Portable electric soldering iron for railway

By designing an insulating sleeve and winding structure on the railway soldering iron, the cooling waiting problem caused by excessive temperature of the soldering iron is solved, the working efficiency and safety are improved, and the service life of the soldering iron is extended.

CN119549828AActive Publication Date: 2025-03-04ZHONGTIEJIAN ELECTRIC HUAJU GRP NO 4 ENG CO LTD
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Patent Information

Application Number
CN202510005209.5
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-01-02
Publication Date
2025-03-04
Estimated Expiration
2045-01-02

AI Technical Summary

Technical Problem

The existing railway soldering iron is too hot at the end of use and needs to wait for cooling, which leads to the risk of scalding accidents when the staff transfers their workplaces and affects work efficiency and construction progress.

Method used

A portable railway soldering iron is designed to block the soldering ends through an insulating sleeve, and a winding structure and support structure are adopted to allow the soldering iron to be directly retracted and transferred in a hot state to avoid waiting for cooling.

Benefits of technology

It effectively avoids waiting for cooling, improves the transfer efficiency of staff, reduces the risk of scald accidents, and extends the service life of the soldering iron, improving its portability and safety.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention provides a portable electric soldering iron for railways, which relates to the field of electric soldering irons and comprises an electric soldering iron holding handle, an electric soldering iron supporting inclined block, a heat insulation sleeve, a limiting connecting plate, a positioning connecting plate, a positioning connecting swivel and a wire winding box. The electric soldering iron supporting inclined blocks are located on the upper and lower sides of the electric soldering iron holding handle. The heat insulation sleeve sleeves the outer side of the electric soldering iron welding end; the limiting connecting plates are fixedly connected to the upper and lower sides of the heat-insulating sleeve; the positioning connecting plate is fixedly connected to the left end face of the electric soldering iron supporting inclined block. The positioning connecting rotating ring is rotationally connected to the right side of the electric soldering iron holding handle; the electric wire winding box is arranged on the right side of the electric soldering iron holding handle; the welding end of the electric soldering iron can be shielded, the electric soldering iron can be directly put away to be transferred to a working place, the situation that the electric soldering iron needs to be cooled is avoided, a large amount of time is saved, and the problem that when the temperature of the electric soldering iron is too high, the electric soldering iron is inconvenient to put into a tool box or a knapsack is solved. And long time is consumed when the electric soldering iron is cooled.
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Description

Technical Field

[0001] The invention relates to the technical field of electric soldering irons, in particular to a portable electric soldering iron for railways. Background Art

[0002] Railway maintenance or construction usually needs to be carried out in multiple locations, and workers need to frequently carry soldering irons to move locations. Therefore, most of the existing railway soldering irons are relatively portable. When soldering, first polish the pad and the workpiece to be welded with fine sandpaper, apply flux, then use the soldering iron tip to dip a proper amount of solder and touch the soldering point. After the solder on the soldering point is completely melted and immerses the contact point between the workpiece to be welded and the pad, the soldering iron tip is gently lifted up along the workpiece to be welded to leave the soldering point, and the workpiece to be welded can be released after the solder solidifies.

[0003] However, when the soldering iron is finished using, its temperature is too high to be immediately put into a tool box or backpack. Therefore, before moving to another work location, the soldering iron needs to be placed on a soldering iron rack and wait for it to cool down completely. During the waiting process, workers may accidentally touch the soldering iron due to negligence, urgent tasks or other reasons, resulting in scalding accidents. This poses certain safety hazards and affects the safety of the use of the soldering iron. At the same time, it takes a long time to wait for the soldering iron to cool down, which affects the transfer efficiency of the workers and further affects the maintenance or construction progress of the railway. Summary of the invention

[0004] In view of this, the present invention provides a portable railway soldering iron, which can shield the welding end of the soldering iron, and can directly put away the soldering iron for transfer to a work place, effectively avoiding the need to wait for the soldering iron to cool down, saving a lot of time, improving the transfer efficiency of the staff, and thus ensuring the maintenance or construction progress of the railway, and at the same time effectively avoiding the situation that the staff is in direct contact with the soldering end, avoiding the occurrence of scalding accidents, and can ensure that the soldering end is always facing upward when the soldering iron is put down, effectively avoiding the situation that the soldering end is damaged by collision with the ground, ensuring the service life of the soldering iron, and also avoiding the inconvenience of carrying a soldering iron stand, effectively improving the convenience of use of the soldering iron, avoiding the situation that the bending angle of the end of the power cord is too large to cause damage to the insulation skin, avoiding the situation that the power cord leaks, reducing safety hazards, ensuring the safety of use of the soldering iron, avoiding the inconvenience of frequently arranging the power cord when carrying the soldering iron to transfer to a work place, reducing the operation steps, saving a lot of time, and effectively improving the portability of the soldering iron.

