Long-acting lubrication tension-compression spherical support for cable bridge
By setting flow channels and flow channel holes in the tension/compression spherical bearing for grease replenishment, combined with rotational fit, the problem of bearing damage caused by grease deficiency is solved, achieving long-term lubrication and vibration reduction effects, and extending the service life of the bearing.
Patent Information
- Application Number
- CN202423313704.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-31
- Publication Date
- 2026-01-30
- Estimated Expiration
- 2034-12-31
AI Technical Summary
Existing tension-compression spherical bearings in suspension bridges and cable-stayed bridges suffer from grease loss due to excessive displacement and wear, leading to structural damage and reduced lifespan.
A long-lasting lubricated tension-compression spherical bearing for cable-stayed bridges was designed. By setting a flow channel inside the convex spherical liner substrate that communicates with the outside, and setting flow channel holes on the sliding surface, lubricating grease is replenished periodically. Combined with the rotational cooperation of the convex and concave spherical liners, it adapts to changes in the bridge position and buffers and reduces vibration.
It effectively solves the problem of insufficient grease, reduces the probability of damage to the support structure, improves service life, and extends the service life of the support through lubrication and vibration reduction measures.
Smart Images
Figure CN223853157U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to bridge bearing technical field, concretely relates to a long -term lubrication pull -pressure ball type support for cable bridge. BACKGROUND
[0002] Pull -pressure ball type support with its big, flexible rotation, vertical tensile characteristics, at present, in the market is used in large quantities, its function lies in transmission load, displacement angle, ensure that the upper and lower beam body is not disjointed.
[0003] Pull -pressure ball type support in the actual operation process of suspension bridge, cable -stayed bridge appeared because of the super displacement, abrasion distance long lead to the slide plate lubricating grease loss and damage or excessive wear after the metal lock, eventually lead to the damage of bearing structure, serious life attenuation.
[0004] Bridge bearing as the joint of the whole bridge, key component, bearing safety performance and durability are directly related to the operation safety of bridge, therefore, higher requirements are put forward to bridge bearing, and developing a long -term lubrication pull -pressure ball type support for cable bridge has great significance to maintain the safety of cable bridge. UTILITY MODEL CONTENTS
[0005] The purpose of the application is to provide a long -term lubrication pull -pressure ball type support for cable bridge, solve the above technical problems existing in the prior art.
[0006] The application is achieved:
[0007] The application embodiment provides a long -term lubrication pull -pressure ball type support for cable bridge, including the first support plate, concave spherical lining base body, convex spherical lining base body and second support plate of overlapping arrangement;The first support plate and concave spherical lining base body are along the transverse sliding fit of cable bridge, and the second support plate and convex spherical lining base body are along the longitudinal sliding fit of cable bridge;The convex spherical surface of convex spherical lining base body is rotationally connected with the concave spherical surface of concave spherical lining base body, the flow channel that is communicated with the outside is arranged in the convex spherical lining base body, the surface that the convex spherical lining base body and second support plate are slidingly connected is sliding surface, and the flow channel hole that is communicated with the flow channel is arranged on the sliding surface.
[0008] The application has the beneficial effects:
[0009] In the application, the flow channel for filling the lubricating grease is arranged on the convex spherical lining base body and communicates with the outside, and the flow channel hole communicating with the flow channel is arranged on the sliding surface of the convex spherical lining base body to supplement the lubricating grease towards the sliding surface of the convex spherical lining base body, so that the problem of lubricating grease loss in the sliding position of the support during large displacement movement is solved, the situation of metal locking is avoided, the probability of damage of the support structure is reduced, and the service life of the support is improved. Moreover, the convex spherical lining base body and the concave spherical lining base body are arranged in rotational cooperation, the convex spherical lining base body is arranged in sliding cooperation with the second support plate, and the concave spherical lining base body is arranged in sliding cooperation with the first support plate, so as to adapt to the position change between the upper part of the bridge and the lower part of the bridge and buffer and absorb shock. BRIEF DESCRIPTION OF DRAWINGS
[0010] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the description of the embodiments of the present application or the prior art. Obviously, the drawings described below are only some embodiments of the present application, and other drawings can also be obtained according to these drawings without creative labor for those skilled in the art.
