A precise adjustment mechanism for sleeper piers used in ballastless track paving construction

Abstract

The present invention belongs to the technical field of ballastless track paving construction, and particularly relates to a precise adjustment mechanism for sleeper piers used in ballastless track paving construction, which is used to adjust the height position and center line position of sleeper blocks, and includes a height precise adjustment mechanism, a center line precise adjustment mechanism, a lifting adjustment mechanism and a transverse groove member; the sleeper block, the test rail and the sleeper fixing frame are connected to each other; the fixed cross bar is arranged in the 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 center line precise adjustment mechanism; the center line precise adjustment mechanism is used to laterally push the fixed cross bar; the center line precise adjustment mechanism and the support box are respectively connected to a lifting adjustment mechanism, and the lifting adjustment mechanism is correspondingly connected to a height precise adjustment mechanism to achieve height adjustment. This solution can precisely adjust the installation position of the sleeper block; it can realize the adjustment of the center line position and height position of a batch of sleeper blocks, thereby improving the speed of ballastless track paving construction and the construction efficiency.

Description

Technical Field

[0001] The present invention belongs to the technical field of ballastless track paving construction, and particularly relates to a sleeper pier fine adjustment mechanism for ballastless track paving construction. Background Art

[0002] With the increase in the running speed of high-speed trains, the requirements for the paving accuracy of ballastless tracks are also getting higher and higher. In the prior art, the height of each sleeper block (also called sleeper pier) is often individually raised by using pads, and a crowbar is used to directly pry the sleeper block to adjust the lateral position of the sleeper block. This method of individually adjusting the lateral position and height position of each sleeper block not only affects the speed of ballastless track paving construction, but also easily causes large errors, thus affecting the upper limit of the safe running speed of track trains. In addition, after the sleeper block is poured with cement, the position is also prone to shift, further affecting the installation accuracy of the sleeper block.

[0003] Therefore, it is necessary to design a sleeper pier fine adjustment mechanism that can accurately adjust the position of the sleeper block and limit the position during the solidification of the concrete poured in the sleeper block. Summary of the Invention

[0004] In order to solve the above problems existing in the prior art, the present solution provides a sleeper pier fine adjustment mechanism for ballastless track paving construction.

[0005] The technical solution adopted by the present invention is as follows:

[0006] A sleeper pier fine adjustment mechanism for ballastless track paving construction, which is used to adjust the height position and center line position of the sleeper block, includes a height fine adjustment mechanism, a center line fine adjustment mechanism, a lifting adjustment mechanism, and a transverse groove member;

[0007] The sleeper block is detachably connected to the test rail; a sleeper fixing frame is connected to the test rail, the test rail is perpendicularly connected to the fixed cross bar of the sleeper fixing frame, and the end of the fixed cross bar extends to the outside of the test rail;

[0008] The fixed cross bar is arranged in the 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 center line fine adjustment mechanism; the center line fine adjustment mechanism is used to laterally push the fixed cross bar; the center line fine adjustment mechanism and the support box are respectively connected to a lifting adjustment mechanism and are height-adjusted by the lifting adjustment mechanism; the lifting adjustment mechanism is correspondingly connected to a height fine adjustment mechanism and is height-adjusted by the height fine adjustment mechanism.

[0009] As an alternative or supplement to the above-mentioned sleeper pier fine-tuning mechanism: The centerline fine-tuning mechanism includes a centering motor, a docking housing sleeve, a centering screw rod, and a centering sliding sleeve; an adjusting piece is fixedly arranged in the inner cavity of the end of the fixed cross bar; the end of the transverse groove member is fixedly connected to the docking housing sleeve; a guiding docking cavity is arranged inside the docking housing sleeve, and the guiding docking cavity is used for inserting the end of the fixed cross bar; a centering screw rod is arranged in the guiding docking cavity, and the centering screw rod is in transmission connection with the centering motor; the centering sliding sleeve is in threaded cooperation with the centering screw rod to control the transverse sliding of the centering sliding sleeve.

[0010] As an alternative or supplement to the above-mentioned sleeper pier fine-tuning mechanism: The fixed cross bar is a square pipe rod; when the centerline fine-tuning mechanism is in use, the centering sliding sleeve extends into the inner cavity of the fixed cross bar, and pushes the fixed cross bar to move transversely through the adjusting piece to adjust the transverse position of the centerline of the sleeper block.

