Telescopic adjusting device of beam-track integrated track assembly for maglev traffic

Abstract

The invention discloses a telescopic adjusting device of a beam-track integrated track assembly for maglev traffic, the beam-track integrated track assembly comprises an integrated beam, an induction plate and an inverted U-shaped track, and the telescopic adjusting device is arranged at the joint of the integrated beam. Comprising an induction plate sliding block movably arranged between the induction plates and a rail sliding block movably arranged between the inverted-U-shaped rails, and the induction plate sliding block and the rail sliding block are arranged on the top face and the bottom face of the integrated beam joint in a longitudinal limiting and sliding mode relative to an upper sliding limiting block and a lower sliding limiting block correspondingly. The upper sliding limiting block and the lower sliding limiting block are fixedly arranged on the top face and the bottom face of the integrated beam respectively. Telescopic displacement is achieved through sliding of the induction plate sliding block and the rail sliding block relative to the beam body, and the telescopic adjustment problem caused by temperature changes and the like of a beam-rail integrated rail assembly in the prior art can be solved.

Description

Technical Field

[0001] This invention belongs to the field of maglev rail transit, and particularly relates to a telescopic adjustment device for rail transit. Background Technology

[0002] Most existing medium- and low-speed maglev rail transit systems are constructed using elevated tracks, with track structures including track beams, rail supports, and track panels. The track panels are mounted on the track beams via rail supports and consist of steel sleepers, F-shaped steel sections, and aluminum linear motor induction plates. Because the track beams and track panels are designed separately, the overall structure is complex, requiring high installation precision and increasing the overall track structure's clearance dimensions, thus raising construction costs. Furthermore, the F-shaped steel sections within the track panel structure, due to their irregular cross-sections, require specialized processing equipment, resulting in high manufacturing difficulty and cost. During line operation, the complex track structure increases the difficulty of commissioning and maintenance.

[0003] In view of the above, an integrated beam-track assembly for maglev transportation tracks has been designed. This track assembly combines the bridge structure and the track structure into one, eliminating the steel sleeper section and adopting the form of a bridge top plate or cantilever plate. The original F-shaped steel is replaced by an induction plate on the top surface of the top plate or cantilever plate and an inverted U-shaped track on the bottom surface, forming a new running track structure for maglev trains.

[0004] This type of track assembly structure is simpler to construct, requires fewer construction steps, and has a lower project cost. However, this new integrated beam-rail track assembly faces the challenge of adjusting for expansion and contraction due to factors such as temperature changes. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a telescopic adjustment device for an integrated beam-rail track assembly of maglev transportation, which can be used to solve the telescopic adjustment problem caused by temperature changes and other issues in the existing integrated beam-rail track assembly.

[0006] To solve the above-mentioned technical problems, the technical solution proposed by this invention is as follows:

[0007] A telescopic adjustment device for an integrated beam-track assembly of a maglev transportation system is disclosed. The integrated beam-track assembly includes an integrated beam, an induction plate, and an inverted U-shaped track. The integrated beam includes a beam body and cantilever plates on both sides of the top surface of the beam body. The induction plate is located on the top surface of the cantilever plate, and the inverted U-shaped track is located on the bottom surface of the cantilever plate. The telescopic adjustment device is located at the joint of the integrated beam and includes an induction plate sliding block movably disposed between the induction plates and a track sliding block movably disposed between the inverted U-shaped track. The induction plate sliding block and the track sliding block are respectively longitudinally limited and slidably disposed on the top and bottom surfaces of the joint of the integrated beam relative to an upper sliding limit block and a lower sliding limit block, respectively. The upper sliding limit block and the lower sliding limit block are respectively fixedly disposed on the top and bottom surfaces of the integrated beam.

[0008] In the above-mentioned telescopic adjustment device, preferably, the sensing plate is disconnected at the joint of the integrated beam, one end of the sensing plate sliding block is provided with a T-shaped boss, and the other end is provided with a T-shaped groove. The groove length k of the T-shaped groove is greater than the head length h of the T-shaped boss. The disconnected sensing plate is also provided with a T-shaped boss or a T-shaped groove. The two ends of the sensing plate sliding block are nested and overlapped with the disconnected sensing plate through the T-shaped boss and the T-shaped groove, respectively.

