Semi-automatic height adjustment device

Abstract

A semi-automatic height adjustment device comprises an upper height adjustment seat plate, a double-step staggered inner ring, a double-step staggered outer ring, a height adjustment bottom plate and a lifting mechanism for lifting or lowering the upper height adjustment seat plate; the double-step staggered inner ring and the double-step staggered outer ring are annular structures and are concentrically arranged, both sides of the double-step staggered inner ring and the double-step staggered outer ring are symmetrical step structures, the single-side step structure of the double-step staggered inner ring and the double-step staggered outer ring is a step descending from the middle to both sides, the double-step staggered inner ring and the double-step staggered outer ring are placed with an upper height adjustment seat plate, the step surfaces of the double-step staggered inner ring and the double-step staggered outer ring fit with the lower surface of the upper height adjustment seat plate, and the double-step staggered inner ring and the double-step staggered outer ring are rotatably fixed on the height adjustment bottom plate with the center of the circle as the center. The device is easy to operate and accurately adjusted, and realizes a large range and high-precision height adjustment function.

Description

Technical Field

[0001] The invention relates to the technical field of bridges or construction engineering, in particular to a semi-automatic height-adjusting device. Background Art

[0002] With the development of my country's rail transit industry, the railway has entered the high-speed era. In the high-speed railway or future maglev rail transit industry, the requirements for the smoothness of foundations and bridges are getting higher and higher, and the rigidity requirements are getting stricter and stricter. When the foundation of the bridge piers settles or the beam itself deforms unevenly, the line smoothness will not meet the requirements. At this time, it is necessary to use a height adjustment device or adjust the height of the beam by raising the support.

[0003] Since bridge bearings are important bridge components, bridge devices with height adjustment functions are mostly combined with bearings for height adjustment. The existing height adjustment bearings in China mostly adopt height adjustment methods such as steel pad height adjustment, slope height adjustment (such as spiral height adjustment, wedge height adjustment) and filling height adjustment. In slope height adjustment, spiral height adjustment and wedge height adjustment are achieved by rotating the internal slope such as the spiral thread pair and the mutual movement of the slope wedge blocks. This height adjustment method can achieve a certain degree of stepless height adjustment, but the height adjustment amount is limited by the total slope height. Another disadvantage of slope height adjustment is that when the constraint is weakened, there is a risk of the slope sliding down. Filling height adjustment is to set a filling channel structure at the bottom of the bearing. When the bearing needs to be raised, the filling material is injected into the bearing through the filling channel to form a filling layer inside the bearing to achieve the purpose of height adjustment. However, after the filling material is injected, due to the blockage of the pipeline, it can generally only be adjusted once. To raise the traditional pad, a pad needs to be added between the support and the beam. The height of the pad often affects the fit between the bolts and embedded parts. A pad that is too large can easily cause the bolts and embedded parts to become empty, and a bolt that is too long cannot be installed inside the support, so there is an applicability issue. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a semi-automatic height adjustment device, which is easy to operate and accurate in adjustment, and can achieve a large-range and high-precision height adjustment function.

[0005] In order to achieve the above technical purpose, the technical solution adopted is: a semi-automatic height adjustment device, including an upper height adjustment seat plate, a double-step staggered inner ring, a double-step staggered outer ring, a height adjustment bottom plate and a lifting mechanism for lifting or lowering the upper height adjustment seat plate;

[0006] The double-step staggered inner ring and the double-step staggered outer ring are annular structures and are arranged concentrically. Both sides of the double-step staggered inner ring and the double-step staggered outer ring are symmetrical step structures. The single-side step structure of the double-step staggered inner ring and the double-step staggered outer ring is a descending step from the middle to both sides. The double-step staggered inner ring and the double-step staggered outer ring are placed with an upper height-adjustable seat plate, and the step surfaces of the double-step staggered inner ring and the double-step staggered outer ring are matched with the lower surface of the upper height-adjustable seat plate. The double-step staggered inner ring and the double-step staggered outer ring are rotatably fixed on the height-adjustable base plate with the center of the circle as the center.