[0011] As an alternative or supplement to the above-mentioned sleeper pier fine-tuning mechanism: A centering scale is arranged on the outer wall of the middle part of the fixed cross bar; a centering arrow is arranged on the side wall of the transverse groove member; the centering arrow points to the centering scale to facilitate observing the relative position of the fixed cross bar and the transverse groove member.

[0012] As an alternative or supplement to the above-mentioned sleeper pier fine-tuning mechanism: The support box adopts a docking housing sleeve.

[0013] As an alternative or supplement to the above-mentioned sleeper pier fine-tuning mechanism: The lifting and adjusting mechanism includes a support arm, a lifting sliding sleeve, an end seat, and a lifting screw rod; the lifting screw rod is arranged vertically, and both the upper and lower ends of the lifting screw rod are rotatably connected to the end seat, and the end seat is fixed on the side vertical surface of the height fine-tuning mechanism; the lifting sliding sleeve is in threaded cooperation with the lifting screw rod and is fixedly connected to the support arm; the support arm is rotatably connected to the docking housing sleeve.

[0014] As an alternative or supplement to the above-mentioned sleeper pier fine-tuning mechanism: A pitching shaft capable of lifting and moving is arranged on the docking housing sleeve, and the end of the pitching shaft is vertically and rotatably connected to the support arm; a pitching adjusting screw rod is rotatably connected to the docking housing sleeve, and the pitching adjusting screw rod is in threaded connection with the middle part of the pitching shaft; the lifting and adjusting mechanism further includes a height-adjusting arrow and a height-adjusting scale; the height-adjusting scale is fixed on the side vertical surface of the height fine-tuning mechanism, and the height-adjusting arrow is arranged on the support arm, and the height-adjusting arrow is used to indicate the height position of the support arm on the height fine-tuning mechanism.

[0015] As an alternative or supplement to the above-mentioned sleeper pier fine-tuning mechanism: The height fine-tuning mechanism includes a telescopic head, a telescopic pipe seat, a height-adjusting screw rod, a height-adjusting threaded sleeve, a height-adjusting speed reducer, and a height-adjusting motor; the telescopic head is slidably connected to the lower end of the telescopic pipe seat and is fixedly connected to the height-adjusting threaded sleeve; the height-adjusting motor is fixed on the inner top of the telescopic pipe seat and is connected to the height-adjusting screw rod through the height-adjusting speed reducer; the height-adjusting screw rod is in threaded cooperation with the height-adjusting threaded sleeve.

[0016] As an alternative or supplement to the above-mentioned sleeper pier fine adjustment mechanism: The ballastless track is installed on a U-shaped ballastless track base, and one or more track installation platforms are provided at the bottom of the groove of the ballastless track base; the lower end of the telescopic head is fixedly connected with an L-shaped bracket, the lower end of the telescopic head and the horizontal part of the L-shaped bracket are abutted against the top surface of the track installation platform, and the vertical part of the L-shaped bracket is abutted against the side vertical surface of the track installation platform through a tightening screw, and the tightening screw is threadedly connected with the L-shaped bracket.

[0017] As an alternative or supplement to the above-mentioned sleeper pier fine adjustment mechanism: A pulling frame or an inclined pull rod is provided at the upper end of the telescopic pipe seat; the pulling frame includes a hook, a pulling sleeve and a pulling threaded rod, and pulling threaded rods are respectively threadedly connected to both ends of the pulling sleeve; the thread directions of the two pulling threaded rods are opposite, one pulling threaded rod is connected to the telescopic pipe seat, and the other pulling threaded rod is connected to the hook, and the hook is used for hanging on the water retaining edge of the ballastless track base; one end of the inclined pull rod can be connected to the track installation platform and the other end can be connected to the telescopic pipe seat.

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

[0019] This solution can accurately adjust the installation position of the sleeper blocks. During the ballastless track paving construction, it can better meet the requirements of high-speed or ultra-high-speed train tracks for the ballastless track; this solution can adjust the center line position and height position of a batch of sleeper blocks through the test track, thereby improving the speed of the ballastless track paving construction, avoiding the influence of adjusting each sleeper block on the construction speed, improving the construction efficiency, and because of the positioning through the test track, it can reduce the position deviation of the sleeper blocks during the pouring of cement and ensure the installation accuracy. Description of the Drawings

[0020] In order to more clearly illustrate the technical solutions in the embodiments of this solution or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art.