[0005] The present invention provides a portable railway electric soldering iron, which specifically comprises an electric soldering iron gripping handle, an electric soldering iron supporting inclined block, a heat insulating sleeve, a limiting connecting plate, a positioning connecting plate, a positioning structure, a supporting structure, a positioning connecting swivel, a winding structure and a wire winding box; the electric soldering iron supporting inclined blocks are provided with two, and the two electric soldering iron supporting inclined blocks are respectively located at the upper and lower sides of the electric soldering iron gripping handle; the heat insulating sleeve is sleeved on the outer side of the electric soldering iron welding end, and the heat insulating sleeve is a cylindrical structure; the limiting connecting plates are provided with two, and the two limiting connecting plates are provided with two The connecting plates are respectively fixedly connected to the upper and lower sides of the thermal insulation sleeve; two positioning connecting plates are provided, and the two positioning connecting plates are respectively fixedly connected to the left end surfaces of the two soldering iron supporting oblique blocks; the positioning structure is arranged on the outside of the thermal insulation sleeve; the supporting structure is arranged on the left side of the soldering iron gripping handle; the positioning connecting swivel is rotatably connected to the right side of the soldering iron gripping handle; the wire winding box is arranged on the right side of the soldering iron gripping handle; the winding structure is arranged on the inner side of the wire winding box.

[0006] Furthermore, the support structure includes a position fixing connecting frame and a limiting support oblique block; the position fixing connecting frame is a U-shaped structure, and four position fixing connecting frames are provided, and the four position fixing connecting frames are respectively fixedly connected to the front and rear sides of the two electric soldering iron support oblique blocks; four position limiting support oblique blocks are provided, and the four position limiting support oblique blocks are respectively fixedly connected to the outer sides of the four position fixing connecting frames.

[0007] Furthermore, the support structure also includes a positioning connecting plate and a heat dissipation net; there are four positioning connecting plates, which are respectively fixedly connected to the front and rear sides of the two soldering iron support oblique blocks, and the four positioning connecting plates are all fixedly connected to the left side of the soldering iron gripping handle by bolts; there are multiple heat dissipation nets, and a circular array of the multiple heat dissipation nets is fixedly connected to the outside of the thermal insulation sleeve.

[0008] Furthermore, the positioning structure includes a sliding operation plate and a compressed inclined block; two sliding operation plates are provided, and the two sliding operation plates are respectively slidably connected to the inner sides of the two positioning connecting plates; two compressed inclined blocks are provided, and the two compressed inclined blocks are respectively fixedly connected to the left sides of the two sliding operation plates, and the two compressed inclined blocks are respectively slidably connected to the two positioning connecting plates up and down.

[0009] Furthermore, the positioning structure also includes a position fixing groove and a reset elastic member; the position fixing groove is an L-shaped structure, and two position fixing grooves are provided. The two position fixing grooves are respectively opened on the outer sides of the two limiting connecting plates, and the two position fixing grooves are respectively plugged into the two positioning connecting plates; there are multiple reset elastic members, and the two sliding operation plates are elastically connected to the two positioning connecting plates through multiple reset elastic members.

[0010] Furthermore, the winding structure includes a power connection line, a limit partition plate and a positioning winding shaft; the power connection line is arranged on the right side of the soldering iron gripping handle; two limit partition plates are arranged, and the two limit partition plates are respectively fixedly connected to the upper and lower sides of the wire winding box; the positioning winding shaft is rotatably connected to the middle part of the wire winding box, the positioning winding shaft is rotatably connected to the two limit partition plates, the middle part of the power connection line is bonded to the middle part of the soldering iron gripping handle, and the two ends of the power connection line are wound around the outside of the positioning winding shaft in opposite rotation directions.

