CN110295540B - Double-curved-surface support of straddle type track beam - Google Patents
Double-curved-surface support of straddle type track beam Download PDFInfo
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- CN110295540B CN110295540B CN201910627801.3A CN201910627801A CN110295540B CN 110295540 B CN110295540 B CN 110295540B CN 201910627801 A CN201910627801 A CN 201910627801A CN 110295540 B CN110295540 B CN 110295540B
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- 239000002783 friction material Substances 0.000 claims description 28
- 238000007789 sealing Methods 0.000 claims description 6
- 229910001208 Crucible steel Inorganic materials 0.000 claims description 4
- 229910000746 Structural steel Inorganic materials 0.000 claims description 4
- 229910045601 alloy Inorganic materials 0.000 claims description 4
- 239000000956 alloy Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 239000004699 Ultra-high molecular weight polyethylene Substances 0.000 claims description 3
- 239000002131 composite material Substances 0.000 claims description 3
- -1 polytetrafluoroethylene Polymers 0.000 claims description 3
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 229920000785 ultra high molecular weight polyethylene Polymers 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 2
- 238000005299 abrasion Methods 0.000 abstract description 4
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 238000009434 installation Methods 0.000 abstract description 3
- 230000009467 reduction Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000009194 climbing Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000010008 shearing Methods 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
- E01B25/00—Tracks for special kinds of railways
- E01B25/08—Tracks for mono-rails with centre of gravity of vehicle above the load-bearing rail
- E01B25/10—Mono-rails; Auxiliary balancing rails; Supports or connections for rails
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/04—Bearings; Hinges
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Vibration Prevention Devices (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The double-curved-surface support of the straddle type track beam comprises an inverted U-shaped upper pendulum and a positive U-shaped lower pendulum, wherein the upper pendulum is installed opposite to the lower pendulum, the lower pendulum is fixedly connected with an embedded plate and an anchor box of a supporting seat, the upper pendulum is connected with the lower pendulum through a structure shaft installed on the upper pendulum swing arm and the lower pendulum swing arm, a sliding shaft of the structure shaft is installed in a central long groove of the lower pendulum swing arm so as to form a sliding friction pair of the upper and lower pendulum, and an upper curved surface and a lower curved surface of the double-curved-surface shaft of the structure shaft are respectively installed in square holes of the upper pendulum swing arm in a matched manner with a rotating block so as to form a rotating friction pair of the upper and lower pendulum; the upper swing arm comprises an upper swing arm part and a lower swing arm part, the lower swing arm part is connected with the upper swing arm part through a connecting bolt or a flange or a side connecting plate, a square hole for installing a rotating friction pair is formed at the interface of the lower swing arm part, and the hyperboloid support has the advantages of simple structure, reasonable design, excellent stress performance, good safety and environmental adaptability, low noise, less abrasion, long service life and convenient installation and height adjustment.
Description
Technical Field
The invention relates to a track beam support, in particular to a straddle type track beam hyperboloid support.
Background
The straddle type light rail traffic is a novel traffic form which is suitable for the development of urban traffic. In urban traffic network, compared with subways and urban railways, the straddle-type light rail has the advantages of investment saving, small occupied area, strong climbing capacity, small turning radius, low noise, good environmental protection performance and the like, so that the straddle-type light rail becomes an important mode for developing rapid rail traffic in various large and medium cities.
However, because the train runs on the monorail, the train is influenced by factors such as wind resistance, centrifugal force during turning, horizontal shearing force during earthquake and the like, and under special working conditions, the support is required to bear loads such as pulling, pressing, bending, torque reduction and the like transmitted by the beam body and reliably transmit the loads to the lower structure.
