Lifting type portal frame car machine of all-underground bogie intelligent reloading system based on lead screw and nut transmission

Abstract

The invention provides a lifting type portal frame car machine of a full-underground bogie intelligent reloading system based on lead screw and nut transmission. The lifting type portal frame car machine comprises two rail beams arranged in parallel, a bracket is arranged on the rail beams, a dragging head is arranged on the bracket, and the bracket and the dragging head are used for bearing a lifted object; the lifting assembly comprises a supporting piece, a lifting piece and a first driving unit; the supporting pieces and the lifting piece are used for supporting a track beam, the first supporting piece is in transmission connection with the lifting piece, and the first driving unit is used for driving the supporting pieces and the lifting piece to generate relative movement so as to drive the track beam to ascend and descend; lifting assemblies are arranged at the two ends of the track beam; the monitoring assembly is used for monitoring the gradient of the track beam; and the control unit is used for receiving the inclination, monitored by the monitoring assembly, of the track beam, and when the inclination of the track beam exceeds an angle threshold value, the lifting speeds of the lifting assemblies are adjusted, so that the track beam is kept horizontal.

Description

Technical Field

[0001] The present invention relates to the field of train maintenance, and in particular to a lifting gantry crane for a fully underground intelligent bogie replacement system based on a screw nut drive. Background Art

[0002] In the related art, there are two ways to replace the faulty bogie of an EMU. One is to use the existing car-lifting machine in the maintenance depot to lift the entire EMU, and then replace the faulty bogie. This kind of car-lifting operation for the entire EMU for the replacement of a single bogie is inefficient, takes a long time to operate, and consumes a lot of labor and machine costs. The other is to set up bogie replacement equipment in the maintenance depot, but the equipment generally fixes the gantry-type car-lifting machine on both sides of the maintenance track, and can only realize the replacement of the bogie of the vehicle on this track. When the track is in the bogie replacement operation, the track cannot be operated to other platforms and adjacent tracks. In addition, the device has a large foundation and a large structural size, occupies the working space on both sides of the track, and has a high manufacturing cost.

[0003] The car lifting machine in the prior art is not convenient for inspecting and repairing the train. In addition, the car lifting machine in the prior art cannot ensure the safety during the lifting process. Summary of the invention

[0004] The present invention provides a lifting gantry crane for a fully underground bogie intelligent replacement system based on a screw nut transmission, which can provide a larger maintenance space and ensure the safety during the maintenance process, including: Two track beams arranged in parallel, a bracket is arranged on the track beam, a tractor is arranged on the bracket, and the bracket and the tractor are used to carry the lifted object; A lifting assembly comprises a support member, a lifting member and a first driving unit; the support member and the lifting member are used to support the track beam, the first support member and the lifting member are in transmission connection, and the first driving unit is used to drive the support member and the lifting member to move relative to each other, so as to drive the track beam to be lifted and lowered; both ends of the track beam are provided with lifting assemblies; A monitoring component for monitoring the inclination of the track beam; The control unit is used to receive the inclination of the track beam monitored by the monitoring component, and when the inclination of the track beam exceeds an angle threshold, adjust the lifting speeds of multiple lifting components to keep the track beam horizontal.

[0005] Optionally, a first movable track is opened on the side of the track beam, and the bracket can move along the first movable track under the drive of the second driving unit.

[0006] Optionally, a third driving unit and a second moving track are provided on the bracket, and the third driving unit can drive the tractor to move along the second moving track to adjust the distance between the tractor and the lifted object.

[0007] Optionally, the lifting member is a screw, the first driving unit is fixed on a support member, a screw positioning hole is provided on the support member, one end of the lifting member is fixed on the ground, and the other end of the lifting member passes through the screw positioning hole and is transmission-connected to the first driving unit.

