Lifting mechanism for intelligent steel rail finishing and grinding equipment

Abstract

The invention relates to a lifting mechanism for intelligent steel rail finishing and grinding equipment, and relates to the field of steel rail finishing, the lifting mechanism is connected to a support and comprises a driving motor, a tension hollow shaft is coaxially fixed to an output shaft of the driving motor, the outer side of the tension hollow shaft is sleeved with an adjustable support, and the tension hollow shaft is rotationally connected with the adjustable support; the driving motor is fixedly connected with the movable support, the movable support is installed on the support, the tension hollow shaft is coaxially and fixedly provided with a ball screw, the outer side of the ball screw is in threaded connection with a slipknot rod, and the polishing mechanism is installed on the slipknot rod. The lifting mechanism has the effect that the lifting mechanism can be conveniently and simply maintained.

Description

Technical Field

[0001] The present application relates to the field of rail dressing, and in particular to a lifting mechanism for intelligent rail dressing and grinding equipment. Background Art

[0002] Railway is an important part of my country's transportation, and railway track is one of the basic infrastructures of railway transportation. In particular, turnout sections and small radius curves are called the three weak links of railways together with curves and joints due to their large number, complex structure, short service life, speed limit, low driving safety, and high maintenance investment.

[0003] When the rails on the railway track are rolled to a certain extent, the profile of the rails changes, the contact geometry between the wheelset and the rails deteriorates, and the stability of operation and the service life of the rails are damaged. Therefore, since the speed increase of my country's railways, the railway department has attached great importance to the profile grinding of rails.

[0004] The grinding device in the related art usually includes a grinding mechanism for grinding the rails, and a lifting mechanism for driving the grinding mechanism to rise and fall, and the lifting mechanism is usually driven by hydraulic pressure. During the working process, the lifting mechanism drives the grinding mechanism to rise and fall to complete the grinding of the rails.

[0005] However, the hydraulic drive method has the problem of complex maintenance and easy leakage of the hydraulic system, which makes the maintenance of the lifting mechanism more complicated. Summary of the invention

[0006] In order to facilitate simple maintenance of the lifting mechanism, the present application provides a lifting mechanism for intelligent rail dressing and grinding equipment.

[0007] The present application provides an intelligent rail dressing and grinding equipment lifting mechanism using the following technical solutions: A lifting mechanism for intelligent rail dressing and grinding equipment is connected to a bracket, comprising a driving motor, a tension hollow shaft is coaxially fixed to the output shaft of the driving motor, an active support is sleeved on the outer side of the tension hollow shaft and the tension hollow shaft is rotatably connected to the active support, the driving motor is fixedly connected to the active support, the active support is installed on the bracket, a ball screw is coaxially fixed to the tension hollow shaft, a hitch rod is threadedly connected to the outer side of the ball screw, and a grinding mechanism is installed on the hitch rod.

[0008] By adopting the above technical solution, the driving motor is started, the driving motor drives the tension hollow shaft to rotate, and then drives the ball screw to rotate, and the slipknot rod on the ball screw moves along the axial direction of the ball screw to realize the lifting and lowering of the grinding mechanism, thereby completing the repair and grinding work of the rail. The lifting mechanism is easy to maintain.

[0009] Preferably, a long groove is formed at one end of the live-knot rod close to the ball screw, one end of the ball screw is inserted into the long groove, an adjusting tube is threadedly connected to the outer wall of the ball screw, and the adjusting tube is detachably connected to the live-knot rod.

[0010] By adopting the above technical solution, when the driving motor drives the ball screw to rotate, the rotation of the ball screw drives the adjustment tube to move along the ball screw, and the movement of the adjustment tube drives the slipknot rod and the grinding mechanism to rise and fall. The adjustment tube and the slipknot rod are detachably connected, which is convenient for disassembly and maintenance of the slipknot rod and the adjustment tube.

[0011] Preferably, the side of the slipknot rod is connected with an auxiliary tube of transparent material, the auxiliary tube is communicated with the long groove, an indicator block is tightly slidably connected inside the auxiliary tube, and one end of the ball screw extending into the long groove is fixedly connected with a piston block tightly slidably connected to the long groove.