The existing straddle type track beam support adopts a roll shaft force transmission mode, and the following defects are revealed in actual engineering projects:
1. damping and noise reduction problems: the existing straddle type light rail support is of an all-steel design, does not have the functions of vibration reduction and noise reduction, and has the phenomenon of impact vibration in the rail traffic running process, so that the noise is increased, and the driving comfort level of the rail traffic is affected;
2. problem of roller wear of the movable support: because the roll shaft and the upper and lower pendulum are in line contact friction of steel-steel, vertical load, horizontal load, upward pulling force and the like are transmitted, the roll shaft is easy to wear due to fatigue stress of the roll shaft, once the roll shaft is worn, impact vibration is aggravated, the service life of the support is reduced, and the maintenance cost is increased;
3. height adjustment is difficult: most of existing straddle type light rail supports cannot be adjusted in height, few supports with adjustable heights adopt a height adjusting mode that a height adjusting screw is designed into positive and negative threads, machining is extremely difficult, accuracy is difficult to guarantee, and installation is complex;
4. the invention patent number 201821318963.6 discloses a straddle type light rail support, which is improved and optimized for the existing straddle type light rail support, namely, a cylindrical sliding block is arranged on the upper top surface of a lower hem of the support, friction pairs are arranged on the top surface and the bottom surface of the cylindrical sliding block, the cylindrical sliding block can not only transmit vertical load on the upper part, but also provide vertical rotation and horizontal sliding functions, the friction pairs play a role in vibration reduction and noise reduction, and the following defects still exist:
(1) The upper pendulum of the support and the two ends of the middle roll shaft still adopt a steel-steel line contact mode, the upward pulling force is transmitted, the roll shaft is easy to wear due to fatigue stress of the roll shaft, once the roll shaft is worn, impact vibration is aggravated, the service life of the support is reduced, and the maintenance cost is increased;
(2) When the support is subjected to tensile force, the plane tangential surface of the upper semicircle of the middle roll shaft is in steel-to-steel surface contact with the lower hem of the support, and when the support is subjected to horizontal displacement, the abrasion of the friction surface is increased, so that the vibration is increased, and the abrasion surface can be corroded and rusted.
Disclosure of Invention
The invention aims to provide a double-curved-surface support of a straddle type track beam, which can prolong the service life and the safety of the support and reduce the production cost and the maintenance cost, so as to overcome the defects existing in the prior art.
In order to solve the technical problems, the invention adopts the following technical scheme:
the double-curved-surface support of the straddle type track beam comprises an upper pendulum and a lower pendulum, wherein the upper pendulum and the lower pendulum are arranged opposite to each other, and the lower pendulum is fixedly connected with an embedded plate and an anchor box of a supporting seat through bolts; the upper pendulum is an inverted U-shaped upper pendulum, and the upper pendulum is connected with the lower pendulum through a structural shaft arranged on the upper pendulum swing arm and the lower pendulum swing arm;
the structure shaft comprises a sliding shaft and a hyperboloid shaft connected to one end of the sliding shaft or to two ends of the sliding shaft, wherein the hyperboloid shaft and the sliding shaft are coaxial, the cross section of the sliding shaft is in a waist drum shape, and the upper surface and the lower surface of the hyperboloid shaft are curved surfaces II; the sliding shaft is arranged in a central long groove of the lower swing arm, a sliding distance is reserved between the sliding shaft and the left and right groove walls of the central long groove, a friction material II is arranged between the upper and lower surfaces of the sliding shaft and the upper and lower inner walls of the central long groove, and the sliding shaft, the central long groove and the friction material II form a sliding friction pair of the upper and lower swings; the hyperboloid shaft is arranged in a square hole of the upper swing arm, the upper curved surface and the lower curved surface of the hyperboloid shaft are respectively matched with the rotating blocks, one surface of each rotating block is a plane, the surface which is matched with the curved surface II of the hyperboloid shaft in a relative way is a curved surface I, the plane of the rotating block positioned at the upper part is clung to the upper wall of the square hole, the plane of the rotating block positioned at the lower part is clung to the lower wall of the square hole, and a friction material I is arranged between the curved surface I of the rotating block and the curved surface II of the hyperboloid shaft; the hyperboloid shaft, the rotating block and the friction material I between the curved surface I and the curved surface II form a rotating friction pair of the upper and lower pendulum;
the upper swing arm is a separated swing arm and comprises a swing arm upper part and a swing arm lower part, the swing arm lower part is connected with the swing arm upper part through a connecting bolt or a flange or a side connecting plate, and the square hole is formed at the interface of the swing arm lower part and the swing arm upper part.
The further technical scheme is as follows: the upper and lower curved surfaces II of the hyperboloid shaft are either concave curved surfaces or convex curved surfaces, or one surface is concave curved surface and the other surface is convex curved surface;
when the upper curved surface II and the lower curved surface II are concave curved surfaces, the curved surface I of the rotating block is a convex curved surface corresponding to the concave curved surface of the curved surface II;
when the upper curved surface II and the lower curved surface II are both convex curved surfaces, the curved surface I of the rotating block is a concave curved surface corresponding to the convex curved surface of the curved surface II;
when one curved surface II of the hyperboloid shaft is a concave curved surface and the other curved surface II is a convex curved surface, the curved surface I of one rotating block is a convex curved surface corresponding to the concave curved surface of the hyperboloid shaft, and the curved surface I of the other rotating block is a concave curved surface corresponding to the convex curved surface of the hyperboloid shaft.
