Precise sleeper block adjusting method for ballastless track pavement construction

Abstract

The invention belongs to the technical field of ballastless track paving construction, and particularly relates to a ballastless track paving construction sleeper block accurate adjusting method which comprises the following steps: S1, connecting a sample steel rail to pre-arranged sleeper blocks; lifting the sample steel rail and the sleeper block to a rail mounting table of a ballastless track base by using a lifting appliance; s2, a detection mechanism is placed on the sample steel rail; the detection mechanism walks along the sample steel rail and detects the current height and the current center line position of different positions of the sample steel rail; according to the preset height and the preset center line position, the height adjusting height and the center adjusting distance needed by the sample steel rail are calculated; s3, the sample steel rail is heightened and centered according to the heightened height and the centered distance; and accurate adjustment of the position of the sleeper block is realized. According to the scheme, the mounting positions of the sleeper blocks can be accurately adjusted; adjustment of the center line position and the height position of batched sleeper blocks can be achieved, so that the ballastless track paving construction speed is increased, and the construction efficiency is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of ballastless track paving construction, and in particular relates to a method for accurately adjusting a sleeper block in ballastless track paving construction. Background Art

[0002] With the increase in the speed of high-speed railways, the requirements for the accuracy of ballastless track paving are becoming higher and higher. In the existing technology, pads are often used to raise the height of each sleeper block (also called sleeper pier) individually, and a crowbar is used to directly pry the sleeper block to adjust the lateral position of the sleeper block. This method of adjusting the lateral position and height position of the sleeper block one by one not only affects the speed of ballastless track paving construction, but is also prone to large errors, which affects the upper limit of the safe driving speed of rail trains; in addition, the sleeper block is also prone to position displacement after pouring cement, which further affects the installation accuracy of the sleeper block. Summary of the invention

[0003] In order to solve one or more of the above problems existing in the prior art, the present invention provides a method for accurately adjusting sleeper blocks in ballastless track paving construction.

[0004] The technical solution adopted by the present invention is:

[0005] A method for accurately adjusting sleeper blocks in ballastless track paving construction comprises the following steps:

[0006] S1: Place the sample rail on the pre-arranged sleeper block and connect and fix it; connect the lifting fixture to the sample rail, and use the lifting fixture to lift the sample rail and the sleeper block together to the track installation platform of the ballastless track base;

[0007] S2: After removing the lifting fixture, place a detection mechanism on the sample rail; the detection mechanism moves along the sample rail and detects the current height and current centerline position of the sample rail at different positions; according to the preset height and preset centerline position, calculate the required height adjustment and centering distance of the sample rail;

[0008] S3: According to the height adjustment and center adjustment distance, the sample rail is heightened and centered to achieve precise adjustment of the sleeper block position.

[0009] As an alternative or supplement to the above-mentioned method for precise adjustment of sleeper blocks: after the sleeper block position section is completed, formwork is installed on opposite sides of the sleeper pier, and concrete is poured between the formwork to form a sleeper casting platform; after the sleeper casting platform is solidified, the connection between the sample rail and the sleeper block is disconnected, and the sample rail is lifted away using a lifting fixture.

[0010] As an alternative or supplement to the above-mentioned method for precise adjustment of the sleeper block: the lifting fixture includes a locking screw, a hanger and a U-shaped hook; the hanger is a frame structure formed by connecting rods, and a U-shaped hook is respectively arranged at the four corners of the hanger, the U-shaped mouth of the U-shaped hook faces downward, and a folding hook and a locking screw are respectively arranged on both sides of the U-shaped mouth of the U-shaped hook, the folding hook is pressed against one side of the waist of the sample rail, and the locking screw can be pressed against the other side of the waist of the sample rail when tightened.

[0011] As an alternative or supplement to the above-mentioned method for precise adjustment of sleeper blocks: the sleeper fixing frame includes a fixed cross bar, a wedge block and an anti-skid pad; the sample rail includes two parallel rails, and a plurality of sleeper blocks are fixedly connected under the sample rail; the fixed cross bar is provided with two T-slots, both of which are perpendicular to the fixed cross bar, and the two T-slots are respectively located at the left and right ends of the fixed cross bar; when the sleeper fixing frame is connected to the sample rail, the bottom of the sample rail can extend into the T-slot; the anti-skid pad is against the waist of the sample rail, and the wedge block is against between the anti-skid pad and the side wall of the T-slot.

[0012] As an alternative or supplement to the above-mentioned sleeper block precise adjustment method: the fixed cross bar of the sleeper fixing frame is vertically fixedly connected to the sample rail, and both ends of the fixed cross bar extend to the outside of the sample rail; in step S3, multiple sleeper pier fine adjustment mechanisms are used to adjust the height and center of different positions of the sample rail.