[0007] A height-adjusting pad is provided between the double-step staggered outer ring and the upper height-adjusting seat plate. The height-adjusting pad has upper and lower step staggered surfaces that are consistent with the upper height-adjusting seat plate and the double-step staggered outer ring. When adjusting the height, the two height-adjusting pads are placed relatively on the upper height-adjusting seat plate so that the upper surface formed by the height-adjusting pad and the double-step staggered outer ring fits with the lower surface of the upper height-adjusting seat plate.

[0008] The height-adjusting pad is formed by stacking a single-layer pad or multiple-layer pads.

[0009] An annular slider is provided on the lower surface of the double-step staggered inner ring and the double-step staggered outer ring, and an annular groove matching the annular slider is provided on the upper surface of the height-adjusting base plate, or an annular groove is provided on the lower surface of the double-step staggered inner ring and the double-step staggered outer ring, and an annular slider matching the annular groove is provided on the upper surface of the height-adjusting base plate.

[0010] A friction pair or a rolling steel ball is also arranged in the annular groove.

[0011] Pits A are arranged on the upper surfaces of the double-step staggered inner ring and the double-step staggered outer ring.

[0012] The lower surface of the height-adjusting pad is provided with a convex block matched with the concave pit A, and the upper surface of the height-adjusting pad is also provided with a concave pit B.

[0013] The lifting mechanism is a hydraulic jack.

[0014] A platform for placing a jacking mechanism is arranged at the center of the height-adjustable base plate.

[0015] Anchor holes are arranged around the height-adjustable bottom plate.

[0016] The beneficial effects of the present invention are:

[0017] 1) The semi-automatic multi-stage height adjustment device of the present invention can achieve unlimited graded height adjustment. When a suitable initial position is set, the device can also achieve a good lowering function after height adjustment.

[0018] 2) The semi-automatic multi-stage height-adjustable support described in the present invention is not limited in the number of times it can be raised or lowered multiple times according to foundation settlement or changes in beam structure.

[0019] 3) The semi-automatic multi-stage height adjustment device of the present invention is easy to adjust and has high adjustment accuracy. After vertical adjustment, it can achieve stable constraint. The overall device is light, simple in structure and low in cost.

[0020] 4) The height adjustment principle of the present invention is spiral step height adjustment, and the double-helix staggered method is fixed, which is different from the thread slope height adjustment method. Due to the advantages of the pad height adjustment, the force and position conditions of other parts are not changed during the height adjustment process. The height problem is solved only by rotating the inner and outer rings of the double helix. At the same time, it can solve the bolt matching problem in the traditional pad height adjustment and ensure the stability of the support after the height adjustment. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the present invention;

[0022] Figure 2 It is a half-section schematic diagram of the present invention;

[0023] Figure 3 It is a schematic diagram of the rotation height adjustment of the present invention;

[0024] Figure 4 It is a schematic diagram of the height adjustment pad of the present invention;

[0025] Figure 5 This is a schematic diagram of multi-layer height adjustment of the height adjustment pad of the present invention;

[0026] Figure 6 It is a schematic diagram of the jacking mechanism of the present invention;

[0027] Figure 7 This is a schematic diagram of the positions of the inner and outer rings before rotation of the present invention;

[0028] Figure 8 It is a schematic diagram of the contact surface before rotation of the present invention;

[0029] Fig. 9 This is a schematic diagram of the positions of the inner and outer rings after rotation of the present invention;

[0030] Fig.10 It is a schematic diagram of the contact surface after rotation of the present invention;

[0031] Fig.11 This is an exploded view of the installation of the multi-layer height-adjusting pad of the present invention;

[0032] Fig.12 for Fig.11 Installation completion diagram;

[0033] Fig.13 This is a schematic diagram of the installation of a single-layer height-adjusting pad of the present invention;

[0034] In the figure: 1. Raise the seat plate, 2. Double-step staggered inner ring, 3. Double-step staggered outer ring, 4. Raise the bottom plate, 5. Hydraulic jack, 6. Raise the pad, 7. Pit A, 8. Bump, 9. Pit B. DETAILED DESCRIPTION

[0035] The present invention achieves its invention task by adopting the following technical solutions:

[0036] A semi-automatic height adjustment device comprises an upper height adjustment seat plate 1, a double-step staggered inner ring 2, a double-step staggered outer ring 3, a height adjustment bottom plate 4 and a lifting mechanism for lifting or lowering the upper height adjustment seat plate 1.