[0012] By adopting the above technical solution, when the ball screw moves relative to the slipknot rod, the piston block moves in the slipknot rod, and the pressure in the slipknot rod changes, which makes it easy to drive the indicator block to move in the auxiliary tube. The transparent auxiliary tube connected to the side of the slipknot rod can intuitively display the position change of the indicator block, which is convenient for the operator to monitor the movement state of the ball screw in real time. And when multiple lifting mechanisms drive multiple grinding mechanisms to rise and fall together, observing the position of the indicator block makes it easy to adjust the lifting of multiple grinding mechanisms to the same height.

[0013] Preferably, one end of the auxiliary tube away from the slipknot rod is bent toward the direction close to the driving motor, and a correction component for correcting the position of the indicator block is connected to the auxiliary tube.

[0014] By adopting the above technical solution, the end of the auxiliary tube away from the slipknot rod is bent toward the driving motor, which reduces the situation where the auxiliary rod affects the lifting of the grinding mechanism. In addition, a correction component for correcting the position of the indicator block is connected to the auxiliary tube. When multiple lifting mechanisms drive multiple grinding mechanisms to the same height, the position of the indicator block in each lifting mechanism may be different. In order to facilitate the lifting of multiple grinding mechanisms through the indicator block, the position of the indicator block can be calibrated by the correction component, so that when the grinding mechanisms are at the same height, the position of the indicator block is also at the same height.

[0015] Preferably, the inner side wall of the auxiliary tube close to or away from the driving mechanism is provided with an installation groove, the bottom wall of the installation groove is provided with a connecting hole, a correction block is clamped in the installation groove, and two sides of the two correction blocks facing away from each other are provided with a threaded groove, a correction rod is threadedly connected in one of the threaded grooves, and the correction rod is plugged into the corresponding connecting hole and extends to the outside of the auxiliary tube.

[0016] By adopting the above technical solution, the correction rod is threadedly connected to the thread groove on one of the correction blocks, and then the correction block is pushed into the auxiliary tube until the correction block is out of the installation groove. Then the movement of the correction rod can drive the correction block to push the indicator block to move the position, so as to facilitate the adjustment of the position of the indicator block.

[0017] Preferably, the correction rod includes a first threaded section threadedly connected to the thread groove, a smooth section plugged into the connecting hole, and a second threaded section located on the side of the smooth section away from the first threaded section, the second threaded section is used to be threadedly connected to the connecting hole, and the length of the smooth section is greater than the depth of the mounting groove.

[0018] By adopting the above technical solution, after the first thread section is threadedly connected with the corresponding correction block, the correction rod is pushed toward the inside of the auxiliary tube, and the correction rod causes the correction block to be separated from the installation slot. In this process, the smooth section moves relative to the connecting hole, which facilitates the correction block to be smoothly separated from the installation slot. Then, the correction rod continues to move toward the inside of the auxiliary tube and rotates, and the second thread section gradually becomes threadedly connected with the connecting hole. At this time, it is convenient for the correction rod to rotate slowly to drive the correction block to slowly push the indicator block to move, which facilitates the more precise movement of the position of the indicator block.

[0019] Preferably, a vent hole is formed on the bottom wall of each mounting groove.

[0020] By adopting the above technical solution, the vent holes provided on the bottom wall of the mounting groove can ensure the gas flow in the auxiliary pipe, which helps to improve the accuracy of the position correction of the indicator block.

[0021] Preferably, the auxiliary pipe includes an elbow pipe and a straight pipe, a connecting hole is opened on the side wall of the hitch rod, one end of the elbow pipe is inserted into the connecting hole and threadedly connected to the hitch rod, and the other end of the elbow pipe is threadedly connected to the straight pipe and communicated with each other.

[0022] By adopting the above technical solution, it is relatively easy to disassemble and assemble the elbow pipe and the straight pipe, which is convenient for installing and repairing the auxiliary pipe.

