Bridge height adjusting support

Abstract

The utility model discloses a bridge height adjusting support, and belongs to the technical field of bridge construction, the bridge height adjusting support comprises an upper support plate, a lower support plate and a height adjusting assembly, the height adjusting assembly comprises a movable bottom plate, two adjusting inclined blocks, a left-handed screw, a right-handed screw and an adjusting knob, the movable bottom plate is mounted below the upper support plate, and the adjusting inclined blocks are arranged on the movable bottom plate. One end of the left-handed screw is fixed to the inner side face of one adjusting inclined block, the other end of the left-handed screw is inserted into the adjusting knob in a threaded mode, one end of the right-handed screw is fixed to the inner side face of the other adjusting inclined block, and the other end of the right-handed screw is inserted into the adjusting knob in a threaded mode. When the upper structure of a bridge is distorted and the support is disengaged, the adjusting knob is rotated, the left-handed screw and the right-handed screw can move inwards, the two adjusting inclined blocks get close to each other and can jack up the movable bottom plate, then the height of the support is increased, in the support maintaining process, constructors do not need to prepare a large number of base plates of different sizes, and the construction cost is reduced. And the support is convenient to maintain and construct.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of bridge construction, and discloses a bridge height-adjusting support. BACKGROUND

[0002] The bridge support is an important structural component for connecting the upper structure and the lower structure of a bridge, is located between the bridge and the cushion stone, and can reliably transmit the load and deformation (displacement and rotation angle) borne by the upper structure of the bridge to the lower structure of the bridge, and is an important force transmission device of the bridge. There are fixed supports and movable supports. The commonly used support forms of bridge engineering include flat plate supports, plate type rubber supports, spherical supports, steel supports and special supports.

[0003] With the rapid development of high-speed railways in China, bridges account for a high proportion in the lines, and steel supports are used more and more. However, the bridge structure will change in settlement under the influence of factors such as temperature, shrinkage and creep and uneven settlement of the foundation, and if no measures are taken, the upper structure of the bridge will be distorted, the support will be empty, and then the comfort and safety of train operation will be affected. The existing support can only be adjusted through cushion plates with different thicknesses, and a large number of point halves with different sizes need to be prepared by construction personnel, which is not convenient for the maintenance and construction of the support. CONTENT OF THE UTILITY MODEL

[0004] In order to facilitate the maintenance and construction of the support, the application provides a bridge height-adjusting support.

[0005] The application provides a bridge height-adjusting support, which adopts the following technical scheme:

[0006] The bridge height-adjusting support comprises an upper support plate, a lower support plate and a height-adjusting assembly, the height-adjusting assembly comprises a movable bottom plate, an adjusting inclined block, a left-handed screw rod, a right-handed screw rod and an adjusting knob, the movable bottom plate is installed below the upper support plate, the bottom surface of the movable bottom plate is provided with symmetrically distributed first inclined surfaces on both sides, the adjusting inclined block is provided with two pieces, the upper surfaces of the two pieces of adjusting inclined blocks are provided with second inclined surfaces matched with the first inclined surfaces, the second inclined surfaces on the two pieces of adjusting inclined blocks are respectively in abutment with the two second inclined surfaces of the movable bottom plate, one end of the left-handed screw rod is fixed to the inner side surface of one piece of adjusting inclined block, the other end of the left-handed screw rod is threadedly inserted into the adjusting knob, one end of the right-handed screw rod is fixed to the inner side surface of the other piece of adjusting inclined block, and the other end of the right-handed screw rod is threadedly inserted into the adjusting knob.

[0007] Through the above technical scheme, when the upper structure of the bridge is distorted and the support is empty, the adjusting knob is rotated, the left-handed screw rod and the right-handed screw rod move inward, the two pieces of adjusting inclined blocks move close to each other, the two pieces of adjusting inclined blocks can lift the movable bottom plate, and then the height of the support is increased. In the process of maintaining the support, the construction personnel do not need to prepare a large number of cushion plates with different sizes, and the maintenance and construction of the support are facilitated.

[0008] Optionally, the upper surface of the lower support plate is fixed with two symmetrical first vertical plates, and the upper surface of each of the two first vertical plates is threadedly connected with a locking bolt, and the locking bolt abuts against the side surface of the adjusting inclined block.

[0009] By adopting the above technical scheme, the adjusting inclined block is constrained and positioned by the locking of the locking bolt, so that the locking effect on the height of the support is achieved, and the safety factor of the support is improved.

