Automatic opening and closing tackle of flexible gallery type crossing pay-off system

Abstract

The automatic opening and closing tackle comprises a tackle frame, a suspension frame and a sealing plate, the suspension frame is installed at the top end of the tackle frame, an opening is formed in the side portion of the suspension frame, the first end of the sealing plate is hinged to the first end of the opening, and the second end of the sealing plate is hinged to the second end of the opening. The second end of the sealing plate is matched with the second end of the opening through a lock catch assembly. The device has the beneficial effects that by arranging the hanging frame with the opening, when the bearing rope needs to be matched with the hanging frame, locking of the sealing plate can be relieved through the lock catch assembly, then the sealing plate is in a free state, then the sealing plate rotates along the first end of the opening, and the opening is opened; at the moment, the bearing rope can enter from the side part of the hanging frame; and finally, the sealing plate is locked at the second end of the opening under the action of the lock catch assembly, so that the opening can be closed, the load-bearing rope is safely matched with the hanging frame, and the operation is simple, convenient and rapid.

Description

Technical Field

[0001] This application relates to the technical field of electric wire laying devices, and particularly to an automatic opening and closing pulley for a flexible corridor type crossing wire laying system. Background Art

[0002] A pulley is a special tool during live operations in power systems and other systems, and is used for aerial traction and transportation during the overhead laying of large cross-section electric wires. When using a wire laying pulley, it needs to be hung on the cross arm of a iron tower to complete the transportation function during wire traction laying.

[0003] In the prior art, for example, the patent of CN210926872U discloses a seven-wheel wire laying pulley, which realizes the hanging of the entire wire laying device through a round hole provided at the top; that is, when hanging, the end of the bearing rope must pass through the round hole, with relatively large limitations; of course, there are also those that use the cooperation of screws to open and close the round hole (hanging hole) to achieve hanging, but the installation and disassembly of the screws are relatively troublesome. Therefore, an automatic opening and closing pulley for a flexible corridor type crossing wire laying system is proposed to solve the above technical problems. Utility Model Content

[0004] One of the purposes of this application is to provide an automatic opening and closing pulley for a flexible corridor type crossing wire laying system.

[0005] To achieve the above purpose, the technical solution adopted in this application is: an automatic opening and closing pulley for a flexible corridor type crossing wire laying system, including a pulley frame, a suspension frame, and a sealing plate. The suspension frame is installed at the top of the pulley frame and has an opening on the side. The first end of the sealing plate is hinged to the first end of the opening, and the second end of the sealing plate is cooperated with the second end of the opening through a lock component; when the bearing rope needs to cooperate with the suspension frame, the lock component is suitable for releasing the locking of the sealing plate, and then the sealing plate is suitable for rotating along the first end of the opening to open the opening; after the bearing rope cooperates with the suspension frame, the sealing plate is suitable for being locked at the second end of the opening under the action of the lock component.

[0006] Preferably, the lock component includes a lock rod and a lock groove. The lock rod is elastically and vertically slidably installed at the second end of the sealing plate, and the lock groove is vertically arranged at the second end of the opening; when locking the sealing plate, the lock rod is suitable for cooperating with the lock groove under the action of elastic force.

[0007] Preferably, the sealing plate has a "C" - shaped structure; when the sealing plate is locked at the opening, both ends of the sealing plate abut against both ends of the opening.

[0008] Preferably, an extension plate with an "L"-shaped structure is provided at the bottom end of the sealing plate; when the sealing plate is locked in the opening, the extension plate is suitable for covering and abutting against the side and bottom of the suspension frame.

[0009] Preferably, a wire-paying pulley is installed at the lower end of the pulley frame, and a wire-pressing pulley is installed at the upper end of the pulley frame in a vertical elastic sliding manner, and a clamping area is formed between the wire-pressing pulley and the wire-paying pulley; when the traction walking plate cooperates with the clamping area, the wire-pressing pulley is suitable for sliding and moving away from the wire-paying pulley under the drive of the traction walking plate; when the traction walking plate passes over the clamping area, the wire-pressing pulley is suitable for moving downward and approaching the wire-paying pulley under the action of gravity and elastic force, so that the pulled wire is located in the closed clamping area.

[0010] Preferably, a limiting component 1 is provided on the pulley frame; when the traction walking plate is not engaged with the clamping area, the wire pressing pulley is suitable for being locked in the first direction under the action of the limiting component 1, so that a distance is left between the wire pressing pulley and the wire releasing pulley; when the traction walking plate is engaged with the clamping area, the wire pressing pulley is suitable for sliding and disengaging from the limiting component 1, thereby releasing the lock on the wire pressing pulley in the first direction.

[0011] Preferably, a guide frame is installed on the wire pressing pulley, and the limiting component includes a limiting rod, and the limiting rod is elastically and horizontally slidably installed on the top of the pulley frame; when the traction walking plate is not matched with the clamping area, the bottom end of the guide frame is abutted against the limiting rod, thereby locking the wire pressing pulley in the first direction; when the traction walking plate is matched with the clamping area, the guide frame is suitable for moving up and away from the limiting rod, and then the limiting rod moves under the action of elastic force and is misaligned with the guide frame to release the lock on the first direction of the wire pressing pulley.

[0012] Preferably, a second limiting component is provided on the pulley frame; when the traction walking plate is not coordinated with the clamping area, the second limiting component is suitable for being in an unlocked state with the cooperation of the guide frame; when the traction walking plate passes over the clamping area, the second limiting component is in a locked state, thereby causing the wire pressing pulley to be locked in the second direction, and at this time the wire limit is locked in the clamping area.