[0009] In the above-mentioned telescopic adjustment device, preferably, the induction plate sliding block is provided in multiple pieces, and the multiple induction plate sliding blocks are nested and overlapped by the T-shaped boss and the T-shaped groove.

[0010] In the above-mentioned telescopic adjustment device, preferably, the inverted U-shaped track is broken at the joint of the integrated beam, one end of the track sliding block is provided with a T-shaped boss, and the other end is provided with a T-shaped groove. The groove length k of the T-shaped groove is greater than the head length h of the T-shaped boss. The broken inverted U-shaped track is also provided with a T-shaped boss or a T-shaped groove. The two ends of the track sliding block are nested and overlapped with the broken inverted U-shaped track through the T-shaped boss and the T-shaped groove, respectively.

[0011] In the above-mentioned telescopic adjustment device, preferably, each of the track sliding blocks is provided with multiple blocks, and the multiple track sliding blocks are nested and overlapped by the T-shaped boss and the T-shaped groove.

[0012] In the above-mentioned telescopic adjustment device, preferably, the upper sliding limit block and the lower sliding limit block are fixed to the top and bottom surfaces of the integrated beam by a tie rod. The tie rod includes a fixing nut rod and a pair of fixing bolts. The fixing nut rod passes through the integrated beam, and the pair of fixing bolts are located on the top surface of the upper sliding limit block and the bottom surface of the lower sliding limit block, respectively, and are fixedly connected to the fixing nut rod.

[0013] In the above-mentioned telescopic adjustment device, preferably, the upper sliding limit block and the lower sliding limit block are fixed to the top and bottom surfaces of the integrated beam by a pair of tie rods. Both the upper sliding limit block and the lower sliding limit block are provided with stepped holes for accommodating the fixing bolts. The surface of the fixing bolts is not higher than the surface of the upper sliding limit block or the surface of the lower sliding limit block.

[0014] In the above-mentioned telescopic adjustment device, preferably, both the induction plate sliding block and the track sliding block are provided with waist-shaped holes parallel to the length direction of the integrated beam, and both the upper sliding limit block and the lower sliding limit block are waist-shaped strips with a length less than the waist-shaped hole. Both the induction plate sliding block and the track sliding block are slidably arranged relative to the waist-shaped strip through the waist-shaped hole.

[0015] In the above-mentioned telescopic adjustment device, preferably, both the induction plate sliding block and the track sliding block are provided with a pair of waist-shaped holes, the waist-shaped holes are provided with steps, the waist-shaped strip is in the shape of a step that matches the waist-shaped holes, and the surface of the waist-shaped strip is flush with the surface of the induction plate sliding block or the surface of the track sliding block.

[0016] Preferably, in the above-mentioned telescopic adjustment device, a self-lubricating material layer is provided between the induction plate sliding block and the integrated beam, and between the induction plate sliding block and the upper sliding limit block; a self-lubricating material layer is provided between the track sliding block and the integrated beam, and between the track sliding block and the lower sliding limit block.

[0017] Traditional maglev track telescopic adjustment devices are fixedly connected to the beam at both ends. They mainly adapt to the expansion and contraction requirements at the bridge joints by the relative deformation of the telescopic adjustment device itself. There is no relative displacement between the two ends of the telescopic adjustment device and the bridge. This type of telescopic adjustment device requires a deep and wide installation groove area to be set on the beam. The beam plate of the integrated beam-rail bridge track is relatively thin and cannot be made into an installation groove. Therefore, traditional telescopic adjustment devices are not suitable for integrated beam-rail track assemblies.

[0018] To address the issue of expansion and contraction adjustment caused by temperature variations in novel integrated beam-track assemblies, this invention proposes an expansion and contraction adjustment device for integrated beam-track assemblies in maglev transportation. This device utilizes a sensor plate sliding block and a track sliding block to resolve displacement caused by temperature expansion and contraction. The sensor plate sliding block and track sliding block mentioned in this invention are constrained vertically and laterally by an upper sliding limit block and a lower sliding limit block. The upper and lower sliding limit blocks are fixed by fixing bolts and fixing nut rods, which are cast into the beam wall. This solution ensures that the upper surface of the sensor plate sliding block is flush with the original sensor plate, and the structure of the track sliding block remains consistent with the original track structure. It does not alter the overall structure and function of the track assembly, and achieves expansion and contraction adjustment simply and efficiently.

