Swivel spherical hinge with double-sliding-surface revolute pair

Abstract

The invention belongs to the technical field of bridge swivel spherical hinges, and particularly relates to a swivel spherical hinge with a double-sliding-surface revolute pair, which comprises an upper spherical hinge, a lower spherical hinge and a revolute pair positioned between the upper spherical hinge and the lower spherical hinge, the rotating pair comprises a middle friction piece and upper and lower friction pieces located on the upper and lower sides of the middle friction piece, the two upper and lower friction pieces are fixedly connected to an upper spherical seat plate of the upper spherical hinge and a lower spherical seat plate of the lower spherical hinge respectively, and the middle friction piece and the two upper and lower friction pieces can slide relative to each other. A sliding surface is formed between the upper vertical friction piece and the middle friction piece, and another sliding surface is formed between the lower vertical friction piece and the middle friction piece; holes are formed in the middles of the upper friction piece and the lower friction piece, steel casings are arranged, one ends of the steel casings are fixedly connected with the holes of the upper friction piece and the lower friction piece, the other ends of the steel casings are fixedly connected with steel casing cover plates, and bolts are arranged in a space defined by the steel casings fixedly connected with the upper friction piece and the lower friction piece. According to the invention, two sliding surfaces are designed, and when one sliding surface is blocked, the other sliding surface can work normally.

Description

Technical Field

[0001] The present invention belongs to the technical field of bridge rotating ball hinges, and specifically relates to a rotating ball hinge with a double-sliding surface rotating pair. Background Art

[0002] With the development of the transportation industry, the construction of highways and railways has achieved rapid growth. By 2023, the national railway operating mileage reached 152,500 kilometers, of which the high-speed railway reached 41,000 kilometers. When constructing bridges across railways, the rotating construction method is generally adopted; and the rotating ball hinge is a key component among them, so the usage of rotating ball hinges is increasing.

[0003] In recent years, there have been several cases of "unable to rotate" in the rotating construction. Analyzing the reasons, it may be that sundries have entered the sliding surface, or it may be a problem with the structure itself, or it may be insufficient strength of the reaction seat, etc. The root cause is that the friction force is too large.

[0004] The traditional rotating ball hinge has only one sliding surface. When there is a "problem" with this sliding surface, it will cause the phenomenon of being unable to rotate. Summary of the Invention

[0005] Aiming at the above problems existing in the traditional rotating ball hinge due to only having one sliding surface, the purpose of the present invention is to provide a rotating ball hinge with a double-sliding surface rotating pair.

[0006] The purpose of the present invention is achieved through the following technical solutions:

[0007] The present invention includes an upper ball hinge, a lower ball hinge and a rotating pair. The upper ball hinge is installed on the upper bearing platform, the lower ball hinge is installed on the base, and the rotating pair is located between the upper ball hinge and the lower ball hinge; the rotating pair includes an intermediate friction member and two upper and lower friction members located on the upper and lower sides of the intermediate friction member. The upper and lower friction member located above is fixedly connected to the upper spherical surface seat plate of the upper ball hinge, and the upper and lower friction member located below is fixedly connected to the lower spherical surface seat plate of the lower ball hinge. The intermediate friction member can slide relative to the two upper and lower friction members. One sliding surface is formed between the upper and lower friction member located above and the intermediate friction member, and another sliding surface is formed between the upper and lower friction member located below and the intermediate friction member; an opening is provided in the middle of the upper and lower friction members, and a steel casing is provided. One end of the steel casing is fixedly connected to the opening of the upper and lower friction members, and a steel casing cover plate is fixedly connected to the other end of the steel casing. A pin is arranged in the space enclosed by the steel casings fixedly connected by the two upper and lower friction members.

[0008] Wherein: the upper and lower friction members are stainless steel plates, the intermediate friction member is a sliding plate, and the stainless steel plates are welded to the upper spherical surface seat plate of the upper ball hinge or the lower spherical surface seat plate of the lower ball hinge.

