A spherical bearing

Abstract

The present invention discloses a spherical bearing, including a lower connecting plate, an upper connecting plate and a collision energy transmission device; the collision energy transmission device includes a bottom sliding collision block, a top sliding collision block and an intermediate rotating body, a bottom sliding friction pair is connected between the bottom sliding collision block and the lower connecting plate, and a top sliding friction pair is connected between the top sliding collision block and the upper connecting plate; a circle of top collision plates extends downward on the bottom surface of the top sliding collision block, and a circle of bottom collision plates extends upward on the top surface of the bottom sliding collision block. The spherical bearing disclosed in the present invention can prompt the top sliding friction pair and / or the bottom sliding friction pair to start actuating by configuring a collision energy transmission device, thereby effectively realizing the shock absorption / isolation function.

Description

Technical Field

[0001] The invention relates to the technical field of building supports, in particular to a spherical support. Background Art

[0002] Spherical bearings have been used for many years in bridges, buildings and other structures. Friction pendulum bearings or hyperboloid bearings are classified as spherical bearings in the bearing industry.

[0003] The principle of spherical bearings is to use the swing of the spherical surface to isolate and dissipate energy. The principle of seismic isolation and energy dissipation is to use the sliding friction pair to extend the vibration period of the structure to greatly reduce the amplification effect of the structure caused by the earthquake, and to consume the earthquake energy through the friction between the parts of the sliding friction pair of the bearing.

[0004] like Figure 1 As shown, the spherical bearing in the prior art includes a lower connecting plate 1', an upper connecting plate 2' and a sliding block 3', a sliding friction pair is connected between the top of the sliding block 3' and the upper connecting plate 2', and a sliding friction pair is connected between the bottom of the sliding block 3' and the lower connecting plate 1'. The sliding friction pair includes a fixed plate 4' and a sliding plate 5'. The fixed plate 4' is fixedly mounted on the upper and lower connecting plates, and the sliding plate 5' is mounted on the top and bottom surfaces of the sliding block 3'.

[0005] During installation, the lower connecting plate 1' is connected to the bridge pier or the building foundation, and the upper connecting plate 2' is connected to the bridge or the upper building.

[0006] Generally speaking, the initial static friction coefficient of the sliding friction pair is about twice the dynamic friction coefficient. Therefore, the initial force (yield force) when the sliding plate 5' in the spherical bearing just starts to slide relative to the fixed plate 4' (the bearing starts to operate) is twice the force after the sliding plate 5' slides relative to the fixed plate 4'.

[0007] When a building is subjected to a relatively small load, such as the horizontal load caused by the sudden braking of a vehicle traveling on a bridge, the yield force of the sliding friction pair can offset it and will not cause vibration of the bridge. Such relatively small loads also include wind loads, loads of small earthquakes, etc. In other words, due to the existence of the yield force, under the action of a relatively small load, the sliding friction pair in the spherical bearing does not slide, and the seismic isolation and energy dissipation is not activated. When the horizontal force caused by the load is greater than the yield force of the spherical bearing (that is, the friction force caused by the static friction coefficient), the sliding plate 5' starts to slide relative to the fixed plate 4', and the friction between the sliding plate 5' and the fixed plate 4' is used to consume the seismic energy, and the spherical bearing enters the seismic reduction / isolation state.

[0008] However, the spherical bearing in the prior art has the following defects:

[0009] Since the initial static friction coefficient of the sliding friction pair is greater than the dynamic friction coefficient, if the load generated by the vibration cannot break through the initial static friction coefficient to cause the initial yield force, the spherical bearing will not activate the seismic reduction / isolation function, thereby causing damage to the building structure.

[0010] For example, suppose the bridge is built to withstand an earthquake of magnitude X. However, when an earthquake of magnitude X occurs, the sliding friction pair in the spherical bearing may not be activated due to the initial yield force. The initial yield force of the sliding friction pair may be exceeded when the earthquake magnitude is greater than magnitude X. In this case, when an earthquake of magnitude X occurs, the bridge will be destroyed because the spherical bearing does not play the role of seismic reduction / isolation.

