Power supply line iron tower for electrified railway contact network

Abstract

The invention relates to the field of power equipment, in particular to a power supply line iron tower for an electrified railway contact network, a lifting seat is vertically and slidably mounted on a tower body, a fixing seat is fixedly mounted on the lifting seat, a positioning pin is transversely and slidably mounted on the fixing seat, and a positioning plate matched with the positioning pin is fixedly mounted on the tower body; the end, close to the positioning plate, of each positioning pin is provided with a protruding spherical surface, the positioning plate is provided with multiple arc-shaped grooves allowing one end of each positioning pin to be clamped therein, the multiple arc-shaped grooves are vertically and evenly arranged at intervals, the fixing base is provided with first springs used for pushing the positioning pins to be clamped into the arc-shaped grooves, and the fixing base is further provided with a locking mechanism used for preventing the positioning pins from being separated from the arc-shaped grooves. After the lifting seat and the cantilever are adjusted to the needed height and the positioning pin is clamped into the arc-shaped groove with the corresponding height, the electromagnet is powered off, and the end, away from the positioning pin, of the movable column is blocked through the check block, so that the positioning pin and the movable column cannot smoothly move outwards in the direction away from the arc-shaped groove.

Description

Technical Field

[0001] The present invention relates to the field of electric power equipment, and in particular to a power supply line iron tower used for an electrified railway contact network. Background Art

[0002] Electrified railway catenary power supply towers are a crucial component of the railway's power supply system. Their design and installation require precise calculation and planning, with parameters such as height, spacing, and structural strength optimized according to the specific conditions of the railway line to ensure reliable and safe power supply.

[0003] To ensure the long-term stable operation of the tower, regular inspection and maintenance are required. This inspection includes visual inspection to check for signs of rust and deformation, as well as structural strength testing to ensure it can withstand the load of the power supply line. The railway catenary is the transmission line erected above the railway line that supplies power to electric locomotives. The current that trains rely on is transmitted through the catenary above the locomotive. A power outage in the catenary, or poor contact between the train pantograph and the catenary, can affect the train's power supply.

[0004] In the prior art, the utility model patent with application number CN202122430750.0 discloses a railway contact network bracket adjustment tool, including a support frame, which is detachably connected to the top of a steel column; the side of the steel column is connected to a pantograph bracket; three wire wheel assemblies are provided on the support frame, and the three wire wheel assemblies are arranged in a triangular shape; the three wire wheel assemblies are equipped with steel wire ropes for connecting the pantograph bracket.

[0005] The aforementioned railway catenary support adjustment tool efficiently adjusts the pantograph support height by connecting an electric or manual hoist to one end of a wire rope. However, the pantograph support height is maintained solely by the wire rope, which can easily stretch and deform under long-term stress, causing the pantograph support height to change. In severe cases, the wire rope may even break, causing the pantograph support to fall and cause accidents. This requires improvement. Summary of the Invention

[0006] The object of the present invention is to provide a power supply line tower for an electrified railway contact network, which can effectively lock the height of the cantilever to solve the defects mentioned in the above background technology.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] A power supply line tower for an electrified railway contact network comprises a vertically arranged tower body, a lifting seat being vertically slidably mounted on the tower body, the lifting seat being lifted and lowered by a steel wire rope, a cantilever being fixedly mounted on one side of the lifting seat for hanging a power transmission line; a fixed seat being fixedly mounted on the lifting seat, a positioning pin being laterally slidably mounted on the fixed seat, a positioning plate matching the positioning pin being fixedly mounted on the tower body, one end of the positioning pin facing the positioning plate, an end of the positioning pin close to the positioning plate being provided with a protruding spherical surface, an arc-shaped groove being provided on the positioning plate for one end of the positioning pin to be clamped into, a plurality of arc-shaped grooves being evenly spaced vertically, a first spring being provided on the fixing seat for pushing the positioning pin into the arc-shaped groove, and a locking mechanism being further provided on the fixing seat for preventing the positioning pin from being separated from the arc-shaped groove.

[0009] As a further improvement, a first mounting cavity is provided in the fixing seat, and a through hole is provided on one side wall of the first mounting cavity, which transversely penetrates the outer wall of the fixing seat. The positioning pin is movably installed in the through hole, one end of the positioning pin extends out of the first mounting cavity and is provided with the spherical surface, and the other end of the positioning pin is fixedly installed with a baffle located in the first mounting cavity, and the first spring is provided between the side of the baffle facing away from the positioning pin and the inner wall of the first mounting cavity.