[0019] In the specific design, the induction plate and the inverted U-shaped track are disconnected near the beam joint. Several induction plate sliding blocks and track sliding blocks are installed, with their ends nested and overlapping with the original induction plate and inverted U-shaped track. One of the induction plate sliding blocks and track sliding blocks spans the beam joint, ensuring continuity at the beam joint and bearing the vehicle load. The multiple induction plate sliding blocks and track sliding blocks are horizontally nested. This structure helps to mitigate bridge temperature deformation and prevents excessive gaps between adjacent blocks, which could affect train smoothness and driving safety. The gap of a single nested structure can accommodate ±10mm to ±20mm of beam end expansion and contraction displacement. Multiple blocks combined can accommodate different temperature displacement requirements of the bridge. Vertically, each induction plate sliding block and track sliding block is limited by upper and lower sliding limit blocks to ensure the upper surface of the induction plate is flat and consistent, without altering the inverted U-shaped structure of the track or affecting the magnetic field and braking functions of the maglev train. Each induction plate sliding block and track sliding block is fixed to the upper and lower sides of the cantilever plate of the integrated beam by the fixing bolts and fixing nut rods of the upper and lower sliding limit blocks. The fixing nut rods are cast into the integrated beam. Together with the fixing bolts, the fixing nut rods can simultaneously fix the upper sliding limit blocks and the lower sliding limit blocks. That is, the upper and lower sliding limit blocks, fixing bolts, and fixing nut rods are all relatively stationary with respect to the integrated beam, while the induction plate sliding blocks and track sliding blocks have longitudinal sliding with respect to the integrated beam. The upper and lower sliding limit blocks only allow the induction plate sliding blocks and track sliding blocks to slide longitudinally along the track, thereby realizing telescopic adjustment.

[0020] The telescopic adjustment device of the integrated beam-track assembly for maglev transportation of the present invention has at least the following advantages: 1. It has the connection and adjustment capability of conventional joints in integrated beam-track maglev transportation, with good adaptability. 2. The sliding blocks adopt a nested structure, ensuring stable force transmission and preventing beam drop. 3. Longitudinal sliding adjustment is achieved by using sliding blocks and sliding limit blocks, resulting in a simple structure and low cost. 4. The upper and lower sliding limit blocks are simultaneously fixed by fixing bolts using fixed nut rods, resulting in a compact structure and convenient installation. 5. The fixed nut rods are positioned by pre-embedded steel plates, ensuring high relative positional accuracy and good installation fit between the fixed nut rods. 6. The upper surface of the induction plate sliding block and the lower surface of the track sliding block are flush with the original structure, without affecting the magnetic field and braking functions of the maglev train. 7. High-polymer self-lubricating materials are provided between the induction plate sliding block and the track sliding block and the integrated beam, and between the induction plate sliding block and the track sliding block and the sliding limit block, which can adapt to the slight rotation of the beam under external loads and reduce the bridge's expansion resistance.

[0021] Compared with the prior art, the advantages of the present invention are as follows: The telescopic adjustment device for the integrated beam-track assembly of maglev transportation of the present invention achieves telescopic displacement by sliding the induction plate sliding block and the track sliding block relative to the beam body. This can solve the telescopic adjustment problem caused by temperature changes in existing integrated beam-track assemblies. The induction plate sliding block and the track sliding block are limited by upper and lower sliding limit blocks. After installation, the top surface of the telescopic adjustment device is flush with the original induction plate and inverted U-shaped track, causing no disturbance to the integrated beam-track structure. Moreover, the telescopic adjustment device can also be integrated into the original induction plate and inverted U-shaped track, resulting in minimal cost increase, good economic efficiency, and no impact on the original track structure, demonstrating good integration. This telescopic adjustment device of the present invention is completely different from traditional bridge telescopic adjustment devices and is particularly suitable for the integrated beam-track assembly of the present invention. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a three-dimensional model of the telescopic adjustment device of the integrated beam-rail track assembly in the embodiment of maglev transportation.

[0024] Figure 2 This is a top view of the telescopic adjustment device of the integrated beam-track assembly of the maglev transportation system in the embodiment.

[0025] Figure 3 This is a bottom view of the telescopic adjustment device of the integrated beam-track assembly of the maglev transportation system in the embodiment.

[0026] Figure 4 This is a schematic diagram of the end face of the telescopic adjustment device of the integrated beam-rail track assembly of the maglev transportation system in the embodiment.