[0013] Preferably, the second limiting component includes a limiting plate, which is elastically rotatably mounted on the top of the pulley frame and has a limiting groove at the bottom; when the traction walking plate is not matched with the clamping area, the guide frame is against the side of the limiting plate and away from the limiting groove; when the traction walking plate passes the clamping area, the guide frame is suitable for first moving to the extreme position along the first direction and disengaging from the limiting plate, and then the limiting plate rotates under the action of elastic force and makes the limiting groove match with the guide frame, thereby realizing locking of the wire pressing pulley in the second direction.

[0014] Preferably, a limiting component three is provided on the pulley frame; a baffle is installed on the top of the pulley frame, and the limiting component three includes a limiting wheel and a limiting frame, the limiting frame is elastically rotatably installed on the pulley frame, and the limiting wheel is rotatably installed at the bottom end of the limiting frame; the traction ropes on the traction walking plate are abutted and limited at the bottom end of the limiting wheel, and the traction ropes are suitable for buffering the tension under the elastic rotation of the limiting frame, and the baffle is suitable for limiting the maximum rotation angle range of the limiting frame.

[0015] Compared with the prior art, the present invention has the following advantages:

[0016] The utility model provides a suspension frame with an opening. When the load-bearing rope and the suspension frame need to cooperate, the locking plate can be released by the locking assembly first, so that the sealing plate is in a free state. The sealing plate is then rotated along the first end of the opening to open the opening, and the load-bearing rope can enter from the side of the suspension frame. Finally, the sealing plate is locked to the second end of the opening under the action of the locking assembly, so that the opening can be closed, so as to achieve safe cooperation between the load-bearing rope and the suspension frame, which is simple, convenient and fast. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0018] Figure 2 This is a schematic diagram of the structure of the utility model when the opening is closed.

[0019] Figure 3 This is a schematic diagram of the structure of the utility model when the opening is opened.

[0020] Figure 4 This is a schematic diagram of the initial state of the conductor pulley of the present invention.

[0021] Figure 5 This is an enlarged structural diagram of point A of the present invention.

[0022] Figure 6 This is a schematic diagram of the traction walking plate of the present invention passing through the conductor pulley.

[0023] Figure 7 This is an enlarged structural diagram of point B of the present invention.

[0024] Figure 8 This is a structural diagram of the traction walking plate of the utility model after passing through the conductor pulley.

[0025] Figure 9 This is an enlarged structural diagram of point C of the present invention.

[0026] Figure 10 This is a schematic diagram of the wire pressing pulley of the utility model after disassembly.

[0027] Figure 11 This is a schematic diagram of the initial structure of the wire pressing pulley, limiting component 1 and limiting component 2 of the present invention.

[0028] Figure 12 This is a schematic diagram of the state of the wire pressing pulley of the present invention when it moves upward.

[0029] Figure 13 This is a schematic diagram of the state of the wire pressing pulley of the present invention after moving downward.

[0030] Figure 14 This is a schematic diagram of the traction walking plate structure of the present utility model.

[0031] Figure 15 This is a schematic structural diagram of the first embodiment of the buffer assembly of the present utility model.

[0032] Figure 16 This is a structural diagram of the second embodiment of the buffer assembly of the present utility model.

[0033] Figure 17 This is a schematic diagram of the third structure of the limit assembly of the utility model.

[0034] Figure 18 This is an enlarged structural diagram of point D of the present invention.

[0035] In the figure: 1. Traction walking board; 101. Counterweight; 2. Pulley frame; 3. Wire-releasing pulley; 4. Wire-pressing pulley; 5. Suspension frame; 6. Closing plate; 7. Opening; 8. Locking assembly; 801. Locking rod; 802. Locking slot; 9. Extension plate; 10. Limiting assembly one; 1001. Limiting rod; 11. Limiting assembly two; 1101. Limiting plate; 12. Guide frame; 13. Limiting slot; 14. Pointed head; 1401. Wedge block; 15. Buffer assembly; 1501. Buffer plate; 16. Limiting assembly three; 1601. Limiting wheel; 1602. Limiting frame; 17. Baffle. DETAILED DESCRIPTION

[0036] Below, the present application is further described in conjunction with specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0037] In the description of this application, it should be noted that for directional words, such as the terms "center", "horizontal", "longitudinal", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and so on, the directions and positional relationships indicated are based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and cannot be understood as limiting the specific scope of protection of this application.

[0038] It should be noted that the terms "first", "second", etc. in the description and claims of this application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0039] One of the preferred embodiments of this application is as follows: Figures 1 to 18 As shown, an automatic opening and closing pulley of a flexible corridor-type spanning line-laying system includes a pulley frame 2, a suspension frame 5 and a sealing plate 6, wherein the suspension frame 5 is installed at the top of the pulley frame 2 and has an opening 7 on the side, the first end of the sealing plate 6 is hinged to the first end of the opening 7 (for example, the top of the opening 7), and the second end of the sealing plate 6 is matched with the second end of the opening 7 (for example, the bottom end of the opening 7) through a locking assembly 8.

[0040] It is understandable that when the load-bearing rope and the suspension frame 5 need to be matched, the locking plate 6 can be first unlocked by the locking assembly 8, thereby making the locking plate 6 free, and then the locking plate 6 is rotated along the first end of the opening 7 to open the opening 7, at which time the load-bearing rope can enter from the side of the suspension frame 5, that is, at this time, the end of the load-bearing rope needs to pass through the suspension frame 5 and match it. Of course, when the load-bearing rope is matched with the suspension frame 5, the locking plate 6 is closed and locked to the second end of the opening 7 under the action of the locking assembly 8, so that the opening 7 is closed, thereby achieving a safe match between the load-bearing rope and the suspension frame 5.

