Safety anchoring rod frame for high-altitude operation

Abstract

The invention discloses a safety anchoring rod frame for aloft work, and relates to the technical field of anchoring rod frames, the safety anchoring rod frame comprises two rod frames and a safety rope connected between the two rod frames, a mounting seat is arranged at the bottom of each rod frame, and each mounting seat comprises a bottom plate, a support, a clamping plate, a first screw rod and a second screw rod; the bottom plate is arranged at the bottom of the rod frame, and the bottom plate and the support are in sliding connection in the first direction; the clamping plate is slidably connected to the support in the direction perpendicular to the first direction, the clamping plate and the bottom plate have an overlapping area in the first direction, and a clamping space is formed between the overlapping area and the bottom plate; the first screw rod is in threaded connection with the support and used for adjusting the size of the overlapping area so as to be matched with the depth of the clamped object. The clamping area between the bottom plate and the clamping plate can be increased so that the clamping strength in the vertical direction can be improved, while the end of the clamping plate abuts against the side face of the transformer, the outer end face of the horizontal rainproof eave keeps abutting against the support, and therefore the installation firmness in the horizontal direction is improved.

Description

Technical Field

[0001] The invention relates to the technical field of anchor rod frames, in particular to a safety anchor rod frame for aerial work. Background Art

[0002] Work performed at a height of 2 meters or more from the falling height reference plane, where there is a possibility of falling, is considered high-altitude work. High-altitude work requires workers to wear safety belts, and the safety belts must be hung "high and used low". Work performed on top of electrical equipment such as transformers is also considered high-altitude work. However, there is no place to hang safety belts above the top of electrical equipment such as transformers. If the safety belt is tied directly to the top of the transformer, it is considered "low hanging and high use", which does not provide the desired protection. Therefore, a safe anchoring structure needs to be built when inspecting or maintaining electrical equipment.

[0003] For example, the patent with publication number CN205875826U discloses a transformer maintenance protection frame, which is installed on the lifting ring at the top of the transformer, including a safety beam, a suspension ring, a through bolt, a spiral fastening clamp, and a base. A suspension ring is set at one end of the safety beam for buckling the safety belt suspension ring, and the other end of the safety beam is fixedly connected to the base, and the base can cover and wrap the lifting ring; the base is an M-shaped steel plate frame with an intermediate steel plate, the intermediate steel plate is parallel to the lifting ring and has a hole, and the through bolt can horizontally pass through the intermediate steel plate and the lifting ring hole when in use; spiral fastening clamps are installed through the steel plates on the left and right sides of the base, and the spiral fastening clamps include a clamping plate installed inside the base and a rotating handle installed outside the bottom, and the two clamping plates are separated on the left and right sides of the lifting ring, and the rotating handle adjusts the horizontal position of the clamping plate through a spiral mechanism. It avoids the current irregularity of the low-hanging use of safety belts, provides a safety belt hook point, guarantees the personal safety of the staff to the greatest extent, improves the activity sensitivity of the maintenance personnel during operation, and improves work efficiency.

[0004] In the above-mentioned prior art, the safety anchoring structure such as the protective frame is a safety rod on the lifting ring at the top of the transformer. Since the position of the lifting ring is relatively limited, the protective frame has a blind spot, that is, when working at a distance from the lifting ring, the safety belt cannot be normally hung on the protective frame. Summary of the invention

[0005] The purpose of the present invention is to provide a safety anchor rod rack for aerial work, so as to solve the problem in the above-mentioned prior art that the installation position of the safety anchor structure is limited, the coverage range is small, and the safety belt is inconvenient to hang.

[0006] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: a safety anchoring rod frame for aerial work, comprising two rod frames and a safety rope connected between the two rod frames, a mounting seat is arranged at the bottom of the rod frame, and the mounting seat comprises a base plate, a bracket, a clamping plate, a first screw and a second screw; the base plate is arranged at the bottom of the rod frame, and the base plate and the bracket are slidingly connected along a first direction; the clamping plate is slidingly connected to the bracket along a direction perpendicular to the first direction, and the clamping plate has an overlapping area with the base plate in the first direction, and a clamping space is formed between the overlapping area and the base plate; the first screw is screwed to the bracket for adjusting the size of the overlapping area to adapt to the depth of the clamped object, and the second screw is screwed to the bracket for adjusting the clamping space to adapt to the thickness of the clamped object.

