A height adjustment device for slab support

Abstract

The utility model relates to a kind of plate type support height adjustment device, including intermediate steel plate and lower pelvic cavity, the upper support plate type support of intermediate steel plate, the lower pelvic cavity has the recess matched with the intermediate steel plate, the intermediate steel plate is placed in the recess of the lower pelvic cavity, the lower pelvic cavity is provided with filling channel, one side of the filling channel is the import exposed to the outer surface of the lower pelvic cavity, the other side is the outlet extended into the recess;By filling medium in the recess is filled to filling channel, with the increase of filling medium, the intermediate steel plate is jacked up, and the height of the plate type support is adjusted.The utility model has the advantages that:it is suitable for various plate type rubber supports, including circular, rectangular, fixed support, movable support;Plate type support height adjustment function can be realized, stress condition of support is guaranteed by height adjustment, and voiding phenomenon is avoided;Simple structure, relatively small cost increase;Convenient to use, reusable, suitable for promotion.

Description

Technical Field

[0001] This utility model relates to the field of bridge bearing technology, specifically to a plate bearing height adjustment device. Background Technology

[0002] Plate rubber bearings have always been a commonly used product in small and medium-sized highway bridges. They are divided into ordinary plate rubber bearings and PTFE plate rubber bearings. Ordinary bridge bearings are suitable for bridges with spans less than 30m and small displacements. PTFE plate rubber bearings are suitable for bridges with large displacements, such as large-span, multi-span continuous, simply supported beam, and continuous slab beam structures. In practical engineering, plate bearings have a wide range of applications.

[0003] Plate bearings are typically used in multiple parallel arrangements. However, due to construction errors or variations in the height of the beams and piers, uneven stress can occur among the bearings, leading to some bearings becoming detached and causing overload on others, thus affecting their service life. Furthermore, in the renovation of some older bridges, additional plate bearings are required, but it is not always possible to guarantee their proper load-bearing capacity. Summary of the Invention

[0004] The purpose of this utility model is to address the shortcomings of the prior art by providing a plate support height adjustment device. This device is installed below the plate support and can adjust the support height after installation to ensure the support meets the stress requirements. It is suitable for use with plate supports.

[0005] The objective of this utility model is achieved through the following technical solution:

[0006] A plate support height adjustment device is characterized by comprising a middle steel plate and a lower basin, wherein the middle steel plate supports the plate support above it, the lower basin has a groove matching the middle steel plate, the middle steel plate is placed in the groove of the lower basin, the lower basin is provided with a filling channel, one side of the filling channel is an inlet exposed on the outer surface of the lower basin, and the other side is an outlet extending into the groove; a filling medium is added into the groove through the filling channel, and as the filling medium increases, the middle steel plate is lifted, thereby adjusting the height of the plate support.

[0007] The intermediate steel plate has a groove that matches the plate support, and the plate support is placed in the groove of the intermediate steel plate.

[0008] The groove is circular or rectangular.

[0009] A groove is provided in the bottom or lower cavity of the intermediate steel plate, and the groove corresponds to the outlet position of the filling channel.

[0010] The groove is one or more interconnected grooves, spiral grooves, or interconnected grooves.

[0011] A sealing structure is provided between the intermediate steel plate and the lower pelvic cavity.

[0012] The sealing structure uses a sealing ring or an oil seal.

[0013] A limiting pin is provided between the intermediate steel plate and the lower pelvic cavity, and the relative rotation between the two is restricted by the limiting pin.

[0014] The lower basin is equipped with an anchor bolt assembly for anchoring connection with the pier.

[0015] The advantages of this utility model are:

[0016] 1) Applicable to various plate rubber bearings, including round and rectangular bearings, fixed bearings and movable bearings.

[0017] 2) It can realize the height adjustment function of plate bearing, and ensure the stress of the bearing by adjusting the height to avoid the phenomenon of detachment.

[0018] 3) The structure is simple, and the increase in cost is relatively small;

[0019] 4) Easy to use, reusable, and suitable for promotion. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the rectangular plate support structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the circular plate support structure of this utility model;

[0022] Figure 3 This is a schematic diagram of the intermediate steel plate of this utility model;

[0023] Figure 4 This is a schematic diagram of the lower pelvic cavity of this utility model;

[0024] Figure 5 This is a schematic diagram of the groove corresponding to the filling channel of this utility model;

[0025] Figure 6 This is a schematic diagram of the sliding plate support structure of this utility model. Detailed Implementation

[0026] The features and other related features of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments, so as to facilitate the understanding of those skilled in the art:

[0027] like Figure 1-6As shown in the figure, the labels represent: 1. Plate support body, 2. Middle steel plate, 2-1 upper groove, 2-2 groove corresponding to the filling channel, 3. Limiting pin, 4. Sealing structure, 5. Lower basin, 5-1 groove, 6. Filling channel, 7. Anchor bolt assembly, 8. Sliding steel plate.

[0028] Example: Figures 1 to 6 As shown, the plate support height adjustment device in this embodiment includes a plate support body 1, a middle steel plate 2, a lower basin 5, and a filling channel 6. The upper part of the middle steel plate 2 is provided with a groove 2-1 for placing the plate support body 1, and the lower part of the middle steel plate 2 can be placed into and cooperate with the lower basin 5. The filling channel 6 connects the outside and inside of the lower basin 5.

[0029] like Figure 3 As shown, the upper part of the intermediate steel plate 2 is provided with a groove 2-1 for placing the plate support. The groove 2-1 is consistent with the shape and size of the plate support body 1, for example... Figure 1 The rectangle shown Figure 2 The shape is circular. For a rectangular plate support body 1, the upper part of the middle steel plate 2 is rectangular and the lower part is cylindrical; for a circular plate support body 1, both the upper and lower parts of the middle steel plate 2 are cylindrical.