[0021] Figure 1 It is a usage state diagram of the sleeper pier fine adjustment mechanism;

[0022] Figure 2 It is a structural schematic diagram of the sleeper pier fine adjustment mechanism;

[0023] Figure 3 It is a combined structure diagram of a test steel rail, sleeper blocks and a sleeper fixing frame;

[0024] Figure 4 It is a structural schematic diagram of the sleeper fixing frame;

[0025] Figure 5 It is a combined structure diagram of a center line fine adjustment mechanism, a lifting adjustment mechanism and a height fine adjustment mechanism;

[0026] Figure 6 It is a sectional view of a highly precise adjustment mechanism;

[0027] Figure 7 It is a diagram showing the usage state of the center line precise adjustment mechanism;

[0028] Figure 8 It is a schematic structural diagram of the center line precise adjustment mechanism;

[0029] Figure 9 It is a schematic structural diagram of the detection mechanism;

[0030] Figure 10 It is a schematic structural diagram of the lifting fixture.

[0031] In the figure: 1 - formwork; 2 - ballastless track base; 21 - water retaining edge; 22 - sleeper casting table; 23 - track installation table; 3 - lifting fixture; 31 - cushion pipe; 32 - locking screw; 33 - hanger; 34 - U-shaped hook; 4 - highly precise adjustment mechanism; 41 - telescopic head; 42 - telescopic pipe seat; 43 - height adjustment screw; 44 - height adjustment thread sleeve; 45 - height adjustment reducer; 46 - height adjustment motor; 47 - electrical accessories; 48 - accessory protection shell; 5 - support box; 6 - transverse groove member; 61 - centering arrow; 7 - center line precise adjustment mechanism; 71 - centering motor; 72 - centering reducer; 73 - docking shell sleeve; 74 - centering screw; 75 - guiding docking cavity; 76 - centering sliding sleeve; 77 - pitching axis; 78 - pitching adjustment screw; 8 - diagonal tie rod; 9 - lifting adjustment mechanism; 91 - support arm; 92 - lifting sliding sleeve; 93 - end seat; 94 - lifting screw; 95 - height adjustment arrow; 96 - height adjustment scale; 10 - L-shaped bracket; 101 - tightening screw; 11 - sleeper block; 12 - control box; 13 - test rail; 14 - sleeper fixing frame; 141 - fixing cross bar; 142 - wedge block; 143 - anti-slip cushion block; 144 - positioning hole; 145 - centering scale; 146 - T-shaped groove; 147 - adjusting piece; 15 - detection mechanism; 151 - detection vehicle; 152 - towing vehicle; 153 - barcode scanner; 154 - barcode scanning frame; 16 - towing frame; 161 - hook; 162 - towing sleeve; 163 - towing threaded rod. Specific implementation manners

[0032] Next, the technical solutions in this embodiment will be clearly and completely described in conjunction with the accompanying drawings. The described embodiments are only a part of the embodiments, rather than all of them. Based on the embodiments in this solution, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of this solution.

[0033] Embodiment 1

[0034] As Figures 1 to 10As shown in the figure, in this embodiment, a paving system for ballastless track paving construction is designed, which includes a test sample steel rail 13, a sleeper fixing frame 14, and a sleeper pier fine adjustment mechanism.

[0035] The test sample steel rail 13 is used to detachably connect a plurality of sleeper blocks 11 and drive the sleeper blocks 11 to shift.

[0036] The sleeper fixing frame 14 The sleeper fixing frame 14 includes a fixed cross bar 141. The fixed cross bar 141 is vertically connected to two test sample steel rails 13 and fixes the relative positions of the two test sample steel rails 13.

[0037] The sleeper pier fine adjustment mechanism is used to adjust the height position and center line position of the test sample steel rail 13. Specifically, the structure in Embodiment 5 can be adopted, and details are not described here.

[0038] When the paving system in this embodiment is in use, it includes the following steps:

[0039] S1: Place the test sample steel rail 13 on the pre-arranged sleeper blocks 11 (also called sleeper piers) and connect and fix them; connect the lifting fixture 3 to the test sample steel rail 13. The lifting fixture 3 can adopt the structure in Embodiment 2. Use a lifting tool to connect the lifting fixture 3 to lift the test sample steel rail 13 and the sleeper blocks 11 together to the track installation table 23 of the ballastless track base 2. The two test sample steel rails 13 can be connected and fixed through the sleeper fixing frame 14 in Embodiment 4.

[0040] S2: After manually removing the lifting fixture 3, place the detection mechanism 15 on the test sample steel rail 13. The detection mechanism 15 can adopt the structure in Embodiment 4. The detection mechanism 15 walks along the test sample steel rail 13 and detects the current height and current center line position at different positions of the test sample steel rail 13; the corresponding control terminal (tablet, industrial computer, etc.) calculates the required height adjustment height and center adjustment distance of the test sample steel rail 13 according to the preset height and preset center line position.

