Portable electric pull ring round pin disassembling tool

Abstract

The utility model discloses a portable electric pull ring round pin disassembling tool, belongs to the technical field of round pin disassembling, and solves the technical problem of low efficiency of disassembling a fixed round pin on a derail pull ring at present. The clamping sleeve of the U-shaped structure is used for being connected to the truck top beam in a buckled mode, a hydraulic oil cylinder is arranged at one end of the clamping sleeve, and a positioning groove used for being connected to the periphery of a round pin installation portion of the truck top beam in a sleeved mode is formed in the top of the clamping sleeve. A piston rod of the hydraulic oil cylinder is aligned with a round pin hole of the round pin mounting part; the hydraulic oil cylinder is connected with a micro hydraulic station through an oil pipe; the storage battery is electrically connected with the micro hydraulic station through the tripping switch and the relay in sequence, and the tripping switch is electrically connected with the control end of the relay through the reversing switch. The fixing round pin is directly ejected out through the hydraulic oil cylinder, efficiency is high, operation is easy, convenient and safe, and carrying is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of round pin disassembly, and more specifically, to a portable electric pull ring round pin disassembly tool. Background Art

[0002] 70t-class railway freight vehicles are currently commonly used railway freight vehicles in my country. In order to prevent secondary accidents of 70t-class railway freight vehicles after derailment accidents, 70t-class railway freight vehicles are equipped with derailment automatic braking devices, namely derailment pull rings. There is a derailment pull ring B on each pair of wheels A, which is connected to the round pin mounting part E of the freight car top beam D through a 10mm round pin C, and the round pin C is fixed by a fixing pin F. According to the current "Railway Freight Car Section Repair Regulations" (Railway Freight Car

[2021] No. 34), before each vehicle repair of the 70t-class railway freight car, the round pin must be removed and the derailment pull ring must be separated from the freight car top beam.

[0003] At present, there is no special tool for removing the round pin between the pull ring and the top beam of the 70t railway freight car derailment automatic brake device. Instead, acetylene flame cutting is used to remove it, that is, the end of the round pin C connected to the fixed pin E is cut off. Using acetylene flame cutting has the following problems:

[0004] 1. Low efficiency and difficult operation.

[0005] When using acetylene for cutting, it is necessary to bring oxygen and acetylene tanks, connect various pipelines, and take various safety precautions. Ignition cutting also takes a long time, the process is cumbersome, and the operation efficiency is low. When using acetylene for cutting, due to the limited space of the work site, the operator needs to squat and carry the acetylene gun to cut, which is inconvenient.

[0006] Second, it is easy to damage the equipment and waste costs.

[0007] When operators use acetylene and oxygen to cut the derailment ring pins, if they are not careful, the high temperature flame will cut the top beam, which will lead to the replacement of the top beam. According to the actual situation on site, the use of acetylene cutting will cause about 20% of the top beams to be damaged. Each top beam costs 70 yuan, and there are 4 per vehicle, which results in huge annual costs.

[0008] 3. There is a fire hazard.

[0009] Acetylene oxygen cutting uses open flames, and the combustion temperature of acetylene is very high. There are combustibles such as wood and lubricating oil at the vehicle maintenance site, which poses a certain fire hazard and must be used with caution. Utility Model Content

[0010] The technical problem to be solved by the utility model is aimed at the above-mentioned deficiencies in the prior art, and the purpose of the utility model is to provide a portable electric pull ring and round pin disassembly tool.

[0011] The technical solution of the utility model is: a portable electric pull-ring round pin disassembly tool, comprising a U-shaped ferrule, one end of the ferrule is provided with a hydraulic cylinder for ejecting the round pin, the top of the ferrule is provided with a positioning groove for locating the position of the round pin, and the hydraulic cylinder is connected to a micro hydraulic station through an oil pipe.

[0012] As a further improvement, a mounting seat for mounting the hydraulic cylinder is provided at one end of the ferrule.

[0013] Furthermore, the mounting seat is provided with a through hole aligned with the piston rod of the hydraulic cylinder.

[0014] Furthermore, the other end of the ferrule is provided with a round pin clearance groove aligned with the piston rod of the hydraulic cylinder.