[0011] Figure 1 is the overall structure schematic view of the support provided by some embodiments of the present application;
[0012] Figure 2 is the structure schematic view of the longitudinal bridge direction of the support provided by some embodiments of the present application;
[0013] Figure 3 is the longitudinal bridge direction sectional view of the support provided by some embodiments of the present application;
[0014] Figure 4 is the detail view of A of the present application; Figure 3
[0015] Figure 5 is the structure schematic view of the first sliding strip provided by some embodiments of the present application;
[0016] Figure 6 is the structure schematic view of the transverse bridge direction of the support provided by some embodiments of the present application;
[0017] Figure 7 is the transverse bridge direction sectional view of the support provided by some embodiments of the present application;
[0018] Figure 8 is the detail view of B of the present application; Figure 7
[0019] Figure 9 is the structure schematic view of the second sliding strip provided by some embodiments of the present application;
[0020] Figure 10 is a split schematic view of the support provided by some embodiments of the present application;
[0021] Figure 11 is a top view of the convex spherical lining base provided by some embodiments of the present application;
[0022] Figure 12 is a sectional view of the first support plate provided by some embodiments of the present application;
[0023] Figure 13 is a structural schematic view of the anti-tensile rotation block and the first connecting member provided by some embodiments of the present application.
[0024] In the figure: 110 - first support plate, 120 - second support plate, 200 - concave spherical lining base, 210 - rotation cavity, 220 - rotation through-hole, 300 - convex spherical lining base, 310 - flow channel, 320 - flow channel hole, 400 - anti-tensile rotation block, 410 - connecting through-hole, 510 - first connecting member, 520 - second connecting member, 610 - spherical sliding plate, 620 - sliding block, 630 - upper stainless steel sliding plate, 640 - flat sliding plate, 650 - lower stainless steel sliding plate, 700 - sealing ring, 810 - first sliding bar, 820 - first side sliding bar, 830 - first pressing plate, 840 - first graphite block, 850 - first limiting block, 910 - second sliding bar, 920 - second side sliding bar, 930 - second pressing plate, 940 - second graphite block, 950 - second limiting block. DETAILED DESCRIPTION
[0025] The following description provides many different embodiments, or examples, for implementing different features of the application. Specific examples are described in enough detail to provide a thorough understanding of the application. The description of elements in each example is meant to provide an example of an implementation, not a limitation. However, specific examples are not meant to limit the application.
[0026] EMBODIMENTS
[0027] The embodiments of the present application provide a long-acting lubricated tensile and compressive spherical support for cable bridges, referring to Figures 1 to 3 , Figure 6 , Figure 7 and Figure 10As shown, it comprises a first support plate 110, a concave spherical lining base 200, a convex spherical lining base 300 and a second support plate 120 arranged in superposition. One of the first support plate 110 and the second support plate 120 is connected with the bridge upper part, and the other is connected with the bridge lower part. The first support plate 110 is slidingly fitted with the concave spherical lining base 200 along the transverse direction of the cable-stayed bridge, the second support plate 120 is slidingly fitted with the convex spherical lining base 300 along the longitudinal direction of the cable-stayed bridge, and the convex spherical surface of the convex spherical lining base 300 is rotationally connected with the concave spherical surface of the concave spherical lining base 200. In some embodiments, the concave spherical lining base 200 is entirely plated with hard chromium.
[0028] The concave spherical lining base 200 is slidingly fitted with the first support plate 110 along the transverse direction of the cable-stayed bridge, so as to adapt to the transverse position of the cable-stayed bridge, the convex spherical lining base 300 is slidingly fitted with the second support plate 120 along the longitudinal direction of the cable-stayed bridge, so as to adapt to the longitudinal position of the cable-stayed bridge, and the convex spherical lining base 300 and the concave spherical lining base 200 are rotationally fitted, so as to adapt to the position changes of the bridge upper part and the bridge lower part and to buffer and absorb shocks. Referring to Figure 1 As shown, the transverse direction of the cable-stayed bridge is represented by the direction of the x-axis, and the longitudinal direction of the cable-stayed bridge is represented by the direction of the y-axis.
