Automatic flipping and positioning device for sleeper anchoring

Abstract

The invention relates to the technical field of rail sleeper anchoring, and discloses an automatic flipping and positioning device for rail sleeper anchoring, comprising a rail sleeper anchoring assembly line, wherein a conveying chain for conveying sleepers is arranged on the rail sleeper anchoring assembly line, a flipping shaft rod and a cross bracket arranged at both ends of the flipping shaft rod are installed on the rail sleeper anchoring assembly line, wherein the cross bracket comprises a square block sleeved on the flipping shaft rod, and four flaps respectively connected to four angles of the square block and used for flipping the sleeper, an inner groove for accommodating a first flipping auxiliary device is provided on the end surface of the square block between adjacent flaps, a top plate and a support plate are inclined to fit and support the sleeper during the flipping process, so that the sleeper will not fall suddenly during the flipping process, and the limited flipping of the sleeper also avoids impact force, thereby solving the problem of damage to the sleeper caused by impact force, and will not cause impact to the square block and the flap, thereby avoiding damage and deformation of the square block and the flap.

Description

Technical Field

[0001] The invention relates to the technical field of sleeper anchoring, and in particular to an automatic flipping and positioning device for sleeper anchoring. Background Art

[0002] When carrying out the reverse anchoring method of production, workers need to place the spike anchoring bracket in the sleeper rail groove on the anchoring pedestal, then flip the sleeper 180° with the bottom facing upward, put the spike in the reserved hole of the sleeper, and pour the boiled sulfur cement mortar into the reserved hole. After the mortar hardens, flip the sleeper 180° again with the top facing upward. The existing technology automatically anchors the sleepers through an automated sleeper anchoring line. In the automated sleeper anchoring line, two cross sleeper flipping machines are set up for the two 180° flips during the sleeper anchoring process, and the sleepers are flipped continuously in sequence through the cross bracket.

[0003] When the sleeper is flipped, the cross bracket cannot limit the flipping of the sleeper. During its 180° flipping process, the center of gravity shifts, and the flipping and falling speed of the sleeper is greater than the rotation speed of the cross bracket, so that its falling potential energy is converted into kinetic energy and produces inelastic deformation with the cross bracket. The impact force generated when the sleeper falls exceeds its own weight. After the sleeper rolls down, the sleeper collides with the cross bracket for the first time. The impact force brought by the conversion of the sleeper potential energy into kinetic energy causes the sleeper to collide with the cross bracket when it flips over, causing damage to the sleeper itself and affecting the quality of the sleeper.

[0004] Therefore, an automatic flip positioning device for sleeper anchoring is invented. Summary of the invention

[0005] The purpose of the present invention is to provide an automatic flipping and positioning device for anchoring sleepers, so as to solve the problem that the sleepers hit the cross brackets while rolling down, and the impact force brought by the conversion of their potential energy into kinetic energy causes the sleepers to collide with the cross brackets when they fall, causing damage to themselves and affecting the quality of the sleepers.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an automatic flipping and positioning device for anchoring sleepers, comprising a sleeper anchoring assembly line, a conveying chain for conveying sleepers is arranged on the sleeper anchoring assembly line, a flipping shaft rod and a cross bracket arranged at both ends of the flipping shaft rod are installed on the sleeper anchoring assembly line, the cross bracket comprises a square block sleeved on the flipping shaft rod, and four flaps respectively connected to four angles of the square block and used for flipping sleepers, an inner groove for accommodating a first flipping auxiliary device is opened on the end surface of the square block between adjacent flaps, and inner grooves for accommodating a second flipping auxiliary device are arranged on both sides of each flap;

[0007] The first flip auxiliary device comprises a top plate, the fitting surface of the top plate and the sleeper exceeds the end surface of the square block, and a driving assembly for driving the top plate to rotate. The second flip auxiliary device comprises a support plate with one end hinged to the flap, and a driving mechanism for driving the support plate to lift. The flip shaft rod can rotate by itself. In the process of driving the square block and the flap to flip, the top plate and the support plate are respectively pushed out to fit the two sides of the sleeper. In the process of flipping the sleeper, the top plate and the support plate adjust their inclinations respectively. The end surfaces of one side of the top plate and the support plate are always in contact with the two side surfaces of the sleeper.

