CN116683353A - Combined type anti-slip paying-off pulley - Google Patents
Combined type anti-slip paying-off pulley Download PDFInfo
- Publication number
- CN116683353A CN116683353A CN202310945762.8A CN202310945762A CN116683353A CN 116683353 A CN116683353 A CN 116683353A CN 202310945762 A CN202310945762 A CN 202310945762A CN 116683353 A CN116683353 A CN 116683353A
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- China
- Prior art keywords
- wire
- loop bar
- slip
- telescopic rod
- paying
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- 239000002131 composite material Substances 0.000 claims abstract description 24
- 239000002184 metal Substances 0.000 claims description 5
- 230000000903 blocking effect Effects 0.000 claims description 3
- 210000001503 joint Anatomy 0.000 claims description 2
- 238000010276 construction Methods 0.000 abstract description 11
- 238000000034 method Methods 0.000 abstract description 6
- 238000009434 installation Methods 0.000 abstract description 2
- 230000005540 biological transmission Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
- H02G1/02—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for overhead lines or cables
- H02G1/04—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for overhead lines or cables for mounting or stretching
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- Mutual Connection Of Rods And Tubes (AREA)
Abstract
The application discloses a composite anti-slip paying-off pulley, which belongs to the technical field of overhead line installation and comprises the following components: the utility model provides a pipe, pipe upper portion evenly is provided with a plurality of lockwire wheels that are used for restricting the wire to retract along circumference, and the middle part and the lower part of pipe evenly are provided with wire limiting pulley along circumference respectively, and wire limiting pulley includes telescopic link and symmetry setting at the leading wheel of the terminal both sides of telescopic link, and the one end and the pipe fixed connection of leading wheel are kept away from to the telescopic link, and are provided with reset spring in the telescopic link. The application can effectively prevent the wire from falling off in the paying-off process, and can inhibit the wire from retracting, thereby ensuring the safe and stable running of the wire-erecting construction.
Description
Technical Field
The application relates to the technical field of overhead line installation, in particular to a composite anti-slip paying-off pulley.
Background
At present, in the construction of newly-built line overhead lines, a wire is generally connected with a transmission tower temporarily by using a paying-off pulley, and the method is to place the wire in a fixed pulley on the paying-off pulley, but in the paying-off and tightening processes, particularly when heavy wind is accompanied, the wire is easy to fall off from the fixed pulley, so that construction is interrupted, inconvenience and even risks are brought to the overhead lines, and therefore, the application provides the composite anti-slip paying-off pulley.
Disclosure of Invention
The embodiment of the application provides a composite anti-slip paying-off pulley, which can effectively prevent a wire from falling off in a paying-off process, and can inhibit the wire from retracting, so that the safe and stable running of the wire-erecting construction is ensured.
In view of this, the present application provides a composite anti-slip paying-off tackle, comprising: a round tube;
a plurality of wire locking wheels for limiting the retraction of the wire are uniformly arranged on the upper part of the circular tube along the circumferential direction;
the middle part and the lower part of the circular tube are respectively and uniformly provided with a wire limiting pulley along the circumferential direction;
the wire limiting pulley comprises a telescopic rod and guide wheels symmetrically arranged at two sides of the tail end of the telescopic rod;
one end of the telescopic rod, which is far away from the guide wheel, is fixedly connected with the round tube, and a reset spring is arranged in the telescopic rod.
Optionally, a plurality of reserved square holes for the wire locking wheel to extend into the circular tube are uniformly formed in the upper part of the circular tube along the circumferential direction;
an outer ring fixing piece for installing a plurality of locking wire wheels in series is fixed on the outer side of the circular tube;
a reserved round hole is formed in the wire locking wheel, and the wire locking wheel is rotatably arranged on the outer ring fixing piece through the reserved round hole;
a first spring piece for enabling the wire locking wheel to be tightly attached to the outer wall of the wire is arranged on the inner wall of the reserved round hole;
the first spring piece is abutted with the outer ring fixing piece.