[0010] Optionally, the bottom surface of the adjusting inclined block is fixed with a bottom surface stainless steel plate, the bottom surface stainless steel plate is provided as a mirror surface stainless steel plate, the upper surface of the lower support plate is fixed with a bottom surface sliding plate, the bottom surface sliding plate is provided as a modified ultra-high molecular weight polytetrafluoroethylene plate, and the bottom surface stainless steel plate is slidingly connected with the bottom surface sliding plate.

[0011] By adopting the above technical scheme, the friction coefficient of the mirror surface stainless steel and the modified ultra-high molecular weight polytetrafluoroethylene is small, so that the friction force generated when the adjusting inclined block is adjusted is reduced.

[0012] Optionally, a spherical crown lining plate is arranged between the upper support plate and the movable bottom plate, the bottom surface of the spherical crown lining plate is fixed with a spherical surface stainless steel plate, the upper surface of the movable bottom plate is provided with a groove, the groove of the movable bottom plate is fixed with a spherical surface sliding plate, and the spherical surface stainless steel plate is rotationally connected with the spherical surface sliding plate.

[0013] By adopting the above technical scheme, the upper support plate can rotate on the movable bottom plate, the rotation design of the upper support plate is realized, and the deformation of the bridge caused by thermal expansion and contraction and load during passing is met.

[0014] Optionally, the bottom surface of the upper support plate is fixed with a plane stainless steel plate, the upper surface of the spherical crown lining plate is fixed with a plane sliding plate, the bottom surface of the upper support plate is fixed with two symmetrical second vertical plates outside the plane stainless steel plate, the two second vertical plates are fixed with guide stainless steel strips fixed on the inner side surfaces, the outer side surface of the movable bottom plate is fixed with a guide sliding plate, and the longitudinal displacement of the upper support plate is realized through the two sliding surfaces of the plane stainless steel plate and the plane sliding plate and the guide stainless steel strips and the guide sliding plate.

[0015] By adopting the above technical scheme, the longitudinal displacement of the upper support plate is realized through the two sliding surfaces of the plane stainless steel plate and the plane sliding plate and the guide stainless steel strips and the guide sliding plate, so that the deformation of the bridge caused by thermal expansion and contraction and load during passing is met.

[0016] Optionally, a support surrounding plate is arranged outside the upper support plate, the lower support plate and the height adjusting assembly, and the support surrounding plate is fixed on the upper support plate and the lower support plate through bolts.

[0017] By adopting the technical scheme, the surrounding plate of the support can prevent external sundries from entering between the upper support plate and the lower support plate, thereby ensuring the structural cleanliness between the upper support plate and the lower support plate, and improving the service life of the support and the stability of the support.

[0018] Optionally, a sealing groove is formed on the upper surface of the movable bottom plate, and a sealing ring is installed in the sealing groove.

[0019] By adopting the technical scheme, the sealing performance between the movable bottom plate and the spherical crown lining plate is improved.

[0020] To sum up, the present application has at least one of the following beneficial technical effects:

[0021] 1. When the bridge superstructure is twisted and the support is empty, rotating the adjusting knob, the left-hand screw rod and the right-hand screw rod move inward, so that the two adjusting inclined blocks approach each other, the two adjusting inclined blocks can lift the movable bottom plate, and then the height of the support is increased. During the maintenance of the support, the construction personnel do not need to prepare a large number of different size pads, which is convenient for the maintenance and construction of the support;

[0022] 2. The adjusting inclined blocks are constrained and positioned by the locking of the locking bolts, so that the locking effect on the height of the support is achieved, and the safety factor of the support is improved;

[0023] 3. The friction coefficient of the mirror stainless steel and the modified ultra-high molecular weight polytetrafluoroethylene is small, thereby reducing the friction force generated when the adjusting inclined block is adjusted. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 is a structural schematic view of the surrounding plate of the support.

[0025] Figure 2 is a whole structural schematic view of the present application.

[0026] Marked as follows: 1, upper support plate; 2, plane stainless steel plate; 3, guide stainless steel strip; 4, plane sliding plate; 5, sealing ring; 6, spherical crown lining plate; 7, spherical stainless steel plate; 8, spherical sliding plate; 9, movable bottom plate; 10, guide sliding plate; 11, adjusting inclined block; 12, left-hand screw rod; 13, locking bolt; 14, adjusting knob; 15, right-hand screw rod; 16, bottom surface sliding plate; 17, bottom surface stainless steel plate; 18, lower support plate; 19, support surrounding plate. DETAILED DESCRIPTION

[0027] The following will be described in detail in combination with the accompanying drawings. Figures 1-2 The present application will be further described in detail.