[0013] As an alternative or supplement to the above-mentioned method for precise adjustment of sleeper blocks: a QR code is installed on the sleeper pier fine-adjustment mechanism; the detection mechanism includes a detection vehicle, a traction vehicle, a barcode scanner and a barcode scanner frame; the traction vehicle is connected to the detection vehicle through a traction rod, and a barcode scanner frame is provided on the detection vehicle, and the barcode scanner frame is installed on the barcode scanner; the barcode scanner is used to scan the QR code to determine the number and position of the sleeper pier fine-adjustment mechanism; according to the position of the sleeper pier fine-adjustment mechanism, each sleeper pier fine-adjustment mechanism is controlled to make different positions of the sample rail reach the preset height and centerline position.

[0014] As an alternative or supplement to the above-mentioned method for precise adjustment of sleeper blocks: the sleeper pier fine-adjustment mechanism includes a height fine-adjustment mechanism, a centerline fine-adjustment mechanism, a lifting and lowering adjustment mechanism and a transverse groove member; the fixed cross bar is arranged in the groove cavity of the transverse groove member; one end of the transverse groove member is fixedly connected to the support box, and the other end is fixedly connected to the centerline fine-adjustment mechanism; the centerline fine-adjustment mechanism is used for laterally pushing the fixed cross bar; the centerline fine-adjustment mechanism and the support box are respectively connected to a lifting and lowering adjustment mechanism, and the height is adjusted by the lifting and lowering adjustment mechanism; the lifting and lowering adjustment mechanism is correspondingly connected to a height fine-adjustment mechanism, and the height is adjusted by the height fine-adjustment mechanism.

[0015] As an alternative or supplement to the above-mentioned method for precise adjustment of the sleeper block: the center line fine adjustment mechanism includes a centering motor, a docking shell, a centering screw and a centering sleeve; an adjustment plate is fixedly arranged in the tube cavity of the fixed cross bar end; the end of the transverse groove is fixedly connected to the docking shell; a guide docking cavity is arranged inside the docking shell, and the guide docking cavity is used for inserting the end of the fixed cross bar; a centering screw is arranged in the guide docking cavity, and the centering screw is connected to the centering motor in transmission; the centering sleeve is threadedly matched with the centering screw to control the lateral sliding of the centering sleeve; when the center line fine adjustment mechanism is in use, the centering sleeve extends into the tube cavity of the fixed cross bar, and pushes the fixed cross bar to move laterally through the adjustment plate to adjust the lateral position of the center line of the sleeper block.

[0016] As an alternative or supplement to the above-mentioned method for precise adjustment of the sleeper block: the lifting and adjusting mechanism includes a support arm, a lifting sleeve, an end seat, a lifting screw, a height adjustment arrow and a height adjustment scale; the lifting screw is vertically arranged, and the upper and lower ends of the lifting screw are rotatably connected with end seats, and the end seats are fixed to the side elevation of the height fine-tuning mechanism; the lifting sleeve is threadedly matched with the lifting screw and is fixedly connected to the support arm; the support arm is rotatably connected to the docking shell; a pitch axis that can be lifted and moved is provided on the docking shell, and the end of the pitch axis is vertically rotatably connected to the support arm; a pitch adjustment screw is rotatably connected to the docking shell, and the pitch adjustment screw is threadedly connected to the middle part of the pitch axis; the height adjustment scale is fixed to the side elevation of the height fine-tuning mechanism, and the height adjustment arrow is provided on the support arm, and the height adjustment arrow is used to indicate the height position of the support arm on the height fine-tuning mechanism.

[0017] As an alternative or supplement to the above-mentioned method for precise adjustment of the sleeper block: the height fine-adjustment mechanism includes a telescopic head, a telescopic tube seat, a height-adjusting screw, a height-adjusting threaded sleeve, a height-adjusting reducer and a height-adjusting motor; the telescopic head is slidably connected to the lower end of the telescopic tube seat and fixedly connected to the height-adjusting threaded sleeve; the height-adjusting motor is fixed to the inner top of the telescopic tube seat and is connected to the height-adjusting screw through the height-adjusting reducer; the height-adjusting screw is threadably matched with the height-adjusting threaded sleeve.

[0018] The beneficial effects of the present invention are:

[0019] 1. This solution can accurately adjust the installation position of the sleeper block, and can meet the requirements of high-speed or ultra-high-speed trains for ballastless tracks during ballastless track paving construction;

[0020] 2. This solution can adjust the centerline position and height position of batch sleeper blocks through the sample track, thereby increasing the speed of ballastless track paving construction, avoiding the influence of adjusting the sleeper blocks one by one on the construction speed, and improving construction efficiency. In addition, due to the positioning through the sample track, the position deviation of the sleeper blocks during cement pouring can be reduced to ensure installation accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below.

