Hydraulic frame shifting device

Abstract

The utility model relates to a kind of hydraulic frame vehicle device, involve train maintenance technical field.The hydraulic frame vehicle device includes multiple lifting mechanisms, lifting mechanism includes travelling trolley and is set on travelling trolley operating panel, hydraulic assembly and control component, hydraulic assembly includes hydraulic cylinder, control component includes controller, pressure sensor and displacement sensor, pressure sensor is used to monitor the pressure of hydraulic oil, displacement sensor is used to monitor the displacement of hydraulic cylinder, pressure sensor and displacement sensor are connected with controller.Lifting mechanism that can be flexibly moved is used to replace fixed, large-volume operation platform to carry out lifting operation to locomotive by the cooperative work of multiple, can be more convenient, low-costly to carry out the maintenance of locomotive.Each lifting mechanism uses the information collected by pressure sensor and displacement sensor, so that the hydraulic cylinder on each lifting mechanism acts synchronously, ensure the stability of locomotive lifting and descending process, improve the safety of operation.

Description

Technical Field

[0001] This utility model relates to the field of train maintenance technology, and in particular to a hydraulic vehicle lifting device. Background Technology

[0002] After a period of use, railway locomotives undergo routine inspections and maintenance to ensure safe operation. These inspections typically employ preventative periodic maintenance, parts replacement, and specialized, centralized repair of major components. To facilitate undercarriage inspections, the locomotive needs to be raised to provide sufficient space for maintenance personnel.

[0003] Chinese patent CN118990423B discloses a railway locomotive and rolling stock maintenance platform, including a steel frame base and a support platform mounted on the steel frame base. A track is mounted on the support platform, and a locomotive is mounted on the track. Locking components are arrayed on the support platform, and a work compartment is mounted on the steel frame base. However, the aforementioned platform has a complex structure, large size and weight, and high manufacturing and operating costs. Utility Model Content

[0004] This utility model provides a hydraulic vehicle lifting device, which includes multiple lifting mechanisms that can work together to stably lift the vehicle. It is compact in size, can be flexibly deployed, and is easy to use.

[0005] This utility model provides a hydraulic vehicle lifting device, including multiple lifting mechanisms. Each lifting mechanism includes a traveling trolley and an operation panel, hydraulic components, and control components mounted on the traveling trolley. The hydraulic components include hydraulic cylinders, and the control components include a controller, a pressure sensor, and a displacement sensor. The pressure sensor is used to monitor the pressure of the hydraulic oil, and the displacement sensor is used to monitor the displacement of the hydraulic cylinder. Both the pressure sensor and the displacement sensor are connected to the controller.

[0006] In one embodiment, the traveling trolley is further provided with a reset assembly, which includes a limit frame, a tension spring and a base plate. The hydraulic cylinder is slidably disposed in the limit frame, the base plate is disposed at the bottom of the hydraulic cylinder, and the two ends of the tension spring are respectively connected to the limit frame and the base plate.

[0007] In one embodiment, multiple tension springs are provided, and the multiple tension springs are arranged at equal intervals and parallel to each other around the outer wall of the hydraulic cylinder.

[0008] In one embodiment, a positioning groove is provided in the middle of the base plate, and the bottom of the hydraulic cylinder is inserted into the positioning groove.

[0009] In one embodiment, the base plate is provided with an anti-slip pad on the side opposite to the hydraulic cylinder.

[0010] In one embodiment, the hydraulic assembly further includes a hydraulic pump and hydraulic lines, both of which are connected to the hydraulic lines.

[0011] In one embodiment, the hydraulic assembly further includes a hydraulic lock disposed on the hydraulic line.

[0012] In one embodiment, the trolley is further equipped with a drive motor and a drive battery, the drive battery being connected to the drive motor, and the drive motor being connected to the hydraulic pump.

[0013] In one embodiment, the traveling trolley is further provided with a steering assembly, which is connected to the wheels of the traveling trolley.