[0023] Preferably, two supporting grooves are provided on a side surface of the piston block close to the adjusting tube, and two supporting blocks are fixedly connected to the end surface of the adjusting tube close to the piston block, one supporting block corresponds to one supporting groove, and each supporting block is used to be plugged into the corresponding supporting groove.

[0024] By adopting the above technical solution, when the piston block moves relative to the adjusting tube until the piston block contacts the adjusting tube, each support block is plugged into the corresponding support groove, thereby reducing the situation where the piston block is squeezed and deformed and enters the adjusting tube.

[0025] Preferably, the ends of the adjusting tube and the hitch rod that are close to each other are fixedly connected with flanges, and the two flanges are connected with locking assemblies, and the locking assembly includes two arc rods, and each arc rod is provided with receiving sections at both ends, and each receiving section is tightly attached to one of the receiving sections on the adjacent arc rod, and the two receiving sections tightly attached to each other are fixedly connected by fasteners, and the inner side wall of each arc rod is provided with a placement groove, and the two flanges are tightly attached to each other and inserted into each placement groove.

[0026] By adopting the above technical solution, the two flanges are closely attached to each other and inserted into each placement groove, thereby realizing the quick connection and locking between the adjustment tube and the piston rod, and improving the stability and reliability of the device. The two flanges are clamped in the placement grooves, so that the connection between the adjustment tube and the slipknot rod is relatively stable, and the two are not easy to separate from each other.

[0027] In summary, the present application includes at least one of the following beneficial technical effects: 1. Easy to maintain the lifting mechanism; 2. Observing the position of the indicator block makes it easier to adjust multiple grinding mechanisms to the same height; 3. It is convenient to correct the position of the indicator block. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a cross-sectional view of the lifting mechanism according to the first embodiment of the present application.

[0029] Figure 2 It is a schematic diagram of the structure of the auxiliary tube according to the second embodiment of the present application.

[0030] Figure 3 It is a manifestation Figure 2 Enlarged view of point A in the middle.

[0031] Figure 4 It is a structural schematic diagram of a correction component according to Embodiment 1 of the present application.

[0032] Figure 5 This is a schematic diagram of the structure of the locking assembly in the first embodiment of the present application. Explanation of the reference numerals in the accompanying drawings: 1. driving motor; 2. speed reducer; 3. tension hollow shaft; 4. flexible support; 41. protective sleeve; 5. ball screw; 51. adjusting tube; 511. support block; 512. flange; 52. piston block; 521. support groove; 6. slipknot rod; 61. long groove; 62. connecting hole; 7. auxiliary tube; 71. indicator block; 72. elbow tube; 73. straight tube; 731. mounting groove; 732. connecting hole; 733. vent; 74. elastic ring; 8. correction assembly; 81. correction block; 811. thread groove; 82. correction rod; 821. first thread section; 822. smooth section; 823. second thread section; 9. locking assembly; 91. arc rod; 911. placement groove; 92. receiving section. DETAILED DESCRIPTION

[0033] The following is combined with Figure 1-Figure 5 This application is described in further detail.

[0034] Embodiment 1 The embodiment of the present application discloses a lifting mechanism for intelligent rail repair and grinding equipment. Figure 1 The lifting mechanism includes a driving motor 1, on which a reducer 2 is fixedly mounted, wherein a tension hollow shaft 3 is coaxially fixed to the output shaft of the reducer 2, an active support 4 is sleeved on the outer side of the tension hollow shaft 3, and the tension hollow shaft 3 and the active support 4 are rotatably connected through a bearing. The reducer 2 is fixedly connected to the active support 4, the active support 4 is mounted on the bracket, and a ball screw 5 is coaxially fixed to the tension hollow shaft 3.

[0035] The end of the flexible support 4 away from the driving motor 1 is fixedly connected with a protective sleeve 41, and the tension hollow shaft 3 and the ball screw 5 are plugged into the protective sleeve 41. The outer side of the ball screw 5 is threadedly connected with a slipknot rod 6, and a grinding mechanism is installed on the slipknot rod 6. When the driving motor 1 is started, the output shaft of the reducer 2 drives the tension hollow shaft 3 and the ball screw 5 to rotate, and the rotation of the ball screw 5 drives the slipknot rod 6 and the grinding mechanism to rise and fall, achieving the effect of accurately controlling the grinding position and improving the grinding accuracy.

