CN214247192U - Rope ladder head - Google Patents
Rope ladder head Download PDFInfo
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- CN214247192U CN214247192U CN202023202126.7U CN202023202126U CN214247192U CN 214247192 U CN214247192 U CN 214247192U CN 202023202126 U CN202023202126 U CN 202023202126U CN 214247192 U CN214247192 U CN 214247192U
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Abstract
The utility model provides a rope ladder head, which comprises a ladder head main body; the ladder head main body comprises a main frame, a pulley, a connecting rod mechanism and a self-locking plate; the pulley frame is telescopically arranged at the top end of the main frame, two ends of the pulley are respectively rotatably arranged in the pulley frame, and the bottom end of the pulley frame is provided with an opening; the self-locking plate is hinged with the pulley frame and is positioned below the pulley; one end of the connecting rod mechanism is hinged with the main frame, and the other end of the connecting rod mechanism is hinged with the end of the self-locking plate far away from the pulley frame; when the pulley frame is in a contraction state, the connecting rod mechanism drives the self-locking plate to turn over to open the opening at the bottom end of the pulley frame; when the pulley frame is in an extending state, the connecting rod mechanism drives the self-locking plate to overturn and seal the opening at the bottom end of the pulley frame, a placing area for preventing the ground wire from being separated is formed between the pulley and the self-locking plate, and the rope ladder head is prevented from being separated from the ground wire.
Description
Technical Field
The utility model relates to a power maintenance equipment technical field especially relates to a rope ladder head.
Background
The overhead ground wire has many defects, and for the defect eliminating operation on the binary split ground wire, the single ground wire and the ground wire, an operator needs to utilize a metal rope ladder head to lead out.
At present, a common metal rope ladder head is a locking structure consisting of a metal sheet and a ladder head pulley, and when an operator stands on the ladder head to carry out defect eliminating operation, the operator often and unintentionally touches the metal sheet and disengages the metal sheet, so that the metal rope ladder head has the hidden trouble of disengaging from a ground wire.
Therefore, how to reduce the risk of the metal rope ladder head coming off from the ground wire is a technical problem to be solved urgently by those skilled in the art.
SUMMERY OF THE UTILITY MODEL
In view of this, the present invention provides a rope ladder head to reduce the risk of the metal rope ladder head coming off from the ground wire.
In order to achieve the above object, the utility model provides a following technical scheme:
a rope ladder head comprises a ladder head main body;
the ladder head main body comprises a main frame, a pulley frame, pulleys, a connecting rod mechanism and a self-locking plate;
the pulley frame is telescopically arranged at the top end of the main frame, two ends of the pulley are respectively rotatably arranged in the pulley frame, and the bottom end of the pulley frame is provided with an opening;
the self-locking plate is hinged with the pulley frame and is positioned below the pulley;
one end of the connecting rod mechanism is hinged with the main frame, and the other end of the connecting rod mechanism is hinged with the end of the self-locking plate far away from the pulley frame;
when the pulley frame is in an extending state, the connecting rod mechanism drives the self-locking plate to overturn and seal the opening at the bottom end of the pulley frame, and a placing area for preventing the ground wire from being separated is formed between the pulley and the self-locking plate;
when the pulley frame is in a contraction state, the connecting rod mechanism drives the self-locking plate to turn over to open the opening at the bottom end of the pulley frame.
In a particular embodiment, the ladder head body further comprises a telescopic device;
the pulley frame is telescopically arranged at the top end of the main frame through the telescopic device.
In another specific embodiment, the telescopic device comprises a connecting cylinder, a limiting member and a sliding piston;
the bottom end of the connecting cylinder is mounted at the top end of the main frame, the limiting piece is mounted at the top end of the connecting cylinder, and the sliding piston is mounted at the bottom end of the pulley frame, is arranged in the connecting cylinder and can slide along the axial direction of the connecting cylinder;
the limiting piece limits the sliding piston to prevent the sliding piston from sliding out of the connecting cylinder;
the self-locking plate comprises a first connecting plate and a second connecting plate, the first end of the first connecting plate is fixedly connected with the first end of the second connecting plate, the joint of the first connecting plate and the second connecting plate is hinged to the pulley frame, the second end of the first connecting plate is hinged to the connecting rod mechanism, and the weight of the second connecting plate is larger than that of the first connecting plate.
