Railway track maintenance construction apparatus and method

Abstract

The application relates to the technical field of railway tracks, in particular to a railway track maintenance construction equipment and method, which comprises a track vehicle body, mobile wheels are installed at the lower ends of four corners of the track vehicle body, a sliding frame is slidably arranged at one end of the track vehicle body, and a maintenance device is arranged on the sliding frame; the inclination angle of the clamping strips is adjusted by rotating the adjusting rod according to the track slope, the clamping strips jointly clamp the track connection for track alignment, then the replaceable construction tools on the mounting block are used to maintain the track defects, and various track defects can be coped with for construction.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of railway track, in particular to a railway track maintenance construction equipment and method. BACKGROUND

[0002] Railway track is the infrastructure of railway transportation. After a long period of use and wear, it needs to be repaired and replaced regularly. Railway track maintenance construction is the core work to ensure the safety, stability and efficiency of railway transportation. It involves the inspection, maintenance, replacement and adjustment of components such as steel rails, sleepers, ballast and fasteners. It is like a regular physical examination and treatment for the railway system, ensuring that trains can run safely and comfortably at the designed speed.

[0003] Railway track construction equipment is a track transport vehicle used for railway construction. Workers can place construction tools and materials on the track transport vehicle and transport them to the appropriate location for construction work. For example, a railway track construction equipment for hybrid train head and its construction method (CN117449148A) is related to the field of railway track construction technology for hybrid train head. It includes a track transport vehicle body, and a collection assembly is installed on the top of the track transport vehicle body. The collection assembly is used to collect waste slag. When cutting and processing track blocks, a large amount of waste slag is generated, which falls on the construction track and causes safety hazards in the track area. At the same time, it is not convenient for workers to collect and clean the generated waste slag. The above-mentioned prior art installs a collection assembly, which collects the generated waste slag, thereby facilitating workers to handle the generated waste slag and solving the safety hazards in the track area.

[0004] However, the above-mentioned prior art still has some defects when it comes to railway track maintenance construction: 1. The above-mentioned prior art installs a fixing assembly, which can facilitate workers to fix the track blocks and provide convenience for the cutting and processing work of workers. However, it is difficult to position the track when fixing it, which affects the installation and fixation of the track blocks.

[0005] 2. In the process of processing the track blocks, the excess waste slag generated by the track blocks falls into the inside of the loading container under the action of its own gravity, which enables the collection assembly to facilitate workers to collect the waste slag. However, when collecting the waste slag, the four movable blocks need to be fixed, which is a relatively cumbersome preparation process and has room for improvement.

[0006] Based on the above-mentioned points, the existing technology for railway track maintenance construction still has room for improvement. SUMMARY

[0007] In order to solve the above technical problems, the present application provides a railway track maintenance construction equipment and method, using the following technical solutions:

[0008] In the first aspect, the present application provides a railway track maintenance construction equipment, comprising a track vehicle body, a mobile wheel is installed at the lower end of the four corners of the track vehicle body, a sliding frame is slidingly arranged at one end of the track vehicle body, and a maintenance device is arranged on the sliding frame.

[0009] Preferably, the maintenance device comprises a sliding groove opened on the side of the sliding frame away from the track vehicle body, a connecting sliding block is slidingly arranged on the sliding groove, an installation frame is arranged on the connecting sliding block, a rotating shaft is rotatably installed on the installation frame, an extension arm is installed on the rotating shaft, an installation block is arranged at the lower end of the extension arm, and a construction tool is detachably installed on the installation block.

[0010] Preferably, the sliding frame is provided with a positioning device at both ends, the positioning device comprises installation grooves opened on both sides of the lower end of the sliding frame, adjusting screws are rotatably installed on the side walls of the installation grooves, opposite threads are symmetrically arranged on the adjusting screws, one end of the adjusting screw penetrates the side wall of the sliding frame, an adjusting handle is arranged at one end of the adjusting screw, two sliding plates are symmetrically slidingly installed in the installation grooves, and the opposite threads on the adjusting screws engage the two sliding plates.

[0011] Preferably, the positioning device further comprises a clamping element installed at the lower end of the sliding plate, the clamping element comprises clamping arms rotatably installed at the lower end of the two sliding plates, clamping strips are arranged at the lower end of the clamping arms, and a clamping pad is arranged between the two clamping strips.