[0007] Furthermore, the base plate is fixedly connected to the bottom of the rod frame.

[0008] Furthermore, the bottom plate is hinged to the bottom of the rod frame via a hinge support.

[0009] Furthermore, a connecting block is fixedly connected to the clamping plate, and the connecting block is rotationally connected to the first screw rod.

[0010] Furthermore, a wire twister is installed in the middle of one of the pole frames, a fixed pulley is installed on the top, and a hanging ring is installed on the top of the other pole frame; one end of the safety rope is wound and connected to the wire twister, and the other end is connected to a hook, which can be hung on the hanging ring.

[0011] Furthermore, the wire rope winch includes a shell fixedly mounted on a corresponding rod frame, a winch for winding a safety rope is rotatably connected to the shell, a driven gear is coaxially fixedly connected to the winch, a driving gear is rotatably connected to the shell, the driving gear is meshed with the driven gear, and a crank is connected to the driving gear.

[0012] Furthermore, a locking mechanism and a safety mechanism are also provided in the shell, the locking mechanism includes a ratchet and a pawl, the safety mechanism includes a tooth assembly and a transmission assembly, the ratchet is coaxially fixedly connected to the capstan, and the pawl is elastically rotatably connected to the shell; the tooth assembly includes a first tooth, a slider and a slide rod, the first tooth is coaxially fixedly connected to the driving gear, the slide rod is coaxially and slidably connected to the driving gear, the crank is connected to the slide rod, the slider is fixedly connected with a second tooth, a compression spring is provided between the slider and the slide rod, and when the compression spring releases the elastic force, the slider can be driven to slide in the slide rod close to the driving gear so that the second tooth is engaged with the first tooth; the transmission assembly includes an extension rod, a slip ring and a connecting rod, the extension rod is coaxially fixedly connected to the pawl, the slip ring is movably sleeved on the extension rod, one end of the connecting rod is fixedly connected to the slip ring, and the other end is rotatably connected to the slide rod, an oblique groove is provided on the inner wall of the slip ring, and a protrusion that slides with the oblique groove is provided on the peripheral side of the extension rod.

[0013] Furthermore, a magnetic attraction member is provided between the connecting rod and the housing, and when the second latching tooth is disengaged from the first latching tooth, the magnetic attraction member is magnetically engaged.

[0014] Furthermore, the ends of the first screw rod and the second screw rod are respectively provided with through holes.

[0015] In the above technical scheme, the present invention provides a safety anchor rod frame for high-altitude operations, the mounting seat can be clamped around the transformer, the installation position is flexible and changeable, and the mounting seat is firmly clamped. For transformers with horizontal rainproof eaves on the top edge, the mounting structure can not only clamp horizontal rainproof eaves of different thicknesses through the bottom plate and the clamping plate, but also can adapt to the protruding depth of the horizontal rainproof eaves by adjusting the size of the overlapping area between the clamping plate and the bottom plate, which can not only maximize the clamping area between the bottom plate and the clamping plate to increase the clamping strength in the vertical direction, but also the end of the clamping plate can abut against the side of the transformer while the outer end face of the horizontal rainproof eaves is kept in abutment with the bracket, thereby increasing the installation firmness in the horizontal direction. In addition, the mounting seat is not only suitable for transformers with horizontally protruding top edges, but also for transformers with right-angle rainproof eaves on the top edges. It has good applicability and is worthy of promotion. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0017] Figure 1 A schematic diagram of the overall structure provided by an embodiment of the present invention; Figure 2 A front view of the overall structure provided by an embodiment of the present invention; Figure 3 A schematic diagram of the structure of a mounting base connected to a clamping object provided by an embodiment of the present invention; Figure 4 A front view of the overall structure provided for another embodiment of the present invention; Figure 5 A schematic diagram of the structure of a mounting base connected to a clamping object provided by another embodiment of the present invention; Figure 6 A schematic diagram of a structure in which a mounting base provided by another embodiment of the present invention is connected to another type of clamping object; Figure 7 A schematic diagram of the structure of a bracket provided in an embodiment of the present invention; Figure 8 A schematic diagram of the structure of a wire twister provided in an embodiment of the present invention Figure I ; Fig. 9 A schematic diagram of the structure of the wire twister provided in the embodiment of the present invention Figure II ; Fig.10 Schematic diagram of the internal structure of the wire twister when the locking mechanism provided in the embodiment of the present invention is locked Figure I ; Fig.11 Schematic diagram of the internal structure of the wire twister when the locking mechanism provided in the embodiment of the present invention is locked Figure II ; Fig.12 A structural front view of a wire twister provided by an embodiment of the present invention; Fig.13 For the present invention Fig.12 Structural section view along the AA line; Fig.14 A schematic diagram of the internal structure of a wire twister when the locking mechanism provided by an embodiment of the present invention is unlocked; Fig.15 A cross-sectional view of the wire twister structure when the locking mechanism provided by the embodiment of the present invention is unlocked; Fig.16 A schematic diagram of the structure of a latch assembly provided in an embodiment of the present invention; Fig.17 A schematic diagram of the structure of a transmission assembly provided in an embodiment of the present invention.