[0011] In view of this, it is necessary to provide a spherical bearing that can quickly and effectively achieve the shock absorption / isolation function. Summary of the invention

[0012] The technical solution of the present invention provides a spherical bearing, comprising a lower connecting plate, an upper connecting plate and a collision energy transmission device arranged between the upper connecting plate and the lower connecting plate;

[0013] The collision energy transmission device comprises a bottom sliding collision block and a top sliding collision block, a bottom sliding friction pair is connected between the bottom sliding collision block and the lower connecting plate, and a top sliding friction pair is connected between the top sliding collision block and the upper connecting plate;

[0014] A circle of top collision plates extends downwardly from the bottom surface of the top sliding collision block, and a circle of bottom collision plates extends upwardly from the top surface of the bottom sliding collision block;

[0015] In the vertical direction, the lower end of the top collision plate is located between the upper end of the bottom collision plate and the top surface of the bottom sliding collision block;

[0016] In the horizontal direction, there is a preset gap between the top collision plate and the bottom collision plate to allow the top sliding collision block and the bottom sliding collision block to move relative to each other;

[0017] Wherein, the collision energy transmission device further comprises an intermediate rotating body which can rotate between the top sliding collision block and the bottom sliding collision block and make the top collision plate collide with the bottom collision plate;

[0018] The intermediate rotating body is arranged between the top sliding collision block and the bottom sliding collision block, the top of the intermediate rotating body contacts the bottom of the top sliding collision block, and the bottom of the intermediate rotating body contacts the top of the bottom sliding collision block.

[0019] Furthermore, the top collision plate and the bottom collision plate are respectively in the shape of a ring, and the radius of the ring-shaped bottom collision plate is greater than the radius of the ring-shaped top collision plate;

[0020] The top collision plate is located inside the bottom collision plate, and the intermediate rotating body is located inside the annular top collision plate.

[0021] Further, the top surface of the intermediate rotating body has a top curved surface convex upward, and the bottom surface of the intermediate rotating body has a bottom curved surface convex downward;

[0022] The top curved surface contacts the bottom surface of the top sliding collision block, and the bottom curved surface contacts the top surface of the bottom sliding collision block.

[0023] Furthermore, the top curved surface and the bottom curved surface are spherical cap-shaped curved surfaces respectively.

[0024] Furthermore, the bottom surface of the top sliding collision block and the top surface of the bottom sliding collision block are respectively planes.

[0025] Furthermore, a circle of friction protrusions extending toward the intermediate rotating body is provided on the top collision plate;

[0026] The edge of the intermediate rotating body is in contact with the friction protrusion.

[0027] Furthermore, the end of the friction protrusion is a pointed end; and the pointed end is in contact with the intermediate rotating body.

[0028] Furthermore, the top sliding friction pair includes a spherical crown-shaped upper steel plate and an upper sliding plate;

[0029] The upper steel plate is mounted on the bottom surface of the upper connecting plate, and the upper sliding plate is mounted on the top surface of the top sliding collision block;

[0030] The upper steel plate is pressed on the upper slide plate;

[0031] The bottom sliding friction pair comprises a spherical crown-shaped lower steel plate and a lower sliding plate;

[0032] The lower steel plate is mounted on the top surface of the lower connecting plate, and the lower sliding plate is mounted on the bottom surface of the bottom sliding collision block;

[0033] The lower slide plate is pressed on the lower steel plate.

[0034] Furthermore, a spherical crown-shaped upper groove is provided on the bottom surface of the upper connecting plate, and the upper steel plate is fixedly installed in the upper groove;

[0035] A spherical crown-shaped lower groove is arranged on the top surface of the lower connecting plate, and the lower steel plate is fixedly installed in the lower groove.

[0036] Furthermore, a top groove is provided on the top surface of the top sliding collision block, the upper slide plate is fixedly installed in the top groove, the top surface of the upper slide plate extends above the top groove and contacts the upper steel plate;

[0037] A bottom groove is arranged on the bottom surface of the bottom sliding collision block, and the lower slide plate is fixedly installed in the bottom groove. The bottom surface of the lower slide plate extends out from below the bottom groove and contacts the lower steel plate.

