WO2020177649A1

WO2020177649A1 - Rope joint structure and transmission mechanism therefor

Info

Publication number: WO2020177649A1
Application number: PCT/CN2020/077343
Authority: WO
Inventors: 包卫明
Original assignee: 上海施步新能源科技有限公司
Priority date: 2019-03-01
Filing date: 2020-02-29
Publication date: 2020-09-10
Also published as: CN210034292U

Abstract

A rope joint structure and a transmission mechanism having the rope joint structure. The rope joint structure comprises: a joint (2), a first end (1a) of a rope (1) being connected to a second end (1b) of the rope by means of the joint, so that the rope is connected into a loop; and a protective sleeve (3), the protective sleeve being sleeved on the joint, the protective sleeve being of a variable cross-section structure along the axial direction of the rope, the variable cross-section structure being flexible in the axial direction of the rope and being rigid in a direction perpendicular to the axial direction of the rope. When the rope joint structure and the transmission mechanism therefor pass by a roller, the turning radius of the rope at the front and rear ends of the joint changes little, thereby ensuring that the rope is not easy to broke here.

Description

Rope joint structure and its transmission mechanism

Technical field

The utility model relates to the technical field of rope connection structures, in particular to a rope joint structure and a transmission mechanism thereof.

Background technique

In the prior art, it is very common to use looped ropes for transmission between rollers. In the current solar photovoltaic field, the driving wheel on the power output shaft of the driving motor rotates through the looped rope driven wheel, thereby driving the solar tracking system to move. Because it is difficult to knit the rope directly into a loop, it is necessary to connect the head and tail of the rope through a joint to form the rope into a loop. However, because the joint has a certain volume, when the joint passes through the roller (such as the driving wheel or the driven wheel), the joint The turning radius of the rope at the front and rear ends of the cable changes greatly, which causes the rope to break at the front and rear ends of the joint after a period of use, and the life of the rope is shorter.

Summary of the invention

The purpose of the utility model is to provide a rope joint structure and its transmission mechanism to reduce the change in the turning radius of the front and rear ends of the rope joint when passing the roller, so that the rope is not easy to break at the front and rear ends of the joint, and the length of the rope is extended. Service life.

The technical scheme provided by the utility model is as follows:

A rope joint structure, comprising: a joint through which the first end of the rope and the second end of the rope are connected, and the rope is connected into a loop; a protective sleeve, the protective sleeve is sleeved on the outside of the joint, The protective sleeve has a variable cross-sectional structure along the axial direction of the rope, the cross-sectional area of the two ends of the variable cross-sectional structure along the axial direction of the rope is smaller than the cross-sectional area of the joint, and the variable cross-sectional structure is The rope has flexibility in the axial direction, and the variable cross-section structure has rigidity in the direction perpendicular to the rope axis.

In the above structure, by sheathing the outer side of the joint with a protective sleeve, the protective sleeve has rigidity in the direction perpendicular to the axis of the rope, and the protective sleeve has a variable cross-section structure. Therefore, when the structure passes the roller, the protective sleeve is in the joint The front and rear ends make the change of the turning radius of the rope at the front and rear ends of the joint smaller, and the rope is not easy to break at the front and rear ends of the joint, which prolongs the service life of the rope.

Preferably, the cross-sectional shape of the variable cross-sectional structure in a direction perpendicular to the axis of the rope is a circular ring or an elliptical ring.

Since the outer edge of the joint in the prior art forms a regular hexagon, and the rope will rotate when passing the roller during the transmission process, the surface of the joint is easy to be caught on the roller due to the edges and corners, which causes the rope to receive torque at the front and rear ends of the joint. The rope is easy to be twisted and broken here. In this structure, since the cross-sectional shape of the protective sleeve is circular or elliptical, when passing the roller, the outer surface of the protective sleeve is smooth, and the torque is transferred to the protective sleeve, which is finally converted into a combination of the protective sleeve and the roller surface. Friction, and this kind of friction is acceptable, reduces the possibility of twisting and breaking the rope at the front and rear ends of the joint, and further extends the service life of the rope.

