High-speed rack rail injection mechanism

Abstract

The invention relates to a high-speed rack rail injection mechanism which is applied to a rack rail vehicle walking on a rail, the rack rail vehicle comprises a rack rail wheel, a meshing rack for the rack rail wheel to walk is arranged on the rail, and the rack rail vehicle further comprises a synchronizing device and a correcting device which are arranged at the driving-in end of the meshing rack, and the correcting device is used for adjusting the tooth entering position of the rack rail wheel. The toothed rail wheel sequentially passes through the synchronizing device and the correcting device and is meshed with the meshing rack; the synchronizing device comprises a synchronizing frame arranged on the track, a passing channel for the toothed rail wheels to pass through is arranged on the synchronizing frame, and a plurality of guide wheel mounting grooves distributed in the moving direction of the toothed rail vehicle and telescopic guide wheels arranged in the guide wheel mounting grooves in a one-to-one correspondence mode are arranged on the two sides of the passing channel. The telescopic guide wheel can move in the direction perpendicular to the movement direction of the rack rail vehicle, and the telescopic guide wheel is horizontally arranged and has magnetism. Quick synchronous rotating speed of the toothed rail wheel can be achieved without adding a magnet on the toothed rail wheel, the requirement for the strength of the toothed rail wheel is effectively lowered, and the overall working stability is improved.

Description

Technical Field

[0001] The invention relates to the technical field of track engineering, and in particular to a high-speed rack-rail entry mechanism. Background Art

[0002] A rack vehicle is a rail vehicle that is driven forward by wheel-rail adhesion and gear rack meshing. The adhesion section is a section where the vehicle is effectively driven by the adhesion between the steel wheel and the rail, and the wheels of the rack section are driven wheels and are driven by the meshing of the gear and rack. From the adhesion section to the rack section, a gear entry mechanism is required to achieve a smooth transition. In the invention patent with publication number CN115748323A, a non-contact rack entry correction device is disclosed, which is mainly composed of a gear entry slide, a rack wheel, a first magnet, a second magnet, a rack fastener, a fastener elastic pad, a rack splint, a virtual rack, etc. A virtual rack is formed by the first magnet installed on the rack wheel and the second magnet installed on the gear entry slide to synchronize the speed of the rack wheel and the wheel, thereby achieving non-contact synchronous speed gear entry.

[0003] In the prior art, the first magnet is evenly installed on the pitch circle of the rack wheel and is located in the middle of the tooth shape. At the same time, since the rack wheel teeth themselves are relatively small, this requires the first magnet to be small in size but strong in magnetism, which requires very high magnet performance. In addition, it needs to be evenly installed on the pitch circle, which requires relatively high precision. The gear teeth themselves have very high strength requirements. Adding magnet installation grooves on the gear teeth has a greater impact on the strength of the gear, so the installation feasibility is relatively low. Furthermore, when the wheel-rail adhesion section is running at high speed, the inevitable vibration impact will cause the first magnet to vibrate, fall off, or even lose magnetism; the second magnet is arranged in the tooth entry slot at equal intervals along the rack pitch line. The characteristics of the magnet will only produce a large suction force when the centers of the two magnets are aligned. When the edges of the two magnets are in contact, one side produces a repulsive force. When the first magnetic pole on the gear enters the magnetic field of the second magnetic pole, the gear may be pushed by the repulsive force and cannot be aligned in the center, so that the virtual gear rack meshing relationship cannot be accurately formed, resulting in inaccurate gear synchronization speed and inaccurate correction position.

[0004] Therefore, it is necessary to provide a high-speed rack rail entry mechanism with a simple structure that can achieve rapid synchronous speed of the rack wheel without adding magnets to the rack wheel, reduce the strength requirements of the rack wheel, improve working stability. Summary of the invention

[0005] In order to overcome the deficiencies of the prior art, the present invention provides a high-speed rack-rail entry mechanism.

