Traction device and apparatus for pay-off trolley

Abstract

Provided are a traction device and traction apparatus for a pay-off trolley. The traction device comprises a moving mechanism (100) and a limiting mechanism (200), wherein the moving mechanism is configured to connect a winch (600), is movably connected to a busbar (500) and can move in the length direction of the busbar; and the limiting mechanism acts on the busbar and the moving mechanism, and is configured to limit the moving mechanism when the moving mechanism moves to a predetermined position on the busbar, so as to prevent the moving mechanism from moving close to the limiting direction of a pay-off trolley. The traction device for a pay-off trolley can reduce a large number of disassembling and assembling and carrying operations on the winch, thus increasing the pay-off efficiency.

Description

Traction device and equipment of wire-paying trolley

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to the Chinese patent application filed with the China Patent Office on September 5, 2023, with application number 202311136485.2, and invention name “Traction device and equipment for wire-laying trolley”, all contents of which are incorporated by reference into this application. Technical Field

[0003] The present application relates to the field of rail transportation technology, and in particular to a traction device and equipment for a wire-laying trolley. Background Art

[0004] Currently, the traditional third-rail power supply method is used for urban transportation networks such as subways and light rail in most areas of China. Recently, a new power supply method has emerged in some areas: rigid catenary power supply. Article 5.2 of the "Trial Procedure for Partial Replacement of Contact Wires for Rigid Catenary Systems" (GDY / QW-WXⅡ08-042-011) stipulates that partial replacement or installation of contact wires in rigid catenary systems should be performed using tools such as a pay-out trolley. To facilitate orderly contact wire arrangement, the contact wires are typically housed within a busbar. As shown in Figure 1, this busbar consists of a top plate and two side plates. The outer sides of the two side plates are formed with two wing plates, the lower portions of which are bent inward to form a bayonet. The upper portions of the wing plates are flat, and the lower portions have wheel grooves. The contact wires are housed within the space enclosed by the top plate and the side plates. To facilitate the removal and installation of the contact wires from the busbar, the running wheels of the pay-out trolley overlap the wing plates, and two pairs of front and rear tensioning wheels are embedded in the wheel grooves at the lower portions of the two wing plates. When the contact wire needs to be disassembled, the distance between the two tensioning wheels of each pair of tensioning wheels is increased to enlarge the opening of the bayonet. The contact wire in the bus will then fall out of the bayonet or the contact wire will enter the bus from the outside of the bus through the buckle, thereby realizing the disassembly and assembly of the contact wire.

[0005] To continuously remove and install the contact wire using the trolley, it must be pulled and moved along the busbar. Currently, construction sites often use a winch installed a certain distance in the direction of the trolley's travel to pull the trolley. When the trolley approaches the winch, the winch is removed and moved a certain distance away from the trolley. The winch is then reattached to the busbar and the trolley continues to pull. This current trolley pulling method involves numerous repetitive operations, including removing, installing, and moving the winch, resulting in low payout efficiency.

[0006] Application Contents

[0007] The purpose of this application is to make up for the shortcomings of the existing technology and provide a traction device and equipment for a wire-releasing trolley. The traction device of the wire-releasing trolley eliminates the disassembly and transportation operations of the winch unit, thereby improving the wire-releasing efficiency.

[0008] In order to solve the above technical problems, this application adopts the following technical solutions:

[0009] In a first aspect, the present application provides a traction device for a wire-paying trolley, comprising a movable mechanism and a limiting mechanism. The movable mechanism is connected to a capstan, movably connected to a busbar, and movable along the length of the busbar. The limiting mechanism acts on the busbar and the movable mechanism, restraining the movable mechanism when it reaches a predetermined position on the busbar, preventing it from moving in a limiting direction toward the wire-paying trolley.

[0010] Furthermore, the limiting mechanism is a one-way limiting mechanism, which is used to prevent the movable mechanism from moving relative to the bus in the limiting direction and allow the movable mechanism to move relative to the bus in a direction opposite to the limiting direction.

[0011] Furthermore, the traction device of the above-mentioned wire-releasing trolley also includes a one-way limit release component, which is connected to the fixed part of the moving mechanism and is used to act on the one-way limit mechanism so that the one-way limit mechanism allows the moving mechanism to move toward the limit direction relative to the bus.

[0012] Furthermore, the one-way limiting mechanism includes a limiting assembly, and the limiting assembly includes a limiting support, a limiting swing arm and a pressing member. The limiting support is used to be embedded in the wheel groove on the lower side of the wing of the bus when the mobile mechanism is movably connected to the bus. The first end of the limiting swing arm is rotatably connected to the fixed part of the mobile mechanism, and the second end is rotatably connected to the limiting support. The second end of the limiting swing arm is used to be driven by the limiting support to deflect away from the vertical direction toward the limiting direction under the squeezing action of the bus on the limiting support; when the limiting swing arm is perpendicular to the wing of the bus, the direction in which the length of the limiting swing arm extends is the vertical direction. The pressing member is connected to the fixed part of the mobile mechanism, and is used to act on the limiting swing arm and apply a force opposite to the limiting direction to the limiting swing arm, so that the limiting support is pressed against the bus.

