Winching structure

Abstract

The winching structure comprises a shell, a twisted rope chuck assembly and a mounting base, the twisted rope chuck assembly encloses one end of the shell, a hollow cavity is formed between the twisted rope chuck assembly and the shell, and a transmission assembly is arranged in the hollow cavity; the twisted rope chuck assembly at least comprises a rope rotating sleeve, a connecting gear ring and a main shaft support, one end of the main shaft support is fixedly connected with the shell, and the main shaft support is arranged in the rope rotating sleeve through a ball bearing; the transmission assembly comprises a center movable shaft, a limiting column, a first gear, a second gear, an auxiliary rotating shaft rotationally connected to the main shaft support, a planetary gear, a first-gear gear and a second-gear gear, wherein the planetary gear, the first-gear gear and the second-gear gear are sequentially arranged on the auxiliary rotating shaft, and the planetary gear is connected with the connecting gear ring in an engaged mode. According to the winching structure, the rope rotating sleeve rotates quickly and controllably in a labor-saving manner, so that the working efficiency is improved; the structure is simple, control is easy, and safety and reliability are achieved.

Description

Technical Field

[0001] The invention relates to the technical field of electric auxiliary tools, and in particular to a capstan structure. Background Art

[0002] In the operation, maintenance, overhaul and replacement of insulator strings for transmission lines with voltage levels of 220kV and above, a string of 220kV insulators weighs about 100kg, and a string of 500kV insulators weighs about 300kg. Currently, the lifting devices used to replace the entire string of insulators mainly use motorized capstans and hand-cranked capstans. Because most operators find it difficult to accurately operate motorized capstans, hand-cranked capstans are more widely used in daily maintenance work.

[0003] The hand-cranked capstan currently in use has a total weight of about 20kg and usually requires two people to operate it at the same time. If a whole string of 500kV insulation is to be lifted, it will take several people taking turns for about 20 minutes to lift it to the working position. In addition, the hand-cranked capstan can only be installed on the tower, which is time-consuming and labor-intensive to install. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a capstan structure, which can quickly, labor-savingly and controllably retract the rope through the rotation of a rope rotating sleeve, thereby improving working efficiency; the structure is simple, easy to operate, safe and reliable.

[0005] In order to solve the above technical problems, the present invention provides a capstan structure, which is used in a lifting device for performing power maintenance on an insulator string, comprising: a shell, a rope chuck assembly and a mounting base, the rope chuck assembly is enclosed at one end of the shell and a hollow cavity is formed inside the two, a transmission assembly is installed in the hollow cavity, and the mounting base is connected to the other end of the shell; the rope chuck assembly at least comprises: a rope rotating sleeve, a connecting gear ring connected to the rope rotating sleeve and a main shaft bracket for supporting the transmission assembly, one end of the main shaft bracket is tightly connected to the shell, and the main shaft bracket is installed in the rope rotating sleeve through a ball bearing; the transmission assembly comprises: a central movable shaft, a limit column installed at one end of the central movable shaft, A first gear and a second gear respectively fastened to the other end of the central movable shaft, an auxiliary rotating shaft rotatably connected to the main shaft bracket, and a planetary gear, a first gear gear and a second gear gear sequentially mounted on the auxiliary rotating shaft, the planetary gear is meshed and connected with the connecting ring gear, wherein: by driving the central movable shaft to move along its axis, the first gear gear and the first gear are adapted to mesh, or the second gear gear and the second gear are adapted to mesh, and the gear radius size of the first gear gear is larger than the gear radius size of the second gear gear to adjust the rotational torque; by driving the central movable shaft to rotate along its axis, the linkage connecting ring gear and the rope rotating sleeve are rotated synchronously to pull the rope.

[0006] Among them, a hexagonal connecting seat is fastened on the limiting column, a sleeve is sleeved on the outer side of the central movable shaft, the sleeve is fixed to the center of the main shaft bracket, and a spring is sleeved on the surface of the central movable shaft located between the limiting column and the sleeve.

[0007] Wherein, a main shaft fixing ring is fastened on the hexagonal connecting seat, and the main shaft fixing ring is detachably coaxially connected with the main shaft bracket.