Optionally, the outer ring fixing piece is of a regular polygon structure composed of a plurality of outer ring rods;
the regular polygon structure is fixedly connected with the round tube through a plurality of wedge blocks.
Optionally, the wire locking wheel is in a disc-shaped structure;
the periphery of the disc-shaped structure is uniformly provided with teeth with trapezoidal sections.
Optionally, the telescopic rod comprises a first loop bar, a second loop bar, a third loop bar and a fourth loop bar which are sleeved in sequence;
the diameters of the first loop bar, the second loop bar, the third loop bar and the fourth loop bar decrease in sequence;
the first loop bar is fixedly connected with the round tube;
the guide wheels are symmetrically arranged at two sides of the tail end of the fourth loop bar;
one end of the return spring is connected with the inner wall of the first loop bar, and the other end of the return spring penetrates through the second loop bar and the third loop bar in sequence and then is connected with the inner wall of the fourth loop bar.
Optionally, a second spring piece matched with the telescopic rod is arranged on the inner side of the circular tube;
one end of the second spring piece is connected with the inner wall of the circular tube;
rectangular holes are formed in the second spring piece along the length direction;
the width of the rectangular hole is equal to the diameter of the tail end of the telescopic rod;
the tail end of the telescopic rod stretches into the rectangular hole and is connected with the rectangular hole in a sliding manner;
limiting pieces for blocking the second spring piece are symmetrically arranged on two sides of the tail end of the telescopic rod;
the telescopic rod is in butt joint with the second spring piece through the limiting piece.
Optionally, the second spring piece is an arc-shaped metal piece.
Optionally, two sides of the tail end of the telescopic rod are respectively connected with the guide wheel through a third spring piece.
Optionally, the guide wheel includes spacing pivot and rotates the setting and be in spacing epaxial rotatory face.
Optionally, a flaring structure is arranged on the end face of the round tube.
From the above technical solutions, the embodiment of the present application has the following advantages: the composite anti-slip paying-off pulley is provided with the plurality of wire locking wheels uniformly along the circumferential direction on the upper part of the circular tube, so that the phenomenon that the wires fall off and retract in the paying-off process can be effectively avoided, meanwhile, the wire limiting pulleys are uniformly arranged in the circumferential direction on the middle part and the lower part of the circular tube respectively, and the wire limiting pulleys are used for tightly adhering to the outer wall of the wire to limit the lateral movement of the wire, so that paying-off and wire tightening work can be smoothly carried out, and the power transmission line wire-erecting and wire tightening construction is safer and more reliable.
Drawings
FIG. 1 is a schematic view of a composite anti-slip paying-off tackle according to an embodiment of the present application;
FIG. 2 is a schematic structural view of a round tube according to an embodiment of the present application;
FIG. 3 is a schematic view of an outer ring fastener according to an embodiment of the present application;
FIG. 4 is a schematic diagram of a wire locking wheel according to an embodiment of the present application;
FIG. 5 is a schematic diagram of a connection structure between a wire limiting pulley and a second spring plate according to an embodiment of the present application;
FIG. 6 is a cross-sectional view of a wire containment vessel in accordance with an embodiment of the present application;
fig. 7 is a schematic diagram illustrating the disassembly of the wire limiting pulley according to the embodiment of the present application;
FIG. 8 is a schematic view of a fourth loop bar according to an embodiment of the present application;
FIG. 9 is a schematic view of a guide wheel according to an embodiment of the present application;
FIG. 10 is a schematic view of a limiting shaft according to an embodiment of the present application;
FIG. 11 is a schematic view of a second spring plate according to an embodiment of the present application;
wherein, the reference numerals are as follows:
the wire-locking device comprises a 1-round tube, a 2-wire-locking wheel, a 3-outer ring fixing piece, a 4-wire limiting pulley, a 5-flaring structure, a 6-reserved square hole, a 7-fixing hole, an 8-outer ring rod, a 9-wedge block, a 10-reserved round hole, an 11-first spring piece, a 12-first sleeve rod, a 13-second sleeve rod, a 14-third sleeve rod, a 15-fourth sleeve rod, a 16-guide wheel, a 17-second spring piece, a 18-reset spring, a 19-third spring piece, a 20-limiting piece, a 21-limiting rotating shaft and a 22-rotating surface.