[0013] Furthermore, the pressing member includes an elastic pressing member, and when the limiting swing arm deflects toward the limiting direction, the elastic pressing member is deformed under the action of the limiting swing arm.

[0014] Furthermore, the traction device of the above-mentioned wire-releasing trolley also includes an elastic pressing release component, which is connected to the fixed part of the movable mechanism and is used to resist the elastic pressing member from pushing the limiting support member and / or the limiting swing arm toward the limiting direction, so that the one-way limiting mechanism allows the movable mechanism to move toward the limiting direction relative to the bus.

[0015] Furthermore, the position-limiting support member includes a rigid abutting member, and the rigid abutting member includes:

[0016] a rotating shaft rotatably connected to the fixed portion of the moving mechanism;

[0017] a driving member, acting on the rotating shaft, for driving the rotating shaft to rotate;

[0018] An eccentric arc-shaped disk is fixedly connected to the rotating shaft and is located on the side of the limiting swing arm close to the limiting direction. The eccentric arc-shaped disk has an arc-shaped side surface, and the axis of the arc-shaped side surface is parallel to the axis of the rotating shaft. The eccentric arc-shaped disk is used to rotate under the drive of the rotating shaft, and during the rotation, the arc-shaped side surface contacts the limiting swing arm until it is pressed against the limiting swing arm.

[0019] Furthermore, the driving member is a handheld rotating arm installed on the rotating shaft.

[0020] Furthermore, the driving member is a motor installed on the rotating arm.

[0021] Furthermore, the upper surface of the position-limiting support member for contacting the busbar is provided with serrations, and the serrations are inclined toward the position-limiting direction.

[0022] Furthermore, the serrations cover part or all of the upper surface of the position-limiting swing arm.

[0023] Furthermore, the limiting assembly includes a limiting support member, at least two limiting swing arms and at least two pressing members, at least two limiting swing arms are arranged along the limiting direction, and each pressing member acts on at least one limiting swing arm.

[0024] Furthermore, the one-way limiting mechanism includes two groups of limiting components, and the limiting support members of the two groups of limiting components correspond to and are respectively embedded in the wheel grooves on the lower sides of the two wing plates of the busbar.

[0025] Furthermore, the maximum distance between the axis of the rotational connection between the limiting swing arm and the moving mechanism and the upper surface of the limiting support for contacting the busbar is L 1maxThe distance between the axis of the rotational connection between the limiting swing arm and the moving mechanism and the contact surface of the moving mechanism for contacting the busbar is L2, the thickness of the wing plate of the busbar at the wheel groove is L3, L 1max +L3>L2.

[0026] Furthermore, the moving mechanism includes a frame and two sets of guide wheels, the guide wheels are rotatably connected to the frame, and the two sets of guide wheels are used to be respectively hung on the wing plates on both sides below the bus and roll along the wing plates.

[0027] Furthermore, the guide wheel is movably connected to the frame, and the guide wheel can move relative to the frame along the direction of the guide wheel axis.

[0028] Furthermore, the moving assembly also includes a guide shaft, which is connected to the guide wheel and is threadedly connected to the frame.

[0029] Furthermore, the minimum axial distance between the two groups of guide wheels is greater than or equal to the maximum distance on the busbar perpendicular to the side plate direction.

[0030] Furthermore, the moving assembly further includes a guide driving member, which is connected to the guide wheel and is used to drive the guide wheel to rotate.

[0031] Furthermore, the frame includes two mounting plates arranged in parallel and a connecting piece connecting the two mounting plates, and the two groups of guide wheels are respectively installed on the two mounting plates.

[0032] In the second aspect, the present application also provides a traction device for a wire-paying trolley, which includes a winch and the traction device of the wire-paying trolley described in any embodiment of the first aspect, and the winch is fixedly connected to the moving mechanism of the traction device of the wire-paying trolley.

[0033] The beneficial effects of this application are as follows: The traction device of the wire-paying trolley provided in this application can drive the capstan to move on the busbar, and cooperate with the limiting mechanism to limit the capstan to a certain position on the busbar, so as to pull the wire-paying trolley at this position. After the traction is completed, the capstan is further moved by the moving mechanism. Therefore, the operation of carrying the capstan and removing the entire capstan from the busbar is omitted, effectively reducing the workload of the operator and improving the wire-paying efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to make the advantages of the present application more easily understood, the present application briefly described above will be described in more detail with reference to specific embodiments shown in the accompanying drawings. It will be understood that these drawings depict only typical embodiments of the present application and are therefore not to be considered as limiting the scope of protection thereof. The present application is described and explained with additional specificity and detail through the accompanying drawings.