[0038] The above technical solution has the following beneficial effects:

[0039] The spherical bearing provided by the present invention configures the collision energy transmission device to be composed of a bottom sliding collision block, a top sliding collision block and an intermediate rotating body. When a certain vibration occurs, the intermediate rotating body can be caused to rotate, thereby causing the bottom sliding collision block or the top sliding collision block to move slightly in the lateral direction, thereby causing the top collision plate to collide with the bottom collision plate. The energy or collision load generated by the collision is then transmitted to the top sliding friction pair through the top sliding collision block or transmitted to the bottom sliding friction pair through the bottom sliding collision block. The collision load and the vibration load together overcome the initial yield force of the sliding friction pair, prompting the top sliding friction pair and / or the bottom sliding friction pair to start actuating, thereby realizing the shock absorption / isolation function. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 It is a structural schematic diagram of a spherical bearing in the prior art;

[0041] Figure 2 A schematic diagram of the structure of a spherical support provided by an embodiment of the present invention;

[0042] Figure 3 for Figure 2 An exploded view of the spherical bearing is shown;

[0043] Figure 4 is a schematic diagram of the structure of the collision energy transfer device;

[0044] Figure 5 This is an exploded view of the collision energy transfer device. DETAILED DESCRIPTION

[0045] The specific embodiments of the present invention are further described below in conjunction with the accompanying drawings. The same components are represented by the same reference numerals. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to directions in the accompanying drawings, and the words "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0046] like Figure 2-5 As shown, the spherical bearing provided by the embodiment of the present invention comprises a lower connecting plate 1 , an upper connecting plate 2 , and a collision energy transfer device 3 arranged between the upper connecting plate 2 and the lower connecting plate 1 .

[0047] The collision energy transmission device 3 includes a bottom sliding collision block 31 and a top sliding collision block 32. A bottom sliding friction pair 4 is connected between the bottom sliding collision block 31 and the lower connecting plate 1, and a top sliding friction pair 5 is connected between the top sliding collision block 32 and the upper connecting plate 2.

[0048] A circle of top collision plates 321 extends downwardly from the bottom surface 320 of the top sliding collision block 32 , and a circle of bottom collision plates 311 extends upwardly from the top surface 310 of the bottom sliding collision block 31 .

[0049] In the vertical direction, the lower end of the top collision plate 321 is located between the upper end of the bottom collision plate 311 and the top surface 310 of the bottom sliding collision block 31. In the horizontal direction, there is a preset gap 30 between the top collision plate 321 and the bottom collision plate 311 to allow the top sliding collision block 32 and the bottom sliding collision block 31 to move relative to each other.

[0050] The collision energy transmission device 3 further includes an intermediate rotating body 33 which can rotate between the top sliding collision block 32 and the bottom sliding collision block 31 and make the top collision plate 321 collide with the bottom collision plate 311 .

[0051] The intermediate rotating body 33 is arranged between the top sliding collision block 32 and the bottom sliding collision block 31 , the top of the intermediate rotating body 33 contacts the bottom surface 320 of the top sliding collision block 32 , and the bottom of the intermediate rotating body 33 contacts the top surface 310 of the bottom sliding collision block 31 .

[0052] The spherical bearing provided by the present invention can be applied to buildings such as bridges, and mainly includes a lower connecting plate 1, an upper connecting plate 2, a collision energy transmission device 3, a bottom sliding friction pair 4 and a top sliding friction pair 5.

[0053] The lower connecting plate 1 is used to be fixedly installed on the base of a building, such as a bridge pier. The upper connecting plate 2 is used to be installed on the upper part of a building, such as a bridge. The collision energy transmission device 3 is assembled between the lower connecting plate 1 and the upper connecting plate 2, and its top is assembled with the upper connecting plate 2 through the top sliding friction pair 5, and its bottom is assembled with the lower connecting plate 1 through the bottom sliding friction pair 4.

