Anchoring device for adjusting the height of bridge bearings

Abstract

The present invention relates to the technical field of bridge bearing height adjustment, and discloses an anchoring device for bridge bearing height adjustment, comprising: an anchor rod, an outer sleeve, an anchor bolt, a height adjustment sleeve, a limiting structure, a bridge bottom plate and a bearing top plate, wherein the anchor rod is connected to the top of the outer sleeve by a thread, the height adjustment sleeve is sleeved in the outer sleeve, and the height adjustment sleeve and the outer sleeve can move in a relative axial direction; the limiting structure is used to limit the circumferential rotation of the height adjustment sleeve; the end of the outer sleeve is fixed to the bridge bottom plate, and the anchor bolt passes through the bearing top plate and the bridge bottom plate in turn and is threadedly connected to the height adjustment sleeve, and when the bridge bearing is raised, a height adjustment pad is filled between the bridge bottom plate and the bearing top plate. The anchoring device for bridge bearing height adjustment provided by the present invention can realize bridge bearing height adjustment without removing the bolts, and at the same time, the bolting length of the anchor bolt is not reduced, and the anchoring performance is not affected.

Description

Technical Field

[0001] The invention relates to the technical field of bridge bearing height adjustment, and in particular to an anchoring device used for bridge bearing height adjustment. Background Art

[0002] During the service of the bridge, if the foundations undergo uneven settlement, the elevation of each part of the beam will change, causing the force form of the bridge to change, affecting the structural stability. The mainstream method nowadays is to raise the bridge bearings, and raising the pad is the simplest method, such as Figure 1 As shown in the figure, the basic idea is to lift the bridge to unload the bearing, then unscrew the bolts, and then continue to lift the bridge to a certain position, insert a pad between the upper bearing plate and the bridge bottom plate (embedded steel plate), and then tighten the bolts. There are some problems in this process: the anchor bolts need to be loosened before the bearing can be installed during the height adjustment process; the thread engagement length of the anchor bolt and the sleeve becomes shorter as the pad is inserted, which will affect the anchoring performance of the bearing and the beam. Summary of the invention

[0003] The technical problem to be solved by the present invention is: in view of the above-mentioned problems, an anchoring device for adjusting the height of a bridge bearing is provided, by adding a height adjustment sleeve inside the outer tube, so that the bridge bearing can be adjusted without removing the anchor bolts.

[0004] The technical solution adopted by the present invention is as follows:

[0005] An anchoring device for adjusting the height of a bridge bearing comprises: an anchor rod, an outer sleeve, an anchor bolt, a height adjustment sleeve, a limiting structure, a bridge base plate and a bearing top plate, the anchor rod is threadedly connected to the top end of the outer sleeve, the height adjustment sleeve is sleeved in the outer sleeve, and the height adjustment sleeve and the outer sleeve can perform relative axial movement; the limiting structure is used to limit the circumferential rotation of the height adjustment sleeve, and when the bearing is adjusted, the circumferential rotation of the height adjustment sleeve can be limited by the limiting structure; the end of the outer sleeve is fixed to the bridge base plate, the anchor bolt passes through the bearing top plate and the bridge base plate in turn and is threadedly connected to the height adjustment sleeve, and when the bridge bearing is raised, the outer sleeve can be directly raised without unloading the anchor bolt; when the bridge bearing is raised, a height adjustment pad is filled between the bridge base plate and the bearing top plate.

[0006] Furthermore, the limiting structure includes a limiting pin, a through hole is opened in the side wall of the outer sleeve, and a key slot is provided on the outer wall of the height adjustment sleeve. By inserting the limiting pin through the through hole in the side wall of the outer sleeve into the key slot, the circumferential rotation of the height adjustment sleeve is limited.

