CN106081735A - A kind of wire drag and drop coaster - Google Patents

Abstract

The invention discloses a wire dragging and dropping tackle, which relates to the technical field of special equipment for transmission line construction, and is used for reducing the tension of wire unwinding and improving the construction safety of wire unwinding. The wire dragging and dropping trolley includes: a fixing device, and the fixing device includes: a fixing frame used to be installed on the frame body of the spanning frame, and a bracket fixedly connected with the fixing frame; the bracket carries a sliding A wheel shaft, a plurality of rotatable pulleys are sheathed on the pulley shaft, and the surfaces of the pulleys are provided with chutes for accommodating wires. The wire drag-and-drop tackle provided by the invention is used for wire laying and laying in power transmission line stringing construction.

Description

A wire drag and drop tackle

technical field

The invention relates to the technical field of special equipment for transmission line construction, in particular to a wire dragging and dropping tackle.

Background technique

The wiring construction of transmission lines in the prior art includes foundation construction, tower assembly and wire hanging, etc. When crossing obstacles such as expressways and high-speed railways, it is generally necessary to build spanning frames, and then carry out wire spreading and wire hanging.

At present, in the process of laying out the wires in the construction of transmission lines, when the wires pass through the cross-arm of the spanning frame, in order to ensure that the wires are not worn and the stability of the spanning frame body is ensured, the wires cannot be frictionally contacted with the cross-arm of the spanning frame. That is to say, it is required to keep a certain distance between the conductor and the cross arm of the spanning frame, therefore, a large conductor tension is required.

However, if the tension of the wire is too high, it is easy to cause the wire to break, and the impact force of the wire break will affect the safety of the wire construction of the transmission line.

Contents of the invention

The object of the present invention is to provide a wire dragging and dropping block, which is used to reduce the tension of wire unwinding and improve the construction safety of wire unwinding.

In order to achieve the above object, the present invention provides the following technical solutions:

A wire dragging and dropping tackle, comprising: a fixing device; the fixing device includes: a fixing frame used to be installed on the frame body of the spanning frame, and a bracket fixedly connected with the fixing frame; a pulley shaft is carried on the bracket, and the pulley shaft A plurality of rotatable pulleys are sheathed, and the surface of the pulleys is provided with a chute for accommodating wires.

The wire dragging and dropping block provided by the present invention can be installed on various steel structure spanning frame bodies through the fixing frame, and the pulley with the chute can make the deployed wire fall in the chute, so that the chute not only It can avoid direct contact between the wire and the cross arm of the spanning frame, so as to effectively prevent the wire from being stuck or worn; moreover, the chute can also play a certain supporting role on the wire, and because the direction of the chute’s supporting force on the wire is different from that of the wire The gravity acts in the opposite direction, so that the support force of the chute to the conductor can offset part of the gravity of the conductor, which is equivalent to reducing the gravity of the conductor, while the gravity of the conductor is reduced, and the pay-off of the conductor due to the gravity of the conductor Tension also decreases accordingly. Therefore, the wire dragging and dropping tackle provided by the present invention can reduce the tension of the wires, thereby reducing the probability of wire breakage and improving the safety of the wire construction of the transmission line.

Description of drawings

The accompanying drawings described here are used to provide a further understanding of the present invention, and constitute a part of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention, and do not constitute improper limitations to the present invention. In the attached picture:

Fig. 1 is a schematic front view of the structure of the wire drag and drop tackle provided by the embodiment of the present invention;

Fig. 2 is the schematic side view of the structure of the wire drag and drop tackle provided by the embodiment of the present invention;

Fig. 3 is a schematic structural diagram of a fixing frame provided by an embodiment of the present invention.

Reference signs:

1-Fixer, 2-Bracket,

3- pulley shaft, 4- pulley,

10-fixed mounting holes, 11-bottom plate,

12 - Side panels.

detailed description

For ease of understanding, the wire dragging and dropping tackle provided by the embodiment of the present invention will be described in detail below in conjunction with the accompanying drawings.