[0008] The rotation of the flap is used to drive the sleeper to flip 180° from the initial top-up state to the bottom-up state. During the process of the sleeper flipping 90° from the initial state, the support plate on the bottom of the sleeper always supports the bottom surface of the sleeper. During the process of the sleeper flipping 90° again, the support plate on the top surface of the sleeper always supports the top surface of the sleeper. During the process of the sleeper flipping 180°, the top plate always supports the end surface of one side of the sleeper.

[0009] Preferably, one end of the flip shaft is connected to the power shaft of the conveyor chain through a belt, and a protrusion for positioning and loading is provided on the conveyor chain.

[0010] Preferably, four first turning auxiliary devices are provided on each of the square blocks.

[0011] Preferably, the driving assembly includes a driving bracket, a pushing cylinder, a driving plate and a limiting card plate, one end of the driving bracket is connected to the pushing cylinder, driving plates are installed on the inner ends of both sides of the driving bracket, and limiting card plates are extended at both ends of the driving plate.

[0012] Preferably, both ends of the top plate are connected with an arc seat, and both ends of the arc seat are installed with a linkage ring plate through a support rod, and a half circle of linkage tooth grooves are arranged on the linkage ring plate.

[0013] Preferably, when the top plate is parallel to the inner groove on the end face of the square block, the limiting clamps at both ends of the driving plate are in contact with the outer wall of the linkage ring plate, and the inner wall of the inner groove of the square block is provided with a sliding groove for limiting the movement of the driving bracket, and the driving bracket is provided with a sliding block inserted in the sliding groove.

[0014] Preferably, strip-shaped tooth grooves are provided on the inner walls at both ends of the driving plate, and the strip-shaped tooth grooves at both ends of the driving plate are movably engaged with the half-circle linkage tooth grooves provided on the two linkage ring plates respectively.

[0015] Preferably, the driving mechanism includes a driving screw and a limiting rod arranged side by side, and a left movable seat and a right movable seat sleeved on the driving screw and the limiting rod, and a left support rod and a right support rod are respectively hingedly installed on the left movable seat and the right movable seat, and one end of the left support rod and the right support rod are hinged to one end of the support plate.

[0016] Preferably, one end of the driving screw is connected to the motor, and two sections of threads are arranged on the driving screw. The two sections of threads are arranged in opposite directions to drive the left movable seat and the right movable seat to move towards or oppositely, and the pitches of the two sections of threads are different.

[0017] Preferably, notches for installing the second turning auxiliary device are provided at both ends of the flap.

[0018] Technical effects and advantages of the present invention:

[0019] The top plate and the support plate are inclined to fit the sleeper during the flipping process, so that the sleeper will not fall suddenly during the flipping process, and the sleeper limited flipping also avoids impact force, which solves the problem of sleeper damage caused by impact force, and will not cause impact on the square block and the flap, thereby avoiding damage and deformation of the square block and the flap. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 It is a schematic diagram of the installation structure of the first flip assisting device and the second flip assisting device of the present invention;

[0022] Figure 3 It is a cross-sectional view of the local structure of the square block and the flap of the present invention;

[0023] Figure 4 For the present invention Figure 2 A magnified image of point A;

[0024] Figure 5 It is a schematic structural diagram of a first turning assisting device of the present invention;

[0025] Figure 6 It is a schematic diagram of the top plate inclined structure of the present invention;

[0026] Figure 7 It is a side view structural schematic diagram of a first turning assisting device of the present invention;

[0027] Figure 8 For the present invention Figure 7 A magnified view of point B;

[0028] Fig. 9 It is a schematic structural diagram of a second turning assisting device of the present invention;

[0029] Fig.10 It is a flow chart of the sleeper flipping of the present invention.