[0022] Figure 1 This is the use status diagram of the pillow pier fine adjustment mechanism;

[0023] Figure 2 It is a structural schematic diagram of the pillow pier fine adjustment mechanism;

[0024] Figure 3 It is the structural diagram of the sample rail, sleeper block and sleeper fixing frame;

[0025] Figure 4 It is a structural schematic diagram of the sleeper fixing frame;

[0026] Figure 5 It is the coordination structure diagram of the centerline fine adjustment mechanism, lifting adjustment mechanism, and height fine adjustment mechanism;

[0027] Figure 6 is a cross-sectional view of the height fine adjustment mechanism;

[0028] Figure 7 This is the usage status diagram of the centerline fine adjustment mechanism;

[0029] Figure 8 It is a structural diagram of the centerline fine adjustment mechanism;

[0030] Fig. 9 It is a schematic diagram of the structure of the testing organization;

[0031] Fig.10 It is a structural diagram of the lifting fixture.

[0032] In the figure: 1-formwork; 2-ballastless track base; 21-water retaining edge; 22-sleeper casting platform; 23-track installation platform; 3-lifting fixture; 31-pad; 32-locking screw; 33-hanger; 34-U-shaped hook; 4-height fine adjustment mechanism; 41-telescopic head; 42-telescopic pipe seat; 43-height adjustment screw; 44-height adjustment threaded sleeve; 45-height adjustment reducer; 46-height adjustment motor; 47-electrical accessories; 48-accessory protection shell; 5-support box; 6-transverse groove; 61-centering arrow; 7-centerline fine adjustment mechanism; 71-centering motor; 72-centering reducer; 73-docking shell; 74-centering screw; 75-guide docking cavity; 76-centering sliding sleeve; 77-pitch axis; 78-pitch Adjusting screw; 8- inclined tie rod; 9- lifting and lowering adjustment mechanism; 91- supporting arm; 92- lifting and lowering sleeve; 93- end seat; 94- lifting and lowering screw; 95- height adjustment arrow; 96- height adjustment scale; 10- L-shaped bracket; 101- tightening screw; 11- sleeper block; 12- control box; 13- sample rail; 14- sleeper fixing frame; 141- fixed cross bar; 142- wedge block; 143- anti-skid pad; 144- positioning hole; 145- centering scale; 146- T-slot; 147- adjusting plate; 15- detection mechanism; 151- detection vehicle; 152- traction vehicle; 153- code scanner; 154- code scanner frame; 16- pulling frame; 161- hook; 162- pulling sleeve; 163- pulling threaded rod. DETAILED DESCRIPTION

[0033] The technical solution in this embodiment will be clearly and completely described below in conjunction with the accompanying drawings. The described embodiments are only some of the embodiments, not all of them. Based on the embodiments in this solution, all other embodiments obtained by ordinary technicians in this field without making creative work are within the protection scope of this solution.

[0034] Example 1

[0035] like Figures 1 to 10 As shown, this embodiment designs a method for accurately adjusting the sleeper block 11 in ballastless track paving construction, comprising the following steps:

[0036] S1: Place the sample rail 13 on the pre-arranged sleeper block 11 (also called sleeper pier), and connect and fix it; connect the lifting fixture 3 to the sample rail 13, the lifting fixture 3 can adopt the structure in Example 2, and use the lifting fixture to connect the lifting fixture 3 to lift the sample rail 13 and the sleeper block 11 together to the track mounting platform 23 of the ballastless track base 2. The two sample rails 13 can be connected and fixed by the sleeper fixing frame 14 in Example 4.

[0037] S2: After manually removing the lifting fixture 3, a detection mechanism 15 is placed on the sample rail 13. The detection mechanism 15 can adopt the structure of Example 4. The detection mechanism 15 moves along the sample rail 13 and detects the current height and current centerline position of the sample rail 13 at different positions; the corresponding control terminal (tablet, industrial computer, etc.) calculates the required height adjustment and centering distance of the sample rail 13 according to the preset height and preset centerline position.

[0038] S3: According to the height adjustment and centering distance, the sample rail 13 is heightened and centered. The height adjustment and centering can be adjusted manually or by using the sleeper fine-adjusting mechanism in Example 5, so as to achieve precise adjustment of the position of the sleeper block 11.

[0039] Through the above steps S1-S3, the precise adjustment of the position of the sleeper block 11 can be achieved.

[0040] When the position of the sleeper block 11 is completed, the templates 1 are installed on the opposite sides of the track block, and concrete is poured between the templates 1 to form a sleeper casting platform 22; after the sleeper casting platform 22 solidifies, the connection between the sample rail 13 and the sleeper block 11 is disconnected, and the sample rail 13 is lifted away by the lifting fixture 3, and the next round of batch installation and precise installation of the sleeper blocks 11 can be carried out.