[0018] Description of reference numerals: 1. Pole frame; 2. Mounting seat; 21. Bottom plate; 211. Hinge support; 22. Bracket; 23. Clamping plate; 24. First screw rod; 25. Second screw rod; 26. Connecting block; 3. Safety rope; 4. Hook; 5. Fixed pulley; 6. Hanging ring; 7. Wire twister; 71. Shell; 701. Sleeve; 702. Back plate; 703. U-shaped plate; 704. Gear protection shell; 705. Protective cover; 72. Winch; 73. Driven gear; 74. Driving gear; 75, crank; 76, ratchet; 77, pawl; 78, first latch tooth; 79, second latch tooth; 710, slider; 711, slide bar; 712, compression spring; 713, extension rod; 714, slip ring; 715, connecting rod; 716, inclined groove; 717, protrusion; 718, magnetic element; 719, shaft one; 720, shaft two; 721, slide groove; 722, protrusion; 723, ring; 724, torsion spring; 8, clamping object. DETAILED DESCRIPTION

[0019] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0020] See also Figure 1-Figure 17The embodiment of the present invention provides a safety anchoring rod frame 1 for aerial work, comprising two rod frames 1 and a safety rope 3. The bottom of the two rod frames 1 has a mounting seat 2. A wire twister 7 is installed in the middle of one of the rod frames 1, and a fixed pulley 5 is installed on the top. A hanging ring 6 is installed on the top of the other rod frame 1. One end of the safety rope 3 is wound and connected to the wire twister 7, and the other end is connected to a hook 4. The mounting seats 2 of the two rod frames 1 are respectively installed on the horizontal rainproof eaves at both ends of the length direction of the top of the transformer, and then the wire twister 7 releases the safety rope 3, and the hook 4 of the safety rope 3 is hung on the hanging ring 6, and then the safety rope 3 is tightened by the wire twister 7. When working at high altitude, the safety belt of the operator is hung on the safety rope 3, which can basically cover the entire working range of the top of the transformer.

[0021] There are two specific design methods for the mounting base 2. One embodiment is only used to clamp the horizontal rainproof eaves of the transformer. Figure 1-3 The mounting seat 2 includes a bottom plate 21, a bracket 22, a clamping plate 23, a first screw 24 and a second screw 25. The bottom plate 21 is fixedly connected to the bottom of the rod frame 1. The bottom plate 21 and the bracket 22 are slidably connected along a first direction (i.e., a vertical direction during installation). The clamping plate 23 is slidably connected to the bracket 22 along a direction perpendicular to the first direction (i.e., a horizontal direction during installation). The first screw 24 is threadedly connected to the bracket 22, and the axial direction of the first screw 24 is consistent with the first direction. A connecting block 26 is fixedly connected to the clamping plate 23, and the connecting block 26 is rotatably connected to the first screw 24. By screwing the first screw 24, the clamping plate 23 can be driven to slide on the bracket 22 through the connecting block 26. The second screw 25 is also threadedly connected to the bracket 22, and the axial direction of the second screw 25 is consistent with the sliding direction of the support plate. The end of the second screw 25 is rotatably connected to the L plate welded on the bottom plate 21. The projection of the clamping plate 23 in the first direction has an overlapping area with the bottom plate 21. As the clamping plate 23 slides, the size of the overlapping area changes, thereby adapting to the depth of the horizontal rainproof eaves in the horizontal direction, and being able to abut and limit the horizontal rainproof eaves of different depths. A clamping space is formed between the overlapping area of ​​the bottom plate 21 and the bottom plate 21. As the bottom plate 21 slides on the bracket 22, the thickness of the clamping space also changes, that is, the spacing between the clamping plate 23 and the bottom plate 21 is adjusted, thereby adapting to the thickness of the clamping object 8, and being able to clamp horizontal rainproof eaves of different thicknesses. The movable design of the clamping plate 23 can not only maximize the clamping area between the bottom plate 21 and the clamping plate 23 to increase the clamping strength in the vertical direction, but also the end of the clamping plate 23 can abut against the side of the transformer while the outer end face of the horizontal rainproof eaves is kept in abutment with the bracket 22, thereby increasing the installation firmness in the horizontal direction.