[0006] The technical solution of the present invention is as follows:

[0007] A high-speed rack rail entry mechanism is applied to a rack rail vehicle traveling on a track, the rack rail vehicle comprises a rack rail wheel, a meshing rack is provided on the track for the rack rail wheel to travel, and comprises a synchronizing device and a correction device arranged at the entry end of the meshing rack, the correction device is used to adjust the entry position of the rack rail wheel, the rack rail wheel passes through the synchronizing device and the correction device in sequence and meshes with the meshing rack;

[0008] The synchronization device includes a synchronization frame arranged on a track, the synchronization frame is provided with a passage for the rack wheel to pass through, a plurality of guide wheel mounting grooves arranged along the movement direction of the rack vehicle and telescopic guide wheels arranged in the guide wheel mounting grooves in a one-to-one correspondence are provided on both sides of the passage, the telescopic guide wheel can move in a direction perpendicular to the movement of the rack vehicle, the telescopic guide wheel is horizontally arranged and can rotate in the horizontal direction, the telescopic guide wheel is magnetic, when the rack wheel moves to the telescopic guide wheel, the telescopic guide wheel moves in the direction of the rack wheel and is adsorbed on the side face of the gear teeth of the rack wheel, the telescopic guide wheel limits the forward and backward translation of the gear teeth, and a limit block is provided in the guide wheel mounting groove for limiting the movement of the telescopic guide wheel toward the center of the passage.

[0009] As a further improvement of the present invention, the installation position height of the telescopic guide wheel is the same as the bottom position height of the dividing line of the rack wheel.

[0010] As a further improvement of the present invention, the center distance between two adjacent telescopic guide wheels located on a single side of the passage is the same as the tooth pitch of the rack wheel.

[0011] As a further improvement of the present invention, a permanent magnet mounting groove is provided above the guide wheel mounting groove, the guide wheel mounting groove is connected to the permanent magnet mounting groove, a permanent magnet is provided in the permanent magnet mounting groove, the permanent magnet contacts with the telescopic guide wheel and magnetizes the telescopic guide wheel.

[0012] As a further improvement of the present invention, the limit block is arranged on the two side walls of the guide wheel installation groove at one end close to the passage and extends inwardly, and a side of the limit block close to the telescopic guide wheel is an arc surface.

[0013] As a further improvement of the present invention, the gap between the side of the guide wheel installation groove close to the passage and the side of the rack wheel is 3 mm, and the maximum distance that the telescopic guide wheel extends out of the guide wheel installation groove in the direction of the passage is 5 mm.

[0014] As a further improvement of the present invention, one end of the guide wheel mounting groove away from the passage is hollowed out and provided with a detachable cover.

[0015] As a further improvement of the present invention, the correction device includes a rack seat arranged on the track, a pointed arc rack group and a standard rack group arranged on the rack seat, the pointed arc rack group is connected to the synchronization device, and the standard rack group is connected to the meshing rack.

[0016] As a further improvement of the present invention, the pointed arc rack group includes a plurality of first spring seats arranged on the rack seat, a first spring arranged on the first spring seat, and a pointed arc rack block arranged at the upper end of the first spring, and the tooth pitch of the pointed arc rack block is the same as the tooth pitch of the meshing rack.

[0017] As a further improvement of the present invention, the standard rack group includes a plurality of second spring seats arranged on the rack seat, a second spring arranged on the second spring seat, and a standard rack block arranged on the upper end of the second spring, and the standard rack block has the same structure as the meshing rack.

[0018] According to the present invention of the above scheme, the beneficial effects of the present invention are:

[0019] The present invention provides a high-speed rack-rail entry mechanism, which adopts a non-contact permanent magnet to magnetize a retractable telescopic guide wheel. The magnetized telescopic guide wheel attracts the rack wheel so that the rack wheel generates a synchronous speed, thereby replacing the conventional technology of adding magnets to the rack wheel. Therefore, the rack wheel can achieve a fast synchronous speed without adding magnets to the rack wheel, effectively reducing the strength requirement of the rack wheel, and avoiding speed synchronization failure caused by the falling of the magnet, thereby improving the overall working stability, the accuracy of the synchronous speed of the rack wheel, and the accuracy of the correction position; an independent rack block is adopted, which can be deflected and floated for easy adjustment of the tooth entry, and the rack block can be replaced independently, and the structure is simple. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0021] Figure 2 It is a structural schematic diagram of the synchronization device of the present invention;