[0041] As a further description of the above embodiment, Figure 3 As shown, the locking assembly 8 includes a locking rod 801 and a locking slot 802. The locking rod 801 is elastically and vertically slidably installed on the second end of the sealing plate 6 (i.e., the bottom end of the sealing plate 6) (through a spring), and the locking slot 802 is vertically arranged at the second end of the opening 7.

[0042] It can be understood that when the sealing plate 6 is closed behind the opening 7, at this time, under the action of elastic force, the locking rod 801 will be inserted into the locking groove 802 and maintain the plug-in fit with the locking groove 802 under the action of elastic force, thereby realizing the locking of the sealing plate 6. Vice versa, if the locking rod 801 is pulled up under the action of an external force (such as holding by hand), the locking rod 801 will be separated from the locking groove 802, and at this time, the unlocking of the sealing plate 6 can be realized.

[0043] Furthermore, as Figure 2 and Figure 3 shown, the sealing plate 6 has a "C" - shaped structure; when the sealing plate 6 is locked to the opening 7, both ends of the sealing plate 6 abut against the (upper and lower) ends of the opening 7, thus ensuring the tight combination between the sealing plate 6 and the opening 7 and enhancing the overall stability. At the same time, the "C" - shaped structure of the sealing plate 6 can effectively resist external force impacts and improve stability.

[0044] Even further, an extension plate 9 with an "L" - shaped structure is provided at the bottom end of the sealing plate 6, and the sealing plate 6 and the extension plate 9 are integrally formed, such as by stamping, and the whole is approximately in an "S" - shaped structure; as Figure 2 shown, when the sealing plate 6 is locked to the opening 7, the extension plate 9 can wrap around and abut against the side and bottom of the hanging frame 5, thereby providing additional support and stability. This design not only enhances the closing effect on the opening 7 but also effectively prevents shaking and displacement caused by external forces, further improving the compactness and aesthetics of the overall structure.

[0045] In the prior art, generally, tension traction stringing is adopted for the overhead line crossing stringing, and combined with the protection of the crossing frame netting to ensure the safety of the crossing stringing. The existing main protection schemes are: (1) The scaffolding - type crossing frame method. According to the distance and height of the crossing object, bamboo, steel pipes, and aluminum pipes are used in advance to build on both sides of the crossing line, road, and railway according to the scaffolding mode. After building, an insulating material crossing net is arranged for protection. (2) The suspension - type crossing frame method. The crossing bearing cable and the netting are supported by temporary cross - arms on the tower or scaffolding built on the ground to form a crossing protection method. (3) The lattice - type crossing frame method. The main body or horizontal support of the lattice - type crossing frame is made of steel or aluminum alloy structure, and then a protection net is arranged to form a crossing protection. That is, the traditional crossing frame has high costs and high labor intensity, and the operators need to climb high, so there is a risk of falling from a height.

[0046] Therefore, in order to solve the above - mentioned existing problems, in one embodiment of the present application, as Figure 4As shown, a wire-paying pulley 3 is installed at the lower end of the pulley frame 2, and a wire-pressing pulley 4 is installed at the upper end of the pulley frame 2 in a vertical elastic sliding manner (through a spring), and a clamping area is formed between the wire-pressing pulley 4 and the wire-paying pulley 3; it should be known that when the wire-pressing pulley 4 is not subject to other forces, it is in a close state to the wire-paying pulley 3 under the action of gravity and elastic force, and the wire-pressing pulley 4 is located directly above the wire-paying pulley 3, and a clamping area is formed between the two.

[0047] It should be noted that the close state between the above-mentioned medium voltage line pulley 4 and the line-releasing pulley 3, that is, the two are very close to each other, can be regarded as a state of offsetting each other, but in fact they are not offsetting each other, because offsetting each other will cause a certain friction resistance to the rotation between the two.

[0048] It is understandable that in the initial state, that is, when the traction platform 1 and the clamping area are not engaged, the clamping area is in a closed state. When the line is being paid out, the traction rope on the traction platform 1 will pass through the clamping area. At this time, the clamping area can also limit the traction rope to prevent the traction rope from jumping or jumping out of the groove. When the traction rope pulls the traction platform 1 to engage with the clamping area, the line pressing pulley 4 is elastically installed. Therefore, the line pressing pulley 4 will slide upward under the pressure of the traction platform 1, that is, the line pressing pulley 4 will move up and away from the line paying pulley 3, so that the clamping area is opened to allow the traction platform 1 to pass through the clamping area. When the traction board 1 passes over (through) the clamping area, the pulled conductor (i.e., the transmission line) will be located in the corresponding groove on the wire-releasing pulley 3 (inside the lower end of the clamping area), and the wire-pressing pulley 4 will move downward under the action of gravity and (spring) elastic force until it is close to the wire-releasing pulley 3, so that the pulled conductor is located in the closed clamping area.

[0049] It can be seen that by providing an elastically installed wire-pressing pulley 4, before the wire is unfolded, the wire-pressing pulley 4 can limit and lock the traction rope to prevent the traction rope from jumping wires and jumping grooves; when the wire is unfolded, the wire-pressing pulley 4 is automatically moved up and opened under the action of the traction walking plate 1 to facilitate the wire unfolding operation; after the wire is unfolded, the wire-pressing pulley 4 can automatically move down and reset to achieve limit locking of the unfolded wire, thereby preventing the wire from jumping wires and jumping grooves; it effectively avoids safety accidents during the wire unfolding process, and the entire process does not require manual intervention in the operation of the wire-pressing pulley 4, saving manpower and improving work efficiency.

[0050] On the other hand, when the traction walking plate 1 cooperates with the wire pulley (i.e., the wire-releasing pulley 3 and the wire-pressing pulley 4), the traction walking plate 1 will be subjected to a large force, which may cause the wire to break. However, at this time, the wire-pressing pulley 4 will be pressed against the traction walking plate 1 under the action of the spring, so that the traction walking plate 1 will not suddenly fall over the wire pulley under the action of inertia, thereby further improving safety.