[0015] Furthermore, the ferrule is made of 45# steel.

[0016] Furthermore, the ferrule is electroplated or quenched.

[0017] Furthermore, it also includes a control circuit, which includes a battery, a trip switch, a relay, and a reversing switch. The battery is electrically connected to the micro hydraulic station through the trip switch and the relay in sequence, and the trip switch is electrically connected to the control end of the relay through the reversing switch.

[0018] Furthermore, it also includes a protective box for installing the battery, trip switch, relay, and micro hydraulic station.

[0019] Furthermore, the storage battery is a rechargeable lithium battery pack, the trip switch is an air trip switch, and the relay is a solid-state relay.

[0020] Furthermore, it also includes a trolley for carrying the protective box.

[0021] Beneficial Effects

[0022] Compared with the prior art, the utility model has the following advantages:

[0023] When the ferrule is buckled on the top beam of the truck and the positioning groove is sleeved on the round pin mounting portion in the utility model, the piston rod of the hydraulic cylinder is aligned with the round pin hole of the round pin mounting portion. At this time, the micro hydraulic station is controlled to work, and the fixed round pin is directly ejected through the hydraulic cylinder, which has high efficiency, simple, convenient and safe operation, and the utility model is easy to carry. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the structure of the ferrule and the hydraulic cylinder in the utility model;

[0025] Figure 2 This is a schematic diagram of the main structure of the ferrule in the utility model;

[0026] Figure 3 It is a left-side structural schematic diagram of the ferrule in the utility model;

[0027] Figure 4 It is a schematic diagram of the top view of the ferrule in the utility model;

[0028] Figure 5 It is a three-dimensional structural schematic diagram of the ferrule in the utility model;

[0029] Figure 6 This is a control circuit diagram of the utility model.

[0030] Among them: 2-card sleeve, 3-hydraulic cylinder, 5-positioning groove, 6-piston rod, 9-mounting seat, 10-through hole, 11-round pin clearance groove, 12-battery, 13-trip switch, 14-relay, 15-reversing switch. DETAILED DESCRIPTION

[0031] The present invention will be further described below with reference to the specific embodiments in the accompanying drawings.

[0032] See also Figure 1 to Figure 6 A portable electric pull ring round pin disassembly tool includes a U-shaped ferrule 2, which is used to be buckled on the top beam of a truck to accurately locate the position of the target round pin, and at the same time, it is also necessary to transmit the pressure of ejecting the round pin. The width of the ferrule 2 is adapted to the width of the truck top beam, that is, when the ferrule 2 is buckled on the truck top beam, it is guaranteed to be able to smoothly clamp the truck top beam, but it cannot be too loose, otherwise displacement will occur when the round pin is ejected, and the ejection round pin cannot be accurately positioned. A hydraulic cylinder 3 for ejecting the round pin is provided at one end of the ferrule 2, and a positioning groove 5 for locating the position of the round pin is provided at the top of the ferrule 2. The positioning groove 5 is used to be sleeved on the periphery of the round pin mounting part. When the ferrule 2 is buckled on the truck top beam and the positioning groove 5 is sleeved on the round pin mounting part, the piston rod 6 of the hydraulic cylinder 3 is aligned with the round pin hole of the round pin mounting part. The hydraulic cylinder 3 is connected to a micro hydraulic station through an oil pipe. To control the operation of the micro hydraulic station, there is no need to remove the fixing pin. The round pin can be directly ejected through the hydraulic cylinder 3. The fixing pin will be broken or deformed during the ejection process, but the round pin installation part will not be damaged. The operation is simple, convenient and safe, and the utility model is easy to carry.

[0033] Specifically, one end of the ferrule 2 is provided with a mounting seat 9 for mounting the hydraulic oil cylinder 3, the mounting seat 9 is provided with a through hole 10 aligned with the piston rod 6 of the hydraulic oil cylinder 3, and the other end of the ferrule 2 is provided with a round pin clearance groove 11 aligned with the piston rod 6 of the hydraulic oil cylinder 3. In the process of directly ejecting the round pin, the piston rod 6 passes through the through hole 10 and extends into the round pin hole of the round pin mounting part, and the round pin is ejected from the round pin clearance groove 11.

