Universal large-diameter pipe locking, disassembling and assembling tool

Abstract

The utility model relates to the field of railway wagon vehicle maintenance, in particular to a universal large-diameter pipe locking and disassembling tool which comprises a special hoop for a bevel cock nut and a bevel cock auxiliary pipe locking sleeve. The hoop special for the angle cock nut comprises a hoop pipe body, a connector is arranged at the rear end of the hoop pipe body, and a round clamping head is arranged at the front end of the hoop pipe body. The angle cock auxiliary pipe locking sleeve comprises a sleeve outer hoop, a sleeve inner tightening piece and a sleeve body. External threads are arranged at the front end of the cylinder to form a circular-truncated-cone-shaped threaded cylinder section, a connector is designed at the rear end of the cylinder, and internal threads are arranged on an outer hoop of the sleeve; the sleeve internal tightening piece comprises a circular-truncated-cone-shaped pipe fitting, and an expansion joint is arranged on a pipe body of the sleeve internal tightening piece. The angle cock auxiliary pipe is sleeved with the angle cock auxiliary pipe locking sleeve, so that the problem that a pipe wrench wrench is extremely prone to falling off in the component disassembling and assembling process is solved, the personal potential safety hazard risk is reduced, meanwhile, the working efficiency is improved, and the working time length is shortened.

Description

Technical Field

[0001] The utility model relates to the field of railway freight car maintenance and general aviation equipment maintenance, in particular to the locking and disassembling of general large-diameter pipes, and specifically to a general large-diameter pipe locking and disassembling tool. Background Art

[0002] Railway freight cars are equipped with air brake angle plugs at the end of the car, which are responsible for controlling the air in and out of the entire vehicle brake main pipe. The angle plugs are usually ball core straight end plugs, which are mainly composed of plug body 1, sealing seat 2, ball core 3, core shaft 4, gasket 5, sealing ring 6, sealing pad 7, cover 8, sleeve 9, handle 10, locking nut 11, clamping ring 12 and pressing ring 13. Figure 1 As shown. The main function of the angle plug is to connect the brake main pipe and the braided brake hose assembly, so that the truck brake main pipe is connected or disconnected with the braided brake hose assembly. The angle plug is connected to the vehicle brake main pipe by an auxiliary pipe, one end of which has an external thread. When connected, one end of the auxiliary pipe is first threadedly connected to the angle plug, and then locked by a locking nut 11.

[0003] Daily civilian disassembly and assembly of large-size pipe locks, such as large-diameter steel pipes with a diameter of more than 4CM, requires the use of traditional pipe clamp wrenches, and the disassembly and assembly process is time-consuming and laborious. The auxiliary pipe of the angle plug door is a component that is commonly used in the current railway freight vehicles of the National Railway to connect the angle plug door and the brake main pipe. Its disassembly and assembly consists of two processes: pipe disassembly and assembly and locking nut disassembly and assembly. Since the cross-sectional diameter of the auxiliary pipe is 4.3CM, it is a large-diameter pipe, so it also needs to be forcibly disassembled and tightened with a traditional pipe clamp wrench. However, the force is uneven during the disassembly and assembly process, which can easily cause damage to the pipe fittings. The pipe clamp wrench is very easy to fall off, causing personal safety hazards, and the pipe clamp needs to be used repeatedly for small-angle rotation operations, which is time-consuming and labor-intensive, greatly affecting production efficiency. Summary of the invention

[0004] The utility model provides a universal large-diameter pipe locking and disassembly tool to solve the problems of time-consuming, labor-intensive, personal safety hazards and easy damage to pipe fittings during the strong disassembly and tight installation of the angle plug auxiliary pipe by traditional pipe clamp wrenches.

[0005] The utility model is realized by adopting the following technical scheme: a universal large-diameter pipe locking and disassembling tool, comprising a special sleeve hoop for a nut of a folded angle plug door and a folded angle plug door auxiliary pipe locking sleeve.

[0006] The special ferrule for the angle plug nut comprises a ferrule tube body, a connector connected to an electric wrench is arranged at the rear end of the ferrule tube body, and a circular clamp is arranged at the front end of the ferrule tube body.