[0037] The upper part of the height-adjusting seat plate 1 is flat, and a threaded hole is provided for connecting with the lower seat plate of the spherical support. The lower part of the upper seat plate is a sawtooth step, which is symmetrically distributed. The optimal symmetry is Figure 1 The direction is based on the left-right direction, and the single-sided step structure on the left is symmetrical front to back. The size of the serrated step is determined according to the conventional design. The serrated step can be provided with a plane hole groove or a boss in the step plane. The surfaces of the double-step staggered inner ring 2 and the double-step staggered outer ring 3 are correspondingly provided with bosses or plane hole grooves to fix the double-step staggered inner ring 2 and the double-step staggered outer ring 3.

[0038] The double-step staggered inner ring 2 and the double-step staggered outer ring 3 are provided with inner and outer step surface structures consistent with the step shape of the lower surface of the upper height-adjustable seat plate 1. In the initial state, the double-step staggered inner ring 2 and the double-step staggered outer ring 3 fit with the double-step staggered end surface structure at the lower part of the upper seat plate to form a contact pair.

[0039] like Figure 1 As shown, the double-step staggered inner ring 2 and the double-step staggered outer ring 3 are annular structures and are concentrically arranged. Both sides of the double-step staggered inner ring 2 and the double-step staggered outer ring 3 are symmetrical step structures. Figure 1 , Figure 2 In the initial state shown in the figure, the single-side staircase structure of the double-step staggered inner ring 2 and the double-step staggered outer ring 3 is a step-down type staircase from the middle to both sides. Figure 1The positions shown are rotated 90° together as the initial state, and the single-sided step structure of the double-step staggered inner ring 2 and the double-step staggered outer ring 3 is a step that rises from the middle to both sides, and the single-sided step structure on the left is symmetrical with the single-sided step structure on the right, while the single-sided step structures on both sides are symmetrical front to back, and the double-step staggered inner ring 2 and the double-step staggered outer ring 3 are placed with an upper height-adjusting seat plate 1. In the initial state, the step surfaces of the double-step staggered inner ring 2 and the double-step staggered outer ring 3 fit with the lower surface of the upper height-adjusting seat plate 1, and the double-step staggered inner ring 2 and the double-step staggered outer ring 3 are rotatably fixed on the height-adjusting base plate 4 with the center of the circle as the center, and the support can be adjusted by staggered rotation of the double-step staggered inner ring 2 and the double-step staggered outer ring 3. The more staggered step surfaces there are, the higher the height adjustment will be, and vice versa, the lowering operation can be performed in the reverse direction.

[0040] like Figure 4 , Fig.12 , Fig.13 As shown, a height adjustment pad 6 is provided between the double-step staggered outer ring 3 and the upper height adjustment seat plate 1. The height adjustment pad 6 has an upper and lower step staggered surface that is consistent with the upper height adjustment seat plate 1 and the double-step staggered outer ring 3 on one side and in one direction. When adjusting the height, the two height adjustment pads 6 are relatively placed on the upper height adjustment seat plate 1, so that the upper surface composed of the height adjustment pad and the double-step staggered outer ring is matched with the lower surface of the upper height adjustment seat plate. The supplementary height adjustment pad 6 must ensure that the upper surface after height adjustment is based on the original bilateral symmetry of the double-step staggered outer ring 3, and the single side is still symmetrical front and back, that is, the step surface in the initial state is raised as a whole. The specially made height adjustment pad 6 has a step staggered surface that is consistent with the upper height adjustment seat plate, the inner and outer rings of the double-step staggered layer, and can be matched with the lower part of the upper height adjustment seat plate and the inner and outer rings of the double-step staggered layer, play a supporting role, limit horizontal sliding, and have good horizontal stiffness.