[0030] In the figure: 1. flip shaft; 2. square block; 21. flip plate; 3. first flip auxiliary device; 31. top plate; 311. arc seat; 312. linkage ring plate; 313. half circle linkage tooth groove; 32. drive assembly; 321. drive bracket; 322. push cylinder; 323. drive plate; 3231. strip tooth groove; 324. limit card plate; 4. second flip auxiliary device; 41. support plate; 42. drive mechanism; 421. drive screw; 422. limit rod; 423. left movable seat; 424. right movable seat; 425. left support rod; 426. right support rod. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] Reference Figures 1 to 10 , provides an automatic flipping and positioning device for sleeper anchoring, including a sleeper anchoring assembly line, a conveyor chain for sleeper transportation is arranged on the sleeper anchoring assembly line, a flipping shaft rod 1 and cross brackets arranged at both ends of the flipping shaft rod 1 are installed on the sleeper anchoring assembly line, one end of the flipping shaft rod 1 is connected to the power shaft of the conveyor chain through a belt, and a positioning and loading protrusion is arranged on the conveyor chain. When the sleeper is conveyed to the conveyor chain, the contact distance between the first sleeper and the flap 21 is controlled by the protrusion. While the conveyor chain conveys the sleeper, it drives the flipping shaft rod 1 to rotate, so that the rotation speed of the square block 2 and the flap 21 matches the speed of the conveyor chain. When the sleeper moves above the flap 21, the rotation of the flap 21 can drive the sleeper to rotate, which is used to realize continuous flipping of multiple sleepers on the conveyor chain.

[0033] The cross bracket includes a square block 2 sleeved on the flip shaft 1, and four flaps 21 respectively connected to the four angles of the square block 2 and used for flipping the sleeper. An inner groove for accommodating the first flip auxiliary device 3 is provided on the end surface of the square block 2 between adjacent flaps 21, and inner grooves for accommodating the second flip auxiliary device 4 are provided on both sides of each flap 21.

[0034] Since the center of gravity of the sleeper shifts during the 180° flipping process, the flipping and falling speed of the sleeper is greater than the rotation speed of the cross bracket, so that the impact force generated when the sleeper falls exceeds its own weight, and it hits the cross bracket while rolling and falling. The prior art provides a buffer pad on one side of the cross bracket to reduce the damage caused by the impact force during the 180° flipping of the sleeper. However, the buffer pad only serves to buffer the impact force. The impact force generated by the fall of the sleeper still exists and will not change. The buffer pad only absorbs some of the impact force and reduces the damage to the sleeper surface. The impact force generated when the sleeper contacts the buffer pad or the cross bracket during the flipping process is changed. Long-term impact on the cross bracket is likely to cause deformation and damage to the cross bracket. Compared with the prior art, the top plate 31 and the support plate 41 in this solution are inclined to each other, and the sleeper is pressed between the top plate 31 and the support plate 41. The top plate 31 and the support plate 41 can adjust their inclinations according to the flipping trajectory of the sleeper. The top plate 31 and the support plate 41 always support the two ends of the sleeper, avoiding the sleeper from suddenly falling due to the shift of the center of gravity during the flipping process, reducing the impact force when the sleeper flips and falls, and solving the problem in the prior art. In order to solve the problem that the sleeper and the flap 21 are damaged by the impact force, the first flip auxiliary device 3 includes a top plate 31, the fitting surface of the top plate 31 and the sleeper exceeds the end surface of the square block 2, and a driving component 32 for driving the top plate 31 to rotate. The second flip auxiliary device 4 includes a support plate 41 hinged to the flap 21 at one end, and a driving mechanism 42 for driving the support plate 41 to lift. The flip shaft rod 1 can rotate by itself. In the process of driving the square block 2 and the flap 21 to flip, the top plate 31 and the support plate 41 are respectively pushed out to fit the two sides of the sleeper, and in the process of flipping the sleeper, the top plate 31 and the support plate 41 are respectively pushed out to fit the two sides of the sleeper. The plate 31 and the support plate 41 adjust the inclination respectively, and the end surfaces of one side of the top plate 31 and the support plate 41 are always in contact with the two side surfaces of the sleeper. The rotation of the flap 21 is used to drive the sleeper to flip 180° from the initial top-up state to the bottom-up state. In the process of the sleeper flipping 90° from the initial state, the support plate 41 on the bottom of the sleeper always supports the bottom surface of the sleeper. In the process of the sleeper flipping 90° again, the support plate 41 on the top surface of the sleeper always supports the top surface of the sleeper. In the process of the sleeper flipping 180°, the top plate 31 always supports the end surface of one side of the sleeper.