[0014] In one embodiment, the operation panel is equipped with a power switch, a control panel, and an emergency stop button.

[0015] Compared with existing technologies, the advantages of this invention lie in its use of multiple flexibly movable lifting mechanisms working in tandem to replace a fixed, large-volume work platform for locomotive lifting operations, enabling more convenient and cost-effective locomotive maintenance. Each lifting mechanism is equipped with a control component; using information collected by pressure and displacement sensors, the hydraulic cylinders on each lifting mechanism can operate synchronously, ensuring smooth lifting and lowering of the locomotive and improving operational safety. Attached Figure Description

[0016] The present invention will be described in more detail below based on embodiments and with reference to the accompanying drawings.

[0017] Figure 1 This is a perspective view of the lifting mechanism in an embodiment of this utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the reset component in an embodiment of this utility model;

[0019] Figure 3 This is a schematic diagram of the hydraulic components in an embodiment of this utility model;

[0020] Figure 4 This is a schematic diagram of the control component in an embodiment of this utility model.

[0021] Figure label:

[0022] 1. Lifting mechanism; 11. Traveling trolley; 12. Control panel; 121. Power switch; 122. Control panel; 123. Emergency stop button; 13. Hydraulic components; 131. Hydraulic cylinder; 132. Hydraulic pump; 133. Hydraulic pipeline; 134. Hydraulic lock; 14. Control components; 141. Controller; 142. Pressure sensor; 143. Displacement sensor; 15. Reset components; 151. Limit frame; 152. Tension spring; 153. Base plate; 154. Anti-slip mat; 16. Drive battery; 17. Drive motor; 18. Steering components. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings.

[0024] like Figure 1 As shown, a hydraulic vehicle lifting device according to an embodiment of the present invention includes multiple lifting mechanisms 1. Each lifting mechanism 1 includes a traveling trolley 11 and an operation panel 12, a hydraulic component 13, and a control component 14 disposed on the traveling trolley 11. The hydraulic component 13 includes a hydraulic cylinder 131. The control component 14 includes a controller 141, a pressure sensor 142, and a displacement sensor 143. The pressure sensor 142 is used to monitor the pressure of the hydraulic oil, and the displacement sensor 143 is used to monitor the displacement of the hydraulic cylinder 131. Both the pressure sensor 142 and the displacement sensor 143 are connected to the controller 141.

[0025] This embodiment of the hydraulic locomotive lifting device utilizes multiple flexibly movable lifting mechanisms 1 working collaboratively to replace a fixed, large-volume work platform for locomotive lifting operations, enabling more convenient and cost-effective locomotive maintenance. Since each lifting mechanism 1 is independent, they must be synchronized in raising and lowering to ensure operational safety. In this embodiment, each lifting mechanism 1 is equipped with a control component 14. Using information collected by pressure sensors 142 and displacement sensors 143, the controller 141 monitors the stroke and lifting speed of each hydraulic cylinder 131, ensuring that the hydraulic cylinders 131 on each lifting mechanism 1 operate synchronously according to set parameters, guaranteeing smooth locomotive lifting and lowering processes, and improving operational safety.

[0026] like Figure 2As shown, the traveling trolley 11 is also equipped with a reset assembly 15, which includes a limit frame 151, a tension spring 152, and a base plate 153. A hydraulic cylinder 131 is slidably disposed within the limit frame 151, and the base plate 153 is disposed at the bottom of the hydraulic cylinder 131. The two ends of the tension spring 152 are connected to the limit frame 151 and the base plate 153, respectively. To facilitate movement, the traveling trolley 11 is equipped with wheels. However, during lifting operations, if the wheels are still used for support, the traveling trolley 11 is prone to displacement, and the wheels cannot provide sufficient support. Therefore, the hydraulic cylinder 131 needs to be in contact with the ground for safe lifting operations. When not performing lifting operations, the tension of the tension spring 152 keeps the base plate 153 at a certain distance from the ground, preventing obstruction to the movement of the traveling trolley 11. During the lifting operation, when the top of the hydraulic cylinder 131 contacts the vehicle body, the reaction force of the vehicle body on the hydraulic cylinder 131 causes the hydraulic cylinder 131 to move downward in the limit frame 151. The base plate 153 also descends and eventually contacts the ground, thus providing stable and reliable support for the hydraulic cylinder 131. The hydraulic cylinder 131 can then lift the vehicle body to the predetermined height.