[0012] Preferably, the positioning device further comprises an angle adjusting assembly, the angle adjusting assembly comprises a fixed block arranged at the middle of the lower end of the sliding frame, an adjusting rod is rotatably installed in the fixed block, the adjusting rod penetrates the sliding plate, and the clamping arms are fixed to the adjusting rod.

[0013] Preferably, installation rings are rotatably installed at the side ends of the two sliding plates on the outside, the installation rings are slidingly connected with the adjusting rod, indicating blocks are arranged at the side ends of the installation rings, and angle scale marks corresponding to the indicating blocks are arranged at the side ends of the sliding plates.

[0014] Preferably, a recovery device is arranged on the side of the track vehicle body facing the sliding frame, the recovery device comprises a negative pressure box arranged inside the side of the track vehicle body facing the sliding frame, a recovery pipe is arranged at the upper end of the negative pressure box and penetrates the side wall of the track vehicle body, an extension hose is connected at the end of the recovery pipe away from the track vehicle body, an installation pipe is arranged at the lower end of the extension hose and is installed on the sliding frame, and a suction cover is connected at the lower end of the installation pipe.

[0015] Preferably, the recovery device further comprises a driving assembly arranged inside the railcar body, the negative pressure box is provided with an air extraction pipe away from the slide frame, and the air extraction pipe penetrates through the bottom of the railcar body away from the negative pressure box, the driving assembly comprises a driving motor mounted in the railcar body, a rotating column is rotatably mounted at the lower end of the upper plate of the railcar body, and the rotating column penetrates into the inside of the air extraction pipe, the upper end of the rotating column is respectively provided with a connecting gear meshing with the output end of the driving motor, and a filter screen is mounted in the air extraction pipe, the lower end of the rotating column is provided with an air extraction fan, and the air extraction fan is located in the vertical section of the air extraction pipe.

[0016] Preferably, the railcar body is provided with a ballast backfilling device away from the slide frame, the ballast backfilling device comprises a collecting frame arranged at the upper end of the railcar body, and the collecting frame is provided with ballast outlets at both sides, and the railcar body is provided with downwardly inclined ballast outlets at both sides.

[0017] Preferably, the ballast backfilling device further comprises a rotating seat rotatably mounted in the collecting frame, the lower end of the rotating seat is connected to the output end of the driving motor, the upper end of the rotating seat is inclined downwardly around the middle part, the upper end of the rotating seat is provided with a mounting column, a plurality of fixed partitions are uniformly arranged around the mounting column, and the side end of the fixed partition away from the mounting column is provided with an anti-pinch partition through a torsional spring.

[0018] In the second aspect, the application further provides a railway track maintenance construction method, and the construction method comprises the following steps:

[0019] S1: moving the railcar body to the construction position on the track, and then sliding the slide frame downwardly, so that the clamping bars are located at both sides of the rail respectively;

[0020] S2: the indication block and the angle ruler help the construction personnel to confirm the inclination angle of the clamping bars, and then rotating the adjusting handle to make the clamping bars jointly clamp the track connection for alignment;

[0021] S3: installing the construction tool on the mounting block, and then welding, cutting, milling and polishing the track through the construction tool on the mounting block to maintain the track according to the track defects;

[0022] S4: adding ballast into the collecting frame, and then starting the driving motor, so that the ballast in the collecting frame falls to both sides of the track through the ballast outlets and the ballast outlets under the action of centrifugal force to supplement the ballast;

[0023] S5: starting the driving motor, and rotating the air extraction fan to extract the air in the negative pressure box, and the iron filings generated in the track construction are collected in the negative pressure box.

[0024] In summary, the application has at least one of the following beneficial technical effects:

[0025] 1. The present application adjusts the inclination angle of the clamping strip by rotating the rail slope adjustment lever, so that the clamping strips jointly clamp the rail joint for alignment, and then uses the replaceable construction tool on the mounting block to repair the track defects, which can deal with various track defects for construction.

[0026] 2. The present application drives the motor to rotate the air extractor to extract the air in the negative pressure box, and the iron filings generated during track construction are collected in the negative pressure box to prevent the iron filings and other construction products from affecting the track repair, and the automatic recovery reduces the construction burden of the construction personnel.

[0027] 3. The present application adds ballast into the collection frame, starts the drive motor to drive the rotating seat to rotate, and the ballast in the collection frame falls to both sides of the track through the ballast outlet and the ballast guide plate under the action of centrifugal force to supplement the ballast, so that the construction does not need to be suspended after repairing the track, realizing seamless connection of the railway repair operation, and reducing the labor cost and safety risk of supplementing the ballast. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 is a structural schematic diagram of the present application.

