CN216184642U - Portable contact net cantilever pre-assembly platform - Google Patents

Abstract

The utility model discloses a portable contact net cantilever pre-assembly platform which comprises a bottom frame, and an insulator fixing seat, a sleeve double-lug fixing seat, a sleeve single-lug fixing seat, a sleeve seat fixing seat and a messenger cable seat fixing seat which are arranged on the bottom frame. The portable contact net cantilever pre-assembly platform is simple in structure, each fixing seat is detachably connected with the bottom frame, transportation is facilitated, cantilever pre-assembly can be carried out on a construction site, the cantilever can be installed in place at one time, the assembled cantilever is uniform in standard, the cantilever pre-assembly accuracy is improved, repeated debugging is not needed, the construction efficiency is improved, and manpower is saved.

Description

Portable contact net cantilever pre-assembly platform

Technical Field

The utility model relates to the technical field of railway component preparation, in particular to a portable contact net cantilever pre-assembly platform.

Background

The cantilever is a supporting device of the contact net, plays a role in supporting and positioning the contact net, and bears electric and mechanical loads. The safe operation of the cantilever structure directly affects the safe operation of the high-speed train. In the construction of the contact network of the current electrified railway, the cantilever pre-allocation is an important link for the operation of the contact network in the field of urgent and difficult urgent heavy first-aid repair, and the speed of the pre-allocation speed and the size of the error directly influence the progress of the emergency first-aid repair.

Two existing wrist arm pre-allocation modes are as follows: one method is to manually perform on-site pre-assembly, and the method has the defects that the manually pre-assembled wrist arm has large error and parts cannot be installed in place at one time; the other method is to use a cantilever numerical control assembly table for pre-assembly in a pre-assembly workshop, the method is expensive, the size of the cantilever numerical control assembly table is large, and the cantilever numerical control assembly table is inconvenient to move, so that the cantilever can only be transported to the site after the cantilever is pre-assembled in the pre-assembly workshop, and the time consumption is long.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems of large error, long consumed time and the like of the existing cantilever pre-assembly mode, the utility model innovatively provides a portable contact net cantilever pre-assembly platform which is simple in structure, each fixing seat is detachably connected with a bottom frame, transportation is convenient, the cantilever pre-assembly cantilever can be mounted in place at one time in a construction site, the assembled cantilever is unified in standard, the precision of cantilever pre-assembly is improved, repeated debugging is not needed, the construction efficiency is improved, and manpower is saved.

In order to achieve the technical purpose, the utility model discloses a portable contact net cantilever pre-assembly platform in a first aspect, which comprises a bottom frame and an insulator fixing seat, a sleeve double-lug fixing seat, a sleeve single-lug fixing seat, a sleeve seat fixing seat and a messenger cable seat fixing seat which are arranged on the bottom frame, wherein the bottom frame is telescopic or foldable, the insulator fixing seat is fixedly connected with the bottom frame, and the sleeve double-lug fixing seat, the sleeve single-lug fixing seat, the sleeve seat fixing seat and the messenger cable seat fixing seat are all in sliding detachable connection with the bottom frame.

Furthermore, the insulator fixing seat comprises a single-lug clamping seat and an insulator supporting plate, the single-lug clamping seat and the insulator supporting plate are arranged along the length direction of the bottom frame, and the bottom of the single-lug clamping seat and the bottom of the insulator supporting plate are fixedly connected with the bottom frame.

Furthermore, the monaural cassette includes two parallel arrangement's first cardboard, forms the first draw-in groove of joint insulator monaural between two first cardboards.

Furthermore, the sleeve double-lug fixing seat comprises a first double-lug fixing seat and a second double-lug fixing seat, the first double-lug fixing seat and the second double-lug fixing seat are arranged along the length direction of the bottom frame, the first double-lug fixing seat comprises a limiting column and two abutting plates, the limiting column is arranged along the length direction of the bottom frame, the two abutting plates are arranged in parallel, the limiting column is clamped between the sleeve double lugs, and the two abutting plates are used for abutting against the front ends of the sleeve double lugs; and a second clamping groove for clamping two lugs of the other sleeve is arranged on the second double-lug fixing seat.