[0022] Through holes are respectively formed at the ends of the first screw rod 24 and the second screw rod 25 . Inserting a tool such as a screwdriver or a pry bar into the through holes can save effort in rotating the first screw rod 24 and the second screw rod 25 .

[0023] In another embodiment of the mounting base 2, see Figure 4-6 , the only difference is that the bottom plate 21 and the bottom of the pole frame 1 are adjusted from a fixed connection to a hinge connection through a hinge support 211, and there is a rotation range limit between the bottom plate 21 and the bottom of the pole frame 1, and the angle between the bottom surface of the bottom plate 21 and the bottom surface of the pole frame 1 is within the rotation range of 90°-180°. In this way, the mounting base 2 can be installed not only on a horizontal rainproof eaves, but also on a right-angle rainproof eaves, so that it can adapt to transformers with horizontal rainproof eaves and transformers with right-angle rainproof eaves. When the mounting base 2 is installed on a horizontal rainproof eaves, such as Figure 5 The bottom surface of the bottom plate 21 and the bottom surface of the pole frame 1 are on the same horizontal plane, that is, they are both attached to the upper surface of the transformer. The rotation stroke between the bottom plate 21 and the bottom of the pole frame 1 is at a maximum rotation range of 180°. The first screw 24 adjusts the depth of the clamping plate 23 so that the clamping plate 23 abuts against the side of the transformer while the bracket 22 abuts against the outer side of the horizontal rainproof eaves. The second screw 25 adjusts the distance between the bottom plate 21 and the clamping plate 23, so that while clamping the horizontal rainproof eaves in the vertical direction, a limited abutment is performed in the horizontal direction, making the entire mounting base more firmly installed.

[0024] When the mounting base 2 is mounted on a right-angle rainproof eave, Figure 6 , the bottom plate 21 and the clamping plate 23 are clamped to the vertical part of the right-angle rainproof eaves, the end of the clamping plate 23 is in contact with the lower surface of the horizontal part of the right-angle rainproof eaves, and the bottom of the vertical part of the right-angle rainproof eaves is in contact with the bracket 22, and the bottom of the pole frame 1 is attached to the upper surface of the horizontal part of the right-angle rainproof eaves (i.e., the upper surface of the transformer). After the safety rope 3 between the two pole frames 1 is tightened, the bottom of the pole frame 1 is tightly pressed on the upper surface of the horizontal part of the right-angle rainproof eaves, so that the bottom of the pole frame 1 and the end of the clamping plate 23 clamp the horizontal part of the right-angle rainproof eaves, so that the mounting seat 2 is installed more firmly. In this case, the first direction specifically refers to the horizontal direction, and the vertical direction of the second direction specifically refers to the vertical direction.

