Cylindrical surface support

Abstract

The utility model discloses a cylindrical surface support which comprises an upper seat plate, a plane stainless steel sliding plate, a lower seat plate, a middle seat plate, a plane sliding plate, a cylindrical surface stainless steel sliding plate and a cylindrical surface sliding plate, and the plane stainless steel sliding plate is fixed on the lower surface of the upper seat plate; the upper surface of the lower seat plate is a concave cylindrical surface; the lower surface of the middle seat plate is a convex cylindrical surface matched with the concave cylindrical surface; the plane sliding plate is fixed to the upper surface of the middle base plate and abuts against the plane stainless steel sliding plate to form a plane sliding friction pair. The cylindrical surface stainless steel sliding plate is fixed on the convex cylindrical surface; the cylindrical sliding plate is fixed to the concave cylindrical surface and abuts against the cylindrical stainless steel sliding plate to form a rotating friction pair. The cylindrical surface support with the overturn-preventing and beam-falling-preventing functions adopts a plane and rotating friction pair structure, can flexibly rotate in the radial direction of the cylindrical surface, realizes the rotation of a bridge in the longitudinal direction of the bridge, cannot rotate in the axial direction of the cylindrical surface, prevents a beam body from rotating in the transverse direction of the bridge to cause an overturn beam-falling accident, and improves the safety of the bridge. The technical problem of design of different base plate type height-adjusting supports is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge supports, and more specifically to a cylindrical support. Background Art

[0002] Railway passenger and freight simply supported T-beams are small in size, light in weight, and flexible in erection methods. They do not require specialized large-scale transportation equipment and beam erection equipment, and are widely used in passenger and freight co-line railways. At present, the commonly used bearings for simply supported passenger and freight T-beams are railway simply supported beam spherical bearings, pot-type rubber bearings, and cylindrical bearings. Pot-type rubber bearings are prone to rubber aging and cannot have the same service life as bridges; spherical bearings are flexible in rotating in all directions, and the beam is easy to flip during the erection of the bridge, resulting in beam falling accidents; cylindrical bearings can prevent the bridge from rotating horizontally, which can solve the problem of beam falling, but existing cylindrical bearings have problems such as complex structure, easy contamination of friction pairs, and low service life.

[0003] Therefore, how to provide a cylindrical bearing with anti-overturning and anti-beam falling functions to realize the longitudinal rotation of the bridge and limit the transverse rotation of the bridge, and limit abnormal displacement, is a problem that technical personnel in this field urgently need to solve. Utility Model Content

[0004] In view of this, the utility model provides

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A cylindrical support, comprising:

[0007] Upper seat plate,

[0008] A flat stainless steel slide plate, wherein the flat stainless steel slide plate is fixed to the lower surface of the upper seat plate;

[0009] A lower seat plate, the lower seat plate and the upper seat plate are arranged symmetrically up and down, and the upper surface of the lower seat plate is a concave cylindrical surface;

[0010] A middle seat plate, the lower surface of which is a convex cylindrical surface matching the concave cylindrical surface; the middle seat plate is embedded between the plate surfaces opposite to the upper seat plate and the lower seat plate;

[0011] A plane slide plate, the plane slide plate is fixed on the upper surface of the middle seat plate and abuts against the plane stainless steel slide plate to form a plane sliding friction pair;

[0012] A cylindrical stainless steel slide plate, wherein the cylindrical stainless steel slide plate is fixed on the convex cylindrical surface;

[0013] A cylindrical slide plate is fixed on the concave cylindrical surface and abuts against the cylindrical stainless steel slide plate to form a rotating friction pair.

[0014] The beneficial effect of the above technical solution is that a plane sliding friction pair is formed between the upper seat plate and the middle seat plate, which can realize the plane sliding of the support. The plate surfaces opposite to the middle seat plate and the lower seat plate are cylindrical contact surfaces, forming a rotating friction pair, which can be flexibly rotated along the radial direction of the cylindrical surface to realize the longitudinal rotation of the bridge, and cannot rotate in the axial direction of the cylinder, thereby preventing the beam body from rotating in the transverse direction of the bridge and causing the beam to flip over and fall off.

