Bridge support with mechanical self-locking function

Abstract

The bridge support with the mechanical self-locking function comprises a lower sliding plate, a self-locking mounting groove is formed between the top and the inner side wall of the lower sliding plate, a transverse check block assembly capable of transversely releasing and abutting against an upper rotating plate is arranged in the self-locking mounting groove, a vertical check block assembly is further arranged in the self-locking mounting groove, and the vertical check block assembly is connected with the transverse check block assembly. The vertical check block assembly can abut against the position between the released transverse check block assembly and the inner wall of the lower sliding plate, and a restraining structure is arranged in the transverse check block assembly. The device is in a constraint state before an earthquake, displacement of the support caused by bridge shrinkage and creep, temperature change and the like is met, the displaceable support is locked into a fixed support during the earthquake, and the earthquake resistance is enhanced; after an earthquake occurs, parts of the support can be replaced for use, and the service life is prolonged.

Description

Technical Field

[0001] The invention belongs to the technical field of vibration reduction and isolation bearings in the field of bridges and buildings, and specifically relates to a bridge bearing with a mechanical self-locking function. Background Art

[0002] The bridge bearing is an important structural component connecting the bridge superstructure and substructure. It can reliably transfer the reaction force and deformation (displacement and rotation) of the bridge superstructure to the bridge substructure. In the bearing structure, the friction pair (sliding, rotating) structure is the core structure of the bridge bearing. It bears the vertical load of the bearing and evenly transfers the load to the bearing substructure. At the same time, it realizes the bearing sliding and energy dissipation function through horizontal relative sliding. The friction pair of the longitudinal and multi-directional bearing in the longitudinal direction of the bridge can provide the longitudinal displacement of the bridge. When an earthquake occurs, the longitudinal displacement in the longitudinal direction of the bridge is often very large or even exceeds the displacement of the bearing design, which can easily cause the bearing upper plate to slide out and fall, and eventually lead to the collapse of the bridge.

[0003] At present, spherical bearings of bridges generally do not have displacement baffles in the longitudinal direction of the bridge or set baffles at the displacement limit. When an earthquake occurs, the bearings are still in a mechanism that can shake in the longitudinal direction of the bridge. At this time, the impact force on the baffles is very large, and the baffles are very easy to break and fail.

[0004] At present, the industry generally uses speed lockers or one-way gear mechanical structures to make the support self-locking during use. The locker needs to be very large, and the hydraulic oil in the speed locker needs to be replaced regularly; the gear method has insufficient fixing strength because most gears are in line contact. Summary of the invention

[0005] The present invention is proposed to solve the problems existing in the prior art, and its purpose is to provide a bridge bearing with a mechanical self-locking function.

[0006] The technical solution of the present invention is: a bridge bearing with a mechanical self-locking function, comprising a lower sliding plate, a self-locking mounting groove formed between the top and the inner wall of the lower sliding plate, a transverse block assembly capable of being released laterally to support the upper rotating plate is provided in the self-locking mounting groove, a vertical block assembly is also provided in the self-locking mounting groove, the vertical block assembly can be supported between the released transverse block assembly and the inner wall of the lower sliding plate, and a constraint structure is provided in the transverse block assembly.

[0007] Furthermore, the vertical stop block assembly includes a lower stop block, and the lower end of the lower stop block is connected to the self-locking mounting groove through a lower spring.

[0008] Furthermore, the width of the lower stopper is consistent with the self-locking installation groove and can slide vertically after the transverse stopper assembly is released.

[0009] Furthermore, the transverse stopper assembly includes a right stopper, and the right stopper is connected to the lower sliding plate via a side spring.

[0010] Furthermore, in the restrained state, the top surface of the lower stopper is flush with the top surface of the lower sliding plate.

[0011] Furthermore, the right stopper slides along the top surface of the lower stopper and the top surface of the lower sliding plate in a released state.

[0012] Furthermore, two parallel fixing arms are formed on the inner wall of the lower sliding plate, and the width of the fixing arms is slightly larger than the right stopper.

[0013] Furthermore, the constraint structure includes a pin stopper, and a fixing pin is provided between the fixing arms. The pin passes through the right stopper and the pin stopper to realize the constraint on the right stopper.

[0014] Furthermore, transverse grooves are formed in the right stopper, and the pin stopper is located between the transverse grooves.

[0015] Furthermore, a protrusion is formed on the outer wall of the upper rotating plate, and the protrusion is opposite to the transverse groove.