[0035] Specifically, in the initial state, the support plate 41 is flush with the end surface of the flap 21, and one end of the top plate 31 is tilted to press and fit against one side of the sleeper. During the rotation of the flap 21, the sleeper tilts along with it, and the support plate 41 presses and fits against the bottom end of the tilted sleeper. During the process of the sleeper flipping 90°, one end of the top plate 31 retracts to be flush with the end surface of the square block 2. During this process, the support plate 41 continues to push out and tilt and always presses and fits against the bottom end of the sleeper. After the sleeper flips 90°, the other support plate 41 pushes out and presses and fits against the top end of the sleeper. The sleeper continues to flip, and the other end of the top plate 31 rotates and tilts. It is inclined to fit and press against the side end of the sleeper. When the sleeper is flipped 90° again, during this process, the other support plate 41 retracts to be flush with the end face of the flap 21, and the other end of the top plate 31 rotates and tilts to always press and fit against the side end of the sleeper. The top plate 31 and the support plate 41 are tilted to fit and support the sleeper during the flipping process, so that the sleeper will not fall suddenly during the flipping process. The limited flipping of the sleeper also avoids impact force, which solves the problem of sleeper damage caused by impact force, and will not cause impact to the square block 2 and the flap 21, avoiding damage and deformation of the square block 2 and the flap 21.

[0036] Four first turning auxiliary devices 3 are arranged on each square block 2 .

[0037] The driving assembly 32 includes a driving bracket 321, a pushing cylinder 322, a driving plate 323 and a limiting card plate 324. One end of the driving bracket 321 is connected to the pushing cylinder 322. Driving plates 323 are installed on the inner ends of both sides of the driving bracket 321. Limiting card plates 324 are extended at both ends of the driving plate 323. The pushing cylinder 322 drives the driving bracket 321 to move back and forth, and then adjusts the driving end of the top plate 31, so that the two ends of the top plate 31 can rotate alternately, thereby improving the convenience of flipping and adapting to the flipping trajectory of the sleeper.

[0038] Both ends of the top plate 31 are connected with an arc seat 311, and both ends of the arc seat 311 are installed with a linkage ring plate 312 through a support rod. A half circle of linkage tooth groove 313 is provided on the linkage ring plate 312. When the top plate 31 rotates, the limit clamping plate 324 is movably engaged with the linkage ring plate 312, and one of the linkage ring plates 312 at both ends serves as the rotation axis. When the linkage ring plate 312 moves to a position engaged with one of the linkage ring plates 312, the engaged linkage ring plate 312 serves as the rotation axis of the top plate 31.

[0039] When the top plate 31 is parallel to the inner groove on the end face of the square block 2, limit support plates that fit with the two ends of the arc seat 311 are provided at both ends of the inner groove of the square block 2. The limit support plates are used to limit the translation of the top plate 31 in the inner groove. The top plate 31 can rotate within the two limit support plates and cannot translate inside it. The limit clamping plates 324 at both ends of the driving plate 323 fit with the outer wall of the linkage ring plate 312. A slide groove for limiting the movement of the driving bracket 321 is provided on the inner wall of the inner groove of the square block 2. A sliding block inserted in the slide groove is provided on the driving bracket 321. When the driving bracket 321 is pushed and moved by the pushing cylinder 322, the sliding blocks at both ends thereof are limited and moved in the slide groove on the inner groove of the square block 2, which effectively limits the entire driving assembly 32, improves the driving stability, and prevents the entire driving assembly 32 from falling off.