Referring to Fig. 1 and Fig. 2, the wire dragging and dropping tackle provided by the embodiment of the present invention includes a fixing device, and the fixing device includes: a fixing frame 1 for being installed on the frame body of the spanning frame, and a bracket fixedly connected with the fixing frame 1 Frame 2; the pulley shaft 3 is carried on the bracket 2, and a plurality of rotatable pulleys 4 are sleeved on the pulley shaft 3, and the surface of the pulley 4 is provided with a chute for accommodating wires.

During specific implementation, the wire dragging and dropping block provided by the embodiment of the present invention can be installed on various steel structures spanning the frame body through the fixed frame 1, and the pulley 4 with the chute can make the wires laid out fall on the In the chute, along with the unfolding of the wires, the pulley 4 accommodating the wires will rotate around the pulley shaft 3 .

When the above-mentioned wire dragging and dropping tackle is used to spread the wires, by dropping the wires into the chute, the chute can not only avoid direct contact between the wires and the cross-arm of the spanning frame, so as to effectively prevent the wires from being stuck or worn out; The groove can also support the wire to a certain extent, and because the direction of the chute’s supporting force on the wire is opposite to the direction of the gravity of the wire, the supporting force of the chute on the wire can offset part of the gravity of the wire, which is quite Because the gravity of the wire is reduced, and the gravity of the wire is reduced, the pay-off tension of the wire due to the gravity of the wire is also reduced. Therefore, the wire dragging and dropping tackle provided by the embodiment of the present invention can reduce the wire tension of the wire, thereby reducing the probability of wire breakage and improving the safety of the wire construction of the transmission line.

In addition, along with the traction and stretching of the wire, the wire can also pass the pay-off tension of the wire to the pulley 4 through the chute, so that the pulley 4 rotates around the pulley shaft 3, that is, the wire and wire caused by the pay-off tension of the wire and The friction between the pulleys 4 is converted into the power of the pulley 4 rotation, and the pulley 4 rotates around the pulley shaft 3, which can buffer the force of the pulley 4 on the pulley shaft 3, which also reduces the tension of the wire on the other hand. The role of the bracket 2 and the fixed frame 1 in the wire dragging and dropping tackle can reduce the influence of the wire pay-off tension on the spanning frame body.

And the pulley 4 rotates with the unfolding of the wire, and the friction between the wire and the pulley 4 is used as the power for the rotation of the pulley 4, which weakens the effect of the friction between the wire and the pulley 4 on the wire, and can effectively avoid the friction caused by the wire. The frictional force causes the wires to wear; and the wires fall into the chute, and the two sides of the chute can also guide and separate the wires, effectively preventing twisting and winding when multiple wires are deployed at the same time. Condition.

Optionally, the chute on the surface of the pulley 4 for holding the wire is an annular chute, and the surface of the chute should be smooth without sharp burrs; Some damage or wear to the wires.

And in order to further slow down the influence of the wire tension on the spanning frame body, an elastic sleeve can be provided in the chute; the elastic sleeve can buffer the wire tension in the process of wire deployment to a certain extent through its own elasticity, and weaken the impact of the wire tension on the frame body. The function of the pulley 4 is to reduce the force of the wire dragging and dropping the pulley on the spanning frame body, thereby avoiding the impact on the safety of the wiring construction of the transmission line and improving the safety of the wiring construction of the transmission line. In this embodiment, the elastic sleeve is a rubber sleeve.

It should be noted that the materials of the fixed frame 1 and the bracket 2 in the above-mentioned embodiments can be selected from various materials, such as cast iron, cast steel, forged steel, etc., and in order to ensure that the fixed frame 1 and the bracket 2 have good mechanical properties , preferably forged steel.