[0041] Example 2

[0042] like Fig.10 As shown, this embodiment designs a lifting fixture 3, which includes a locking screw 32, a hanger 33, a U-shaped hook 34 and other components.

[0043] The hanger 33 is a frame structure formed by connecting rods, and a U-shaped hook is provided at each of the four corners of the hanger 33. The U-shaped mouth of the U-shaped hook faces downward, and a part of the pipe rod of the hanger 33 is embedded in the inner side of the U-shaped hook. The inner wall of the U-shaped hook is pressed against the side wall of the hanger 33 by a pad tube 31.

[0044] A folding hook and a locking screw 32 are respectively arranged on both sides of the U-shaped opening of the U-shaped hook, and the folding hook is bent inward so that the folding hook can be pressed against one side of the waist of the sample rail 13. The locking screw 32 is arranged horizontally and cooperates with the thread of the U-shaped hook. When the locking screw 32 is tightened, the locking screw 32 is pressed against the other side of the waist of the sample rail 13, thereby realizing the fixed connection between the lifting fixture 3 and the sample rail 13.

[0045] Example 3

[0046] like Figure 4 As shown, this embodiment designs a sleeper fixing frame 14 including components such as a fixing cross bar 141, a wedge block 142 and an anti-slip pad block 143.

[0047] The sample rail 13 includes two parallel rails, and a plurality of sleeper blocks 11 are fixedly connected below the sample rail 13. The sample rail 13 includes a rail bottom, a rail waist and a rail head, wherein the rail head is located above the rail bottom and the rail waist is located between the rail bottom and the rail head.

[0048] The fixed cross bar 141 is a long bar structure, and specifically a square tube structure can be adopted. The fixed cross bar 141 is provided with two T-slots, which are respectively located at the left and right ends of the fixed cross bar 141, and the T-slots are perpendicular to the fixed cross bar 141. The bottom width of the T-slot is greater than the slot width, the bottom width of the T-slot is greater than the width of the rail bottom, the slot width of the T-slot can be less than the width of the rail bottom, and the slot width of the T-slot is greater than the thickness of the rail waist. The slot direction of the T-slot is upward, and the distance between the two T-slots on the fixed cross bar 141 is equivalent to the spacing between the two sample rails 13.

[0049] When the sleeper fixing frame 14 is connected to the sample rail 13, the bottom of the sample rail 13 extends into the T-slot, and anti-skid pads 143 are placed on the inner and outer sides of the rail waist, and the side of the anti-skid pad 143 is against the rail waist of the sample rail 13. Then, the wedge block 142 is inserted between the anti-skid pad 143 and the side wall of the T-slot, and the wedge block 142 can be hammered with a tool so that one side of the wedge block 142 is pressed against the anti-skid pad 143 and the other side is pressed against the side wall of the T-slot. Through the above steps, the sleeper fixing frame 14 and the sample rail 13 can be fixedly connected.

[0050] Wedge blocks 142 and wedge blocks 142 are required in both T-slots to press against the inner and outer sides of the waist of the sample rail 13 , so as to fix the sleeper fixing frame 14 and the two sample rails 13 .

[0051] In addition, a positioning hole 144 with an internal thread can be provided on the wedge block 142, and a waist-shaped hole can be provided on the anti-slip pad 143; then a screw is used to pass through the positioning hole 144 and the waist-shaped hole to press against the waist of the rail, so as to reduce the probability of the wedge block 142 being loosened. When the wedge block 142 has a tendency to slide along the length direction of the sample rail 13, the nut part of the screw can be blocked by the fixed cross bar 141, thereby reducing the probability of the wedge block 142 falling off.

[0052] A centering scale 145 is provided on the outer wall of the middle portion of the fixed crossbar 141. The centering scale 145 can be used to assist in determining the lateral adjustment distance (i.e., the centering position) of the sample rail 13 when the position is adjusted.

[0053] The side of the anti-skid pad 143 facing the rail waist is provided with anti-skid grooves. The side of the anti-skid pad 143 facing the wedge block 142 is provided with a guide groove, and the side of the wedge block 142 facing the anti-skid pad 143 is provided with a convex strip that slides with the guide groove.

[0054] When in use, generally, a plurality of sleeper fixing frames 14 are installed in the length direction of the sample rail 13. When the tool for assisting in adjusting the position of the ballastless track applies force, the force will directly act on the sleeper fixing frame 14, which reduces the risk of hidden damage to the ballastless track compared to directly acting on the ballastless track.

[0055] The fixed cross bar 141 of the sleeper fixing frame 14 is vertically fixedly connected to the sample rail 13, and both ends of the fixed cross bar 141 extend to the outside of the sample rail 13; in step S3 of Example 3, multiple sleeper pier fine-adjustment mechanisms can be used to adjust the position of the sleeper fixing frame 14 to achieve height adjustment and centering of different positions of the sample rail 13.