[0040] The inner walls at both ends of the driving plate 323 are provided with strip-shaped tooth grooves 3231, and the strip-shaped tooth grooves 3231 at both ends of the driving plate 323 are respectively movably engaged with the half-circle linkage tooth grooves 313 provided on the two linkage ring plates 312. When the driving plate 323 moves, the strip-shaped tooth groove 3231 at one end thereof is engaged with the half-circle linkage tooth groove 313 on one of the linkage ring plates 312. During the movement, the linkage ring plate 312 is driven to rotate, thereby driving the top plate 31 to rotate.

[0041] The driving mechanism 42 includes a driving screw rod 421 and a limiting rod 422 arranged side by side, and a left moving seat 423 and a right moving seat 424 sleeved on the driving screw rod 421 and the limiting rod 422. A left supporting rod 425 and a right supporting rod 426 are respectively hingedly installed on the left moving seat 423 and the right moving seat 424. One end of the left supporting rod 425 and the right supporting rod 426 are both hingedly connected to one end of the support plate 41. The driving screw rod 421 rotates under the drive of the motor, thereby driving the left moving seat 423 and the right moving seat 424 move towards or oppositely. When the left moving seat 423 and the right moving seat 424 move towards each other, the left support rod 425 and the right support rod 426 are driven to tilt in the direction away from the flap 21, pushing the support plate 41 out and opening. When the left moving seat 423 and the right moving seat 424 move oppositely, the left support rod 425 and the right support rod 426 are driven to tilt in the direction close to the flap 21, driving the support plate 41 to retract, and adjusting the fitting inclination according to the flipping state of the sleeper.

[0042] One end of the driving screw rod 421 is connected to the motor, and two sections of thread are arranged on the driving screw rod 421. The two sections of thread are arranged in opposite directions to drive the left moving seat 423 and the right moving seat 424 to move toward or oppositely, and the pitches of the two sections of thread are different. Notches for installing the second flipping auxiliary device 4 are provided at both ends of the flap 21. Due to the different pitches of the two sections of thread, the pitch of one section of thread for driving the right moving seat 424 to move is greater than the pitch of the other section of thread for driving the left moving seat 423 to move. During the rotation of the driving screw rod 421, the moving speed of the left moving seat 423 is slower than the moving speed of the right moving seat 424, and the speed difference is used to adapt the inclination of the ejection of the left support rod 425 and the right support rod 426, so as to facilitate the left support rod 425 and the right support rod 426 to eject at the same time to support the flap 21.

[0043] Reference Figures 1 to 10 , provides a method for using an automatic flipping positioning device for sleeper anchoring, comprising the following steps:

[0044] S1: The conveyor chain on the assembly line conveys a row of sleepers, and when the conveyor chain is driven to move, the belt drives the turning shaft rod 1 to rotate;

[0045] S2: In the initial state, the support plate 41 is flush with the end surface of the flap 21, the sleeper is loaded from the right side of the square block 2 and the flap 21, the push cylinder 322 retracts, and drives the driving bracket 321 to move in the direction of the sleeper loading. When the driving bracket 321 moves, it drives the driving plate 323 and the limiting card plate 324 to move to the right side of the top plate 31, and the limiting card plate 324 limits the outer wall of the linkage ring plate 312 on the right side of the top plate 31. When the driving plate 323 continues to move, the strip tooth groove 3231 on the right side of the linkage ring plate 312 of the top plate 31 is engaged with the half-circle linkage tooth groove 313 on the right side of the linkage ring plate 312 of the top plate 31. During the movement, the right side linkage ring plate 312 is driven to rotate, and then the top plate 31 is driven to rotate clockwise around the right side linkage ring plate 312. The left end of the top plate 31 is tilted and pressed against one side of the sleeper;