[0008] It also includes: a rotating handle adapted to the hexagonal connecting seat, wherein: the rotating handle is inserted into the hexagonal connecting seat to link the limiting column and the main shaft fixing ring to rotate.

[0009] The rope rotating sleeve is trumpet-shaped, with a plurality of through holes at its bottom, and a connecting gear ring is mounted on the inner edge of the rope rotating sleeve; mounting holes corresponding to the plurality of through holes are provided on the surface of the shell, and a self-locking knob plunger is installed in the mounting hole.

[0010] A clamping groove is provided at the bottom of the shell, wherein: an assembly hole is provided on the clamping groove, and a fastening bolt passes through the assembly hole to fasten the mounting base in the clamping groove.

[0011] The end of the central movable shaft is provided with a bolt hole, the bottom of the shell is provided with an adjusting bolt, and the adjusting bolt is threadedly connected with the bolt hole, wherein: rotating the adjusting bolt drives the central movable shaft to slide along the sleeve.

[0012] The rope chuck assembly further comprises: a first rope chuck, a second rope chuck and a rope slider, wherein: the first rope chuck and the second rope chuck are respectively connected to the rope rotating sleeve bolts, and the rope slider is connected to the main shaft fixing ring.

[0013] Wherein, a rope guide block is arranged at the tail of the rope slider.

[0014] Wherein, a dust cover is arranged between the hexagonal connecting seat and the rope slider.

[0015] The implementation of the capstan structure of the present invention has the following beneficial effects: the capstan structure includes: a shell, a rope chuck assembly and a mounting base, the rope chuck assembly is enclosed at one end of the shell and a hollow cavity is formed inside the two, a transmission assembly is installed in the hollow cavity, and the mounting base is connected to the other end of the shell; the rope chuck assembly at least includes: a rope rotating sleeve, a connecting gear ring connected to the rope rotating sleeve and a main shaft bracket for supporting the transmission assembly, one end of the main shaft bracket is tightly connected to the shell, and the main shaft bracket is installed in the rope rotating sleeve through a ball bearing; the transmission assembly includes: a central movable shaft, a limiting column installed at one end of the central movable shaft, a first gear and a second gear respectively fastened to the other end of the central movable shaft, and a rotatable connection The auxiliary rotating shaft on the main shaft bracket and the planetary gear, the first gear gear and the second gear gear which are sequentially installed on the auxiliary rotating shaft, the planetary gear is meshed and connected with the connecting gear ring, wherein: by driving the central movable shaft to move along its axis, the first gear gear and the first gear are adapted to mesh, or the second gear gear and the second gear are adapted to mesh, and the gear radius size of the first gear gear is larger than the gear radius size of the second gear gear, so as to adjust the rotational torque; by driving the central movable shaft to rotate along its axis, the linkage connecting gear ring and the rope rotating sleeve are synchronously rotated to pull the rope, and the rope rotating sleeve is rotated to quickly, labor-savingly and controllably retract the rope, thereby improving the working efficiency; the structure is simple, easy to operate, safe and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a schematic diagram of the overall structure of the capstan structure according to an embodiment of the present invention.

[0018] Figure 2 It is a schematic diagram of the local blasting structure of the capstan structure according to an embodiment of the present invention.

[0019] Figure 3 It is a schematic structural diagram of a transmission assembly of a capstan structure according to an embodiment of the present invention.

[0020] Figure 4 It is a structural schematic diagram of the shell of the capstan structure according to an embodiment of the present invention. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] like Figure 1-Figure 4 FIG. 1 shows a first embodiment of the capstan structure of the present invention.

[0023] The capstan structure in this embodiment is used in a lifting device for performing electrical maintenance on an insulator string, and includes: a shell 29, a rope chuck assembly and a mounting base 27. The rope chuck assembly is enclosed at one end of the shell 29 and a hollow cavity is formed inside the two. A transmission assembly is installed in the hollow cavity. The mounting base 27 is connected to the other end of the shell 29.