[0025] In addition to using the wire twister 7 in the prior art, the present invention also optimizes the wire twister 7, with the purpose of providing a safety measure to prevent the safety rope 3 from loosening while facilitating operation, thereby improving the safety of the safety anchor rod frame 1 and ensuring the safety of the operator. Figure 8-9The conventional structure of the wire twister 7 includes a shell 71 fixedly mounted on the corresponding rod frame 1, and the shell 71 is composed of a sleeve 701, a back plate 702, a U-shaped plate 703, a gear protection shell 704 and a protection cover 705 fixed together. The sleeve 701 is used to be sleeved on the rod frame 1 and fixed by a pin connection. One side of the back plate 702 is welded to the sleeve 701, and the other side is welded to the U-shaped plate 703. The gear protection shell 704 is connected inside the U-shaped plate 703, and the protection cover 705 is installed on the outside of the U-shaped plate 703. A capstan 72 for winding the safety rope 3 is rotatably connected to the U-shaped plate 703, a driven gear 73 is coaxially fixedly connected to the capstan 72, a driving gear 74 is rotatably connected to the U-shaped plate 703, the driving gear 74 meshes with the driven gear 73, an L-shaped crank 75 is connected to the driving gear 74, and the crank 75 is rotated to transmit the driving gear 74 and the driven gear 73 to the capstan 72, so that the safety rope 3 can be tightened. As long as any one of the crank 75, the driving gear 74, the driven gear 73 or the capstan 72 is prevented from rotating, the capstan 72 can be prevented from releasing the rope, so that the safety rope 3 is kept in a taut state.

[0026] After the hook 4 is hung on the hanging ring 6, the safety rope 3 is actually loose, and the safety rope 3 needs to be wound by the wire twister 7 to tighten the safety rope 3. Therefore, the winch 72 needs to be driven by the crank 75 to wind up the rope. There is a safety risk of forgetting to lock the safety rope 3 after it is tightened, that is, the rotation direction of the winch 72 for releasing the rope is not locked due to negligence, which is very dangerous. Once a fall accident occurs, the safety rope 3 will be released directly, thereby failing to protect the operator.

[0027] Based on this, see Figure 10-17The improved structure of the wire twister 7 is that a locking mechanism and a safety mechanism are also provided in the shell 71. The locking mechanism includes a ratchet 76 and a pawl 77. The ratchet 76 is coaxially fixedly connected to the shaft 719. The shaft 719 is fixed to the capstan 72 and is rotatable with the U-shaped plate. The pawl 77 is rotatably connected to the gear protection shell 704 through a rotating shaft. A torsion spring 724 is sleeved on the rotating shaft. One end of the torsion spring 724 is connected to the rotating shaft, and the other end is connected to the gear protection rod. The elastic force of the torsion spring 724 can keep the pawl 77 in a state of clamping the ratchet 76. The insurance mechanism includes a latching tooth assembly and a transmission assembly. The latching tooth assembly includes a first latching tooth 78, a slider 710 and a slider 711. The first latching tooth 78 is coaxially fixedly connected to the second shaft 720. The second shaft 720 is fixed to the driving gear 74 and rotates with the U-shaped plate 703. The slider 711 is coaxial with the driving gear 74 and is slidably connected to the housing 71. The slider 711 has a hollow section, which is movably sleeved on the second shaft 720. The crank 75 is connected to the slider 711. A slide groove 721 is provided on the hollow section along the axial direction of the second shaft 720. A protrusion 722 is provided on the slider 710. The protrusion 722 is slidably connected in the slide groove 721, thereby realizing that the slider 710 is slidably connected in the hollow section of the slider 711. The cooperation of the slide groove 721 arc protrusion 722 is used to limit the sliding stroke of the slider 710 in the hollow section. A second latching tooth 79 is provided on one end of the slider 710 close to the first latching tooth 78, and a compression spring 712 is also provided in the hollow section. The compression spring 712 is located between the slider 710 and the slide rod 711. When the elastic force of the compression spring 712 is released, the slider 710 can be driven to slide close to the driving gear 74 so that the second latching tooth 79 is engaged with the first latching tooth 78; the transmission assembly includes an extension rod 713, a slip ring 714 and a connecting rod 715. The extension rod 713 is a part of the rotating shaft of the pawl 77, and the two are integrally formed. The slip ring 714 is movably sleeved on the extension rod 713, and an inclined groove 716 is provided on the inner wall of the slip ring 714. A protrusion 717 is provided on the peripheral side of the extension rod 713. The protrusion 717 is slidingly arranged in the inclined groove 716. One end of the connecting rod 715 is fixedly connected to the slip ring 714, and the other end is rotatably connected to the slide rod 711 through a circular ring 723.

