Railway bridge expansion joint convenient to replace

Abstract

The utility model discloses a railroad bridge expansion joint convenient to replace, and relates to the technical field of bridge expansion joints, the railroad bridge expansion joint convenient to replace comprises a waterproof belt, the two ends of the waterproof belt are detachably connected with a supporting plate pressing strip assembly in an inserted and matched mode, and the supporting plate pressing strip assembly is detachably connected with a butt joint cavity of an aluminum alloy profiled bar in an inserted and matched mode. An anchoring cavity is formed in the other end of the aluminum alloy profiled bar. The waterproof sealing structure has the advantages of being convenient to disassemble and replace while guaranteeing the waterproof sealing function. In addition, the waterproof belt is made of high-durability materials, durability of the waterproof belt is far better than that of common rubber strips, and the waterproof belt is not prone to damage and more reliable in waterproof effect.

Description

TECHNICAL FIELD

[0001] The utility model relates to bridge expansion joint technical field especially, it relates to a railway bridge expansion joint convenient to replace. BACKGROUND

[0002] Railway bridge can cause expansion and contraction deformation under the action of temperature change, natural settlement and vehicle load, etc. Railway bridge expansion joint can reduce the impact force of bridge structure caused by temperature expansion or contraction, play a buffering role, protect the stability and safety of bridge structure. Due to the existence of natural settlement, driving influence and other factors of railway bridge, the bridge structure can cause slight deformation. Expansion joint can adjust the bridge within a certain range by designing reasonable parameters and forms to adapt to these deformations, ensure the smooth and safe railway operation. Railway bridge expansion joint can withstand the transmission of vehicle load while meeting the expansion and contraction deformation. The strength and stability of expansion joint should be considered in the design to ensure that the bridge does not occur structural damage or fracture during use. Railway bridge expansion joint can also prevent the displacement of bridge in the horizontal direction. By designing reasonable expansion joint form and sealing material, the transmission of horizontal displacement can be prevented, and the stability and continuity of the whole bridge can be maintained. Therefore, expansion joint needs to be set at the appropriate part of the bridge. Rubber strip is often used for sealing and waterproof at bridge expansion joint to prevent rainwater and salt water used for snow removal from flowing down and corroding concrete; Rubber material can be affected by factors such as wear, aging and corrosion during long-term use, and needs frequent maintenance and replacement. However, the existing expansion joint using rubber material for waterproofing has the problems of inconvenient replacement and maintenance, time-consuming and laborious. CONTENT OF THE UTILITY MODEL

[0003] The utility model aims at providing a railway bridge expansion joint convenient to replace, solving the problem of inconvenient replacement and maintenance, time-consuming and laborious of expansion joint using rubber material for waterproofing mentioned in the background.

[0004] The utility model adopts the following technical scheme:

[0005] The utility model relates to a railway bridge expansion joint convenient to replace, including waterproof belt, both ends of waterproof belt are respectively with corresponding tray strip assembly detachable plug-in joint cooperation connection, tray strip assembly is detachably connected with aluminium alloy profiled material, aluminium alloy profiled material is provided with anchoring assembly at the end away from waterproof belt.

[0006] Further, the aluminum alloy profile is provided with a butt joint cavity, the opening of the butt joint cavity is provided with a lower protruding tooth and an upper protruding tooth, the lower protruding tooth and the inner wall of the bottom of the butt joint cavity form a lower fixing groove, the upper protruding tooth and the upper inner wall of the butt joint cavity form an upper fixing groove, the supporting plate pressing strip assembly is located in the butt joint cavity, the supporting plate pressing strip assembly is provided with an elastic sealing gasket between the lower fixing groove, and the supporting plate pressing strip assembly is provided with a V-shaped steel spring between the upper fixing groove.

[0007] Further, the supporting plate pressing strip assembly comprises a supporting plate, the supporting plate is provided with a limiting assembly, and the two ends of the waterproof belt are respectively detachably connected with the corresponding limiting assemblies through plug-in connection.

[0008] Further, the limiting assembly comprises a limiting cavity formed in the supporting plate, a limiting groove is formed on the inner wall of the upper side of the limiting cavity, the waterproof belt is plugged into the limiting cavity, the waterproof belt is located at the lower part of the limiting groove, a pad plate is arranged between the limiting cavity and the waterproof belt, and a pressing strip is arranged between the limiting groove and the waterproof belt.

[0009] Further, the elastic sealing gasket is a belt structure made of expanded polytetrafluoroethylene, and the waterproof belt is a folded plate structure made of a modified polytetrafluoroethylene plate.