Detailed Description
In order to make the present application better understood by those skilled in the art, the following description will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the accompanying drawings, and it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
In the description of the present application, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Unless specifically stated or limited otherwise, the terms "mounted," "connected," and "coupled" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present application will be understood in specific cases by those of ordinary skill in the art.
The present application provides an embodiment of a composite anti-slip paying-off tackle, and particularly, please refer to fig. 1 and 6.
The composite anti-slip paying-off tackle in this embodiment includes: the utility model provides a pipe 1, pipe 1 upper portion evenly is provided with a plurality of lockwire wheel 2 that are used for restricting the wire and retract along circumference, and the middle part and the lower part of pipe 1 evenly are provided with wire limiting pulley 4 along circumference respectively, and wire limiting pulley 4 includes telescopic link and symmetry setting in the leading wheel 16 of the terminal both sides of telescopic link, and the one end and the pipe 1 fixed connection of leading wheel 16 are kept away from to the telescopic link, and are provided with reset spring 18 in the telescopic link.
It should be noted that: this compound anti-slip unwrapping wire coaster evenly is provided with a plurality of lockwire wheels 2 through along circumference on pipe 1 upper portion, can effectively avoid the wire to take place to drop and the phenomenon of retracting at unwrapping wire in-process, simultaneously, through evenly being provided with wire spacing pulley 4 along circumference respectively in the middle part and the lower part of pipe 1, utilize wire spacing pulley 4 to hug closely the wire outer wall and restrict the side direction removal of wire, so, alright implement unwrapping wire smoothly, tight line work for transmission line overhead line, tight line construction are safer, reliable.
The above is an embodiment one of the composite anti-slip paying-off tackle provided by the embodiment of the present application, and the following is an embodiment two of the composite anti-slip paying-off tackle provided by the embodiment of the present application, refer to fig. 1 to 11 specifically.
The composite anti-slip paying-off tackle in this embodiment includes: the round tube 1, the round tube 1 can be made of metal; the utility model provides a pipe 1 upper portion evenly is provided with a plurality of locking wire wheels 2 that are used for restricting the wire to retract along circumference, the middle part and the lower part of pipe 1 evenly are provided with wire limiting pulley 4 along circumference respectively, wire limiting pulley 4 includes telescopic link and symmetry setting up the leading wheel 16 in the terminal both sides of telescopic link, the one end and the pipe 1 fixed connection of leading wheel 16 are kept away from to the telescopic link, and be provided with reset spring 18 in the telescopic link, through setting up the telescopic link to be provided with reset spring 18 in the telescopic link, make the device can be applicable to the wire of arbitrary cross-section. In this embodiment, 10 wire limiting pulleys 4 are uniformly arranged in the circumferential direction at the middle and lower parts of the circular tube 1, respectively.
It should be noted that: according to the application, the outer wall of the round tube type anti-slip paying-off pulley is used for replacing the paying-off pulley which adopts the fixed pulley to carry out the construction work of the power transmission line wire-erecting and wire-tightening, so that the phenomena that the wires easily fall off from the paying-off pulley and the wires retract in the construction are avoided, and the construction of the power transmission line wire-erecting and wire-tightening is safer.