Specifically, the structure of the fixing frame 1 in the above embodiment can be specifically designed in conjunction with various structures spanning the frame body. . In the wire drag and drop tackle provided in the embodiment of the present invention, a simple and stable fixed frame structure is preferred in conjunction with the most common spanning frame structure. Referring to Fig. 3 for details, the fixed frame 1 includes a bottom plate 11, and The two side plates 12 on the surface; the bracket 2 is fixedly connected to the lower surface of the bottom plate 11; the two side plates 12 are arranged oppositely, and each side plate 12 is provided with at least two fixed mounting brackets for fixing with the spanning frame body. hole 10.

In the embodiment of the present invention, the fixing frame 1 is surrounded by a bottom plate 11 and two opposite side plates 12 to form a cuboid box-like structure, and the two side plates 12 can be located at any pair of opposite sides of the bottom plate 11 .

When used in conjunction with the spanning frame body, the fixed frame 1 is buckled on the spanning frame body, that is, the bottom plate 11 of the fixing frame 1 is in contact with the top surface of the spanning frame body, and the two side plates 12 are located on the spanning frame body. Both sides, through the fixed mounting holes 10 on the two side plates 12, the wire drag and drop tackle can be fixed on the frame body of the spanning frame.

Through the process of using the above-mentioned fixed frame with the straddling frame body, it can be seen that although the structure of the fixed frame 1 is simple, the base plate 11 passed by the fixed frame 1 is in contact with the large area of the straddling frame body, and the two side plates 12 from the The fixing on the side of the spanning frame body can make the wire dragging and dropping tackle stably installed on the spanning frame body, and will not be affected by the tension of the wires when the wires are deployed.

And in order to facilitate the use of the wire drag and drop tackle, the fixing method between the two side plates 12 of the fixed mount 1 and the spanning frame body is preferably fixed with bolts, so that the fixed mounting hole 10 on the side plate 12 should be fixed threaded holes; or, each side plate 12 can be provided with a detachable connecting sleeve corresponding to the fixed mounting hole 10, and each connecting sleeve is provided with a fixed threaded hole, specifically, the fixed mounting hole 10 can be It is a light hole, and the connecting sleeve can be a cylindrical sleeve. The outer surface of the connecting sleeve is in interference fit with the surface of the inner hole of the fixed installation hole 10. A fixed threaded hole is provided in the center of the connecting sleeve for the fixing frame 1 and the spanning The bolts of the frame body are fixed, and the service life of the wire dragging and dropping tackle can be extended by disassembling and replacing the connecting sleeve.

In order to ensure that the fixing frame 1 has sufficient strength, the bottom plate 11 and the two side plates 12 can be of an integrated structure, that is, the fixing frame 1 is made by integral stamping or integral casting, so that the fixing frame 1 has the above-mentioned structural features. And when the bottom plate 11 and the two side plates 12 are of split structure, the two side plates 12 are respectively welded to the two edges of the bottom plate 11 by means of welding.

In addition, gaskets can also be provided on the opposite sides of the two side plates 12, so that when the fixed frame 1 is installed on the spanning frame body, the gap between the fixed frame 1 and the spanning frame body can be filled by the cushioning of the gasket. , to ensure the fastening strength of the fixed frame 1 and the spanning frame body, and also avoid the direct contact between the fixed frame 1 and the spanning frame body, and prevent the surface of the fixed frame 1 from spanning the frame body under the action of wire tension. The damage caused will affect the construction quality of the spanning frame.

It should be noted that the gasket can be made of various materials, such as pad paper, rubber, silicon rubber, cork, etc. In this embodiment, the gasket is preferably made of rubber; The board is glued, and when the gasket is worn, it can also be replaced and maintained.

In addition, the fixed frame 1 and the bracket 2 in the above-mentioned embodiments can also be an integral structure or a split structure; and in order to ensure the structural strength of the wire dragging and dropping tackle itself, the fixed frame 1 can be integrally formed with the bracket 2, such as an integrated Stamping molding, integrated casting molding, etc.; if the fixed frame 1 and the bracket 2 are of a split structure, the fixed frame 1 and the bracket 2 should be fixedly connected by welding.