[0035] FIG1 is a schematic structural diagram of a bus provided by the present application;

[0036] FIG2 is a schematic structural diagram of a traction device of a wire-paying trolley provided in the present application installed on a busbar;

[0037] FIG3 is a schematic structural diagram of a traction device of a wire-paying trolley provided in the present application;

[0038] FIG4 is a schematic cross-sectional view of a traction device of a wire-paying trolley provided in the present application;

[0039] FIG5 is a schematic cross-sectional view of a traction device of another pay-off trolley provided in the present application;

[0040] FIG6 is a schematic diagram of the dimensions L1 and L3 of a traction device of a wire-paying trolley provided in the present application;

[0041] FIG7 is a schematic diagram of the L2 dimension of a traction device of a wire-paying trolley provided in the present application;

[0042] FIG8 is a diagram of the traction device of a wire-laying trolley provided in this application. 1max Dimensional diagram.

[0043] The accompanying drawings are marked as follows: 100, moving mechanism; 110, frame; 111, mounting plate; 112, connecting member; 120, guide wheel; 130, guide shaft; 200, limiting mechanism; 300, limiting assembly; 310, limiting support member; 311, sawtooth; 320, limiting swing arm; 330, clamping member; 331, elastic clamping member; 332, rigid clamping member; 333, rotating shaft; 334, driving member; 335, eccentric arc disk; 336, arc-shaped side; 400, one-way limiting release assembly; 410, elastic clamping release assembly; 411, through hole; 412, pulling structure; 500, bus; 510, wing plate; 520, wheel groove; 530, side plate; 600, winch. Specific embodiments

[0044] In the following description, a large number of specific details are provided to provide a more thorough understanding of the present application. However, it will be apparent to those skilled in the art that the present application embodiments can be implemented without one or more of these details. In other examples, some technical features well known in the art are not described to avoid confusion with the present application embodiments.

[0045] To thoroughly understand the embodiments of the present application, a detailed structure will be provided in the following description. Obviously, the implementation of the embodiments of the present application is not limited to the specific details familiar to those skilled in the art. The preferred embodiments of the present application are described in detail below, but in addition to these detailed descriptions, the present application may also have other embodiments.

[0046] In the description of the present application, the term "A and / or B" represents all possible combinations of A and B, such as just A, just B, or A and B. The term "at least one A or B" or "at least one of A and B" has a similar meaning to "A and / or B", which may include just A, just B, or A and B. The singular terms "one" and "this" may also include the plural form. The orientations or positional relationships indicated by the terms "inside", "outside", "longitudinal", "lateral", "upper", "lower", "top", "bottom", etc. are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present application and do not require that the present application must be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present application. The terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance. In addition, in the description of this application, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0047] The embodiments of the present application are further described in detail below with reference to the accompanying drawings:

[0048] First, referring to Figures 1-8 , the present application provides a traction device for a wire-paying trolley, comprising a moving mechanism 100 and a limiting mechanism 200. The moving mechanism 100 is used to connect to a capstan 600, is movably connected to a busbar 500, and is movable along the length of the busbar 500. The limiting mechanism 200 acts on the busbar 500 and the moving mechanism 100, and is used to limit the moving mechanism 100 when it moves to a predetermined position on the busbar 500, thereby preventing the moving mechanism 100 from moving in a limiting direction close to the wire-paying trolley.

[0049] It should be understood that the limiting direction can be understood by referring to Figure 4. The X direction indicated in the figure is the limiting direction. The direction close to the wire-paying trolley is limited to the limiting direction in order to illustrate that the limiting mechanism 200 can prevent the moving mechanism 100 from moving toward the wire-paying trolley, thereby ensuring that when the winch 600 pulls the wire-paying trolley, it can be locked on the bus 500 by the limiting mechanism 200 and does not approach the wire-paying trolley, thereby ensuring effective and stable traction of the wire-paying trolley for wire-paying operations.

[0050] In the above implementation process, the mobile mechanism 100 is configured to drive the winch 600 to move along the bus 500, avoiding the operator's operation of carrying the winch 600, reducing the operator's labor intensity, and effectively improving the line-laying efficiency. After the mobile mechanism 100 drives the winch 600 to move to a certain distance from the line-laying trolley, the limiting mechanism 200 can be used to prevent the mobile mechanism 100 from moving in the limiting direction close to the line-laying trolley, so that the winch 600 can perform subsequent traction operations. When the winch 600 pulls the line-laying trolley to a nearby location and the position of the winch 600 needs to be readjusted, the limiting mechanism 200 can be released or disassembled, or the mobile mechanism 100 can be directly pushed in the direction opposite to the limiting direction to increase the distance between the winch 600 and the line-laying trolley for the next section of the line-laying operation.

[0051] As can be seen, the traction device of the wire-paying trolley provided in the present application can drive the capstan 600 to move on the bus 500, and cooperate with the limiting mechanism 200 to limit the capstan 600 to a certain position on the bus 500, and then tow the wire-paying trolley at this position. After the traction is completed, the capstan 600 is further moved by the moving mechanism 100. Therefore, the operation of carrying the capstan 600 and removing the entire capstan 600 from the bus 500 is omitted, which effectively reduces the workload of the operator and improves the wire-paying efficiency.

[0052] Optionally, the limiting mechanism 200 may be a detachable component such as a bolt or a positioning pin, which passes through a mounting hole on the moving mechanism 100 and presses against the bus 500 to lock the moving mechanism 100 and the winch 600 on the bus 500 .