[0054] The collision energy transmission device 3 is a device that can collide when vibration occurs, thereby transmitting the energy or load generated during the collision to the top sliding friction pair 5 and / or the bottom sliding friction pair 4 .

[0055] The collision energy transmission device 3 includes a bottom sliding collision block 31, a top sliding collision block 32 and an intermediate rotating body 33. The intermediate rotating body 33 is preloaded between the bottom sliding collision block 31 and the top sliding collision block 32. When the force transmitted by the surrounding vibration is greater than the preload force, the intermediate rotating body 33 can rotate between the bottom sliding collision block 31 and the top sliding collision block 32. The rotation direction can be any direction as long as it can produce corresponding rotation.

[0056] The intermediate rotating body 33 can be a sphere, a cylinder, an ellipsoid or a spherical cap, etc.

[0057] The top sliding collision block 32 is assembled with the upper connecting plate 2 through the top sliding friction pair 5 , and the bottom sliding collision block 31 is assembled with the lower connecting plate 1 through the bottom sliding friction pair 4 .

[0058] The specific assembly method of the bottom sliding collision block 31, the top sliding collision block 32 and the middle rotating body 33 is as follows:

[0059] A circle of top collision plates 321 is provided on the bottom surface 320 of the top sliding collision block 32. The top collision plates 321 are integrally formed with the top sliding collision block 32. The top collision plates 321 extend downward, thereby forming a top accommodating groove between the circle of top collision plates 321 for assembling the intermediate rotating body 33.

[0060] A circle of bottom collision plates 311 is arranged on the top surface 310 of the bottom sliding collision block 31. The bottom collision plates 311 are integrally formed with the bottom sliding collision block 31. The bottom collision plates 311 extend upward, thereby forming a bottom accommodating groove between a circle of bottom collision plates 311 for accommodating a portion of the top collision plate 321 and the intermediate rotating body 33.

[0061] In the vertical direction or the direction perpendicular to the ground, the lower end of the top collision plate 321 is between the top end of the bottom collision plate 311 and the top surface 310 (the bottom of the groove containing the bottom groove) of the bottom sliding collision block 31. In the horizontal direction, there is a preset gap 30 between the top collision plate 321 and the bottom collision plate 311 to allow the top sliding collision block 32 and the bottom sliding collision block 31 to move relative to each other. When the top sliding collision block 32 and the bottom sliding collision block 31 move a certain distance in the horizontal direction, the top collision plate 321 collides with the bottom collision plate 311, thereby generating collision energy or collision load, which can be transmitted to the top sliding friction pair 5 and / or the bottom sliding friction pair 4 through the top sliding collision block 32 and / or the bottom sliding collision block 31, helping the top sliding friction pair 5 and / or the bottom sliding friction pair 4 to start actuation.

[0062] The intermediate rotating body 33 is disposed between the top sliding collision block 32 and the bottom sliding collision block 31 , and contacts the bottom surface 320 of the top sliding collision block 32 , and contacts the top surface 310 of the bottom sliding collision block 31 .

[0063] When the force generated by the vibration of the surrounding is greater than the preload force of the intermediate rotating body 33, the intermediate rotating body 33 can rotate between the top sliding collision block 32 and the bottom sliding collision block 31. There is a certain friction force between the intermediate rotating body 33 and the bottom surface 320 and the top surface 310. When the intermediate rotating body 33 rotates, it will generate a reaction force on the top sliding collision block 32 and / or the bottom sliding collision block 31, so that the top sliding collision block 32 and / or the bottom sliding collision block 31 move in the horizontal direction.

[0064] The actuation process of the spherical bearing provided by the present invention will be described in detail below:

[0065] When an earthquake or vibration occurs on the ground, the energy generated by the vibration will be transferred to the lower connecting plate 1. In the horizontal direction, the lower connecting plate 1 will be subjected to a horizontal force F1 in the first direction. The bottom sliding friction pair 4 is subjected to a horizontal force F1 in the second direction, and the first direction is opposite to the second direction. The bottom sliding collision block 31 is subjected to a horizontal force F1 in the first direction. The intermediate rotating body 33 is subjected to a horizontal force F1 in the second direction. The top sliding friction pair 5 is subjected to a horizontal force F1 in the first direction. The top sliding collision block 32 is subjected to a horizontal force F1 in the second direction. The upper connecting plate 2 is subjected to a horizontal force F1 in the first direction.

