Gantry type lifting device

Abstract

The invention discloses a gantry type lifting device, relates to the technical field of wheel set maintenance, and aims to solve the problem of unsafe operation of a crane. The lifting mechanism is arranged on the portal frame, the lifting mechanism comprises two supporting arms used for supporting a wheel pair, the two supporting arms are arranged on the portal frame in a liftable mode, and the two supporting arms are oppositely arranged on the two sides of the portal frame; the positioning mechanism is arranged on the supporting arm and is used for positioning the wheel pair; the anti-overturning mechanism is movably arranged in the direction perpendicular to the plane where the portal frame is located, the anti-overturning mechanism comprises a lifting limiting rod, and the limiting rod is arranged in a clamping groove of the gearbox in a pluggable mode, so that the stability of the wheel pair in the lifting process can be ensured, and the safety and reliability in the lifting process are enhanced.

Description

Technical Field

[0001] The present invention relates to the technical field of wheelset maintenance, and more particularly to a gantry-type lifting device. Background Art

[0002] A wheelset is the part of a rolling stock that contacts the rails. It consists of two wheels securely mounted on a single axle. The wheelset's function is to ensure the rolling stock's operation and steering on the rails, bearing all static and dynamic loads from the rolling stock, transferring them to the rails, and transferring loads caused by track irregularities to the rolling stock's various components.

[0003] In the field of wheelset maintenance for railway vehicles, traditional methods rely primarily on manual labor or simple tools to lift and move wheelsets. However, manual wheelset lifting not only consumes considerable physical effort from maintenance personnel but is also prone to safety hazards due to fatigue and errors. When using a crane, the hoisting device bypasses the ends of the wheelset for lifting and alignment. This process can easily lead to dangerous shaking due to stretching of the hoisting device or workers shifting the lifting position. This shaking is particularly severe when the crane is moving, often resulting in bumps and long alignment times.

[0004] Therefore, how to solve the problem of unsafe crane operation is an urgent problem to be solved by those skilled in the art. Summary of the Invention

[0005] In view of this, an object of the present invention is to provide a gantry-type lifting device that can ensure the stability of the wheelset during the lifting process and enhance the safety and reliability of the lifting process.

[0006] In order to achieve the above object, the present invention provides the following technical solutions:

[0007] A gantry lifting device, comprising:

[0008] gantry;

[0009] A lifting mechanism is provided on the gantry, and the lifting mechanism includes two support arms for supporting the wheelset, the two support arms are escalably provided on the gantry, and the two support arms are provided on opposite sides of the gantry;

[0010] A positioning mechanism is provided on the support arm, and is used to position the wheelset;

[0011] The anti-turnover mechanism is arranged to move in a direction perpendicular to the plane where the gantry is located. The anti-turnover mechanism includes a liftable limit rod, and the limit rod is pluggable in a card slot of the gear box.

[0012] Preferably, it also includes a first driving mechanism and a transmission mechanism arranged on the top of the gantry, the output end of the first driving mechanism is connected to the transmission mechanism, the transmission mechanism extends along the extension direction of the gantry, and the output end of the transmission mechanism is connected to the lifting mechanism.

[0013] Preferably, the transmission mechanism includes a worm gear reducer, a transmission shaft and a conversion mechanism, the input end of the worm gear reducer is connected to the first drive mechanism, the output end of the worm gear reducer is connected to the two transmission shafts, and the transmission shafts are connected to the corresponding lifting mechanisms through their respective conversion mechanisms.

[0014] Preferably, the lifting mechanism includes a screw rod and a screw rod nut that moves axially along the screw rod, one end of the screw rod is connected to the conversion mechanism, and the other end of the screw rod is rotatably connected to the base. The screw rod nut is connected to the support frame through the adapter block. The support frame is located on the inner side of the gantry frame, and a support arm is provided on the support frame.