[0010] Further, the anchoring assembly comprises an anchoring cavity formed along the length direction of the aluminum alloy profile, the anchoring cavity is provided with a trapezoidal nut, the trapezoidal nut is threadedly connected with an anchoring steel bar, a locking nut is threadedly connected with the anchoring steel bar, and the locking nut abuts against the aluminum alloy profile.

[0011] Further, the anchoring cavity is in the shape of a dovetail groove, the trapezoidal nut is matched with the anchoring cavity in shape, and a flat washer is arranged between the locking nut and the anchoring cavity.

[0012] Still further, the butt joint cavity penetrates through the two ends of the aluminum alloy profile.

[0013] Compared with the prior art, the beneficial technical effects of the utility model are as follows:

[0014] The utility model discloses a butt joint cavity is arranged on the aluminum alloy profile, the butt joint cavity and supporting plate pressing strip assembly are detachably plugged in and connected, the supporting plate pressing strip assembly and waterproof belt are plugged in and connected, waterproof sealing function is guaranteed, and the waterproof belt is convenient to disassemble and replace. BRIEF DESCRIPTION OF DRAWINGS

[0015] The utility model will be further described in connection with the drawings.

[0016] Figure 1 The utility model relates to a railway bridge expansion joint convenient to replace section view,

[0017] Figure 2 The utility model relates to a railway bridge expansion joint convenient to replace main structure diagram,

[0018] Figure 3 The utility model discloses a supporting plate pressing strip subassembly detail view,

[0019] Figure 4 The utility model discloses an overall plan view.

[0020] Mark explanation: 1, waterproof belt;2, aluminium alloy profile;3, butt joint cavity;3-1, lower protruding tooth;3-2, lower fixed groove;3-3, upper protruding tooth;3-4, upper fixed groove;4, supporting plate pressing strip subassembly;4-1, supporting plate;4-2, limiting component;4-2-1, limiting groove;4-2-2, pressing strip;4-2-3, backing plate;4-2-4, limiting cavity;5, V-shaped steel spring;6, elastic sealing pad;7, anchoring component;7-1, anchoring cavity;7-2, trapezoidal nut;7-3, locking nut;7-4, anchoring steel bar;7-5, flat washer. Specific implementation

[0021] In order to make the technical problem, technical scheme and beneficial effect that the utility model wants to solve more clearly clear, the following combines the drawing and example, and further detailedly explains the utility model.

[0022] As Figure 1 Shown, the utility model discloses a railway bridge expansion joint convenient to replace, including waterproof belt 1, and the both ends of waterproof belt 1 are respectively with corresponding supporting plate pressing strip subassembly 4 can detachable insertion joint cooperation connection, and supporting plate pressing strip subassembly 4 is detachably connected with aluminium alloy profile 2, and aluminium alloy profile 2 is provided with anchoring component 7 at the end away from waterproof belt 1.

[0023] As Figure 2 Shown, aluminium alloy profile 2 is provided with butt joint cavity 3, and butt joint cavity 3 penetrates the both ends of aluminium alloy profile 2. The opening of butt joint cavity 3 is provided with lower protruding tooth 3-1 and upper protruding tooth 3-3, and lower protruding tooth 3-1 and the bottom inner wall of butt joint cavity 3 form lower fixed groove 3-2, and upper protruding tooth 3-3 and the upper inner wall of butt joint cavity 3 form upper fixed groove 3-4, and supporting plate pressing strip subassembly 4 is located in butt joint cavity 3, and supporting plate pressing strip subassembly 4 is provided with elastic sealing pad 6 between lower fixed groove 3-2, and in the utility model, elastic sealing pad 6 is the body structure made of expanded polytetrafluoroethylene. Supporting plate pressing strip subassembly 4 is provided with V-shaped steel spring 5 between upper fixed groove 3-4, and V-shaped steel spring 5 and elastic sealing pad 6 make the connection of supporting plate pressing strip subassembly 4 and aluminium alloy profile 2 more closely firm.

[0024] The pallet pressing strip assembly 4 comprises a pallet 4-1, a limiting assembly 4-2 is arranged in the pallet 4-1, and the two ends of the waterproof belt 1 are respectively connected in detachable plug-in fit with the corresponding limiting assemblies 4-2.