[0066] This actuation process ignores the loss in force transmission. Since the vibration is generally large, the influence of other factors can be ignored.

[0067] Generally, the initial yield force of the bottom sliding friction pair 4 and the top sliding friction pair 5 is the same.

[0068] If the horizontal force F1 is smaller than the initial yield force of the bottom sliding friction pair 4 and the initial yield force of the top sliding friction pair 5, the bottom sliding friction pair 4 and the top sliding friction pair 5 will not be activated and cannot produce the shock absorption / isolation function.

[0069] Since the bottom sliding collision block 31 is subjected to the horizontal force F1 in the first direction, the intermediate rotating body 33 is subjected to the horizontal force F1 in the second direction under the reaction force. If the horizontal force is greater than the preload force of the intermediate rotating body 33, the intermediate rotating body 33 will rotate or roll in the second direction, breaking the balance between the bottom sliding collision block 31, the top sliding collision block 32 and the intermediate rotating body 33, and the top sliding collision block 32 and the top sliding friction pair 5 will move in the horizontal direction toward the first direction. When the movement amount is the preset gap 30, the top collision plate 321 collides with the bottom collision plate 311, thereby generating collision energy or collision load, generating a horizontal force F2 in the first direction on the bottom collision plate 311, generating a horizontal force F2 in the second direction on the bottom sliding friction pair 4, generating a horizontal force in the second direction on the top sliding collision block 32, and generating a horizontal force F2 in the first direction on the top sliding friction pair 5.

[0070] At this time, the horizontal force on the bottom sliding friction pair 4 is F1+F2 in the second direction, which will break through the initial yield force of the bottom sliding friction pair 4, causing the bottom sliding collision block 31 to slide slightly in the second direction. The horizontal force on the top sliding friction pair 5 is F1+F2 in the first direction, which will break through the initial yield force of the top sliding friction pair 5, causing the top sliding collision block 32 to slide slightly in the first direction.

[0071] From the perspective of physical structure, the rotation or angular activity of the middle rotating body 33 is small, and the activity of the bottom sliding collision block 31 and the top sliding collision block 32 is also small, which will not affect the structural support performance.

[0072] When the bottom sliding collision block 31 slides with the top sliding collision block 32 , the friction force can consume the vibration energy.

[0073] The sliding directions of the bottom sliding collision block 31 and the top sliding collision block 32 are opposite, which increases the distance of the structure in the horizontal direction and can also extend the vibration period of the structure.

[0074] When an earthquake occurs on the ground or the force generating the vibration is small, the rigid structure of the building or the rigid structure of the spherical support can resist it, and the middle rotating body 33 does not move, and remains pre-tightened between the bottom sliding collision block 31 and the top sliding collision block 32.

[0075] The principle when the force of vibration is transmitted from the upper connecting plate 2 is the same as the principle when the force is transmitted from the lower connecting plate 1.

[0076] Therefore, the spherical bearing provided by the present invention can transfer the collision energy between the bottom sliding collision block and the top sliding collision block to the top sliding friction pair and / or the bottom sliding friction pair by configuring a collision energy transmission device. The collision load and the vibration load together overcome the initial yield force of the sliding friction pair, prompting the top sliding friction pair and / or the bottom sliding friction pair to start moving, thereby effectively realizing the shock absorption / isolation function.

[0077] Preferably, if Figure 2-5 As shown, the top collision plate 321 and the bottom collision plate 311 are respectively in annular shapes, and the radius of the annular bottom collision plate 311 is greater than the radius of the annular top collision plate 321. The top collision plate 321 is located inside the bottom collision plate 311, and the intermediate rotating body 33 is located inside the annular top collision plate 321.