In another specific embodiment, the stopper is cylindrical;
the limiting piece is sleeved outside the connecting cylinder and is in threaded connection with the connecting cylinder;
the top of locating part is provided with the spacing ring, the top of sliding piston can with the bottom butt of spacing ring.
In another embodiment, the sliding piston includes a piston body and a screw fixed to a top end of the piston body, and the screw is threadedly coupled to the pulley frame.
In another specific embodiment, the pulley frame comprises an inverted U-shaped frame, an inclined bar, and a vertical bar;
the top end of the inclined rod is connected with one side of the bottom end of the inverted U-shaped frame, the bottom end of the inclined rod is connected with the top end of the vertical rod, and the bottom end of the vertical rod is telescopically connected with the main frame;
the axis of the vertical rod is superposed with the symmetrical center line of the inverted U-shaped frame.
In another specific embodiment, the ladder head body further comprises a hook;
the hook is arranged on the outer side wall of the inverted U-shaped frame and used for hanging a protection rope used by an operator.
In another specific embodiment, the bottom end of the ladder head main body is provided with a rope ladder hanging ring for hanging a rope ladder.
In another specific embodiment, the rope ladder head further comprises a first beam, a second beam, a third beam, and a U-shaped beam;
the number of the ladder head main bodies is 2, the ladder head main bodies are arranged in parallel, and two ends of the first cross beam, the second cross beam, the third cross beam and the U-shaped cross beam are respectively connected with the 2 ladder head main bodies;
the first cross beam, the U-shaped cross beam, the second cross beam and the third cross beam are sequentially arranged along the direction from the top end to the bottom end of the ladder head main body.
In another specific embodiment, the rope ladder head further comprises a locking device;
the locking device is arranged at the top end of the pulley frame and used for locking the pulley.
According to the utility model discloses an each embodiment can make up as required wantonly, and the embodiment that obtains after these combinations is also in the utility model discloses the scope is the utility model discloses a part of the concrete implementation mode.
According to the technical scheme, when the rope ladder head needs to be erected on the ground wire, the pulley frame is in a contraction state, and the connecting rod mechanism drives the self-locking plate to turn over to open the opening at the bottom end of the pulley frame, so that the pulley can be slidably arranged above the ground wire; then, the pulley frame is in an extending state, the connecting rod mechanism drives the self-locking plate to overturn and seal the opening at the bottom end of the pulley frame, a placing area for preventing the ground wire from being separated is formed between the pulley and the self-locking plate, and the rope ladder head is prevented from being separated from the ground wire.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without performing novelty work.
Fig. 1 is a schematic front view of a rope ladder head provided by the present invention;
fig. 2 is a left side view structure diagram of the rope ladder head provided by the present invention;
fig. 3 is a schematic partial structure view of the ladder head main body provided by the present invention;
fig. 4 is a schematic cross-sectional structural view of the telescopic device provided by the present invention;
fig. 5 is a schematic structural diagram of the locking device provided by the present invention.
Wherein, in fig. 1-5:
the ladder head comprises a ladder head main body 1, a main frame 101, a pulley 103, a pulley frame 102, a link mechanism 104, a self-locking plate 105, a telescopic device 106, a connecting cylinder 1061, a limiting piece 1062, a sliding piston 1063, a first connecting plate 1051, a second connecting plate 1052, an inverted U-shaped frame 1021, an inclined rod 1022, a vertical rod 1023, a hook 107, a rope ladder hanging ring 108, a first cross beam 2, a second cross beam 3, a third cross beam 4, a U-shaped cross beam 5, a locking device 6, a threaded rod 601, a pressing block 602 and a handle 603.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the present invention will be further described in detail with reference to the accompanying drawings and the detailed description.
