Bidirectional mechanical brake pay-off trolley

Abstract

The utility model discloses a kind of two-way mechanical braking pay-off pulley, including pulley main body, the bottom of pulley main body is movably sleeved with limit wheel, this two-way mechanical braking pay-off pulley is set with No. When installing pulley, steel cable is wound to No. Inside one positioning wheel and No. 2 positioning wheel, so that steel cable transmission can drive No. One positioning wheel rotates, i. E. Drive brake wheel to rotate, so that when braking is needed, stretch driving rope, so that driving rope can be stretched by lifting block to steel wire rope, promote steel wire rope to drive two calipers to overturn and extrude in the side of brake wheel, so that the fixing effect of brake wheel is achieved, i. E. The fixing effect of No. One positioning wheel is achieved, so that steel cable wound in No. One positioning wheel inside cannot continue transmission, and then the quick braking effect of pulley main body is achieved, so that the sensitivity when pay-off pulley braking is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of a bidirectional mechanical braking wire release pulley, specifically a bidirectional mechanical braking wire release pulley. Background Technology

[0002] A wire-laying pulley is a pulley used to lay out the corresponding wire during tension wire laying. Wire-laying pulleys can be classified according to the type of wire, such as conductor wire laying pulleys, ground wire laying pulleys, and fiber optic composite overhead ground wire laying pulleys. They can also be classified according to the number of pulleys, such as single-wheel pulleys, three-wheel pulleys, five-wheel pulleys, seven-wheel pulleys, and nine-wheel pulleys.

[0003] Chinese Patent CN216312533U discloses a bidirectional mechanical braking wire-laying trolley, comprising a wire-laying trolley body, a forward overspeed braking mechanism, and a reverse emergency braking mechanism, located on opposite sides of the wire-laying trolley body. This invention, while retaining the tension-laying function of traditional wire-laying trolleys, achieves the much-needed forward overspeed braking and reverse emergency braking functions. Its modular design allows for easy modification of existing wire-laying trolleys by adding the forward overspeed braking and reverse emergency braking components, or the invention can be used as a regular wire-laying trolley by removing these components, greatly expanding its applicability. The all-mechanical structure of this invention is compact, easy to install and maintain, and has a low cost, facilitating mass production and widespread use.

[0004] The aforementioned patent has some shortcomings: In the existing technology, when braking the wire-laying pulley, the sliding and braking components inside the wire-laying pulley are in single-sided contact with the steel wire cable, resulting in limited friction between the steel wire cable and the braking components, which in turn leads to a significant increase in the braking distance of the wire-laying pulley. Utility Model Content

[0005] The purpose of this invention is to provide a bidirectional mechanically braked wire-releasing pulley to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a bidirectional mechanical braking cable release trolley, comprising a trolley body, a limit wheel movably sleeved at the bottom of the trolley body, a positioning shaft movably sleeved inside the trolley body, a first positioning wheel fixedly sleeved outside the positioning shaft, a second positioning wheel movably sleeved inside the trolley body, a steel cable movably sleeved inside the first positioning wheel, a brake wheel fixedly sleeved at one end of the positioning shaft, an anti-slip groove formed on the outside of the brake wheel, a caliper movably sleeved on the front of the trolley body, a steel wire rope fixedly connected to the top of the side of the caliper, a braking mechanism provided on the front of the trolley body, the braking mechanism comprising a lifting block, the lifting block fixedly connected to one end of the steel wire rope, and a drive rope fixedly connected to the top of the lifting block;

[0007] A guide post is movably sleeved on the front of the trolley body, a limit mechanism is provided on the front of the trolley body, and a return spring is fixedly connected to the side of the caliper.

[0008] By adopting the above technical solution, a rapid braking effect is achieved on the main body of the pulley, thereby improving the sensitivity of the line-laying pulley during braking.

[0009] As a further embodiment of this utility model: the number of anti-slip grooves is multiple, and the multiple anti-slip grooves are evenly distributed around the brake wheel.

[0010] By adopting the above technical solution, the braking effect of the wire-laying pulley has been improved.

[0011] As a further embodiment of this utility model: the number of guide posts is two, and the two guide posts are symmetrically distributed with the brake wheel as the axis of symmetry.

[0012] By adopting the above technical solution, the stability of the caliper during stretching and flipping is improved.

[0013] As a further embodiment of this utility model: the limiting mechanism includes a connecting block, the connecting block is fixedly connected to the front of the trolley body, the top of the connecting block is fixedly connected to a limiting rod, and the limiting rod is movably sleeved inside the lifting block.

[0014] By adopting the above technical solution, the stability of the lifting block's position during lifting is improved.

[0015] As a further embodiment of this utility model: the reset spring is located directly above the brake wheel, and the reset spring and the lifting block are parallel to each other.