[0022] Figure 3 is a structural cross-sectional view of the synchronization device of the present invention at a first angle;

[0023] Figure 4 is a structural cross-sectional view of the synchronization device of the present invention at a second angle;

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

[0025] Figure 6 It is a schematic structural diagram of a pointed arc-shaped rack assembly of the present invention;

[0026] Figure 7 It is a structural schematic diagram of the standard rack group of the present invention.

[0027] In the figure: 1. rack wheel; 2. meshing rack; 3. synchronization device; 31. synchronization frame; 32. passage; 33. guide wheel mounting groove; 34. telescopic guide wheel; 35. limit block; 36. permanent magnet mounting groove; 37. permanent magnet; 38. cover plate; 4. correction device; 41. rack seat; 42. first spring seat; 43. first spring; 44. pointed arc rack block; 45. second spring seat; 46. second spring; 47. standard rack block; 5. track. DETAILED DESCRIPTION

[0028] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. 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.

[0029] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0030] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0031] See also Figure 1The present invention provides a high-speed rack rail entry mechanism, which is applied to a rack rail vehicle traveling on a track. The rack rail vehicle comprises a rack rail wheel 1, and a meshing rack 2 for the rack rail wheel 1 to travel on the track. The high-speed rack rail entry mechanism comprises a synchronization device 3 and a correction device 4 arranged at the entry end of the meshing rack 2. The correction device 4 is used to adjust the entry position of the rack rail wheel 1. The rack rail wheel 1 passes through the synchronization device 3 and the correction device 4 in sequence and meshes with the meshing rack 2. After the rack rail vehicle reaches the synchronization device 3, the synchronization device 3 performs a timing operation on the rack rail wheel 1. The rack wheel 1 enters the correction device 4 at the adjusted position and speed, and the correction device 4 further adjusts and optimizes the position of the rack wheel 1 to ensure that the rack wheel 1 can be perfectly meshed with the meshing rack 2 when it reaches the meshing rack 2. The present invention positions, adjusts the speed and corrects the position of the rack wheel 1 before the rack vehicle runs to the meshing rack 2, so as to avoid collision between the rack wheel 1 and the meshing rack 2 and thus damage to the rack wheel 1 or the meshing rack 2, thereby improving the stability and safety of the rack vehicle operation.

[0032] See also Figure 2 -4, as an embodiment of the present invention, the synchronization device 3 includes a synchronization frame 31 arranged on the track 5, the synchronization frame 31 is provided with a passage 32 for the rack wheel 1 to pass through, and the two sides of the passage 32 are provided with a plurality of guide wheel mounting grooves 33 arranged along the movement direction of the rack vehicle and telescopic guide wheels 34 arranged in the guide wheel mounting grooves 33 in a one-to-one correspondence, the telescopic guide wheel 34 can move in a direction perpendicular to the movement direction of the rack vehicle, the telescopic guide wheel 34 is horizontally arranged and can rotate in the horizontal direction, the telescopic guide wheel 34 is magnetic, when the rack wheel 1 moves to the telescopic guide wheel 34, the telescopic guide wheel 34 moves toward the rack wheel 1 and is adsorbed on the side of the gear teeth of the rack wheel 1, the telescopic guide wheel 34 limits the forward and backward translation of the gear teeth, compared with the existing According to some technical solutions, there is no need to install magnets on the rack wheel 1. After the rack wheel 1 enters the passage 32, the telescopic guide wheels 34 on both sides will be adsorbed to the side faces of the gear teeth of the rack wheel 1, and a large suction force will be generated through direct contact to position and synchronously adjust the gear teeth of the rack wheel 1, so that high-speed gear entry can be achieved, and the speed can reach 30 km / h. Preferably, a limit block 35 is provided in the guide wheel installation groove 33 to limit the movement of the telescopic guide wheel 34 toward the center of the passage 32, which can not only protect the telescopic guide wheel 34, but also prevent the telescopic guide wheel 34 from extending too much into the passage 32, resulting in unnecessary interference or collision between the telescopic guide wheel 34 and the rack wheel 1, causing unnecessary damage to the rack wheel 1 and the telescopic guide wheel 34.