[0015] Preferably, lower limit plates are fixed at both ends of the upper surface of the lower seat plate in the transverse bridge direction, the bottom end of the middle seat plate is located between the two lower limit plates, the two lower limit plates are fixed with lower guide stainless steel slide plates on the side walls facing the middle seat plate, and the middle seat plate is fixed with lower guide slide plates on the side walls facing the lower limit plates, and the lower guide slide plates are abutted against the lower guide stainless steel slide plates to form a lower guide friction pair. The lower guide friction pair can realize the rotation function of the support.

[0016] Preferably, upper limit plates are fixed at both ends of the lower surface of the upper seat plate in the transverse bridge direction, the top of the middle seat plate is located between the two upper limit plates, the two upper limit plates are fixed with upper guide stainless steel slide plates on the side walls facing the middle seat plate, the middle seat plate is fixed with upper guide slide plates on the side walls facing the upper limit plates, and the upper guide slide plates are abutted against the upper guide stainless steel slide plates to form an upper guide friction pair. The upper guide friction pair enables the beam body to slide along the upper limit plates in the active direction, and plays a role in limiting and preventing the beam from falling in the inactive direction.

[0017] Preferably, a sealing strip is provided on the peripheral side of the planar slide plate to seal the planar friction pair, prevent dust from entering, and increase the service life of the planar friction pair.

[0018] Preferably, the sealing strips are provided on both sides of the cylindrical slide in the transverse bridge direction, and U-shaped sealing seats are fixed on the upper surfaces of both sides of the lower seat plate in the longitudinal bridge direction relative to the cylindrical slide, and cylindrical sealing strips are embedded in the U-shaped grooves of the sealing seats. The sealing strips and the cylindrical sealing strips can form a curved surface sealing structure adapted to the cylindrical curved surface, which can effectively prevent dust from entering the cylindrical friction pair, thereby ensuring the service life of the bearing cylindrical friction pair.

[0019] Preferably, the cylindrical surface support includes a longitudinal movable support, a multi-directional movable support, a transverse movable support and a fixed support. According to the stress conditions of the beam body, different types of cylindrical surface supports can be selected.

[0020] Preferably, a steel plate is provided on the upper surface of the upper seat plate, the steel plate is embedded in the bottom of the beam end, and the steel plate and the upper seat plate are fastened by bolts. The steel plate is embedded in the bottom surface of the beam end of the beam body, and the upper seat plate and the steel plate are fastened by bolts, so that the beam body and the cylindrical support are connected to form an integral structure.

[0021] Preferably, the cross section of the lower seat plate is convex, and an anchor is fixed to the convex side of the lower seat plate. The anchor is anchored to the pier top support pad stone to ensure the installation of the cylindrical support.

[0022] It can be seen from the above technical solutions that, compared with the prior art, the utility model discloses a cylindrical support having the following beneficial effects:

[0023] 1) The cylindrical support with anti-overturning and anti-falling beam functions adopts a plane and rotation friction pair structure. It can rotate flexibly in the radial direction of the cylinder to realize the longitudinal rotation of the bridge, and cannot rotate in the axial direction of the cylinder to prevent the beam from rotating in the transverse direction and causing the beam to flip and fall;

[0024] 2) The lateral limit plate of the support limits the abnormal displacement movement of the beam body, preventing the beam body from excessively moving and falling under abnormal conditions or earthquake conditions, thus playing the role of preventing the beam from falling;

[0025] 3) Sealing strips are provided around the plane friction pair of the bearing, and cylindrical sealing strips are provided around the cylindrical friction pair. After the sealing strips are assembled, a curved sealing structure adapted to the cylindrical curved surface is formed, which can effectively prevent dust from entering the friction pair, thereby ensuring the service life of the bearing friction pair;

[0026] 4) The utility model solves the technical difficulties in designing different pad-type height-adjustable supports, meets the size requirements of the beam and support installation interface, and the same support can meet the design requirements of bridges in all settlement areas. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0028] Figure 1 A schematic diagram of the longitudinal bridge plane of the multi-directional movable support provided by the utility model;

[0029] Figure 2 for Figure 1 A magnified schematic diagram of part A in FIG.

[0030] Figure 3 for Figure 1 A magnified schematic diagram of part B in FIG.

[0031] Figure 4 A schematic diagram of a transverse bridge plane of a multi-directional movable support provided by the utility model;

[0032] Figure 5 Figure 4 The enlarged schematic diagram of the C part in FIG.