[0078] The bottom collision plate 311 can limit the movement of the top sliding collision block 32. The top collision plate 321 is arranged in the bottom collision plate 311, and the intermediate rotating body 33 is arranged in the circular top collision plate 321, which is convenient for assembly and can improve the stability of the structure.

[0079] Preferably, if Figure 4-5 As shown, the top surface of the intermediate rotating body 33 has a top curved surface 331 convex upward, and the bottom surface of the intermediate rotating body 33 has a bottom curved surface 332 convex downward.

[0080] The top curved surface 331 contacts the bottom surface 320 of the top sliding collision block 32 , and the bottom curved surface 332 contacts the top surface 310 of the bottom sliding collision block 31 .

[0081] The contact area between the top curved surface 331 and the bottom surface 320 is small, and the friction between the two is small. The contact area between the bottom curved surface 332 and the top surface 310 is small, and the friction between the two is small. When the middle rotating body 33 is subjected to external force, it can rotate or roll smoothly, which helps to realize the collision energy transfer between the bottom sliding collision block and the top sliding collision block.

[0082] Preferably, the top curved surface 331 and the bottom curved surface 332 are spherical cap curved surfaces, that is, the top curved surface 331 and the bottom curved surface 332 are spherical cap curved surfaces, which can make the intermediate rotating body 33 rotate or roll in any direction, thereby improving the collision energy transfer effect of the collision energy transfer device.

[0083] The intermediate rotating body 33 can be composed of two upper and lower spherical cap bodies.

[0084] Preferably, the side surface 334 between the top curved surface 331 and the bottom curved surface 332 of the intermediate rotating body 33 is a curved surface, which can reduce the friction with the inner surface of the top collision plate 321 and facilitate the intermediate rotating body 33 to rotate or roll.

[0085] Preferably, if Figure 5 As shown, the bottom surface 320 of the top sliding collision block 32 and the top surface 310 of the bottom sliding collision block 31 are respectively planes, so that there is point contact between the top curved surface 331 and the bottom surface 320, and there is point contact between the bottom curved surface 332 and the top surface 310, which reduces friction and facilitates the rotation or rolling of the intermediate rotating body 33.

[0086] During the process of rotating or rolling, the intermediate rotating body 33 can rotate or roll with the line between the upper contact point between the top curved surface 331 and the bottom surface 320 and the lower contact point between the bottom curved surface 332 and the top surface 310 as the axis.

[0087] Preferably, if Figure 4-5 As shown, a circle of friction protrusions 323 extending toward the intermediate rotating body 33 is provided on the top collision plate 321, and the edge of the intermediate rotating body 33 contacts the friction protrusions 323. The friction protrusions 323 are integrally formed with the top collision plate 321, and are located on the inner side of the top collision plate 321 and extend toward the intermediate rotating body 33. The end of the top collision plate 321 contacts the side surface 334 of the intermediate rotating body 33, and while limiting the installation position of the intermediate rotating body 33, the rotation or rolling center of the intermediate rotating body 33 is limited. Through the friction between the friction protrusions 323 and the side surface 334, the rotation of the intermediate rotating body 33 has a certain torque, and the slight vibration will not cause the collision of the upper and lower swing plates.

[0088] Preferably, if Figure 4-5 As shown, the end of the friction protrusion 323 is a tip. The tip contacts the intermediate rotating body 33, and while limiting the installation position of the intermediate rotating body 33, it can also reduce the contact area with the intermediate rotating body 33 and reduce the friction force.

[0089] Preferably, if Figure 2-3 As shown, the top sliding friction pair 5 includes a spherical cap-shaped upper steel plate 51 and an upper slide plate 52. The upper steel plate 51 is mounted on the bottom surface of the upper connecting plate 2, and the upper slide plate 52 is mounted on the top surface of the top sliding collision block 32. The upper steel plate 51 is pressed on the upper slide plate 52.