[0024] The rope chuck assembly at least comprises: a rope rotating sleeve 14, a connecting gear ring 6 connected to the rope rotating sleeve 14, and a main shaft support 5 for supporting the transmission assembly, one end of the main shaft support 5 is tightly connected to the housing 29, and the main shaft support 5 is installed in the rope rotating sleeve 14 through a ball bearing 4;

[0025] The transmission assembly includes: a central movable shaft 20, a limiting column 3 installed at one end of the central movable shaft 20, a first gear 12 and a second gear 11 respectively fastened to the other end of the central movable shaft 20, an auxiliary shaft 7 rotatably connected to the main shaft support 5, and a planetary gear 8, a first gear 9 and a second gear 10 sequentially installed on the auxiliary shaft 7, the planetary gear 8 is meshed and connected with the connecting ring gear 6, wherein:

[0026] By driving the central movable shaft 20 to move along its axis, switching is performed between the first gear 9 and the first gear 12, or the second gear 10 and the second gear 11. The gear radius size of the first gear 9 is larger than the gear radius size of the second gear 10 to adjust the rotational torque.

[0027] By driving the central movable shaft 20 to rotate along its axis, the linked connecting gear ring 6 and the rope rotating sleeve 14 are rotated synchronously to pull the rope.

[0028] In specific implementation, planetary gears 8, first gear gears 9 and second gear gears 10 are rotatably arranged on both sides of the housing 29 through the auxiliary rotating shaft 7. A hexagonal connecting seat 1 is fastened on the limiting column 3, and the limiting column 3 is a hexagonal prism. A sleeve 22 is sleeved on the outer side of the central movable shaft 20, and the sleeve 22 is fixed to the center of the main shaft bracket 5. A spring 21 is sleeved on the surface of the central movable shaft 20 located between the limiting column 3 and the sleeve 22.

[0029] Wherein: a spindle fixing ring 2 is fastened on the hexagonal connecting seat 1, and the spindle fixing ring 2 is detachably coaxially connected to the spindle support 5.

[0030] Among them, it also includes: a rotating handle 26 adapted to the hexagonal connecting seat 1, wherein: the rotating handle 26 is inserted into the hexagonal connecting seat 1, and the limiting column 3 and the main shaft fixing ring 2 are linked to rotate.

[0031] During implementation, the handle 26 is rotated and inserted into the inner side of the hexagonal connection seat 1, and the spindle fixing ring 2 and the spindle bracket 5 are detachably connected, and the two are coaxial. The hexagonal connection seat 1 and the central movable shaft 20 are installed inside the spindle fixing ring 2 and the spindle bracket 5, and a bearing is arranged between the central movable shaft 20 and the spindle bracket 5. A cross protrusion is arranged at the bottom of the spindle bracket 5, and a through hole is arranged at the end of the cross protrusion. The through hole on the opposite side is aligned with the threaded hole at the bottom of the housing 29, and is fixedly connected by bolts. The through hole on the other side is aligned with the threaded hole at the top of the auxiliary shaft 7, and is arranged to rotate.

[0032] Furthermore, the rope rotating sleeve 14 is trumpet-shaped, and a plurality of through holes are arranged at its bottom, and the connecting gear ring 6 is installed on the inner edge of the rope rotating sleeve 14; the surface of the shell 29 is provided with mounting holes corresponding to the plurality of through holes, and a self-locking knob plunger 13 is installed in the mounting hole.

[0033] Preferably, a bolt hole 28 is provided at the end of the central movable shaft 20 , and an adjusting bolt 24 is provided at the bottom of the shell 29 . The adjusting bolt 24 is threadedly connected to the bolt hole 28 , wherein: rotating the adjusting bolt 24 drives the central movable shaft 20 to slide along the sleeve 22 .

[0034] In this embodiment, a bearing is arranged between the bottom of the second gear 11 and the housing 29 , the planetary gear 8 is meshed with the ring gear 6 , and the outer part of the main shaft support 5 is sleeved with a rope rotating sleeve 14 .

