0.000 description 7
- 239000002184 metal Substances 0.000 description 7
- 229910052751 metal Inorganic materials 0.000 description 7
- 239000000806 elastomer Substances 0.000 description 6
- 230000008859 change Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 238000004873 anchoring Methods 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000004576 sand Substances 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 210000005056 cell body Anatomy 0.000 description 2
- 238000011900 installation process Methods 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 239000002356 single layer Substances 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229920002302 Nylon 6,6 Polymers 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B9/00—Fastening rails on sleepers, or the like
- E01B9/02—Fastening rails, tie-plates, or chairs directly on sleepers or foundations; Means therefor
- E01B9/28—Fastening on wooden or concrete sleepers or on masonry with clamp members
- E01B9/30—Fastening on wooden or concrete sleepers or on masonry with clamp members by resilient steel clips
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The present disclosure relates to a vibration damping fastener system comprising a positioning seat, a rail bearing pad and a locking structure; the lower part of the positioning seat is a column body for embedding a track foundation, and the upper part of the positioning seat is a boss for connecting a bearing rail backing plate; the rail bearing backing plate is provided with an elastic strip seat and a first through hole for the boss to penetrate through; the locking structure is used for realizing locking connection between the rail bearing backing plate and the positioning seat; the application can be applied to the field of rail transit, can effectively overcome the defects existing in the prior art, can effectively reduce the cost of a fastener system, can effectively improve the integral strength and service life of a fastener, can effectively reduce the installation height of a steel rail, can further effectively avoid the condition of increasing the tunnel construction cost caused by higher installation height, and can effectively improve the transverse stability of the steel rail.
Description
Technical Field
The present application relates to the field of rail transit, but is not limited thereto, and in particular to a vibration damping fastener system.
Background
In recent years, with the rapid development of rail transit systems represented by subways, inter-city railways and the like, the tension situation of urban traffic is effectively relieved; at the same time, however, vibration and noise pollution caused by these traffic modes also bring great trouble to the production and life of people.
The steel rail fastener is used as a connecting part between the steel rail and the sleeper, and has the functions of fixing the steel rail, and meanwhile, the vibration and noise reduction function is also more and more paid attention to by people, and a series of steel rail fastener products with the vibration and noise reduction function are already introduced in the market at present. Among the numerous damping fastener products, separable double-deck damping fastener has realized that two-layer elastomer dampens and reaches higher damping effect to can conveniently realize the dismantlement of spare part and change, consequently obtain a large amount of applications, be favored in market.
In order to achieve double-layer elastomer vibration damping of rail fasteners, various documents in the prior art disclose different technical solutions; the disclosed technical schemes are that the vibration reduction effect is realized by matching two layers of iron backing plates with two layers of elastomers in the system. In the fastener system, the upper iron pad serves to carry and secure the rails, and the anchor spikes are screwed into nylon bushings secured in the ballast bed foundation and compressed against the lower iron pad to secure the fastener system to the ballast bed foundation, as is typical in the prior art block diagram of fig. 1.
According to the technical scheme in the prior art, the vibration reduction function of the two layers of elastomers can be fully exerted, and high vibration reduction amount is realized; however, during actual use, the following disadvantages still exist:
1, the double-layer vibration reduction fastener has high cost;
in the technical scheme disclosed in the prior art, two layers of metal iron backing plates are needed for the double-layer vibration damping fasteners, and the two layers of iron backing plates respectively play different roles; the two layers of metal iron backing plates are the two parts with the highest cost in the whole fastener system, and account for more than 70% of the whole cost, and compared with the single-layer metal backing plate of a common fastener, the two layers of metal backing plates are additionally added, so that the cost is greatly increased.
2, the nylon sleeve is easy to fail;
in the technical scheme disclosed in the prior art, the double-layer vibration reduction fasteners are screwed into the nylon sleeve through the anchor spikes, so that the fasteners are fixed on the ballast bed foundation; the nylon sleeve belongs to a plastic material, a threaded structure formed by the anchor spike and threads of the anchor spike cannot bear repeated disassembly and tightening, the threads of the nylon sleeve fail after tightening for several times, and the fastener cannot be firmly fixed on a ballast bed foundation, so that hidden danger is brought to driving safety.
