Simple tool convenient for replacing overhead line system cantilever insulator

Abstract

The simple tool comprises a first lower sleeve and a first telescopic rod inserted in the first lower sleeve, a long-strip-shaped opening is formed in the side wall of the first lower sleeve in the axis direction of the first lower sleeve, a chain block is hung on the portion, above the opening, of the side wall of the first lower sleeve, and the first telescopic rod is inserted in the first lower sleeve. A lifting hook of the chain block is matched with the lower end of the first telescopic rod through the opening, and a supporting base used for supporting the cantilever is arranged at the top of the first telescopic rod. The simple tool convenient for replacing the cantilever insulator of the contact network is simple in structure, comprises a first lower sleeve and a first telescopic rod which are sleeved together, and has scalability, the first telescopic rod can ascend relative to the first lower sleeve through a chain block, the outer end of a flat cantilever is jacked up, the cantilever does not deviate, and the cantilever insulator is convenient to replace. Therefore, the insulator can be replaced safely and quickly, and the guide height change is not caused after the replacement is finished, and the guide height does not need to be adjusted.

Description

Technical Field

[0001] The utility model relates to the technical field of contact network construction auxiliary tools, in particular to a simple tool for replacing contact network wrist arm insulators. Background Art

[0002] The high-speed rail contact network wrist arm is a structural device installed at the upper end of the pillar to support the positioning device and the contact suspension. It transfers the load of the contact suspension to the pillar or other buildings. When the insulator on the fixed device wrist arm is damaged, the wrist arm will sag, increase the tension of the contact network, and cause short circuit or leakage. Therefore, in order to ensure the normal passage of the train, the insulator on the damaged wrist arm must be replaced. Due to the limited life of the contact network wrist arm insulator, it needs to be replaced regularly. The wrist arm is fixed to the pillar with bolts, nuts and cotter pins. The wrist arm bears the contact wire and the load-bearing cable. All these forces are based on bolts as fulcrums. Therefore, there must be equipment to apply support force to the wrist arm so that the bolt is not subject to external pressure. Only in this way can the insulator be replaced. However, the transportation of high-speed rail lines is tight, the repair time is short, and the force is large. Ordinary tools cannot easily replace insulators, the degree of danger of workers' maintenance increases, and the maintenance hours increase, which is not conducive to the rapid maintenance of high-speed rail lines. Therefore, it is necessary to provide a tool that is convenient for replacing the contact network wrist arm insulator. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a tool for facilitating replacement of contact network wrist arm insulators, which has a simple structure, is safe and fast to replace insulators, and does not cause conductor height changes after replacement, and does not need to adjust the conductor height.

[0004] In order to solve the above problems, the technical solution adopted by the utility model is:

[0005] A simple tool for replacing contact network wrist arm insulators comprises: a first lower casing and a first telescopic rod inserted in the first lower casing, a side wall of the first lower casing is provided with a long strip opening along its axial direction, a hand chain hoist is hung above the opening on the side wall of the first lower casing, a lifting hook of the hand chain hoist is matched with the lower end of the first telescopic rod through the opening, and a support seat for supporting the wrist arm is arranged on the top of the first telescopic rod.

[0006] As an embodiment of the utility model, the first telescopic rod includes a first insert tube and a second insert tube inserted in the first insert tube, a plurality of through first connecting holes are evenly opened on the side wall of the first insert tube along its axial direction, a through hole corresponding to the first connecting hole is opened at the lower end of the second insert tube, and the first insert tube and the second insert tube are connected together by a first bolt assembly.

[0007] As an implementation manner of the present utility model, a plurality of first connecting holes are provided.

[0008] As an embodiment of the utility model, a hanging hook is provided on the upper side wall of the first lower casing, the hand chain hoist is hung on the hanging hook, the lifting chain of the hand chain hoist is connected to the lifting hook, and the lifting hook passes through the opening and is hooked on the bottom of the first insert pipe.

[0009] As an implementation mode of the utility model, an arc-shaped portion adapted to the outer diameter of the flat wrist arm is provided in the middle of the support seat for stably supporting the flat wrist arm.

[0010] As an implementation mode of the utility model, a base is provided at the lower end of the first lower casing.

