A spiral height-adjusting support

Abstract

The utility model belongs to the technical field of bridge bearings, and specifically relates to a spiral height-adjustable bearing. The spiral height-adjustable bearing comprises a lower bearing plate, an upper bearing plate, and a spiral lifting mechanism arranged therebetween, wherein the spiral lifting mechanism comprises a cylinder arranged on the lower bearing plate, the inner wall of the cylinder is connected to a stud by a thread, a plug hole is arranged on the upper part of the stud, a lever is inserted into the plug hole, and is used to drive the stud to rotate and lift, the stud is connected to a locking ring by a thread, the locking ring corresponds to the cylinder of the lower bearing plate, and is tightened to lock the stud; the spiral height-adjustable bearing has a simple structure, is easy to use, and has the characteristics of stepless height adjustment, and unlimited height adjustment amount and height adjustment times.

Description

Technical Field

[0001] The utility model belongs to the technical field of bridge supports, and specifically relates to a spiral height-adjustable support. Background Art

[0002] Rail transit lines will cross some areas with severe settlement. Once settlement occurs, it will directly cause the track structure laid on the bridge deck to deform and eventually lead to poor track smoothness. When the train passes at high speed, its dynamic performance will be affected, and in severe cases it may even threaten driving safety.

[0003] At present, adjusting the height of the bearing is a better way to solve the settlement of bridge piers. After settlement occurs, the height of the bearing is adjusted to ensure the smoothness of the bridge deck track. Traditional height adjustment methods mainly include pad height adjustment, wedge height adjustment, filling height adjustment, etc. Among them, the pad height adjustment method cannot be steplessly adjusted, the height adjustment accuracy is poor, and the height adjustment pad is not easy to install due to the small space at the bottom of the beam; the wedge slope in the wedge height adjustment cannot be too large, the height adjustment amount is limited, and it is not suitable for occasions with large height adjustments; after the filling height adjustment method is carried out, due to the blockage of the pipeline, it can generally only be adjusted once. Therefore, in order to achieve the problems of stepless height adjustment of the bearing, small height adjustment amount and limited number of effective height adjustments, it is urgent to make technical improvements to the bearing structure. Utility Model Content

[0004] The utility model aims to provide a spiral height-adjusting support with a simple structure and convenient use, which has the characteristics of stepless height adjustment, unlimited height adjustment amount and unlimited height adjustment times.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A spiral height-adjustable support, characterized in that it comprises a lower support plate, an upper support plate and a spiral lifting mechanism arranged therebetween, the spiral lifting mechanism comprising a cylinder arranged on the lower support plate, the inner wall of the cylinder being connected to a stud via a thread, an insertion hole being arranged on the upper part of the stud, a lever being inserted into the insertion hole for driving the stud to rotate and lift, the stud being connected to a locking ring via a thread, the locking ring corresponding to the cylinder of the lower support plate, and being tightened to lock the stud.

[0007] Additional technical features of the above-mentioned spiral height-adjusting support include:

[0008] ——A flange covering the outer wall of the lower support plate cylinder is provided at the lower edge of the locking ring, and a threaded hole is provided on the flange. A bolt is screwed into the threaded hole to tighten the outer wall of the lower support plate cylinder;

[0009] The upper end of the stud is connected to the bottom surface of the upper support plate through a spherical revolute pair, the upper end of the stud is provided with a spherical groove, and the bottom surface of the upper support plate is provided with a spherical crown protrusion;

[0010] ——A limiting column is provided at the center of the spherical groove, a limiting groove which is spliced ​​with the limiting column is provided at the center of the spherical crown protrusion, and a movement gap is provided between the limiting column and the limiting groove;

[0011] - A sliding plate is arranged above the upper support plate, and the sliding plate is connected to the top surface of the upper support plate through a plane sliding pair;

[0012] The planar sliding pair includes a guide mechanism, which includes a linear slide bar arranged on the top surface of the upper support plate, and a guide groove cooperating with the linear slide bar is arranged on the bottom surface of the sliding plate;

[0013] ——The linear slide is installed in the positioning groove on the top surface of the upper support plate by a number of screws, a stainless steel plate is laid in the guide groove, a wear-resistant plate is arranged on the surface of the linear slide, and the stainless steel plate and the wear-resistant plate are combined to form a linear sliding pair.