[0036] The driving motor 1 is a stepping motor, which adjusts the movement of the lifting mechanism through the current feedback signal.

[0037] An elongated groove 61 is formed at one end of the slipknot rod 6 close to the ball screw 5, and one end of the ball screw 5 away from the tension hollow shaft 3 is inserted into the elongated groove 61. The diameter of the ball screw 5 is smaller than the diameter of the elongated groove 61. An adjusting tube 51 is coaxially threadedly connected to the ball screw 5. The adjusting tube 51 is fastened to the slipknot rod 6 by bolts and nuts.

[0038] The implementation principle of the lifting mechanism for an intelligent rail dressing and grinding equipment in the embodiment of the present application is as follows: by optimizing the design of the linkage mechanism between the drive motor 1 and the tension hollow shaft 3, the active support 4 and the ball screw 5, while ensuring the accuracy and efficiency of rail grinding, the original complex piping system is greatly simplified, and the stepper motor drive is used to replace the hydraulic system, which not only reduces the maintenance cost, but also improves the performance of the overall system operation stability, and enhances operability and practicality.

[0039] Embodiment 2 The embodiment of the present application discloses a lifting mechanism for an intelligent rail repair and grinding device. Figure 2 and Figure 3 A transparent auxiliary tube 7 is installed on the side of the slipknot rod 6, and the auxiliary tube 7 is connected to the long groove 61. An indicator block 71 is tightly slidably connected in the auxiliary tube 7, and the indicator block 71 can slide freely in the auxiliary tube 7. One end of the ball screw 5 extending into the long groove 61 is fixedly connected to a piston block 52 tightly slidably connected to the long groove 61. When the ball screw 5 moves relative to the slipknot rod 6, the ball screw 5 drives the piston block 52 to slide in the long groove 61. At this time, under the influence of air pressure, the indicator block 71 moves in the auxiliary tube 7.

[0040] The auxiliary tube 7 is marked with scales, so that it is easy to judge the displacement of the indicator block 71 in the auxiliary tube 7. When multiple lifting mechanisms drive the corresponding grinding mechanisms to rise and fall, it is easy to judge whether the multiple grinding mechanisms are lifted to the same height according to the position of the indicator block 71 in the auxiliary tube 7, and it is easy to judge the moving distance of each indicator block 71.

[0041] Reference Figure 2 and Figure 3 One end face of the piston block 52 close to the regulating tube 51 is provided with two supporting grooves 521 , and the end face of the regulating tube 51 close to the piston block 52 is fixedly connected with two supporting blocks 511 , one supporting block 511 corresponds to one supporting groove 521 , and each supporting block 511 is used to be plugged into the corresponding supporting groove 521 .

[0042] When the piston block 52 moves toward the regulating tube 51 until the piston block 52 contacts the regulating tube 51 , each support block 511 is plugged into the corresponding support groove 521 , thereby reducing the possibility that the piston block 52 is squeezed and deformed, thereby entering the regulating tube 51 .

[0043] Each support block 511 gradually shrinks toward the direction close to the piston block 52 and becomes a pointed end, so that the support block 511 can be inserted into the support groove 521 more smoothly.

[0044] Reference Figure 2 and Figure 4The auxiliary tube 7 is bent at one end away from the slipknot rod 6 toward the driving motor 1, and the auxiliary tube 7 includes an elbow tube 72 and a straight tube 73 that are threadedly connected to each other. A connecting hole 62 is provided on the side wall of the slipknot rod 6, and one end of the elbow tube 72 away from the straight tube 73 is inserted into the connecting hole 62 and threadedly connected to the slipknot rod 6. A correction component 8 is connected to the auxiliary tube 7 to correct the position of the indicator block 71.