[0028] After the two rod frames 1 are installed, the wire twister 7 needs to release the safety rope 3 so that the hook 4 at the other end of the safety rope 3 can be fixed to the hanging ring 6 of the other rod frame 1. During the process of releasing the safety rope 3, the locking mechanism must be kept in the unlocked state. The operation method is to pull the crank handle 75 outward along the axial direction of the second shaft 720 to slide the slide bar 711, and the slide bar 711 drives the slide block 710 to disengage the second latching tooth 79 from the first latching tooth 78. At this time, although the elastic force of the pressure block causes the protrusion 722 on the slide block 710 to slide to the end of the slide groove 721 close to the driving gear 74, the second latching tooth 79 is still The sliding of the slide rod 711 also drives the slip ring 714 to slide on the extension rod 713 away from the pawl 77 through the connecting rod 715. The slip ring 714 makes the extension rod 713 rotate (because the slip ring 714 cannot rotate) through the sliding cooperation between the protrusion 717 and the inclined groove 716, so that the pawl 77 overcomes the elastic force of the torsion spring 724 and rotates out of the ratchet 76. The pawl 77 is no longer engaged with the ratchet teeth of the ratchet 76, so that the winch 72 is unlocked, and the safety rope 3 can be released from the winch 72 by pulling the safety rope 3, so that the hook 4 is hung on the hanging ring 6. After the hook 4 is hung on the hanging ring 6, the safety rope 3 is still in a loose state. Next, the safety rope 3 needs to be wound by the wire twister 7 to tighten the safety rope 3. The operation method is to push the crank handle 75 inward along the axial direction of the second shaft 720 to make the sliding rod 711 slide, and the sliding rod 711 drives the sliding block 710 to move so that the second locking tooth 79 is re-engaged with the first locking tooth 78. At the same time, the sliding rod 711 drives the sliding ring 714 on the extension rod 713 through the connecting rod 715 to slide close to the pawl 77. The sliding ring 714 rotates the extension rod 713 through the sliding cooperation between the protrusion 717 and the inclined groove 716, so that the pawl 77 rotates to re-engage with the ratchet 76, thereby preventing the winch 72 from rotating in the direction of releasing the safety rope 3, and then the crank handle 75 is turned to make the winch 72 rewind the safety rope 3 to tighten the safety rope 3.

[0029] That is to say, in the process of releasing the safety rope 3, the pawl 77 must be disengaged from the ratchet 76, so that the winch 72 can rotate to release the safety rope 3, and at the same time, the transmission between the crank 75 and the driving gear 74 is disconnected (that is, the second latching tooth 79 and the first latching tooth 78 are disengaged); and in the operation of tightening the safety rope 3, the transmission coupling between the crank 75 and the driving gear 74 must be made, so that the winch 72 can be driven by the crank 75 to rotate and tighten the safety rope 3, and the coupling between the crank 75 and the driving gear 74 will inevitably drive the pawl 77 to engage the ratchet 76, so that the winch 72 can be wound around the safety rope 3, and the winch 72 can be prevented from turning over and releasing the safety rope 3 after the crank 75 is released. Therefore, a safety mechanism is formed to completely solve the hidden danger of forgetting to lock the safety rope 3 after tightening it.

[0030] The slider 710 and the compression spring 712 are provided to improve fault tolerance, because there are two situations in the process of the slide bar 711 sliding in the direction close to the driving gear 74. One situation is that the second latch tooth 79 is just aligned with the tooth gap of the first latch tooth 78, and the second latch tooth 79 can smoothly engage with the first latch tooth 78. The other situation is that the second latch tooth 79 is not just aligned with the tooth gap of the first latch tooth 78, that is, the second latch tooth 79 overlaps with the first latch tooth 78. At this time, after the second latch tooth 79 abuts against the first latch tooth 78, the compression spring 712 will be further compressed, so that the slide bar 711 can continue to slide into place to avoid interference. Subsequently, in the process of rotating the crank 75, the second latch tooth 79 can be rotated relative to the first latch tooth 78. Once the second latch tooth 79 rotates to the tooth gap that just rotates against the first latch tooth 78, the elastic force of the compression spring 712 is immediately released to engage the second latch tooth 79 with the first latch tooth 78, and finally the engagement of the second latch tooth 79 with the first latch tooth 78 can still be achieved.