3. The mounting height of the steel rail is higher;
in the technical scheme disclosed in the prior art, two layers of metal backing plates are arranged on the double-layer vibration reduction fasteners, and the height of the fasteners is higher, and is usually more than 14 mm; this will cause the height of the rail foot to the sleeper surface to be high; the installation height of the steel rail is high, on one hand, the section height of the subway tunnel is required to be increased, and therefore the construction cost of the tunnel is increased; on the other hand, the higher the height from the steel rail to the sleeper surface is, the poorer the transverse stability of the steel rail is, and the safety and the stability of the whole system are adversely affected.
Disclosure of Invention
The application solves the technical problem of providing the vibration reduction fastener system, which can effectively overcome the defects in the prior art, effectively reduce the cost of the fastener system, effectively improve the integral strength and service life of the fastener, effectively reduce the installation height of a steel rail, further effectively avoid the condition of increasing the tunnel construction cost caused by higher installation height, and effectively improve the transverse stability of the steel rail.
In order to solve the technical problems, the application provides a vibration reduction fastener system which comprises a positioning seat, a rail bearing backing plate and a locking structure;
the lower part of the positioning seat is a column body for embedding a track foundation, and the upper part of the positioning seat is a boss for connecting a bearing rail backing plate; the rail bearing backing plate is provided with an elastic strip seat and a first through hole for the boss to penetrate through; the locking structure is used for realizing locking connection between the bearing rail backing plate and the positioning seat.
The vibration damping fastener system can also have the following characteristics,
the device also comprises a middle elastic pad and an under-rail elastic pad; wherein,
the middle elastic pad is arranged below the rail bearing backing plate and is provided with a third through hole for the boss to penetrate; the elastic pad under the rail is arranged above the bearing rail backing plate, and the outer edge of the elastic pad under the rail is provided with an arc avoidance area matched with the first through hole.
The vibration damping fastener system can also have the following characteristics,
the locking structure comprises a clamping sleeve and a bolt; wherein,
the clamping sleeve comprises a tubular body and a flange arranged at the top end of the tubular body, wherein the tubular body is used for being inserted into an annular cavity between the first through hole and the boss, and the flange is used for pressing the rail bearing pad; the bottom of bolt is used for connecting the boss, the top of bolt is used for connecting the screens cover.
The vibration damping fastener system can also have the following characteristics,
the locking structure further comprises a locking cover plate; wherein,
the middle position of the locking cover plate is provided with a second through hole for the bolt to penetrate, the top end of the bolt is used for pressing the locking cover plate, and the outer edge of the locking cover plate is used for pressing the flange.
The vibration damping fastener system can also have the following characteristics,
the bottom end of the bolt is integrally connected with the boss; or,
the bottom end of the bolt is in threaded connection with the boss, and an internal thread groove matched with the bolt is formed in the boss; or,
the bottom of the bolt is connected with the boss in a clamping way, the bolt is a T-shaped bolt, and a T-shaped clamping groove matched with the T-shaped bolt is formed in the boss in the positioning seat.
The vibration damping fastener system can also have the following characteristics,
the top end of the bolt is provided with a nut which is used for compressing the locking cover plate; or,
the top of bolt is equipped with head structure, head structure is used for compressing tightly locking apron.
The vibration damping fastener system can also have the following characteristics,
the top of boss has seted up the installation cavity that is used for connecting locking structure, the bottom of installation cavity is equipped with the wash port.
The vibration damping fastener system can also have the following characteristics,
the tubular body is a tubular body having a non-uniform wall thickness.
The vibration damping fastener system can also have the following characteristics,
the novel elastic cushion is characterized by further comprising a protective cushion plate, wherein the protective cushion plate is arranged below the middle elastic cushion, and a fourth through hole for the boss to penetrate is formed in the protective cushion plate.
The vibration damping fastener system can also have the following characteristics,
the rail support is characterized by further comprising a height-adjusting base plate, wherein the height-adjusting base plate is arranged below the rail support.
The vibration damping fastener system can also have the following characteristics,
the rail bearing backing plate is provided with two elastic strip seats arranged diagonally and two first through holes arranged diagonally, and the midpoint of the connecting line between the centers of the two elastic strip seats is not coincident with the midpoint of the connecting line between the centers of the two first through holes.