[0090] The bottom sliding friction pair 4 includes a spherical cap-shaped lower steel plate 41 and a lower slide plate 42. The lower steel plate 41 is mounted on the top surface of the lower connecting plate 1, and the lower slide plate 42 is mounted on the bottom surface of the bottom sliding collision block 31. The lower slide plate 42 is pressed on the lower steel plate 41.

[0091] The bottom sliding friction pair 4 and the top sliding friction pair 5 have the same structure, one is installed at the top and the other is installed at the bottom.

[0092] The upper steel plate 51 , the upper slide plate 52 , the lower steel plate 41 and the lower slide plate 42 are all spherical crown-shaped. The upper slide plate 52 can slide in any direction relative to the upper steel plate 51 , and the lower slide plate 42 can slide in any direction relative to the lower steel plate 41 .

[0093] The radius of the upper steel plate 51 is greater than the radius of the upper slide plate 52, and the radius of the lower steel plate 41 is greater than the radius of the lower slide plate 42, so that the upper slide plate 52 is within the range of the upper steel plate 51, and the lower slide plate 42 is within the range of the lower steel plate 41. During relative sliding, the slide plates will not separate from the steel plates.

[0094] The lower steel plate 41 and the upper steel plate 51 may be stainless steel plates, and the lower slide plate 42 and the upper slide plate 52 may be metal plates with a lower hardness than the steel plate. The lower steel plate 41 and the upper steel plate 51 are hard surfaces, and the lower slide plate 42 and the upper slide plate 52 are soft surfaces. When the lower slide plate 42 slides relative to the lower steel plate 41 and the upper slide plate 52 slides relative to the upper steel plate 51, friction is generated to absorb vibration energy.

[0095] The lower steel plate 41 and the upper steel plate 51 are coated with an anti-corrosion layer (eg, a hard chrome plating layer) to improve the anti-corrosion capability.

[0096] Preferably, if Figure 2-5 As shown, a spherical crown-shaped upper groove 21 is provided on the bottom surface of the upper connecting plate 2, and the upper steel plate 51 is fixedly installed in the upper groove 21. A spherical crown-shaped lower groove 11 is provided on the top surface of the lower connecting plate 1, and the lower steel plate 41 is fixedly installed in the lower groove 11.

[0097] Both the upper groove 21 and the lower groove 11 are spherical cap-shaped, or are spherical cap grooves, which facilitate the installation of the spherical cap-shaped upper steel plate 51 and the lower steel plate 41, improve the structural stability, and can reduce the vertical distance between the upper connecting plate 2 and the lower connecting plate 1, thereby reducing the height dimension of the structure.

[0098] Preferably, if Figure 2-5 As shown, a top groove 322 is provided on the top surface of the top sliding collision block 32, and the upper slide plate 52 is fixedly installed in the top groove 322. The top surface of the upper slide plate 52 extends above the top groove 322 and contacts the upper steel plate 51.

[0099] A bottom groove 312 is provided on the bottom surface of the bottom sliding collision block 31 , and the lower slide plate 42 is fixedly installed in the bottom groove 312 . The bottom surface of the lower slide plate 42 extends out from below the bottom groove 312 and contacts the lower steel plate 41 .

[0100] The top groove 322 and the bottom groove 312 are also spherical cap-shaped and are used to fix and install the upper slide plate 52 and the lower slide plate 42, which is convenient to manufacture and has a stable structure.

[0101] In summary, the spherical bearing provided by the present invention configures the collision energy transmission device to be composed of a bottom sliding collision block, a top sliding collision block and an intermediate rotating body. When a certain vibration occurs, the intermediate rotating body can be caused to rotate, thereby causing the bottom sliding collision block or the top sliding collision block to move slightly in the lateral direction, thereby causing the top collision plate to collide with the bottom collision plate. The energy or collision load generated by the collision is then transmitted to the top sliding friction pair through the top sliding collision block or transmitted to the bottom sliding friction pair through the bottom sliding collision block. The collision load and the vibration load together overcome the initial yield force of the sliding friction pair, prompting the top sliding friction pair and / or the bottom sliding friction pair to start moving, thereby realizing the shock absorption / isolation function.