[0015] Preferably, the support arm extends along the extension direction of the gantry, and a positioning mechanism is provided on the support arm. The positioning mechanism has a trapezoidal groove, and an anti-slip pad is provided in the trapezoidal groove.

[0016] Preferably, a safety nut that moves along the axial direction of the screw rod is provided on the screw rod, the safety nut is located below the screw rod nut, the safety nut and the screw rod nut are matched along the axial clearance of the screw rod, a detection switch is provided on the screw rod nut, and a detection plate corresponding to the detection switch is provided on the safety nut.

[0017] Preferably, a portal-type cross beam is provided on the support frame, the cross beam is arranged to move in a direction perpendicular to the plane where the gantry is located, and the anti-overturning mechanism is arranged on the cross beam.

[0018] Preferably, the anti-overturning mechanism further includes a fixed seat and a lifting arm, the fixed seat is arranged on the cross beam, the lifting arm is liftable and arranged on the fixed seat, and the bottom end of the lifting arm is connected to the limit rod.

[0019] Preferably, the cross beam is driven by the second driving mechanism, the lifting arm is driven by the third driving mechanism, and the first driving mechanism, the second driving mechanism and the third driving mechanism are all connected to the control device by signal.

[0020] Preferably, linear guide rail structures are provided between the gantry and the support frame, between the support frame and the cross beam, and between the lifting arm and the fixed seat.

[0021] The gantry lifting device provided by the present invention includes a gantry, a lifting mechanism, a positioning mechanism and an anti-rollover mechanism. Specifically, the gantry provides an installation basis for the lifting mechanism, the positioning mechanism and the anti-rollover mechanism. The gantry is used as a supporting frame to provide stable support for the entire device. The lifting mechanism is arranged on the gantry. The lifting mechanism includes two support arms for supporting the wheelset. The two support arms are liftable and arranged on the gantry, which can quickly lift the wheelset to a suitable height, making it convenient for maintenance personnel to inspect, measure and repair various parts of the wheelset, significantly reducing the time for manual handling or adjusting the position of the wheelset by other inefficient methods, thereby greatly improving the overall maintenance efficiency. The two support arms are relatively arranged on both sides of the gantry to form a symmetrical structure, which can ensure that the wheelset is evenly stressed during the lifting process, avoiding shaking or tilting caused by uneven force on one side, thereby significantly improving the stability of the lifting process, and the two support arms work simultaneously and can be lifted and lowered synchronously, ensuring that the wheelset always remains in a horizontal state during the lifting process, avoiding instability caused by height difference, and enhancing the safety and reliability of the lifting process.

[0022] The positioning mechanism is arranged on the support arm and is used to position the wheelset. The positioning mechanism can accurately position the wheelset to ensure the stability of the wheelset during the lifting process. The anti-rollover mechanism is arranged to move in a direction perpendicular to the plane where the gantry is located. The anti-rollover mechanism includes a liftable limit rod, and the limit rod is pluggable and arranged in the slot of the gear box. By adjusting the position of the limit rod, it can be accurately inserted into the slot of the gear box, thereby effectively preventing the wheelset with the gear box from flipping during the lifting process, further enhancing the stability of the wheelset during the lifting process, thereby enhancing the safety and reliability of the lifting process. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0024] Figure 1 This is a schematic structural diagram of the gantry lifting device provided by the present invention;

[0025] Figure 2 A front view of the gantry lifting device provided by the present invention;

[0026] Figure 3 A side view of the gantry lifting device provided by the present invention;

[0027] Figure 4 A partial enlarged view of the lifting mechanism provided by the present invention;

[0028] Figure 5 A partial enlarged view of the gantry lifting device provided by the present invention;

[0029] Figure 6 This is a partial enlarged view of the anti-flip mechanism provided by the present invention.