Further: the upper pendulum is a single inverted U-shaped upper pendulum, the single inverted U-shaped upper pendulum is connected with a left swing arm of the lower pendulum through a structural shaft arranged on a left swing arm of the upper pendulum, and is connected with a right swing arm of the lower pendulum through a structural shaft arranged on a right swing arm of the upper pendulum;
the structure shaft arranged on the left swing arm comprises a sliding shaft and a hyperboloid shaft connected to the left end of the sliding shaft, the sliding shaft is arranged in a central long groove of the left swing arm of the lower swing, and the upper and lower curved surfaces of the hyperboloid shaft are respectively matched with the rotating block and are arranged in a square hole of the left swing arm of the upper swing; the structure shaft arranged on the right swing arm comprises a sliding shaft and a hyperboloid shaft connected to the right end of the sliding shaft, the sliding shaft is arranged in a central long groove of the right swing arm of the lower swing, and the upper and lower curved surfaces of the hyperboloid shaft are respectively matched with the rotating block and are arranged in a square hole of the right swing arm of the upper swing;
the left side of left swing arm square hole and the right side of right swing arm square hole are equipped with the shrouding that seals square hole drill way, and the right side of lower left swing arm center elongated slot and the left side of lower right swing arm center elongated slot are equipped with the shrouding that seals the long notch in center.
Further: the upper pendulum is a double inverted U-shaped upper pendulum with symmetrical structure, and comprises a left inverted U-shaped upper pendulum and a right inverted U-shaped upper pendulum;
the left-falling U-shaped upper pendulum is connected with the left swing arm of the lower pendulum through a structure shaft arranged on the two swing arms of the left-falling U-shaped upper pendulum, the structure shaft comprises a sliding shaft and hyperboloid shafts connected to the two ends of the sliding shaft, the sliding shaft of the structure shaft is arranged in a central long groove of the left swing arm of the lower pendulum, and the upper and lower curved surfaces of the hyperboloid shafts at the two ends of the sliding shaft are respectively arranged in square holes of the two swing arms of the left-falling U-shaped upper pendulum in a matched manner with a rotating block;
the right inverted U-shaped upper pendulum is connected with the right swing arm of the lower pendulum through a structure shaft arranged on the two swing arms of the right inverted U-shaped upper pendulum, the structure shaft comprises a sliding shaft and hyperboloid shafts connected to the two ends of the sliding shaft, the sliding shaft of the structure shaft is arranged in a central long groove of the right swing arm of the lower pendulum, and the upper and lower curved surfaces of the hyperboloid shafts at the two ends of the sliding shaft are respectively arranged in square holes of the two swing arms of the right inverted U-shaped upper pendulum in a matched manner with the rotating block;
a sealing plate for sealing the orifice of the square hole is arranged on the left side or the right side of the square hole of the two swing arms of the left-falling U-shaped upper pendulum and the right-falling U-shaped upper pendulum.
Still further: a cam plate and a backing plate are arranged between the bottom surface of the lower hem and the embedded plate of the supporting seat; the upper pendulum, the lower pendulum, the structural shaft and the rotating block are made of low-alloy high-strength structural steel or cast steel materials, and the friction material I and the friction material II are three layers of composite plates, tetrafluoro plates, modified polytetrafluoroethylene, modified ultra-high molecular weight polyethylene or stainless steel plates.