[0041] S3: According to the height adjustment height and center adjustment distance, adjust the height and center of the test sample steel rail 13. The height adjustment and center adjustment can be adjusted manually or by using the sleeper pier fine adjustment mechanism in Embodiment 5 to achieve precise adjustment of the position of the sleeper blocks 11.

[0042] S4: When the position adjustment of the sleeper blocks 11 is completed, install the formwork 1 on the opposite sides of the track blocks and pour concrete between the formwork 1 to form a sleeper pouring platform 22; after the sleeper pouring platform 22 solidifies and forms, disconnect the connection between the test sample steel rail 13 and the sleeper blocks 11 and use the lifting fixture 3 to lift the test sample steel rail 13 away, and then the batch installation and precise installation of the next round of sleeper blocks 11 can be carried out.

[0043] After the above steps S1 - S3, the precise adjustment of the position of the sleeper block 11 can be achieved. After the above steps S1 - S4, the paving of the sleeper block 11 on the ballastless track base 2 can be achieved.

[0044] Embodiment 2

[0045] As Figure 10 shown, in this embodiment, a lifting fixture 3 is designed. The lifting fixture 3 includes components such as a locking screw 32, a lifting frame 33, and a U - shaped hook 34.

[0046] The lifting frame 33 is a frame structure connected by rod materials. A U - shaped hook is respectively arranged at each of the four corners of the lifting frame 33. The U - shaped opening of the U - shaped hook faces downward, and a part of the pipe rod of the lifting frame 33 is embedded inside the U - shaped hook. The inner wall of the U - shaped hook and the side wall of the lifting frame 33 are tightened against each other through a spacer pipe 31.

[0047] On both sides of the U - shaped opening of the U - shaped hook, a folding hook and a locking screw 32 are respectively arranged. The folding hook bends inward, so that the folding hook can tighten against one side of the web of the specimen rail 13. The locking screw 32 is horizontally arranged and is in threaded cooperation with the U - shaped hook. When the locking screw 32 is tightened, the locking screw 32 tightens against the other side of the web of the specimen rail 13, thereby realizing the fixed connection between the lifting fixture 3 and the specimen rail 13.

[0048] Embodiment 3

[0049] As Figure 4 shown, in this embodiment, a sleeper fixing frame 14 is designed, which includes components such as a fixed cross - bar 141, a wedge - shaped block 142, and an anti - slip cushion block 143.

[0050] There are two specimen rails 13 arranged side by side. A number of sleeper blocks 11 are fixedly connected below the specimen rails 13. The specimen rail 13 includes parts such as a rail base, a web, and a rail head. The rail head is located above the rail base, and the web is located between the rail base and the rail head.

[0051] The fixed cross - bar 141 has a long - rod structure and can specifically adopt a square - tube structure. The fixed cross - bar 141 is provided with two T - shaped grooves, which are respectively located at the left and right ends of the fixed cross - bar 141. The T - shaped grooves are perpendicular to the fixed cross - bar 141. The width of the bottom of the T - shaped groove is greater than the width of the groove opening. The width of the bottom of the T - shaped groove is greater than the width of the rail base. The width of the groove opening of the T - shaped groove can be less than the width of the rail base, and the width of the groove opening of the T - shaped groove is greater than the thickness of the web. The groove opening direction of the T - shaped groove faces upward, and the distance between the two T - shaped grooves on the fixed cross - bar 141 is equivalent to the distance between the two specimen rails 13.

[0052] When the sleeper fixing bracket 14 is connected to the test rail 13, the rail base of the test rail 13 extends into the T-shaped groove, and anti-slip pads 143 are respectively padded on the inner and outer sides of the rail waist. The side surface of the anti-slip pad 143 abuts against the rail waist of the test rail 13. Then, the wedge block 142 is inserted between the anti-slip pad 143 and the side wall of the T-shaped groove, and a tool can be used to hammer the wedge block 142 so that one side of the wedge block 142 abuts tightly against the anti-slip pad 143 and the other side abuts tightly against the side wall of the T-shaped groove. Through the above steps, the fixed connection between the sleeper fixing bracket 14 and the test rail 13 can be achieved.

[0053] In both T-shaped grooves, the wedge block 142 and the wedge block 142 are needed to abut tightly against the inner and outer sides of the rail waist of the test rail 13, so as to realize the fixation of the sleeper fixing bracket 14 and the two test rails 13.