[0014] Compared with the prior art, the spiral height-adjustable support provided by the utility model has the following advantages: a spiral lifting mechanism is arranged between the upper support plate and the lower support plate of the novel height-adjustable support, comprising a cylinder of the lower support plate, the inner wall of the cylinder being connected to a stud by a thread, a socket being arranged on the upper part of the stud, a lever being inserted into the socket to drive the stud to rotate and lift, i.e. vertical height adjustment is achieved through thread rotation, and it has the characteristics of stepless height adjustment, and is not limited by the height adjustment amount and the number of height adjustment times; secondly, the stud is connected to a locking ring by a thread, the locking ring corresponds to the cylinder of the lower support plate, the stud is tightened and locked, and after the height is adjusted, the locking ring is rotated to tighten the cylinder to achieve stud positioning and locking, and it has the advantages of compact structure, convenient use, safety and durability. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a structural schematic diagram of a spiral height-adjusting support of the utility model;

[0016] Figure 2 A schematic diagram of another structure of a spiral height-adjustable support. DETAILED DESCRIPTION

[0017] The structure and working principle of the novel spiral height-adjusting support provided by the utility model are further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] In the description of the present invention, unless otherwise specified, the terms "top / bottom", "upper / lower" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0019] It should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "set / provided" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0020] like Figure 1 As shown, the structure of the novel spiral height-adjustable support includes an upper support plate 1, a lower support plate 2 and a spiral lifting mechanism arranged therebetween, the spiral lifting mechanism including a cylinder 31 arranged on the lower support plate 2, the inner wall of the cylinder 31 is connected to a stud 32 via a thread 30, a socket 33 is arranged on the upper part of the stud 32, a lever is inserted into the socket 33, and is used to drive the stud 32 to rotate and lift, the stud 32 is connected to a locking ring 34 via a thread 30, the locking ring 34 corresponds to the cylinder 31 of the lower support plate 2, and is tightened to lock the stud 32.

[0021] Its working principle is as follows: a spiral lifting mechanism is added between the upper support plate 1 and the lower support plate 2 of the new height-adjustable support, which is realized by a stud 32 connected by a thread in the cylinder 31 of the lower support plate 2. A lever is inserted into the upper socket 33 of the stud 32, and the lever is moved to drive the screw to rotate to achieve spiral lifting. The height of the upper support plate 1 changes accordingly, and the spiral feed realizes stepless height adjustment of the stud 32, and the height adjustment amount and the number of times of the support are not restricted; at the same time, the stud 32 is connected to a locking ring 34 by a thread, and the locking ring 34 corresponds to the cylinder 31 of the lower support plate 2. After the height adjustment is completed, the locking ring 34 is rotated to tighten the cylinder 31 of the lower support plate 2, similar to the tightening effect of a nut, so that the nut is positioned in the cylinder 31, and the height of the support is stable.

[0022] In the structure constituting the above-mentioned novel spiral height-adjusting support,

[0023] In one embodiment, the lower edge of the locking ring 34 is provided with a flange 35 covering the outer wall of the cylinder 31 of the lower support plate 2, and a threaded hole is provided on the flange 35. A bolt 36 is screwed into the threaded hole to tighten the outer wall of the cylinder 31 of the lower support plate 2. The flange 35 extending downward from the edge of the locking ring 34 forms a sleeve covering the outer wall of the cylinder 31 of the lower support plate 2, so that the socket positioning is more secure, the center position of the stud 32 is prevented from being offset, and the vertical lifting is more stable. The outer wall of the cylinder 31 is tightened by the bolt 36 on the flange 35, so that the stud 32 is firmly positioned and locked. The inner side of the flange 35 and the outer side of the outer wall of the cylinder 31 can also be connected by threads to further improve the connection strength.

[0024] ——Preferably, in order to enable the bearing to obtain a rotation effect, the upper end of the above-mentioned stud 32 is connected to the bottom surface of the upper bearing plate 1 through a spherical rotation pair 41. The specific structural form is that the upper end of the stud 32 is set as a spherical groove 51, the bottom surface of the upper bearing plate 1 is provided with a spherical crown protrusion 52, and a spherical rotation pair 41 is set between the spherical groove 51 and the spherical crown protrusion 52. The rotation pair is generally composed of a stainless steel plate and a wear-resistant plate;