[0010] As a further improvement, the locking mechanism includes a movable column fixedly mounted on the side of the baffle away from the positioning pin, the movable column and the positioning pin are coaxially arranged, a sliding cavity for the movable column to enter is provided on one side wall of the first mounting cavity, and a second mounting cavity is provided in the fixed seat located on the side of the sliding cavity, a metal plate is installed in the second mounting cavity along the radial sliding of the movable column, the metal plate is fixedly mounted on the side close to the sliding cavity, a connecting port for the block to enter is provided on the side wall of the sliding cavity, a second spring is provided between the metal plate and the inner wall of the second mounting cavity for allowing one end of the block to extend into the sliding cavity; when one end of the positioning pin is stuck in the arc groove, the thrust of the second spring causes one end of the block to extend into the sliding cavity, and the block prevents the movable column from moving in a direction away from the arc groove.

[0011] As a further improvement, a guide rod extending radially along the movable column is fixedly installed in the second installation cavity, and the metal plate is slidably installed on the guide rod.

[0012] As a further improvement, an electromagnet for adsorbing the metal plate is fixedly mounted on the inner wall of the second mounting cavity, and the electromagnet is located on a side of the metal plate away from the stop block.

[0013] As a further improvement, vertically extending guide rails are fixedly mounted on opposite sides of the tower body, and guide wheels matching the guide rails are mounted on the lifting seat.

[0014] As a further improvement, a V-shaped groove is provided around the outer peripheral surface of the guide wheel, and the guide rail is consistent with the V-shaped groove.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. When the height of the lifting seat and cantilever needs to be adjusted, the electromagnet is energized, and the electromagnet attracts the metal plate and moves it upward. The metal plate drives the block to move upward and out of the sliding cavity. When the lifting seat is raised or lowered, the positioning pin can move outward smoothly and out of the arc groove, which is very convenient for adjusting the height of the transmission line;

[0017] 2. After the lifting seat and cantilever are adjusted to the required height and the positioning pin is engaged in the arc groove of the corresponding height, the electromagnet is de-energized, and the second spring pushes the metal plate downward. The metal plate drives the stopper to extend downward into the sliding cavity. The stopper blocks the end of the movable column away from the positioning pin, preventing the positioning pin and the movable column from moving smoothly outward away from the arc groove, thereby limiting the up and down movement of the lifting seat and keeping the height of the lifting seat and cantilever more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 It is a structural diagram of an embodiment of the present invention;

[0020] Figure 2 yes Figure 1 Middle AA cross-sectional view;

[0021] Figure 3 is a schematic structural diagram of a fixing base according to an embodiment of the present invention;

[0022] Figure 4 1 is a schematic top view of a lifting seat according to an embodiment of the present invention;

[0023] Figure 5 yes Figure 4 A partial enlarged view of part I.

[0024] In the figure: 1-tower body; 2-base; 4-column; 5-cross bar; 6-diagonal bar; 7-lifting seat; 8-wire rope; 9-bracket; 10-first guide wheel; 11-second guide wheel; 12-connecting plate; 13-wire rope reel; 14-cantilever; 15-fixed seat; 16-first installation cavity; 17-through hole; 18-locating pin; 19-locating plate; 20-spherical surface; 21-arc groove; 22-baffle; 23-first spring; 24-movable column; 25-sliding cavity; 26-second installation cavity; 27-metal plate; 28-guide rod; 29-block; 30-connecting port; 31-second spring; 32-electromagnet; 33-guide rail; 34-guide wheel; 35-V-groove. DETAILED DESCRIPTION

[0025] The following will provide a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0026] like Figures 1 to 5 As shown, a power supply line tower for an electrified railway contact network includes a vertically arranged tower body 1, the tower body 1 includes a base 2, four vertically extending columns 4 are welded to the top of the base 2, and the four columns 4 are arranged in a rectangular array. A cross bar 5 is welded between two front and rear opposing columns 4 and between two left and right opposing columns 4 respectively. A plurality of cross bars 5 are arranged at even intervals vertically, and an X-shaped cross-arranged oblique bar 6 is further welded between two adjacent cross bars 5 above and below to improve the stability of the tower body 1.

[0027] like Figure 1 and Figure 4As shown, a lifting base 7 is vertically slidably mounted on the tower body 1. The lifting base 7 is a square tube-shaped device that is sleeved onto the outside of the tower body 1. The lifting base 7 is raised and lowered by a wire rope 8. A cantilever 14 for suspending power lines is bolted or welded to one side of the lifting base 7. A bracket 9 is bolted or welded to the top of the tower body 1. A first guide wheel 10 and a second guide wheel 11 are rotatably mounted on the bracket 9. The first guide wheel 10 extends out the side of the tower body 1, and the second guide wheel 11 is located directly above the tower body 1. A connecting plate 12 is fixedly mounted on one side of the lifting base 7 and is located directly below the first guide wheel 10. One end of the wire rope 8 is fixedly connected to the connecting plate 12. The end of the wire rope 8 that is away from the connecting plate 12 passes over the tops of the first and second guide wheels 10, 11, and then extends downward to connect to a wire rope reel 13, which is bolted to the base 2. The wire rope reel 13 reels the wire rope 8 to drive the lifting seat 7 to rise, or the wire rope reel 13 releases the wire rope 8 and the lifting seat 7 descends due to its own gravity, and then the lifting seat 7 drives the cantilever 14 to rise or fall, thereby adjusting the height of the transmission line.