[0028] The embodiment of the present application discloses a bridge height-adjusting support. Referring to Figure 1 and Figure 2The bridge height-adjusting support comprises an upper support plate 1, a lower support plate 18, a spherical cap lining plate 6 and a height-adjusting assembly. The spherical cap lining plate 6 is located between the upper support plate 1 and the height-adjusting assembly. The height-adjusting assembly is used for adjusting the height of the spherical cap lining plate 6 and the upper support plate 1. The lower support plate 18 is located below the height-adjusting assembly.

[0029] Referring to Figure 1 and Figure 2 A flat stainless steel plate 2 is fixed to the bottom surface of the upper support plate 1. A flat sliding plate 4 is fixed to the upper surface of the spherical cap lining plate 6. Two second vertical plates symmetrically distributed are fixed to the bottom surface of the upper support plate 1 outside the flat stainless steel plate 2. The two second vertical plates are fixed with guide stainless steel strips 3 fixed to the inner side surfaces thereof. A guide sliding plate 10 is fixed to the outer side surface of a movable bottom plate 9. The upper support plate 1 realizes the longitudinal displacement of the upper support plate 1 through two sliding surfaces of the flat stainless steel plate 2 and the flat sliding plate 4, the guide stainless steel strips 3 and the guide sliding plate 10, so as to satisfy the deformation of the bridge caused by thermal expansion and contraction and load when passing through.

[0030] Referring to Figure 1 and Figure 2 The height-adjusting assembly comprises the movable bottom plate 9, an adjusting inclined block 11, a left-hand screw rod 12, a right-hand screw rod 15 and an adjusting knob 14. The movable bottom plate 9 is located below the spherical cap lining plate 6. A recess is formed in the upper surface of the movable bottom plate 9, and a spherical sliding plate 8 is fixed in the recess of the movable bottom plate 9. The spherical stainless steel plate 7 is rotationally connected to the spherical sliding plate 8. The upper support plate 1 can rotate on the movable bottom plate 9, so as to realize the rotation design of the upper support plate 1, thereby satisfying the deformation of the bridge caused by thermal expansion and contraction and load when passing through.

[0031] Referring to Figure 1 and Figure 2 Symmetrically distributed first inclined surfaces are formed in the bottom surface of the movable bottom plate 9. The adjusting inclined block 11 is provided with two blocks, and the two blocks of the adjusting inclined block 11 are located below the two sides of the movable bottom plate 9. The upper surfaces of the two blocks of the adjusting inclined block 11 are each provided with a second inclined surface matched with the first inclined surface, and the second inclined surfaces of the two blocks of the adjusting inclined block 11 respectively abut against the two second inclined surfaces of the movable bottom plate 9. One end of the left-hand screw rod 12 is fixed to the inner side surface of one block of the adjusting inclined block 11, and the other end of the left-hand screw rod 12 is threadedly inserted into the adjusting knob 14. One end of the right-hand screw rod 15 is fixed to the inner side surface of the other block of the adjusting inclined block 11, and the other end of the right-hand screw rod 15 is threadedly inserted into the adjusting knob 14.

[0032] Referring to Figure 1 and Figure 2When the bridge superstructure twists and the support is empty, rotate the adjusting knob 14, and the left and right threaded rods 12 and 15 will move inward, so that the two adjusting inclined blocks 11 are close to each other, so that the two adjusting inclined blocks 11 can lift the movable bottom plate 9, thereby lifting the support height. During the maintenance of the support, the construction personnel do not need to prepare a large number of different size pads, which is convenient for the maintenance and construction of the support.

[0033] Referring to Figure 1 and Figure 2 The bottom surface of the adjusting inclined block 11 is fixed with a bottom surface stainless steel plate 17. The bottom surface stainless steel plate 17 is a mirror surface stainless steel plate. The upper surface of the lower support plate 18 is fixed with a bottom surface sliding plate 16. The bottom surface sliding plate 16 is a modified ultra-high molecular weight polytetrafluoroethylene plate. The bottom surface stainless steel plate 17 is in sliding connection with the bottom surface sliding plate 16. The mirror surface stainless steel plate and the modified ultra-high molecular weight polytetrafluoroethylene plate have a small friction coefficient, which facilitates the sliding of the adjusting inclined block 11.