[0011] As an embodiment of the utility model, a connecting plate is fixedly provided on the upper end of the first telescopic rod perpendicular to its axis, and no less than three hinge seats are evenly arranged on the bottom of the connecting plate. The hinge seat is hinged to the upper end of the second telescopic rod, and the lower end of the second telescopic rod is inserted into the second lower sleeve, and a fastening device is arranged between the second lower sleeve and the second telescopic rod.

[0012] As an embodiment of the utility model, the second telescopic rod includes a third insert tube and a fourth insert tube, the third insert tube is inserted in the fourth insert tube, a plurality of second connecting holes are evenly opened on the side wall of the fourth insert tube along its axial direction, and the third insert tube and the fourth insert tube are connected together by a second bolt assembly.

[0013] As an implementation mode of the utility model, the fastening device includes a threaded hole opened on the side wall of the upper end of the second lower casing and a tightening bolt arranged at the threaded hole.

[0014] As an embodiment of the utility model, the fastening device includes an internal thread arranged at the upper end of the second lower casing and an external thread arranged at the lower end of the fourth insert pipe and adapted to the internal thread. The lower end of the fourth insert pipe is also threaded with an internal thread sleeve.

[0015] The beneficial effects of adopting the above technical solution are:

[0016] The utility model provides a tool for facilitating replacement of contact network wrist arm insulators. The tool has a simple structure, a base is arranged at the lower end and is placed on a railway sleeper, a support seat is arranged at the upper end and the outer end of a flat wrist arm can be lifted up, a first lower casing and a first telescopic rod are sleeved together in the middle part, and the tool has retractability. The first telescopic rod can be raised relative to the first lower casing by a hand chain hoist to lift up the outer end of the flat wrist arm, and the wrist arm will not be offset, so that the insulator can be replaced safely and quickly, and after the replacement is completed, the conductor height will not change and there is no need to adjust the conductor height. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of embodiment 1 of the utility model.

[0018] Figure 2 yes Figure 1 A partial enlarged schematic diagram in the middle.

[0019] Figure 3 It is a schematic diagram of the structure after the hand chain hoist is removed in Example 1 of the utility model.

[0020] Figure 4 yes Figure 3 A partial enlarged schematic diagram of point B in the middle.

[0021] Figure 5 It is a schematic diagram of the use status of Example 1 of the utility model.

[0022] Figure 6 It is a structural schematic diagram of embodiment 2 of the present utility model.

[0023] Figure 7 yes Figure 6 A partial enlarged schematic diagram of point C in the middle.

[0024] Among them: 1 pillar, 2 flat wrist arm, 3 inclined wrist arm, 4 insulator, 5 load-bearing cable seat, 6 first lower casing, 7 opening, 8 suspension hook, 9 base, 10 first plug pipe, 11 first connecting hole, 12 second plug pipe, 13 first bolt assembly, 14 support seat, 1401 arc portion, 15 hand chain hoist, 16 lifting chain, 17 lifting hook, 18 connecting plate, 19 hinge seat, 20 connecting plate, 21 third plug pipe, 22 fourth plug pipe, 23 second connecting hole, 24 second bolt assembly, 25 second lower casing, 26 tightening bolt, 27 internal threaded sleeve, 28 rope. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solutions and advantages of the utility model clearer, the utility model is clearly and completely described below in conjunction with specific embodiments.

[0026] like Figure 5 As shown, the arm includes a flat arm 2 and an oblique arm 3 arranged at the top of the support 1, the outer ends of the flat arm 2 and the oblique arm 3 are connected together, an insulator 4 is arranged between the flat arm 2 and the oblique arm 3 and the support 1, and a load-bearing cable seat 5 is arranged at the outer end of the flat arm 2, and the insulator 4 needs to be replaced regularly.

[0027] Embodiment 1:

[0028] like Figure 1-Figure 4A simple tool for replacing contact network wrist arm insulators is shown, which includes: a first lower casing 6 and a first telescopic rod inserted into the first lower casing 6 from the upper end, the side wall of the first lower casing 6 is provided with a long strip opening 7 along its axial direction, a hand winch 15 is hung above the opening 7 on the side wall of the first lower casing 6, a lifting hook 17 of the hand winch 15 cooperates with the lower end of the first telescopic rod through the opening 7, a support seat 14 for supporting the wrist arm is provided at the top of the first telescopic rod, and a base 9 is provided at the lower end of the first lower casing 6.