[0046] S3: During the rotation of the flap 21, the sleeper tilts together, and the driving screw 421 rotates under the drive of the motor, thereby driving the left moving seat 423 and the right moving seat 424 to move toward each other, driving the left support rod 425 and the right support rod 426 to tilt in the direction away from the flap 21, pushing the support plate 41 out and opening it, so that the upper end surface of the support plate 41 presses against the bottom end of the tilted sleeper;

[0047] S4: During the process of the sleeper flipping 90°, the push cylinder 322 is lifted up, driving the driving bracket 321 to move in the opposite direction of the sleeper feeding. When the driving bracket 321 moves, it drives the driving plate 323 and the limiting clamping plate 324 to move to the left side of the top plate 31. The driving plate 323 drives the right-side linkage ring plate 312 to rotate through the right-side strip tooth groove 3231, and then drives the top plate 31 to rotate counterclockwise around the right-side linkage ring plate 312. The left end of the top plate 31 retracts to be flush with the end face of the square block 2. During this process, the support plate 41 continues to be pushed out and tilted to always press and fit with the bottom end of the sleeper, and the upper end face of the top plate 31 is always pressed and fit with the side end of the sleeper. When the sleeper is flipped 90°, the support plate 41 on the left side of the sleeper is pushed out and fits with the sleeper. The top end is pressed and fitted, the sleeper continues to flip, the pushing cylinder 322 is lifted, and the driving bracket 321 is driven to move in the opposite direction of the sleeper feeding. When the driving bracket 321 moves, it drives the driving plate 323 and the limiting card plate 324 to move to the left side of the top plate 31, and the limiting card plate 324 limits the outer wall of the linkage ring plate 312 on the left side of the top plate 31. When the driving plate 323 continues to move, the strip tooth groove 3231 on the left side of the linkage ring plate 312 of the top plate 31 is engaged with the half-circle linkage tooth groove 313 on the linkage ring plate 312 on the left side of the top plate 31. During the movement, the left linkage ring plate 312 is driven to rotate, and then the top plate 31 is driven to rotate counterclockwise around the left linkage ring plate 312, and the left end of the top plate 31 is driven to rotate and tilt to fit and press against the side end of the sleeper;

[0048] S5: When the sleeper flips 90° again, during this process, the support plate 41 on the right side of the sleeper retracts to be flush with the end face of the flap 21, and the left end of the top plate 31 rotates and tilts to always press against the side end of the sleeper. The top plate 31 and the support plate 41 are tilted to support the sleeper during the flipping process, so that the sleeper will not fall suddenly during the flipping process, and the sleeper flipped 180° can be transported again by the conveyor chain.

[0049] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An automatic turning and positioning device for sleeper anchoring, comprising a sleeper anchoring line, a conveyor chain for sleeper conveying provided on the sleeper anchoring line, a turning shaft (1) and cross brackets provided at both ends of the turning shaft (1) installed on the sleeper anchoring line, characterized in that: The cross bracket comprises a square block (2) sleeved on a turning shaft (1), and four flaps (21) respectively connected to four included corners of the square block (2) and used for turning the sleeper, an inner groove for accommodating a first turning auxiliary device (3) is provided on the end surface of the square block (2) between adjacent flaps (21), and an inner groove for accommodating a second turning auxiliary device (4) is provided on both sides of each flap (21); The first flip auxiliary device (3) includes a top plate (31), the contact surface of the top plate (31) and the sleeper exceeds the end surface of the square block (2), and a driving assembly (32) for driving the top plate (31) to rotate. The second flip auxiliary device (4) includes a support plate (41) with one end hinged to the flap (21), and a driving mechanism (42) for driving the support plate (41) to lift. The flip shaft (1) can rotate. In the process of driving the square block (2) and the flap (21) to flip, the top plate (31) and the support plate (41) are respectively pushed out to fit with both sides of the sleeper. In the process of flipping the sleeper, the top plate (31) and the support plate (41) are respectively adjusted in inclination. The end surfaces of one side of the top plate (31) and the support plate (41) are always in contact with the two side surfaces of the sleeper. The rotation of the flap (21) is used to drive the sleeper to flip 180° from the initial top-up state to the bottom-up state. During the process of the sleeper flipping 90° from the initial state, the support plate (41) on the bottom of the sleeper always supports the bottom of the sleeper. During the process of the sleeper flipping 90° again, the support plate (41) on the top of the sleeper always supports the top of the sleeper. During the process of the sleeper flipping 180°, the top plate (31) always supports the end face of one side of the sleeper.