As shown in fig. 1, 2 and 4, a plurality of reserved square holes 6 for the wire locking wheel 2 to extend into the circular tube 1 are uniformly formed in the upper part of the circular tube 1 along the circumferential direction, and the wire locking wheel 2 is arranged in the reserved square holes 6; an outer ring fixing piece 3 for installing a plurality of wire locking wheels 2 in series is fixed on the outer side of the circular tube 1, reserved circular holes 10 are formed in the wire locking wheels 2, and the wire locking wheels 2 are rotatably arranged on the outer ring fixing piece 3 through the reserved circular holes 10; the inner wall of the reserved round hole 10 is provided with a first spring piece 11 for enabling the wire locking wheel 2 to be tightly attached to the outer wall of the wire, and specifically, the section of the first spring piece 11 is rectangular; the first spring piece 11 abuts against the outer ring holder 3. In the present embodiment, the number of the reserved square holes 6 is 12.
As shown in fig. 3, the outer ring fixing member 3 has a regular polygonal structure composed of a plurality of outer ring rods 8, and the regular polygonal structure is fixedly connected with the circular tube 1 through a plurality of wedge blocks 9. In this embodiment, the number of the outer ring rods 8 is 12, the outer ring fixing members 3 are of a regular dodecagon structure, the number of the wedge blocks 9 is 12, the wedge blocks 9 are uniformly distributed on the inner side of the regular dodecagon structure, one end of each wedge block 9 is fixedly connected with the regular dodecagon structure, and the other end of each wedge block 9 is fixedly connected with the round tube 1.
As shown in fig. 4, the wire locking wheel 2 has a disc-shaped structure, and teeth with trapezoidal cross sections are uniformly arranged on the periphery of the disc-shaped structure.
As shown in fig. 6 and 7, the telescopic rod includes a first loop bar 12, a second loop bar 13, a third loop bar 14 and a fourth loop bar 15 that are sequentially sleeved, the diameters of the first loop bar 12, the second loop bar 13, the third loop bar 14 and the fourth loop bar 15 decrease in sequence, the first loop bar 12 is fixedly connected with the round tube 1, the guide wheels 16 are symmetrically arranged on two sides of the tail end of the fourth loop bar 15, one end of the return spring 18 is connected with the inner wall of the first loop bar 12, the other end of the return spring sequentially penetrates through the second loop bar 13 and the third loop bar 14 and then is connected with the inner wall of the fourth loop bar 15, and after the telescopic rod is compressed, the telescopic rod can return under the action of the return spring 18. Specifically, as shown in fig. 2, the middle part and the lower part of the circular tube 1 are respectively and uniformly provided with fixing holes 7 along the circumferential direction, the number of the fixing holes 7 is equal to that of the wire limiting pulleys 4, and the fixing holes are in one-to-one correspondence with the wire limiting pulleys 4, and the first loop bars 12 are penetrated in the fixing holes 7 and are fixedly connected with the fixing holes 7.
As shown in fig. 5 and 8, a second spring piece 17 for matching with the telescopic rod is arranged on the inner side of the circular tube 1, one end of the second spring piece 17 is connected with the inner wall of the circular tube 1, a rectangular hole is formed in the second spring piece 17 along the length direction, the width of the rectangular hole is equal to the diameter of the tail end of the fourth sleeve rod 15, and the tail end of the fourth sleeve rod 15 extends into the rectangular hole and is in sliding connection with the rectangular hole; limiting pieces 20 used for blocking the second spring piece 17 from moving along the length direction of the fourth loop bar 15 are symmetrically arranged on two sides of the tail end of the fourth loop bar 15, and the telescopic bar is abutted with the second spring piece 17 through the limiting pieces 20.
As shown in fig. 11, the second spring piece 17 is an arc-shaped metal piece.
As shown in fig. 6 and 8, two sides of the tail end of the telescopic rod are respectively connected with the guide wheel 16 through a third spring piece 19, specifically, the third spring piece 19 is a metal sheet with a rectangular section, and two ends of the third spring piece 19 are respectively fixedly connected with the fourth sleeve rod 15 and the guide wheel 16.