[0027] Figure 5 for Figure 4 This is a magnified view of a portion of point A.

[0028] Figure 6 This is a top view of the sliding block of the sensing plate in the embodiment.

[0029] Figure 7 This is a cross-sectional schematic diagram of the sliding block of the sensing plate in the embodiment.

[0030] Figure 8 This is a schematic diagram of the upper sliding limit block in the embodiment.

[0031] Figure 9This is a cross-sectional schematic diagram of the upper sliding limit block in the embodiment.

[0032] Legend 1. Integrated beam; 101. Beam body; 102. Cantilever plate; 2. Induction plate; 3. Inverted U-shaped track; 4. Induction plate sliding block; 5. Track sliding block; 6. Upper sliding limit block; 7. Lower sliding limit block; 8. T-shaped boss; 9. T-shaped groove; 10. Fixing nut rod; 11. Fixing bolt; 12. Waist-shaped hole; 13. Self-lubricating material layer. Detailed Implementation

[0033] To facilitate understanding of the present invention, the present invention will be described more fully and in detail below with reference to the accompanying drawings and preferred embodiments, but the scope of protection of the present invention is not limited to the following specific embodiments.

[0034] It should be noted that when a component is described as being "fixed to, attached to, connected to or connected to" another component, it can be directly fixed to, attached to, connected to or connected to the other component, or it can be indirectly fixed to, attached to, connected to or connected to the other component through other intermediate connectors.

[0035] Unless otherwise defined, all technical terms used herein have the same meaning as commonly understood by those skilled in the art. The technical terms used herein are for the purpose of describing particular embodiments only and are not intended to limit the scope of the invention.

[0036] Example: like Figures 1-5 As shown, the telescopic adjustment device of the integrated beam-track assembly for maglev transportation in this embodiment includes an integrated beam 1, an induction plate 2, and an inverted U-shaped track 3. The integrated beam 1 includes a beam body 101 and cantilever plates 102 disposed on both sides of the top surface of the beam body 101. The induction plate 2 is disposed on the top surface of the cantilever plate 102, and the inverted U-shaped track 3 is disposed on the bottom surface of the cantilever plate 102. The telescopic adjustment device is disposed at the joint of the integrated beam 1 and includes an induction plate sliding block 4 movably disposed between the induction plates 2 and a sliding block 4 movably disposed between the inverted U-shaped track 3. The track sliding block 5, the sensing plate sliding block 4, and the track sliding block 5 are respectively longitudinally limited and slidably disposed on the top surface (top surface of cantilever plate 102) and bottom surface (bottom surface of cantilever plate 102) of the joint of the integrated beam 1 relative to the upper sliding limit block 6 and the lower sliding limit block 7. The upper sliding limit block 6 and the lower sliding limit block 7 are respectively fixedly disposed on the top surface and bottom surface of the integrated beam 1. The sensing plate sliding block 4 and the track sliding block 5 are respectively pressed against the top surface and bottom surface of the cantilever plate 102 by the upper sliding limit block 6 and the lower sliding limit block 7 to prevent vertical displacement.

[0037] like Figure 2As shown, in this embodiment, the sensing plate 2 is broken at the joint of the integrated beam 1. One end of the sensing plate sliding block 4 is provided with a T-shaped boss 8, and the other end is provided with a T-shaped groove 9. The groove length k of the T-shaped groove 9 is greater than the platform length h of the T-shaped boss 8. The broken sensing plate 2 is also provided with a T-shaped boss 8 or a T-shaped groove 9. There are multiple sensing plate sliding blocks 4 (three are shown in this embodiment). The multiple sensing plate sliding blocks 4 are nested and overlapped with each other by the T-shaped boss 8 and the T-shaped groove 9. The two ends of the multiple sensing plate sliding blocks 4 are nested and overlapped with the broken sensing plate 2 by the T-shaped boss 8 and the T-shaped groove 9, respectively. The shape of the above-mentioned sensing plate sliding block 4 is similar to that of the sensing plate 2, for example, the width and thickness are the same, so as to ensure that the sensing plate sliding block 4 and the sensing plate 2 can be a flush whole after nesting and overlapping. The above configuration is equivalent to having a T-shaped protrusion 8 at one end and a T-shaped groove 9 at the other end of the disconnected sensor plate 2. Multiple sensor plate sliding blocks 4 are nested and overlapped in pairs through the T-shaped protrusion 8 and T-shaped groove 9. One end is a T-shaped protrusion 8 and the other end is a T-shaped groove 9, which can be nested and overlapped with the T-shaped groove 9 and T-shaped protrusion 8 at the disconnected sensor plate 2, thus forming a movable whole. When the integrated beam 1 shrinks or expands due to temperature changes, the sensor plate sliding blocks 4 slide relative to the integrated beam 1. The gaps between the multiple nested and overlapped sensor plate sliding blocks 4 through the T-shaped protrusion 8 and T-shaped groove 9 make the overall length between the multiple nested and overlapped sensor plate sliding blocks 4 decrease or increase, so as to match the shrinkage or expansion of the integrated beam 1, thereby realizing the telescopic adjustment function.