Preferably, the radial dimension of the variable cross-section structure from the first end to the second end gradually expands and then tapers.

The smooth transition of the radial dimension of the variable cross-section structure can make the turning radius of the rope at the front and rear ends of the joint smaller when passing through the roller.

Preferably, along the axial direction of the rope, the variable section structure extends from its middle position toward both sides and the radial size of the variable section structure gradually decreases, so that the first end of the variable section structure is The radial dimensions of the second end of the structure are uniform.

Preferably, the variable cross-section structure is a cylindrical spiral spring, and the cylindrical spiral spring is arranged around the outside of the joint.

In the above structure, the cylindrical coil spring can be slowly wound around the joint from one end, so that the cylindrical coil spring is sleeved at the joint, and the installation of the cylindrical coil spring is more convenient.

Preferably, the variable cross-section structure includes a first part and a second part that are connected to each other; the first part and the second part of the variable cross-section structure are spirally wound with a plate-like structure, and the first part of the variable cross-section structure The end with the larger radial size is welded to the end with the larger radial size of the second part of the variable cross-section structure.

When the variable cross-section structure is welded by two parts spirally wound with a plate-like structure, the first part and the second part can be sleeved on the first end of the rope and the second end of the rope, and then used The joint connects the first end of the rope with the second end of the rope, and then welds the end of the first part of the variable section structure with the larger radial dimension to the end of the second part of the variable section structure with the larger radial dimension , So that the variable cross-section structure is sleeved outside the joint.

The utility model also provides a transmission mechanism using the above-mentioned rope joint structure, comprising: a guide wheel, a driving wheel and a driven wheel, the driving device drives the driving wheel to rotate, the driven wheel drives the main beam to rotate; the rope is guided by The wheels are tensioned, a driving wheel, a driven wheel and a number of said guide wheels are arranged on the path of the rope, and the rope is driven by the driving wheel to cyclically reciprocate, thereby driving the driven wheel to rotate.

The rope joint structure and its transmission mechanism provided by the utility model can bring the following beneficial effects:

Compared with the structure of the prior art, the rope joint structure of the present invention has a small change in the turning radius of the rope at the front and rear ends of the joint when it passes through the roller, ensuring that the rope is not easy to break here, and by changing the cross-section structure The cross-sectional shape is set in a circular ring or an elliptical ring, so as to prevent the joint from jamming when passing the roller, reduce the torque of the rope at the front and rear ends of the joint, and extend the service life of the rope by more than 10 times.

Description of the drawings

Hereinafter, the preferred embodiments will be described in a clear and easy-to-understand manner in conjunction with the accompanying drawings, and the above-mentioned characteristics, technical features, advantages and implementation methods of the rope joint structure and its transmission mechanism will be further described.

Figure 1 is a cross-sectional view of a specific embodiment of a rope joint structure;

Figure 2 is a schematic diagram of the structure of Figure 1;

Figure 3 is a schematic diagram of the structure of the rope at the joint;

Figure 4 is a cross-sectional view of Figure 3;

FIG. 5 is a schematic diagram of the structure of the protective cover in FIG. 1;

Figure 6 is a cross-sectional view of the protective cover of Figure 5;

Figure 7 is a schematic structural view of another specific embodiment of the rope joint structure;

Figure 8 is a cross-sectional view of Figure 7;

FIG. 9 is a schematic structural diagram of the protective cover in FIG. 7;

Figure 10 is a cross-sectional view of the protective sleeve of Figure 9;

Figure 11 is a schematic structural diagram of a transmission mechanism applied in a solar photovoltaic tracking system;

Figure 12 is a schematic diagram of the rope winding method.