[0008] Optionally, the first driving unit includes a servo motor and a worm gear reducer, the servo motor is used to provide torque input to the worm gear reducer, the worm gear reducer is used to adjust the direction and magnitude of the torque input by the servo motor, and provide torque output for the lifting member to drive the lifting member to rotate, and the lifting member drives the support member to lift and lower by rotating.

[0009] Optionally, the monitoring component includes an image acquisition unit and an image processing unit, the image acquisition unit is used to acquire images of the track beam during the lifting process, and the image processing unit is used to determine the inclination of the track beam according to the images acquired by the image acquisition unit.

[0010] Optionally, an image processing algorithm is provided in the image processing unit, and the image processing unit obtains image coordinates of two ends of the track beam in the track beam image, and determines the inclination of the track beam according to the image coordinates.

[0011] Optionally, the monitoring component also includes a pressure monitoring unit and a height monitoring unit. The pressure monitoring unit is used to monitor the pressure carried by the tractor. When the pressure carried by the tractor reaches a warning threshold, an alarm signal is issued and the lifting component is shut down; the height monitoring unit is used to monitor the current height of the track beam.

[0012] Optionally, when the inclination of the track beam does not meet the requirement, the control unit adjusts the lifting speed of the plurality of lifting assemblies to keep the track beam horizontal, including: The control unit determines the height difference between the two ends of the track beam according to the inclination of the track beam; The control unit determines the current height of the track beam; Determine the remaining lifting time required to reach a preset height based on the current lifting speed of the lifting assembly and the current height of the track beam; The lifting speed of the lifting assembly on the side of the track beam with a lower height is determined based on the remaining lifting time and the height difference.

[0013] Optionally, the angle threshold value ranges from 0 to 1°.

[0014] The technical solution provided by the embodiments of the present disclosure has the following beneficial effects: In an embodiment of the present disclosure, a lifting gantry crane for a fully underground intelligent bogie replacement system based on a screw-nut transmission is provided. The lifting gantry crane for a fully underground intelligent bogie replacement system based on a screw-nut transmission includes a track beam, a bracket and a tractor for carrying a train, a plurality of lifting components for raising and lowering the track beam, a monitoring component for monitoring the horizontality of the track beam, and a control unit for controlling the moving component.

[0015] By installing lifting components at both ends of the track beam and using brackets and tractors to carry the train, a larger maintenance space can be provided for the train. The track beam can be lifted and lowered smoothly through monitoring components and control units, ensuring the safety of the train during lifting and lowering. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 A structural block diagram of a lifting gantry crane for a fully underground bogie intelligent replacement system based on a screw-nut transmission provided in an embodiment of the present disclosure; Figure 2 A schematic structural diagram of a lifting gantry crane for a fully underground intelligent bogie replacement system based on a screw-nut transmission provided in an embodiment of the present disclosure.

[0018] The reference numerals are as follows: 1: track beam; 11: bracket; 111: second drive unit; 112: first moving track; 12: tractor; 121: third drive unit; 122: second moving track; 2: lifting assembly; 21: supporting member; 22: lifting member; 221: lifting member fixing plate; 23: first driving unit; 231: servo motor; 232: turbine reducer; 3: monitoring component; 31: image acquisition unit; 32: image processing unit; 33: pressure monitoring unit; 34: height monitoring unit; 4: Control unit. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are 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.

[0020] Figure 1 A structural block diagram of a lifting gantry crane for a fully underground intelligent bogie replacement system based on screw-nut transmission provided in an embodiment of the present disclosure.

[0021] Figure 2 A schematic structural diagram of a lifting gantry crane for a fully underground intelligent bogie replacement system based on a screw-nut transmission provided in an embodiment of the present disclosure. Figure 2 Only part of the structure of the lifting gantry crane is shown.