[0053] In a possible embodiment, the limiting mechanism 200 is a one-way limiting mechanism 200, which is used to prevent the moving mechanism 100 from moving in the limiting direction relative to the bus 500 and allow the moving mechanism 100 to move in the direction opposite to the limiting direction relative to the bus 500.

[0054] In the above implementation process, after the one-way limiting mechanism 200 is used to limit the mobile mechanism 100, the mobile mechanism 100 cannot move in the limiting direction, and the winch 600 can achieve the pulling operation of the line-paying trolley, but it is allowed, that is, it does not affect the moving mechanism 100 to move away from the line-paying trolley. That is, after the winch 600 completes the pulling of the line-paying trolley for a certain distance, it can directly push the mobile mechanism 100 away from the line-paying trolley, increase the distance between the mobile mechanism 100 and the line-paying trolley, and carry out the next section of pulling without releasing or disassembling the limiting mechanism 200. It can be seen that by using the one-way limiting mechanism 200 to limit the mobile mechanism 100, the operation of the limiting mechanism 200 during the line-paying process can be directly omitted. Only by pushing the mobile mechanism 100, the winch 600 can achieve the pulling of the line-paying trolley for multiple distances, which greatly simplifies the line-paying operation and improves the line-paying efficiency.

[0055] In a possible embodiment, the traction device of the above-mentioned wire-releasing trolley also includes a one-way limit release assembly 400, which is connected to the fixed part of the mobile mechanism 100 and is used to act on the one-way limit mechanism 200 so that the one-way limit mechanism 200 allows the mobile mechanism 100 to move in the limit direction relative to the bus 500.

[0056] During the above implementation process, during the actual line-paying operation, the capstan 600 may sometimes be too far away from the line-paying trolley, and the capstan 600 needs to be moved in a direction closer to the line-paying trolley, i.e., in the limit direction. Therefore, the traction device of the line-paying trolley provided in this application is also provided with a one-way limit release assembly 400. The one-way limit release assembly 400 can release the restriction of the single-line limit mechanism 200 on the movement of the mobile mechanism 100 in the limit direction, allowing the mobile mechanism 100 to move toward the line-paying trolley, thereby expanding the applicable scenarios of the traction device of the line-paying trolley and avoiding the need to disassemble, transport, and install the mobile mechanism 100 and the capstan 600 from the bus 500 in the above situation.

[0057] In one possible embodiment, the one-way limiting mechanism 200 includes a limiting assembly 300, which includes a limiting support 310, a limiting swing arm 320, and a pressing member 330. The limiting support 310 is configured to be inserted into a wheel groove 520 on the lower side of the wing 510 of the bus 500 when the moving mechanism 100 is movably connected to the bus 500. The first end of the limiting swing arm 320 is rotatably connected to the fixed portion of the moving mechanism 100, and the second end is rotatably connected to the limiting support 310. The second end of the limiting swing arm 320 is configured to be driven by the limiting support 310 to deflect away from the vertical direction toward the limiting direction under the squeezing action of the bus 500 on the limiting support 310. When the limiting swing arm 320 is perpendicular to the wing 510 of the bus 500, the direction in which the length of the limiting swing arm 320 extends is the vertical direction. The pressing member 330 is connected to the fixed part of the moving mechanism 100 , and is used to act on the limiting swing arm 320 and apply a force opposite to the limiting direction to the limiting swing arm 320 , so that the limiting support member 310 presses against the bus 500 .

[0058] It should be understood that the fixed portion of the mobile mechanism 100 described above refers to the structural portion that is connected to the capstan 600 and remains stationary relative to the capstan 600 when the mobile mechanism 100 moves along the busbar 500. For example, the mobile mechanism 100 includes a frame 110 and two sets of guide wheels 120. The guide wheels 120 are rotatably connected to the frame 110. The two sets of guide wheels 120 are respectively mounted on the wing panels 510 on both sides below the busbar 500 and roll along the wing panels 510. In this case, the fixed portion of the mobile mechanism 100 refers to the frame 110 of the mobile mechanism 100.

[0059] It should be understood that the Y direction indicated in FIG4 and FIG8 is the vertical direction. As shown in FIG6, when the limiting swing arm 320 is perpendicular to the wing plate 510 of the bus 500, that is, when the limiting swing arm 320 is in the vertical direction, the distance L1 from the axis of the rotational connection between the limiting swing arm 320 and the fixed part of the moving mechanism 100 to the upper surface of the limiting support 310 (or the bottom of the groove 520 of the bus 500, or the upper surface of the wing plate 510 of the bus 500) is the largest (that is, L shown in FIG8). 1max ), the limiting swing arm 320 deflects from the vertical direction to the limiting direction, and the larger the deflection angle, the smaller L1.