[0027] In this embodiment, the limiting frame 151 is tubular, and the outer wall of the hydraulic cylinder 131 is slidably connected to the inner wall of the limiting frame 151, so that the hydraulic cylinder 131 can only move in the vertical direction.

[0028] Furthermore, multiple tension springs 152 are provided, and the multiple tension springs 152 are arranged at equal intervals and parallel to each other around the outer wall of the hydraulic cylinder 131, so that the circumference of the base plate 153 is uniformly stretched, so that the base plate 153 always remains horizontal, and the supporting force of the base plate 153 on the hydraulic cylinder 131 always remains vertical, ensuring the stability of the hydraulic cylinder 131.

[0029] In this embodiment, a positioning groove is provided in the middle of the base plate 153, and the bottom of the hydraulic cylinder 131 is inserted into the positioning groove. By providing the positioning groove, horizontal displacement between the hydraulic cylinder 131 and the base plate 153 can be effectively avoided, thereby ensuring that the hydraulic cylinder 131 always maintains a vertical posture and improving the stability of the hydraulic cylinder 131.

[0030] like Figure 2 As shown, an anti-slip pad 154 is provided on the side of the base plate 153 opposite to the hydraulic cylinder 131. To ensure sufficient structural strength and prevent deformation under high pressure, the base plate 153 is made of a metal alloy with high hardness. The anti-slip pad 154 is made of a material with a certain degree of elasticity, allowing for some deformation. By providing the anti-slip pad 154 at the bottom of the base plate 153, the bottom of the reset assembly 15 can be in full contact with the ground, preventing excessive local pressure and thus protecting the ground. Furthermore, the anti-slip pad 154 increases the friction between the reset assembly 15 and the ground, preventing relative displacement between the bottom of the reset assembly 15 and the ground, and improving operational safety.

[0031] like Figure 1 and Figure 3 As shown, the hydraulic assembly 13 also includes a hydraulic pump 132 and a hydraulic pipeline 133, with both the hydraulic pump 132 and the hydraulic cylinder 131 connected to the hydraulic pipeline 133. Each lifting mechanism 1 is equipped with its own hydraulic pump 132 and hydraulic pipeline 133, thus allowing it to move freely without being restricted by pipelines. It can flexibly select the lifting position and quantity according to operational needs, meeting the maintenance requirements of various locomotives.

[0032] The hydraulic assembly 13 also includes a hydraulic lock 134, which is mounted on the hydraulic line 133. The hydraulic lock 134 locks when the hydraulic cylinder 131 reaches a predetermined position, preventing the hydraulic cylinder 131 from descending during maintenance operations and ensuring the stability of the lifting vehicle and the safety of the maintenance operation.

[0033] like Figure 1 and Figure 3 As shown, the traveling trolley 11 is also equipped with a drive motor 17 and a drive battery 16. The drive battery 16 is connected to the drive motor 17, and the drive motor 17 is connected to the hydraulic pump 132. The traveling trolley 11 is self-powered and can move freely without external power supply. The drive battery 16 is a rechargeable battery, which can provide power not only to the traveling trolley 11 but also to the hydraulic pump 132. When the lifting operation is performed, the traveling trolley 11 is stationary, and the power of the drive motor 17 is used entirely to drive the hydraulic pump 132, enabling the hydraulic assembly 13 to lift a large weight. Conversely, when the lifting operation stops, the power of the drive motor 17 is used entirely to drive the traveling trolley 11 to move, allowing the traveling trolley 11 to quickly reach the lifting position.