[0054] In addition, a positioning hole 144 with an internal thread can be provided on the wedge block 142, and a waist-shaped hole is provided on the anti-slip pad 143; then a screw is used to pass through the positioning hole 144 and the waist-shaped hole and abut tightly against the rail waist to reduce the probability of the wedge block 142 becoming loose. When the wedge block 142 has a tendency to slide along the length direction of the test 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.

[0055] A centering scale 145 is provided on the outer wall of the middle part of the fixed cross bar 141. By using the centering scale 145, it is possible to assist in judging the lateral adjustment distance (i.e., the centering position) when the test rail 13 is adjusted in position.

[0056] Anti-slip lines are provided on the side of the anti-slip pad 143 facing the rail waist. A guide groove is provided on the side of the anti-slip pad 143 facing the wedge block 142, and a convex strip that is slidably matched with the guide groove is provided on the side of the wedge block 142 facing the anti-slip pad 143.

[0057] During use, generally, a plurality of sleeper fixing brackets 14 are installed in the length direction of the test rail 13. When a tool for assisting in adjusting the position of the ballastless track applies force, the force will directly act on the sleeper fixing bracket 14. Compared with directly acting on the ballastless track, the risk of hidden damage to the ballastless track is reduced.

[0058] The fixed cross bar 141 of the sleeper fixing bracket 14 is fixedly connected perpendicular to the test rail 13, and both ends of the fixed cross bar 141 extend to the outside of the test rail 13; in step S3 of Embodiment 3, a plurality of sleeper pier fine adjustment mechanisms can be used to adjust the position of the sleeper fixing bracket 14 to achieve height adjustment and centering of different positions of the test rail 13.

[0059] Embodiment 4

[0060] AsFigure 9 As shown in the figure, in this embodiment, a detection mechanism 15 is designed; the detection mechanism 15 includes components such as a detection vehicle 151, a tractor 152, a barcode scanner 153, and a barcode scanning frame 154.

[0061] A two-dimensional code is installed on the sleeper pier fine-tuning mechanism, and the two-dimensional code information corresponds to the preset number of the sleeper pier fine-tuning mechanism.

[0062] The tractor 152 is connected to the detection vehicle 151 through a towing bar. A barcode scanning frame 154 is provided on the detection vehicle 151, and a barcode scanner 153 is installed on the barcode scanning frame 154.

[0063] When the detection vehicle 151 passes by the sleeper pier fine-tuning mechanism under the traction of the tractor 152, the barcode scanner 153 can scan the two-dimensional code, and thus the number and position of the sleeper pier fine-tuning mechanism can be determined. The position of the detection vehicle 151 during barcode scanning is the position of the sleeper pier fine-tuning mechanism. Since the distances for height adjustment and center adjustment are different at different positions of the test rail, according to the positions of each sleeper pier fine-tuning mechanism, it is convenient to control each sleeper pier fine-tuning mechanism separately, so that different positions of the test rail 13 reach the preset height and center line position.

[0064] Embodiment 5

[0065] As Figures 1 to 8 shown in the figure, in this embodiment, a sleeper pier fine-tuning mechanism is designed, and the sleeper pier fine-tuning mechanism can be applied to Embodiments 1 to 4.

[0066] The sleeper pier fine-tuning mechanism in this embodiment includes components such as a height fine-tuning mechanism 4, a center line fine-tuning mechanism 7, a lifting adjustment mechanism 9, and a transverse groove member 6.

[0067] The transverse groove member 6 is a groove member with an upward groove opening. During 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 within the transverse groove member 6, thereby realizing the adjustment of the left and right positions. The transverse groove member 6 provides support and guidance for the fixed cross bar 141, and a centering arrow 61 is provided 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 between the sleeper fixing frame 14 and the transverse groove member 6.

[0068] One end of the transverse groove member 6 is fixedly connected to a support box 5, and the other end is fixedly connected to the center line fine-tuning mechanism 7; the center line fine-tuning mechanism 7 is used to laterally push the fixed cross bar 141; the center line fine-tuning mechanism 7 and the support box 5 are respectively connected to a lifting adjustment mechanism 9 and are height-adjusted by the lifting adjustment mechanism 9; the lifting adjustment mechanism 9 is correspondingly connected to a height fine-tuning mechanism 4 and is height-adjusted by the height fine-tuning mechanism 4.