Further, the second double-lug fixing seat is cylindrical, and the second clamping groove is parallel to the axis of the cylinder.

Furthermore, the sleeve single-lug fixing seat is a flat cantilever sleeve single-lug fixing seat or an inclined cantilever sleeve single-lug fixing seat, the flat cantilever sleeve single-lug fixing seat comprises two second clamping plates which are arranged in parallel, and a third clamping groove for clamping a flat cantilever sleeve single lug is formed between the two second clamping plates; the inclined cantilever sleeve single-lug fixing seat comprises a U-shaped bolt clamping seat and a sleeve supporting plate which are arranged along the length direction of the bottom frame, and the U-shaped bolt clamping seat comprises two opposite V-shaped clamping plates.

Further, the casing seat fixing seat comprises a pipe supporting plate and two third clamping plates which are arranged in parallel along the length direction of the bottom frame, and a fourth clamping groove is formed between the two third clamping plates.

Furthermore, the messenger wire seat fixing seat comprises two fourth clamping plates which are arranged in parallel, and a fifth clamping groove for clamping the messenger wire seat bolt is formed between the two fourth clamping plates.

Furthermore, wheels are fixed at one end of the bottom frame, and a handle is fixed at the other end of the bottom frame.

Further, the bottom frame comprises a first bottom frame and a second bottom frame, the first bottom frame and the second bottom frame are in nested sliding connection, or the first bottom frame and the second bottom frame are hinged through hinges.

The utility model has the beneficial effects that:

the portable contact net cantilever pre-assembly platform is simple in structure, each fixing seat is detachably connected with the bottom frame, the bottom frame is telescopic or foldable, transportation is facilitated, cantilever pre-assembly can be carried out on a construction site, the cantilever can be installed in place at one time, the assembled cantilever is unified in standard, the cantilever pre-assembly accuracy is improved, repeated debugging is not needed, the construction efficiency is improved, and manpower is saved.

Drawings

Fig. 1 is a top view of a portable catenary cantilever provisioning platform according to an embodiment of the present invention;

FIG. 2 is a top view of a telescoping bottom frame of an embodiment of the present invention;

fig. 3 is a top view of a foldable bottom frame of an embodiment of the present invention;

FIG. 4 is a side view of a first dual ear mount in accordance with an embodiment of the present invention;

FIG. 5 is a front view of a second dual ear mount of an embodiment of the present invention;

FIG. 6 is a front view of the flat cantilever sleeve monaural mount of an embodiment of the present invention;

FIG. 7 is a front view of the angled cantilever sleeve monaural mount of an embodiment of the present invention;

FIG. 8 is a front view of a cannula holder mounting base in accordance with an embodiment of the present invention;

fig. 9 is a front view of a messenger mount anchor of an embodiment of the present invention.

In the figure, the position of the upper end of the main shaft,

1. a bottom frame; 11. a first bottom frame; 12. a second bottom frame; 13. a hinge; 2. an insulator fixing seat; 21. a single-lug card holder; 22. an insulator supporting plate; 211. a first clamping plate; 3. a sleeve double-lug fixing seat; 31. a first double-lug fixing seat; 32. a second double-lug fixing seat; 311. a limiting column; 312. a resisting plate; 321. a second card slot; 4. a sleeve single-lug fixing seat; 41. a second clamping plate; 42. a U-shaped bolt clamping seat; 43. a sleeve supporting plate; 421. a V-shaped clamping plate; 5. a sleeve seat fixing seat; 51. a tube pallet; 52. a third clamping plate; 6. a carrier cable seat fixing seat; 61. a fourth clamping plate; 7. a wheel; 8. a handle; 9. a base.

Detailed Description

The portable overhead line system cantilever pre-assembly platform provided by the utility model is explained and explained in detail below by combining the attached drawings of the specification.