[0038] like Figure 3 As shown, in this embodiment, the inverted U-shaped track 3 is broken at the joint of the integrated beam 1. One end of the track sliding block 5 is provided with a T-shaped boss 8, and the other end is provided with a T-shaped groove 9. The groove length k of the T-shaped groove 9 is greater than the platform length h of the T-shaped boss 8. The broken inverted U-shaped track 3 is also provided with a T-shaped boss 8 or a T-shaped groove 9. There are multiple track sliding blocks 5 (three are shown in this embodiment). The multiple track sliding blocks 5 are nested and overlapped with each other by the T-shaped boss 8 and the T-shaped groove 9. The two ends of the multiple track sliding blocks 5 are nested and overlapped with the broken inverted U-shaped track 3 by the T-shaped boss 8 and the T-shaped groove 9, respectively. The shape of the track sliding block 5 is similar to that of the inverted U-shaped track 3. For example, the width, thickness, and height are all the same to ensure that the track sliding block 5 and the inverted U-shaped track 3 can be a flush whole after nesting and overlapping. The installation method of the track sliding block 5, the nesting and overlapping method of the inverted U-shaped track 3, and the telescopic adjustment mechanism of the track sliding block 5 are all similar to those of the induction plate sliding block 4.

[0039] like Figure 4 , Figure 5As shown, in this embodiment, the upper sliding limit block 6 and the lower sliding limit block 7 are fixed to the top and bottom surfaces of the cantilever plate 102 of the integrated beam 1 by a pair of tie rods. The tie rods include a fixing nut rod 10 and a pair of fixing bolts 11. The fixing nut rod 10 passes through the integrated beam 1, and the pair of fixing bolts 11 are located on the top surface of the upper sliding limit block 6 and the bottom surface of the lower sliding limit block 7, respectively, and are fixedly connected to the fixing nut rod 10. The fixing nut rod 10 is embedded in the integrated beam 1, and the relative position of each fixing nut rod 10 is controlled by the embedded parts to ensure the accuracy of the installation position. Both the upper sliding limit block 6 and the lower sliding limit block 7 have stepped holes for accommodating the fixing bolts 11. The surface of the fixing bolts 11 is flush with the surface of the upper sliding limit block 6 or the lower sliding limit block 7 to avoid the fixing bolts 11 protruding, which will not affect the magnetic field and braking functions of the maglev train, and will not affect the operation of the maglev train. The above configuration means that each upper sliding limit block 6 and lower sliding limit block 7 is fixed to the top and bottom surfaces of the cantilever plate 102 respectively by a pair of spaced-apart tie rods. The upper sliding limit block 6 and lower sliding limit block 7 move synchronously with the integrated beam 1, respectively pressing and limiting the sliding block 4 of the induction plate and the sliding block 5 of the track. To prevent the fixing bolts 11 from loosening during operation, the heads of the fixing bolts 11 can be provided with anti-rotation pins, which can effectively prevent the fixing bolts 11 from loosening.