[0029] The tool for facilitating replacement of the contact network wrist arm insulator has a simple structure, a base 9 is provided at the lower end, which is placed on the railway sleeper, and a support seat 14 is provided at the upper end, which can lift up the outer end of the flat wrist arm 2. The middle part is a first lower casing 6 and a first telescopic rod that are sleeved together, which are retractable. The first telescopic rod can be raised relative to the first lower casing 6 by a hand winch 15 to lift up the outer end of the flat wrist arm 2, and the wrist arm will not be offset, so that the insulator 4 can be replaced safely and quickly, and the conductor height will not change after the replacement is completed, and there is no need to adjust the conductor height.

[0030] As a further optimization, the first telescopic rod includes a first insert tube 10 and a second insert tube 12 inserted in the first insert tube 10, a plurality of through first connecting holes 11 are evenly opened on the side wall of the first insert tube 10 along its axial direction, a through hole corresponding to the first connecting hole 11 is opened at the lower end of the second insert tube 12, and the first insert tube 10 and the second insert tube 12 are connected together by a first bolt assembly 13. In this embodiment, a plurality of first connecting holes 11 are provided. The first plug 10 and the second plug 12 are provided to facilitate storage of the entire tool. The plurality of first connecting holes 11 are provided to increase the height adjustable range of the entire tool, and the tool can be applied to the replacement of wrist insulators of different heights. The first plug 10 and the second plug 12 are first fixed by the first bolt assembly 13 according to the height of the wrist insulator, and then the first plug 10 is moved upward along the first lower casing 6 until the lower end of the first plug 10 is located at the opening 7, and the lifting hook 17 is hooked on the lower end of the first plug 10. The lifting hook 17 is controlled to rise by operating the hand chain of the hand winch 15. Driven by the lifting hook 17, the first plug 10 moves upward relative to the first lower casing 6, and the outer end of the flat wrist 2 is lifted up by the support seat 14, and the hand winch 15 is locked, so as to replace the insulator 4.

[0031] A hanging hook 8 is provided on the upper side wall of the first lower casing 6, and the hand winch 15 is hung on the hanging hook 8. The lifting chain 16 of the hand winch 15 is connected to the lifting hook 17, and the lifting hook 17 can be hooked on the bottom of the first insert pipe 10 after passing through the opening 7.

[0032] As a further optimization, an arc-shaped portion 1401 adapted to the outer diameter of the flat wrist arm 2 is provided in the middle of the support seat 14 for stably supporting the flat wrist arm 2 .

[0033] Embodiment 2:

[0034] like Figure 6 and Figure 7 As shown, the difference between this embodiment and embodiment 1 is that: the upper end of the first telescopic rod is fixedly provided with a connection plate 18 perpendicular to its axis, and the bottom of the connection plate 18 is evenly provided with no less than three hinge seats 19, and the hinge seats 19 are hinged together with the upper end of the second telescopic rod, and the lower end of the second telescopic rod is inserted into the second lower sleeve 25, and a fastening device is provided between the second lower sleeve 25 and the second telescopic rod. After the first lower sleeve 6 and the first telescopic rod complete the support of the wrist arm, the second lower sleeve 25 and the second telescopic rod are opened and fixed by the fastening device, at which time the second lower sleeve 25 is in contact with the subway sleeper, and the multiple second lower sleeves 25 and the second telescopic rods arranged around the first lower sleeve 6 and the first telescopic rod can assist the first lower sleeve 6 and the first telescopic rod to better support the wrist arm, greatly improve the strength, and make the overall structure more stable.

[0035] As a further optimization, the second telescopic rod includes a third inserting tube 21 and a fourth inserting tube 22, the third inserting tube 21 is inserted in the fourth inserting tube 22, and a plurality of second connecting holes 23 are evenly opened on the side wall of the fourth inserting tube 22 along the axial direction thereof, the third inserting tube 21 and the fourth inserting tube 22 are connected together by a second bolt assembly 24, and a connecting plate 20 is fixedly provided at the upper end of the third inserting tube 21, and the connecting plate 20 is hinged together with the hinge seat 19. The third inserting tube 21 and the fourth inserting tube 22 are arranged to facilitate storage of the entire tool and facilitate transfer and transportation. The hinge seat 19 is located at the edge of the connecting plate 18, so that a gap is left between the upper end of the third inserting tube 21 and the second inserting tube 12, so that after the second lower sleeve 25, the third inserting tube 21 and the fourth inserting tube 22 are completely stored together, after the first lower sleeve 6, the first inserting tube 10 and the second inserting tube 12 are completely stored together, the axes of the first lower sleeve 6 and the second lower sleeve 25 can be in a state of being parallel to each other, thereby facilitating loading and unloading of the entire tool.