The technical scheme of the application has the following beneficial effects:
compared with the prior art, the positioning seat can replace a lower layer iron pad plate in the prior art, so that the connection and fixation between the bearing rail pad plate and the track foundation can be realized, the total weight of the pad plate in the prior art can be effectively reduced, and the cost can be effectively saved; in addition, the mode of embedding the positioning seat can solve the problem of nylon sleeve failure caused by the fact that the anchoring spike is matched with the nylon sleeve for fixation in the existing damping fastener technology; finally, the fastener system reduces the thickness of a layer of backing plate in height, can effectively reduce the installation height of the steel rail and the section height of the tunnel, thereby effectively reducing the construction cost of the tunnel; meanwhile, the transverse stability of the steel rail can be effectively improved, and the safety and stability of the whole system are further improved.
The application can also effectively improve the vibration damping performance of the fastener system through the arrangement of the middle elastic pad and the elastic pad under the rail; the tubular body can be inserted into the annular cavity between the first through hole and the boss, so that the horizontal position of the rail bearing backing plate can be fixed; furthermore, the rail bearing backing plate can be pressed by the cooperation of the flange and the bolt, so that the position of the rail bearing backing plate in the vertical direction can be fixed; secondly, the convenient installation and fixing operation of the bearing rail backing plate can be realized through the arrangement of the bolts.
The application can also realize the adjustment of the relative position of the bearing rail backing plate and the positioning seat through the arrangement of the non-uniform wall thickness of the tubular body, thereby changing the horizontal position of the elastic strip seat on the bearing rail backing plate, and further changing the horizontal position of the steel rail fixed with the elastic strip seat, namely, the installation position of the steel rail and the relative distance of two steel rails on the rail can be changed, namely, the rail gauge adjusting function can be realized; the connecting line midpoint between the centers of the two elastic strip seats and the connecting line midpoint between the centers of the two first through holes are not coincident, the installation position of the rail bearing backing plate can be changed through rotation, the change of the horizontal position of the elastic strip seats can be realized, the installation position of the steel rail and the change of the relative distance of the steel rail can be realized, and the track gauge adjusting capability of the fastener system can be effectively improved.
The nut pressing device can also transmit the pressing of the nut to the outer edge position through the arrangement of the locking cover plate, and the top end flange of the clamping sleeve is pressed through the outer edge of the locking cover plate; the setting of accessible above-mentioned cell body can provide the independent cavity that holds boss top, can effectively guarantee the convenience of later stage operation, and then can effectively increase the height-adjusting ability of fastener.
The application can also effectively improve the connection stability of the positioning seat in the track foundation through the arrangement of the column body with the concave-convex structure, thereby effectively improving the connection stability of the whole fastener; through the arrangement of the drain holes, the internal ponding of the boss can be avoided, the condition that the service life of the part is reduced due to internal ponding corrosion can be effectively avoided, and the service life of the part can be effectively prolonged; the middle elastic pad can be protected from sand and stone possibly appearing on the sleeper through the protective pad; the height adjusting function of the fastener can be realized through the arrangement of the height adjusting base plate.
The application can further adjust the pretightening force of the middle elastic pad by adjusting the torque of the nut on the bolt or adjusting the thickness of the pretightening force adjusting gasket below the locking cover plate.
Additional features and advantages of the application will be set forth in the description which follows, and in part will be apparent from the description, or may be learned by practice of the embodiments of the application. The objectives and other advantages of the application will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
The accompanying drawings are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate and do not limit the application.
FIG. 1 is a schematic view of a prior art fastener system;
FIG. 2 is a general sectional view of a first embodiment of the present application;
FIG. 3 is a second general sectional view of the first embodiment of the present application;
FIG. 4 is a schematic diagram of a positioning seat according to a first embodiment of the present application;
FIG. 5 is a schematic diagram illustrating the connection between a positioning seat and a rail pad in accordance with a first embodiment of the present application;
FIG. 6 is a schematic structural diagram of a positioning sleeve according to a first embodiment of the present application;
FIG. 7 is a schematic view of a T-bolt according to a first embodiment of the present application;
FIG. 8 is a schematic view of a locking end cap according to a first embodiment of the present application;
fig. 9 is a schematic diagram of a locking end cap according to a second embodiment of the present application;
FIG. 10 is a schematic diagram of an intermediate elastic pad according to a first embodiment of the present application;
FIG. 11 is a schematic view of an under-rail pad according to an embodiment of the present application;
FIG. 12 is a schematic view of a protective pad according to a first embodiment of the present application;
fig. 13 is a schematic structural diagram of a positioning seat in a third embodiment of the present application;
fig. 14 is a schematic structural view of a locking end cap according to a third embodiment of the present application.