[0060] In the above implementation process, when installing the traction device of the wire-laying trolley to the bus 500, first align the limiting support 310 with the wheel groove 520 on the lower side of the wing plate 510 of the bus 500, and push the traction device upward to embed the limiting support 310 into the wheel groove 520. The limiting support 310 contacts the bottom or wall of the wheel groove 520. At this time, the limiting support 310 is perpendicular to the bus 500 or deviates from the vertical direction and offsets in the limiting direction. Then push the traction device upward so that the moving part of the moving mechanism 100 can exceed the contact surface with the busbar, and movably connect the moving part of the moving mechanism 100 to the busbar 500. At this time, the busbar 500 generates a downward squeezing force on the limiting support 310, thereby pushing the limiting swing arm 320 away from the vertical direction and deflecting it in the limiting direction (that is, the initial state of the limiting swing arm 320 when not squeezed by the busbar 500 may be in the vertical direction, or it may be deflected from the vertical direction to the limiting direction by a certain angle and deflected to a larger angle after squeezing). After releasing your hand, the installation is completed.

[0061] L1 after installation is smaller than L1 in the initial state, so the pressing member 330 applies a force opposite to the limiting direction to the limiting swing arm 320 , thereby pressing the limiting support member 310 tightly into the wheel groove 520 of the busbar 500 .

[0062] When the outside world applies an external force in the limiting direction to the traction device, the bus 500 will generate a friction force opposite to the limiting direction on the upper surface of the limiting support 310. The friction force drives the limiting support 310 and the limiting swing arm 320 to move or swing in the direction opposite to the limiting direction, or has a driving movement trend. Therefore, under the action of the external force, the limiting support 310 gradually presses against and locks the bus 500, making it impossible for the moving mechanism 100 to move in the limiting direction, thereby preventing the moving mechanism 100 from moving in the limiting direction.

[0063] When the outside world applies an external force opposite to the limiting direction to the traction device, the bus 500 will generate a friction force on the upper surface of the limiting support 310 in the same direction as the limiting direction. The friction force has a tendency to drive the limiting support 310 to move in the limiting direction and drive the limiting support arm to continue to deflect in the limiting direction until the friction force between the bus 500 and the limiting support 310 is less than the external force. The limiting support 310 slides relative to the bus 500 in the direction opposite to the limiting direction, that is, the moving mechanism 100 moves relative to the bus 500 in the direction opposite to the limiting direction.

[0064] In summary, the one-way limiting mechanism 200 provided in the present application can achieve one-way limiting of the mobile mechanism 100, preventing the mobile mechanism 100 from moving in the limiting direction so that the winch 600 can pull the line-releasing trolley, and allow the mobile mechanism 100 to move in the direction opposite to the limiting direction at any time so as to adjust the distance between the winch 600 and the line-releasing trolley.

[0065] In a possible implementation, the pressing member 330 includes an elastic pressing member 331 , and when the limiting swing arm 320 deflects toward the limiting direction, the elastic pressing member is deformed under the action of the limiting swing arm 320 .

[0066] Optionally, the elastic pressing member 331 may be an elastic structure such as a spring or a torsion spring.

[0067] Specifically, when the elastic pressing member 331 is a spring, the spring can be arranged on the side of the limiting swing arm 320 close to or away from the limiting direction.

[0068] In the specific embodiment where the spring is positioned on the side of the position-limiting swing arm 320 that is away from the limiting direction, the ends of the spring are respectively connected to the position-limiting swing arm 320 and the fixed portion of the moving mechanism 100. When the traction device is installed and the busbar 500 compresses the position-limiting swing arm 320, causing it to deflect in the limiting direction, the position-limiting swing arm 320 stretches the spring. That is, when the position-limiting swing arm 320 is in its initial state, the spring is at either its natural length or its stretched length, preferably its natural length.

[0069] In a possible embodiment, as shown in Figure 4, the traction device of the above-mentioned wire-releasing trolley also includes an elastic pressing release component 410, which is connected to the fixed part of the mobile mechanism 100, and is used to resist the elastic pressing member 331 from pushing the limiting support member 310 and / or the limiting swing arm 320 in the limiting direction, and to create a gap between the upper surface of the limiting support member 310 and the bus 500, so that the one-way limiting mechanism 200 allows the mobile mechanism 100 to move in the limiting direction relative to the bus 500.

[0070] In the above implementation process, based on the elastic deformation characteristics of the elastic pressing member 331, the present application provides an elastic pressing release component 410, and uses the elastic pressing release component 410 to push the limiting support member 310 and / or the limiting swing arm 320 in the limiting direction, so that the one-way limiting mechanism 200 allows the moving mechanism 100 to move in the limiting direction relative to the bus 500.

[0071] Specifically, a through hole 411 is opened at one end of the limiting support member 310 close to the limiting direction, and a rigid member or flexible structure (such as iron wire, rubber-coated steel wire) is passed through the through hole 411 for convenient connection or manual pulling. The operator can manually pull the limiting support member 310 to move in the limiting direction.