[0045] The correction assembly 8 includes two correction blocks 81 and a correction rod 82. The two inner walls of the auxiliary tube 7 close to or away from the drive motor 1 are provided with mounting grooves 731, each correction block 81 is clamped in the corresponding mounting groove 731, and the bottom wall of the mounting groove 731 is provided with a connecting hole 732. The bottom wall of each mounting groove 731 is provided with a vent hole 733. The two correction blocks 81 are provided with a threaded groove 811 on the side away from each other, and each threaded groove 811 is coaxially arranged with the corresponding connecting hole 732.

[0046] The correction rod 82 is designed as a three-section structure: a first threaded section 821 connected to the threaded groove 811 at one end, a smooth section 822 plugged into the connecting hole 732 in the middle, and a second threaded section 823 at the end for threaded connection with the connecting hole 732. The length of the smooth section 822 is greater than the depth of the installation groove 731, and one end of the thread passes through the connecting hole 732 and is threadedly connected to the threaded groove 811 on one of the correction blocks 81.

[0047] Reference Figure 2 and Figure 4 , push the correction rod 82 into the auxiliary rod, the correction rod 82 pushes the correction block 81 to gradually disengage from the mounting groove 731, and at this time the smooth section 822 moves relative to the connecting hole 732. When the correction block 81 disengages from the mounting groove 731, the second thread section 823 contacts the auxiliary tube 7, and the correction rod 82 is rotated so that the correction rod 82 is threadedly connected with the connecting hole 732. At this time, the correction rod 82 rotates and drives the correction block 81 to gradually push the indicating block 71 into the auxiliary tube 7. The position of the correction rod 82 is adjusted by twisting the correction rod 82, thereby achieving fine adjustment of the position of the indicating block 71.

[0048] A circle of elastic ring 74 is fixedly connected to the opening of each mounting groove 731, and the side of the elastic ring 74 facing away from the bottom of the mounting groove 731 is an inclined surface, so that the mounting block can squeeze the elastic ring 74 and snap into the mounting groove 731. When the mounting block is snapped into the mounting groove 731, the elastic ring 74 prevents the mounting block from accidentally detaching from the mounting groove 731.

[0049] Reference Figure 2 and Figure 5 The outer wall of the adjusting tube 51 is fixedly connected with a flange 512, and the outer wall of the slipknot rod 6 is also fixedly connected with a flange 512, and the two flanges 512 are closely attached to each other. The flanges 512 are connected with a locking assembly 9 for locking the two flanges 512.

[0050] The locking assembly 9 includes two arc-shaped rods 91, and the inner side walls of the two arc-shaped rods 91 are provided with placement grooves 911, and two flanges 512 are simultaneously plugged into each placement groove 911. A receiving section 92 is fixedly provided at both ends of each arc-shaped rod 91, and each receiving section 92 is closely attached to one of the receiving sections 92 on the adjacent arc-shaped rod 91. Each two closely attached receiving sections 92 are fastened and connected by bolts and nuts.

[0051] The implementation principle of the lifting mechanism for intelligent rail dressing and grinding equipment in the embodiment of the present application is as follows: when the ball screw 5 rotates to drive the adjustment tube 51 and the slipknot rod 6 to rise and fall, the slipknot rod 6 rises and falls to drive the piston block 52 to rise and fall. In this process, the indicator block 71 moves relative to the auxiliary tube 7 under the influence of air pressure, so that it is convenient to judge the degree of lifting and falling of the grinding mechanism according to the position of the indicator block 71.

[0052] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A lifting mechanism for intelligent rail dressing and grinding equipment, which is connected to a bracket and is characterized by: The invention comprises a driving motor (1), a tension hollow shaft (3) being coaxially fixed on the output shaft of the driving motor (1), a flexible support (4) being sleeved on the outer side of the tension hollow shaft (3), and the tension hollow shaft (3) and the flexible support (4) being rotationally connected, the driving motor (1) being fixedly connected to the flexible support (4), the flexible support (4) being mounted on a bracket, a ball screw (5) being coaxially fixed on the tension hollow shaft (3), a slipknot rod (6) being threadedly connected to the outer side of the ball screw (5), and a grinding mechanism being mounted on the slipknot rod (6).