[0033] Figure 6 A schematic diagram of the longitudinal bridge plane of the longitudinal movable support provided by the utility model;

[0034] Figure 7 A schematic diagram of a transverse bridge plane of a longitudinal movable support provided by the utility model;

[0035] Figure 8 for Figure 7 An enlarged schematic diagram of the D portion in FIG.

[0036] Fig. 9 A schematic diagram of the longitudinal bridge plane of the transverse movable support provided by the utility model;

[0037] Fig.10 A schematic diagram of a transverse bridge plane of a transverse movable support provided by the utility model;

[0038] Fig.11 A schematic diagram of the longitudinal bridge plane of the fixed support provided by the utility model;

[0039] Fig.12 This is a schematic diagram of the transverse bridge plane of the fixed support provided by the utility model.

[0040] in,

[0041] 1-upper seat plate; 2-middle seat plate; 3-lower seat plate; 4-flat stainless steel slide plate; 5-flat slide plate; 6-cylindrical stainless steel slide plate; 7-cylindrical slide plate; 8-sealing seat; 9-cylindrical sealing strip; 10-sealing strip; 11-lower guide stainless steel slide plate; 12-lower guide slide plate; 13-upper guide stainless steel slide plate; 14-upper guide slide plate; 15-steel plate; 16-anchoring piece. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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.

[0043] Embodiment 1:

[0044] See attached Figures 1 to 5 The utility model discloses a cylindrical support with anti-overturning and anti-beam-falling functions, including:

[0045] Upper seat plate 1,

[0046] A flat stainless steel slide plate 4, which is fixed to the lower surface of the upper seat plate 1;

[0047] A lower seat plate 3, which is symmetrically arranged with the upper seat plate 1 in the vertical direction, and the upper surface of the lower seat plate 3 is a concave cylindrical surface;

[0048] The middle seat plate 2, the lower surface of which is a convex cylindrical surface matching the concave cylindrical surface; the middle seat plate 2 is embedded between the opposite plate surfaces of the upper seat plate 1 and the lower seat plate 3;

[0049] A plane slide plate 5, which is fixed on the upper surface of the middle seat plate 2 and abuts against the plane stainless steel slide plate 4 to form a plane sliding friction pair;

[0050] A cylindrical stainless steel slide plate 6, wherein the cylindrical stainless steel slide plate 6 is fixed on the convex cylindrical surface;

[0051] The cylindrical slide plate 7 is fixed on the concave cylindrical surface and abuts against the cylindrical stainless steel slide plate 6 to form a rotational friction pair.

[0052] It should be noted that the friction pair is the most important component of the end face seal. The working of this component is the relative sliding of two parts. It is a friction body composed of friction generated by two objects in contact, including sliding friction, rolling friction, dynamic friction, static friction, internal friction, external friction and other forms.

[0053] Cylindrical bearings are divided into longitudinal movable bearings, multi-directional movable bearings, transverse movable bearings and fixed bearings according to their movement modes. This embodiment is explained using multi-directional movable bearings.

[0054] In order to further optimize the above technical solution, the cross section of the lower seat plate 3 is convex, and an anchor 16 is fixed to the convex peripheral side of the lower seat plate 3. The lower seat plate is anchored to the pier top support pad stone to complete the installation of the cylindrical support.

[0055] In order to further optimize the above technical solution, a steel plate 15 is provided on the upper surface of the upper seat plate 1, and the steel plate 15 is pre-embedded at the bottom of the beam end, and the steel plate 15 is fastened to the upper seat plate 1 by bolts. The upper seat plate is connected to the beam body through the pre-embedded steel plate at the bottom of the beam end, and the beam body and the cylindrical support are connected into an integral structure by bolts.

[0056] In this embodiment, upper limit plates are fixed at both ends of the lower surface of the upper seat plate in the transverse bridge direction, and upper limit plates are fixed at both ends of the upper surface of the lower seat plate in the transverse bridge direction. The top end of the middle seat plate is located between the two upper limit plates, and the bottom end is located between the two lower limit plates. The middle seat plate is embedded between the upper seat plate and the lower seat plate by using the upper and lower limit plates. At the same time, the upper and lower limit plates can also limit the lateral displacement of the middle seat plate.

