Quick assembly telescopic device and installation method thereof

Abstract

The present invention provides a quick-assembly telescopic device and its installation and construction method. The quick-assembly telescopic device includes embedded parts, anchor bases, and a telescopic base plate. The embedded parts and anchor bases each comprise two sets. The two sets of embedded parts are correspondingly embedded within the two beam sections and correspond to the two step groove structures above and below. The two sets of anchor bases are fixedly mounted on the two sets of embedded parts. The telescopic base plate comprises two pieces, and the two pieces are vertically connected to the two sets of anchor bases in a height-adjustable manner. The upper surfaces of the two telescopic base plates are adjusted to be flush with the upper surface of the asphalt pavement layer, and the ends of the two telescopic base plates are facing each other, whereupon they are fastened to the two sets of anchor bases via locking bolts. The quick-assembly telescopic device of the present invention enables rapid installation and leveling, resolving the problems of conventional expansion joint devices, such as slow installation and replacement speeds and the inability to quickly level or adjust height.

Description

Technical Field

[0001] The present invention relates to the field of bridge construction, and in particular to a quick-assembly telescopic device and an installation and construction method thereof. Background Art

[0002] With the development of highway bridge and urban elevated road construction in my country, and the country's emphasis on improving the environment of traffic arteries, expansion joints have been widely used as important auxiliary components of bridge connections.

[0003] At present, the expansion joints used in bridges at home and abroad mainly include modular (including single-slit), comb plate, seamless and other types. These types of devices have the following characteristics:

[0004] Modular expansion joints are constructed of steel sections with gaps between them to accommodate displacement. The steel surfaces form the wheel support surface, making them suitable for bridges with varying displacements. The waterproofing system often uses an inlaid waterstop. However, the disadvantage is that when vehicles pass through the gaps, they create impact and loud noise, resulting in poor driving comfort and significant noise pollution. Furthermore, debris and water easily accumulate within the gaps, shortening the lifespan of the waterstop.

[0005] Conventional comb-plate telescopic devices use a pair of interlocking comb-shaped plates to form the bearing surface and displacement gap. This creates a continuous transition in the driving direction relative to the wheels, resulting in minimal impact and low noise when a vehicle passes through, ensuring a comfortable ride. However, a disadvantage is that after a wheel quickly passes and disengages the comb-plates, the plates rebound due to inertia, causing fatigue in the connecting components, leading to loosening, falling off, or damage, compromising driving safety. Furthermore, replacing the waterstop requires complete removal of the toothed plates, resulting in extremely high maintenance costs.

[0006] The seamless telescopic device is cast in the beam joints with chemical materials, presenting a continuous and seamless state as a whole, and driving is smooth. However, due to structural influences, it cannot withstand the rolling conditions of heavy-loaded vehicles, has a limited scope of adaptability, and has a short overall lifespan. Summary of the Invention

[0007] The main purpose of the present invention is to provide a quick-assembly expansion joint device and its installation and construction method, so as to at least solve the problems of slow installation and replacement of ordinary expansion joint devices and inability to quickly level or raise them.

[0008] In order to achieve the above-mentioned purpose, the first aspect of the present invention provides a quick-assembly telescopic device, which is applied between two adjacent beam sections of a bridge, an asphalt pavement layer is laid on the top of the two beam sections, and a notch is opened at the end of the asphalt pavement layer to form a step groove structure between the end of the asphalt pavement layer and the end of the beam body; the quick-assembly telescopic device includes: embedded parts, which are divided into two groups, and the two groups of embedded parts are correspondingly buried in the two beam sections and correspond to the two step groove structures up and down; anchor bases, which are divided into two groups, and the two groups of anchor bases are correspondingly fixedly installed on the two groups of embedded parts; telescopic base plates, which are two pieces, and the two telescopic base plates are connected to the two groups of anchor bases in a vertically adjustable manner; wherein the upper surfaces of the two telescopic base plates are respectively adjusted to be flush with the upper surface of the asphalt pavement layer and the ends of the two telescopic base plates are fastened to the two groups of anchor bases by locking bolts when they are opposite.

[0009] Furthermore, the embedded parts include: transverse ribs, there are two transverse ribs, the two transverse ribs extend along the width direction of the beam body and are embedded in the beam body; longitudinal ribs, there are multiple longitudinal ribs, the multiple longitudinal ribs are arranged at intervals along the width direction of the beam body and are welded together with the two transverse ribs; embedded steel plates, the length direction of the embedded steel plates extends along the width direction of the beam body, and the embedded steel plates and the multiple longitudinal ribs are welded together; wherein, the anchor base is fixedly installed on the embedded steel plate.