Description of the embodiments
Hereinafter, embodiments of the present application will be described in detail with reference to the accompanying drawings. It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be arbitrarily combined with each other.
Examples
As shown in connection with fig. 2-12;
the embodiment of the application provides a vibration reduction fastener system, which comprises a positioning seat 9, a rail bearing backing plate 2 and a locking structure; wherein, the lower part of the positioning seat 9 is a column 92 for embedding a track foundation, and the upper part is a boss 91 for connecting the bearing rail backing plate 2; the rail bearing backing plate 2 is provided with a spring strip seat 21 and a first through hole 22 for the boss 91 to penetrate; the locking structure is used for realizing the locking limit connection between the rail bearing backing plate 2 and the positioning seat 9.
In the concrete operation, the positioning seat 9 can be embedded into a rail foundation, so that the connection and support of the bearing rail backing plate 2 can be realized; through the arrangement of the locking structure, the connection between the rail bearing backing plate 2 and the positioning seat 9 can be realized, and the application of a single-layer metal plate can be realized; during the installation process, the elastic strip can be installed on the elastic strip seat 21, and structures such as a track gauge block and the like can be further included to fix the steel rail 1.
Compared with the prior art, the positioning seat 9 can replace a lower layer iron pad plate in the prior art, so that the connection and fixation between the rail bearing pad plate 2 and a rail foundation can be realized, the total weight of the pad plate in the prior art can be effectively reduced, and the cost can be effectively saved due to the arrangement of the positioning seat 9; in addition, the mode of embedding the positioning seat 9 can solve the problem of nylon sleeve failure caused by the fact that the anchoring spike is matched with the nylon sleeve for fixation in the existing damping fastener technology; finally, the fastener system reduces the thickness of a layer of backing plate in height, can effectively reduce the installation height of the steel rail and the section height of the tunnel, thereby effectively reducing the construction cost of the tunnel; meanwhile, the transverse stability of the steel rail can be effectively improved, and the safety and stability of the whole system are further improved.
Preferably, in the present embodiment, as shown in connection with fig. 10 and 11, the intermediate elastic pad 4 and the under-rail elastic pad 3 may be further included; wherein, the middle elastic pad 4 is arranged below the rail bearing pad 2, and the middle elastic pad 4 is provided with a third through hole for the boss 91 to penetrate; the rail lower elastic pad 3 is arranged above the rail bearing backing plate 2, and the outer edge of the rail lower elastic pad 3 is provided with an arc avoidance area matched with the first through hole 22.
In the concrete operation, the damping performance of the fastener system can be effectively improved through the arrangement of the middle elastic pad 4 and the under-rail elastic pad 3; further, in this embodiment, the upper surfaces of the middle elastic pad 4 and the under-rail elastic pad 3 are provided with a plurality of columnar protrusions; the arrangement of the protrusions can generate certain deformation when bearing load so as to realize corresponding buffering and vibration reduction technical effects; furthermore, the middle elasticity and the under-rail elastic cushion can also adopt a groove type structure or other vibration reduction structures so as to realize corresponding vibration reduction functions. Meanwhile, the middle elastic pad and the under-rail elastic pad can be made of rubber, polyester elastomer or other elastic materials; in this embodiment, the intermediate elastic pad and the under-rail elastic pad are preferably made of rubber or polyester elastomer.
In this embodiment, the locking structure may include a clamping sleeve 8 and a bolt; the clamping sleeve 8 comprises a tubular body and a flange arranged at the top end of the tubular body, the tubular body is used for being inserted into an annular cavity between the first through hole 22 and the boss 91, and the flange is used for pressing the rail bearing backing plate 2; the bottom of bolt is used for connecting boss 91, and the top of bolt is used for connecting screens cover 8.