[0030] like Figure 4 As shown, the lower pelvic cavity 5 has a groove 5-1 adapted to fit the intermediate steel plate 2, which can be placed in the groove 5-1. An opening on the outer side of the lower pelvic cavity 5 serves as an injection inlet, extending upwards after passing through the bottom of the lower pelvic cavity 5, and then exiting from the bottom of the cavity to the groove 5-1 to form an injection outlet, thereby connecting the outside and inside of the cavity and forming a filling channel 6. Filling medium is injected into the cavity through the filling channel 6. As the filling medium increases, the intermediate steel plate 2 can be lifted, increasing the overall height.

[0031] In this embodiment, a sealing structure 4, such as a sealing ring or oil seal, is provided between the middle steel plate 2 and the lower basin 5. The sealing structure 4 ensures that there is no leakage during the filling process and guarantees the realization of the height adjustment function.

[0032] In this embodiment, in order to prevent the intermediate steel plate 2 from rotating in the groove 5-1 of the lower basin 5, a limiting pin 3 is provided at the junction of the intermediate steel plate 2 and the groove 5-1. The limiting pin 3 is clamped between the outer wall of the intermediate steel plate 2 and the inner wall of the groove 5-1, thereby restricting the relative rotation between the intermediate steel plate 2 and the groove 5-1 while allowing the intermediate steel plate 2 to be lifted in the groove 5-1.

[0033] like Figure 3As shown, a groove 2-2 is provided at the lower part of the intermediate steel plate 2, which is located above the opening of the filling channel 6. The filling medium can fill the entire groove 2-2 through the filling channel 6, and then uniformly lift the intermediate steel plate 2, thereby achieving uniform lifting of the intermediate steel plate 2 and avoiding only lifting a local part of the intermediate steel plate 2 corresponding to the position above the filling hole, which would increase the lifting difficulty.

[0034] In this embodiment, as Figure 4 and 5 As shown, the groove can be set on the bottom surface of the groove 5-1 in the lower part of the intermediate steel plate 2 or the lower cavity 5, similar to the filling channel 6, forming a certain filling space. The groove can be one or several interconnected grooves, such as... Figure 5 a, can also be a spiral groove, such as Figure 5 b, or other regular or irregular connecting grooves, such as Figure 5 As shown in Figure c. The actual product can be determined according to... Figure 3 or Figure 4 Choose one or two filling channels to correspond to the groove arrangement.

[0035] like Figure 1 As shown, the lower basin 5 is equipped with an anchor bolt assembly 7 for anchoring connection with the pier.

[0036] like Figure 6 As shown, when the plate support is a displacement sliding plate support, a sliding steel plate 8 can be added to the top surface of the plate support body 1.

[0037] This embodiment includes the following steps during construction:

[0038] 1) Assemble the plate bearing height adjustment device into a whole, and place the plate bearing body 1 on the top.

[0039] 2) Place the plate bearing height adjustment device anchor bolt assembly 7 into the reserved hole on the top of the pier, and then pour grout to anchor it.

[0040] 3) The precast beam is placed onto the slab support body 1 or the beam body is cast in place.

[0041] 4) After the above steps are completed, the support installation is finished, and then the height is adjusted. Connect the oil pipe and connector to the filling channel 6.

[0042] 5) Under pressure, fill the groove 5-1 in the lower pelvic cavity 5 with a specific filling medium.

[0043] 6) As the filling medium is filled into the lower pelvic cavity 5, the middle steel plate 2 is lifted to increase the overall height.

[0044] 7) After the internal filling medium has cured, complete the height adjustment.

[0045] Although the above embodiments have described the concept and embodiments of the present invention in detail with reference to the accompanying drawings, those skilled in the art will recognize that various improvements and modifications can still be made to the present invention without departing from the scope of the claims, and therefore will not be elaborated here.

Claims

1. A plate support height adjustment device, characterized in that: The device includes a middle steel plate and a lower basin. The middle steel plate is supported by a plate-type support. The lower basin has a groove that matches the middle steel plate. The middle steel plate is placed in the groove of the lower basin. The lower basin is provided with a filling channel. One side of the filling channel is an inlet exposed on the outer surface of the lower basin, and the other side is an outlet extending into the groove. A filling medium is added to the groove through the filling channel. As the filling medium increases, the middle steel plate is lifted, thereby adjusting the height of the plate-type support.

2. The plate support height adjustment device according to claim 1, characterized in that: The intermediate steel plate has a groove that matches the plate support, and the plate support is placed in the groove of the intermediate steel plate.

3. The plate support height adjustment device according to claim 2, characterized in that: The groove is circular or rectangular.

4. The plate support height adjustment device according to claim 1, characterized in that: A groove is provided in the bottom or lower cavity of the intermediate steel plate, and the groove corresponds to the outlet position of the filling channel.

5. The plate support height adjustment device according to claim 1, characterized in that: The groove is one or more interconnected grooves, spiral grooves, or interconnected grooves.

6. The plate support height adjustment device according to claim 1, characterized in that: A sealing structure is provided between the intermediate steel plate and the lower pelvic cavity.

7. The plate support height adjustment device according to claim 6, characterized in that: The sealing structure uses a sealing ring or an oil seal.

8. The plate support height adjustment device according to claim 1, characterized in that: A limiting pin is provided between the intermediate steel plate and the lower pelvic cavity, and the relative rotation between the two is restricted by the limiting pin.

9. The plate support height adjustment device according to claim 1, characterized in that: The lower basin is equipped with an anchor bolt assembly for anchoring connection with the pier.

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