Description with icon number:

1- rope, 1a- first end of rope, 1b- second end of rope, 1c- first easy fold, 1d- second easy fold, 2- joint, 2a- joint plane, 3- protective sleeve, 3a-the first end of the protective sleeve, 3b-the second end of the protective sleeve, 4-connecting seam, 5-guide wheel, 6-drive wheel, 7-driven wheel, 8-drive motor, 9-worm gear reducer, 10- main beam, 11- photovoltaic module.

detailed description

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the specific implementation of the present utility model will be described below with reference to the drawings. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative work, other drawings can be obtained based on these drawings, and Get other implementations.

In order to make the drawings concise, the figures in each figure only schematically show the parts related to the present invention, and they do not represent the actual structure of the product.

[Example 1]

As shown in Figures 1 to 6, Example 1 discloses a specific implementation of a rope joint structure, which is used to form the two ends of the rope 1 into a loop, specifically including: the joint 2 and the protective cover 3, the rope The first end 1a and the second end 1b of the rope are connected by the joint 2 to connect the rope 1 into a ring shape. The ring-shaped rope 1 serves as a transmission mechanism and can be transmitted and rotated. In this embodiment, the joint 2 is a straight hexagonal prism body. , The joint 2 has 6 joint planes 2a along its own extension direction, and the rope 1 is a steel wire rope.

In other specific embodiments, the rope 1 may also be a nylon rope, a hybrid rope, etc., which will not be repeated here.

As shown in Figure 1, the protective sleeve 3 is sleeved on the outside of the joint 2. The protective sleeve 3 has a variable cross-sectional structure along the axis of the rope 1. The variable cross-sectional structure is flexible in the axial direction of the rope 1, and the variable cross-sectional structure is vertical It has rigidity in the axial direction of the rope 1.

Since the protective sleeve 3 has a variable cross-section along the axial direction of the rope 1 and has rigidity in the axial direction perpendicular to the rope 1, the protective sleeve 3 can properly support the joint 2 when the joint 2 passes the roller. Makes the front and rear ends of the joint 2, ie, the first easy bend 1c and the second easy bend 1d in Figures 3 to 4, the turning radius changes small, the first easy bend 1c and the second easy bend 1d It is not easy to be broken due to frequent breaks, which greatly extends the service life of the rope 1.

Specifically, the cross-sectional shape of the variable cross-section structure in the direction perpendicular to the axis of the rope 1 is circular, that is, the outer surface of the variable cross-section structure is smooth along the circumferential direction, because the rope 1 rotates when it rotates between the rollers. , The smooth outer surface of the variable cross-section structure can prevent the structure from being stuck on the roller, thereby reducing the rope 1 at the front and rear ends of the joint 2, namely the first easy fold 1c and the second easy fold 1d in Figure 3 and Figure 4 Torsion occurs and breaks, and the protective cover 3 can rotate about the axis of the rope 1 as an axis, so as to further prevent the rope 1 from breaking due to torsion.

In other specific embodiments, the cross-sectional shape of the variable cross-sectional structure can also be an elliptical ring, that is, an elliptical ring, or a polygonal ring, but the variable cross-sectional structure of this shape cannot reduce the stress of the rope at the front and rear ends of the joint The possibility of twisting and breaking is not repeated here.

As shown in Figure 1, the radial dimension of the variable cross-section structure from the first end 3a of the protective sleeve to the second end 3b of the protective sleeve gradually expands and then tapers. Along the axis of the rope 1, the variable cross-sectional structure starts from the middle. The position extends toward both sides and the radial size of the variable cross-section structure gradually decreases, so that the first end of the variable cross-section structure (ie, the first end 3a of the protective sleeve) and the second end of the variable cross-section structure (ie, the first end of the protective sleeve) The radial dimension of the end 3b) is the same, that is, the radial dimension of the middle position of the variable section structure is the largest.

Of course, the variable cross-section structure can also have different radial dimensions between the first end and the second end, or the radial size of the variable cross-section structure can be abrupt, as long as the joint 2 does not slip out of the two ends of the variable cross-section structure. I won't repeat them here.

The variable cross-section structure is specifically a cylindrical spiral spring, and the cylindrical spiral spring is wound around the outside of the joint 2.

