Clamp for locomotive overhauling and hoisting

Abstract

The utility model relates to the technical field of hoisting clamps, in particular to a locomotive overhaul hoisting clamp which comprises a hollowed-out upper chuck, a hoisting arm, a pneumatic telescopic clamping rod, a lower chuck and an electric telescopic supporting arm. A lifting arm is arranged at the upper end of the hollowed-out upper chuck, a lower chuck is arranged at the center of the lower portion of the hollowed-out upper chuck, a pneumatic telescopic clamping rod is arranged between the hollowed-out upper chuck and the lower chuck, a clamping head is arranged at the lower end of the pneumatic telescopic clamping rod, and a clamping sleeve corresponding to the clamping head is arranged at the center of the upper end of the lower chuck. A plurality of sets of electric telescopic supporting arms used for supporting locomotive hubs are arranged at the outer end of the lower chuck in a surrounding mode. The hollow upper chuck and the lower chuck are matched with the pneumatic telescopic clamping rods for clamping from the center to the outside, and the electric telescopic supporting arms are used for assisting, so that the fixing effect on a tire and a hub is greatly improved, the situations that the chucks are loosened, and the tire and the hub shake and fall off are avoided even if vibration or impact occurs in the hoisting process, and the safety of the tire and the hub is improved. And safe maintenance work is effectively guaranteed.

Description

Technical Field

[0001] This application relates to the field of lifting fixture technology, and in particular to a lifting fixture for locomotive maintenance. Background Technology

[0002] Modern locomotives are typically equipped with advanced traction control systems, braking systems, and fault diagnosis devices, featuring high traction, high operating efficiency, and environmental friendliness and energy saving. To ensure locomotive safety, locomotives need to undergo regular maintenance at all levels, including daily inspections, maintenance of key components, and major overhauls, to ensure they are always in good technical condition. When inspecting locomotive tires and rims, clamps are usually used to hold and lift the tires and rims to conduct in-depth inspections of wear and cracks.

[0003] Traditional hoisting clamps typically clamp the outer parts of the locomotive wheel hub and tire during use. Since the tire and wheel hub are fixed by only external clamping force, the clamps are prone to loosening once subjected to large vibrations or impacts, which can easily cause the wheel hub and tire to shake or even fall off.

[0004] Therefore, in view of the defects of the traditional hoisting clamps mentioned above, a locomotive maintenance hoisting clamp can be designed. This application designs upper and lower clamping plates, in conjunction with pneumatic telescopic rods, to clamp from the center of the locomotive wheel hub and tire outward, thereby facilitating the solution of the above problems. Utility Model Content

[0005] In order to overcome the shortcomings of traditional hoisting clamps, which typically clamp the outer parts of the locomotive wheel hub and tire during use, relying solely on external clamping force to fix the tire and wheel hub, the clamps are prone to loosening once subjected to large vibrations or impacts, thus causing the wheel hub and tire to shake or even fall off. This application provides a hoisting clamp for locomotive maintenance.

[0006] The technical solution is as follows: A locomotive maintenance hoisting clamp includes a hollow upper clamping plate, a hoisting arm, a pneumatic telescopic clamping rod, a lower clamping plate, and an electric telescopic support arm; the upper end of the hollow upper clamping plate is provided with a hoisting arm for connecting hoisting equipment, the lower center of the hollow upper clamping plate is provided with a lower clamping plate for supporting the bottom of the locomotive wheel hub, a pneumatic telescopic clamping rod for retracting clamping is provided between the hollow upper clamping plate and the lower clamping plate, the lower end of the pneumatic telescopic clamping rod is provided with a snap connector, the upper center of the lower clamping plate is provided with a snap sleeve corresponding to the snap connector, and multiple sets of electric telescopic support arms for supporting the locomotive wheel hub are arranged around the outer end of the lower clamping plate.

[0007] Furthermore, the inner wall of the snap-fit ​​sleeve is provided with four sets of snap-fit ​​slots, and one side of each of the four sets of snap-fit ​​slots is provided with an anti-disengagement groove. The outer end of the snap-fit ​​connector is provided with four sets of snap-fit ​​blocks corresponding to the snap-fit ​​slots.

[0008] Furthermore, each of the four anti-detachment slots has a limiting hole through it near the top of the slot. The upper end of the snap-fit ​​sleeve is provided with a limiting ring that plays a limiting role, and the lower end of the limiting ring is surrounded by four limiting strips corresponding to the limiting holes.