[0029] Figure 2 is a structural schematic diagram of the present application.

[0030] Figure 3 is a structural schematic diagram of the present application.

[0031] Figure 4 is a structural schematic diagram of the present application.

[0032] Figure 5 is a structural schematic diagram of the present application.

[0033] Figure 6 is a structural schematic diagram of the present application. Figure 5

[0034] Figure 7 is a structural schematic diagram of the present application.

[0035] Figure 8 is a structural schematic diagram of the present application.

[0036] Figure 9 is a structural schematic diagram of the present application.

[0037] Figure 10 is a structural schematic diagram of the present application.

[0038] Figure 11 is a structural schematic diagram of the present application. ​

[0039] BRIEF DESCRIPTION OF DRAWINGS 11, rail car body; 12, mobile wheel; 13, sliding frame; 2, maintenance device; 21, sliding groove; 22, connecting sliding block; 23, mounting frame; 24, rotating shaft; 25, telescopic arm; 26, mounting block; 27, construction tool; 3, positioning device; 31, mounting groove; 32, adjusting screw; 33, adjusting handle; 34, sliding plate; 4, clamping element; 41, clamping arm; 42, clamping strip; 43, clamping pad; 5, angle adjusting assembly; 51, fixed block; 52, adjusting rod; 53, mounting ring; 54, indicating block; 55, angle scale; 6, lifting device; 61, mounting seat; 62, adjusting column; 63, connecting ring; 64, transmission gear; 65, mounting shaft; 66, rotating disc; 67, drive gear; 7, recovery device; 71, negative pressure box; 72, recovery pipe; 73, flexible hose; 74, mounting pipe; 75, adsorption cover; 8, drive assembly; 81, suction pipe; 82, drive motor; 83, rotating column; 84, connecting gear; 85, filter screen; 86, suction fan; 9, ballast backfilling device; 91, collection frame; 92, ballast outlet; 93, ballast outlet guide plate; 94, rotating seat; 95, mounting column; 96, fixed partition; 97, torsional spring; 98, anti-pinch partition. DETAILED DESCRIPTION

[0040] The above description is made in conjunction with the accompanying drawings. Figures 1 to 11 The application is further described in detail.

[0041] The railway track maintenance construction equipment and method can position the tracks, repair defects, recover iron filings generated during track maintenance, and supplement ballast on both sides of the track.

[0042] Reference Figure 1 A railway track maintenance construction equipment includes a rail car body 11, mobile wheels 12 installed at the lower end of the four corners of the rail car body 11, and a sliding frame 13 slidingly arranged at one end of the rail car body 11. When the rail car body 11 is moved to the construction position on the track by the mobile wheels 12, the sliding frame 13 is slid downward, and the device on the sliding frame 13 is used to repair and construct the track.

[0043] Reference Figure 2As shown in the structural schematic view of the maintenance device 2 of the present application, in order to repair the track for the defects, the maintenance device 2 is arranged on the sliding frame 13, the maintenance device 2 comprises a sliding groove 21 arranged on the side of the sliding frame 13 away from the track vehicle body 11, a connecting sliding block 22 is slidably arranged on the sliding groove 21, an installation frame 23 is arranged on the connecting sliding block 22, a rotating shaft 24 is rotatably arranged on the installation frame 23, an extension arm 25 is arranged on the rotating shaft 24, an installation block 26 is arranged on the lower end of the extension arm 25, and a construction tool 27 is detachably arranged on the installation block 26, the extension of the extension arm 25 and the rotation of the rotating shaft 24 ensure that the construction tool 27 can maintain the track from multiple angles.

[0044] When the track vehicle body 11 moves to the construction position on the track, the construction tool 27 required for the track defects is arranged on the installation block 26, then the connecting sliding block 22 is slid in the sliding groove 21, so that the construction tool 27 is slid to the track defects, and then the track is processed by the construction tool 27.