By adopting the technical scheme, the hyperboloid support of the straddle type track beam has the following beneficial effects:
1. the double-curved-surface support of the straddle type track beam is simple in structure and reasonable in design, is provided with the sliding friction pair and the rotating friction pair, is excellent in stress performance, and has good safety, environmental adaptability and economic efficiency;
the sliding friction pair consists of a sliding shaft, a central long groove of the lower swing arm and a friction material II between the sliding shaft and the sliding shaft, and when the beam body longitudinally displaces, the upper swing part drives the rotating block and the structural shaft to slide in the central long groove of the lower swing, so that the displacement requirement of the beam body is met;
the rotating friction pair consists of a rotating block, a hyperboloid shaft of a structural shaft and a friction material I, and when the upper swinging part rotates along with the beam body, the rotating block is driven to rotate on an upper curved surface groove and a lower curved surface groove of the hyperboloid shaft so as to adapt to the corner requirement of the beam body;
when the beam body vertically displaces, the upper swinging part, the structural shaft and the lower swinging limit the occurrence of the vertical displacement of the beam body under the combined action, thereby playing the function of pulling resistance;
2. the upper part, the upper swing lower part, the lower swing, the rotating block and the sliding block are made of low alloy high strength structural steel or cast steel and other materials, so that enough strength is ensured to ensure safety; a friction material II 19 is provided between the upper and lower surfaces of the sliding shaft 71 and the upper and lower inner walls of the central elongated slot 41; the friction material I18 is arranged between the rotating block of the rotating friction pair forming the upper and lower pendulum and the curved surface of the hyperboloid shaft 72, so that the noise generated by rigid collision between the upper and lower pendulum can be greatly reduced, and the abrasion can be reduced;
3. the upper swing arm of the straddle type track beam hyperboloid support is of a separated structure, and is divided into an upper swing arm part, a lower swing arm part and a lower swing arm part which can be connected with the upper swing arm part through bolts, flanges or side connection plates, so that the installation and adjustment are convenient;
4. the cam plate and the base plate are arranged between the bottom surface of the lower hem of the straddle type track beam hyperboloid support and the embedded plate of the supporting seat, and the height of the support can be conveniently adjusted by installing different base plates.
The technical features of a cross-seat track beam hyperboloid support of the present invention are further described below with reference to the accompanying drawings and examples.
Drawings
Fig. 1 to 3 are schematic views of a hyperboloid support structure (a single inverted "U" shape upper hem) of a straddle type track beam according to an embodiment:
FIG. 1 is a front view, FIG. 2 is a sectional view of A-A of FIG. 1, and FIG. 3 is a sectional view of B-B of FIG. 2;
fig. 4 is a schematic view of the structure of the structural shaft (perspective effect);
fig. 5 to 6 are schematic views of rotating block structures:
fig. 5 is a front view, and fig. 6 is a left side view;
fig. 7 to 8 are schematic diagrams of the cooperation structure of the rotating block and the structural shaft (the upper and lower surfaces of the hyperboloid shaft are concave curved surfaces):
fig. 7 is a front view, and fig. 8 is a left side view;
fig. 9 to 10 are schematic diagrams of the lower hem structure:
FIG. 9 is a front view (perspective view), and FIG. 10 is a cross-sectional view C-C of FIG. 9;
fig. 11 to 13 are schematic diagrams of the upper swing structure:
FIG. 11 is a single inverted "U" shaped upper hem (cross-section), FIG. 12 is a double inverted "U" shaped upper hem (cross-section), and FIG. 13 is a left side view;
fig. 14 to 15 are schematic views of a hyperboloid support structure (double inverted "U" -shaped upper pendulum) of a straddle-type track beam according to a second embodiment:
FIG. 14 is a front view, and FIG. 15 is a D-D sectional view of FIG. 14;
fig. 16 is a schematic diagram of a hyperboloid support structure of a straddle-type rail beam according to a third embodiment (the upper part of the swing arm and the lower part of the swing arm are connected by a side connecting plate 2);
FIG. 17 is a schematic view of a cross-seat rail beam hyperboloid support structure according to a fourth embodiment; (one surface of the hyperboloid shaft is a concave surface and the other surface is a convex surface);
FIG. 18 is a schematic diagram of a cross-seat rail beam hyperboloid support structure (with the upper and lower surfaces of the hyperboloid shaft being convex surfaces) according to a fifth embodiment;
fig. 19 to 20 are schematic views of the cooperation structure of the rotating block and the structural shaft:
FIG. 19 shows a hyperboloid axis having a concave surface and a convex surface, and FIG. 20 shows a hyperboloid axis having both upper and lower surfaces;
in the figure:
1-upper pendulum, 111-swing arm upper portion, 112-swing arm lower portion, 102-square hole, 2-side connecting plate, 3-connecting bolt, 4-lower pendulum, 41-central elongated slot, 5-shrouding, 6-rotating block, 61-curved surface I, 7-structural shaft, 71-sliding shaft, 72-hyperboloid shaft, 721-curved surface II, 8-bolt, 9-spherical washer, 10-conical washer, 11-nut seat, 12-spherical nut, 13-locking nut, 14-anchor box, 15-cam plate, 16-backing plate, 17-embedded plate, 18-friction material I, 19-friction material II.
