Construction pulley for stringing of power transmission line

Abstract

The invention relates to the technical field of power transmission line stringing, in particular to a construction tackle for power transmission line stringing. The movable frame is movably arranged at the bottom of the fixed frame, and rolling wheels are rotationally arranged in the movable frame; the clamping and positioning assembly is arranged on the fixing frame and used for being clamped on the steel strand; the lifting assembly is arranged on the fixing frame and used for locking the clamping and positioning assembly; the driving assembly is arranged on the movable frame and used for driving the lifting assembly; through the arrangement of the movable frame, the clamping and positioning assembly, the lifting assembly and the driving assembly, when a cable is pulled, a roller is subjected to downward pressure, the movable frame is forced to move downwards, and the driving assembly is driven to pull down the lifting assembly, so that the clamping and positioning assembly is tightly clamped on the steel strand, and the pulley is prevented from swinging.

Description

Technical Field

[0001] The invention relates to the technical field of power transmission line stringing, and in particular to a construction pulley for power transmission line stringing. Background Art

[0002] Currently, in the process of overhead wire construction in the electric power field, transmission line engineering wire construction pulleys are often used. They are mainly used to protect the cable conductors when laying, saving time and effort. They can also be used where the cable changes direction to protect the cable from being damaged by friction.

[0003] However, the existing transmission line engineering cable construction pulley has a hook hanging on the steel strand when working. During the wire laying process, the wire laying pulley will swing, and the steel strand is easy to fall off from the opening of the hook, resulting in a safety accident of the pulley falling. Summary of the invention

[0004] The object of the present invention is to solve the above-mentioned disadvantages and provide a construction pulley for stringing power transmission lines.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0006] A construction pulley for stringing a power transmission line, comprising:

[0007] Fixed frame;

[0008] A movable frame is movably arranged at the bottom of the fixed frame, and rollers are rotatably arranged inside the movable frame;

[0009] A clamping and positioning assembly is arranged on the fixing frame and is used for clamping on the steel strand;

[0010] A lifting assembly is arranged on the fixing frame and is used for locking and clamping the positioning assembly;

[0011] The driving assembly is arranged on the movable frame and is used for driving the lifting assembly.

[0012] Furthermore, a hanging plate is arranged on the top of the fixed frame, a damping mechanism is arranged on the hanging plate, a pressing plate connected to the damping mechanism is arranged on the top of the movable frame, and the pressing plate is slidably connected to the hanging plate.

[0013] Furthermore, the clamping and positioning assembly includes a vertical plate fixed on a fixed frame, a lead screw is rotatably arranged inside the vertical plate, a lifting platform is arranged on one side of the vertical plate and is sleeved on the lead screw, upper limit clamps are arranged at both ends of the lifting platform, a lower limit clamp corresponding to the upper limit clamp is arranged on the fixed frame, and a clamp for clamping the steel strand is arranged between the upper limit clamp and the lower limit clamp.

[0014] Furthermore, the clamp includes a fixed clamping plate located in the upper limit clamp, a movable clamping plate is movably arranged in the lower limit clamp, the two movable clamping plates are connected by a connecting rod, and the lifting assembly is connected to the connecting rod.

[0015] Furthermore, check blocks are provided on both sides of the connecting rod, check plates are provided on both sides of the connecting rod on the fixing frame, a bidirectional threaded rod is rotatably provided on the fixing frame, and two check plates are respectively sleeved on both ends of the bidirectional threaded rod.

[0016] Furthermore, the anti-return block includes a connecting block fixed on the connecting rod, a limit block is arranged on the connecting block by rotating the fixed rotating shaft, the limit block is clamped with the anti-return plate, and the side of the limit block away from the anti-return plate is connected to the connecting block through an elastic member.

[0017] Furthermore, the lifting assembly includes a mounting frame fixed on the vertical plate, on which a first guide wheel and a second guide wheel are rotatably arranged, on which the first guide wheel and the second guide wheel are arranged steel wire ropes, a sleeve is sleeved on the connecting rod, one end of the steel wire rope is connected to the sleeve, and a pull rod is arranged on the other end of the steel wire rope, and the driving assembly is connected to the pull rod.

[0018] Furthermore, the driving assembly includes a vertical pole fixed on the movable frame, a limit plate is slidably arranged inside the vertical pole, a lifting rod is fixedly arranged on the limit plate, a pressure block connected to the pull rod is arranged at the top of the lifting rod, and a return spring is arranged between the limit plate and the inner wall of the vertical pole and is sleeved on the lifting rod.