[0007] Furthermore, the limiting structure includes a height adjustment sleeve and an outer sleeve, and the height adjustment sleeve and the outer sleeve are both configured as spline shapes. The spline structure on the height adjustment sleeve cooperates with the spline structure on the outer sleeve to limit the circumferential rotation of the height adjustment sleeve.

[0008] Furthermore, the limiting structure includes a limiting key, and key slots are provided on the height-adjusting sleeve and the outer sleeve. The limiting is achieved by embedding the limiting key into the key slots of the height-adjusting sleeve and the outer sleeve.

[0009] Furthermore, the outer dimensions of the height-adjusting pad are smaller than those of the bridge bottom plate and the support top plate, thereby avoiding interference with the external sleeve during the height-adjusting and insertion process.

[0010] Furthermore, the height-adjusting pads are two symmetrical E-shaped plates, each of which is provided with a strip-shaped hole, and the width of the strip-shaped hole is greater than the diameter of the anchor bolt.

[0011] Compared with the prior art, the beneficial effects of adopting the above technical solution are:

[0012] The anchoring device provided by the present invention can realize the rapid raising of the bridge support without removing the anchoring bolts, and does not affect the bolting length of the anchoring bolts. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a conventional diagram of pad height adjustment.

[0014] Figure 2 It is a schematic diagram of an anchoring device for adjusting the height of a bridge support provided by an embodiment of the present invention.

[0015] Figure 3 It is a schematic diagram of a spline-type height adjustment sleeve and an outer sleeve.

[0016] Figure 4 This is a schematic diagram of another type of spline height adjustment sleeve and outer sleeve.

[0017] Figure 5 It is a schematic diagram of a height adjustment sleeve and an outer sleeve in the form of a limit key.

[0018] Figure 6 It is a schematic diagram of the positional relationship between the bearing top plate, height adjustment pad and bridge bottom plate.

[0019] Figure 7 It is a schematic diagram of the height adjustment pad structure composed of E-type plates.

[0020] Figure 8 It is a schematic diagram of height adjustment of the anchoring device of the present invention.

[0021] Figure markings: 1-anchor rod, 2-outer sleeve, 3-height adjustment sleeve, 4-anchor bolt, 5-limit pin, 6-bridge bottom plate, 7-support top plate, 8-height adjustment pad, 9-spline, 10-limit key. DETAILED DESCRIPTION

[0022] The present invention is further described below in conjunction with the accompanying drawings.

[0023] Example 1

[0024] like Figure 2 As shown, this embodiment provides an anchoring device for adjusting the height of a bridge bearing, which is mainly composed of an anchor rod, an outer sleeve, a height adjustment sleeve, an anchor bolt, a limit pin, a bridge bottom plate and a bearing top plate.

[0025] Among them, the anchor rod is connected to the upper part of the outer sleeve by threads, the height adjustment sleeve is sleeved in the outer sleeve, the anchor bolt passes through the support top plate and the bridge bottom plate in turn and is threadedly connected to the height adjustment sleeve, and the end of the outer sleeve is fixed to the bridge bottom plate.

[0026] A keyway is provided on the outer wall of the height adjusting sleeve, and a through hole is opened on the side wall of the outer sleeve. The limit pin passes through the hole on the side wall of the outer sleeve and is inserted into the keyway, thereby restricting the height adjusting sleeve from rotating circumferentially and releasing the axial relative displacement between the height adjusting sleeve and the outer sleeve.

[0027] The method of adjusting the height of the bridge bearing is as follows: use a jack to lift the beam, and the height-adjusting sleeve slides down (falls back) axially relative to the outer sleeve, and the height-adjusting pad is inserted between the bridge bottom plate and the bearing top plate, so as to achieve rapid height adjustment without affecting the bolting length of the anchor bolts.

[0028] Example 2

[0029] This embodiment is basically the same as the embodiment 1, the difference being that in this embodiment, the height adjustment sleeve is not limited by a limit pin, but the height adjustment sleeve and the outer sleeve are made as follows: Figure 3 or Figure 4 The spline structure shown has one or more splines, and the circumferential movement of the height-adjusting sleeve is limited by the cooperation between the height-adjusting sleeve and the outer sleeve in a spline shape.