[0030] Reference numerals:

[0031] 100-wheelset; 200-gearbox;

[0032] 1-Gantry;

[0033] 2-lifting mechanism, 21-support arm, 22-screw, 23-screw nut, 24-adapter block, 25-hand support, 26-safety nut, 27-detection switch, 28-detection plate;

[0034] 3- Positioning mechanism;

[0035] 4-anti-flip mechanism, 41-limiting rod, 42-fixed seat, 43-lifting arm;

[0036] 5- first driving mechanism;

[0037] 6- transmission mechanism, 61- worm gear reducer, 62- transmission shaft, 63- conversion mechanism;

[0038] 7- base;

[0039] 8- cross beam;

[0040] 9- second driving mechanism;

[0041] 10- third driving mechanism;

[0042] 11-Linear guide structure;

[0043] 12-Limit pin. DETAILED DESCRIPTION

[0044] The following will clearly and completely describe the technical solutions in the embodiments of the present invention 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. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0045] In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connect," "fixed," etc. should be understood broadly. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0046] It should be noted that the directional words such as "below" below are defined based on the drawings in the specification.

[0047] The core of the present invention is to provide a gantry-type lifting device, which can ensure the stability of the wheelset 100 during the lifting process and enhance the safety and reliability of the lifting process.

[0048] Please refer to Figure 1 and Figure 2 A gantry lifting device includes a gantry 1, a lifting mechanism 2, a positioning mechanism 3 and an anti-overturning mechanism 4.

[0049] Specifically, the gantry 1 provides an installation basis for the lifting mechanism 2, the positioning mechanism 3 and the anti-rollover mechanism 4. The gantry 1 is used as a supporting frame to provide stable support for the entire device. The lifting mechanism 2 is arranged on the gantry 1. The lifting mechanism 2 includes two support arms 21 for supporting the wheelset 100. The two support arms 21 are liftable and arranged on the gantry 1, which can quickly lift the wheelset 100 to a suitable height, making it convenient for maintenance personnel to inspect, measure and repair various parts of the wheelset 100, significantly reducing manual handling or other inefficient methods. The time for adjusting the position of the wheelset 100 is shortened, thereby greatly improving the overall maintenance efficiency. The two support arms 21 are relatively arranged on both sides of the gantry 1 to form a symmetrical structure, which can ensure that the wheelset 100 is evenly stressed during the lifting process, avoiding shaking or tilting due to uneven force on one side, thereby significantly improving the stability of the lifting process. Moreover, the two support arms 21 work at the same time and can be raised and lowered synchronously, ensuring that the wheelset 100 always remains in a horizontal state during the lifting process, avoiding instability caused by height difference, and enhancing the safety and reliability of the lifting process.

[0050] The positioning mechanism 3 is provided on the support arm 21 and is used to position the wheelset 100. The positioning mechanism 3 can accurately position the wheelset 100 to ensure the stability of the wheelset 100 during the lifting process. The anti-rollover mechanism 4 is arranged to move in a direction perpendicular to the plane where the gantry 1 is located. The anti-rollover mechanism 4 includes a liftable limit rod 41. The limit rod 41 is pluggable and arranged in a slot of the gear box 200. By adjusting the position of the limit rod 41, it can be accurately inserted into the slot of the gear box 200, thereby effectively preventing the wheelset 100 with the gear box 200 from flipping during the lifting process, further enhancing the stability of the wheelset 100 during the lifting process, thereby enhancing the safety and reliability of the lifting process.

[0051] The gantry lifting device arranged in the above manner realizes a fast, stable and safe wheelset 100 lifting function through the coordinated action of the lifting mechanism 2, the positioning mechanism 3 and the anti-rollover mechanism 4, significantly improves the maintenance efficiency and enhances the stability and safety of the lifting process.

[0052] In the above embodiment, it also includes a first driving mechanism 5 and a transmission mechanism 6 arranged on the top of the gantry 1. The output end of the first driving mechanism 5 is connected to the transmission mechanism 6. The transmission mechanism 6 extends along the extension direction of the gantry 1. The output end of the transmission mechanism 6 is connected to the lifting mechanism 2.