[0010] Furthermore, the longitudinal reinforcement is a "door"-shaped structure, the upper surface of the embedded steel plate is flush with the upper surface of the beam body, and the opposite sides of the two embedded steel plates are respectively flush with the ends of the two sections of the beam body.

[0011] Furthermore, the top of the anchoring base is provided with a plurality of limit grooves extending inwardly thereof in the vertical direction, and the lower rear end of the telescopic base is provided with a plurality of limit protrusions, which correspond one-to-one to and match the plurality of limit grooves; wherein, the plurality of limit protrusions can be telescopically embedded in the plurality of limit grooves to adjust the height of the telescopic base along the vertical direction.

[0012] Furthermore, each limiting groove and each limiting protrusion extends along the width direction of the beam body, and multiple limiting grooves and multiple limiting protrusions are evenly spaced along the length direction of the beam body; wherein the locking bolt is located between two adjacent limiting grooves.

[0013] Furthermore, a leveling pad is provided at the bottom of the limiting groove, and the lower end of the limiting protrusion is embedded in the limiting groove and abuts against the leveling pad to adjust the telescopic base plate to a predetermined height along the vertical direction.

[0014] Furthermore, two opposite side edges of the two telescopic base plates are tooth-shaped structures that continuously extend along the width direction of the beam body; and the tooth-shaped structures of the two telescopic base plates are arranged in an interlaced manner.

[0015] Furthermore, the quick-assembly telescopic device also includes: a protective plate, which is two pieces, and the two protective plates are correspondingly arranged below the two telescopic base plates; the two protective plates are used to close the gap between the two telescopic base plates.

[0016] Furthermore, the quick-assembly telescopic device also includes: a water guide groove, which is arranged between the two sections of the beam body along the width direction of the beam body, and the two side edges of the water guide groove are correspondingly connected to the end walls of the two sections of the beam body; a water leakage port is provided below the water guide groove; wherein, the water guide groove is used to collect water flowing down from the gap between the two telescopic base plates and guide it to a predetermined position through the water leakage port.

[0017] The second aspect of the present invention provides a method for installing and constructing a telescopic device, which is used for the quick-assembly telescopic device described above. The method comprises: embedding the embedded parts in the end of the beam of the bridge in advance; if there is a height difference between multiple beam sections in the vertical direction, the top surface of the beam with the highest height is used as the reference surface for embedding the embedded parts; if there is an unevenness problem between the beam end faces of the beam, the minimum distance between the beam ends of two adjacent beam sections is used as the reference distance for embedding the embedded parts; spreading an asphalt pavement layer on the beam; and laying a layer between the asphalt pavement layer and the embedded parts. Notches are opened at relative positions to form a step groove structure between the end of the asphalt pavement layer and the end of the beam body, and the top surface of the embedded part is exposed; an anchor base is installed on the top surface of the embedded part and a water guide groove is installed between two adjacent sections of the beam body; the height of the upper surface of the two adjacent telescopic base plates is adjusted to be flush with the upper surface of the asphalt pavement layer and the ends of the two telescopic base plates are facing each other, and the two telescopic base plates are fastened to the two sets of anchor bases by means of locking bolts; noise-reducing quick-drying concrete is poured between the anchor base and the asphalt pavement layer and flush with the asphalt pavement layer, and the installation is completed after the concrete solidifies.

[0018] The quick-assembly expansion joint device of the present invention is applied between two adjacent beam sections of a bridge. An asphalt pavement layer is laid above the two beam sections, and notches are provided at the ends of the asphalt pavement layer to form a step-trough structure between the ends of the asphalt pavement layer and the ends of the beam sections. The quick-assembly expansion joint device includes two sets of embedded parts, anchor bases, and expansion base plates. The two sets of embedded parts are embedded within the two beam sections and correspond to the two step-trough structures above and below. The two sets of anchor bases are fixedly mounted on the two sets of embedded parts. The expansion base plates are two pieces, and the two expansion base plates are vertically height-adjustably connected to the two sets of anchor bases. The upper surfaces of the two expansion base plates are adjusted to be flush with the upper surface of the asphalt pavement layer, and when the ends of the two expansion base plates face each other, they are fastened to the two sets of anchor bases via locking bolts. The quick-assembly expansion joint device of the present invention can be quickly installed and leveled, solving the problems of conventional expansion joint devices, such as slow installation and replacement speed and inability to quickly level or adjust height. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings, which constitute part of this application, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an undue limitation of the present invention. In the accompanying drawings:

[0020] Figure 1 This is a schematic diagram of the longitudinal cross-sectional structure of an optional quick-assembly telescopic device according to an embodiment of the present invention;

[0021] Figure 2 This is a partial enlarged structural diagram of an optional quick-assembly telescopic device according to an embodiment of the present invention;

[0022] Figure 3 This is a schematic diagram of the telescopic base structure of an optional quick-assembly telescopic device according to an embodiment of the present invention;

[0023] Figure 4 This is a schematic diagram corresponding to step S102 of an optional telescopic device installation construction method according to an embodiment of the present invention;

[0024] Figure 5 This is a schematic diagram corresponding to step S104 of an optional telescopic device installation construction method according to an embodiment of the present invention;

[0025] Figure 6 This is a schematic diagram corresponding to step S104 of an optional telescopic device installation construction method according to an embodiment of the present invention;

[0026] Figure 7 This is a schematic diagram corresponding to step S106 of an optional telescopic device installation construction method according to an embodiment of the present invention;

[0027] Figure 8 This is a schematic diagram corresponding to step S108 of an optional telescopic device installation construction method according to an embodiment of the present invention;

[0028] Figure 9 It is a schematic diagram corresponding to step S110 of an optional telescopic device installation construction method according to an embodiment of the present invention.

[0029] The above drawings include the following reference numerals:

[0030] 10. Embedded parts; 11. Horizontal ribs; 12. Longitudinal ribs; 13. Embedded steel plates; 20. Anchor base; 21. Limiting grooves; 22. Leveling pads; 30. Telescopic base plate; 31. Limiting bumps; 40. Locking bolts; 50. Beam body; 60. Asphalt pavement layer; 70. Protective plate; 80. Water guide trough; 81. Leakage outlet; 90. Noise-reducing concrete. DETAILED DESCRIPTION

[0031] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0032] like Figure 1 As shown, the quick-assembly telescopic device of the embodiment of the present invention is applied between two adjacent beam sections 50 of a bridge. An asphalt pavement layer 60 is laid on the top of the two beam sections 50. A notch is opened at the end of the asphalt pavement layer 60 so that a step groove structure is formed between the end of the asphalt pavement layer 60 and the end of the beam 50; the quick-assembly telescopic device includes embedded parts 10, anchor bases 20 and telescopic base plates 30. The embedded parts 10 and the anchor bases 20 are both in two groups. The two groups of embedded parts 10 are correspondingly buried in the two beam sections 50 and correspond to the two step groove structures up and down; the two groups of anchor bases 20 are fixedly installed on the two groups of embedded parts 10; the telescopic base plates 30 are in two pieces, and the two telescopic base plates 30 are connected to the two groups of anchor bases 20 in a vertically adjustable manner; the upper surfaces of the two telescopic base plates 30 are respectively adjusted to be flush with the upper surface of the asphalt pavement layer 60 and when the ends of the two telescopic base plates 30 are opposite to each other, they are fastened to the two groups of anchor bases 20 by locking bolts 40. The quick-assembly expansion joint device of the present invention can be quickly installed and leveled, solving the problems of slow installation and replacement speed of ordinary expansion joint devices and inability to quickly level and raise them.

[0033] When implementing it specifically, Figure 1 and Figure 2 As shown, further, the embedded parts 10 include transverse ribs 11, longitudinal ribs 12 and embedded steel plates 13, there are two transverse ribs 11, and the two transverse ribs 11 extend along the width direction of the beam body 50 and are embedded in the beam body 50; there are multiple longitudinal ribs 12, and the multiple longitudinal ribs 12 are evenly spaced along the width direction of the beam body 50 and welded together with the two transverse ribs 11; optionally, the longitudinal ribs 12 are a "door" shaped structure, and the two end portions below the longitudinal ribs 12 are bent relative to each other, and the two transverse ribs 11 and the two bent portions below the longitudinal ribs 12 are welded to each other. The length of the embedded steel plate 13 extends along the width of the beam 50. The lower surface of the embedded steel plate 13 is welded to the upper ends of the plurality of longitudinal ribs 12. The upper surface of the embedded steel plate 13 is flush with the upper surface of the beam 50. The opposing sides of the two embedded steel plates 13 are flush with the ends of the two sections of the beam 50. The anchor base 20 is fixedly mounted on the embedded steel plates 13. In actual use, the transverse ribs 11, longitudinal ribs 12, and embedded steel plates 13 are integrally machined and assembled into a single unit and embedded together in the beam 50 or pier, with the upper surface of the embedded steel plates 13 exposed.