Detailed Description
Example one (see FIGS. 1-3)
The double-curved-surface support of the straddle type track beam comprises an upper pendulum and a lower pendulum, wherein the upper pendulum and the lower pendulum are arranged opposite to each other, and the lower pendulum is fixedly connected with a pre-buried plate 17 and an anchor box 14 of the support seat through bolts (comprising bolts 8, spherical gaskets 9, conical gaskets 10, nut seats 11, spherical nuts 12 and locking nuts 13); the upper pendulum is an inverted U-shaped upper pendulum, and the upper pendulum is connected with the lower pendulum through a structure shaft 7 arranged on the upper pendulum swing arm and the lower pendulum swing arm;
the upper pendulum is a single inverted U-shaped upper pendulum, the single inverted U-shaped upper pendulum is connected with a left swing arm of the lower pendulum through a structural shaft arranged on a left swing arm of the upper pendulum, and is connected with a right swing arm of the lower pendulum through a structural shaft arranged on a right swing arm of the upper pendulum;
the structure shaft arranged on the left swing arm comprises a sliding shaft 71 and a hyperboloid shaft 72 connected to the left end of the sliding shaft, the hyperboloid shaft and the sliding shaft are coaxial, the cross section of the sliding shaft 71 is in a waist drum shape, and the upper surface and the lower surface of the hyperboloid shaft are curved surfaces II 721; the sliding shaft 71 is arranged in the central long groove 41 of the left swing arm of the lower swing, a sliding distance is reserved between the sliding shaft 71 and the left and right groove walls of the central long groove, a friction material II 19 is arranged between the upper and lower surfaces of the sliding shaft 71 and the upper and lower inner walls of the central long groove 41, and the sliding shaft, the central long groove and the friction material II form a sliding friction pair of the upper and lower swings;
the hyperboloid shaft 72 is arranged in a square hole 102 of the upper swing left swing arm, the upper curved surface and the lower curved surface of the hyperboloid shaft 72 are respectively matched with the rotating block 6, one surface of the rotating block 6 is a plane, the surface which is arranged opposite to the curved surface II of the hyperboloid shaft in a matched manner is a curved surface I61, the plane of the rotating block positioned at the upper part is clung to the upper wall of the square hole, the plane of the rotating block positioned at the lower part is clung to the lower wall of the square hole, and a friction material I18 is arranged between the curved surface I of the rotating block and the curved surface II of the hyperboloid shaft; the hyperboloid shaft, the rotating block and the friction material I18 between the curved surface I61 and the curved surface II 721 form a rotating friction pair of the upper and lower pendulum;
the structure shaft arranged on the right swing arm comprises a sliding shaft 71 and a hyperboloid shaft 72 connected to the right end of the sliding shaft, the hyperboloid shaft and the sliding shaft are coaxial, the cross section of the sliding shaft 71 is in a waist drum shape, and the upper surface and the lower surface of the hyperboloid shaft are curved surfaces II 721; the sliding shaft 71 is arranged in the central long groove 41 of the right swing arm of the lower swing, a sliding distance is reserved between the sliding shaft 71 and the left and right groove walls of the central long groove, a friction material II 19 is arranged between the upper and lower surfaces of the sliding shaft 71 and the upper and lower inner walls of the central long groove 41, and the sliding shaft, the central long groove and the friction material II form a sliding friction pair of the upper and lower swings;
the hyperboloid shaft 72 is arranged in a square hole 102 of the upper swing right swing arm, the upper curved surface and the lower curved surface of the hyperboloid shaft 72 are respectively matched with the rotating block 6, one surface of the rotating block 6 is a plane, the surface which is arranged opposite to the curved surface II of the hyperboloid shaft in a matched manner is a curved surface I61, the plane of the rotating block positioned at the upper part is tightly attached to the upper wall of the square hole, the plane of the rotating block positioned at the lower part is tightly attached to the lower wall of the square hole, and a friction material I18 is arranged between the curved surface I of the rotating block and the curved surface II of the hyperboloid shaft; the hyperboloid shaft, the rotating block and the friction material I18 between the curved surface I61 and the curved surface II 721 form a rotating friction pair of the upper and lower pendulum;
the upper swing arm is a separated swing arm and comprises a swing arm upper part 111 and a swing arm lower part 112, wherein the swing arm lower part is connected with the swing arm upper part through a connecting bolt 3, and the square hole 102 is formed at the interface of the swing arm lower part and the swing arm upper part (at the interface of the swing arm lower part, at the interface of the swing arm upper part, or at the interface of the swing arm lower part and the swing arm upper part at the same time).