[0053] It should be noted that the introduction of first drive mechanism 5 enables automated actuation of lifting mechanism 2, eliminating the need for manual operation during the lifting process. This significantly reduces labor intensity, improves work efficiency, mitigates safety risks caused by human error, and reduces reliance on operator skill. Transmission mechanism 6 transmits power from first drive mechanism 5 to lifting mechanism 2, enabling precise control of lifting height and speed, ensuring that wheelset 100 rises smoothly to the desired precise position during the lifting process, meeting diverse maintenance requirements and enhancing the adaptability of the device.

[0054] Transmission mechanism 6 extends along the extension direction of gantry 1, efficiently and stably transmitting power from first drive mechanism 5 to lifting mechanism 2. This avoids power loss and instability during power transmission, ensuring efficient and stable lifting. The synergistic effect of first drive mechanism 5 and transmission mechanism 6 further ensures the synchronous raising and lowering of the two support arms 21, ensuring that wheelset 100 remains horizontal during the lifting process, avoiding shaking or tilting caused by height differences and significantly improving the stability of the lifting process.

[0055] The placement of the first drive mechanism 5 atop the gantry 1 and the transmission mechanism 6 extending along it tightly integrate the power system with the support frame, creating a more rational overall layout and enhancing the overall structural stability of the device. The stable transmission provided by the transmission mechanism 6 reduces vibration and shaking caused by uneven power transmission during the lifting process, further improving the stability of the device during operation and extending its service life.

[0056] In the above case, the transmission mechanism 6 includes a worm gear reducer 61, a transmission shaft 62 and a conversion mechanism 63. The input end of the worm gear reducer 61 is connected to the first drive mechanism 5, and the output end of the worm gear reducer 61 is connected to the two transmission shafts 62. The transmission shafts 62 are connected to the corresponding lifting mechanism 2 through their respective conversion mechanisms 63.

[0057] It can be understood that the output end of the worm gear reducer 61 is connected to two transmission shafts 62, which are respectively connected to the corresponding lifting mechanisms 2 through the conversion mechanism 63, which can ensure the balanced power distribution of the two lifting mechanisms 2, and further ensure the synchronous lifting and lowering of the two support arms 21, so that the wheelset 100 always remains in a horizontal state during the lifting process.

[0058] The worm gear reducer 61 features a high reduction ratio and high torque output, effectively reducing and amplifying the power provided by the first drive mechanism 5, thereby providing sufficient driving force for the lifting mechanism 2 and ensuring adequate power support when lifting heavy objects (such as wheelset 100). The deceleration effect of the worm gear reducer 61 enables stable low-speed operation, avoiding vibration and impact caused by excessive speed, making the wheelset 100 more stable during the lifting process and further improving the stability of the lifting process. Furthermore, the worm gear reducer 61 has high transmission accuracy, ensuring the rotational accuracy and stability of the drive shaft 62, thereby ensuring the precise and synchronous lifting and lowering movements of the lifting mechanism 2 and avoiding tilting or shaking of the wheelset 100 due to transmission errors.

[0059] Furthermore, the worm gear reducer 61 has a self-locking function. When the driving mechanism stops working, the reducer can automatically lock the transmission shaft 62 to prevent the wheelset 100 from sliding down due to its own weight, thereby significantly improving the safety and reliability of the lifting process, especially when maintenance personnel operate the wheelset 100, which can effectively prevent the occurrence of accidents.

[0060] Please refer to Figure 3 and Figure 4 The lifting mechanism 2 includes a screw rod 22 and a screw nut 23 that moves along the axial direction of the screw rod 22. One end of the screw rod 22 is connected to the conversion mechanism 63, and the other end of the screw rod 22 is rotatably connected to the base 7. The screw nut 23 is connected to the support frame 25 through the adapter block 24. The support frame 25 is located on the inner side of the gantry 1, and a support arm 21 is provided on the support frame 25.