[0072] In one possible embodiment, as shown in Figures 4 and 5, the position-limiting support member 310 includes a rigid abutting member 332, which includes a rotating shaft 333, a driving member 334, and an eccentric arc-shaped disk 335. The rotating shaft 333 is rotatably connected to the fixed portion of the moving mechanism 100. The driving member 334 acts on the rotating shaft 333 to drive the rotating shaft 333 to rotate. The eccentric arc-shaped disk 335 is fixedly connected to the rotating shaft 333 and is located on the side of the position-limiting swing arm 320 close to the position-limiting direction. The eccentric arc-shaped disk 335 has an arc-shaped side surface 336, the axis of which is parallel to the axis of the rotating shaft 333. The eccentric arc-shaped disk 335 is configured to rotate under the drive of the rotating shaft 333, and during the rotation process, the arc-shaped side surface 336 contacts the position-limiting swing arm 320 until it abuts against the position-limiting swing arm 320.

[0073] It should be understood that the axis of the arc-shaped side surface 336 is parallel to the axis of the rotation axis 333 , which means that the two axes are parallel but not collinear, that is, the arc-shaped side surface 336 is eccentrically arranged with respect to the rotation axis 333 .

[0074] During the above-described implementation, the driver 334 rotates the rotating shaft 333, which in turn drives the eccentric arc disc 335 to rotate, releasing the curved side 336 of the eccentric arc disc 335 from the limiting swing arm 320. Continued rotation of the eccentric arc disc 335 gradually presses against the limiting swing arm 320, causing the limiting support member 310 to press against the busbar 500, creating a pressure effect between the two. When the traction device needs to be moved, the driver 334 rotates the rotating shaft 333, driving the eccentric arc disc 335 away from the limiting swing arm 320 and releasing the limiting swing arm 320. At this point, the moving mechanism 100 can move in both the limiting direction and the direction opposite to the limiting direction. In other words, the rigid pressing member 332 itself can achieve one-way limit release.

[0075] Preferably, the one-way limiting mechanism 200 includes an elastic pressing member 331 and a rigid pressing member 332. In this case, the rigid pressing member 332 can be used as a structure to assist in increasing the pressing force in the limiting direction, and assist the elastic pressing member 331 in achieving one-way limiting.

[0076] Optionally, the arc-shaped side surface 336 may be a segment of an arc, or a complete circle, an ellipse, etc.

[0077] In a possible implementation, the driving member 334 is a handheld rotating arm mounted on the rotating shaft 333 .

[0078] In a possible implementation, the driving member 334 is a motor installed on the rotating arm.

[0079] In a possible embodiment, the upper surface of the position-limiting support 310 for contacting the busbar 500 is provided with serrations 311 , and the serrations 311 are inclined in the position-limiting direction.

[0080] In the above implementation process, the serrations 311 are provided on the upper surface of the position-limiting support 310 , which can increase the friction between the position-limiting support 310 and the busbar 500 , thereby increasing the locking effect of the one-way limit.

[0081] In a possible implementation, the serrations 311 cover part or all of the upper surface of the limiting swing arm 320 .

[0082] In one possible embodiment, the limiting assembly 300 includes a limiting support member 310, at least two limiting swing arms 320 and at least two pressing members 330, at least two limiting swing arms 320 are arranged along the limiting direction, and each pressing member 330 acts on at least one limiting swing arm 320.

[0083] In the above implementation process, the limiting support member 310 is long and narrow, and one limiting support member 310 is provided with two or more limiting swing arms 320 and abutting members 330, which can improve the stability of the one-way limiting while ensuring a certain degree of structural simplification.

[0084] Optionally, the number of the position-limiting swing arms 320 and the number of the pressing members 330 may be the same or different. The position-limiting swing arms 320 may be provided with corresponding pressing members 330 or may not be provided with pressing members 330.

[0085] In a possible implementation, the one-way limiting mechanism 200 includes two sets of limiting components 300 , and the limiting support members 310 of the two sets of limiting components 300 correspond to the wheel grooves 520 on the lower sides of the two wing plates 510 embedded in the busbar 500 .

[0086] In the above implementation process, the busbar 500 has a symmetrical structure, so providing two sets of limiting mechanisms 200 can improve the stability of the one-way limiting and the stability of the movement of the traction device.

[0087] In a possible embodiment, as shown in FIG6, FIG7 and FIG8, the maximum distance between the axis of the rotational connection between the limiting swing arm 320 and the moving mechanism 100 and the upper surface of the limiting support 310 for contacting the bus 500 is L 1maxThe distance between the axis of the limited swing arm 320 and the mobile mechanism 100 for rotation connection and the contact surface of the mobile mechanism 100 for contacting the bus 500 is L2, the thickness of the wing plate 510 of the bus 500 at the wheel groove 520 is L3, L 1max +L3>L2.

[0088] It should be understood that the above-mentioned L3 refers to the thickness of the wing plate 510 of the bus 500 at the wheel groove 520 when the upper surface of the limiting support member 310 can contact the bottom of the wheel groove 520; if the bottom of the wheel groove 520 is relatively narrow, the upper surface of the limiting support member 310 cannot contact the bottom of the wheel groove 520, then L3 refers to the distance between the upper surface of the limiting support member 310 and the upper surface of the wing plate 510 when the limiting support member 310 is embedded deepest in the wheel groove 520.

[0089] In the above implementation process, when L 1max When +L3>L2, when the moving mechanism 100 is connected to the bus 500, the bus 500 can exert a force on the limiting support 310, which can squeeze the limiting swing arm 320 away from the vertical direction and deflect toward the limiting direction, thereby realizing one-way limiting.