[0102] As needed, the above technical solutions can be combined to achieve the best technical effect.

[0103] The above description is only the principle and preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this field, several other modifications can be made based on the principle of the present invention, which should also be considered as the protection scope of the present invention.

Claims

1. A spherical bearing, characterized in that: The device comprises a lower connecting plate, an upper connecting plate and a collision energy transfer device arranged between the upper connecting plate and the lower connecting plate; The collision energy transmission device comprises a bottom sliding collision block and a top sliding collision block, a bottom sliding friction pair is connected between the bottom sliding collision block and the lower connecting plate, and a top sliding friction pair is connected between the top sliding collision block and the upper connecting plate; A circle of top collision plates extends downwardly from the bottom surface of the top sliding collision block, and a circle of bottom collision plates extends upwardly from the top surface of the bottom sliding collision block; In the vertical direction, the lower end of the top collision plate is located between the upper end of the bottom collision plate and the top surface of the bottom sliding collision block; In the horizontal direction, there is a preset gap between the top collision plate and the bottom collision plate to allow the top sliding collision block and the bottom sliding collision block to move relative to each other; Wherein, the collision energy transmission device further comprises an intermediate rotating body which can rotate between the top sliding collision block and the bottom sliding collision block and make the top collision plate collide with the bottom collision plate; The intermediate rotating body is arranged between the top sliding collision block and the bottom sliding collision block, the top of the intermediate rotating body contacts the bottom surface of the top sliding collision block, and the bottom of the intermediate rotating body contacts the top surface of the bottom sliding collision block; The top collision plate and the bottom collision plate are respectively in the shape of annular rings, and the radius of the annular bottom collision plate is greater than the radius of the annular top collision plate; the top collision plate is located inside the bottom collision plate, and the intermediate rotating body is located inside the annular top collision plate; The top surface of the intermediate rotating body has a top curved surface convex upward, and the bottom surface of the intermediate rotating body has a bottom curved surface convex downward; the top curved surface contacts the bottom surface of the top sliding collision block, and the bottom curved surface contacts the top surface of the bottom sliding collision block; The bottom surface of the top sliding collision block and the top surface of the bottom sliding collision block are respectively planes; a circle of friction protrusions extending toward the intermediate rotating body is arranged on the top collision plate; the edge of the intermediate rotating body contacts the friction protrusions; the end of the friction protrusion is a pointed end; and the pointed end contacts the intermediate rotating body.

2. The spherical bearing according to claim 1, characterized in that: The top curved surface and the bottom curved surface are respectively spherical cap-shaped curved surfaces.

3. The spherical bearing according to claim 1, characterized in that: The top sliding friction pair includes a spherical crown-shaped upper steel plate and an upper sliding plate; The upper steel plate is mounted on the bottom surface of the upper connecting plate, and the upper sliding plate is mounted on the top surface of the top sliding collision block; The upper steel plate is pressed on the upper slide plate; The bottom sliding friction pair comprises a spherical crown-shaped lower steel plate and a lower sliding plate; The lower steel plate is mounted on the top surface of the lower connecting plate, and the lower sliding plate is mounted on the bottom surface of the bottom sliding collision block; The lower slide plate is pressed on the lower steel plate.

4. The spherical bearing according to claim 3, characterized in that: A spherical crown-shaped upper groove is provided on the bottom surface of the upper connecting plate, and the upper steel plate is fixedly installed in the upper groove; A spherical crown-shaped lower groove is arranged on the top surface of the lower connecting plate, and the lower steel plate is fixedly installed in the lower groove.

5. The spherical bearing according to claim 3, characterized in that: A top groove is arranged on the top surface of the top sliding collision block, the upper slide plate is fixedly installed in the top groove, the top surface of the upper slide plate extends above the top groove and contacts with the upper steel plate; A bottom groove is arranged on the bottom surface of the bottom sliding collision block, and the lower slide plate is fixedly installed in the bottom groove. The bottom surface of the lower slide plate extends out from below the bottom groove and contacts the lower steel plate.

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