The cantilever mainly comprises a sleeve, an insulator, a sleeve double lug, a sleeve single lug, a sleeve seat and a carrier cable seat, wherein the insulator, the sleeve double lug, the sleeve single lug, the sleeve seat and the carrier cable seat are fixed on the sleeve, the sleeve double lug is installed along the length direction of the sleeve, the sleeve single lug is installed perpendicular to the length direction of the sleeve, and the sleeve single lug is fixed on the sleeve through a U-shaped bolt.

As shown in fig. 1, this embodiment specifically discloses a portable contact net cantilever pre-assembly platform, insulator fixing base 2 on bottom frame 1 and bottom frame 1, sleeve pipe ears fixing base 3, sleeve pipe ears fixing base 4, sleeve pipe seat fixing base 5 and messenger wire seat fixing base 6, bottom frame 1 is telescopic or foldable, insulator fixing base 2 and bottom frame 1 fixed connection, sleeve pipe ears fixing base 3, sleeve pipe ears fixing base 4, sleeve pipe seat fixing base 5 and messenger wire seat fixing base 6 all can dismantle with bottom frame 1 slip and be connected. The telescopic or foldable bottom frame 1 has a small volume when not in use, and is convenient to store and transport. Sleeve pipe ears fixing base 3, sleeve pipe monaural fixing base 4, sleeve pipe seat fixing base 5 and messenger wire seat fixing base 6 can slide along bottom frame 1, can adjust the distance between each fixing base according to the needs of actual cantilever pre-assembly. In this embodiment, bottom frame 1 is the channel-section steel preparation, and the base 9 of the type of falling concave can be established to the bottom of sleeve pipe ears fixing base 3, sleeve pipe monaural fixing base 4, sleeve pipe seat fixing base 5 and messenger wire seat fixing base 6, and base 9 card can slide along bottom frame 1's length direction on bottom frame 1's notch. Moreover, sleeve pipe ears fixing base 3, sleeve pipe monaural fixing base 4, sleeve pipe seat fixing base 5 and messenger wire seat fixing base 6 all can be dismantled with bottom frame 1 and be connected, install on bottom frame 1 when using, dismantle when not using, are convenient for accomodate and transport. Can reasonably select the required fixing seat according to the specific pre-configuration condition, and has flexibility.

As shown in fig. 2, the bottom frame 1 includes a first bottom frame 11 and a second bottom frame 12, the first bottom frame 11 is connected with the second bottom frame 12 in a nested sliding manner to achieve the extension and contraction of the bottom frame 1, and the second bottom frame 12 can be completely received in the first bottom frame 11. The inner wall of first bottom frame 11 is equipped with the spout, and the spout sets up along the length direction of first bottom frame 11, and the outer wall of second bottom frame 12 is equipped with the slider that matches with the spout, and the length of spout is less than the length of first bottom frame 11, and the tip that is close to second bottom frame of spout plays limiting displacement, prevents the complete roll-off spout of slider. When the second bottom frame 12 is completely received in the first bottom frame 11, the entire bottom frame 1 occupies only the volume of the first bottom frame 11, facilitating transportation.

As shown in fig. 3, the first bottom frame 11 is hinged to the second bottom frame 12 by a hinge 13, so that the bottom frame 1 can be folded. The rotation axis of the hinge 13 is perpendicular to the length direction of the bottom frame 1. When the second bottom frame 12 rotates to the first bottom frame 11, the second bottom frame 12 can be almost completely accommodated in the first bottom frame 11 to the maximum extent, so that the size is reduced, and the occupied space is saved.

As shown in fig. 1, the insulator fixing seat 2 includes a single-lug clamping seat 21 and an insulator supporting plate 22, the single-lug clamping seat 21 and the insulator supporting plate 22 are arranged along the length direction of the bottom frame 1, and the bottom of the single-lug clamping seat 21 and the bottom of the insulator supporting plate 22 are both fixedly connected with the bottom frame 1. Insulator fixing base 2 is used for fixed cantilever insulator, fixes the cantilever insulator on bottom frame 1, and monaural cassette 21 is used for fixed and spacing insulator monaural, and monaural cassette 21 includes two parallel arrangement's first cardboard 211, forms the first draw-in groove of joint insulator monaural between two first cardboard 211. Insulator monaural joint is in first draw-in groove, and insulator layer board 22 holds in the palm in the bottom of insulator, makes the insulator monaural keep vertical state perpendicular to bottom frame 1 top surface, and the preferred arc of insulator cardboard carries on spacingly when playing the supporting role to the insulator to the U type bolt that is used for the fastening on the cantilever near guaranteeing the insulator is vertical, when guaranteeing the cantilever pre-arrangement fastening, is used for two U type bolt clamp plate levels of fastening unanimously, and the insulator monaural does not incline.