[0069] The center line fine adjustment mechanism 7 includes components such as a center adjustment motor 71, a docking housing sleeve 73, a center adjustment lead screw, and a center adjustment sliding sleeve 76. The fixed cross bar 141 has a square tube structure. The side of the center adjustment sliding sleeve 76 abuts against the tube wall of the fixed cross bar 141 and restricts the rotation of the center adjustment sliding sleeve 76. An adjusting piece 147 is fixedly arranged in the tube cavity at the end of the fixed cross bar 141. The adjusting piece 147 is fixed by screws that pass through the side wall of the fixed cross bar 141 and are driven into the edge of the adjusting piece 147. A round hole is provided in the middle of the adjusting piece 147. The center adjustment sliding sleeve 76 is T-shaped, and a part of the center adjustment sliding sleeve 76 can be inserted into the round hole.

[0070] A guiding docking cavity 75 is arranged inside the docking housing sleeve 73. The guiding docking cavity 75 has a square cavity structure. The end of the transverse groove member 6 is inserted into the guiding docking cavity 75 and fixed. During use, the end of the fixed cross bar 141 is also inserted into the guiding docking cavity 75.

[0071] The center adjustment lead screw is arranged in the guiding docking cavity 75 and is in transmission connection with the center adjustment motor 71. When the center adjustment motor 71 is started, the center adjustment lead screw can rotate under its drive. The center adjustment sliding sleeve 76 is in threaded cooperation with the center adjustment lead screw. A gear transmission mechanism is arranged on the side wall of the docking housing sleeve 73. The output end of the gear transmission mechanism is fixedly connected to the center adjustment lead screw, and the input end of the gear transmission mechanism is fixedly connected to the center adjustment motor 71.

[0072] A plurality of fixed cross bars 141 are fixed in the length direction of the test rail 13. A center line adjustment mechanism is correspondingly arranged at the end of each fixed cross bar 141. All the center line adjustment mechanisms can control the fixed cross bar 141 to move in the same transverse direction. The upper part of the docking housing sleeve 73 has a connecting part for external connection to facilitate connecting the center line adjustment mechanism to other components.

[0073] The support box 5 has the same structure as the docking housing sleeve 73 of the center line fine adjustment mechanism 7 and is fixedly connected to the other end of the transverse groove member 6.

[0074] An adjusting piece 147 is fixedly arranged in the tube cavity at the end of the fixed cross bar 141; the end of the transverse groove member 6 is fixedly connected to the docking housing sleeve 73; a guiding docking cavity 75 is arranged inside the docking housing sleeve 73 for the end of the fixed cross bar 141 to be inserted; a center adjustment lead screw is arranged in the guiding docking cavity 75 and is in transmission connection with the center adjustment motor 71; the center adjustment sliding sleeve 76 is in threaded cooperation with the center adjustment lead screw to control the transverse sliding of the center adjustment sliding sleeve 76. When the center line fine adjustment mechanism 7 is in use, the center adjustment sliding sleeve 76 extends into the tube cavity of the fixed cross bar 141 and pushes the fixed cross bar 141 to move transversely through the adjusting piece 147 to adjust the transverse position of the center line of the sleeper block 11.

[0075] When the center line adjustment mechanism is in use, the fixed cross bar 141 is placed into the transverse groove member 6, and the end of the fixed cross bar 141 is inserted into the guiding and docking cavity 75, so that the centering sliding sleeve 76 extends into the lumen of the fixed cross bar 141 to be inserted into the round hole of the adjusting piece 147. At the same time, one end of the centering sliding sleeve 76 abuts against the end face of the adjusting piece 147, and the side surface of the centering sliding sleeve 76 abuts against the side wall of the lumen of the fixed cross bar 141. When the centering screw rod rotates driven by the centering motor 71, the centering sliding sleeve 76 can slide horizontally relative to the centering screw rod, and push the fixed cross bar 141 to move horizontally through the adjusting piece 147, so as to adjust the horizontal position of the center line of the test rail 13. When the installation position of the center line adjustment mechanism is turned to the other end of the fixed cross bar 141, the horizontal position of the center line of the test rail 13 will be adjusted in the opposite direction.