[0009] Furthermore, a cylinder corresponding to the pneumatic telescopic clamping rod is provided at the center of the upper end of the hollow upper clamping plate, and the upper end of the pneumatic telescopic clamping rod passes through the hollow upper clamping plate and connects to the cylinder.

[0010] Furthermore, the upper surface of the lower clamp is surrounded by multiple sets of limiting top strips for limiting the wheel hub of the locomotive, and a battery compartment is opened at the center of the lower end of the lower clamp, with a battery pack connected to the electric telescopic support arm inside the battery compartment.

[0011] Furthermore, connecting seats are provided on both sides of the upper end of the hollow upper clamping plate. Connecting slots are provided inside the connecting seats, and a first-level mounting hole is provided through the side wall of the connecting slot.

[0012] Furthermore, the middle section of the lifting arm is symmetrically provided with two sets of lifting rings, and the interior of both sets of lifting rings is provided with lifting holes. The two ends of the lifting arm extend into the interior of the connecting groove, and the two ends of the lifting arm are provided with secondary mounting holes corresponding to the primary mounting holes.

[0013] The beneficial effect is that, compared with the defects of hoisting clamps, this application uses a hollow upper and lower clamping plate in conjunction with a pneumatic telescopic clamping rod to clamp from the center outwards, plus the assistance of an electric telescopic support arm, which greatly improves the fixing effect on tires and hubs. Even if vibration or impact occurs during hoisting, the clamps will not loosen, and the tires and hubs will not shake and fall off, effectively ensuring the safety of maintenance work. The limiting top bar ensures that the locomotive wheel hub is always in the correct position, making the detection of wear and cracks more accurate and avoiding misjudgments caused by positional deviations. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the locomotive maintenance and hoisting fixture of this application;

[0015] Figure 2 This is a three-dimensional structural diagram of the combination of the hollow upper clamping plate and the pneumatic telescopic clamping rod in this application;

[0016] Figure 3 This is a three-dimensional structural diagram of the combination of the lower clamping plate and the limiting top bar in this application;

[0017] Figure 4 This is a three-dimensional structural diagram of the combination of the lower clamping plate and the electric telescopic support arm in this application;

[0018] Figure 5 This is a three-dimensional structural diagram of the combination of the card sleeve and the limiting ring in this application;

[0019] Figure 6 This is a three-dimensional structural diagram of the lifting arm in this application.

[0020] Explanation of reference numerals in the attached diagram: 1. Hollowed-out upper clamping plate; 2. Lifting arm; 3. Pneumatic telescopic clamping rod; 4. Snap-fit ​​connector; 5. Snap-fit ​​sleeve; 6. Lower clamping plate; 7. Connecting seat; 8. Connecting groove; 9. Primary mounting hole; 10. Cylinder; 11. Locking block; 12. Limiting top bar; 13. Electric telescopic support arm; 14. Battery compartment; 15. Battery pack; 16. Slot; 17. Anti-detachment slot; 18. Limiting hole; 19. Limiting ring; 20. Limiting insert; 21. Lifting ring; 22. Lifting hole; 23. Secondary mounting hole. Detailed Implementation

[0021] The present application will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0022] Example 1

[0023] like Figures 1-6 As shown, a locomotive maintenance hoisting clamp includes a hollow upper clamping plate 1, a hoisting arm 2, a pneumatic telescopic clamping rod 3, a lower clamping plate 6, and an electric telescopic support arm 13. The upper end of the hollow upper clamping plate 1 is provided with a hoisting arm 2 for connecting hoisting equipment. The lower center of the hollow upper clamping plate 1 is provided with a lower clamping plate 6 for supporting the bottom of the locomotive wheel hub. A pneumatic telescopic clamping rod 3 for retracting clamping is provided between the hollow upper clamping plate 1 and the lower clamping plate 6. The lower end of the pneumatic telescopic clamping rod 3 is provided with a snap connector 4. The upper center of the lower clamping plate 6 is provided with a snap sleeve 5 corresponding to the snap connector 4. Multiple sets of electric telescopic support arms 13 for supporting the locomotive wheel hub are arranged around the outer end of the lower clamping plate 6.

[0024] The inner wall of the snap-fit ​​sleeve 5 is provided with four sets of snap-fit ​​grooves 16, and each of the four sets of snap-fit ​​grooves 16 has an anti-detachment groove 17 on one side. The outer end of the snap-fit ​​connector 4 is provided with four sets of snap-fit ​​blocks 11 corresponding to the snap-fit ​​grooves 16. Through the anti-detachment grooves 17 on one side of the snap-fit ​​grooves 16, the snap-fit ​​blocks 11 are rotated and snapped in to form an anti-detachment structure, which can effectively resist the external forces generated by vibration, shaking and other factors during hoisting and prevent the snap-fit ​​connector 4 from accidentally coming off.