[0016] The beneficial effects of the present invention are as follows: The present invention is in a constrained state before an earthquake to meet the displacement of the bearings caused by bridge shrinkage creep, temperature changes, etc. During an earthquake, the displaceable bearings are locked into fixed bearings to enhance earthquake resistance. After an earthquake, the bearings can be replaced with new parts to increase their service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a front view of the present invention; Figure 2 is a detailed diagram of the present invention; Figure 3 is a top view detail diagram of the present invention; Figure 4 It is the main view after the earthquake of the present invention; Figure 5 It is a detailed diagram after the earthquake of the present invention; Figure 6 It is a detailed top view of the present invention after the earthquake; Among them: 1. Upper support plate; 2. Upper rotating plate; 3. Ball crown lining plate; 4. Spherical rotating wear-resistant plate; 5. Lower plane sliding wear-resistant plate; 6. Mechanical self-locking structure; 61. Side spring; 62. Right stopper; 63. Lower spring; 64. Pin stopper; 65. Pin; 66. Lower stopper; 7. Sealing ring; 8. Lower sliding plate. DETAILED DESCRIPTION

[0018] Hereinafter, the present invention will be described in detail with reference to the accompanying drawings and embodiments: like Figures 1 to 6 As shown, a bridge bearing with a mechanical self-locking function includes a lower sliding plate 8, a self-locking mounting groove is formed between the top of the lower sliding plate 8 and the inner wall, a transverse block assembly is provided in the self-locking mounting groove which can be released laterally to support the upper rotating plate 2, and a vertical block assembly is also provided in the self-locking mounting groove, the vertical block assembly can be supported between the released transverse block assembly and the inner wall of the lower sliding plate 8, and a constraint structure is provided in the transverse block assembly.

[0019] The vertical stopper assembly includes a lower stopper 66 , and the lower end of the lower stopper 66 is connected to the self-locking installation groove through a lower spring 63 .

[0020] The width of the lower stopper 66 is consistent with the self-locking installation slot and can slide vertically after the lateral stopper assembly is released.

[0021] The transverse stopper assembly includes a right stopper 62 , and the right stopper 62 is connected to the lower sliding plate 8 via a side spring 61 .

[0022] When the lower stopper 66 is in the restrained state, its top surface is flush with the top surface of the lower sliding plate 8 .

[0023] The right stopper 62 slides along the top surface of the lower stopper 66 and the top surface of the lower sliding plate 8 in the released state.

[0024] Two parallel fixing arms are formed on the inner wall of the lower sliding plate 8 , and the width of the fixing arms is slightly larger than the right stopper 62 .

[0025] The restraining structure includes a pin stopper 64 . A fixing pin is provided between the fixing arms. The pin passes through the right stopper 62 and the pin stopper 64 to restrain the right stopper 62 .

[0026] The right stopper 62 has transverse grooves formed therein, and the pin stopper 64 is located between the transverse grooves.

[0027] A protrusion is formed on the outer wall of the upper rotating plate 2, and the protrusion is opposite to the transverse groove.

[0028] Specifically, the side springs 61 are one row or multiple rows of springs.

[0029] More specifically, the connection position between the side spring 61 and the right stopper 62 is the upper portion of the side wall, thereby avoiding interference with the released lower stopper 66 .

[0030] Specifically, the lower springs 63 are one or more rows of springs.

[0031] More specifically, one row of the lower springs 63 is located below the pin stopper 64 , so that the right stopper 62 and the lower stopper 66 can be constrained by a pin 65 .

[0032] Specifically, the lower sliding plane wear-resistant plate 5 is arranged between the lower sliding plate 8 and the spherical crown lining plate 3, and is embedded and fixed on the spherical crown lining plate 3, and forms a plane sliding friction pair with the plane stainless steel plate welded on the lower sliding plate 8.

[0033] Specifically, the spherical rotating wear-resistant plate 4 is arranged between the spherical crown lining plate 3 and the rotating plate 2 , and is embedded and fixed on the rotating plate 2 , forming a rotating friction pair with the spherical stainless steel plate welded on the spherical crown lining plate 3 .

[0034] Specifically, sealing rings 7 are provided on both the upper plane sliding friction pair and the rotating friction pair for dust and water prevention.

[0035] Specifically, from the attached Figure 1 It can be seen that the bearing is a one-way sliding bearing. When the spherical bearing needs to slide in the sliding direction, the bearing can complete the plane sliding through the plane sliding friction pair. The sliding length can meet the displacement of the bearing caused by bridge shrinkage creep, temperature change, etc. The mechanical self-locking device does not interfere with the displacement of the bearing caused by bridge shrinkage creep, temperature change, etc.