[0033] As an embodiment of the present invention, the installation position height of the telescopic guide wheel 34 is the same as the bottom position height of the dividing line of the rack wheel 1, thereby improving the stability and reliability of the synchronous speed regulation of the rack wheel 1 and avoiding the installation position of the telescopic guide wheel 34 being too low or too high, resulting in unnecessary influence on the synchronous speed regulation of the rack wheel 1.

[0034] As an embodiment of the present invention, the center distance between two adjacent telescopic guide wheels 34 located on a single side of the passage 32 is the same as the tooth pitch of the rack wheel 1, ensuring that each telescopic guide wheel 34 can accurately and effectively contact the side of the tooth of the rack wheel 1, and also ensuring that each tooth of the rack wheel 1 can effectively contact a telescopic guide wheel 34 when rotating downward, which can avoid the phenomenon that the center distance between two adjacent telescopic guide wheels 34 is too large, resulting in individual teeth of the rack wheel 1 falling out, causing unnecessary influence on the synchronous speed regulation of the rack wheel 1, and can also avoid the center distance between two adjacent telescopic guide wheels 34 is too small, resulting in redundancy of the telescopic guide wheels 34, resulting in waste of use costs.

[0035] As an embodiment of the present invention, a permanent magnet mounting groove 36 is provided above the guide wheel mounting groove 33, the guide wheel mounting groove 33 is connected to the permanent magnet mounting groove 36, a permanent magnet 37 is provided in the permanent magnet mounting groove 36, the permanent magnet 37 contacts the telescopic guide wheel 34 and magnetizes the telescopic guide wheel 34, the permanent magnet 37 is installed in the permanent magnet mounting groove 36, and is not prone to vibration shedding or vibration demagnetization when subjected to vibration impact, thereby improving the stability and reliability of the synchronization device 3; there is no requirement for the magnetism of the permanent magnet 37, and the telescopic guide wheel 34 only needs to be magnetized so that the telescopic guide wheel 34 can be adsorbed on the side of the gear tooth of the rack wheel 1. As an alternative solution, according to specific usage requirements, an electromagnet can be used to replace the permanent magnet 37.

[0036] As an embodiment of the present invention, the limit block 35 is arranged on the two side walls of the guide wheel mounting groove 33 near one end of the passage 32 and extends inwardly. The width of the guide wheel mounting groove 33 near one end of the passage 32 is smaller than the diameter of the telescopic guide wheel 34, thereby limiting the distance that the telescopic guide wheel 34 moves in the direction of the passage 32. Preferably, the side of the limit block 35 near the telescopic guide wheel 34 is an arc surface, that is, under the action of the limit block 35, the opening of the guide wheel mounting groove 33 near one end of the passage 32 is semicircular, which can not only play a certain guiding role for the telescopic guide wheel 34, but also avoid damage to the telescopic guide wheel 34 caused by sharp corners, thereby reducing the damage rate of the telescopic guide wheel 34 and increasing the service life of the telescopic guide wheel 34.

[0037] As an embodiment of the present invention, the gap between the side of the guide wheel mounting groove 33 close to the passage 32 and the side of the rack wheel 1 is 3 mm, and the maximum distance that the telescopic guide wheel 34 extends out of the guide wheel mounting groove 33 in the direction of the passage 32 is 5 mm. The telescopic guide wheel 34 can extend a distance greater than the gap between the guide wheel mounting groove 33 and the side of the rack wheel 1. This can enable the telescopic guide wheel 34 to slide in the guide wheel mounting groove 33 to adapt to the gap error between the rack wheel 1 and the guide wheel mounting groove 33, and can also ensure that the telescopic guide wheel 34 is in full contact with the side of the teeth of the rack wheel 1, thereby generating a larger suction force to position and synchronously adjust the teeth of the rack wheel 1.