[0011] Furthermore, the winding structure also includes a direction limiting ratchet and a direction limiting pawl; the direction limiting ratchet is fixedly connected to the upper part of the positioning winding shaft; the direction limiting pawl is hinged to the upper part of the upper limiting partition plate through a torsion spring, and the direction limiting pawl and the direction limiting ratchet together constitute a ratchet transmission mechanism.

[0012] Furthermore, the winding structure also includes a reset spiral spring and a positioning threaded ring; the positioning winding shaft is elastically connected to the wire winding box through the reset spiral spring; the positioning threaded ring is opened on the left side of the wire winding box, and the positioning threaded ring is threadedly connected to the positioning connecting swivel.

[0013] Beneficial Effects The present invention shields the welding end of the electric soldering iron by the heat-insulating sleeve, so that the electric soldering iron can be directly put away for transfer to the work place, effectively avoiding the need to wait for the electric soldering iron to cool down, saving a lot of time, improving the transfer efficiency of the staff, and thus ensuring the maintenance or construction progress of the railway, and at the same time effectively avoiding the situation that the staff is in direct contact with the welding end, avoiding the occurrence of scalding accidents, ensuring the normal heat dissipation of the electric soldering iron by the heat discharge net, supporting the electric soldering iron by the electric soldering iron support inclined block and the limit support inclined block, ensuring that the welding end is always facing upward, effectively avoiding the situation that the welding end collides with the ground when the electric soldering iron is placed and causing damage, and ensuring the service life of the electric soldering iron. The electric soldering iron is easy to use and can be easily used with a soldering iron holder. The electric soldering iron holder is convenient to use and can be easily used with a soldering iron holder. The electric soldering iron holder is easy to use and can be easily used with a soldering iron holder. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solution of the embodiment of the present invention, the drawings of the embodiment are briefly introduced below.

[0015] The drawings described below are only related to some embodiments of the present invention, but are not intended to limit the present invention.

[0016] In the attached picture: Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0017] Figure 2 It is a schematic diagram of the positions of the electric soldering iron supporting inclined block and the heat insulating sleeve of the present invention.

[0018] Figure 3 It is a schematic diagram of the position of the positioning connection swivel of the present invention.

[0019] Figure 4 It is a schematic diagram of the disassembled structure of the limit connecting plate, the positioning connecting plate and the sliding operation plate of the present invention.

[0020] Figure 5 It is a schematic diagram of the position of the resetting elastic member of the present invention.

[0021] Figure 6 The present invention is a schematic diagram of the positions of the electric soldering iron grip handle and the wire winding box.

[0022] Figure 7 It is a schematic diagram of the matching relationship between the direction limiting ratchet and the direction limiting pawl of the present invention.

[0023] Figure 8 It is a schematic diagram of the position of the return scroll spring of the present invention.

[0024] Reference numerals list 1. Electric soldering iron grip handle; 101. Power connection line; 2. Electric soldering iron support bevel block; 201. Position fixing connection frame; 202. Limit support bevel block; 203. Positioning connection plate; 3. Heat insulation sleeve; 301. Heat discharge net; 4. Limit connection plate; 401. Position fixing groove; 5. Positioning connection plate; 501. Sliding operation plate; 502. Pressure bevel block; 503. Reset elastic member; 6. Positioning connection swivel; 7. Wire winding box; 701. Limit partition plate; 702. Positioning winding shaft; 703. Direction limiting ratchet; 704. Direction limiting pawl; 705. Reset volute spring; 706. Positioning threaded ring. DETAILED DESCRIPTION

[0025] Embodiment 1: Please refer to Figures 1 to 5 As shown: The present invention provides a portable electric soldering iron for railway, comprising an electric soldering iron gripping handle 1, an electric soldering iron supporting inclined block 2, a heat insulating sleeve 3, a limiting connecting plate 4, a positioning connecting plate 5, a positioning structure and a supporting structure; the electric soldering iron supporting inclined blocks 2 are provided with two, and the two electric soldering iron supporting inclined blocks 2 are respectively located on the upper and lower sides of the electric soldering iron gripping handle 1; the heat insulating sleeve 3 is sleeved on the outer side of the welding end of the electric soldering iron, and the heat insulating sleeve 3 is a cylindrical structure; there are two limiting connecting plates 4, and the two limiting connecting plates 4 are respectively fixedly connected to the upper and lower sides of the heat insulating sleeve 3; there are two positioning connecting plates 5, and the two positioning connecting plates 5 are respectively fixedly connected to the left end surfaces of the two electric soldering iron supporting inclined blocks 2; the positioning structure is arranged on the outer side of the heat insulating sleeve 3; and the supporting structure is arranged on the left side of the electric soldering iron gripping handle 1.