[0034] Furthermore, if Figure 1 and Figure 2As shown, the top of the anchor base 20 is provided with a plurality of limiting grooves 21 extending inwardly thereof in the vertical direction, and the lower rear end of the telescopic base plate 30 is provided with a plurality of limiting protrusions 31, each limiting groove 21 and each limiting protrusion 31 extends along the width direction of the beam body 50, and the plurality of limiting grooves 21 and the plurality of limiting protrusions 31 are evenly spaced along the length direction of the beam body 50; in this embodiment, there are two limiting grooves 21 and two limiting protrusions 31, and the two limiting protrusions 31 correspond to the two limiting grooves 21 one by one and the structures match each other; the two limiting protrusions 31 can be telescopically embedded in the two limiting grooves 21 so that the telescopic base plate 30 can be adjusted along the vertical direction. The bottom of each limiting groove 21 is provided with a leveling pad 22, the specific thickness of which is set according to the required leveling height of the telescopic base plate 30. The lower end of the limiting protrusion 31 is embedded in the limiting groove 21, abutting and pressing against the leveling pad 22, thereby limiting the telescopic base plate 30 to a predetermined height in the vertical direction. A row of bolt holes is defined between the two limiting grooves 21 of the anchor base 20, and a corresponding row of bolt holes is defined between the two limiting protrusions 31 of the telescopic base plate 30. The telescopic base plate 30 and the anchor base 20 are fastened to each other by a plurality of locking bolts 40, thereby fixing the position of the two telescopic base plates 30. Optionally, the leveling pad 22 is a flexible structure that can effectively buffer the vertical vibration of the telescopic base plate 30 when a vehicle passes, reducing noise.

[0035] Furthermore, if Figure 3 As shown, the two opposing sides of the two telescopic base plates 30 are tooth-shaped structures that extend continuously along the width direction of the beam body 50. The tooth-shaped structures of the two telescopic base plates 30 are arranged in an interlaced manner, so that when two adjacent sections of the beam body 50 undergo telescopic displacement, the outer protrusions and grooves of the two tooth-shaped structures can overlap with each other. The tooth-shaped structures of the telescopic base plates 30 adopt a special wave-shaped structure, with the wave crest position of the tooth-shaped structure transitioning into an arc shape. At the same time, the angle between the two sides of the tooth-shaped structure is about 30°, which ensures the free extension and contraction of the two telescopic base plates 30 and enables close contact with the wheels, providing a continuous support surface for driving, effectively preventing vehicle jumping and vibration, and ensuring smooth and comfortable driving with excellent noise reduction effect.

[0036] Furthermore, if Figure 1 As shown, the quick-assembly telescopic device of this embodiment also includes two protective plates 70 made of stainless steel. The two protective plates 70 are respectively arranged below the two telescopic base plates 30. Specifically, the ends of the two protective plates 70 facing away from each other are fixedly connected to the lower surfaces of the two telescopic base plates 30 by connecting screws. The ends of the two protective plates 70 facing toward each other overlap, thereby sealing the gap between the two telescopic base plates 30 and blocking debris. This prevents road debris from passing through the gap between the two telescopic base plates 30 and entering the drainage mechanism below.

[0037] Furthermore, if Figure 1 and Figure 2 As shown, the quick-assembly telescopic device of this embodiment also includes a water guide trough 80, which is arranged between the two sections of the beam body 50 along the width direction of the beam body 50, and the two side edges of the water guide trough 80 are correspondingly connected to the two opposite side edges of the two embedded steel plates 13; the cross-section of the water guide trough 80 is an arc-shaped structure, which can quickly collect rainwater; a leakage port 81 is provided below the water guide trough 80, and the leakage port 81 is connected to the drainage pipe on the bridge pier; the water guide trough 80 can collect the water flowing down the gap between the two telescopic base plates 30 according to the slope of the bridge and guide it to the drainage pipe through the leakage port 81 and finally drain the rainwater on the bridge deck, thereby preventing water accumulation and greatly improving the service life of the telescopic device.