[0029] Referring to Figure 11 As shown, the convex spherical lining base 300 is internally provided with a flow channel 310 in communication with the outside, and the flow channel 310 is used to be connected with a lubricating grease filling device in the outside. In specific use, the flow channel 310 is internally filled with lubricating grease. The surface of the convex spherical lining base 300 close to the concave spherical lining base 200 is a convex spherical surface, which is used to be rotationally fitted with the concave spherical lining base 200, and the surface of the convex spherical lining base 300 close to the second support plate 120 is a sliding surface, which is used to be slidingly fitted with the second support plate 120. The sliding surface is provided with a flow channel hole 320 in communication with the flow channel 310. The flow channel hole 320 is in communication with the flow channel 310, and the lubricating grease located in the flow channel 310 can flow to the sliding surface through the flow channel hole 320, so as to lubricate the sliding surface.
[0030] The flow channel 310 and the flow channel hole 320 are fitted, so as to periodically supplement the lubricating grease for the sliding surface of the convex spherical lining base 300, to solve the problem of lack of lubricating grease at the sliding position in the large displacement movement of the support, to make the convex spherical lining base 300 and the second support plate 120 can keep a low friction coefficient state for a long time, to reduce abrasion, and to increase the service life of the support.
[0031] In use, each flow channel 310 can be connected with a separate lubricating grease filling device. The lubricating grease filling device can be a manual filling device or an automatic filling machine which can be automatically filled at a certain time interval according to a program, such as a silicone grease filling machine. Alternatively, all flow channels 310 can be sequentially connected in series through a bend pipe, so that all flow channels 310 are sequentially connected in communication.
[0032] Reference Figure 3 、 Figure 7 and Figure 10 As shown in the drawings, the concave spherical lining base body 200 is internally provided with a rotating cavity 210, the rotating cavity 210 is in communication with the external environment through a rotating through hole 220, the rotating through hole 220 is arranged at the concave spherical surface of the concave spherical lining base body 200, the wall surface of the rotating cavity 210 close to the convex spherical lining base body 300 is a spherical surface, the anti-tension rotating block 400 is arranged in the rotating cavity 210, the surface of the anti-tension rotating block 400 close to the convex spherical lining base body 300 is a concave spherical surface and is in sliding fit with the spherical surface of the rotating cavity 210, and the anti-tension rotating block 400 is further provided with a connecting through hole 410, as shown in the drawings. Figure 13
[0033] The support further comprises a first connecting piece 510, the first connecting piece 510 is threadedly connected with the connecting through hole 410 and threadedly connected with the convex spherical lining base body 300 through the rotating through hole 220. The first connecting piece 510 connects the anti-tension rotating block 400, the concave spherical lining base body 200 and the convex spherical lining base body 300 into an integrated whole, so as to avoid the situation that the convex spherical lining base body 300 and the concave spherical lining base body 200 are separated due to excessive rotation angle of the support. In addition, there is a moving gap between the peripheral wall of the rotating through hole 220 and the peripheral wall of the first connecting piece 510, and there is a rotating gap between the peripheral wall of the rotating cavity 210 and the peripheral wall of the anti-tension rotating block 400.
[0034] The position of the anti-tension rotating block 400 in the rotating cavity 210 is not fixed, and the anti-tension rotating block 400 is movable in the rotating cavity 210. Since the first connecting piece 510 fixes the anti-tension rotating block 400 and the convex spherical lining base body 300 together, when the concave spherical lining base body 200 rotates relative to the convex spherical lining base body 300, the position of the anti-tension rotating block 400 is almost stable relative to the convex spherical lining base body 300, and the anti-tension rotating block 400 rotates in the rotating cavity 210, and the rotating gap provides a rotating space for the anti-tension rotating block 400. In addition, since the first connecting piece 510 passes through the rotating through hole 220, the rotating through hole 220 is located in the concave spherical lining base body 200, and the position of the first connecting piece 510 is almost unchanged relative to the convex spherical lining base body 300 and the anti-tension rotating block 400, therefore, in the case that the concave spherical lining base body 200 rotates relative to the convex spherical lining base body 300, the position of the first connecting piece 510 in the rotating through hole 220 will change, and the moving gap provides a moving space for the first connecting piece 510, so as to ensure that even if the first connecting piece 510 is connected between the convex spherical lining base body 300 and the concave spherical lining base body 200, the convex spherical lining base body 300 and the concave spherical lining base body 200 can also rotate relative to each other.