[0061] It should be noted that the coordination of the screw rod 22 and the screw nut 23 enables high-precision linear motion, ensuring that the wheelset 100 is raised and lowered smoothly and precisely in the vertical direction during the lifting process, avoiding sway or tilting caused by unstable movement, and significantly improving the stability of the lifting process. One end of the screw rod 22 is connected to the conversion mechanism 63, and the other end is rotatably connected to the base 7. This design ensures that the screw rod 22 maintains a stable rotational state during operation, reduces transmission errors caused by sway or offset of the screw rod 22, and further improves the reliability of the lifting mechanism 2.

[0062] Because the device is equipped with two support arms 21, each driven by a screw 22 and a screw nut 23, the coordinated action of the conversion mechanism 63 and the drive shaft 62 ensures the synchronous movement of the two screws 22, thereby ensuring that the two support arms 21 remain synchronized during the lifting process, keeping the wheelset 100 in a horizontal position throughout the lifting process and avoiding instability caused by height differences. The screw nut 23 is connected to the support bracket 25 via an adapter block 24. This connection method ensures the stability of power transmission, avoids motion errors caused by loose connections, and further improves the synchronization of the lifting process.

[0063] Please refer to Figure 5 The support arm 21 extends along the extension direction of the gantry 1. The support arm 21 is provided with a positioning mechanism 3. The positioning mechanism 3 has a trapezoidal groove, and an anti-slip pad is provided in the trapezoidal groove.

[0064] It is understood that the trapezoidal groove design of the positioning mechanism 3 can match the shape of the wheelset 100, providing a good positioning effect for the wheelset 100, ensuring that the wheelset 100 does not undergo lateral displacement or rolling during the lifting process, thereby significantly improving the stability of the wheelset 100. Moreover, the trapezoidal groove design has a certain degree of versatility and can accommodate wheelsets 100 of different specifications and sizes, reducing the positioning difficulties caused by the size differences of the wheelset 100 and increasing the applicability and flexibility of the device.

[0065] Furthermore, anti-skid pads are provided within the trapezoidal grooves to increase friction between the wheelset 100 and the support arm 21, preventing the wheelset 100 from sliding due to vibration or external forces during lifting or maintenance, further enhancing the positioning accuracy and stability of the wheelset 100. The anti-skid pads not only prevent slipping but also act as a buffer to a certain extent, reducing rigid contact between the wheelset 100 and the support arm 21, preventing damage to the wheelset 100 or the device due to collisions, and extending the service life of the equipment.

[0066] The positioning mechanism 3 is limited by a limit pin 12. When the position of the positioning mechanism 3 needs to be adjusted, the limit pin 12 is removed from the positioning hole of the support arm 21. After the positioning mechanism 3 is moved to the appropriate position, the limit pin 12 is inserted into the positioning hole of the support arm 21. Multiple positioning holes are provided on the support arm 21 to adjust the position of the positioning mechanism 3 in multiple ways, thereby supporting wheelsets 100 of various specifications. Slide grooves are provided on both sides of the positioning mechanism 3 to cooperate with the slide rails on the support arm 21 to guide and limit the positioning mechanism 3.

[0067] On the basis of the above embodiment, a safety nut 26 that moves along the axial direction of the screw rod 22 is provided on the screw rod 22, and the safety nut 26 is located below the screw nut 23. The safety nut 26 and the screw nut 23 are matched with the axial clearance of the screw rod 22. A detection switch 27 is provided on the screw nut 23, and a detection plate 28 corresponding to the detection switch 27 is provided on the safety nut 26.