[0019] Furthermore, a mounting plate is also provided on the movable frame, and a locking rod fixedly connected to the hanging plate is inserted on the mounting plate.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] The present invention is provided with a movable frame, a clamping and positioning assembly, a lifting assembly and a driving assembly. When the cable is pulled, the roller will be subjected to downward pressure, and the movable frame will be forced to move downward, which will drive the driving assembly to pull down the lifting assembly, so that the clamping and positioning assembly is tightly clamped on the steel strand to prevent the pulley from swinging. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0023] Figure 1 It is a schematic diagram of the main structure of the present invention;

[0024] Figure 2 It is a schematic diagram of the installation of the movable frame and the fixed frame of the present invention;

[0025] Figure 3 It is a schematic diagram of the connection between the lifting assembly and the clamping and positioning assembly of the present invention;

[0026] Figure 4 It is a structural schematic diagram of the clamping and positioning assembly of the present invention;

[0027] Figure 5 It is a structural schematic diagram of the anti-return block of the present invention;

[0028] Figure 6 It is a schematic diagram of the structure of the lifting assembly of the present invention;

[0029] Figure 7 It is a schematic diagram of the structure of the drive assembly of the present invention.

[0030] In the figure: 1, fixed frame; 11, hanging plate; 12, damping mechanism; 2, movable frame; 21, pressure plate; 22, mounting plate; 23, locking rod; 3, roller; 4, clamping and positioning assembly; 41, vertical plate; 42, lead screw; 43, lifting platform; 44, upper limit clamp; 45, fixed clamp; 46, lower limit clamp; 47, movable clamp; 48, connecting rod; 481, check block; 4811, connecting block; 4812, limit block; 4813, fixed shaft; 4814, elastic member; 49, check plate; 491, bidirectional threaded rod; 5, lifting assembly; 51, mounting frame; 52, first guide wheel; 53, second guide wheel; 54, wire rope; 55, sleeve; 56, pull rod; 6, driving assembly; 61, vertical pole; 62, limit plate; 63, lifting rod; 64, pressure block; 65, reset spring. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. In the absence of conflict, the embodiments in this application and the features in the embodiments can be combined with each other. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the present invention.

[0032] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0033] Reference Figure 1-Figure 7 As shown, a construction pulley for stringing a power transmission line comprises:

[0034] Fixed frame 1;

[0035] The movable frame 2 is arranged at the bottom of the fixed frame 1. The movable frame 2 can vibrate up and down relative to the fixed frame 1. A roller 3 is rotatably arranged inside the movable frame 2. The cable passes through the roller 3 for traction.

[0036] The clamping and positioning assembly 4 is arranged on the fixed frame 1, and has two functions. One is that at the initial stage, that is, when the cable is not pulled, the clamping and positioning assembly 4 is set on the steel strand, and it can also be moved on the steel strand for easy adjustment. When the cable is pulled, the roller 3 will be subjected to downward pressure, thereby driving the movable frame 2 to move downward. At this time, the downward movement of the movable frame 2 can be used to drive the clamping and positioning assembly 4 to be tightly clamped on the steel strand;

[0037] A lifting assembly 5 is disposed on the fixing frame 1 and is used to lock and clamp the positioning assembly 4;

[0038] The driving assembly 6 is arranged on the movable frame 2, and drives the lifting assembly 5 by utilizing the pressure exerted on the roller 3. In one embodiment, a hanging plate 11 is arranged on the top of the fixed frame 1, and a damping mechanism 12 is arranged on the hanging plate 11. When the cable is pulled, the roller 3 is pressed and moves downward, and the damping mechanism 12 can buffer the downward movement of the roller 3 to a certain extent, so that it moves downward slowly, and avoids excessive vibration of the roller 3. A pressing plate 21 connected to the damping mechanism 12 is arranged on the top of the movable frame 2, and the pressing plate 21 is slidably connected to the hanging plate 11. When the roller 3 moves downward, the damping mechanism 12 can be pressed downward by the pressing plate 21, so that the movable frame 2 slowly descends;

[0039] The movable frame 2 is also provided with a mounting plate 22, and a locking rod 23 fixedly connected to the hanging plate 11 is inserted on the mounting plate 22;

[0040] Initially, the movable frame 2 and the fixed frame 1 are fixed together by the locking rod 23 to facilitate position adjustment. Later, when in use, the locking rod 23 is loosened to allow the movable frame 2 to move up and down relative to the fixed frame 1. When the movable frame 2 moves down, the clamping positioning assembly 4 can be locked.