[0038] As an embodiment of the present invention, one end of the guide wheel mounting groove 33 away from the passage 32 is hollowed out and provided with a removable cover plate 38. During normal operation, the guide wheel mounting groove 33 and the cover plate 38 cooperate to effectively limit the telescopic guide wheel 34. When the telescopic guide wheel 34 needs to be inspected or replaced, the staff can open the cover plate 38 and take out the telescopic guide wheel 34 from the guide wheel mounting groove 33. The operation is simple and convenient, which improves the practicality and convenience of inspecting and repairing the telescopic guide wheel 34.

[0039] See also Figure 5 -7, as an embodiment of the present invention, the correction device 4 includes a rack seat 41 arranged on the track 5, a pointed arc rack group and a standard rack group arranged on the rack seat 41, the pointed arc rack group is connected to the synchronization device 3, and the standard rack group is connected to the meshing rack 2. Although the rack wheel 1 can position the gear teeth of the rack wheel 1 to a certain extent under the synchronous speed regulation of the synchronization device 3, when the rack wheel 1 leaves the synchronization device 3 and enters the correction device 4, the rack wheel 1 and the rack on the correction device 4 will still collide to a certain extent, because The front half of this correction device 4 adopts a pointed arc rack group. Compared with the standard rack group, due to the characteristics of the pointed arc shape, the strength of the collision between the pointed arc rack group and the rack wheel 1 is reduced, which has a certain mitigating effect. When the rack wheel 1 passes through the pointed arc rack group, the tooth position of the rack wheel 1 is also accurately corrected. When it passes through the standard rack group to reach the meshing rack 2, the rack wheel 1 and the meshing rack 2 can be perfectly meshed, avoiding collision between the rack wheel 1 and the meshing rack 2, and effectively improving the service life of the meshing rack 2.

[0040] As an embodiment of the present invention, the pointed arc rack group includes a plurality of first spring seats 42 arranged on the rack seat 41, a first spring 43 arranged on the first spring seat 42, and a pointed arc rack block 44 arranged at the upper end of the first spring 43. The pitch of the pointed arc rack block 44 is the same as the pitch of the meshing rack 2. When the rack wheel 1 and the pointed arc rack block 44 have a top tooth, the first spring 43 can be used to realize the up and down floating and deflection of the pointed arc rack block 44 so that the gear teeth of the rack wheel 1 automatically slide into the correct tooth groove, and the meshing relationship between the rack wheel 1 and the pointed arc rack block 44 is adjusted quickly to avoid the top tooth phenomenon when the teeth are just entered. Correspondingly, the standard rack group includes a plurality of second spring seats 45 arranged on the rack seat 41, a plurality of first spring seats 45 arranged on the second spring seats 45, and a plurality of second spring seats 45 arranged on the second spring seats 45. A second spring 46 and a standard rack block 47 arranged at the upper end of the second spring 46. The standard rack block 47 has the same structure as the meshing rack 2. The function of the second spring 46 is the same as that of the first spring 43, and both are used to adjust and optimize the meshing relationship between the rack wheel 1 and the rack block 44. The first spring seat 42 has the same structure as the second spring seat 45 and can be used interchangeably. The first spring 43 has the same structure as the second spring 46 and can be used interchangeably. In addition, when the pointed arc rack block 44 or the standard rack block 47 is worn, they can be replaced separately. The first few pointed arc rack blocks 44 of the pointed arc rack group wear faster and can be replaced regularly in actual use to meet functional requirements. The split pointed arc rack block 44 is used instead of the integral rack, which can effectively reduce the inspection and maintenance costs of the correction device 4.