[0068] It should be noted that the safety nut 26 is located below the screw nut 23 and cooperates with the screw nut 23 along the axial clearance of the screw 22 to form a dual protection mechanism. During normal operation, the screw nut 23 is responsible for driving the hand support 25 to rise and fall, while the safety nut 26 serves as a backup protection device to prevent accidental sliding due to failure of the screw nut 23, significantly improving the safety of the lifting process. When the screw nut 23 loses its supporting capacity due to a fault, the safety nut 26 can timely clamp the screw 22 to prevent the hand support 25 and the wheelset 100 from sliding down due to their own weight, avoiding possible equipment damage or personal injury, and ensuring the safety and reliability of the maintenance process. The dual cooperation of the safety nut 26 and the screw nut 23 further enhances the structural stability of the screw 22 transmission and improves the reliability of the entire device.

[0069] Among them, the screw nut 23 is provided with a detection switch 27, and the safety nut 26 is provided with a detection plate 28 corresponding to the detection switch 27. The detection switch 27 can monitor the axial distance between the screw nut 23 and the safety nut 26 in real time. When the detection switch 27 detects a change in the distance between itself and the detection plate 28, it indicates that the screw nut 23 has become loose or worn. A signal can be sent to the control device in a timely manner to remind the operator to conduct timely troubleshooting and repairs, thereby reducing equipment downtime and improving equipment operating efficiency. The cooperation between the detection switch 27 and the detection plate 28 can automatically monitor the status of the screw nut 23, eliminating the need for frequent manual inspections, simplifying the operating process and improving operating efficiency.

[0070] In the above embodiment, a portal-type cross beam 8 is provided on the support frame 25 , and the cross beam 8 is arranged to move in a direction perpendicular to the plane where the gantry 1 is located, and the anti-overturning mechanism 4 is provided on the cross beam 8 .

[0071] It is understood that the design of the gate-type cross beam 8 can provide a stable installation base for the anti-turnover mechanism 4, ensuring that the anti-turnover mechanism 4 remains stable during operation and preventing the anti-turnover function from failing due to shaking or instability of the cross beam 8. It also optimizes the spatial layout of the support frame 25, making the structure of the entire device more compact, reducing space waste, and improving space utilization.

[0072] The crossbeam 8 is arranged to move in a direction perpendicular to the plane of the gantry 1, so that the anti-rollover mechanism 4 can be accurately positioned and adjusted according to the specific position of the wheelset 100. By adjusting the position of the crossbeam 8, the limit rod 41 of the anti-rollover mechanism 4 can be accurately inserted into the slot of the gearbox 200, thereby effectively preventing the wheelset 100 from rolling over during the lifting process, further enhancing the stability of the wheelset 100. The movable arrangement of the crossbeam 8 allows the position of the anti-rollover mechanism 4 to be flexibly adjusted according to the different specifications of the wheelset 100, improving the adaptability of the device to different wheelsets 100. Regardless of the size of the wheelset 100 or how the position of the gearbox 200 changes, the anti-rollover mechanism 4 can find the appropriate position through the movement of the crossbeam 8, ensuring the effectiveness of the anti-rollover function.

[0073] Please refer to Figure 2 、 Figure 3 and Figure 6 The anti-overturning mechanism 4 also includes a fixed seat 42 and a lifting arm 43. The fixed seat 42 is arranged on the cross beam 8. The lifting arm 43 is liftable and arranged on the fixed seat 42. The bottom end of the lifting arm 43 is connected to the limit rod 41.

[0074] It should be noted that the fixing base 42 is located on the crossbeam 8 and provides a stable mounting base for the lifting arm 43 and the limiting rod 41. The structural design of the fixing base 42 can withstand the torque and load generated by the lifting arm 43 during the lifting process, ensuring that the anti-rollover mechanism 4 will not fail due to shaking or loosening during operation, significantly improving the stability of the anti-rollover mechanism 4. The lifting arm 43 is arbitrarily mounted on the fixing base 42, and its bottom end is connected to the limiting rod 41, allowing the limiting rod 41 to be adjusted in height according to the specific position of the wheelset 100, ensuring that the limiting rod 41 can be accurately inserted into the slot of the gearbox 200, thereby effectively preventing the wheelset 100 from flipping during the lifting process.

