Torsion bar elastic constraint spherical steel support

Abstract

The utility model discloses a torsion bar elastic restraint spherical steel support which comprises a longitudinal spherical steel support, the longitudinal spherical steel support comprises a fixed support bottom plate located at the bottom, a support bottom basin is arranged on the support bottom plate in a sliding mode, a torsion bar assembly for restraining and limiting is arranged on the support bottom plate, and the longitudinal spherical steel support comprises a longitudinal spherical steel support body. The torsion bar assemblies are arranged on the two opposite side faces of the support bottom basin. Horizontal movement of the pin shaft end of the torsion arm is restrained through the side plate slide way, rigid rotation of the torsion arm is achieved when the support moves, and the torsion arm rotates to drive the torsion rod spring to twist; a connecting rod assembly is removed, so that the structure is more compact; and the direction of external force is parallel to the axis of the fixing bolt, so that the stress of the bolt is optimized, and the bridge support is more suitable for the application scene of the bridge support.

Description

TECHNICAL FIELD

[0001] The utility model belongs to bridge engineering technical field, concretely relates to a torsion bar elastic restraint ball type steel support. BACKGROUND

[0002] With the rise of the transportation industry, China's long-span bridges have developed rapidly. Long-span bridges have long bodies and heavy loads, and the expansion and contraction displacement of the beam end increases under the influence of temperature and load, and the maximum can reach 2.6m (Sutong Yangtze River Bridge).

[0003] Currently, in the structure of long-span continuous girder bridges, each bridge is mostly used in fixed + movable support system, if the fixed support is located at the midpoint of each link, the expansion and contraction displacement of the beam end can be symmetrical about the center position and will not be concentrated on one end. However, in most cases, the fixed support is not located at the center position, at this time, the expansion and contraction displacement of the beam body is concentrated on the movable support side beam end, which further increases the expansion and contraction displacement of the long-span bridge. The huge expansion and contraction displacement affects the stress and stability of the seamless line on the railway bridge and affects the driving comfort and increases the impact load of the bridge on the highway bridge.

[0004] Chinese patents "Longitudinal elastic restraint multifunctional shock mitigation support" (application number 202111111450.4) and "Bridge support" (application number 202110379490.0) both provide a shock mitigation support with longitudinal adjustable limiting and longitudinal elastic restraint. The method of setting elastic restraint between the pier and the beam body makes the expansion and contraction zero position of the beam body at the center of the beam body, avoiding the concentration of expansion and contraction displacement on one side of the beam body. Currently, the elastic restraint support uses a disc spring group to provide elastic restraint force. In order to provide the required stiffness and elastic restraint force, the disc spring group is often composed of dozens of pieces in positive and negative directions. Affected by the friction between the pieces, the stiffness stability of the disc spring group is poor, which leads to low symmetry of the temperature displacement of the two ends of the bridge. Therefore, it is necessary to provide an elastic restraint ball type steel support with high precision stiffness.

[0005] Chinese patent "Torsion bearing linear spring device and design method" (application number: 202410343442.X) provides a spring device with horizontal translation constraint, which converts the torsion bearing of the torsion bar into linear bearing by using the crank slider mechanism. However, the displacement range of the torsion bar system of the utility model is small due to the movement space between the torsion arm and the connecting rod, and the application scene is limited. SUMMARY

[0006] The utility model provides a torsion bar elastic restraint ball type steel support to solve the problems in the prior art.

[0007] The utility model discloses a technical scheme is: a torsion bar elastic constraint ball type steel support, including longitudinal type ball type rigid support, longitudinal type ball type rigid support includes the support bottom plate of fixed bottom, the support bottom basin is slidably arranged on the support bottom plate, the torsion bar assembly of constraint restriction is provided on the support bottom plate.

[0008] Further, the torsion bar assembly is arranged at two opposite sides of the support bottom basin.

[0009] Further, the torsion bar assembly comprises a fixing seat, a through hole is formed in the fixing seat, and a fixing bolt passes through the through hole to fix the fixing seat and the support bottom basin.

[0010] Further, a guide structure is arranged between the support bottom basin and the support bottom plate.

[0011] Further, a side plate is formed on the support bottom plate, and a recess is formed between the two side plates.

[0012] Further, the torsion bar assembly comprises a side plate sliding block, and the side plate sliding block is arranged in the recess.

[0013] Further, the side plate sliding block is movably connected with a torsion arm through a pin shaft, and the torsion arm is between the two side plates.

[0014] Further, an assembling hole is formed in the fixing seat, a torsion shaft is arranged in the assembling hole, and the torsion shaft is in clearance fit in the assembling hole.

[0015] Further, the two ends of the torsion shaft protrude from the fixing seat, and the protruding sections are fixedly connected with the torsion arm.