As shown in fig. 1, the cannula binaural fixing base 3 includes a first binaural fixing base 31 and a second binaural fixing base 32, and the first binaural fixing base 31 and the second binaural fixing base 32 are arranged along the length direction of the bottom chassis 1. As shown in fig. 1 and 4, the first double-lug fixing seat 31 includes two abutting plates 312 arranged in parallel and a limiting column 311 arranged along the length direction of the bottom frame 1, the two abutting plates 312 are located at the front end of the limiting column 311, the distance between the two abutting plates 312 is the same as the distance between the two lugs, the limiting column 311 is clamped between the two lugs of the sleeve, and the two abutting plates 312 are used for abutting against the front end of the two lugs of the sleeve to fix and limit one of the two lugs; as shown in fig. 1 and 5, the second double-lug fixing seat 32 is provided with a second slot 321 for clamping two lugs of another sleeve, and the two lugs are clamped in the second slot 321 for fixing and limiting. The second double-lug fixing seat 32 is cylindrical, and the second locking groove 321 is parallel to the axis of the cylinder. The second clamping groove 321 is formed in the top of the cylinder, and when the double lugs of the sleeve are clamped, the double lugs of the sleeve can move downwards from the upper side to be clamped into the second clamping groove 321. The two double ears are used during the pre-arrangement of the wrist arm, the directions of the two double ears need to be kept consistent, the first double-ear fixing seat 31 is used for fixing one of the two double ears, and the second double-ear fixing seat 32 is used for fixing the other double ear, so that the two double ears are arranged along the length direction of the wrist arm and the length direction of the bottom frame 1, and the pre-arrangement directions are kept consistent.

The sleeve single-lug fixing seat 4 is a flat cantilever sleeve single-lug fixing seat or an inclined cantilever sleeve single-lug fixing seat, is selectively used according to specific pre-configuration requirements, and is selectively assembled on the bottom frame 1. When the device is pre-assembled, the single lug is fixed on the sleeve through the U-shaped bolt, the U-shaped bolt surrounds the sleeve, and two ends of the U-shaped bolt are connected with two sides of the single lug. The installation directions of the single ears of the sleeve are just opposite when the flat cantilever and the inclined cantilever are used, so the used fixing seats are different. As shown in fig. 6, the fixing seat for the single lug of the flat cantilever sleeve comprises two second clamping plates 41 arranged in parallel, a third clamping groove for clamping the single lug of the flat cantilever sleeve is formed between the two second clamping plates 41, the single lug of the flat cantilever sleeve is clamped in the third clamping groove from top to bottom, the single lug of the flat cantilever sleeve is vertically downward, the U-shaped bolt is positioned above the single lug, and the opening of the U-shaped bolt faces downward. The first clamping groove and the third clamping groove are in the same direction, so that the main surfaces of the single ear of the insulator and the single ear of the flat cantilever sleeve are along the length direction of the bottom frame 1, but the single ear of the insulator is vertically placed in the front and back direction, and the single ear of the flat cantilever is vertically placed in the up and down direction. As shown in fig. 1 and 7, the oblique cantilever sleeve monaural fixing base includes the U type bolt cassette 42 and the sleeve layer board 43 of arranging along bottom frame 1 length direction, U type bolt cassette 42 includes two relative V type cardboard 421, the opening of two V type cardboard 421 is relative, the sleeve layer board 43 holds up the sleeve pipe, the blind end card of U type bolt is in the V mouth of two V type cardboard 421, the opening of U type bolt is up, make the monaural vertical upwards, and the length direction of the principal face of monaural along bottom frame 1, it is unanimous with the pre-prepared direction. The sleeve support plate 43 is preferably two vertical plates spaced a distance apart to secure and limit the sleeve.