[0035] Furthermore, a clamping groove 23 is provided at the bottom of the housing 29 , wherein: the clamping groove 23 is provided with an assembly hole 30 , and the fastening bolt 25 passes through the assembly hole 30 to fasten the mounting base 27 in the clamping groove 23 .

[0036] Preferably, an inner groove is provided on the surface of the mounting base 27, a screw rod is slidably arranged inside the inner groove, and a clamping hook plate is threadedly connected at one end of the screw rod. By installing the mounting base 27 inside the clamping groove 23, the capstan can be flexibly installed and fixed on angle steels of different models and angles.

[0037] Furthermore, the rope chuck assembly also includes: a first rope chuck 15, a second rope chuck 17 and a rope slider 18, wherein: the first rope chuck 15 and the second rope chuck 17 are respectively bolted to the rope rotating sleeve 14, and the rope slider 18 is connected to the main shaft fixing ring 2.

[0038] Preferably, a rope guide block 16 is provided at the tail of the rope slider 18 .

[0039] Preferably, a dust cover 19 is provided between the hexagonal connecting seat 1 and the rope slider 18 .

[0040] During implementation, the first rope chuck 15 and the second rope chuck 17 are clamped, the first rope chuck 15 and the second rope chuck 17 are connected to the rope rotating sleeve 14 by bolts, and the rope slider 18 is connected to the main shaft fixing ring 2 by bolts.

[0041] During the specific implementation of the capstan structure in this embodiment, when the hoisted object is heavy, the rotating handle 26 or the hexagonal head of the electric wrench is inserted into the hexagonal connecting seat 1, thereby driving the limit column 3 and the main shaft fixing ring 2 to rotate, and the main shaft fixing ring 2 drives the first gear 12 to rotate. At this time, the second gear 10 and the second gear 11 are not in contact, and the first gear 12 drives the first gear 9 to rotate, indirectly driving the planetary gear 8 to rotate, and the planetary gear 8 acts on the ring gear 6, thereby driving the rope rotating sleeve 14 to rotate, and the rope is retracted for pulling. At this time, the gear is low, but the torque is large.

[0042] When the hoisted object is light, rotate the adjusting bolt 24 to drive the central movable shaft 20 to slide downward inside the sleeve 22, so that the second gear 10 and the second gear 11 are meshed, and the first gear 12 drives the first gear 9 to disengage. Insert the rotating handle 26 or the hexagonal head of the electric wrench into the hexagonal connecting seat 1, thereby driving the limit column 3 and the main shaft fixing ring 2 to rotate, and the main shaft fixing ring 2 drives the second gear 11 to rotate, and drives the second gear 11 to rotate, thereby indirectly driving the planetary gear 8 to rotate, and the planetary gear 8 acts on the gear ring 6, thereby driving the rope rotating sleeve 14 to rotate, and the rope is retracted for lifting. At this time, the gear is high and the torque is small, the advantage is fast speed, and the applicable scenes are more extensive.

[0043] A capstan structure implementing the present invention has the following beneficial effects: the capstan structure comprises: a shell, a capstan chuck assembly and a mounting base, the capstan chuck assembly is enclosed at one end of the shell and a hollow cavity is formed inside the two, a transmission assembly is installed in the hollow cavity, and the mounting base is connected to the other end of the shell; the capstan chuck assembly at least comprises: a rope rotating sleeve, a connecting gear ring connected to the rope rotating sleeve and a main shaft bracket for supporting the transmission assembly, one end of the main shaft bracket is tightly connected to the shell, and the main shaft bracket is installed in the rope rotating sleeve through a ball bearing; the transmission assembly comprises: a central movable shaft, a limiting column installed at one end of the central movable shaft, a first gear and a second gear respectively fastened to the other end of the central movable shaft, and a rotatable connecting An auxiliary rotating shaft on the main shaft bracket and a planetary gear, a first gear gear and a second gear gear which are sequentially mounted on the auxiliary rotating shaft, the planetary gear is meshedly connected with the connecting gear ring, wherein: by driving the central movable shaft to move along its axis, the first gear gear and the first gear are adapted to mesh, or the second gear gear and the second gear are adapted to mesh, and the gear radius size of the first gear gear is larger than the gear radius size of the second gear gear, so as to adjust the rotational torque; by driving the central movable shaft to rotate along its axis, the linkage connecting gear ring and the rope rotating sleeve are synchronously rotated to pull up the rope, and the rope rotating sleeve is rotated to quickly, labor-savingly and controllably retract the rope, thereby improving the working efficiency; the structure is simple, easy to operate, safe and reliable.