[0056] Example 4

[0057] like Fig. 9 As shown, this embodiment designs a detection mechanism 15; the detection mechanism 15 includes components such as a detection vehicle 151, a tractor 152, a barcode scanner 153 and a barcode scanner frame 154.

[0058] A QR code is installed on the pillow pier fine-adjustment mechanism, and the QR code information corresponds to the pre-examination number of the pillow pier fine-adjustment mechanism.

[0059] The tractor 152 is connected to the inspection vehicle 151 via a traction rod. A code scanning frame 154 is provided on the inspection vehicle 151 , and a code scanner 153 is installed on the code scanning frame 154 .

[0060] When the inspection vehicle 151 passes through the pillow fine adjustment mechanism under the traction of the tractor 152, the code scanner 153 can scan the QR code to determine the number and position of the pillow fine adjustment mechanism. The position of the inspection vehicle 151 when scanning the code is the position of the pillow fine adjustment mechanism. Since different positions of the sample rail require different height adjustment and center adjustment distances, it is convenient to control each pillow fine adjustment mechanism separately according to the position of each pillow fine adjustment mechanism, so that different positions of the sample rail 13 reach the preset height and centerline position.

[0061] Example 5

[0062] like Figures 1 to 8 As shown, this embodiment designs a pillow pier fine adjustment mechanism, and the pillow pier fine adjustment mechanism can be applied to Embodiments 1 to 4.

[0063] The pillow pier fine-adjustment mechanism in this embodiment includes components such as a height fine-adjustment mechanism 4 , a center line fine-adjustment mechanism 7 , a lifting adjustment mechanism 9 and a transverse groove member 6 .

[0064] The transverse groove member 6 is a groove member with the groove opening facing upward. When in use, the fixed cross bar 141 of the sleeper fixing frame 14 is arranged in the groove cavity of the transverse groove member 6 and can slide in the transverse groove member 6 to achieve left and right position adjustment. The transverse groove member 6 provides support and guidance for the fixed cross bar 141, and a centering arrow 61 is set in the middle of the transverse groove member 6. The centering arrow 61 points to a certain scale of the centering scale, thereby indicating the relative position of the sleeper fixing frame 14 and the transverse groove member 6.

[0065] One end of the transverse groove 6 is fixedly connected to the support box 5, and the other end is fixedly connected to the center line fine-adjustment mechanism 7; the center line fine-adjustment mechanism 7 is used to push the fixed cross bar 141 laterally; the center line fine-adjustment mechanism 7 and the support box 5 are respectively connected to a lifting adjustment mechanism 9, and the height is adjusted by the lifting adjustment mechanism 9; the lifting adjustment mechanism 9 is correspondingly connected to a height fine-adjustment mechanism 4, and the height is adjusted by the height fine-adjustment mechanism 4.

[0066] The centerline fine adjustment mechanism 7 includes components such as a centering motor 71, a docking shell 73, a centering screw and a centering sleeve 76. The fixed crossbar 141 is a square tube structure, and the side of the centering sleeve 76 abuts against the tube wall of the fixed crossbar 141 and limits the rotation of the centering sleeve 76. An adjustment piece 147 is fixedly arranged in the tube cavity at the end of the fixed crossbar 141, and the adjustment piece 147 is fixed by a screw that passes through the side wall of the fixed crossbar 141 and is nailed into the edge of the adjustment piece 147. A circular hole is arranged in the middle of the adjustment piece 147, and the centering sleeve 76 is T-shaped, and a part of the centering sleeve 76 can be inserted into the circular hole.

[0067] The docking shell 73 is provided with a guiding docking cavity 75 inside. The guiding docking cavity 75 is a square cavity structure. The end of the transverse groove 6 is inserted into the guiding docking cavity 75 and fixed. When in use, the end of the fixed cross bar 141 is also inserted into the guiding docking cavity 75.

[0068] The centering screw is arranged in the guide docking cavity 75, and the centering screw is connected to the centering motor 71 by transmission; when the centering motor 71 is started, the centering screw can rotate under the drive of the centering motor 71. The centering sleeve 76 is threadedly matched with the centering screw. A gear transmission mechanism is arranged on the side wall of the docking shell 73, and the output end of the gear transmission mechanism is fixedly connected to the centering screw, and the input end of the gear transmission mechanism is fixedly connected to the centering motor 71.

[0069] A plurality of fixed cross bars 141 are fixed in the length direction of the sample rail 13, and a centerline adjustment mechanism is correspondingly provided at the end of each fixed cross bar 141, and all centerline adjustment mechanisms can control the fixed cross bars 141 to move in the same horizontal direction. The upper part of the docking shell 73 has a connection part for external connection, so as to facilitate the connection of the centerline adjustment mechanism to other components.