As shown in fig. 1-2, the utility model discloses a rope ladder head, wherein, the rope ladder head includes ladder head main part 1, and ladder head main part 1 includes main frame 101, pulley frame 102, pulley 103, link mechanism 104 and self-locking plate 105.
The pulley frame 102 is telescopically installed at the top end of the main frame 101, and specifically, the bottom end of the pulley frame 102 is connected to the top end of the main frame 101.
The two ends of the pulley 103 are rotatably mounted in the pulley frame 102, and the structure of the pulley frame 102 is not limited, and may be any frame body capable of mounting the pulley 103.
The bottom end of the pulley frame 102 is open, and it should be noted that the bottom end of the pulley frame 102 is open, which means that the bottom end of the pulley frame 102 is not closed, so that the rope ladder head can be erected on the ground wire through the bottom end opening of the pulley frame 102.
The self-locking plate 105 is hinged to the pulley frame 102, and the self-locking plate 105 is located below the pulley 103. Specifically, opening and closing of the opening at the bottom end of the pulley frame 102 can be achieved by rotation of the self-locking plate 105.
One end of the link mechanism 104 is hinged to the main frame 101, and the other end of the link mechanism 104 is hinged to the end of the self-locking plate 105 away from the pulley frame 102.
When the pulley frame 102 is in the extended state, the link mechanism 104 drives the self-locking plate 105 to close the opening at the bottom end of the pulley frame 102 in a turnover manner, and a placement area for preventing the ground wire from being separated is formed between the pulley 103 and the self-locking plate 105.
When the pulley frame 102 is in the contracted state, the link mechanism 104 drives the self-locking plate 105 to open the opening at the bottom end of the pulley frame 102.
When the rope ladder head needs to be erected on a ground wire, the pulley frame 102 is in a contraction state, and the connecting rod mechanism 104 drives the self-locking plate 105 to overturn and open the opening at the bottom end of the pulley frame 102, so that the pulley 103 can be slidably arranged above the ground wire; then, the pulley frame 102 is in an extended state, the link mechanism 104 drives the self-locking plate 105 to overturn and seal the opening at the bottom end of the pulley frame 102, and a placement area for preventing the ground wire from being separated is formed between the pulley 103 and the self-locking plate 105, so that the rope ladder head is prevented from being separated from the ground wire.
In some embodiments, the ladder head main body 1 further comprises a telescopic device 106, and the pulley frame 102 is telescopically mounted at the top end of the main frame 101 by the telescopic device 106.
Specifically, the utility model discloses a telescoping device 106 includes connecting cylinder 1061, locating part 1062 and sliding piston 1063, as shown in fig. 4, the bottom of connecting cylinder 1061 is installed at the top of main frame 101, it should be noted that connecting cylinder 1061 can be square tube, also can be drum etc. this embodiment takes connecting cylinder 1061 as a drum for example. The connecting cylinder 1061 may be welded to the top end of the main frame 101, or may be screwed to the top end of the main frame 101, and the specific connection form is not limited.
The limiting member 1062 is mounted at the top end of the connecting cylinder 1061, and for the convenience of disassembling the limiting member 1062 and the convenience of installing the sliding piston 1063 into the connecting cylinder 1061, the utility model discloses a limiting member 1062 is detachably mounted at the top end of the connecting cylinder 1061.
The sliding piston 1063 is installed at the bottom end of the pulley frame 102 and is disposed in the connecting cylinder 1061 to be slidable in the axial direction of the connecting cylinder 1061. The structure of the sliding piston 1063 is not limited, and any structure that can slide in the connecting cylinder 1061 may be used. To facilitate sliding of the sliding piston 1063 within the connecting cylinder 1061, the present invention discloses that the cross-section of the sliding piston 1063 is the same as the cross-section of the interior of the connecting cylinder 1061.