[0034] Referring to Figure 1 and Figure 2 The upper surface of the lower support plate 18 is fixed with two symmetrical first vertical plates. The two first vertical plates are both threadedly connected with a locking bolt 13. The locking bolt 13 abuts against the side surface of the adjusting inclined block 11. By locking the locking bolt 13, the adjusting inclined block 11 is constrained and positioned, so as to have a locking effect on the support height, thereby improving the safety factor of the support. The upper support plate 1, the lower support plate 18 and the outside of the height adjusting assembly are provided with a support fence 19. The support fence 19 is fixed on the upper support plate 1 and the lower support plate 18 by bolts. The support fence can prevent external sundries from entering between the upper support plate 1 and the lower support plate 18, thereby ensuring the cleanliness of the structure between the upper support plate 1 and the lower support plate 18, thereby improving the service life of the support and the stability of the support.

[0035] The above are the preferred embodiments of the present application, which do not limit the protection scope of the present application, therefore: any equivalent changes made on the structure, shape, principle of the present application shall be covered within the protection scope of the present application.

Claims

1. A bridge height adjustment bearing, characterized in that: The system includes an upper support plate (1), a lower support plate (18), and a height adjustment assembly. The height adjustment assembly includes a movable base plate (9), an adjusting ramp (11), a left-hand screw (12), a right-hand screw (15), and an adjustment knob (14). The movable base plate (9) is installed below the upper support plate (1). The bottom surface of the movable base plate (9) has symmetrically distributed first ramps on both sides. Two adjusting ramps (11) are provided, and the upper surfaces of the two adjusting ramps (11) have ramps that are symmetrically distributed on both sides. The second inclined surface of the inclined surface is engaged with the second inclined surface of the two adjusting inclined blocks (11), which respectively abut against the two second inclined surfaces of the movable base plate (9). One end of the left-hand screw (12) is fixed to the inner side of one adjusting inclined block (11), and the other end of the left-hand screw (12) is threaded into the adjusting knob (14). One end of the right-hand screw (15) is fixed to the inner side of another adjusting inclined block (11), and the other end of the right-hand screw (15) is threaded into the adjusting knob (14).

2. The bridge height adjustment bearing according to claim 1, characterized in that: The upper surface of the lower support plate (18) is fixed with two symmetrical first upright plates. Both first upright plates are threaded with locking bolts (13), which abut against the side of the adjusting inclined block (11).

3. A bridge height adjustment bearing according to claim 1, characterized in that: The bottom surface of the adjusting inclined block (11) is fixed with a bottom stainless steel plate (17), which is a mirror stainless steel plate. The upper surface of the lower support plate (18) is fixed with a bottom sliding plate (16), which is a modified ultra-high molecular weight polytetrafluoroethylene plate. The bottom stainless steel plate (17) and the bottom sliding plate (16) are slidably connected.

4. A bridge height adjustment bearing according to claim 1, characterized in that: A spherical crown liner (6) is provided between the upper support plate (1) and the movable base plate (9). A spherical stainless steel plate (7) is fixed on the bottom surface of the spherical crown liner (6). A groove is provided on the upper surface of the movable base plate (9). A spherical sliding plate (8) is fixed in the groove of the movable base plate (9). The spherical stainless steel plate (7) is rotatably connected to the spherical sliding plate (8).

5. A bridge height adjustment bearing according to claim 4, characterized in that: The bottom surface of the upper support plate (1) is fixed with a flat stainless steel plate (2), the upper surface of the spherical crown liner (6) is fixed with a flat sliding plate (4), the bottom surface of the upper support plate (1) is fixed with two symmetrically distributed second upright plates on the outside of the flat stainless steel plate (2), the inner sides of the two second upright plates are fixed with guide stainless steel strips (3), the outer side of the movable base plate (9) is fixed with a guide sliding plate (10), the upper support plate (1) achieves longitudinal displacement of the upper support plate (1) through the two sliding surfaces of the flat stainless steel plate (2) and the flat sliding plate (4), the guide stainless steel strips (3) and the guide sliding plate (10).

6. A bridge height adjustment bearing according to claim 1, characterized in that: The upper support plate (1), the lower support plate (18) and the height adjustment component are provided with support enclosure plates (19), which are fixed to the upper support plate (1) and the lower support plate (18) by bolts.

7. A bridge height adjustment bearing according to claim 1, characterized in that: A sealing groove is provided on the upper surface of the movable base plate (9), and a sealing ring (5) is installed in the sealing groove.

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