[0070] The supporting box 5 and the docking shell 73 of the center line fine adjustment mechanism 7 have the same structure and are fixedly connected to the other end of the transverse groove member 6 .

[0071] An adjusting piece 147 is fixedly arranged in the tubular cavity at the end of the fixed cross bar 141; the end of the transverse groove member 6 is fixedly connected to the docking shell 73; the interior of the docking shell 73 is provided with a guide docking cavity 75, and the guide docking cavity 75 is used for inserting the end of the fixed cross bar 141; a centering screw is arranged in the guide docking cavity 75, and the centering screw is transmission-connected to the centering motor 71; the centering sleeve 76 is threadedly matched with the centering screw to control the lateral sliding of the centering sleeve 76; when the center line fine adjustment mechanism 7 is in use, the centering sleeve 76 extends into the tubular cavity of the fixed cross bar 141, and pushes the fixed cross bar 141 to move laterally through the adjusting piece 147 to adjust the lateral position of the center line of the sleeper block 11.

[0072] When the centerline adjustment mechanism is in use, the fixed crossbar 141 is placed into the transverse groove 6, and the end of the fixed crossbar 141 is inserted into the guide docking cavity 75, so that the centering sleeve 76 extends into the tube cavity of the fixed crossbar 141 to be inserted into the round hole of the adjustment plate 147, and at the same time, one end of the centering sleeve 76 abuts against the end surface of the adjustment plate 147, and the side of the centering sleeve 76 abuts against the side wall of the tube cavity of the fixed crossbar 141. When the centering screw is rotated under the drive of the centering motor 71, the centering sleeve 76 can slide laterally relative to the centering screw, and push the fixed crossbar 141 to move laterally through the adjustment plate 147, so as to adjust the lateral position of the centerline of the sample rail 13. When the installation position of the centerline adjustment mechanism is turned to the other end of the fixed crossbar 141, the lateral position of the centerline of the sample rail 13 will be adjusted in the opposite direction.

[0073] The lifting adjustment mechanism 9 includes a support arm 91, a lifting sleeve 92, an end seat 93, a lifting screw 94, a height adjustment arrow 95, and a height adjustment scale 96. The lifting screw 94 is arranged vertically, and the upper and lower ends of the lifting screw 94 are rotatably connected with the end seat 93, and the end seat 93 is fixed to the side elevation of the height fine adjustment mechanism 4; the lifting sleeve 92 is threadedly matched with the lifting screw 94 and is fixedly connected to the support arm 91; the support arm 91 is rotatably connected to the docking shell 73; a pitch axis 77 that can be lifted and moved is arranged on the docking shell 73, and the end of the pitch axis 77 is vertically rotatably connected to the support arm 91; a pitch adjustment screw 78 is rotatably connected to the docking shell 73, and the pitch adjustment screw 78 is threadedly connected to the middle part of the pitch axis 77. When the pitch adjustment screw 78 is rotated, the pitch axis 77 can be controlled to move vertically up and down, and because the pitch axis 77 is rotatably connected to the support arm 91, the docking shell 73 can adjust the pitch angle relative to the support arm 91. The height adjustment scale 96 is fixed on the side elevation of the height fine adjustment mechanism 4, and the height adjustment arrow 95 is set on the support arm 91, and the height adjustment arrow 95 is used to indicate the height position of the support arm 91 on the height fine adjustment mechanism 4.

[0074] The height fine-adjusting mechanism 4 includes a telescopic head 41, a telescopic tube seat 42, a height-adjusting screw 43, a height-adjusting threaded sleeve 44, a height-adjusting reducer 45 and a height-adjusting motor 46; the telescopic head 41 is slidably connected to the lower end of the telescopic tube seat 42 and is fixedly connected to the height-adjusting threaded sleeve 44; the height-adjusting motor 46 is fixed to the inner top of the telescopic tube seat 42 and is connected to the height-adjusting screw 43 through the height-adjusting reducer 45; the height-adjusting screw 43 is threadably matched with the height-adjusting threaded sleeve 44.