[0007] The angle plug auxiliary pipe locking sleeve comprises a sleeve outer hoop, a sleeve internal clamp and a barrel; an external thread is provided at the front end of the barrel to form a threaded barrel section, the inner cross-sectional area at the entrance of the threaded barrel section is larger than the inner cross-sectional area at the tail of the barrel section, the inner side surface of the threaded barrel section is a conical surface, a connector is designed at the rear end of the barrel, the sleeve outer hoop is provided with an internal thread, and the head end of the sleeve outer hoop is also provided with a cap ring; the internal clamp comprises a truncated cone-shaped pipe fitting, the cross-sectional area at the entrance of the truncated cone-shaped pipe fitting is larger than the cross-sectional area at the tail of the pipe fitting, and the cross-sectional area at the tail of the truncated cone-shaped pipe fitting is larger than the cross-sectional area at the tail of the pipe fitting. The area is smaller than the inner cross-sectional area at the entrance of the threaded barrel section, the cross-sectional area at the entrance of the truncated cone-shaped pipe fitting is larger than the inner cross-sectional area at the entrance of the threaded barrel section, a straight pipe section is also provided at the entrance of the truncated cone-shaped pipe fitting, the diameter of the straight pipe section is smaller than the inner diameter of the cap ring on the outer hoop of the sleeve, the inner diameter of the cap ring on the outer hoop of the sleeve is smaller than the pipe diameter at the entrance of the truncated cone-shaped pipe fitting, and an expansion joint is provided on the pipe body of the internal tightening member of the sleeve. After such a design, the internal tightening member of the sleeve becomes an elastic kit, which can hold the entering angle plug auxiliary pipe tightly to ensure a locked state.

[0008] When disassembling the auxiliary tube of the angle plug door, first remove the locking nut, and use the special sleeve of the angle plug door nut to cover the auxiliary tube inside it. Then install the round clamp directly on the locking nut, and use the clearance between the locking nut and the round clamp to connect the electric wrench and the connector on the special sleeve of the angle plug door nut with the help of the electric wrench to achieve uniform rotation of the special sleeve of the angle plug door nut, thereby realizing the rapid disassembly of the locking nut of the angle plug door.

[0009] After the locking nut is removed, the auxiliary tube is disassembled, and the internal tightening part of the sleeve is first placed in the threaded barrel section of the barrel. After placing in, the front end and the straight pipe section of the truncated cone-shaped pipe fitting are located outside the threaded barrel section, and one end of the angle plug door auxiliary tube is inserted into the internal tightening part of the sleeve, and the outer hoop of the sleeve is then matched with the threaded barrel section thread. Use a hook wrench to rotate the outer hoop of the sleeve. The outer hoop of the sleeve moves axially on the threaded barrel section and pushes the internal tightening part of the sleeve into the threaded barrel section through the cap ring. During the inward axial movement of the internal tightening part of the sleeve, the threaded barrel section is forced to bear pressure, and then the pressure is transmitted to the internal tightening part of the sleeve, so that the locking sleeve of the angle plug door auxiliary tube evenly applies force to tighten the auxiliary tube, and use an adapter sleeve to connect the electric wrench and the connector on the locking sleeve of the angle plug door auxiliary tube. Relying on the electric wrench, the locking sleeve of the angle plug door auxiliary tube can be rotated at a uniform speed, thereby realizing the quick disassembly of the angle plug door auxiliary tube.

[0010] When installing the angle plug door auxiliary tube, first install the auxiliary tube, and use the angle plug door auxiliary tube locking sleeve to fasten the auxiliary tube, and then install it. Then, when installing the locking nut, the special sleeve of the angle plug door nut is installed on the locking nut before installation.

[0011] The above-mentioned universal large-diameter pipe locking and disassembly tool has a circular clamp with 8 edges on the inner surface, and the circular clamp with 8 edges on the inner surface is a circular ring structure, and the inner surface of the circular ring structure is evenly distributed with 8 convex edges.