[0045] Reference Figure 3 As shown in the structural schematic view of the positioning device 3 of the present application, due to the defects of the track after long-term use, the track may be separated from the fixing of the bolt, and it is necessary to fix and position it during maintenance, so that it can be normally used after repair, the positioning device 3 is arranged at both ends of the sliding frame 13, the positioning device 3 comprises installation grooves 31 arranged on both sides of the lower end of the sliding frame 13, adjusting screws 32 are rotatably arranged on the side walls of the installation grooves 31, the adjusting screws 32 are symmetrically provided with threads with opposite screw directions, one end of the adjusting screw 32 penetrates through the side wall of the sliding frame 13, an adjusting handle 33 is arranged at one end of the adjusting screw 32, two sliding plates 34 are symmetrically and slidably arranged in the installation grooves 31, the threads with opposite screw directions of the adjusting screw 32 are respectively engaged with the two sliding plates 34, the adjusting handle 33 is rotated to rotate the adjusting screw 32, and then the two sliding plates 34 are close to or away from each other, so that the elements on the sliding plate 34 clamp and fix the track.

[0046] Reference Figure 4 As shown in the structural schematic view of the clamping element 4 of the present application, in order to clamp and fix the elements on the sliding plate 34 to the track, the positioning device 3 further comprises a clamping element 4 arranged on the lower end of the sliding plate 34, the clamping element 4 comprises clamping arms 41 rotatably arranged on the lower end of the sliding plate 34, the clamping arms 41 slide when the sliding plates 34 slide towards or away from each other, clamping strips 42 are arranged at the lower end of the clamping arms 41, clamping pads 43 are arranged between the two clamping strips 42, and the clamping pads 43 prevent the clamping strips 42 from damaging the track when clamping the track.

[0047] Reference Figure 5 And Figure 6As shown in the structural schematic view of the angle adjusting assembly 5 of the present application, when the track is maintained, there may be a certain slope, at which time the clamping strip 42 needs to be inclined to fix the track, the positioning device 3 further comprises an angle adjusting assembly 5, the angle adjusting assembly 5 comprises a fixed block 51 arranged at the middle of the lower end of the sliding frame 13, a regulating rod 52 is rotatably arranged in the fixed block 51, the regulating rod 52 penetrates the sliding plate 34, and the clamping arms 41 are fixed on the regulating rod 52, rotating the regulating rod 52 can make the clamping arms 41 and the clamping rod rotate synchronously to adjust the angle of the clamping strip 42 clamping the track, the outer two sliding plates 34 are rotatably arranged with mounting rings 53, and the mounting rings 53 are slidably connected with the regulating rod 52, when the sliding plate 34 slides, it does not affect the rotation of the regulating rod 52 driving the mounting ring 53, the mounting ring 53 is arranged with an indicating block 54 at the side end, and the sliding plate 34 is arranged with an angle scale mark 55 corresponding to the indicating block 54, the indicating block 54 points to the angle scale mark 55 to determine the angle of the clamping strip 42 at this time.

[0048] When the regulating rod 52 is rotated, the clamping strip 42 rotates to change the angle of the clamping strip 42 clamping the track, and at the same time, the indicating block 54 rotates, at which time the angle of the clamping strip 42 can be determined by the position of the indicating block 54 pointing to the angle scale mark 55.

[0049] Reference Figure 7 As shown in the structural schematic view of the lifting device 6 of the present application, in order to lift the sliding frame 13 before and after the track construction without affecting the movement of the track vehicle body 11, the lifting device 6 is arranged at one end of the sliding frame 13 facing the track vehicle body 11, the lifting device 6 comprises a mounting seat 61 arranged at one end of the sliding frame 13 facing the track vehicle body 11, a regulating column 62 is threadedly connected in the mounting seat 61, and the lower end of the regulating column 62 is rotatably connected to the upper end of the sliding frame 13, when the regulating column 62 rotates, the regulating column 62 moves up and down in the mounting seat 61, a connecting ring 63 is slidably arranged on the upper end of the regulating column 62, rotating the connecting ring 63 can make the regulating column 62 rotate, the connecting ring 63 is arranged with a transmission gear 64 at the side end, a rotating disc 66 is further arranged on the mounting seat 61 through a mounting shaft 65, the lower end of the mounting shaft 65 is arranged with a driving gear 67 meshing with the transmission gear 64, rotating the rotating disc 66 can drive the regulating column 62 to rotate under the meshing of the driving gear 67 and the transmission gear 64.