[0030] Example 3

[0031] This embodiment is basically the same as the first embodiment, the difference being that in this embodiment, a limit key is used to limit the height adjustment sleeve. Figure 5 As shown, keyways are provided on both the height-adjusting sleeve and the outer sleeve, and the circumferential movement of the height-adjusting sleeve is limited by embedding the limit key into the keyways of the height-adjusting sleeve and the outer sleeve.

[0032] Example 4

[0033] This embodiment is based on the embodiment 1 or embodiment 2 or embodiment 3, preferably, as Figure 6 As shown, the outer dimensions of the height adjustment pad are smaller than the outer dimensions of the bridge bottom plate and the bearing top plate, so as to avoid interference with the external sleeve during the height adjustment and insertion process.

[0034] Example 5

[0035] This embodiment is based on the embodiment 1 or embodiment 2 or embodiment 3, preferably, as Figure 7 As shown, the height-adjusting pad is formed by two E-shaped plates symmetrically assembled together. The E-shaped plates are provided with strip holes, and the width of the strip holes is greater than the diameter of the anchor bolts, so that the strip holes can envelop the anchor bolts.

[0036] An anchoring device for adjusting the height of a bridge support provided in an embodiment of the present invention avoids the removal of bolts and can achieve rapid height adjustment of the bridge support. At the same time, the length of the anchoring bolts is not reduced, and the anchoring performance is not affected. The device is suitable for various types of concrete beam supports and concrete anchoring systems that need to be adjusted in height.

[0037] The present invention is not limited to the above-mentioned specific embodiments. The present invention extends to any new features or any new combination disclosed in this specification, as well as any new method or process steps or any new combination disclosed. If non-substantial changes or improvements made by those skilled in the art without departing from the spirit of the present invention should fall within the scope of protection of the claims of the present invention.

Claims

1. An anchoring device for adjusting the height of a bridge support, comprising: An anchor rod, an outer sleeve and an anchor bolt, wherein the anchor rod is connected to the top of the outer sleeve by threads, and is characterized in that: it also includes a height adjustment sleeve and a limiting structure, the height adjustment sleeve is sleeved in the outer sleeve, the anchor bolt is threadedly connected to the height adjustment sleeve, and the limiting structure is used to limit the circumferential rotation of the height adjustment sleeve; The limiting structure includes a limiting pin, a through hole is formed on the side wall of the outer sleeve, and a key slot is formed on the outer wall of the height adjustment sleeve. The limiting pin is inserted into the key slot through the through hole on the side wall of the outer sleeve to limit the circumferential rotation of the height adjustment sleeve. The limiting structure comprises a height-adjusting sleeve and an outer sleeve, and both the height-adjusting sleeve and the outer sleeve are configured as spline structures; The splines on the height adjustment sleeve are arranged to be one or more, and the splines on the outer sleeve are arranged to be one or more; The limiting structure includes a limiting key, and key slots are provided on the height adjustment sleeve and the outer sleeve. The limiting key is embedded in the key slots of the height adjustment sleeve and the outer sleeve to achieve limiting. It also includes a bridge bottom plate and a support top plate, the end of the outer sleeve is fixed to the bridge bottom plate, and the anchor bolts pass through the support top plate and the bridge bottom plate in sequence and are threadedly connected to the height adjustment sleeve; When the bridge support is raised, a height adjustment pad is provided between the bridge bottom plate and the support top plate; The outer dimensions of the height adjustment pad are smaller than the outer dimensions of the bridge bottom plate and the bearing top plate; The height adjustment pads are two symmetrical E-shaped plates; The E-shaped plate is provided with a strip hole, and the width of the strip hole is greater than the diameter of the anchor bolt.

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