[0025] Four sets of anti-detachment grooves 17 are all provided with limit holes 18 near the top of the slot 16. The upper end of the snap-fit ​​sleeve 5 is provided with a limit ring 19 that plays a limiting role. The lower end of the limit ring 19 is surrounded by four sets of limit inserts 20 corresponding to the limit holes 18. The limit holes 18 and the limit inserts 20 are matched and cooperated. After the snap-fit ​​connector 4 is installed in place, the limit inserts 20 are inserted, which further enhances the reliability of the connection between the snap-fit ​​connector 4 and the snap-fit ​​sleeve 5.

[0026] The upper center of the hollow upper clamping plate 1 is provided with a cylinder 10 corresponding to the pneumatic telescopic clamping rod 3. The upper end of the pneumatic telescopic clamping rod 3 passes through the hollow upper clamping plate 1 and is connected to the cylinder 10. By cooperating with the pneumatic telescopic clamping rod 3 through the cylinder 10, the extension and retraction of the pneumatic telescopic clamping rod 3 can be precisely and flexibly controlled by controlling the entry and exit of compressed air in the cylinder 10.

[0027] The upper surface of the lower clamping plate 6 is surrounded by multiple sets of limiting top strips 12 for limiting the position of the locomotive wheel hub. A battery compartment 14 is opened at the center of the lower end of the lower clamping plate 6. The battery compartment 14 contains a battery pack 15 connected to the electric telescopic support arm 13. By combining multiple sets of limiting top strips 12, the position of the wheel hub and tire can be limited when supporting the locomotive wheel hub and tire, preventing them from shifting during the inspection process.

[0028] The upper two sides of the hollow upper clamping plate 1 are provided with connecting seats 7. The connecting seats 7 have connecting grooves 8 inside. The side wall of the connecting grooves 8 has a first-level mounting hole 9. The connecting seats 7 and the connecting grooves 8 provide a precise positioning structure for the installation of the lifting arm 2.

[0029] Two sets of lifting rings 21 are symmetrically arranged in the middle section of the lifting arm 2. Lifting holes 22 are opened inside the two sets of lifting rings 21. The two ends of the lifting arm 2 extend into the interior of the connecting groove 8. The two ends of the lifting arm 2 are opened with secondary mounting holes 23 corresponding to the primary mounting holes 9. The symmetrical distribution of the two sets of lifting rings 21 ensures that the clamps are subjected to uniform force during the lifting process, which helps to smoothly lift the locomotive wheel hub and tire and reduce the possibility of swaying and tilting.

[0030] During operation, maintenance personnel first insert both ends of the lifting arm 2 into the connecting grooves 8 of the connecting seats 7 on both sides of the upper end of the hollow upper clamping plate 1, so that the secondary mounting hole 23 is aligned with the primary mounting hole 9, and then tighten the bolts to complete the connection between the lifting arm 2 and the hollow upper clamping plate 1.

[0031] Next, place the wheel hub and tire flat on the lower clamping plate 6. Then, start the cylinder 10 to push the pneumatic telescopic clamping rod 3 downward to extend it and push the clamping connector 4 into the clamping sleeve 5 to connect them. At the same time, the clamping block 11 is inserted into the clamping groove 16. Then, rotate the clamping connector 4 to make the clamping block 11 engage with the anti-disengagement groove 17. Then, insert the limiting strip 20 of the limiting ring 19 into the limiting hole 18 to ensure a stable connection.

[0032] Then, cylinder 10 is activated again, which pushes the pneumatic telescopic clamping rod 3 to retract, causing the lower clamping plate 6 to lift the wheel hub and tire and gradually retract to clamp them. At this time, the electric telescopic support arm 13 is activated, and the battery pack 15 supplies power to the electric telescopic support arm 13, which extends and supports the bottom edge of the locomotive wheel hub and tire. Finally, the lifting ring 21 on the lifting arm 2 is connected through the lifting equipment to lift the tire and wheel hub smoothly, and the wear and crack depth detection begins.