[0075] Through the lifting function of the lifting arm 43, the height of the limit rod 41 can be flexibly adjusted to adapt to gearboxes 200 of different heights, thereby improving the adaptability of the device to different wheel sets 100. Regardless of the size of the wheelset 100 or how the position of the gearbox 200 changes, the anti-rollover mechanism 4 can find a suitable position through the adjustment of the lifting arm 43, thereby ensuring the effectiveness of the anti-rollover function.

[0076] In the above situation, the cross beam 8 is driven by the second driving mechanism 9, and the lifting arm 43 is driven by the third driving mechanism 10. The first driving mechanism 5, the second driving mechanism 9 and the third driving mechanism 10 are all connected to the control device by signal.

[0077] As can be understood, the first drive mechanism 5 controls the raising and lowering of the lifting mechanism 2, the second drive mechanism 9 controls the movement of the crossbeam 8, and the third drive mechanism 10 controls the raising and lowering of the lifting arm 43, thereby achieving automated operations of lifting, anti-flip positioning, and anti-flip height adjustment. The coordinated operation of multiple drive mechanisms can significantly improve the operating efficiency and precision of the device.

[0078] The first drive mechanism 5, the second drive mechanism 9, and the third drive mechanism 10 are all connected to a control device via signal transmission. The control device controls the first drive mechanism 5, the second drive mechanism 9, and the third drive mechanism 10, thereby automating the lifting, movement of the crossbeam 8, and adjustment of the lifting arm 43. This reduces manual intervention, reduces labor intensity, and improves operational efficiency and safety. Through the control device's precise control of each drive mechanism, the device can quickly adapt to wheelsets 100 of varying specifications and positions.

[0079] In the above embodiment, linear guide rail structures 11 are provided between the gantry 1 and the support frame 25 , between the support frame 25 and the cross beam 8 , and between the lifting arm 43 and the fixing seat 42 .

[0080] It should be noted that the linear guide structure 11 provides high-precision linear motion guidance, ensuring that the support frame 25, crossbeam 8, and lifting arm 43 move smoothly and accurately along the predetermined trajectory during movement. The linear guide structure 11 has a high load-bearing capacity and can withstand large loads. This ensures that heavy objects (such as wheelset 100) are not damaged by overload when lifting and moving, thereby improving the load-bearing capacity and service life of the device.

[0081] In summary, the gantry-type lifting device provided by the present invention can quickly and smoothly lift the wheelset 100 to the required height through the coordinated action of the first drive mechanism 5, the transmission mechanism 6 and the lifting mechanism 2. At the same time, the positioning mechanism 3 and the anti-flip mechanism 4 ensure the stability of the wheelset 100 during the lifting process, significantly improving the maintenance efficiency. The two support arms 21 are synchronously driven by the transmission mechanism 6 to ensure that the wheelset 100 always remains in a horizontal state during the lifting process, avoiding instability caused by height differences, and further enhancing the safety and reliability of the lifting process. The worm gear reducer 61 and the linear guide structure 11 are used to ensure high-precision power transmission and low-speed and smooth operation, reduce vibration and impact, and improve the operating stability of the device. The device is equipped with a safety nut 26, an anti-flip mechanism 4 and a worm gear reducer 61 with a self-locking function, forming a multiple safety guarantee mechanism, which effectively prevents the wheelset 100 from sliding, flipping or accidentally sliding down during the lifting process, significantly improving the safety of the maintenance process.

[0082] It should be noted that, in this specification, relational terms such as first and second are merely used to distinguish one entity from other entities, but do not necessarily require or imply any actual relationship or order between these entities.

[0083] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0084] The above is a detailed introduction to a gantry lifting device provided by the present invention. Specific examples are used herein to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method and core ideas of the present invention. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present invention, the present invention can also be improved and modified in a number of ways, and these improvements and modifications also fall within the scope of protection of the present invention.