[0051] In the above operation process, since the movement of the wire pressing pulley 4 is based on the squeezing effect of the traction board 1, the shape and structure of the front end of the traction board 1 will have an important influence on the squeezing movement of the pulley. Figure 1 as well as Figure 14 As shown, a pointed head 14 is provided at the front end of the traction walking plate 1. When the traction walking plate 1 cooperates with the clamping area, the pointed head 14 of the traction walking plate 1 will first come into contact with the wire-pressing pulley 4 and the wire-releasing pulley 3, that is, the pointed head 14 can easily enter the gap between the wire-pressing pulley 4 and the wire-releasing pulley 3. After the traction walking plate 1 continues to move, the wire-pressing pulley 4 will be more easily moved up under the squeezing cooperation of the pointed head 14. Therefore, the design of the pointed head 14 not only improves the traction efficiency, but also reduces the wear on the two pulleys during the traction process, thereby extending the service life of the device.

[0052] The pointed portion 14 has various structural forms, including but not limited to the following two:

[0053] Structure 1 (such as Figure 14 As shown): the pointed portion 14 is a wedge-shaped block 1401, which has a triangular block structure; when the traction walking plate 1 cooperates with the clamping area, the wire pressing pulley 4 can slide upward under the wedge-shaped extrusion cooperation of the wedge-shaped block 1401.

[0054] Structure 2 (not shown): The pointed portion 14 may be a bullet-shaped structure or a conical structure.

[0055] It should be noted that when using Structure 1, the front end of the wedge block 1401 can be configured to be wider and narrower. Therefore, when the wedge block 1401 is engaged, it can easily enter the gap between the wire pressing block 4 and the wire paying block 3, and the stability of the three is improved. However, if it is configured as a conical structure, because the wire pressing block 4 and the wire paying block 3 are both circular structures, they will contact and engage with the conical structure in a curved manner, and thus the stability is not good during engagement. Therefore, the preferred form is Structure 1.

[0056] Based on the above embodiment, it should be understood that when the traction platform 1 initially cooperates with the wire pressing pulley 4 and the wire paying-off pulley 3, if a larger gap is left between the wire pressing pulley 4 and the wire paying-off pulley 3, the traction platform 1 can be pulled more easily and smoothly. Of course, this gap cannot be too large, because if it is too large, the traction rope of the traction platform 1 will be prone to the risk of jumping; therefore, the size of the gap can be set by those skilled in the art according to actual conditions.

[0057] Therefore, in this implementation, Figure 4 and Figure 5 As shown, a limit assembly 10 can be provided on the pulley frame 2. It is understood that when the traction track 1 and the clamping area are not engaged, the wire pressing pulley 4 can be locked in the first direction under the action of the limit assembly 10. In other words, under the action of the limit assembly 10, in the initial state of the entire wire pulley, a gap will remain between the wire pressing pulley 4 and the wire payout pulley 3. This gap is to facilitate the initial engagement with the traction track 1.

[0058] It should be noted here that the first direction is the direction in which the wire pressing pulley 4 moves downward along the pulley frame 2 and approaches the wire paying-out pulley 3. Similarly, the second direction is the direction in which the wire pressing pulley 4 moves upward along the pulley frame 2 and away from the wire paying-out pulley 3.

[0059] When the traction track 1 cooperates with the clamping area, the wire pressing pulley 4 will move in the second direction under the action of the traction track 1, and the wire pressing pulley 4 will disengage from the limit assembly 10, thereby releasing the limit assembly 10 from locking the wire pressing pulley 4 in the first direction. In other words, after the wire pressing pulley 4 moves downward in the first direction under the action of elastic force and gravity, the wire pressing pulley 4 can move downward to the limit distance, so that the wire pressing pulley 4 and the wire paying-out pulley 3 return to a state of approximately contact, thereby limiting the position of the pulled wire.

[0060] As a further description of the above embodiment: Figure 5 and Figure 7 As shown, a guide frame 12 is installed on the wire pressing pulley 4, and the limiting component 10 includes a limiting rod 1001, and the limiting rod 1001 is elastically slidably installed at the top position of the pulley frame 2 (through a spring).

[0061] It is understandable that when the traction plate 1 is not engaged with the clamping area, that is, in the initial state, the bottom end of the guide frame 12 is engaged with the limit rod 1001, that is, the limit rod 1001 will prevent the guide frame 12 from moving downward, thereby locking the wire pressing pulley 4 in the first direction, but will not lock the wire pressing pulley 4 in the second direction. When the traction plate 1 is engaged with the clamping area, that is, at this time, the guide frame 12 will move upward synchronously with the wire pressing pulley 4, and then the guide frame 12 will separate from the limit rod 1001. At this time, the limit rod 1001 will move under the elastic force of the spring and displace with the guide frame 12, as shown in FIG. Figure 12 As shown, the locking of the first direction of the wire pressing pulley 4 can be released.

[0062] Furthermore, in order to improve the stability of the limiting rod 1001 when it cooperates with the guide frame 12, a limiting block can be provided at the end of the limiting rod 1001. For example, the limiting block can be spot-welded to the end of the limiting rod 1001 through a nut. Figure 5 As shown, when the two cooperate, the limit block and the side of the guide frame 12 are abutted against each other, thereby limiting the axial movement of the limit rod 1001, thereby greatly improving the stability of the limit rod 1001 when cooperating with the guide frame 12.