[0033] Its working principle is as follows: when the cylinder 10 is started, the compressed air drives the piston to move, which drives the pneumatic telescopic clamp rod 3 to extend and retract. The clamping connector 4 and the clamping sleeve 5 are initially connected through the cooperation of the clamping groove 16 and the clamping block 11. After the clamping connector 4 is rotated, the clamping block 11 enters the anti-disengagement groove 17, which, together with the limiting ring 19 and the limiting insert 20, prevents the clamping connector 4 from coming off. The electric telescopic support arm 13 is powered by the battery pack 15 in the battery compartment 14, which drives the support arm to extend or retract. The limiting top bar 12 on the lower clamping plate 6 uses its protruding structure to limit the locomotive wheel hub and prevent displacement during the support and inspection process.

[0034] Its beneficial effects are significant. Throughout the maintenance process, the clamp has demonstrated numerous advantages. In terms of stability, the hollow upper clamping plate 1 and lower clamping plate 6, together with the pneumatic telescopic clamping rod 3, clamp from the center outwards. With the assistance of the electric telescopic support arm 13, the fixing effect on the tire and wheel hub is greatly improved. Even if vibration or impact occurs during hoisting, the clamp will not loosen, and the tire and wheel hub will not shake or fall off, effectively ensuring the safety of the maintenance work. The limiting top bar 12 ensures that the locomotive wheel hub is always in the correct position, making the detection of wear and cracks more accurate and avoiding misjudgments caused by positional deviations. At the same time, the connection, installation and disassembly of the various components of the clamp are simple, greatly saving the operation time of maintenance personnel and improving the overall efficiency of the maintenance work.

Claims

1. A crane for locomotive repair, comprising a hollow upper chuck (1), characterized in that, Also include hoisting arm (2), pneumatic telescopic clamp rod (3), lower clamp (6) and electric telescopic support arm (13); The upper end of the upper clamp (1) is provided with a hoisting arm (2) for connecting the hoisting equipment, the lower center of the upper clamp (1) is provided with a lower clamp (6) for holding the bottom of the motorcycle hub, the upper clamp (1) and the lower clamp (6) are provided with a pneumatic telescopic clamp rod (3) for shrinking and clamping, the lower end of the pneumatic telescopic clamp rod (3) is provided with a clamping joint (4), the upper end center of the lower clamp (6) is provided with a clamping sleeve (5) corresponding to the clamping joint (4), and the outer end of the lower clamp (6) is provided with a plurality of electric telescopic support arms (13) for supporting the motorcycle hub.

2. The locomotive hoist clamp of claim 1, wherein, The inner wall of the clamping sleeve (5) is provided with four groups of clamping grooves (16), and the one side of the four groups of clamping grooves (16) is provided with a anti-drop groove (17), and the outer end of the clamping joint (4) is provided with four groups of clamping blocks (11) corresponding to the clamping grooves (16).

3. The locomotive hoist clamp of claim 2, wherein: The four groups of anti-drop grooves (17) are close to the top of the clamping groove (16) and are provided with a limiting hole (18), and the upper end of the clamping sleeve (5) is provided with a limiting ring (19) for limiting, and the lower end of the limiting ring (19) is provided with four groups of limiting insertion strips (20) corresponding to the limiting hole (18).

4. The locomotive hoist clamp of claim 1, wherein: The upper end center of the upper clamp (1) is provided with a pneumatic cylinder (10) corresponding to the pneumatic telescopic clamp rod (3), and the upper end of the pneumatic telescopic clamp rod (3) passes through the upper clamp (1) and is connected with the pneumatic cylinder (10).

5. The locomotive hoist clamp of claim 1, wherein: The upper end surface of the lower clamp (6) is provided with a plurality of limiting top strips (12) corresponding to the motorcycle hub, and the lower end center of the lower clamp (6) is provided with a battery compartment (14), and the inside of the battery compartment (14) is provided with a battery pack (15) connected with the electric telescopic support arm (13).

6. The locomotive hoist clamp of claim 1, wherein, The upper end of the upper clamp (1) is provided with a connecting seat (7), and the inside of the connecting seat (7) is provided with a connecting groove (8), and the side wall of the connecting groove (8) is provided with a primary mounting hole (9).

7. The locomotive hoist clamp of claim 6, wherein, The middle section of the hoisting arm (2) is provided with two groups of hoisting rings (21), and the inside of the two groups of hoisting rings (21) is provided with a hoisting hole (22), and the two ends of the hoisting arm (2) extend into the inside of the connecting groove (8), and the two ends of the hoisting arm (2) are provided with a secondary mounting hole (23) corresponding to the primary mounting hole (9).

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