As shown in fig. 9, the guide wheel 16 includes a limit rotating shaft 21 and a rotating surface 22 rotatably disposed on the limit rotating shaft 21, and the rotating surface 22 has an arc structure with a concave middle part. Specifically, as shown in fig. 10, the limiting rotating shaft 21 is formed by connecting three cylinders with different diameters, wherein the diameter of a middle cylinder is the same as the inner diameter of the rotating surface 22, and the diameters of two cylinders positioned at the left side and the right side of the middle cylinder are both larger than the diameter of the middle cylinder, so that the limiting rotating shaft 21 can limit the left-right movement of the rotating surface 22 while ensuring that the rotating surface 22 rotates around the limiting rotating shaft 21.
As shown in fig. 2, the end surface of the circular tube 1 is provided with a flaring structure 5, and by providing the flaring structure 5, the wire can be conveniently inserted.
During wire erecting construction, the composite anti-slip wire-laying pulley is hung at the tower head, then a wire is penetrated into the round tube 1 from the flaring structure 5, the wire continuously penetrates inwards, the wire forwards props against the wire-locking wheel 2 to rotate around the outer ring rod 8 until the wire penetrates through the outer ring rod, at the moment, the wire-locking wheel 2 is tightly attached to the outer side of the wire due to the action of the first spring piece 11, so that the composite anti-slip wire-laying pulley can be suitable for the wire with any section, when the wire penetrates through the wire-locking wheel 2 to continuously move inwards, the second spring piece 17 is extruded to bend outwards, the telescopic rod of the wire-limiting pulley 4 is driven to shrink, the wire penetrates through the guide wheels 16, at the moment, due to the action of the second spring piece 17 and the telescopic rod inner reset spring 18, the wire-limiting pulley 4 is tightly attached to the outer side of the wire, and the wire lateral movement is limited, wire laying and wire tightening work can be smoothly implemented, and the wire can be effectively prevented from slipping in the round tube 1. When the construction is stopped when a problem is encountered (for example, the wire falls off from the hand of a constructor), the wire tends to retract, and at this time, the wire locking wheel 2 can limit the retraction of the wire under the action of the first spring piece 11.
The above embodiments are only for illustrating the technical solution of the present application, and not for limiting the same; although the application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present application.
Claims (10)
1. A composite anti-slip paying-off tackle, comprising: a round tube;
a plurality of wire locking wheels for limiting the retraction of the wire are uniformly arranged on the upper part of the circular tube along the circumferential direction;
the middle part and the lower part of the circular tube are respectively and uniformly provided with a wire limiting pulley along the circumferential direction;
the wire limiting pulley comprises a telescopic rod and guide wheels symmetrically arranged at two sides of the tail end of the telescopic rod;
one end of the telescopic rod, which is far away from the guide wheel, is fixedly connected with the round tube, and a reset spring is arranged in the telescopic rod.
2. The composite anti-slip paying-off tackle according to claim 1, wherein a plurality of reserved square holes for the wire locking wheel to extend into the circular tube are uniformly formed in the upper part of the circular tube along the circumferential direction;
an outer ring fixing piece for installing a plurality of locking wire wheels in series is fixed on the outer side of the circular tube;
a reserved round hole is formed in the wire locking wheel, and the wire locking wheel is rotatably arranged on the outer ring fixing piece through the reserved round hole;
a first spring piece for enabling the wire locking wheel to be tightly attached to the outer wall of the wire is arranged on the inner wall of the reserved round hole;
the first spring piece is abutted with the outer ring fixing piece.
3. The composite anti-slip line tackle according to claim 2, wherein the outer ring fixing member is a regular polygon structure composed of a plurality of outer ring rods;
the regular polygon structure is fixedly connected with the round tube through a plurality of wedge blocks.