[0063] We know that after the traction track 1 passes through the conductor pulley, the conductor will be locked in the clamping area under the action of the wire pressing pulley 4. However, since the wire pressing pulley 4 is an elastic sliding installation, the limiting stability of the conductor is not very good. For example, during the process of paying out the conductor, it is easy for the conductor tension to suddenly increase, thereby causing the conductor to be tightened and straightened, that is, the conductor will easily move upward and squeeze the wire pressing pulley 4 (the spring limiting force on the wire pressing pulley 4 is not very large, because if the spring limiting force is too large, it will interfere with the movement of the traction track 1). Therefore, the wire pressing pulley 4 will easily move upward and away from the wire paying out pulley 3 under the action of the conductor, making the conductor prone to jumping in this situation.

[0064] Therefore, in order to solve the above technical problems, in one embodiment of the present application, Figure 5 and Figure 9 As shown, a second limit assembly 11 may also be provided on the pulley frame 2. It is understood that when the traction platform 1 is not engaged with the clamping area, i.e., in the initial state, the limit assembly is in an unlocked state with the cooperation of the guide frame 12. The unlocked state means that the second limit assembly 11 has no effect on the guide frame 12; the purpose is to prevent the limit assembly 11 from interfering with the movement of the guide frame 12 when the traction platform 1 passes through the clamping area.

[0065] When the traction plate 1 passes the clamping area, the limit component 2 11 will be in a locked state. The locked state means that the guide frame 12 will move to the limit distance along the first direction (downward) at this time, and the limit component 2 11 will work to lock the guide frame 12 in the second direction (upward), thereby locking the wire pressing pulley 4 in the second direction. It should be known that since the guide frame 12 moves to the limit distance in the first direction, it also achieves self-locking in the first direction, thereby locking the wire pressing pulley 4 in the first direction and the second direction, so that the wire in the clamping area can be "hardly" locked, thereby avoiding the situation where the wire jumps in special circumstances.

[0066] As a further description of the above embodiment: Figure 7 、 Figure 12 and Figure 13 As shown, the limiting component 2 11 includes a limiting plate 1101, a limiting groove 13 is set at the bottom end of the limiting plate 1101, and the limiting plate 1101 is elastically rotatably installed on the top of the pulley frame 2 (through a spring or a torsion spring), and the limiting plate 1101 is located above the limiting rod 1001.

[0067] It is understandable that when the traction board 1 is not matched with the clamping area, in the initial state, as shown in FIG. Figure 5 and Figure 11 As shown, at this time, the guide frame 12 is against the side of the limiting plate 1101, and the guide frame 12 is away from the limiting groove 13, and at this time the elastic member (spring or torsion spring) on ​​the limiting plate 1101 is in an energy storage state.

[0068] When the walking plate 1 is pulled over the clamping area, the guide frame 12 will first move in the first direction (downward) to the limit position. It should be noted that, as mentioned above, since the guide frame 12 is initially "raised" by the limit rod 1001, the guide frame 12 will move down lower than the initial position, and then will be out of cooperation with the limit plate 1101, and the limit plate 1101 will rotate under the elastic force of the elastic member, as shown in FIG. Figure 13 As shown, the rotating limit groove 13 will correspond to the guide frame 12, that is, if the guide frame 12 moves up at this time, it will be stuck in the limit groove 13 on the limit plate 1101, thereby locking the wire pressing pulley 4 in the second direction.

[0069] It should be noted that, in the initial state, although the wire pressing block 4 is locked in the first direction by the action of the limiting assembly 10, the wire pressing block 4 is limited in the second direction by the elastic force of the spring. Before the traction track 1 passes through the wire guide block, when the traction rope of the traction track 1 is in the clamping area, if the traction rope is subjected to a large tension at this time, it will easily drive the wire pressing block 4 to move upward, thereby destroying the initial state of the wire pressing block 4, that is, causing the limiting assembly 10 and the limiting assembly 2 11 to be triggered prematurely, thereby causing interference between the traction track 1 and the wire guide block.

[0070] Therefore, in order to solve the above technical problems, one of the embodiments of the present application is as follows: Figure 17 As shown, a third limiting assembly 16 can be provided at the top of the pulley frame 2. When the traction platform 1 is not engaged with the clamping area, the third limiting assembly 16 can limit the traction rope of the traction platform 1 so that the traction rope is away from the wire pressing pulley 4. In other words, during the traction process, the traction rope will not contact the wire pressing pulley 4.

[0071] As a further description of the above embodiment: Figure 17 and Figure 18 As shown, a baffle 17 is installed at the top of the pulley frame 2, and the limiting component 16 includes a limiting wheel 1601 and a limiting frame 1602, wherein the side of the limiting frame 1602 is elastically rotatably installed on the pulley frame 2 (can be through a spring or a torsion spring), and the limiting wheel 1601 is rotatably installed on the bottom end of the limiting frame 1602.

[0072] It is understandable that when the traction rope passes through the wire pulley, the traction rope will hit the bottom end of the limiting wheel 1601, thereby limiting the traction rope. At the same time, the limiting wheel 1601 can also play a guiding role for the traction rope. During the traction process of the wire, the tension of the traction rope will change. At this time, the limiting frame 1602 will rotate, and the elastic member (spring or torsion spring) can buffer the change in the tension of the traction rope, thereby greatly improving the stability of the traction process. Of course, the limiting frame 1602 also has a maximum rotation angle range, otherwise the traction rope will move up and contact the wire pressing pulley 4. Figure 18 As shown, when the top of the limit frame 1602 is against the baffle 17, the limit frame 1602 will rotate upward to the limit position. Of course, the traction rope will not touch the wire pressing pulley 4 at this time.

[0073] After the traction plate 1 passes through the conductor pulley, the limiting wheel 1601 will be pressed against the traction plate 1 under the action of elastic force, thereby buffering the inertial impact force after the traction plate 1 is separated from the conductor pulley, thereby improving the stability of the two after separation.