[0057] In order to further optimize the above technical solution, lower limit plates are fixed at both ends of the upper surface of the lower seat plate 3 in the transverse bridge direction, the bottom end of the middle seat plate 2 is located between the two lower limit plates, the two lower limit plates are fixed with lower guide stainless steel slide plates 11 on the side walls facing the middle seat plate 2, and the middle seat plate 2 is fixed with lower guide slide plates 12 on the side walls facing the lower limit plates, and the lower guide slide plates 12 abut against the lower guide stainless steel slide plates 11 to form a lower guide friction pair. The lower guide friction pair is used to realize the rotation performance of the middle seat plate relative to the lower seat plate.

[0058] In order to further optimize the above technical solution, improve the sealing performance of the planar friction pair, and prevent dust from entering and affecting the sliding effect of the planar friction pair, a sealing strip 10 is provided on the circumferential side of the planar slide plate 5 .

[0059] In order to further optimize the above technical scheme, improve the sealing performance of the rotating friction pair, and prevent dust from entering and affecting the rotation effect of the rotating friction pair, sealing strips 10 are provided on both sides of the cylindrical slide plate 7 in the transverse bridge direction, and U-shaped sealing seats 8 are fixed on the upper surfaces of both sides of the lower seat plate 3 in the longitudinal bridge direction relative to the cylindrical slide plate 7, and a cylindrical sealing strip 9 is embedded in the U-shaped groove of the sealing seat 8.

[0060] Embodiment 2:

[0061] See attached Figures 6 to 8 The utility model provides a longitudinal movable cylindrical support, comprising:

[0062] Upper seat plate 1,

[0063] A flat stainless steel slide plate 4, which is fixed to the lower surface of the upper seat plate 1;

[0064] A lower seat plate 3, which is symmetrically arranged with the upper seat plate 1 in the vertical direction, and the upper surface of the lower seat plate 3 is a concave cylindrical surface;

[0065] The middle seat plate 2, the lower surface of which is a convex cylindrical surface matching the concave cylindrical surface; the middle seat plate 2 is embedded between the opposite plate surfaces of the upper seat plate 1 and the lower seat plate 3;

[0066] A plane slide plate 5, which is fixed on the upper surface of the middle seat plate 2 and abuts against the plane stainless steel slide plate 4 to form a plane sliding friction pair;

[0067] A cylindrical stainless steel slide plate 6, wherein the cylindrical stainless steel slide plate 6 is fixed on the convex cylindrical surface;

[0068] The cylindrical slide plate 7 is fixed on the concave cylindrical surface and abuts against the cylindrical stainless steel slide plate 6 to form a rotational friction pair.

[0069] In order to further optimize the above technical solution, the cross section of the lower seat plate 3 is convex, and an anchor 16 is fixed to the convex peripheral side of the lower seat plate 3. The lower seat plate is anchored to the pier top support pad stone to complete the installation of the cylindrical support.

[0070] In order to further optimize the above technical solution, a steel plate 15 is provided on the upper surface of the upper seat plate 1, and the steel plate 15 is pre-embedded at the bottom of the beam end, and the steel plate 15 is fastened to the upper seat plate 1 by bolts. The upper seat plate is connected to the beam body through the pre-embedded steel plate at the bottom of the beam end, and the beam body and the cylindrical support are connected into an integral structure by bolts.

[0071] In order to further optimize the above technical solution, lower limit plates are fixed at both ends of the upper surface of the lower seat plate 3 in the transverse bridge direction, the bottom end of the middle seat plate 2 is located between the two lower limit plates, and lower guide stainless steel slide plates 11 are fixed on the side walls of the two lower limit plates facing the middle seat plate 2, and lower guide slide plates 12 are fixed on the side walls of the middle seat plate 2 facing the lower limit plates, and the lower guide slide plates 12 abut against the lower guide stainless steel slide plates 11 to form a lower guide friction pair.

[0072] In this embodiment, upper limit plates are fixed at both ends of the lower surface of the upper seat plate 1 in the transverse bridge direction, the top of the middle seat plate 2 is located between the two upper limit plates, and upper guide stainless steel slide plates 13 are fixed to the side walls of the two upper limit plates facing the middle seat plate 2, and upper guide slide plates 14 are fixed to the side walls of the middle seat plate 2 facing the upper limit plates, and the upper guide slide plates 14 abut against the upper guide stainless steel slide plates 13 to form an upper guide friction pair.

[0073] The upper guide friction pair is utilized to enable the beam body to slide along the upper guide friction pair in the movable direction, and to limit and prevent the beam from falling in the non-movable direction.