[0075] In order to achieve the fixation of the height fine adjustment mechanism 4: the lower end of the telescopic head 41 is fixedly connected with an L-shaped bracket 10, the lower end of the telescopic head 41 and the horizontal part of the L-shaped bracket 10 are against the top surface of the track mounting platform 23, and the vertical part of the L-shaped bracket 10 is against the side surface of the track mounting platform 23 through the tightening screw 101, and the tightening screw 101 is threadedly connected with the L-shaped bracket 10. The upper end of the telescopic tube seat 42 is provided with a pulling frame 16, and the pulling frame 16 includes a hook 161, a pulling sleeve 162 and a pulling threaded rod 163, and the two ends of the pulling sleeve 162 are respectively threadedly connected with the pulling threaded rod 163; the thread directions of the two pulling threaded rods 163 are opposite, one pulling threaded rod 163 is connected to the telescopic tube seat 42, and the other pulling threaded rod 163 is connected to the hook 161, and the hook 161 is used to be hung on the water retaining edge 21 of the ballastless track base 2. An oblique tie rod 8 may also be disposed at the upper end of the telescopic tube seat 42 , one end of the oblique tie rod 8 being connected to the track mounting platform 23 , and the other end of the oblique tie rod 8 being connected to the telescopic tube seat 42 .

[0076] A control box 12 may be provided on the side of the sample rail 13, and a PLC controller may be provided in the control box 12. The PLC controller is used to control the on / off and forward / reverse rotation of the height adjustment motor 46 and the center adjustment motor 71, thereby realizing automatic height adjustment and automatic center adjustment. The PLC controller may be connected to external communication via a wireless module such as Bluetooth, thereby realizing remote control.

[0077] The above embodiments are merely examples for the purpose of clarifying the description, and are not intended to limit the implementation methods; it is not necessary and impossible to list all implementation methods exhaustively. However, obvious changes or modifications derived therefrom are still within the scope of protection of the present technology.

Claims

1. A method for accurately adjusting sleeper blocks in ballastless track paving construction, characterized in that: The following steps are involved: S1: placing the sample rail (13) on the pre-arranged sleeper block (11) and connecting and fixing them; connecting the lifting fixture (3) to the sample rail (13), and using the lifting fixture to lift the sample rail (13) and the sleeper block (11) together to the track mounting platform (23) of the ballastless track base (2); S2: After removing the lifting fixture (3), a detection mechanism (15) is placed on the sample steel rail (13); the detection mechanism (15) moves along the sample steel rail (13) and detects the current height and current centerline position of the sample steel rail (13) at different positions; and according to the preset height and preset centerline position, the required height adjustment and centering distance of the sample steel rail (13) are calculated; S3: According to the height adjustment and the center adjustment distance, the sample rail (13) is height adjusted and center adjusted to achieve accurate adjustment of the position of the sleeper block (11).

2. The method for accurately adjusting sleeper blocks in ballastless track paving construction according to claim 1 is characterized in that: After the sleeper block (11) is positioned, formwork (1) is installed on opposite sides of the sleeper pier, and concrete is poured between the formwork (1) to form a sleeper casting platform (22); after the sleeper casting platform (22) is solidified, the connection between the sample rail (13) and the sleeper block (11) is disconnected, and the sample rail (13) is lifted away using a lifting fixture (3).

3. The sleeper block precise adjustment method for ballastless track paving construction according to claim 1, characterized in that: The hoisting fixture (3) comprises a locking screw (32), a hanger (33) and a U-shaped hook (34); the hanger (33) is a frame structure formed by connecting rods, and a U-shaped hook is respectively arranged at the four corners of the hanger (33), the U-shaped mouth of the U-shaped hook faces downward, and a folding hook and a locking screw (32) are respectively arranged on both sides of the U-shaped mouth of the U-shaped hook, the folding hook is pressed against one side of the waist of the sample rail (13), and the locking screw (32) can be pressed against the other side of the waist of the sample rail (13) when being tightened.

4. The method for accurately adjusting sleeper blocks in ballastless track paving construction according to claim 1, characterized in that: The sleeper fixing frame (14) comprises a fixed cross bar (141), a wedge block (142) and an anti-skid pad (143); the sample steel rail (13) comprises two mutually parallel rails, and a plurality of sleeper blocks (11) are fixedly connected below the sample steel rail (13); the fixed cross bar (141) is provided with two T-shaped slots, both of which are perpendicular to the fixed cross bar (141), and the two T-shaped slots are respectively located at the left and right ends of the fixed cross bar (141); when the sleeper fixing frame (14) is connected to the sample steel rail (13), the rail bottom of the sample steel rail (13) can extend into the T-shaped slot; the anti-skid pad (143) abuts against the rail waist of the sample steel rail (13), and the wedge block (142) abuts between the anti-skid pad (143) and the side wall of the T-shaped slot.

5. The method for accurately adjusting sleeper blocks in ballastless track paving construction according to any one of claims 1 to 4, characterized in that: The fixed cross bar (141) of the sleeper fixing frame (14) is vertically fixedly connected to the sample steel rail (13), and both ends of the fixed cross bar (141) extend to the outside of the sample steel rail (13); in step S3, a plurality of sleeper pier fine adjustment mechanisms are used to adjust the height and center of different positions of the sample steel rail (13).