[0009] The upper and lower friction members are sliding plates, the middle friction member is a stainless steel plate, and the sliding plate is embedded in the upper spherical seat plate of the upper spherical hinge or the lower spherical seat plate of the lower spherical hinge.

[0010] The stainless steel plate is composed of multiple concentric rings, each ring being a complete ring, and adjacent rings are connected by connecting blocks; one end of the steel casing is welded to the inner ring of the innermost ring.

[0011] The sliding plate is composed of multiple concentric rings, each ring being divided into multiple blocks, and adjacent blocks of each ring are connected by connecting plates, and the connecting plates on adjacent rings are connected to each other.

[0012] Multiple groups of connecting plates are evenly distributed along the circumferential direction on the sliding plate. Each group of connecting plates is formed by connecting the connecting plates between adjacent blocks on each concentric ring in the radial direction, that is, the number of blocks divided for each concentric ring is the same, and each group of connecting plates passes through the center of the sliding plate.

[0013] Both the stainless steel plate and the sliding plate are spherical panels, and the contact between the stainless steel plate and the sliding plate is a surface contact.

[0014] The contact surface between the stainless steel plate and the sliding plate is nickel-plated, chromium-plated or polished.

[0015] The lower spherical hinge and the base are connected by multiple height adjustment devices evenly arranged along the circumferential direction.

[0016] The advantages and positive effects of the present invention are:

[0017] The rotating spherical hinge of the present invention is designed with two sliding surfaces. When one sliding surface is "jammed", the other sliding surface can still work normally; the rubbing surfaces of the stainless steel plate and the sliding plate are composed of materials with low friction coefficients, and the friction coefficient is lower than that of the single-sliding surface structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural diagram of Embodiment 1 of the present invention;

[0019] Figure 2 is Figure 1 a partial enlarged view of A in

[0020] Figure 3 is a schematic structural diagram of Embodiment 2 of the present invention;

[0021] Figure 4 is Figure 3 a partial enlarged view of B in

[0022] Figure 5 is a three-dimensional structural schematic diagram of the rotating pair of the present invention;

[0023] Figure 6 is a three-dimensional structural schematic diagram of the sliding plate of the present invention;

[0024] Wherein: 1 is a stainless steel plate, 2 is a sliding plate, 3 is an upper spherical hinge, 4 is a lower spherical hinge, 5 is a connecting block, 6 is a connecting plate, 7 is a steel casing, 8 is a steel casing cover plate, 9 is a height adjustment device, 10 is a base, 11 is a bolt, and 12 is a rotating pair. Specific implementation mode

[0025] The present invention will be further described in detail below with reference to the accompanying drawings.

[0026] Embodiment 1

[0027] As Figure 1 、 Figure 2 shown, this embodiment includes an upper spherical hinge 3, a lower spherical hinge 4 and a rotating pair 12. The upper spherical hinge 3 is installed on the upper bearing platform, the lower spherical hinge 4 is installed on the base 10, and the rotating pair 12 is located between the upper spherical hinge 3 and the lower spherical hinge 4; the rotating pair 12 includes an intermediate friction member and two upper and lower friction members located on the upper and lower sides of the intermediate friction member. The upper and lower friction member located above is fixedly connected to the upper spherical surface seat plate of the upper spherical hinge 3, and the upper and lower friction member located below is fixedly connected to the lower spherical surface seat plate of the lower spherical hinge 4. The intermediate friction member can slide relative to the two upper and lower friction members. An upper sliding surface is formed between the upper and lower friction member located above and the intermediate friction member, and another sliding surface is formed between the upper and lower friction member located below and the intermediate friction member; the upper and lower friction members are provided with openings in the middle, and a steel casing 7 is provided. One end of the steel casing 7 is fixedly connected to the opening of the upper and lower friction members, and the other end of the steel casing 7 is fixedly connected with a steel casing cover plate 8. A bolt 11 is arranged in the space surrounded by the steel casings 7 fixedly connected by the two upper and lower friction members.