[0034] like Figure 1 As shown, the traveling trolley 11 is also equipped with a steering assembly 18, which is connected to the wheels of the traveling trolley 11. Maintenance personnel can operate the steering assembly 18 on the traveling trolley 11 to control its movement trajectory, enabling the traveling trolley 11 to accurately reach the work position. The structure and principle of the steering assembly 18 are similar to the steering mechanism in an automobile, and will not be described in detail here. The hydraulic pump 132 provides steering assistance to the steering assembly 18, thereby reducing the labor intensity of maintenance personnel.

[0035] like Figure 1 As shown, the operation panel 12 is equipped with a power switch 121, a control panel 122, and an emergency stop button 123. The control panel 122 is a touch screen, which can conveniently control the lifting mechanism 1. In the event of an accident or emergency, pressing the emergency stop button 123 can stop the operation of the lifting mechanism 1 and ensure operational safety.

[0036] like Figure 3 and Figure 4As shown, the controller 141 in this embodiment is a PLC. Both the pressure sensor 142 and the displacement sensor 143 are connected to the controller 141. If the data fed back by the pressure sensor 142 and the displacement sensor 143 shows that the hydraulic cylinder 131 needs to be adjusted, the controller 141 can issue corresponding instructions to control the corresponding actuator to adjust the hydraulic cylinder 131 and ensure that each hydraulic cylinder 131 can lift and lower synchronously.

[0037] Although the present invention has been described with reference to preferred embodiments, various modifications can be made thereto and components can be replaced with equivalents without departing from the scope of the invention. In particular, the technical features mentioned in the various embodiments can be combined in any manner, provided there is no structural conflict. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A hydraulic vehicle-lifting device, characterized in that, The device includes multiple lifting mechanisms, each including a traveling trolley and an operation panel, hydraulic components, and control components mounted on the traveling trolley. The hydraulic components include hydraulic cylinders, and the control components include a controller, a pressure sensor, and a displacement sensor. The pressure sensor monitors the pressure of the hydraulic oil, and the displacement sensor monitors the displacement of the hydraulic cylinder. Both the pressure sensor and the displacement sensor are connected to the controller.

2. The hydraulic vehicle-lifting device according to claim 1, characterized in that, The trolley is also equipped with a reset assembly, which includes a limit frame, a tension spring, and a base plate. The hydraulic cylinder is slidably disposed in the limit frame, and the base plate is disposed at the bottom of the hydraulic cylinder. The two ends of the tension spring are respectively connected to the limit frame and the base plate.

3. The hydraulic vehicle-lifting device according to claim 2, characterized in that, The hydraulic cylinder is provided with multiple tension springs, which are arranged at equal intervals and parallel to each other around the outer wall of the hydraulic cylinder.

4. The hydraulic vehicle-lifting device according to claim 2, characterized in that, A positioning groove is provided in the middle of the base plate, and the bottom of the hydraulic cylinder is inserted into the positioning groove.

5. The hydraulic vehicle-lifting device according to claim 2, characterized in that, The base plate is provided with an anti-slip pad on the side opposite to the hydraulic cylinder.

6. The hydraulic vehicle-lifting device according to claim 1, characterized in that, The hydraulic assembly also includes a hydraulic pump and hydraulic lines, both of which are connected to the hydraulic lines.

7. The hydraulic vehicle-lifting device according to claim 6, characterized in that, The hydraulic assembly also includes a hydraulic lock, which is disposed on the hydraulic pipeline.

8. The hydraulic vehicle-lifting device according to claim 6, characterized in that, The trolley is also equipped with a drive motor and a drive battery. The drive battery is connected to the drive motor, and the drive motor is connected to the hydraulic pump.

9. The hydraulic vehicle-lifting device according to claim 8, characterized in that, The trolley is also equipped with a steering component, which is connected to the wheels of the trolley.

10. The hydraulic vehicle-lifting device according to claim 1, characterized in that, The operation panel is equipped with a power switch, a control panel, and an emergency stop button.

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