The casing seat includes the sleeve of cover on the sleeve pipe and with sleeve fixed connection's monaural, as shown in fig. 1 and 8, casing seat fixing base 5 includes the conduit saddle board 51 and the third cardboard 52 of two parallel arrangement that arrange along bottom frame 1 length direction, forms the fourth draw-in groove between two third cardboard 52. When the flat cantilever sleeve seat is fixed, the sleeve of the sleeve seat is supported by the pipe support plate 51, and the single lug of the sleeve seat is clamped in the fourth clamping groove, so that the single lug direction of the sleeve seat is consistent with the single lug direction of the flat cantilever sleeve, the sleeve is vertical downwards, and the whole assembled flat cantilever is not inclined vertically. When the inclined cantilever casing seat is fixed, a single lug of the casing seat needs to be vertically upward, the pipe support plate 51 is supported below the casing pipe, and the two third clamping plates 52 are supported below the sleeve and play a role of a supporting plate, so that the single lug of the casing seat is vertically upward and keeps consistent with the single lug direction of the inclined cantilever casing pipe, and the whole inclined cantilever after being assembled is guaranteed not to be inclined vertically.

As shown in fig. 1 and 9, the messenger base fixing seat 6 includes two parallel fourth clamping plates 61, and a fifth clamping groove for clamping the messenger base bolt is formed between the two fourth clamping plates 61. And the bolt of the carrier cable seat is clamped in the fifth clamping groove, the carrier cable slot is kept horizontal, and the carrier cable seat is fixed and aligned to be consistent with the direction of other parts.

One end of the bottom frame 1 is fixed with a wheel 7, and the other end of the bottom frame 1 is fixed with a handle 8. During transportation, the wheels 7 are placed on the ground, and the bottom frame 1 can be pulled to move by pulling the handle 8, so that the transportation and carrying are convenient. The wheels 7 are nylon wheels 7, so that the whole body is light and easy to carry.

The bottom frame 1 of this embodiment adopts 4mm thickening channel-section steel preparation, and is collapsible or flexible, and full length 3500mm, folding back or flexible back length 1800mm, whole light easily carry.

The working process of the cantilever pre-assembly platform for cantilever pre-assembly is as follows: first stretch out first bottom frame 11 with second bottom frame 12 at first, perhaps rotate out first bottom frame 11 with second bottom frame 12, make second bottom frame 12 and first bottom frame 11 on same straight line, expand bottom frame 1, then according to concrete pre-prepared demand, choose for use other fixing bases except insulator fixing base 2, choose for use flat cantilever sleeve pipe monaural fixing base when leveling the cantilever in advance, choose for use oblique cantilever sleeve pipe monaural fixing base when pre-prepared oblique cantilever, through base slip joint on bottom frame, and the distance between each fixing base of sliding adjustment, then install each spare part on corresponding fixing base, just can assemble into a complete cantilever, whole process easy operation, and the cantilever standard of pre-prepared is unified. After the pre-assembly is completed, each fixing seat is detached and taken down in a sliding mode, and the bottom frame is shortened or folded to be stored.

The cantilever pre-assembly platform can vertically fix all parts of the cantilever, the connecting parts are closely and firmly attached, the flat and inclined cantilevers are assembled in place at one time, the safety of a contact net power supply system can be guaranteed, and the matching stability of a high-speed train bow net is guaranteed. The cantilever pre-assembly device is suitable for field emergency and difficult heavy first-aid repair cantilever pre-assembly work, shortens first-aid repair time, improves work efficiency and saves cost. Each part fixing seat can be freely detached from the bottom frame 1, and the foldable or telescopic design is provided with the handle and the wheels 7, so that the bicycle is more portable and easy to carry.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the utility model and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the utility model.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the description herein, references to the description of the term "the present embodiment," "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents and simplifications made in the spirit of the present invention are intended to be included in the scope of the present invention.