[0012] The utility model has the following advantages:

[0013] 1. The locking nut is locked on the special ferrule tool through the clearance between the locking nut and the special ferrule. The operator can quickly disassemble and assemble the angle plug door locking nut component with an electric wrench with one hand, which greatly reduces the labor intensity of the on-site staff.

[0014] 2. By putting the locking sleeve of the angle plug auxiliary tube on the angle plug auxiliary tube, the problem of the pipe clamp wrench easily falling off during the disassembly and assembly of parts is avoided, the risk of personal safety hazards is reduced, and at the same time, the work efficiency is improved and the working hours are shortened.

[0015] 3. This kind of tool can be fully promoted to the group company and used in the entire vehicle system, which can solve the problem of difficult locking and disassembly of the auxiliary pipe of the truck corner plug door on a large scale, and at the same time achieve a certain degree of cost saving and consumption reduction. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the corner plug door.

[0017] Figure 2 It is a schematic diagram of the structure of a special ferrule for an angle plug nut.

[0018] Figure 3 This is the axonometric view of the special ferrule for the angle plug nut.

[0019] Figure 4 It is a structural schematic diagram of the locking sleeve of the auxiliary tube of the angle plug door.

[0020] Figure 5 This is the axonometric view of the locking sleeve of the angle plug auxiliary tube.

[0021] Figure 6 It is a schematic diagram of the structure of the inner clamp of the sleeve.

[0022] Figure 7 This is an axonometric view of the internal clamp of the sleeve.

[0023] Figure 8 It is a schematic diagram of the structure of the outer hoop of the sleeve.

[0024] Fig. 9 This is the axonometric view of the outer hoop of the sleeve.

[0025] Fig.10 It is a schematic diagram of the structure of the cylinder.

[0026] Fig.11 This is an exploded view of the locking sleeve of the angle plug auxiliary tube.

[0027] In the figure: 1- plug door body, 2- sealing seat, 3- ball core, 4- core-shifting shaft, 5- gasket, 6- sealing ring, 7- sealing pad, 8- cover, 9- sleeve, 10- handle, 11- locking nut, 12- clamping ring, 13- pressing ring, 14- sleeve tube body, 15- connector, 16- inner surface 8- ribbed circular clamp, 17- sleeve outer hoop, 18- sleeve internal clamp, 19- cylinder, 20- threaded cylinder section, 21- expansion joint. DETAILED DESCRIPTION

[0028] The utility model discloses a universal large-diameter pipe locking and disassembling tool, which comprises a special sleeve hoop for a folded angle plug door nut and a folded angle plug door auxiliary pipe locking sleeve.

[0029] The special ferrule for the angle plug nut includes a ferrule tube body 14, a connector 15 connected to an electric wrench is arranged at the rear end of the ferrule tube body 14, and a circular clamp head 16 with an inner surface of 8 edges is arranged at the front end of the ferrule tube body 14, and the circular clamp head 16 with an inner surface of 8 edges can be fitted with the locking nut 11; the rear end connector 15 is connected to the electric wrench. The circular clamp head with an inner surface of 8 edges is specifically a circular ring structure, and the inner surface of the circular ring structure is uniformly distributed with 8 convex edges.

[0030] The locking sleeve of the angle plug auxiliary pipe includes a sleeve outer hoop 17, a sleeve internal clamp 18 and a barrel 19. The barrel 19 adopts an extended design, and the front end is designed with external threads to form a threaded barrel section 20, which can be fastened with the sleeve outer hoop 17 by threads, and the inner cross-sectional area at the entrance of the threaded barrel section 20 is larger than the inner cross-sectional area at the tail of the barrel section. The inner side surface of the threaded barrel section 20 is a conical surface, and a connector 15 is designed at the rear end of the barrel 19, which can be connected to an electric wrench; the sleeve outer hoop 17 is designed with internal threads, and the head end of the sleeve outer hoop 17 is also provided with a cap ring, and the sleeve outer hoop 17 can be threadedly connected with the threaded barrel section 20 of the barrel; the sleeve internal clamp 18 includes The truncated cone-shaped pipe fitting has a cross-sectional area at the entrance that is larger than the cross-sectional area at the tail end of the pipe fitting. A straight pipe section is also provided at the entrance of the truncated cone-shaped pipe fitting. An expansion joint 21 extending from the entrance of the straight pipe section to the tail end of the truncated cone-shaped pipe fitting and an expansion joint 21 extending from the tail end of the truncated cone-shaped pipe fitting to the entrance of the straight pipe section are provided on the pipe body of the internal tightening member 18 of the sleeve. The two expansion joints 21 are distributed at intervals on the pipe body. After such a design, the internal tightening member 18 of the sleeve becomes an elastic kit, which can hold the entering angle plug auxiliary pipe tightly to ensure a locked state.