[0028] like Figure 2 and Figure 3 As shown, a fixing seat 15 is respectively fixed on the left and right sides of the upper end of the lifting seat 7 by bolts, and a first mounting cavity 16 is provided in the fixing seat 15. The side walls of the two first mounting cavities 16 that are close to each other are respectively provided with through holes 17 that transversely penetrate the outer wall of the corresponding fixing seat 15, and a cylindrical positioning pin 18 is laterally slidably installed in the through hole 17; positioning plates 19 that match the positioning pin 18 are respectively welded on the left and right sides of the tower body 1, and the positioning plate 19 is located on the inner side of the lifting seat 7, and one end of the positioning pin 18 is facing the corresponding positioning plate 19. The end of the positioning pin 18 close to the positioning plate 19 extends out of the outside of the first mounting cavity 16 and is provided with a protruding spherical surface 20. The positioning plate 19 is provided with an arc groove 21 for the end of the corresponding positioning pin 18 with the spherical surface 20 to be snapped into, and a plurality of arc grooves 21 are provided at evenly spaced vertical intervals.

[0029] A baffle 22 is integrally formed at one end of the locating pin 18 located in the first mounting cavity 16. The baffle 22 can prevent the locating pin 18 from completely separating from the first mounting cavity 16. A first spring 23 is provided between the side of the baffle 22 facing away from the locating pin 18 and the inner wall of the first mounting cavity 16 for pushing the locating pin 18 into the arc groove 21.

[0030] When the steel wire rope 8 pulls the lifting seat 7 up and down, the lifting seat 7 drives the fixed seat 15 and the positioning pin 18 to move up and down synchronously. When the lifting seat 7 drives the positioning pin 18 to move to align with an arc-shaped groove 21, the first spring 23 pushes the positioning pin 18 to move inward and causes the end of the positioning pin 18 provided with the spherical surface 20 to be stuck in the corresponding arc-shaped groove 21; when the lifting seat 7 continues to drive the positioning pin 18 to rise or fall, the inner wall of the arc-shaped groove 21 acts on the spherical surface 20 at the end of the positioning pin 18 to move the positioning pin 18 outward and disengage from the arc-shaped groove 21, so that when there is no block 29 to block it, the lifting seat 7 can be smoothly raised or lowered under the traction of the steel wire rope 8.

[0031] like Figure 3 As shown, a locking mechanism for preventing the positioning pin 18 from being separated from the arc groove 21 is provided on the fixing seat 15. The locking mechanism includes a movable column 24 integrally formed on the side of the baffle 22 away from the positioning pin 18. The movable column 24 is coaxially arranged with the positioning pin 18. A sliding cavity 25 for the movable column 24 to enter is provided on the side wall of the first mounting cavity 16 away from the through hole 17. A second mounting cavity 26 is provided in the fixing seat 15 above the sliding cavity 25. A metal plate 27 is installed in the second mounting cavity 26 to slide up and down along the radial direction of the movable column 24. Two guide rods 28 arranged opposite to each other on the left and right are fixedly installed in the second mounting cavity 26. The guide rods 28 extends vertically along the radial direction of the movable column 24, and the metal plate 27 is slidably installed on the two guide rods 28; a stopper 29 is welded to the bottom of the metal plate 27, and a connecting port 30 for the stopper 29 to enter is provided at the top of the sliding cavity 25, and a second spring 31 is sleeved on the guide rod 28 between the top of the metal plate 27 and the top wall of the second mounting cavity 26 for allowing the lower end of the stopper 29 to extend into the sliding cavity 25; when one end of the locating pin 18 is stuck in the arc-shaped groove 21, the thrust of the second spring 31 causes the lower end of the stopper 29 to extend into the sliding cavity 25, and the stopper 29 prevents the movable column 24 from moving in the direction away from the arc-shaped groove 21.

[0032] An electromagnet 32 ​​for attracting the metal plate 27 is fixedly mounted on the top wall of the second mounting cavity 26 by means of bolts. The electromagnet 32 ​​is located on a side of the metal plate 27 facing away from the stopper 29 .