[0034] Preferably, the ferrule 2 is made of 45# steel, and the ferrule 2 is also electroplated or quenched to prevent the metal ferrule from rusting and to further improve the strength of the metal ferrule.

[0035] The utility model also includes a control circuit, which includes a battery 12, a trip switch 13, a relay 14, and a reversing switch 15. The battery 12 is electrically connected to the micro hydraulic station through the trip switch 13 and the relay 14 in sequence, and the trip switch 13 is electrically connected to the control end of the relay 14 through the reversing switch 15. The reversing switch 15 controls the micro hydraulic station 8 to rotate forward and reverse, so as to extend or retract the piston rod 6 of the hydraulic cylinder 3.

[0036] Preferably, the storage battery 12 is a 24V rechargeable lithium battery pack, the trip switch 13 is an air trip switch, and the relay 14 is a solid-state relay. The DC motor working circuit is disconnected and connected by the contactless solid-state relay, and the manual reversing switch 15 only gives a control signal, and the contacts basically do not generate arcs, which can greatly extend the service life of the control circuit.

[0037] The model of the hydraulic cylinder 3 is SD25, and the micro hydraulic station is a micro hydraulic station using a 24V DC power supply, with a maximum power of 300W and a maximum hydraulic pressure of 15Mpa.

[0038] Because the working site environment is relatively bad and dusty, in order to protect the micro hydraulic station, power supply device and other components, as a further improvement, the utility model also includes a protective box for installing the battery 12, the trip switch 13, the relay 14, and the micro hydraulic station 8.

[0039] Furthermore, the utility model also includes a trolley for carrying the protective box, and during actual work, the trolley can be conveniently pulled under the train.

[0040] The above are only preferred implementations of the utility model. It should be pointed out that for those skilled in the art, several modifications and improvements can be made without departing from the structure of the utility model, which will not affect the effect of the implementation of the utility model and the practicality of the patent.

Claims

1. A portable electric pull ring and round pin disassembly tool, characterized in that: It comprises a U-shaped ferrule (2), one end of the ferrule (2) is provided with a hydraulic cylinder (3) for ejecting a round pin, the top of the ferrule (2) is provided with a positioning groove (5) for locating the position of the round pin, and the hydraulic cylinder (3) is connected to a micro hydraulic station via an oil pipe.

2. A portable electric pull ring and round pin disassembly tool according to claim 1, characterized in that: One end of the ferrule (2) is provided with a mounting seat (9) for mounting the hydraulic cylinder (3).

3. A portable electric pull ring and round pin disassembly tool according to claim 2, characterized in that: The mounting seat (9) is provided with a through hole (10) aligned with the piston rod (6) of the hydraulic cylinder (3).

4. A portable electric pull ring and round pin disassembly tool according to claim 3, characterized in that: The other end of the ferrule (2) is provided with a round pin clearance groove (11) aligned with the piston rod (6) of the hydraulic cylinder (3).

5. A portable electric pull ring and round pin disassembly tool according to claim 1, characterized in that: The ferrule (2) is made of 45# steel.

6. A portable electric pull ring and round pin disassembly tool according to claim 5, characterized in that: The ferrule (2) is also subjected to electroplating or quenching treatment.

7. A portable electric pull ring and round pin disassembly tool according to any one of claims 1 to 6, characterized in that: The invention also comprises a control circuit, wherein the control circuit comprises a storage battery (12), a trip switch (13), a relay (14), and a reversing switch (15); the storage battery (12) is electrically connected to the micro hydraulic station via the trip switch (13) and the relay (14) in sequence; and the trip switch (13) is electrically connected to the control end of the relay (14) via the reversing switch (15).

8. A portable electric pull ring and round pin disassembly tool according to claim 7, characterized in that: It also includes a protective box for installing the storage battery (12), the trip switch (13), the relay (14), and the micro hydraulic station.

9. The portable electric pull ring and round pin disassembly tool according to claim 7, characterized in that: The storage battery (12) is a rechargeable lithium battery pack, the trip switch (13) is an air trip switch, and the relay (14) is a solid-state relay.

10. The portable electric pull ring and round pin disassembly tool according to claim 8, characterized in that: Also included is a trolley for carrying the protective box.

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