[0025] As shown in Figure 3 The limiting assembly 4-2 comprises a limiting cavity 4-2-4 arranged in the pallet 4-1, a limiting groove 4-2-1 is arranged on the inner wall of the limiting cavity 4-2-4, the waterproof belt 1 is plugged in fit with the limiting cavity 4-2-4, the waterproof belt 1 is located at the lower part of the limiting groove 4-2-1, a backing plate 4-2-3 is arranged between the limiting cavity 4-2-4 and the waterproof belt 1, and a pressing strip 4-2-2 is arranged between the limiting groove 4-2-1 and the waterproof belt 1. The waterproof belt 1 can be tightly and firmly pressed in the pallet pressing strip assembly 4 through the cooperation of the backing plate 4-2-3 and the pressing strip 4-2-2.

[0026] In the embodiment, the waterproof belt 1 is made of a folded plate structure of modified polytetrafluoroethylene plate, and the material has better waterproofness and durability than rubber material.

[0027] When the pallet pressing strip assembly 4 needs to be replaced, the V-shaped steel spring 5 can be pried and taken out by using a tool, and the pallet pressing strip assembly 4 can be smoothly taken out and replaced after losing the extrusion of the V-shaped steel spring 5. The waterproof belt 1 can be replaced by taking out the pressing strip 4-2-2 from the limiting groove 4-2-1, then taking out the backing plate 4-2-3, and finally taking out and replacing the waterproof belt 1.

[0028] As shown in Figure 2 The anchoring assembly 7 comprises an anchoring cavity 7-1 arranged along the length direction of the aluminum alloy profiled material 2, a trapezoidal nut 7-2 arranged in the anchoring cavity 7-1, an anchoring steel bar 7-4 provided with a threaded end, the trapezoidal nut 7-2 is in threaded connection with the anchoring steel bar 7-4, the anchoring steel bar 7-4 is in threaded connection with a locking nut 7-3, and the locking nut 7-3 abuts against the aluminum alloy profiled material 2.

[0029] The anchoring cavity 7-1 is in dovetail groove type, the trapezoidal nut 7-2 is matched with the anchoring cavity 7-1 in shape structure, and a flat washer 7-5 is arranged between the locking nut 7-3 and the anchoring cavity 7-1. The anchoring steel bar 7-4 is sequentially sleeved with the locking nut 7-3 and the flat washer 7-5, the trapezoidal nut 7-2 inserted into the anchoring cavity 7-1 is screwed, and then the locking nut 7-3 is screwed, so that the anchoring steel bar 7-4 is connected with the aluminum alloy profiled material 2 firmly.

[0030] As shown in Figure 4 It is a top view of the overall effect of the utility model.

[0031] The working principle of the utility model is as follows:

[0032] First, the gasket 4-2-3 is inserted into the limiting cavity 4-2-4, then the waterproof belt 1 is inserted into the limiting cavity 4-2-4 along the upper edge of the gasket 4-2-3, and then the pressing strip 4-2-2 is inserted into the limiting groove 4-2-1 for sealing and anchoring, the waterproof belt 1 and the supporting plate and pressing strip assembly 4 are connected in a sealed manner, and the waterproof effect can be achieved. The waterproof belt 1 and the supporting plate and pressing strip assembly 4 are placed in the butt joint cavity 3, the supporting plate and pressing strip assembly 4 and the lower fixed groove 3-2 of the butt joint cavity 3 are placed with the elastic sealing gasket 6, and the supporting plate and pressing strip assembly 4 and the upper fixed groove 3-4 of the butt joint cavity 3 are placed with the V-shaped steel spring 5 for pressing and anchoring. The setting of the elastic sealing gasket 6 can prevent rainwater from seeping in and corroding.

[0033] The anchoring steel bar 7-4 is sequentially sleeved with the locking nut 7-3 and the flat washer 7-5, the threaded end of the anchoring steel bar 7-4 is inserted into the trapezoidal nut 7-2 in the anchoring cavity 7-1 and is tightened, and then the locking nut 7-3 is tightened, so that the anchoring steel bar 7-4 is connected with the aluminum alloy profiled material 2 firmly.

[0034] After the waterproof belt 1 on both sides is assembled according to the above steps, the other end of the anchoring steel bar 7-4 is connected with the bridge body, and when it is necessary to replace the supporting plate and pressing strip assembly 4, the V-shaped steel spring 5 can be pried and taken out by using a tool, and after the extrusion of the V-shaped steel spring 5 is lost, the supporting plate and pressing strip assembly 4 can be smoothly taken out and replaced. When it is necessary to replace the waterproof belt 1, the pressing strip 4-2-2 is taken out from the limiting groove 4-2-1, then the gasket 4-2-3 is taken out, and finally the waterproof belt 1 is taken out and replaced.