[0031] The disassembly and assembly process of the locking nut 11 is as follows: by directly installing the inner 8-sided circular clamp 16 of the special ferrule for the angle plug door nut on the angle plug door locking nut 11, utilizing the clearance between the locking nut 11 and the inner 8-sided circular clamp 16, and using an adapter sleeve to connect the electric wrench and the connector on the special ferrule for the angle plug door nut, the process of quickly disassembling and assembling the locking nut 11 can be achieved.

[0032] The pipe disassembly and assembly process is as follows: the internal tightening part 18 of the sleeve is placed into the threaded barrel section 20 of the barrel, one end of the angle plug gate auxiliary pipe is inserted into the internal tightening part 18 of the sleeve, and the outer hoop 17 of the sleeve is then threadedly matched with the threaded barrel section 20, and the outer hoop 17 of the sleeve is rotated with a hook wrench. The outer hoop of the sleeve moves axially on the threaded barrel section and pushes the internal tightening part of the sleeve into the threaded barrel section through the cap ring. During the inward axial movement of the internal tightening part of the sleeve, the threaded barrel section 20 is forced to bear pressure, and then the pressure is transferred to the internal tightening part 18 of the sleeve, so that the locking sleeve of the angle plug gate auxiliary pipe evenly applies force to tighten the auxiliary pipe, and an adapter sleeve is used to connect the electric wrench and the connector on the locking sleeve of the angle plug gate auxiliary pipe to realize the quick disassembly and assembly process of the angle plug gate auxiliary pipe.

[0033] This tool can be promoted and used in general pipe locking and disassembly, such as disassembly and assembly of aviation liquefied joints, engineering gas, natural gas, heating pipe system, etc., which can improve the locking function of related steel pipes.

Claims

1. A universal large-diameter pipe locking and disassembly tool, characterized by: The invention comprises a special ferrule for a folded angle plug door nut and a locking sleeve for an auxiliary pipe of a folded angle plug door; wherein the special ferrule for the folded angle plug door nut comprises a ferrule tube body (14); a connector (15) connected to an electric wrench is arranged at the rear end of the ferrule tube body (14); a circular clamp is arranged at the front end of the ferrule tube body (14); the locking sleeve for the auxiliary pipe of the folded angle plug door comprises an outer ferrule (17), an inner ferrule clamp (18) and a barrel (19); an outer thread is arranged at the front end of the barrel (19) to form a threaded barrel section (20); the thread The inner cross-sectional area at the entrance of the barrel section (20) is larger than the inner cross-sectional area at the rear of the barrel section; a connector (15) is arranged at the rear end of the barrel body (19); an outer sleeve hoop (17) is provided with an internal thread; and a cap ring is also provided at the head end of the outer sleeve hoop (17); the inner sleeve clamp (18) comprises a truncated cone-shaped pipe fitting; the cross-sectional area at the entrance of the truncated cone-shaped pipe fitting is larger than the cross-sectional area at the rear of the pipe fitting; a straight pipe section is also arranged at the entrance of the truncated cone-shaped pipe fitting; and an expansion joint (21) is arranged on the pipe body of the inner sleeve clamp.

2. A universal large-diameter pipe locking and disassembly tool according to claim 1, characterized in that: The circular clamping head is a circular clamping head (16) with eight edges on the inner surface. The circular clamping head (16) with eight edges on the inner surface is a circular ring structure, and eight convex edges are evenly distributed on the inner surface of the circular ring structure.

Images