[0035] In some preferred embodiments, as shown in the drawings, Figure 3 ,Figure 7 as well as Figure 10 As shown, the end of the first connector 510 furthest from the concave spherical liner base 200 is provided with a threaded hole, that is, the end of the first connector 510 that connects to the convex spherical liner base 300 is provided with a threaded hole. A connecting groove is provided on the surface of the convex spherical liner base 300 near the second support plate 120, and the connecting groove communicates with the threaded hole. The convex spherical liner base 300 is provided with a hole that connects to the first connector 510, and this hole communicates with the connecting groove, thereby allowing the connecting groove to communicate with the threaded hole provided in the first connector 510.
[0036] The support also includes a second connector 520, which passes through the connecting groove and the threaded hole, as shown in the reference. Figure 3 As shown, it is threadedly connected to the convex spherical liner base 300 and the first connector 510, improving the connection stability between the first connector 510 and the convex spherical liner base 300. Furthermore, one of the first connector 510 and the second connector 520 has a left-hand thread structure, and the other has a right-hand thread structure. By setting the two connectors to thread structures in different directions, the second connector 520 prevents the first connector 510 from loosening during the movement of the support. Simultaneously, the second connector 520 also limits the increase in bolt preload caused by the first connector 510 rotating during the rotation of the support, thus preventing increased friction on the contact surface between the tensile rotating block 400 and the concave spherical liner base 200, making rotation difficult, and ultimately leading to seizure.
[0037] In some specific embodiments, the first connector 510 may be a right-hand threaded pull-out bolt, and the second connector 520 may be a left-hand threaded locking bolt.
[0038] In some embodiments of this application, the rotating cavity 210 penetrates the surface of the concave spherical liner base 200 near the first support plate 110, and the rotating cavity 210 forms an opening on the surface of the concave spherical liner base 200 near the first support plate 110. The tensile rotating block 400 is installed inside the rotating cavity 210 through the opening.
[0039] refer to Figure 10 As shown, a spherical sliding plate 610 is also provided between the convex spherical surface of the convex spherical liner substrate 300 and the concave spherical surface of the concave spherical liner substrate 200. The spherical sliding plate 610 reduces the friction between the concave spherical surface and the convex spherical surface and improves the smoothness of the support rotation.
[0040] The convex spherical liner has multiple flow channels 310 inside its volume. Each flow channel 310 communicates with multiple flow channel holes 320. All flow channel holes 320 are evenly distributed on the sliding surface of the convex spherical liner base 300, thereby uniformly lubricating the sliding surface. (Reference) Figure 11As shown, the inner part of the lower part of the convex spherical lining base body 300 is provided with a plurality of longitudinally extending flow channels 310, both ends of the flow channels 310 are in communication with the outside, and a plurality of vertical flow channel holes 320 in communication with the flow channels 310 are arranged on the sliding surface of the convex spherical lining base body 300. Each flow channel 310 is provided with a plurality of flow channel holes 320 arranged equidistantly along the extension direction of the flow channel 310, and all the flow channel holes 320 are uniformly distributed on the sliding surface of the convex spherical lining base body.
[0041] In some embodiments, as shown in Figure 3 , Figure 7 and Figure 10 , a stainless steel lower sliding plate 650 and a plurality of sliding blocks 620 are further arranged between the sliding surface of the convex spherical lining base body 300 and the second support plate 120. The sliding blocks 620 are embedded in the sliding surface of the convex spherical lining base body 300 and are uniformly distributed, and the stainless steel lower sliding plate 650 is fixed to the second support plate 120. In the case where a plurality of flow channel holes 320 are uniformly distributed on the sliding surface of the convex spherical lining base body 300, four sliding blocks 620 are arranged around each flow channel hole 320, so that all the flow channel holes 320 are uniformly distributed in the gap between adjacent sliding blocks 620, so as to obtain more uniform lubrication effect.
[0042] In some preferred embodiments, the axial direction of the flow channel 310 is parallel to the longitudinal direction of the cable bridge. The convex spherical lining base body 300 and the second support plate 120 slide along the longitudinal direction of the cable bridge. During the relative sliding of the convex spherical lining base body 300 and the second support plate 120, the disturbance of the lubricating grease in the flow channel 310 arranged along the longitudinal direction of the cable bridge is greater, and the lubricating grease in the flow channel 310 is more easily flowed from the flow channel hole 320 to the space between the convex spherical lining base body 300 and the second support plate 120 with the sliding of the convex spherical lining base body 300, so as to more easily lubricate the sliding plate.