[Example 2]

As shown in Figures 7 to 10, Embodiment 2 discloses another specific implementation of a rope joint structure, which specifically includes: a joint 2 and a protective cover 3 through which the first end 1a of the rope and the second end 1b of the rope pass The joint 2 is connected to connect the rope 1 into a ring shape, and the ring rope 1 is used as a transmission mechanism to transmit and rotate.

As shown in Figures 7 and 8, the protective sleeve 3 is sleeved on the outside of the joint 2. The protective sleeve 3 has a variable section structure along the axis of the rope 1. The variable section structure has flexibility in the axial direction of the rope 1. The structure has rigidity in the direction perpendicular to the axis of the rope 1.

Since the protective sleeve 3 has a variable cross-section along the axial direction of the rope 1 and has rigidity in the axial direction perpendicular to the rope 1, the protective sleeve 3 can properly support the joint 2 when the joint 2 passes the roller. Makes the front and back ends of the joint 2, that is, the first easy bend 1c and the second easy bend 1d in FIG. 8 have smaller turning radius changes, and the first easy bend 1c and the second easy bend 1d are not easy to It is broken by being broken, which greatly prolongs the service life of the rope 1.

Specifically, the cross-sectional shape of the variable cross-section structure in the direction perpendicular to the axis of the rope 1 is circular, that is, the outer surface of the variable cross-section structure is smooth along the circumferential direction, because the rope 1 rotates when it rotates between the rollers. , The smooth outer surface of the variable cross-section structure can prevent the structure from being stuck on the roller, thereby preventing the rope 1 from twisting at the front and rear ends of the joint 2, that is, the first easy fold 1c and the second easy fold 1d in Figure 8 When the rope 1 is broken, the winding method of the rope 1 is shown in FIG. 12. Of course, in order to further reduce the torsion and break of the rope 1, the protective sleeve 3 is rotatably sleeved on the outside of the joint 2.

In other specific embodiments, the cross-sectional shape of the variable cross-sectional structure may also be an elliptical ring, which will not be repeated here.

As shown in Figures 7 and 8, the radial dimension of the variable cross-section structure from the first end 3a of the protective sleeve to the second end 3b of the protective sleeve gradually expands and then tapers. Along the axial direction of the rope 1, the variable cross-sectional structure Extending from its middle position toward both sides and the radial size of the variable cross-section structure gradually decreases, so that the first end of the variable cross-section structure (ie the first end 3a of the protective sleeve) and the second end of the variable cross-section structure (ie the protective sleeve) The radial dimension of the second end 3b) is the same, that is, the radial dimension of the middle position of the variable section structure is the largest.

Of course, the variable cross-section structure can also have different radial dimensions between the first end and the second end, as long as it is ensured that the joint 2 will not slip out of the two ends of the variable cross-section structure, and it will not be repeated here.

Specifically, as shown in Figures 9 and 10, the variable cross-section structure includes a first part and a second part that are connected to each other. The first part and the second part of the variable cross-section structure are both spirally wound with a plate-like structure. The end with the larger radial dimension of the first part is welded to the end with the larger radial dimension of the second part of the variable cross-section structure. The connecting seam 4 in Figure 9 and Figure 10 is the connection between the first part and the second part. In this embodiment, the first part of the variable cross-section structure is welded to the second part of the variable cross-sectional structure, and the connecting seam 4 is a welding seam.

In other specific embodiments, the variable cross-section structure can also be divided into two or more sections, such as 3 sections, 4 sections, etc., and the sections are welded together to obtain the variable section structure, which will not be repeated here.

[Example 3]

As shown in Figure 11, Example 3 discloses a specific implementation of a transmission mechanism, which applies the rope joint structure of Example 1 or Example 2, including: guide wheels 5, driving wheels 6 and driven wheels 7, driving The device 8 drives the driving wheel 6 to rotate, and the driven wheel 7 drives the main beam 10 to rotate; the rope 1 is tensioned by the guide wheel 5, and the driving wheel 6, the driven wheel 7 and several guide wheels 5 are arranged on the path of the rope 1. The rope 1 is on the driving wheel Driven by 6, it runs cyclically, thereby driving the driven wheel 7 to rotate.