[0036] Specifically, from the attached Figure 2 and attached Figure 3 It can be seen that the mechanical self-locking device is composed of a side spring 61, a right stopper 62, a lower spring 63, a pin stopper 64, a pin 65, and a lower stopper 66. The right stopper 62 is fixed to the side wall of the lower sliding plate 8 by a pin, and the left side of the right stopper 62 presses against the spring 61, which is welded to the right side of the side wall of the lower sliding plate 8, the right stopper 62 presses against the lower stopper 66, and the lower stopper 66 presses against the lower spring 63, which is welded to the upper side of the bottom plate of the side wall of the lower sliding plate 8.

[0037] Specifically, from the attached Figure 1 , 2 , 4, 5, and 6 show that when an earthquake occurs, the bearing displacement exceeds its designed displacement, and the side protruding part of the upper rotating plate 2 moves to the pin baffle 64 and breaks the pin 65. After the pin 65 is broken, the constraint between the right baffle 62 and the lower sliding plate 8 disappears, and the side spring 61 pushes the right baffle 62 to fit tightly with the ball crown lining 3 and the upper rotating plate 2. At this time, the lower baffle 66 is lifted up for a distance by the lower spring 63. After being lifted up, the lower baffle 66 blocks the right baffle 62 to prevent it from moving to the left.

[0038] The same is true for the mechanical locking device 6 on the other side of the support. When the mechanical locking devices 6 at both ends are triggered, the support spherical crown lining plate 3 and the upper rotating plate 2 and the lower sliding plate 8 are completely locked and fixed by the mechanical locking device 6.

[0039] Specifically, after the earthquake occurs, the right stopper 62 and the lower stopper 66 can be fixed to their original positions with new pins 65, so that the support can be restored to the state before the earthquake and reused.

[0040] The present invention is in a constrained state before an earthquake to meet the displacement of the bearings caused by bridge shrinkage creep, temperature changes, etc. During an earthquake, the displaceable bearings are locked into fixed bearings to enhance earthquake resistance. After an earthquake, the bearings can be replaced with new parts to increase their service life.

Claims

1. A bridge support with a mechanical self-locking function, comprising a lower sliding plate (8), characterized in that: A self-locking installation groove is formed between the top and the inner wall of the lower sliding plate (8), and a transverse block assembly capable of being released laterally to support the upper rotating plate (2) is provided in the self-locking installation groove. A vertical block assembly is also provided in the self-locking installation groove, and the vertical block assembly can be supported between the released transverse block assembly and the inner wall of the lower sliding plate (8), and a restraining structure is provided in the transverse block assembly.

2. The bridge support with mechanical self-locking function according to claim 1, characterized in that: The vertical stop block assembly comprises a lower stop block (66), the lower end of the lower stop block (66) being connected to the self-locking installation groove via a lower spring (63).

3. The bridge support with mechanical self-locking function according to claim 2, characterized in that: The width of the lower stopper (66) is consistent with the self-locking installation groove and can slide vertically after the transverse stopper assembly is released.

4. The bridge support with mechanical self-locking function according to claim 3 is characterized in that: The transverse stopper assembly comprises a right stopper (62), and the right stopper (62) is connected to the lower sliding plate (8) via a side spring (61).

5. The bridge support with mechanical self-locking function according to claim 4, characterized in that: When the lower stopper (66) is in a restrained state, its top surface is flush with the top surface of the lower sliding plate (8).

6. The bridge support with mechanical self-locking function according to claim 5, characterized in that: The right stopper (62) slides along the top surface of the lower stopper (66) and the top surface of the lower sliding plate (8) in a released state.

7. The bridge support with mechanical self-locking function according to claim 4, characterized in that: Two parallel fixed arms are formed on the inner wall of the lower sliding plate (8), and the width of the fixed arms is slightly greater than the right stopper (62).

8. The bridge support with mechanical self-locking function according to claim 7, characterized in that: The restraining structure comprises a pin stopper (64), a fixing pin is arranged between the fixing arms, and the pin passes through the right stopper (62) and the pin stopper (64) to restrain the right stopper (62).

9. The bridge support with mechanical self-locking function according to claim 8, characterized in that: A transverse groove is formed in the right stopper (62), and the pin stopper (64) is located between the transverse grooves.

10. The bridge support with mechanical self-locking function according to claim 8, characterized in that: A protrusion is formed on the outer wall of the upper rotating plate (2), and the protrusion is located opposite to the transverse groove.

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