[0016] By adopting the above technical solution, when the braking of the defensive line pulley ends, the drive rope is released, allowing the return spring to drive the two calipers to reset and open, thereby enabling the brake wheel to rotate and move normally, thus achieving the normal working effect of the defensive line pulley.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows: This bidirectional mechanical braking wire-laying trolley, by setting a first positioning wheel, allows the steel cable to be wound inside the first and second positioning wheels respectively during trolley installation. This enables the steel cable to drive the first positioning wheel to rotate, which in turn drives the brake wheel to rotate. When braking is required, the drive rope is stretched, allowing the drive rope to stretch the wire rope through the lifting block. This causes the wire rope to drive the two calipers to flip and press against the side of the brake wheel, thus achieving the fixing effect of the brake wheel, which in turn achieves the fixing effect of the first positioning wheel. This prevents the steel cable wound inside the first positioning wheel from continuing to drive, thereby achieving a rapid braking effect of the trolley body and improving the sensitivity of the wire-laying trolley during braking.

[0018] In addition, the bidirectional mechanical brake wire release trolley is equipped with a limit mechanism. When the lifting block pulls the wire rope, the limit rod can limit the lifting block that moves up and down, thus avoiding the problem of the caliper failing to work due to the deviation of the lifting block during the lifting and lowering process. This improves the stability of the position of the lifting block during the lifting and lowering process, that is, improves the stability of the wire release trolley when it shakes during operation. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a front view of the No. 1 positioning wheel in the structure of this utility model;

[0021] Figure 3 This is a front view of the caliper in the structure of this utility model.

[0022] In the diagram: 1. Main body of the trolley; 2. Limiting wheel; 3. Positioning shaft; 4. Return spring; 5. Positioning wheel No. 1; 6. Positioning wheel No. 2; 7. Steel cable; 8. Brake wheel; 9. Anti-slip groove; 10. Caliper; 11. Steel wire rope; 12. Braking mechanism; 121. Lifting block; 122. Drive rope; 13. Guide column; 14. Limiting mechanism; 141. Connecting block; 142. Limiting rod. Detailed Implementation

[0023] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0024] The components of the present invention embodiments described and shown in the accompanying drawings can typically be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention.

[0025] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0026] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0027] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0028] Please see Figure 1-3 An embodiment of this utility model provides a bidirectional mechanical braking cable release trolley, comprising a trolley body 1, a limit wheel 2 movably sleeved at the bottom of the trolley body 1, a positioning shaft 3 movably sleeved inside the trolley body 1, a first positioning wheel 5 fixedly sleeved outside the positioning shaft 3, a second positioning wheel 6 movably sleeved inside the trolley body 1, a steel cable 7 movably sleeved inside the first positioning wheel 5, a brake wheel 8 fixedly sleeved at one end of the positioning shaft 3, an anti-slip groove 9 formed on the outside of the brake wheel 8, a caliper 10 movably sleeved on the front of the trolley body 1, a steel wire rope 11 fixedly connected to the top of the side of the caliper 10, a braking mechanism 12 provided on the front of the trolley body 1, the braking mechanism 12 including a lifting block 121, the lifting block 121 fixedly connected to one end of the steel wire rope 11, and a drive rope 122 fixedly connected to the top of the lifting block 121;

[0029] A guide post 13 is movably sleeved on the front of the trolley body 1, a limit mechanism 14 is provided on the front of the trolley body 1, and a return spring 4 is fixedly connected to the side of the caliper 10.

[0030] Specifically, by setting up a first positioning wheel 5, when the pulley is installed, the steel cable 7 is wound around the first positioning wheel 5 and the second positioning wheel 6 respectively, so that when the steel cable 7 is driven, it can drive the first positioning wheel 5 to rotate, that is, drive the brake wheel 8 to rotate. Thus, when braking is required, the drive rope 122 is stretched, so that the drive rope 122 can stretch the wire rope 11 through the lifting block 121, causing the wire rope 11 to drive the two calipers 10 to flip and squeeze against the side of the brake wheel 8, thereby achieving the fixing effect of the brake wheel 8, that is, the fixing effect of the first positioning wheel 5, so that the steel cable 7 wound inside the first positioning wheel 5 can no longer drive, thereby achieving the rapid braking effect of the pulley body 1, thus improving the sensitivity of the line-laying pulley when braking.

[0031] Furthermore, there are multiple anti-slip grooves 9, which are evenly distributed around the brake wheel 8;

[0032] Specifically, by setting the anti-slip groove 9, when the caliper 10 clamps and fixes the brake wheel 8, the anti-slip groove 9 greatly increases the friction between the caliper 10 and the brake wheel 8, that is, it improves the sensitivity of the brake wheel 8 when it stops braking, and thus improves the braking effect of the line-laying pulley.

[0033] Furthermore, there are two guide posts 13, which are symmetrically distributed about the brake wheel 8 as the axis of symmetry;

[0034] Specifically, by setting the guide column 13, when the lifting block 121 drives the wire rope 11 to stretch, the guide column 13 can guide and position the stretched wire rope 11, so that the wire rope 11 can stretch the caliper 10 in the horizontal direction, thereby avoiding the problem of the wire rope 11 tilting and causing the direction of the tension to change when it is stretched, thus improving the stability of the caliper 10 when it is stretched and flipped.