[0041] In one embodiment, the clamping and positioning assembly 4 includes a vertical plate 41 fixed on the fixed frame 1, a lead screw 42 is rotatably arranged in the vertical plate 41, a lifting platform 43 is arranged on one side of the vertical plate 41 and is sleeved on the lead screw 42, upper limit clamps 44 are arranged at both ends of the lifting platform 43, and a lower limit clamp 46 corresponding to the upper limit clamp 44 is arranged on the fixed frame 1. The upper limit clamp 44 and the lower limit clamp 46 can be opened, mainly at the beginning, to facilitate hanging on the steel strand, and a clamp for clamping the steel strand is arranged between the upper limit clamp 44 and the lower limit clamp 46, and then the clamp can be tightened and clamped on the steel strand by moving the movable frame 2 downward.

[0042] In one embodiment, the clamp includes a fixed clamp plate 45 located in the upper limit clamp 44, a movable clamp plate 47 is movably arranged in the lower limit clamp 46, the two movable clamp plates 47 are connected by a connecting rod 48, and the lifting assembly 5 is connected to the connecting rod 48;

[0043] When initially hung, it is hung on the fixed clamping plate 45, and then clamped, that is, by moving the movable clamping plate 47 upward, so as to be pressed against the steel strand.

[0044] In one embodiment, check blocks 481 are provided on both sides of the connecting rod 48, check plates 49 are provided on both sides of the connecting rod 48 on the fixing frame 1, and a bidirectional threaded rod 491 is rotatably provided on the fixing frame 1, and the two check plates 49 are respectively sleeved on both ends of the bidirectional threaded rod 491;

[0045] The check block 481 is a trapezoidal structure with a flat lower surface and an inclined upper surface. A matching slot is provided on the check plate 49. The check block 481 can be deflected downward and can only be deflected downward. After the connecting rod 48 moves upward, the check block 481 will move along the slot of the check plate 49, and when moving, it will first be squeezed, deflected downward, and then inserted into the previous slot. When it needs to be restored to the initial state, the two-way threaded rod 491 can be rotated to drive the check plates 49 at both ends to move to both sides and away from the check block 481.

[0046] In one embodiment, the check block 481 includes a connecting block 4811 fixed on the connecting rod 48, and a limit block 4812 is rotatably provided on the connecting block 4811 through a fixed rotating shaft 4813. The upper end of the limit block 4812 is attached to the connecting block 4811 to prevent the limit block 4812 from deflecting upward, and the lower end of the limit block 4812 is a cavity, and the fixed rotating shaft 4813 is arranged in the cavity, so that the limit block 4812 can be deflected downward. The limit block 4812 is inserted in In the slot of the check plate 49, the side of the limit block 4812 away from the check plate 49 is connected to the connecting block 4811 through an elastic member 4814. The elastic member 4814 is also arranged in the cavity. When the limit block 4812 deflects downward, the elastic member 4814 will be compressed. After the limit block 4812 moves to the upper slot, it will deflect upward under the elastic force of the elastic member 4814, so that the upper end of the limit block 4812 is connected to the connecting block 4811.

[0047] In one embodiment, the lifting assembly 5 includes a mounting frame 51 fixed on the vertical plate 41, a first guide wheel 52 and a second guide wheel 53 are rotatably arranged on the mounting frame 51, a steel wire rope 54 is arranged on the first guide wheel 52 and the second guide wheel 53, a sleeve 55 is sleeved on the connecting rod 48, one end of the steel wire rope 54 is connected to the sleeve 55, and a pull rod 56 is arranged on the other end of the steel wire rope 54, and the driving assembly 6 is connected to the pull rod 56;

[0048] After the movable frame 2 moves down, the pull rod 56 will be pulled by the driving assembly 6, the pull rod 56 will move down and pull the wire rope 54, the wire rope 54 will drive the sleeve 55 at the other end to move up, and the movable splints 47 at both ends will be driven up through the connecting rod 48 until they are close to the steel strand, completing the locking.

[0049] In one embodiment, the driving assembly 6 includes a vertical rod 61, which is connected to the pressure plate 21 on the movable frame 2, a limit plate 62 is slidably arranged in the vertical rod 61, a lifting rod 63 is fixedly arranged on the limit plate 62, a pressure block 64 connected to the pull rod 56 is arranged at the top of the lifting rod 63, and a return spring 65 sleeved on the lifting rod 63 is arranged between the limit plate 62 and the inner wall of the vertical rod 61. Here, the return spring 65 has a large elasticity, and the return spring 65 will be compressed only when the movable clamping plate 47 is clamped on the steel strand, that is, when the connecting rod 48 cannot continue to move up and the movable frame 2 continues to move down;

[0050] After the movable frame 2 moves downward, the driving assembly 6 as a whole will also descend, thereby pulling the pull rod 56 downward through the pressure block 64. When the movable splint 47 is close to the steel strand, if the movable frame 2 continues to descend, since the movable splint 47 has been fixed, that is, the lifting rod 63 is fixed, at this time, the vertical rod 61 will descend with the movable frame 2, so that the limit plate 62 compresses the return spring 65, thereby following the movable frame 2 to move adaptively.