[0025] ——Furthermore, a limiting column 53 is provided at the center of the spherical groove 51, and a limiting groove 54 is provided at the center of the spherical crown protrusion 52, which is socket-fitted with the limiting column 53. A movement gap is provided between the limiting column 53 and the limiting groove 54, which can not only realize mutual rotation but also prevent excessive deviation, thereby having an anti-falling beam effect;

[0026] --like Figure 2 As shown, a sliding plate 6 is arranged above the upper support plate 1, and the sliding plate 6 is connected to the top surface of the upper support plate 1 through a plane sliding pair 42, that is, the support has multiple motion effects of spherical rotation and plane sliding, and plays a better role in shock reduction and isolation;

[0027] ——Preferably, the above-mentioned plane sliding pair 42 includes a guide mechanism, which includes a linear slide bar 61 arranged on the top surface of the upper support plate 1, and a guide slot 62 cooperating with the linear slide bar 61 is arranged on the bottom surface of the sliding plate 6. The linear slide bar 61 moves in the guide slot 62, so that the sliding plate 6 and the lower part of the support can slide relative to each other. At this time, the sliding plate 6 is located at the uppermost part of the support and can be connected to the bottom of the bridge beam through an anchor assembly;

[0028] ——Furthermore, the above-mentioned linear slide 61 is installed in the positioning groove on the top surface of the upper support plate 1 by a number of screws 63. The linear slide 61 and the positioning groove are preferably placed in the center or radial position of the top surface of the upper support plate 1 to ensure the balance of plane sliding. A stainless steel plate is laid in the guide groove 62, and the stainless steel plate can also extend out of the groove. A wear-resistant plate is arranged on the surface of the linear slide 61. The stainless steel plate and the wear-resistant plate are combined to form a linear sliding pair 43, which improves the durability of the guide mechanism. The material of the wear-resistant plate is selected from polytetrafluoroethylene, modified polytetrafluoroethylene or ultra-high molecular weight polyethylene plate.

[0029] The above-described implementation modes are only used to illustrate the technical solution of the utility model, and are not limiting conditions for the implementation of the utility model. Therefore, any other modifications or equivalent replacements of configuration dimensions and internal structures made to the technical solution of the utility model, as long as they do not depart from the spirit and scope of the technical solution of the utility model, should be included in the scope of the claims of the utility model.

Claims

1. A spiral height-adjusting support, characterized in that: It includes a lower support plate, an upper support plate and a spiral lifting mechanism arranged therebetween, the spiral lifting mechanism includes a cylinder arranged on the lower support plate, the inner wall of the cylinder is connected to a stud via a thread, an insertion hole is arranged on the upper part of the stud, a lever is inserted into the insertion hole, and is used to drive the stud to rotate and lift, the stud is connected to a locking ring via a thread, the locking ring corresponds to the cylinder of the lower support plate, and is tightened to lock the stud.

2. The spiral height-adjustable support according to claim 1, characterized in that: A flange covering the outer wall of the lower support plate cylinder is provided at the lower edge of the locking ring, and a threaded hole is provided on the flange. A bolt is screwed into the threaded hole to tighten the outer wall of the lower support plate cylinder.

3. A spiral height-adjustable support according to claim 1 or 2, characterized in that: The upper end of the stud is connected to the bottom surface of the upper support plate through a spherical rotation pair. The upper end of the stud is set as a spherical groove, and the bottom surface of the upper support plate is provided with a spherical crown protrusion.

4. The spiral height-adjustable support according to claim 3, characterized in that: A limiting column is provided at the center of the spherical groove, a limiting groove which is spliced ​​with the limiting column is provided at the center of the spherical crown protrusion, and a movement gap is provided between the limiting column and the limiting groove.

5. A spiral height-adjustable support according to claim 1 or 2, characterized in that: A sliding plate is arranged above the upper support plate, and the sliding plate is connected to the top surface of the upper support plate through a plane sliding pair.

6. The spiral height-adjustable support according to claim 5, characterized in that: The planar sliding pair comprises a guide mechanism, which comprises a linear slide bar arranged on the top surface of the upper support plate, and a guide groove cooperating with the linear slide bar is arranged on the bottom surface of the sliding plate.

7. The spiral height-adjustable support according to claim 6, characterized in that: The linear slide is installed in the positioning groove on the top surface of the upper support plate by a plurality of screws, a stainless steel plate is laid in the guide groove, a wear-resistant plate is arranged on the surface of the linear slide, and the stainless steel plate and the wear-resistant plate are combined to form a linear sliding pair.

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