[0041] like Fig.11 , Fig.12 , Fig.13 As shown, the height-adjusting pad 6 is formed by stacking a single layer or multiple layers, and the overall height is adjusted by stacking multiple layers or installing a single layer.

[0042] The lower surfaces of the double-step staggered inner ring 2 and the double-step staggered outer ring 3 are provided with an annular slider or an annular groove, and the matching annular groove or annular slider is provided on the upper surface of the height adjustment base plate 4. The double-step staggered inner ring 2 and the double-step staggered outer ring are respectively constrained by the height adjustment base plate to fix the double-step staggered inner and outer rings as a whole. Inside the annular groove, a sliding friction pair of a stainless steel plate-slide plate is set or a steel ball rolling method is adopted to reduce the friction resistance, so as to facilitate the staggered rotation of the inner and outer rings. The staggered rotation of the double-step inner and outer rings is achieved by pushing and other methods. The pit A7 is set on the upper surface of the inner and outer rings, and the inner and outer rings are staggered by special tools. If the structural size is large, a push rod can be set at a part of the outer ring to achieve push rotation.

[0043] The lower surface of the height-adjusting pad 6 is provided with a protrusion 8 that matches the pit A7 and is used to be fixedly connected to the double-step staggered outer ring 3. The upper surface of the height-adjusting pad 6 is also provided with a pit B9 for pushing or docking and fixing with the upper height-adjusting seat plate 1.

[0044] The lifting mechanism is a hydraulic jack. A platform for placing the lifting mechanism is provided at the center of the height adjustment base plate 4. Anchor holes are provided around the height adjustment base plate 4 for connecting and fixing the height adjustment device as a whole with the lower components.

[0045] When the height of the bridge needs to be raised, first calculate the height to be adjusted according to the height adjustment amount. If the height adjustment amount is appropriate, it can be adjusted directly without using a height adjustment pad. If the height adjustment amount is too large, it is necessary to use a special height adjustment pad 6 to assist in height adjustment. When the height adjustment is made on site, the lower seat plate and its upper structure are lifted to the corresponding position using a lifting mechanism (hydraulic jack 5). After lifting, a special tool is used to rotate the inner and outer rings of the double-step staggered layers. When the height adjustment amount is not greater than the staggered layer height, the inner and outer rings are rotated using a tool to form staggered gaps inside and outside so that the upper height adjustment seat plate 1 can completely fit the gap and complete the height adjustment. When the height adjustment amount is greater than the total height of the staggered layers, a special height adjustment pad 6 is placed on the outer ring until the specified height is reached. The outer ring position is adjusted by rotation. When the inner and outer rings are too large, a push rod is set on the outer ring to facilitate the adjustment of the inner and outer rings so that the upper height adjustment seat plate fits within the staggered gaps of the inner and outer rings. At this point, the vertical height adjustment of the support is completed.

[0046] When the semi-automatic adjustment device is fixed under the support, the vertical force is transmitted from top to bottom in the following paths: the upper seat plate of the support, the plane friction pair, the middle seat plate of the support, the spherical friction pair, the lower seat plate of the support, the height adjustment device upper height adjustment plate 1, the double-step staggered inner and outer rings, the height adjustment device height adjustment bottom plate 4 to the support pad stone; the horizontal force transmission of the support is from top to bottom in the following paths: the upper anchor bolt, the upper seat plate of the support, the guide friction pair, the lower seat plate of the support, the connecting bolt, the height adjustment device upper height adjustment plate, the double-step staggered inner and outer rings, the lower seat plate of the height adjustment device, the lower anchor bolt to the support pad stone. A plane friction pair is arranged between the upper seat plate of the support and the middle seat plate of the support, which plays a horizontal sliding function; a spherical friction pair is arranged between the middle seat plate of the support and the lower seat plate of the support, which plays a vertical rotation function.