[0051] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered exemplary and non-restrictive in all respects, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention.

Claims

1. A construction pulley for stringing a power transmission line, characterized in that: include: Fixed frame (1); A movable frame (2) is movably arranged at the bottom of the fixed frame (1), and a roller (3) is rotatably arranged inside the movable frame (2); A clamping and positioning assembly (4) is arranged on the fixing frame (1) and is used for clamping on the steel strand; A lifting assembly (5) is arranged on the fixing frame (1) and is used for locking and clamping the positioning assembly (4); The driving assembly (6) is arranged on the movable frame (2) and is used for driving the lifting assembly (5).

2. A construction pulley for stringing a power transmission line according to claim 1, characterized in that: A hanging plate (11) is arranged on the top of the fixed frame (1), a damping mechanism (12) is arranged on the hanging plate (11), and a pressing plate (21) connected to the damping mechanism (12) is arranged on the top of the movable frame (2), and the pressing plate (21) is slidably connected to the hanging plate (11).

3. A construction pulley for stringing a power transmission line according to claim 1, characterized in that: The clamping and positioning assembly (4) comprises a vertical plate (41) fixed on a fixed frame (1), a lead screw (42) rotatably arranged inside the vertical plate (41), a lifting platform (43) sleeved on the lead screw (42) is arranged on one side of the vertical plate (41), upper limit clamps (44) are arranged at both ends of the lifting platform (43), a lower limit clamp (46) corresponding to the upper limit clamp (44) is arranged on the fixed frame (1), and a clamp for clamping the steel strand is arranged between the upper limit clamp (44) and the lower limit clamp (46).

4. A construction pulley for stringing a power transmission line according to claim 3, characterized in that: The clamp comprises a fixed clamp (45) located in the upper limit clamp (44), a movable clamp (47) is movably arranged in the lower limit clamp (46), the two movable clamps (47) are connected by a connecting rod (48), and the lifting component (5) is connected to the connecting rod (48).

5. A construction pulley for stringing a power transmission line according to claim 4, characterized in that: The connecting rod (48) is provided with a check block (481) on both sides, the fixing frame (1) and the connecting rod (48) are provided with a check plate (49) on both sides, and the fixing frame (1) is also rotatably provided with a bidirectional threaded rod (491), and the two check plates (49) are respectively sleeved on both ends of the bidirectional threaded rod (491).

6. A construction pulley for stringing a power transmission line according to claim 5, characterized in that: The anti-return block (481) comprises a connecting block (4811) fixed on the connecting rod (48); a limit block (4812) is rotatably arranged on the connecting block (4811) via a fixed rotating shaft (4813); the limit block (4812) is engaged with the anti-return plate (49); and a side of the limit block (4812) away from the anti-return plate (49) is connected to the connecting block (4811) via an elastic member (4814).

7. A construction pulley for stringing a power transmission line according to claim 4, characterized in that: The lifting assembly (5) comprises a mounting frame (51) fixed on the vertical plate (41), a first guide wheel (52) and a second guide wheel (53) are rotatably arranged on the mounting frame (51), a steel wire rope (54) is arranged on the first guide wheel (52) and the second guide wheel (53), a sleeve (55) is sleeved on the connecting rod (48), one end of the steel wire rope (54) is connected to the sleeve (55), and a pull rod (56) is arranged on the other end of the steel wire rope (54), and the driving assembly (6) is connected to the pull rod (56).

8. A construction pulley for stringing a power transmission line according to claim 7, characterized in that: The driving assembly (6) comprises a vertical rod (61) fixed on the movable frame (2), a limit plate (62) slidably arranged inside the vertical rod (61), a lifting rod (63) fixedly arranged on the limit plate (62), a pressure block (64) connected to the pull rod (56) arranged at the top end of the lifting rod (63), and a return spring (65) sleeved on the lifting rod (63) arranged between the limit plate (62) and the inner wall of the vertical rod (61).

9. A construction pulley for stringing a power transmission line according to claim 7, characterized in that: The movable frame (2) is also provided with a mounting plate (22), and a locking rod (23) fixedly connected to the hanging plate (11) is inserted into the mounting plate (22).

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