[0022] See also Figure 1 and Figure 2 The lifting gantry crane of the fully underground bogie intelligent replacement system based on screw nut transmission includes: Two track beams 1 are arranged in parallel, a bracket 11 is arranged on the track beam 1, a tractor 12 is arranged on the bracket 11, and the bracket 11 and the tractor 12 are used to carry the lifted object; The lifting assembly 2 comprises a support member, a lifting member and a first driving unit; the support member and the lifting member are used to support the track beam, the first support member and the lifting member are in transmission connection, and the first driving unit is used to drive the support member and the lifting member to move relative to each other, so as to drive the track beam to be lifted and lowered; both ends of the track beam are provided with lifting assemblies; A monitoring component 3, used for monitoring the inclination of the track beam 1; The control unit 4 is used to receive the inclination of the track beam monitored by the monitoring component, and when the inclination of the track beam exceeds an angle threshold, adjust the lifting speeds of the multiple lifting components to keep the track beam horizontal.

[0023] In an embodiment of the present disclosure, a lifting gantry crane for a fully underground intelligent bogie replacement system based on a screw-nut transmission is provided. The lifting gantry crane for a fully underground intelligent bogie replacement system based on a screw-nut transmission includes a track beam, a bracket and a tractor for carrying a train, a plurality of lifting components for raising and lowering the track beam, a monitoring component for monitoring the horizontality of the track beam, and a control unit for controlling the moving component.

[0024] By installing lifting components at both ends of the track beam and using brackets and tractors to carry the train, a larger maintenance space can be provided for the train. The track beam can be lifted and lowered smoothly through monitoring components and control units, ensuring the safety of the train during lifting and lowering.

[0025] In the disclosed embodiment, a first movable track 112 is provided on the side of the track beam 1 , and the bracket 11 can move along the first movable track 112 when driven by the second driving unit 111 .

[0026] In the disclosed embodiment, a movable bracket is provided, and the position of the bracket can be set according to the length of the train to match trains of different lengths.

[0027] In the disclosed embodiment, the bracket 11 is provided with a third driving unit 121 and a second moving track 122 , and the third driving unit 121 can drive the tractor 12 to move along the second moving track 122 to adjust the distance between the tractor 12 and the lifted object.

[0028] In the disclosed embodiment, a movable tractor is provided, and the position of the tractor can be set according to the width of the train to match trains of different widths.

[0029] In the embodiment of the present disclosure, the lifting member 22 is a screw, the first driving unit 23 is fixed on the support member 21, a screw positioning hole is provided on the support member 21, one end of the lifting member 22 is fixed on the ground, and the other end of the lifting member 22 passes through the screw positioning hole and is transmission-connected to the first driving unit 23.

[0030] In the embodiment of the present disclosure, by providing a lead screw positioning hole on the support member, the fixing effect between the lifting member and the support member can be ensured, thereby ensuring safety during the lifting process.

[0031] In the disclosed embodiment, the lifting member 22 is fixed on the ground by a lifting member fixing plate 221 to ensure the stability of the lifting member.

[0032] In the embodiment of the present disclosure, the first driving unit 23 includes a servo motor 231 and a worm gear reducer 232, the servo motor 231 is used to provide torque input to the worm gear reducer 232, the worm gear reducer 232 is used to adjust the direction and magnitude of the torque input by the servo motor 231, and provide torque output for the lifting member 22 to drive the lifting member 22 to rotate, and the lifting member 22 drives the support member 21 to be lifted and lowered by rotating.

[0033] In the disclosed embodiment, a servo motor and a worm reducer are provided to control the movement of the lifting member, thereby controlling the lifting and lowering of the fixing member.

[0034] In the disclosed embodiment, the servo motor is equipped with a corresponding electronic control system to realize motor starting, motor self-locking and status detection.

[0035] In the embodiment of the present disclosure, the monitoring component 3 includes an image acquisition unit 31 and an image processing unit 32. The image acquisition unit 31 is used to acquire images of the track beam 1 during the lifting process, and the image processing unit 32 is used to determine the inclination of the track beam 1 based on the images acquired by the image acquisition unit 31.

[0036] In the embodiment of the present disclosure, the inclination of the track beam is determined by acquiring an image of the track beam and processing the image.