[0047] Example 1

[0048] Example 1 provides a semi-automatic multi-stage height adjustment device, see Figure 1 and Figure 2 It mainly consists of an upper height-adjustable seat plate 1, a double-step staggered inner ring 2, a double-step staggered outer ring 3, and a height-adjustable bottom plate 4, a total of 4 parts, of which Figure 2 This is a half-section schematic diagram of the height adjustment device structure.

[0049] There is a cavity in the middle of the upper height-adjustable seat plate 2, the heights of the annular steps are in multiples, a single step is fan-shaped, and the plane projection of the steps is concentrically radial. Viewed from the side, the steps are symmetrically distributed along the center line. There is a cylindrical boss on the surface of a single step, which cooperates with the pit A7 on the double-step staggered inner ring 2 and the double-step staggered outer ring 3 to limit the horizontal sliding of the upper height-adjustable seat plate.

[0050] The double-step staggered inner ring 2 and the double-step staggered outer ring 3 are concentric circles with the same surface width, which is half the width of the upper height-adjustable seat plate. The lower bottom surfaces of the inner and outer rings have an annular boss, which is concentric with the annular groove of the lower plate. The height of the inner and outer rings is consistent with the height of the upper height-adjustable seat plate. After rotating 90°, they fully fit with the upper height-adjustable seat plate. There are circular hole pits A on the fan-shaped surfaces of the inner and outer rings, which correspond to the boss of the height-adjustable seat plate, limiting the horizontal sliding of the entire device.

[0051] When the height adjustment amount is an integer multiple of the height adjustment step, rotational height adjustment is adopted. The solution is to use the hydraulic jack 5 to lift the upper height adjustment seat plate 1 and its upper structure to an integer multiple of the step height + 1 times the height of the cylindrical boss. After lifting the upper height adjustment seat plate 1, use a tool to rotate the double-step staggered inner ring 2 clockwise. Similarly, rotate the double-step staggered outer ring 3 in a counterclockwise direction so that they are respectively in contact with the lifted upper height adjustment seat plate, and the pits of the inner and outer rings are aligned with the circular boss of the upper height adjustment seat plate, and the planes of the inner and outer rings are staggered to form a platform. After that, the oil pressure is released, and the upper height adjustment seat plate falls down and fits into the inner and outer ring platforms to complete the height adjustment. After the height adjustment is completed, the overall device is as follows Figure 3 As shown in the figure. During the rotation height adjustment process, the height adjustment amount is limited by the step height and cannot be finely adjusted. Therefore, the use of a pad height adjustment solution can further solve the problem of fine adjustment.

[0052] like Figure 7 , Figure 8 As shown, a detailed description is given by taking the half-side inner and outer ring step surfaces as an example. The inner half-side step surfaces are e1, d1, c1, b1, a1, a2, b2, c2, d2, and e2, respectively. In the initial state, the corresponding step surfaces are E1, D1, C1, B1, A1, A2, B2, C2, D2, and E2. The step surface outside the inner ring is completely in contact with the step surface of the lower surface of the upper height-adjusting seat plate, and the upper height-adjusting seat plate 1 is raised to a step height, as shown in FIG. Fig. 9 As shown, use a tool to rotate the double-step staggered inner ring 2 clockwise and the double-step staggered outer ring 2 counterclockwise, so that B1 corresponds to a2, A1 corresponds to b2, and the other planes correspond in sequence, and then lower the upper height plate to fit the inner and outer ring platforms, as shown. Fig.10As shown, in the half-side direction, the outer ring step surfaces in contact with the lower surface of the upper height-adjusting seat plate are E1, D1, C1, and B1, and the inner ring step surfaces are b2, c2, d2, and e2. Rotating the illustrated half side 180° shows the contact situation of the other half side, completing the height adjustment of one step. Therefore, the required step height and number of step layers can be designed according to the required height adjustment amount and number of height adjustment times.