[0028] In this embodiment, the upper and lower friction members are stainless steel plates 1, the intermediate friction member is a sliding plate 2, the two stainless steel plates 1 are welded to the upper spherical surface seat plate of the upper spherical hinge 3 and the lower spherical surface seat plate of the lower spherical hinge 4. The sliding plate 2 is located between the upper and lower stainless steel plates 1 and can slide relative to both the upper and lower stainless steel plates 1. The sliding plate 2 can rotate around the center of the spherical hinge; an upper sliding surface is formed between the upper stainless steel plate 1 and the upper surface of the sliding plate 2, and another sliding surface is formed between the lower stainless steel plate 1 and the lower surface of the sliding plate 2.

[0029] As Figure 5 、 Figure 6As shown in the figure, the stainless steel plate 1 and the sliding plate 2 in this embodiment are both spherical panels concave downward, and there is a surface contact between the stainless steel plate 1 and the sliding plate 2; the stainless steel plate 1 is composed of multiple concentric rings, each ring is a complete ring, and adjacent rings are connected by connecting blocks 5, and the material of the connecting blocks 5 is stainless steel; one end of the steel casing 7 is welded to the inner ring of the innermost ring. The material of the sliding plate 2 can be polytetrafluoroethylene. The sliding plate 2 is composed of multiple concentric rings, each ring is divided into multiple pieces, and adjacent pieces of each ring are connected by connecting plates 6. The connecting plates 6 on adjacent rings are connected to each other. The material of the connecting plates 6 can be stainless steel, and the connecting plates 6 and the sliding plate 2 are bonded with an adhesive. The adhesive in this embodiment can be 502 glue.

[0030] Multiple groups of connecting plates 6 are evenly distributed along the circumferential direction on the sliding plate 2. Each group of connecting plates 6 is formed by connecting the connecting plates 6 between adjacent pieces on each concentric ring along the radial direction, that is, the number of pieces divided by each concentric ring is the same, and each group of connecting plates 6 passes through the center of the sliding plate 2. In this embodiment, seven groups of connecting plates 6 are evenly distributed along the circumferential direction on the sliding plate 2, so that each concentric ring is evenly divided into eight pieces.

[0031] The stainless steel plate 1 in this embodiment is a mirror stainless steel plate, that is, the contact surface between the stainless steel plate 1 and the sliding plate 2 is nickel-plated, chrome-plated or polished.

[0032] In this embodiment, the lower spherical hinge 4 and the base 10 are connected by a plurality of height adjustment devices 9 evenly arranged along the circumferential direction, and each height adjustment device 9 is used to adjust the horizontal position of the lower spherical hinge 3; the height adjustment device 9 in this embodiment is a prior art and will not be elaborated here.

[0033] Embodiment Two

[0034] As Figure 3 、 Figure 4 shown, the difference between this embodiment and Embodiment One is that the upper and lower friction parts in this embodiment are the sliding plates 2, and the middle friction part is the stainless steel plate 1. The two sliding plates 2 are embedded in the upper spherical seat plate of the upper spherical hinge 3 and the lower spherical seat plate of the lower spherical hinge 4. The stainless steel plate 1 is located between the upper and lower sliding plates 2 and can slide relative to both the upper and lower sliding plates 2. The stainless steel plate 1 can rotate around the center of the spherical hinge; a sliding surface is formed between the upper sliding plate 2 and the upper surface of the stainless steel plate 1, and another sliding surface is formed between the lower sliding plate 2 and the lower surface of the stainless steel plate 1.

[0035] The stainless steel plate 1 and the sliding plate 2 in this embodiment are the same as those in Embodiment One.

[0036] The present invention is provided with two sliding surfaces, that is, a rotating body spherical hinge has two sliding surfaces. Even when one sliding surface is "stuck", the other sliding surface can still work normally. Moreover, the rubbing surface is composed of materials with a low friction coefficient (such as mirror stainless steel and polytetrafluoroethylene), and the friction coefficient ≤ 0.03, which is lower than that of the single sliding surface structure.

