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 installation groove is formed between the top of the lower sliding plate and the inner side wall of the lower sliding plate, a transverse check block assembly capable of being transversely released to abut against an upper rotating plate is arranged in the self-locking installation groove, a vertical check block assembly is further arranged in the self-locking installation groove, and the transverse check block assembly and the vertical check block assembly are arranged in the self-locking installation groove. 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 movable support is in a constraint state before an earthquake, the displacement of the support caused by bridge shrinkage and creep, temperature change and the like is met, the movable 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 utility model belongs to bridge and building field's reduction and isolation support technical field, concretely relates to a bridge support with mechanical self -locking function. BACKGROUND

[0002] Bridge support is the important structural component of connecting bridge upper structure and lower structure, it can reliably transmit the counterforce and deformation (displacement and rotation angle) of bridge upper structure to bridge lower structure. In support structure, friction pair (sliding, rotating) structure is the core structure of bridge support, it bears support vertical load, and uniformly transmits load to support lower structure, simultaneously realizes support sliding and energy dissipation function through horizontal relative sliding. Longitudinal, multidirectional support longitudinal bridge friction pair can provide bridge longitudinal bridge displacement. When earthquake occurs, longitudinal bridge displacement is often very large and even exceeds support design displacement, easily causes support upper plate to slide and fall, finally leads to bridge collapse.

[0003] At present, bridge ball type support does not set displacement baffle beyond in longitudinal bridge direction or sets baffle at displacement limit, and support is still in a mechanism form that can shake in longitudinal bridge direction when earthquake occurs, at this time, impact force of baffle is very large, and baffle is extremely easy to break and fail.

[0004] At present, for the state that support becomes self -locking in use process, the industry still generally uses speed lock or one-way gear mechanical structure mode. Lock needs very big size, and then hydraulic oil in speed lock needs to be replaced regularly, and gear mode is insufficient in fixed strength due to linear contact of gear. SUMMARY

[0005] The utility model discloses a bridge support with mechanical self -locking function to solve the problems in the prior art.

[0006] The technical scheme of the utility model discloses a bridge support with mechanical self -locking function, including lower sliding board, the lower sliding board top and inboard wall between form self -locking installation groove, the self -locking installation groove is provided with the transverse stopper assembly that can transversely release and prop up the upper rotating plate, the self -locking installation groove still is provided with vertical stopper assembly, the vertical stopper assembly can prop up between the transverse stopper assembly of release and lower sliding board inboard wall, the transverse stopper assembly is provided with constraint structure.

[0007] Further, the vertical stopper assembly includes a lower stopper, and the lower end of the lower stopper is connected to the self-locking installation groove through a lower spring.

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

[0009] Further, the lateral stop block assembly comprises a right stop block connected with the lower sliding plate through a side spring.

[0010] Further, the top surface of the lower stop block is flush with the top surface of the lower sliding plate in the constraint state.

[0011] Further, the right stop block slides along the top surface of the lower stop block and the top surface of the lower sliding plate in the release state.

[0012] Further, two parallel fixing arms are formed at the inner wall of the lower sliding plate, and the width of the fixing arms is slightly greater than that of the right stop block.

[0013] Further, the constraint structure comprises a pin block, a fixing pin is arranged between the fixing arms, and the fixing pin passes through the right stop block and the pin block to constrain the right stop block.

[0014] Further, a transverse groove is formed in the right stop block, and the pin block is located between the transverse grooves.

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

[0016] The beneficial effects of the utility model are as follows:

[0017] The utility model is in the constraint state before the earthquake, and the displacement of the support caused by the shrinkage and creep of the bridge, temperature change and the like is met, the displaceable support is locked into a fixed support in the earthquake, and the earthquake resistance is enhanced; after the earthquake, the support can be replaced with parts for use, and the service life is improved. DRAWINGS

[0018] Figure 1 is the front view of the utility model;

[0019] Figure 2 is the detail view of the utility model;

[0020] Figure 3 is the top view of the utility model;

[0021] Figure 4 is the front view of the utility model after the earthquake;

[0022] Figure 5 is the detail view of the utility model after the earthquake;

[0023] Figure 6 is the top view of the utility model after the earthquake;

[0024] Wherein: 1, the upper support plate; 2, the upper rotating plate; 3, the spherical crown lining plate; 4, the spherical surface rotating wear-resistant plate; 5, the lower plane sliding wear-resistant plate; 6, mechanical self-locking structure; 61, side spring; 62, right stop block; 63, lower spring; 64, pin stop block; 65, pin; 66, lower stop block; 7, sealing ring; 8, lower sliding plate. DETAILED DESCRIPTION

[0025] The utility model will be explained in detail below with reference to the drawings and examples:

[0026] As Figures 1 to 6 shown, a bridge support with mechanical self-locking function, comprising a lower sliding plate 8, the lower sliding plate 8 top and inner wall form self-locking installation groove, the self-locking installation groove is provided with the transverse stop block assembly that can transversely release and prop up the upper rotating plate 2, the self-locking installation groove is also provided with vertical stop block assembly, the vertical stop block assembly can prop up between the transverse stop block assembly of release and the inner wall of lower sliding plate 8, the transverse stop block assembly is provided with constraint structure.

[0027] The vertical stop block assembly includes a lower stop block 66, and the lower end of the lower stop block 66 is connected to the self-locking installation groove through a lower spring 63.