[0050] When the track vehicle body 11 moves to the construction position, rotating the rotating disc 66 can make the mounting shaft 65 rotate, under the meshing of the driving gear 67 and the transmission gear 64, the regulating column 62 is driven to rotate, when the regulating column 62 rotates, the regulating column 62 moves downward under the threaded connection with the mounting seat 61, thereby driving the sliding frame 13 to move downward, so that the clamping strips 42 are respectively located on both sides of the rail, after the construction is completed, the rotating disc 66 is reversely rotated, and finally the sliding frame 13 is driven to move upward, which does not affect the normal driving of the track vehicle body 11. Embodiment 2

[0051] With reference to Figure 8 On the basis of embodiment one, the structural schematic diagram of the recovery device 7 of the application, in order to recover the iron filings waste generated by track construction, the recovery device 7 is arranged on the side of the track vehicle body 11 facing the sliding frame 13, the recovery device 7 comprises a negative pressure box 71 arranged inside the side of the track vehicle body 11 facing the sliding frame 13, a recovery pipe 72 is arranged on the upper end of the negative pressure box 71, and the recovery pipe 72 penetrates through the side wall of the track vehicle body 11, a flexible hose 73 is connected to the end of the recovery pipe 72 away from the track vehicle body 11, the flexible hose 73 will not damage the pipeline during the up and down movement of the sliding frame 13, a mounting pipe 74 is arranged on the lower end of the flexible hose 73, and the mounting pipe 74 penetrates through and is mounted on the sliding frame 13, and a suction cover 75 is connected to the lower end of the mounting pipe 74.

[0052] When the track is cut, polished, milled and maintained, the iron filings generated under the action of the negative pressure box 71 are sequentially collected into the negative pressure box 71 through the suction cover 75, the mounting pipe 74, the flexible hose 73 and the recovery pipe 72.

[0053] With reference to Figure 9 The structural schematic diagram of the driving assembly 8 of the application, in order to generate negative pressure in the negative pressure box 71 to adsorb the iron filings, the recovery device 7 further comprises a driving assembly 8 arranged inside the track vehicle body 11, an air extraction pipe 81 is arranged on the side of the negative pressure box 71 away from the sliding frame 13, and the end of the air extraction pipe 81 away from the negative pressure box 71 penetrates through the bottom of the track vehicle body 11, the driving assembly 8 comprises a driving motor 82 mounted in the track vehicle body 11, a rotating column 83 is rotatably mounted on the lower end of the upper plate of the track vehicle body 11, and the rotating column 83 penetrates into the inside of the air extraction pipe 81, the driving motor 82 drives the rotating column 83 to rotate under the transmission of the intermeshing connection gears 84, the intermeshing connection gears 84 are respectively mounted on the upper end of the rotating column 83 and the output end of the driving motor 82, a filter screen 85 is mounted in the air extraction pipe 81 to prevent the iron filings in the negative pressure box 71 from being discharged from the air extraction pipe 81, an air extraction fan 86 is arranged on the lower end of the rotating column 83, and the air extraction fan 86 is located in the vertical section of the air extraction pipe 81, and when the air extraction fan 86 rotates, the gas in the negative pressure box 71 is discharged through the air extraction pipe 81.

[0054] When the iron filings are adsorbed and removed, the driving motor 82 drives the rotating column 83 to rotate under the transmission of the intermeshing connection gears 84, and then the air extraction fan 86 rotates, and the gas in the negative pressure box 71 is discharged through the air extraction pipe 81, and the filter screen 85 in the air extraction pipe 81 prevents the iron filings in the negative pressure box 71 from being discharged from the air extraction pipe 81. Embodiment 3