In order to facilitate the sliding of the sliding piston 1063 in the connecting cylinder 1061, the utility model discloses a guiding connection between the sliding piston 1063 and the connecting cylinder 1061 through a guiding device, the guiding device comprises a protrusion and a groove, specifically, the inner wall of the connecting cylinder 1061 can be provided with a protrusion, correspondingly, the outer wall of the sliding piston 1063 is provided with a groove in sliding fit with the protrusion; a groove may be formed in the inner wall of the connecting cylinder 1061, and a protrusion slidably fitted into the groove may be formed on the outer wall of the sliding piston 1063. The guide device may be of other structures capable of guiding.
The stopper 1062 restricts the sliding piston 1063 to prevent the sliding piston 1063 from sliding out of the connecting cylinder 1061.
The self-locking plate 105 includes a first connecting plate 1051 and a second connecting plate 1052, and a first end of the first connecting plate 1051 is fixedly connected to a first end of the second connecting plate 1052, specifically, the first connecting plate 1051 and the second connecting plate 1052 are integrally formed or welded, etc. The connection point of the first connection plate 1051 and the second connection plate 1052 is hinged with the pulley frame 102, the second end of the first connection plate 1051 is hinged with the linkage 104, and the weight of the second connection plate 1052 is greater than that of the first connection plate 1051, so that the second connection plate 1052 of the self-locking plate 105 is inclined downwards to open the bottom end opening of the pulley frame 102 without external interference.
When an operator opens the gate on the rope ladder head, the main frame 101 drives the connecting cylinder 1061 to move downwards under the action of the gravity of the operator, at this time, the top end of the sliding piston 1063 abuts against the limiting piece 1062, the pulley frame 102 is in an extended state, and the link mechanism 104 drives the self-locking plate 105 to turn over, so that the self-locking plate 105 closes the bottom opening of the pulley frame 102. Namely, when an operator opens the gate on the rope ladder head, the main frame 101 is continuously stressed, the self-locking plate 105 continuously acts, the hidden danger that the rope ladder head is separated from the ground wire is eliminated, and effective safety protection is provided for the operator.
When no external force acts on the main frame 101, since the weight of the second connecting plate 1052 is greater than that of the first connecting plate 1051, under the action of gravity, the second connecting plate 1052 tilts downward to open the bottom opening of the pulley frame 102, the first connecting plate 1051 tilts upward and turns over to drive the link mechanism 104 to move upward, and then the link mechanism 104 drives the main frame 101 to move upward, and correspondingly, the sliding piston 1063 disengages from the limiting member 1062.
Namely the utility model discloses in, the dead weight of operation personnel alright with realizing the auto-lock, when the operation personnel was withdrawn from the rope ladder head, the operation personnel pushed away one gently up, alright with opening from jam plate 105, easy operation.
The expansion device 106 may be an air cylinder, a hydraulic cylinder, or the like.
Further, the utility model discloses a locating part 1062 is the tube-shape specifically, it should be explained that, locating part 1062 also can be other structures, for example, locating part 1062 is including a plurality of fixture blocks of buckle connection at connecting cylinder 1061 top. In the embodiment, the limiting member 1062 is a circular cylinder.
The limiting member 1062 is sleeved outside the connecting cylinder 1061 and is in threaded connection with the connecting cylinder 1061, so that the sliding piston 1063 can be conveniently installed in the connecting cylinder 1061.
The top end of the limiting member 1062 is provided with a limiting ring, and the top end of the sliding piston 1063 can be abutted against the bottom end of the limiting ring.
In some embodiments, sliding piston 1063 includes a piston body and a threaded rod secured to a top end of the piston body and threadably coupled to pulley frame 102.
The sliding piston 1063 may be integrally formed or welded directly to the bottom end of the pulley frame 102.
In some embodiments, the pulley frame 102 includes an inverted U-shaped frame 1021, a tilting bar 1022, and a vertical bar 1023, as shown in fig. 3, a top end of the tilting bar 1022 is connected to one side of a bottom end of the inverted U-shaped frame 1021, a bottom end of the tilting bar 1022 is connected to a top end of the vertical bar 1023, and a bottom end of the vertical bar 1023 is telescopically connected to the main frame 101.
In order to realize the balance of ladder head main part 1, the utility model discloses a vertical pole 1023 sets up with the axle center with the frame 1021 of falling U-shaped.