Claims

1. A gantry lifting device, characterized in that: include: Gantry (1); A lifting mechanism (2) is provided on the gantry (1), the lifting mechanism (2) comprising two support arms (21) for supporting the wheelset (100), the two support arms (21) being movably provided on the gantry (1), and the two support arms (21) being provided on opposite sides of the gantry (1); A positioning mechanism (3) is provided on the support arm (21), and the positioning mechanism (3) is used to position the wheelset (100); The anti-turnover mechanism (4) is arranged to move in a direction perpendicular to the plane where the gantry (1) is located. The anti-turnover mechanism (4) includes a liftable limit rod (41). The limit rod (41) is pluggable in a slot provided in the gear box (200).

2. The gantry lifting device according to claim 1, characterized in that: It also includes a first driving mechanism (5) and a transmission mechanism (6) arranged on the top of the gantry (1), wherein the output end of the first driving mechanism (5) is connected to the transmission mechanism (6), the transmission mechanism (6) extends along the extension direction of the gantry (1), and the output end of the transmission mechanism (6) is connected to the lifting mechanism (2).

3. The gantry lifting device according to claim 2, characterized in that: The transmission mechanism (6) includes a worm gear reducer (61), a transmission shaft (62) and a conversion mechanism (63), wherein the input end of the worm gear reducer (61) is connected to the first driving mechanism (5), and the output end of the worm gear reducer (61) is connected to the two transmission shafts (62), and the transmission shafts (62) are connected to the corresponding lifting mechanism (2) through their respective conversion mechanisms (63).

4. The gantry lifting device according to claim 3, characterized in that: The lifting mechanism (2) includes a screw rod (22) and a screw rod nut (23) that moves along the axial direction of the screw rod (22), one end of the screw rod (22) is connected to the conversion mechanism (63), and the other end of the screw rod (22) is rotatably connected to the base (7), and the screw rod nut (23) is connected to the support frame (25) through the adapter block (24), and the support frame (25) is located on the inner side of the gantry (1), and the support arm (21) is provided on the support frame (25).

5. The gantry lifting device according to claim 4, characterized in that: The support arm (21) extends along the extension direction of the gantry (1), and the support arm (21) is provided with the positioning mechanism (3), the positioning mechanism (3) having a trapezoidal groove, and an anti-slip pad is provided in the trapezoidal groove.

6. The gantry lifting device according to claim 4, characterized in that: The screw rod (22) is provided with a safety nut (26) that moves along the axial direction of the screw rod (22). The safety nut (26) is located below the screw rod nut (23). The safety nut (26) and the screw rod nut (23) are matched with each other along the axial clearance of the screw rod (22). The screw rod nut (23) is provided with a detection switch (27). The safety nut (26) is provided with a detection plate (28) corresponding to the detection switch (27).

7. The gantry lifting device according to claim 4, characterized in that: The support frame (25) is provided with a portal-type cross beam (8), the cross beam (8) is arranged to move in a direction perpendicular to the plane where the gantry (1) is located, and the anti-turnover mechanism (4) is provided on the cross beam (8).

8. The gantry lifting device according to claim 7, characterized in that: The anti-turnover mechanism (4) further comprises a fixed seat (42) and a lifting arm (43), wherein the fixed seat (42) is provided on the cross beam (8), and the lifting arm (43) is provided on the fixed seat (42) in a liftable manner, wherein the bottom end of the lifting arm (43) is connected to the limiting rod (41).

9. The gantry lifting device according to claim 8, characterized in that: The cross beam (8) is driven by a second drive mechanism (9), the lifting arm (43) is driven by a third drive mechanism (10), and the first drive mechanism (5), the second drive mechanism (9) and the third drive mechanism (10) are all connected to the control device signal.

10. The gantry lifting device according to claim 9, characterized in that: A linear guide rail structure (11) is provided between the gantry (1) and the support frame (25), between the support frame (25) and the cross beam (8), and between the lifting arm (43) and the fixed seat (42).

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