[0016] The utility model has the advantages of the following:

[0017] The utility model constrains the horizontal movement of the torsion arm pin shaft end through the side plate sliding track, so that the torsion arm realizes rigid body rotation when the support moves, and the torsion arm rotation drives the torsion bar spring to twist; the connecting rod assembly is removed, so that the structure is more compact; and the direction of external force is parallel to the axis of the fixing bolt, the bolt stress is optimized, and the utility model is more suitable for bridge support application scenarios. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is the perspective view of the utility model;

[0019] Figure 2 is the structure schematic view of the torsion bar assembly in the utility model;

[0020] Figure 3 is the structure schematic view of the longitudinal type ball type rigid support in the utility model;

[0021] Figure 4Is the middle position schematic diagram of the utility model;

[0022] Figure 5 Is the movement schematic diagram of the utility model twist arm;

[0023] Among them:

[0024] 1 longitudinal type ball rigid support 2 torsion bar assembly

[0025] 11 support bottom basin 12 bottom plate slide

[0026] 13 side plate slide 14 side plate

[0027] 15 support upper plate 16 spherical wear plate

[0028] 17 spherical crown lining plate 18 upper plane wear plate

[0029] 19 lower plane wear plate 110 support bottom plate

[0030] 21 torsion shaft 22 fixed seat

[0031] 23 torsion arm 24 side plate slide block

[0032] 25 pin shaft 26 fixed bolt. DETAILED DESCRIPTION

[0033] Below, referring to the drawings and examples, the utility model is explained in detail:

[0034] As Figures 1 to 5 Indicated, a kind of torsion bar elastic restraint ball type steel support, including longitudinal type ball rigid support 1, the longitudinal type ball rigid support 1 includes the support bottom plate 110 fixed at bottom, the support bottom basin 11 is slidably arranged on the support bottom plate 110, the torsion bar assembly 2 of being restricted and being arranged on the support bottom plate 110 is restricted.

[0035] The torsion bar assembly 2 is arranged at two opposite sides of support bottom basin 11.

[0036] The torsion bar assembly 2 includes fixed seat 22, the through hole is formed in the fixed seat 22, and fixed bolt 26 passes through above-mentioned through hole, with fixed seat 22 and support bottom basin 11 are fixed.

[0037] The guide structure is further provided between the support bottom basin 11, support bottom plate 110.

[0038] The side plate 14 is formed on the support bottom plate 110, and the recess is formed in alignment between two side plates 14.

[0039] The torsion bar assembly 2 includes side plate slide block 24, and the side plate slide block 24 is arranged in recess.

[0040] The side plate slider 24 is movably connected to the torsion arm 23 via a pin 25, and the torsion arm 23 is located between the two side plates 14.

[0041] The mounting base 22 has an assembly hole, and a torsion shaft 21 is provided in the assembly hole, with the torsion shaft 21 in clearance fit within the assembly hole.

[0042] Both ends of the torsion shaft 21 protrude from the fixed base 22, and the protruding sections are fixedly connected to the torsion arm 23.

[0043] Specifically, such as Figure 1 As shown, a torsion bar elastically constrained spherical steel bearing mainly includes a longitudinal spherical rigid bearing 1 and a torsion bar assembly 2. The longitudinal spherical rigid bearing 1 realizes the function of a bridge bearing, and the torsion bar assembly 2 constrains the longitudinal spherical rigid bearing 1.

[0044] Specifically, such as Figure 2 As shown, the torsion bar assembly 2 includes a torsion shaft 21, a fixed base 22, a torsion arm 23, a side plate slider 24, a pin 25, and a fixing bolt 26. The fixed base 22 includes two fixed plates, with through holes formed in the two fixed plates. The fixing bolt 26 can pass through the through holes. The two fixed plates are joined together to form an assembly hole, through which the torsion shaft 21 passes.

[0045] More specifically, the protruding section of the torsion shaft 21 is fixedly connected to the torsion arm 23, and a mounting hole corresponding to the torsion shaft 21 is formed in the torsion arm 23.

[0046] More specifically, the side plate slider 24 is rectangular.

[0047] Specifically, such as Figure 3 As shown, the guide structure is a double guide structure, including the side plate slide 13 between the side plates 14. At the same time, the middle of the support base plate 110 protrudes upward to form a step. The support base plate 110, the protrusion, and the side plates 14 enclose each other to form the base plate slide 12, so that the support base plate 11 can move on the support base plate 110.