In a specific operation, as shown in fig. 6, the clamping sleeve 8 may be a clamping insulating sleeve, specifically may be a clamping nylon sleeve, and the material may be preferably glass fiber reinforced nylon 66; the tubular body can be inserted into the annular cavity between the first through hole 22 and the boss 91, so that the horizontal position of the rail bearing pad 2 can be fixed; furthermore, the rail bearing backing plate 2 can be pressed by the cooperation of the flange and the bolt, so that the position of the rail bearing backing plate 2 in the vertical direction can be fixed; secondly, the convenient installation and fixing operation of the rail bearing backing plate 2 can be realized through the arrangement of the bolts.
In the embodiment, the bottom end of the bolt is in clamping connection with the boss 91; the top of bolt is equipped with the nut, the nut is used for compressing tightly locking the apron.
In a specific operation, as shown in fig. 7, the bolt may be a T-shaped bolt 6, and a T-shaped clamping groove matched with the T-shaped bolt 6 is arranged in a boss 91 in the positioning seat 9; in the use, can insert the boss 91 with the T type tip of bolt, when the T type tip of bolt is located the T type draw-in groove department in the boss 91, rotatable T type bolt 6, the T type tip card of T type bolt 6 is gone into corresponding T type draw-in groove, can realize the stable operation of being connected between bolt and the boss 91.
In order to be able to achieve an adjustment of the rail gauge; in this embodiment, the tubular body is a tubular body with a non-uniform wall thickness, that is, the tubular body has a tubular inner wall and a tubular outer wall with geometric centers that do not coincide.
In specific operation, the tubular body is specifically a hollow cylinder, the geometric centers of the inner contour and the outer contour of the tubular body are not coincident, namely, the wall thickness of the hollow cylinder is unequal in the circumferential direction, and the clamping sleeve 8 is rotated, so that the relative position of the bearing rail backing plate 2 and the positioning seat 9 can be adjusted, the horizontal position of the elastic strip seat 21 on the bearing rail backing plate 2 is changed, and then the horizontal position of a steel rail fixed with the elastic strip seat 21 is changed, namely, the installation position of the steel rail and the relative distance of the steel rail can be changed, namely, the track gauge adjusting function can be realized. Furthermore, when the distance between the fasteners is required to be adjusted, the clamping sleeves with different wall thicknesses can be directly replaced, so that the relative positions of the bearing rail backing plate 2 and the positioning seat 9 are adjusted, and the function of adjusting the track distance is realized.
Preferably, in this embodiment, the rail-bearing pad 2 is provided with two spring-strip seats 21 disposed diagonally and two first through holes 22 disposed diagonally, and the midpoint of the connecting line between the centers of the two spring-strip seats 21 is not coincident with the midpoint of the connecting line between the centers of the two first through holes 22.
In specific operation, the midpoint of the connecting line between the centers of the two elastic strip seats 21 is not coincident with the midpoint of the connecting line between the centers of the two first through holes 22, so that the horizontal position of the elastic strip seat 21 can be changed by adjusting the mounting position of the first through holes 22 on the rail bearing backing plate 2, and further the mounting position of the steel rail and the relative distance of the steel rail can be changed, and the track gauge adjusting capability of the fastener system can be effectively improved; in addition, in this embodiment, the fastener system may be compatible with different spring strip forms, and may adopt an "e" spring strip form or an "ω" spring strip form, or other spring strip structural forms, and only the spring strip seats corresponding to different spring strips are provided on the rail bearing pad 2, so that installation of spring strips in different forms can be realized.
In order to effectively improve the locking stability of the locking structure; in this embodiment, as shown in fig. 8, the locking structure further includes a locking cover plate 7, a second through hole for penetrating a bolt is provided in the middle of the locking cover plate 7, a nut 5 is used for pressing the upper surface of the locking cover plate 7, and a spring washer and a flat washer may be further provided on the nut 5; the outer edge of the locking cover 7 is used to press the flange.
In the concrete operation, the compression of the nut 5 can be transmitted to the outer edge position through the arrangement of the locking cover plate 7, and the top end flange of the clamping sleeve 8 is compressed through the outer edge of the locking cover plate 7; in the installation process, the locking cover plate 7 can be sleeved on the bolt and pressed on the clamping sleeve 8, and then the locking of the locking cover plate 7 and the locking operation of the clamping sleeve 8 in the vertical direction can be realized by screwing the nut 5.