Claims

1. A rotating ball hinge with a double-sliding surface rotating pair, comprising an upper ball hinge (3), a lower ball hinge (4) and a rotating pair (12). The upper ball hinge (3) is installed on an upper bearing platform, the lower ball hinge (4) is installed on a base (10), and the rotating pair (12) is located between the upper ball hinge (3) and the lower ball hinge (4); it is characterized in that: The rotating pair (12) includes an intermediate friction member and two upper and lower friction members located on the upper and lower sides of the intermediate friction member. The upper and lower friction member located above is fixedly connected to the upper spherical seat plate of the upper ball joint (3), and the upper and lower friction member located below is fixedly connected to the lower spherical seat plate of the lower ball joint (4). The intermediate friction member can slide relative to the two upper and lower friction members. A sliding surface is formed between the upper and lower friction member located above and the intermediate friction member, and another sliding surface is formed between the upper and lower friction member located below and the intermediate friction member; The middle of the upper and lower friction members is provided with an opening, and a steel casing (7) is provided. One end of the steel casing (7) is fixedly connected to the opening of the upper and lower friction members, and a steel casing cover plate (8) is fixedly connected to the other end of the steel casing (7). A pin (11) is arranged in the space surrounded by the steel casings (7) fixedly connected by the two upper and lower friction members.

2. The rotating ball hinge with a double-sliding surface rotating pair according to claim 1, characterized in that: The upper and lower friction members are stainless steel plates (1), the intermediate friction member is a sliding plate (2), and the stainless steel plate (1) is welded to the upper spherical seat plate of the upper ball joint (3) or the lower spherical seat plate of the lower ball joint (4).

3. The rotating ball hinge with double sliding surface rotating pairs according to claim 1, characterized in that: The upper and lower friction members are sliding plates (2), the intermediate friction member is a stainless steel plate (1), and the sliding plate (2) is embedded in the upper spherical seat plate of the upper ball joint (3) or the lower spherical seat plate of the lower ball joint (4).

4. The swivel spherical hinge with double sliding surface rotating pair according to claim 2 or 3, characterized in that: The stainless steel plate (1) is composed of multiple concentric rings, each ring is a complete ring, and adjacent rings are connected by connecting blocks (5); One end of the steel casing (7) is welded to the inner ring of the innermost ring.

5. The rotating ball hinge with a double-sliding surface rotating pair according to claim 2 or 3, characterized in that: The sliding plate (2) is composed of multiple concentric rings, each ring is divided into multiple pieces, and adjacent pieces of each ring are connected by connecting plates (6), and the connecting plates (6) on adjacent rings are connected to each other.

6. The rotating ball hinge with a double-sliding surface rotating pair according to claim 5, characterized in that: A plurality of groups of connecting plates (6) are evenly distributed along the circumferential direction on the sliding plate (2). Each group of connecting plates (6) is formed by connecting the connecting plates (6) between adjacent pieces on each concentric ring along the radial direction, that is, the number of pieces divided by each concentric ring is the same, and each group of connecting plates (6) passes through the center of the sliding plate (2).

7. The rotating ball hinge with a double-sliding surface rotating pair according to claim 2 or 3, characterized in that: Both the stainless steel plate (1) and the sliding plate (2) are spherical panels, and the stainless steel plate (1) and the sliding plate (2) are in surface contact.

8. The swivel ball hinge with a double-sliding surface rotating pair according to claim 2 or 3, characterized in that: The contact surface between the stainless steel plate (1) and the sliding plate (2) is nickel-plated, chromium-plated or polished.

9. The rotating ball hinge with double sliding surface rotating pairs according to claim 1, characterized in that: The lower ball joint (4) and the base (10) are connected by a plurality of height adjustment devices (9) evenly arranged along the circumferential direction.

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