[0035] In the process of thermal expansion and cold contraction of the bridge body, since the anchoring steel bar 7-4 is fixed on the bridge body, the aluminum alloy profiled material 2 and the supporting plate and pressing strip assembly 4 will move left and right, and the waterproof belt 1 will shrink or stretch under the extrusion or pulling of the supporting plate and pressing strip assembly 4. When it rains, rainwater falls on the waterproof belt 1, the waterproof belt 1 is made of high durability material, and the durability is much better than that of general rubber strips, so the waterproof belt 1 is not easy to be damaged, and the waterproof effect is more reliable. If the waterproof belt 1 is damaged and leaks, the waterproof belt 1 can be replaced according to the above steps, and the water seepage problem can be solved.

[0036] The above-described embodiments are only used to describe the preferred modes of the present application, and do not limit the scope of the present application. Without departing from the design spirit of the present application, various modifications and improvements to the technical solutions of the present application made by those skilled in the art shall fall within the protection scope determined by the claims of the present application.

Claims

1. A railway bridge expansion joint which facilitates replacement, characterised in that: The waterproof belt (1) is detachably connected with the corresponding supporting plate and pressing strip assembly (4) at both ends, the supporting plate and pressing strip assembly (4) is detachably connected with the aluminum alloy profile (2), and the aluminum alloy profile (2) is provided with an anchoring assembly (7) at the end away from the waterproof belt (1).

2. The easily replaceable railway bridge expansion joint of claim 1, wherein: The aluminum alloy profile (2) is provided with a docking cavity (3), the opening of the docking cavity (3) is provided with a lower protruding tooth (3-1) and an upper protruding tooth (3-3), the lower protruding tooth (3-1) and the bottom inner wall of the docking cavity (3) form a lower fixed groove (3-2), the upper protruding tooth (3-3) and the upper inner wall of the docking cavity (3) form an upper fixed groove (3-4), the supporting plate and pressing strip assembly (4) is located in the docking cavity (3), the supporting plate and pressing strip assembly (4) is provided with an elastic sealing pad (6) between the lower fixed groove (3-2), and the supporting plate and pressing strip assembly (4) is provided with a V-shaped steel spring (5) between the upper fixed groove (3-4).

3. The easily replaceable railway bridge expansion joint of claim 2, wherein: The supporting plate and pressing strip assembly (4) comprises a supporting plate (4-1), the supporting plate (4-1) is provided with a limiting assembly (4-2), and the both ends of the waterproof belt (1) are detachably connected with the corresponding limiting assembly (4-2) through plug-in connection.

4. The easily replaceable railway bridge expansion joint of claim 3, wherein: The limiting assembly (4-2) comprises a limiting cavity (4-2-4) formed in the supporting plate (4-1), the inner wall of the limiting cavity (4-2-4) is provided with a limiting groove (4-2-1) on the upper side, the waterproof belt (1) is connected with the limiting cavity (4-2-4) through plug-in connection, the waterproof belt (1) is located in the lower part of the limiting groove (4-2-1), the limiting cavity (4-2-4) is provided with a pad (4-2-3) between the waterproof belt (1), and the limiting groove (4-2-1) is provided with a pressing strip (4-2-2) between the waterproof belt (1).

5. The easily replaceable railway bridge expansion joint of claim 2, wherein: The elastic sealing pad (6) is a belt structure made of expanded polytetrafluoroethylene, and the waterproof belt (1) is a folded plate structure made of a modified polytetrafluoroethylene plate.

6. The easily replaceable railway bridge expansion joint of claim 1, wherein: The anchoring assembly (7) comprises an anchoring cavity (7-1) formed along the length direction of the aluminum alloy profile (2), the anchoring cavity (7-1) is provided with a trapezoidal nut (7-2), the trapezoidal nut (7-2) is threadedly connected with an anchoring steel bar (7-4), the anchoring steel bar (7-4) is threadedly connected with a locking nut (7-3), and the locking nut (7-3) abuts against the aluminum alloy profile (2).

7. The easily replaceable railway bridge expansion joint of claim 6, wherein: The anchoring cavity (7-1) is in the shape of a dovetail groove, the trapezoidal nut (7-2) is matched with the anchoring cavity (7-1) in shape; The locking nut (7-3) is provided with a flat washer (7-5) between the anchoring cavity (7-1).

8. The easily replaceable railway bridge expansion joint of claim 2, wherein: The docking cavity (3) penetrates through the first end and the second end of the aluminum alloy profile (2).

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