[0026] Among them, the supporting structure includes a position fixing connecting frame 201 and a limiting supporting inclined block 202; the position fixing connecting frame 201 is a U-shaped structure, and there are four position fixing connecting frames 201, and the four position fixing connecting frames 201 are respectively fixedly connected to the front and rear sides of the two electric soldering iron supporting inclined blocks 2; there are four limiting supporting inclined blocks 202, and the four limiting supporting inclined blocks 202 are respectively fixedly connected to the outer sides of the four position fixing connecting frames 201.

[0027] Among them, the support structure further includes positioning connection pieces 203 and heat discharge meshes 301; there are four positioning connection pieces 203, and the four positioning connection pieces 203 are respectively fixedly connected to the front and rear sides of the two soldering iron support inclined blocks 2, and the four positioning connection pieces 203 are all fixedly connected to the left side of the soldering iron holding handle 1 by bolts; there are multiple heat discharge meshes 301, and the multiple heat discharge meshes 301 are fixedly connected to the outer side of the heat insulation sleeve 3 in a circumferential array.

[0028] Among them, the positioning structure includes a sliding operation plate 501 and a pressed inclined block 502; there are two sliding operation plates 501, and the two sliding operation plates 501 are respectively slidably connected up and down inside the two positioning connection plates 5; there are two pressed inclined blocks 502, and the two pressed inclined blocks 502 are respectively fixedly connected to the left sides of the two sliding operation plates 501, and the two pressed inclined blocks 502 are respectively slidably connected up and down with the two positioning connection plates 5.

[0029] Among them, the positioning structure further includes a position fixing groove 401 and a reset elastic member 503; the position fixing groove 401 is an L-shaped structure, there are two position fixing grooves 401, and the two position fixing grooves 401 are respectively opened on the outer sides of the two limit connection plates 4, and the two position fixing grooves 401 are respectively inserted into the two positioning connection plates 5; there are multiple reset elastic members 503, and the two sliding operation plates 501 are respectively elastically connected to the two positioning connection plates 5 through the multiple reset elastic members 503.

[0030] Specific usage and functions of this embodiment: Use bolts to fix the positioning connection piece 203 and the soldering iron support inclined block 2 to the left end of the soldering iron holding handle 1. The position fixing connection frame 201 is in a U shape and will not interfere with the screwdriver. When it is necessary to temporarily place the soldering iron on the ground, the inclined surfaces of the soldering iron support inclined block 2 or the limit support inclined block 202 will cause the soldering end of the soldering iron to tilt upward, making the soldering iron holding handle 1 contact the ground. After the work location needs to be transferred or the soldering iron is no longer in use, put the heat insulation sleeve 3 on the outside of the soldering end. At this time, the limit connection plate 4 contacts the positioning connection plate 5. Continuing to push the heat insulation sleeve 3 can make the limit connection plate 4 squeeze the pressed inclined block 502. At this time, the pressed inclined block 502 will drive the sliding operation plate 501 to slide along the positioning connection plate 5 and compress the reset elastic member 503. When the pressed inclined block 502 moves to the end of the position fixing groove 401, the pressed inclined block 502 is no longer squeezed. At this time, the restoring force of the reset elastic member 503 will push the pressed inclined block 502 to reset and get stuck inside the position fixing groove 401 to fix the position of the heat insulation sleeve 3. At this time, the heat of the soldering iron will be discharged from the heat discharge mesh 301 until the soldering iron is completely cooled. When it is necessary to remove the heat insulation sleeve 3, press the two sliding operation plates 501 simultaneously, so that the sliding operation plate 501 drives the pressed inclined block 502 to retract into the positioning connection plate 5, and then the positioning connection plate 5 can be pulled out from the position fixing groove 401 to complete the removal of the heat insulation sleeve 3.

[0031] Embodiment 2: like Figures 6 to 8 As shown: On the basis of embodiment one, it also includes a positioning connection swivel 6, a winding structure and a wire winding box 7; the positioning connection swivel 6 is rotatably connected to the right side of the soldering iron gripping handle 1; the wire winding box 7 is arranged on the right side of the soldering iron gripping handle 1; the winding structure is arranged on the inner side of the wire winding box 7.