[0053] Example 2

[0054] When the height adjustment is higher than the overall height of the existing height adjustment device, or the height adjustment is too fine to be adjusted by rotating the height adjustment, the height adjustment is performed by using a pad. The solution is to use a hydraulic jack 5 to lift the height adjustment upper plate 1, and then insert a suitable height adjustment pad according to the height adjustment amount. Figure 4 The height of the pad can be customized to achieve the appropriate height. If the height adjustment is too large, multiple pads can be stacked and placed on the stepped outer ring surface, such as Figure 5 , Fig.11 , Fig.12 As shown, the lower boss of the height-adjusting pad 6 is aligned with the concave pit of the double-step staggered outer ring 3, and the required height can be achieved by multiple stacking. In this way, the pad height adjustment of a larger height can be achieved. The vertical load during the height adjustment process is borne by the hydraulic jack 5, as shown in FIG. Figure 6 As shown, when the pad is added to the new outer ring and can fit with the outer ring below the upper height-adjustable seat plate, rotate the outer ring to align the position, release the oil pressure to make the upper height-adjustable seat plate fall, and the corresponding pits B and pit A cooperate with the circular boss to complete the adjustment of the support height.

Claims

1. A semi-automatic height adjustment device, characterized in that: It comprises an upper height-adjustable seat plate (1), a double-step staggered inner ring (2), a double-step staggered outer ring (3), a height-adjustable bottom plate (4), and a lifting mechanism for lifting or lowering the upper height-adjustable seat plate (1); The double-step staggered inner ring (2) and the double-step staggered outer ring (3) are annular structures and are arranged concentrically. Both sides of the double-step staggered inner ring (2) and the double-step staggered outer ring (3) are symmetrical step structures. The single-side step structure of the double-step staggered inner ring (2) and the double-step staggered outer ring (3) is a step that descends from the middle to both sides. The double-step staggered inner ring (2) and the double-step staggered outer ring (3) are provided with an upper height-adjusting seat plate (1). The step surfaces of the double-step staggered inner ring (2) and the double-step staggered outer ring (3) fit with the lower surface of the upper height-adjusting seat plate (1). The double-step staggered inner ring (2) and the double-step staggered outer ring (3) are rotatably fixed on the height-adjusting bottom plate (4) with the center of the circle as the center. A height adjustment pad (6) is provided between the double-step staggered outer ring (3) and the upper height adjustment seat plate (1), and the height adjustment pad (6) has upper and lower step staggered surfaces that are consistent with the upper height adjustment seat plate (1) and the double-step staggered outer ring (3). When adjusting the height, the two height adjustment pads (6) are placed on the upper height adjustment seat plate (1) relative to each other, so that the upper surface formed by the height adjustment pad (6) and the double-step staggered outer ring (3) fits with the lower surface of the upper height adjustment seat plate (1); An annular slider is provided on the lower surface of the double-step staggered inner ring (2) and the double-step staggered outer ring (3), and an annular groove matching the annular slider is provided on the upper surface of the height adjustment base plate (4), or an annular groove is provided on the lower surface of the double-step staggered inner ring (2) and the double-step staggered outer ring (3), and an annular slider matching the annular groove is provided on the upper surface of the height adjustment base plate (4).

2. A semi-automatic height adjustment device as claimed in claim 1, characterized in that: The height adjustment pad (6) is formed by stacking a single layer or multiple layers.

3. A semi-automatic height adjustment device as claimed in claim 1, characterized in that: A friction pair or a rolling steel ball is also arranged in the annular groove.

4. A semi-automatic height adjustment device as claimed in claim 1, characterized in that: Concave pits A (7) are provided on the upper surfaces of the double-step staggered inner ring (2) and the double-step staggered outer ring (3).

5. A semi-automatic height adjustment device as claimed in claim 1, characterized in that: The lower surface of the height-adjusting pad (6) is provided with a protrusion (8) that matches the concave pit A (7), and the upper surface of the height-adjusting pad (6) is also provided with a concave pit B (9).

6. A semi-automatic height adjustment device as claimed in claim 1, characterized in that: The lifting mechanism is a hydraulic jack.

7. A semi-automatic height adjustment device as claimed in claim 1, characterized in that: A platform for placing a lifting mechanism is provided at the center of the height-adjusting bottom plate (4).

8. A semi-automatic height adjustment device as claimed in claim 1, characterized in that: Anchor holes are arranged around the height-adjusting bottom plate (4).

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