[0074] In one embodiment of the present application, Figure 15 and Figure 16 As shown in Figure 16 , we know that when the traction walking board 1 is separated from the conductor pulley, the balance weight 101 on the traction walking board 1 will quickly rotate downward under the action of gravity after crossing the conductor pulley, and then it will easily collide with the pulley frame 2 under the driving of inertia force and other acting forces. Therefore, a buffer component 15 can be provided between the traction walking board 1 and the pulley frame 2, so as to absorb the impact force between the balance weight 101 and the pulley frame 2, and reduce the impact and damage caused by the collision.

[0075] Specifically, the buffer component 15 includes a buffer plate 1501, and there are various installation methods for the buffer plate 1501, including but not limited to the following three:

[0076] Method 1: As shown in Figure 15 , the buffer plate 1501 can be elastically and slidably installed at the upper end position of the balance weight 101 through a spring. Figure 15 As shown in Figure 15 , the buffer plate 1501 can be elastically and slidably installed at the upper end position of the balance weight 101 through a spring.

[0077] Method 2: As shown in Figure 16 , the buffer plate 1501 can be elastically and slidably installed at the lower end position of the pulley frame 2 through a spring. Figure 16 As shown in Figure 16 , the buffer plate 1501 can be elastically and slidably installed at the lower end position of the pulley frame 2 through a spring.

[0078] It should be noted that both methods can meet the actual needs, and those skilled in the art can choose according to the actual situation. However, for the actual situation, when conducting wire laying, there must be multiple sets of wire laying pulleys 3, and generally only one traction walking board 1 is needed. Therefore, considering cost and actual application, the buffer plate 1501 is preferably installed on the traction walking board 1, that is, the form of Method 1 is preferably adopted.

[0079] In one embodiment of the present application, as shown in Figure 6 , the pulley frame 2 is integrally in a rectangular structure, and the pulley frame 2 includes a pair of U-shaped frames. The wire pressing pulley 4 is installed on the upper U-shaped frame, and the wire laying pulley 3 is installed on the lower U-shaped frame. The two U-shaped frames can be detachably installed through bolts, so as to realize the quick disassembly and assembly of the pulley frame 2. Figure 6 In one embodiment of the present application, as shown in Figure 6 , the pulley frame 2 is integrally in a rectangular structure, and the pulley frame 2 includes a pair of U-shaped frames. The wire pressing pulley 4 is installed on the upper U-shaped frame, and the wire laying pulley 3 is installed on the lower U-shaped frame. The two U-shaped frames can be detachably installed through bolts, so as to realize the quick disassembly and assembly of the pulley frame 2.

[0080] The working principle of the present utility model is:

[0081] As shown in Figure 1 , the flexible corridor protection system is composed of a bearing rope, a guiding rope, an interval connecting rope, a traction rope, a traction walking board 1, an automatic opening and closing pulley, a tensioning mechanism, an anchoring mechanism, etc. It is applicable to the spanning wire laying of newly built lines, and is more applicable to the operation of replacing the ground wire and overhead wire of old lines; and the automatic opening and closing pulley (i.e., on the wire pressing pulley 4 and the wire laying pulley 3) is designed with a double-layer multi-wheel structure to facilitate the traction of multiple-strand conductors. Figure 1 As shown in Figure 1 , the flexible corridor protection system is composed of a bearing rope, a guiding rope, an interval connecting rope, a traction rope, a traction walking board 1, an automatic opening and closing pulley, a tensioning mechanism, an anchoring mechanism, etc. It is applicable to the spanning wire laying of newly built lines, and is more applicable to the operation of replacing the ground wire and overhead wire of old lines; and the automatic opening and closing pulley (i.e., on the wire pressing pulley 4 and the wire laying pulley 3) is designed with a double-layer multi-wheel structure to facilitate the traction of multiple-strand conductors.

[0082] Device preparation: The device of the crossing protection system needs to be calibrated according to the construction working conditions such as the crossing distance, traction wire specifications, number of traction sub-wires, and location of temporary anchor points. Then, devices of corresponding specifications and quantities should be prepared, and other tension traction equipment should be implemented.

[0083] Laying out the load-bearing rope: Use a drone to pull a guide rope with a diameter of 4-6mm from the tower on one side of the span to the tower on the opposite side, and then use a traction device such as a capstan to drag the load-bearing rope with a diameter of 12-16mm through the guide rope. When the load-bearing rope is dragged and laid out, a transfer rope is attached to temporarily fix it to the tower on the opposite side. The two ends of the load-bearing rope are anchored and locked on the ground near the crossarms of the towers on both sides or through a steering pulley.

[0084] Connecting the flexible corridor pulleys: Connect the automatic closing pulleys on the ground with connecting ropes of equal length, 10m or 15m apart. Connect the connecting ropes of equal length to the connecting rings on the top and bottom of the automatic opening and closing pulleys. Connect the anchoring ropes, which are longer than the distance between the anchor points, to the connecting rings of the front and rear automatic opening and closing pulleys.

[0085] Flexible corridor layout: The traction rope is passed through the connected automatic closing pulley and the automatic opening and closing pulley anchor connection rope to form a buckle, and is connected to the transfer rope that is pre-anchored to the opposite tower by the load-bearing rope. After the automatic opening and closing pulleys are hung on the load-bearing rope in sequence, the fixed connection rope of the pulley at the rear end of the pulley string is fixed on the tower or diverted to the bottom of the tower or on the ground. Then, the traction rope and the automatic opening and closing pulley are pulled by manual or mechanical equipment using the transfer rope. After the automatic opening and closing pulleys are evenly distributed on the load-bearing rope, the anchor connection rope of the front pulley is also tensioned on the cross arm or U-shaped hanging ring on the tower, thus forming a flexible corridor-style spanning protection channel in the air.