[0035] Furthermore, the limiting mechanism 14 includes a connecting block 141, which is fixedly connected to the front of the trolley body 1. A limiting rod 142 is fixedly connected to the top of the connecting block 141, and the limiting rod 142 is movably sleeved inside the lifting block 121.

[0036] Specifically, by setting a limiting mechanism 14, when the lifting block 121 drives the wire rope 11 to stretch, the limiting rod 142 can limit the lifting block 121 that moves up and down, thus avoiding the problem that the caliper 10 cannot work due to the deviation of the lifting block 121 during lifting and lowering, thereby improving the stability of the position of the lifting block 121 during lifting and lowering.

[0037] Furthermore, the return spring 4 is located directly above the brake wheel 8, and the return spring 4 and the lifting block 121 are parallel to each other;

[0038] Specifically, by setting a reset spring 4, when the braking of the defensive line pulley ends, the drive rope 122 is released, so that the reset spring 4 can drive the two calipers 10 to reset and open, thereby allowing the brake wheel 8 to rotate and move normally, thus achieving the normal working effect of the defensive line pulley.

[0039] Working Principle: During pulley installation, steel cable 7 is wound around the first positioning wheel 5 and the second positioning wheel 6 respectively. When steel cable 7 is in motion, it drives the first positioning wheel 5 to rotate, which in turn drives the brake wheel 8 to rotate. When braking is required, the drive rope 122 is stretched, allowing the lifting block 121 to stretch the wire rope 11. This causes the wire rope 11 to rotate and press against the sides of the brake wheel 8, thus fixing the brake wheel 8 and the first positioning wheel 5. This prevents the steel cable 7 wound inside the first positioning wheel 5 from continuing to move, achieving rapid braking of the pulley body 1. This improves the sensitivity of the wire-laying pulley during braking. When the calipers 10 clamp and fix the brake wheel 8, the anti-slip groove 9 greatly increases the friction between the calipers 10 and the brake wheel 8, thus improving the sensitivity of the brake wheel 8 when it stops braking, and improving the braking efficiency of the wire-laying pulley. The lifting block 121 pulls the wire rope 11 to extend, and the guide post 13 guides and positions the extended wire rope 11, allowing the wire rope 11 to stretch the caliper 10 in the horizontal direction. This avoids the problem of the wire rope 11 tilting during extension, which would cause a change in the direction of the tension, thus improving the stability of the caliper 10 during extension and reversal. When the lifting block 121 pulls the wire rope 11 to extend, the limit rod 142 limits the vertical movement of the lifting block 121, preventing the lifting block 121 from shifting during lifting and lowering, which would cause the caliper 10 to malfunction. This improves the stability of the lifting block 121 during lifting and lowering. When the braking of the defensive line pulley ends, the drive rope 122 is released, allowing the return spring 4 to drive the two calipers 10 to reset and open, allowing the brake wheel 8 to rotate and move normally, thus achieving the normal working effect of the defensive line pulley. The contents not described in detail in this description are existing technologies known to those skilled in the art.

[0040] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A bidirectional mechanically braked wire-releasing pulley, characterized in that: The device includes a trolley body, with a limit wheel movably sleeved at the bottom of the trolley body. A positioning shaft is movably sleeved inside the trolley body, and a first positioning wheel is fixedly sleeved on the outside of the positioning shaft. A second positioning wheel is movably sleeved inside the trolley body, and a steel cable is movably sleeved inside the first positioning wheel. A brake wheel is fixedly sleeved at one end of the positioning shaft, and an anti-slip groove is provided on the outside of the brake wheel. A caliper is movably sleeved on the front of the trolley body, and a steel wire rope is fixedly connected to the top of the side of the caliper. A braking mechanism is provided on the front of the trolley body, and the braking mechanism includes a lifting block, which is fixedly connected to one end of the steel wire rope, and a drive rope is fixedly connected to the top of the lifting block. A guide post is movably sleeved on the front of the trolley body, a limit mechanism is provided on the front of the trolley body, and a return spring is fixedly connected to the side of the caliper.

2. The bidirectional mechanically braked wire-releasing pulley according to claim 1, characterized in that: The number of anti-slip grooves is multiple, and the multiple anti-slip grooves are evenly distributed around the brake wheel.

3. The bidirectional mechanical braking wire-releasing pulley according to claim 1, characterized in that: The number of guide posts is two, and the two guide posts are symmetrically distributed about the brake wheel as an axis of symmetry.

4. The bidirectional mechanically braked wire-releasing pulley according to claim 1, characterized in that: The limiting mechanism includes a connecting block, which is fixedly connected to the front of the trolley body. A limiting rod is fixedly connected to the top of the connecting block, and the limiting rod is movably sleeved inside the lifting block.

5. The bidirectional mechanically braked wire-releasing pulley according to claim 1, characterized in that: The return spring is located directly above the brake wheel, and the return spring and the lifting block are parallel to each other.

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