Specifically, the utility model discloses an included angle that inclined rod 1022 and horizontal plane become is 60. The tilt angle may be set as needed.
It should be noted that the inverted U-shaped frame 1021 may be replaced by other structures, such as two parallel plates.
In some embodiments, the present disclosure discloses the linkage mechanism 104 includes a first connecting rod and a second connecting rod, one end of the first connecting rod is hinged to the outer wall of the position-limiting part 1062, the other end of the first connecting rod is connected to one end of the second connecting rod by a screw, and the other end of the second connecting rod is hinged to the first connecting plate 1051 by a pin.
The threaded connection of the first and second connecting rods enables the overall length of the linkage 104 to be adjusted, and facilitates installation and replacement. Specifically, the second link is a bent lever.
In some embodiments, the ladder head body 1 further comprises a hook 107, and the hook 107 is disposed on an outer side wall of the inverted U-shaped frame 1021 for hanging a protection rope for a worker.
Specifically, the hook 107 is a U-shaped hook, and the arrangement of the hook 107 is convenient for an operator to hang a protection rope; on the other hand, it is also possible to avoid the protective rope being wound into the pulley 103 at the time of the transfer position, protecting the protective rope from being worn.
In some embodiments, the bottom end of the ladder head main body 1 is provided with a rope ladder hanging ring 108 for hanging a rope ladder.
In some embodiments, the rope ladder head further comprises a first beam 2, a second beam 3, a third beam 4, and a U-shaped beam 5.
The number of ladder head main part 1 is 2, and parallel arrangement, and 2 ladder head main parts 1 are connected respectively to the both ends of first crossbeam 2, second crossbeam 3, third crossbeam 4 and U-shaped crossbeam 5 equally divide.
And the first beam 2, the U-shaped beam 5, the second beam 3 and the third beam 4 are sequentially arranged along the direction from the top end to the bottom end of the ladder head main body 1.
The third cross member 4 provides a step for the operator.
The operation personnel sit on second crossbeam 3, and U-shaped crossbeam 5 can support operation personnel's back, has improved operating personnel's security, specifically, in order to avoid U-shaped crossbeam 5 whole rope ladder head to cause the big problem of occupation space when not using, the utility model discloses a U-shaped crossbeam 5's both ends respectively with main frame 101 rotatable coupling, realize folding first crossbeam 2, second crossbeam 3 and third crossbeam 4 place plane with U-shaped crossbeam 5.
It should be noted that the U-shaped cross member 5 may be rotatably connected to the main frame 101 by a pin and fastened to a certain position by a bolt.
Specifically, the utility model discloses a first crossbeam 2, U-shaped crossbeam 5, second crossbeam 3 and third crossbeam 4 are the aluminum pipe. It should be noted that other materials may be used.
In some embodiments, the rope ladder head further comprises a locking device 6, the locking device 6 is mounted at the top end of the pulley frame 102, and the locking device 6 is used for locking the pulley 103.
Specifically, the utility model discloses a locking device 6 includes threaded rod 601 and briquetting 602, as shown in fig. 5, threaded rod 601 threaded connection just passes inverted U-shaped frame 1021 on the top of inverted U-shaped frame 1021, and briquetting 602 is installed in the bottom of threaded rod 601, and briquetting 602 is used for compressing tightly pulley 103.
Further, the utility model discloses a briquetting 602 is arc rubber briquetting 602, can agree with pulley 103, is convenient for compress tightly pulley 103.