The left side of left swing arm square hole and the right side of right swing arm square hole are equipped with the shrouding 5 that seals square hole drill way, and the right side of lower left swing arm center elongated slot and the left side of lower right swing arm center elongated slot are equipped with shrouding 5 that seals the long notch in center.
A cam plate 15 and a backing plate 16 are arranged between the bottom surface of the lower hem and an embedded plate 17 of the supporting seat; the upper pendulum, the lower pendulum, the structural shaft and the rotating block are made of low-alloy high-strength structural steel or cast steel materials, and the friction material I and the friction material II are three layers of composite plates, tetrafluoro plates, modified polytetrafluoroethylene, modified ultra-high molecular weight polyethylene or stainless steel plates.
The upper curved surface II and the lower curved surface II of the hyperboloid shaft are concave curved surfaces, and the curved surface I of the rotating block is a convex curved surface corresponding to the concave curved surface II.
Example two (see FIGS. 14-15)
A straddle type rail beam hyperboloid support having substantially the same structure as that of the first embodiment except that: the upper pendulum is a double inverted U-shaped upper pendulum with symmetrical structure, and comprises a left inverted U-shaped upper pendulum and a right inverted U-shaped upper pendulum;
the left-falling U-shaped upper swing is connected with the left swing arm of the lower swing through a structure shaft arranged on the two swing arms of the left-falling U-shaped upper swing, the structure shaft comprises a sliding shaft 71 and hyperboloid shafts 72 connected with the two ends of the sliding shaft, the sliding shaft of the structure shaft is arranged in a central long groove of the left swing arm of the lower swing, and the upper and lower curved surfaces of the hyperboloid shafts at the two ends of the sliding shaft are respectively arranged in square holes of the two swing arms of the left-falling U-shaped upper swing in a matched manner with a rotating block 6;
the right inverted U-shaped upper swing is connected with the right swing arm of the lower swing through a structure shaft arranged on the two swing arms of the right inverted U-shaped upper swing, the structure shaft comprises a sliding shaft 71 and hyperboloid shafts 72 connected with the two ends of the sliding shaft, the sliding shaft of the structure shaft is arranged in a central long groove of the right swing arm of the lower swing, and the upper and lower curved surfaces of the hyperboloid shafts at the two ends of the sliding shaft are respectively arranged in square holes of the two swing arms of the right inverted U-shaped upper swing in a matched manner with a rotating block 6;
a sealing plate for sealing the orifice of the square hole is arranged on the left side or the right side of the square hole of the two swing arms of the left-falling U-shaped upper pendulum and the right-falling U-shaped upper pendulum.
The swing arm of the double inverted U-shaped upper swing with symmetrical structure is also a separated swing arm, and comprises a swing arm upper part 111 and a swing arm lower part 112, wherein the swing arm lower part is connected with the swing arm upper part through a connecting bolt 3, and the square hole 102 is formed at the interface of the swing arm lower part and the swing arm upper part (at the interface of the swing arm lower part, at the interface of the swing arm upper part, or at the interface of the swing arm lower part and the swing arm upper part at the same time).
Example III (see FIG. 16)
The structure of the cross-seat type track beam hyperboloid support is basically the same as that of the second embodiment, except that: the lower part of the swing arm of the separated upper swing is connected with the upper part of the swing arm through a side connecting plate 2 (the upper part and the lower part of the swing arm are respectively connected with the upper part and the lower part of the swing arm through the side connecting plate).
Example IV
The basic structure of the cross-seat type track beam hyperboloid support is basically the same as that of the second embodiment, except that: the upper surface II of the hyperboloid shaft is a concave surface, the lower surface II is a convex surface, the curved surface I of the upper rotating block matched with the hyperboloid shaft is a convex surface corresponding to the concave surface of the hyperboloid shaft, and the curved surface I of the lower rotating block is a concave surface corresponding to the convex surface of the hyperboloid shaft (see figures 17 and 19).