Specifically, as shown in Fig. 11, when applied to a solar photovoltaic tracking system, the power output shaft of the drive motor 8 drives the driving wheel 6 to rotate, and the driving wheel 6 drives the looped rope 1 to move, and the guide wheel 5 pairs The rope 1 is guided and tensioned. The rope 1 drives the driven wheel 7 to rotate. The driven wheel 7 drives the worm gear reducer 9 to rotate. The worm gear reducer decelerates and drives the main beam 10 to rotate. Finally, the main beam 10 drives the photovoltaic installed above it. The assembly 11 rotates.

In the whole process, the rope joint structure and its transmission mechanism of the present invention can protect the rope 1 when passing through the driving wheel 6 and the driven wheel 7. The turning radius of the rope 1 at the front and rear ends of the joint 2 is small to ensure the rope 1 It is not easy to break here, and the cross-sectional shape of the variable cross-section structure is set to a circular ring shape, so as to avoid the joint 2 from getting stuck when passing the driving wheel 6 or the driven wheel 7, and reduce the rope 1 in the front and back of the joint 2. Torque is applied to the end.

Embodiment 1 is applied to the foregoing scenario and can be used continuously for more than 20 days, and Embodiment 2 is applied to the foregoing scenario and can be used continuously for one hour. In the prior art, only the structure of connecting the rope 1 with the joint 2 can be used continuously for 40 days. Hours, extending the service life by more than 10 times.

It should be noted that the above embodiments can be freely combined as required. The above are only the preferred embodiments of the present utility model. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present utility model, several improvements and modifications can be made. These improvements and Retouching should also be regarded as the protection scope of this utility model.

Claims

A rope joint structure is characterized in that it comprises:

A joint, the first end of the rope and the second end of the rope are connected through the joint, and the rope is connected into a loop;

A protective sleeve, the protective sleeve is sleeved on the outside of the joint, the protective sleeve has a variable cross-sectional structure along the axis of the rope, and the cross-sectional area of the two ends of the variable cross-sectional structure along the axis of the rope It is smaller than the cross-sectional area of the joint, and the variable cross-sectional structure has flexibility in the axial direction of the rope, and the variable cross-sectional structure has rigidity in the axial direction perpendicular to the rope.
The rope joint structure according to claim 1, wherein:

The cross-sectional shape of the variable cross-sectional structure in a direction perpendicular to the axis of the rope is a circular ring or an elliptical ring.
The rope joint structure according to claim 2, wherein:

The radial dimension of the variable cross-section structure from the first end to the second end gradually expands and then tapers.
The rope joint structure according to claim 3, wherein:

Along the axis of the rope, the variable cross-section structure extends from its middle position toward both sides and the radial size of the variable cross-section structure gradually decreases, so that the first end of the variable cross-section structure and the second end of the variable cross-section structure The radial dimensions of the two ends are the same.
The rope joint structure according to any one of claims 3 to 4, characterized in that:

The variable section structure is a cylindrical spiral spring, and the cylindrical spiral spring is arranged around the outside of the joint.
The rope joint structure according to claim 4, characterized in that:

The variable cross-sectional structure includes a first part and a second part connected to each other;

The first part and the second part of the variable cross-section structure are spirally wound with a plate-like structure, and the radial dimension of the first part of the variable cross-section structure is larger than that of the second part of the variable cross-section structure. The big end is welded.
A transmission mechanism using the rope joint structure of any one of claims 1 to 6, characterized in that it comprises:

Guide wheels, driving wheels and driven wheels, the driving device drives the driving wheels to rotate, and the driven wheels drive the main beam to rotate;

The rope is tensioned by a guide wheel, and a driving wheel, a driven wheel and a plurality of the guide wheels are arranged on the path of the rope, and the rope is driven by the driving wheel to cyclically run to drive the driven wheel to rotate.