[0048] Specifically, such as Figure 4 As shown, a lower flat wear-resistant plate 19 is provided between the support base basin 11 and the support base plate 110. A spherical crown liner 17 is provided on the top of the support base basin 11. An upper flat wear-resistant plate 18 is provided between the support base basin 11 and the spherical crown liner 17. A support upper plate 15 is provided at the upper arc surface of the spherical crown liner 17. A spherical wear-resistant plate 16 is provided between the spherical crown liner 17 and the support upper plate 15. At the same time, the support upper plate 15 is inserted into the base basin of the support base basin 11.

[0049] Specifically, the support bottom basin 11 moves to drive the horizontal movement of the torsion shaft 21, one end of the torsion arm 23 is fixedly connected with the torsion shaft 21, and the other end is slidably connected with the side plate 14 through the pin shaft 25, the side plate 14 limits the movement of the side plate sliding block 24, so that the torsion arm 23 is driven to rotate during the movement of the support upper plate 15, the rotation of the torsion arm 23 drives the torsion of the torsion shaft 21, and the elastic constraint of the torsion of the torsion shaft 21 is converted into horizontal elastic constraint.

[0050] Specifically, the torsion shaft 21 is fixedly connected with the torsion arm 23, and the two do not rotate or move relative to each other, the entire assembly is installed to the support bottom basin 11 through the fixing bolt 26, the fixing seat 22 is in clearance fit with the torsion shaft 21, and the torsion shaft 21 can freely rotate in the inner hole of the fixing seat. The torsion arm 23 is connected with the sliding block through the pin shaft 26, and the clearance fit is adopted in the shaft fit of each hole of the pin shaft, so that the rotation is released. The torsion arms on the two sides of the torsion rod assembly are opposite to each other, so that the turning directions of the pin shaft holes of the two torsion arms are opposite when the pin shaft holes move in the same direction, and the torsion rod spring is driven to twist.

[0051] The working process of the utility model is as follows:

[0052] When the beam body does not have temperature displacement, the support is in the middle position, and the torsion rod assembly does not output elastic constraint force to the outside.

[0053] When the beam body has temperature displacement, the torsion rod assembly 2 fixed to the support bottom basin moves longitudinally with the support bottom basin 11, but the side plate sliding block of the torsion rod assembly 2 is constrained by the side plate sliding way and does not move longitudinally, so that the torsion arm rotates in this case, the torsion arms 23 on the two sides of the torsion rod assembly 2 are opposite to each other, so that the two torsion arms 23 rotate in opposite directions, and the torsion rod spring is driven to twist, and the elastic constraint force is output to the outside.

[0054] The utility model constrains the horizontal movement of the torsion arm pin shaft end through the side plate sliding way, so that the torsion arm realizes rigid body rotation during the movement of the support, the torsion arm rotation drives the torsion of the torsion rod spring, the connecting rod assembly is removed, the structure is more compact, the direction of external force is parallel to the axis of the fixing bolt, the bolt stress is optimized, and the utility model is more suitable for bridge support application scenarios.

Claims

1. A torsion bar elastically constrained spherical steel support, comprising a longitudinal spherical rigid support (1), characterized in that: The longitudinal spherical rigid support (1) includes a support base plate (110) fixed at the bottom, a support base basin (11) is slidably disposed on the support base plate (110), and a torsion bar assembly (2) for constraint is disposed on the support base plate (110).

2. The torsion bar elastically constrained spherical steel support according to claim 1, characterized in that: The torsion bar assembly (2) is located on two opposite sides of the support base (11).

3. The torsion bar elastically constrained spherical steel support according to claim 1, characterized in that: The torsion bar assembly (2) includes a fixed seat (22) with a through hole formed therein. A fixing bolt (26) passes through the through hole to fix the fixed seat (22) to the support base (11).

4. The torsion bar elastically constrained spherical steel support according to claim 3, characterized in that: A guide structure is also provided between the support base plate (11) and the support base plate (110).

5. A torsion bar elastically constrained spherical steel support according to claim 3, characterized in that: Side plates (14) are formed on the base plate (110) of the support, and grooves are formed between the two side plates (14).

6. A torsion bar elastically constrained spherical steel support according to claim 5, characterized in that: The torsion bar assembly (2) includes a side plate slider (24) disposed in a groove.

7. A torsion bar elastically constrained spherical steel support according to claim 6, characterized in that: The side plate slider (24) is movably connected to the torsion arm (23) via a pin (25), and the torsion arm (23) is located between the two side plates (14).

8. A torsion bar elastically constrained spherical steel support according to claim 7, characterized in that: The mounting base (22) forms an assembly hole, and a torsion shaft (21) is provided in the assembly hole, with the torsion shaft (21) in clearance fit within the assembly hole.

9. A torsion bar elastically constrained spherical steel support according to claim 8, characterized in that: Both ends of the torsion shaft (21) protrude from the fixed seat (22), and the protruding sections are fixedly connected to the torsion arm (23).

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