Example five
The structure of the cross-seat type track beam hyperboloid support is basically the same as that of the second embodiment, except that: the upper and lower curved surfaces II of the hyperboloid shaft are both convex curved surfaces, and the curved surface I of the rotating block is a concave curved surface corresponding to the convex curved surface of the hyperboloid shaft (see fig. 18 and 20).
Claims (6)
1. The double-curved-surface support of the straddle type track beam comprises an upper pendulum (1) and a lower pendulum (4), wherein the upper pendulum and the lower pendulum are arranged oppositely, and the lower pendulum is fixedly connected with an embedded plate (17) and an anchor box (14) of the support seat through bolts;
the method is characterized in that: the upper pendulum is an inverted U-shaped upper pendulum, and the upper pendulum is connected with the lower pendulum through a structure shaft (7) arranged on the upper pendulum swing arm and the lower pendulum swing arm;
the structure shaft (7) comprises a sliding shaft (71) and hyperboloid shafts (72) connected to one end of the sliding shaft or to two ends of the sliding shaft, wherein the hyperboloid shafts and the sliding shaft are coaxial, the cross section of the sliding shaft is in a waist drum shape, and the upper surface and the lower surface of the hyperboloid shafts are curved surfaces II;
the sliding shaft (71) is arranged in a central long groove (41) of the swing arm of the lower pendulum (4), a sliding distance is reserved between the sliding shaft (71) and the left and right groove walls of the central long groove, a friction material II (19) is arranged between the upper surface and the lower surface of the sliding shaft and the upper and lower inner walls of the central long groove, and the sliding shaft, the central long groove and the friction material II form a sliding friction pair of the upper and lower pendulum;
the hyperboloid shaft (72) is arranged in a square hole (102) of the upper swing arm, the upper curved surface and the lower curved surface of the hyperboloid shaft (72) are respectively matched with the rotating block (6), one surface of the rotating block is a plane, the surface which is matched with the curved surface II of the hyperboloid shaft in a matching way is a curved surface I, the plane of the rotating block positioned at the upper part is tightly attached to the upper wall of the square hole, the plane of the rotating block positioned at the lower part is tightly attached to the lower wall of the square hole, and a friction material I (18) is arranged between the curved surface I of the rotating block and the curved surface II of the hyperboloid shaft; the hyperboloid shaft and the rotating block and the friction material I between the curved surface I and the curved surface II form a rotating friction pair of the upper and lower pendulum;
the upper swing arm is a separated swing arm and comprises a swing arm upper portion (111) and a swing arm lower portion (112), the swing arm lower portion is connected with the swing arm upper portion through a connecting bolt (3) or a flange or a side connecting plate (2), and the square hole (102) is formed in an interface of the swing arm lower portion and the swing arm upper portion.
2. A straddle type rail beam hyperboloid support according to claim 1, wherein: the upper and lower curved surfaces II of the hyperboloid shaft are either concave curved surfaces or convex curved surfaces, or one surface is concave curved surface and the other surface is convex curved surface;
when the upper curved surface II and the lower curved surface II are concave curved surfaces, the curved surface I of the rotating block is a convex curved surface corresponding to the concave curved surface of the curved surface II;
when the upper curved surface II and the lower curved surface II are both convex curved surfaces, the curved surface I of the rotating block is a concave curved surface corresponding to the convex curved surface of the curved surface II;
when one curved surface II of the hyperboloid shaft is a concave curved surface and the other curved surface II is a convex curved surface, the curved surface I of one rotating block is a convex curved surface corresponding to the concave curved surface of the hyperboloid shaft, and the curved surface I of the other rotating block is a concave curved surface corresponding to the convex curved surface of the hyperboloid shaft.