[0086] During a cross-line payout operation, after the traction rope passes through the conductor pulley, the front end of the traction rope is connected to a capstan or traction machine, and the rear end is connected to the (intelligent) traction platform 1. The (intelligent) traction platform 1 guides the conductor through the pulley. The tension of the deployed conductor is controlled by a tensioner. The intelligent traction platform 1 can monitor the traction force of each sub-conductor, the balance posture of the platform, and the video of the front and rear ends of the traction platform 1 in real time, facilitating on-site command and control of the speed and tension of the traction and tension equipment. Of course, the intelligent traction platform 1 is also common knowledge known to those skilled in the art.

[0087] (1) In the initial state, that is, when the traction board 1 is not matched with the wire pulley, Figure 5 and Figure 11As shown, at this time, the guide frame 12 overlaps and abuts against the limiting rod 1001, that is, the limiting rod 1001 limits the guide frame 12 in the first release direction, so that there is a certain distance between the wire pressing pulley 4 and the wire releasing pulley 3, and at the same time, the guide frame 12 also abuts against the side of the limiting plate 1101. The limiting wheel 1601 limits the traction rope to prevent the traction rope from acting on the wire pressing pulley 4 to move up. (II) As Figure 1 As shown, when the traction board 1 cooperates with the wire pulley, the wedge block 1401 of the traction board 1 will enter the gap between the wire pressing pulley 4 and the wire releasing pulley 3, and then under the wedge-shaped extrusion, the wire pressing pulley 4 will slide upward. Figure 7 and Figure 12 As shown, when the guide frame 12 is separated from the limit rod 1001, the limit rod 1001 will move under the elastic force of the spring and be dislocated with the guide frame 12, so as not to interfere with the subsequent downward movement of the guide frame 12. (III) When the traction board 1 is separated from the wire pulley, the wire pressing pulley 4 will slide downward under the action of gravity and elastic force, as shown in FIG. Figure 9 as well as Figure 13 As shown, when the guide frame 12 moves down to the limit position, the guide frame 12 will be disengaged from the limit plate 1101, and the limit plate 1101 will rotate under the elastic force of the elastic member, as shown in FIG. Figure 13 As shown, the rotating limit slot 13 will correspond to the guide frame 12, and then the guide frame 12 will be stuck in the limit slot 13 to achieve locking of the wire pressing pulley 4 in the second direction. Since the guide frame 12 also moves to the limit distance in the first direction, it also achieves self-locking in the first direction, so that the wire pressing pulley 4 is locked in the first direction and the second direction, and the wire can be "hardly" locked in the clamping area, which can avoid the phenomenon of wire jumping and slot jumping during the wire laying process, and thus can also prevent the wire from jumping and twisting during traction. At the same time, this structure can not only prevent wire jumping, but also prevent the traction board 1 from retracting and falling onto the crossing running line or highway or railway when the line is broken or dropped.

[0088] It is necessary to add that:

[0089] Intelligent monitoring and early warning: The intelligent traction board 1 has the functions of real-time collection of front and rear videos of the traction board 1 and monitoring of the traction force of the sub-conductor, the inclination posture of the board, the moving position, etc., and can perform early warning defense, thereby avoiding accidents such as the traction board 1 turning over and the conductor twisting, and also avoiding the occurrence of over-traction tower collapse accidents caused by obstruction.

[0090] Protection by protective net: The flexible corridor span protection system is equipped with automatic opening and closing pulleys every 10-15 meters. The pulleys are connected and positioned with interval connecting ropes. In order to prevent the line from breaking or falling during the traction spanning and laying out, a protective net is installed between the interval connecting ropes on both sides of the lower part of the pulley. When an accident occurs, the traction walking board 1, wires, etc. can be supported in the net.

[0091] The advantages of the technical solution of this application compared with the existing technology are as follows:

[0092] Reduce construction costs: The cost of building traditional crossing frames is relatively high, generally ranging from more than 100,000 yuan to several hundred thousand yuan. The investment of this protection system is one-time and reusable, so a large amount of cost of building crossing frames can be saved.

[0093] Reduce operational risks: a. The construction of traditional crossing frames requires a large number of workers working at heights, and it is difficult to effectively protect workers working at heights during the construction process, so there is a risk of falling from heights; currently, most crossing frames are built using bamboo, and there is no calculation basis for the mechanical properties of bamboo, and bamboo is prone to mold and cracking, so there is a risk; b. This protection system uses devices that can be verified and tested to reduce risks; c. This crossing protection system is set up close to the position where the conductors are laid, so when a line drop or break occurs, the impact force is relatively small; d. The pulleys arranged in this crossing protection system are spaced 10-15M apart, so when a line drop or break occurs, the automatic opening and closing pulley is in a closed state, so the traction walking plate 1 cannot retreat, thereby reducing the falling length and impact force, and preventing line drop or break from affecting the operation of the energized lines and roads and railways below.

[0094] Improve work efficiency: a. The use of this span protection system can establish an effective and safe span protection channel within one to two hours. Compared with the traditional span frame and net protection method, the construction period is reduced by several days, thereby improving work efficiency; b. Compared with the traditional span frame construction, the establishment of this span protection system is not affected by the on-site terrain environment. The span protection channel is quickly established at a high altitude using the iron towers on both sides of the span, thus ensuring the construction progress; c. The span protection system is set up close to the installation position of the conductor. Compared with the traditional span frame protection, it is higher in height and is easier to pass the approval of the highway, railway and power line operation management departments, thereby improving the construction progress.