Furthermore, the utility model discloses a top of threaded rod 601 is provided with handle 603603, is convenient for operating personnel to twist threaded rod 601.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to the embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A rope ladder head is characterized by comprising a ladder head main body;
the ladder head main body comprises a main frame, a pulley frame, pulleys, a connecting rod mechanism and a self-locking plate;
the pulley frame is telescopically arranged at the top end of the main frame, two ends of the pulley are respectively rotatably arranged in the pulley frame, and the bottom end of the pulley frame is provided with an opening;
the self-locking plate is hinged with the pulley frame and is positioned below the pulley;
one end of the connecting rod mechanism is hinged with the main frame, and the other end of the connecting rod mechanism is hinged with the end of the self-locking plate far away from the pulley frame;
when the pulley frame is in an extending state, the connecting rod mechanism drives the self-locking plate to overturn and seal the opening at the bottom end of the pulley frame, and a placing area for preventing the ground wire from being separated is formed between the pulley and the self-locking plate;
when the pulley frame is in a contraction state, the connecting rod mechanism drives the self-locking plate to turn over to open the opening at the bottom end of the pulley frame.
2. The rope ladder head of claim 1 wherein the ladder head body further comprises a telescoping device;
the pulley frame is telescopically arranged at the top end of the main frame through the telescopic device.
3. The rope ladder head of claim 2 wherein the telescoping device comprises a connector barrel, a stop and a sliding piston;
the bottom end of the connecting cylinder is mounted at the top end of the main frame, the limiting piece is mounted at the top end of the connecting cylinder, and the sliding piston is mounted at the bottom end of the pulley frame, is arranged in the connecting cylinder and can slide along the axial direction of the connecting cylinder;
the limiting piece limits the sliding piston to prevent the sliding piston from sliding out of the connecting cylinder;
the self-locking plate comprises a first connecting plate and a second connecting plate, the first end of the first connecting plate is fixedly connected with the first end of the second connecting plate, the joint of the first connecting plate and the second connecting plate is hinged to the pulley frame, the second end of the first connecting plate is hinged to the connecting rod mechanism, and the weight of the second connecting plate is larger than that of the first connecting plate.
4. The rope ladder head of claim 3, wherein the retainer is cylindrical;
the limiting piece is sleeved outside the connecting cylinder and is in threaded connection with the connecting cylinder;
the top of locating part is provided with the spacing ring, the top of sliding piston can with the bottom butt of spacing ring.
5. The rope ladder head of claim 4 wherein the sliding piston includes a piston body and a threaded rod, the threaded rod being secured to a top end of the piston body and the threaded rod being threadably connected to the pulley frame.
6. The rope ladder head of claim 1 wherein the sheave frame includes an inverted U-shaped frame, an inclined bar and a vertical bar;
the top end of the inclined rod is connected with one side of the bottom end of the inverted U-shaped frame, the bottom end of the inclined rod is connected with the top end of the vertical rod, and the bottom end of the vertical rod is telescopically connected with the main frame;
the axis of the vertical rod is superposed with the symmetrical center line of the inverted U-shaped frame.
7. The rope ladder head of claim 6 wherein the ladder head body further comprises a hook;
the hook is arranged on the outer side wall of the inverted U-shaped frame and used for hanging a protection rope used by an operator.
8. The rope ladder head as claimed in claim 1, wherein a rope ladder hanging ring for hanging a rope ladder is provided at the bottom end of the ladder head main body.
9. The rope ladder head of claim 1 further comprising a first beam, a second beam, a third beam, and a U-shaped beam;
the number of the ladder head main bodies is 2, the ladder head main bodies are arranged in parallel, and two ends of the first cross beam, the second cross beam, the third cross beam and the U-shaped cross beam are respectively connected with the 2 ladder head main bodies;
the first cross beam, the U-shaped cross beam, the second cross beam and the third cross beam are sequentially arranged along the direction from the top end to the bottom end of the ladder head main body.
10. The head according to any one of claims 1 to 9, further comprising a locking device;
the locking device is arranged at the top end of the pulley frame and used for locking the pulley.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023202126.7U CN214247192U (en) | 2020-12-26 | 2020-12-26 | Rope ladder head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023202126.7U CN214247192U (en) | 2020-12-26 | 2020-12-26 | Rope ladder head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214247192U true CN214247192U (en) | 2021-09-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023202126.7U Active CN214247192U (en) | 2020-12-26 | 2020-12-26 | Rope ladder head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214247192U (en) |
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2020
- 2020-12-26 CN CN202023202126.7U patent/CN214247192U/en active Active
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