[0041] Specific functions of the correction device 4: When the rack wheel 1 and the pointed arc rack block 44 are not correctly meshed, a slight "top tooth" phenomenon will occur between the rack wheel 1 and the pointed arc rack block 44. Due to the gravity of the rack wheel 1, the pointed arc rack block 44 will be lowered downward through the first spring 43. The chamfers on both sides of the pointed arc rack block 44 allow the pointed arc rack block 44 to produce a certain deflection in the tooth groove, which is conducive to the rack wheel 1 sliding into the tooth groove under the action of inertia, so that it can be correctly meshed with the pointed arc rack block 44; when the rack wheel 1 enters the standard rack group, the rack wheel 1 can be fine-tuned under the cooperation of the second spring 46 and the standard rack block 47 to ensure a smooth transition to the meshing rack 2.

[0042] In summary, the present invention provides a high-speed rack rail entry mechanism, which positions, adjusts the speed and corrects the position of the rack wheel 1 before the rack rail vehicle runs to the meshing rack 2, thereby avoiding the rack wheel 1 from colliding with the meshing rack 2 and causing damage to the rack wheel 1 or the meshing rack 2, thereby improving the stability and safety of the rack rail vehicle operation; the telescopic guide wheel 34 generates a large suction force through direct contact to position and synchronously adjust the gear teeth of the rack wheel 1, and can achieve high-speed gear entry, with a speed of up to 30 km / h; the limit block 35 can not only protect the telescopic guide wheel 34, but also avoid the telescopic guide wheel 34 The telescopic guide wheel 34 is not extended too far into the passage 32, resulting in unnecessary interference or collision between the telescopic guide wheel 34 and the rack wheel 1, causing unnecessary damage to the rack wheel 1 and the telescopic guide wheel 34; the center distance between the two adjacent telescopic guide wheels 34 on one side of the passage 32 is the same as the tooth pitch of the rack wheel 1, which can avoid the phenomenon that the center distance between the two adjacent telescopic guide wheels 34 is too large, resulting in the individual teeth of the rack wheel 1 falling out, causing unnecessary influence on the synchronous speed regulation of the rack wheel 1, and can also avoid the redundancy of the telescopic guide wheels 34 due to the small center distance between the two adjacent telescopic guide wheels 34, resulting in high use costs. Waste; the permanent magnet 37 is installed in the permanent magnet installation groove 36, and it is not easy to produce vibration shedding or vibration demagnetization when subjected to vibration impact, thereby improving the stability and reliability of the operation of the synchronization device 3; the telescopic guide wheel 34 can be extended to a distance greater than the gap between the guide wheel installation groove 33 and the side of the rack wheel 1, which can not only realize that the telescopic guide wheel 34 can slide in the guide wheel installation groove 33 to adapt to the gap error between the rack wheel 1 and the guide wheel installation groove 33, but also ensure that the telescopic guide wheel 34 is in full contact with the side of the gear teeth of the rack wheel 1, thereby generating a large suction force to position and synchronize the gear teeth of the rack wheel 1 Adjustment; Due to the characteristics of the pointed arc shape, the strength of the collision between the pointed arc rack group and the rack wheel 1 is reduced, which has a certain mitigating effect. When the rack wheel 1 passes through the pointed arc rack group, the tooth position of the rack wheel 1 is also accurately corrected. When it passes through the standard rack group to reach the meshing rack 2, the rack wheel 1 and the meshing rack 2 can be perfectly meshed, avoiding collision between the rack wheel 1 and the meshing rack 2, and effectively improving the service life of the meshing rack 2. Using a split pointed arc rack block 44 instead of an integral rack can effectively reduce the inspection and maintenance costs of the correction device 4.