[0090] In one possible embodiment, the mobile mechanism 100 includes a frame 110 and two sets of guide wheels 120, which are rotatably connected to the frame 110. The two sets of guide wheels 120 are used to be respectively hung on the wing plates 510 on both sides below the bus 500 and roll along the wing plates 510.

[0091] In the above implementation process, the guide wheel 120 is arranged to roll on the wing plate 510 of the busbar 500, which has a simple structure, is easy to move, and has low friction.

[0092] In a possible implementation, the guide wheel 120 is movably connected to the frame 110 , and the guide wheel 120 can move relative to the frame 110 along the direction of the axis of the guide wheel 120 .

[0093] In the above implementation process, during the installation of the traction device, when the limiting support member 310 is embedded in the wheel groove 520 but does not squeeze the bus 500, the lowest point of the guide wheel 120 is located below the upper surface of the wing plate 510. When the limiting support member 310 is lifted upward and the bus 500 is squeezed, the guide wheels 120 are all lifted to above the upper surface of the wing plate 510. At this time, the two groups of guide wheels 120 are moved toward the side plate 530 of the bus 500, and then the moving mechanism 100 is released. The guide wheels 120 naturally fall to the upper surface of the wing plate 510 and squeeze the wing plate 510 from both sides of the wing plate 510 together with the limiting support member 310, exerting pressure on the wing plate 510.

[0094] In a possible implementation, the moving assembly further includes a guide shaft 130 , which is connected to the guide wheel 120 and is threadedly connected to the frame 110 .

[0095] In the above implementation process, the guide shaft 130 is threadedly connected to the frame 110, and the axial movement of the guide wheel 120 can be achieved by rotating the guide shaft 130, which has a simple structure and is easy to operate.

[0096] In a possible implementation, the minimum axial distance between the two sets of guide wheels 120 is greater than or equal to the maximum distance on the busbar 500 in a direction perpendicular to the side plate 530 .

[0097] During the above implementation process, there are protruding locking nuts at the connection between the two sections of the bus 500. In order to ensure that the moving mechanism 100 can move smoothly and unimpeded on the bus 500, the minimum axial distance between the two sets of guide wheels 120 is set to be greater than or equal to the maximum distance on the bus 500 perpendicular to the side plate 530.

[0098] In a possible implementation, the moving assembly further includes a guide drive member 334 , which is connected to the guide wheel 120 and is used to drive the guide wheel 120 to rotate.

[0099] In the above implementation process, the guide driving member 334 is used to drive the guide wheel 120 to rotate, thereby driving the traction device to move along the bus 500. No human drive is required, which can reduce the workload of the operator.

[0100] Specifically, the guide drive member 334 may be an electric motor or a hydraulic motor.

[0101] In a possible implementation, as shown in FIG3 , the frame 110 includes two mounting plates 111 arranged in parallel and a connector 112 connecting the two mounting plates 111 , and the two sets of guide wheels 120 are respectively mounted on the two mounting plates 111 .

[0102] Optionally, two sets of limiting components 300 are also mounted on two mounting plates 111 respectively.

[0103] In the second aspect, the present application also provides a traction device for a wire-paying trolley, which includes a winch 600 and the traction device of the wire-paying trolley in any embodiment of the first aspect, and the winch 600 is fixedly connected to the moving mechanism 100 of the traction device of the wire-paying trolley.

[0104] The above shows and describes the basic principles and main features of the present application and the advantages of the present application. It is obvious to those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, and that the present application can be implemented in other specific forms without departing from the spirit or basic features of the present application. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present application is defined by the appended claims rather than the above description, and it is intended that all changes that fall within the meaning and range of equivalents of the claims are included in the present application. Any figure mark in the claims should not be construed as limiting the claim to which it relates.

[0105] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A traction device for a wire-releasing trolley, characterized in that: include: A moving mechanism, used for connecting the capstan, being movably connected to the bus bar and being movable along the length direction of the bus bar; The limiting mechanism acts on the bus and the moving mechanism, and is used to limit the moving mechanism when the moving mechanism moves to a predetermined position on the bus, so as to prevent the moving mechanism from moving in a limiting direction close to the wire-releasing trolley.

2. The traction device of the wire-laying trolley according to claim 1 is characterized in that: The limiting mechanism is a one-way limiting mechanism, which is used to prevent the moving mechanism from moving in the limiting direction relative to the bus and allow the moving mechanism to move in a direction opposite to the limiting direction relative to the bus.

3. The traction device of the wire-laying trolley according to claim 2, characterized in that: It also includes a one-way limit release component, which is connected to the fixed part of the moving mechanism and is used to act on the one-way limit mechanism so that the one-way limit mechanism allows the moving mechanism to move in the limit direction relative to the bus.