In this embodiment, when the fastener needs to adjust the pretightening force of the middle elastic pad 4, the pretightening force of the middle elastic pad 4 can be adjusted by adjusting the torque of the lock nut 5; or, a pretightening force adjusting gasket is arranged between the lower surface of the locking cover plate 7 and the upper surface of the boss 91 of the positioning seat 9, when pretightening force is required to be adjusted, different pretightening forces on the middle elastic pad can be realized when the nut is screwed up only by changing the thickness of the pretightening force adjusting gasket.
Preferably, in order to enable the fastener to be turned up; in this embodiment, as shown in fig. 9, a groove is formed on the lower surface of the locking cover 7, and the groove is used for accommodating the top end of the boss 91.
In a specific operation, the groove body can be provided for the accommodating cavity at the top end of the boss 91; the containing cavity can ensure that the rail bearing pad plate is still in the connection state of the boss of the positioning seat after being lifted; specifically, when the fastener needs to heighten the installation height of the steel rail, only the heightening backing plate is additionally arranged below the rail bearing backing plate (in a generalized lower direction), and the nut is screwed to a preset torque. More preferably, when the heightening base plate is additionally arranged, a cushion block for eliminating gaps is additionally arranged between the locking cover plate and the boss, and then the nut is screwed, so that the heightening function of the fastener can be realized.
In this embodiment, the column 92 in the positioning seat 9 is a column 92 with a concave-convex structure on the side wall; in specific operation, through the arrangement of the column 92 with the concave-convex structure on the side wall, the connection stability of the positioning seat 9 in the track foundation can be effectively improved, and the overall connection stability of the fastener can be effectively improved; further, the posts of two or more of the retainers in the fastener system may be connected together to increase the strength and connection stability of the retainers.
Preferably, in this embodiment, a mounting cavity for connecting the locking structure is formed at the top end of the boss, and a drain hole 93 is formed at the bottom end of the mounting cavity; as can be seen from the above description, the T-shaped slot is an installation cavity for connecting the locking structure; the bottom of the T-shaped clamping groove in the boss 91 is provided with a drain hole 93; the arrangement of the drain hole 93 can avoid water accumulation in the boss 91, can effectively avoid the condition of reduction of the life surface of the part caused by water accumulation corrosion in the boss, and can effectively improve the service life of the part.
Further, as shown in fig. 12, the fastener system further includes a protective pad, where the protective pad is disposed below the middle elastic pad 4, and the protective pad is provided with a fourth through hole for the boss 91 to penetrate.
In a specific operation, the fourth through hole on the protective pad plate can be sleeved on the boss 91 of the positioning seat 9 to form positioning of the protective pad plate; by means of the protective pad, the middle elastic pad 4 can be protected from sand and gravel possibly occurring on the sleeper; a flange can be arranged around the fourth through hole of the protective backing plate, and the arrangement of the flange can increase the mutual positioning capability between the protective backing plate and the boss 91 of the positioning seat 9; in addition, the protective pad may preferably be a sheet metal process or a plate material machined by a steel plate.
Further, the fastener system further comprises a height-adjusting base plate, and the height-adjusting base plate is arranged below the rail-bearing base plate 2; the height-adjusting base plate can also be arranged below the middle elastic pad 4; in particular, it can be placed under the protective pad, or between the intermediate elastic pad 4 and the protective pad; the height adjusting function of the fastener can be realized through the arrangement of the height adjusting base plate.
Examples
The essential difference between the second embodiment and the first embodiment is that: the connection relationship between the bolts and the protrusions is different.
In the vibration damping fastener system provided in this embodiment, the main structure is similar to that of the embodiment, and for the connection of the main structure, please refer to the first description of the embodiment, the present embodiment is intended to explain the distinction between the two.
In this embodiment, the bottom end of the bolt is integrally connected with the boss; that is, the spiral and the positioning seat are integrally formed, and the integrally formed structure can avoid the arrangement of structures such as T-shaped clamping grooves and the like and realize the stable connection of the rail bearing pad; in addition, the top end of the bolt is provided with a nut, and the nut can be provided with a spring washer and a flat washer and is used for compressing the locking cover plate.
Examples
The essential difference between the third embodiment and the first embodiment is that: the connection relationship between the bolts and the protrusions is different.
In the vibration damping fastener system provided in this embodiment, the main structure is similar to that of the embodiment, and for the connection of the main structure, please refer to the first description of the embodiment, the present embodiment is intended to explain the distinction between the two.