[0038] Furthermore, if Figure 1 As shown, the quick-assembly telescopic device also includes noise-reducing concrete 90, which is poured between the anchor base 20 and the groove cut in the asphalt pavement layer 60. The noise-reducing concrete 90 has elasticity after solidification, and plays a role in stabilizing the anchor base 20 and filling the excess gaps in the step groove structure, while effectively reducing the noise generated during driving.

[0039] A second embodiment of the present invention provides a method for installing and constructing a telescopic device. The method is used for the quick-assembly telescopic device of the above embodiment. The method specifically comprises the following steps:

[0040] S102: Figure 4 As shown, the embedded parts 10 are embedded in the ends of the beams 50 of the bridge in advance, and the transverse ribs 11, the longitudinal ribs 12 and the embedded steel plates 13 are welded into a whole before embedding; if there is a height difference between the multiple sections of the beams 50 in the vertical direction, the top surface of the beam 50 with the highest height is used as the reference surface for embedding the embedded parts 10; if there is an unevenness problem between the beam end surfaces of the beams 50, the minimum beam end distance between the two adjacent sections of the beams 50 is used as the reference distance for embedding the embedded parts 10; there is no need to correct the errors of the beam top surface and the beam end side during construction, which effectively expands the application range and improves construction efficiency.

[0041] S104: Figure 5 and Figure 6 As shown, after the embedded components 10 are installed, an asphalt paving layer 60 is laid on the beam 50. A notch is created at the position where the asphalt paving layer 60 faces the embedded components 10, creating a stepped groove structure between the end of the asphalt paving layer 60 and the end of the beam 50, exposing the top surface of the embedded steel plate 13 of the embedded components 10. There is no need to block traffic during the asphalt paving layer 60 laying process, and preparations can be made for the construction site later based on the construction schedule. During the grooving process, the equipment is prepared, and after entering the site, the groove is laid out and inspected and cleared of debris, exposing the top surface of the embedded steel plate 13.

[0042] S106: If Figure 7 As shown, an anchoring base 20 is installed on the top surface of the embedded part 10 and a water guide trough 80 is installed between two adjacent beam sections 50; optionally, the anchoring base 20 can be directly welded to the embedded steel plate 13 of the embedded part 10 by welding, and the spacing between the two anchoring bases 20 needs to be determined according to the size of the expansion joint between the two telescopic base plates 30 to ensure that the size of the expansion joint is at an appropriate distance; the two sides of the water guide trough 80 avoid corresponding connections with the two embedded steel plates 13.

[0043] S108: Figure 8 As shown, according to the height difference between the two sections of the beam 50, leveling pads 22 of different heights are placed in the limiting grooves 21 of the two anchor bases 20 and compacted. The height difference between the leveling pads 22 of the two anchor bases 20 is equal to the height difference between the two sections of the beam 50. The limiting protrusions 31 of the two telescopic base plates 30 to be installed are respectively inserted into the corresponding limiting grooves 21 and pressed against the leveling pads 22, so that the heights of the upper surfaces of the two adjacent telescopic base plates 30 are leveled and flush with the upper surface of the asphalt pavement layer 60. The toothed structures at the ends of the two telescopic base plates 30 are staggered with each other, and the two telescopic base plates 30 are fastened to the two sets of anchor bases 20 by multiple locking bolts 40.

[0044] S110: Figure 9 As shown, noise reduction concrete 90 is poured into the gap between the anchor base 20 and the asphalt pavement 60 and flushed with the asphalt pavement 60. After the noise reduction concrete 90 solidifies, the installation is completed. Traffic can be opened after 2 to 3 hours.

[0045] The present invention mainly solves the problems of slow installation and replacement of conventional expansion joint devices and inability to quickly adjust the level and height. It has the following advantages:

[0046] (1) Quick assembly: The embedded parts 10 are integrally manufactured and embedded in the beam 50 or the abutment in advance. The telescopic base plate 30 and the anchor base 20 are mechanically assembled, and installation and subsequent replacement are quick and convenient.