4. The traction device of the wire-laying trolley according to claim 2, characterized in that: The one-way limiting mechanism includes a limiting component, and the limiting component includes: A position-limiting support member, used for being embedded in the wheel groove on the lower side of the wing plate of the busbar when the moving mechanism is movably connected to the busbar; A limit swing arm, wherein the first end of the limit swing arm is rotatably connected to the fixed part of the moving mechanism, and the second end is rotatably connected to the limit support member, and the second end of the limit swing arm is used to be driven by the limit support member to deflect away from the vertical direction to the limit direction under the squeezing effect of the busbar on the limit support member; when the limit swing arm is perpendicular to the wing plate of the busbar, the direction in which the length of the limit swing arm extends is the vertical direction; The pressing member is connected to the fixed part of the moving mechanism and is used to act on the limiting swing arm and apply a force opposite to the limiting direction to the limiting swing arm, so that the limiting support member presses against the bus.

5. The traction device of the wire-paying trolley according to claim 4, characterized in that: The pressing member comprises an elastic pressing member, and when the limiting swing arm deflects toward the limiting direction, the elastic pressing member is deformed under the action of the limiting swing arm.

6. The traction device of the wire-paying trolley according to claim 5, characterized in that: It also includes an elastic pressing release component, which is connected to the fixed part of the moving mechanism and is used to resist the elastic pressing member from pushing the limiting support member and / or the limiting swing arm in the limiting direction, so that the one-way limiting mechanism allows the moving mechanism to move in the limiting direction relative to the bus.

7. The traction device of the wire-paying trolley according to claim 4, characterized in that: The position-limiting support member includes a rigid abutting member, and the rigid abutting member includes: A rotating shaft rotatably connected to the fixed part of the moving mechanism; A driving member, acting on the rotating shaft, for driving the rotating shaft to rotate; An eccentric arc disk is fixedly connected to the rotating shaft and is located on the side of the limit swing arm close to the limit direction. The eccentric arc disk has an arc-shaped side surface, and the axis of the arc-shaped side surface is parallel to the axis of the rotating shaft. The eccentric arc disk is used to rotate under the drive of the rotating shaft, and during the rotation, the arc-shaped side surface contacts the limit swing arm until it is tightly pressed against the limit swing arm.

8. The traction device of the wire-paying trolley according to claim 7, characterized in that: The driving member is a handheld rotating arm mounted on the rotating shaft, and / or, The driving member is a motor installed on the rotating arm.

9. The traction device of the wire-paying trolley according to claim 4, characterized in that: The upper surface of the position-limiting support member for contacting with the busbar is provided with saw teeth, and the saw teeth are inclined toward the position-limiting direction.

10. The traction device of the wire-paying trolley according to claim 9, characterized in that: The saw teeth cover part or all of the upper surface of the position-limiting swing arm.

11. The traction device of the wire-paying trolley according to claim 4, characterized in that: The limiting assembly includes a limiting support member, at least two limiting swing arms and at least two pressing members, at least two limiting swing arms are arranged along the limiting direction, and each pressing member acts on at least one limiting swing arm.

12. The traction device of the wire-paying trolley according to claim 4, characterized in that: The one-way limiting mechanism comprises two groups of limiting components, and the limiting support members of the two groups of limiting components correspond to the wheel grooves on the lower sides of the two wing plates embedded in the busbar respectively.

13. The traction device of the wire-paying trolley according to claim 4, characterized in that: The maximum distance between the axis of the rotational connection between the limit swing arm and the moving mechanism and the upper surface of the limit support for contacting the busbar is L. 1max The distance between the axis of the limit swing arm and the mobile mechanism for rotation connection and the contact surface of the mobile mechanism for contacting the bus is L2, the thickness of the wing plate of the bus at the wheel groove is L3, L 1max +L3>L2.

14. The traction device of the wire-paying trolley according to any one of claims 1 to 13, characterized in that: The moving mechanism comprises a frame and two sets of guide wheels, wherein the guide wheels are rotatably connected to the frame, and the two sets of guide wheels are used to be respectively hung on the wing plates at both sides below the bus bar and roll along the wing plates.

15. The traction device of the wire-paying trolley according to claim 14, characterized in that: The guide wheel is movably connected to the frame, and the guide wheel can move relative to the frame along the direction of the guide wheel axis.

16. The traction device of the wire-paying trolley according to claim 15, characterized in that: The moving assembly also includes a guide shaft, which is connected to the guide wheel and is threadedly connected to the frame.

17. The traction device of the wire-paying trolley according to claim 14, characterized in that: The minimum axial distance between the two groups of guide wheels is greater than or equal to the maximum distance on the busbar perpendicular to the side plate direction.

18. The traction device of the wire-paying trolley according to claim 14, characterized in that: The moving assembly also includes a guide driving member, which is connected to the guide wheel and is used to drive the guide wheel to rotate.

19. The traction device of the wire-paying trolley according to claim 14, characterized in that: The frame comprises two mounting plates arranged in parallel and a connecting piece connecting the two mounting plates, and the two groups of guide wheels are respectively mounted on the two mounting plates.

20. A traction device for a wire-laying trolley, characterized in that: It comprises a capstan and the traction device of the wire-paying trolley as described in any one of claims 1 to 19, wherein the capstan is fixedly connected to the moving mechanism of the traction device of the wire-paying trolley.

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