In this embodiment, the bottom end of the bolt is in threaded connection with the boss; the boss is provided with a threaded hole, and the bottom end of the bolt is screwed into the corresponding threaded hole, so that stable connection between the bolt and the boss of the positioning seat can be realized; the structure of the threaded connection can meet the installation of rail bearing backing plates with different thicknesses, and the adaptability of a fastener system can be effectively improved; in addition, the top of bolt is equipped with head structure, and head structure is used for compressing tightly locking apron.
Further, as shown in fig. 13 and 14, in this embodiment, a groove may be further formed on the boss of the positioning seat, and a protrusion is disposed on the corresponding locking cover plate, where the protrusion on the locking cover plate and the groove on the boss of the positioning seat are clamped with each other, so that the locking cover plate is prevented from rotating during use, and the connection stability of the locking cover plate can be effectively improved.
Compared with the prior art, the positioning seat can replace a lower layer iron pad plate in the prior art, so that the connection and fixation between the bearing rail pad plate and the track foundation can be realized, the total weight of the pad plate in the prior art can be effectively reduced, and the cost can be effectively saved; in addition, the mode of embedding the positioning seat can solve the problem of nylon sleeve failure caused by the fact that the anchoring spike is matched with the nylon sleeve for fixation in the existing damping fastener technology; finally, the fastener system reduces the thickness of a layer of backing plate in height, can effectively reduce the installation height of the steel rail and the section height of the tunnel, thereby effectively reducing the construction cost of the tunnel; meanwhile, the transverse stability of the steel rail can be effectively improved, and the safety and stability of the whole system are further improved.
The application can also effectively improve the vibration damping performance of the fastener system through the arrangement of the middle elastic pad and the elastic pad under the rail; the tubular body can be inserted into the annular cavity between the first through hole and the boss, so that the horizontal position of the rail bearing backing plate can be fixed; furthermore, the flange can be used for pressing the rail bearing backing plate, so that the rail bearing backing plate can be fixed in position in the vertical direction; secondly, the convenient installation and fixing operation of the rail bearing backing plate can be realized through the arrangement of the bolts; in the use process, the bottom end of the bolt can be connected with the boss, and the top end of the bolt is screwed with the nut.
The application can also realize the adjustment of the relative position of the bearing rail backing plate and the positioning seat through the arrangement of the non-uniform wall thickness of the tubular body, thereby changing the horizontal position of the elastic strip seat on the steel rail, namely, the installation position of the steel rail and the relative distance of the steel rail, namely, the track gauge adjusting function; the connecting line midpoint between the centers of the two elastic strip seats and the connecting line midpoint between the centers of the two first through holes are not coincident, the installation position of the rail bearing backing plate can be changed through rotation, the change of the horizontal position of the elastic strip seats can be realized, the installation position of the steel rail and the change of the relative distance of the steel rail can be realized, and the track gauge adjusting capability of the fastener system can be effectively improved.
The nut pressing device can also transmit the pressing of the nut to the outer edge position through the arrangement of the locking cover plate, and the top end flange of the clamping sleeve is pressed through the outer edge of the locking cover plate; the setting of accessible above-mentioned cell body can provide the holding cavity on boss top, can avoid screwing up the top of in-process boss top to the lower surface of locking apron and lead to the fact screw up the inefficacy, can effectively guarantee the convenience of later stage operation, can effectively increase the height-adjusting ability of fastener.
The application can also effectively improve the connection stability of the positioning seat in the track foundation through the arrangement of the column body with the concave-convex structure, thereby effectively improving the connection stability of the whole fastener; through the arrangement of the drain holes, the internal ponding of the boss can be avoided, the condition that the life surface of the part is reduced due to internal ponding corrosion can be effectively avoided, and the service life of the part can be effectively prolonged; the middle elastic pad can be protected from sand and stone possibly appearing on the sleeper through the protective pad; the fastener can be used for achieving the function of heightening through the arrangement of the heightening base plate.
In addition, the pre-buried mode mentioned in the application is a popular call and refers to the pre-buried mode with the concrete sleeper through a pre-forming method. In the actual implementation process, the positioning seat can be directly embedded into a concrete track bed foundation by a site casting method, and can be fixed into other sleepers such as a wood sleeper or a composite sleeper by other methods such as bonding, anchoring and the like; those skilled in the art can select a corresponding connection mode according to actual situations.