Claims (10)

1. The utility model provides a portable contact net cantilever pre-prepared platform, its characterized in that, insulator fixing base (2), sleeve pipe ears fixing base (3), sleeve pipe monaural fixing base (4), sleeve pipe seat fixing base (5) and messenger wire seat fixing base (6) on bottom frame (1) and bottom frame (1), bottom frame (1) is telescopic or foldable, insulator fixing base (2) with bottom frame (1) fixed connection, sleeve pipe ears fixing base (3), sleeve pipe monaural fixing base (4), sleeve pipe seat fixing base (5) and messenger wire seat fixing base (6) all with bottom frame (1) slip can dismantle the connection.

2. The portable overhead line system cantilever pre-assembly platform of claim 1, wherein the insulator fixing seat (2) comprises a single-lug clamping seat (21) and an insulator supporting plate (22), the single-lug clamping seat (21) and the insulator supporting plate (22) are arranged along the length direction of the bottom frame (1), and the bottom of the single-lug clamping seat (21) and the bottom of the insulator supporting plate (22) are both fixedly connected with the bottom frame (1).

3. The portable overhead line system cantilever pre-assembly platform of claim 2, wherein the monaural card holder (21) comprises two first card boards (211) arranged in parallel, and a first card slot for clamping the insulator monaural is formed between the two first card boards (211).

4. The portable overhead line system cantilever pre-assembly platform of claim 1, wherein the sleeve double-lug fixing seat (3) comprises a first double-lug fixing seat (31) and a second double-lug fixing seat (32), the first double-lug fixing seat (31) and the second double-lug fixing seat (32) are arranged along the length direction of the bottom frame (1), the first double-lug fixing seat (31) comprises a limiting column (311) and two abutting plates (312) which are arranged in parallel along the length direction of the bottom frame (1), the limiting column (311) is clamped between the double lugs of the sleeve, and the two abutting plates (312) are used for abutting against the front ends of the double lugs of the sleeve; and a second clamping groove (321) for clamping the two lugs of the other sleeve is arranged on the second double-lug fixing seat (32).

5. The portable catenary cantilever preparation platform of claim 4, wherein the second double-lug fixing seat (32) is cylindrical, and the second clamping groove (321) is parallel to the axis of the cylinder.

6. The portable overhead line system cantilever pre-assembly platform of claim 1, wherein the sleeve monaural fixing seat (4) is a flat cantilever sleeve monaural fixing seat or an inclined cantilever sleeve monaural fixing seat, the flat cantilever sleeve monaural fixing seat comprises two second clamping plates (41) arranged in parallel, and a third clamping groove for clamping a single lug of a flat cantilever sleeve is formed between the two second clamping plates (41); the inclined cantilever sleeve single-lug fixing seat comprises a U-shaped bolt clamping seat (42) and a sleeve supporting plate (43) which are arranged along the length direction of the bottom frame (1), and the U-shaped bolt clamping seat (42) comprises two opposite V-shaped clamping plates (421).

7. The portable catenary cantilever pre-assembly platform according to claim 1, wherein the casing seat fixing seat (5) comprises a pipe support plate (51) and two third clamping plates (52) which are arranged in parallel along the length direction of the bottom frame (1), and a fourth clamping groove is formed between the two third clamping plates (52).

8. The portable catenary cantilever pre-assembly platform of claim 1, wherein the messenger base fixing seat (6) comprises two parallel fourth clamping plates (61), and a fifth clamping groove for clamping a messenger base bolt is formed between the two fourth clamping plates (61).

9. The portable overhead line system cantilever pre-assembly platform of claim 1, wherein a wheel (7) is fixed at one end of the bottom frame (1), and a handle (8) is fixed at the other end of the bottom frame (1).

10. The portable catenary cantilever provisioning platform according to claim 1, wherein the base frame (1) comprises a first base frame (11) and a second base frame (12), wherein the first base frame (11) and the second base frame (12) are in nested sliding connection, or wherein the first base frame (11) and the second base frame (12) are hinged by a hinge (13).

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