[0031] After the second latch tooth 79 disengages from the first latch tooth 78, there is a situation in which the slide bar 711 accidentally slides due to vibration or other factors during the process of the winch 72 releasing the rope, causing the pawl 77 to rotate back to the state of engagement with the ratchet 76. In order to avoid this situation from happening, which may cause the winch 72 to be unable to rotate normally to release the rope, a magnetic attraction member 718 is provided between the connecting rod 715 and the housing 71. The magnetic attraction member 718 consists of two parts that can attract each other, such as two magnets, or a magnet and an iron block, one part of which is installed on the connecting rod 715, and the other part is installed on the inner side of the protective cover 705. When the second latch tooth 79 disengages from the first latch tooth 78, the two parts are docked together, that is, the magnetic attraction member 718 is magnetically engaged, and the magnetic attraction force of the magnetic attraction member 718 when it is attracted is greater than the elastic force of the torsion spring 724 of the pawl 77.

[0032] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A safety anchoring rod frame for aerial work, comprising two rod frames and a safety rope connected between the two rod frames, characterized in that: A mounting seat is provided at the bottom of the rod frame, and the mounting seat includes a bottom plate, a bracket, a clamping plate, a first screw rod and a second screw rod; The bottom plate is arranged at the bottom of the rod frame, and the bottom plate is slidably connected to the bracket along a first direction; The clamping plate is slidably connected to the bracket along a direction perpendicular to the first direction, and the clamping plate has an overlapping area with the bottom plate in the first direction, and a clamping space is formed between the overlapping area and the bottom plate; The first screw is screwed to the bracket to adjust the size of the overlap area to adapt to the depth of the clamped object, and the second screw is screwed to the bracket to adjust the clamping space to adapt to the thickness of the clamped object.

2. A safety anchor rod frame for aerial work according to claim 1, characterized in that: The bottom plate is fixedly connected to the bottom of the rod frame.

3. A safety anchor rod frame for aerial work according to claim 1, characterized in that: The bottom plate is hinged to the bottom of the rod frame via a hinge support.

4. A safety anchor rod frame for aerial work according to claim 1, characterized in that: A connecting block is fixedly connected to the clamping plate, and the connecting block is rotatably connected to the first screw rod.

5. A safety anchor rod frame for aerial work according to claim 1, characterized in that: A wire twister is installed in the middle of one of the pole frames, a fixed pulley is installed on the top, and a hanging ring is installed on the top of the other pole frame; one end of the safety rope is wound and connected to the wire twister, and the other end is connected to a hook, which can be hung on the hanging ring.

6. A safety anchor rod frame for aerial work according to claim 5, characterized in that: The wire winder comprises a shell body fixedly mounted on a corresponding rod frame, a winch for winding a safety rope is rotatably connected to the shell body, a driven gear is coaxially fixedly connected to the winch, a driving gear is rotatably connected to the shell body, the driving gear meshes with the driven gear, and a crank is connected to the driving gear.

7. A safety anchor rod frame for aerial work according to claim 6, characterized in that: The housing is also provided with a locking mechanism and a safety mechanism, wherein the locking mechanism comprises a ratchet and a pawl, and the safety mechanism comprises a latching tooth assembly and a transmission assembly, wherein the ratchet is coaxially fixedly connected to the capstan, and the pawl is elastically rotatably connected to the housing; the latching tooth assembly comprises a first latching tooth, a slider and a slide rod, the first latching tooth is coaxially fixedly connected to the driving gear, the slide rod is coaxially and slidably connected to the driving gear, the crank is connected to the slide rod, a second latching tooth is fixedly connected to the slider, a compression spring is arranged between the slider and the slide rod, and when the compression spring releases the elastic force, the slider can be driven to slide in the slide rod close to the driving gear so that the second latching tooth is engaged with the first latching tooth; the transmission assembly comprises an extension rod, a slip ring and a connecting rod, the extension rod is coaxially fixedly connected to the pawl, the slip ring is movably sleeved on the extension rod, one end of the connecting rod is fixedly connected to the slip ring, and the other end is rotatably connected to the slide rod, an oblique groove is provided on the inner wall of the slip ring, and a protrusion that slides and cooperates with the oblique groove is provided on the peripheral side of the extension rod.

8. A safety anchor rod frame for aerial work according to claim 7, characterized in that: A magnetic attraction member is provided between the connecting rod and the housing, and when the second latching tooth is disengaged from the first latching tooth, the magnetic attraction member is magnetically engaged.

9. A safety anchor rod frame for aerial work according to claim 1, characterized in that: The ends of the first screw rod and the second screw rod are respectively provided with through holes.

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