[0040] like Figures 6-9 As shown, in this embodiment, both the induction plate sliding block 4 and the track sliding block 5 have a pair of oblong holes 12 parallel to the length direction of the integrated beam 1. These holes are spaced apart in parallel. The upper sliding limit block 6 and the lower sliding limit block 7 are both oblong strips with a length less than the oblong holes 12. Both the induction plate sliding block 4 and the track sliding block 5 slide relative to the oblong strips through the oblong holes 12. The oblong holes 12 have steps, and the oblong strips are stepped to match the oblong holes 12. The surface of the oblong strips is flush with the surface of the induction plate sliding block 4 or the track sliding block 5 to prevent the oblong strips from protruding and affecting the operation of the maglev train. The above configuration is equivalent to each sensor plate sliding block 4 being pressed against the top surface of the cantilever plate 102 by a pair of upper sliding limit blocks 6, and each track sliding block 5 being pressed against the bottom surface of the cantilever plate 102 by a pair of lower sliding limit blocks 7, thereby vertically and laterally limiting the sensor plate sliding block 4 and the track sliding block 5, fixing the sensor plate sliding block 4 and the track sliding block 5 to the upper and lower surfaces of the beam, and preventing the sensor plate sliding block 4 and the track sliding block 5 from lateral deviation and horizontal rotation.

[0041] like Figure 5As shown, in this embodiment, a self-lubricating material layer 13 is provided between the induction plate sliding block 4 and the integrated beam 1, and between the induction plate sliding block 4 and the upper sliding limit block 6; a self-lubricating material layer 13 is also provided between the track sliding block 5 and the integrated beam 1, and between the track sliding block 5 and the lower sliding limit block 7. High-polymer self-lubricating material is provided between the induction plate sliding block 4 and the track sliding block 5 and the integrated beam 1, and between the induction plate sliding block 4 and the track sliding block 5 and the upper sliding limit block 6 and the lower sliding limit block 7. This material has good rigidity and self-lubricating properties, good vertical bearing capacity, can adapt to the small rotation of the beam under external loads, reduce the bridge's expansion and contraction resistance, reduce wear between sliding components, and ensure the normal operation of the bridge structure.

[0042] In this embodiment, the induction plate 2 and the inverted U-shaped track 3 are disconnected near the beam joint, and paired induction plate sliding blocks 4 and track sliding blocks 5 are set. The two ends of the induction plate sliding blocks 4 and track sliding blocks 5 are connected to the original induction plate 2 and inverted U-shaped track 3, respectively. One of the induction plate sliding blocks 4 and track sliding blocks 5 is set across the beam joint to ensure that the induction plate 2 and inverted U-shaped track 3 are continuous at the beam joint and can bear the vehicle load. The horizontal overlap of each induction plate sliding block 4 and track sliding block 5 adopts a nested structure. The gap of a single nested structure can accommodate the beam end expansion and contraction displacement of ±10mm~±20mm. By combining multiple induction plate sliding blocks 4 and track sliding blocks 5, it can adapt to the different temperature displacement requirements of the bridge, while preventing the relative displacement of adjacent induction plate sliding blocks 4 and track sliding blocks 5 from exceeding the limit, which would affect the train's ride smoothness and driving safety. Because a longitudinal sliding gap is provided between the oblong hole 12 of the induction plate sliding block 4 and the track sliding block 5 and the upper sliding limit block 6 and lower sliding limit block 7, which are oblong strips, and this gap is consistent with the gap of the nested structure, the induction plate sliding block 4 and the track sliding block 5 are allowed to slide longitudinally to adapt to the longitudinal temperature displacement of the bridge. In this embodiment, the telescopic displacement is achieved by the sliding of the induction plate sliding block 4 and the track sliding block 5 relative to the beam. This solution is different from the telescopic adjustment device of traditional bridges and can be used to solve the telescopic adjustment problem caused by temperature changes in the existing beam-rail integrated track assembly. It is particularly suitable for the beam-rail integrated track assembly with the specific structure of this embodiment.

Claims

1. A telescopic adjusting device of a beam-rail integrated track assembly of a magnetic levitation transportation, the beam-rail integrated track assembly comprising an integrated beam (1), an induction plate (2) and a reversed U-shaped track (3), the integrated beam (1) comprising a beam body (101) and cantilever plates (102) arranged on both sides of a top surface of the beam body (101), the induction plate (2) being arranged on a top surface of the cantilever plates (102), and the reversed U-shaped track (3) being arranged on a bottom surface of the cantilever plates (102), characterized in that, The telescopic adjustment device is located at the joint of the integrated beam (1) and includes a sensor plate sliding block (4) movably located between the sensor plates (2) and a track sliding block (5) movably located between the inverted U-shaped tracks (3). The sensor plate sliding block (4) and the track sliding block (5) are respectively longitudinally limited and slidably located at the top and bottom surfaces of the joint of the integrated beam (1) relative to the upper sliding limit block (6) and the lower sliding limit block (7). The upper sliding limit block (6) and the lower sliding limit block (7) are respectively fixedly located at the top and bottom surfaces of the integrated beam (1).