[0043] In some preferred embodiments, as shown in Figure 3 , Figure 7 , Figure 10 and Figure 11As shown, the sliding surface of the convex spherical lining base body 300 is connected with a sealing ring 700, the sealing ring 700 protrudes from the sliding surface of the convex spherical lining base body 300, and in the case that the sliding surface of the convex spherical lining base body 300 is connected with the sliding block 620, the sealing ring 700 is enclosed in all sliding blocks 620 and all flow channels 310. The sealing ring 700 protrudes towards the second support plate 120 and is in sliding fit with the stainless steel lower sliding plate 650 installed on the second support plate 120 to form a dynamic sealing structure, the sealing ring 700 encloses all sliding blocks 620 and all flow channel holes 320, and cooperates with the convex spherical lining base body 300 and the second support plate 120 to form a sealed space, so that the sliding blocks 620 around the cavity in the sealed space can be pressurized and filled with lubricating grease through the lubricating grease filling equipment, so that the sliding blocks 620 can maintain long-term lubrication during movement.
[0044] In some embodiments, a stainless steel upper sliding plate 630 and a flat sliding plate 640 are arranged between the first support plate 110 and the concave spherical lining base body 200, and the stainless steel upper sliding plate 630 covers the rotating cavity 210 of the concave spherical lining base body 200. The stainless steel upper sliding plate 630 is fixed to the first support plate 110, and the flat sliding plate 640 is embedded on the side of the concave spherical lining base body 200 close to the first support plate 110, thereby reducing the sliding resistance between the concave spherical lining base body 200 and the first support plate 110.
[0045] Reference Figure 3 and Figure 4 As shown, the concave spherical lining base body 200 is provided with a first sliding strip 810 extending along the transverse direction of the cable bridge, the first support plate 110 is provided with a first side sliding strip 820 and a first pressing plate 830 extending along the transverse direction of the cable bridge, the first side sliding strip 820 and the first sliding strip 810 are arranged along the radial direction of the support, the first pressing plate 830 is located on the side of the first sliding strip 810 close to the second support plate 120, and the first sliding strip 810 is in sliding fit with the first side sliding strip 820 and the first pressing plate 830. The first side sliding strip 820 and the first pressing plate 830 cooperate to limit the sliding direction of the first support plate 110, the first sliding strip 810 is arranged to reduce the sliding resistance of the concave spherical lining base body 200, reduce the sliding loss, and improve the smoothness of sliding.
[0046] Reference Figure 5As shown, the first sliding bar 810 is provided with a plurality of first assembly holes, and a first graphite block 840 is mounted in the first assembly hole. The first graphite block 840 is fixed by embedding, which improves the stability of installation and reduces the probability of deformation of the first sliding bar 810. In some preferred embodiments, the first sliding bar 810 is made of high-strength brass. Compared with conventional materials, the first sliding bar 810 is made of high-strength brass + graphite combination, which is fixed by embedding instead of traditional welding, effectively reducing the problems of poor welding, deformation of the sliding bar after welding, and insufficient welding strength leading to damage of the sliding bar. At the same time, high-strength brass has strong wear resistance, high strength, high hardness, and strong chemical corrosion resistance. In combination with graphite, the friction coefficient during the movement of the sliding bar is reduced, long-term low wear is maintained, and the service life of the support is greatly increased.
[0047] Referring to Figure 1 , Figure 6 , Figure 7 and Figure 12 As shown, the first support plate 110 is also provided with two first limiting blocks 850, which are respectively located at two ends of the first sliding bar 810. The first limiting block 850 is in limiting cooperation with the first sliding bar 810 along the transverse direction of the cable bridge, limits the sliding distance of the concave spherical lining base body 200, and prevents the concave spherical lining base body 200 from appearing excessive sliding. In some embodiments, the first limiting block 850 can be integrally formed with the first pressing plate 830.