[0074] In order to further optimize the above technical solution, improve the sealing performance of the planar friction pair, and prevent dust from entering and affecting the sliding effect of the planar friction pair, a sealing strip 10 is provided on the circumferential side of the planar slide plate 5 .

[0075] In order to further optimize the above technical scheme, improve the sealing performance of the rotating friction pair, and prevent dust from entering and affecting the rotation effect of the rotating friction pair, sealing strips 10 are provided on both sides of the cylindrical slide plate 7 in the transverse bridge direction, and U-shaped sealing seats 8 are fixed on the upper surfaces of both sides of the lower seat plate 3 in the longitudinal bridge direction relative to the cylindrical slide plate 7, and a cylindrical sealing strip 9 is embedded in the U-shaped groove of the sealing seat 8.

[0076] Embodiment 3:

[0077] See attached Figures 9-10 The utility model discloses a movable cylindrical support, which is different from the first embodiment in that the middle seat plate is cancelled, and upper limit plates are provided at both ends of the bottom surface of the upper seat plate in the transverse direction, and the top of the lower seat plate protrusion penetrates into the space between the two upper limit plates.

[0078] The lower surface of the upper seat plate is a convex cylindrical surface, and the upper surface of the lower seat plate is a concave cylindrical surface matching the convex cylindrical surface. A cylindrical stainless steel slide plate is fixed on the convex cylindrical surface, and a cylindrical slide plate is fixed on the concave cylindrical surface. The cylindrical slide plate and the cylindrical stainless steel slide are in sliding contact with each other to form a rotating friction pair to realize the rotation function of the support.

[0079] In order to further optimize the above technical solution, the cross section of the lower seat plate 3 is convex, and an anchor 16 is fixed to the convex peripheral side of the lower seat plate 3. The lower seat plate is anchored to the pier top support pad stone to complete the installation of the cylindrical support.

[0080] In order to further optimize the above technical solution, a steel plate 15 is provided on the upper surface of the upper seat plate 1, and the steel plate 15 is pre-embedded at the bottom of the beam end, and the steel plate 15 is fastened to the upper seat plate 1 by bolts. The upper seat plate is connected to the beam body through the pre-embedded steel plate at the bottom of the beam end, and the beam body and the cylindrical support are connected into an integral structure by bolts.

[0081] In order to further optimize the above technical scheme, improve the sealing performance of the rotating friction pair, and prevent dust from entering and affecting the rotation effect of the rotating friction pair, sealing strips 10 are provided on both sides of the cylindrical slide plate 7 in the transverse bridge direction, and U-shaped sealing seats 8 are fixed on the upper surfaces of both sides of the lower seat plate 3 in the longitudinal bridge direction relative to the cylindrical slide plate 7, and a cylindrical sealing strip 9 is embedded in the U-shaped groove of the sealing seat 8.

[0082] Embodiment 4:

[0083] See attached Figures 11-12 The utility model embodiment discloses a fixed cylindrical support, which is the same as the embodiment 3, except that the middle seat plate is eliminated.

[0084] The lower surface of the upper seat plate is a convex cylindrical surface, and the upper surface of the lower seat plate is a concave cylindrical surface matching the convex cylindrical surface. A cylindrical stainless steel slide plate is fixed on the convex cylindrical surface, and a cylindrical slide plate is fixed on the concave cylindrical surface. The cylindrical slide plate and the cylindrical stainless steel slide are in sliding contact with each other to form a rotating friction pair to realize the rotation function of the support.

[0085] In order to further optimize the above technical solution, the cross section of the lower seat plate 3 is convex, and an anchor 16 is fixed to the convex peripheral side of the lower seat plate 3. The lower seat plate is anchored to the pier top support pad stone to complete the installation of the cylindrical support.

[0086] In order to further optimize the above technical solution, a steel plate 15 is provided on the upper surface of the upper seat plate 1, and the steel plate 15 is pre-embedded at the bottom of the beam end, and the steel plate 15 is fastened to the upper seat plate 1 by bolts. The upper seat plate is connected to the beam body through the pre-embedded steel plate at the bottom of the beam end, and the beam body and the cylindrical support are connected into an integral structure by bolts.