[0043] It should be emphasized that the above are only preferred embodiments of the present invention and do not limit the present invention in any form. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A high-speed rack rail entry mechanism, applied to a rack rail vehicle traveling on a track, the rack rail vehicle comprising a rack rail wheel (1), the track being provided with a meshing rack (2) for the rack rail wheel (1) to travel, characterized in that: It comprises a synchronizing device (3) and a correction device (4) arranged at the entry end of the meshing rack (2), wherein the correction device (4) is used to adjust the tooth entry position of the rack wheel (1), and the rack wheel (1) passes through the synchronizing device (3), the correction device (4) in sequence, and meshes with the meshing rack (2); The synchronization device (3) comprises a synchronization frame (31) arranged on a track (5), the synchronization frame (31) being provided with a passageway (32) for the rack wheel (1) to pass through, a plurality of guide wheel mounting grooves (33) arranged along the moving direction of the rack wheel and telescopic guide wheels (34) arranged in a one-to-one correspondence in the guide wheel mounting grooves (33) on both sides of the passageway (32), the telescopic guide wheels (34) being able to move in a direction perpendicular to the moving direction of the rack wheel. 4) is arranged horizontally and can rotate in the horizontal direction, the telescopic guide wheel (34) is magnetic, when the rack wheel (1) moves to the telescopic guide wheel (34), the telescopic guide wheel (34) moves in the direction of the rack wheel (1) and is adsorbed on the side surface of the gear teeth of the rack wheel (1), the telescopic guide wheel (34) limits the forward and backward translation of the gear teeth, and a limit block (35) is provided in the guide wheel installation groove (33) to limit the movement of the telescopic guide wheel (34) toward the center of the passage (32).

2. The high-speed rack rail entry mechanism according to claim 1, characterized in that: The installation position height of the telescopic guide wheel (34) is the same as the bottom position height of the dividing line of the rack wheel (1).

3. The high-speed rack rail entry mechanism according to claim 1, characterized in that: The center distance between two adjacent telescopic guide wheels (34) located on one side of the passage (32) is the same as the tooth pitch of the rack wheel (1).

4. The high-speed rack rail entry mechanism according to claim 1, characterized in that: A permanent magnet mounting groove (36) is provided above the guide wheel mounting groove (33), the guide wheel mounting groove (33) is connected to the permanent magnet mounting groove (36), a permanent magnet (37) is provided in the permanent magnet mounting groove (36), and the permanent magnet (37) contacts the telescopic guide wheel (34) and magnetizes the telescopic guide wheel (34).

5. The high-speed rack rail entry mechanism according to claim 1, characterized in that: The limit block (35) is arranged on the two side walls of the guide wheel installation groove (33) at one end close to the passage (32) and extends inwardly, and a surface of the limit block (35) close to the telescopic guide wheel (34) is an arc surface.

6. The high-speed rack rail entry mechanism according to claim 5, characterized in that: The gap between the side of the guide wheel installation groove (33) close to the passage (32) and the side of the rack wheel (1) is 3 mm, and the maximum distance that the telescopic guide wheel (34) extends out of the guide wheel installation groove (33) in the direction of the passage (32) is 5 mm.

7. The high-speed rack rail entry mechanism according to claim 1, characterized in that: One end of the guide wheel installation groove (33) away from the passage (32) is hollowed out and provided with a detachable cover plate (38).

8. The high-speed rack rail entry mechanism according to claim 1, characterized in that: The correction device (4) comprises a rack seat (41) arranged on the track (5), a pointed arc-shaped rack group and a standard rack group arranged on the rack seat (41), the pointed arc-shaped rack group being connected to the synchronization device (3), and the standard rack group being connected to the meshing rack (2).

9. The high-speed rack rail entry mechanism according to claim 8, characterized in that: The pointed circular arc rack assembly comprises a plurality of first spring seats (42) arranged on the rack seat (41), a first spring (43) arranged on the first spring seat (42), and a pointed circular arc rack block (44) arranged on the upper end of the first spring (43); the tooth pitch of the pointed circular arc rack block (44) is the same as the tooth pitch of the meshing rack (2).

10. The high-speed rack rail entry mechanism according to claim 8, characterized in that: The standard rack assembly comprises a plurality of second spring seats (45) arranged on the rack seat (41), a second spring (46) arranged on the second spring seat (45), and a standard rack block (47) arranged on the upper end of the second spring (46); the standard rack block (47) has the same structure as the meshing rack (2).

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