Claims

1. A capstan structure, used in a lifting device for power maintenance of an insulator string, characterized in that: include: A housing, a rope chuck assembly and a mounting base, wherein the rope chuck assembly surrounds one end of the housing and forms a hollow cavity inside the housing, a transmission assembly is installed in the hollow cavity, and the mounting base is connected to the other end of the housing; The rope chuck assembly at least comprises: a rope rotating sleeve, a connecting gear ring connected to the rope rotating sleeve, and a main shaft bracket for supporting the transmission assembly, one end of the main shaft bracket is tightly connected to the housing, and the main shaft bracket is installed in the rope rotating sleeve through a ball bearing; The transmission assembly includes: a central movable shaft, a limiting column installed at one end of the central movable shaft, a first gear and a second gear respectively fastened to the other end of the central movable shaft, an auxiliary shaft rotatably connected to the main shaft bracket, and a planetary gear, a first gear gear and a second gear gear sequentially installed on the auxiliary shaft, the planetary gear is meshed and connected with the connecting gear ring, wherein: By driving the central movable shaft to move along its axis, the first gear position gear and the first gear are switched to be meshed with each other, or the second gear position gear and the second gear are switched to be meshed with each other, and the radius of the first gear position gear is larger than the radius of the second gear position gear, so as to adjust the rotation torque; The central movable shaft is driven to rotate along its axis, so that the connecting gear ring and the rope rotating sleeve are linked to rotate synchronously, thereby pulling up the rope.

2. The capstan structure according to claim 1, characterized in that: A hexagonal connecting seat is fastened on the limiting column, a sleeve is sleeved on the outer side of the central movable shaft, the sleeve is fixed to the center of the main shaft bracket, and a spring is sleeved on the surface of the central movable shaft located between the limiting column and the sleeve.

3. The capstan structure according to claim 2, characterized in that: A spindle fixing ring is fastened on the hexagonal connecting seat, and the spindle fixing ring is detachably coaxially connected to the spindle bracket.

4. The capstan structure according to claim 3, characterized in that: Also includes: A rotating handle adapted to the hexagonal connection seat, wherein: the rotating handle is inserted into the hexagonal connection seat, linking the limiting column and the main shaft fixing ring to rotate.

5. The capstan structure according to claim 3, characterized in that: The rope rotating sleeve is trumpet-shaped, with a plurality of through holes arranged at the bottom, and the connecting gear ring is arranged on the inner edge of the rope rotating sleeve; The shell surface is provided with mounting holes corresponding to the plurality of through holes one by one, and self-locking knob plungers are arranged in the mounting holes.

6. The capstan structure according to claim 1, characterized in that: A clamping groove is provided at the bottom of the shell, wherein: the clamping groove is provided with an assembly hole, and a fastening bolt passes through the assembly hole to fasten the mounting base in the clamping groove.

7. The capstan structure according to claim 1, characterized in that: A bolt hole is provided at the end of the central movable shaft, and an adjusting bolt is provided at the bottom of the shell. The adjusting bolt is threadedly connected with the bolt hole, wherein: the adjusting bolt is rotated to drive the central movable shaft to slide along the sleeve.

8. The capstan structure according to claim 3, characterized in that: The rope chuck assembly also includes: a first rope chuck, a second rope chuck and a rope slider, wherein: the first rope chuck and the second rope chuck are respectively connected to the rope rotating sleeve bolts, and the rope slider is connected to the main shaft fixing ring.

9. The capstan structure according to claim 8, characterized in that: A rope guide block is arranged at the tail of the rope sliding block.

10. The capstan structure according to claim 8, characterized in that: A dust cover is provided between the hexagonal connecting seat and the rope slider.

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