6. The method for accurately adjusting sleeper blocks in ballastless track paving construction according to claim 5, characterized in that: A two-dimensional code is installed on the pillow fine-adjustment mechanism; the detection mechanism (15) comprises a detection vehicle (151), a tractor (152), a code scanner (153) and a code scanner frame (154); the tractor (152) is connected to the detection vehicle (151) through a traction rod, a code scanner frame (154) is arranged on the detection vehicle (151), and a code scanner (153) is installed on the code scanner frame (154); the code scanner (153) is used to scan the two-dimensional code to determine the number and position of the pillow fine-adjustment mechanism; according to the position of the pillow fine-adjustment mechanism, each pillow fine-adjustment mechanism is controlled so that different positions of the sample rail (13) reach a preset height and centerline position.

7. The sleeper block precise adjustment method for ballastless track paving construction according to claim 5, characterized in that: The pillow pier fine-adjustment mechanism comprises a height fine-adjustment mechanism (4), a center line fine-adjustment mechanism (7), a lifting and lowering adjustment mechanism (9) and a transverse groove member (6); the fixed cross bar (141) is arranged in the groove cavity of the transverse groove member (6); one end of the transverse groove member (6) is fixedly connected to the support box (5), and the other end is fixedly connected to the center line fine-adjustment mechanism (7); the center line fine-adjustment mechanism (7) is used to push the fixed cross bar (141) laterally; the center line fine-adjustment mechanism (7) and the support box (5) are respectively connected to a lifting and lowering adjustment mechanism (9), and the height is adjusted by the lifting and lowering adjustment mechanism (9); the lifting and lowering adjustment mechanism (9) is correspondingly connected to a height fine-adjustment mechanism (4), and the height is adjusted by the height fine-adjustment mechanism (4).

8. The method for accurately adjusting sleeper blocks in ballastless track paving construction according to claim 7, characterized in that: The centerline fine adjustment mechanism (7) comprises a centering motor (71), a docking shell (73), a centering screw and a centering sleeve (76); an adjustment piece (147) is fixedly arranged in the tube cavity at the end of the fixed crossbar (141); the end of the transverse groove (6) is fixedly connected to the docking shell (73); a guide docking cavity (75) is arranged inside the docking shell (73), and the guide docking cavity (75) is used for inserting the end of the fixed crossbar (141); the guide A centering screw rod is arranged in the docking cavity (75), and the centering screw rod is drivingly connected to the centering motor (71); the centering sleeve (76) is threadedly matched with the centering screw rod to control the lateral sliding of the centering sleeve (76); when the center line fine adjustment mechanism (7) is in use, the centering sleeve (76) extends into the tube cavity of the fixed cross bar (141), and pushes the fixed cross bar (141) to move lateraly through the adjustment sheet (147), so as to adjust the lateral position of the center line of the sleeper block (11).

9. The method for accurately adjusting sleeper blocks in ballastless track paving construction according to claim 8, characterized in that: The lifting adjustment mechanism (9) comprises a support arm (91), a lifting sleeve (92), an end seat (93), a lifting screw (94), a height adjustment arrow (95) and a height adjustment scale (96); the lifting screw (94) is arranged vertically, and the upper and lower ends of the lifting screw (94) are rotatably connected to the end seats (93), and the end seats (93) are fixed to the side surface of the height fine adjustment mechanism (4); the lifting sleeve (92) is threadedly matched with the lifting screw (94) and is fixedly connected to the support arm (91); the support arm (91) is rotatably connected to the docking shell (73); A pitch axis (77) capable of being lifted and lowered is arranged on the docking shell (73), and the end of the pitch axis (77) is vertically rotatably connected to the support arm (91); a pitch adjustment screw (78) is rotatably connected to the docking shell (73), and the pitch adjustment screw (78) is threadedly connected to the middle part of the pitch axis (77); a height adjustment scale (96) is fixed on the side elevation of the height fine adjustment mechanism (4), and the height adjustment arrow (95) is arranged on the support arm (91), and the height adjustment arrow (95) is used to indicate the height position of the support arm (91) on the height fine adjustment mechanism (4).

10. The sleeper block precise adjustment method for ballastless track paving construction according to claim 7, characterized in that: The height fine adjustment mechanism (4) comprises a telescopic head (41), a telescopic tube seat (42), a height adjustment screw (43), a height adjustment threaded sleeve (44), a height adjustment reducer (45) and a height adjustment motor (46); the telescopic head (41) is slidably connected to the lower end of the telescopic tube seat (42) and is fixedly connected to the height adjustment threaded sleeve (44); the height adjustment motor (46) is fixed to the inner top of the telescopic tube seat (42) and is connected to the height adjustment screw (43) through the height adjustment reducer (45); the height adjustment screw (43) is threadably matched with the height adjustment threaded sleeve (44).

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