[0037] In the embodiment of the present disclosure, the image acquisition unit 31 may be a high-definition camera unit to ensure the clarity of the acquired image.

[0038] In the disclosed embodiment, the image processing unit 32 is provided with an image processing algorithm. The image processing unit 32 obtains the image coordinates of the two ends of the track beam 1 in the track beam image and determines the inclination of the track beam 1 according to the image coordinates.

[0039] In the disclosed embodiment, the image processing algorithm can determine the inclination of the track beam based on the pixel coordinates in the image, thereby improving the judgment accuracy.

[0040] In the embodiment of the present disclosure, the monitoring component 3 also includes a pressure monitoring unit 33 and a height monitoring unit 34. The pressure monitoring unit 33 is used to monitor the pressure borne by the tractor 12. When the pressure borne by the tractor 12 reaches a warning threshold, an alarm signal is issued and the lifting component 2 is shut down; the height monitoring unit 34 is used to monitor the current height of the track beam 1.

[0041] In the disclosed embodiment, during the lifting process of the train, due to the different positions of the train, the pressures on the multiple support components may be different, which may cause the track beam to tilt. By monitoring the pressure on the tractor, it is avoided that the tractor is subjected to excessive pressure and causes the tractor to break, thereby ensuring the safety during the lifting process. The height monitoring unit can be set to monitor the height of the track beam in real time.

[0042] In the embodiment of the present disclosure, when the inclination of the track beam 1 does not meet the requirement, the control unit 4 adjusts the lifting speed of the plurality of lifting assemblies 2 to keep the track beam 1 horizontal, including: The control unit 4 determines the height difference between the two ends of the track beam 1 according to the inclination of the track beam 1; The control unit 4 determines the current height of the track beam 1; Determine the remaining lifting time required to reach a preset height according to the current lifting speed of the lifting assembly 2 and the current height of the track beam 1; The lifting speed of the lifting assembly 2 on the side of the track beam 1 with a lower height is determined based on the remaining lifting time and the height difference.

[0043] In the disclosed embodiment, adjusting the speed of the lifting assembly in the above manner can ensure that the track beam remains horizontal when reaching a preset height, thereby ensuring safety during the train maintenance process.

[0044] In the embodiment of the present disclosure, the angle threshold value ranges from 0 to 1°.

[0045] Exemplarily, the angle threshold may be 0.5°.

[0046] In the disclosed embodiment, the above angle threshold is adopted to ensure the safety of the train during lifting and lowering.

[0047] Of course, the above angle threshold is only an example, and other angle thresholds may also be used.

[0048] In the disclosed embodiment, when the train enters the operating area (enters the area between the track beams), the lifting gantry car lifting machine of the fully underground bogie intelligent replacement system based on the screw nut drive rises from the underground, and at the same time, the bracket drives the supporting head to rotate 90° and be arranged vertically with the track beam, and enters the working state. The bracket can realize horizontal movement on the track beam through the drive motor, and the supporting head can realize forward and backward movement driven by another drive motor, which can be suitable for the lifting work of different EMUs.

[0049] After the train enters the operating area, the four first drive units work simultaneously, the supporting member is lifted up under the drive of the lifting member, and the gantry crane rises from the ground.

[0050] During the lifting process, the tilt angles of the two gantry cranes are monitored in real time. When the tilt angle is greater than the angle threshold (for example, the angle threshold is 0 degrees), the control unit receives a signal and performs adaptive adjustment on the lifting components.

[0051] When the support member is lifted, the first drive unit is self-locked to prevent the track beam from sliding off.

[0052] After the gantry crane lifts the car body, the mechanical connection between the bogie and the car body is manually released, and the bogie is placed on the movable track bridge to carry out maintenance on the train.