[0033] Specifically, when it is necessary to adjust the height of the lifting seat 7 and the cantilever 14, the electromagnet 32 ​​is energized, the electromagnet 32 ​​attracts the metal plate 27 and moves it upward, and the metal plate 27 drives the stopper 29 to move upward out of the sliding cavity 25, and the blocking effect of the stopper 29 is lost. When the lifting seat 7 is raised or lowered, the positioning pin 18 can smoothly move outward and disengage from the arc groove 21; or after the lifting seat 7 and the cantilever 14 are adjusted to the required height and the positioning pin 18 is engaged in the arc groove 21 of the corresponding height, the electromagnet 32 ​​is de-energized, and then the second spring 31 pushes the metal plate 27 to move downward, and the metal plate 27 drives the stopper 29 to extend downward into the sliding cavity 25, and is blocked by the stopper 29 at the end of the movable column 24 away from the positioning pin 18, so that the positioning pin 18 and the movable column 24 cannot smoothly move outward in the direction away from the arc groove 21, thereby limiting the up and down movement of the lifting seat 7, so that the height of the lifting seat 7 and the cantilever 14 remains more stable.

[0034] Vertically extending guide rails 33 are fixedly mounted on the left side of the two left uprights 4 and on the right side of the two right uprights 4 via bolts. Guide wheels 34 matching the guide rails 33 are mounted on the inner sides of the left and right side walls of the lifting base 7. The guide wheels 34 are rotatably mounted on guide wheel supports, which are bolted to the lifting base 7. The cooperation between the guide wheels 34 and the guide rails 33 reduces the resistance to the vertical movement of the lifting base 7.

[0035] In this embodiment, a V-shaped groove 35 is formed around the outer circumference of the guide wheel 34 , and the guide rail 33 is a V-shaped guide rail. The guide rail 33 is consistent with the V-shaped groove 35 , thereby improving the stability of the combination of the guide wheel 34 and the guide rail 33 .

[0036] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A power supply line tower for an electrified railway contact network, characterized in that: The lifting base is fixedly mounted on the lifting base, and the lifting base is lifted and lowered by a steel wire rope. A cantilever for hanging a power transmission line is fixedly mounted on one side of the lifting base; a fixed base is fixedly mounted on the lifting base, a positioning pin is laterally slidably mounted on the fixed base, a positioning plate matching the positioning pin is fixedly mounted on the tower body, one end of the positioning pin faces the positioning plate, and an end of the positioning pin close to the positioning plate is provided with a protruding spherical surface, and an arc groove is provided on the positioning plate for one end of the positioning pin to be inserted into, and a plurality of arc grooves are evenly spaced vertically, and a first spring is provided on the fixed base for pushing the positioning pin into the arc groove, and a locking mechanism is also provided on the fixed base for preventing the positioning pin from escaping from the arc groove.

2. A power supply line tower for an electrified railway contact network according to claim 1, characterized in that: A first mounting cavity is provided in the fixing seat, and a through hole is provided on one side wall of the first mounting cavity, which laterally penetrates the outer wall of the fixing seat. The positioning pin is movably installed in the through hole, and one end of the positioning pin extends out of the first mounting cavity and is provided with the spherical surface. The other end of the positioning pin is fixedly installed with a baffle located in the first mounting cavity, and the first spring is provided between the side of the baffle facing away from the positioning pin and the inner wall of the first mounting cavity.

3. A power supply line tower for an electrified railway contact network according to claim 2, characterized in that: The locking mechanism includes a movable column fixedly mounted on a side of the baffle away from the positioning pin, the movable column is coaxially arranged with the positioning pin, a sliding cavity for the movable column to enter is provided on one side wall of the first mounting cavity, and a second mounting cavity is provided in the fixed seat located on the side of the sliding cavity, a metal plate is installed in the second mounting cavity along the radial sliding of the movable column, and a stopper is fixedly mounted on the side of the metal plate close to the sliding cavity, and a connecting port for the stopper to enter is provided on the side wall of the sliding cavity, and a second spring is provided between the metal plate and the inner wall of the second mounting cavity for allowing one end of the stopper to extend into the sliding cavity; when one end of the positioning pin is stuck in the arc groove, the thrust of the second spring causes one end of the stopper to extend into the sliding cavity, and the stopper prevents the movable column from moving in a direction away from the arc groove.

4. A power supply line tower for an electrified railway contact network according to claim 3, characterized in that: A guide rod extending radially along the movable column is fixedly installed in the second installation cavity, and the metal plate is slidably installed on the guide rod.

5. The power supply line tower for an electrified railway contact network according to claim 3, characterized in that: An electromagnet for adsorbing the metal plate is fixedly mounted on the inner wall of the second mounting cavity, and the electromagnet is located on a side of the metal plate away from the stop block.

6. A power supply line tower for an electrified railway contact network according to claim 3, characterized in that: Vertically extending guide rails are fixedly installed on opposite sides of the tower body, and guide wheels matching the guide rails are installed on the lifting seat.

7. A power supply line tower for an electrified railway contact network according to claim 6, characterized in that: A V-shaped groove is provided around the outer circumference of the guide wheel, and the guide rail is consistent with the V-shaped groove.

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