2. The automatic flipping and positioning device for sleeper anchoring according to claim 1, characterized in that: One end of the tilting shaft (1) is connected to the power shaft of the conveyor chain via a belt, and a cam for positioning and loading is provided on the conveyor chain.

3. The automatic flipping and positioning device for sleeper anchoring according to claim 2, characterized in that: Four first turning auxiliary devices (3) are provided on each of the square blocks (2).

4. The automatic turning and positioning device for sleeper anchoring according to claim 3, characterized in that: The driving assembly (32) comprises a driving bracket (321), a pushing cylinder (322), a driving plate (323) and a limiting clamping plate (324). One end of the driving bracket (321) is connected to the pushing cylinder (322). The driving plates (323) are installed at the inner ends of both sides of the driving bracket (321). The limiting clamping plates (324) are extended from both ends of the driving plate (323).

5. The automatic turning and positioning device for sleeper anchoring according to claim 4, characterized in that: Both ends of the top plate (31) are connected to an arc-shaped seat (311), and both ends of the arc-shaped seat (311) are mounted with a linkage ring plate (312) via a support rod, and a half-circle linkage tooth groove (313) is provided on the linkage ring plate (312).

6. The automatic turning and positioning device for sleeper anchoring according to claim 5, characterized in that: When the top plate (31) and the inner groove on the end surface of the square block (2) are parallel, the limiting clamping plates (324) at both ends of the driving plate (323) are in contact with the outer wall of the linkage ring plate (312), and a sliding groove for limiting the movement of the driving bracket (321) is provided on the inner wall of the inner groove of the square block (2), and a sliding block is provided on the driving bracket (321) to be inserted into the sliding groove.

7. The automatic turning and positioning device for sleeper anchoring according to claim 6, characterized in that: The inner walls at both ends of the driving plate (323) are provided with strip-shaped tooth grooves (3231), and the strip-shaped tooth grooves (3231) at both ends of the driving plate (323) are movably engaged with the half-circle linkage tooth grooves (313) provided on the two linkage ring plates (312).

8. The automatic turning and positioning device for sleeper anchoring according to claim 7, characterized in that: The driving mechanism (42) comprises a driving screw rod (421) and a limiting rod (422) arranged side by side, and a left movable seat (423) and a right movable seat (424) sleeved on the driving screw rod (421) and the limiting rod (422). A left support rod (425) and a right support rod (426) are hingedly mounted on the left movable seat (423) and the right movable seat (424), respectively. One end of each of the left support rod (425) and the right support rod (426) is hingedly connected to one end of the support plate (41).

9. The automatic turning and positioning device for sleeper anchoring according to claim 8, characterized in that: One end of the driving screw (421) is connected to the motor. The driving screw (421) is provided with two sections of threads. The two sections of threads are arranged in opposite directions to drive the left movable seat (423) and the right movable seat (424) to move towards or in opposite directions, and the pitches of the two sections of threads are different.

10. The automatic turning and positioning device for sleeper anchoring according to claim 9, characterized in that: Notches for installing the second turning auxiliary device (4) are provided at both ends of the flap (21).

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