[0053] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A lifting gantry crane for a fully underground bogie intelligent replacement system based on a screw nut transmission, characterized in that: include: Two track beams arranged in parallel, a bracket is arranged on the track beam, a tractor is arranged on the bracket, and the bracket and the tractor are used to carry the lifted object; A lifting assembly, comprising a support member, a lifting member and a first driving unit; The support member and the lifting member are used to support the track beam, the first support member and the lifting member are in transmission connection, and the first driving unit is used to drive the support member and the lifting member to move relative to each other, so as to drive the track beam to move up and down; both ends of the track beam are provided with lifting components; A monitoring component for monitoring the inclination of the track beam; The control unit is used to receive the inclination of the track beam monitored by the monitoring component, and when the inclination of the track beam exceeds an angle threshold, adjust the lifting speeds of multiple lifting components to keep the track beam horizontal.

2. The lifting gantry crane of the fully underground bogie intelligent replacement system based on screw nut transmission according to claim 1 is characterized in that: A first movable track is provided on the side surface of the track beam, and the bracket can move along the first movable track under the drive of the second driving unit.

3. The lifting gantry crane of the fully underground bogie intelligent replacement system based on screw nut transmission according to claim 1 is characterized in that: The bracket is provided with a third driving unit and a second moving track, and the third driving unit can drive the tractor to move along the second moving track to adjust the distance between the tractor and the lifted object.

4. The lifting gantry crane of the fully underground bogie intelligent replacement system based on screw nut transmission according to claim 1 is characterized in that: The lifting member is a screw, the first driving unit is fixed on a support member, a screw positioning hole is provided on the support member, one end of the lifting member is fixed on the ground, and the other end of the lifting member passes through the screw positioning hole and is transmission-connected to the first driving unit.

5. The lifting gantry crane of the fully underground bogie intelligent replacement system based on screw nut transmission according to claim 4 is characterized in that: The first driving unit includes a servo motor and a worm gear reducer. The servo motor is used to provide torque input to the worm gear reducer. The worm gear reducer is used to adjust the direction and size of the torque input by the servo motor and provide torque output for the lifting member to drive the lifting member to rotate. The lifting member drives the support member to lift and lower by rotating.

6. The lifting gantry crane of the fully underground bogie intelligent replacement system based on screw nut transmission according to claim 1 is characterized in that: The monitoring component includes an image acquisition unit and an image processing unit. The image acquisition unit is used to acquire images of the track beam during the lifting process. The image processing unit is used to determine the inclination of the track beam according to the images acquired by the image acquisition unit.

7. The lifting gantry crane of the fully underground bogie intelligent replacement system based on screw nut transmission according to claim 6 is characterized in that: The image processing unit is provided with an image processing algorithm. The image processing unit obtains the image coordinates of the two ends of the track beam in the track beam image and determines the inclination of the track beam according to the image coordinates.

8. The lifting gantry crane of the fully underground bogie intelligent replacement system based on screw nut transmission according to claim 6 is characterized in that: The monitoring component also includes a pressure monitoring unit and a height monitoring unit. The pressure monitoring unit is used to monitor the pressure borne by the tractor. When the pressure borne by the tractor reaches a warning threshold, an alarm signal is issued and the lifting component is shut down. The height monitoring unit is used to monitor the current height of the track beam.

9. The lifting gantry crane of the fully underground bogie intelligent replacement system based on screw nut transmission according to claim 8 is characterized in that: When the inclination of the track beam does not meet the requirement, the control unit adjusts the lifting speed of the plurality of lifting components to keep the track beam horizontal, including: The control unit determines the height difference between the two ends of the track beam according to the inclination of the track beam; The control unit determines the current height of the track beam; Determine the remaining lifting time required to reach a preset height based on the current lifting speed of the lifting assembly and the current height of the track beam; The lifting speed of the lifting assembly on the side of the track beam with a lower height is determined based on the remaining lifting time and the height difference.

10. The lifting gantry crane of the fully underground bogie intelligent replacement system based on screw nut transmission according to claim 1, characterized in that: The angle threshold value ranges from 0 to 1°.

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