[0076] The lifting and adjusting mechanism 9 includes components such as a support arm 91, a lifting sliding sleeve 92, an end seat 93, a lifting screw rod 94, a height adjustment arrow 95 and a height adjustment scale 96. The lifting screw rod 94 is arranged vertically, and both the upper and lower ends of the lifting screw rod 94 are rotatably connected to the end seat 93, and the end seat 93 is fixed to the side vertical surface of the height fine adjustment mechanism 4; the lifting sliding sleeve 92 is in threaded cooperation with the lifting screw rod 94 and is fixedly connected to the support arm 91; the support arm 91 is rotatably connected to the docking housing sleeve 73; a pitching shaft 77 that can move up and down is arranged on the docking housing sleeve 73, and the end of the pitching shaft 77 is vertically and rotatably connected to the support arm 91; a pitching adjustment screw rod 78 is rotatably connected to the docking housing sleeve 73, and the pitching adjustment screw rod 78 is in threaded connection with the middle part of the pitching shaft 77. When the pitching adjustment screw rod 78 is rotated, the vertical lifting movement of the pitching shaft 77 can be controlled, and since the pitching shaft 77 is rotatably connected to the support arm 91, the docking housing sleeve 73 can be adjusted in the pitching angle relative to the support arm 91. The height adjustment scale 96 is fixed to the side vertical surface 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.

[0077] The height fine adjustment mechanism 4 includes a telescopic head 41, a telescopic pipe seat 42, a height adjustment screw rod 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 pipe 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 pipe seat 42 and is connected to the height adjustment screw rod 43 through the height adjustment reducer 45; the height adjustment screw rod 43 is in threaded cooperation with the height adjustment threaded sleeve 44.

[0078] To fix the highly precise adjustment mechanism 4: A lower end of the telescopic head 41 is fixedly connected to an L-shaped bracket 10. A lower end of the telescopic head 41 and a horizontal portion of the L-shaped bracket 10 abut against a top surface of the track mounting table 23. A vertical portion of the L-shaped bracket 10 abuts against a side vertical surface of the track mounting table 23 through a tightening screw 101. The tightening screw 101 is threadedly connected to the L-shaped bracket 10. An upper end of the telescopic pipe seat 42 is provided with a pulling frame 16. The pulling frame 16 includes a hook 161, a pulling sleeve 162, and a pulling threaded rod 163. The two ends of the pulling sleeve 162 are respectively threadedly connected with the pulling threaded rod 163. Thread directions of the two pulling threaded rods 163 are opposite. One pulling threaded rod 163 is connected to the telescopic pipe seat 42, and the other pulling threaded rod 163 is connected to the hook 161. The hook 161 is used for hanging on a water retaining edge 21 of the ballastless track base 2. An upper end of the telescopic pipe seat 42 may also be provided with an inclined pull rod 8. One end of the inclined pull rod 8 is connected to the track mounting table 23, and the other end is connected to the telescopic pipe seat 42.

[0079] A control box 12 may be provided on a side surface of the test sample rail 13. A PLC controller is arranged in the control box 12. The PLC controller is used for controlling on-off power and forward and reverse rotations of the height adjustment motor 46 and the centering motor 71, so as to realize automatic height adjustment and automatic centering. The PLC controller may be externally communicatively connected through a wireless module such as Bluetooth, so as to realize remote control.

[0080] The above embodiments are merely examples for clear illustration and are not limitations on the implementation manners; it is not necessary and impossible to enumerate all the implementation manners here. Obvious changes or variations derived therefrom are still within the protection scope of the present technology.