4. The composite anti-slip line carrier of claim 1, wherein the line locking wheel is of a disc-like configuration;
the periphery of the disc-shaped structure is uniformly provided with teeth with trapezoidal sections.
5. The composite anti-slip paying-off tackle according to claim 1, wherein the telescopic rod comprises a first sleeve rod, a second sleeve rod, a third sleeve rod and a fourth sleeve rod which are sleeved in sequence;
the diameters of the first loop bar, the second loop bar, the third loop bar and the fourth loop bar decrease in sequence;
the first loop bar is fixedly connected with the round tube;
the guide wheels are symmetrically arranged at two sides of the tail end of the fourth loop bar;
one end of the return spring is connected with the inner wall of the first loop bar, and the other end of the return spring penetrates through the second loop bar and the third loop bar in sequence and then is connected with the inner wall of the fourth loop bar.
6. The composite anti-slip paying-off tackle according to claim 1, wherein a second spring piece matched with the telescopic rod is arranged on the inner side of the circular tube;
one end of the second spring piece is connected with the inner wall of the circular tube;
rectangular holes are formed in the second spring piece along the length direction;
the width of the rectangular hole is equal to the diameter of the tail end of the telescopic rod;
the tail end of the telescopic rod stretches into the rectangular hole and is connected with the rectangular hole in a sliding manner;
limiting pieces for blocking the second spring piece are symmetrically arranged on two sides of the tail end of the telescopic rod;
the telescopic rod is in butt joint with the second spring piece through the limiting piece.
7. The composite anti-slip payout trolley of claim 6, wherein the second spring plate is an arcuate metal plate.
8. The composite anti-slip paying-off tackle according to claim 1, wherein two sides of the tail end of the telescopic rod are respectively connected with the guide wheels through a third spring piece.
9. The composite anti-slip line tackle according to claim 1, wherein the guide wheel comprises a limit rotating shaft and a rotating surface rotatably arranged on the limit rotating shaft.
10. The composite anti-slip line tackle according to claim 1, wherein a flaring structure is provided on the end face of the round tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310945762.8A CN116683353A (en) | 2023-07-31 | 2023-07-31 | Combined type anti-slip paying-off pulley |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310945762.8A CN116683353A (en) | 2023-07-31 | 2023-07-31 | Combined type anti-slip paying-off pulley |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116683353A true CN116683353A (en) | 2023-09-01 |
Family
ID=87781354
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310945762.8A Pending CN116683353A (en) | 2023-07-31 | 2023-07-31 | Combined type anti-slip paying-off pulley |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116683353A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106410663A (en) * | 2016-08-30 | 2017-02-15 | 上海繁得信息科技有限公司 | Communication network setup pull and transmission device |
| CN213170274U (en) * | 2020-08-10 | 2021-05-11 | 青岛双发拨叉有限公司 | Shifting fork processing is with transporting frame |
| CN114977010A (en) * | 2022-07-05 | 2022-08-30 | 广东电网有限责任公司 | Locking wire wheel type anti-slip paying-off tackle |
| CN115064986A (en) * | 2022-07-05 | 2022-09-16 | 广东电网有限责任公司 | Anti-slip paying-off tackle |
-
2023
- 2023-07-31 CN CN202310945762.8A patent/CN116683353A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106410663A (en) * | 2016-08-30 | 2017-02-15 | 上海繁得信息科技有限公司 | Communication network setup pull and transmission device |
| CN213170274U (en) * | 2020-08-10 | 2021-05-11 | 青岛双发拨叉有限公司 | Shifting fork processing is with transporting frame |
| CN114977010A (en) * | 2022-07-05 | 2022-08-30 | 广东电网有限责任公司 | Locking wire wheel type anti-slip paying-off tackle |
| CN115064986A (en) * | 2022-07-05 | 2022-09-16 | 广东电网有限责任公司 | Anti-slip paying-off tackle |
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Application publication date: 20230901 |