[0048] In some embodiments, similar to the connection between the first support plate 110 and the concave spherical lining base body 200, referring to Figure 7 and Figure 8 As shown, the convex spherical lining base body 300 is fixed with a second sliding bar 910 extending along the longitudinal direction of the cable bridge, the second support plate 120 is fixed with a second side sliding bar 920 and a second pressing plate 930 extending along the longitudinal direction of the cable bridge, the second side sliding bar 920 and the second sliding bar 910 are arranged along the radial direction of the support, the second pressing plate 930 is located on the side of the second sliding bar 910 close to the first support plate 110, and the second sliding bar 910 is in sliding cooperation with the second side sliding bar 920 and the second pressing plate 930. The second side sliding bar 920 and the second pressing plate 930 cooperate to limit the sliding direction of the second support plate 120, the second sliding bar 910 is provided to reduce the sliding resistance of the convex spherical lining base body 300, reduce the sliding loss, and improve the smoothness of sliding.
[0049] Referring to Figure 9As shown, the second sliding bar 910 is provided with a plurality of second assembly holes, and the second graphite block 940 is mounted in the second assembly holes. The second graphite block 940 is fixed by embedding, so that the stability of installation is improved, and the probability of deformation of the second sliding bar 910 is reduced. In some preferred embodiments, the second sliding bar 910 is made of high-strength brass. Compared with conventional materials, the second sliding bar 910 is made of high-strength brass + graphite combination, and is fixed by embedding instead of traditional welding, so that the problems of poor welding, deformation of the sliding bar after welding and damage of the sliding bar due to insufficient welding strength are effectively reduced. Meanwhile, the high-strength brass has strong wear resistance, high strength, high hardness and strong chemical corrosion resistance, and is combined with graphite, so that the friction coefficient during movement of the sliding bar is reduced, long-term low wear is maintained, and the service life of the support is greatly increased.
[0050] Reference Figure 1 and Figure 3 As shown, the second support plate 120 is further provided with two second limiting blocks 950, which are respectively located at two ends of the second sliding bar 910, and the second limiting block 950 is limited in cooperation with the second sliding bar 910 along the longitudinal direction of the cable bridge, so as to limit the sliding distance of the convex spherical lining plate base body 300 and prevent the convex spherical lining plate base body 300 from appearing excessive sliding.
[0051] The above only describes the preferred embodiments of the utility model, and does not limit the utility model, and any modification, equivalent replacement and improvement within the spirit and principle of the utility model should be included in the protection scope of the utility model.
Claims
1. A long-acting lubricated tensile ball-type support for a cable-stayed bridge, characterized by, The support comprises a first support plate (110), a concave spherical lining base body (200), a convex spherical lining base body (300) and a second support plate (120) arranged in a superposed manner. The first support plate (110) and the concave spherical lining base body (200) are slidably connected along the transverse direction of the cable bridge, and the second support plate (120) and the convex spherical lining base body (300) are slidably connected along the longitudinal direction of the cable bridge. The convex spherical surface of the convex spherical lining base body (300) is rotatably connected with the concave spherical surface of the concave spherical lining base body (200), the convex spherical lining base body (300) is internally provided with a flow channel (310) in communication with the outside, and the surface of the convex spherical lining base body (300) slidably connected with the second support plate (120) is a sliding surface, and the sliding surface is provided with a flow channel hole (320) in communication with the flow channel (310).
2. The long-acting lubricated tensile spherical bearing for cable bridges according to claim 1, characterized in that The concave spherical lining base body (200) is internally provided with a rotating cavity (210) in communication with the outside through a rotating through hole (220), the rotating through hole (220) is arranged at the concave spherical surface of the concave spherical lining base body (200), the wall surface of the rotating cavity (210) close to the convex spherical lining base body (300) is a spherical surface, and the rotating cavity (210) is provided with a tensile rotating block (400), the surface of the tensile rotating block (400) close to the convex spherical lining base body (300) is a concave spherical surface and slidably connected with the spherical surface of the rotating cavity (210), and the tensile rotating block (400) is further provided with a connecting through hole (410). The support further comprises a first connecting piece (510), the first connecting piece (510) is threadedly connected with the connecting through hole (410) and threadedly connected with the convex spherical lining base body (300) through the rotating through hole (220), the peripheral wall of the rotating through hole (220) and the peripheral wall of the first connecting piece (510) have a moving gap, and the peripheral wall of the rotating cavity (210) and the peripheral wall of the tensile rotating block (400) have a rotating gap.