[0095] The above describes the basic principles, main features, and advantages of the present application. Those skilled in the art should understand that the present application is not limited to the above-described embodiments. The above-described embodiments and the specification merely illustrate the principles of the present application. Various changes and improvements may be made to the present application without departing from the spirit and scope of the present application. These changes and improvements fall within the scope of the present application for which protection is sought. The scope of protection claimed by the present application is defined by the appended claims and their equivalents.

Claims

1. An automatic opening and closing pulley for a flexible corridor-type spanning pay-off system, characterized in that: Comprising: A pulley frame; A suspension frame, which is installed at the top of the pulley frame and has an opening on the side; And A sealing plate, the first end of the sealing plate is hinged to the first end of the opening, and the second end of the sealing plate is cooperated with the second end of the opening through a locking component; when the load-bearing rope needs to be cooperated with the suspension frame, the locking component is adapted to release the locking of the sealing plate, and then the sealing plate is adapted to rotate along the first end of the opening and open the opening; after the load-bearing rope is cooperated with the suspension frame, the sealing plate is adapted to be locked at the second end of the opening under the action of the locking component.

2. The automatic opening and closing pulley of the flexible corridor-type spanning wire-laying system according to claim 1, characterized in that: The locking component includes a locking rod and a locking groove, the locking rod is elastically and vertically slidably installed at the second end of the sealing plate, and the locking groove is vertically arranged at the second end of the opening; when locking the sealing plate, the locking rod is adapted to cooperate with the locking groove under the action of elastic force.

3. The automatic opening and closing pulley of the flexible corridor-type spanning wire-laying system according to claim 2, characterized in that: The sealing plate has a "C" - shaped structure; when the sealing plate is locked at the opening, both ends of the sealing plate abut against both ends of the opening.

4. The automatic opening and closing pulley of the flexible corridor-type spanning wire-paying system according to claim 3 is characterized in that: An extension plate with an "L" - shaped structure is arranged at the bottom end of the sealing plate; when the sealing plate is locked at the opening, the extension plate is adapted to wrap around and abut against the side and bottom of the suspension frame.

5. The automatic opening and closing pulley of the flexible corridor-type spanning wire-paying system according to any one of claims 1 to 4, characterized in that: A wire - paying - out pulley is installed at the lower end of the pulley frame, and a wire - pressing pulley is elastically and vertically slidably installed at the upper end of the pulley frame, and a clamping area is formed between the wire - pressing pulley and the wire - paying - out pulley; when the traction runner is cooperated with the clamping area, the wire - pressing pulley is adapted to slide under the drive of the traction runner and move away from the wire - paying - out pulley; after the traction runner passes over the clamping area, the wire - pressing pulley is adapted to move downward and approach the wire - paying - out pulley under the action of gravity and elastic force, so that the traction wire is located in the closed clamping area.

6. The automatic opening and closing pulley of the flexible corridor-type spanning wire-laying system according to claim 5, characterized in that: A first limiting component is arranged on the pulley frame; when the traction runner is not cooperated with the clamping area, the wire - pressing pulley is adapted to be locked in a first direction under the action of the first limiting component, so that a distance is left between the wire - pressing pulley and the wire - paying - out pulley; when the traction runner is cooperated with the clamping area, the wire - pressing pulley is adapted to slide and disengage from the first limiting component, thereby releasing the locking of the wire - pressing pulley in the first direction.

7. The automatic opening and closing pulley of the flexible corridor-type spanning wire-paying system according to claim 6, characterized in that: A guiding frame is installed on the wire - pressing pulley, and the first limiting component includes a limiting rod, the limiting rod is elastically and horizontally slidably installed at the top of the pulley frame; when the traction runner is not cooperated with the clamping area, the bottom end of the guiding frame abuts against the limiting rod, so that the wire - pressing pulley is locked in the first direction; when the traction runner is cooperated with the clamping area, the guiding frame is adapted to move upward and away from the limiting rod, and then the limiting rod moves under the action of elastic force and is misaligned with the guiding frame, so as to release the locking of the wire - pressing pulley in the first direction.

8. The automatic opening and closing pulley of the flexible corridor-type spanning wire-laying system according to claim 7, characterized in that: A second limiting component is provided on the pulley frame; when the traction walking plate is not coordinated with the clamping area, the second limiting component is suitable for being in an unlocked state with the cooperation of the guide frame; when the traction walking plate passes over the clamping area, the second limiting component is in a locked state, thereby causing the wire pressing pulley to be locked in the second direction, and at this time the wire limit is locked in the clamping area.

9. The automatic opening and closing pulley of the flexible corridor-type spanning wire-paying system according to claim 8, characterized in that: The second limiting component includes a limiting plate, which is elastically rotatably mounted on the top of the pulley frame and has a limiting groove at the bottom; when the traction walking plate is not matched with the clamping area, the guide frame is against the side of the limiting plate and away from the limiting groove; when the traction walking plate passes the clamping area, the guide frame is suitable for first moving to the extreme position along the first direction and disengaging from the limiting plate, and then the limiting plate rotates under the action of elastic force and makes the limiting groove match with the guide frame, thereby realizing locking of the wire pressing pulley in the second direction.

10. The automatic opening and closing pulley of the flexible corridor-type spanning wire-paying system according to claim 9, characterized in that: A limiting component three is provided on the pulley frame; a baffle is installed on the top of the pulley frame, and the limiting component three includes a limiting wheel and a limiting frame, the limiting frame is elastically rotatably installed on the pulley frame, and the limiting wheel is rotatably installed at the bottom end of the limiting frame; the traction ropes on the traction walking plate are abutted against and limited at the bottom end of the limiting wheel, and the traction ropes are suitable for buffering the tension under the elastic rotation of the limiting frame, and the baffle is suitable for limiting the maximum rotation angle range of the limiting frame.

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