[0047] (2) Rapid leveling: An adjustment gap is left between the telescopic base 30 and the anchor base 20 in the vertical direction. A leveling pad 22 can be poured into the anchor base 20 as needed to achieve the height adjustment of the telescopic base 30. The adjustment range is large, which greatly improves the leveling accuracy and speed.

[0048] (3) Eliminating the influence of uneven end faces and horizontal surfaces of the beam body 50: Since the embedded parts 10 have been pre-embedded in advance, the anchor base 20 can be pre-adjusted in the longitudinal direction of the bridge according to the size of the slot and then fixed during the later installation, and the leveling of the telescopic base plate 30 only needs to be operated in the vertical direction, thereby greatly eliminating the influence of uneven end faces of the beam body 50 and height differences in the horizontal surface.

[0049] (4) Quick replacement: The telescopic base plate 30 and the anchor base 20 are connected in a unitary detachable manner, and can be repaired and replaced without closing the traffic.

[0050] (5) Excellent noise reduction performance: The special wave-shaped structure of the toothed structure of the telescopic base plate 30 was determined through dynamic simulation and a large number of noise experiments, providing a continuous support surface for driving. The poured noise reduction concrete 90 has elasticity, which greatly reduces the impact noise, thereby achieving the optimal noise reduction effect and making driving very smooth and comfortable.

[0051] (6) The vibration reduction effect is obvious: the leveling pad 22 provided in the anchor base 20 makes the telescopic device as a whole a flexible structure, which greatly reduces the vibration of the beam end.

[0052] (7) Excellent mechanical properties: The upper surface of the telescopic base 30 and the two limiting protrusions 31 form a double T-shaped structure, which is inserted into the limiting groove 21 of the anchor base 20. The high-strength anti-loosening locking bolts 40 on the telescopic base 30 are pressed tightly, effectively preventing the telescopic base 30 from moving laterally. The limiting protrusions 31 of the telescopic base 30 and the limiting groove 21 of the anchor base 20 are precisely matched to withstand the main bending moment and prevent the telescopic base 30 from jumping vertically. The high-strength locking bolts 40 will not loosen during use, making it safe, reliable, fatigue-resistant, and long-lasting.

[0053] (8) Excellent tensile and anchoring performance: It has tensile structures in both longitudinal and transverse directions during expansion and contraction, providing overall tensile and anchoring performance.

[0054] (9) The protective plate 70 provided at the bottom of the telescopic base plate 30 is made of stainless steel. This is hard stainless steel that can resist sharp debris and protect the lower waterproof system. It has high waterproofness and better durability of the waterproof system, thus solving the problem of being unable to discharge slag.

[0055] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A quick-assembly telescopic device, characterized in that: The quick-assembly telescopic device is applied between two adjacent sections of a bridge beam (50), an asphalt pavement layer (60) is laid on the two sections of the beam (50), and a notch is opened at the end of the asphalt pavement layer (60) so as to form a step groove structure between the end of the asphalt pavement layer (60) and the end of the beam (50); the quick-assembly telescopic device comprises: Embedded parts (10), the embedded parts (10) are in two groups, and the two groups of embedded parts (10) are correspondingly embedded inside the two sections of the beam body (50) and correspond to the two step groove structures in the upper and lower directions; Anchoring bases (20), the anchoring bases (20) are in two groups, the two groups of anchoring bases (20) are fixedly mounted on the two groups of embedded parts (10) respectively, and the top of the anchoring base (20) is provided with a plurality of limiting grooves (21) extending inwardly in a vertical direction; A telescopic base plate (30), wherein the telescopic base plate (30) is composed of two pieces, and the two telescopic base plates (30) are connected to the two sets of anchoring bases (20) in a vertical direction in a height-adjustable manner; a rear end lower portion of the telescopic base plate (30) is provided with a plurality of limiting protrusions (31), and the plurality of limiting protrusions (31) correspond to and match the plurality of limiting grooves (21) in a one-to-one manner; A protective plate (70), wherein the protective plate (70) is in two pieces, and the two protective plates (70) are correspondingly arranged below the two telescopic base plates (30); the ends of the two protective plates (70) that are away from each other are fixedly connected to the lower surfaces of the two telescopic base plates (30) via connecting screws, and the ends of the two protective plates (70) that are close to each other overlap each other; the two protective plates (70) are used to close the gap between the two telescopic base plates (30); wherein each of the limiting grooves (21) and each of the limiting protrusions (31) extends along the width direction of the beam body (50), and a plurality of the limiting grooves (21) and a plurality of the limiting protrusions (31) are evenly spaced along the length direction of the beam body (50); a plurality of the limiting protrusions (31) are telescopically embedded in a plurality of the limiting grooves (21) to adjust the height of the telescopic base plate (30) in the vertical direction; a locking bolt (40) is located between two adjacent limiting grooves (21); the upper surfaces of the two telescopic base plates (30) are respectively adjusted to be flush with the upper surface of the asphalt pavement layer (60) and the ends of the two telescopic base plates (30) are opposite to each other and are fastened to the two groups of the anchor bases (20) through the locking bolts (40); A leveling pad (22) is provided at the bottom of the limiting groove (21), and the lower end of the limiting protrusion (31) is embedded in the limiting groove (21) and abuts against the leveling pad (22) to adjust the telescopic base plate (30) to a predetermined height in the vertical direction; the leveling pad (22) is a flexible structure.