[0055] With reference to Figure 10 And Figure 11As shown in the structural schematic view of the ballast backfilling device 9 of the present application, in order to supplement the ballast missing on both sides of the track while collecting iron filings, the ballast backfilling device 9 is arranged on the end of the track car body 11 away from the sliding frame 13, the ballast backfilling device 9 comprises a collection frame 91 arranged on the upper end of the track car body 11, the ballast to be supplemented is stored in the collection frame 91, the collection frame 91 is provided with ballast outlets 92 on both sides, the track car body 11 is provided with downwardly inclined ballast guide plates 93 on both sides, the ballast in the collection frame 91 falls into both sides of the track through the ballast outlets 92 and the ballast guide plates 93, the ballast backfilling device 9 further comprises a rotating seat 94 rotatably arranged in the collection frame 91, the lower end of the rotating seat 94 is connected to the output end of the driving motor 82, the driving motor 82 drives the rotating seat 94 to rotate, the middle part of the upper end of the rotating seat 94 is inclined downwardly towards the periphery, which helps the ballast to fall out of the ballast outlets 92, the middle part of the upper end of the rotating seat 94 is provided with a mounting column 95, a plurality of fixed partitions 96 are uniformly arranged around the mounting column 95, which prevents the ballast on the rotating seat 94 from bumping and damaging the collection frame 91 when the rotating seat 94 rotates, the side end of the fixed partition 96 away from the mounting column 95 is provided with an anti-pinch partition 98 through a torsion spring 97, which prevents the ballast from being clamped by the ballast outlets 92 and the fixed partitions 96 when the rotating seat 94 rotates, thereby affecting the rotation of the rotating seat 94, after the anti-pinch partition 98 is arranged through the torsion spring 97, when the ballast is clamped between the ballast outlets 92 and the fixed partitions 96, the anti-pinch partition 98 rotates, which helps the ballast to be discharged, and then the anti-pinch partition 98 is reset under the action of the torsion spring 97.

[0056] When the driving motor 82 is started, the rotating seat 94 rotates, the ballast on the rotating seat 94 rotates, the ballast is thrown out through the ballast outlets 92 under the action of centrifugal force, and falls into both sides of the track through the ballast guide plates 93, so as to supplement the ballast on both sides of the track.

[0057] In addition, the present application also provides a railway track maintenance construction method, which comprises the following steps:

[0058] S1: after the track car body 11 is moved to the construction position on the track, the rotating disc 66 is rotated, the adjusting column 62 drives the sliding frame 13 to slide downwardly under the thread cooperation between the adjusting column 62 and the mounting seat 61, and the clamping strips 42 are located on both sides of the rail;

[0059] S2: the adjusting rod 52 is rotated to adjust the inclination angle of the clamping strips 42 according to the slope of the rail, the inclination angle of the clamping strips 42 is confirmed by the indicating block 54 and the angle ruler mark 55, and then the adjusting handle 33 is rotated to clamp the track connection together for alignment.

[0060] S3: the construction tool 27 is arranged on the mounting block 26, and the track is welded, cut, milled and polished by the construction tool 27 on the mounting block 26 according to the track defects, so as to maintain the track.

[0061] S4: When the ballast needs to be supplemented, the ballast is added into the collecting frame 91, the driving motor 82 is started, the rotating seat 94 is driven to rotate, and the ballast in the collecting frame 91 falls to the two sides of the track through the ballast outlet 92 and the ballast guide plate 93 under the action of the centrifugal force to supplement the ballast.

[0062] S5: The driving motor 82 is started, the rotating column 83 is driven to rotate under the meshing of the connecting gear 84, and then the air suction fan 86 is rotated to suck out the air in the negative pressure box 71, the iron filings generated in the track construction are sequentially collected into the negative pressure box 71 through the adsorption cover 75, the installation pipe 74, the flexible hose 73, and the recovery pipe 72.

[0063] The embodiments of the specific implementation are the preferred embodiments of the present application, and do not limit the protection scope of the present application, so: any equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A railway track maintenance construction equipment, comprising a track vehicle body (11), the lower end of the track vehicle body (11) is provided with a mobile wheel (12) at four corners, and a sliding frame (13) is slidingly arranged at one end of the track vehicle body (11), characterized in that: The sliding frame (13) is provided with a maintenance device (2); the maintenance device (2) comprises a sliding groove (21) opened on the side of the sliding frame (13) away from the rail car body (11), a connecting sliding block (22) is slidably arranged on the sliding groove (21), an installation frame (23) is arranged on the connecting sliding block (22), a rotating shaft (24) is rotatably installed on the installation frame (23), an extension arm (25) is installed on the rotating shaft (24), an installation block (26) is arranged at the lower end of the extension arm (25), and a construction tool (27) is detachably installed on the installation block (26); The rail car body (11) is provided with a recovery device (7) on the side facing the sliding frame (13), the recovery device (7) comprises a negative pressure box (71) arranged inside the rail car body (11) on the side facing the sliding frame (13), a recovery pipe (72) is arranged at the upper end of the negative pressure box (71), and the recovery pipe (72) penetrates through the side wall of the rail car body (11), a flexible hose (73) is connected to the end of the recovery pipe (72) away from the rail car body (11), an installation pipe (74) is arranged at the lower end of the flexible hose (73), and the installation pipe (74) penetrates through and is installed on the sliding frame (13), and a suction cover (75) is connected to the lower end of the installation pipe (74); The recovery device (7) further comprises a driving assembly (8) arranged inside the rail car body (11), an air suction pipe (81) is arranged on the side of the negative pressure box (71) away from the sliding frame (13), the driving assembly (8) comprises a driving motor (82) installed in the rail car body (11), a rotating column (83) is rotatably installed at the lower end of the upper plate of the rail car body (11), and the rotating column (83) penetrates into the inside of the air suction pipe (81), a connecting gear (84) is respectively installed on the output end of the driving motor (82) and the upper end of the rotating column (83), and the connecting gears (84) are intermeshed, and an air suction fan (86) is arranged at the lower end of the rotating column (83); The rail car body (11) is provided with a ballast backfilling device (9) on the end away from the sliding frame (13), the ballast backfilling device (9) comprises a collection frame (91) arranged on the upper end of the rail car body (11), ballast outlets (92) are respectively arranged on the two sides of the collection frame (91), and downwardly inclined ballast guide plates (93) are respectively arranged on the two sides of the rail car body (11); The ballast backfilling device (9) further comprises a rotating seat (94) rotatably installed inside the collection frame (91), the output end of the driving motor (82) is connected to the lower end of the rotating seat (94), and the upper end of the rotating seat (94) is inclined downwardly towards the periphery.