2. The lifting mechanism for intelligent rail dressing and grinding equipment according to claim 1 is characterized in that: An end of the slipknot rod (6) close to the ball screw (5) is provided with a long groove (61), one end of the ball screw (5) is inserted into the long groove (61), an outer wall of the ball screw (5) is threadedly connected with an adjustment tube (51), and the adjustment tube (51) is detachably connected to the slipknot rod (6).

3. The lifting mechanism for intelligent rail dressing and grinding equipment according to claim 2 is characterized in that: An auxiliary tube (7) made of a transparent material is connected to the side of the slipknot rod (6), the auxiliary tube (7) is in communication with the long groove (61), an indicating block (71) is tightly slidably connected inside the auxiliary tube (7), and one end of the ball screw (5) extending into the long groove (61) is fixedly connected to a piston block (52) tightly slidably connected to the long groove (61).

4. The lifting mechanism for intelligent rail dressing and grinding equipment according to claim 3 is characterized in that: One end of the auxiliary tube (7) away from the slipknot rod (6) is bent in a direction close to the drive motor (1), and a correction component (8) for correcting the position of the indicator block (71) is connected to the auxiliary tube (7).

5. The lifting mechanism for intelligent rail dressing and grinding equipment according to claim 4 is characterized in that: The inner side wall of the auxiliary tube (7) close to or far from the driving mechanism is provided with a mounting groove (731), the bottom wall of the mounting groove (731) is provided with a communicating hole (732), a correction block (81) is clamped in the mounting groove (731), and two correction blocks (81) are provided with a threaded groove (811) on the side facing away from each other, a correction rod (82) is connected to the inner thread of one of the threaded grooves (811), and the correction rod (82) is plugged into the corresponding communicating hole (732) and extends to the outside of the auxiliary tube (7).

6. The lifting mechanism for intelligent rail dressing and grinding equipment according to claim 5 is characterized in that: The correction rod (82) comprises a first threaded section (821) threadedly connected to the thread groove (811), a smooth section (822) plugged into the connecting hole (732), and a second threaded section (823) located on a side of the smooth section (822) away from the first threaded section (821), the second threaded section (823) being used for threaded connection to the connecting hole (732), and the length of the smooth section (822) being greater than the depth of the mounting groove (731).

7. The lifting mechanism for intelligent rail dressing and grinding equipment according to claim 5 is characterized in that: A vent hole (733) is provided on the bottom wall of each installation groove (731).

8. The lifting mechanism for intelligent rail dressing and grinding equipment according to claim 3 is characterized by: The auxiliary pipe (7) comprises an elbow pipe (72) and a straight pipe (73); a connecting hole (62) is provided on the side wall of the slipknot rod (6); one end of the elbow pipe (72) is inserted into the connecting hole (62) and is threadedly connected to the slipknot rod (6); the other end of the elbow pipe (72) is threadedly connected to the straight pipe (73) and is in communication with each other.

9. The lifting mechanism for intelligent rail dressing and grinding equipment according to claim 3 is characterized by: Two supporting grooves (521) are provided on a side surface of the piston block (52) close to the regulating tube (51); an end surface of the regulating tube (51) close to the piston block (52) is fixedly connected to two supporting blocks (511); one supporting block (511) corresponds to one supporting groove (521); and each supporting block (511) is used for plugging into a corresponding supporting groove (521).

10. The lifting mechanism for intelligent rail dressing and grinding equipment according to claim 2, characterized in that: The ends of the regulating tube (51) and the slipknot rod (6) close to each other are fixedly connected with flanges (512), and the two flanges (512) are connected with locking assemblies (9), and the locking assemblies (9) include two arc-shaped rods (91), and each arc-shaped rod (91) is provided with receiving sections (92) at both ends, and each receiving section (92) is closely attached to one of the receiving sections (92) on the adjacent arc-shaped rod (91), and the two closely attached receiving sections (92) are fixedly connected by fasteners, and the inner side wall of each arc-shaped rod (91) is provided with a placement groove (911), and the two flanges (512) are closely attached to each other and inserted into each placement groove (911).

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