[0036] As a further optimization, a rope 28 is connected between the first lower casing 6 and the second lower casing 25 to prevent the lower end of the second lower casing 25 from slipping due to excessive force, thereby enhancing the stability of the overall structure.

[0037] The fastening device is used to fix the second lower casing 25 and the fourth inserting tube 22 together. As an embodiment, the fastening device includes a threaded hole provided on the side wall of the upper end of the second lower casing 25 and a tightening bolt 26 provided at the threaded hole. As another embodiment, the fastening device includes an internal thread provided at the upper end of the second lower casing 25 and an external thread provided at the lower end of the fourth inserting tube 22 and adapted to the internal thread. The lower end of the fourth inserting tube 22 is also screwed with an internal thread sleeve 27. By providing the internal thread sleeve 27, it cooperates with the internal thread in the second lower casing 25 to achieve a double nut locking effect.

[0038] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A simple tool for replacing the insulator of the contact network wrist arm, characterized in that: It includes: A first lower sleeve and a first telescopic rod inserted in the first lower sleeve, a side wall of the first lower sleeve is provided with a long strip opening along its axial direction, a hand winch is hung above the opening on the side wall of the first lower sleeve, a lifting hook of the hand winch is matched with the lower end of the first telescopic rod through the opening, and a support seat for supporting the wrist arm is provided at the top of the first telescopic rod.

2. A simple tool for replacing contact network arm insulators according to claim 1, characterized in that: The first telescopic rod includes a first insert tube and a second insert tube inserted in the first insert tube. A plurality of through first connecting holes are evenly opened on the side wall of the first insert tube along its axial direction. A through hole corresponding to the first connecting hole is opened at the lower end of the second insert tube. The first insert tube and the second insert tube are connected together by a first bolt assembly.

3. A simple tool for replacing contact network wrist arm insulators according to claim 2, characterized in that: A plurality of the first connecting holes are provided.

4. A simple tool for replacing contact network wrist arm insulators according to claim 2, characterized in that: A hanging hook is provided on the upper side wall of the first lower casing, the hand chain hoist is hung on the hanging hook, the lifting chain of the hand chain hoist is connected to the lifting hook, and the lifting hook passes through the opening and is hooked on the bottom of the first insert pipe.

5. A simple tool for replacing contact network arm insulators according to claim 1, characterized in that: An arc portion matching the outer diameter of the flat wrist arm is provided in the middle of the support seat, which is used for stably supporting the flat wrist arm.

6. A simple tool for replacing contact network arm insulators according to claim 1, characterized in that: A base is arranged at the lower end of the first lower casing.

7. A simple tool for replacing contact network wrist arm insulators according to any one of claims 1 to 6, characterized in that: A connecting plate is fixedly disposed on the upper end of the first telescopic rod and is perpendicular to its axis. No less than three hinge seats are evenly arranged on the bottom of the connecting plate. The hinge seats are hinged to the upper end of the second telescopic rod. The lower end of the second telescopic rod is inserted into the second lower sleeve. A fastening device is arranged between the second lower sleeve and the second telescopic rod.

8. A simple tool for replacing contact network arm insulators according to claim 7, characterized in that: The second telescopic rod includes a third insert tube and a fourth insert tube, the third insert tube is inserted in the fourth insert tube, a plurality of second connecting holes are evenly opened on the side wall of the fourth insert tube along its axial direction, and the third insert tube and the fourth insert tube are connected together by a second bolt assembly.

9. A simple tool for replacing contact network wrist arm insulators according to claim 8, characterized in that: The fastening device comprises a threaded hole formed on the side wall of the upper end of the second lower casing and a tightening bolt arranged at the threaded hole.

10. A simple tool for replacing contact network wrist arm insulators according to claim 8, characterized in that: The fastening device comprises an internal thread arranged at the upper end of the second lower casing and an external thread arranged at the lower end of the fourth inserting pipe and matched with the internal thread. The lower end of the fourth inserting pipe is also screwed with an internal thread sleeve on the outside.

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