[0032] Among them, the winding structure includes a power connection line 101, a limiting partition plate 701 and a positioning winding shaft 702; the power connection line 101 is arranged on the right side of the electric soldering iron gripping handle 1; there are two limiting partition plates 701, and the two limiting partition plates 701 are respectively fixedly connected to the upper and lower sides of the wire winding box 7; the positioning winding shaft 702 is rotatably connected to the middle part of the wire winding box 7, the positioning winding shaft 702 is rotatably connected to the two limiting partition plates 701, the middle part of the power connection line 101 is bonded to the middle part of the electric soldering iron gripping handle 1, and the two ends of the power connection line 101 are wound on the outside of the positioning winding shaft 702 in opposite rotation directions.

[0033] Among them, the winding structure also includes a direction limiting ratchet 703 and a direction limiting pawl 704; the direction limiting ratchet 703 is fixedly connected to the upper part of the positioning winding shaft 702; the direction limiting pawl 704 is hinged to the upper part of the upper limiting partition plate 701 through a torsion spring, and the direction limiting pawl 704 and the direction limiting ratchet 703 together constitute a ratchet transmission mechanism.

[0034] Among them, the winding structure also includes a reset spiral spring 705 and a positioning threaded ring 706; the positioning winding shaft 702 is elastically connected to the wire winding box 7 through the reset spiral spring 705; the positioning threaded ring 706 is opened on the left side of the wire winding box 7, and the positioning threaded ring 706 is threadedly connected to the positioning connecting swivel 6.

[0035] The specific usage and function of this embodiment are as follows: when using the electric soldering iron, hold the wire winding box 7 and rotate the positioning connection rotating ring 6 to move the positioning connection rotating ring 6 out of the positioning threaded ring 706. At this time, the wire winding box 7 can be separated from the electric soldering iron gripping handle 1. At this time, when the electric soldering iron is pulled, the power connection line 101 will be pulled out. During the process of pulling out the power connection line 101, the positioning winding shaft 702 will be driven to rotate and tighten the reset scroll spring 705. At this time, the direction limiting pawl 704 will limit the sliding of the outer side of the ratchet wheel 703 in the direction of rotation. When the power connection line 101 is no longer pulled, the direction limiting pawl 704 will jam the direction limiting ratchet 703, so that the reset spiral spring 705 cannot drive the positioning winding shaft 702 to reset. After use, the direction limiting pawl 704 is pushed so that the direction limiting pawl 704 no longer contacts the direction limiting ratchet 703. At this time, the reset spiral spring 705 can drive the positioning winding shaft 702 to reset so that the power connection line 101 is wound, and the limiting partition plate 701 can limit the upper and lower sides of the power connection line 101.

[0036] In this article, there are a few points to note: 1. The drawings of the embodiments of the present disclosure only involve structures related to the embodiments of the present disclosure, and other structures may refer to general designs.

[0037] 2. In the absence of conflict, the embodiments of the present disclosure and the features therein may be combined with each other to obtain new embodiments.

[0038] The above are only specific embodiments of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present disclosure, which should be included in the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be based on the protection scope of the claims.

Claims

1. A portable electric soldering iron for railway use, comprising an electric soldering iron gripping handle (1), an electric soldering iron supporting inclined block (2), a heat insulating sleeve (3), a limiting connecting plate (4), a positioning connecting plate (5), a positioning structure, a supporting structure, a positioning connecting swivel (6), a winding structure and a wire winding box (7); two electric soldering iron supporting inclined blocks (2) are provided, and the two electric soldering iron supporting inclined blocks (2) are respectively located on the upper and lower sides of the electric soldering iron gripping handle (1); characterized in that: The heat-insulating sleeve (3) is sleeved on the outer side of the soldering end of the electric soldering iron, and the heat-insulating sleeve (3) is a cylindrical structure; two limit connecting plates (4) are provided, and the two limit connecting plates (4) are respectively fixedly connected to the upper and lower sides of the heat-insulating sleeve (3); two positioning connecting plates (5) are provided, and the two positioning connecting plates (5) are respectively fixedly connected to the left end surfaces of the two electric soldering iron supporting inclined blocks (2); the positioning structure is provided on the outer side of the heat-insulating sleeve (3); the supporting structure is provided on the left side of the electric soldering iron gripping handle (1); the positioning connecting swivel (6) is rotatably connected to the right side of the electric soldering iron gripping handle (1); the wire winding box (7) is provided on the right side of the electric soldering iron gripping handle (1); and the winding structure is provided on the inner side of the wire winding box (7).