[0087] In this embodiment, upper limit plates are fixed at both ends of the lower surface of the upper seat plate 1 in the transverse bridge direction, the top of the middle seat plate 2 is located between the two upper limit plates, and upper guide stainless steel slide plates 13 are fixed to the side walls of the two upper limit plates facing the middle seat plate 2, and upper guide slide plates 14 are fixed to the side walls of the middle seat plate 2 facing the upper limit plates, and the upper guide slide plates 14 abut against the upper guide stainless steel slide plates 13 to form an upper guide friction pair.

[0088] In order to further optimize the above technical scheme, improve the sealing performance of the rotating friction pair, and prevent dust from entering and affecting the rotation effect of the rotating friction pair, sealing strips 10 are provided on both sides of the cylindrical slide plate 7 in the transverse bridge direction, and U-shaped sealing seats 8 are fixed on the upper surfaces of both sides of the lower seat plate 3 in the longitudinal bridge direction relative to the cylindrical slide plate 7, and a cylindrical sealing strip 9 is embedded in the U-shaped groove of the sealing seat 8.

[0089] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

[0090] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A cylindrical support, characterized in that: include: Upper seat plate (1), A flat stainless steel slide plate (4), wherein the flat stainless steel slide plate (4) is fixed on the lower surface of the upper seat plate (1); A lower seat plate (3), the lower seat plate (3) and the upper seat plate (1) are arranged symmetrically up and down, and the upper surface of the lower seat plate (3) is a concave cylindrical surface; A middle seat plate (2), wherein the lower surface of the middle seat plate (2) is a convex cylindrical surface matching the concave cylindrical surface; the middle seat plate (2) is embedded between the opposite plate surfaces of the upper seat plate (1) and the lower seat plate (3); A planar slide plate (5), wherein the planar slide plate (5) is fixed on the upper surface of the middle seat plate (2) and abuts against the planar stainless steel slide plate (4) to form a planar sliding friction pair; A cylindrical stainless steel slide plate (6), wherein the cylindrical stainless steel slide plate (6) is fixed on the convex cylindrical surface; A cylindrical slide plate (7), wherein the cylindrical slide plate (7) is fixed on the concave cylindrical surface and abuts against the cylindrical stainless steel slide plate (6) to form a rotational friction pair.

2. A cylindrical support according to claim 1, characterized in that: Lower limit plates are fixed at both ends of the upper surface of the lower seat plate (3) in the transverse bridge direction, the bottom end of the middle seat plate (2) is located between the two lower limit plates, the two lower limit plates are fixed with lower guide stainless steel slide plates (11) on the side walls facing the middle seat plate (2), and the middle seat plate (2) is fixed with lower guide slide plates (12) on the side walls facing the lower limit plates, and the lower guide slide plates (12) are in contact with the lower guide stainless steel slide plates (11) to form a lower guide friction pair.

3. A cylindrical support according to claim 1, characterized in that: Upper limit plates are fixed at both ends of the lower surface of the upper seat plate (1) in the transverse bridge direction, the top of the middle seat plate (2) is located between the two upper limit plates, the two upper limit plates are fixed with upper guide stainless steel slide plates (13) on the side walls facing the middle seat plate (2), and the middle seat plate (2) is fixed with upper guide slide plates (14) on the side walls facing the upper limit plates, and the upper guide slide plates (14) are in contact with the upper guide stainless steel slide plates (13) to form an upper guide friction pair.

4. A cylindrical support according to claim 1, characterized in that: A sealing strip (10) is provided on the circumferential side of the planar slide plate (5).

5. A cylindrical support according to claim 4, characterized in that: The sealing strips (10) are provided on both sides of the cylindrical slide plate (7) in the transverse direction, and U-shaped sealing seats (8) are fixed on the upper surfaces of both sides of the lower seat plate (3) relative to the cylindrical slide plate (7) in the longitudinal direction, and a cylindrical sealing strip (9) is embedded in the U-shaped groove of the sealing seat (8).

6. A cylindrical support according to any one of claims 1 to 5, characterized in that: The cylindrical support includes a longitudinal movable support, a multi-directional movable support, a transverse movable support and a fixed support.

7. A cylindrical support according to claim 6, characterized in that: A steel plate (15) is provided on the upper surface of the upper seat plate (1), the steel plate (15) is pre-buried at the bottom of the beam end, and the steel plate (15) and the upper seat plate (1) are fastened by bolts.

8. The cylindrical support according to claim 6, characterized in that: The cross section of the lower seat plate (3) is convex, and an anchor (16) is fixed to the convex peripheral side of the lower seat plate (3).

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