Claims

1. A fine adjustment mechanism for sleeper piers in ballastless track paving construction, which is used to adjust the height position and center line position of the sleeper block (11), and is characterized in that: It includes a height fine-tuning mechanism (4), a center line fine-tuning mechanism (7), a lifting adjustment mechanism (9) and a transverse groove member (6); The sleeper block (11) is detachably connected to the specimen steel rail (13); a sleeper fixing frame (14) is connected to the specimen steel rail (13), the specimen steel rail (13) is perpendicularly connected to the fixing cross bar (141) of the sleeper fixing frame (14), and the end of the fixing cross bar (141) extends to the outside of the specimen steel rail (13); The fixing 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-tuning mechanism (7); the center line fine-tuning mechanism (7) is used to laterally push the fixing cross bar (141); the center line fine-tuning mechanism (7) and the support box (5) are respectively connected to a lifting adjustment mechanism (9), and are height-adjusted by the lifting adjustment mechanism (9); the lifting adjustment mechanism (9) is correspondingly connected to a height fine-tuning mechanism (4), and is height-adjusted by the height fine-tuning mechanism (4); The center line fine-tuning mechanism (7) includes a centering motor (71), a docking housing sleeve (73), a centering lead screw and a centering sliding sleeve (76); the end of the transverse groove member (6) is fixedly connected to the docking housing sleeve (73); a guiding docking cavity (75) is arranged inside the docking housing sleeve (73), and the guiding docking cavity (75) is used for the end of the fixing cross bar (141) to be inserted; a centering lead screw is arranged in the guiding docking cavity (75), and the centering lead screw is in transmission connection with the centering motor (71); the centering sliding sleeve (76) is in threaded cooperation with the centering lead screw to control the lateral sliding of the centering sliding sleeve (76); The fixing cross bar (141) is a square pipe rod; an adjusting piece (147) is fixedly arranged in the pipe cavity at the end of the fixing cross bar (141); A centering scale (145) is arranged on the outer wall of the middle part of the fixing cross bar (141); a centering arrow (61) is arranged on the side wall of the transverse groove member (6); The lifting adjustment mechanism (9) includes a support arm (91), a lifting sliding sleeve (92), an end seat (93) and a lifting screw rod (94); the lifting screw rod (94) is arranged vertically, and the upper and lower ends of the lifting screw rod (94) are rotatably connected to the end seat (93), and the end seat (93) is fixed on the side vertical surface of the height fine-tuning mechanism (4); the lifting sliding sleeve (92) is in threaded cooperation with the lifting screw rod (94) and is fixedly connected to the support arm (91); the support arm (91) is rotatably connected to the docking housing sleeve (73); The height fine-tuning mechanism (4) includes a telescopic head (41), a telescopic pipe seat (42), a height-adjusting screw rod (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 pipe 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 pipe seat (42) and is connected to the height-adjusting screw rod (43) through the height-adjusting reducer (45); the height-adjusting screw rod (43) is in threaded cooperation with the height-adjusting threaded sleeve (44).

2. The sleeper pier fine adjustment mechanism for ballastless track paving construction according to claim 1, characterized in that: When the center line fine-tuning mechanism (7) is in use, the center-adjusting sliding sleeve (76) extends into the lumen of the fixed cross bar (141), and the fixed cross bar (141) is pushed to move laterally through the adjusting piece (147) to adjust the lateral position of the center line of the sleeper block (11).

3. The sleeper pier fine adjustment mechanism for ballastless track paving construction according to claim 1, characterized in that: The center-adjusting arrow (61) points to the center-adjusting scale (145) to facilitate observing the relative position of the fixed cross bar (141) and the lateral groove member (6).

4. The sleeper pier fine adjustment mechanism for ballastless track paving construction according to any one of claims 1-3, characterized in that: A pitching shaft (77) capable of lifting and moving is provided on the docking housing sleeve (73), and the end of the pitching shaft (77) is vertically and rotatably connected to the support arm (91); a pitching adjusting screw (78) is rotatably connected to the docking housing sleeve (73), and the pitching adjusting screw (78) is threadedly connected to the middle part of the pitching shaft (77); the lifting and adjusting mechanism (9) further includes a height-adjusting arrow (95) and a height-adjusting scale (96); the height-adjusting scale (96) is fixed on the side vertical surface of the height fine-tuning mechanism (4), and the height-adjusting arrow (95) is arranged on the support arm (91), and the height-adjusting arrow (95) is used to indicate the height position of the support arm (91) on the height fine-tuning mechanism (4).

5. The sleeper pier fine adjustment mechanism for ballastless track paving construction according to claim 4, characterized in that: The ballastless track is installed on the U-shaped ballastless track base (2), and one or more track installation platforms (23) are arranged at the bottom of the groove of the ballastless track base (2); 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 abutted against the top surface of the track installation platform (23), and the vertical part of the L-shaped bracket (10) is abutted against the side vertical surface of the track installation platform (23) through a tightening screw (101), and the tightening screw (101) is threadedly connected with the L-shaped bracket (10).

6. The sleeper pier fine adjustment mechanism for ballastless track paving construction according to claim 5, characterized in that: A pulling frame (16) or an inclined pull rod (8) is arranged at the upper end of the telescopic pipe seat (42); the pulling frame (16) includes a hook (161), a pulling sleeve (162) and a pulling threaded rod (163), and the pulling threaded rod (163) is threadedly connected to both ends of the pulling sleeve (162); the thread directions of the two pulling threaded rods (163) are opposite, one pulling threaded rod (163) is connected to the telescopic pipe seat (42), and the other pulling threaded rod (163) is connected to the hook (161), and the hook (161) is used for hanging on the water retaining edge (21) of the ballastless track base (2); one end of the inclined pull rod (8) can be connected to the track installation platform (23), and the other end can be connected to the telescopic pipe seat (42).

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