2. The telescopic adjustment device of claim 1, wherein, The sensing plate (2) is broken at the joint of the integrated beam (1). One end of the sensing plate sliding block (4) is provided with a T-shaped boss (8) and the other end is provided with a T-shaped groove (9). The groove length k of the T-shaped groove (9) is greater than the platform length h of the T-shaped boss (8). The disconnected sensing plate (2) is also provided with a T-shaped boss (8) or a T-shaped groove (9). The two ends of the sensing plate sliding block (4) are nested and overlapped with the disconnected sensing plate (2) through the T-shaped boss (8) and the T-shaped groove (9) respectively.

3. A telescopic adjustment device according to claim 2, characterised in that, The induction plate sliding block (4) is provided in multiple pieces, and the multiple induction plate sliding blocks (4) are nested and overlapped by the T-shaped boss (8) and the T-shaped groove (9).

4. The telescoping adjustment device of claim 1, wherein, The inverted U-shaped track (3) is broken at the joint of the integrated beam (1). One end of the track sliding block (5) is provided with a T-shaped boss (8) and the other end is provided with a T-shaped groove (9). The groove length k of the T-shaped groove (9) is greater than the platform length h of the T-shaped boss (8). The disconnected inverted U-shaped track (3) is also provided with a T-shaped boss (8) or a T-shaped groove (9). The two ends of the track sliding block (5) are nested and overlapped with the disconnected inverted U-shaped track (3) through the T-shaped boss (8) and the T-shaped groove (9) respectively.

5. A telescopic adjustment device according to claim 4, characterised in that, Each of the track sliding blocks (5) is provided with multiple blocks, and the multiple track sliding blocks (5) are nested and overlapped by the T-shaped boss (8) and the T-shaped groove (9).

6. The telescoping adjustment device of claim 1, wherein, The upper sliding limit block (6) and the lower sliding limit block (7) are fixed to the top and bottom surfaces of the integrated beam (1) by a tie rod. The tie rod includes a fixing nut rod (10) and a pair of fixing bolts (11). The fixing nut rod (10) passes through the integrated beam (1), and the pair of fixing bolts (11) are located on the top surface of the upper sliding limit block (6) and the bottom surface of the lower sliding limit block (7), respectively, and are fixedly connected to the fixing nut rod (10).

7. The telescopic adjustment device according to claim 6, characterized in that, The upper sliding limit block (6) and the lower sliding limit block (7) are fixed to the top and bottom surfaces of the integrated beam (1) by a pair of tie rods. The upper sliding limit block (6) and the lower sliding limit block (7) are provided with stepped holes for accommodating the fixing bolt (11). The surface of the fixing bolt (11) is not higher than the surface of the upper sliding limit block (6) or the surface of the lower sliding limit block (7).

8. The telescopic adjustment device according to claim 1, characterized in that, Both the induction plate sliding block (4) and the track sliding block (5) are provided with waist-shaped holes (12) parallel to the length direction of the integrated beam (1). The upper sliding limit block (6) and the lower sliding limit block (7) are both waist-shaped strips with a length less than the waist-shaped hole (12). Both the induction plate sliding block (4) and the track sliding block (5) are slidably arranged relative to the waist-shaped strip through the waist-shaped hole (12).

9. The telescopic adjustment device according to claim 8, characterized in that, Both the induction plate sliding block (4) and the track sliding block (5) are provided with a pair of waist-shaped holes (12). The waist-shaped holes (12) are provided with steps. The waist-shaped strip is in the shape of a step that matches the waist-shaped hole (12). The surface of the waist-shaped strip is flush with the surface of the induction plate sliding block (4) or the surface of the track sliding block (5).

10. The telescopic adjustment device according to claim 1, characterized in that, A self-lubricating material layer (13) is provided between the induction plate sliding block (4) and the integrated beam (1) and between the induction plate sliding block (4) and the upper sliding limit block (6); a self-lubricating material layer (13) is provided between the track sliding block (5) and the integrated beam (1) and between the track sliding block (5) and the lower sliding limit block (7).

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