2. A railway track maintenance machine according to claim 1, wherein: The sliding frame (13) is respectively provided with a positioning device (3) at both ends, the positioning device (3) comprises installation grooves (31) respectively formed at both sides of the lower end of the sliding frame (13), the two side walls of the installation groove (31) are jointly and rotatably connected with adjusting screws (32), the adjusting screws (32) are symmetrically provided with threads in opposite directions, and one end of the adjusting screw (32) penetrates through the side wall of the sliding frame (13); one end of the adjusting screw (32) is provided with an adjusting handle (33); two sliding plates (34) are symmetrically and slidably arranged in the installation groove (31), and the threads in opposite directions of the adjusting screw (32) are respectively engaged with the two sliding plates (34).

3. A railway track maintenance machine according to claim 2, wherein: The positioning device (3) further comprises a clamping element (4) arranged at the lower end of the sliding plate (34), the clamping element (4) comprises clamping arms (41) rotatably arranged at the lower end of the two sliding plates (34), and the clamping arms (41) are provided with clamping strips (42) at the lower end; a clamping pad (43) is arranged between the two clamping strips (42).

4. A railway track maintenance machine according to claim 3, wherein: The positioning device (3) further comprises an angle adjusting assembly (5), the angle adjusting assembly (5) comprises a fixed block (51) arranged at the middle of the lower end of the sliding frame (13), the fixed block (51) is rotatably connected with an adjusting rod (52), the adjusting rod (52) penetrates through the sliding plate (34), and the clamping arms (41) are fixed to the adjusting rod (52).

5. A railway track maintenance machine according to claim 3, wherein: The side end of the sliding plate (34) is rotatably connected with an installation ring (53), the installation ring (53) is slidably connected with the adjusting rod (52), the side end of the installation ring (53) is provided with an indicating block (54), and the side end of the sliding plate (34) is provided with an angle scale mark (55) corresponding to the indicating block (54).

6. A railway track maintenance construction method characterized by, The railway track maintenance construction equipment is used, and the following steps are included: S1: after the track vehicle body (11) is moved to the construction position on the track, the sliding frame (13) is slid downward, and the clamping strips (42) are respectively located on the two sides of the rail; S2: the indicating block (54) and the angle scale mark (55) help the construction personnel to confirm the inclination angle of the clamping strips (42), and then the adjusting handle (33) is rotated to make the clamping strips (42) jointly clamp the track connection for alignment; S3: the installation block (26) is provided with a construction tool (27), and the track is welded, cut, milled, polished and maintained by the construction tool (27) on the installation block (26) according to the track defects; S4: the ballast is added into the collection frame (91), the driving motor (82) is started, and the ballast in the collection frame (91) falls to the two sides of the track through the ballast outlet (92) and the ballast guide plate (93) under the action of the centrifugal force to supplement the ballast; S5: while the driving motor (82) is started, the air suction fan (86) is rotated to suck the air in the negative pressure box (71), and the iron filings generated in the track construction are collected in the negative pressure box (71).

Images