In order to slow down the influence of the wire tension on the spanning frame during the deployment of the wires, the fixing frame 1 can also be fixedly connected to the bracket 2 through elastic connectors. The elastic connector has a buffering effect on the bearing capacity of the bracket 2, and can weaken the force brought to the fixed frame 1 due to the tension of the wire when the wire is unfolded, so as to reduce the force of the dragging and dropping block of the wire on the spanning frame body The purpose of this is to avoid the impact on the safety of the wiring construction of the transmission line and improve the safety of the wiring construction of the transmission line.

As for the structure of the elastic connector, there can be many kinds. In the present embodiment, the elastic connector specifically adopts a spring; Strength requirements are specified.

In order to improve the load-bearing strength of the bracket 2 , a plurality of auxiliary supporting parts can be distributed on the bracket 2 to disperse the force brought by the pulley shaft 3 to the bracket 2 .

Specifically, referring to Fig. 1 and Fig. 2, the two ends of the pulley shaft 3 are fixedly supported by the main support structure located at the two edges of the bracket 2, and in the area corresponding to the pulley shaft 3 in the middle of the bracket 2, there are more equidistant intervals. Auxiliary support ribs are respectively movably connected or fixedly connected to the surface of the corresponding pulley shaft 3 that is not sleeved with pulley 4, so as to realize the distributed load bearing of bracket 2 to pulley shaft 3. In addition, in order to reduce the weight of the wire dragging and dropping tackle and facilitate installation, multiple weight-reducing holes can also be provided on the bracket 2 .

Optionally, the axial direction of the pulley shaft 3 and the plane of the side plate 12 of the fixed frame 1 can be in the same direction or be perpendicular to each other, which should be determined by the installation position of the wire dragging and dropping block on the spanning frame body. For example: when the wire drag and drop block is installed on the cross arm of the spanning frame, and is used to make the wire cross the cross arm of the spanning frame along the direction perpendicular to the cross arm of the spanning frame, the axial direction of the pulley shaft 3 and the side plate of the fixed frame 1 12 planes are in the same direction.

It should be noted that the pulley 4 in the above embodiment can be a nylon wheel, and a bearing that cooperates with the pulley shaft 3 is provided in the inner hole of the pulley 4 to realize the rotatable connection of the pulley 4. Specifically, the bearing can be a rolling bearing , Rolling bearings have high load carrying capacity and are easy to use and maintain. And in order to prolong the service life of pulley 4, wear-resistant sleeve can also be set between the wheel inner hole of pulley 4 and the bearing.

In addition, the number of pulleys 4 should be specifically determined by those skilled in the art according to the actual needs of the wire construction of the transmission line. In this embodiment, 8 pulleys are selected: 8 pulleys are arranged without intervals along the axial direction of the pulley shaft 3, Make the structure of the wire dragging and dropping tackle more compact; it can also be sleeved on the pulley shaft 3 at equidistant intervals along the axial direction of the pulley shaft 3, so that multiple wires can be kept at a certain distance to prevent multiple wires from appearing when they are deployed at the same time. Twisting, winding, etc.

In the process of wire deployment, in order to weaken the force of the pulley 4 on the bracket 2 along the axial direction of the pulley shaft 3, regardless of whether the 8 pulleys are sleeved on the pulley shaft 3 in sequence without intervals along the axial direction of the pulley shaft 3 On the pulley shaft 3, it is also sleeved on the pulley shaft 3 at equidistant intervals along the axial direction of the pulley shaft 3. An elastic buffer can be provided between two adjacent pulleys 4, and an elastic buffer can be provided on the elastic buffer. The clamping piece matched with the pulley shaft 3; the elastic buffer can be specifically selected from rubber gaskets or telescopic hoses, etc., and the clamping piece can be specifically selected from a limit retaining ring that can be clamped with the pulley shaft 3.