In the description of the present application, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.
In the description of the present specification, the terms "one embodiment," "some embodiments," "particular embodiments," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
It should be understood by those skilled in the art that, although the embodiments of the present application are disclosed above, the embodiments are merely adopted for the purpose of facilitating understanding of the embodiments of the present application, and are not intended to limit the embodiments of the present application. Any person skilled in the art can make any modification and variation in form and detail without departing from the spirit and scope of the embodiments of the application, but the scope of the embodiments of the application is defined by the appended claims.
Claims (7)
1. The damping fastener system is characterized by comprising a positioning seat, a rail bearing backing plate and a locking structure;
the lower part of the positioning seat is a column body for pre-burying a track foundation, and the pre-burying is performed with the concrete sleeper through a prefabrication method; the upper part of the positioning seat is a boss for connecting the rail bearing backing plate; the positioning seat replaces a lower layer iron pad plate in the prior art, and can realize connection and fixation between the bearing rail pad plate and a rail foundation; the rail bearing backing plate is provided with a spring strip seat and a first through hole for the boss to penetrate; the locking structure is used for realizing locking connection between the rail bearing backing plate and the positioning seat;
the damping fastener system further comprises a middle elastic pad and a rail lower elastic pad, wherein the middle elastic pad is arranged below the rail bearing backing plate, and the rail lower elastic pad is arranged above the rail bearing backing plate;
the locking structure comprises a bolt, and the bottom end of the bolt is used for connecting the boss;
the locking structure further comprises a locking cover plate; a second through hole for the bolt to penetrate is formed in the middle of the locking cover plate; the top end of the bolt is provided with a nut which is used for compressing the locking cover plate; or, the top end of the bolt is provided with a head structure, and the head structure is used for pressing the locking cover plate;
the locking structure also comprises a clamping sleeve; the clamping sleeve comprises a tubular body and a flange arranged at the top end of the tubular body, the tubular body is used for being inserted into an annular cavity between the first through hole and the boss, the flange is used for pressing the rail bearing backing plate, and the top end of the bolt is used for being connected with the clamping sleeve; the outer edge of the locking cover plate is used for pressing the flange.
2. The vibration-damping fastener system according to claim 1, wherein the intermediate resilient pad is provided with a third through hole for the boss to pass through, and the outer edge of the under-rail resilient pad is provided with an arc-shaped avoidance area matching the first through hole.
3. The vibration-damping fastener system according to claim 1, wherein,
the bottom end of the bolt is integrally connected with the boss; or,
the bottom end of the bolt is in threaded connection with the boss, and an internal thread groove matched with the bolt is formed in the boss; or,
the bottom of the bolt is connected with the boss in a clamping way, the bolt is a T-shaped bolt, and a T-shaped clamping groove matched with the T-shaped bolt is formed in the boss in the positioning seat.
4. A vibration damping fastener system according to claim 1 or 2, characterized in that,
the top of boss has seted up the installation cavity that is used for connecting locking structure, the bottom of installation cavity is equipped with the wash port.
5. The vibration-damping fastener system according to claim 1, wherein,
the tubular body is a tubular body having a non-uniform wall thickness.
6. The vibration-damping fastener system according to claim 2, wherein,
the novel elastic cushion is characterized by further comprising a protective cushion plate, wherein the protective cushion plate is arranged below the middle elastic cushion, and a fourth through hole for the boss to penetrate is formed in the protective cushion plate.
7. A vibration damping fastener system according to claim 1 or 2, characterized in that,
the rail support is characterized by further comprising a height-adjusting base plate, wherein the height-adjusting base plate is arranged below the rail support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710003168.1A CN108265571B (en) | 2017-01-03 | 2017-01-03 | Vibration reduction fastener system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710003168.1A CN108265571B (en) | 2017-01-03 | 2017-01-03 | Vibration reduction fastener system |
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| CN108265571A CN108265571A (en) | 2018-07-10 |
| CN108265571B true CN108265571B (en) | 2023-11-17 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113847318A (en) * | 2021-08-09 | 2021-12-28 | 中铁隆昌铁路器材有限公司 | Anti-loosening embedded sleeve assembly and assembling method thereof |
| CN116623477B (en) * | 2023-03-31 | 2023-11-24 | 北京首铁创联科技有限责任公司 | Combined replaceable insulation isolation system |
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