3. The long-acting lubricated tensile ball-type support for cable bridges according to claim 2, characterized in that, The end of the first connecting piece (510) away from the concave spherical lining base body (200) is provided with a threaded hole, and the surface of the convex spherical lining base body (300) close to the second support plate (120) is provided with a connecting groove in communication with the threaded hole. The support further comprises a second connecting piece (520), the second connecting piece (520) is arranged in the connecting groove and the threaded hole and threadedly connected with the convex spherical lining base body (300) and the first connecting piece (510), one of the first connecting piece (510) and the second connecting piece (520) is a left-handed thread structure, and the other is a right-handed thread structure.
4. The long-acting lubricated tensile spherical bearing for cable bridges according to claim 2, characterized in that The rotating cavity (210) penetrates the surface of the concave spherical lining base body (200) close to the first support plate (110).
5. The long-acting lubricated tensile spherical bearing for cable-stayed bridges according to claim 1, characterized in that, The convex spherical surface of the convex spherical lining base body (300) and the concave spherical surface of the concave spherical lining base body (200) are further provided with a spherical sliding plate (610).
6. The long-acting lubricated tensile spherical bearing for cable bridges according to claim 1, characterized in that, The convex spherical lining base body (300) is internally provided with a plurality of flow channels (310), each of the flow channels (310) is in communication with a plurality of flow channel holes (320), and all the flow channel holes (320) are uniformly distributed on the sliding surface of the convex spherical lining base body (300).
7. The long-term lubricated tensile-compressive spherical bearing for cable-stayed bridges according to claim 6, characterized in that, The axial direction of the flow channel (310) is parallel to the longitudinal direction of the cable bridge.
8. The long-acting lubricated tensile spherical bearing for cable bridges according to claim 1 or 6, characterized in that The sliding surface of the convex spherical lining base body (300) is connected with a sealing ring (700), the sealing ring (700) protrudes from the sliding surface of the convex spherical lining base body (300), the sliding surface of the convex spherical lining base body (300) is further provided with a plurality of sliding blocks (620), and the sealing ring (700) is enclosed and arranged outside all the sliding blocks (620) and all the flow channel holes (320).
9. The long-term lubricated tensile-compressive spherical bearing for cable-stayed bridges according to claim 1, characterized in that, The concave spherical lining base body (200) is fixed with a first sliding strip (810) extending along the transverse direction of the cable bridge, the first support plate (110) is fixed with a first side sliding strip (820) and a first pressing plate (830) extending along the transverse direction of the cable bridge, the first side sliding strip (820) and the first sliding strip (810) are arranged along the radial direction of the support, the first pressing plate (830) is located on the side of the first sliding strip (810) close to the second support plate (120), and the first sliding strip (810) is in sliding cooperation with the first side sliding strip (820) and the first pressing plate (830), a plurality of first assembly holes are arranged on the first sliding strip (810), and first graphite blocks (840) are mounted in the first assembly holes; The first support plate (110) is further provided with two first limiting blocks (850), the two first limiting blocks (850) are respectively located at the two ends of the first sliding strip (810), and the first limiting blocks (850) are in limiting cooperation with the first sliding strip (810) along the transverse direction of the cable bridge.
10. The long-acting lubricated tensile spherical bearing for cable-stayed bridges according to claim 1, characterized in that, The convex spherical lining base body (300) is fixed with a second sliding strip (910) extending along the longitudinal direction of the cable bridge, the second support plate (120) is fixed with a second side sliding strip (920) and a second pressing plate (930) extending along the longitudinal direction of the cable bridge, the second side sliding strip (920) and the second sliding strip (910) are arranged along the radial direction of the support, the second pressing plate (930) is located on the side of the second sliding strip (910) close to the first support plate (110), and the second sliding strip (910) is in sliding cooperation with the second side sliding strip (920) and the second pressing plate (930), a plurality of second assembly holes are arranged on the second sliding strip (910), and second graphite blocks (940) are mounted in the second assembly holes. The second support plate (120) is further provided with two second limiting blocks (950), the two second limiting blocks (950) are respectively located at the two ends of the second sliding strip (910), and the second limiting blocks (950) are in limiting cooperation with the second sliding strip (910) along the longitudinal direction of the cable bridge.