When the 8 pulleys are sleeved on the pulley shaft 3 without intervals along the axial direction of the pulley shaft 3, the outer surfaces of the two pulleys at the outermost ends can be fitted with rubber gaskets and stop rings. The gasket is located between the outer surface of the pulley and the limit stop ring, and the limit stop ring is clamped with the pulley shaft 3 to bear the force between the 8 pulleys along the axis of the pulley shaft 3 and prevent each pulley from A large amount of movement occurs along the axial direction of the pulley shaft 3; while other pulleys do not need to be provided with stop rings, and rubber gaskets are selected according to the situation.

Of course, if the main support structure of the bracket 2 fits with the outer surfaces of the two pulleys located at the outermost ends, the main support structure of the bracket 2 can bear the role of the eight pulleys along the axial direction of the pulley shaft 3 force, and there is no need to set a limit retaining ring, which is used to prevent the pulleys from significantly moving along the axial direction of the pulley shaft 3.

When the 8 pulleys are sleeved on the pulley shaft 3 at equidistant intervals along the axial direction of the pulley shaft 3, a telescopic hose and a stop ring can be correspondingly provided on both sides of each pulley, and the telescopic hose is located on the Between the sides of two adjacent pulleys, the stop ring can be set in the middle of the interval between two adjacent pulleys and snapped with the pulley shaft 3 to bear the distance between the 8 pulleys along the pulley shaft 3 The active force in the axial direction prevents each pulley from significantly moving along the axial direction of the pulley shaft 3 .

In the description of the above embodiments, specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in an appropriate manner.

The above is only a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Anyone skilled in the art can easily think of changes or substitutions within the technical scope disclosed in the present invention. Should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the protection scope of the claims.

Claims (10)

1. a wire drag and drop coaster, it is characterised in that including: fixing device；Described fixing device includes: be used for being arranged on across The more fixed mount on frame support body, and fix, with described fixed mount, the bracket being connected；Pulley spindle is carried on described bracket, described Being arranged with multiple rotating pulley on pulley spindle, the surface of described pulley is provided with the chute for holding wire.

Wire drag and drop coaster the most according to claim 1, it is characterised in that described fixed mount includes base plate, and is located at Two side plates of plate upper surface；Described bracket is fixedly connected on base plate lower surface；

Two described side plates are oppositely arranged, and each described side plate is provided with at least two and consolidates for fixing with crossing frame support body Determine installing hole.

Wire drag and drop coaster the most according to claim 2, it is characterised in that each described side plate is provided with fixing with described Installing hole is corresponding and dismountable adapter sleeve, and each described adapter sleeve is provided with fixing screwed hole；Or, described fixed installation hole is Fixing screwed hole.

Wire drag and drop coaster the most according to claim 2, it is characterised in that described base plate and two described side plates are integrated Formula structure；Or, two described side plates are respectively welded at the Liang Ge edge of described base plate.

Wire drag and drop coaster the most according to claim 2, it is characterised in that the one side that two described side plates are relative is equipped with Pad；Described pad is gluing with described side plate.

Wire drag and drop coaster the most according to claim 1, it is characterised in that described fixed mount and described bracket one bodily form Become；Or, described fixed mount and described bracket are fixing by the way of welding to be connected.

Wire drag and drop coaster the most according to claim 1, it is characterised in that described fixed mount passes through Flexible Connector and institute State the fixing connection of bracket；And/or, it is provided with resilient sleeve in described chute.

8. according to the arbitrary described wire drag and drop coaster of claim 1-7, it is characterised in that described fixed mount and described bracket are Steelframe.

Wire drag and drop coaster the most according to claim 8, it is characterised in that be provided with bullet between two adjacent described pulleys Property bolster, described resilient snubber is provided with the shackle member that can match with described pulley spindle.

Wire drag and drop coaster the most according to claim 9, it is characterised in that described pulley is set in by rolling bearing On described pulley spindle.