3. A straddle type rail beam hyperboloid support according to claim 2, wherein: the upper pendulum is a single inverted U-shaped upper pendulum, the single inverted U-shaped upper pendulum is connected with a left swing arm of the lower pendulum through a structural shaft (7) arranged on a left swing arm of the upper pendulum, and is connected with a right swing arm of the lower pendulum through a structural shaft arranged on a right swing arm of the upper pendulum;
the structure shaft arranged on the left swing arm comprises a sliding shaft and a hyperboloid shaft connected to the left end of the sliding shaft, the sliding shaft is arranged in a central long groove of the left swing arm of the lower swing, and the upper and lower curved surfaces of the hyperboloid shaft are respectively matched with the rotating block and are arranged in a square hole of the left swing arm of the upper swing; the structure shaft arranged on the right swing arm comprises a sliding shaft and a hyperboloid shaft connected to the right end of the sliding shaft, the sliding shaft is arranged in a central long groove of the right swing arm of the lower swing, and the upper and lower curved surfaces of the hyperboloid shaft are respectively matched with the rotating block and are arranged in a square hole of the right swing arm of the upper swing;
the left side of left swing arm square hole and the right side of right swing arm square hole are equipped with the shrouding that seals square hole drill way, and the right side of lower left swing arm center elongated slot and the left side of lower right swing arm center elongated slot are equipped with the shrouding that seals the long notch in center.
4. A straddle type rail beam hyperboloid support according to claim 2, wherein: the upper pendulum is a double inverted U-shaped upper pendulum with symmetrical structure, and comprises a left inverted U-shaped upper pendulum and a right inverted U-shaped upper pendulum;
the left-falling U-shaped upper pendulum is connected with the left swing arm of the lower pendulum through a structure shaft arranged on the two swing arms of the left-falling U-shaped upper pendulum, the structure shaft comprises a sliding shaft and hyperboloid shafts connected to the two ends of the sliding shaft, the sliding shaft of the structure shaft is arranged in a central long groove of the left swing arm of the lower pendulum, and the upper and lower curved surfaces of the hyperboloid shafts at the two ends of the sliding shaft are respectively arranged in square holes of the two swing arms of the left-falling U-shaped upper pendulum in a matched manner with a rotating block;
the right inverted U-shaped upper pendulum is connected with the right swing arm of the lower pendulum through a structure shaft arranged on the two swing arms of the right inverted U-shaped upper pendulum, the structure shaft comprises a sliding shaft and hyperboloid shafts connected to the two ends of the sliding shaft, the sliding shaft of the structure shaft is arranged in a central long groove of the right swing arm of the lower pendulum, and the upper and lower curved surfaces of the hyperboloid shafts at the two ends of the sliding shaft are respectively arranged in square holes of the two swing arms of the right inverted U-shaped upper pendulum in a matched manner with the rotating block;
a sealing plate for sealing the orifice of the square hole is arranged on the left side or the right side of the square hole of the two swing arms of the left-falling U-shaped upper pendulum and the right-falling U-shaped upper pendulum.
5. A straddle type rail beam hyperboloid support according to claim 3 or 4, wherein: a cam plate (15) and a backing plate (16) are arranged between the bottom surface of the lower pendulum and an embedded plate (17) of the supporting seat.
6. A straddle type rail beam hyperboloid support according to claim 5, wherein: the upper pendulum, the lower pendulum, the structural shaft and the rotating block are made of low-alloy high-strength structural steel or cast steel materials, and the friction material I and the friction material II are three layers of composite plates, tetrafluoro plates, modified polytetrafluoroethylene, modified ultra-high molecular weight polyethylene or stainless steel plates.
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| CN201910627801.3A CN110295540B (en) | 2019-07-12 | 2019-07-12 | Double-curved-surface support of straddle type track beam |
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| CN201910627801.3A CN110295540B (en) | 2019-07-12 | 2019-07-12 | Double-curved-surface support of straddle type track beam |
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| CN208830143U (en) * | 2018-01-05 | 2019-05-07 | 柳州东方工程橡胶制品有限公司 | A kind of straddle-type light rail support |
| CN210561689U (en) * | 2019-07-12 | 2020-05-19 | 柳州东方工程橡胶制品有限公司 | Straddle type track beam hyperboloid support |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US8484911B2 (en) * | 2006-05-12 | 2013-07-16 | Earthquake Protection Systems, Inc. | Sliding pendulum seismic isolation system |
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|---|---|---|---|---|
| CN203782549U (en) * | 2014-02-12 | 2014-08-20 | 成都西南交大通联科技产业有限公司 | Cast steel tension support for PC (polycarbonate) beam of straddle type rail transit |
| CN107881903A (en) * | 2017-11-08 | 2018-04-06 | 成都市新筑路桥机械股份有限公司 | Straddle-seat type single traffic rail beam bears hinge Column face bearing |
| CN208830143U (en) * | 2018-01-05 | 2019-05-07 | 柳州东方工程橡胶制品有限公司 | A kind of straddle-type light rail support |
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