[0028] The width of the lower stop block 66 is consistent with the self-locking installation groove and can vertically slide after the transverse stop block assembly is released.

[0029] The transverse stop block assembly includes a right stop block 62, and the right stop block 62 is connected to the lower sliding plate 8 through a side spring 61.

[0030] In the constrained state, the top surface of the lower stop block 66 is flush with the top surface of the lower sliding plate 8.

[0031] In the released state, the right stop block 62 slides along the top surface of the lower stop block 66 and the top surface of the lower sliding plate 8.

[0032] Two parallel fixed arms are formed at the inner wall of the lower sliding plate 8, and the width of the fixed arms is slightly greater than that of the right stop block 62.

[0033] The constraint structure includes a pin stop block 64, a fixed pin is arranged between the fixed arms, and the pin passes through the right stop block 62 and the pin stop block 64 to constrain the right stop block 62.

[0034] A transverse groove is formed in the right stop block 62, and the pin stop block 64 is located between the transverse grooves.

[0035] A protrusion is formed at the outer wall of the upper rotating plate 2, and the protrusion is opposite to the position of the transverse groove.

[0036] Specifically, the side spring 61 is one or more rows of springs.

[0037] More specifically, the connecting position of the side spring 61 and the right block 62 is the upper part of the side wall, so as to avoid interfering with the released lower block 66.

[0038] Specifically, the lower spring 63 is one or more rows of springs.

[0039] More specifically, one row of the lower spring 63 is located below the pin block 64, so that the right block 62 and the lower block 66 can be constrained by a pin 65.

[0040] Specifically, the lower sliding plane wear plate 5 is arranged between the lower sliding plate 8 and the spherical cap lining plate 3, and is embedded and fixed on the spherical cap lining plate 3, and forms a plane sliding friction pair with the plane stainless steel plate welded on the lower sliding plate 8.

[0041] Specifically, the spherical surface rotating wear plate 4 is arranged between the spherical cap lining plate 3 and the rotating plate 2, and is embedded and fixed on the rotating plate 2, and forms a rotating friction pair with the spherical surface stainless steel plate welded on the spherical cap lining plate 3.

[0042] Specifically, sealing rings 7 are arranged in the upper plane sliding friction pair and the rotating friction pair for dust and water prevention.

[0043] Specifically, from the attached Figure 1 It can be seen that the support is a one-way sliding support. When the spherical support needs to slide, the support can complete the plane sliding through the plane sliding friction pair, and the sliding length can meet the displacement of the support caused by the shrinkage and creep of the bridge, temperature changes and the like. The mechanical self-locking device does not interfere with the displacement of the support caused by the shrinkage and creep of the bridge, temperature changes and the like.

[0044] Specifically, from the attached Figure 2 and the attached Figure 3 It can be seen that the mechanical self-locking device is composed of the side spring 61, the right block 62, the lower spring 63, the pin block 64, the pin 65 and the lower block 66. The right block 62 is fixed by the pin on the side wall of the lower sliding plate 8, and the left side of the right block 62 presses the spring 61, which is welded on the right side of the side wall of the lower sliding plate 8. The right block 62 presses the lower block 66, and the lower block 66 presses the lower spring 63, which is welded on the upper side of the side wall bottom plate of the lower sliding plate 8.

[0045] Specifically, from the attached Figure 1 , 2, 4, 5, 6 can be seen, when an earthquake occurs, the displacement of the support exceeds its design displacement, the upper rotating plate 2 side protruding part moves to the pin baffle 64 and breaks the pin 65, after the pin 65 is broken, the constraint between the right block 62 and the lower sliding plate 8 disappears, the side spring 61 pushes the right block 62 to tightly fit with the spherical cap lining plate 3 and the upper rotating plate 2, at this time, the lower block 66 is lifted by the lower spring 63 by a distance, and the lower block 66 is lifted and prevents the right block 62 from moving to the left.

[0046] The other side mechanical locking device 6 of the support is the same, when both ends of the mechanical locking device 6 are triggered, the spherical cap lining plate 3 and the upper rotating plate 2 of the support are completely locked and fixed between the lower sliding plate 8 by the mechanical locking device 6.

[0047] Specifically, after the earthquake is over, the right block 62 and the lower block 66 can be fixed at their original positions by using new pins 65, and then the support can return to the state before the earthquake and be used again.

[0048] The utility model is in the constraint state before the earthquake, meets the displacement of the support caused by the shrinkage and creep of the bridge, temperature change and the like, is locked into a fixed support when the earthquake, enhances the earthquake resistance; after the earthquake, the support can be used by replacing parts, and the service life is improved.

Claims

1. A bridge support with mechanical self-locking function, comprising a lower sliding plate (8), characterized in that: The bottom of the lower sliding plate (8) and the inner wall form a self-locking installation groove, which is provided with a transverse stop block assembly capable of transversely releasing the upper rotating plate (2), and is also provided with a vertical stop block assembly capable of being stopped between the released transverse stop block assembly and the inner wall of the lower sliding plate (8), and the transverse stop block assembly is provided with a constraint structure.

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), and the lower end of the lower stop block (66) is connected with the self-locking installation groove through 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 stop block (66) is consistent with the self-locking installation groove and can be vertically slid after the release of the transverse stop block assembly.

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

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

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

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

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

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

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

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