2. The portable railway soldering iron as claimed in claim 1, characterized in that: The support structure comprises a position fixing connection frame (201) and a position limiting support oblique block (202); the position fixing connection frame (201) is a U-shaped structure, four position fixing connection frames (201) are provided, and the four position fixing connection frames (201) are respectively fixedly connected to the front and rear sides of the two electric soldering iron support oblique blocks (2); four position limiting support oblique blocks (202) are provided, and the four position limiting support oblique blocks (202) are respectively fixedly connected to the outsides of the four position fixing connection frames (201).

3. The portable railway soldering iron as claimed in claim 2, characterized in that: The support structure further comprises a positioning connecting piece (203) and a heat dissipation net (301); four positioning connecting pieces (203) are provided, and the four positioning connecting pieces (203) are respectively fixedly connected to the front and rear sides of the two electric soldering iron support inclined blocks (2), and the four positioning connecting pieces (203) are all fixedly connected to the left side of the electric soldering iron gripping handle (1) by bolts; a plurality of heat dissipation nets (301) are provided, and the plurality of heat dissipation nets (301) are fixedly connected in a circular array to the outside of the heat insulating sleeve (3).

4. The portable railway soldering iron as claimed in claim 1, characterized in that: The positioning structure comprises a sliding operation plate (501) and a pressure-bearing inclined block (502); two sliding operation plates (501) are provided, and the two sliding operation plates (501) are respectively slidably connected up and down on the inner sides of the two positioning connection plates (5); two pressure-bearing inclined blocks (502) are provided, and the two pressure-bearing inclined blocks (502) are respectively fixedly connected to the left sides of the two sliding operation plates (501), and the two pressure-bearing inclined blocks (502) are respectively slidably connected up and down with the two positioning connection plates (5).

5. The portable railway soldering iron as claimed in claim 4, characterized in that: The positioning structure further comprises a position fixing groove (401) and a reset elastic member (503); the position fixing groove (401) is an L-shaped structure, two position fixing grooves (401) are provided, the two position fixing grooves (401) are respectively opened on the outside of the two limiting connecting plates (4), and the two position fixing grooves (401) are respectively plugged with the two positioning connecting plates (5); a plurality of reset elastic members (503) are provided, and the two sliding operation plates (501) are respectively elastically connected with the two positioning connecting plates (5) via the plurality of reset elastic members (503).

6. The portable railway soldering iron as claimed in claim 1, characterized in that: The winding structure comprises a power connection line (101), a limiting partition plate (701) and a positioning winding shaft (702); the power connection line (101) is arranged on the right side of the electric soldering iron gripping handle (1); two limiting partition plates (701) are arranged, and the two limiting partition plates (701) are respectively fixedly connected to the upper and lower sides of the wire winding box (7); the positioning winding shaft (702) is rotatably connected to the middle part of the wire winding box (7), the positioning winding shaft (702) is rotatably connected to the two limiting partition plates (701), the middle part of the power connection line (101) is bonded to the middle part of the electric soldering iron gripping handle (1), and the two ends of the power connection line (101) are wound around the outer side of the positioning winding shaft (702) in opposite rotation directions.

7. The portable railway soldering iron as claimed in claim 6, characterized in that: The winding structure further comprises a direction limiting ratchet (703) and a direction limiting pawl (704); the direction limiting ratchet (703) is fixedly connected to the upper part of the positioning winding shaft (702); the direction limiting pawl (704) is hinged to the upper part of the upper limiting partition plate (701) via a torsion spring, and the direction limiting pawl (704) and the direction limiting ratchet (703) together form a ratchet transmission mechanism.

8. The portable railway soldering iron as claimed in claim 7, characterized in that: The winding structure further comprises a reset vortex spring (705) and a positioning threaded ring (706); the positioning winding shaft (702) is elastically connected to the wire winding box (7) via the reset vortex spring (705); the positioning threaded ring (706) is arranged on the left side of the wire winding box (7), and the positioning threaded ring (706) is threadedly connected to the positioning connection rotating ring (6).

Citation Information

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