2. The quick-assembly telescopic device according to claim 1, characterized in that: The embedded part (10) comprises: transverse ribs (11), there are two transverse ribs (11), the two transverse ribs (11) extend along the width direction of the beam body (50) and are embedded in the beam body (50); Longitudinal ribs (12), the longitudinal ribs (12) being multiple, the multiple longitudinal ribs (12) being spaced apart along the width direction of the beam body (50) and welded together with the two transverse ribs (11); An embedded steel plate (13), wherein the length direction of the embedded steel plate (13) extends along the width direction of the beam body (50), and the embedded steel plate (13) and the plurality of longitudinal ribs (12) are welded together; Wherein, the anchoring base (20) is fixedly mounted on the embedded steel plate (13).

3. The quick-assembly telescopic device according to claim 2, characterized in that: The longitudinal ribs (12) are of a "door"-shaped structure, the upper surface of the embedded steel plate (13) is flush with the upper surface of the beam body (50), and the opposite sides of the two embedded steel plates (13) are respectively flush with the ends of the two sections of the beam body (50).

4. The quick-assembly telescopic device according to claim 1, characterized in that: The two opposite side edges of the two telescopic base plates (30) are tooth-shaped structures that extend continuously along the width direction of the beam body (50); and the tooth-shaped structures of the two telescopic base plates (30) are arranged in an interlaced manner.

5. The quick-assembly telescopic device according to claim 1, characterized in that: The quick-assembly telescopic device also includes: A water guide groove (80), the water guide groove (80) is arranged between two sections of the beam body (50) along the width direction of the beam body (50), and both side edges of the water guide groove (80) are correspondingly connected to the end walls of the two sections of the beam body (50); a water leakage port (81) is provided below the water guide groove (80); The water guide groove (80) is used to collect water flowing down from the gap between the two telescopic base plates (30) and guide it to a predetermined position through the water leakage port (81).

6. A telescopic device installation construction method, characterized in that: The telescopic device installation and construction method is used for the quick-assembly telescopic device according to any one of claims 1 to 5; the telescopic device installation and construction method comprises: The embedded parts (10) are embedded in advance at the ends of the beams (50) of the bridge; if there is a height difference between the multiple sections of the beams (50) in the vertical direction, the top surface of the beam (50) with the highest height is used as the reference surface for embedding the embedded parts (10); if there is an unevenness problem between the beam end surfaces of the beams (50), the minimum beam end distance between two adjacent sections of the beams (50) is used as the reference distance for embedding the embedded parts (10); Spreading an asphalt pavement layer (60) on the beam body (50); A notch is provided at a position where the asphalt pavement layer (60) and the embedded part (10) are opposite to each other so that a step groove structure is formed between the end of the asphalt pavement layer (60) and the end of the beam body (50) and the top surface of the embedded part (10) is exposed; An anchoring base (20) is installed on the top surface of the embedded part (10), and a water guide groove (80) is installed between two adjacent sections of the beam body (50); Adjusting the heights of the upper surfaces of the two adjacent telescopic base plates (30) to be flush with the upper surface of the asphalt pavement layer (60) and with the ends of the two telescopic base plates (30) facing each other, and then fastening the two telescopic base plates (30) to the two sets of anchor bases (20) by means of locking bolts (40); Noise reduction concrete (90) is poured between the anchor base (20) and the asphalt pavement layer (60) and flush with the asphalt pavement layer (60). The installation is completed after the noise reduction concrete (90) solidifies.

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